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/*
***********************************************************************************************
** O.S : FreeBSD
** FILE NAME : arcmsr.h
** BY : Erich Chen, Ching Huang
** Description: SCSI RAID Device Driver for
** ARECA SATA/SAS RAID HOST Adapter
** [RAID controller:INTEL 331(PCI-X) 341(PCI-EXPRESS) chip set]
***********************************************************************************************
************************************************************************
** Copyright (C) 2002 - 2010, Areca Technology Corporation All rights reserved.
**
** Web site: www.areca.com.tw
** E-mail: erich@areca.com.tw; ching2048@areca.com.tw
**
** Redistribution and use in source and binary forms,with or without
** modification,are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice,this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice,this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES,INCLUDING,BUT NOT LIMITED TO,THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,INDIRECT,
** INCIDENTAL,SPECIAL,EXEMPLARY,OR CONSEQUENTIAL DAMAGES(INCLUDING,BUT
** NOT LIMITED TO,PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA,OR PROFITS; OR BUSINESS INTERRUPTION)HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY,WHETHER IN CONTRACT,STRICT LIABILITY,OR TORT
**(INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE,EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**************************************************************************
* $FreeBSD: release/9.1.0/sys/dev/arcmsr/arcmsr.h 240758 2012-09-20 17:30:26Z delphij $
*/
#define ARCMSR_SCSI_INITIATOR_ID 255
#define ARCMSR_DEV_SECTOR_SIZE 512
#define ARCMSR_MAX_XFER_SECTORS 4096
#define ARCMSR_MAX_TARGETID 17 /*16 max target id + 1*/
#define ARCMSR_MAX_TARGETLUN 8 /*8*/
#define ARCMSR_MAX_CHIPTYPE_NUM 4
#define ARCMSR_MAX_OUTSTANDING_CMD 256
#define ARCMSR_MAX_START_JOB 257
#define ARCMSR_MAX_CMD_PERLUN ARCMSR_MAX_OUTSTANDING_CMD
#define ARCMSR_MAX_FREESRB_NUM 384
#define ARCMSR_MAX_QBUFFER 4096 /* ioctl QBUFFER */
#define ARCMSR_MAX_SG_ENTRIES 38 /* max 38*/
#define ARCMSR_MAX_ADAPTER 4
#define ARCMSR_RELEASE_SIMQ_LEVEL 230
#define ARCMSR_MAX_HBB_POSTQUEUE 264 /* (ARCMSR_MAX_OUTSTANDING_CMD+8) */
#define ARCMSR_TIMEOUT_DELAY 60 /* in sec */
/*
*********************************************************************
*/
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifndef INTR_ENTROPY
# define INTR_ENTROPY 0
#endif
#ifndef offsetof
#define offsetof(type, member) ((size_t)(&((type *)0)->member))
#endif
/*
**********************************************************************************
**
**********************************************************************************
*/
#define PCI_VENDOR_ID_ARECA 0x17D3 /* Vendor ID */
#define PCI_DEVICE_ID_ARECA_1110 0x1110 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1120 0x1120 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1130 0x1130 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1160 0x1160 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1170 0x1170 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1200 0x1200 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1201 0x1201 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1210 0x1210 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1212 0x1212 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1220 0x1220 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1222 0x1222 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1230 0x1230 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1231 0x1231 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1260 0x1260 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1261 0x1261 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1270 0x1270 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1280 0x1280 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1380 0x1380 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1381 0x1381 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1680 0x1680 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1681 0x1681 /* Device ID */
#define PCI_DEVICE_ID_ARECA_1880 0x1880 /* Device ID */
#define ARECA_SUB_DEV_ID_1880 0x1880 /* Subsystem Device ID */
#define ARECA_SUB_DEV_ID_1882 0x1882 /* Subsystem Device ID */
#define ARECA_SUB_DEV_ID_1212 0x1212 /* Subsystem Device ID */
#define ARECA_SUB_DEV_ID_1213 0x1213 /* Subsystem Device ID */
#define ARECA_SUB_DEV_ID_1222 0x1222 /* Subsystem Device ID */
#define ARECA_SUB_DEV_ID_1223 0x1223 /* Subsystem Device ID */
#define PCIDevVenIDARC1110 0x111017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1120 0x112017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1130 0x113017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1160 0x116017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1170 0x117017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1200 0x120017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1201 0x120117D3 /* Vendor Device ID */
#define PCIDevVenIDARC1210 0x121017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1212 0x121217D3 /* Vendor Device ID */
#define PCIDevVenIDARC1213 0x121317D3 /* Vendor Device ID */
#define PCIDevVenIDARC1220 0x122017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1222 0x122217D3 /* Vendor Device ID */
#define PCIDevVenIDARC1223 0x122317D3 /* Vendor Device ID */
#define PCIDevVenIDARC1230 0x123017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1231 0x123117D3 /* Vendor Device ID */
#define PCIDevVenIDARC1260 0x126017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1261 0x126117D3 /* Vendor Device ID */
#define PCIDevVenIDARC1270 0x127017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1280 0x128017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1380 0x138017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1381 0x138117D3 /* Vendor Device ID */
#define PCIDevVenIDARC1680 0x168017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1681 0x168117D3 /* Vendor Device ID */
#define PCIDevVenIDARC1880 0x188017D3 /* Vendor Device ID */
#define PCIDevVenIDARC1882 0x188217D3 /* Vendor Device ID */
#ifndef PCIR_BARS
#define PCIR_BARS 0x10
#define PCIR_BAR(x) (PCIR_BARS + (x) * 4)
#endif
#define PCI_BASE_ADDR0 0x10
#define PCI_BASE_ADDR1 0x14
#define PCI_BASE_ADDR2 0x18
#define PCI_BASE_ADDR3 0x1C
#define PCI_BASE_ADDR4 0x20
#define PCI_BASE_ADDR5 0x24
/*
**********************************************************************************
**
**********************************************************************************
*/
#define ARCMSR_SCSICMD_IOCTL 0x77
#define ARCMSR_CDEVSW_IOCTL 0x88
#define ARCMSR_MESSAGE_FAIL 0x0001
#define ARCMSR_MESSAGE_SUCCESS 0x0000
/*
**********************************************************************************
**
**********************************************************************************
*/
#define arcmsr_ccbsrb_ptr spriv_ptr0
#define arcmsr_ccbacb_ptr spriv_ptr1
#define dma_addr_hi32(addr) (u_int32_t) ((addr>>16)>>16)
#define dma_addr_lo32(addr) (u_int32_t) (addr & 0xffffffff)
#define get_min(x,y) ((x) < (y) ? (x) : (y))
#define get_max(x,y) ((x) < (y) ? (y) : (x))
/*
**********************************************************************************
**
**********************************************************************************
*/
struct CMD_MESSAGE {
u_int32_t HeaderLength;
u_int8_t Signature[8];
u_int32_t Timeout;
u_int32_t ControlCode;
u_int32_t ReturnCode;
u_int32_t Length;
};
struct CMD_MESSAGE_FIELD {
struct CMD_MESSAGE cmdmessage; /* ioctl header */
u_int8_t messagedatabuffer[1032]; /* areca gui program does not accept more than 1031 byte */
};
/************************************************************************/
/************************************************************************/
#define ARCMSR_IOP_ERROR_ILLEGALPCI 0x0001
#define ARCMSR_IOP_ERROR_VENDORID 0x0002
#define ARCMSR_IOP_ERROR_DEVICEID 0x0002
#define ARCMSR_IOP_ERROR_ILLEGALCDB 0x0003
#define ARCMSR_IOP_ERROR_UNKNOW_CDBERR 0x0004
#define ARCMSR_SYS_ERROR_MEMORY_ALLOCATE 0x0005
#define ARCMSR_SYS_ERROR_MEMORY_CROSS4G 0x0006
#define ARCMSR_SYS_ERROR_MEMORY_LACK 0x0007
#define ARCMSR_SYS_ERROR_MEMORY_RANGE 0x0008
#define ARCMSR_SYS_ERROR_DEVICE_BASE 0x0009
#define ARCMSR_SYS_ERROR_PORT_VALIDATE 0x000A
/*DeviceType*/
#define ARECA_SATA_RAID 0x90000000
/*FunctionCode*/
#define FUNCTION_READ_RQBUFFER 0x0801
#define FUNCTION_WRITE_WQBUFFER 0x0802
#define FUNCTION_CLEAR_RQBUFFER 0x0803
#define FUNCTION_CLEAR_WQBUFFER 0x0804
#define FUNCTION_CLEAR_ALLQBUFFER 0x0805
#define FUNCTION_REQUEST_RETURNCODE_3F 0x0806
#define FUNCTION_SAY_HELLO 0x0807
#define FUNCTION_SAY_GOODBYE 0x0808
#define FUNCTION_FLUSH_ADAPTER_CACHE 0x0809
/*
************************************************************************
** IOCTL CONTROL CODE
************************************************************************
*/
/* ARECA IO CONTROL CODE*/
#define ARCMSR_MESSAGE_READ_RQBUFFER _IOWR('F', FUNCTION_READ_RQBUFFER, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_WRITE_WQBUFFER _IOWR('F', FUNCTION_WRITE_WQBUFFER, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_CLEAR_RQBUFFER _IOWR('F', FUNCTION_CLEAR_RQBUFFER, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_CLEAR_WQBUFFER _IOWR('F', FUNCTION_CLEAR_WQBUFFER, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_CLEAR_ALLQBUFFER _IOWR('F', FUNCTION_CLEAR_ALLQBUFFER, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_REQUEST_RETURNCODE_3F _IOWR('F', FUNCTION_REQUEST_RETURNCODE_3F, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_SAY_HELLO _IOWR('F', FUNCTION_SAY_HELLO, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_SAY_GOODBYE _IOWR('F', FUNCTION_SAY_GOODBYE, struct CMD_MESSAGE_FIELD)
#define ARCMSR_MESSAGE_FLUSH_ADAPTER_CACHE _IOWR('F', FUNCTION_FLUSH_ADAPTER_CACHE, struct CMD_MESSAGE_FIELD)
/* ARECA IOCTL ReturnCode */
#define ARCMSR_MESSAGE_RETURNCODE_OK 0x00000001
#define ARCMSR_MESSAGE_RETURNCODE_ERROR 0x00000006
#define ARCMSR_MESSAGE_RETURNCODE_3F 0x0000003F
#define ARCMSR_IOCTL_RETURNCODE_BUS_HANG_ON 0x00000088
/*
************************************************************************
** SPEC. for Areca HBB adapter
************************************************************************
*/
/* ARECA HBB COMMAND for its FIRMWARE */
#define ARCMSR_DRV2IOP_DOORBELL 0x00020400 /* window of "instruction flags" from driver to iop */
#define ARCMSR_DRV2IOP_DOORBELL_MASK 0x00020404
#define ARCMSR_IOP2DRV_DOORBELL 0x00020408 /* window of "instruction flags" from iop to driver */
#define ARCMSR_IOP2DRV_DOORBELL_MASK 0x0002040C
/* ARECA FLAG LANGUAGE */
#define ARCMSR_IOP2DRV_DATA_WRITE_OK 0x00000001 /* ioctl transfer */
#define ARCMSR_IOP2DRV_DATA_READ_OK 0x00000002 /* ioctl transfer */
#define ARCMSR_IOP2DRV_CDB_DONE 0x00000004
#define ARCMSR_IOP2DRV_MESSAGE_CMD_DONE 0x00000008
#define ARCMSR_DOORBELL_HANDLE_INT 0x0000000F
#define ARCMSR_DOORBELL_INT_CLEAR_PATTERN 0xFF00FFF0
#define ARCMSR_MESSAGE_INT_CLEAR_PATTERN 0xFF00FFF7
#define ARCMSR_MESSAGE_GET_CONFIG 0x00010008 /* (ARCMSR_INBOUND_MESG0_GET_CONFIG<<16)|ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED) */
#define ARCMSR_MESSAGE_SET_CONFIG 0x00020008 /* (ARCMSR_INBOUND_MESG0_SET_CONFIG<<16)|ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED) */
#define ARCMSR_MESSAGE_ABORT_CMD 0x00030008 /* (ARCMSR_INBOUND_MESG0_ABORT_CMD<<16)|ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED) */
#define ARCMSR_MESSAGE_STOP_BGRB 0x00040008 /* (ARCMSR_INBOUND_MESG0_STOP_BGRB<<16)|ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED) */
#define ARCMSR_MESSAGE_FLUSH_CACHE 0x00050008 /* (ARCMSR_INBOUND_MESG0_FLUSH_CACHE<<16)|ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED) */
#define ARCMSR_MESSAGE_START_BGRB 0x00060008 /* (ARCMSR_INBOUND_MESG0_START_BGRB<<16)|ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED) */
#define ARCMSR_MESSAGE_START_DRIVER_MODE 0x000E0008
#define ARCMSR_MESSAGE_SET_POST_WINDOW 0x000F0008
#define ARCMSR_MESSAGE_ACTIVE_EOI_MODE 0x00100008
#define ARCMSR_MESSAGE_FIRMWARE_OK 0x80000000 /* ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK */
#define ARCMSR_DRV2IOP_DATA_WRITE_OK 0x00000001 /* ioctl transfer */
#define ARCMSR_DRV2IOP_DATA_READ_OK 0x00000002 /* ioctl transfer */
#define ARCMSR_DRV2IOP_CDB_POSTED 0x00000004
#define ARCMSR_DRV2IOP_MESSAGE_CMD_POSTED 0x00000008
#define ARCMSR_DRV2IOP_END_OF_INTERRUPT 0x00000010 /* */
/* data tunnel buffer between user space program and its firmware */
#define ARCMSR_MSGCODE_RWBUFFER 0x0000fa00 /* iop msgcode_rwbuffer for message command */
#define ARCMSR_IOCTL_WBUFFER 0x0000fe00 /* user space data to iop 128bytes */
#define ARCMSR_IOCTL_RBUFFER 0x0000ff00 /* iop data to user space 128bytes */
#define ARCMSR_HBB_BASE0_OFFSET 0x00000010
#define ARCMSR_HBB_BASE1_OFFSET 0x00000018
#define ARCMSR_HBB_BASE0_LEN 0x00021000
#define ARCMSR_HBB_BASE1_LEN 0x00010000
/*
************************************************************************
** SPEC. for Areca HBC adapter
************************************************************************
*/
#define ARCMSR_HBC_ISR_THROTTLING_LEVEL 12
#define ARCMSR_HBC_ISR_MAX_DONE_QUEUE 20
/* Host Interrupt Mask */
#define ARCMSR_HBCMU_UTILITY_A_ISR_MASK 0x00000001 /* When clear, the Utility_A interrupt routes to the host.*/
#define ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR_MASK 0x00000004 /* When clear, the General Outbound Doorbell interrupt routes to the host.*/
#define ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR_MASK 0x00000008 /* When clear, the Outbound Post List FIFO Not Empty interrupt routes to the host.*/
#define ARCMSR_HBCMU_ALL_INTMASKENABLE 0x0000000D /* disable all ISR */
/* Host Interrupt Status */
#define ARCMSR_HBCMU_UTILITY_A_ISR 0x00000001
/*
** Set when the Utility_A Interrupt bit is set in the Outbound Doorbell Register.
** It clears by writing a 1 to the Utility_A bit in the Outbound Doorbell Clear Register or through automatic clearing (if enabled).
*/
#define ARCMSR_HBCMU_OUTBOUND_DOORBELL_ISR 0x00000004
/*
** Set if Outbound Doorbell register bits 30:1 have a non-zero
** value. This bit clears only when Outbound Doorbell bits
** 30:1 are ALL clear. Only a write to the Outbound Doorbell
** Clear register clears bits in the Outbound Doorbell register.
*/
#define ARCMSR_HBCMU_OUTBOUND_POSTQUEUE_ISR 0x00000008
/*
** Set whenever the Outbound Post List Producer/Consumer
** Register (FIFO) is not empty. It clears when the Outbound
** Post List FIFO is empty.
*/
#define ARCMSR_HBCMU_SAS_ALL_INT 0x00000010
/*
** This bit indicates a SAS interrupt from a source external to
** the PCIe core. This bit is not maskable.
*/
/* DoorBell*/
#define ARCMSR_HBCMU_DRV2IOP_DATA_WRITE_OK 0x00000002/**/
#define ARCMSR_HBCMU_DRV2IOP_DATA_READ_OK 0x00000004/**/
#define ARCMSR_HBCMU_DRV2IOP_MESSAGE_CMD_DONE 0x00000008/*inbound message 0 ready*/
#define ARCMSR_HBCMU_DRV2IOP_POSTQUEUE_THROTTLING 0x00000010/*more than 12 request completed in a time*/
#define ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_OK 0x00000002/**/
#define ARCMSR_HBCMU_IOP2DRV_DATA_WRITE_DOORBELL_CLEAR 0x00000002/*outbound DATA WRITE isr door bell clear*/
#define ARCMSR_HBCMU_IOP2DRV_DATA_READ_OK 0x00000004/**/
#define ARCMSR_HBCMU_IOP2DRV_DATA_READ_DOORBELL_CLEAR 0x00000004/*outbound DATA READ isr door bell clear*/
#define ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE 0x00000008/*outbound message 0 ready*/
#define ARCMSR_HBCMU_IOP2DRV_MESSAGE_CMD_DONE_DOORBELL_CLEAR 0x00000008/*outbound message cmd isr door bell clear*/
#define ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK 0x80000000/*ARCMSR_HBCMU_MESSAGE_FIRMWARE_OK*/
/*
*************************************************************
** structure for holding DMA address data
*************************************************************
*/
#define IS_SG64_ADDR 0x01000000 /* bit24 */
/*
************************************************************************************************
** ARECA FIRMWARE SPEC
************************************************************************************************
** Usage of IOP331 adapter
** (All In/Out is in IOP331's view)
** 1. Message 0 --> InitThread message and retrun code
** 2. Doorbell is used for RS-232 emulation
** inDoorBell : bit0 -- data in ready (DRIVER DATA WRITE OK)
** bit1 -- data out has been read (DRIVER DATA READ OK)
** outDooeBell: bit0 -- data out ready (IOP331 DATA WRITE OK)
** bit1 -- data in has been read (IOP331 DATA READ OK)
** 3. Index Memory Usage
** offset 0xf00 : for RS232 out (request buffer)
** offset 0xe00 : for RS232 in (scratch buffer)
** offset 0xa00 : for inbound message code msgcode_rwbuffer (driver send to IOP331)
** offset 0xa00 : for outbound message code msgcode_rwbuffer (IOP331 send to driver)
** 4. RS-232 emulation
** Currently 128 byte buffer is used
** 1st u_int32_t : Data length (1--124)
** Byte 4--127 : Max 124 bytes of data
** 5. PostQ
** All SCSI Command must be sent through postQ:
** (inbound queue port) Request frame must be 32 bytes aligned
** # bit27--bit31 => flag for post ccb
** # bit0--bit26 => real address (bit27--bit31) of post arcmsr_cdb
** bit31 : 0 : 256 bytes frame
** 1 : 512 bytes frame
** bit30 : 0 : normal request
** 1 : BIOS request
** bit29 : reserved
** bit28 : reserved
** bit27 : reserved
** -------------------------------------------------------------------------------
** (outbount queue port) Request reply
** # bit27--bit31 => flag for reply
** # bit0--bit26 => real address (bit27--bit31) of reply arcmsr_cdb
** bit31 : must be 0 (for this type of reply)
** bit30 : reserved for BIOS handshake
** bit29 : reserved
** bit28 : 0 : no error, ignore AdapStatus/DevStatus/SenseData
** 1 : Error, error code in AdapStatus/DevStatus/SenseData
** bit27 : reserved
** 6. BIOS request
** All BIOS request is the same with request from PostQ
** Except :
** Request frame is sent from configuration space
** offset: 0x78 : Request Frame (bit30 == 1)
** offset: 0x18 : writeonly to generate IRQ to IOP331
** Completion of request:
** (bit30 == 0, bit28==err flag)
** 7. Definition of SGL entry (structure)
** 8. Message1 Out - Diag Status Code (????)
** 9. Message0 message code :
** 0x00 : NOP
** 0x01 : Get Config ->offset 0xa00 :for outbound message code msgcode_rwbuffer (IOP331 send to driver)
** Signature 0x87974060(4)
** Request len 0x00000200(4)
** numbers of queue 0x00000100(4)
** SDRAM Size 0x00000100(4)-->256 MB
** IDE Channels 0x00000008(4)
** vendor 40 bytes char
** model 8 bytes char
** FirmVer 16 bytes char
** Device Map 16 bytes char
**
** FirmwareVersion DWORD <== Added for checking of new firmware capability
** 0x02 : Set Config ->offset 0xa00 : for inbound message code msgcode_rwbuffer (driver send to IOP331)
** Signature 0x87974063(4)
** UPPER32 of Request Frame (4)-->Driver Only
** 0x03 : Reset (Abort all queued Command)
** 0x04 : Stop Background Activity
** 0x05 : Flush Cache
** 0x06 : Start Background Activity (re-start if background is halted)
** 0x07 : Check If Host Command Pending (Novell May Need This Function)
** 0x08 : Set controller time ->offset 0xa00 : for inbound message code msgcode_rwbuffer (driver to IOP331)
** byte 0 : 0xaa <-- signature
** byte 1 : 0x55 <-- signature
** byte 2 : year (04)
** byte 3 : month (1..12)
** byte 4 : date (1..31)
** byte 5 : hour (0..23)
** byte 6 : minute (0..59)
** byte 7 : second (0..59)
** *********************************************************************************
** Porting Of LSI2108/2116 Based PCIE SAS/6G host raid adapter
** ==> Difference from IOP348
** <1> Message Register 0,1 (the same usage) Init Thread message and retrun code
** Inbound Message 0 (inbound_msgaddr0) : at offset 0xB0 (Scratchpad0) for inbound message code msgcode_rwbuffer (driver send to IOP)
** Inbound Message 1 (inbound_msgaddr1) : at offset 0xB4 (Scratchpad1) Out.... Diag Status Code
** Outbound Message 0 (outbound_msgaddr0): at offset 0xB8 (Scratchpad3) Out.... Diag Status Code
** Outbound Message 1 (outbound_msgaddr1): at offset 0xBC (Scratchpad2) for outbound message code msgcode_rwbuffer (IOP send to driver)
** <A> use doorbell to generate interrupt
**
** inbound doorbell: bit3 -- inbound message 0 ready (driver to iop)
** outbound doorbell: bit3 -- outbound message 0 ready (iop to driver)
**
** a. Message1: Out - Diag Status Code (????)
**
** b. Message0: message code
** 0x00 : NOP
** 0x01 : Get Config ->offset 0xB8 :for outbound message code msgcode_rwbuffer (IOP send to driver)
** Signature 0x87974060(4)
** Request len 0x00000200(4)
** numbers of queue 0x00000100(4)
** SDRAM Size 0x00000100(4)-->256 MB
** IDE Channels 0x00000008(4)
** vendor 40 bytes char
** model 8 bytes char
** FirmVer 16 bytes char
** Device Map 16 bytes char
** cfgVersion ULONG <== Added for checking of new firmware capability
** 0x02 : Set Config ->offset 0xB0 :for inbound message code msgcode_rwbuffer (driver send to IOP)
** Signature 0x87974063(4)
** UPPER32 of Request Frame (4)-->Driver Only
** 0x03 : Reset (Abort all queued Command)
** 0x04 : Stop Background Activity
** 0x05 : Flush Cache
** 0x06 : Start Background Activity (re-start if background is halted)
** 0x07 : Check If Host Command Pending (Novell May Need This Function)
** 0x08 : Set controller time ->offset 0xB0 : for inbound message code msgcode_rwbuffer (driver to IOP)
** byte 0 : 0xaa <-- signature
** byte 1 : 0x55 <-- signature
** byte 2 : year (04)
** byte 3 : month (1..12)
** byte 4 : date (1..31)
** byte 5 : hour (0..23)
** byte 6 : minute (0..59)
** byte 7 : second (0..59)
**
** <2> Doorbell Register is used for RS-232 emulation
** <A> different clear register
** <B> different bit0 definition (bit0 is reserved)
**
** inbound doorbell : at offset 0x20
** inbound doorbell clear : at offset 0x70
**
** inbound doorbell : bit0 -- reserved
** bit1 -- data in ready (DRIVER DATA WRITE OK)
** bit2 -- data out has been read (DRIVER DATA READ OK)
** bit3 -- inbound message 0 ready
** bit4 -- more than 12 request completed in a time
**
** outbound doorbell : at offset 0x9C
** outbound doorbell clear : at offset 0xA0
**
** outbound doorbell : bit0 -- reserved
** bit1 -- data out ready (IOP DATA WRITE OK)
** bit2 -- data in has been read (IOP DATA READ OK)
** bit3 -- outbound message 0 ready
**
** <3> Index Memory Usage (Buffer Area)
** COMPORT_IN at 0x2000: message_wbuffer -- 128 bytes (to be sent to ROC) : for RS232 in (scratch buffer)
** COMPORT_OUT at 0x2100: message_rbuffer -- 128 bytes (to be sent to host): for RS232 out (request buffer)
** BIOS_CFG_AREA at 0x2200: msgcode_rwbuffer -- 1024 bytes for outbound message code msgcode_rwbuffer (IOP send to driver)
** BIOS_CFG_AREA at 0x2200: msgcode_rwbuffer -- 1024 bytes for inbound message code msgcode_rwbuffer (driver send to IOP)
**
** <4> PostQ (Command Post Address)
** All SCSI Command must be sent through postQ:
** inbound queue port32 at offset 0x40 , 0x41, 0x42, 0x43
** inbound queue port64 at offset 0xC0 (lower)/0xC4 (upper)
** outbound queue port32 at offset 0x44
** outbound queue port64 at offset 0xC8 (lower)/0xCC (upper)
** <A> For 32bit queue, access low part is enough to send/receive request
** i.e. write 0x40/0xC0, ROC will get the request with high part == 0, the
** same for outbound queue port
** <B> For 64bit queue, if 64bit instruction is supported, use 64bit instruction
** to post inbound request in a single instruction, and use 64bit instruction
** to retrieve outbound request in a single instruction.
** If in 32bit environment, when sending inbound queue, write high part first
** then write low part. For receiving outbound request, read high part first
** then low part, to check queue empty, ONLY check high part to be 0xFFFFFFFF.
** If high part is 0xFFFFFFFF, DO NOT read low part, this may corrupt the
** consistency of the FIFO. Another way to check empty is to check status flag
** at 0x30 bit3.
** <C> Post Address IS NOT shifted (must be 16 bytes aligned)
** For BIOS, 16bytes aligned is OK
** For Driver, 32bytes alignment is recommended.
** POST Command bit0 to bit3 is defined differently
** ----------------------------
** bit0:1 for PULL mode (must be 1)
** ----------------------------
** bit3/2/1: for arcmsr cdb size (arccdbsize)
** 000: <= 0x0080 (128)
** 001: <= 0x0100 (256)
** 010: <= 0x0180 (384)
** 011: <= 0x0200 (512)
** 100: <= 0x0280 (640)
** 101: <= 0x0300 (768)
** 110: <= 0x0300 (reserved)
** 111: <= 0x0300 (reserved)
** -----------------------------
** if len > 0x300 the len always set as 0x300
** -----------------------------
** post addr = addr | ((len-1) >> 6) | 1
** -----------------------------
** page length in command buffer still required,
**
** if page length > 3,
** firmware will assume more request data need to be retrieved
**
** <D> Outbound Posting
** bit0:0 , no error, 1 with error, refer to status buffer
** bit1:0 , reserved (will be 0)
** bit2:0 , reserved (will be 0)
** bit3:0 , reserved (will be 0)
** bit63-4: Completed command address
**
** <E> BIOS support, no special support is required.
** LSI2108 support I/O register
** All driver functionality is supported through I/O address
**
** For further spec, refer to
** \spec\lsi\2108 for Areca\2108\LSISAS2108_PG_NoEncryption.pdf : Chapter 8 (8-11/8-28)
** \spec\lsi\2108 for Areca\2108\SAS2108_RM_20.pdf : for configuration space
************************************************************************************************
*/
/* signature of set and get firmware config */
#define ARCMSR_SIGNATURE_GET_CONFIG 0x87974060
#define ARCMSR_SIGNATURE_SET_CONFIG 0x87974063
/* message code of inbound message register */
#define ARCMSR_INBOUND_MESG0_NOP 0x00000000
#define ARCMSR_INBOUND_MESG0_GET_CONFIG 0x00000001
#define ARCMSR_INBOUND_MESG0_SET_CONFIG 0x00000002
#define ARCMSR_INBOUND_MESG0_ABORT_CMD 0x00000003
#define ARCMSR_INBOUND_MESG0_STOP_BGRB 0x00000004
#define ARCMSR_INBOUND_MESG0_FLUSH_CACHE 0x00000005
#define ARCMSR_INBOUND_MESG0_START_BGRB 0x00000006
#define ARCMSR_INBOUND_MESG0_CHK331PENDING 0x00000007
#define ARCMSR_INBOUND_MESG0_SYNC_TIMER 0x00000008
/* doorbell interrupt generator */
#define ARCMSR_INBOUND_DRIVER_DATA_WRITE_OK 0x00000001
#define ARCMSR_INBOUND_DRIVER_DATA_READ_OK 0x00000002
#define ARCMSR_OUTBOUND_IOP331_DATA_WRITE_OK 0x00000001
#define ARCMSR_OUTBOUND_IOP331_DATA_READ_OK 0x00000002
/* srb areca cdb flag */
#define ARCMSR_SRBPOST_FLAG_SGL_BSIZE 0x80000000
#define ARCMSR_SRBPOST_FLAG_IAM_BIOS 0x40000000
#define ARCMSR_SRBREPLY_FLAG_IAM_BIOS 0x40000000
#define ARCMSR_SRBREPLY_FLAG_ERROR 0x10000000
#define ARCMSR_SRBREPLY_FLAG_ERROR_MODE0 0x10000000
#define ARCMSR_SRBREPLY_FLAG_ERROR_MODE1 0x00000001
/* outbound firmware ok */
#define ARCMSR_OUTBOUND_MESG1_FIRMWARE_OK 0x80000000
/*
**********************************
**
**********************************
*/
/* size 8 bytes */
/* 32bit Scatter-Gather list */
struct SG32ENTRY { /* length bit 24 == 0 */
u_int32_t length; /* high 8 bit == flag,low 24 bit == length */
u_int32_t address;
};
/* size 12 bytes */
/* 64bit Scatter-Gather list */
struct SG64ENTRY { /* length bit 24 == 1 */
u_int32_t length; /* high 8 bit == flag,low 24 bit == length */
u_int32_t address;
u_int32_t addresshigh;
};
struct SGENTRY_UNION {
union {
struct SG32ENTRY sg32entry; /* 30h Scatter gather address */
struct SG64ENTRY sg64entry; /* 30h */
}u;
};
/*
**********************************
**
**********************************
*/
struct QBUFFER {
u_int32_t data_len;
u_int8_t data[124];
};
/*
************************************************************************************************
** FIRMWARE INFO
************************************************************************************************
*/
#define ARCMSR_FW_MODEL_OFFSET 15
#define ARCMSR_FW_VERS_OFFSET 17
#define ARCMSR_FW_DEVMAP_OFFSET 21
#define ARCMSR_FW_CFGVER_OFFSET 25
struct FIRMWARE_INFO {
u_int32_t signature; /*0,00-03*/
u_int32_t request_len; /*1,04-07*/
u_int32_t numbers_queue; /*2,08-11*/
u_int32_t sdram_size; /*3,12-15*/
u_int32_t ide_channels; /*4,16-19*/
char vendor[40]; /*5,20-59*/
char model[8]; /*15,60-67*/
char firmware_ver[16]; /*17,68-83*/
char device_map[16]; /*21,84-99*/
u_int32_t cfgVersion; /*25,100-103 Added for checking of new firmware capability*/
char cfgSerial[16]; /*26,104-119*/
u_int32_t cfgPicStatus; /*30,120-123*/
};
/* (A) For cfgVersion in FIRMWARE_INFO
** if low BYTE (byte#0) >= 3 (version 3)
** then byte#1 report the capability of the firmware can xfer in a single request
**
** byte#1
** 0 256K
** 1 512K
** 2 1M
** 3 2M
** 4 4M
** 5 8M
** 6 16M
** (B) Byte offset 7 (Reserved1) of CDB is changed to msgPages
** Driver support new xfer method need to set this field to indicate
** large CDB block in 0x100 unit (we use 0x100 byte as one page)
** e.g. If the length of CDB including MSG header and SGL is 0x1508
** driver need to set the msgPages to 0x16
** (C) REQ_LEN_512BYTE must be used also to indicate SRB length
** e.g. CDB len msgPages REQ_LEN_512BYTE flag
** <= 0x100 1 0
** <= 0x200 2 1
** <= 0x300 3 1
** <= 0x400 4 1
** .
** .
*/
/*
************************************************************************************************
** size 0x1F8 (504)
************************************************************************************************
*/
struct ARCMSR_CDB {
u_int8_t Bus; /* 00h should be 0 */
u_int8_t TargetID; /* 01h should be 0--15 */
u_int8_t LUN; /* 02h should be 0--7 */
u_int8_t Function; /* 03h should be 1 */
u_int8_t CdbLength; /* 04h not used now */
u_int8_t sgcount; /* 05h */
u_int8_t Flags; /* 06h */
#define ARCMSR_CDB_FLAG_SGL_BSIZE 0x01 /* bit 0: 0(256) / 1(512) bytes */
#define ARCMSR_CDB_FLAG_BIOS 0x02 /* bit 1: 0(from driver) / 1(from BIOS) */
#define ARCMSR_CDB_FLAG_WRITE 0x04 /* bit 2: 0(Data in) / 1(Data out) */
#define ARCMSR_CDB_FLAG_SIMPLEQ 0x00 /* bit 4/3 ,00 : simple Q,01 : head of Q,10 : ordered Q */
#define ARCMSR_CDB_FLAG_HEADQ 0x08
#define ARCMSR_CDB_FLAG_ORDEREDQ 0x10
u_int8_t msgPages; /* 07h */
u_int32_t Context; /* 08h Address of this request */
u_int32_t DataLength; /* 0ch not used now */
u_int8_t Cdb[16]; /* 10h SCSI CDB */
/*
********************************************************
**Device Status : the same from SCSI bus if error occur
** SCSI bus status codes.
********************************************************
*/
u_int8_t DeviceStatus; /* 20h if error */
#define SCSISTAT_GOOD 0x00
#define SCSISTAT_CHECK_CONDITION 0x02
#define SCSISTAT_CONDITION_MET 0x04
#define SCSISTAT_BUSY 0x08
#define SCSISTAT_INTERMEDIATE 0x10
#define SCSISTAT_INTERMEDIATE_COND_MET 0x14
#define SCSISTAT_RESERVATION_CONFLICT 0x18
#define SCSISTAT_COMMAND_TERMINATED 0x22
#define SCSISTAT_QUEUE_FULL 0x28
#define ARCMSR_DEV_SELECT_TIMEOUT 0xF0
#define ARCMSR_DEV_ABORTED 0xF1
#define ARCMSR_DEV_INIT_FAIL 0xF2
u_int8_t SenseData[15]; /* 21h output */
union {
struct SG32ENTRY sg32entry[ARCMSR_MAX_SG_ENTRIES]; /* 30h Scatter gather address */
struct SG64ENTRY sg64entry[ARCMSR_MAX_SG_ENTRIES]; /* 30h */
} u;
};
/*
*********************************************************************
** Command Control Block (SrbExtension)
** SRB must be not cross page boundary,and the order from offset 0
** structure describing an ATA disk request
** this SRB length must be 32 bytes boundary
*********************************************************************
*/
struct CommandControlBlock {
struct ARCMSR_CDB arcmsr_cdb; /* 0 -503 (size of CDB=504): arcmsr messenger scsi command descriptor size 504 bytes */
u_int32_t cdb_shifted_phyaddr; /* 504-507 */
u_int32_t arc_cdb_size; /* 508-511 */
/* ======================512+32 bytes============================ */
union ccb *pccb; /* 512-515 516-519 pointer of freebsd scsi command */
struct AdapterControlBlock *acb; /* 520-523 524-527 */
bus_dmamap_t dm_segs_dmamap; /* 528-531 532-535 */
u_int16_t srb_flags; /* 536-537 */
u_int16_t srb_state; /* 538-539 */
struct callout ccb_callout;
/* ========================================================== */
};
/* srb_flags */
#define SRB_FLAG_READ 0x0000
#define SRB_FLAG_WRITE 0x0001
#define SRB_FLAG_ERROR 0x0002
#define SRB_FLAG_FLUSHCACHE 0x0004
#define SRB_FLAG_MASTER_ABORTED 0x0008
#define SRB_FLAG_DMAVALID 0x0010
#define SRB_FLAG_DMACONSISTENT 0x0020
#define SRB_FLAG_DMAWRITE 0x0040
#define SRB_FLAG_PKTBIND 0x0080
#define SRB_FLAG_TIMER_START 0x0080
/* srb_state */
#define ARCMSR_SRB_DONE 0x0000
#define ARCMSR_SRB_UNBUILD 0x0000
#define ARCMSR_SRB_TIMEOUT 0x1111
#define ARCMSR_SRB_RETRY 0x2222
#define ARCMSR_SRB_START 0x55AA
#define ARCMSR_SRB_PENDING 0xAA55
#define ARCMSR_SRB_RESET 0xA5A5
#define ARCMSR_SRB_ABORTED 0x5A5A
#define ARCMSR_SRB_ILLEGAL 0xFFFF
/*
*********************************************************************
** Adapter Control Block
*********************************************************************
*/
#define ACB_ADAPTER_TYPE_A 0x00000001 /* hba I IOP */
#define ACB_ADAPTER_TYPE_B 0x00000002 /* hbb M IOP */
#define ACB_ADAPTER_TYPE_C 0x00000004 /* hbc L IOP */
#define ACB_ADAPTER_TYPE_D 0x00000008 /* hbd A IOP */
struct AdapterControlBlock {
u_int32_t adapter_type; /* adapter A,B..... */
bus_space_tag_t btag[2];
bus_space_handle_t bhandle[2];
bus_dma_tag_t parent_dmat;
bus_dma_tag_t dm_segs_dmat; /* dmat for buffer I/O */
bus_dma_tag_t srb_dmat; /* dmat for freesrb */
bus_dmamap_t srb_dmamap;
device_t pci_dev;
#if __FreeBSD_version < 503000
dev_t ioctl_dev;
#else
struct cdev *ioctl_dev;
#endif
int pci_unit;
struct resource *sys_res_arcmsr[2];
struct resource *irqres;
void *ih; /* interrupt handle */
/* Hooks into the CAM XPT */
struct cam_sim *psim;
struct cam_path *ppath;
u_int8_t *uncacheptr;
unsigned long vir2phy_offset;
union {
unsigned long phyaddr;
struct {
u_int32_t phyadd_low;
u_int32_t phyadd_high;
}B;
} srb_phyaddr;
// unsigned long srb_phyaddr;
/* Offset is used in making arc cdb physical to virtual calculations */
u_int32_t outbound_int_enable;
struct MessageUnit_UNION *pmu; /* message unit ATU inbound base address0 */
u_int8_t adapter_index; /* */
u_int8_t irq;
u_int16_t acb_flags; /* */
struct CommandControlBlock *psrb_pool[ARCMSR_MAX_FREESRB_NUM]; /* serial srb pointer array */
struct CommandControlBlock *srbworkingQ[ARCMSR_MAX_FREESRB_NUM]; /* working srb pointer array */
int32_t workingsrb_doneindex; /* done srb array index */
int32_t workingsrb_startindex; /* start srb array index */
int32_t srboutstandingcount;
u_int8_t rqbuffer[ARCMSR_MAX_QBUFFER]; /* data collection buffer for read from 80331 */
u_int32_t rqbuf_firstindex; /* first of read buffer */
u_int32_t rqbuf_lastindex; /* last of read buffer */
u_int8_t wqbuffer[ARCMSR_MAX_QBUFFER]; /* data collection buffer for write to 80331 */
u_int32_t wqbuf_firstindex; /* first of write buffer */
u_int32_t wqbuf_lastindex; /* last of write buffer */
arcmsr_lock_t workingQ_done_lock;
arcmsr_lock_t workingQ_start_lock;
arcmsr_lock_t qbuffer_lock;
u_int8_t devstate[ARCMSR_MAX_TARGETID][ARCMSR_MAX_TARGETLUN]; /* id0 ..... id15,lun0...lun7 */
u_int32_t num_resets;
u_int32_t num_aborts;
u_int32_t firm_request_len; /*1,04-07*/
u_int32_t firm_numbers_queue; /*2,08-11*/
u_int32_t firm_sdram_size; /*3,12-15*/
u_int32_t firm_ide_channels; /*4,16-19*/
u_int32_t firm_cfg_version;
char firm_model[12]; /*15,60-67*/
char firm_version[20]; /*17,68-83*/
char device_map[20]; /*21,84-99 */
struct callout devmap_callout;
#ifdef ARCMSR_DEBUG1
u_int32_t pktRequestCount;
u_int32_t pktReturnCount;
#endif
u_int32_t vendor_device_id;
u_int32_t adapter_bus_speed;
};/* HW_DEVICE_EXTENSION */
/* acb_flags */
#define ACB_F_SCSISTOPADAPTER 0x0001
#define ACB_F_MSG_STOP_BGRB 0x0002 /* stop RAID background rebuild */
#define ACB_F_MSG_START_BGRB 0x0004 /* stop RAID background rebuild */
#define ACB_F_IOPDATA_OVERFLOW 0x0008 /* iop ioctl data rqbuffer overflow */
#define ACB_F_MESSAGE_WQBUFFER_CLEARED 0x0010 /* ioctl clear wqbuffer */
#define ACB_F_MESSAGE_RQBUFFER_CLEARED 0x0020 /* ioctl clear rqbuffer */
#define ACB_F_MESSAGE_WQBUFFER_READ 0x0040
#define ACB_F_BUS_RESET 0x0080
#define ACB_F_IOP_INITED 0x0100 /* iop init */
#define ACB_F_MAPFREESRB_FAILD 0x0200 /* arcmsr_map_freesrb faild */
#define ACB_F_CAM_DEV_QFRZN 0x0400
#define ACB_F_BUS_HANG_ON 0x0800 /* need hardware reset bus */
#define ACB_F_SRB_FUNCTION_POWER 0x1000
/* devstate */
#define ARECA_RAID_GONE 0x55
#define ARECA_RAID_GOOD 0xaa
/* adapter_bus_speed */
#define ACB_BUS_SPEED_3G 0
#define ACB_BUS_SPEED_6G 1
#define ACB_BUS_SPEED_12G 2
/*
*********************************************************************
** Message Unit structure
*********************************************************************
*/
struct HBA_MessageUnit
{
u_int32_t resrved0[4]; /*0000 000F*/
u_int32_t inbound_msgaddr0; /*0010 0013*/
u_int32_t inbound_msgaddr1; /*0014 0017*/
u_int32_t outbound_msgaddr0; /*0018 001B*/
u_int32_t outbound_msgaddr1; /*001C 001F*/
u_int32_t inbound_doorbell; /*0020 0023*/
u_int32_t inbound_intstatus; /*0024 0027*/
u_int32_t inbound_intmask; /*0028 002B*/
u_int32_t outbound_doorbell; /*002C 002F*/
u_int32_t outbound_intstatus; /*0030 0033*/
u_int32_t outbound_intmask; /*0034 0037*/
u_int32_t reserved1[2]; /*0038 003F*/
u_int32_t inbound_queueport; /*0040 0043*/
u_int32_t outbound_queueport; /*0044 0047*/
u_int32_t reserved2[2]; /*0048 004F*/
u_int32_t reserved3[492]; /*0050 07FF ......local_buffer 492*/
u_int32_t reserved4[128]; /*0800 09FF 128*/
u_int32_t msgcode_rwbuffer[256]; /*0a00 0DFF 256*/
u_int32_t message_wbuffer[32]; /*0E00 0E7F 32*/
u_int32_t reserved5[32]; /*0E80 0EFF 32*/
u_int32_t message_rbuffer[32]; /*0F00 0F7F 32*/
u_int32_t reserved6[32]; /*0F80 0FFF 32*/
};
/*
*********************************************************************
**
*********************************************************************
*/
struct HBB_DOORBELL
{
u_int8_t doorbell_reserved[ARCMSR_DRV2IOP_DOORBELL]; /*reserved */
u_int32_t drv2iop_doorbell; /*offset 0x00020400:00,01,02,03: window of "instruction flags" from driver to iop */
u_int32_t drv2iop_doorbell_mask; /* 04,05,06,07: doorbell mask */
u_int32_t iop2drv_doorbell; /* 08,09,10,11: window of "instruction flags" from iop to driver */
u_int32_t iop2drv_doorbell_mask; /* 12,13,14,15: doorbell mask */
};
/*
*********************************************************************
**
*********************************************************************
*/
struct HBB_RWBUFFER
{
u_int8_t message_reserved0[ARCMSR_MSGCODE_RWBUFFER]; /*reserved */
u_int32_t msgcode_rwbuffer[256]; /*offset 0x0000fa00: 0, 1, 2, 3,...,1023: message code read write 1024bytes */
u_int32_t message_wbuffer[32]; /*offset 0x0000fe00:1024,1025,1026,1027,...,1151: user space data to iop 128bytes */
u_int32_t message_reserved1[32]; /* 1152,1153,1154,1155,...,1279: message reserved*/
u_int32_t message_rbuffer[32]; /*offset 0x0000ff00:1280,1281,1282,1283,...,1407: iop data to user space 128bytes */
};
/*
*********************************************************************
**
*********************************************************************
*/
struct HBB_MessageUnit
{
u_int32_t post_qbuffer[ARCMSR_MAX_HBB_POSTQUEUE]; /* post queue buffer for iop */
u_int32_t done_qbuffer[ARCMSR_MAX_HBB_POSTQUEUE]; /* done queue buffer for iop */
int32_t postq_index; /* post queue index */
int32_t doneq_index; /* done queue index */
struct HBB_DOORBELL *hbb_doorbell;
struct HBB_RWBUFFER *hbb_rwbuffer;
};
/*
*********************************************************************
**
*********************************************************************
*/
struct HBC_MessageUnit {
u_int32_t message_unit_status; /*0000 0003*/
u_int32_t slave_error_attribute; /*0004 0007*/
u_int32_t slave_error_address; /*0008 000B*/
u_int32_t posted_outbound_doorbell; /*000C 000F*/
u_int32_t master_error_attribute; /*0010 0013*/
u_int32_t master_error_address_low; /*0014 0017*/
u_int32_t master_error_address_high; /*0018 001B*/
u_int32_t hcb_size; /*001C 001F size of the PCIe window used for HCB_Mode accesses*/
u_int32_t inbound_doorbell; /*0020 0023*/
u_int32_t diagnostic_rw_data; /*0024 0027*/
u_int32_t diagnostic_rw_address_low; /*0028 002B*/
u_int32_t diagnostic_rw_address_high; /*002C 002F*/
u_int32_t host_int_status; /*0030 0033 host interrupt status*/
u_int32_t host_int_mask; /*0034 0037 host interrupt mask*/
u_int32_t dcr_data; /*0038 003B*/
u_int32_t dcr_address; /*003C 003F*/
u_int32_t inbound_queueport; /*0040 0043 port32 host inbound queue port*/
u_int32_t outbound_queueport; /*0044 0047 port32 host outbound queue port*/
u_int32_t hcb_pci_address_low; /*0048 004B*/
u_int32_t hcb_pci_address_high; /*004C 004F*/
u_int32_t iop_int_status; /*0050 0053*/
u_int32_t iop_int_mask; /*0054 0057*/
u_int32_t iop_inbound_queue_port; /*0058 005B*/
u_int32_t iop_outbound_queue_port; /*005C 005F*/
u_int32_t inbound_free_list_index; /*0060 0063 inbound free list producer consumer index*/
u_int32_t inbound_post_list_index; /*0064 0067 inbound post list producer consumer index*/
u_int32_t outbound_free_list_index; /*0068 006B outbound free list producer consumer index*/
u_int32_t outbound_post_list_index; /*006C 006F outbound post list producer consumer index*/
u_int32_t inbound_doorbell_clear; /*0070 0073*/
u_int32_t i2o_message_unit_control; /*0074 0077*/
u_int32_t last_used_message_source_address_low; /*0078 007B*/
u_int32_t last_used_message_source_address_high; /*007C 007F*/
u_int32_t pull_mode_data_byte_count[4]; /*0080 008F pull mode data byte count0..count7*/
u_int32_t message_dest_address_index; /*0090 0093*/
u_int32_t done_queue_not_empty_int_counter_timer; /*0094 0097*/
u_int32_t utility_A_int_counter_timer; /*0098 009B*/
u_int32_t outbound_doorbell; /*009C 009F*/
u_int32_t outbound_doorbell_clear; /*00A0 00A3*/
u_int32_t message_source_address_index; /*00A4 00A7 message accelerator source address consumer producer index*/
u_int32_t message_done_queue_index; /*00A8 00AB message accelerator completion queue consumer producer index*/
u_int32_t reserved0; /*00AC 00AF*/
u_int32_t inbound_msgaddr0; /*00B0 00B3 scratchpad0*/
u_int32_t inbound_msgaddr1; /*00B4 00B7 scratchpad1*/
u_int32_t outbound_msgaddr0; /*00B8 00BB scratchpad2*/
u_int32_t outbound_msgaddr1; /*00BC 00BF scratchpad3*/
u_int32_t inbound_queueport_low; /*00C0 00C3 port64 host inbound queue port low*/
u_int32_t inbound_queueport_high; /*00C4 00C7 port64 host inbound queue port high*/
u_int32_t outbound_queueport_low; /*00C8 00CB port64 host outbound queue port low*/
u_int32_t outbound_queueport_high; /*00CC 00CF port64 host outbound queue port high*/
u_int32_t iop_inbound_queue_port_low; /*00D0 00D3*/
u_int32_t iop_inbound_queue_port_high; /*00D4 00D7*/
u_int32_t iop_outbound_queue_port_low; /*00D8 00DB*/
u_int32_t iop_outbound_queue_port_high; /*00DC 00DF*/
u_int32_t message_dest_queue_port_low; /*00E0 00E3 message accelerator destination queue port low*/
u_int32_t message_dest_queue_port_high; /*00E4 00E7 message accelerator destination queue port high*/
u_int32_t last_used_message_dest_address_low; /*00E8 00EB last used message accelerator destination address low*/
u_int32_t last_used_message_dest_address_high; /*00EC 00EF last used message accelerator destination address high*/
u_int32_t message_done_queue_base_address_low; /*00F0 00F3 message accelerator completion queue base address low*/
u_int32_t message_done_queue_base_address_high; /*00F4 00F7 message accelerator completion queue base address high*/
u_int32_t host_diagnostic; /*00F8 00FB*/
u_int32_t write_sequence; /*00FC 00FF*/
u_int32_t reserved1[34]; /*0100 0187*/
u_int32_t reserved2[1950]; /*0188 1FFF*/
u_int32_t message_wbuffer[32]; /*2000 207F*/
u_int32_t reserved3[32]; /*2080 20FF*/
u_int32_t message_rbuffer[32]; /*2100 217F*/
u_int32_t reserved4[32]; /*2180 21FF*/
u_int32_t msgcode_rwbuffer[256]; /*2200 23FF*/
};
/*
*********************************************************************
**
*********************************************************************
*/
struct MessageUnit_UNION
{
union {
struct HBA_MessageUnit hbamu;
struct HBB_MessageUnit hbbmu;
struct HBC_MessageUnit hbcmu;
} muu;
};
/*
*************************************************************
*************************************************************
*/
struct SENSE_DATA {
u_int8_t ErrorCode:7;
u_int8_t Valid:1;
u_int8_t SegmentNumber;
u_int8_t SenseKey:4;
u_int8_t Reserved:1;
u_int8_t IncorrectLength:1;
u_int8_t EndOfMedia:1;
u_int8_t FileMark:1;
u_int8_t Information[4];
u_int8_t AdditionalSenseLength;
u_int8_t CommandSpecificInformation[4];
u_int8_t AdditionalSenseCode;
u_int8_t AdditionalSenseCodeQualifier;
u_int8_t FieldReplaceableUnitCode;
u_int8_t SenseKeySpecific[3];
};
/*
**********************************
** Peripheral Device Type definitions
**********************************
*/
#define SCSI_DASD 0x00 /* Direct-access Device */
#define SCSI_SEQACESS 0x01 /* Sequential-access device */
#define SCSI_PRINTER 0x02 /* Printer device */
#define SCSI_PROCESSOR 0x03 /* Processor device */
#define SCSI_WRITEONCE 0x04 /* Write-once device */
#define SCSI_CDROM 0x05 /* CD-ROM device */
#define SCSI_SCANNER 0x06 /* Scanner device */
#define SCSI_OPTICAL 0x07 /* Optical memory device */
#define SCSI_MEDCHGR 0x08 /* Medium changer device */
#define SCSI_COMM 0x09 /* Communications device */
#define SCSI_NODEV 0x1F /* Unknown or no device type */
/*
************************************************************************************************************
** @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
** 80331 PCI-to-PCI Bridge
** PCI Configuration Space
**
** @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
** Programming Interface
** ========================
** Configuration Register Address Space Groupings and Ranges
** =============================================================
** Register Group Configuration Offset
** -------------------------------------------------------------
** Standard PCI Configuration 00-3Fh
** -------------------------------------------------------------
** Device Specific Registers 40-A7h
** -------------------------------------------------------------
** Reserved A8-CBh
** -------------------------------------------------------------
** Enhanced Capability List CC-FFh
** ==========================================================================================================
** Standard PCI [Type 1] Configuration Space Address Map
** **********************************************************************************************************
** | Byte 3 | Byte 2 | Byte 1 | Byte 0 | Configu-ration Byte Offset
** ----------------------------------------------------------------------------------------------------------
** | Device ID | Vendor ID | 00h
** ----------------------------------------------------------------------------------------------------------
** | Primary Status | Primary Command | 04h
** ----------------------------------------------------------------------------------------------------------
** | Class Code | RevID | 08h
** ----------------------------------------------------------------------------------------------------------
** | reserved | Header Type | Primary MLT | Primary CLS | 0Ch
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 10h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 14h
** ----------------------------------------------------------------------------------------------------------
** | Secondary MLT | Subordinate Bus Number | Secondary Bus Number | Primary Bus Number | 18h
** ----------------------------------------------------------------------------------------------------------
** | Secondary Status | I/O Limit | I/O Base | 1Ch
** ----------------------------------------------------------------------------------------------------------
** | Non-prefetchable Memory Limit Address | Non-prefetchable Memory Base Address | 20h
** ----------------------------------------------------------------------------------------------------------
** | Prefetchable Memory Limit Address | Prefetchable Memory Base Address | 24h
** ----------------------------------------------------------------------------------------------------------
** | Prefetchable Memory Base Address Upper 32 Bits | 28h
** ----------------------------------------------------------------------------------------------------------
** | Prefetchable Memory Limit Address Upper 32 Bits | 2Ch
** ----------------------------------------------------------------------------------------------------------
** | I/O Limit Upper 16 Bits | I/O Base Upper 16 | 30h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Capabilities Pointer | 34h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 38h
** ----------------------------------------------------------------------------------------------------------
** | Bridge Control | Primary Interrupt Pin | Primary Interrupt Line | 3Ch
**=============================================================================================================
*/
/*
**=============================================================================================================
** 0x03-0x00 :
** Bit Default Description
**31:16 0335h Device ID (DID): Indicates the unique device ID that is assigned to bridge by the PCI SIG.
** ID is unique per product speed as indicated.
**15:00 8086h Vendor ID (VID): 16-bit field which indicates that Intel is the vendor.
**=============================================================================================================
*/
#define ARCMSR_PCI2PCI_VENDORID_REG 0x00 /*word*/
#define ARCMSR_PCI2PCI_DEVICEID_REG 0x02 /*word*/
/*
**==============================================================================
** 0x05-0x04 : command register
** Bit Default Description
**15:11 00h Reserved
** 10 0 Interrupt Disable: Disables/Enables the generation of Interrupts on the primary bus.
** The bridge does not support interrupts.
** 09 0 FB2B Enable: Enables/Disables the generation of fast back to back
** transactions on the primary bus.
** The bridge does not generate fast back to back
** transactions on the primary bus.
** 08 0 SERR# Enable (SEE): Enables primary bus SERR# assertions.
** 0=The bridge does not assert P_SERR#.
** 1=The bridge may assert P_SERR#, subject to other programmable criteria.
** 07 0 Wait Cycle Control (WCC): Always returns 0bzero indicating
** that bridge does not perform address or data stepping,
** 06 0 Parity Error Response (PER): Controls bridge response to a detected primary bus parity error.
** 0=When a data parity error is detected bridge does not assert S_PERR#.
** Also bridge does not assert P_SERR# in response to
** a detected address or attribute parity error.
** 1=When a data parity error is detected bridge asserts S_PERR#.
** The bridge also asserts P_SERR#
** (when enabled globally via bit(8) of this register)
** in response to a detected address or attribute parity error.
** 05 0 VGA Palette Snoop Enable (VGA_PSE): Controls bridge response to VGA-compatible palette write transactions.
** VGA palette write transactions are I/O transactions
** whose address bits are: P_AD[9:0] equal to 3C6h, 3C8h or 3C9h
** P_AD[15:10] are not decoded (i.e. aliases are claimed),
** or are fully decoding
** (i.e., must be all 0's depending upon the VGA
** aliasing bit in the Bridge Control Register, offset 3Eh.
** P_AD[31:16] equal to 0000h
** 0=The bridge ignores VGA palette write transactions,
** unless decoded by the standard I/O address range window.
** 1=The bridge responds to VGA palette write transactions
** with medium DEVSEL# timing and forwards them to the secondary bus.
** 04 0 Memory Write and Invalidate Enable (MWIE): The bridge does not promote MW transactions to MWI transactions.
** MWI transactions targeting resources on the opposite side of the bridge,
** however, are forwarded as MWI transactions.
** 03 0 Special Cycle Enable (SCE): The bridge ignores special cycle transactions.
** This bit is read only and always returns 0 when read
** 02 0 Bus Master Enable (BME): Enables bridge to initiate memory and I/O transactions on the primary interface.
** Initiation of configuration transactions is not affected by the state of this bit.
** 0=The bridge does not initiate memory or I/O transactions on the primary interface.
** 1=The bridge is enabled to function as an initiator on the primary interface.
** 01 0 Memory Space Enable (MSE): Controls target response to memory transactions on the primary interface.
** 0=The bridge target response to memory transactions on the primary interface is disabled.
** 1=The bridge target response to memory transactions on the primary interface is enabled.
** 00 0 I/O Space Enable (IOSE): Controls target response to I/O transactions on the primary interface.
** 0=The bridge target response to I/O transactions on the primary interface is disabled.
** 1=The bridge target response to I/O transactions on the primary interface is enabled.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PRIMARY_COMMAND_REG 0x04 /*word*/
#define PCI_DISABLE_INTERRUPT 0x0400
/*
**==============================================================================
** 0x07-0x06 : status register
** Bit Default Description
** 15 0 Detected Parity Error: The bridge sets this bit to a 1b whenever it detects an address,
** attribute or data parity error.
** This bit is set regardless of the state of the PER bit in the command register.
** 14 0 Signaled System Error: The bridge sets this bit to a 1b whenever it asserts SERR# on the primary bus.
** 13 0 Received Master Abort: The bridge sets this bit to a 1b when,
** acting as the initiator on the primary bus,
** its transaction (with the exception of special cycles)
** has been terminated with a Master Abort.
** 12 0 Received Target Abort: The bridge sets this bit to a 1b when,
** acting as the initiator on the primary bus,
** its transaction has been terminated with a Target Abort.
** 11 0 Signaled Target Abort: The bridge sets this bit to a 1b when it,
** as the target of a transaction, terminates it with a Target Abort.
** In PCI-X mode this bit is also set when it forwards a SCM with a target abort error code.
** 10:09 01 DEVSEL# Timing: Indicates slowest response to a non-configuration command on the primary interface.
** Returns Ħ§01bĦ¨ when read, indicating that bridge responds no slower than with medium timing.
** 08 0 Master Data Parity Error: The bridge sets this bit to a 1b when all of the following conditions are true:
** The bridge is the current master on the primary bus
** S_PERR# is detected asserted or is asserted by bridge
** The Parity Error Response bit is set in the Command register
** 07 1 Fast Back to Back Capable: Returns a 1b when read indicating that bridge
** is able to respond to fast back to back transactions on its primary interface.
** 06 0 Reserved
** 05 1 66 MHz Capable Indication: Returns a 1b when read indicating that bridge primary interface is 66 MHz capable.
** 1 =
** 04 1 Capabilities List Enable: Returns 1b when read indicating that bridge supports PCI standard enhanced capabilities.
** Offset 34h (Capability Pointer register)
** provides the offset for the first entry
** in the linked list of enhanced capabilities.
** 03 0 Interrupt Status: Reflects the state of the interrupt in the device/function.
** The bridge does not support interrupts.
** 02:00 000 Reserved
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PRIMARY_STATUS_REG 0x06 /*word: 06,07 */
#define ARCMSR_ADAP_66MHZ 0x20
/*
**==============================================================================
** 0x08 : revision ID
** Bit Default Description
** 07:00 00000000 Revision ID (RID): '00h' indicating bridge A-0 stepping.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_REVISIONID_REG 0x08 /*byte*/
/*
**==============================================================================
** 0x0b-0x09 : 0180_00 (class code 1,native pci mode )
** Bit Default Description
** 23:16 06h Base Class Code (BCC): Indicates that this is a bridge device.
** 15:08 04h Sub Class Code (SCC): Indicates this is of type PCI-to-PCI bridge.
** 07:00 00h Programming Interface (PIF): Indicates that this is standard (non-subtractive) PCI-PCI bridge.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_CLASSCODE_REG 0x09 /*3bytes*/
/*
**==============================================================================
** 0x0c : cache line size
** Bit Default Description
** 07:00 00h Cache Line Size (CLS): Designates the cache line size in 32-bit dword units.
** The contents of this register are factored into
** internal policy decisions associated with memory read prefetching,
** and the promotion of Memory Write transactions to MWI transactions.
** Valid cache line sizes are 8 and 16 dwords.
** When the cache line size is set to an invalid value,
** bridge behaves as though the cache line size was set to 00h.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PRIMARY_CACHELINESIZE_REG 0x0C /*byte*/
/*
**==============================================================================
** 0x0d : latency timer (number of pci clock 00-ff )
** Bit Default Description
** Primary Latency Timer (PTV):
** 07:00 00h (Conventional PCI) Conventional PCI Mode: Primary bus Master latency timer. Indicates the number of PCI clock cycles,
** referenced from the assertion of FRAME# to the expiration of the timer,
** when bridge may continue as master of the current transaction. All bits are writable,
** resulting in a granularity of 1 PCI clock cycle.
** When the timer expires (i.e., equals 00h)
** bridge relinquishes the bus after the first data transfer
** when its PCI bus grant has been deasserted.
** or 40h (PCI-X) PCI-X Mode: Primary bus Master latency timer.
** Indicates the number of PCI clock cycles,
** referenced from the assertion of FRAME# to the expiration of the timer,
** when bridge may continue as master of the current transaction.
** All bits are writable, resulting in a granularity of 1 PCI clock cycle.
** When the timer expires (i.e., equals 00h) bridge relinquishes the bus at the next ADB.
** (Except in the case where MLT expires within 3 data phases
** of an ADB.In this case bridge continues on
** until it reaches the next ADB before relinquishing the bus.)
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PRIMARY_LATENCYTIMER_REG 0x0D /*byte*/
/*
**==============================================================================
** 0x0e : (header type,single function )
** Bit Default Description
** 07 0 Multi-function device (MVD): 80331 is a single-function device.
** 06:00 01h Header Type (HTYPE): Defines the layout of addresses 10h through 3Fh in configuration space.
** Returns Ħ§01hĦ¨ when read indicating
** that the register layout conforms to the standard PCI-to-PCI bridge layout.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_HEADERTYPE_REG 0x0E /*byte*/
/*
**==============================================================================
** 0x0f :
**==============================================================================
*/
/*
**==============================================================================
** 0x13-0x10 :
** PCI CFG Base Address #0 (0x10)
**==============================================================================
*/
/*
**==============================================================================
** 0x17-0x14 :
** PCI CFG Base Address #1 (0x14)
**==============================================================================
*/
/*
**==============================================================================
** 0x1b-0x18 :
** PCI CFG Base Address #2 (0x18)
**-----------------0x1A,0x19,0x18--Bus Number Register - BNR
** Bit Default Description
** 23:16 00h Subordinate Bus Number (SBBN): Indicates the highest PCI bus number below this bridge.
** Any Type 1 configuration cycle
** on the primary bus whose bus number is greater than the secondary bus number,
** and less than or equal to the subordinate bus number
** is forwarded unaltered as a Type 1 configuration cycle on the secondary PCI bus.
** 15:08 00h Secondary Bus Number (SCBN): Indicates the bus number of PCI to which the secondary interface is connected.
** Any Type 1 configuration cycle matching this bus number
** is translated to a Type 0 configuration cycle (or a Special Cycle)
** before being executed on bridge's secondary PCI bus.
** 07:00 00h Primary Bus Number (PBN): Indicates bridge primary bus number.
** Any Type 1 configuration cycle on the primary interface
** with a bus number that is less than the contents
** of this register field does not be claimed by bridge.
**-----------------0x1B--Secondary Latency Timer Register - SLTR
** Bit Default Description
** Secondary Latency Timer (STV):
** 07:00 00h (Conventional PCI) Conventional PCI Mode: Secondary bus Master latency timer.
** Indicates the number of PCI clock cycles,
** referenced from the assertion of FRAME# to the expiration of the timer,
** when bridge may continue as master of the current transaction. All bits are writable,
** resulting in a granularity of 1 PCI clock cycle.
** When the timer expires (i.e., equals 00h)
** bridge relinquishes the bus after the first data transfer
** when its PCI bus grant has been deasserted.
** or 40h (PCI-X) PCI-X Mode: Secondary bus Master latency timer.
** Indicates the number of PCI clock cycles,referenced from the assertion of FRAME#
** to the expiration of the timer,
** when bridge may continue as master of the current transaction. All bits are writable,
** resulting in a granularity of 1 PCI clock cycle.
** When the timer expires (i.e., equals 00h) bridge relinquishes the bus at the next ADB.
** (Except in the case where MLT expires within 3 data phases of an ADB.
** In this case bridge continues on until it reaches the next ADB
** before relinquishing the bus)
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PRIMARY_BUSNUMBER_REG 0x18 /*3byte 0x1A,0x19,0x18*/
#define ARCMSR_PCI2PCI_SECONDARY_BUSNUMBER_REG 0x19 /*byte*/
#define ARCMSR_PCI2PCI_SUBORDINATE_BUSNUMBER_REG 0x1A /*byte*/
#define ARCMSR_PCI2PCI_SECONDARY_LATENCYTIMER_REG 0x1B /*byte*/
/*
**==============================================================================
** 0x1f-0x1c :
** PCI CFG Base Address #3 (0x1C)
**-----------------0x1D,0x1C--I/O Base and Limit Register - IOBL
** Bit Default Description
** 15:12 0h I/O Limit Address Bits [15:12]: Defines the top address of an address range to
** determine when to forward I/O transactions from one interface to the other.
** These bits correspond to address lines 15:12 for 4KB alignment.
** Bits 11:0 are assumed to be FFFh.
** 11:08 1h I/O Limit Addressing Capability: This field is hard-wired to 1h, indicating support 32-bit I/O addressing.
** 07:04 0h I/O Base Address Bits [15:12]: Defines the bottom address of
** an address range to determine when to forward I/O transactions
** from one interface to the other.
** These bits correspond to address lines 15:12 for 4KB alignment.
** Bits 11:0 are assumed to be 000h.
** 03:00 1h I/O Base Addressing Capability: This is hard-wired to 1h, indicating support for 32-bit I/O addressing.
**-----------------0x1F,0x1E--Secondary Status Register - SSR
** Bit Default Description
** 15 0b Detected Parity Error: The bridge sets this bit to a 1b whenever it detects an address,
** attribute or data parity error on its secondary interface.
** 14 0b Received System Error: The bridge sets this bit when it samples SERR# asserted on its secondary bus interface.
** 13 0b Received Master Abort: The bridge sets this bit to a 1b when,
** acting as the initiator on the secondary bus,
** it's transaction (with the exception of special cycles)
** has been terminated with a Master Abort.
** 12 0b Received Target Abort: The bridge sets this bit to a 1b when,
** acting as the initiator on the secondary bus,
** it's transaction has been terminated with a Target Abort.
** 11 0b Signaled Target Abort: The bridge sets this bit to a 1b when it,
** as the target of a transaction, terminates it with a Target Abort.
** In PCI-X mode this bit is also set when it forwards a SCM with a target abort error code.
** 10:09 01b DEVSEL# Timing: Indicates slowest response to a non-configuration command on the secondary interface.
** Returns Ħ§01bĦ¨ when read, indicating that bridge responds no slower than with medium timing.
** 08 0b Master Data Parity Error: The bridge sets this bit to a 1b when all of the following conditions are true:
** The bridge is the current master on the secondary bus
** S_PERR# is detected asserted or is asserted by bridge
** The Parity Error Response bit is set in the Command register
** 07 1b Fast Back-to-Back Capable (FBC): Indicates that the secondary interface of bridge can receive fast back-to-back cycles.
** 06 0b Reserved
** 05 1b 66 MHz Capable (C66): Indicates the secondary interface of the bridge is 66 MHz capable.
** 1 =
** 04:00 00h Reserved
**==============================================================================
*/
#define ARCMSR_PCI2PCI_IO_BASE_REG 0x1C /*byte*/
#define ARCMSR_PCI2PCI_IO_LIMIT_REG 0x1D /*byte*/
#define ARCMSR_PCI2PCI_SECONDARY_STATUS_REG 0x1E /*word: 0x1F,0x1E */
/*
**==============================================================================
** 0x23-0x20 :
** PCI CFG Base Address #4 (0x20)
**-----------------0x23,0x22,0x21,0x20--Memory Base and Limit Register - MBL
** Bit Default Description
** 31:20 000h Memory Limit: These 12 bits are compared with P_AD[31:20] of the incoming address to determine
** the upper 1MB aligned value (exclusive) of the range.
** The incoming address must be less than or equal to this value.
** For the purposes of address decoding the lower 20 address bits (P_AD[19:0]
** are assumed to be F FFFFh.
** 19:16 0h Reserved.
** 15:04 000h Memory Base: These 12 bits are compared with bits P_AD[31:20]
** of the incoming address to determine the lower 1MB
** aligned value (inclusive) of the range.
** The incoming address must be greater than or equal to this value.
** For the purposes of address decoding the lower 20 address bits (P_AD[19:0])
** are assumed to be 0 0000h.
** 03:00 0h Reserved.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_NONPREFETCHABLE_MEMORY_BASE_REG 0x20 /*word: 0x21,0x20 */
#define ARCMSR_PCI2PCI_NONPREFETCHABLE_MEMORY_LIMIT_REG 0x22 /*word: 0x23,0x22 */
/*
**==============================================================================
** 0x27-0x24 :
** PCI CFG Base Address #5 (0x24)
**-----------------0x27,0x26,0x25,0x24--Prefetchable Memory Base and Limit Register - PMBL
** Bit Default Description
** 31:20 000h Prefetchable Memory Limit: These 12 bits are compared with P_AD[31:20] of the incoming address to determine
** the upper 1MB aligned value (exclusive) of the range.
** The incoming address must be less than or equal to this value.
** For the purposes of address decoding the lower 20 address bits (P_AD[19:0]
** are assumed to be F FFFFh.
** 19:16 1h 64-bit Indicator: Indicates that 64-bit addressing is supported.
** 15:04 000h Prefetchable Memory Base: These 12 bits are compared with bits P_AD[31:20]
** of the incoming address to determine the lower 1MB aligned value (inclusive)
** of the range.
** The incoming address must be greater than or equal to this value.
** For the purposes of address decoding the lower 20 address bits (P_AD[19:0])
** are assumed to be 0 0000h.
** 03:00 1h 64-bit Indicator: Indicates that 64-bit addressing is supported.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PREFETCHABLE_MEMORY_BASE_REG 0x24 /*word: 0x25,0x24 */
#define ARCMSR_PCI2PCI_PREFETCHABLE_MEMORY_LIMIT_REG 0x26 /*word: 0x27,0x26 */
/*
**==============================================================================
** 0x2b-0x28 :
** Bit Default Description
** 31:00 00000000h Prefetchable Memory Base Upper Portion: All bits are read/writable
** bridge supports full 64-bit addressing.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PREFETCHABLE_MEMORY_BASE_UPPER32_REG 0x28 /*dword: 0x2b,0x2a,0x29,0x28 */
/*
**==============================================================================
** 0x2f-0x2c :
** Bit Default Description
** 31:00 00000000h Prefetchable Memory Limit Upper Portion: All bits are read/writable
** bridge supports full 64-bit addressing.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PREFETCHABLE_MEMORY_LIMIT_UPPER32_REG 0x2C /*dword: 0x2f,0x2e,0x2d,0x2c */
/*
**==============================================================================
** 0x33-0x30 :
** Bit Default Description
** 07:00 DCh Capabilities Pointer: Pointer to the first CAP ID entry in the capabilities list is at DCh in PCI configuration
** space. (Power Management Capability Registers)
**==============================================================================
*/
#define ARCMSR_PCI2PCI_CAPABILITIES_POINTER_REG 0x34 /*byte*/
/*
**==============================================================================
** 0x3b-0x35 : reserved
**==============================================================================
*/
/*
**==============================================================================
** 0x3d-0x3c :
**
** Bit Default Description
** 15:08 00h Interrupt Pin (PIN): Bridges do not support the generation of interrupts.
** 07:00 00h Interrupt Line (LINE): The bridge does not generate interrupts, so this is reserved as '00h'.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_PRIMARY_INTERRUPT_LINE_REG 0x3C /*byte*/
#define ARCMSR_PCI2PCI_PRIMARY_INTERRUPT_PIN_REG 0x3D /*byte*/
/*
**==============================================================================
** 0x3f-0x3e :
** Bit Default Description
** 15:12 0h Reserved
** 11 0b Discard Timer SERR# Enable: Controls the generation of SERR# on the primary interface (P_SERR#) in response
** to a timer discard on either the primary or secondary interface.
** 0b=SERR# is not asserted.
** 1b=SERR# is asserted.
** 10 0b Discard Timer Status (DTS): This bit is set to a '1b' when either the primary or secondary discard timer expires.
** The delayed completion is then discarded.
** 09 0b Secondary Discard Timer (SDT): Sets the maximum number of PCI clock cycles
** that bridge waits for an initiator on the secondary bus
** to repeat a delayed transaction request.
** The counter starts when the delayed transaction completion is ready
** to be returned to the initiator.
** When the initiator has not repeated the transaction
** at least once before the counter expires,bridge
** discards the delayed transaction from its queues.
** 0b=The secondary master time-out counter is 2 15 PCI clock cycles.
** 1b=The secondary master time-out counter is 2 10 PCI clock cycles.
** 08 0b Primary Discard Timer (PDT): Sets the maximum number of PCI clock cycles
** that bridge waits for an initiator on the primary bus
** to repeat a delayed transaction request.
** The counter starts when the delayed transaction completion
** is ready to be returned to the initiator.
** When the initiator has not repeated the transaction
** at least once before the counter expires,
** bridge discards the delayed transaction from its queues.
** 0b=The primary master time-out counter is 2 15 PCI clock cycles.
** 1b=The primary master time-out counter is 2 10 PCI clock cycles.
** 07 0b Fast Back-to-Back Enable (FBE): The bridge does not initiate back to back transactions.
** 06 0b Secondary Bus Reset (SBR):
** When cleared to 0b: The bridge deasserts S_RST#,
** when it had been asserted by writing this bit to a 1b.
** When set to 1b: The bridge asserts S_RST#.
** 05 0b Master Abort Mode (MAM): Dictates bridge behavior on the initiator bus
** when a master abort termination occurs in response to
** a delayed transaction initiated by bridge on the target bus.
** 0b=The bridge asserts TRDY# in response to a non-locked delayed transaction,
** and returns FFFF FFFFh when a read.
** 1b=When the transaction had not yet been completed on the initiator bus
** (e.g.,delayed reads, or non-posted writes),
** then bridge returns a Target Abort in response to the original requester
** when it returns looking for its delayed completion on the initiator bus.
** When the transaction had completed on the initiator bus (e.g., a PMW),
** then bridge asserts P_SERR# (when enabled).
** For PCI-X transactions this bit is an enable for the assertion of P_SERR# due to a master abort
** while attempting to deliver a posted memory write on the destination bus.
** 04 0b VGA Alias Filter Enable: This bit dictates bridge behavior in conjunction with the VGA enable bit
** (also of this register),
** and the VGA Palette Snoop Enable bit (Command Register).
** When the VGA enable, or VGA Palette Snoop enable bits are on (i.e., 1b)
** the VGA Aliasing bit for the corresponding enabled functionality,:
** 0b=Ignores address bits AD[15:10] when decoding VGA I/O addresses.
** 1b=Ensures that address bits AD[15:10] equal 000000b when decoding VGA I/O addresses.
** When all VGA cycle forwarding is disabled, (i.e., VGA Enable bit =0b and VGA Palette Snoop bit =0b),
** then this bit has no impact on bridge behavior.
** 03 0b VGA Enable: Setting this bit enables address decoding
** and transaction forwarding of the following VGA transactions from the primary bus
** to the secondary bus:
** frame buffer memory addresses 000A0000h:000BFFFFh,
** VGA I/O addresses 3B0:3BBh and 3C0h:3DFh, where AD[31:16]=Ħ§0000h?** ?and AD[15:10] are either not decoded (i.e., don't cares),
** or must be Ħ§000000bĦ¨
** depending upon the state of the VGA Alias Filter Enable bit. (bit(4) of this register)
** I/O and Memory Enable bits must be set in the Command register
** to enable forwarding of VGA cycles.
** 02 0b ISA Enable: Setting this bit enables special handling
** for the forwarding of ISA I/O transactions that fall within the address range
** specified by the I/O Base and Limit registers,
** and are within the lowest 64Kbyte of the I/O address map
** (i.e., 0000 0000h - 0000 FFFFh).
** 0b=All I/O transactions that fall within the I/O Base
** and Limit registers' specified range are forwarded
** from primary to secondary unfiltered.
** 1b=Blocks the forwarding from primary to secondary
** of the top 768 bytes of each 1Kbyte alias.
** On the secondary the top 768 bytes of each 1K alias
** are inversely decoded and forwarded
** from secondary to primary.
** 01 0b SERR# Forward Enable: 0b=The bridge does not assert P_SERR# as a result of an S_SERR# assertion.
** 1b=The bridge asserts P_SERR# whenever S_SERR# is detected
** asserted provided the SERR# Enable bit is set (PCI Command Register bit(8)=1b).
** 00 0b Parity Error Response: This bit controls bridge response to a parity error
** that is detected on its secondary interface.
** 0b=When a data parity error is detected bridge does not assert S_PERR#.
** Also bridge does not assert P_SERR# in response to a detected address
** or attribute parity error.
** 1b=When a data parity error is detected bridge asserts S_PERR#.
** The bridge also asserts P_SERR# (when enabled globally via bit(8)
** of the Command register)
** in response to a detected address or attribute parity error.
**==============================================================================
*/
#define ARCMSR_PCI2PCI_BRIDGE_CONTROL_REG 0x3E /*word*/
/*
**************************************************************************
** Device Specific Registers 40-A7h
**************************************************************************
** ----------------------------------------------------------------------------------------------------------
** | Byte 3 | Byte 2 | Byte 1 | Byte 0 | Configu-ration Byte Offset
** ----------------------------------------------------------------------------------------------------------
** | Bridge Control 0 | Arbiter Control/Status | Reserved | 40h
** ----------------------------------------------------------------------------------------------------------
** | Bridge Control 2 | Bridge Control 1 | 44h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Bridge Status | 48h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 4Ch
** ----------------------------------------------------------------------------------------------------------
** | Prefetch Policy | Multi-Transaction Timer | 50h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Pre-boot Status | P_SERR# Assertion Control | 54h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Reserved | Secondary Decode Enable | 58h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Secondary IDSEL | 5Ch
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 5Ch
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 68h:CBh
** ----------------------------------------------------------------------------------------------------------
**************************************************************************
**==============================================================================
** 0x42-0x41: Secondary Arbiter Control/Status Register - SACSR
** Bit Default Description
** 15:12 1111b Grant Time-out Violator: This field indicates the agent that violated the Grant Time-out rule
** (PCI=16 clocks,PCI-X=6 clocks).
** Note that this field is only meaningful when:
** # Bit[11] of this register is set to 1b,
** indicating that a Grant Time-out violation had occurred.
** # bridge internal arbiter is enabled.
** Bits[15:12] Violating Agent (REQ#/GNT# pair number)
** 0000b REQ#/GNT#[0]
** 0001b REQ#/GNT#[1]
** 0010b REQ#/GNT#[2]
** 0011b REQ#/GNT#[3]
** 1111b Default Value (no violation detected)
** When bit[11] is cleared by software, this field reverts back to its default value.
** All other values are Reserved
** 11 0b Grant Time-out Occurred: When set to 1b,
** this indicates that a Grant Time-out error had occurred involving one of the secondary bus agents.
** Software clears this bit by writing a 1b to it.
** 10 0b Bus Parking Control: 0=During bus idle, bridge parks the bus on the last master to use the bus.
** 1=During bus idle, bridge parks the bus on itself.
** The bus grant is removed from the last master and internally asserted to bridge.
** 09:08 00b Reserved
** 07:00 0000 0000b Secondary Bus Arbiter Priority Configuration: The bridge secondary arbiter provides two rings of arbitration priority.
** Each bit of this field assigns its corresponding secondary
** bus master to either the high priority arbiter ring (1b)
** or to the low priority arbiter ring (0b).
** Bits [3:0] correspond to request inputs S_REQ#[3:0], respectively.
** Bit [6] corresponds to the bridge internal secondary bus request
** while Bit [7] corresponds to the SATU secondary bus request.
** Bits [5:4] are unused.
** 0b=Indicates that the master belongs to the low priority group.
** 1b=Indicates that the master belongs to the high priority group
**=================================================================================
** 0x43: Bridge Control Register 0 - BCR0
** Bit Default Description
** 07 0b Fully Dynamic Queue Mode: 0=The number of Posted write transactions is limited to eight
** and the Posted Write data is limited to 4KB.
** 1=Operation in fully dynamic queue mode. The bridge enqueues up to
** 14 Posted Memory Write transactions and 8KB of posted write data.
** 06:03 0H Reserved.
** 02 0b Upstream Prefetch Disable: This bit disables bridge ability
** to perform upstream prefetch operations for Memory
** Read requests received on its secondary interface.
** This bit also controls the bridge's ability to generate advanced read commands
** when forwarding a Memory Read Block transaction request upstream from a PCI-X bus
** to a Conventional PCI bus.
** 0b=bridge treats all upstream Memory Read requests as though they target prefetchable memory.
** The use of Memory Read Line and Memory Read
** Multiple is enabled when forwarding a PCI-X Memory Read Block request
** to an upstream bus operating in Conventional PCI mode.
** 1b=bridge treats upstream PCI Memory Read requests as though
** they target non-prefetchable memory and forwards upstream PCI-X Memory
** Read Block commands as Memory Read
** when the primary bus is operating
** in Conventional PCI mode.
** NOTE: This bit does not affect bridge ability to perform read prefetching
** when the received command is Memory Read Line or Memory Read Multiple.
**=================================================================================
** 0x45-0x44: Bridge Control Register 1 - BCR1 (Sheet 2 of 2)
** Bit Default Description
** 15:08 0000000b Reserved
** 07:06 00b Alias Command Mapping: This two bit field determines how bridge handles PCI-X Ħ§AliasĦ¨ commands,
** specifically the Alias to Memory Read Block and Alias to Memory Write Block commands.
** The three options for handling these alias commands are to either pass it as is,
** re-map to the actual block memory read/write command encoding, or ignore
** the transaction forcing a Master Abort to occur on the Origination Bus.
** Bit (7:6) Handling of command
** 0 0 Re-map to Memory Read/Write Block before forwarding
** 0 1 Enqueue and forward the alias command code unaltered
** 1 0 Ignore the transaction, forcing Master Abort
** 1 1 Reserved
** 05 1b Watchdog Timers Disable: Disables or enables all 2 24 Watchdog Timers in both directions.
** The watchdog timers are used to detect prohibitively long latencies in the system.
** The watchdog timer expires when any Posted Memory Write (PMW), Delayed Request,
** or Split Requests (PCI-X mode) is not completed within 2 24 events
** (Ħ§eventsĦ¨ are defined as PCI Clocks when operating in PCI-X mode,
** and as the number of times being retried when operating in Conventional PCI mode)
** 0b=All 2 24 watchdog timers are enabled.
** 1b=All 2 24 watchdog timers are disabled and there is no limits to
** the number of attempts bridge makes when initiating a PMW,
** transacting a Delayed Transaction, or how long it waits for
** a split completion corresponding to one of its requests.
** 04 0b GRANT# time-out disable: This bit enables/disables the GNT# time-out mechanism.
** Grant time-out is 16 clocks for conventional PCI, and 6 clocks for PCI-X.
** 0b=The Secondary bus arbiter times out an agent
** that does not assert FRAME# within 16/6 clocks of receiving its grant,
** once the bus has gone idle.
** The time-out counter begins as soon as the bus goes idle with the new GNT# asserted.
** An infringing agent does not receive a subsequent GNT#
** until it de-asserts its REQ# for at least one clock cycle.
** 1b=GNT# time-out mechanism is disabled.
** 03 00b Reserved.
** 02 0b Secondary Discard Timer Disable: This bit enables/disables bridge secondary delayed transaction discard mechanism.
** The time out mechanism is used to ensure that initiators
** of delayed transactions return for their delayed completion data/status
** within a reasonable amount of time after it is available from bridge.
** 0b=The secondary master time-out counter is enabled
** and uses the value specified by the Secondary Discard Timer bit
** (see Bridge Control Register).
** 1b=The secondary master time-out counter is disabled.
** The bridge waits indefinitely for a secondary bus master
** to repeat a delayed transaction.
** 01 0b Primary Discard Timer Disable: This bit enables/disables bridge primary delayed transaction discard mechanism.
** The time out mechanism is used to ensure that initiators
** of delayed transactions return for their delayed completion data/status
** within a reasonable amount of time after it is available from bridge.
** 0b=The primary master time-out counter is enabled and uses the value specified
** by the Primary Discard Timer bit (see Bridge Control Register).
** 1b=The secondary master time-out counter is disabled.
** The bridge waits indefinitely for a secondary bus master
** to repeat a delayed transaction.
** 00 0b Reserved
**=================================================================================
** 0x47-0x46: Bridge Control Register 2 - BCR2
** Bit Default Description
** 15:07 0000b Reserved.
** 06 0b Global Clock Out Disable (External Secondary Bus Clock Source Enable):
** This bit disables all of the secondary PCI clock outputs including
** the feedback clock S_CLKOUT.
** This means that the user is required to provide an S_CLKIN input source.
** 05:04 11 (66 MHz) Preserved.
** 01 (100 MHz)
** 00 (133 MHz)
** 03:00 Fh (100 MHz & 66 MHz)
** 7h (133 MHz)
** This 4 bit field provides individual enable/disable mask bits for each of bridge
** secondary PCI clock outputs. Some, or all secondary clock outputs (S_CLKO[3:0])
** default to being enabled following the rising edge of P_RST#, depending on the
** frequency of the secondary bus clock:
** ĦE Designs with 100 MHz (or lower) Secondary PCI clock power up with
** all four S_CLKOs enabled by default. (SCLKO[3:0])ĦP
** ĦE Designs with 133 MHz Secondary PCI clock power up
** with the lower order 3 S_CLKOs enabled by default.
** (S_CLKO[2:0]) Only those SCLKs that power up enabled by can be connected
** to downstream device clock inputs.
**=================================================================================
** 0x49-0x48: Bridge Status Register - BSR
** Bit Default Description
** 15 0b Upstream Delayed Transaction Discard Timer Expired: This bit is set to a 1b and P_SERR#
** is conditionally asserted when the secondary discard timer expires.
** 14 0b Upstream Delayed/Split Read Watchdog Timer Expired:
** Conventional PCI Mode: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards an upstream delayed read ** ** transaction request after 2 24 retries following the initial retry.
** PCI-X Mode: This bit is set to a 1b and P_SERR# is conditionally asserted
** when bridge discards an upstream split read request
** after waiting in excess of 2 24 clocks for the corresponding
** Split Completion to arrive.
** 13 0b Upstream Delayed/Split Write Watchdog Timer Expired:
** Conventional PCI Mode: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards an upstream delayed write ** ** transaction request after 2 24 retries following the initial retry.
** PCI-X Mode: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards an upstream split write request ** after waiting in excess of 2 24 clocks for the corresponding
** Split Completion to arrive.
** 12 0b Master Abort during Upstream Posted Write: This bit is set to a 1b and P_SERR#
** is conditionally asserted when a Master Abort occurs as a result of an attempt,
** by bridge, to retire a PMW upstream.
** 11 0b Target Abort during Upstream Posted Write: This bit is set to a 1b and P_SERR#
** is conditionally asserted when a Target Abort occurs as a result of an attempt,
** by bridge, to retire a PMW upstream.
** 10 0b Upstream Posted Write Data Discarded: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards an upstream PMW transaction
** after receiving 2 24 target retries from the primary bus target
** 09 0b Upstream Posted Write Data Parity Error: This bit is set to a 1b and P_SERR#
** is conditionally asserted when a data parity error is detected by bridge
** while attempting to retire a PMW upstream
** 08 0b Secondary Bus Address Parity Error: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge detects an address parity error on
** the secondary bus.
** 07 0b Downstream Delayed Transaction Discard Timer Expired: This bit is set to a 1b and P_SERR#
** is conditionally asserted when the primary bus discard timer expires.
** 06 0b Downstream Delayed/Split Read Watchdog Timer Expired:
** Conventional PCI Mode: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards a downstream delayed read ** ** transaction request after receiving 2 24 target retries
** from the secondary bus target.
** PCI-X Mode: This bit is set to a 1b and P_SERR# is conditionally asserted
** when bridge discards a downstream split read request
** after waiting in excess of 2 24 clocks for the corresponding
** Split Completion to arrive.
** 05 0b Downstream Delayed Write/Split Watchdog Timer Expired:
** Conventional PCI Mode: This bit is set to a 1b and P_SERR# is conditionally asserted
** when bridge discards a downstream delayed write transaction request
** after receiving 2 24 target retries from the secondary bus target.
** PCI-X Mode: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards a downstream
** split write request after waiting in excess of 2 24 clocks
** for the corresponding Split Completion to arrive.
** 04 0b Master Abort during Downstream Posted Write: This bit is set to a 1b and P_SERR#
** is conditionally asserted when a Master Abort occurs as a result of an attempt,
** by bridge, to retire a PMW downstream.
** 03 0b Target Abort during Downstream Posted Write: This bit is set to a 1b and P_SERR# is conditionally asserted
** when a Target Abort occurs as a result of an attempt, by bridge,
** to retire a PMW downstream.
** 02 0b Downstream Posted Write Data Discarded: This bit is set to a 1b and P_SERR#
** is conditionally asserted when bridge discards a downstream PMW transaction
** after receiving 2 24 target retries from the secondary bus target
** 01 0b Downstream Posted Write Data Parity Error: This bit is set to a 1b and P_SERR#
** is conditionally asserted when a data parity error is detected by bridge
** while attempting to retire a PMW downstream.
** 00 0b Primary Bus Address Parity Error: This bit is set to a 1b and P_SERR# is conditionally asserted
** when bridge detects an address parity error on the primary bus.
**==================================================================================
** 0x51-0x50: Bridge Multi-Transaction Timer Register - BMTTR
** Bit Default Description
** 15:13 000b Reserved
** 12:10 000b GRANT# Duration: This field specifies the count (PCI clocks)
** that a secondary bus master has its grant maintained in order to enable
** multiple transactions to execute within the same arbitration cycle.
** Bit[02:00] GNT# Extended Duration
** 000 MTT Disabled (Default=no GNT# extension)
** 001 16 clocks
** 010 32 clocks
** 011 64 clocks
** 100 128 clocks
** 101 256 clocks
** 110 Invalid (treated as 000)
** 111 Invalid (treated as 000)
** 09:08 00b Reserved
** 07:00 FFh MTT Mask: This field enables/disables MTT usage for each REQ#/GNT#
** pair supported by bridge secondary arbiter.
** Bit(7) corresponds to SATU internal REQ#/GNT# pair,
** bit(6) corresponds to bridge internal REQ#/GNT# pair,
** bit(5) corresponds to REQ#/GNT#(5) pair, etc.
** When a given bit is set to 1b, its corresponding REQ#/GNT#
** pair is enabled for MTT functionality as determined by bits(12:10) of this register.
** When a given bit is cleared to 0b, its corresponding REQ#/GNT# pair is disabled from using the MTT.
**==================================================================================
** 0x53-0x52: Read Prefetch Policy Register - RPPR
** Bit Default Description
** 15:13 000b ReRead_Primary Bus: 3-bit field indicating the multiplication factor
** to be used in calculating the number of bytes to prefetch from the secondary bus interface on ** subsequent PreFetch operations given that the read demands were not satisfied
** using the FirstRead parameter.
** The default value of 000b correlates to: Command Type Hardwired pre-fetch amount Memory Read 4 DWORDs
** Memory Read Line 1 cache lines Memory Read Multiple 2 cache lines
** 12:10 000b FirstRead_Primary Bus: 3-bit field indicating the multiplication factor to be used in calculating
** the number of bytes to prefetch from the secondary bus interface
** on the initial PreFetch operation.
** The default value of 000b correlates to: Command Type Hardwired pre-fetch amount Memory Read 4 DWORDs
** Memory Read Line 1 cache line Memory Read Multiple 2 cache lines
** 09:07 010b ReRead_Secondary Bus: 3-bit field indicating the multiplication factor to be used
** in calculating the number of bytes to prefetch from the primary
** bus interface on subsequent PreFetch operations given
** that the read demands were not satisfied using
** the FirstRead parameter.
** The default value of 010b correlates to: Command Type Hardwired pre-fetch a
** mount Memory Read 3 cache lines Memory Read Line 3 cache lines
** Memory Read Multiple 6 cache lines
** 06:04 000b FirstRead_Secondary Bus: 3-bit field indicating the multiplication factor to be used
** in calculating the number of bytes to prefetch from
** the primary bus interface on the initial PreFetch operation.
** The default value of 000b correlates to: Command Type Hardwired pre-fetch amount
** Memory Read 4 DWORDs Memory Read Line 1 cache line Memory Read Multiple 2 cache lines
** 03:00 1111b Staged Prefetch Enable: This field enables/disables the FirstRead/ReRead pre-fetch
** algorithm for the secondary and the primary bus interfaces.
** Bit(3) is a ganged enable bit for REQ#/GNT#[7:3], and bits(2:0) provide individual
** enable bits for REQ#/GNT#[2:0].
** (bit(2) is the enable bit for REQ#/GNT#[2], etc...)
** 1b: enables the staged pre-fetch feature
** 0b: disables staged pre-fetch,
** and hardwires read pre-fetch policy to the following for
** Memory Read,
** Memory Read Line,
** and Memory Read Multiple commands:
** Command Type Hardwired Pre-Fetch Amount...
** Memory Read 4 DWORDs
** Memory Read Line 1 cache line
** Memory Read Multiple 2 cache lines
** NOTE: When the starting address is not cache line aligned, bridge pre-fetches Memory Read line commands
** only to the next higher cache line boundary.For non-cache line aligned Memory Read
** Multiple commands bridge pre-fetches only to the second cache line boundary encountered.
**==================================================================================
** 0x55-0x54: P_SERR# Assertion Control - SERR_CTL
** Bit Default Description
** 15 0b Upstream Delayed Transaction Discard Timer Expired: Dictates the bridge behavior
** in response to its discarding of a delayed transaction that was initiated from the primary bus.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 14 0b Upstream Delayed/Split Read Watchdog Timer Expired: Dictates bridge behavior following expiration of the subject watchdog timer.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 13 0b Upstream Delayed/Split Write Watchdog Timer Expired: Dictates bridge behavior following expiration of the subject watchdog timer.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 12 0b Master Abort during Upstream Posted Write: Dictates bridge behavior following
** its having detected a Master Abort while attempting to retire one of its PMWs upstream.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 11 0b Target Abort during Upstream Posted Write: Dictates bridge behavior following
** its having been terminated with Target Abort while attempting to retire one of its PMWs upstream.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 10 0b Upstream Posted Write Data Discarded: Dictates bridge behavior in the event that
** it discards an upstream posted write transaction.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 09 0b Upstream Posted Write Data Parity Error: Dictates bridge behavior
** when a data parity error is detected while attempting to retire on of its PMWs upstream.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 08 0b Secondary Bus Address Parity Error: This bit dictates bridge behavior
** when it detects an address parity error on the secondary bus.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 07 0b Downstream Delayed Transaction Discard Timer Expired: Dictates bridge behavior in response to
** its discarding of a delayed transaction that was initiated on the secondary bus.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 06 0b Downstream Delayed/Split Read Watchdog Timer Expired: Dictates bridge behavior following expiration of the subject watchdog timer.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 05 0b Downstream Delayed/Split Write Watchdog Timer Expired: Dictates bridge behavior following expiration of the subject watchdog timer.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 04 0b Master Abort during Downstream Posted Write: Dictates bridge behavior following
** its having detected a Master Abort while attempting to retire one of its PMWs downstream.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 03 0b Target Abort during Downstream Posted Write: Dictates bridge behavior following
** its having been terminated with Target Abort while attempting to retire one of its PMWs downstream.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 02 0b Downstream Posted Write Data Discarded: Dictates bridge behavior in the event
** that it discards a downstream posted write transaction.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 01 0b Downstream Posted Write Data Parity Error: Dictates bridge behavior
** when a data parity error is detected while attempting to retire on of its PMWs downstream.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
** 00 0b Primary Bus Address Parity Error: This bit dictates bridge behavior
** when it detects an address parity error on the primary bus.
** 0b=bridge asserts P_SERR#.
** 1b=bridge does not assert P_SERR#
**===============================================================================
** 0x56: Pre-Boot Status Register - PBSR
** Bit Default Description
** 07 1 Reserved
** 06 - Reserved - value indeterminate
** 05:02 0 Reserved
** 01 Varies with External State of S_133EN at PCI Bus Reset Secondary Bus Max Frequency Setting:
** This bit reflect captured S_133EN strap,
** indicating the maximum secondary bus clock frequency when in PCI-X mode.
** Max Allowable Secondary Bus Frequency
** ** S_133EN PCI-X Mode
** ** 0 100 MHz
** ** 1 133 MH
** 00 0b Reserved
**===============================================================================
** 0x59-0x58: Secondary Decode Enable Register - SDER
** Bit Default Description
** 15:03 FFF1h Preserved.
** 02 Varies with External State of PRIVMEM at PCI Bus Reset Private Memory Space Enable - when set,
** bridge overrides its secondary inverse decode logic and not
** forward upstream any secondary bus initiated DAC Memory transactions with AD(63)=1b.
** This creates a private memory space on the Secondary PCI bus
** that allows peer-to-peer transactions.
** 01:00 10 2 Preserved.
**===============================================================================
** 0x5D-0x5C: Secondary IDSEL Select Register - SISR
** Bit Default Description
** 15:10 000000 2 Reserved.
** 09 Varies with External State of PRIVDEV at PCI Bus Reset AD25- IDSEL Disable - When this bit is set,
** AD25 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD25 is asserted when Primary addresses AD[15:11]=01001 2 during a Type 1 to Type 0 conversion.
** 08 Varies with External State of PRIVDEV at PCI Bus Reset AD24- IDSEL Disable - When this bit is set,
** AD24 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD24 is asserted when Primary addresses AD[15:11]=01000 2 during a Type 1 to Type 0 conversion.
** 07 Varies with External State of PRIVDEV at PCI Bus Reset AD23- IDSEL Disable - When this bit is set,
** AD23 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD23 is asserted when Primary addresses AD[15:11]=00111 2 during a Type 1 to Type 0 conversion.
** 06 Varies with External State of PRIVDEV at PCI Bus Reset AD22- IDSEL Disable - When this bit is set,
** AD22 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD22 is asserted when Primary addresses AD[15:11]=00110 2 during a Type 1 to Type 0 conversion.
** 05 Varies with External State of PRIVDEV at PCI Bus Reset AD21- IDSEL Disable - When this bit is set,
** AD21 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD21 is asserted when Primary addresses AD[15:11]=00101 2 during a Type 1 to Type 0 conversion.
** 04 Varies with External State of PRIVDEV at PCI Bus Reset AD20- IDSEL Disable - When this bit is set,
** AD20 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD20 is asserted when Primary addresses AD[15:11]=00100 2 during a Type 1 to Type 0 conversion.
** 03 Varies with External State of PRIVDEV at PCI Bus Reset AD19- IDSEL Disable - When this bit is set,
** AD19 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD19 is asserted when Primary addresses AD[15:11]=00011 2 during a Type 1 to Type 0 conversion.
** 02 Varies with External State of PRIVDEV at PCI Bus Reset AD18- IDSEL Disable - When this bit is set,
** AD18 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD18 is asserted when Primary addresses AD[15:11]=00010 2 during a Type 1 to Type 0 conversion.
** 01 Varies with External State of PRIVDEV at PCI Bus Reset AD17- IDSEL Disable - When this bit is set,
** AD17 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD17 is asserted when Primary addresses AD[15:11]=00001 2 during a Type 1 to Type 0 conversion.
** 00 Varies with External State of PRIVDEV at PCI Bus Reset AD16- IDSEL Disable - When this bit is set,
** AD16 is deasserted for any possible Type 1 to Type 0 conversion.
** When this bit is clear,
** AD16 is asserted when Primary addresses AD[15:11]=00000 2 during a Type 1 to Type 0 conversion.
**************************************************************************
*/
/*
**************************************************************************
** Reserved A8-CBh
**************************************************************************
*/
/*
**************************************************************************
** PCI Extended Enhanced Capabilities List CC-FFh
**************************************************************************
** ----------------------------------------------------------------------------------------------------------
** | Byte 3 | Byte 2 | Byte 1 | Byte 0 | Configu-ration Byte Offset
** ----------------------------------------------------------------------------------------------------------
** | Power Management Capabilities | Next Item Ptr | Capability ID | DCh
** ----------------------------------------------------------------------------------------------------------
** | PM Data | PPB Support | Extensions Power Management CSR | E0h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Reserved | Reserved | E4h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | E8h
** ----------------------------------------------------------------------------------------------------------
** | Reserved | Reserved | Reserved | Reserved | ECh
** ----------------------------------------------------------------------------------------------------------
** | PCI-X Secondary Status | Next Item Ptr | Capability ID | F0h
** ----------------------------------------------------------------------------------------------------------
** | PCI-X Bridge Status | F4h
** ----------------------------------------------------------------------------------------------------------
** | PCI-X Upstream Split Transaction Control | F8h
** ----------------------------------------------------------------------------------------------------------
** | PCI-X Downstream Split Transaction Control | FCh
** ----------------------------------------------------------------------------------------------------------
**===============================================================================
** 0xDC: Power Management Capabilities Identifier - PM_CAPID
** Bit Default Description
** 07:00 01h Identifier (ID): PCI SIG assigned ID for PCI-PM register block
**===============================================================================
** 0xDD: Next Item Pointer - PM_NXTP
** Bit Default Description
** 07:00 F0H Next Capabilities Pointer (PTR): The register defaults to F0H pointing to the PCI-X Extended Capability Header.
**===============================================================================
** 0xDF-0xDE: Power Management Capabilities Register - PMCR
** Bit Default Description
** 15:11 00h PME Supported (PME): PME# cannot be asserted by bridge.
** 10 0h State D2 Supported (D2): Indicates no support for state D2. No power management action in this state.
** 09 1h State D1 Supported (D1): Indicates support for state D1. No power management action in this state.
** 08:06 0h Auxiliary Current (AUXC): This 3 bit field reports the 3.3Vaux auxiliary current requirements for the PCI function.
** This returns 000b as PME# wake-up for bridge is not implemented.
** 05 0 Special Initialization Required (SINT): Special initialization is not required for bridge.
** 04:03 00 Reserved
** 02:00 010 Version (VS): Indicates that this supports PCI Bus Power Management Interface Specification, Revision 1.1.
**===============================================================================
** 0xE1-0xE0: Power Management Control / Status - Register - PMCSR
** Bit Default Description
** 15:09 00h Reserved
** 08 0b PME_Enable: This bit, when set to 1b enables bridge to assert PME#.
** Note that bridge never has occasion to assert PME# and implements this dummy R/W bit only for the purpose of working around an OS PCI-PM bug.
** 07:02 00h Reserved
** 01:00 00 Power State (PSTATE): This 2-bit field is used both to determine the current power state of
** a function and to set the Function into a new power state.
** 00 - D0 state
** 01 - D1 state
** 10 - D2 state
** 11 - D3 hot state
**===============================================================================
** 0xE2: Power Management Control / Status PCI to PCI Bridge Support - PMCSR_BSE
** Bit Default Description
** 07 0 Bus Power/Clock Control Enable (BPCC_En): Indicates that the bus power/clock control policies have been disabled.
** 06 0 B2/B3 support for D3 Hot (B2_B3#): The state of this bit determines the action that
** is to occur as a direct result of programming the function to D3 hot.
** This bit is only meaningful when bit 7 (BPCC_En) is a Ħ§1Ħ¨.
** 05:00 00h Reserved
**===============================================================================
** 0xE3: Power Management Data Register - PMDR
** Bit Default Description
** 07:00 00h Reserved
**===============================================================================
** 0xF0: PCI-X Capabilities Identifier - PX_CAPID
** Bit Default Description
** 07:00 07h Identifier (ID): Indicates this is a PCI-X capabilities list.
**===============================================================================
** 0xF1: Next Item Pointer - PX_NXTP
** Bit Default Description
** 07:00 00h Next Item Pointer: Points to the next capability in the linked list The power on default value of this
** register is 00h indicating that this is the last entry in the linked list of capabilities.
**===============================================================================
** 0xF3-0xF2: PCI-X Secondary Status - PX_SSTS
** Bit Default Description
** 15:09 00h Reserved
** 08:06 Xxx Secondary Clock Frequency (SCF): This field is set with the frequency of the secondary bus.
** The values are:
** ** BitsMax FrequencyClock Period
** ** 000PCI ModeN/A
** ** 00166 15
** ** 01010010
** ** 0111337.5
** ** 1xxreservedreserved
** ** The default value for this register is the operating frequency of the secondary bus
** 05 0b Split Request Delayed. (SRD): This bit is supposed to be set by a bridge when it cannot forward a transaction on the
** secondary bus to the primary bus because there is not enough room within the limit
** specified in the Split Transaction Commitment Limit field in the Downstream Split
** Transaction Control register. The bridge does not set this bit.
** 04 0b Split Completion Overrun (SCO): This bit is supposed to be set when a bridge terminates a Split Completion on the ** ** secondary bus with retry or Disconnect at next ADB because its buffers are full.
** The bridge does not set this bit.
** 03 0b Unexpected Split Completion (USC): This bit is set when an unexpected split completion with a requester ID
** equal to bridge secondary bus number, device number 00h,
** and function number 0 is received on the secondary interface.
** This bit is cleared by software writing a '1'.
** 02 0b Split Completion Discarded (SCD): This bit is set
** when bridge discards a split completion moving toward the secondary bus
** because the requester would not accept it. This bit cleared by software writing a '1'.
** 01 1b 133 MHz Capable: Indicates that bridge is capable of running its secondary bus at 133 MHz
** 00 1b 64-bit Device (D64): Indicates the width of the secondary bus as 64-bits.
**===============================================================================
** 0xF7-0xF6-0xf5-0xF4: PCI-X Bridge Status - PX_BSTS
** Bit Default Description
** 31:22 0 Reserved
** 21 0 Split Request Delayed (SRD): This bit does not be set by bridge.
** 20 0 Split Completion Overrun (SCO): This bit does not be set by bridge
** because bridge throttles traffic on the completion side.
** 19 0 Unexpected Split Completion (USC): The bridge sets this bit to 1b
** when it encounters a corrupted Split Completion, possibly with an ** ** inconsistent remaining byte count.Software clears
** this bit by writing a 1b to it.
** 18 0 Split Completion Discarded (SCD): The bridge sets this bit to 1b
** when it has discarded a Split Completion.Software clears this bit by ** ** writing a 1b to it.
** 17 1 133 MHz Capable: This bit indicates that the bridge primary interface is ** capable of 133 MHz operation in PCI-X mode.
** 0=The maximum operating frequency is 66 MHz.
** 1=The maximum operating frequency is 133 MHz.
** 16 Varies with the external state of P_32BITPCI# at PCI Bus Reset 64-bit Device (D64): Indicates bus width of the Primary PCI bus interface.
** 0=Primary Interface is connected as a 32-bit PCI bus.
** 1=Primary Interface is connected as a 64-bit PCI bus.
** 15:08 00h Bus Number (BNUM): This field is simply an alias to the PBN field
** of the BNUM register at offset 18h.
** Apparently it was deemed necessary reflect it here for diagnostic purposes.
** 07:03 1fh Device Number (DNUM): Indicates which IDSEL bridge consumes.
** May be updated whenever a PCI-X
** configuration write cycle that targets bridge scores a hit.
** 02:00 0h Function Number (FNUM): The bridge Function #
**===============================================================================
** 0xFB-0xFA-0xF9-0xF8: PCI-X Upstream Split Transaction Control - PX_USTC
** Bit Default Description
** 31:16 003Eh Split Transaction Limit (STL): This register indicates the size of the commitment limit in units of ADQs.
** Software is permitted to program this register to any value greater than or equal to
** the contents of the Split Transaction Capacity register. A value less than the contents
** of the Split Transaction Capacity register causes unspecified results.
** A value of 003Eh or greater enables the bridge to forward all Split Requests of any
** size regardless of the amount of buffer space available.
** 15:00 003Eh Split Transaction Capacity (STC): This read-only field indicates the size of the buffer (number of ADQs) for storing
** split completions. This register controls behavior of the bridge buffers for forwarding
** Split Transactions from a primary bus requester to a secondary bus completer.
** The default value of 003Eh indicates there is available buffer space for 62 ADQs (7936 bytes).
**===============================================================================
** 0xFF-0xFE-0xFD-0xFC: PCI-X Downstream Split Transaction Control - PX_DSTC
** Bit Default Description
** 31:16 003Eh Split Transaction Limit (STL): This register indicates the size of the commitment limit in units of ADQs.
** Software is permitted to program this register to any value greater than or equal to
** the contents of the Split Transaction Capacity register. A value less than the contents
** of the Split Transaction Capacity register causes unspecified results.
** A value of 003Eh or greater enables the bridge to forward all Split Requests of any
** size regardless of the amount of buffer space available.
** 15:00 003Eh Split Transaction Capacity (STC): This read-only field indicates the size of the buffer (number of ADQs) for storing
** split completions. This register controls behavior of the bridge buffers for forwarding
** Split Transactions from a primary bus requester to a secondary bus completer.
** The default value of 003Eh indicates there is available buffer space for 62 ADQs
** (7936 bytes).
**************************************************************************
*/
/*
*************************************************************************************************************************************
** 80331 Address Translation Unit Register Definitions
** ATU Interface Configuration Header Format
** The ATU is programmed via a [Type 0] configuration command on the PCI interface.
*************************************************************************************************************************************
** | Byte 3 | Byte 2 | Byte 1 | Byte 0 | Configuration Byte Offset
**===================================================================================================================================
** | ATU Device ID | Vendor ID | 00h
** ----------------------------------------------------------------------------------------------------------
** | Status | Command | 04H
** ----------------------------------------------------------------------------------------------------------
** | ATU Class Code | Revision ID | 08H
** ----------------------------------------------------------------------------------------------------------
** | ATUBISTR | Header Type | Latency Timer | Cacheline Size | 0CH
** ----------------------------------------------------------------------------------------------------------
** | Inbound ATU Base Address 0 | 10H
** ----------------------------------------------------------------------------------------------------------
** | Inbound ATU Upper Base Address 0 | 14H
** ----------------------------------------------------------------------------------------------------------
** | Inbound ATU Base Address 1 | 18H
** ----------------------------------------------------------------------------------------------------------
** | Inbound ATU Upper Base Address 1 | 1CH
** ----------------------------------------------------------------------------------------------------------
** | Inbound ATU Base Address 2 | 20H
** ----------------------------------------------------------------------------------------------------------
** | Inbound ATU Upper Base Address 2 | 24H
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 28H
** ----------------------------------------------------------------------------------------------------------
** | ATU Subsystem ID | ATU Subsystem Vendor ID | 2CH
** ----------------------------------------------------------------------------------------------------------
** | Expansion ROM Base Address | 30H
** ----------------------------------------------------------------------------------------------------------
** | Reserved Capabilities Pointer | 34H
** ----------------------------------------------------------------------------------------------------------
** | Reserved | 38H
** ----------------------------------------------------------------------------------------------------------
** | Maximum Latency | Minimum Grant | Interrupt Pin | Interrupt Line | 3CH
** ----------------------------------------------------------------------------------------------------------
*********************************************************************************************************************
*/
/*
***********************************************************************************
** ATU Vendor ID Register - ATUVID
** -----------------------------------------------------------------
** Bit Default Description
** 15:00 8086H (0x17D3) ATU Vendor ID - This is a 16-bit value assigned to Intel.
** This register, combined with the DID, uniquely identify the PCI device.
** Access type is Read/Write to allow the 80331 to configure the register as a different vendor ID
** to simulate the interface of a standard mechanism currently used by existing application software.
***********************************************************************************
*/
#define ARCMSR_ATU_VENDOR_ID_REG 0x00 /*word*/
/*
***********************************************************************************
** ATU Device ID Register - ATUDID
** -----------------------------------------------------------------
** Bit Default Description
** 15:00 0336H (0x1110) ATU Device ID - This is a 16-bit value assigned to the ATU.
** This ID, combined with the VID, uniquely identify any PCI device.
***********************************************************************************
*/
#define ARCMSR_ATU_DEVICE_ID_REG 0x02 /*word*/
/*
***********************************************************************************
** ATU Command Register - ATUCMD
** -----------------------------------------------------------------
** Bit Default Description
** 15:11 000000 2 Reserved
** 10 0 Interrupt Disable - This bit disables 80331 from asserting the ATU interrupt signal.
** 0=enables the assertion of interrupt signal.
** 1=disables the assertion of its interrupt signal.
** 09 0 2 Fast Back to Back Enable - When cleared,
** the ATU interface is not allowed to generate fast back-to-back cycles on its bus.
** Ignored when operating in the PCI-X mode.
** 08 0 2 SERR# Enable - When cleared, the ATU interface is not allowed to assert SERR# on the PCI interface.
** 07 1 2 Address/Data Stepping Control - Address stepping is implemented for configuration transactions. The
** ATU inserts 2 clock cycles of address stepping for Conventional Mode and 4 clock cycles
** of address stepping for PCI-X mode.
** 06 0 2 Parity Error Response - When set, the ATU takes normal action when a parity error
** is detected. When cleared, parity checking is disabled.
** 05 0 2 VGA Palette Snoop Enable - The ATU interface does not support I/O writes and therefore,
** does not perform VGA palette snooping.
** 04 0 2 Memory Write and Invalidate Enable - When set, ATU may generate MWI commands.
** When clear, ATU use Memory Write commands instead of MWI. Ignored when operating in the PCI-X mode.
** 03 0 2 Special Cycle Enable - The ATU interface does not respond to special cycle commands in any way.
** Not implemented and a reserved bit field.
** 02 0 2 Bus Master Enable - The ATU interface can act as a master on the PCI bus.
** When cleared, disables the device from generating PCI accesses.
** When set, allows the device to behave as a PCI bus master.
** When operating in the PCI-X mode, ATU initiates a split completion transaction regardless
** of the state of this bit.
** 01 0 2 Memory Enable - Controls the ATU interfaceĦĤs response to PCI memory addresses.
** When cleared, the ATU interface does not respond to any memory access on the PCI bus.
** 00 0 2 I/O Space Enable - Controls the ATU interface response to I/O transactions.
** Not implemented and a reserved bit field.
***********************************************************************************
*/
#define ARCMSR_ATU_COMMAND_REG 0x04 /*word*/
/*
***********************************************************************************
** ATU Status Register - ATUSR (Sheet 1 of 2)
** -----------------------------------------------------------------
** Bit Default Description
** 15 0 2 Detected Parity Error - set when a parity error is detected in data received by the ATU on the PCI bus even
** when the ATUCMD registerĦĤs Parity Error Response bit is cleared. Set under the following conditions:
** ĦE Write Data Parity Error when the ATU is a target (inbound write).
** ĦE Read Data Parity Error when the ATU is a requester (outbound read).
** ĦE Any Address or Attribute (PCI-X Only) Parity Error on the Bus ** ** ** (including one generated by the ATU).
** 14 0 2 SERR# Asserted - set when SERR# is asserted on the PCI bus by the ATU.
** 13 0 2 Master Abort - set when a transaction initiated by the ATU PCI master interface, ends in a Master-Abort
** or when the ATU receives a Master Abort Split Completion Error Message in PCI-X mode.
** 12 0 2 Target Abort (master) - set when a transaction initiated by the ATU PCI master interface, ends in a target
** abort or when the ATU receives a Target Abort Split Completion Error Message in PCI-X mode.
** 11 0 2 Target Abort (target) - set when the ATU interface, acting as a target,
** terminates the transaction on the PCI bus with a target abort.
** 10:09 01 2 DEVSEL# Timing - These bits are read-only and define the slowest DEVSEL#
** timing for a target device in Conventional PCI Mode regardless of the operating mode
** (except configuration accesses).
** 00 2=Fast
** 01 2=Medium
** 10 2=Slow
** 11 2=Reserved
** The ATU interface uses Medium timing.
** 08 0 2 Master Parity Error - The ATU interface sets this bit under the following conditions:
** ĦE The ATU asserted PERR# itself or the ATU observed PERR# asserted.
** ĦE And the ATU acted as the requester
** for the operation in which the error occurred.
** ĦE And the ATUCMD registerĦĤs Parity Error Response bit is set
** ĦE Or (PCI-X Mode Only) the ATU received a Write Data Parity Error Message
** ĦE And the ATUCMD registerĦĤs Parity Error Response bit is set
** 07 1 2 (Conventional mode)
** 0 2 (PCI-X mode)
** Fast Back-to-Back - The ATU/Messaging Unit interface is capable of accepting fast back-to-back
** transactions in Conventional PCI mode when the transactions are not to the same target. Since fast
** back-to-back transactions do not exist in PCI-X mode, this bit is forced to 0 in the PCI-X mode.
** 06 0 2 UDF Supported - User Definable Features are not supported
** 05 1 2 66 MHz. Capable - 66 MHz operation is supported.
** 04 1 2 Capabilities - When set, this function implements extended capabilities.
** 03 0 Interrupt Status - reflects the state of the ATU interrupt
** when the Interrupt Disable bit in the command register is a 0.
** 0=ATU interrupt signal deasserted.
** 1=ATU interrupt signal asserted.
** NOTE: Setting the Interrupt Disable bit to a 1 has no effect on the state of this bit. Refer to
** Section 3.10.23, Ħ§ATU Interrupt Pin Register - ATUIPRĦ¨ on page 236 for details on the ATU
** interrupt signal.
** 02:00 00000 2 Reserved.
***********************************************************************************
*/
#define ARCMSR_ATU_STATUS_REG 0x06 /*word*/
/*
***********************************************************************************
** ATU Revision ID Register - ATURID
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 00H ATU Revision - identifies the 80331 revision number.
***********************************************************************************
*/
#define ARCMSR_ATU_REVISION_REG 0x08 /*byte*/
/*
***********************************************************************************
** ATU Class Code Register - ATUCCR
** -----------------------------------------------------------------
** Bit Default Description
** 23:16 05H Base Class - Memory Controller
** 15:08 80H Sub Class - Other Memory Controller
** 07:00 00H Programming Interface - None defined
***********************************************************************************
*/
#define ARCMSR_ATU_CLASS_CODE_REG 0x09 /*3bytes 0x0B,0x0A,0x09*/
/*
***********************************************************************************
** ATU Cacheline Size Register - ATUCLSR
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 00H ATU Cacheline Size - specifies the system cacheline size in DWORDs. Cacheline size is restricted to either 0, 8 or 16 DWORDs.
***********************************************************************************
*/
#define ARCMSR_ATU_CACHELINE_SIZE_REG 0x0C /*byte*/
/*
***********************************************************************************
** ATU Latency Timer Register - ATULT
** -----------------------------------------------------------------
** Bit Default Description
** 07:03 00000 2 (for Conventional mode)
** 01000 2 (for PCI-X mode)
** Programmable Latency Timer - This field varies the latency timer for the interface from 0 to 248 clocks.
** The default value is 0 clocks for Conventional PCI mode, and 64 clocks for PCI-X mode.
** 02:00 000 2 Latency Timer Granularity - These Bits are read only giving a programmable granularity of 8 clocks for the latency timer.
***********************************************************************************
*/
#define ARCMSR_ATU_LATENCY_TIMER_REG 0x0D /*byte*/
/*
***********************************************************************************
** ATU Header Type Register - ATUHTR
** -----------------------------------------------------------------
** Bit Default Description
** 07 0 2 Single Function/Multi-Function Device - Identifies the 80331 as a single-function PCI device.
** 06:00 000000 2 PCI Header Type - This bit field indicates the type of PCI header implemented. The ATU interface
** header conforms to PCI Local Bus Specification, Revision 2.3.
***********************************************************************************
*/
#define ARCMSR_ATU_HEADER_TYPE_REG 0x0E /*byte*/
/*
***********************************************************************************
** ATU BIST Register - ATUBISTR
**
** The ATU BIST Register controls the functions the Intel XScale core performs when BIST is
** initiated. This register is the interface between the host processor requesting BIST functions and
** the 80331 replying with the results from the software implementation of the BIST functionality.
** -----------------------------------------------------------------
** Bit Default Description
** 07 0 2 BIST Capable - This bit value is always equal to the ATUCR ATU BIST Interrupt Enable bit.
** 06 0 2 Start BIST - When the ATUCR BIST Interrupt Enable bit is set:
** Setting this bit generates an interrupt to the Intel XScale core to perform a software BIST function.
** The Intel XScale core clears this bit when the BIST software has completed with the BIST results
** found in ATUBISTR register bits [3:0].
** When the ATUCR BIST Interrupt Enable bit is clear:
** Setting this bit does not generate an interrupt to the Intel XScale core and no BIST functions is performed.
** The Intel XScale core does not clear this bit.
** 05:04 00 2 Reserved
** 03:00 0000 2 BIST Completion Code - when the ATUCR BIST Interrupt Enable bit is set and the ATUBISTR Start BIST bit is set (bit 6):
** The Intel XScale core places the results of the software BIST in these bits.
** A nonzero value indicates a device-specific error.
***********************************************************************************
*/
#define ARCMSR_ATU_BIST_REG 0x0F /*byte*/
/*
***************************************************************************************
** ATU Base Registers and Associated Limit Registers
***************************************************************************************
** Base Address Register Limit Register Description
** Inbound ATU Base Address Register 0 Inbound ATU Limit Register 0 Defines the inbound translation window 0 from the PCI bus.
** Inbound ATU Upper Base Address Register 0 N/A Together with ATU Base Address Register 0 defines the inbound ** translation window 0 from the PCI bus for DACs.
** Inbound ATU Base Address Register 1 Inbound ATU Limit Register 1 Defines inbound window 1 from the PCI bus.
** Inbound ATU Upper Base Address Register 1 N/A Together with ATU Base Address Register 1 defines inbound window ** 1 from the PCI bus for DACs.
** Inbound ATU Base Address Register 2 Inbound ATU Limit Register 2 Defines the inbound translation window 2 from the PCI bus.
** Inbound ATU Upper Base Address Register 2 N/A Together with ATU Base Address Register 2 defines the inbound ** ** translation window 2 from the PCI bus for DACs.
** Inbound ATU Base Address Register 3 Inbound ATU Limit Register 3 Defines the inbound translation window 3 from the PCI bus.
** Inbound ATU Upper Base Address Register 3 N/A Together with ATU Base Address Register 3 defines the inbound ** ** translation window 3 from the PCI bus for DACs.
** NOTE: This is a private BAR that resides outside of the standard PCI configuration header space (offsets 00H-3FH).
** Expansion ROM Base Address Register Expansion ROM Limit Register Defines the window of addresses used by a bus master for reading ** from an Expansion ROM.
**--------------------------------------------------------------------------------------
** ATU Inbound Window 1 is not a translate window.
** The ATU does not claim any PCI accesses that fall within this range.
** This window is used to allocate host memory for use by Private Devices.
** When enabled, the ATU interrupts the Intel XScale core when either the IABAR1 register or the IAUBAR1 register is written from the PCI bus.
***********************************************************************************
*/
/*
***********************************************************************************
** Inbound ATU Base Address Register 0 - IABAR0
**
** . The Inbound ATU Base Address Register 0 (IABAR0) together with the Inbound ATU Upper Base Address Register 0 (IAUBAR0)
** defines the block of memory addresses where the inbound translation window 0 begins.
** . The inbound ATU decodes and forwards the bus request to the 80331 internal bus with a translated address to map into 80331 local memory.
** . The IABAR0 and IAUBAR0 define the base address and describes the required memory block size.
** . Bits 31 through 12 of the IABAR0 is either read/write bits or read only with a value of 0
** depending on the value located within the IALR0.
** This configuration allows the IABAR0 to be programmed per PCI Local Bus Specification.
** The first 4 Kbytes of memory defined by the IABAR0, IAUBAR0 and the IALR0 is reserved for the Messaging Unit.
** The programmed value within the base address register must comply with the PCI programming requirements for address alignment.
** Warning:
** When IALR0 is cleared prior to host configuration:
** the user should also clear the Prefetchable Indicator and the Type Indicator.
** Assuming IALR0 is not cleared:
** a. Since non prefetchable memory windows can never be placed above the 4 Gbyte address boundary,
** when the Prefetchable Indicator is cleared prior to host configuration,
** the user should also set the Type Indicator for 32 bit addressability.
** b. For compliance to the PCI-X Addendum to the PCI Local Bus Specification,
** when the Prefetchable Indicator is set prior to host configuration, the user
** should also set the Type Indicator for 64 bit addressability.
** This is the default for IABAR0.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Translation Base Address 0 - These bits define the actual location
** the translation function is to respond to when addressed from the PCI bus.
** 11:04 00H Reserved.
** 03 1 2 Prefetchable Indicator - When set, defines the memory space as prefetchable.
** 02:01 10 2 Type Indicator - Defines the width of the addressability for this memory window:
** 00 - Memory Window is locatable anywhere in 32 bit address space
** 10 - Memory Window is locatable anywhere in 64 bit address space
** 00 0 2 Memory Space Indicator - This bit field describes memory or I/O space base address.
** The ATU does not occupy I/O space,
** thus this bit must be zero.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_BASE_ADDRESS0_REG 0x10 /*dword 0x13,0x12,0x11,0x10*/
#define ARCMSR_INBOUND_ATU_MEMORY_PREFETCHABLE 0x08
#define ARCMSR_INBOUND_ATU_MEMORY_WINDOW64 0x04
/*
***********************************************************************************
** Inbound ATU Upper Base Address Register 0 - IAUBAR0
**
** This register contains the upper base address when decoding PCI addresses beyond 4 GBytes.
** Together with the Translation Base Address this register defines the actual location the translation
** function is to respond to when addressed from the PCI bus for addresses > 4GBytes (for DACs).
** The programmed value within the base address register must comply with the PCI programming requirements for address alignment.
** Note:
** When the Type indicator of IABAR0 is set to indicate 32 bit addressability,
** the IAUBAR0 register attributes are read-only.
** -----------------------------------------------------------------
** Bit Default Description
** 31:0 00000H Translation Upper Base Address 0 - Together with the Translation Base Address 0 these bits define the
** actual location the translation function is to respond to when addressed from the PCI bus for addresses > 4GBytes.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_UPPER_BASE_ADDRESS0_REG 0x14 /*dword 0x17,0x16,0x15,0x14*/
/*
***********************************************************************************
** Inbound ATU Base Address Register 1 - IABAR1
**
** . The Inbound ATU Base Address Register (IABAR1) together with the Inbound ATU Upper Base Address Register 1 (IAUBAR1)
** defines the block of memory addresses where the inbound translation window 1 begins.
** . This window is used merely to allocate memory on the PCI bus and, the ATU does not process any PCI bus transactions to this memory range.
** . The programmed value within the base address register must comply with the PCI programming requirements for address alignment.
** . When enabled, the ATU interrupts the Intel XScale core when the IABAR1 register is written from the PCI bus.
** Warning:
** When a non-zero value is not written to IALR1 prior to host configuration,
** the user should not set either the Prefetchable Indicator or the Type Indicator for 64 bit addressability.
** This is the default for IABAR1.
** Assuming a non-zero value is written to IALR1,
** the user may set the Prefetchable Indicator
** or the Type Indicator:
** a. Since non prefetchable memory windows can never be placed above the 4 Gbyte address
** boundary, when the Prefetchable Indicator is not set prior to host configuration,
** the user should also leave the Type Indicator set for 32 bit addressability.
** This is the default for IABAR1.
** b. when the Prefetchable Indicator is set prior to host configuration,
** the user should also set the Type Indicator for 64 bit addressability.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Translation Base Address 1 - These bits define the actual location of window 1 on the PCI bus.
** 11:04 00H Reserved.
** 03 0 2 Prefetchable Indicator - When set, defines the memory space as prefetchable.
** 02:01 00 2 Type Indicator - Defines the width of the addressability for this memory window:
** 00 - Memory Window is locatable anywhere in 32 bit address space
** 10 - Memory Window is locatable anywhere in 64 bit address space
** 00 0 2 Memory Space Indicator - This bit field describes memory or I/O space base address.
** The ATU does not occupy I/O space,
** thus this bit must be zero.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_BASE_ADDRESS1_REG 0x18 /*dword 0x1B,0x1A,0x19,0x18*/
/*
***********************************************************************************
** Inbound ATU Upper Base Address Register 1 - IAUBAR1
**
** This register contains the upper base address when locating this window for PCI addresses beyond 4 GBytes.
** Together with the IABAR1 this register defines the actual location for this memory window for addresses > 4GBytes (for DACs).
** This window is used merely to allocate memory on the PCI bus and, the ATU does not process any PCI bus transactions to this memory range.
** The programmed value within the base address register must comply with the PCI programming
** requirements for address alignment.
** When enabled, the ATU interrupts the Intel XScale core when the IAUBAR1 register is written
** from the PCI bus.
** Note:
** When the Type indicator of IABAR1 is set to indicate 32 bit addressability,
** the IAUBAR1 register attributes are read-only.
** This is the default for IABAR1.
** -----------------------------------------------------------------
** Bit Default Description
** 31:0 00000H Translation Upper Base Address 1 - Together with the Translation Base Address 1
** these bits define the actual location for this memory window on the PCI bus for addresses > 4GBytes.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_UPPER_BASE_ADDRESS1_REG 0x1C /*dword 0x1F,0x1E,0x1D,0x1C*/
/*
***********************************************************************************
** Inbound ATU Base Address Register 2 - IABAR2
**
** . The Inbound ATU Base Address Register 2 (IABAR2) together with the Inbound ATU Upper Base Address Register 2 (IAUBAR2)
** defines the block of memory addresses where the inbound translation window 2 begins.
** . The inbound ATU decodes and forwards the bus request to the 80331 internal bus with a translated address to map into 80331 local memory.
** . The IABAR2 and IAUBAR2 define the base address and describes the required memory block size
** . Bits 31 through 12 of the IABAR2 is either read/write bits or read only with a value of 0 depending on the value located within the IALR2.
** The programmed value within the base address register must comply with the PCI programming requirements for address alignment.
** Warning:
** When a non-zero value is not written to IALR2 prior to host configuration,
** the user should not set either the Prefetchable Indicator
** or the Type Indicator for 64 bit addressability.
** This is the default for IABAR2.
** Assuming a non-zero value is written to IALR2,
** the user may set the Prefetchable Indicator
** or the Type Indicator:
** a. Since non prefetchable memory windows can never be placed above the 4 Gbyte address boundary,
** when the Prefetchable Indicator is not set prior to host configuration,
** the user should also leave the Type Indicator set for 32 bit addressability.
** This is the default for IABAR2.
** b. when the Prefetchable Indicator is set prior to host configuration,
** the user should also set the Type Indicator for 64 bit addressability.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Translation Base Address 2 - These bits define the actual location
** the translation function is to respond to when addressed from the PCI bus.
** 11:04 00H Reserved.
** 03 0 2 Prefetchable Indicator - When set, defines the memory space as prefetchable.
** 02:01 00 2 Type Indicator - Defines the width of the addressability for this memory window:
** 00 - Memory Window is locatable anywhere in 32 bit address space
** 10 - Memory Window is locatable anywhere in 64 bit address space
** 00 0 2 Memory Space Indicator - This bit field describes memory or I/O space base address.
** The ATU does not occupy I/O space,
** thus this bit must be zero.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_BASE_ADDRESS2_REG 0x20 /*dword 0x23,0x22,0x21,0x20*/
/*
***********************************************************************************
** Inbound ATU Upper Base Address Register 2 - IAUBAR2
**
** This register contains the upper base address when decoding PCI addresses beyond 4 GBytes.
** Together with the Translation Base Address this register defines the actual location
** the translation function is to respond to when addressed from the PCI bus for addresses > 4GBytes (for DACs).
** The programmed value within the base address register must comply with the PCI programming
** requirements for address alignment.
** Note:
** When the Type indicator of IABAR2 is set to indicate 32 bit addressability,
** the IAUBAR2 register attributes are read-only.
** This is the default for IABAR2.
** -----------------------------------------------------------------
** Bit Default Description
** 31:0 00000H Translation Upper Base Address 2 - Together with the Translation Base Address 2
** these bits define the actual location the translation function is to respond to
** when addressed from the PCI bus for addresses > 4GBytes.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_UPPER_BASE_ADDRESS2_REG 0x24 /*dword 0x27,0x26,0x25,0x24*/
/*
***********************************************************************************
** ATU Subsystem Vendor ID Register - ASVIR
** -----------------------------------------------------------------
** Bit Default Description
** 15:0 0000H Subsystem Vendor ID - This register uniquely identifies the add-in board or subsystem vendor.
***********************************************************************************
*/
#define ARCMSR_ATU_SUBSYSTEM_VENDOR_ID_REG 0x2C /*word 0x2D,0x2C*/
/*
***********************************************************************************
** ATU Subsystem ID Register - ASIR
** -----------------------------------------------------------------
** Bit Default Description
** 15:0 0000H Subsystem ID - uniquely identifies the add-in board or subsystem.
***********************************************************************************
*/
#define ARCMSR_ATU_SUBSYSTEM_ID_REG 0x2E /*word 0x2F,0x2E*/
/*
***********************************************************************************
** Expansion ROM Base Address Register -ERBAR
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Expansion ROM Base Address - These bits define the actual location
** where the Expansion ROM address window resides when addressed from the PCI bus on any 4 Kbyte boundary.
** 11:01 000H Reserved
** 00 0 2 Address Decode Enable - This bit field shows the ROM address
** decoder is enabled or disabled. When cleared, indicates the address decoder is disabled.
***********************************************************************************
*/
#define ARCMSR_EXPANSION_ROM_BASE_ADDRESS_REG 0x30 /*dword 0x33,0x32,0v31,0x30*/
#define ARCMSR_EXPANSION_ROM_ADDRESS_DECODE_ENABLE 0x01
/*
***********************************************************************************
** ATU Capabilities Pointer Register - ATU_CAP_PTR
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 C0H Capability List Pointer - This provides an offset in this functionĦĤs configuration space
** that points to the 80331 PCl Bus Power Management extended capability.
***********************************************************************************
*/
#define ARCMSR_ATU_CAPABILITY_PTR_REG 0x34 /*byte*/
/*
***********************************************************************************
** Determining Block Sizes for Base Address Registers
** The required address size and type can be determined by writing ones to a base address register and
** reading from the registers. By scanning the returned value from the least-significant bit of the base
** address registers upwards, the programmer can determine the required address space size. The
** binary-weighted value of the first non-zero bit found indicates the required amount of space.
** Table 105 describes the relationship between the values read back and the byte sizes the base
** address register requires.
** As an example, assume that FFFF.FFFFH is written to the ATU Inbound Base Address Register 0
** (IABAR0) and the value read back is FFF0.0008H. Bit zero is a zero, so the device requires
** memory address space. Bit three is one, so the memory does supports prefetching. Scanning
** upwards starting at bit four, bit twenty is the first one bit found. The binary-weighted value of this
** bit is 1,048,576, indicated that the device requires 1 Mbyte of memory space.
** The ATU Base Address Registers and the Expansion ROM Base Address Register use their
** associated limit registers to enable which bits within the base address register are read/write and
** which bits are read only (0). This allows the programming of these registers in a manner similar to
** other PCI devices even though the limit is variable.
** Table 105. Memory Block Size Read Response
** Response After Writing all 1s
** to the Base Address Register
** Size
** (Bytes)
** Response After Writing all 1s
** to the Base Address Register
** Size
** (Bytes)
** FFFFFFF0H 16 FFF00000H 1 M
** FFFFFFE0H 32 FFE00000H 2 M
** FFFFFFC0H 64 FFC00000H 4 M
** FFFFFF80H 128 FF800000H 8 M
** FFFFFF00H 256 FF000000H 16 M
** FFFFFE00H 512 FE000000H 32 M
** FFFFFC00H 1K FC000000H 64 M
** FFFFF800H 2K F8000000H 128 M
** FFFFF000H 4K F0000000H 256 M
** FFFFE000H 8K E0000000H 512 M
** FFFFC000H 16K C0000000H 1 G
** FFFF8000H 32K 80000000H 2 G
** FFFF0000H 64K
** 00000000H
** Register not
** imple-mented,
** no
** address
** space
** required.
** FFFE0000H 128K
** FFFC0000H 256K
** FFF80000H 512K
**
***************************************************************************************
*/
/*
***********************************************************************************
** ATU Interrupt Line Register - ATUILR
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 FFH Interrupt Assigned - system-assigned value identifies which system interrupt controllerĦĤs interrupt
** request line connects to the device's PCI interrupt request lines
** (as specified in the interrupt pin register).
** A value of FFH signifies Ħ§no connectionĦ¨ or Ħ§unknownĦ¨.
***********************************************************************************
*/
#define ARCMSR_ATU_INTERRUPT_LINE_REG 0x3C /*byte*/
/*
***********************************************************************************
** ATU Interrupt Pin Register - ATUIPR
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 01H Interrupt Used - A value of 01H signifies that the ATU interface unit uses INTA# as the interrupt pin.
***********************************************************************************
*/
#define ARCMSR_ATU_INTERRUPT_PIN_REG 0x3D /*byte*/
/*
***********************************************************************************
** ATU Minimum Grant Register - ATUMGNT
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 80H This register specifies how long a burst period the device needs in increments of 8 PCI clocks.
***********************************************************************************
*/
#define ARCMSR_ATU_MINIMUM_GRANT_REG 0x3E /*byte*/
/*
***********************************************************************************
** ATU Maximum Latency Register - ATUMLAT
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 00H Specifies frequency (how often) the device needs to access the PCI bus
** in increments of 8 PCI clocks. A zero value indicates the device has no stringent requirement.
***********************************************************************************
*/
#define ARCMSR_ATU_MAXIMUM_LATENCY_REG 0x3F /*byte*/
/*
***********************************************************************************
** Inbound Address Translation
**
** The ATU allows external PCI bus initiators to directly access the internal bus.
** These PCI bus initiators can read or write 80331 memory-mapped registers or 80331 local memory space.
** The process of inbound address translation involves two steps:
** 1. Address Detection.
** ĦE Determine when the 32-bit PCI address (64-bit PCI address during DACs) is
** within the address windows defined for the inbound ATU.
** ĦE Claim the PCI transaction with medium DEVSEL# timing in the conventional PCI
** mode and with Decode A DEVSEL# timing in the PCI-X mode.
** 2. Address Translation.
** ĦE Translate the 32-bit PCI address (lower 32-bit PCI address during DACs) to a 32-bit 80331 internal bus address.
** The ATU uses the following registers in inbound address window 0 translation:
** ĦE Inbound ATU Base Address Register 0
** ĦE Inbound ATU Limit Register 0
** ĦE Inbound ATU Translate Value Register 0
** The ATU uses the following registers in inbound address window 2 translation:
** ĦE Inbound ATU Base Address Register 2
** ĦE Inbound ATU Limit Register 2
** ĦE Inbound ATU Translate Value Register 2
** The ATU uses the following registers in inbound address window 3 translation:
** ĦE Inbound ATU Base Address Register 3
** ĦE Inbound ATU Limit Register 3
** ĦE Inbound ATU Translate Value Register 3
** Note: Inbound Address window 1 is not a translate window.
** Instead, window 1 may be used to allocate host memory for Private Devices.
** Inbound Address window 3 does not reside in the standard section of the configuration header (offsets 00H - 3CH),
** thus the host BIOS does not configure window 3.
** Window 3 is intended to be used as a special window into local memory for private PCI
** agents controlled by the 80331 in conjunction with the Private Memory Space of the bridge.
** PCI-to-PCI Bridge in 80331 or
** Inbound address detection is determined from the 32-bit PCI address,
** (64-bit PCI address during DACs) the base address register and the limit register.
** In the case of DACs none of the upper 32-bits of the address is masked during address comparison.
**
** The algorithm for detection is:
**
** Equation 1. Inbound Address Detection
** When (PCI_Address [31:0] & Limit_Register[31:0]) == (Base_Register[31:0] & PCI_Address [63:32]) == Base_Register[63:32] (for DACs only)
** the PCI Address is claimed by the Inbound ATU.
**
** The incoming 32-bit PCI address (lower 32-bits of the address in case of DACs) is bitwise ANDed
** with the associated inbound limit register.
** When the result matches the base register (and upper base address matches upper PCI address in case of DACs),
** the inbound PCI address is detected as being within the inbound translation window and is claimed by the ATU.
**
** Note: The first 4 Kbytes of the ATU inbound address translation window 0 are reserved for the Messaging Unit.
** Once the transaction is claimed, the address must be translated from a PCI address to a 32-bit
** internal bus address. In case of DACs upper 32-bits of the address is simply discarded and only the
** lower 32-bits are used during address translation.
** The algorithm is:
**
**
** Equation 2. Inbound Translation
** Intel I/O processor Internal Bus Address=(PCI_Address[31:0] & ~Limit_Register[31:0]) | ATU_Translate_Value_Register[31:0].
**
** The incoming 32-bit PCI address (lower 32-bits in case of DACs) is first bitwise ANDed with the
** bitwise inverse of the limit register. This result is bitwise ORed with the ATU Translate Value and
** the result is the internal bus address. This translation mechanism is used for all inbound memory
** read and write commands excluding inbound configuration read and writes.
** In the PCI mode for inbound memory transactions, the only burst order supported is Linear
** Incrementing. For any other burst order, the ATU signals a Disconnect after the first data phase.
** The PCI-X supports linear incrementing only, and hence above situation is not encountered in the PCI-X mode.
** example:
** Register Values
** Base_Register=3A00 0000H
** Limit_Register=FF80 0000H (8 Mbyte limit value)
** Value_Register=B100 0000H
** Inbound Translation Window ranges from 3A00 0000H to 3A7F FFFFH (8 Mbytes)
**
** Address Detection (32-bit address)
**
** PCI_Address & Limit_Register == Base_Register
** 3A45 012CH & FF80 0000H == 3A00 0000H
**
** ANS: PCI_Address is in the Inbound Translation Window
** Address Translation (to get internal bus address)
**
** IB_Address=(PCI_Address & ~Limit_Register) | Value_Reg
** IB_Address=(3A45 012CH & 007F FFFFH) | B100 0000H
**
** ANS:IB_Address=B145 012CH
***********************************************************************************
*/
/*
***********************************************************************************
** Inbound ATU Limit Register 0 - IALR0
**
** Inbound address translation for memory window 0 occurs for data transfers occurring from the PCI
** bus (originated from the PCI bus) to the 80331 internal bus. The address translation block converts
** PCI addresses to internal bus addresses.
** The 80331 translate value registerĦĤs programmed value must be naturally aligned with the base
** address registerĦĤs programmed value. The limit register is used as a mask; thus, the lower address
** bits programmed into the 80331 translate value register are invalid. Refer to the PCI Local Bus
** Specification, Revision 2.3 for additional information on programming base address registers.
** Bits 31 to 12 within the IALR0 have a direct effect on the IABAR0 register, bits 31 to 12, with a
** one to one correspondence. A value of 0 in a bit within the IALR0 makes the corresponding bit
** within the IABAR0 a read only bit which always returns 0. A value of 1 in a bit within the IALR0
** makes the corresponding bit within the IABAR0 read/write from PCI. Note that a consequence of
** this programming scheme is that unless a valid value exists within the IALR0, all writes to the
** IABAR0 has no effect since a value of all zeros within the IALR0 makes the IABAR0 a read only register.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 FF000H Inbound Translation Limit 0 - This readback value determines the memory block size required for
** inbound memory window 0 of the address translation unit. This defaults to an inbound window of 16MB.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_LIMIT0_REG 0x40 /*dword 0x43,0x42,0x41,0x40*/
/*
***********************************************************************************
** Inbound ATU Translate Value Register 0 - IATVR0
**
** The Inbound ATU Translate Value Register 0 (IATVR0) contains the internal bus address used to
** convert PCI bus addresses. The converted address is driven on the internal bus as a result of the
** inbound ATU address translation.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 FF000H Inbound ATU Translation Value 0 - This value is used to convert the PCI address to internal bus addresses.
** This value must be 64-bit aligned on the internal bus.
** The default address allows the ATU to access the internal 80331 memory-mapped registers.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_TRANSLATE_VALUE0_REG 0x44 /*dword 0x47,0x46,0x45,0x44*/
/*
***********************************************************************************
** Expansion ROM Limit Register - ERLR
**
** The Expansion ROM Limit Register (ERLR) defines the block size of addresses the ATU defines
** as Expansion ROM address space. The block size is programmed by writing a value into the ERLR.
** Bits 31 to 12 within the ERLR have a direct effect on the ERBAR register, bits 31 to 12, with a one
** to one correspondence. A value of 0 in a bit within the ERLR makes the corresponding bit within
** the ERBAR a read only bit which always returns 0. A value of 1 in a bit within the ERLR makes
** the corresponding bit within the ERBAR read/write from PCI.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 000000H Expansion ROM Limit - Block size of memory required for the Expansion ROM translation unit. Default
** value is 0, which indicates no Expansion ROM address space and all bits within the ERBAR are read only with a value of 0.
** 11:00 000H Reserved.
***********************************************************************************
*/
#define ARCMSR_EXPANSION_ROM_LIMIT_REG 0x48 /*dword 0x4B,0x4A,0x49,0x48*/
/*
***********************************************************************************
** Expansion ROM Translate Value Register - ERTVR
**
** The Expansion ROM Translate Value Register contains the 80331 internal bus address which the
** ATU converts the PCI bus access. This address is driven on the internal bus as a result of the
** Expansion ROM address translation.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Expansion ROM Translation Value - Used to convert PCI addresses to 80331 internal bus addresses
** for Expansion ROM accesses. The Expansion ROM address translation value must be word aligned on the internal bus.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_EXPANSION_ROM_TRANSLATE_VALUE_REG 0x4C /*dword 0x4F,0x4E,0x4D,0x4C*/
/*
***********************************************************************************
** Inbound ATU Limit Register 1 - IALR1
**
** Bits 31 to 12 within the IALR1 have a direct effect on the IABAR1 register, bits 31 to 12, with a
** one to one correspondence. A value of 0 in a bit within the IALR1 makes the corresponding bit
** within the IABAR1 a read only bit which always returns 0. A value of 1 in a bit within the IALR1
** makes the corresponding bit within the IABAR1 read/write from PCI. Note that a consequence of
** this programming scheme is that unless a valid value exists within the IALR1, all writes to the
** IABAR1 has no effect since a value of all zeros within the IALR1 makes the IABAR1 a read only
** register.
** The inbound memory window 1 is used merely to allocate memory on the PCI bus. The ATU does
** not process any PCI bus transactions to this memory range.
** Warning: The ATU does not claim any PCI accesses that fall within the range defined by IABAR1,
** IAUBAR1, and IALR1.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Inbound Translation Limit 1 - This readback value determines the memory block size
** required for the ATUs memory window 1.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_LIMIT1_REG 0x50 /*dword 0x53,0x52,0x51,0x50*/
/*
***********************************************************************************
** Inbound ATU Limit Register 2 - IALR2
**
** Inbound address translation for memory window 2 occurs for data transfers occurring from the PCI
** bus (originated from the PCI bus) to the 80331 internal bus. The address translation block converts
** PCI addresses to internal bus addresses.
** The inbound translation base address for inbound window 2 is specified in Section 3.10.15. When
** determining block size requirements ĦX as described in Section 3.10.21 ĦX the translation limit
** register provides the block size requirements for the base address register. The remaining registers
** used for performing address translation are discussed in Section 3.2.1.1.
** The 80331 translate value registerĦĤs programmed value must be naturally aligned with the base
** address registerĦĤs programmed value. The limit register is used as a mask; thus, the lower address
** bits programmed into the 80331 translate value register are invalid. Refer to the PCI Local Bus
** Specification, Revision 2.3 for additional information on programming base address registers.
** Bits 31 to 12 within the IALR2 have a direct effect on the IABAR2 register, bits 31 to 12, with a
** one to one correspondence. A value of 0 in a bit within the IALR2 makes the corresponding bit
** within the IABAR2 a read only bit which always returns 0. A value of 1 in a bit within the IALR2
** makes the corresponding bit within the IABAR2 read/write from PCI. Note that a consequence of
** this programming scheme is that unless a valid value exists within the IALR2, all writes to the
** IABAR2 has no effect since a value of all zeros within the IALR2 makes the IABAR2 a read only
** register.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Inbound Translation Limit 2 - This readback value determines the memory block size
** required for the ATUs memory window 2.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_LIMIT2_REG 0x54 /*dword 0x57,0x56,0x55,0x54*/
/*
***********************************************************************************
** Inbound ATU Translate Value Register 2 - IATVR2
**
** The Inbound ATU Translate Value Register 2 (IATVR2) contains the internal bus address used to
** convert PCI bus addresses. The converted address is driven on the internal bus as a result of the
** inbound ATU address translation.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Inbound ATU Translation Value 2 - This value is used to convert the PCI address to internal bus addresses.
** This value must be 64-bit aligned on the internal bus.
** The default address allows the ATU to access the internal 80331 ** ** memory-mapped registers.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_TRANSLATE_VALUE2_REG 0x58 /*dword 0x5B,0x5A,0x59,0x58*/
/*
***********************************************************************************
** Outbound I/O Window Translate Value Register - OIOWTVR
**
** The Outbound I/O Window Translate Value Register (OIOWTVR) contains the PCI I/O address
** used to convert the internal bus access to a PCI address. This address is driven on the PCI bus as a
** result of the outbound ATU address translation.
** The I/O window is from 80331 internal bus address 9000 000H to 9000 FFFFH with the fixed
** length of 64 Kbytes.
** -----------------------------------------------------------------
** Bit Default Description
** 31:16 0000H Outbound I/O Window Translate Value - Used to convert internal bus addresses to PCI addresses.
** 15:00 0000H Reserved
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_IO_WINDOW_TRANSLATE_VALUE_REG 0x5C /*dword 0x5F,0x5E,0x5D,0x5C*/
/*
***********************************************************************************
** Outbound Memory Window Translate Value Register 0 -OMWTVR0
**
** The Outbound Memory Window Translate Value Register 0 (OMWTVR0) contains the PCI
** address used to convert 80331 internal bus addresses for outbound transactions. This address is
** driven on the PCI bus as a result of the outbound ATU address translation.
** The memory window is from internal bus address 8000 000H to 83FF FFFFH with the fixed length
** of 64 Mbytes.
** -----------------------------------------------------------------
** Bit Default Description
** 31:26 00H Outbound MW Translate Value - Used to convert 80331 internal bus addresses to PCI addresses.
** 25:02 00 0000H Reserved
** 01:00 00 2 Burst Order - This bit field shows the address sequence during a memory burst.
** Only linear incrementing mode is supported.
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_MEMORY_WINDOW_TRANSLATE_VALUE0_REG 0x60 /*dword 0x63,0x62,0x61,0x60*/
/*
***********************************************************************************
** Outbound Upper 32-bit Memory Window Translate Value Register 0 - OUMWTVR0
**
** The Outbound Upper 32-bit Memory Window Translate Value Register 0 (OUMWTVR0) defines
** the upper 32-bits of address used during a dual address cycle. This enables the outbound ATU to
** directly address anywhere within the 64-bit host address space. When this register is all-zero, then
** a SAC is generated on the PCI bus.
** The memory window is from internal bus address 8000 000H to 83FF FFFFH with the fixed
** length of 64 Mbytes.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000 0000H These bits define the upper 32-bits of address driven during the dual address cycle (DAC).
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_UPPER32_MEMORY_WINDOW_TRANSLATE_VALUE0_REG 0x64 /*dword 0x67,0x66,0x65,0x64*/
/*
***********************************************************************************
** Outbound Memory Window Translate Value Register 1 -OMWTVR1
**
** The Outbound Memory Window Translate Value Register 1 (OMWTVR1) contains the PCI
** address used to convert 80331 internal bus addresses for outbound transactions. This address is
** driven on the PCI bus as a result of the outbound ATU address translation.
** The memory window is from internal bus address 8400 000H to 87FF FFFFH with the fixed length
** of 64 Mbytes.
** -----------------------------------------------------------------
** Bit Default Description
** 31:26 00H Outbound MW Translate Value - Used to convert 80331 internal bus addresses to PCI addresses.
** 25:02 00 0000H Reserved
** 01:00 00 2 Burst Order - This bit field shows the address sequence during a memory burst.
** Only linear incrementing mode is supported.
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_MEMORY_WINDOW_TRANSLATE_VALUE1_REG 0x68 /*dword 0x6B,0x6A,0x69,0x68*/
/*
***********************************************************************************
** Outbound Upper 32-bit Memory Window Translate Value Register 1 - OUMWTVR1
**
** The Outbound Upper 32-bit Memory Window Translate Value Register 1 (OUMWTVR1) defines
** the upper 32-bits of address used during a dual address cycle. This enables the outbound ATU to
** directly address anywhere within the 64-bit host address space. When this register is all-zero, then
** a SAC is generated on the PCI bus.
** The memory window is from internal bus address 8400 000H to 87FF FFFFH with the fixed length
** of 64 Mbytes.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000 0000H These bits define the upper 32-bits of address driven during the dual address cycle (DAC).
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_UPPER32_MEMORY_WINDOW_TRANSLATE_VALUE1_REG 0x6C /*dword 0x6F,0x6E,0x6D,0x6C*/
/*
***********************************************************************************
** Outbound Upper 32-bit Direct Window Translate Value Register - OUDWTVR
**
** The Outbound Upper 32-bit Direct Window Translate Value Register (OUDWTVR) defines the
** upper 32-bits of address used during a dual address cycle for the transactions via Direct Addressing
** Window. This enables the outbound ATU to directly address anywhere within the 64-bit host
** address space. When this register is all-zero, then a SAC is generated on the PCI bus.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000 0000H These bits define the upper 32-bits of address driven during the dual address cycle (DAC).
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_UPPER32_DIRECT_WINDOW_TRANSLATE_VALUE_REG 0x78 /*dword 0x7B,0x7A,0x79,0x78*/
/*
***********************************************************************************
** ATU Configuration Register - ATUCR
**
** The ATU Configuration Register controls the outbound address translation for address translation
** unit. It also contains bits for Conventional PCI Delayed Read Command (DRC) aliasing, discard
** timer status, SERR# manual assertion, SERR# detection interrupt masking, and ATU BIST
** interrupt enabling.
** -----------------------------------------------------------------
** Bit Default Description
** 31:20 00H Reserved
** 19 0 2 ATU DRC Alias - when set, the ATU does not distinguish read commands when attempting to match a
** current PCI read transaction with read data enqueued within the DRC buffer. When clear, a current read
** transaction must have the exact same read command as the DRR for the ATU to deliver DRC data. Not
** applicable in the PCI-X mode.
** 18 0 2 Direct Addressing Upper 2Gbytes Translation Enable - When set,
** with Direct Addressing enabled (bit 7 of the ATUCR set),
** the ATU forwards internal bus cycles with an address between 0000.0040H and
** 7FFF.FFFFH to the PCI bus with bit 31 of the address set (8000.0000H - FFFF.FFFFH).
** When clear, no translation occurs.
** 17 0 2 Reserved
** 16 0 2 SERR# Manual Assertion - when set, the ATU asserts SERR# for one clock on the PCI interface. Until
** cleared, SERR# may not be manually asserted again. Once cleared, operation proceeds as specified.
** 15 0 2 ATU Discard Timer Status - when set, one of the 4 discard timers within the ATU has expired and
** discarded the delayed completion transaction within the queue. When clear, no timer has expired.
** 14:10 00000 2 Reserved
** 09 0 2 SERR# Detected Interrupt Enable - When set, the Intel XScale core is signalled an HPI# interrupt
** when the ATU detects that SERR# was asserted. When clear,
** the Intel XScale core is not interrupted when SERR# is detected.
** 08 0 2 Direct Addressing Enable - Setting this bit enables direct outbound addressing through the ATU.
** Internal bus cycles with an address between 0000.0040H and 7FFF.FFFFH automatically forwards to
** the PCI bus with or without translation of address bit 31 based on the setting of bit 18 of
** the ATUCR.
** 07:04 0000 2 Reserved
** 03 0 2 ATU BIST Interrupt Enable - When set, enables an interrupt to the Intel XScale core when the start
** BIST bit is set in the ATUBISTR register. This bit is also reflected as the BIST Capable bit 7
** in the ATUBISTR register.
** 02 0 2 Reserved
** 01 0 2 Outbound ATU Enable - When set, enables the outbound address translation unit.
** When cleared, disables the outbound ATU.
** 00 0 2 Reserved
***********************************************************************************
*/
#define ARCMSR_ATU_CONFIGURATION_REG 0x80 /*dword 0x83,0x82,0x81,0x80*/
/*
***********************************************************************************
** PCI Configuration and Status Register - PCSR
**
** The PCI Configuration and Status Register has additional bits for controlling and monitoring
** various features of the PCI bus interface.
** -----------------------------------------------------------------
** Bit Default Description
** 31:19 0000H Reserved
** 18 0 2 Detected Address or Attribute Parity Error - set when a parity error is detected during either the address
** or attribute phase of a transaction on the PCI bus even when the ATUCMD register Parity Error
** Response bit is cleared. Set under the following conditions:
** ĦE Any Address or Attribute (PCI-X Only) Parity Error on the Bus (including one generated by the ATU).
** 17:16 Varies with
** external state
** of DEVSEL#,
** STOP#, and
** TRDY#,
** during
** P_RST#
** PCI-X capability - These two bits define the mode of
** the PCI bus (conventional or PCI-X) as well as the
** operating frequency in the case of PCI-X mode.
** 00 - Conventional PCI mode
** 01 - PCI-X 66
** 10 - PCI-X 100
** 11 - PCI-X 133
** As defined by the PCI-X Addendum to the PCI Local Bus Specification,
** Revision 1.0a, the operating
** mode is determined by an initialization pattern on the PCI bus during
** P_RST# assertion:
** DEVSEL# STOP# TRDY# Mode
** Deasserted Deasserted Deasserted Conventional
** Deasserted Deasserted Asserted PCI-X 66
** Deasserted Asserted Deasserted PCI-X 100
** Deasserted Asserted Asserted PCI-X 133
** All other patterns are reserved.
** 15 0 2
** Outbound Transaction Queue Busy:
** 0=Outbound Transaction Queue Empty
** 1=Outbound Transaction Queue Busy
** 14 0 2
** Inbound Transaction Queue Busy:
** 0=Inbound Transaction Queue Empty
** 1=Inbound Transaction Queue Busy
** 13 0 2 Reserved.
** 12 0 2 Discard Timer Value - This bit controls the time-out value
** for the four discard timers attached to the queues holding read data.
** A value of 0 indicates the time-out value is 2 15 clocks.
** A value of 1 indicates the time-out value is 2 10 clocks.
** 11 0 2 Reserved.
** 10 Varies with
** external state
** of M66EN
** during
** P_RST#
** Bus Operating at 66 MHz - When set, the interface has been initialized to function at 66 MHz in
** Conventional PCI mode by the assertion of M66EN during bus initialization.
** When clear, the interface
** has been initialized as a 33 MHz bus.
** NOTE: When PCSR bits 17:16 are not equal to zero, then this bit is meaningless since the 80331 is operating in PCI-X mode.
** 09 0 2 Reserved
** 08 Varies with
** external state
** of REQ64#
** during
** P_RST#
** PCI Bus 64-Bit Capable - When clear, the PCI bus interface has been
** configured as 64-bit capable by
** the assertion of REQ64# on the rising edge of P_RST#. When set,
** the PCI interface is configured as
** 32-bit only.
** 07:06 00 2 Reserved.
** 05 0 2 Reset Internal Bus - This bit controls the reset of the Intel XScale core
** and all units on the internal
** bus. In addition to the internal bus initialization,
** this bit triggers the assertion of the M_RST# pin for
** initialization of registered DIMMs. When set:
** When operating in the conventional PCI mode:
** ĦE All current PCI transactions being mastered by the ATU completes,
** and the ATU master interfaces
** proceeds to an idle state. No additional transactions is mastered by these units
** until the internal bus reset is complete.
** ĦE All current transactions being slaved by the ATU on either the PCI bus
** or the internal bus
** completes, and the ATU target interfaces proceeds to an idle state.
** All future slave transactions master aborts,
** with the exception of the completion cycle for the transaction that set the Reset
** Internal Bus bit in the PCSR.
** ĦE When the value of the Core Processor Reset bit in the PCSR (upon P_RST# assertion)
** is set, the Intel XScale core is held in reset when the internal bus reset is complete.
** ĦE The ATU ignores configuration cycles, and they appears as master aborts for: 32
** Internal Bus clocks.
** ĦE The 80331 hardware clears this bit after the reset operation completes.
** When operating in the PCI-X mode:
** The ATU hardware responds the same as in Conventional PCI-X mode.
** However, this may create a problem in PCI-X mode for split requests in
** that there may still be an outstanding split completion that the
** ATU is either waiting to receive (Outbound Request) or initiate
** (Inbound Read Request). For a cleaner
** internal bus reset, host software can take the following steps prior
** to asserting Reset Internal bus:
** 1. Clear the Bus Master (bit 2 of the ATUCMD) and the Memory Enable (bit 1 of the ATUCMD) bits in
** the ATUCMD. This ensures that no new transactions, either outbound or inbound are enqueued.
** 2. Wait for both the Outbound (bit 15 of the PCSR) and Inbound Read (bit 14 of the PCSR) Transaction
** queue busy bits to be clear.
** 3. Set the Reset Internal Bus bit
** As a result, the ATU hardware resets the internal bus using the same logic as in conventional mode,
** however the user is now assured that the ATU no longer has any pending inbound or outbound split
** completion transactions.
** NOTE: Since the Reset Internal Bus bit is set using an inbound configuration cycle, the user is
** guaranteed that any prior configuration cycles have properly completed since there is only a one
** deep transaction queue for configuration transaction requests. The ATU sends the appropriate
** Split Write Completion Message to the Requester prior to the onset of Internal Bus Reset.
** 04 0 2 Bus Master Indicator Enable: Provides software control for the
** Bus Master Indicator signal P_BMI used
** for external RAIDIOS logic control of private devices. Only valid when operating with the bridge and
** central resource/arbiter disabled (BRG_EN =low, ARB_EN=low).
** 03 Varies with external state of PRIVDEV during
** P_RST#
** Private Device Enable - This bit indicates the state of the reset strap which enables the private device
** control mechanism within the PCI-to-PCI Bridge SISR configuration register.
** 0=Private Device control Disabled - SISR register bits default to zero
** 1=Private Device control Enabled - SISR register bits default to one
** 02 Varies with external state of RETRY during P_RST#
** Configuration Cycle Retry - When this bit is set, the PCI interface of the 80331 responds to all
** configuration cycles with a Retry condition. When clear, the 80331 responds to the appropriate
** configuration cycles.
** The default condition for this bit is based on the external state of the RETRY pin at the rising edge of
** P_RST#. When the external state of the pin is high, the bit is set. When the external state of the pin is
** low, the bit is cleared.
** 01 Varies with external state of CORE_RST# during P_RST#
** Core Processor Reset - This bit is set to its default value by the hardware when either P_RST# is
** asserted or the Reset Internal Bus bit in PCSR is set. When this bit is set, the Intel XScale core is
** being held in reset. Software cannot set this bit. Software is required to clear this bit to deassert Intel
** XScale core reset.
** The default condition for this bit is based on the external state of the CORE_RST# pin at the rising edge
** of P_RST#. When the external state of the pin is low, the bit is set. When the external state of the pin is
** high, the bit is clear.
** 00 Varies with external state of PRIVMEM during P_RST#
** Private Memory Enable - This bit indicates the state of the reset strap which enables the private device
** control mechanism within the PCI-to-PCI Bridge SDER configuration register.
** 0=Private Memory control Disabled - SDER register bit 2 default to zero
** 1=Private Memory control Enabled - SDER register bits 2 default to one
***********************************************************************************
*/
#define ARCMSR_PCI_CONFIGURATION_STATUS_REG 0x84 /*dword 0x87,0x86,0x85,0x84*/
/*
***********************************************************************************
** ATU Interrupt Status Register - ATUISR
**
** The ATU Interrupt Status Register is used to notify the core processor of the source of an ATU
** interrupt. In addition, this register is written to clear the source of the interrupt to the interrupt unit
** of the 80331. All bits in this register are Read/Clear.
** Bits 4:0 are a direct reflection of bits 14:11 and bit 8 (respectively) of the ATU Status Register
** (these bits are set at the same time by hardware but need to be cleared independently). Bit 7 is set
** by an error associated with the internal bus of the 80331. Bit 8 is for software BIST. The
** conditions that result in an ATU interrupt are cleared by writing a 1 to the appropriate bits in this
** register.
** Note: Bits 4:0, and bits 15 and 13:7 can result in an interrupt being driven to the Intel XScale core.
** -----------------------------------------------------------------
** Bit Default Description
** 31:18 0000H Reserved
** 17 0 2 VPD Address Register Updated - This bit is set when a PCI bus configuration write occurs to the VPDAR
** register. Configuration register writes to the VPDAR does NOT result in bit 15 also being set. When set,
** this bit results in the assertion of the ATU Configure Register Write Interrupt.
** 16 0 2 Reserved
** 15 0 2 ATU Configuration Write - This bit is set when a PCI bus configuration write occurs to any ATU register.
** When set, this bit results in the assertion of the ATU Configure Register Write Interrupt.
** 14 0 2 ATU Inbound Memory Window 1 Base Updated - This bit is set when a PCI bus configuration write
** occurs to either the IABAR1 register or the IAUBAR1 register. Configuration register writes to these
** registers deos NOT result in bit 15 also being set. When set, this bit results in the assertion of the ATU
** Configure Register Write Interrupt.
** 13 0 2 Initiated Split Completion Error Message - This bit is set when the device initiates a Split Completion
** Message on the PCI Bus with the Split Completion Error attribute bit set.
** 12 0 2 Received Split Completion Error Message - This bit is set when the device receives a Split Completion
** Message from the PCI Bus with the Split Completion Error attribute bit set.
** 11 0 2 Power State Transition - When the Power State Field of the ATU Power Management Control/Status
** Register is written to transition the ATU function Power State from D0 to D3, D0 to D1, or D3 to D0 and
** the ATU Power State Transition Interrupt mask bit is cleared, this bit is set.
** 10 0 2 P_SERR# Asserted - set when P_SERR# is asserted on the PCI bus by the ATU.
** 09 0 2 Detected Parity Error - set when a parity error is detected on the PCI bus even when the ATUCMD
** registerĦĤs Parity Error Response bit is cleared. Set under the following conditions:
** ĦE Write Data Parity Error when the ATU is a target (inbound write).
** ĦE Read Data Parity Error when the ATU is an initiator (outbound read).
** ĦE Any Address or Attribute (PCI-X Only) Parity Error on the Bus.
** 08 0 2 ATU BIST Interrupt - When set, generates the ATU BIST Start Interrupt and indicates the host processor
** has set the Start BIST bit (ATUBISTR register bit 6), when the ATU BIST interrupt is enabled (ATUCR
** register bit 3). The Intel XScale core can initiate the software BIST and store the result in ATUBISTR
** register bits 3:0.
** Configuration register writes to the ATUBISTR does NOT result in bit 15 also being set or the assertion
** of the ATU Configure Register Write Interrupt.
** 07 0 2 Internal Bus Master Abort - set when a transaction initiated by the ATU internal bus initiator interface ends in a Master-abort.
** 06:05 00 2 Reserved.
** 04 0 2 P_SERR# Detected - set when P_SERR# is detected on the PCI bus by the ATU.
** 03 0 2 PCI Master Abort - set when a transaction initiated by the ATU PCI initiator interface ends in a Master-abort.
** 02 0 2 PCI Target Abort (master) - set when a transaction initiated by the ATU PCI master interface ends in a Target-abort.
** 01 0 2 PCI Target Abort (target) - set when the ATU interface, acting as a target, terminates the transaction on the PCI bus with a target abort.
** 00 0 2 PCI Master Parity Error - Master Parity Error - The ATU interface sets this bit under the following
** conditions:
** ĦE The ATU asserted PERR# itself or the ATU observed PERR# asserted.
** ĦE And the ATU acted as the requester for the operation in which the error occurred.
** ĦE And the ATUCMD registerĦĤs Parity Error Response bit is set
** ĦE Or (PCI-X Mode Only) the ATU received a Write Data Parity Error Message
** ĦE And the ATUCMD registerĦĤs Parity Error Response bit is set
***********************************************************************************
*/
#define ARCMSR_ATU_INTERRUPT_STATUS_REG 0x88 /*dword 0x8B,0x8A,0x89,0x88*/
/*
***********************************************************************************
** ATU Interrupt Mask Register - ATUIMR
**
** The ATU Interrupt Mask Register contains the control bit to enable and disable interrupts
** generated by the ATU.
** -----------------------------------------------------------------
** Bit Default Description
** 31:15 0 0000H Reserved
** 14 0 2 VPD Address Register Updated Mask - Controls the setting of bit 17 of the ATUISR and generation of the
** ATU Configuration Register Write interrupt when a PCI bus write occurs to the VPDAR register.
** 0=Not Masked
** 1=Masked
** 13 0 2 Reserved
** 12 0 2 Configuration Register Write Mask - Controls the setting of bit 15 of the ATUISR and generation of the
** ATU Configuration Register Write interrupt when a PCI bus write occurs to any ATU configuration register
** except those covered by mask bit 11 and bit 14 of this register, and ATU BIST enable bit 3 of the ATUCR.
** 0=Not Masked
** 1=Masked
** 11 1 2 ATU Inbound Memory Window 1 Base Updated Mask - Controls the setting of bit 14 of the ATUISR and
** generation of the ATU Configuration Register Write interrupt when a PCI bus write occurs to either the
** IABAR1 register or the IAUBAR1 register.
** 0=Not Masked
** 1=Masked
** 10 0 2 Initiated Split Completion Error Message Interrupt Mask - Controls the setting of bit 13 of the ATUISR and
** generation of the ATU Error interrupt when the ATU initiates a Split Completion Error Message.
** 0=Not Masked
** 1=Masked
** 09 0 2 Received Split Completion Error Message Interrupt Mask- Controls the setting of bit 12 of the ATUISR
** and generation of the ATU Error interrupt when a Split Completion Error Message results in bit 29 of the
** PCIXSR being set.
** 0=Not Masked
** 1=Masked
** 08 1 2 Power State Transition Interrupt Mask - Controls the setting of bit 12 of the ATUISR and generation of the
** ATU Error interrupt when ATU Power Management Control/Status Register is written to transition the
** ATU Function Power State from D0 to D3, D0 to D1, D1 to D3 or D3 to D0.
** 0=Not Masked
** 1=Masked
** 07 0 2 ATU Detected Parity Error Interrupt Mask - Controls the setting of bit 9 of the ATUISR and generation of
** the ATU Error interrupt when a parity error detected on the PCI bus that sets bit 15 of the ATUSR.
** 0=Not Masked
** 1=Masked
** 06 0 2 ATU SERR# Asserted Interrupt Mask - Controls the setting of bit 10 of the ATUISR and generation of the
** ATU Error interrupt when SERR# is asserted on the PCI interface resulting in bit 14 of the ATUSR being set.
** 0=Not Masked
** 1=Masked
** NOTE: This bit is specific to the ATU asserting SERR# and not detecting SERR# from another master.
** 05 0 2 ATU PCI Master Abort Interrupt Mask - Controls the setting of bit 3 of the ATUISR and generation of the
** ATU Error interrupt when a master abort error resulting in bit 13 of the ATUSR being set.
** 0=Not Masked
** 1=Masked
** 04 0 2 ATU PCI Target Abort (Master) Interrupt Mask- Controls the setting of bit 12 of the ATUISR and ATU Error
** generation of the interrupt when a target abort error resulting in bit 12 of the ATUSR being set
** 0=Not Masked
** 1=Masked
** 03 0 2 ATU PCI Target Abort (Target) Interrupt Mask- Controls the setting of bit 1 of the ATUISR and generation
** of the ATU Error interrupt when a target abort error resulting in bit 11 of the ATUSR being set.
** 0=Not Masked
** 1=Masked
** 02 0 2 ATU PCI Master Parity Error Interrupt Mask - Controls the setting of bit 0 of the ATUISR and generation
** of the ATU Error interrupt when a parity error resulting in bit 8 of the ATUSR being set.
** 0=Not Masked
** 1=Masked
** 01 0 2 ATU Inbound Error SERR# Enable - Controls when the ATU asserts (when enabled through the
** ATUCMD) SERR# on the PCI interface in response to a master abort on the internal bus during an
** inbound write transaction.
** 0=SERR# Not Asserted due to error
** 1=SERR# Asserted due to error
** 00 0 2 ATU ECC Target Abort Enable - Controls the ATU response on the PCI interface to a target abort (ECC
** error) from the memory controller on the internal bus. In conventional mode, this action only occurs
** during an inbound read transaction where the data phase that was target aborted on the internal bus is
** actually requested from the inbound read queue.
** 0=Disconnect with data
** (the data being up to 64 bits of 1ĦĤs)
** 1=Target Abort
** NOTE: In PCI-X Mode, The ATU initiates a Split Completion Error Message (with message class=2h -
** completer error and message index=81h - 80331 internal bus target abort) on the PCI bus,
** independent of the setting of this bit.
***********************************************************************************
*/
#define ARCMSR_ATU_INTERRUPT_MASK_REG 0x8C /*dword 0x8F,0x8E,0x8D,0x8C*/
/*
***********************************************************************************
** Inbound ATU Base Address Register 3 - IABAR3
**
** . The Inbound ATU Base Address Register 3 (IABAR3) together with the Inbound ATU Upper Base Address Register 3 (IAUBAR3) defines the block
** of memory addresses where the inbound translation window 3 begins.
** . The inbound ATU decodes and forwards the bus request to the 80331 internal bus with a translated address to map into 80331 local memory.
** . The IABAR3 and IAUBAR3 define the base address and describes the required memory block size.
** . Bits 31 through 12 of the IABAR3 is either read/write bits or read only with a value of 0 depending on the value located within the IALR3.
** The programmed value within the base address register must comply with the PCI programming requirements for address alignment.
** Note:
** Since IABAR3 does not appear in the standard PCI configuration header space (offsets 00H - 3CH),
** IABAR3 is not configured by the host during normal system initialization.
** Warning:
** When a non-zero value is not written to IALR3,
** the user should not set either the Prefetchable Indicator
** or the Type Indicator for 64 bit addressability.
** This is the default for IABAR3.
** Assuming a non-zero value is written to IALR3,
** the user may set the Prefetchable Indicator
** or the Type Indicator:
** a. Since non prefetchable memory windows can never be placed above the 4 Gbyte address boundary,
** when the Prefetchable Indicator is not set,
** the user should also leave the Type Indicator set for 32 bit addressability.
** This is the default for IABAR3.
** b. when the Prefetchable Indicator is set,
** the user should also set the Type Indicator for 64 bit addressability.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Translation Base Address 3 - These bits define the actual location
** the translation function is to respond to when addressed from the PCI bus.
** 11:04 00H Reserved.
** 03 0 2 Prefetchable Indicator - When set, defines the memory space as prefetchable.
** 02:01 00 2 Type Indicator - Defines the width of the addressability for this memory window:
** 00 - Memory Window is locatable anywhere in 32 bit address space
** 10 - Memory Window is locatable anywhere in 64 bit address space
** 00 0 2 Memory Space Indicator - This bit field describes memory or I/O space base address.
** The ATU does not occupy I/O space,
** thus this bit must be zero.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_BASE_ADDRESS3_REG 0x90 /*dword 0x93,0x92,0x91,0x90*/
/*
***********************************************************************************
** Inbound ATU Upper Base Address Register 3 - IAUBAR3
**
** This register contains the upper base address when decoding PCI addresses beyond 4 GBytes.
** Together with the Translation Base Address this register defines the actual location
** the translation function is to respond to when addressed from the PCI bus for addresses > 4GBytes (for DACs).
** The programmed value within the base address register must comply with the PCI programming
** requirements for address alignment.
** Note:
** When the Type indicator of IABAR3 is set to indicate 32 bit addressability,
** the IAUBAR3 register attributes are read-only.
** This is the default for IABAR3.
** -----------------------------------------------------------------
** Bit Default Description
** 31:0 00000H Translation Upper Base Address 3 - Together with the Translation Base Address 3 these bits define
** the actual location the translation function is to respond to when addressed from the PCI bus for addresses > 4GBytes.
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_UPPER_BASE_ADDRESS3_REG 0x94 /*dword 0x97,0x96,0x95,0x94*/
/*
***********************************************************************************
** Inbound ATU Limit Register 3 - IALR3
**
** Inbound address translation for memory window 3 occurs for data transfers occurring from the PCI
** bus (originated from the PCI bus) to the 80331 internal bus. The address translation block converts
** PCI addresses to internal bus addresses.
** The inbound translation base address for inbound window 3 is specified in Section 3.10.15. When
** determining block size requirements ĦX as described in Section 3.10.21 ĦX the translation limit
** register provides the block size requirements for the base address register. The remaining registers
** used for performing address translation are discussed in Section 3.2.1.1.
** The 80331 translate value registerĦĤs programmed value must be naturally aligned with the base
** address registerĦĤs programmed value. The limit register is used as a mask; thus, the lower address
** bits programmed into the 80331 translate value register are invalid. Refer to the PCI Local Bus
** Specification, Revision 2.3 for additional information on programming base address registers.
** Bits 31 to 12 within the IALR3 have a direct effect on the IABAR3 register, bits 31 to 12, with a
** one to one correspondence. A value of 0 in a bit within the IALR3 makes the corresponding bit
** within the IABAR3 a read only bit which always returns 0. A value of 1 in a bit within the IALR3
** makes the corresponding bit within the IABAR3 read/write from PCI. Note that a consequence of
** this programming scheme is that unless a valid value exists within the IALR3, all writes to the
** IABAR3 has no effect since a value of all zeros within the IALR3 makes the IABAR3 a read only
** register.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Inbound Translation Limit 3 - This readback value determines the memory block size required
** for the ATUs memory window 3.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_LIMIT3_REG 0x98 /*dword 0x9B,0x9A,0x99,0x98*/
/*
***********************************************************************************
** Inbound ATU Translate Value Register 3 - IATVR3
**
** The Inbound ATU Translate Value Register 3 (IATVR3) contains the internal bus address used to
** convert PCI bus addresses. The converted address is driven on the internal bus as a result of the
** inbound ATU address translation.
** -----------------------------------------------------------------
** Bit Default Description
** 31:12 00000H Inbound ATU Translation Value 3 - This value is used to convert the PCI address to internal bus addresses.
** This value must be 64-bit aligned on the internal bus. The default address allows the ATU to
** access the internal 80331 memory-mapped registers.
** 11:00 000H Reserved
***********************************************************************************
*/
#define ARCMSR_INBOUND_ATU_TRANSLATE_VALUE3_REG 0x9C /*dword 0x9F,0x9E,0x9D,0x9C*/
/*
***********************************************************************************
** Outbound Configuration Cycle Address Register - OCCAR
**
** The Outbound Configuration Cycle Address Register is used to hold the 32-bit PCI configuration
** cycle address. The Intel XScale core writes the PCI configuration cycles address which then
** enables the outbound configuration read or write. The Intel XScale core then performs a read or
** write to the Outbound Configuration Cycle Data Register to initiate the configuration cycle on the
** PCI bus.
** Note: Bits 15:11 of the configuration cycle address for Type 0 configuration cycles are defined differently
** for Conventional versus PCI-X modes. When 80331 software programs the OCCAR to initiate a
** Type 0 configuration cycle, the OCCAR should always be loaded based on the PCI-X definition for
** the Type 0 configuration cycle address. When operating in Conventional mode, the 80331 clears
** bits 15:11 of the OCCAR prior to initiating an outbound Type 0 configuration cycle. See the PCI-X
** Addendum to the PCI Local Bus Specification, Revision 1.0a for details on the two formats.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000 0000H Configuration Cycle Address - These bits define the 32-bit PCI address used during an outbound
** configuration read or write cycle.
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_CONFIGURATION_CYCLE_ADDRESS_REG 0xA4 /*dword 0xA7,0xA6,0xA5,0xA4*/
/*
***********************************************************************************
** Outbound Configuration Cycle Data Register - OCCDR
**
** The Outbound Configuration Cycle Data Register is used to initiate a configuration read or write
** on the PCI bus. The register is logical rather than physical meaning that it is an address not a
** register. The Intel XScale core reads or writes the data registers memory-mapped address to
** initiate the configuration cycle on the PCI bus with the address found in the OCCAR. For a
** configuration write, the data is latched from the internal bus and forwarded directly to the OWQ.
** For a read, the data is returned directly from the ORQ to the Intel XScale core and is never
** actually entered into the data register (which does not physically exist).
** The OCCDR is only visible from 80331 internal bus address space and appears as a reserved value
** within the ATU configuration space.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000 0000H Configuration Cycle Data - These bits define the data used during an outbound configuration read
** or write cycle.
***********************************************************************************
*/
#define ARCMSR_OUTBOUND_CONFIGURATION_CYCLE_DATA_REG 0xAC /*dword 0xAF,0xAE,0xAD,0xAC*/
/*
***********************************************************************************
** VPD Capability Identifier Register - VPD_CAPID
**
** The Capability Identifier Register bits adhere to the definitions in the PCI Local Bus Specification,
** Revision 2.3. This register in the PCI Extended Capability header identifies the type of Extended
** Capability contained in that header. In the case of the 80331, this is the VPD extended capability
** with an ID of 03H as defined by the PCI Local Bus Specification, Revision 2.3.
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 03H Cap_Id - This field with itsĦĤ 03H value identifies this item in the linked list of Extended Capability
** Headers as being the VPD capability registers.
***********************************************************************************
*/
#define ARCMSR_VPD_CAPABILITY_IDENTIFIER_REG 0xB8 /*byte*/
/*
***********************************************************************************
** VPD Next Item Pointer Register - VPD_NXTP
**
** The Next Item Pointer Register bits adhere to the definitions in the PCI Local Bus Specification,
** Revision 2.3. This register describes the location of the next item in the functionĦĤs capability list.
** For the 80331, this the final capability list, and hence, this register is set to 00H.
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 00H Next_ Item_ Pointer - This field provides an offset into the functionĦĤs configuration space pointing to the
** next item in the functionĦĤs capability list. Since the VPD capabilities are the last in the linked list of
** extended capabilities in the 80331, the register is set to 00H.
***********************************************************************************
*/
#define ARCMSR_VPD_NEXT_ITEM_PTR_REG 0xB9 /*byte*/
/*
***********************************************************************************
** VPD Address Register - VPD_AR
**
** The VPD Address register (VPDAR) contains the DWORD-aligned byte address of the VPD to be
** accessed. The register is read/write and the initial value at power-up is indeterminate.
** A PCI Configuration Write to the VPDAR interrupts the Intel XScale core. Software can use
** the Flag setting to determine whether the configuration write was intended to initiate a read or
** write of the VPD through the VPD Data Register.
** -----------------------------------------------------------------
** Bit Default Description
** 15 0 2 Flag - A flag is used to indicate when a transfer of data between the VPD Data Register and the storage
** component has completed. Please see Section 3.9, Ħ§Vital Product DataĦ¨ on page 201 for more details on
** how the 80331 handles the data transfer.
** 14:0 0000H VPD Address - This register is written to set the DWORD-aligned byte address used to read or write
** Vital Product Data from the VPD storage component.
***********************************************************************************
*/
#define ARCMSR_VPD_ADDRESS_REG 0xBA /*word 0xBB,0xBA*/
/*
***********************************************************************************
** VPD Data Register - VPD_DR
**
** This register is used to transfer data between the 80331 and the VPD storage component.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000H VPD Data - Four bytes are always read or written through this register to/from the VPD storage component.
***********************************************************************************
*/
#define ARCMSR_VPD_DATA_REG 0xBC /*dword 0xBF,0xBE,0xBD,0xBC*/
/*
***********************************************************************************
** Power Management Capability Identifier Register -PM_CAPID
**
** The Capability Identifier Register bits adhere to the definitions in the PCI Local Bus Specification,
** Revision 2.3. This register in the PCI Extended Capability header identifies the type of Extended
** Capability contained in that header. In the case of the 80331, this is the PCI Bus Power
** Management extended capability with an ID of 01H as defined by the PCI Bus Power Management
** Interface Specification, Revision 1.1.
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 01H Cap_Id - This field with itsĦĤ 01H value identifies this item in the linked list of Extended Capability
** Headers as being the PCI Power Management Registers.
***********************************************************************************
*/
#define ARCMSR_POWER_MANAGEMENT_CAPABILITY_IDENTIFIER_REG 0xC0 /*byte*/
/*
***********************************************************************************
** Power Management Next Item Pointer Register - PM_NXTP
**
** The Next Item Pointer Register bits adhere to the definitions in the PCI Local Bus Specification,
** Revision 2.3. This register describes the location of the next item in the functionĦĤs capability list.
** For the 80331, the next capability (MSI capability list) is located at off-set D0H.
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 D0H Next_ Item_ Pointer - This field provides an offset into the functionĦĤs configuration space pointing to the
** next item in the functionĦĤs capability list which in the 80331 is the MSI extended capabilities header.
***********************************************************************************
*/
#define ARCMSR_POWER_NEXT_ITEM_PTR_REG 0xC1 /*byte*/
/*
***********************************************************************************
** Power Management Capabilities Register - PM_CAP
**
** Power Management Capabilities bits adhere to the definitions in the PCI Bus Power Management
** Interface Specification, Revision 1.1. This register is a 16-bit read-only register which provides
** information on the capabilities of the ATU function related to power management.
** -----------------------------------------------------------------
** Bit Default Description
** 15:11 00000 2 PME_Support - This function is not capable of asserting the PME# signal in any state, since PME#
** is not supported by the 80331.
** 10 0 2 D2_Support - This bit is set to 0 2 indicating that the 80331 does not support the D2 Power Management State
** 9 1 2 D1_Support - This bit is set to 1 2 indicating that the 80331 supports the D1 Power Management State
** 8:6 000 2 Aux_Current - This field is set to 000 2 indicating that the 80331 has no current requirements for the
** 3.3Vaux signal as defined in the PCI Bus Power Management Interface Specification, Revision 1.1
** 5 0 2 DSI - This field is set to 0 2 meaning that this function requires a device specific initialization sequence
** following the transition to the D0 uninitialized state.
** 4 0 2 Reserved.
** 3 0 2 PME Clock - Since the 80331 does not support PME# signal generation this bit is cleared to 0 2 .
** 2:0 010 2 Version - Setting these bits to 010 2 means that this function complies with PCI Bus Power Management
** Interface Specification, Revision 1.1
***********************************************************************************
*/
#define ARCMSR_POWER_MANAGEMENT_CAPABILITY_REG 0xC2 /*word 0xC3,0xC2*/
/*
***********************************************************************************
** Power Management Control/Status Register - PM_CSR
**
** Power Management Control/Status bits adhere to the definitions in the PCI Bus Power
** Management Interface Specification, Revision 1.1. This 16-bit register is the control and status
** interface for the power management extended capability.
** -----------------------------------------------------------------
** Bit Default Description
** 15 0 2 PME_Status - This function is not capable of asserting the PME# signal in any state, since PME## is not
** supported by the 80331.
** 14:9 00H Reserved
** 8 0 2 PME_En - This bit is hardwired to read-only 0 2 since this function does not support PME#
** generation from any power state.
** 7:2 000000 2 Reserved
** 1:0 00 2 Power State - This 2-bit field is used both to determine the current power state
** of a function and to set the function into a new power state. The definition of the values is:
** 00 2 - D0
** 01 2 - D1
** 10 2 - D2 (Unsupported)
** 11 2 - D3 hot
** The 80331 supports only the D0 and D3 hot states.
**
***********************************************************************************
*/
#define ARCMSR_POWER_MANAGEMENT_CONTROL_STATUS_REG 0xC4 /*word 0xC5,0xC4*/
/*
***********************************************************************************
** PCI-X Capability Identifier Register - PX_CAPID
**
** The Capability Identifier Register bits adhere to the definitions in the PCI Local Bus Specification,
** Revision 2.3. This register in the PCI Extended Capability header identifies the type of Extended
** Capability contained in that header. In the case of the 80331, this is the PCI-X extended capability with
** an ID of 07H as defined by the PCI-X Addendum to the PCI Local Bus Specification, Revision 1.0a.
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 07H Cap_Id - This field with itsĦĤ 07H value identifies this item in the linked list of Extended Capability
** Headers as being the PCI-X capability registers.
***********************************************************************************
*/
#define ARCMSR_PCIX_CAPABILITY_IDENTIFIER_REG 0xE0 /*byte*/
/*
***********************************************************************************
** PCI-X Next Item Pointer Register - PX_NXTP
**
** The Next Item Pointer Register bits adhere to the definitions in the PCI Local Bus Specification,
** Revision 2.3. This register describes the location of the next item in the functionĦĤs capability list.
** By default, the PCI-X capability is the last capabilities list for the 80331, thus this register defaults
** to 00H.
** However, this register may be written to B8H prior to host configuration to include the VPD
** capability located at off-set B8H.
** Warning: Writing this register to any value other than 00H (default) or B8H is not supported and may
** produce unpredictable system behavior.
** In order to guarantee that this register is written prior to host configuration, the 80331 must be
** initialized at P_RST# assertion to Retry Type 0 configuration cycles (bit 2 of PCSR). Typically,
** the Intel XScale core would be enabled to boot immediately following P_RST# assertion in
** this case (bit 1 of PCSR), as well. Please see Table 125, Ħ§PCI Configuration and Status Register -
** PCSRĦ¨ on page 253 for more details on the 80331 initialization modes.
** -----------------------------------------------------------------
** Bit Default Description
** 07:00 00H Next_ Item_ Pointer - This field provides an offset into the functionĦĤs configuration space pointing to the
** next item in the functionĦĤs capability list. Since the PCI-X capabilities are the last in the linked list of
** extended capabilities in the 80331, the register is set to 00H.
** However, this field may be written prior to host configuration with B8H to extend the list to include the
** VPD extended capabilities header.
***********************************************************************************
*/
#define ARCMSR_PCIX_NEXT_ITEM_PTR_REG 0xE1 /*byte*/
/*
***********************************************************************************
** PCI-X Command Register - PX_CMD
**
** This register controls various modes and features of ATU and Message Unit when operating in the
** PCI-X mode.
** -----------------------------------------------------------------
** Bit Default Description
** 15:7 000000000 2 Reserved.
** 6:4 011 2 Maximum Outstanding Split Transactions - This register sets the maximum number of Split Transactions
** the device is permitted to have outstanding at one time.
** Register Maximum Outstanding
** 0 1
** 1 2
** 2 3
** 3 4
** 4 8
** 5 12
** 6 16
** 7 32
** 3:2 00 2 Maximum Memory Read Byte Count - This register sets the maximum byte count the device uses when
** initiating a Sequence with one of the burst memory read commands.
** Register Maximum Byte Count
** 0 512
** 1 1024
** 2 2048
** 3 4096
** 1 0 2
** Enable Relaxed Ordering - The 80331 does not set the relaxed ordering bit in the Requester Attributes
** of Transactions.
** 0 0 2 Data Parity Error Recovery Enable - The device driver sets this bit to enable the device to attempt to
** recover from data parity errors. When this bit is 0 and the device is in PCI-X mode, the device asserts
** SERR# (when enabled) whenever the Master Data Parity Error bit (Status register, bit 8) is set.
***********************************************************************************
*/
#define ARCMSR_PCIX_COMMAND_REG 0xE2 /*word 0xE3,0xE2*/
/*
***********************************************************************************
** PCI-X Status Register - PX_SR
**
** This register identifies the capabilities and current operating mode of ATU, DMAs and Message
** Unit when operating in the PCI-X mode.
** -----------------------------------------------------------------
** Bit Default Description
** 31:30 00 2 Reserved
** 29 0 2 Received Split Completion Error Message - This bit is set when the device receives a Split Completion
** Message with the Split Completion Error attribute bit set. Once set, this bit remains set until software
** writes a 1 to this location.
** 0=no Split Completion error message received.
** 1=a Split Completion error message has been received.
** 28:26 001 2 Designed Maximum Cumulative Read Size (DMCRS) - The value of this register depends on the setting
** of the Maximum Memory Read Byte Count field of the PCIXCMD register:
** DMCRS Max ADQs Maximum Memory Read Byte Count Register Setting
** 1 16 512 (Default)
** 2 32 1024
** 2 32 2048
** 2 32 4096
** 25:23 011 2 Designed Maximum Outstanding Split Transactions - The 80331 can have up to four outstanding split transactions.
** 22:21 01 2 Designed Maximum Memory Read Byte Count - The 80331 can generate memory reads with byte counts up
** to 1024 bytes.
** 20 1 2 80331 is a complex device.
** 19 0 2 Unexpected Split Completion - This bit is set when an unexpected Split Completion with this deviceĦĤs
** Requester ID is received. Once set, this bit remains set until software writes a 1 to this location.
** 0=no unexpected Split Completion has been received.
** 1=an unexpected Split Completion has been received.
** 18 0 2 Split Completion Discarded - This bit is set when the device discards a Split Completion because the
** requester would not accept it. See Section 5.4.4 of the PCI-X Addendum to the PCI Local Bus
** Specification, Revision 1.0a for details. Once set, this bit remains set until software writes a 1 to this
** location.
** 0=no Split Completion has been discarded.
** 1=a Split Completion has been discarded.
** NOTE: The 80331 does not set this bit since there is no Inbound address responding to Inbound Read
** Requests with Split Responses (Memory or Register) that has Ħ§read side effects.Ħ¨
** 17 1 2 80331 is a 133 MHz capable device.
** 16 1 2 or P_32BITPCI# 80331 with bridge enabled (BRG_EN=1) implements the ATU with a 64-bit interface on the secondary PCI bus,
** therefore this bit is always set.
** 80331 with no bridge and central resource disabled (BRG_EN=0, ARB_EN=0),
** use this bit to identify the add-in card to the system as 64-bit or 32-bit wide via a user-configurable strap (P_32BITPCI#).
** This strap, by default, identifies the add in card based on 80331 with bridge disabled
** as 64-bit unless the user attaches the appropriate pull-down resistor to the strap.
** 0=The bus is 32 bits wide.
** 1=The bus is 64 bits wide.
** 15:8 FFH Bus Number - This register is read for diagnostic purposes only. It indicates the number of the bus
** segment for the device containing this function. The function uses this number as part of its Requester
** ID and Completer ID. For all devices other than the source bridge, each time the function is addressed
** by a Configuration Write transaction, the function must update this register with the contents of AD[7::0]
** of the attribute phase of the Configuration Write, regardless of which register in the function is
** addressed by the transaction. The function is addressed by a Configuration Write transaction when all of
** the following are true:
** 1. The transaction uses a Configuration Write command.
** 2. IDSEL is asserted during the address phase.
** 3. AD[1::0] are 00b (Type 0 configuration transaction).
** 4. AD[10::08] of the configuration address contain the appropriate function number.
** 7:3 1FH Device Number - This register is read for diagnostic purposes only. It indicates the number of the device
** containing this function, i.e., the number in the Device Number field (AD[15::11]) of the address of a
** Type 0 configuration transaction that is assigned to the device containing this function by the connection
** of the system hardware. The system must assign a device number other than 00h (00h is reserved for
** the source bridge). The function uses this number as part of its Requester ID and Completer ID. Each
** time the function is addressed by a Configuration Write transaction, the device must update this register
** with the contents of AD[15::11] of the address phase of the Configuration Write, regardless of which
** register in the function is addressed by the transaction. The function is addressed by a Configuration
** Write transaction when all of the following are true:
** 1. The transaction uses a Configuration Write command.
** 2. IDSEL is asserted during the address phase.
** 3. AD[1::0] are 00b (Type 0 configuration transaction).
** 4. AD[10::08] of the configuration address contain the appropriate function number.
** 2:0 000 2 Function Number - This register is read for diagnostic purposes only. It indicates the number of this
** function; i.e., the number in the Function Number field (AD[10::08]) of the address of a Type 0
** configuration transaction to which this function responds. The function uses this number as part of its
** Requester ID and Completer ID.
**
**************************************************************************
*/
#define ARCMSR_PCIX_STATUS_REG 0xE4 /*dword 0xE7,0xE6,0xE5,0xE4*/
/*
**************************************************************************
** Inbound Read Transaction
** ========================================================================
** An inbound read transaction is initiated by a PCI initiator and is targeted at either 80331 local
** memory or a 80331 memory-mapped register space. The read transaction is propagated through
** the inbound transaction queue (ITQ) and read data is returned through the inbound read queue
** (IRQ).
** When operating in the conventional PCI mode, all inbound read transactions are processed as
** delayed read transactions. When operating in the PCI-X mode, all inbound read transactions are
** processed as split transactions. The ATUs PCI interface claims the read transaction and forwards
** the read request through to the internal bus and returns the read data to the PCI bus. Data flow for
** an inbound read transaction on the PCI bus is summarized in the following statements:
** ĦE The ATU claims the PCI read transaction when the PCI address is within the inbound
** translation window defined by ATU Inbound Base Address Register (and Inbound Upper Base
** Address Register during DACs) and Inbound Limit Register.
** ĦE When operating in the conventional PCI mode, when the ITQ is currently holding transaction
** information from a previous delayed read, the current transaction information is compared to
** the previous transaction information (based on the setting of the DRC Alias bit in
** Section 3.10.39, Ħ§ATU Configuration Register - ATUCRĦ¨ on page 252). When there is a
** match and the data is in the IRQ, return the data to the master on the PCI bus. When there is a
** match and the data is not available, a Retry is signaled with no other action taken. When there
** is not a match and when the ITQ has less than eight entries, capture the transaction
** information, signal a Retry and initiate a delayed transaction. When there is not a match and
** when the ITQ is full, then signal a Retry with no other action taken.
** ĦX When an address parity error is detected, the address parity response defined in
** Section 3.7 is used.
** ĦE When operating in the conventional PCI mode, once read data is driven onto the PCI bus from
** the IRQ, it continues until one of the following is true:
** ĦX The initiator completes the PCI transaction. When there is data left unread in the IRQ, the
** data is flushed.
** ĦX An internal bus Target Abort was detected. In this case, the QWORD associated with the
** Target Abort is never entered into the IRQ, and therefore is never returned.
** ĦX Target Abort or a Disconnect with Data is returned in response to the Internal Bus Error.
** ĦX The IRQ becomes empty. In this case, the PCI interface signals a Disconnect with data to
** the initiator on the last data word available.
** ĦE When operating in the PCI-X mode, when ITQ is not full, the PCI address, attribute and
** command are latched into the available ITQ and a Split Response Termination is signalled to
** the initiator.
** ĦE When operating in the PCI-X mode, when the transaction does not cross a 1024 byte aligned
** boundary, then the ATU waits until it receives the full byte count from the internal bus target
** before returning read data by generating the split completion transaction on the PCI-X bus.
** When the read requested crosses at least one 1024 byte boundary, then ATU completes the
** transfer by returning data in 1024 byte aligned chunks.
** ĦE When operating in the PCI-X mode, once a split completion transaction has started, it
** continues until one of the following is true:
** ĦX The requester (now the target) generates a Retry Termination, or a Disconnection at Next
** ADB (when the requester is a bridge)
** ĦX The byte count is satisfied.
** ĦX An internal bus Target Abort was detected. The ATU generates a Split Completion
** Message (message class=2h - completer error, and message index=81h - target abort) to
** inform the requester about the abnormal condition. The ITQ for this transaction is flushed.
** Refer to Section 3.7.1.
** ĦX An internal bus Master Abort was detected. The ATU generates a Split Completion
** Message (message class=2h - completer error, and message index=80h - Master abort) to
** inform the requester about the abnormal condition. The ITQ for this transaction is flushed.
** Refer to Section 3.7.1
** ĦE When operating in the conventional PCI mode, when the master inserts wait states on the PCI
** bus, the ATU PCI slave interface waits with no premature disconnects.
** ĦE When a data parity error occurs signified by PERR# asserted from the initiator, no action is
** taken by the target interface. Refer to Section 3.7.2.5.
** ĦE When operating in the conventional PCI mode, when the read on the internal bus is
** target-aborted, either a target-abort or a disconnect with data is signaled to the initiator. This is
** based on the ATU ECC Target Abort Enable bit (bit 0 of the ATUIMR for ATU). When set, a
** target abort is used, when clear, a disconnect is used.
** ĦE When operating in the PCI-X mode (with the exception of the MU queue ports at offsets 40h
** and 44h), when the transaction on the internal bus resulted in a target abort, the ATU generates
** a Split Completion Message (message class=2h - completer error, and message index=81h -
** internal bus target abort) to inform the requester about the abnormal condition. For the MU
** queue ports, the ATU returns either a target abort or a single data phase disconnect depending
** on the ATU ECC Target Abort Enable bit (bit 0 of the ATUIMR for ATU). The ITQ for this
** transaction is flushed. Refer to Section 3.7.1.
** ĦE When operating in the conventional PCI mode, when the transaction on the internal bus
** resulted in a master abort, the ATU returns a target abort to inform the requester about the
** abnormal condition. The ITQ for this transaction is flushed. Refer to Section 3.7.1
** ĦE When operating in the PCI-X mode, when the transaction on the internal bus resulted in a
** master abort, the ATU generates a Split Completion Message (message class=2h - completer
** error, and message index=80h - internal bus master abort) to inform the requester about the
** abnormal condition. The ITQ for this transaction is flushed. Refer to Section 3.7.1.
** ĦE When operating in the PCI-X mode, when the Split Completion transaction completes with
** either Master-Abort or Target-Abort, the requester is indicating a failure condition that
** prevents it from accepting the completion it requested. In this case, since the Split Request
** addresses a location that has no read side effects, the completer must discard the Split
** Completion and take no further action.
** The data flow for an inbound read transaction on the internal bus is summarized in the following
** statements:
** ĦE The ATU internal bus master interface requests the internal bus when a PCI address appears in
** an ITQ and transaction ordering has been satisfied. When operating in the PCI-X mode the
** ATU does not use the information provided by the Relax Ordering Attribute bit. That is, ATU
** always uses conventional PCI ordering rules.
** ĦE Once the internal bus is granted, the internal bus master interface drives the translated address
** onto the bus and wait for IB_DEVSEL#. When a Retry is signaled, the request is repeated.
** When a master abort occurs, the transaction is considered complete and a target abort is loaded
** into the associated IRQ for return to the PCI initiator (transaction is flushed once the PCI
** master has been delivered the target abort).
** ĦE Once the translated address is on the bus and the transaction has been accepted, the internal
** bus target starts returning data with the assertion of IB_TRDY#. Read data is continuously
** received by the IRQ until one of the following is true:
** ĦX The full byte count requested by the ATU read request is received. The ATU internal bus
** initiator interface performs a initiator completion in this case.
** ĦX When operating in the conventional PCI mode, a Target Abort is received on the internal
** bus from the internal bus target. In this case, the transaction is aborted and the PCI side is
** informed.
** ĦX When operating in the PCI-X mode, a Target Abort is received on the internal bus from
** the internal bus target. In this case, the transaction is aborted. The ATU generates a Split
** Completion Message (message class=2h - completer error, and message index=81h -
** target abort) on the PCI bus to inform the requester about the abnormal condition. The
** ITQ for this transaction is flushed.
** ĦX When operating in the conventional PCI mode, a single data phase disconnection is
** received from the internal bus target. When the data has not been received up to the next
** QWORD boundary, the ATU internal bus master interface attempts to reacquire the bus.
** When not, the bus returns to idle.
** ĦX When operating in the PCI-X mode, a single data phase disconnection is received from
** the internal bus target. The ATU IB initiator interface attempts to reacquire the bus to
** obtain remaining data.
** ĦX When operating in the conventional PCI mode, a disconnection at Next ADB is received
** from the internal bus target. The bus returns to idle.
** ĦX When operating in the PCI-X mode, a disconnection at Next ADB is received from the
** internal bus target. The ATU IB initiator interface attempts to reacquire the bus to obtain
** remaining data.
** To support PCI Local Bus Specification, Revision 2.0 devices, the ATU can be programmed to
** ignore the memory read command (Memory Read, Memory Read Line, and Memory Read
** Multiple) when trying to match the current inbound read transaction with data in a DRC queue
** which was read previously (DRC on target bus). When the Read Command Alias Bit in the
** ATUCR register is set, the ATU does not distinguish the read commands on transactions. For
** example, the ATU enqueues a DRR with a Memory Read Multiple command and performs the read
** on the internal bus. Some time later, a PCI master attempts a Memory Read with the same address
** as the previous Memory Read Multiple. When the Read Command Bit is set, the ATU would return
** the read data from the DRC queue and consider the Delayed Read transaction complete. When the
** Read Command bit in the ATUCR was clear, the ATU would not return data since the PCI read
** commands did not match, only the address.
**************************************************************************
*/
/*
**************************************************************************
** Inbound Write Transaction
**========================================================================
** An inbound write transaction is initiated by a PCI master and is targeted at either 80331 local
** memory or a 80331 memory-mapped register.
** Data flow for an inbound write transaction on the PCI bus is summarized as:
** ĦE The ATU claims the PCI write transaction when the PCI address is within the inbound
** translation window defined by the ATU Inbound Base Address Register (and Inbound Upper
** Base Address Register during DACs) and Inbound Limit Register.
** ĦE When the IWADQ has at least one address entry available and the IWQ has at least one buffer
** available, the address is captured and the first data phase is accepted.
** ĦE The PCI interface continues to accept write data until one of the following is true:
** ĦX The initiator performs a disconnect.
** ĦX The transaction crosses a buffer boundary.
** ĦE When an address parity error is detected during the address phase of the transaction, the
** address parity error mechanisms are used. Refer to Section 3.7.1 for details of the address
** parity error response.
** ĦE When operating in the PCI-X mode when an attribute parity error is detected, the attribute
** parity error mechanism described in Section 3.7.1 is used.
** ĦE When a data parity error is detected while accepting data, the slave interface sets the
** appropriate bits based on PCI specifications. No other action is taken. Refer to Section 3.7.2.6
** for details of the inbound write data parity error response.
** Once the PCI interface places a PCI address in the IWADQ, when IWQ has received data sufficient
** to cross a buffer boundary or the master disconnects on the PCI bus, the ATUs internal bus
** interface becomes aware of the inbound write. When there are additional write transactions ahead
** in the IWQ/IWADQ, the current transaction remains posted until ordering and priority have been
** satisfied (Refer to Section 3.5.3) and the transaction is attempted on the internal bus by the ATU
** internal master interface. The ATU does not insert target wait states nor do data merging on the PCI
** interface, when operating in the PCI mode.
** In the PCI-X mode memory writes are always executed as immediate transactions, while
** configuration write transactions are processed as split transactions. The ATU generates a Split
** Completion Message, (with Message class=0h - Write Completion Class and Message index =
** 00h - Write Completion Message) once a configuration write is successfully executed.
** Also, when operating in the PCI-X mode a write sequence may contain multiple write transactions.
** The ATU handles such transactions as independent transactions.
** Data flow for the inbound write transaction on the internal bus is summarized as:
** ĦE The ATU internal bus master requests the internal bus when IWADQ has at least one entry
** with associated data in the IWQ.
** ĦE When the internal bus is granted, the internal bus master interface initiates the write
** transaction by driving the translated address onto the internal bus. For details on inbound
** address translation.
** ĦE When IB_DEVSEL# is not returned, a master abort condition is signaled on the internal bus.
** The current transaction is flushed from the queue and SERR# may be asserted on the PCI
** interface.
** ĦE The ATU initiator interface asserts IB_REQ64# to attempt a 64-bit transfer. When
** IB_ACK64# is not returned, a 32-bit transfer is used. Transfers of less than 64-bits use the
** IB_C/BE[7:0]# to mask the bytes not written in the 64-bit data phase. Write data is transferred
** from the IWQ to the internal bus when data is available and the internal bus interface retains
** internal bus ownership.
** ĦE The internal bus interface stops transferring data from the current transaction to the internal
** bus when one of the following conditions becomes true:
** ĦX The internal bus initiator interface loses bus ownership. The ATU internal initiator
** terminates the transfer (initiator disconnection) at the next ADB (for the internal bus ADB
** is defined as a naturally aligned 128-byte boundary) and attempt to reacquire the bus to
** complete the delivery of remaining data using the same sequence ID but with the
** modified starting address and byte count.
** ĦX A Disconnect at Next ADB is signaled on the internal bus from the internal target. When
** the transaction in the IWQ completes at that ADB, the initiator returns to idle. When the
** transaction in the IWQ is not complete, the initiator attempts to reacquire the bus to
** complete the delivery of remaining data using the same sequence ID but with the
** modified starting address and byte count.
** ĦX A Single Data Phase Disconnect is signaled on the internal bus from the internal target.
** When the transaction in the IWQ needs only a single data phase, the master returns to idle.
** When the transaction in the IWQ is not complete, the initiator attempts to reacquire the
** bus to complete the delivery of remaining data using the same sequence ID but with the
** modified starting address and byte count.
** ĦX The data from the current transaction has completed (satisfaction of byte count). An
** initiator termination is performed and the bus returns to idle.
** ĦX A Master Abort is signaled on the internal bus. SERR# may be asserted on the PCI bus.
** Data is flushed from the IWQ.
*****************************************************************
*/
/*
**************************************************************************
** Inbound Read Completions Data Parity Errors
**========================================================================
** As an initiator, the ATU may encounter this error condition when operating in the PCI-X mode.
** When as the completer of a Split Read Request the ATU observes PERR# assertion during the split
** completion transaction, the ATU attempts to complete the transaction normally and no further
** action is taken.
**************************************************************************
*/
/*
**************************************************************************
** Inbound Configuration Write Completion Message Data Parity Errors
**========================================================================
** As an initiator, the ATU may encounter this error condition when operating in the PCI-X mode.
** When as the completer of a Configuration (Split) Write Request the ATU observes PERR#
** assertion during the split completion transaction, the ATU attempts to complete the transaction
** normally and no further action is taken.
**************************************************************************
*/
/*
**************************************************************************
** Inbound Read Request Data Parity Errors
**===================== Immediate Data Transfer ==========================
** As a target, the ATU may encounter this error when operating in the Conventional PCI or PCI-X modes.
** Inbound read data parity errors occur when read data delivered from the IRQ is detected as having
** bad parity by the initiator of the transaction who is receiving the data. The initiator may optionally
** report the error to the system by asserting PERR#. As a target device in this scenario, no action is
** required and no error bits are set.
**=====================Split Response Termination=========================
** As a target, the ATU may encounter this error when operating in the PCI-X mode.
** Inbound read data parity errors occur during the Split Response Termination. The initiator may
** optionally report the error to the system by asserting PERR#. As a target device in this scenario, no
** action is required and no error bits are set.
**************************************************************************
*/
/*
**************************************************************************
** Inbound Write Request Data Parity Errors
**========================================================================
** As a target, the ATU may encounter this error when operating in the Conventional or PCI-X modes.
** Data parity errors occurring during write operations received by the ATU may assert PERR# on
** the PCI Bus. When an error occurs, the ATU continues accepting data until the initiator of the write
** transaction completes or a queue fill condition is reached. Specifically, the following actions with
** the given constraints are taken by the ATU:
** ĦE PERR# is asserted two clocks cycles (three clock cycles when operating in the PCI-X mode)
** following the data phase in which the data parity error is detected on the bus. This is only
** done when the Parity Error Response bit in the ATUCMD is set.
** ĦE The Detected Parity Error bit in the ATUSR is set. When the ATU sets this bit, additional
** actions is taken:
** ĦX When the ATU Detected Parity Error Interrupt Mask bit in the ATUIMR is clear, set the
** Detected Parity Error bit in the ATUISR. When set, no action.
***************************************************************************
*/
/*
***************************************************************************
** Inbound Configuration Write Request
** =====================================================================
** As a target, the ATU may encounter this error when operating in the Conventional or PCI-X modes.
** ===============================================
** Conventional PCI Mode
** ===============================================
** To allow for correct data parity calculations for delayed write transactions, the ATU delays the
** assertion of STOP# (signalling a Retry) until PAR is driven by the master. A parity error during a
** delayed write transaction (inbound configuration write cycle) can occur in any of the following
** parts of the transactions:
** ĦE During the initial Delayed Write Request cycle on the PCI bus when the ATU latches the
** address/command and data for delayed delivery to the internal configuration register.
** ĦE During the Delayed Write Completion cycle on the PCI bus when the ATU delivers the status
** of the operation back to the original master.
** The 80331 ATU PCI interface has the following responses to a delayed write parity error for
** inbound transactions during Delayed Write Request cycles with the given constraints:
** ĦE When the Parity Error Response bit in the ATUCMD is set, the ATU asserts TRDY#
** (disconnects with data) and two clock cycles later asserts PERR# notifying the initiator of the
** parity error. The delayed write cycle is not enqueued and forwarded to the internal bus.
** When the Parity Error Response bit in the ATUCMD is cleared, the ATU retries the
** transaction by asserting STOP# and enqueues the Delayed Write Request cycle to be
** forwarded to the internal bus. PERR# is not asserted.
** ĦE The Detected Parity Error bit in the ATUSR is set. When the ATU sets this bit, additional
** actions is taken:
** ĦX When the ATU Detected Parity Error Interrupt Mask bit in the ATUIMR is clear, set the
** Detected Parity Error bit in the ATUISR. When set, no action.
** For the original write transaction to be completed, the initiator retries the transaction on the PCI
** bus and the ATU returns the status from the internal bus, completing the transaction.
** For the Delayed Write Completion transaction on the PCI bus where a data parity error occurs and
** therefore does not agree with the status being returned from the internal bus (i.e. status being
** returned is normal completion) the ATU performs the following actions with the given constraints:
** ĦE When the Parity Error Response Bit is set in the ATUCMD, the ATU asserts TRDY#
** (disconnects with data) and two clocks later asserts PERR#. The Delayed Completion cycle in
** the IDWQ remains since the data of retried command did not match the data within the queue.
** ĦE The Detected Parity Error bit in the ATUSR is set. When the ATU sets this bit, additional
** actions is taken:
** ĦX When the ATU Detected Parity Error Interrupt Mask bit in the ATUIMR is clear, set the
** Detected Parity Error bit in the ATUISR. When set, no action.
** ===================================================
** PCI-X Mode
** ===================================================
** Data parity errors occurring during configuration write operations received by the ATU may cause
** PERR# assertion and delivery of a Split Completion Error Message on the PCI Bus. When an error
** occurs, the ATU accepts the write data and complete with a Split Response Termination.
** Specifically, the following actions with the given constraints are then taken by the ATU:
** ĦE When the Parity Error Response bit in the ATUCMD is set, PERR# is asserted three clocks
** cycles following the Split Response Termination in which the data parity error is detected on
** the bus. When the ATU asserts PERR#, additional actions is taken:
** ĦX A Split Write Data Parity Error message (with message class=2h - completer error and
** message index=01h - Split Write Data Parity Error) is initiated by the ATU on the PCI bus
** that addresses the requester of the configuration write.
** ĦX When the Initiated Split Completion Error Message Interrupt Mask in the ATUIMR is
** clear, set the Initiated Split Completion Error Message bit in the ATUISR. When set, no
** action.
** ĦX The Split Write Request is not enqueued and forwarded to the internal bus.
** ĦE The Detected Parity Error bit in the ATUSR is set. When the ATU sets this bit, additional
** actions is taken:
** ĦX When the ATU Detected Parity Error Interrupt Mask bit in the ATUIMR is clear, set the
** Detected Parity Error bit in the ATUISR. When set, no action.
**
***************************************************************************
*/
/*
***************************************************************************
** Split Completion Messages
** =======================================================================
** As a target, the ATU may encounter this error when operating in the PCI-X mode.
** Data parity errors occurring during Split Completion Messages claimed by the ATU may assert
** PERR# (when enabled) or SERR# (when enabled) on the PCI Bus. When an error occurs, the
** ATU accepts the data and complete normally. Specifically, the following actions with the given
** constraints are taken by the ATU:
** ĦE PERR# is asserted three clocks cycles following the data phase in which the data parity error
** is detected on the bus. This is only done when the Parity Error Response bit in the ATUCMD
** is set. When the ATU asserts PERR#, additional actions is taken:
** ĦX The Master Parity Error bit in the ATUSR is set.
** ĦX When the ATU PCI Master Parity Error Interrupt Mask Bit in the ATUIMR is clear, set the
** PCI Master Parity Error bit in the ATUISR. When set, no action.
** ĦX When the SERR# Enable bit in the ATUCMD is set, and the Data Parity Error Recover
** Enable bit in the PCIXCMD register is clear, assert SERR#; otherwise no action is taken.
** When the ATU asserts SERR#, additional actions is taken:
** Set the SERR# Asserted bit in the ATUSR.
** When the ATU SERR# Asserted Interrupt Mask Bit in the ATUIMR is clear, set the
** SERR# Asserted bit in the ATUISR. When set, no action.
** When the ATU SERR# Detected Interrupt Enable Bit in the ATUCR is set, set the
** SERR# Detected bit in the ATUISR. When clear, no action.
** ĦE When the SCE bit (Split Completion Error -- bit 30 of the Completer Attributes) is set during
** the Attribute phase, the Received Split Completion Error Message bit in the PCIXSR is set.
** When the ATU sets this bit, additional actions is taken:
** ĦX When the ATU Received Split Completion Error Message Interrupt Mask bit in the
** ATUIMR is clear, set the Received Split Completion Error Message bit in the ATUISR.
** When set, no action.
** ĦE The Detected Parity Error bit in the ATUSR is set. When the ATU sets this bit, additional
** actions is taken:
** ĦX When the ATU Detected Parity Error Interrupt Mask bit in the ATUIMR is clear, set the
** Detected Parity Error bit in the ATUISR. When set, no action.
** ĦE The transaction associated with the Split Completion Message is discarded.
** ĦE When the discarded transaction was a read, a completion error message (with message
** class=2h - completer error and message index=82h - PCI bus read parity error) is generated on
** the internal bus of the 80331.
*****************************************************************************
*/
/*
******************************************************************************************************
** Messaging Unit (MU) of the Intel R 80331 I/O processor (80331)
** ==================================================================================================
** The Messaging Unit (MU) transfers data between the PCI system and the 80331
** notifies the respective system when new data arrives.
** The PCI window for messaging transactions is always the first 4 Kbytes of the inbound translation.
** window defined by:
** 1.Inbound ATU Base Address Register 0 (IABAR0)
** 2.Inbound ATU Limit Register 0 (IALR0)
** All of the Messaging Unit errors are reported in the same manner as ATU errors.
** Error conditions and status can be found in :
** 1.ATUSR
** 2.ATUISR
**====================================================================================================
** Mechanism Quantity Assert PCI Interrupt Signals Generate I/O Processor Interrupt
**----------------------------------------------------------------------------------------------------
** Message Registers 2 Inbound Optional Optional
** 2 Outbound
**----------------------------------------------------------------------------------------------------
** Doorbell Registers 1 Inbound Optional Optional
** 1 Outbound
**----------------------------------------------------------------------------------------------------
** Circular Queues 4 Circular Queues Under certain conditions Under certain conditions
**----------------------------------------------------------------------------------------------------
** Index Registers 1004 32-bit Memory Locations No Optional
**====================================================================================================
** PCI Memory Map: First 4 Kbytes of the ATU Inbound PCI Address Space
**====================================================================================================
** 0000H Reserved
** 0004H Reserved
** 0008H Reserved
** 000CH Reserved
**------------------------------------------------------------------------
** 0010H Inbound Message Register 0 ]
** 0014H Inbound Message Register 1 ]
** 0018H Outbound Message Register 0 ]
** 001CH Outbound Message Register 1 ] 4 Message Registers
**------------------------------------------------------------------------
** 0020H Inbound Doorbell Register ]
** 0024H Inbound Interrupt Status Register ]
** 0028H Inbound Interrupt Mask Register ]
** 002CH Outbound Doorbell Register ]
** 0030H Outbound Interrupt Status Register ]
** 0034H Outbound Interrupt Mask Register ] 2 Doorbell Registers and 4 Interrupt Registers
**------------------------------------------------------------------------
** 0038H Reserved
** 003CH Reserved
**------------------------------------------------------------------------
** 0040H Inbound Queue Port ]
** 0044H Outbound Queue Port ] 2 Queue Ports
**------------------------------------------------------------------------
** 0048H Reserved
** 004CH Reserved
**------------------------------------------------------------------------
** 0050H ]
** : ]
** : Intel Xscale Microarchitecture Local Memory ]
** : ]
** 0FFCH ] 1004 Index Registers
*******************************************************************************
*/
/*
*****************************************************************************
** Theory of MU Operation
*****************************************************************************
**--------------------
** inbound_msgaddr0:
** inbound_msgaddr1:
** outbound_msgaddr0:
** outbound_msgaddr1:
** . The MU has four independent messaging mechanisms.
** There are four Message Registers that are similar to a combination of mailbox and doorbell registers.
** Each holds a 32-bit value and generates an interrupt when written.
**--------------------
** inbound_doorbell:
** outbound_doorbell:
** . The two Doorbell Registers support software interrupts.
** When a bit is set in a Doorbell Register, an interrupt is generated.
**--------------------
** inbound_queueport:
** outbound_queueport:
**
**
** . The Circular Queues support a message passing scheme that uses 4 circular queues.
** The 4 circular queues are implemented in 80331 local memory.
** Two queues are used for inbound messages and two are used for outbound messages.
** Interrupts may be generated when the queue is written.
**--------------------
** local_buffer 0x0050 ....0x0FFF
** . The Index Registers use a portion of the 80331 local memory to implement a large set of message registers.
** When one of the Index Registers is written, an interrupt is generated and the address of the register written is captured.
** Interrupt status for all interrupts is recorded in the Inbound Interrupt Status Register and the Outbound Interrupt Status Register.
** Each interrupt generated by the Messaging Unit can be masked.
**--------------------
** . Multi-DWORD PCI burst accesses are not supported by the Messaging Unit,
** with the exception of Multi-DWORD reads to the index registers.
** In Conventional mode: the MU terminates Multi-DWORD PCI transactions
** (other than index register reads) with a disconnect at the next Qword boundary, with the exception of queue ports.
** In PCI-X mode : the MU terminates a Multi-DWORD PCI read transaction with a Split Response
** and the data is returned through split completion transaction(s).
** however, when the burst request crosses into or through the range of offsets 40h to 4Ch
** (e.g., this includes the queue ports) the transaction is signaled target-abort immediately on the PCI bus.
** In PCI-X mode, Multi-DWORD PCI writes is signaled a Single-Data-Phase Disconnect
** which means that no data beyond the first Qword (Dword when the MU does not assert P_ACK64#) is written.
**--------------------
** . All registers needed to configure and control the Messaging Unit are memory-mapped registers.
** The MU uses the first 4 Kbytes of the inbound translation window in the Address Translation Unit (ATU).
** This PCI address window is used for PCI transactions that access the 80331 local memory.
** The PCI address of the inbound translation window is contained in the Inbound ATU Base Address Register.
**--------------------
** . From the PCI perspective, the Messaging Unit is part of the Address Translation Unit.
** The Messaging Unit uses the PCI configuration registers of the ATU for control and status information.
** The Messaging Unit must observe all PCI control bits in the ATU Command Register and ATU Configuration Register.
** The Messaging Unit reports all PCI errors in the ATU Status Register.
**--------------------
** . Parts of the Messaging Unit can be accessed as a 64-bit PCI device.
** The register interface, message registers, doorbell registers,
** and index registers returns a P_ACK64# in response to a P_REQ64# on the PCI interface.
** Up to 1 Qword of data can be read or written per transaction (except Index Register reads).
** The Inbound and Outbound Queue Ports are always 32-bit addresses and the MU does not assert P_ACK64# to offsets 40H and 44H.
**************************************************************************
*/
/*
**************************************************************************
** Message Registers
** ==============================
** . Messages can be sent and received by the 80331 through the use of the Message Registers.
** . When written, the message registers may cause an interrupt to be generated to either the Intel XScale core or the host processor.
** . Inbound messages are sent by the host processor and received by the 80331.
** Outbound messages are sent by the 80331 and received by the host processor.
** . The interrupt status for outbound messages is recorded in the Outbound Interrupt Status Register.
** Interrupt status for inbound messages is recorded in the Inbound Interrupt Status Register.
**
** Inbound Messages:
** -----------------
** . When an inbound message register is written by an external PCI agent, an interrupt may be generated to the Intel XScale core.
** . The interrupt may be masked by the mask bits in the Inbound Interrupt Mask Register.
** . The Intel XScale core interrupt is recorded in the Inbound Interrupt Status Register.
** The interrupt causes the Inbound Message Interrupt bit to be set in the Inbound Interrupt Status Register.
** This is a Read/Clear bit that is set by the MU hardware and cleared by software.
** The interrupt is cleared when the Intel XScale core writes a value of
** 1 to the Inbound Message Interrupt bit in the Inbound Interrupt Status Register.
** ------------------------------------------------------------------------
** Inbound Message Register - IMRx
**
** . There are two Inbound Message Registers: IMR0 and IMR1.
** . When the IMR register is written, an interrupt to the Intel XScale core may be generated.
** The interrupt is recorded in the Inbound Interrupt Status Register and may be masked
** by the Inbound Message Interrupt Mask bit in the Inbound Interrupt Mask Register.
** -----------------------------------------------------------------
** Bit Default Description
** 31:00 0000 0000H Inbound Message - This is a 32-bit message written by an external PCI agent.
** When written, an interrupt to the Intel XScale core may be generated.
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_MESSAGE_REG0 0x10 /*dword 0x13,0x12,0x11,0x10*/
#define ARCMSR_MU_INBOUND_MESSAGE_REG1 0x14 /*dword 0x17,0x16,0x15,0x14*/
/*
**************************************************************************
** Outbound Message Register - OMRx
** --------------------------------
** There are two Outbound Message Registers: OMR0 and OMR1. When the OMR register is
** written, a PCI interrupt may be generated. The interrupt is recorded in the Outbound Interrupt
** Status Register and may be masked by the Outbound Message Interrupt Mask bit in the Outbound
** Interrupt Mask Register.
**
** Bit Default Description
** 31:00 00000000H Outbound Message - This is 32-bit message written by the Intel XScale core. When written, an
** interrupt may be generated on the PCI Interrupt pin determined by the ATU Interrupt Pin Register.
**************************************************************************
*/
#define ARCMSR_MU_OUTBOUND_MESSAGE_REG0 0x18 /*dword 0x1B,0x1A,0x19,0x18*/
#define ARCMSR_MU_OUTBOUND_MESSAGE_REG1 0x1C /*dword 0x1F,0x1E,0x1D,0x1C*/
/*
**************************************************************************
** Doorbell Registers
** ==============================
** There are two Doorbell Registers:
** Inbound Doorbell Register
** Outbound Doorbell Register
** The Inbound Doorbell Register allows external PCI agents to generate interrupts to the Intel R XScale core.
** The Outbound Doorbell Register allows the Intel R XScale core to generate a PCI interrupt.
** Both Doorbell Registers may generate interrupts whenever a bit in the register is set.
**
** Inbound Doorbells:
** ------------------
** . When the Inbound Doorbell Register is written by an external PCI agent, an interrupt may be generated to the Intel R XScale core.
** An interrupt is generated when any of the bits in the doorbell register is written to a value of 1.
** Writing a value of 0 to any bit does not change the value of that bit and does not cause an interrupt to be generated.
** . Once a bit is set in the Inbound Doorbell Register, it cannot be cleared by any external PCI agent.
** The interrupt is recorded in the Inbound Interrupt Status Register.
** . The interrupt may be masked by the Inbound Doorbell Interrupt mask bit in the Inbound Interrupt Mask Register.
** When the mask bit is set for a particular bit, no interrupt is generated for that bit.
** The Inbound Interrupt Mask Register affects only the generation of the normal messaging unit interrupt
** and not the values written to the Inbound Doorbell Register.
** One bit in the Inbound Doorbell Register is reserved for an Error Doorbell interrupt.
** . The interrupt is cleared when the Intel R XScale core writes a value of 1 to the bits in the Inbound Doorbell Register that are set.
** Writing a value of 0 to any bit does not change the value of that bit and does not clear the interrupt.
** ------------------------------------------------------------------------
** Inbound Doorbell Register - IDR
**
** . The Inbound Doorbell Register (IDR) is used to generate interrupts to the Intel XScale core.
** . Bit 31 is reserved for generating an Error Doorbell interrupt.
** When bit 31 is set, an Error interrupt may be generated to the Intel XScale core.
** All other bits, when set, cause the Normal Messaging Unit interrupt line of the Intel XScale core to be asserted,
** when the interrupt is not masked by the Inbound Doorbell Interrupt Mask bit in the Inbound Interrupt Mask Register.
** The bits in the IDR register can only be set by an external PCI agent and can only be cleared by the Intel XScale core.
** ------------------------------------------------------------------------
** Bit Default Description
** 31 0 2 Error Interrupt - Generate an Error Interrupt to the Intel XScale core.
** 30:00 00000000H Normal Interrupt - When any bit is set, generate a Normal interrupt to the Intel XScale core.
** When all bits are clear, do not generate a Normal Interrupt.
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_DOORBELL_REG 0x20 /*dword 0x23,0x22,0x21,0x20*/
/*
**************************************************************************
** Inbound Interrupt Status Register - IISR
**
** . The Inbound Interrupt Status Register (IISR) contains hardware interrupt status.
** It records the status of Intel XScale core interrupts generated by the Message Registers, Doorbell Registers, and the Circular Queues.
** All interrupts are routed to the Normal Messaging Unit interrupt input of the Intel XScale core,
** except for the Error Doorbell Interrupt and the Outbound Free Queue Full interrupt;
** these two are routed to the Messaging Unit Error interrupt input.
** The generation of interrupts recorded in the Inbound Interrupt Status Register
** may be masked by setting the corresponding bit in the Inbound Interrupt Mask Register.
** Some of the bits in this register are Read Only.
** For those bits, the interrupt must be cleared through another register.
**
** Bit Default Description
** 31:07 0000000H 0 2 Reserved
** 06 0 2 Index Register Interrupt - This bit is set by the MU hardware
** when an Index Register has been written after a PCI transaction.
** 05 0 2 Outbound Free Queue Full Interrupt - This bit is set
** when the Outbound Free Head Pointer becomes equal to the Tail Pointer and the queue is full.
** An Error interrupt is generated for this condition.
** 04 0 2 Inbound Post Queue Interrupt - This bit is set by the MU hardware when the Inbound Post Queue has been written.
** Once cleared, an interrupt does NOT be generated
** when the head and tail pointers remain unequal (i.e. queue status is Not Empty).
** Therefore, when software leaves any unprocessed messages in the post queue when the interrupt is cleared,
** software must retain the information that the Inbound Post queue status is not empty.
** NOTE: This interrupt is provided with dedicated support in the 80331 Interrupt Controller.
** 03 0 2 Error Doorbell Interrupt - This bit is set when the Error Interrupt of the Inbound Doorbell Register is set.
** To clear this bit (and the interrupt), the Error Interrupt bit of the Inbound Doorbell Register must be clear.
** 02 0 2 Inbound Doorbell Interrupt - This bit is set when at least one
** Normal Interrupt bit in the Inbound Doorbell Register is set.
** To clear this bit (and the interrupt), the Normal Interrupt bits in the Inbound Doorbell Register must all be clear.
** 01 0 2 Inbound Message 1 Interrupt - This bit is set by the MU hardware when the Inbound Message 1 Register has been written.
** 00 0 2 Inbound Message 0 Interrupt - This bit is set by the MU hardware when the Inbound Message 0 Register has been written.
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_INTERRUPT_STATUS_REG 0x24 /*dword 0x27,0x26,0x25,0x24*/
#define ARCMSR_MU_INBOUND_INDEX_INT 0x40
#define ARCMSR_MU_INBOUND_QUEUEFULL_INT 0x20
#define ARCMSR_MU_INBOUND_POSTQUEUE_INT 0x10
#define ARCMSR_MU_INBOUND_ERROR_DOORBELL_INT 0x08
#define ARCMSR_MU_INBOUND_DOORBELL_INT 0x04
#define ARCMSR_MU_INBOUND_MESSAGE1_INT 0x02
#define ARCMSR_MU_INBOUND_MESSAGE0_INT 0x01
/*
**************************************************************************
** Inbound Interrupt Mask Register - IIMR
**
** . The Inbound Interrupt Mask Register (IIMR) provides the ability to mask Intel XScale core interrupts generated by the Messaging Unit.
** Each bit in the Mask register corresponds to an interrupt bit in the Inbound Interrupt Status Register.
** Setting or clearing bits in this register does not affect the Inbound Interrupt Status Register.
** They only affect the generation of the Intel XScale core interrupt.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:07 000000H 0 2 Reserved
** 06 0 2 Index Register Interrupt Mask - When set, this bit masks the interrupt generated by the MU hardware
** when an Index Register has been written after a PCI transaction.
** 05 0 2 Outbound Free Queue Full Interrupt Mask - When set, this bit masks the Error interrupt generated
** when the Outbound Free Head Pointer becomes equal to the Tail Pointer and the queue is full.
** 04 0 2 Inbound Post Queue Interrupt Mask - When set, this bit masks the interrupt generated
** by the MU hardware when the Inbound Post Queue has been written.
** 03 0 2 Error Doorbell Interrupt Mask - When set, this bit masks the Error Interrupt
** when the Error Interrupt bit of the Inbound Doorbell Register is set.
** 02 0 2 Inbound Doorbell Interrupt Mask - When set, this bit masks the interrupt generated
** when at least one Normal Interrupt bit in the Inbound Doorbell Register is set.
** 01 0 2 Inbound Message 1 Interrupt Mask - When set, this bit masks the Inbound Message 1
** Interrupt generated by a write to the Inbound Message 1 Register.
** 00 0 2 Inbound Message 0 Interrupt Mask - When set,
** this bit masks the Inbound Message 0 Interrupt generated by a write to the Inbound Message 0 Register.
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_INTERRUPT_MASK_REG 0x28 /*dword 0x2B,0x2A,0x29,0x28*/
#define ARCMSR_MU_INBOUND_INDEX_INTMASKENABLE 0x40
#define ARCMSR_MU_INBOUND_QUEUEFULL_INTMASKENABLE 0x20
#define ARCMSR_MU_INBOUND_POSTQUEUE_INTMASKENABLE 0x10
#define ARCMSR_MU_INBOUND_DOORBELL_ERROR_INTMASKENABLE 0x08
#define ARCMSR_MU_INBOUND_DOORBELL_INTMASKENABLE 0x04
#define ARCMSR_MU_INBOUND_MESSAGE1_INTMASKENABLE 0x02
#define ARCMSR_MU_INBOUND_MESSAGE0_INTMASKENABLE 0x01
/*
**************************************************************************
** Outbound Doorbell Register - ODR
**
** The Outbound Doorbell Register (ODR) allows software interrupt generation. It allows the Intel
** XScale core to generate PCI interrupts to the host processor by writing to this register. The
** generation of PCI interrupts through the Outbound Doorbell Register may be masked by setting the
** Outbound Doorbell Interrupt Mask bit in the Outbound Interrupt Mask Register.
** The Software Interrupt bits in this register can only be set by the Intel XScale core and can only
** be cleared by an external PCI agent.
** ----------------------------------------------------------------------
** Bit Default Description
** 31 0 2 Reserved
** 30 0 2 Reserved.
** 29 0 2 Reserved
** 28 0000 0000H PCI Interrupt - When set, this bit causes the P_INTC# interrupt output
** (P_INTA# with BRG_EN and ARB_EN straps low)
** signal to be asserted or a Message-signaled Interrupt is generated (when enabled).
** When this bit is cleared, the P_INTC# interrupt output
** (P_INTA# with BRG_EN and ARB_EN straps low)
** signal is deasserted.
** 27:00 000 0000H Software Interrupts - When any bit is set the P_INTC# interrupt output
** (P_INTA# with BRG_EN and ARB_EN straps low)
** signal is asserted or a Message-signaled Interrupt is generated (when enabled).
** When all bits are cleared, the P_INTC# interrupt output (P_INTA# with BRG_EN and ARB_EN straps low)
** signal is deasserted.
**************************************************************************
*/
#define ARCMSR_MU_OUTBOUND_DOORBELL_REG 0x2C /*dword 0x2F,0x2E,0x2D,0x2C*/
/*
**************************************************************************
** Outbound Interrupt Status Register - OISR
**
** The Outbound Interrupt Status Register (OISR) contains hardware interrupt status. It records the
** status of PCI interrupts generated by the Message Registers, Doorbell Registers, and the Circular
** Queues. The generation of PCI interrupts recorded in the Outbound Interrupt Status Register may
** be masked by setting the corresponding bit in the Outbound Interrupt Mask Register. Some of the
** bits in this register are Read Only. For those bits, the interrupt must be cleared through another
** register.
** ----------------------------------------------------------------------
** Bit Default Description
** 31:05 000000H 000 2 Reserved
** 04 0 2 PCI Interrupt - This bit is set when the PCI Interrupt bit (bit 28) is set in the Outbound Doorbell Register.
** To clear this bit (and the interrupt), the PCI Interrupt bit must be cleared.
** 03 0 2 Outbound Post Queue Interrupt - This bit is set when data in the prefetch buffer is valid. This bit is
** cleared when any prefetch data has been read from the Outbound Queue Port.
** 02 0 2 Outbound Doorbell Interrupt - This bit is set when at least one Software Interrupt bit in the Outbound
** Doorbell Register is set. To clear this bit (and the interrupt), the Software Interrupt bits in the Outbound
** Doorbell Register must all be clear.
** 01 0 2 Outbound Message 1 Interrupt - This bit is set by the MU when the Outbound Message 1 Register is
** written. Clearing this bit clears the interrupt.
** 00 0 2 Outbound Message 0 Interrupt - This bit is set by the MU when the Outbound Message 0 Register is
** written. Clearing this bit clears the interrupt.
**************************************************************************
*/
#define ARCMSR_MU_OUTBOUND_INTERRUPT_STATUS_REG 0x30 /*dword 0x33,0x32,0x31,0x30*/
#define ARCMSR_MU_OUTBOUND_PCI_INT 0x10
#define ARCMSR_MU_OUTBOUND_POSTQUEUE_INT 0x08
#define ARCMSR_MU_OUTBOUND_DOORBELL_INT 0x04
#define ARCMSR_MU_OUTBOUND_MESSAGE1_INT 0x02
#define ARCMSR_MU_OUTBOUND_MESSAGE0_INT 0x01
/*
**************************************************************************
** Outbound Interrupt Mask Register - OIMR
** The Outbound Interrupt Mask Register (OIMR) provides the ability to mask outbound PCI
** interrupts generated by the Messaging Unit. Each bit in the mask register corresponds to a
** hardware interrupt bit in the Outbound Interrupt Status Register. When the bit is set, the PCI
** interrupt is not generated. When the bit is clear, the interrupt is allowed to be generated.
** Setting or clearing bits in this register does not affect the Outbound Interrupt Status Register. They
** only affect the generation of the PCI interrupt.
** ----------------------------------------------------------------------
** Bit Default Description
** 31:05 000000H Reserved
** 04 0 2 PCI Interrupt Mask - When set, this bit masks the interrupt generation when the PCI Interrupt bit (bit 28)
** in the Outbound Doorbell Register is set.
** 03 0 2 Outbound Post Queue Interrupt Mask - When set, this bit masks the interrupt generated when data in
** the prefetch buffer is valid.
** 02 0 2 Outbound Doorbell Interrupt Mask - When set, this bit masks the interrupt generated by the Outbound
** Doorbell Register.
** 01 0 2 Outbound Message 1 Interrupt Mask - When set, this bit masks the Outbound Message 1 Interrupt
** generated by a write to the Outbound Message 1 Register.
** 00 0 2 Outbound Message 0 Interrupt Mask- When set, this bit masks the Outbound Message 0 Interrupt
** generated by a write to the Outbound Message 0 Register.
**************************************************************************
*/
#define ARCMSR_MU_OUTBOUND_INTERRUPT_MASK_REG 0x34 /*dword 0x37,0x36,0x35,0x34*/
#define ARCMSR_MU_OUTBOUND_PCI_INTMASKENABLE 0x10
#define ARCMSR_MU_OUTBOUND_POSTQUEUE_INTMASKENABLE 0x08
#define ARCMSR_MU_OUTBOUND_DOORBELL_INTMASKENABLE 0x04
#define ARCMSR_MU_OUTBOUND_MESSAGE1_INTMASKENABLE 0x02
#define ARCMSR_MU_OUTBOUND_MESSAGE0_INTMASKENABLE 0x01
#define ARCMSR_MU_OUTBOUND_ALL_INTMASKENABLE 0x1F
/*
**************************************************************************
**
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_QUEUE_PORT_REG 0x40 /*dword 0x43,0x42,0x41,0x40*/
#define ARCMSR_MU_OUTBOUND_QUEUE_PORT_REG 0x44 /*dword 0x47,0x46,0x45,0x44*/
/*
**************************************************************************
** Circular Queues
** ======================================================================
** The MU implements four circular queues. There are 2 inbound queues and 2 outbound queues. In
** this case, inbound and outbound refer to the direction of the flow of posted messages.
** Inbound messages are either:
** ĦE posted messages by other processors for the Intel XScale core to process or
** ĦE free (or empty) messages that can be reused by other processors.
** Outbound messages are either:
** ĦE posted messages by the Intel XScale core for other processors to process or
** ĦE free (or empty) messages that can be reused by the Intel XScale core.
** Therefore, free inbound messages flow away from the 80331 and free outbound messages flow toward the 80331.
** The four Circular Queues are used to pass messages in the following manner.
** . The two inbound queues are used to handle inbound messages
** and the two outbound queues are used to handle outbound messages.
** . One of the inbound queues is designated the Free queue and it contains inbound free messages.
** The other inbound queue is designated the Post queue and it contains inbound posted messages.
** Similarly, one of the outbound queues is designated the Free queue and the other outbound queue is designated the Post queue.
**
** =============================================================================================================
** Circular Queue Summary
** _____________________________________________________________________________________________________________
** | Queue Name | Purpose | Action on PCI Interface|
** |______________________|____________________________________________________________|_________________________|
** |Inbound Post Queue | Queue for inbound messages from other processors | Written |
** | | waiting to be processed by the 80331 | |
** |Inbound Free Queue | Queue for empty inbound messages from the 80331 | Read |
** | | available for use by other processors | |
** |Outbound Post Queue | Queue for outbound messages from the 80331 | Read |
** | | that are being posted to the other processors | |
** |Outbound Free Queue | Queue for empty outbound messages from other processors | Written |
** | | available for use by the 80331 | |
** |______________________|____________________________________________________________|_________________________|
**
** . The two inbound queues allow the host processor to post inbound messages for the 80331 in one
** queue and to receive free messages returning from the 80331.
** The host processor posts inbound messages,
** the Intel XScale core receives the posted message and when it is finished with the message,
** places it back on the inbound free queue for reuse by the host processor.
**
** The circular queues are accessed by external PCI agents through two port locations in the PCI
** address space:
** Inbound Queue Port
** and Outbound Queue Port.
** The Inbound Queue Port is used by external PCI agents to read the Inbound Free Queue and write the Inbound Post Queue.
** The Outbound Queue Port is used by external PCI agents to read the Outbound Post Queue and write the Outbound Free Queue.
** Note that a PCI transaction to the inbound or outbound queue ports with null byte enables (P_C/BE[3:0]#=1111 2 )
** does not cause the MU hardware to increment the queue pointers.
** This is treated as when the PCI transaction did not occur.
** The Inbound and Outbound Queue Ports never respond with P_ACK64# on the PCI interface.
** ======================================================================================
** Overview of Circular Queue Operation
** ======================================================================================
** . The data storage for the circular queues must be provided by the 80331 local memory.
** . The base address of the circular queues is contained in the Queue Base Address Register.
** Each entry in the queue is a 32-bit data value.
** . Each read from or write to the queue may access only one queue entry.
** . Multi-DWORD accesses to the circular queues are not allowed.
** Sub-DWORD accesses are promoted to DWORD accesses.
** . Each circular queue has a head pointer and a tail pointer.
** The pointers are offsets from the Queue Base Address.
** . Writes to a queue occur at the head of the queue and reads occur from the tail.
** The head and tail pointers are incremented by either the Intel XScale core or the Messaging Unit hardware.
** Which unit maintains the pointer is determined by the writer of the queue.
** More details about the pointers are given in the queue descriptions below.
** The pointers are incremented after the queue access.
** Both pointers wrap around to the first address of the circular queue when they reach the circular queue size.
**
** Messaging Unit...
**
** The Messaging Unit generates an interrupt to the Intel XScale core or generate a PCI interrupt under certain conditions.
** . In general, when a Post queue is written, an interrupt is generated to notify the receiver that a message was posted.
** The size of each circular queue can range from 4K entries (16 Kbytes) to 64K entries (256 Kbytes).
** . All four queues must be the same size and may be contiguous.
** Therefore, the total amount of local memory needed by the circular queues ranges from 64 Kbytes to 1 Mbytes.
** The Queue size is determined by the Queue Size field in the MU Configuration Register.
** . There is one base address for all four queues.
** It is stored in the Queue Base Address Register (QBAR).
** The starting addresses of each queue is based on the Queue Base Address and the Queue Size field.
** here shows an example of how the circular queues should be set up based on the
** Intelligent I/O (I 2 O) Architecture Specification.
** Other ordering of the circular queues is possible.
**
** Queue Starting Address
** Inbound Free Queue QBAR
** Inbound Post Queue QBAR + Queue Size
** Outbound Post Queue QBAR + 2 * Queue Size
** Outbound Free Queue QBAR + 3 * Queue Size
** ===================================================================================
** Inbound Post Queue
** ------------------
** The Inbound Post Queue holds posted messages placed there by other processors for the Intel XScale core to process.
** This queue is read from the queue tail by the Intel XScale core. It is written to the queue head by external PCI agents.
** The tail pointer is maintained by the Intel XScale core. The head pointer is maintained by the MU hardware.
** For a PCI write transaction that accesses the Inbound Queue Port,
** the MU writes the data to the local memory location address in the Inbound Post Head Pointer Register.
** When the data written to the Inbound Queue Port is written to local memory, the MU hardware increments the Inbound Post Head Pointer Register.
** An Intel XScale core interrupt may be generated when the Inbound Post Queue is written.
** The Inbound Post Queue Interrupt bit in the Inbound Interrupt Status Register indicates the interrupt status.
** The interrupt is cleared when the Inbound Post Queue Interrupt bit is cleared.
** The interrupt can be masked by the Inbound Interrupt Mask Register.
** Software must be aware of the state of the Inbound Post Queue Interrupt Mask bit to guarantee
** that the full condition is recognized by the core processor.
** In addition, to guarantee that the queue does not get overwritten,
** software must process messages from the tail of the queue before incrementing the tail pointer and clearing this interrupt.
** Once cleared, an interrupt is NOT generated when the head and tail pointers remain unequal (i.e. queue status is Not Empty).
** Only a new message posting the in the inbound queue generates a new interrupt.
** Therefore, when software leaves any unprocessed messages in the post queue when the interrupt is cleared,
** software must retain the information that the Inbound Post queue status.
** From the time that the PCI write transaction is received until the data is written
** in local memory and the Inbound Post Head Pointer Register is incremented,
** any PCI transaction that attempts to access the Inbound Post Queue Port is signalled a Retry.
** The Intel XScale core may read messages from the Inbound Post Queue
** by reading the data from the local memory location pointed to by the Inbound Post Tail Pointer Register.
** The Intel XScale core must then increment the Inbound Post Tail Pointer Register.
** When the Inbound Post Queue is full (head and tail pointers are equal and the head pointer was last updated by hardware),
** the hardware retries any PCI writes until a slot in the queue becomes available.
** A slot in the post queue becomes available by the Intel XScale core incrementing the tail pointer.
** ===================================================================================
** Inbound Free Queue
** ------------------
** The Inbound Free Queue holds free inbound messages placed there by the Intel XScale core for other processors to use.
** This queue is read from the queue tail by external PCI agents.
** It is written to the queue head by the Intel XScale core.
** The tail pointer is maintained by the MU hardware.
** The head pointer is maintained by the Intel XScale core.
** For a PCI read transaction that accesses the Inbound Queue Port,
** the MU attempts to read the data at the local memory address in the Inbound Free Tail Pointer.
** When the queue is not empty (head and tail pointers are not equal)
** or full (head and tail pointers are equal but the head pointer was last written by software), the data is returned.
** When the queue is empty (head and tail pointers are equal and the head pointer was last updated by hardware),
** the value of -1 (FFFF.FFFFH) is returned.
** When the queue was not empty and the MU succeeded in returning the data at the tail,
** the MU hardware must increment the value in the Inbound Free Tail Pointer Register.
** To reduce latency for the PCI read access, the MU implements a prefetch mechanism to anticipate accesses to the Inbound Free Queue.
** The MU hardware prefetches the data at the tail of the Inbound Free Queue and load it into an internal prefetch register.
** When the PCI read access occurs, the data is read directly from the prefetch register.
** The prefetch mechanism loads a value of -1 (FFFF.FFFFH) into the prefetch register
** when the head and tail pointers are equal and the queue is empty.
** In order to update the prefetch register when messages are added to the queue and it becomes non-empty,
** the prefetch mechanism automatically starts a prefetch when the prefetch register contains FFFF.FFFFH
** and the Inbound Free Head Pointer Register is written.
** The Intel XScale core needs to update the Inbound Free Head Pointer Register when it adds messages to the queue.
** A prefetch must appear atomic from the perspective of the external PCI agent.
** When a prefetch is started, any PCI transaction that attempts to access the Inbound Free Queue is signalled a Retry until the prefetch is completed.
** The Intel XScale core may place messages in the Inbound Free Queue by writing the data to the
** local memory location pointed to by the Inbound Free Head Pointer Register.
** The processor must then increment the Inbound Free Head Pointer Register.
** ==================================================================================
** Outbound Post Queue
** -------------------
** The Outbound Post Queue holds outbound posted messages placed there by the Intel XScale
** core for other processors to process. This queue is read from the queue tail by external PCI agents.
** It is written to the queue head by the Intel XScale core. The tail pointer is maintained by the
** MU hardware. The head pointer is maintained by the Intel XScale core.
** For a PCI read transaction that accesses the Outbound Queue Port, the MU attempts to read the
** data at the local memory address in the Outbound Post Tail Pointer Register. When the queue is not
** empty (head and tail pointers are not equal) or full (head and tail pointers are equal but the head
** pointer was last written by software), the data is returned. When the queue is empty (head and tail
** pointers are equal and the head pointer was last updated by hardware), the value of -1
** (FFFF.FFFFH) is returned. When the queue was not empty and the MU succeeded in returning the
** data at the tail, the MU hardware must increment the value in the Outbound Post Tail Pointer
** Register.
** To reduce latency for the PCI read access, the MU implements a prefetch mechanism to anticipate
** accesses to the Outbound Post Queue. The MU hardware prefetches the data at the tail of the
** Outbound Post Queue and load it into an internal prefetch register. When the PCI read access
** occurs, the data is read directly from the prefetch register.
** The prefetch mechanism loads a value of -1 (FFFF.FFFFH) into the prefetch register when the head
** and tail pointers are equal and the queue is empty. In order to update the prefetch register when
** messages are added to the queue and it becomes non-empty, the prefetch mechanism automatically
** starts a prefetch when the prefetch register contains FFFF.FFFFH and the Outbound Post Head
** Pointer Register is written. The Intel XScale core needs to update the Outbound Post Head
** Pointer Register when it adds messages to the queue.
** A prefetch must appear atomic from the perspective of the external PCI agent. When a prefetch is
** started, any PCI transaction that attempts to access the Outbound Post Queue is signalled a Retry
** until the prefetch is completed.
** A PCI interrupt may be generated when data in the prefetch buffer is valid. When the prefetch
** queue is clear, no interrupt is generated. The Outbound Post Queue Interrupt bit in the Outbound
** Interrupt Status Register shall indicate the status of the prefetch buffer data and therefore the
** interrupt status. The interrupt is cleared when any prefetched data has been read from the Outbound
** Queue Port. The interrupt can be masked by the Outbound Interrupt Mask Register.
** The Intel XScale core may place messages in the Outbound Post Queue by writing the data to
** the local memory address in the Outbound Post Head Pointer Register. The processor must then
** increment the Outbound Post Head Pointer Register.
** ==================================================
** Outbound Free Queue
** -----------------------
** The Outbound Free Queue holds free messages placed there by other processors for the Intel
** XScale core to use. This queue is read from the queue tail by the Intel XScale core. It is
** written to the queue head by external PCI agents. The tail pointer is maintained by the Intel
** XScale core. The head pointer is maintained by the MU hardware.
** For a PCI write transaction that accesses the Outbound Queue Port, the MU writes the data to the
** local memory address in the Outbound Free Head Pointer Register. When the data written to the
** Outbound Queue Port is written to local memory, the MU hardware increments the Outbound Free
** Head Pointer Register.
** When the head pointer and the tail pointer become equal and the queue is full, the MU may signal
** an interrupt to the Intel XScale core to register the queue full condition. This interrupt is
** recorded in the Inbound Interrupt Status Register. The interrupt is cleared when the Outbound Free
** Queue Full Interrupt bit is cleared and not by writing to the head or tail pointers. The interrupt can
** be masked by the Inbound Interrupt Mask Register. Software must be aware of the state of the
** Outbound Free Queue Interrupt Mask bit to guarantee that the full condition is recognized by the
** core processor.
** From the time that a PCI write transaction is received until the data is written in local memory and
** the Outbound Free Head Pointer Register is incremented, any PCI transaction that attempts to
** access the Outbound Free Queue Port is signalled a retry.
** The Intel XScale core may read messages from the Outbound Free Queue by reading the data
** from the local memory address in the Outbound Free Tail Pointer Register. The processor must
** then increment the Outbound Free Tail Pointer Register. When the Outbound Free Queue is full,
** the hardware must retry any PCI writes until a slot in the queue becomes available.
**
** ==================================================================================
** Circular Queue Summary
** ----------------------
** ________________________________________________________________________________________________________________________________________________
** | Queue Name | PCI Port |Generate PCI Interrupt |Generate Intel Xscale Core Interrupt|Head Pointer maintained by|Tail Pointer maintained by|
** |_____________|_______________|_______________________|____________________________________|__________________________|__________________________|
** |Inbound Post | Inbound Queue | | | | |
** | Queue | Port | NO | Yes, when queue is written | MU hardware | Intel XScale |
** |_____________|_______________|_______________________|____________________________________|__________________________|__________________________|
** |Inbound Free | Inbound Queue | | | | |
** | Queue | Port | NO | NO | Intel XScale | MU hardware |
** |_____________|_______________|_______________________|____________________________________|__________________________|__________________________|
** ==================================================================================
** Circular Queue Status Summary
** ----------------------
** ____________________________________________________________________________________________________
** | Queue Name | Queue Status | Head & Tail Pointer | Last Pointer Update |
** |_____________________|________________|_____________________|_______________________________________|
** | Inbound Post Queue | Empty | Equal | Tail pointer last updated by software |
** |_____________________|________________|_____________________|_______________________________________|
** | Inbound Free Queue | Empty | Equal | Head pointer last updated by hardware |
** |_____________________|________________|_____________________|_______________________________________|
**************************************************************************
*/
/*
**************************************************************************
** Index Registers
** ========================
** . The Index Registers are a set of 1004 registers that when written by an external PCI agent can generate an interrupt to the Intel XScale core.
** These registers are for inbound messages only.
** The interrupt is recorded in the Inbound Interrupt Status Register.
** The storage for the Index Registers is allocated from the 80331 local memory.
** PCI write accesses to the Index Registers write the data to local memory.
** PCI read accesses to the Index Registers read the data from local memory.
** . The local memory used for the Index Registers ranges from Inbound ATU Translate Value Register + 050H
** to Inbound ATU Translate Value Register + FFFH.
** . The address of the first write access is stored in the Index Address Register.
** This register is written during the earliest write access and provides a means to determine which Index Register was written.
** Once updated by the MU, the Index Address Register is not updated until the Index Register
** Interrupt bit in the Inbound Interrupt Status Register is cleared.
** . When the interrupt is cleared, the Index Address Register is re-enabled and stores the address of the next Index Register write access.
** Writes by the Intel XScale core to the local memory used by the Index Registers
** does not cause an interrupt and does not update the Index Address Register.
** . The index registers can be accessed with Multi-DWORD reads and single QWORD aligned writes.
**************************************************************************
*/
/*
**************************************************************************
** Messaging Unit Internal Bus Memory Map
** =======================================
** Internal Bus Address___Register Description (Name)____________________|_PCI Configuration Space Register Number_
** FFFF E300H reserved |
** .. .. |
** FFFF E30CH reserved |
** FFFF E310H Inbound Message Register 0 | Available through
** FFFF E314H Inbound Message Register 1 | ATU Inbound Translation Window
** FFFF E318H Outbound Message Register 0 |
** FFFF E31CH Outbound Message Register 1 | or
** FFFF E320H Inbound Doorbell Register |
** FFFF E324H Inbound Interrupt Status Register | must translate PCI address to
** FFFF E328H Inbound Interrupt Mask Register | the Intel Xscale Core
** FFFF E32CH Outbound Doorbell Register | Memory-Mapped Address
** FFFF E330H Outbound Interrupt Status Register |
** FFFF E334H Outbound Interrupt Mask Register |
** ______________________________________________________________________|________________________________________
** FFFF E338H reserved |
** FFFF E33CH reserved |
** FFFF E340H reserved |
** FFFF E344H reserved |
** FFFF E348H reserved |
** FFFF E34CH reserved |
** FFFF E350H MU Configuration Register |
** FFFF E354H Queue Base Address Register |
** FFFF E358H reserved |
** FFFF E35CH reserved | must translate PCI address to
** FFFF E360H Inbound Free Head Pointer Register | the Intel Xscale Core
** FFFF E364H Inbound Free Tail Pointer Register | Memory-Mapped Address
** FFFF E368H Inbound Post Head pointer Register |
** FFFF E36CH Inbound Post Tail Pointer Register |
** FFFF E370H Outbound Free Head Pointer Register |
** FFFF E374H Outbound Free Tail Pointer Register |
** FFFF E378H Outbound Post Head pointer Register |
** FFFF E37CH Outbound Post Tail Pointer Register |
** FFFF E380H Index Address Register |
** FFFF E384H reserved |
** .. .. |
** FFFF E3FCH reserved |
** ______________________________________________________________________|_______________________________________
**************************************************************************
*/
/*
**************************************************************************
** MU Configuration Register - MUCR FFFF.E350H
**
** . The MU Configuration Register (MUCR) contains the Circular Queue Enable bit and the size of one Circular Queue.
** . The Circular Queue Enable bit enables or disables the Circular Queues.
** The Circular Queues are disabled at reset to allow the software to initialize the head
** and tail pointer registers before any PCI accesses to the Queue Ports.
** . Each Circular Queue may range from 4 K entries (16 Kbytes) to 64 K entries (256 Kbytes) and there are four Circular Queues.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:06 000000H 00 2 Reserved
** 05:01 00001 2 Circular Queue Size - This field determines the size of each Circular Queue.
** All four queues are the same size.
** ĦE 00001 2 - 4K Entries (16 Kbytes)
** ĦE 00010 2 - 8K Entries (32 Kbytes)
** ĦE 00100 2 - 16K Entries (64 Kbytes)
** ĦE 01000 2 - 32K Entries (128 Kbytes)
** ĦE 10000 2 - 64K Entries (256 Kbytes)
** 00 0 2 Circular Queue Enable - This bit enables or disables the Circular Queues. When clear the Circular
** Queues are disabled, however the MU accepts PCI accesses to the Circular Queue Ports but ignores
** the data for Writes and return FFFF.FFFFH for Reads. Interrupts are not generated to the core when
** disabled. When set, the Circular Queues are fully enabled.
**************************************************************************
*/
#define ARCMSR_MU_CONFIGURATION_REG 0xFFFFE350
#define ARCMSR_MU_CIRCULAR_QUEUE_SIZE64K 0x0020
#define ARCMSR_MU_CIRCULAR_QUEUE_SIZE32K 0x0010
#define ARCMSR_MU_CIRCULAR_QUEUE_SIZE16K 0x0008
#define ARCMSR_MU_CIRCULAR_QUEUE_SIZE8K 0x0004
#define ARCMSR_MU_CIRCULAR_QUEUE_SIZE4K 0x0002
#define ARCMSR_MU_CIRCULAR_QUEUE_ENABLE 0x0001 /*0:disable 1:enable*/
/*
**************************************************************************
** Queue Base Address Register - QBAR
**
** . The Queue Base Address Register (QBAR) contains the local memory address of the Circular Queues.
** The base address is required to be located on a 1 Mbyte address boundary.
** . All Circular Queue head and tail pointers are based on the QBAR.
** When the head and tail pointer registers are read, the Queue Base Address is returned in the upper 12 bits.
** Writing to the upper 12 bits of the head and tail pointer registers does not affect the Queue Base Address or Queue Base Address Register.
** Warning:
** The QBAR must designate a range allocated to the 80331 DDR SDRAM interface
** ------------------------------------------------------------------------
** Bit Default Description
** 31:20 000H Queue Base Address - Local memory address of the circular queues.
** 19:00 00000H Reserved
**************************************************************************
*/
#define ARCMSR_MU_QUEUE_BASE_ADDRESS_REG 0xFFFFE354
/*
**************************************************************************
** Inbound Free Head Pointer Register - IFHPR
**
** . The Inbound Free Head Pointer Register (IFHPR) contains the local memory offset from
** the Queue Base Address of the head pointer for the Inbound Free Queue.
** The Head Pointer must be aligned on a DWORD address boundary.
** When read, the Queue Base Address is provided in the upper 12 bits of the register.
** Writes to the upper 12 bits of the register are ignored.
** This register is maintained by software.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:20 000H Queue Base Address - Local memory address of the circular queues.
** 19:02 0000H 00 2 Inbound Free Head Pointer - Local memory offset of the head pointer for the Inbound Free Queue.
** 01:00 00 2 Reserved
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_FREE_HEAD_PTR_REG 0xFFFFE360
/*
**************************************************************************
** Inbound Free Tail Pointer Register - IFTPR
**
** . The Inbound Free Tail Pointer Register (IFTPR) contains the local memory offset from the Queue
** Base Address of the tail pointer for the Inbound Free Queue. The Tail Pointer must be aligned on a
** DWORD address boundary. When read, the Queue Base Address is provided in the upper 12 bits
** of the register. Writes to the upper 12 bits of the register are ignored.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:20 000H Queue Base Address - Local memory address of the circular queues.
** 19:02 0000H 00 2 Inbound Free Tail Pointer - Local memory offset of the tail pointer for the Inbound Free Queue.
** 01:00 00 2 Reserved
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_FREE_TAIL_PTR_REG 0xFFFFE364
/*
**************************************************************************
** Inbound Post Head Pointer Register - IPHPR
**
** . The Inbound Post Head Pointer Register (IPHPR) contains the local memory offset from the Queue
** Base Address of the head pointer for the Inbound Post Queue. The Head Pointer must be aligned on
** a DWORD address boundary. When read, the Queue Base Address is provided in the upper 12 bits
** of the register. Writes to the upper 12 bits of the register are ignored.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:20 000H Queue Base Address - Local memory address of the circular queues.
** 19:02 0000H 00 2 Inbound Post Head Pointer - Local memory offset of the head pointer for the Inbound Post Queue.
** 01:00 00 2 Reserved
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_POST_HEAD_PTR_REG 0xFFFFE368
/*
**************************************************************************
** Inbound Post Tail Pointer Register - IPTPR
**
** . The Inbound Post Tail Pointer Register (IPTPR) contains the local memory offset from the Queue
** Base Address of the tail pointer for the Inbound Post Queue. The Tail Pointer must be aligned on a
** DWORD address boundary. When read, the Queue Base Address is provided in the upper 12 bits
** of the register. Writes to the upper 12 bits of the register are ignored.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:20 000H Queue Base Address - Local memory address of the circular queues.
** 19:02 0000H 00 2 Inbound Post Tail Pointer - Local memory offset of the tail pointer for the Inbound Post Queue.
** 01:00 00 2 Reserved
**************************************************************************
*/
#define ARCMSR_MU_INBOUND_POST_TAIL_PTR_REG 0xFFFFE36C
/*
**************************************************************************
** Index Address Register - IAR
**
** . The Index Address Register (IAR) contains the offset of the least recently accessed Index Register.
** It is written by the MU when the Index Registers are written by a PCI agent.
** The register is not updated until the Index Interrupt bit in the Inbound Interrupt Status Register is cleared.
** . The local memory address of the Index Register least recently accessed is computed
** by adding the Index Address Register to the Inbound ATU Translate Value Register.
** ------------------------------------------------------------------------
** Bit Default Description
** 31:12 000000H Reserved
** 11:02 00H 00 2 Index Address - is the local memory offset of the Index Register written (050H to FFCH)
** 01:00 00 2 Reserved
**************************************************************************
*/
#define ARCMSR_MU_LOCAL_MEMORY_INDEX_REG 0xFFFFE380 /*1004 dwords 0x0050....0x0FFC, 4016 bytes 0x0050...0x0FFF*/
/*
**********************************************************************************************************
** RS-232 Interface for Areca Raid Controller
** The low level command interface is exclusive with VT100 terminal
** --------------------------------------------------------------------
** 1. Sequence of command execution
** --------------------------------------------------------------------
** (A) Header : 3 bytes sequence (0x5E, 0x01, 0x61)
** (B) Command block : variable length of data including length, command code, data and checksum byte
** (C) Return data : variable length of data
** --------------------------------------------------------------------
** 2. Command block
** --------------------------------------------------------------------
** (A) 1st byte : command block length (low byte)
** (B) 2nd byte : command block length (high byte)
** note ..command block length shouldn't > 2040 bytes, length excludes these two bytes
** (C) 3rd byte : command code
** (D) 4th and following bytes : variable length data bytes depends on command code
** (E) last byte : checksum byte (sum of 1st byte until last data byte)
** --------------------------------------------------------------------
** 3. Command code and associated data
** --------------------------------------------------------------------
** The following are command code defined in raid controller Command code 0x10--0x1? are used for system level management,
** no password checking is needed and should be implemented in separate well controlled utility and not for end user access.
** Command code 0x20--0x?? always check the password, password must be entered to enable these command.
** enum
** {
** GUI_SET_SERIAL=0x10,
** GUI_SET_VENDOR,
** GUI_SET_MODEL,
** GUI_IDENTIFY,
** GUI_CHECK_PASSWORD,
** GUI_LOGOUT,
** GUI_HTTP,
** GUI_SET_ETHERNET_ADDR,
** GUI_SET_LOGO,
** GUI_POLL_EVENT,
** GUI_GET_EVENT,
** GUI_GET_HW_MONITOR,
**
** // GUI_QUICK_CREATE=0x20, (function removed)
** GUI_GET_INFO_R=0x20,
** GUI_GET_INFO_V,
** GUI_GET_INFO_P,
** GUI_GET_INFO_S,
** GUI_CLEAR_EVENT,
**
** GUI_MUTE_BEEPER=0x30,
** GUI_BEEPER_SETTING,
** GUI_SET_PASSWORD,
** GUI_HOST_INTERFACE_MODE,
** GUI_REBUILD_PRIORITY,
** GUI_MAX_ATA_MODE,
** GUI_RESET_CONTROLLER,
** GUI_COM_PORT_SETTING,
** GUI_NO_OPERATION,
** GUI_DHCP_IP,
**
** GUI_CREATE_PASS_THROUGH=0x40,
** GUI_MODIFY_PASS_THROUGH,
** GUI_DELETE_PASS_THROUGH,
** GUI_IDENTIFY_DEVICE,
**
** GUI_CREATE_RAIDSET=0x50,
** GUI_DELETE_RAIDSET,
** GUI_EXPAND_RAIDSET,
** GUI_ACTIVATE_RAIDSET,
** GUI_CREATE_HOT_SPARE,
** GUI_DELETE_HOT_SPARE,
**
** GUI_CREATE_VOLUME=0x60,
** GUI_MODIFY_VOLUME,
** GUI_DELETE_VOLUME,
** GUI_START_CHECK_VOLUME,
** GUI_STOP_CHECK_VOLUME
** };
**
** Command description :
**
** GUI_SET_SERIAL : Set the controller serial#
** byte 0,1 : length
** byte 2 : command code 0x10
** byte 3 : password length (should be 0x0f)
** byte 4-0x13 : should be "ArEcATecHnoLogY"
** byte 0x14--0x23 : Serial number string (must be 16 bytes)
** GUI_SET_VENDOR : Set vendor string for the controller
** byte 0,1 : length
** byte 2 : command code 0x11
** byte 3 : password length (should be 0x08)
** byte 4-0x13 : should be "ArEcAvAr"
** byte 0x14--0x3B : vendor string (must be 40 bytes)
** GUI_SET_MODEL : Set the model name of the controller
** byte 0,1 : length
** byte 2 : command code 0x12
** byte 3 : password length (should be 0x08)
** byte 4-0x13 : should be "ArEcAvAr"
** byte 0x14--0x1B : model string (must be 8 bytes)
** GUI_IDENTIFY : Identify device
** byte 0,1 : length
** byte 2 : command code 0x13
** return "Areca RAID Subsystem "
** GUI_CHECK_PASSWORD : Verify password
** byte 0,1 : length
** byte 2 : command code 0x14
** byte 3 : password length
** byte 4-0x?? : user password to be checked
** GUI_LOGOUT : Logout GUI (force password checking on next command)
** byte 0,1 : length
** byte 2 : command code 0x15
** GUI_HTTP : HTTP interface (reserved for Http proxy service)(0x16)
**
** GUI_SET_ETHERNET_ADDR : Set the ethernet MAC address
** byte 0,1 : length
** byte 2 : command code 0x17
** byte 3 : password length (should be 0x08)
** byte 4-0x13 : should be "ArEcAvAr"
** byte 0x14--0x19 : Ethernet MAC address (must be 6 bytes)
** GUI_SET_LOGO : Set logo in HTTP
** byte 0,1 : length
** byte 2 : command code 0x18
** byte 3 : Page# (0/1/2/3) (0xff --> clear OEM logo)
** byte 4/5/6/7 : 0x55/0xaa/0xa5/0x5a
** byte 8 : TITLE.JPG data (each page must be 2000 bytes)
** note .... page0 1st 2 byte must be actual length of the JPG file
** GUI_POLL_EVENT : Poll If Event Log Changed
** byte 0,1 : length
** byte 2 : command code 0x19
** GUI_GET_EVENT : Read Event
** byte 0,1 : length
** byte 2 : command code 0x1a
** byte 3 : Event Page (0:1st page/1/2/3:last page)
** GUI_GET_HW_MONITOR : Get HW monitor data
** byte 0,1 : length
** byte 2 : command code 0x1b
** byte 3 : # of FANs(example 2)
** byte 4 : # of Voltage sensor(example 3)
** byte 5 : # of temperature sensor(example 2)
** byte 6 : # of power
** byte 7/8 : Fan#0 (RPM)
** byte 9/10 : Fan#1
** byte 11/12 : Voltage#0 original value in *1000
** byte 13/14 : Voltage#0 value
** byte 15/16 : Voltage#1 org
** byte 17/18 : Voltage#1
** byte 19/20 : Voltage#2 org
** byte 21/22 : Voltage#2
** byte 23 : Temp#0
** byte 24 : Temp#1
** byte 25 : Power indicator (bit0 : power#0, bit1 : power#1)
** byte 26 : UPS indicator
** GUI_QUICK_CREATE : Quick create raid/volume set
** byte 0,1 : length
** byte 2 : command code 0x20
** byte 3/4/5/6 : raw capacity
** byte 7 : raid level
** byte 8 : stripe size
** byte 9 : spare
** byte 10/11/12/13: device mask (the devices to create raid/volume)
** This function is removed, application like to implement quick create function
** need to use GUI_CREATE_RAIDSET and GUI_CREATE_VOLUMESET function.
** GUI_GET_INFO_R : Get Raid Set Information
** byte 0,1 : length
** byte 2 : command code 0x20
** byte 3 : raidset#
**
** typedef struct sGUI_RAIDSET
** {
** BYTE grsRaidSetName[16];
** DWORD grsCapacity;
** DWORD grsCapacityX;
** DWORD grsFailMask;
** BYTE grsDevArray[32];
** BYTE grsMemberDevices;
** BYTE grsNewMemberDevices;
** BYTE grsRaidState;
** BYTE grsVolumes;
** BYTE grsVolumeList[16];
** BYTE grsRes1;
** BYTE grsRes2;
** BYTE grsRes3;
** BYTE grsFreeSegments;
** DWORD grsRawStripes[8];
** DWORD grsRes4;
** DWORD grsRes5; // Total to 128 bytes
** DWORD grsRes6; // Total to 128 bytes
** } sGUI_RAIDSET, *pGUI_RAIDSET;
** GUI_GET_INFO_V : Get Volume Set Information
** byte 0,1 : length
** byte 2 : command code 0x21
** byte 3 : volumeset#
**
** typedef struct sGUI_VOLUMESET
** {
** BYTE gvsVolumeName[16]; // 16
** DWORD gvsCapacity;
** DWORD gvsCapacityX;
** DWORD gvsFailMask;
** DWORD gvsStripeSize;
** DWORD gvsNewFailMask;
** DWORD gvsNewStripeSize;
** DWORD gvsVolumeStatus;
** DWORD gvsProgress; // 32
** sSCSI_ATTR gvsScsi;
** BYTE gvsMemberDisks;
** BYTE gvsRaidLevel; // 8
**
** BYTE gvsNewMemberDisks;
** BYTE gvsNewRaidLevel;
** BYTE gvsRaidSetNumber;
** BYTE gvsRes0; // 4
** BYTE gvsRes1[4]; // 64 bytes
** } sGUI_VOLUMESET, *pGUI_VOLUMESET;
**
** GUI_GET_INFO_P : Get Physical Drive Information
** byte 0,1 : length
** byte 2 : command code 0x22
** byte 3 : drive # (from 0 to max-channels - 1)
**
** typedef struct sGUI_PHY_DRV
** {
** BYTE gpdModelName[40];
** BYTE gpdSerialNumber[20];
** BYTE gpdFirmRev[8];
** DWORD gpdCapacity;
** DWORD gpdCapacityX; // Reserved for expansion
** BYTE gpdDeviceState;
** BYTE gpdPioMode;
** BYTE gpdCurrentUdmaMode;
** BYTE gpdUdmaMode;
** BYTE gpdDriveSelect;
** BYTE gpdRaidNumber; // 0xff if not belongs to a raid set
** sSCSI_ATTR gpdScsi;
** BYTE gpdReserved[40]; // Total to 128 bytes
** } sGUI_PHY_DRV, *pGUI_PHY_DRV;
**
** GUI_GET_INFO_S : Get System Information
** byte 0,1 : length
** byte 2 : command code 0x23
**
** typedef struct sCOM_ATTR
** {
** BYTE comBaudRate;
** BYTE comDataBits;
** BYTE comStopBits;
** BYTE comParity;
** BYTE comFlowControl;
** } sCOM_ATTR, *pCOM_ATTR;
**
** typedef struct sSYSTEM_INFO
** {
** BYTE gsiVendorName[40];
** BYTE gsiSerialNumber[16];
** BYTE gsiFirmVersion[16];
** BYTE gsiBootVersion[16];
** BYTE gsiMbVersion[16];
** BYTE gsiModelName[8];
** BYTE gsiLocalIp[4];
** BYTE gsiCurrentIp[4];
** DWORD gsiTimeTick;
** DWORD gsiCpuSpeed;
** DWORD gsiICache;
** DWORD gsiDCache;
** DWORD gsiScache;
** DWORD gsiMemorySize;
** DWORD gsiMemorySpeed;
** DWORD gsiEvents;
** BYTE gsiMacAddress[6];
** BYTE gsiDhcp;
** BYTE gsiBeeper;
** BYTE gsiChannelUsage;
** BYTE gsiMaxAtaMode;
** BYTE gsiSdramEcc; // 1:if ECC enabled
** BYTE gsiRebuildPriority;
** sCOM_ATTR gsiComA; // 5 bytes
** sCOM_ATTR gsiComB; // 5 bytes
** BYTE gsiIdeChannels;
** BYTE gsiScsiHostChannels;
** BYTE gsiIdeHostChannels;
** BYTE gsiMaxVolumeSet;
** BYTE gsiMaxRaidSet;
** BYTE gsiEtherPort; // 1:if ether net port supported
** BYTE gsiRaid6Engine; // 1:Raid6 engine supported
** BYTE gsiRes[75];
** } sSYSTEM_INFO, *pSYSTEM_INFO;
**
** GUI_CLEAR_EVENT : Clear System Event
** byte 0,1 : length
** byte 2 : command code 0x24
**
** GUI_MUTE_BEEPER : Mute current beeper
** byte 0,1 : length
** byte 2 : command code 0x30
**
** GUI_BEEPER_SETTING : Disable beeper
** byte 0,1 : length
** byte 2 : command code 0x31
** byte 3 : 0->disable, 1->enable
**
** GUI_SET_PASSWORD : Change password
** byte 0,1 : length
** byte 2 : command code 0x32
** byte 3 : pass word length ( must <= 15 )
** byte 4 : password (must be alpha-numerical)
**
** GUI_HOST_INTERFACE_MODE : Set host interface mode
** byte 0,1 : length
** byte 2 : command code 0x33
** byte 3 : 0->Independent, 1->cluster
**
** GUI_REBUILD_PRIORITY : Set rebuild priority
** byte 0,1 : length
** byte 2 : command code 0x34
** byte 3 : 0/1/2/3 (low->high)
**
** GUI_MAX_ATA_MODE : Set maximum ATA mode to be used
** byte 0,1 : length
** byte 2 : command code 0x35
** byte 3 : 0/1/2/3 (133/100/66/33)
**
** GUI_RESET_CONTROLLER : Reset Controller
** byte 0,1 : length
** byte 2 : command code 0x36
** *Response with VT100 screen (discard it)
**
** GUI_COM_PORT_SETTING : COM port setting
** byte 0,1 : length
** byte 2 : command code 0x37
** byte 3 : 0->COMA (term port), 1->COMB (debug port)
** byte 4 : 0/1/2/3/4/5/6/7 (1200/2400/4800/9600/19200/38400/57600/115200)
** byte 5 : data bit (0:7 bit, 1:8 bit : must be 8 bit)
** byte 6 : stop bit (0:1, 1:2 stop bits)
** byte 7 : parity (0:none, 1:off, 2:even)
** byte 8 : flow control (0:none, 1:xon/xoff, 2:hardware => must use none)
**
** GUI_NO_OPERATION : No operation
** byte 0,1 : length
** byte 2 : command code 0x38
**
** GUI_DHCP_IP : Set DHCP option and local IP address
** byte 0,1 : length
** byte 2 : command code 0x39
** byte 3 : 0:dhcp disabled, 1:dhcp enabled
** byte 4/5/6/7 : IP address
**
** GUI_CREATE_PASS_THROUGH : Create pass through disk
** byte 0,1 : length
** byte 2 : command code 0x40
** byte 3 : device #
** byte 4 : scsi channel (0/1)
** byte 5 : scsi id (0-->15)
** byte 6 : scsi lun (0-->7)
** byte 7 : tagged queue (1 : enabled)
** byte 8 : cache mode (1 : enabled)
** byte 9 : max speed (0/1/2/3/4, async/20/40/80/160 for scsi)
** (0/1/2/3/4, 33/66/100/133/150 for ide )
**
** GUI_MODIFY_PASS_THROUGH : Modify pass through disk
** byte 0,1 : length
** byte 2 : command code 0x41
** byte 3 : device #
** byte 4 : scsi channel (0/1)
** byte 5 : scsi id (0-->15)
** byte 6 : scsi lun (0-->7)
** byte 7 : tagged queue (1 : enabled)
** byte 8 : cache mode (1 : enabled)
** byte 9 : max speed (0/1/2/3/4, async/20/40/80/160 for scsi)
** (0/1/2/3/4, 33/66/100/133/150 for ide )
**
** GUI_DELETE_PASS_THROUGH : Delete pass through disk
** byte 0,1 : length
** byte 2 : command code 0x42
** byte 3 : device# to be deleted
**
** GUI_IDENTIFY_DEVICE : Identify Device
** byte 0,1 : length
** byte 2 : command code 0x43
** byte 3 : Flash Method(0:flash selected, 1:flash not selected)
** byte 4/5/6/7 : IDE device mask to be flashed
** note .... no response data available
**
** GUI_CREATE_RAIDSET : Create Raid Set
** byte 0,1 : length
** byte 2 : command code 0x50
** byte 3/4/5/6 : device mask
** byte 7-22 : raidset name (if byte 7 == 0:use default)
**
** GUI_DELETE_RAIDSET : Delete Raid Set
** byte 0,1 : length
** byte 2 : command code 0x51
** byte 3 : raidset#
**
** GUI_EXPAND_RAIDSET : Expand Raid Set
** byte 0,1 : length
** byte 2 : command code 0x52
** byte 3 : raidset#
** byte 4/5/6/7 : device mask for expansion
** byte 8/9/10 : (8:0 no change, 1 change, 0xff:terminate, 9:new raid level,10:new stripe size 0/1/2/3/4/5->4/8/16/32/64/128K )
** byte 11/12/13 : repeat for each volume in the raidset ....
**
** GUI_ACTIVATE_RAIDSET : Activate incomplete raid set
** byte 0,1 : length
** byte 2 : command code 0x53
** byte 3 : raidset#
**
** GUI_CREATE_HOT_SPARE : Create hot spare disk
** byte 0,1 : length
** byte 2 : command code 0x54
** byte 3/4/5/6 : device mask for hot spare creation
**
** GUI_DELETE_HOT_SPARE : Delete hot spare disk
** byte 0,1 : length
** byte 2 : command code 0x55
** byte 3/4/5/6 : device mask for hot spare deletion
**
** GUI_CREATE_VOLUME : Create volume set
** byte 0,1 : length
** byte 2 : command code 0x60
** byte 3 : raidset#
** byte 4-19 : volume set name (if byte4 == 0, use default)
** byte 20-27 : volume capacity (blocks)
** byte 28 : raid level
** byte 29 : stripe size (0/1/2/3/4/5->4/8/16/32/64/128K)
** byte 30 : channel
** byte 31 : ID
** byte 32 : LUN
** byte 33 : 1 enable tag
** byte 34 : 1 enable cache
** byte 35 : speed (0/1/2/3/4->async/20/40/80/160 for scsi)
** (0/1/2/3/4->33/66/100/133/150 for IDE )
** byte 36 : 1 to select quick init
**
** GUI_MODIFY_VOLUME : Modify volume Set
** byte 0,1 : length
** byte 2 : command code 0x61
** byte 3 : volumeset#
** byte 4-19 : new volume set name (if byte4 == 0, not change)
** byte 20-27 : new volume capacity (reserved)
** byte 28 : new raid level
** byte 29 : new stripe size (0/1/2/3/4/5->4/8/16/32/64/128K)
** byte 30 : new channel
** byte 31 : new ID
** byte 32 : new LUN
** byte 33 : 1 enable tag
** byte 34 : 1 enable cache
** byte 35 : speed (0/1/2/3/4->async/20/40/80/160 for scsi)
** (0/1/2/3/4->33/66/100/133/150 for IDE )
**
** GUI_DELETE_VOLUME : Delete volume set
** byte 0,1 : length
** byte 2 : command code 0x62
** byte 3 : volumeset#
**
** GUI_START_CHECK_VOLUME : Start volume consistency check
** byte 0,1 : length
** byte 2 : command code 0x63
** byte 3 : volumeset#
**
** GUI_STOP_CHECK_VOLUME : Stop volume consistency check
** byte 0,1 : length
** byte 2 : command code 0x64
** ---------------------------------------------------------------------
** 4. Returned data
** ---------------------------------------------------------------------
** (A) Header : 3 bytes sequence (0x5E, 0x01, 0x61)
** (B) Length : 2 bytes (low byte 1st, excludes length and checksum byte)
** (C) status or data :
** <1> If length == 1 ==> 1 byte status code
** #define GUI_OK 0x41
** #define GUI_RAIDSET_NOT_NORMAL 0x42
** #define GUI_VOLUMESET_NOT_NORMAL 0x43
** #define GUI_NO_RAIDSET 0x44
** #define GUI_NO_VOLUMESET 0x45
** #define GUI_NO_PHYSICAL_DRIVE 0x46
** #define GUI_PARAMETER_ERROR 0x47
** #define GUI_UNSUPPORTED_COMMAND 0x48
** #define GUI_DISK_CONFIG_CHANGED 0x49
** #define GUI_INVALID_PASSWORD 0x4a
** #define GUI_NO_DISK_SPACE 0x4b
** #define GUI_CHECKSUM_ERROR 0x4c
** #define GUI_PASSWORD_REQUIRED 0x4d
** <2> If length > 1 ==> data block returned from controller and the contents depends on the command code
** (E) Checksum : checksum of length and status or data byte
**************************************************************************
*/