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/*-
* Copyright (c) 2005 Poul-Henning Kamp <phk@FreeBSD.org>
* Copyright (c) 2010 Joerg Wunsch <joerg@FreeBSD.org>
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/ieee488/upd7210.h 203360 2010-02-01 21:21:10Z joerg $
*
* Locating an actual µPD7210 data book has proven quite impossible for me.
* There are a fair number of newer chips which are supersets of the µPD7210
* but they are particular eager to comprehensively mark what the extensions
* are and what is in the base set. Some even give the registers and their
* bits new names.
*
* The following information is based on a description of the µPD7210 found
* in an old manual for a VME board which used the chip.
*/
#ifndef _DEV_IEEE488_UPD7210_H_
#define _DEV_IEEE488_UPD7210_H_
#ifdef _KERNEL
struct upd7210;
struct ibfoo;
/* upd7210 interface definitions for HW drivers */
typedef int upd7210_irq_t(struct upd7210 *, int);
struct upd7210 {
struct resource *reg_res[8];
struct resource *irq_clear_res;
u_int reg_offset[8];
int dmachan;
int unit;
int use_fifo;
/* private stuff */
struct mtx mutex;
uint8_t rreg[8];
uint8_t wreg[8 + 8];
upd7210_irq_t *irq;
int busy;
u_char *buf;
size_t bufsize;
u_int buf_wp;
u_int buf_rp;
struct cdev *cdev;
struct ibfoo *ibfoo;
};
#ifdef UPD7210_HW_DRIVER
void upd7210intr(void *);
void upd7210attach(struct upd7210 *);
void upd7210detach(struct upd7210 *);
#endif
#ifdef UPD7210_SW_DRIVER
/* upd7210 hardware definitions. */
/* Write registers */
enum upd7210_wreg {
CDOR = 0, /* Command/Data Out Register */
IMR1 = 1, /* Interrupt Mask Register 1 */
IMR2 = 2, /* Interrupt Mask Register 2 */
SPMR = 3, /* Serial Poll Mode Register */
ADMR = 4, /* ADdress Mode Register */
AUXMR = 5, /* AUXilliary Mode Register */
ICR = 5, /* Internal Counter Register */
PPR = 5, /* Parallel Poll Register */
AUXRA = 5, /* AUXilliary Register A */
AUXRB = 5, /* AUXilliary Register B */
AUXRE = 5, /* AUXilliary Register E */
ADR = 6, /* ADdress Register */
EOSR = 7, /* End-Of-String Register */
};
/* Read registers */
enum upd7210_rreg {
DIR = 0, /* Data In Register */
ISR1 = 1, /* Interrupt Status Register 1 */
ISR2 = 2, /* Interrupt Status Register 2 */
SPSR = 3, /* Serial Poll Status Register */
ADSR = 4, /* ADdress Status Register */
CPTR = 5, /* Command Pass Though Register */
ADR0 = 6, /* ADdress Register 0 */
ADR1 = 7, /* ADdress Register 1 */
};
/* Bits for ISR1 and IMR1 */
#define IXR1_DI (1 << 0) /* Data In */
#define IXR1_DO (1 << 1) /* Data Out */
#define IXR1_ERR (1 << 2) /* Error */
#define IXR1_DEC (1 << 3) /* Device Clear */
#define IXR1_ENDRX (1 << 4) /* End Received */
#define IXR1_DET (1 << 5) /* Device Execute Trigger */
#define IXR1_APT (1 << 6) /* Address Pass-Through */
#define IXR1_CPT (1 << 7) /* Command Pass-Through */
/* Bits for ISR2 and IMR2 */
#define IXR2_ADSC (1 << 0) /* Addressed Status Change */
#define IXR2_REMC (1 << 1) /* Remote Change */
#define IXR2_LOKC (1 << 2) /* Lockout Change */
#define IXR2_CO (1 << 3) /* Command Out */
#define ISR2_REM (1 << 4) /* Remove */
#define IMR2_DMAI (1 << 4) /* DMA In Enable */
#define ISR2_LOK (1 << 5) /* Lockout */
#define IMR2_DMAO (1 << 5) /* DMA Out Enable */
#define IXR2_SRQI (1 << 6) /* Service Request Input */
#define ISR2_INT (1 << 7) /* Interrupt */
#define SPSR_PEND (1 << 6) /* Pending */
#define SPMR_RSV (1 << 6) /* Request SerVice */
#define ADSR_MJMN (1 << 0) /* MaJor MiNor */
#define ADSR_TA (1 << 1) /* Talker Active */
#define ADSR_LA (1 << 2) /* Listener Active */
#define ADSR_TPAS (1 << 3) /* Talker Primary Addr. State */
#define ADSR_LPAS (1 << 4) /* Listener Primary Addr. State */
#define ADSR_SPMS (1 << 5) /* Serial Poll Mode State */
#define ADSR_ATN (1 << 6) /* Attention */
#define ADSR_CIC (1 << 7) /* Controller In Charge */
#define ADMR_ADM0 (1 << 0) /* Address Mode 0 */
#define ADMR_ADM1 (1 << 1) /* Address Mode 1 */
#define ADMR_TRM0 (1 << 4) /* Transmit/Receive Mode 0 */
#define ADMR_TRM1 (1 << 5) /* Transmit/Receive Mode 1 */
#define ADMR_LON (1 << 6) /* Listen Only */
#define ADMR_TON (1 << 7) /* Talk Only */
/* Constant part of overloaded write registers */
#define C_ICR 0x20
#define C_PPR 0x60
#define C_AUXA 0x80
#define C_AUXB 0xa0
#define C_AUXE 0xc0
#define AUXMR_PON 0x00 /* Immediate Execute pon */
#define AUXMR_CPP 0x01 /* Clear Parallel Poll */
#define AUXMR_CRST 0x02 /* Chip Reset */
#define AUXMR_RFD 0x03 /* Finish Handshake */
#define AUXMR_TRIG 0x04 /* Trigger */
#define AUXMR_RTL 0x05 /* Return to local */
#define AUXMR_SEOI 0x06 /* Send EOI */
#define AUXMR_NVSA 0x07 /* Non-Valid Secondary cmd/addr */
/* 0x08 undefined/unknown */
#define AUXMR_SPP 0x09 /* Set Parallel Poll */
/* 0x0a undefined/unknown */
/* 0x0b undefined/unknown */
/* 0x0c undefined/unknown */
/* 0x0d undefined/unknown */
/* 0x0e undefined/unknown */
#define AUXMR_VSA 0x0f /* Valid Secondary cmd/addr */
#define AUXMR_GTS 0x10 /* Go to Standby */
#define AUXMR_TCA 0x11 /* Take Control Async (pulsed) */
#define AUXMR_TCS 0x12 /* Take Control Synchronously */
#define AUXMR_LISTEN 0x13 /* Listen */
#define AUXMR_DSC 0x14 /* Disable System Control */
/* 0x15 undefined/unknown */
#define AUXMR_SIFC 0x16 /* Set IFC */
#define AUXMR_CREN 0x17 /* Clear REN */
/* 0x18 undefined/unknown */
/* 0x19 undefined/unknown */
#define AUXMR_TCSE 0x1a /* Take Control Sync on End */
#define AUXMR_LCM 0x1b /* Listen Continuously Mode */
#define AUXMR_LUNL 0x1c /* Local Unlisten */
#define AUXMR_EPP 0x1d /* Execute Parallel Poll */
#define AUXMR_CIFC 0x1e /* Clear IFC */
#define AUXMR_SREN 0x1f /* Set REN */
#define PPR_U (1 << 4) /* Unconfigure */
#define PPR_S (1 << 3) /* Status Polarity */
#define AUXA_HLDA (1 << 0) /* Holdoff on All */
#define AUXA_HLDE (1 << 1) /* Holdoff on END */
#define AUXA_REOS (1 << 2) /* End on EOS received */
#define AUXA_XEOS (1 << 3) /* Transmit END with EOS */
#define AUXA_BIN (1 << 4) /* Binary */
#define AUXB_CPTE (1 << 0) /* Cmd Pass Through Enable */
#define AUXB_SPEOI (1 << 1) /* Send Serial Poll EOI */
#define AUXB_TRI (1 << 2) /* Three-State Timing */
#define AUXB_INV (1 << 3) /* Invert */
#define AUXB_ISS (1 << 4) /* Individual Status Select */
#define AUXE_DHDT (1 << 0) /* DAC Holdoff on DTAS */
#define AUXE_DHDC (1 << 1) /* DAC Holdoff on DCAS */
#define ADR0_DL0 (1 << 5) /* Disable Listener 0 */
#define ADR0_DT0 (1 << 6) /* Disable Talker 0 */
#define ADR_DL (1 << 5) /* Disable Listener */
#define ADR_DT (1 << 6) /* Disable Talker */
#define ADR_ARS (1 << 7) /* Address Register Select */
#define ADR1_DL1 (1 << 5) /* Disable Listener 1 */
#define ADR1_DT1 (1 << 6) /* Disable Talker 1 */
#define ADR1_EOI (1 << 7) /* End or Identify */
/* Stuff from software drivers */
extern struct cdevsw gpib_ib_cdevsw;
/* Stuff from upd7210.c */
void upd7210_print_isr(u_int isr1, u_int isr2);
u_int upd7210_rd(struct upd7210 *u, enum upd7210_rreg reg);
void upd7210_wr(struct upd7210 *u, enum upd7210_wreg reg, u_int val);
int upd7210_take_ctrl_async(struct upd7210 *u);
int upd7210_goto_standby(struct upd7210 *u);
#endif /* UPD7210_SW_DRIVER */
#endif /* _KERNEL */
#endif /* _DEV_IEEE488_UPD7210_H_ */