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/*-
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Copyright 1994-2009 The FreeBSD Project.
* All rights reserved.
*
* 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 FREEBSD PROJECT``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 FREEBSD PROJECT 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.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies,either expressed or implied, of the FreeBSD Project.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/mfi/mfi_tbolt.c 238013 2012-07-02 19:19:07Z marius $");
#include "opt_mfi.h"
#include <sys/param.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/selinfo.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/bio.h>
#include <sys/ioccom.h>
#include <sys/eventhandler.h>
#include <sys/callout.h>
#include <sys/uio.h>
#include <machine/bus.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <dev/mfi/mfireg.h>
#include <dev/mfi/mfi_ioctl.h>
#include <dev/mfi/mfivar.h>
struct mfi_cmd_tbolt *mfi_tbolt_get_cmd(struct mfi_softc *sc);
union mfi_mpi2_request_descriptor *
mfi_tbolt_get_request_descriptor(struct mfi_softc *sc, uint16_t index);
void mfi_tbolt_complete_cmd(struct mfi_softc *sc);
int mfi_tbolt_build_io(struct mfi_softc *sc, struct mfi_command *mfi_cmd,
struct mfi_cmd_tbolt *cmd);
static inline void mfi_tbolt_return_cmd(struct mfi_softc *sc,
struct mfi_cmd_tbolt *cmd);
union mfi_mpi2_request_descriptor *mfi_tbolt_build_mpt_cmd(struct mfi_softc
*sc, struct mfi_command *cmd);
uint8_t
mfi_build_mpt_pass_thru(struct mfi_softc *sc, struct mfi_command *mfi_cmd);
union mfi_mpi2_request_descriptor *mfi_build_and_issue_cmd(struct mfi_softc
*sc, struct mfi_command *mfi_cmd);
void mfi_tbolt_build_ldio(struct mfi_softc *sc, struct mfi_command *mfi_cmd,
struct mfi_cmd_tbolt *cmd);
static int mfi_tbolt_make_sgl(struct mfi_softc *sc, struct mfi_command
*mfi_cmd, pMpi25IeeeSgeChain64_t sgl_ptr, struct mfi_cmd_tbolt *cmd);
void
map_tbolt_cmd_status(struct mfi_command *mfi_cmd, uint8_t status,
uint8_t ext_status);
static void mfi_issue_pending_cmds_again (struct mfi_softc *sc);
static void mfi_kill_hba (struct mfi_softc *sc);
static void mfi_process_fw_state_chg_isr(void *arg);
static void mfi_sync_map_complete(struct mfi_command *);
static void mfi_queue_map_sync(struct mfi_softc *sc);
#define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000008)
void
mfi_tbolt_enable_intr_ppc(struct mfi_softc *sc)
{
MFI_WRITE4(sc, MFI_OMSK, ~MFI_FUSION_ENABLE_INTERRUPT_MASK);
MFI_READ4(sc, MFI_OMSK);
}
void
mfi_tbolt_disable_intr_ppc(struct mfi_softc *sc)
{
MFI_WRITE4(sc, MFI_OMSK, 0xFFFFFFFF);
MFI_READ4(sc, MFI_OMSK);
}
int32_t
mfi_tbolt_read_fw_status_ppc(struct mfi_softc *sc)
{
return MFI_READ4(sc, MFI_OSP0);
}
int32_t
mfi_tbolt_check_clear_intr_ppc(struct mfi_softc *sc)
{
int32_t status, mfi_status = 0;
status = MFI_READ4(sc, MFI_OSTS);
if (status & 1) {
MFI_WRITE4(sc, MFI_OSTS, status);
MFI_READ4(sc, MFI_OSTS);
if (status & MFI_STATE_CHANGE_INTERRUPT) {
mfi_status |= MFI_FIRMWARE_STATE_CHANGE;
}
return mfi_status;
}
if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
return 1;
MFI_READ4(sc, MFI_OSTS);
return 0;
}
void
mfi_tbolt_issue_cmd_ppc(struct mfi_softc *sc, bus_addr_t bus_add,
uint32_t frame_cnt)
{
bus_add |= (MFI_REQ_DESCRIPT_FLAGS_MFA
<< MFI_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
MFI_WRITE4(sc, MFI_IQPL, (uint32_t)bus_add);
MFI_WRITE4(sc, MFI_IQPH, (uint32_t)((uint64_t)bus_add >> 32));
}
/*
* mfi_tbolt_adp_reset - For controller reset
* @regs: MFI register set
*/
int
mfi_tbolt_adp_reset(struct mfi_softc *sc)
{
int retry = 0, i = 0;
int HostDiag;
MFI_WRITE4(sc, MFI_WSR, 0xF);
MFI_WRITE4(sc, MFI_WSR, 4);
MFI_WRITE4(sc, MFI_WSR, 0xB);
MFI_WRITE4(sc, MFI_WSR, 2);
MFI_WRITE4(sc, MFI_WSR, 7);
MFI_WRITE4(sc, MFI_WSR, 0xD);
for (i = 0; i < 10000; i++) ;
HostDiag = (uint32_t)MFI_READ4(sc, MFI_HDR);
while (!( HostDiag & DIAG_WRITE_ENABLE)) {
for (i = 0; i < 1000; i++);
HostDiag = (uint32_t)MFI_READ4(sc, MFI_HDR);
device_printf(sc->mfi_dev, "ADP_RESET_TBOLT: retry time=%x, "
"hostdiag=%x\n", retry, HostDiag);
if (retry++ >= 100)
return 1;
}
device_printf(sc->mfi_dev, "ADP_RESET_TBOLT: HostDiag=%x\n", HostDiag);
MFI_WRITE4(sc, MFI_HDR, (HostDiag | DIAG_RESET_ADAPTER));
for (i=0; i < 10; i++) {
for (i = 0; i < 10000; i++);
}
HostDiag = (uint32_t)MFI_READ4(sc, MFI_RSR);
while (HostDiag & DIAG_RESET_ADAPTER) {
for (i = 0; i < 1000; i++) ;
HostDiag = (uint32_t)MFI_READ4(sc, MFI_RSR);
device_printf(sc->mfi_dev, "ADP_RESET_TBOLT: retry time=%x, "
"hostdiag=%x\n", retry, HostDiag);
if (retry++ >= 1000)
return 1;
}
return 0;
}
/*
* This routine initialize Thunderbolt specific device information
*/
void
mfi_tbolt_init_globals(struct mfi_softc *sc)
{
/* Initialize single reply size and Message size */
sc->reply_size = MEGASAS_THUNDERBOLT_REPLY_SIZE;
sc->raid_io_msg_size = MEGASAS_THUNDERBOLT_NEW_MSG_SIZE;
/*
* Calculating how many SGEs allowed in a allocated main message
* (size of the Message - Raid SCSI IO message size(except SGE))
* / size of SGE
* (0x100 - (0x90 - 0x10)) / 0x10 = 8
*/
sc->max_SGEs_in_main_message =
(uint8_t)((sc->raid_io_msg_size
- (sizeof(struct mfi_mpi2_request_raid_scsi_io)
- sizeof(MPI2_SGE_IO_UNION))) / sizeof(MPI2_SGE_IO_UNION));
/*
* (Command frame size allocaed in SRB ext - Raid SCSI IO message size)
* / size of SGL ;
* (1280 - 256) / 16 = 64
*/
sc->max_SGEs_in_chain_message = (MR_COMMAND_SIZE
- sc->raid_io_msg_size) / sizeof(MPI2_SGE_IO_UNION);
/*
* (0x08-1) + 0x40 = 0x47 - 0x01 = 0x46 one is left for command
* colscing
*/
sc->mfi_max_sge = (sc->max_SGEs_in_main_message - 1)
+ sc->max_SGEs_in_chain_message - 1;
/*
* This is the offset in number of 4 * 32bit words to the next chain
* (0x100 - 0x10)/0x10 = 0xF(15)
*/
sc->chain_offset_value_for_main_message = (sc->raid_io_msg_size
- sizeof(MPI2_SGE_IO_UNION))/16;
sc->chain_offset_value_for_mpt_ptmsg
= offsetof(struct mfi_mpi2_request_raid_scsi_io, SGL)/16;
sc->mfi_cmd_pool_tbolt = NULL;
sc->request_desc_pool = NULL;
}
/*
* This function calculates the memory requirement for Thunderbolt
* controller, returns the total required memory in bytes
*/
uint32_t
mfi_tbolt_get_memory_requirement(struct mfi_softc *sc)
{
uint32_t size;
size = MEGASAS_THUNDERBOLT_MSG_ALLIGNMENT; /* for Alignment */
size += sc->raid_io_msg_size * (sc->mfi_max_fw_cmds + 1);
size += sc->reply_size * sc->mfi_max_fw_cmds;
/* this is for SGL's */
size += MEGASAS_MAX_SZ_CHAIN_FRAME * sc->mfi_max_fw_cmds;
return size;
}
/*
* Description:
* This function will prepare message pools for the Thunderbolt controller
* Arguments:
* DevExt - HBA miniport driver's adapter data storage structure
* pMemLocation - start of the memory allocated for Thunderbolt.
* Return Value:
* TRUE if successful
* FALSE if failed
*/
int
mfi_tbolt_init_desc_pool(struct mfi_softc *sc, uint8_t* mem_location,
uint32_t tbolt_contg_length)
{
uint32_t offset = 0;
uint8_t *addr = mem_location;
/* Request Descriptor Base physical Address */
/* For Request Decriptors Virtual Memory */
/* Initialise the aligned IO Frames Virtual Memory Pointer */
if (((uintptr_t)addr) & (0xFF)) {
addr = &addr[sc->raid_io_msg_size];
addr = (uint8_t *)((uintptr_t)addr & (~0xFF));
sc->request_message_pool_align = addr;
} else
sc->request_message_pool_align = addr;
offset = sc->request_message_pool_align - sc->request_message_pool;
sc->request_msg_busaddr = sc->mfi_tb_busaddr + offset;
/* DJA XXX should this be bus dma ??? */
/* Skip request message pool */
addr = &addr[sc->raid_io_msg_size * (sc->mfi_max_fw_cmds + 1)];
/* Reply Frame Pool is initialized */
sc->reply_frame_pool = (struct mfi_mpi2_reply_header *) addr;
if (((uintptr_t)addr) & (0xFF)) {
addr = &addr[sc->reply_size];
addr = (uint8_t *)((uintptr_t)addr & (~0xFF));
}
sc->reply_frame_pool_align
= (struct mfi_mpi2_reply_header *)addr;
offset = (uintptr_t)sc->reply_frame_pool_align
- (uintptr_t)sc->request_message_pool;
sc->reply_frame_busaddr = sc->mfi_tb_busaddr + offset;
/* Skip Reply Frame Pool */
addr += sc->reply_size * sc->mfi_max_fw_cmds;
sc->reply_pool_limit = addr;
/* initializing reply address to 0xFFFFFFFF */
memset((uint8_t *)sc->reply_frame_pool, 0xFF,
(sc->reply_size * sc->mfi_max_fw_cmds));
offset = sc->reply_size * sc->mfi_max_fw_cmds;
sc->sg_frame_busaddr = sc->reply_frame_busaddr + offset;
/* initialize the last_reply_idx to 0 */
sc->last_reply_idx = 0;
offset = (sc->sg_frame_busaddr + (MEGASAS_MAX_SZ_CHAIN_FRAME *
sc->mfi_max_fw_cmds)) - sc->mfi_tb_busaddr;
if (offset > tbolt_contg_length)
device_printf(sc->mfi_dev, "Error:Initialized more than "
"allocated\n");
return 0;
}
/*
* This routine prepare and issue INIT2 frame to the Firmware
*/
int
mfi_tbolt_init_MFI_queue(struct mfi_softc *sc)
{
struct MPI2_IOC_INIT_REQUEST *mpi2IocInit;
struct mfi_init_frame *mfi_init;
uintptr_t offset = 0;
bus_addr_t phyAddress;
MFI_ADDRESS *mfiAddressTemp;
struct mfi_command *cm;
int error;
mpi2IocInit = (struct MPI2_IOC_INIT_REQUEST *)sc->mfi_tb_ioc_init_desc;
/* Check if initialization is already completed */
if (sc->MFA_enabled) {
return 1;
}
mtx_lock(&sc->mfi_io_lock);
if ((cm = mfi_dequeue_free(sc)) == NULL) {
mtx_unlock(&sc->mfi_io_lock);
return (EBUSY);
}
cm->cm_frame = (union mfi_frame *)((uintptr_t)sc->mfi_tb_init);
cm->cm_frame_busaddr = sc->mfi_tb_init_busaddr;
cm->cm_dmamap = sc->mfi_tb_init_dmamap;
cm->cm_frame->header.context = 0;
cm->cm_sc = sc;
cm->cm_index = 0;
/*
* Abuse the SG list area of the frame to hold the init_qinfo
* object;
*/
mfi_init = &cm->cm_frame->init;
bzero(mpi2IocInit, sizeof(struct MPI2_IOC_INIT_REQUEST));
mpi2IocInit->Function = MPI2_FUNCTION_IOC_INIT;
mpi2IocInit->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
/* set MsgVersion and HeaderVersion host driver was built with */
mpi2IocInit->MsgVersion = MPI2_VERSION;
mpi2IocInit->HeaderVersion = MPI2_HEADER_VERSION;
mpi2IocInit->SystemRequestFrameSize = sc->raid_io_msg_size/4;
mpi2IocInit->ReplyDescriptorPostQueueDepth
= (uint16_t)sc->mfi_max_fw_cmds;
mpi2IocInit->ReplyFreeQueueDepth = 0; /* Not supported by MR. */
/* Get physical address of reply frame pool */
offset = (uintptr_t) sc->reply_frame_pool_align
- (uintptr_t)sc->request_message_pool;
phyAddress = sc->mfi_tb_busaddr + offset;
mfiAddressTemp =
(MFI_ADDRESS *)&mpi2IocInit->ReplyDescriptorPostQueueAddress;
mfiAddressTemp->u.addressLow = (uint32_t)phyAddress;
mfiAddressTemp->u.addressHigh = (uint32_t)((uint64_t)phyAddress >> 32);
/* Get physical address of request message pool */
offset = sc->request_message_pool_align - sc->request_message_pool;
phyAddress = sc->mfi_tb_busaddr + offset;
mfiAddressTemp = (MFI_ADDRESS *)&mpi2IocInit->SystemRequestFrameBaseAddress;
mfiAddressTemp->u.addressLow = (uint32_t)phyAddress;
mfiAddressTemp->u.addressHigh = (uint32_t)((uint64_t)phyAddress >> 32);
mpi2IocInit->ReplyFreeQueueAddress = 0; /* Not supported by MR. */
mpi2IocInit->TimeStamp = time_uptime;
if (sc->verbuf) {
snprintf((char *)sc->verbuf, strlen(MEGASAS_VERSION) + 2, "%s\n",
MEGASAS_VERSION);
mfi_init->driver_ver_lo = (uint32_t)sc->verbuf_h_busaddr;
mfi_init->driver_ver_hi =
(uint32_t)((uint64_t)sc->verbuf_h_busaddr >> 32);
}
/* Get the physical address of the mpi2 ioc init command */
phyAddress = sc->mfi_tb_ioc_init_busaddr;
mfi_init->qinfo_new_addr_lo = (uint32_t)phyAddress;
mfi_init->qinfo_new_addr_hi = (uint32_t)((uint64_t)phyAddress >> 32);
mfi_init->header.flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
mfi_init->header.cmd = MFI_CMD_INIT;
mfi_init->header.data_len = sizeof(struct MPI2_IOC_INIT_REQUEST);
mfi_init->header.cmd_status = MFI_STAT_INVALID_STATUS;
cm->cm_data = NULL;
cm->cm_flags |= MFI_CMD_POLLED;
cm->cm_timestamp = time_uptime;
if ((error = mfi_mapcmd(sc, cm)) != 0) {
device_printf(sc->mfi_dev, "failed to send IOC init2 "
"command %d at %lx\n", error, (long)cm->cm_frame_busaddr);
mfi_release_command(cm);
mtx_unlock(&sc->mfi_io_lock);
return (error);
}
mfi_release_command(cm);
mtx_unlock(&sc->mfi_io_lock);
if (mfi_init->header.cmd_status == 0) {
sc->MFA_enabled = 1;
}
else {
device_printf(sc->mfi_dev, "Init command Failed %x\n",
mfi_init->header.cmd_status);
return 1;
}
return 0;
}
int
mfi_tbolt_alloc_cmd(struct mfi_softc *sc)
{
struct mfi_cmd_tbolt *cmd;
bus_addr_t io_req_base_phys;
uint8_t *io_req_base;
int i = 0, j = 0, offset = 0;
/*
* sc->mfi_cmd_pool_tbolt is an array of struct mfi_cmd_tbolt pointers.
* Allocate the dynamic array first and then allocate individual
* commands.
*/
sc->request_desc_pool = malloc(sizeof(
union mfi_mpi2_request_descriptor) * sc->mfi_max_fw_cmds,
M_MFIBUF, M_NOWAIT|M_ZERO);
sc->mfi_cmd_pool_tbolt = malloc(sizeof(struct mfi_cmd_tbolt*)
* sc->mfi_max_fw_cmds, M_MFIBUF, M_NOWAIT|M_ZERO);
if (!sc->mfi_cmd_pool_tbolt) {
device_printf(sc->mfi_dev, "out of memory. Could not alloc "
"memory for cmd_list_fusion\n");
return 1;
}
for (i = 0; i < sc->mfi_max_fw_cmds; i++) {
sc->mfi_cmd_pool_tbolt[i] = malloc(sizeof(
struct mfi_cmd_tbolt),M_MFIBUF, M_NOWAIT|M_ZERO);
if (!sc->mfi_cmd_pool_tbolt[i]) {
device_printf(sc->mfi_dev, "Could not alloc cmd list "
"fusion\n");
for (j = 0; j < i; j++)
free(sc->mfi_cmd_pool_tbolt[j], M_MFIBUF);
free(sc->mfi_cmd_pool_tbolt, M_MFIBUF);
sc->mfi_cmd_pool_tbolt = NULL;
}
}
/*
* The first 256 bytes (SMID 0) is not used. Don't add to the cmd
*list
*/
io_req_base = sc->request_message_pool_align
+ MEGASAS_THUNDERBOLT_NEW_MSG_SIZE;
io_req_base_phys = sc->request_msg_busaddr
+ MEGASAS_THUNDERBOLT_NEW_MSG_SIZE;
/*
* Add all the commands to command pool (instance->cmd_pool)
*/
/* SMID 0 is reserved. Set SMID/index from 1 */
for (i = 0; i < sc->mfi_max_fw_cmds; i++) {
cmd = sc->mfi_cmd_pool_tbolt[i];
offset = MEGASAS_THUNDERBOLT_NEW_MSG_SIZE * i;
cmd->index = i + 1;
cmd->request_desc = (union mfi_mpi2_request_descriptor *)
(sc->request_desc_pool + i);
cmd->io_request = (struct mfi_mpi2_request_raid_scsi_io *)
(io_req_base + offset);
cmd->io_request_phys_addr = io_req_base_phys + offset;
cmd->sg_frame = (MPI2_SGE_IO_UNION *)(sc->reply_pool_limit
+ i * MEGASAS_MAX_SZ_CHAIN_FRAME);
cmd->sg_frame_phys_addr = sc->sg_frame_busaddr + i
* MEGASAS_MAX_SZ_CHAIN_FRAME;
cmd->sync_cmd_idx = sc->mfi_max_fw_cmds;
TAILQ_INSERT_TAIL(&(sc->mfi_cmd_tbolt_tqh), cmd, next);
}
return 0;
}
int
mfi_tbolt_reset(struct mfi_softc *sc)
{
uint32_t fw_state;
mtx_lock(&sc->mfi_io_lock);
if (sc->hw_crit_error) {
device_printf(sc->mfi_dev, "HW CRITICAL ERROR\n");
mtx_unlock(&sc->mfi_io_lock);
return 1;
}
if (sc->mfi_flags & MFI_FLAGS_TBOLT) {
fw_state = sc->mfi_read_fw_status(sc);
if ((fw_state & MFI_FWSTATE_FAULT) == MFI_FWSTATE_FAULT) {
if ((sc->disableOnlineCtrlReset == 0)
&& (sc->adpreset == 0)) {
device_printf(sc->mfi_dev, "Adapter RESET "
"condition is detected\n");
sc->adpreset = 1;
sc->issuepend_done = 0;
sc->MFA_enabled = 0;
sc->last_reply_idx = 0;
mfi_process_fw_state_chg_isr((void *) sc);
}
mtx_unlock(&sc->mfi_io_lock);
return 0;
}
}
mtx_unlock(&sc->mfi_io_lock);
return 1;
}
/*
* mfi_intr_tbolt - isr entry point
*/
void
mfi_intr_tbolt(void *arg)
{
struct mfi_softc *sc = (struct mfi_softc *)arg;
if (sc->mfi_check_clear_intr(sc) == 1) {
return;
}
if (sc->mfi_detaching)
return;
mtx_lock(&sc->mfi_io_lock);
mfi_tbolt_complete_cmd(sc);
if (sc->mfi_flags & MFI_FLAGS_QFRZN)
sc->mfi_flags &= ~MFI_FLAGS_QFRZN;
mfi_startio(sc);
mtx_unlock(&sc->mfi_io_lock);
return;
}
/*
* map_cmd_status - Maps FW cmd status to OS cmd status
* @cmd : Pointer to cmd
* @status : status of cmd returned by FW
* @ext_status : ext status of cmd returned by FW
*/
void
map_tbolt_cmd_status(struct mfi_command *mfi_cmd, uint8_t status,
uint8_t ext_status)
{
switch (status) {
case MFI_STAT_OK:
mfi_cmd->cm_frame->header.cmd_status = MFI_STAT_OK;
mfi_cmd->cm_frame->dcmd.header.cmd_status = MFI_STAT_OK;
mfi_cmd->cm_error = MFI_STAT_OK;
break;
case MFI_STAT_SCSI_IO_FAILED:
case MFI_STAT_LD_INIT_IN_PROGRESS:
mfi_cmd->cm_frame->header.cmd_status = status;
mfi_cmd->cm_frame->header.scsi_status = ext_status;
mfi_cmd->cm_frame->dcmd.header.cmd_status = status;
mfi_cmd->cm_frame->dcmd.header.scsi_status
= ext_status;
break;
case MFI_STAT_SCSI_DONE_WITH_ERROR:
mfi_cmd->cm_frame->header.cmd_status = ext_status;
mfi_cmd->cm_frame->dcmd.header.cmd_status = ext_status;
break;
case MFI_STAT_LD_OFFLINE:
case MFI_STAT_DEVICE_NOT_FOUND:
mfi_cmd->cm_frame->header.cmd_status = status;
mfi_cmd->cm_frame->dcmd.header.cmd_status = status;
break;
default:
mfi_cmd->cm_frame->header.cmd_status = status;
mfi_cmd->cm_frame->dcmd.header.cmd_status = status;
break;
}
}
/*
* mfi_tbolt_return_cmd - Return a cmd to free command pool
* @instance: Adapter soft state
* @cmd: Command packet to be returned to free command pool
*/
static inline void
mfi_tbolt_return_cmd(struct mfi_softc *sc, struct mfi_cmd_tbolt *cmd)
{
mtx_assert(&sc->mfi_io_lock, MA_OWNED);
cmd->sync_cmd_idx = sc->mfi_max_fw_cmds;
TAILQ_INSERT_TAIL(&sc->mfi_cmd_tbolt_tqh, cmd, next);
}
void
mfi_tbolt_complete_cmd(struct mfi_softc *sc)
{
struct mfi_mpi2_reply_header *desc, *reply_desc;
struct mfi_command *cmd_mfi, *cmd_mfi_check; /* For MFA Cmds */
struct mfi_cmd_tbolt *cmd_tbolt;
uint16_t smid;
uint8_t reply_descript_type;
struct mfi_mpi2_request_raid_scsi_io *scsi_io_req;
uint32_t status, extStatus;
uint16_t num_completed;
union desc_value val;
desc = (struct mfi_mpi2_reply_header *)
((uintptr_t)sc->reply_frame_pool_align
+ sc->last_reply_idx * sc->reply_size);
reply_desc = desc;
if (!reply_desc)
device_printf(sc->mfi_dev, "reply desc is NULL!!\n");
reply_descript_type = reply_desc->ReplyFlags
& MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
return;
num_completed = 0;
val.word = ((union mfi_mpi2_reply_descriptor *)desc)->words;
/* Read Reply descriptor */
while ((val.u.low != 0xFFFFFFFF) && (val.u.high != 0xFFFFFFFF)) {
smid = reply_desc->SMID;
if (!smid || smid > sc->mfi_max_fw_cmds + 1) {
device_printf(sc->mfi_dev, "smid is %x. Cannot "
"proceed. Returning \n", smid);
return;
}
cmd_tbolt = sc->mfi_cmd_pool_tbolt[smid - 1];
cmd_mfi = &sc->mfi_commands[cmd_tbolt->sync_cmd_idx];
scsi_io_req = cmd_tbolt->io_request;
status = cmd_mfi->cm_frame->dcmd.header.cmd_status;
extStatus = cmd_mfi->cm_frame->dcmd.header.scsi_status;
map_tbolt_cmd_status(cmd_mfi, status, extStatus);
if (cmd_mfi->cm_flags & MFI_CMD_SCSI &&
(cmd_mfi->cm_flags & MFI_CMD_POLLED) != 0) {
/* polled LD/SYSPD IO command */
mfi_tbolt_return_cmd(sc, cmd_tbolt);
/* XXX mark okay for now DJA */
cmd_mfi->cm_frame->header.cmd_status = MFI_STAT_OK;
} else {
/* remove command from busy queue if not polled */
TAILQ_FOREACH(cmd_mfi_check, &sc->mfi_busy, cm_link) {
if (cmd_mfi_check == cmd_mfi) {
mfi_remove_busy(cmd_mfi);
break;
}
}
/* complete the command */
mfi_complete(sc, cmd_mfi);
mfi_tbolt_return_cmd(sc, cmd_tbolt);
}
sc->last_reply_idx++;
if (sc->last_reply_idx >= sc->mfi_max_fw_cmds) {
MFI_WRITE4(sc, MFI_RPI, sc->last_reply_idx);
sc->last_reply_idx = 0;
}
/*set it back to all 0xfff.*/
((union mfi_mpi2_reply_descriptor*)desc)->words =
~((uint64_t)0x00);
num_completed++;
/* Get the next reply descriptor */
desc = (struct mfi_mpi2_reply_header *)
((uintptr_t)sc->reply_frame_pool_align
+ sc->last_reply_idx * sc->reply_size);
reply_desc = desc;
val.word = ((union mfi_mpi2_reply_descriptor*)desc)->words;
reply_descript_type = reply_desc->ReplyFlags
& MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
break;
}
if (!num_completed)
return;
/* update replyIndex to FW */
if (sc->last_reply_idx)
MFI_WRITE4(sc, MFI_RPI, sc->last_reply_idx);
return;
}
/*
* mfi_get_cmd - Get a command from the free pool
* @instance: Adapter soft state
*
* Returns a free command from the pool
*/
struct mfi_cmd_tbolt *
mfi_tbolt_get_cmd(struct mfi_softc *sc)
{
struct mfi_cmd_tbolt *cmd = NULL;
mtx_assert(&sc->mfi_io_lock, MA_OWNED);
cmd = TAILQ_FIRST(&sc->mfi_cmd_tbolt_tqh);
TAILQ_REMOVE(&sc->mfi_cmd_tbolt_tqh, cmd, next);
memset((uint8_t *)cmd->sg_frame, 0, MEGASAS_MAX_SZ_CHAIN_FRAME);
memset((uint8_t *)cmd->io_request, 0,
MEGASAS_THUNDERBOLT_NEW_MSG_SIZE);
return cmd;
}
union mfi_mpi2_request_descriptor *
mfi_tbolt_get_request_descriptor(struct mfi_softc *sc, uint16_t index)
{
uint8_t *p;
if (index >= sc->mfi_max_fw_cmds) {
device_printf(sc->mfi_dev, "Invalid SMID (0x%x)request "
"for descriptor\n", index);
return NULL;
}
p = sc->request_desc_pool + sizeof(union mfi_mpi2_request_descriptor)
* index;
memset(p, 0, sizeof(union mfi_mpi2_request_descriptor));
return (union mfi_mpi2_request_descriptor *)p;
}
/* Used to build IOCTL cmd */
uint8_t
mfi_build_mpt_pass_thru(struct mfi_softc *sc, struct mfi_command *mfi_cmd)
{
MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
struct mfi_mpi2_request_raid_scsi_io *io_req;
struct mfi_cmd_tbolt *cmd;
cmd = mfi_tbolt_get_cmd(sc);
if (!cmd)
return EBUSY;
mfi_cmd->cm_extra_frames = cmd->index; /* Frame count used as SMID */
cmd->sync_cmd_idx = mfi_cmd->cm_index;
io_req = cmd->io_request;
mpi25_ieee_chain = (MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
io_req->Function = MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
io_req->SGLOffset0 = offsetof(struct mfi_mpi2_request_raid_scsi_io,
SGL) / 4;
io_req->ChainOffset = sc->chain_offset_value_for_mpt_ptmsg;
mpi25_ieee_chain->Address = mfi_cmd->cm_frame_busaddr;
/*
In MFI pass thru, nextChainOffset will always be zero to
indicate the end of the chain.
*/
mpi25_ieee_chain->Flags= MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT
| MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
/* setting the length to the maximum length */
mpi25_ieee_chain->Length = 1024;
return 0;
}
void
mfi_tbolt_build_ldio(struct mfi_softc *sc, struct mfi_command *mfi_cmd,
struct mfi_cmd_tbolt *cmd)
{
uint32_t start_lba_lo = 0, start_lba_hi = 0, device_id;
struct mfi_mpi2_request_raid_scsi_io *io_request;
struct IO_REQUEST_INFO io_info;
device_id = mfi_cmd->cm_frame->io.header.target_id;
io_request = cmd->io_request;
io_request->RaidContext.TargetID = device_id;
io_request->RaidContext.Status = 0;
io_request->RaidContext.exStatus =0;
start_lba_lo = mfi_cmd->cm_frame->io.lba_lo;
start_lba_hi = mfi_cmd->cm_frame->io.lba_hi;
memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
io_info.ldStartBlock = ((uint64_t)start_lba_hi << 32) | start_lba_lo;
io_info.numBlocks = mfi_cmd->cm_frame->io.header.data_len;
io_info.ldTgtId = device_id;
if ((mfi_cmd->cm_frame->header.flags & MFI_FRAME_DIR_READ) ==
MFI_FRAME_DIR_READ)
io_info.isRead = 1;
io_request->RaidContext.timeoutValue
= MFI_FUSION_FP_DEFAULT_TIMEOUT;
io_request->Function = MPI2_FUNCTION_LD_IO_REQUEST;
io_request->DevHandle = device_id;
cmd->request_desc->header.RequestFlags
= (MFI_REQ_DESCRIPT_FLAGS_LD_IO
<< MFI_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
if ((io_request->IoFlags == 6) && (io_info.numBlocks == 0))
io_request->RaidContext.RegLockLength = 0x100;
io_request->DataLength = mfi_cmd->cm_frame->io.header.data_len
* MFI_SECTOR_LEN;
}
int
mfi_tbolt_build_io(struct mfi_softc *sc, struct mfi_command *mfi_cmd,
struct mfi_cmd_tbolt *cmd)
{
struct mfi_mpi2_request_raid_scsi_io *io_request;
uint32_t sge_count;
uint8_t cdb_len;
int readop;
u_int64_t lba;
io_request = cmd->io_request;
if (!(mfi_cmd->cm_frame->header.cmd == MFI_CMD_LD_READ
|| mfi_cmd->cm_frame->header.cmd == MFI_CMD_LD_WRITE))
return 1;
mfi_tbolt_build_ldio(sc, mfi_cmd, cmd);
/* Convert to SCSI command CDB */
bzero(io_request->CDB.CDB32, sizeof(io_request->CDB.CDB32));
if (mfi_cmd->cm_frame->header.cmd == MFI_CMD_LD_WRITE)
readop = 0;
else
readop = 1;
lba = mfi_cmd->cm_frame->io.lba_hi;
lba = (lba << 32) + mfi_cmd->cm_frame->io.lba_lo;
cdb_len = mfi_build_cdb(readop, 0, lba,
mfi_cmd->cm_frame->io.header.data_len, io_request->CDB.CDB32);
/* Just the CDB length, rest of the Flags are zero */
io_request->IoFlags = cdb_len;
/*
* Construct SGL
*/
sge_count = mfi_tbolt_make_sgl(sc, mfi_cmd,
(pMpi25IeeeSgeChain64_t) &io_request->SGL, cmd);
if (sge_count > sc->mfi_max_sge) {
device_printf(sc->mfi_dev, "Error. sge_count (0x%x) exceeds "
"max (0x%x) allowed\n", sge_count, sc->mfi_max_sge);
return 1;
}
io_request->RaidContext.numSGE = sge_count;
io_request->SGLFlags = MPI2_SGE_FLAGS_64_BIT_ADDRESSING;
if (mfi_cmd->cm_frame->header.cmd == MFI_CMD_LD_WRITE)
io_request->Control = MPI2_SCSIIO_CONTROL_WRITE;
else
io_request->Control = MPI2_SCSIIO_CONTROL_READ;
io_request->SGLOffset0 = offsetof(
struct mfi_mpi2_request_raid_scsi_io, SGL)/4;
io_request->SenseBufferLowAddress = mfi_cmd->cm_sense_busaddr;
io_request->SenseBufferLength = MFI_SENSE_LEN;
io_request->RaidContext.Status = MFI_STAT_INVALID_STATUS;
io_request->RaidContext.exStatus = MFI_STAT_INVALID_STATUS;
return 0;
}
static int
mfi_tbolt_make_sgl(struct mfi_softc *sc, struct mfi_command *mfi_cmd,
pMpi25IeeeSgeChain64_t sgl_ptr, struct mfi_cmd_tbolt *cmd)
{
uint8_t i, sg_processed, sg_to_process;
uint8_t sge_count, sge_idx;
union mfi_sgl *os_sgl;
/*
* Return 0 if there is no data transfer
*/
if (!mfi_cmd->cm_sg || !mfi_cmd->cm_len) {
device_printf(sc->mfi_dev, "Buffer empty \n");
return 0;
}
os_sgl = mfi_cmd->cm_sg;
sge_count = mfi_cmd->cm_frame->header.sg_count;
if (sge_count > sc->mfi_max_sge) {
device_printf(sc->mfi_dev, "sgl ptr %p sg_cnt %d \n",
os_sgl, sge_count);
return sge_count;
}
if (sge_count > sc->max_SGEs_in_main_message)
/* One element to store the chain info */
sge_idx = sc->max_SGEs_in_main_message - 1;
else
sge_idx = sge_count;
for (i = 0; i < sge_idx; i++) {
/*
* For 32bit BSD we are getting 32 bit SGL's from OS
* but FW only take 64 bit SGL's so copying from 32 bit
* SGL's to 64.
*/
if (sc->mfi_flags & MFI_FLAGS_SKINNY) {
sgl_ptr->Length = os_sgl->sg_skinny[i].len;
sgl_ptr->Address = os_sgl->sg_skinny[i].addr;
} else {
sgl_ptr->Length = os_sgl->sg32[i].len;
sgl_ptr->Address = os_sgl->sg32[i].addr;
}
sgl_ptr->Flags = 0;
sgl_ptr++;
cmd->io_request->ChainOffset = 0;
}
sg_processed = i;
if (sg_processed < sge_count) {
pMpi25IeeeSgeChain64_t sg_chain;
sg_to_process = sge_count - sg_processed;
cmd->io_request->ChainOffset =
sc->chain_offset_value_for_main_message;
sg_chain = sgl_ptr;
/* Prepare chain element */
sg_chain->NextChainOffset = 0;
sg_chain->Flags = (MPI2_IEEE_SGE_FLAGS_CHAIN_ELEMENT |
MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
sg_chain->Length = (sizeof(MPI2_SGE_IO_UNION) *
(sge_count - sg_processed));
sg_chain->Address = cmd->sg_frame_phys_addr;
sgl_ptr = (pMpi25IeeeSgeChain64_t)cmd->sg_frame;
for (; i < sge_count; i++) {
if (sc->mfi_flags & MFI_FLAGS_SKINNY) {
sgl_ptr->Length = os_sgl->sg_skinny[i].len;
sgl_ptr->Address = os_sgl->sg_skinny[i].addr;
} else {
sgl_ptr->Length = os_sgl->sg32[i].len;
sgl_ptr->Address = os_sgl->sg32[i].addr;
}
sgl_ptr->Flags = 0;
sgl_ptr++;
}
}
return sge_count;
}
union mfi_mpi2_request_descriptor *
mfi_build_and_issue_cmd(struct mfi_softc *sc, struct mfi_command *mfi_cmd)
{
struct mfi_cmd_tbolt *cmd;
union mfi_mpi2_request_descriptor *req_desc = NULL;
uint16_t index;
cmd = mfi_tbolt_get_cmd(sc);
if (!cmd)
return NULL;
mfi_cmd->cm_extra_frames = cmd->index;
cmd->sync_cmd_idx = mfi_cmd->cm_index;
index = cmd->index;
req_desc = mfi_tbolt_get_request_descriptor(sc, index-1);
if (mfi_tbolt_build_io(sc, mfi_cmd, cmd))
return NULL;
req_desc->header.SMID = index;
return req_desc;
}
union mfi_mpi2_request_descriptor *
mfi_tbolt_build_mpt_cmd(struct mfi_softc *sc, struct mfi_command *cmd)
{
union mfi_mpi2_request_descriptor *req_desc = NULL;
uint16_t index;
if (mfi_build_mpt_pass_thru(sc, cmd)) {
device_printf(sc->mfi_dev, "Couldn't build MFI pass thru "
"cmd\n");
return NULL;
}
/* For fusion the frame_count variable is used for SMID */
index = cmd->cm_extra_frames;
req_desc = mfi_tbolt_get_request_descriptor(sc, index - 1);
if (!req_desc)
return NULL;
bzero(req_desc, sizeof(*req_desc));
req_desc->header.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
MFI_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
req_desc->header.SMID = index;
return req_desc;
}
int
mfi_tbolt_send_frame(struct mfi_softc *sc, struct mfi_command *cm)
{
struct mfi_frame_header *hdr;
uint8_t *cdb;
union mfi_mpi2_request_descriptor *req_desc = NULL;
int tm = MFI_POLL_TIMEOUT_SECS * 1000;
hdr = &cm->cm_frame->header;
cdb = cm->cm_frame->pass.cdb;
if (sc->adpreset)
return 1;
if ((cm->cm_flags & MFI_CMD_POLLED) == 0) {
cm->cm_timestamp = time_uptime;
mfi_enqueue_busy(cm);
} else { /* still get interrupts for it */
hdr->cmd_status = MFI_STAT_INVALID_STATUS;
hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
}
if (hdr->cmd == MFI_CMD_PD_SCSI_IO) {
/* check for inquiry commands coming from CLI */
if (cdb[0] != 0x28 || cdb[0] != 0x2A) {
if ((req_desc = mfi_tbolt_build_mpt_cmd(sc, cm)) ==
NULL) {
device_printf(sc->mfi_dev, "Mapping from MFI "
"to MPT Failed \n");
return 1;
}
}
else
device_printf(sc->mfi_dev, "DJA NA XXX SYSPDIO\n");
} else if (hdr->cmd == MFI_CMD_LD_SCSI_IO ||
hdr->cmd == MFI_CMD_LD_READ || hdr->cmd == MFI_CMD_LD_WRITE) {
cm->cm_flags |= MFI_CMD_SCSI;
if ((req_desc = mfi_build_and_issue_cmd(sc, cm)) == NULL) {
device_printf(sc->mfi_dev, "LDIO Failed \n");
return 1;
}
} else if ((req_desc = mfi_tbolt_build_mpt_cmd(sc, cm)) == NULL) {
device_printf(sc->mfi_dev, "Mapping from MFI to MPT "
"Failed\n");
return 1;
}
if (cm->cm_flags & MFI_CMD_SCSI) {
/*
* LD IO needs to be posted since it doesn't get
* acknowledged via a status update so have the
* controller reply via mfi_tbolt_complete_cmd.
*/
hdr->flags &= ~MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
}
MFI_WRITE4(sc, MFI_ILQP, (req_desc->words & 0xFFFFFFFF));
MFI_WRITE4(sc, MFI_IHQP, (req_desc->words >>0x20));
if ((cm->cm_flags & MFI_CMD_POLLED) == 0)
return 0;
if (cm->cm_flags & MFI_CMD_SCSI) {
/* check reply queue */
mfi_tbolt_complete_cmd(sc);
}
/* This is a polled command, so busy-wait for it to complete. */
while (hdr->cmd_status == MFI_STAT_INVALID_STATUS) {
DELAY(1000);
tm -= 1;
if (tm <= 0)
break;
if (cm->cm_flags & MFI_CMD_SCSI) {
/* check reply queue */
mfi_tbolt_complete_cmd(sc);
}
}
if (hdr->cmd_status == MFI_STAT_INVALID_STATUS) {
device_printf(sc->mfi_dev, "Frame %p timed out "
"command 0x%X\n", hdr, cm->cm_frame->dcmd.opcode);
return (ETIMEDOUT);
}
return 0;
}
static void
mfi_issue_pending_cmds_again (struct mfi_softc *sc)
{
struct mfi_command *cm, *tmp;
mtx_assert(&sc->mfi_io_lock, MA_OWNED);
TAILQ_FOREACH_REVERSE_SAFE(cm, &sc->mfi_busy, BUSYQ, cm_link, tmp) {
cm->retry_for_fw_reset++;
/*
* If a command has continuously been tried multiple times
* and causing a FW reset condition, no further recoveries
* should be performed on the controller
*/
if (cm->retry_for_fw_reset == 3) {
device_printf(sc->mfi_dev, "megaraid_sas: command %d "
"was tried multiple times during adapter reset"
"Shutting down the HBA\n", cm->cm_index);
mfi_kill_hba(sc);
sc->hw_crit_error = 1;
return;
}
if ((cm->cm_flags & MFI_ON_MFIQ_BUSY) != 0) {
struct mfi_cmd_tbolt *cmd;
mfi_remove_busy(cm);
cmd = sc->mfi_cmd_pool_tbolt[cm->cm_extra_frames -
1 ];
mfi_tbolt_return_cmd(sc, cmd);
if ((cm->cm_flags & MFI_ON_MFIQ_MASK) == 0) {
if (cm->cm_frame->dcmd.opcode !=
MFI_DCMD_CTRL_EVENT_WAIT) {
device_printf(sc->mfi_dev,
"APJ ****requeue command %d \n",
cm->cm_index);
mfi_requeue_ready(cm);
}
}
else
mfi_release_command(cm);
}
}
mfi_startio(sc);
}
static void
mfi_kill_hba (struct mfi_softc *sc)
{
if (sc->mfi_flags & MFI_FLAGS_TBOLT)
MFI_WRITE4 (sc, 0x00,MFI_STOP_ADP);
else
MFI_WRITE4 (sc, MFI_IDB,MFI_STOP_ADP);
}
static void
mfi_process_fw_state_chg_isr(void *arg)
{
struct mfi_softc *sc= (struct mfi_softc *)arg;
struct mfi_cmd_tbolt *cmd;
int error, status;
if (sc->adpreset == 1) {
device_printf(sc->mfi_dev, "First stage of FW reset "
"initiated...\n");
sc->mfi_adp_reset(sc);
sc->mfi_enable_intr(sc);
device_printf(sc->mfi_dev, "First stage of reset complete, "
"second stage initiated...\n");
sc->adpreset = 2;
/* waiting for about 20 second before start the second init */
for (int wait = 0; wait < 20000; wait++)
DELAY(1000);
device_printf(sc->mfi_dev, "Second stage of FW reset "
"initiated...\n");
while ((status = MFI_READ4(sc, MFI_RSR)) & 0x04);
sc->mfi_disable_intr(sc);
/* We expect the FW state to be READY */
if (mfi_transition_firmware(sc)) {
device_printf(sc->mfi_dev, "controller is not in "
"ready state\n");
mfi_kill_hba(sc);
sc->hw_crit_error= 1;
return ;
}
if ((error = mfi_tbolt_init_MFI_queue(sc)) != 0)
return;
mtx_lock(&sc->mfi_io_lock);
sc->mfi_enable_intr(sc);
sc->adpreset = 0;
free(sc->mfi_aen_cm->cm_data, M_MFIBUF);
mfi_remove_busy(sc->mfi_aen_cm);
cmd = sc->mfi_cmd_pool_tbolt[sc->mfi_aen_cm->cm_extra_frames
- 1];
mfi_tbolt_return_cmd(sc, cmd);
if (sc->mfi_aen_cm) {
mfi_release_command(sc->mfi_aen_cm);
sc->mfi_aen_cm = NULL;
}
if (sc->mfi_map_sync_cm) {
mfi_release_command(sc->mfi_map_sync_cm);
sc->mfi_map_sync_cm = NULL;
}
mfi_issue_pending_cmds_again(sc);
/*
* Issue pending command can result in adapter being marked
* dead because of too many re-tries. Check for that
* condition before clearing the reset condition on the FW
*/
if (!sc->hw_crit_error) {
/*
* Initiate AEN (Asynchronous Event Notification)
*/
mfi_aen_setup(sc, sc->last_seq_num);
sc->issuepend_done = 1;
device_printf(sc->mfi_dev, "second stage of reset "
"complete, FW is ready now.\n");
} else {
device_printf(sc->mfi_dev, "second stage of reset "
"never completed, hba was marked offline.\n");
}
} else {
device_printf(sc->mfi_dev, "mfi_process_fw_state_chg_isr "
"called with unhandled value:%d\n", sc->adpreset);
}
mtx_unlock(&sc->mfi_io_lock);
}
/*
* The ThunderBolt HW has an option for the driver to directly
* access the underlying disks and operate on the RAID. To
* do this there needs to be a capability to keep the RAID controller
* and driver in sync. The FreeBSD driver does not take advantage
* of this feature since it adds a lot of complexity and slows down
* performance. Performance is gained by using the controller's
* cache etc.
*
* Even though this driver doesn't access the disks directly, an
* AEN like command is used to inform the RAID firmware to "sync"
* with all LD's via the MFI_DCMD_LD_MAP_GET_INFO command. This
* command in write mode will return when the RAID firmware has
* detected a change to the RAID state. Examples of this type
* of change are removing a disk. Once the command returns then
* the driver needs to acknowledge this and "sync" all LD's again.
* This repeats until we shutdown. Then we need to cancel this
* pending command.
*
* If this is not done right the RAID firmware will not remove a
* pulled drive and the RAID won't go degraded etc. Effectively,
* stopping any RAID mangement to functions.
*
* Doing another LD sync, requires the use of an event since the
* driver needs to do a mfi_wait_command and can't do that in an
* interrupt thread.
*
* The driver could get the RAID state via the MFI_DCMD_LD_MAP_GET_INFO
* That requires a bunch of structure and it is simplier to just do
* the MFI_DCMD_LD_GET_LIST versus walking the RAID map.
*/
void
mfi_tbolt_sync_map_info(struct mfi_softc *sc)
{
int error = 0, i;
struct mfi_command *cmd;
struct mfi_dcmd_frame *dcmd;
uint32_t context = 0;
union mfi_ld_ref *ld_sync;
size_t ld_size;
struct mfi_frame_header *hdr;
struct mfi_command *cm = NULL;
struct mfi_ld_list *list = NULL;
if (sc->mfi_map_sync_cm != NULL || sc->cm_map_abort)
return;
mtx_lock(&sc->mfi_io_lock);
error = mfi_dcmd_command(sc, &cm, MFI_DCMD_LD_GET_LIST,
(void **)&list, sizeof(*list));
if (error)
goto out;
cm->cm_flags = MFI_CMD_POLLED | MFI_CMD_DATAIN;
if (mfi_wait_command(sc, cm) != 0) {
device_printf(sc->mfi_dev, "Failed to get device listing\n");
goto out;
}
hdr = &cm->cm_frame->header;
if (hdr->cmd_status != MFI_STAT_OK) {
device_printf(sc->mfi_dev, "MFI_DCMD_LD_GET_LIST failed %x\n",
hdr->cmd_status);
goto out;
}
ld_size = sizeof(*ld_sync) * list->ld_count;
mtx_unlock(&sc->mfi_io_lock);
ld_sync = (union mfi_ld_ref *) malloc(ld_size, M_MFIBUF,
M_WAITOK | M_ZERO);
if (ld_sync == NULL) {
device_printf(sc->mfi_dev, "Failed to allocate sync\n");
goto out;
}
for (i = 0; i < list->ld_count; i++) {
ld_sync[i].ref = list->ld_list[i].ld.ref;
}
mtx_lock(&sc->mfi_io_lock);
if ((cmd = mfi_dequeue_free(sc)) == NULL) {
device_printf(sc->mfi_dev, "Failed to get command\n");
free(ld_sync, M_MFIBUF);
goto out;
}
context = cmd->cm_frame->header.context;
bzero(cmd->cm_frame, sizeof(union mfi_frame));
cmd->cm_frame->header.context = context;
dcmd = &cmd->cm_frame->dcmd;
bzero(dcmd->mbox, MFI_MBOX_SIZE);
dcmd->header.cmd = MFI_CMD_DCMD;
dcmd->header.flags = MFI_FRAME_DIR_WRITE;
dcmd->header.timeout = 0;
dcmd->header.data_len = ld_size;
dcmd->header.scsi_status = 0;
dcmd->opcode = MFI_DCMD_LD_MAP_GET_INFO;
cmd->cm_sg = &dcmd->sgl;
cmd->cm_total_frame_size = MFI_DCMD_FRAME_SIZE;
cmd->cm_data = ld_sync;
cmd->cm_private = ld_sync;
cmd->cm_len = ld_size;
cmd->cm_complete = mfi_sync_map_complete;
sc->mfi_map_sync_cm = cmd;
cmd->cm_flags = MFI_CMD_DATAOUT;
cmd->cm_frame->dcmd.mbox[0] = list->ld_count;
cmd->cm_frame->dcmd.mbox[1] = MFI_DCMD_MBOX_PEND_FLAG;
if ((error = mfi_mapcmd(sc, cmd)) != 0) {
device_printf(sc->mfi_dev, "failed to send map sync\n");
free(ld_sync, M_MFIBUF);
sc->mfi_map_sync_cm = NULL;
mfi_requeue_ready(cmd);
goto out;
}
out:
if (list)
free(list, M_MFIBUF);
if (cm)
mfi_release_command(cm);
mtx_unlock(&sc->mfi_io_lock);
}
static void
mfi_sync_map_complete(struct mfi_command *cm)
{
struct mfi_frame_header *hdr;
struct mfi_softc *sc;
int aborted = 0;
sc = cm->cm_sc;
mtx_assert(&sc->mfi_io_lock, MA_OWNED);
hdr = &cm->cm_frame->header;
if (sc->mfi_map_sync_cm == NULL)
return;
if (sc->cm_map_abort ||
hdr->cmd_status == MFI_STAT_INVALID_STATUS) {
sc->cm_map_abort = 0;
aborted = 1;
}
free(cm->cm_data, M_MFIBUF);
sc->mfi_map_sync_cm = NULL;
wakeup(&sc->mfi_map_sync_cm);
mfi_release_command(cm);
/* set it up again so the driver can catch more events */
if (!aborted) {
mfi_queue_map_sync(sc);
}
}
static void
mfi_queue_map_sync(struct mfi_softc *sc)
{
mtx_assert(&sc->mfi_io_lock, MA_OWNED);
taskqueue_enqueue(taskqueue_swi, &sc->mfi_map_sync_task);
}
void
mfi_handle_map_sync(void *context, int pending)
{
struct mfi_softc *sc;
sc = context;
mfi_tbolt_sync_map_info(sc);
}