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scsi: mpi3mr: Add support for queue command processing

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Send Port Enable Request to FW for Device Discovery.  As part of port
enable completion driver calls scan_start and scan_finished hooks.  SCSI
layer references like sdev, starget, etc. are added but actual device
discovery will be supported once driver adds complete event process
handling.

Link: https://lore.kernel.org/r/20210520152545.2710479-5-kashyap.desai@broadcom.com
Cc: sathya.prakash@broadcom.com
Cc: hare@suse.de
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kashyap Desai 2021-05-20 20:55:25 +05:30 committed by Martin K. Petersen
parent c9566231cf
commit 023ab2a9b4
3 changed files with 927 additions and 2 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

51
drivers/scsi/mpi3mr/mpi3mr.h
View file

@ -99,6 +99,7 @@ extern struct list_head mrioc_list;
/* command/controller interaction timeout definitions in seconds */
#define MPI3MR_INTADMCMD_TIMEOUT 10
#define MPI3MR_PORTENABLE_TIMEOUT 300
#define MPI3MR_RESETTM_TIMEOUT 30
#define MPI3MR_DEFAULT_SHUTDOWN_TIME 120
@ -315,7 +316,43 @@ struct mpi3mr_intr_info {
char name[MPI3MR_NAME_LENGTH];
};
/**
* struct mpi3mr_stgt_priv_data - SCSI target private structure
*
* @starget: Scsi_target pointer
* @dev_handle: FW device handle
* @perst_id: FW assigned Persistent ID
* @num_luns: Number of Logical Units
* @block_io: I/O blocked to the device or not
* @dev_removed: Device removed in the Firmware
* @dev_removedelay: Device is waiting to be removed in FW
* @dev_type: Device type
* @tgt_dev: Internal target device pointer
*/
struct mpi3mr_stgt_priv_data {
struct scsi_target *starget;
u16 dev_handle;
u16 perst_id;
u32 num_luns;
atomic_t block_io;
u8 dev_removed;
u8 dev_removedelay;
u8 dev_type;
struct mpi3mr_tgt_dev *tgt_dev;
};
/**
* struct mpi3mr_stgt_priv_data - SCSI device private structure
*
* @tgt_priv_data: Scsi_target private data pointer
* @lun_id: LUN ID of the device
* @ncq_prio_enable: NCQ priority enable for SATA device
*/
struct mpi3mr_sdev_priv_data {
struct mpi3mr_stgt_priv_data *tgt_priv_data;
u32 lun_id;
u8 ncq_prio_enable;
};
/**
* struct mpi3mr_drv_cmd - Internal command tracker
@ -445,12 +482,16 @@ struct scmd_priv {
* @sbq_lock: Sense buffer queue lock
* @sbq_host_index: Sense buffer queuehost index
* @is_driver_loading: Is driver still loading
* @scan_started: Async scan started
* @scan_failed: Asycn scan failed
* @stop_drv_processing: Stop all command processing
* @max_host_ios: Maximum host I/O count
* @chain_buf_count: Chain buffer count
* @chain_buf_pool: Chain buffer pool
* @chain_sgl_list: Chain SGL list
* @chain_bitmap_sz: Chain buffer allocator bitmap size
* @chain_bitmap: Chain buffer allocator bitmap
* @chain_buf_lock: Chain buffer list lock
* @reset_in_progress: Reset in progress flag
* @unrecoverable: Controller unrecoverable flag
* @logging_level: Controller debug logging level
@ -535,6 +576,9 @@ struct mpi3mr_ioc {
u32 sbq_host_index;
u8 is_driver_loading;
u8 scan_started;
u16 scan_failed;
u8 stop_drv_processing;
u16 max_host_ios;
@ -543,6 +587,7 @@ struct mpi3mr_ioc {
struct chain_element *chain_sgl_list;
u16 chain_bitmap_sz;
void *chain_bitmap;
spinlock_t chain_buf_lock;
u8 reset_in_progress;
u8 unrecoverable;
@ -559,8 +604,11 @@ int mpi3mr_setup_resources(struct mpi3mr_ioc *mrioc);
void mpi3mr_cleanup_resources(struct mpi3mr_ioc *mrioc);
int mpi3mr_init_ioc(struct mpi3mr_ioc *mrioc);
void mpi3mr_cleanup_ioc(struct mpi3mr_ioc *mrioc);
int mpi3mr_issue_port_enable(struct mpi3mr_ioc *mrioc, u8 async);
int mpi3mr_admin_request_post(struct mpi3mr_ioc *mrioc, void *admin_req,
u16 admin_req_sz, u8 ignore_reset);
int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc,
struct op_req_qinfo *opreqq, u8 *req);
void mpi3mr_add_sg_single(void *paddr, u8 flags, u32 length,
dma_addr_t dma_addr);
void mpi3mr_build_zero_len_sge(void *paddr);
@ -571,6 +619,9 @@ void *mpi3mr_get_reply_virt_addr(struct mpi3mr_ioc *mrioc,
void mpi3mr_repost_sense_buf(struct mpi3mr_ioc *mrioc,
u64 sense_buf_dma);
void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
struct mpi3_default_reply_descriptor *reply_desc,
u64 *reply_dma, u16 qidx);
void mpi3mr_start_watchdog(struct mpi3mr_ioc *mrioc);
void mpi3mr_stop_watchdog(struct mpi3mr_ioc *mrioc);

244
drivers/scsi/mpi3mr/mpi3mr_fw.c
View file

@ -25,6 +25,22 @@ static inline void mpi3mr_writeq(__u64 b, volatile void __iomem *addr)
}
#endif
static inline bool
mpi3mr_check_req_qfull(struct op_req_qinfo *op_req_q)
{
u16 pi, ci, max_entries;
bool is_qfull = false;
pi = op_req_q->pi;
ci = READ_ONCE(op_req_q->ci);
max_entries = op_req_q->num_requests;
if ((ci == (pi + 1)) || ((!ci) && (pi == (max_entries - 1))))
is_qfull = true;
return is_qfull;
}
static void mpi3mr_sync_irqs(struct mpi3mr_ioc *mrioc)
{
u16 i, max_vectors;
@ -283,6 +299,83 @@ static int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc)
return num_admin_replies;
}
/**
* mpi3mr_get_reply_desc - get reply descriptor frame corresponding to
* queue's consumer index from operational reply descriptor queue.
* @op_reply_q: op_reply_qinfo object
* @reply_ci: operational reply descriptor's queue consumer index
*
* Returns reply descriptor frame address
*/
static inline struct mpi3_default_reply_descriptor *
mpi3mr_get_reply_desc(struct op_reply_qinfo *op_reply_q, u32 reply_ci)
{
void *segment_base_addr;
struct segments *segments = op_reply_q->q_segments;
struct mpi3_default_reply_descriptor *reply_desc = NULL;
segment_base_addr =
segments[reply_ci / op_reply_q->segment_qd].segment;
reply_desc = (struct mpi3_default_reply_descriptor *)segment_base_addr +
(reply_ci % op_reply_q->segment_qd);
return reply_desc;
}
static int mpi3mr_process_op_reply_q(struct mpi3mr_ioc *mrioc,
struct mpi3mr_intr_info *intr_info)
{
struct op_reply_qinfo *op_reply_q = intr_info->op_reply_q;
struct op_req_qinfo *op_req_q;
u32 exp_phase;
u32 reply_ci;
u32 num_op_reply = 0;
u64 reply_dma = 0;
struct mpi3_default_reply_descriptor *reply_desc;
u16 req_q_idx = 0, reply_qidx;
reply_qidx = op_reply_q->qid - 1;
exp_phase = op_reply_q->ephase;
reply_ci = op_reply_q->ci;
reply_desc = mpi3mr_get_reply_desc(op_reply_q, reply_ci);
if ((le16_to_cpu(reply_desc->reply_flags) &
MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) {
return 0;
}
do {
req_q_idx = le16_to_cpu(reply_desc->request_queue_id) - 1;
op_req_q = &mrioc->req_qinfo[req_q_idx];
WRITE_ONCE(op_req_q->ci, le16_to_cpu(reply_desc->request_queue_ci));
mpi3mr_process_op_reply_desc(mrioc, reply_desc, &reply_dma,
reply_qidx);
if (reply_dma)
mpi3mr_repost_reply_buf(mrioc, reply_dma);
num_op_reply++;
if (++reply_ci == op_reply_q->num_replies) {
reply_ci = 0;
exp_phase ^= 1;
}
reply_desc = mpi3mr_get_reply_desc(op_reply_q, reply_ci);
if ((le16_to_cpu(reply_desc->reply_flags) &
MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase)
break;
} while (1);
writel(reply_ci,
&mrioc->sysif_regs->oper_queue_indexes[reply_qidx].consumer_index);
op_reply_q->ci = reply_ci;
op_reply_q->ephase = exp_phase;
return num_op_reply;
}
static irqreturn_t mpi3mr_isr_primary(int irq, void *privdata)
{
struct mpi3mr_intr_info *intr_info = privdata;
@ -1302,6 +1395,74 @@ static int mpi3mr_create_op_queues(struct mpi3mr_ioc *mrioc)
return retval;
}
/**
* mpi3mr_op_request_post - Post request to operational queue
* @mrioc: Adapter reference
* @op_req_q: Operational request queue info
* @req: MPI3 request
*
* Post the MPI3 request into operational request queue and
* inform the controller, if the queue is full return
* appropriate error.
*
* Return: 0 on success, non-zero on failure.
*/
int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc,
struct op_req_qinfo *op_req_q, u8 *req)
{
u16 pi = 0, max_entries, reply_qidx = 0, midx;
int retval = 0;
unsigned long flags;
u8 *req_entry;
void *segment_base_addr;
u16 req_sz = mrioc->facts.op_req_sz;
struct segments *segments = op_req_q->q_segments;
reply_qidx = op_req_q->reply_qid - 1;
if (mrioc->unrecoverable)
return -EFAULT;
spin_lock_irqsave(&op_req_q->q_lock, flags);
pi = op_req_q->pi;
max_entries = op_req_q->num_requests;
if (mpi3mr_check_req_qfull(op_req_q)) {
midx = REPLY_QUEUE_IDX_TO_MSIX_IDX(
reply_qidx, mrioc->op_reply_q_offset);
mpi3mr_process_op_reply_q(mrioc, &mrioc->intr_info[midx]);
if (mpi3mr_check_req_qfull(op_req_q)) {
retval = -EAGAIN;
goto out;
}
}
if (mrioc->reset_in_progress) {
ioc_err(mrioc, "OpReqQ submit reset in progress\n");
retval = -EAGAIN;
goto out;
}
segment_base_addr = segments[pi / op_req_q->segment_qd].segment;
req_entry = (u8 *)segment_base_addr +
((pi % op_req_q->segment_qd) * req_sz);
memset(req_entry, 0, req_sz);
memcpy(req_entry, req, MPI3MR_ADMIN_REQ_FRAME_SZ);
if (++pi == max_entries)
pi = 0;
op_req_q->pi = pi;
writel(op_req_q->pi,
&mrioc->sysif_regs->oper_queue_indexes[reply_qidx].producer_index);
out:
spin_unlock_irqrestore(&op_req_q->q_lock, flags);
return retval;
}
/**
* mpi3mr_setup_admin_qpair - Setup admin queue pair
* @mrioc: Adapter instance reference
@ -1887,6 +2048,89 @@ static int mpi3mr_alloc_chain_bufs(struct mpi3mr_ioc *mrioc)
return retval;
}
/**
* mpi3mr_port_enable_complete - Mark port enable complete
* @mrioc: Adapter instance reference
* @drv_cmd: Internal command tracker
*
* Call back for asynchronous port enable request sets the
* driver command to indicate port enable request is complete.
*
* Return: Nothing
*/
static void mpi3mr_port_enable_complete(struct mpi3mr_ioc *mrioc,
struct mpi3mr_drv_cmd *drv_cmd)
{
drv_cmd->state = MPI3MR_CMD_NOTUSED;
drv_cmd->callback = NULL;
mrioc->scan_failed = drv_cmd->ioc_status;
mrioc->scan_started = 0;
}
/**
* mpi3mr_issue_port_enable - Issue Port Enable
* @mrioc: Adapter instance reference
* @async: Flag to wait for completion or not
*
* Issue Port Enable MPI request through admin queue and if the
* async flag is not set wait for the completion of the port
* enable or time out.
*
* Return: 0 on success, non-zero on failures.
*/
int mpi3mr_issue_port_enable(struct mpi3mr_ioc *mrioc, u8 async)
{
struct mpi3_port_enable_request pe_req;
int retval = 0;
u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT;
memset(&pe_req, 0, sizeof(pe_req));
mutex_lock(&mrioc->init_cmds.mutex);
if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) {
retval = -1;
ioc_err(mrioc, "Issue PortEnable: Init command is in use\n");
mutex_unlock(&mrioc->init_cmds.mutex);
goto out;
}
mrioc->init_cmds.state = MPI3MR_CMD_PENDING;
if (async) {
mrioc->init_cmds.is_waiting = 0;
mrioc->init_cmds.callback = mpi3mr_port_enable_complete;
} else {
mrioc->init_cmds.is_waiting = 1;
mrioc->init_cmds.callback = NULL;
init_completion(&mrioc->init_cmds.done);
}
pe_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS);
pe_req.function = MPI3_FUNCTION_PORT_ENABLE;
retval = mpi3mr_admin_request_post(mrioc, &pe_req, sizeof(pe_req), 1);
if (retval) {
ioc_err(mrioc, "Issue PortEnable: Admin Post failed\n");
goto out_unlock;
}
if (!async) {
wait_for_completion_timeout(&mrioc->init_cmds.done,
(pe_timeout * HZ));
if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) {
ioc_err(mrioc, "Issue PortEnable: command timed out\n");
retval = -1;
mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
mpi3mr_set_diagsave(mrioc);
mpi3mr_issue_reset(mrioc,
MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT,
MPI3MR_RESET_FROM_PE_TIMEOUT);
mrioc->unrecoverable = 1;
goto out_unlock;
}
mpi3mr_port_enable_complete(mrioc, &mrioc->init_cmds);
}
out_unlock:
mutex_unlock(&mrioc->init_cmds.mutex);
out:
return retval;
}
/**
* mpi3mr_cleanup_resources - Free PCI resources
* @mrioc: Adapter instance reference

634
drivers/scsi/mpi3mr/mpi3mr_os.c
View file

@ -26,6 +26,462 @@ module_param(logging_level, int, 0);
MODULE_PARM_DESC(logging_level,
" bits for enabling additional logging info (default=0)");
/* Forward declarations*/
/**
* mpi3mr_host_tag_for_scmd - Get host tag for a scmd
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
*
* Calculate the host tag based on block tag for a given scmd.
*
* Return: Valid host tag or MPI3MR_HOSTTAG_INVALID.
*/
static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd)
{
struct scmd_priv *priv = NULL;
u32 unique_tag;
u16 host_tag, hw_queue;
unique_tag = blk_mq_unique_tag(scmd->request);
hw_queue = blk_mq_unique_tag_to_hwq(unique_tag);
if (hw_queue >= mrioc->num_op_reply_q)
return MPI3MR_HOSTTAG_INVALID;
host_tag = blk_mq_unique_tag_to_tag(unique_tag);
if (WARN_ON(host_tag >= mrioc->max_host_ios))
return MPI3MR_HOSTTAG_INVALID;
priv = scsi_cmd_priv(scmd);
/*host_tag 0 is invalid hence incrementing by 1*/
priv->host_tag = host_tag + 1;
priv->scmd = scmd;
priv->in_lld_scope = 1;
priv->req_q_idx = hw_queue;
priv->chain_idx = -1;
return priv->host_tag;
}
/**
* mpi3mr_scmd_from_host_tag - Get SCSI command from host tag
* @mrioc: Adapter instance reference
* @host_tag: Host tag
* @qidx: Operational queue index
*
* Identify the block tag from the host tag and queue index and
* retrieve associated scsi command using scsi_host_find_tag().
*
* Return: SCSI command reference or NULL.
*/
static struct scsi_cmnd *mpi3mr_scmd_from_host_tag(
struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx)
{
struct scsi_cmnd *scmd = NULL;
struct scmd_priv *priv = NULL;
u32 unique_tag = host_tag - 1;
if (WARN_ON(host_tag > mrioc->max_host_ios))
goto out;
unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS);
scmd = scsi_host_find_tag(mrioc->shost, unique_tag);
if (scmd) {
priv = scsi_cmd_priv(scmd);
if (!priv->in_lld_scope)
scmd = NULL;
}
out:
return scmd;
}
/**
* mpi3mr_clear_scmd_priv - Cleanup SCSI command private date
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
*
* Invalidate the SCSI command private data to mark the command
* is not in LLD scope anymore.
*
* Return: Nothing.
*/
static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd)
{
struct scmd_priv *priv = NULL;
priv = scsi_cmd_priv(scmd);
if (WARN_ON(priv->in_lld_scope == 0))
return;
priv->host_tag = MPI3MR_HOSTTAG_INVALID;
priv->req_q_idx = 0xFFFF;
priv->scmd = NULL;
priv->in_lld_scope = 0;
if (priv->chain_idx >= 0) {
clear_bit(priv->chain_idx, mrioc->chain_bitmap);
priv->chain_idx = -1;
}
}
/**
* mpi3mr_process_op_reply_desc - reply descriptor handler
* @mrioc: Adapter instance reference
* @reply_desc: Operational reply descriptor
* @reply_dma: place holder for reply DMA address
* @qidx: Operational queue index
*
* Process the operational reply descriptor and identifies the
* descriptor type. Based on the descriptor map the MPI3 request
* status to a SCSI command status and calls scsi_done call
* back.
*
* Return: Nothing
*/
void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx)
{
u16 reply_desc_type, host_tag = 0;
u16 ioc_status = MPI3_IOCSTATUS_SUCCESS;
u32 ioc_loginfo = 0;
struct mpi3_status_reply_descriptor *status_desc = NULL;
struct mpi3_address_reply_descriptor *addr_desc = NULL;
struct mpi3_success_reply_descriptor *success_desc = NULL;
struct mpi3_scsi_io_reply *scsi_reply = NULL;
struct scsi_cmnd *scmd = NULL;
struct scmd_priv *priv = NULL;
u8 *sense_buf = NULL;
u8 scsi_state = 0, scsi_status = 0, sense_state = 0;
u32 xfer_count = 0, sense_count = 0, resp_data = 0;
u16 dev_handle = 0xFFFF;
struct scsi_sense_hdr sshdr;
*reply_dma = 0;
reply_desc_type = le16_to_cpu(reply_desc->reply_flags) &
MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK;
switch (reply_desc_type) {
case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS:
status_desc = (struct mpi3_status_reply_descriptor *)reply_desc;
host_tag = le16_to_cpu(status_desc->host_tag);
ioc_status = le16_to_cpu(status_desc->ioc_status);
if (ioc_status &
MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info);
ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
break;
case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY:
addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc;
*reply_dma = le64_to_cpu(addr_desc->reply_frame_address);
scsi_reply = mpi3mr_get_reply_virt_addr(mrioc,
*reply_dma);
if (!scsi_reply) {
panic("%s: scsi_reply is NULL, this shouldn't happen\n",
mrioc->name);
goto out;
}
host_tag = le16_to_cpu(scsi_reply->host_tag);
ioc_status = le16_to_cpu(scsi_reply->ioc_status);
scsi_status = scsi_reply->scsi_status;
scsi_state = scsi_reply->scsi_state;
dev_handle = le16_to_cpu(scsi_reply->dev_handle);
sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK);
xfer_count = le32_to_cpu(scsi_reply->transfer_count);
sense_count = le32_to_cpu(scsi_reply->sense_count);
resp_data = le32_to_cpu(scsi_reply->response_data);
sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc,
le64_to_cpu(scsi_reply->sense_data_buffer_address));
if (ioc_status &
MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info);
ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)
panic("%s: Ran out of sense buffers\n", mrioc->name);
break;
case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS:
success_desc = (struct mpi3_success_reply_descriptor *)reply_desc;
host_tag = le16_to_cpu(success_desc->host_tag);
break;
default:
break;
}
scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx);
if (!scmd) {
panic("%s: Cannot Identify scmd for host_tag 0x%x\n",
mrioc->name, host_tag);
goto out;
}
priv = scsi_cmd_priv(scmd);
if (success_desc) {
scmd->result = DID_OK << 16;
goto out_success;
}
if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN &&
xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY ||
scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT ||
scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL))
ioc_status = MPI3_IOCSTATUS_SUCCESS;
if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count &&
sense_buf) {
u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count);
memcpy(scmd->sense_buffer, sense_buf, sz);
}
switch (ioc_status) {
case MPI3_IOCSTATUS_BUSY:
case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES:
scmd->result = SAM_STAT_BUSY;
break;
case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
scmd->result = DID_NO_CONNECT << 16;
break;
case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
scmd->result = DID_SOFT_ERROR << 16;
break;
case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED:
case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED:
scmd->result = DID_RESET << 16;
break;
case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
if ((xfer_count == 0) || (scmd->underflow > xfer_count))
scmd->result = DID_SOFT_ERROR << 16;
else
scmd->result = (DID_OK << 16) | scsi_status;
break;
case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN:
scmd->result = (DID_OK << 16) | scsi_status;
if (sense_state == MPI3_SCSI_STATE_SENSE_VALID)
break;
if (xfer_count < scmd->underflow) {
if (scsi_status == SAM_STAT_BUSY)
scmd->result = SAM_STAT_BUSY;
else
scmd->result = DID_SOFT_ERROR << 16;
} else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
(sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE))
scmd->result = DID_SOFT_ERROR << 16;
else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
scmd->result = DID_RESET << 16;
break;
case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN:
scsi_set_resid(scmd, 0);
fallthrough;
case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR:
case MPI3_IOCSTATUS_SUCCESS:
scmd->result = (DID_OK << 16) | scsi_status;
if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
(sense_state == MPI3_SCSI_STATE_SENSE_FAILED) ||
(sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY))
scmd->result = DID_SOFT_ERROR << 16;
else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
scmd->result = DID_RESET << 16;
break;
case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR:
case MPI3_IOCSTATUS_INVALID_FUNCTION:
case MPI3_IOCSTATUS_INVALID_SGL:
case MPI3_IOCSTATUS_INTERNAL_ERROR:
case MPI3_IOCSTATUS_INVALID_FIELD:
case MPI3_IOCSTATUS_INVALID_STATE:
case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR:
case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
case MPI3_IOCSTATUS_INSUFFICIENT_POWER:
default:
scmd->result = DID_SOFT_ERROR << 16;
break;
}
if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) &&
(scmd->cmnd[0] != ATA_16)) {
ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__,
scmd->result);
scsi_print_command(scmd);
ioc_info(mrioc,
"%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n",
__func__, dev_handle, ioc_status, ioc_loginfo,
priv->req_q_idx + 1);
ioc_info(mrioc,
" host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n",
host_tag, scsi_state, scsi_status, xfer_count, resp_data);
if (sense_buf) {
scsi_normalize_sense(sense_buf, sense_count, &sshdr);
ioc_info(mrioc,
"%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n",
__func__, sense_count, sshdr.sense_key,
sshdr.asc, sshdr.ascq);
}
}
out_success:
mpi3mr_clear_scmd_priv(mrioc, scmd);
scsi_dma_unmap(scmd);
scmd->scsi_done(scmd);
out:
if (sense_buf)
mpi3mr_repost_sense_buf(mrioc,
le64_to_cpu(scsi_reply->sense_data_buffer_address));
}
/**
* mpi3mr_get_chain_idx - get free chain buffer index
* @mrioc: Adapter instance reference
*
* Try to get a free chain buffer index from the free pool.
*
* Return: -1 on failure or the free chain buffer index
*/
static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc)
{
u8 retry_count = 5;
int cmd_idx = -1;
do {
spin_lock(&mrioc->chain_buf_lock);
cmd_idx = find_first_zero_bit(mrioc->chain_bitmap,
mrioc->chain_buf_count);
if (cmd_idx < mrioc->chain_buf_count) {
set_bit(cmd_idx, mrioc->chain_bitmap);
spin_unlock(&mrioc->chain_buf_lock);
break;
}
spin_unlock(&mrioc->chain_buf_lock);
cmd_idx = -1;
} while (retry_count--);
return cmd_idx;
}
/**
* mpi3mr_prepare_sg_scmd - build scatter gather list
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
* @scsiio_req: MPI3 SCSI IO request
*
* This function maps SCSI command's data and protection SGEs to
* MPI request SGEs. If required additional 4K chain buffer is
* used to send the SGEs.
*
* Return: 0 on success, -ENOMEM on dma_map_sg failure
*/
static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
{
dma_addr_t chain_dma;
struct scatterlist *sg_scmd;
void *sg_local, *chain;
u32 chain_length;
int sges_left, chain_idx;
u32 sges_in_segment;
u8 simple_sgl_flags;
u8 simple_sgl_flags_last;
u8 last_chain_sgl_flags;
struct chain_element *chain_req;
struct scmd_priv *priv = NULL;
priv = scsi_cmd_priv(scmd);
simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE |
MPI3_SGE_FLAGS_DLAS_SYSTEM;
simple_sgl_flags_last = simple_sgl_flags |
MPI3_SGE_FLAGS_END_OF_LIST;
last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN |
MPI3_SGE_FLAGS_DLAS_SYSTEM;
sg_local = &scsiio_req->sgl;
if (!scsiio_req->data_length) {
mpi3mr_build_zero_len_sge(sg_local);
return 0;
}
sg_scmd = scsi_sglist(scmd);
sges_left = scsi_dma_map(scmd);
if (sges_left < 0) {
sdev_printk(KERN_ERR, scmd->device,
"scsi_dma_map failed: request for %d bytes!\n",
scsi_bufflen(scmd));
return -ENOMEM;
}
if (sges_left > MPI3MR_SG_DEPTH) {
sdev_printk(KERN_ERR, scmd->device,
"scsi_dma_map returned unsupported sge count %d!\n",
sges_left);
return -ENOMEM;
}
sges_in_segment = (mrioc->facts.op_req_sz -
offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common);
if (sges_left <= sges_in_segment)
goto fill_in_last_segment;
/* fill in main message segment when there is a chain following */
while (sges_in_segment > 1) {
mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += sizeof(struct mpi3_sge_common);
sges_left--;
sges_in_segment--;
}
chain_idx = mpi3mr_get_chain_idx(mrioc);
if (chain_idx < 0)
return -1;
chain_req = &mrioc->chain_sgl_list[chain_idx];
priv->chain_idx = chain_idx;
chain = chain_req->addr;
chain_dma = chain_req->dma_addr;
sges_in_segment = sges_left;
chain_length = sges_in_segment * sizeof(struct mpi3_sge_common);
mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags,
chain_length, chain_dma);
sg_local = chain;
fill_in_last_segment:
while (sges_left > 0) {
if (sges_left == 1)
mpi3mr_add_sg_single(sg_local,
simple_sgl_flags_last, sg_dma_len(sg_scmd),
sg_dma_address(sg_scmd));
else
mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
sg_scmd = sg_next(sg_scmd);
sg_local += sizeof(struct mpi3_sge_common);
sges_left--;
}
return 0;
}
/**
* mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO
* @mrioc: Adapter instance reference
* @scmd: SCSI command reference
* @scsiio_req: MPI3 SCSI IO request
*
* This function calls mpi3mr_prepare_sg_scmd for constructing
* both data SGEs and protection information SGEs in the MPI
* format from the SCSI Command as appropriate .
*
* Return: return value of mpi3mr_prepare_sg_scmd.
*/
static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc,
struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
{
int ret;
ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
if (ret)
return ret;
return ret;
}
/**
* mpi3mr_map_queues - Map queues callback handler
* @shost: SCSI host reference
@ -43,6 +499,71 @@ static int mpi3mr_map_queues(struct Scsi_Host *shost)
mrioc->pdev, mrioc->op_reply_q_offset);
}
/**
* mpi3mr_scan_start - Scan start callback handler
* @shost: SCSI host reference
*
* Issue port enable request asynchronously.
*
* Return: Nothing
*/
static void mpi3mr_scan_start(struct Scsi_Host *shost)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
mrioc->scan_started = 1;
ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__);
if (mpi3mr_issue_port_enable(mrioc, 1)) {
ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__);
mrioc->scan_started = 0;
mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
}
}
/**
* mpi3mr_scan_finished - Scan finished callback handler
* @shost: SCSI host reference
* @time: Jiffies from the scan start
*
* Checks whether the port enable is completed or timedout or
* failed and set the scan status accordingly after taking any
* recovery if required.
*
* Return: 1 on scan finished or timed out, 0 for in progress
*/
static int mpi3mr_scan_finished(struct Scsi_Host *shost,
unsigned long time)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT;
if (time >= (pe_timeout * HZ)) {
mrioc->init_cmds.is_waiting = 0;
mrioc->init_cmds.callback = NULL;
mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
ioc_err(mrioc, "%s :port enable request timed out\n", __func__);
mrioc->is_driver_loading = 0;
mpi3mr_soft_reset_handler(mrioc,
MPI3MR_RESET_FROM_PE_TIMEOUT, 1);
}
if (mrioc->scan_failed) {
ioc_err(mrioc,
"%s :port enable failed with (ioc_status=0x%08x)\n",
__func__, mrioc->scan_failed);
mrioc->is_driver_loading = 0;
mrioc->stop_drv_processing = 1;
return 1;
}
if (mrioc->scan_started)
return 0;
ioc_info(mrioc, "%s :port enable: SUCCESS\n", __func__);
mrioc->is_driver_loading = 0;
return 1;
}
/**
* mpi3mr_slave_destroy - Slave destroy callback handler
* @sdev: SCSI device reference
@ -125,10 +646,114 @@ static int mpi3mr_target_alloc(struct scsi_target *starget)
static int mpi3mr_qcmd(struct Scsi_Host *shost,
struct scsi_cmnd *scmd)
{
struct mpi3mr_ioc *mrioc = shost_priv(shost);
struct mpi3mr_stgt_priv_data *stgt_priv_data;
struct mpi3mr_sdev_priv_data *sdev_priv_data;
struct scmd_priv *scmd_priv_data = NULL;
struct mpi3_scsi_io_request *scsiio_req = NULL;
struct op_req_qinfo *op_req_q = NULL;
int retval = 0;
u16 dev_handle;
u16 host_tag;
u32 scsiio_flags = 0;
struct request *rq = scmd->request;
int iprio_class;
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
sdev_priv_data = scmd->device->hostdata;
if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (mrioc->stop_drv_processing) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (mrioc->reset_in_progress) {
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
stgt_priv_data = sdev_priv_data->tgt_priv_data;
dev_handle = stgt_priv_data->dev_handle;
if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (stgt_priv_data->dev_removed) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
if (atomic_read(&stgt_priv_data->block_io)) {
if (mrioc->stop_drv_processing) {
scmd->result = DID_NO_CONNECT << 16;
scmd->scsi_done(scmd);
goto out;
}
retval = SCSI_MLQUEUE_DEVICE_BUSY;
goto out;
}
host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd);
if (host_tag == MPI3MR_HOSTTAG_INVALID) {
scmd->result = DID_ERROR << 16;
scmd->scsi_done(scmd);
goto out;
}
if (scmd->sc_data_direction == DMA_FROM_DEVICE)
scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ;
else if (scmd->sc_data_direction == DMA_TO_DEVICE)
scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE;
else
scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER;
scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ;
if (sdev_priv_data->ncq_prio_enable) {
iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
if (iprio_class == IOPRIO_CLASS_RT)
scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT;
}
if (scmd->cmd_len > 16)
scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16;
scmd_priv_data = scsi_cmd_priv(scmd);
memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req;
scsiio_req->function = MPI3_FUNCTION_SCSI_IO;
scsiio_req->host_tag = cpu_to_le16(host_tag);
memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len);
scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd));
scsiio_req->dev_handle = cpu_to_le16(dev_handle);
scsiio_req->flags = cpu_to_le32(scsiio_flags);
int_to_scsilun(sdev_priv_data->lun_id,
(struct scsi_lun *)scsiio_req->lun);
if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) {
mpi3mr_clear_scmd_priv(mrioc, scmd);
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx];
if (mpi3mr_op_request_post(mrioc, op_req_q,
scmd_priv_data->mpi3mr_scsiio_req)) {
mpi3mr_clear_scmd_priv(mrioc, scmd);
retval = SCSI_MLQUEUE_HOST_BUSY;
goto out;
}
out:
return retval;
}
@ -142,6 +767,8 @@ static struct scsi_host_template mpi3mr_driver_template = {
.slave_configure = mpi3mr_slave_configure,
.target_destroy = mpi3mr_target_destroy,
.slave_destroy = mpi3mr_slave_destroy,
.scan_finished = mpi3mr_scan_finished,
.scan_start = mpi3mr_scan_start,
.map_queues = mpi3mr_map_queues,
.no_write_same = 1,
.can_queue = 1,
@ -216,6 +843,7 @@ mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
spin_lock_init(&mrioc->admin_req_lock);
spin_lock_init(&mrioc->reply_free_queue_lock);
spin_lock_init(&mrioc->sbq_lock);
spin_lock_init(&mrioc->chain_buf_lock);
mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS);
if (pdev->revision)
@ -285,6 +913,7 @@ static void mpi3mr_remove(struct pci_dev *pdev)
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
mrioc->stop_drv_processing = 1;
scsi_remove_host(shost);
mpi3mr_cleanup_ioc(mrioc);
@ -317,6 +946,7 @@ static void mpi3mr_shutdown(struct pci_dev *pdev)
while (mrioc->reset_in_progress || mrioc->is_driver_loading)
ssleep(1);
mrioc->stop_drv_processing = 1;
mpi3mr_cleanup_ioc(mrioc);
}