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hpsa: add support sending aborts to physical devices via the ioaccel2 path

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add support for tmf when in ioaccel2 mode

Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@Suse.de>
Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Stephen Cameron 2015-04-23 09:34:06 -05:00 committed by James Bottomley
parent ddcf834fe0
commit 8be986cc57
3 changed files with 135 additions and 8 deletions
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134
drivers/scsi/hpsa.c
View File

@ -861,6 +861,28 @@ static void set_ioaccel1_performant_mode(struct ctlr_info *h,
IOACCEL1_BUSADDR_CMDTYPE;
}
static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
struct CommandList *c,
int reply_queue)
{
struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
&h->ioaccel2_cmd_pool[c->cmdindex];
/* Tell the controller to post the reply to the queue for this
* processor. This seems to give the best I/O throughput.
*/
if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
cp->reply_queue = smp_processor_id() % h->nreply_queues;
else
cp->reply_queue = reply_queue % h->nreply_queues;
/* Set the bits in the address sent down to include:
* - performant mode bit not used in ioaccel mode 2
* - pull count (bits 0-3)
* - command type isn't needed for ioaccel2
*/
c->busaddr |= h->ioaccel2_blockFetchTable[0];
}
static void set_ioaccel2_performant_mode(struct ctlr_info *h,
struct CommandList *c,
int reply_queue)
@ -927,6 +949,10 @@ static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
set_ioaccel2_performant_mode(h, c, reply_queue);
writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
break;
case IOACCEL2_TMF:
set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
break;
default:
set_performant_mode(h, c, reply_queue);
h->access.submit_command(h, c);
@ -4909,6 +4935,47 @@ static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
return rc;
}
static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
struct CommandList *command_to_abort, int reply_queue)
{
struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
struct io_accel2_cmd *c2a =
&h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
struct scsi_cmnd *scmd =
(struct scsi_cmnd *) command_to_abort->scsi_cmd;
struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
/*
* We're overlaying struct hpsa_tmf_struct on top of something which
* was allocated as a struct io_accel2_cmd, so we better be sure it
* actually fits, and doesn't overrun the error info space.
*/
BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
sizeof(struct io_accel2_cmd));
BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
offsetof(struct hpsa_tmf_struct, error_len) +
sizeof(ac->error_len));
c->cmd_type = IOACCEL2_TMF;
/* Adjust the DMA address to point to the accelerated command buffer */
c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
(c->cmdindex * sizeof(struct io_accel2_cmd));
BUG_ON(c->busaddr & 0x0000007F);
memset(ac, 0, sizeof(*c2)); /* yes this is correct */
ac->iu_type = IOACCEL2_IU_TMF_TYPE;
ac->reply_queue = reply_queue;
ac->tmf = IOACCEL2_TMF_ABORT;
ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
memset(ac->lun_id, 0, sizeof(ac->lun_id));
ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
ac->error_ptr = cpu_to_le64(c->busaddr +
offsetof(struct io_accel2_cmd, error_data));
ac->error_len = cpu_to_le32(sizeof(c2->error_data));
}
/* ioaccel2 path firmware cannot handle abort task requests.
* Change abort requests to physical target reset, and send to the
* address of the physical disk used for the ioaccel 2 command.
@ -4987,17 +5054,72 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
return rc; /* success */
}
static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
struct CommandList *abort, int reply_queue)
{
int rc = IO_OK;
struct CommandList *c;
__le32 taglower, tagupper;
struct hpsa_scsi_dev_t *dev;
struct io_accel2_cmd *c2;
dev = abort->scsi_cmd->device->hostdata;
if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
return -1;
c = cmd_alloc(h);
setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
(void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
hpsa_get_tag(h, abort, &taglower, &tagupper);
dev_dbg(&h->pdev->dev,
"%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
__func__, tagupper, taglower);
/* no unmap needed here because no data xfer. */
dev_dbg(&h->pdev->dev,
"%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
__func__, tagupper, taglower, c2->error_data.serv_response);
switch (c2->error_data.serv_response) {
case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
rc = 0;
break;
case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
case IOACCEL2_SERV_RESPONSE_FAILURE:
case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
rc = -1;
break;
default:
dev_warn(&h->pdev->dev,
"%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
__func__, tagupper, taglower,
c2->error_data.serv_response);
rc = -1;
}
cmd_free(h, c);
dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
tagupper, taglower);
return rc;
}
static int hpsa_send_abort_both_ways(struct ctlr_info *h,
unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
{
/* ioccelerator mode 2 commands should be aborted via the
/*
* ioccelerator mode 2 commands should be aborted via the
* accelerated path, since RAID path is unaware of these commands,
* but underlying firmware can't handle abort TMF.
* Change abort to physical device reset.
* but not all underlying firmware can handle abort TMF.
* Change abort to physical device reset when abort TMF is unsupported.
*/
if (abort->cmd_type == CMD_IOACCEL2)
if (abort->cmd_type == CMD_IOACCEL2) {
if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)
return hpsa_send_abort_ioaccel2(h, abort,
reply_queue);
else
return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr,
abort, reply_queue);
}
return hpsa_send_abort(h, scsi3addr, abort, reply_queue);
}
@ -5887,7 +6009,7 @@ static inline void finish_cmd(struct CommandList *c)
if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
|| c->cmd_type == CMD_IOACCEL2))
complete_scsi_command(c);
else if (c->cmd_type == CMD_IOCTL_PEND)
else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
complete(c->waiting);
}
@ -6668,6 +6790,8 @@ static void hpsa_find_board_params(struct ctlr_info *h)
dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
}
static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)

1
drivers/scsi/hpsa.h
View File

@ -231,6 +231,7 @@ struct ctlr_info {
#define HPSATMF_PHYS_QRY_TASK (1 << 7)
#define HPSATMF_PHYS_QRY_TSET (1 << 8)
#define HPSATMF_PHYS_QRY_ASYNC (1 << 9)
#define HPSATMF_IOACCEL_ENABLED (1 << 15)
#define HPSATMF_MASK_SUPPORTED (1 << 16)
#define HPSATMF_LOG_LUN_RESET (1 << 17)
#define HPSATMF_LOG_NEX_RESET (1 << 18)

6
drivers/scsi/hpsa_cmd.h
View File

@ -396,6 +396,7 @@ struct ErrorInfo {
#define CMD_SCSI 0x03
#define CMD_IOACCEL1 0x04
#define CMD_IOACCEL2 0x05
#define IOACCEL2_TMF 0x06
#define DIRECT_LOOKUP_SHIFT 4
#define DIRECT_LOOKUP_MASK (~((1 << DIRECT_LOOKUP_SHIFT) - 1))
@ -590,6 +591,7 @@ struct io_accel2_cmd {
#define IOACCEL2_DIR_NO_DATA 0x00
#define IOACCEL2_DIR_DATA_IN 0x01
#define IOACCEL2_DIR_DATA_OUT 0x02
#define IOACCEL2_TMF_ABORT 0x01
/*
* SCSI Task Management Request format for Accelerator Mode 2
*/
@ -598,13 +600,13 @@ struct hpsa_tmf_struct {
u8 reply_queue; /* Reply Queue ID */
u8 tmf; /* Task Management Function */
u8 reserved1; /* byte 3 Reserved */
u32 it_nexus; /* SCSI I-T Nexus */
__le32 it_nexus; /* SCSI I-T Nexus */
u8 lun_id[8]; /* LUN ID for TMF request */
__le64 tag; /* cciss tag associated w/ request */
__le64 abort_tag; /* cciss tag of SCSI cmd or TMF to abort */
__le64 error_ptr; /* Error Pointer */
__le32 error_len; /* Error Length */
};
} __aligned(IOACCEL2_COMMANDLIST_ALIGNMENT);
/* Configuration Table Structure */
struct HostWrite {