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[SCSI] mpt2sas: Added SCSIIO, Internal and high priority memory pools to support multiple TM

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1) create a pool of high priority message frames in the region of memory
between message frames and chains.  The modifications are in
_base_allocate_memory_pools.  Also create a seperate pool of memory for
internal commands located near the same region of memory.  The pool of high
priority message frames is restriced by the facts->HighPriorityCredit.

2) Create additional API for accessing request message frames. New function
mpt2sas_base_get_smid_hpr is for highpriority request. New function
mpt2sas_base_get_smid_scsiio for SCSI_IO, passing in the scsi command
pointer.  The mpt2sas_base_get_smid function is for requesting internal
commands.

3) Added new function _base_get_cb_idx to obtain the callback
index from one of the three pools of request message frames.

4) Removed wrapper functions _scsih_scsi_lookup_set and
_scsih_scsi_lookup_getclear. These were removed because this handling was
moved into mpt2sas_base_get_smid_scsiio and mpt2sas_base_free_smid.

5) The function mpt2sas_base_free_smid is modified so the request message
frames are put back on one of the three pools of request message frames.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Kashyap, Desai
2009-09-14 11:02:48 +05:30
committed by James Bottomley
parent 19d3ebe3d5
commit 595bb0bd62
4 changed files with 307 additions and 137 deletions
Download Patch File Download Diff File Expand all files Collapse all files

89
drivers/scsi/mpt2sas/mpt2sas_scsih.c
View File

@@ -762,66 +762,16 @@ _scsih_is_end_device(u32 device_info)
}
/**
* _scsih_scsi_lookup_get - returns scmd entry
* mptscsih_get_scsi_lookup - returns scmd entry
* @ioc: per adapter object
* @smid: system request message index
* Context: This function will acquire ioc->scsi_lookup_lock.
*
* Returns the smid stored scmd pointer.
*/
static struct scsi_cmnd *
_scsih_scsi_lookup_get(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
unsigned long flags;
struct scsi_cmnd *scmd;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
scmd = ioc->scsi_lookup[smid - 1].scmd;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return scmd;
}
/**
* mptscsih_getclear_scsi_lookup - returns scmd entry
* @ioc: per adapter object
* @smid: system request message index
* Context: This function will acquire ioc->scsi_lookup_lock.
*
* Returns the smid stored scmd pointer, as well as clearing the scmd pointer.
*/
static struct scsi_cmnd *
_scsih_scsi_lookup_getclear(struct MPT2SAS_ADAPTER *ioc, u16 smid)
{
unsigned long flags;
struct scsi_cmnd *scmd;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
scmd = ioc->scsi_lookup[smid - 1].scmd;
ioc->scsi_lookup[smid - 1].scmd = NULL;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return scmd;
}
/**
* _scsih_scsi_lookup_set - updates scmd entry in lookup
* @ioc: per adapter object
* @smid: system request message index
* @scmd: pointer to scsi command object
* Context: This function will acquire ioc->scsi_lookup_lock.
*
* This will save scmd pointer in the scsi_lookup array.
*
* Return nothing.
*/
static void
_scsih_scsi_lookup_set(struct MPT2SAS_ADAPTER *ioc, u16 smid,
struct scsi_cmnd *scmd)
{
unsigned long flags;
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
ioc->scsi_lookup[smid - 1].scmd = scmd;
spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
return ioc->scsi_lookup[smid - 1].scmd;
}
/**
@@ -844,9 +794,9 @@ _scsih_scsi_lookup_find_by_scmd(struct MPT2SAS_ADAPTER *ioc, struct scsi_cmnd
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
smid = 0;
for (i = 0; i < ioc->request_depth; i++) {
for (i = 0; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd == scmd) {
smid = i + 1;
smid = ioc->scsi_lookup[i].smid;
goto out;
}
}
@@ -875,7 +825,7 @@ _scsih_scsi_lookup_find_by_target(struct MPT2SAS_ADAPTER *ioc, int id,
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
found = 0;
for (i = 0 ; i < ioc->request_depth; i++) {
for (i = 0 ; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd &&
(ioc->scsi_lookup[i].scmd->device->id == id &&
ioc->scsi_lookup[i].scmd->device->channel == channel)) {
@@ -909,7 +859,7 @@ _scsih_scsi_lookup_find_by_lun(struct MPT2SAS_ADAPTER *ioc, int id,
spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
found = 0;
for (i = 0 ; i < ioc->request_depth; i++) {
for (i = 0 ; i < ioc->scsiio_depth; i++) {
if (ioc->scsi_lookup[i].scmd &&
(ioc->scsi_lookup[i].scmd->device->id == id &&
ioc->scsi_lookup[i].scmd->device->channel == channel &&
@@ -1119,7 +1069,7 @@ _scsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
}
/**
* _scsih_change_queue_depth - changing device queue tag type
* _scsih_change_queue_type - changing device queue tag type
* @sdev: scsi device struct
* @tag_type: requested tag type
*
@@ -1822,7 +1772,7 @@ mpt2sas_scsih_issue_tm(struct MPT2SAS_ADAPTER *ioc, u16 handle, uint lun,
goto issue_host_reset;
}
smid = mpt2sas_base_get_smid(ioc, ioc->tm_cb_idx);
smid = mpt2sas_base_get_smid_hpr(ioc, ioc->tm_cb_idx);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
@@ -1830,7 +1780,8 @@ mpt2sas_scsih_issue_tm(struct MPT2SAS_ADAPTER *ioc, u16 handle, uint lun,
}
dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "sending tm: handle(0x%04x),"
" task_type(0x%02x), smid(%d)\n", ioc->name, handle, type, smid));
" task_type(0x%02x), smid(%d)\n", ioc->name, handle, type,
smid_task));
ioc->tm_cmds.status = MPT2_CMD_PENDING;
mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
ioc->tm_cmds.smid = smid;
@@ -2082,7 +2033,7 @@ _scsih_target_reset(struct scsi_cmnd *scmd)
}
/**
* _scsih_abort - eh threads main host reset routine
* _scsih_host_reset - eh threads main host reset routine
* @sdev: scsi device struct
*
* Returns SUCCESS if command aborted else FAILED
@@ -2440,8 +2391,8 @@ _scsih_flush_running_cmds(struct MPT2SAS_ADAPTER *ioc)
u16 smid;
u16 count = 0;
for (smid = 1; smid <= ioc->request_depth; smid++) {
scmd = _scsih_scsi_lookup_getclear(ioc, smid);
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
scmd = _scsih_scsi_lookup_get(ioc, smid);
if (!scmd)
continue;
count++;
@@ -2623,7 +2574,7 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
if ((sas_device_priv_data->flags & MPT_DEVICE_TLR_ON))
mpi_control |= MPI2_SCSIIO_CONTROL_TLR_ON;
smid = mpt2sas_base_get_smid(ioc, ioc->scsi_io_cb_idx);
smid = mpt2sas_base_get_smid_scsiio(ioc, ioc->scsi_io_cb_idx, scmd);
if (!smid) {
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
@@ -2665,7 +2616,6 @@ _scsih_qcmd(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *))
}
}
_scsih_scsi_lookup_set(ioc, smid, scmd);
mpt2sas_base_put_smid_scsi_io(ioc, smid,
sas_device_priv_data->sas_target->handle);
return 0;
@@ -2984,7 +2934,7 @@ _scsih_io_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply)
u32 response_code;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
scmd = _scsih_scsi_lookup_getclear(ioc, smid);
scmd = _scsih_scsi_lookup_get(ioc, smid);
if (scmd == NULL)
return;
@@ -3406,9 +3356,8 @@ _scsih_expander_add(struct MPT2SAS_ADAPTER *ioc, u16 handle)
}
}
sas_address = le64_to_cpu(expander_pg0.SASAddress);
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_address = le64_to_cpu(expander_pg0.SASAddress);
sas_expander = mpt2sas_scsih_expander_find_by_sas_address(ioc,
sas_address);
spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
@@ -4081,7 +4030,7 @@ _scsih_sas_broadcast_primative_event(struct MPT2SAS_ADAPTER *ioc,
termination_count = 0;
query_count = 0;
mpi_reply = ioc->tm_cmds.reply;
for (smid = 1; smid <= ioc->request_depth; smid++) {
for (smid = 1; smid <= ioc->scsiio_depth; smid++) {
scmd = _scsih_scsi_lookup_get(ioc, smid);
if (!scmd)
continue;
@@ -4145,8 +4094,8 @@ _scsih_sas_discovery_event(struct MPT2SAS_ADAPTER *ioc,
(event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
"start" : "stop");
if (event_data->DiscoveryStatus)
printk(MPT2SAS_DEBUG_FMT ", discovery_status(0x%08x)",
ioc->name, le32_to_cpu(event_data->DiscoveryStatus));
printk("discovery_status(0x%08x)",
le32_to_cpu(event_data->DiscoveryStatus));
printk("\n");
}
#endif