scsi: aacraid: Retrieve Queue Depth from Adapter FW
Retrieved queue depth from fw and saved it for future use.
Only applicable for HBA1000 drives.
Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index b854c49..20908a1 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1516,6 +1516,77 @@ static int aac_scsi_32_64(struct fib * fib, struct scsi_cmnd * cmd)
return aac_scsi_32(fib, cmd);
}
+int aac_issue_bmic_identify(struct aac_dev *dev, u32 bus, u32 target)
+{
+ struct fib *fibptr;
+ struct aac_srb *srbcmd;
+ struct sgmap64 *sg64;
+ struct aac_ciss_identify_pd *identify_resp;
+ dma_addr_t addr;
+ u32 vbus, vid;
+ u16 fibsize, datasize;
+ int rcode = -ENOMEM;
+
+ fibptr = aac_fib_alloc(dev);
+ if (!fibptr)
+ goto out;
+
+ fibsize = sizeof(struct aac_srb) -
+ sizeof(struct sgentry) + sizeof(struct sgentry64);
+ datasize = sizeof(struct aac_ciss_identify_pd);
+
+ identify_resp = pci_alloc_consistent(dev->pdev, datasize, &addr);
+
+ if (!identify_resp)
+ goto fib_free_ptr;
+
+ vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.VirtDeviceBus);
+ vid = (u32)le16_to_cpu(dev->supplement_adapter_info.VirtDeviceTarget);
+
+ aac_fib_init(fibptr);
+
+ srbcmd = (struct aac_srb *) fib_data(fibptr);
+ srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);
+ srbcmd->channel = cpu_to_le32(vbus);
+ srbcmd->id = cpu_to_le32(vid);
+ srbcmd->lun = 0;
+ srbcmd->flags = cpu_to_le32(SRB_DataIn);
+ srbcmd->timeout = cpu_to_le32(10);
+ srbcmd->retry_limit = 0;
+ srbcmd->cdb_size = cpu_to_le32(12);
+ srbcmd->count = cpu_to_le32(datasize);
+
+ memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
+ srbcmd->cdb[0] = 0x26;
+ srbcmd->cdb[2] = (u8)((AAC_MAX_LUN + target) & 0x00FF);
+ srbcmd->cdb[6] = CISS_IDENTIFY_PHYSICAL_DEVICE;
+
+ sg64 = (struct sgmap64 *)&srbcmd->sg;
+ sg64->count = cpu_to_le32(1);
+ sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16));
+ sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
+ sg64->sg[0].count = cpu_to_le32(datasize);
+
+ rcode = aac_fib_send(ScsiPortCommand64,
+ fibptr, fibsize, FsaNormal, 1, 1, NULL, NULL);
+
+ if (identify_resp->current_queue_depth_limit <= 0 ||
+ identify_resp->current_queue_depth_limit > 32)
+ dev->hba_map[bus][target].qd_limit = 32;
+ else
+ dev->hba_map[bus][target].qd_limit =
+ identify_resp->current_queue_depth_limit;
+
+ pci_free_consistent(dev->pdev, datasize, (void *)identify_resp, addr);
+
+ aac_fib_complete(fibptr);
+
+fib_free_ptr:
+ aac_fib_free(fibptr);
+out:
+ return rcode;
+}
+
/**
* aac_update hba_map()- update current hba map with data from FW
* @dev: aac_dev structure
@@ -1565,6 +1636,9 @@ void aac_update_hba_map(struct aac_dev *dev,
if (devtype != AAC_DEVTYPE_NATIVE_RAW)
goto update_devtype;
+ if (aac_issue_bmic_identify(dev, bus, target) < 0)
+ dev->hba_map[bus][target].qd_limit = 32;
+
update_devtype:
dev->hba_map[bus][target].devtype = devtype;
}
@@ -1711,8 +1785,10 @@ int aac_get_adapter_info(struct aac_dev* dev)
/* reset all previous mapped devices (i.e. for init. after IOP_RESET) */
for (bus = 0; bus < AAC_MAX_BUSES; bus++) {
- for (target = 0; target < AAC_MAX_TARGETS; target++)
+ for (target = 0; target < AAC_MAX_TARGETS; target++) {
dev->hba_map[bus][target].devtype = 0;
+ dev->hba_map[bus][target].qd_limit = 0;
+ }
}
/*
