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| author |   Ching Huang <ching2048@areca.com.tw> | 2017-12-05 09:55:02 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2017-12-06 19:32:41 -0500 |
| commit | abf33d83b28079279b8b5dd77c9ff74111278fb0 (patch) | |
| tree | 9b797eeb22ae904aac3e1f2ac57f9830deeee046 /drivers/scsi/arcmsr | |
| parent | scsi: arcmsr: Replace constant ARCMSR_MAX_OUTSTANDING_CMD (diff) | |
| download | linux-dev-abf33d83b28079279b8b5dd77c9ff74111278fb0.tar.xz linux-dev-abf33d83b28079279b8b5dd77c9ff74111278fb0.zip | |
scsi: arcmsr: Add driver option cmd_per_lun
Add driver option cmd_per_lun to set host->cmd_per_lun value by user.
Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/arcmsr')
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr.h | 4 | ||||
| -rw-r--r-- | drivers/scsi/arcmsr/arcmsr_hba.c | 10 |
2 files changed, 11 insertions, 3 deletions
diff --git a/drivers/scsi/arcmsr/arcmsr.h b/drivers/scsi/arcmsr/arcmsr.h index 631064e057ac..5b0b645afa41 100644 --- a/drivers/scsi/arcmsr/arcmsr.h +++ b/drivers/scsi/arcmsr/arcmsr.h @@ -56,7 +56,9 @@ struct device_attribute; #define ARCMSR_MAX_XFER_SECTORS_C 304 #define ARCMSR_MAX_TARGETID 17 #define ARCMSR_MAX_TARGETLUN 8 -#define ARCMSR_MAX_CMD_PERLUN ARCMSR_MAX_OUTSTANDING_CMD +#define ARCMSR_MAX_CMD_PERLUN 128 +#define ARCMSR_DEFAULT_CMD_PERLUN 32 +#define ARCMSR_MIN_CMD_PERLUN 1 #define ARCMSR_MAX_QBUFFER 4096 #define ARCMSR_DEFAULT_SG_ENTRIES 38 #define ARCMSR_MAX_HBB_POSTQUEUE 264 diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c index b044210c3d61..82fa2990a224 100644 --- a/drivers/scsi/arcmsr/arcmsr_hba.c +++ b/drivers/scsi/arcmsr/arcmsr_hba.c @@ -79,6 +79,10 @@ static int host_can_queue = ARCMSR_DEFAULT_OUTSTANDING_CMD; module_param(host_can_queue, int, S_IRUGO); MODULE_PARM_DESC(host_can_queue, " adapter queue depth(32 ~ 1024), default is 128"); +static int cmd_per_lun = ARCMSR_DEFAULT_CMD_PERLUN; +module_param(cmd_per_lun, int, S_IRUGO); +MODULE_PARM_DESC(cmd_per_lun, " device queue depth(1 ~ 128), default is 32"); + #define ARCMSR_SLEEPTIME 10 #define ARCMSR_RETRYCOUNT 12 @@ -141,7 +145,7 @@ static struct scsi_host_template arcmsr_scsi_host_template = { .this_id = ARCMSR_SCSI_INITIATOR_ID, .sg_tablesize = ARCMSR_DEFAULT_SG_ENTRIES, .max_sectors = ARCMSR_MAX_XFER_SECTORS_C, - .cmd_per_lun = ARCMSR_MAX_CMD_PERLUN, + .cmd_per_lun = ARCMSR_DEFAULT_CMD_PERLUN, .use_clustering = ENABLE_CLUSTERING, .shost_attrs = arcmsr_host_attrs, .no_write_same = 1, @@ -884,7 +888,9 @@ static int arcmsr_probe(struct pci_dev *pdev, const struct pci_device_id *id) if ((host_can_queue < ARCMSR_MIN_OUTSTANDING_CMD) || (host_can_queue > ARCMSR_MAX_OUTSTANDING_CMD)) host_can_queue = ARCMSR_DEFAULT_OUTSTANDING_CMD; host->can_queue = host_can_queue; /* max simultaneous cmds */ - host->cmd_per_lun = ARCMSR_MAX_CMD_PERLUN; + if ((cmd_per_lun < ARCMSR_MIN_CMD_PERLUN) || (cmd_per_lun > ARCMSR_MAX_CMD_PERLUN)) + cmd_per_lun = ARCMSR_DEFAULT_CMD_PERLUN; + host->cmd_per_lun = cmd_per_lun; host->this_id = ARCMSR_SCSI_INITIATOR_ID; host->unique_id = (bus << 8) | dev_fun; pci_set_drvdata(pdev, host); |