diff options
| author | Sumant Patro <sumant.patro@lsi.com> | 2007-05-17 05:47:51 -0700 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-05-24 09:08:27 -0500 |
| commit | 05e9ebbefb379a4da782b21b8427c88ac28a2334 (patch) | |
| tree | effaeaafd39a849d6a4a303bde6f60714c1a72c9 /drivers/scsi/megaraid/megaraid_sas.h | |
| parent | 3d9780b97667fcd63159c0933fdce75465da6c70 (diff) | |
[SCSI] megaraid_sas: intercept cmd timeout and throttle io
eh_timed_out call back (megasas_reset_timer) is used to throttle io
to the adapter when it is called the first time for a scmd.
The MEGASAS_FW_BUSY flag is set and can_queue reduced to 16.
The can_queue is restored from completion routine in following
two conditions : 5 seconds has elapsed and
the # of outstanding cmds in FW is < 17.
Signed-off-by: Sumant Patro <sumant.patro@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index e862992ee377..4dffc918a414 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -18,9 +18,9 @@ /* * MegaRAID SAS Driver meta data */ -#define MEGASAS_VERSION "00.00.03.10-rc1" -#define MEGASAS_RELDATE "Feb 14, 2007" -#define MEGASAS_EXT_VERSION "Wed Feb 14 10:14:25 PST 2007" +#define MEGASAS_VERSION "00.00.03.10-rc5" +#define MEGASAS_RELDATE "May 17, 2007" +#define MEGASAS_EXT_VERSION "Thu May 17 10:09:32 PDT 2007" /* * Device IDs @@ -539,6 +539,8 @@ struct megasas_ctrl_info { #define MEGASAS_DBG_LVL 1 +#define MEGASAS_FW_BUSY 1 + /* * When SCSI mid-layer calls driver's reset routine, driver waits for * MEGASAS_RESET_WAIT_TIME seconds for all outstanding IO to complete. Note @@ -549,8 +551,8 @@ struct megasas_ctrl_info { #define MEGASAS_RESET_WAIT_TIME 180 #define MEGASAS_INTERNAL_CMD_WAIT_TIME 180 #define MEGASAS_RESET_NOTICE_INTERVAL 5 - #define MEGASAS_IOCTL_CMD 0 +#define MEGASAS_DEFAULT_CMD_TIMEOUT 90 /* * FW reports the maximum of number of commands that it can accept (maximum @@ -1073,7 +1075,6 @@ struct megasas_instance { struct megasas_register_set __iomem *reg_set; s8 init_id; - u8 reserved[3]; u16 max_num_sge; u16 max_fw_cmds; @@ -1104,6 +1105,9 @@ struct megasas_instance { struct megasas_instance_template *instancet; struct tasklet_struct isr_tasklet; + + u8 flag; + unsigned long last_time; }; #define MEGASAS_IS_LOGICAL(scp) \ |