diff options
| -rw-r--r-- | Documentation/scsi/sym53c8xx_2.txt | 21 | ||||
| -rw-r--r-- | drivers/scsi/sym53c8xx_2/sym53c8xx.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/sym53c8xx_2/sym_glue.c | 66 |
3 files changed, 8 insertions, 80 deletions
diff --git a/Documentation/scsi/sym53c8xx_2.txt b/Documentation/scsi/sym53c8xx_2.txt index 3d9f06b..49ea5c5 100644 --- a/Documentation/scsi/sym53c8xx_2.txt +++ b/Documentation/scsi/sym53c8xx_2.txt @@ -449,25 +449,14 @@ options as above. cmd_per_lun=#tags (#tags > 1) tagged command queuing enabled #tags will be truncated to the max queued commands configuration parameter. -10.2.2 Detailed control of tagged commands - This option allows you to specify a command queue depth for each device - that supports tagged command queueing. - Example: - tag_ctrl=10/t2t3q16-t5q24/t1u2q32 - will set devices queue depth as follow: - - controller #0 target #2 and target #3 -> 16 commands, - - controller #0 target #5 -> 24 commands, - - controller #1 target #1 logical unit #2 -> 32 commands, - - all other logical units (all targets, all controllers) -> 10 commands. - -10.2.3 Burst max +10.2.2 Burst max burst=0 burst disabled burst=255 get burst length from initial IO register settings. burst=#x burst enabled (1<<#x burst transfers max) #x is an integer value which is log base 2 of the burst transfers max. By default the driver uses the maximum value supported by the chip. -10.2.4 LED support +10.2.3 LED support led=1 enable LED support led=0 disable LED support Do not enable LED support if your scsi board does not use SDMS BIOS. @@ -560,9 +549,9 @@ Previously, the sym2 driver accepted arguments of the form sym53c8xx=tags:4,sync:10,debug:0x200 As a result of the new module parameters, this is no longer available. -Most of the options have remained the same, but tags has split into -cmd_per_lun and tag_ctrl for its two different purposes. The sample above -would be specified as: +Most of the options have remained the same, but tags has become +cmd_per_lun to reflect its different purposes. The sample above would +be specified as: modprobe sym53c8xx cmd_per_lun=4 sync=10 debug=0x200 or on the kernel boot line as: diff --git a/drivers/scsi/sym53c8xx_2/sym53c8xx.h b/drivers/scsi/sym53c8xx_2/sym53c8xx.h index 7519728..62d29cf 100644 --- a/drivers/scsi/sym53c8xx_2/sym53c8xx.h +++ b/drivers/scsi/sym53c8xx_2/sym53c8xx.h @@ -127,7 +127,6 @@ struct sym_driver_setup { u_char settle_delay; u_char use_nvram; u_long excludes[8]; - char tag_ctrl[100]; }; #define SYM_SETUP_MAX_TAG sym_driver_setup.max_tag diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c index 6e768c5..c1d9f69 100644 --- a/drivers/scsi/sym53c8xx_2/sym_glue.c +++ b/drivers/scsi/sym53c8xx_2/sym_glue.c @@ -63,7 +63,6 @@ unsigned int sym_debug_flags = 0; static char *excl_string; static char *safe_string; module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); -module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0); module_param_named(burst, sym_driver_setup.burst_order, byte, 0); module_param_named(led, sym_driver_setup.scsi_led, byte, 0); module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); @@ -78,7 +77,6 @@ module_param_named(excl, excl_string, charp, 0); module_param_named(safe, safe_string, charp, 0); MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); -MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN"); MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); @@ -744,59 +742,6 @@ static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) } } -/* - * Linux select queue depths function - */ -#define DEF_DEPTH (sym_driver_setup.max_tag) -#define ALL_TARGETS -2 -#define NO_TARGET -1 -#define ALL_LUNS -2 -#define NO_LUN -1 - -static int device_queue_depth(struct sym_hcb *np, int target, int lun) -{ - int c, h, t, u, v; - char *p = sym_driver_setup.tag_ctrl; - char *ep; - - h = -1; - t = NO_TARGET; - u = NO_LUN; - while ((c = *p++) != 0) { - v = simple_strtoul(p, &ep, 0); - switch(c) { - case '/': - ++h; - t = ALL_TARGETS; - u = ALL_LUNS; - break; - case 't': - if (t != target) - t = (target == v) ? v : NO_TARGET; - u = ALL_LUNS; - break; - case 'u': - if (u != lun) - u = (lun == v) ? v : NO_LUN; - break; - case 'q': - if (h == np->s.unit && - (t == ALL_TARGETS || t == target) && - (u == ALL_LUNS || u == lun)) - return v; - break; - case '-': - t = ALL_TARGETS; - u = ALL_LUNS; - break; - default: - break; - } - p = ep; - } - return DEF_DEPTH; -} - static int sym53c8xx_slave_alloc(struct scsi_device *sdev) { struct sym_hcb *np = sym_get_hcb(sdev->host); @@ -861,21 +806,16 @@ static int sym53c8xx_slave_configure(struct scsi_device *sdev) * Use at least 2. * Donnot use more than our maximum. */ - reqtags = device_queue_depth(np, sdev->id, sdev->lun); + reqtags = sym_driver_setup.max_tag; if (reqtags > tp->usrtags) reqtags = tp->usrtags; if (!sdev->tagged_supported) reqtags = 0; -#if 1 /* Avoid to locally queue commands for no good reasons */ if (reqtags > SYM_CONF_MAX_TAG) reqtags = SYM_CONF_MAX_TAG; - depth_to_use = (reqtags ? reqtags : 2); -#else - depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2); -#endif + depth_to_use = reqtags ? reqtags : 2; scsi_adjust_queue_depth(sdev, - (sdev->tagged_supported ? - MSG_SIMPLE_TAG : 0), + sdev->tagged_supported ? MSG_SIMPLE_TAG : 0, depth_to_use); lp->s.scdev_depth = depth_to_use; sym_tune_dev_queuing(tp, sdev->lun, reqtags); |
