summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/lpfc/lpfc_attr.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_attr.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_attr.c76
1 files changed, 63 insertions, 13 deletions
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index adef5bb2100..b032562aa0d 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -3643,18 +3643,25 @@ lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr,
struct lpfc_hba *phba = vport->phba;
int val = 0, i;
+ /* fcp_imax is only valid for SLI4 */
+ if (phba->sli_rev != LPFC_SLI_REV4)
+ return -EINVAL;
+
/* Sanity check on user data */
if (!isdigit(buf[0]))
return -EINVAL;
if (sscanf(buf, "%i", &val) != 1)
return -EINVAL;
- /* Value range is [636,651042] */
- if (val < LPFC_MIM_IMAX || val > LPFC_DMULT_CONST)
+ /*
+ * Value range for the HBA is [5000,5000000]
+ * The value for each EQ depends on how many EQs are configured.
+ */
+ if (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX)
return -EINVAL;
phba->cfg_fcp_imax = (uint32_t)val;
- for (i = 0; i < phba->cfg_fcp_eq_count; i += LPFC_MAX_EQ_DELAY)
+ for (i = 0; i < phba->cfg_fcp_io_channel; i += LPFC_MAX_EQ_DELAY)
lpfc_modify_fcp_eq_delay(phba, i);
return strlen(buf);
@@ -3662,13 +3669,14 @@ lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr,
/*
# lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
+# for the HBA.
#
-# Value range is [636,651042]. Default value is 10000.
+# Value range is [5,000 to 5,000,000]. Default value is 50,000.
*/
-static int lpfc_fcp_imax = LPFC_FP_DEF_IMAX;
+static int lpfc_fcp_imax = LPFC_DEF_IMAX;
module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(lpfc_fcp_imax,
- "Set the maximum number of fast-path FCP interrupts per second");
+ "Set the maximum number of FCP interrupts per second per HBA");
lpfc_param_show(fcp_imax)
/**
@@ -3687,14 +3695,19 @@ lpfc_param_show(fcp_imax)
static int
lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
{
- if (val >= LPFC_MIM_IMAX && val <= LPFC_DMULT_CONST) {
+ if (phba->sli_rev != LPFC_SLI_REV4) {
+ phba->cfg_fcp_imax = 0;
+ return 0;
+ }
+
+ if (val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) {
phba->cfg_fcp_imax = val;
return 0;
}
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"3016 fcp_imax: %d out of range, using default\n", val);
- phba->cfg_fcp_imax = LPFC_FP_DEF_IMAX;
+ phba->cfg_fcp_imax = LPFC_DEF_IMAX;
return 0;
}
@@ -3765,6 +3778,16 @@ static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR,
LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
/*
+# lpfc_fcp_io_sched: Determine scheduling algrithmn for issuing FCP cmds
+# range is [0,1]. Default value is 0.
+# For [0], FCP commands are issued to Work Queues ina round robin fashion.
+# For [1], FCP commands are issued to a Work Queue associated with the
+# current CPU.
+*/
+LPFC_ATTR_RW(fcp_io_sched, 0, 0, 1, "Determine scheduling algrithmn for "
+ "issuing commands [0] - Round Robin, [1] - Current CPU");
+
+/*
# lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
# cr_delay (msec) or cr_count outstanding commands. cr_delay can take
# value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
@@ -3844,21 +3867,33 @@ LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
/*
# lpfc_fcp_wq_count: Set the number of fast-path FCP work queues
+# This parameter is ignored and will eventually be depricated
#
-# Value range is [1,31]. Default value is 4.
+# Value range is [1,7]. Default value is 4.
*/
-LPFC_ATTR_R(fcp_wq_count, LPFC_FP_WQN_DEF, LPFC_FP_WQN_MIN, LPFC_FP_WQN_MAX,
+LPFC_ATTR_R(fcp_wq_count, LPFC_FCP_IO_CHAN_DEF, LPFC_FCP_IO_CHAN_MIN,
+ LPFC_FCP_IO_CHAN_MAX,
"Set the number of fast-path FCP work queues, if possible");
/*
-# lpfc_fcp_eq_count: Set the number of fast-path FCP event queues
+# lpfc_fcp_eq_count: Set the number of FCP EQ/CQ/WQ IO channels
#
-# Value range is [1,7]. Default value is 1.
+# Value range is [1,7]. Default value is 4.
*/
-LPFC_ATTR_R(fcp_eq_count, LPFC_FP_EQN_DEF, LPFC_FP_EQN_MIN, LPFC_FP_EQN_MAX,
+LPFC_ATTR_R(fcp_eq_count, LPFC_FCP_IO_CHAN_DEF, LPFC_FCP_IO_CHAN_MIN,
+ LPFC_FCP_IO_CHAN_MAX,
"Set the number of fast-path FCP event queues, if possible");
/*
+# lpfc_fcp_io_channel: Set the number of FCP EQ/CQ/WQ IO channels
+#
+# Value range is [1,7]. Default value is 4.
+*/
+LPFC_ATTR_R(fcp_io_channel, LPFC_FCP_IO_CHAN_DEF, LPFC_FCP_IO_CHAN_MIN,
+ LPFC_FCP_IO_CHAN_MAX,
+ "Set the number of FCP I/O channels");
+
+/*
# lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
# 0 = HBA resets disabled
# 1 = HBA resets enabled (default)
@@ -3883,6 +3918,17 @@ LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support");
/*
+# lpfc_fcp_look_ahead: Look ahead for completions in FCP start routine
+# 0 = disabled (default)
+# 1 = enabled
+# Value range is [0,1]. Default value is 0.
+*/
+unsigned int lpfc_fcp_look_ahead = LPFC_LOOK_AHEAD_OFF;
+
+module_param(lpfc_fcp_look_ahead, uint, S_IRUGO);
+MODULE_PARM_DESC(lpfc_fcp_look_ahead, "Look ahead for completions");
+
+/*
# lpfc_prot_mask: i
# - Bit mask of host protection capabilities used to register with the
# SCSI mid-layer
@@ -3976,6 +4022,7 @@ struct device_attribute *lpfc_hba_attrs[] = {
&dev_attr_lpfc_topology,
&dev_attr_lpfc_scan_down,
&dev_attr_lpfc_link_speed,
+ &dev_attr_lpfc_fcp_io_sched,
&dev_attr_lpfc_cr_delay,
&dev_attr_lpfc_cr_count,
&dev_attr_lpfc_multi_ring_support,
@@ -4002,6 +4049,7 @@ struct device_attribute *lpfc_hba_attrs[] = {
&dev_attr_lpfc_fcp_imax,
&dev_attr_lpfc_fcp_wq_count,
&dev_attr_lpfc_fcp_eq_count,
+ &dev_attr_lpfc_fcp_io_channel,
&dev_attr_lpfc_enable_bg,
&dev_attr_lpfc_soft_wwnn,
&dev_attr_lpfc_soft_wwpn,
@@ -4964,6 +5012,7 @@ struct fc_function_template lpfc_vport_transport_functions = {
void
lpfc_get_cfgparam(struct lpfc_hba *phba)
{
+ lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
lpfc_cr_delay_init(phba, lpfc_cr_delay);
lpfc_cr_count_init(phba, lpfc_cr_count);
lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
@@ -4980,6 +5029,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
lpfc_fcp_wq_count_init(phba, lpfc_fcp_wq_count);
lpfc_fcp_eq_count_init(phba, lpfc_fcp_eq_count);
+ lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel);
lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
lpfc_enable_bg_init(phba, lpfc_enable_bg);