[SCSI] lpfc 8.3.13: Add TX Queue Support for SLI4 ELS commands.

[deliverable/linux.git] / drivers / scsi / lpfc / lpfc_attr.c

diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index b17fe5149e38d91fd363afa30cb66ba25c3c67b4..39b0760c438d0dba811a22bee032348699b836b1 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -1949,6 +1949,59 @@ static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL);
 LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
                LPFC_DELAY_INIT_LINK_INDEFINITELY,
                "Suppress Link Up at initialization");
+/*
+# lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS
+#       1 - (1024)
+#       2 - (2048)
+#       3 - (3072)
+#       4 - (4096)
+#       5 - (5120)
+*/
+static ssize_t
+lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct Scsi_Host  *shost = class_to_shost(dev);
+       struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
+
+       return snprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max);
+}
+
+static DEVICE_ATTR(iocb_hw, S_IRUGO,
+                        lpfc_iocb_hw_show, NULL);
+static ssize_t
+lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+       struct Scsi_Host  *shost = class_to_shost(dev);
+       struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
+
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+               phba->sli.ring[LPFC_ELS_RING].txq_max);
+}
+
+static DEVICE_ATTR(txq_hw, S_IRUGO,
+                        lpfc_txq_hw_show, NULL);
+static ssize_t
+lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+       struct Scsi_Host  *shost = class_to_shost(dev);
+       struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
+
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+               phba->sli.ring[LPFC_ELS_RING].txcmplq_max);
+}
+
+static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
+                        lpfc_txcmplq_hw_show, NULL);
+
+int lpfc_iocb_cnt = 2;
+module_param(lpfc_iocb_cnt, int, 1);
+MODULE_PARM_DESC(lpfc_iocb_cnt,
+       "Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs");
+lpfc_param_show(iocb_cnt);
+lpfc_param_init(iocb_cnt, 2, 1, 5);
+static DEVICE_ATTR(lpfc_iocb_cnt, S_IRUGO,
+                        lpfc_iocb_cnt_show, NULL);
 
 /*
 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
@@ -3334,6 +3387,10 @@ struct device_attribute *lpfc_hba_attrs[] = {
        &dev_attr_lpfc_aer_support,
        &dev_attr_lpfc_aer_state_cleanup,
        &dev_attr_lpfc_suppress_link_up,
+       &dev_attr_lpfc_iocb_cnt,
+       &dev_attr_iocb_hw,
+       &dev_attr_txq_hw,
+       &dev_attr_txcmplq_hw,
        NULL,
 };
 
@@ -4521,6 +4578,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
        lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
        lpfc_aer_support_init(phba, lpfc_aer_support);
        lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
+       lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt);
        return;
 }