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authorJames Smart <james.smart@emulex.com>2010-02-12 14:42:33 -0500
committerJames Bottomley <James.Bottomley@suse.de>2010-02-17 17:41:04 -0600
commit84d1b006978e78e27f22beb5cfbc4d349bac6df7 (patch)
tree0bb3f71b6a5389a8570e49493431d77b6ee5993c /drivers/scsi/lpfc/lpfc_init.c
parent28baac7492fa084dbff6a1b9c4b42ed0d014b558 (diff)
[SCSI] lpfc 8.3.9: Changes to sysfs interface for the lpfc driver.
- Convert all sysfs parameters to uint instead of int. - Add lpfc_supress_link_up parameter. - Change link_state to writable sysfs parameter. - Add support to be able to "up" or "down" link from link_state parameter. Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_init.c100
1 files changed, 99 insertions, 1 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index b0b7bb39f05..89d886c72e0 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -544,7 +544,7 @@ lpfc_config_port_post(struct lpfc_hba *phba)
mempool_free(pmb, phba->mbox_mem_pool);
return -EIO;
}
- } else {
+ } else if (phba->cfg_suppress_link_up == 0) {
lpfc_init_link(phba, pmb, phba->cfg_topology,
phba->cfg_link_speed);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
@@ -603,6 +603,102 @@ lpfc_config_port_post(struct lpfc_hba *phba)
}
/**
+ * lpfc_hba_init_link - Initialize the FC link
+ * @phba: pointer to lpfc hba data structure.
+ *
+ * This routine will issue the INIT_LINK mailbox command call.
+ * It is available to other drivers through the lpfc_hba data
+ * structure for use as a delayed link up mechanism with the
+ * module parameter lpfc_suppress_link_up.
+ *
+ * Return code
+ * 0 - success
+ * Any other value - error
+ **/
+int
+lpfc_hba_init_link(struct lpfc_hba *phba)
+{
+ struct lpfc_vport *vport = phba->pport;
+ LPFC_MBOXQ_t *pmb;
+ MAILBOX_t *mb;
+ int rc;
+
+ pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmb) {
+ phba->link_state = LPFC_HBA_ERROR;
+ return -ENOMEM;
+ }
+ mb = &pmb->u.mb;
+ pmb->vport = vport;
+
+ lpfc_init_link(phba, pmb, phba->cfg_topology,
+ phba->cfg_link_speed);
+ pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ lpfc_set_loopback_flag(phba);
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+ if (rc != MBX_SUCCESS) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+ "0498 Adapter failed to init, mbxCmd x%x "
+ "INIT_LINK, mbxStatus x%x\n",
+ mb->mbxCommand, mb->mbxStatus);
+ /* Clear all interrupt enable conditions */
+ writel(0, phba->HCregaddr);
+ readl(phba->HCregaddr); /* flush */
+ /* Clear all pending interrupts */
+ writel(0xffffffff, phba->HAregaddr);
+ readl(phba->HAregaddr); /* flush */
+ phba->link_state = LPFC_HBA_ERROR;
+ if (rc != MBX_BUSY)
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return -EIO;
+ }
+ phba->cfg_suppress_link_up = 0;
+
+ return 0;
+}
+
+/**
+ * lpfc_hba_down_link - this routine downs the FC link
+ *
+ * This routine will issue the DOWN_LINK mailbox command call.
+ * It is available to other drivers through the lpfc_hba data
+ * structure for use to stop the link.
+ *
+ * Return code
+ * 0 - success
+ * Any other value - error
+ **/
+int
+lpfc_hba_down_link(struct lpfc_hba *phba)
+{
+ LPFC_MBOXQ_t *pmb;
+ int rc;
+
+ pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
+ if (!pmb) {
+ phba->link_state = LPFC_HBA_ERROR;
+ return -ENOMEM;
+ }
+
+ lpfc_printf_log(phba,
+ KERN_ERR, LOG_INIT,
+ "0491 Adapter Link is disabled.\n");
+ lpfc_down_link(phba, pmb);
+ pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
+ rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
+ if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
+ lpfc_printf_log(phba,
+ KERN_ERR, LOG_INIT,
+ "2522 Adapter failed to issue DOWN_LINK"
+ " mbox command rc 0x%x\n", rc);
+
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return -EIO;
+ }
+ return 0;
+}
+
+/**
* lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
* @phba: pointer to lpfc HBA data structure.
*
@@ -3952,6 +4048,8 @@ lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
int
lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
{
+ phba->lpfc_hba_init_link = lpfc_hba_init_link;
+ phba->lpfc_hba_down_link = lpfc_hba_down_link;
switch (dev_grp) {
case LPFC_PCI_DEV_LP:
phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;