[SCSI] lpfc 8.1.2: Add ERROR and WARM_START modes for diagnostic purposes.

[linux-2.6-omap-h63xx.git] / drivers / scsi / lpfc / lpfc_init.c

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index b7a603a45328f2dd95753f7384f56ef2e1ec7c02..391ca50293f2a5a6dca187291d86e867ea8e418c 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1,7 +1,7 @@
 /*******************************************************************
  * This file is part of the Emulex Linux Device Driver for         *
  * Fibre Channel Host Bus Adapters.                                *
- * Copyright (C) 2004-2005 Emulex.  All rights reserved.           *
+ * Copyright (C) 2004-2006 Emulex.  All rights reserved.           *
  * EMULEX and SLI are trademarks of Emulex.                        *
  * www.emulex.com                                                  *
  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
@@ -459,9 +459,45 @@ lpfc_hba_down_prep(struct lpfc_hba * phba)
        lpfc_els_flush_cmd(phba);
        lpfc_disc_flush_list(phba);
 
+       /* Disable SLI2 since we disabled interrupts */
+       phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
        return (0);
 }
 
+/************************************************************************/
+/*                                                                      */
+/*    lpfc_hba_down_post                                                */
+/*    This routine will do uninitialization after the HBA is reset      */
+/*    when bringing down the SLI Layer.                                 */
+/*    This routine returns 0 on success. Any other return value         */
+/*    indicates an error.                                               */
+/*                                                                      */
+/************************************************************************/
+int
+lpfc_hba_down_post(struct lpfc_hba * phba)
+{
+       struct lpfc_sli *psli = &phba->sli;
+       struct lpfc_sli_ring *pring;
+       struct lpfc_dmabuf *mp, *next_mp;
+       int i;
+
+       /* Cleanup preposted buffers on the ELS ring */
+       pring = &psli->ring[LPFC_ELS_RING];
+       list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
+               list_del(&mp->list);
+               pring->postbufq_cnt--;
+               lpfc_mbuf_free(phba, mp->virt, mp->phys);
+               kfree(mp);
+       }
+
+       for (i = 0; i < psli->num_rings; i++) {
+               pring = &psli->ring[i];
+               lpfc_sli_abort_iocb_ring(phba, pring);
+       }
+
+       return 0;
+}
+
 /************************************************************************/
 /*                                                                      */
 /*    lpfc_handle_eratt                                                 */
@@ -476,20 +512,6 @@ lpfc_handle_eratt(struct lpfc_hba * phba)
        struct lpfc_sli *psli = &phba->sli;
        struct lpfc_sli_ring  *pring;
 
-       /*
-        * If a reset is sent to the HBA restore PCI configuration registers.
-        */
-       if ( phba->hba_state == LPFC_INIT_START ) {
-               mdelay(1);
-               readl(phba->HCregaddr); /* flush */
-               writel(0, phba->HCregaddr);
-               readl(phba->HCregaddr); /* flush */
-
-               /* Restore PCI cmd register */
-               pci_write_config_word(phba->pcidev,
-                                     PCI_COMMAND, phba->pci_cfg_value);
-       }
-
        if (phba->work_hs & HS_FFER6) {
                /* Re-establishing Link */
                lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
@@ -516,6 +538,7 @@ lpfc_handle_eratt(struct lpfc_hba * phba)
                 * attempt to restart it.
                 */
                lpfc_offline(phba);
+               lpfc_sli_brdrestart(phba);
                if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
                        mod_timer(&phba->fc_estabtmo, jiffies + HZ * 60);
                        return;
@@ -532,7 +555,8 @@ lpfc_handle_eratt(struct lpfc_hba * phba)
                                phba->work_status[0], phba->work_status[1]);
 
                lpfc_offline(phba);
-
+               phba->hba_state = LPFC_HBA_ERROR;
+               lpfc_hba_down_post(phba);
        }
 }
 
@@ -1462,9 +1486,23 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
        phba->pci_bar2_map = pci_resource_start(phba->pcidev, 2);
        bar2map_len        = pci_resource_len(phba->pcidev, 2);
 
-       /* Map HBA SLIM and Control Registers to a kernel virtual address. */
+       /* Map HBA SLIM to a kernel virtual address. */
        phba->slim_memmap_p      = ioremap(phba->pci_bar0_map, bar0map_len);
+       if (!phba->slim_memmap_p) {
+               error = -ENODEV;
+               dev_printk(KERN_ERR, &pdev->dev,
+                          "ioremap failed for SLIM memory.\n");
+               goto out_idr_remove;
+       }
+
+       /* Map HBA Control Registers to a kernel virtual address. */
        phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
+       if (!phba->ctrl_regs_memmap_p) {
+               error = -ENODEV;
+               dev_printk(KERN_ERR, &pdev->dev,
+                          "ioremap failed for HBA control registers.\n");
+               goto out_iounmap_slim;
+       }
 
        /* Allocate memory for SLI-2 structures */
        phba->slim2p = dma_alloc_coherent(&phba->pcidev->dev, SLI2_SLIM_SIZE,
@@ -1539,7 +1577,6 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
        INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
 
        host->transportt = lpfc_transport_template;
-       host->hostdata[0] = (unsigned long)phba;
        pci_set_drvdata(pdev, host);
        error = scsi_add_host(host, &pdev->dev);
        if (error)
@@ -1643,6 +1680,7 @@ out_free_slim:
                                                        phba->slim2p_mapping);
 out_iounmap:
        iounmap(phba->ctrl_regs_memmap_p);
+out_iounmap_slim:
        iounmap(phba->slim_memmap_p);
 out_idr_remove:
        idr_remove(&lpfc_hba_index, phba->brd_no);
@@ -1660,7 +1698,7 @@ static void __devexit
 lpfc_pci_remove_one(struct pci_dev *pdev)
 {
        struct Scsi_Host   *host = pci_get_drvdata(pdev);
-       struct lpfc_hba    *phba = (struct lpfc_hba *)host->hostdata[0];
+       struct lpfc_hba    *phba = (struct lpfc_hba *)host->hostdata;
        unsigned long iflag;
 
        lpfc_free_sysfs_attr(phba);
@@ -1681,6 +1719,7 @@ lpfc_pci_remove_one(struct pci_dev *pdev)
         * the HBA.
         */
        lpfc_sli_hba_down(phba);
+       lpfc_sli_brdrestart(phba);
 
        /* Release the irq reservation */
        free_irq(phba->pcidev->irq, phba);