[SCSI] pm80xx: WWN Modification for PM8081/88/89 controllers

Individual WWN read operations based on controller.
PM8081 - Read WWN from Flash VPD.
PM8088/89 - Read WWN from EEPROM.
PM8001 - Read WWN from NVM.

Signed-off-by: Sakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: Anand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 0c14dc0..055f7d0 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -605,21 +605,50 @@ static void  pm8001_post_sas_ha_init(struct Scsi_Host *shost,
  */
 static void pm8001_init_sas_add(struct pm8001_hba_info *pm8001_ha)
 {
-       u8 i;
+       u8 i, j;
 #ifdef PM8001_READ_VPD
+       /* For new SPC controllers WWN is stored in flash vpd
+       *  For SPC/SPCve controllers WWN is stored in EEPROM
+       *  For Older SPC WWN is stored in NVMD
+       */
        DECLARE_COMPLETION_ONSTACK(completion);
        struct pm8001_ioctl_payload payload;
+       u16 deviceid;
+       pci_read_config_word(pm8001_ha->pdev, PCI_DEVICE_ID, &deviceid);
        pm8001_ha->nvmd_completion = &completion;
-       payload.minor_function = 0;
-       payload.length = 128;
-       payload.func_specific = kzalloc(128, GFP_KERNEL);
+
+       if (pm8001_ha->chip_id == chip_8001) {
+               if (deviceid == 0x8081) {
+                       payload.minor_function = 4;
+                       payload.length = 4096;
+               } else {
+                       payload.minor_function = 0;
+                       payload.length = 128;
+               }
+       } else {
+               payload.minor_function = 1;
+               payload.length = 4096;
+       }
+       payload.offset = 0;
+       payload.func_specific = kzalloc(payload.length, GFP_KERNEL);
        PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
        wait_for_completion(&completion);
+
+       for (i = 0, j = 0; i <= 7; i++, j++) {
+               if (pm8001_ha->chip_id == chip_8001) {
+                       if (deviceid == 0x8081)
+                               pm8001_ha->sas_addr[j] =
+                                       payload.func_specific[0x704 + i];
+               } else
+                       pm8001_ha->sas_addr[j] =
+                                       payload.func_specific[0x804 + i];
+       }
+
        for (i = 0; i < pm8001_ha->chip->n_phy; i++) {
-               memcpy(&pm8001_ha->phy[i].dev_sas_addr, pm8001_ha->sas_addr,
-                       SAS_ADDR_SIZE);
+               memcpy(&pm8001_ha->phy[i].dev_sas_addr,
+                       pm8001_ha->sas_addr, SAS_ADDR_SIZE);
                PM8001_INIT_DBG(pm8001_ha,
-                       pm8001_printk("phy %d sas_addr = %016llx \n", i,
+                       pm8001_printk("phy %d sas_addr = %016llx\n", i,
                        pm8001_ha->phy[i].dev_sas_addr));
        }
 #else