[SCSI] pm80xx: NCQ error handling changes

Handled NCQ errors in the low level driver as the FW
is not providing the faulty tag for NCQ errors for libsas
to recover.

[jejb: fix checkpatch issues]
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>

drivers/scsi/pm8001/pm8001_sas.c

@@ -68,7 +68,7 @@ static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag)
 	clear_bit(tag, bitmap);
 }
 
-static void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
+void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
 {
 	pm8001_tag_clear(pm8001_ha, tag);
 }
@@ -565,6 +565,24 @@ struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
 	}
 	return NULL;
 }
+/**
+  * pm8001_find_dev - find a matching pm8001_device
+  * @pm8001_ha: our hba card information
+  */
+struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
+					u32 device_id)
+{
+	u32 dev;
+	for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
+		if (pm8001_ha->devices[dev].device_id == device_id)
+			return &pm8001_ha->devices[dev];
+	}
+	if (dev == PM8001_MAX_DEVICES) {
+		PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING "
+				"DEVICE FOUND !!!\n"));
+	}
+	return NULL;
+}
 
 static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
 {
@@ -653,7 +671,7 @@ int pm8001_dev_found(struct domain_device *dev)
 	return pm8001_dev_found_notify(dev);
 }
 
-static void pm8001_task_done(struct sas_task *task)
+void pm8001_task_done(struct sas_task *task)
 {
 	if (!del_timer(&task->slow_task->timer))
 		return;

drivers/scsi/pm8001/pm8001_sas.h

@@ -321,7 +321,9 @@ union main_cfg_table {
 	u32			inbound_queue_offset;
 	u32			outbound_queue_offset;
 	u32			inbound_q_nppd_hppd;
-	u32			rsvd[10];
+	u32			rsvd[8];
+	u32			crc_core_dump;
+	u32			rsvd1;
 	u32			upper_event_log_addr;
 	u32			lower_event_log_addr;
 	u32			event_log_size;
@@ -493,6 +495,9 @@ struct pm8001_fw_image_header {
 #define FLASH_UPDATE_DNLD_NOT_SUPPORTED		0x10
 #define FLASH_UPDATE_DISABLED			0x11
 
+#define	NCQ_READ_LOG_FLAG			0x80000000
+#define	NCQ_ABORT_ALL_FLAG			0x40000000
+#define	NCQ_2ND_RLE_FLAG			0x20000000
 /**
  * brief param structure for firmware flash update.
  */
@@ -567,7 +572,6 @@ int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
 	dma_addr_t *pphys_addr, u32 *pphys_addr_hi, u32 *pphys_addr_lo,
 	u32 mem_size, u32 align);
 
-/********** functions common to spc & spcv - begins ************/
 void pm8001_chip_iounmap(struct pm8001_hba_info *pm8001_ha);
 int pm8001_mpi_build_cmd(struct pm8001_hba_info *pm8001_ha,
 			struct inbound_queue_table *circularQ,
@@ -615,7 +619,12 @@ int pm8001_mpi_fw_flash_update_resp(struct pm8001_hba_info *pm8001_ha,
 							void *piomb);
 int pm8001_mpi_general_event(struct pm8001_hba_info *pm8001_ha , void *piomb);
 int pm8001_mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb);
-/*********** functions common to spc & spcv - ends ************/
+struct sas_task *pm8001_alloc_task(void);
+void pm8001_task_done(struct sas_task *task);
+void pm8001_free_task(struct sas_task *task);
+void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag);
+struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
+					u32 device_id);
 
 int pm8001_bar4_shift(struct pm8001_hba_info *pm8001_ha, u32 shiftValue);
 

drivers/scsi/pm8001/pm80xx_hwi.h

@@ -1278,6 +1278,7 @@ struct ssp_coalesced_comp_resp {
 #define MAIN_IQNPPD_HPPD_OFFSET		0x24 /* DWORD 0x09 */
 
 /* 0x28 - 0x4C - RSVD */
+#define MAIN_EVENT_CRC_CHECK		0x48 /* DWORD 0x12 */
 #define MAIN_EVENT_LOG_ADDR_HI		0x50 /* DWORD 0x14 */
 #define MAIN_EVENT_LOG_ADDR_LO		0x54 /* DWORD 0x15 */
 #define MAIN_EVENT_LOG_BUFF_SIZE	0x58 /* DWORD 0x16 */