[SCSI] qla2xxx: T10 DIF support added.
Signed-off-by: Duane Grigsby <duane.grigsby@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 0d2cecb..4559f5c 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -189,6 +189,16 @@
struct req_que;
/*
+ * (sd.h is not exported, hence local inclusion)
+ * Data Integrity Field tuple.
+ */
+struct sd_dif_tuple {
+ __be16 guard_tag; /* Checksum */
+ __be16 app_tag; /* Opaque storage */
+ __be32 ref_tag; /* Target LBA or indirect LBA */
+};
+
+/*
* SCSI Request Block
*/
typedef struct srb {
@@ -208,8 +218,14 @@
/*
* SRB flag definitions
*/
-#define SRB_DMA_VALID BIT_0 /* Command sent to ISP */
-#define SRB_FCP_CMND_DMA_VALID BIT_12 /* FCP command in IOCB */
+#define SRB_DMA_VALID BIT_0 /* Command sent to ISP */
+#define SRB_FCP_CMND_DMA_VALID BIT_12 /* DIF: DSD List valid */
+#define SRB_CRC_CTX_DMA_VALID BIT_2 /* DIF: context DMA valid */
+#define SRB_CRC_PROT_DMA_VALID BIT_4 /* DIF: prot DMA valid */
+#define SRB_CRC_CTX_DSD_VALID BIT_5 /* DIF: dsd_list valid */
+
+/* To identify if a srb is of T10-CRC type. @sp => srb_t pointer */
+#define IS_PROT_IO(sp) (sp->flags & SRB_CRC_CTX_DSD_VALID)
/*
* SRB extensions.
@@ -1330,6 +1346,66 @@
uint32_t dseg_4_length; /* Data segment 4 length. */
} cont_a64_entry_t;
+#define PO_MODE_DIF_INSERT 0
+#define PO_MODE_DIF_REMOVE BIT_0
+#define PO_MODE_DIF_PASS BIT_1
+#define PO_MODE_DIF_REPLACE (BIT_0 + BIT_1)
+#define PO_ENABLE_DIF_BUNDLING BIT_8
+#define PO_ENABLE_INCR_GUARD_SEED BIT_3
+#define PO_DISABLE_INCR_REF_TAG BIT_5
+#define PO_DISABLE_GUARD_CHECK BIT_4
+/*
+ * ISP queue - 64-Bit addressing, continuation crc entry structure definition.
+ */
+struct crc_context {
+ uint32_t handle; /* System handle. */
+ uint32_t ref_tag;
+ uint16_t app_tag;
+ uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
+ uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
+ uint16_t guard_seed; /* Initial Guard Seed */
+ uint16_t prot_opts; /* Requested Data Protection Mode */
+ uint16_t blk_size; /* Data size in bytes */
+ uint16_t runt_blk_guard; /* Guard value for runt block (tape
+ * only) */
+ uint32_t byte_count; /* Total byte count/ total data
+ * transfer count */
+ union {
+ struct {
+ uint32_t reserved_1;
+ uint16_t reserved_2;
+ uint16_t reserved_3;
+ uint32_t reserved_4;
+ uint32_t data_address[2];
+ uint32_t data_length;
+ uint32_t reserved_5[2];
+ uint32_t reserved_6;
+ } nobundling;
+ struct {
+ uint32_t dif_byte_count; /* Total DIF byte
+ * count */
+ uint16_t reserved_1;
+ uint16_t dseg_count; /* Data segment count */
+ uint32_t reserved_2;
+ uint32_t data_address[2];
+ uint32_t data_length;
+ uint32_t dif_address[2];
+ uint32_t dif_length; /* Data segment 0
+ * length */
+ } bundling;
+ } u;
+
+ struct fcp_cmnd fcp_cmnd;
+ dma_addr_t crc_ctx_dma;
+ /* List of DMA context transfers */
+ struct list_head dsd_list;
+
+ /* This structure should not exceed 512 bytes */
+};
+
+#define CRC_CONTEXT_LEN_FW (offsetof(struct crc_context, fcp_cmnd.lun))
+#define CRC_CONTEXT_FCPCMND_OFF (offsetof(struct crc_context, fcp_cmnd.lun))
+
/*
* ISP queue - status entry structure definition.
*/
@@ -1390,6 +1466,7 @@
#define CS_ABORTED 0x5 /* System aborted command. */
#define CS_TIMEOUT 0x6 /* Timeout error. */
#define CS_DATA_OVERRUN 0x7 /* Data overrun. */
+#define CS_DIF_ERROR 0xC /* DIF error detected */
#define CS_DATA_UNDERRUN 0x15 /* Data Underrun. */
#define CS_QUEUE_FULL 0x1C /* Queue Full. */
@@ -2732,6 +2809,7 @@
uint32_t management_server_logged_in :1;
uint32_t process_response_queue :1;
+ uint32_t difdix_supported:1;
} flags;
atomic_t loop_state;
@@ -2883,6 +2961,8 @@
#define OPTROM_BURST_SIZE 0x1000
#define OPTROM_BURST_DWORDS (OPTROM_BURST_SIZE / 4)
+#define QLA_DSDS_PER_IOCB 37
+
#include "qla_gbl.h"
#include "qla_dbg.h"
#include "qla_inline.h"