[SCSI] hpsa: add ioaccel mode 2 structure definitions

Signed-off-by: Mike Miller <michael.miller@canonical.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

3 files changed, 129 insertions, 0 deletions

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 9fdcb189b024..e55e787f5092 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -6134,6 +6134,28 @@ static void __exit hpsa_cleanup(void)
 static void __attribute__((unused)) verify_offsets(void)
 {
 #define VERIFY_OFFSET(member, offset) \
+        BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
+
+        VERIFY_OFFSET(IU_type, 0);
+        VERIFY_OFFSET(direction, 1);
+        VERIFY_OFFSET(reply_queue, 2);
+        /* VERIFY_OFFSET(reserved1, 3);  */
+        VERIFY_OFFSET(scsi_nexus, 4);
+        VERIFY_OFFSET(Tag, 8);
+        VERIFY_OFFSET(cdb, 16);
+        VERIFY_OFFSET(cciss_lun, 32);
+        VERIFY_OFFSET(data_len, 40);
+        VERIFY_OFFSET(cmd_priority_task_attr, 44);
+        VERIFY_OFFSET(sg_count, 45);
+        /* VERIFY_OFFSET(reserved3 */
+        VERIFY_OFFSET(err_ptr, 48);
+        VERIFY_OFFSET(err_len, 56);
+        /* VERIFY_OFFSET(reserved4  */
+        VERIFY_OFFSET(sg, 64);
+
+#undef VERIFY_OFFSET
+
+#define VERIFY_OFFSET(member, offset) \
         BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
 
         VERIFY_OFFSET(dev_handle, 0x00);
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index df2f88df10be..74eb22af4506 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -258,6 +258,14 @@ struct ctlr_info {
 
 #define HPSA_INTR_ON    1
 #define HPSA_INTR_OFF   0
+
+/*
+ * Inbound Post Queue offsets for IO Accelerator Mode 2
+ */
+#define IOACCEL2_INBOUND_POSTQ_32       0x48
+#define IOACCEL2_INBOUND_POSTQ_64_LOW   0xd0
+#define IOACCEL2_INBOUND_POSTQ_64_HI    0xd4
+
 /*
         Send the command to the hardware
 */
diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 21f8a616e997..9e00988817f3 100644
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -332,6 +332,7 @@ struct ErrorInfo {
 #define CMD_IOCTL_PEND  0x01
 #define CMD_SCSI        0x03
 #define CMD_IOACCEL1    0x04
+#define CMD_IOACCEL2    0x05
 
 #define DIRECT_LOOKUP_SHIFT 5
 #define DIRECT_LOOKUP_BIT 0x10
@@ -384,6 +385,7 @@ struct CommandList {
 
 /* Max S/G elements in I/O accelerator command */
 #define IOACCEL1_MAXSGENTRIES           24
+#define IOACCEL2_MAXSGENTRIES           28
 
 /*
  * Structure for I/O accelerator (mode 1) commands.
@@ -444,6 +446,103 @@ struct io_accel1_cmd {
 
 #define IOACCEL1_BUSADDR_CMDTYPE        0x00000060
 
+struct ioaccel2_sg_element {
+        u64 address;
+        u32 length;
+        u8 reserved[3];
+        u8 chain_indicator;
+#define IOACCEL2_CHAIN 0x80
+};
+
+/*
+ * SCSI Response Format structure for IO Accelerator Mode 2
+ */
+struct io_accel2_scsi_response {
+        u8 IU_type;
+#define IOACCEL2_IU_TYPE_SRF                    0x60
+        u8 reserved1[3];
+        u8 req_id[4];           /* request identifier */
+        u8 reserved2[4];
+        u8 serv_response;               /* service response */
+#define IOACCEL2_SERV_RESPONSE_COMPLETE         0x000
+#define IOACCEL2_SERV_RESPONSE_FAILURE          0x001
+#define IOACCEL2_SERV_RESPONSE_TMF_COMPLETE     0x002
+#define IOACCEL2_SERV_RESPONSE_TMF_SUCCESS      0x003
+#define IOACCEL2_SERV_RESPONSE_TMF_REJECTED     0x004
+#define IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN    0x005
+        u8 status;                      /* status */
+#define IOACCEL2_STATUS_SR_TASK_COMP_GOOD       0x00
+#define IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND   0x02
+#define IOACCEL2_STATUS_SR_TASK_COMP_BUSY       0x08
+#define IOACCEL2_STATUS_SR_TASK_COMP_RES_CON    0x18
+#define IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL   0x28
+#define IOACCEL2_STATUS_SR_TASK_COMP_ABORTED    0x40
+        u8 data_present;                /* low 2 bits */
+#define IOACCEL2_NO_DATAPRESENT         0x000
+#define IOACCEL2_RESPONSE_DATAPRESENT   0x001
+#define IOACCEL2_SENSE_DATA_PRESENT     0x002
+#define IOACCEL2_RESERVED               0x003
+        u8 sense_data_len;              /* sense/response data length */
+        u8 resid_cnt[4];                /* residual count */
+        u8 sense_data_buff[32];         /* sense/response data buffer */
+};
+
+#define IOACCEL2_64_PAD 76
+#define IOACCEL2_32_PAD 76
+#define IOACCEL2_PAD (IS_32_BIT * IOACCEL2_32_PAD + \
+                        IS_64_BIT * IOACCEL2_64_PAD)
+/*
+ * Structure for I/O accelerator (mode 2 or m2) commands.
+ * Note that this structure must be 128-byte aligned in size.
+ */
+struct io_accel2_cmd {
+        u8  IU_type;                    /* IU Type */
+        u8  direction;                  /* Transfer direction, 2 bits */
+        u8  reply_queue;                /* Reply Queue ID */
+        u8  reserved1;                  /* Reserved */
+        u32 scsi_nexus;                 /* Device Handle */
+        struct vals32 Tag;              /* cciss tag */
+        u8  cdb[16];                    /* SCSI Command Descriptor Block */
+        u8  cciss_lun[8];               /* 8 byte SCSI address */
+        u32 data_len;                   /* Total bytes to transfer */
+        u8  cmd_priority_task_attr;     /* priority and task attrs */
+#define IOACCEL2_PRIORITY_MASK 0x78
+#define IOACCEL2_ATTR_MASK 0x07
+        u8  sg_count;                   /* Number of sg elements */
+        u8  reserved3[2];               /* Reserved */
+        u64 err_ptr;                    /* Error Pointer */
+        u32 err_len;                    /* Error Length*/
+        u8 reserved4[4];                /* Reserved */
+        struct ioaccel2_sg_element sg[IOACCEL2_MAXSGENTRIES];
+        struct io_accel2_scsi_response error_data;
+        u8 pad[IOACCEL2_PAD];
+};
+
+/*
+ * defines for Mode 2 command struct
+ * FIXME: this can't be all I need mfm
+ */
+#define IOACCEL2_IU_TYPE        0x40
+#define IU_TYPE_TMF             0x41
+#define IOACCEL2_DIR_NO_DATA    0x00
+#define IOACCEL2_DIR_DATA_IN    0x01
+#define IOACCEL2_DIR_DATA_OUT   0x02
+/*
+ * SCSI Task Management Request format for Accelerator Mode 2
+ */
+struct hpsa_tmf_struct {
+        u8 iu_type;             /* Information Unit Type */
+        u8 reply_queue;         /* Reply Queue ID */
+        u8 tmf;                 /* Task Management Function */
+        u8 reserved1;           /* byte 3 Reserved */
+        u32 it_nexus;           /* SCSI I-T Nexus */
+        u8 lun_id[8];           /* LUN ID for TMF request */
+        struct vals32 Tag;      /* cciss tag associated w/ request */
+        struct vals32 abort_tag;/* cciss tag of SCSI cmd or task to abort */
+        u64 error_ptr;          /* Error Pointer */
+        u32 error_len;          /* Error Length */
+};
+
 /* Configuration Table Structure */
 struct HostWrite {
         u32 TransportRequest;