[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3

NPIV support is added to the driver.  It utilizes the interfaces of
the fc transport for the creation and deletion of vports. Within the
driver, a new Scsi_Host is created for each NPIV instance, and is
paired with a new instance of a FC port.  This allows N FC Port
elements to share a single Adapter.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 96 insertions, 29 deletions

diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h
index 430416805e85..7fab93d34367 100644
--- a/drivers/scsi/lpfc/lpfc_hw.h
+++ b/drivers/scsi/lpfc/lpfc_hw.h
@@ -64,6 +64,7 @@
 #define SLI3_IOCB_CMD_SIZE      128
 #define SLI3_IOCB_RSP_SIZE      64
 
+
 /* Common Transport structures and definitions */
 
 union CtRevisionId {
@@ -84,6 +85,9 @@ union CtCommandResponse {
         uint32_t word;
 };
 
+#define FC4_FEATURE_INIT 0x2
+#define FC4_FEATURE_TARGET 0x1
+
 struct lpfc_sli_ct_request {
         /* Structure is in Big Endian format */
         union CtRevisionId RevisionId;
@@ -126,20 +130,6 @@ struct lpfc_sli_ct_request {
 
                         uint32_t rsvd[7];
                 } rft;
-                struct rff {
-                        uint32_t PortId;
-                        uint8_t reserved[2];
-#ifdef __BIG_ENDIAN_BITFIELD
-                        uint8_t feature_res:6;
-                        uint8_t feature_init:1;
-                        uint8_t feature_tgt:1;
-#else  /*  __LITTLE_ENDIAN_BITFIELD */
-                        uint8_t feature_tgt:1;
-                        uint8_t feature_init:1;
-                        uint8_t feature_res:6;
-#endif
-                        uint8_t type_code;     /* type=8 for FCP */
-                } rff;
                 struct rnn {
                         uint32_t PortId;        /* For RNN_ID requests */
                         uint8_t wwnn[8];
@@ -149,15 +139,42 @@ struct lpfc_sli_ct_request {
                         uint8_t len;
                         uint8_t symbname[255];
                 } rsnn;
+                struct rspn {   /* For RSPN_ID requests */
+                        uint32_t PortId;
+                        uint8_t len;
+                        uint8_t symbname[255];
+                } rspn;
+                struct gff {
+                        uint32_t PortId;
+                } gff;
+                struct gff_acc {
+                        uint8_t fbits[128];
+                } gff_acc;
+#define FCP_TYPE_FEATURE_OFFSET 4
+                struct rff {
+                        uint32_t PortId;
+                        uint8_t reserved[2];
+                        uint8_t fbits;
+                        uint8_t type_code;     /* type=8 for FCP */
+                } rff;
         } un;
 };
 
 #define  SLI_CT_REVISION        1
-#define  GID_REQUEST_SZ         (sizeof(struct lpfc_sli_ct_request) - 260)
-#define  RFT_REQUEST_SZ         (sizeof(struct lpfc_sli_ct_request) - 228)
-#define  RFF_REQUEST_SZ         (sizeof(struct lpfc_sli_ct_request) - 235)
-#define  RNN_REQUEST_SZ         (sizeof(struct lpfc_sli_ct_request) - 252)
-#define  RSNN_REQUEST_SZ        (sizeof(struct lpfc_sli_ct_request))
+#define  GID_REQUEST_SZ   (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct gid))
+#define  GFF_REQUEST_SZ   (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct gff))
+#define  RFT_REQUEST_SZ   (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct rft))
+#define  RFF_REQUEST_SZ   (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct rff))
+#define  RNN_REQUEST_SZ   (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct rnn))
+#define  RSNN_REQUEST_SZ  (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct rsnn))
+#define  RSPN_REQUEST_SZ  (offsetof(struct lpfc_sli_ct_request, un) + \
+                           sizeof(struct rspn))
 
 /*
  * FsType Definitions
@@ -232,6 +249,7 @@ struct lpfc_sli_ct_request {
 #define  SLI_CTNS_GFT_ID      0x0117
 #define  SLI_CTNS_GSPN_ID     0x0118
 #define  SLI_CTNS_GPT_ID      0x011A
+#define  SLI_CTNS_GFF_ID      0x011F
 #define  SLI_CTNS_GID_PN      0x0121
 #define  SLI_CTNS_GID_NN      0x0131
 #define  SLI_CTNS_GIP_NN      0x0135
@@ -245,9 +263,9 @@ struct lpfc_sli_ct_request {
 #define  SLI_CTNS_RNN_ID      0x0213
 #define  SLI_CTNS_RCS_ID      0x0214
 #define  SLI_CTNS_RFT_ID      0x0217
-#define  SLI_CTNS_RFF_ID      0x021F
 #define  SLI_CTNS_RSPN_ID     0x0218
 #define  SLI_CTNS_RPT_ID      0x021A
+#define  SLI_CTNS_RFF_ID      0x021F
 #define  SLI_CTNS_RIP_NN      0x0235
 #define  SLI_CTNS_RIPA_NN     0x0236
 #define  SLI_CTNS_RSNN_NN     0x0239
@@ -316,8 +334,9 @@ struct csp {
         uint8_t bbCreditlsb;    /* FC Word 0, byte 3 */
 
 #ifdef __BIG_ENDIAN_BITFIELD
-        uint16_t increasingOffset:1;    /* FC Word 1, bit 31 */
-        uint16_t response_multiple_Nport:1;     /* FC Word 1, bit 29 */
+        uint16_t request_multiple_Nport:1;      /* FC Word 1, bit 31 */
+        uint16_t randomOffset:1;        /* FC Word 1, bit 30 */
+        uint16_t response_multiple_NPort:1;     /* FC Word 1, bit 29 */
         uint16_t fPort:1;       /* FC Word 1, bit 28 */
         uint16_t altBbCredit:1; /* FC Word 1, bit 27 */
         uint16_t edtovResolution:1;     /* FC Word 1, bit 26 */
@@ -336,9 +355,9 @@ struct csp {
         uint16_t edtovResolution:1;     /* FC Word 1, bit 26 */
         uint16_t altBbCredit:1; /* FC Word 1, bit 27 */
         uint16_t fPort:1;       /* FC Word 1, bit 28 */
-        uint16_t word1Reserved2:1;      /* FC Word 1, bit 29 */
+        uint16_t response_multiple_NPort:1;     /* FC Word 1, bit 29 */
         uint16_t randomOffset:1;        /* FC Word 1, bit 30 */
-        uint16_t increasingOffset:1;    /* FC Word 1, bit 31 */
+        uint16_t request_multiple_Nport:1;      /* FC Word 1, bit 31 */
 
         uint16_t payloadlength:1;       /* FC Word 1, bit 16 */
         uint16_t contIncSeqCnt:1;       /* FC Word 1, bit 17 */
@@ -1268,6 +1287,10 @@ typedef struct {		/* FireFly BIU registers */
 #define MBX_READ_RPI64      0x8F
 #define MBX_REG_LOGIN64     0x93
 #define MBX_READ_LA64       0x95
+#define MBX_REG_VPI         0x96
+#define MBX_UNREG_VPI       0x97
+#define MBX_REG_VNPID       0x96
+#define MBX_UNREG_VNPID     0x97
 
 #define MBX_FLASH_WR_ULA    0x98
 #define MBX_SET_DEBUG       0x99
@@ -1570,7 +1593,7 @@ typedef struct {
 #define FLAGS_TOPOLOGY_MODE_PT_PT    0x02 /* Attempt pt-pt only */
 #define FLAGS_TOPOLOGY_MODE_LOOP     0x04 /* Attempt loop only */
 #define FLAGS_TOPOLOGY_MODE_PT_LOOP  0x06 /* Attempt pt-pt then loop */
-#define FLAGS_UNREG_LOGIN_ALL        0x08 /* UNREG_LOGIN all on link down */
+#define FLAGS_UNREG_LOGIN_ALL        0x08 /* UNREG_LOGIN all on link down */
 #define FLAGS_LIRP_LILP              0x80 /* LIRP / LILP is disabled */
 
 #define FLAGS_TOPOLOGY_FAILOVER      0x0400     /* Bit 10 */
@@ -2086,6 +2109,45 @@ typedef struct {
 #endif
 } UNREG_LOGIN_VAR;
 
+/* Structure for MB Command REG_VPI (0x96) */
+typedef struct {
+#ifdef __BIG_ENDIAN_BITFIELD
+        uint32_t rsvd1;
+        uint32_t rsvd2:8;
+        uint32_t sid:24;
+        uint32_t rsvd3;
+        uint32_t rsvd4;
+        uint32_t rsvd5;
+        uint16_t rsvd6;
+        uint16_t vpi;
+#else   /*  __LITTLE_ENDIAN */
+        uint32_t rsvd1;
+        uint32_t sid:24;
+        uint32_t rsvd2:8;
+        uint32_t rsvd3;
+        uint32_t rsvd4;
+        uint32_t rsvd5;
+        uint16_t vpi;
+        uint16_t rsvd6;
+#endif
+} REG_VPI_VAR;
+
+/* Structure for MB Command UNREG_VPI (0x97) */
+typedef struct {
+        uint32_t rsvd1;
+        uint32_t rsvd2;
+        uint32_t rsvd3;
+        uint32_t rsvd4;
+        uint32_t rsvd5;
+#ifdef __BIG_ENDIAN_BITFIELD
+        uint16_t rsvd6;
+        uint16_t vpi;
+#else   /*  __LITTLE_ENDIAN */
+        uint16_t vpi;
+        uint16_t rsvd6;
+#endif
+} UNREG_VPI_VAR;
+
 /* Structure for MB Command UNREG_D_ID (0x23) */
 
 typedef struct {
@@ -2549,8 +2611,8 @@ typedef union {
         LOAD_SM_VAR varLdSM;            /* cmd =  1 (LOAD_SM)        */
         READ_NV_VAR varRDnvp;           /* cmd =  2 (READ_NVPARMS)   */
         WRITE_NV_VAR varWTnvp;          /* cmd =  3 (WRITE_NVPARMS)  */
-        BIU_DIAG_VAR varBIUdiag;        /* cmd =  4 (RUN_BIU_DIAG)   */
-        INIT_LINK_VAR varInitLnk;       /* cmd =  5 (INIT_LINK)      */
+        BIU_DIAG_VAR varBIUdiag;        /* cmd =  4 (RUN_BIU_DIAG)   */
+        INIT_LINK_VAR varInitLnk;       /* cmd =  5 (INIT_LINK)      */
         DOWN_LINK_VAR varDwnLnk;        /* cmd =  6 (DOWN_LINK)      */
         CONFIG_LINK varCfgLnk;          /* cmd =  7 (CONFIG_LINK)    */
         PART_SLIM_VAR varSlim;          /* cmd =  8 (PART_SLIM)      */
@@ -2575,6 +2637,8 @@ typedef union {
                                          */
         struct config_hbq_var varCfgHbq;/* cmd = 0x7c (CONFIG_HBQ)  */
         CONFIG_PORT_VAR varCfgPort;     /* cmd = 0x88 (CONFIG_PORT)  */
+        REG_VPI_VAR varRegVpi;          /* cmd = 0x96 (REG_VPI) */
+        UNREG_VPI_VAR varUnregVpi;      /* cmd = 0x97 (UNREG_VPI) */
 } MAILVARIANTS;
 
 /*
@@ -2614,7 +2678,6 @@ typedef union {
         struct sli3_pgp  s3_pgp;
 } SLI_VAR;
 
-
 typedef struct {
 #ifdef __BIG_ENDIAN_BITFIELD
         uint16_t mbxStatus;
@@ -2935,6 +2998,8 @@ struct rcv_sli3 {
         struct ulp_bde64 bde2;
 };
 
+
+
 typedef struct _IOCB {  /* IOCB structure */
         union {
                 GENERIC_RSP grsp;       /* Generic response */
@@ -3011,6 +3076,7 @@ typedef struct _IOCB {	/* IOCB structure */
         uint32_t ulpXS:1;
         uint32_t ulpTimeout:8;
 #endif
+
         union {
                 struct rcv_sli3 rcvsli3; /* words 8 - 15 */
                 uint32_t sli3Words[24]; /* 96 extra bytes for SLI-3 */
@@ -3024,6 +3090,7 @@ typedef struct _IOCB {	/* IOCB structure */
 #define PARM_UNUSED        0    /* PU field (Word 4) not used */
 #define PARM_REL_OFF       1    /* PU field (Word 4) = R. O. */
 #define PARM_READ_CHECK    2    /* PU field (Word 4) = Data Transfer Length */
+#define PARM_NPIV_DID      3
 #define CLASS1             0    /* Class 1 */
 #define CLASS2             1    /* Class 2 */
 #define CLASS3             2    /* Class 3 */
@@ -3044,7 +3111,7 @@ typedef struct _IOCB {	/* IOCB structure */
 #define IOSTAT_RSVD2           0xC
 #define IOSTAT_RSVD3           0xD
 #define IOSTAT_RSVD4           0xE
-#define IOSTAT_RSVD5           0xF
+#define IOSTAT_NEED_BUFFER     0xF
 #define IOSTAT_DRIVER_REJECT   0x10   /* ulpStatus  - Driver defined */
 #define IOSTAT_DEFAULT         0xF    /* Same as rsvd5 for now */
 #define IOSTAT_CNT             0x11