drivers/fc4/socal.h

   1 /* socal.h: Definitions for Sparc SUNW,socal (SOC+) Fibre Channel Sbus driver.
   2  *
   3  * Copyright (C) 1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
   4  */
   5
   6 #ifndef __SOCAL_H
   7 #define __SOCAL_H
   8
   9 #include "fc.h"
  10 #include "fcp.h"
  11 #include "fcp_impl.h"
  12
  13 /* Hardware register offsets and constants first {{{ */
  14 #define CFG     0x00UL
  15 #define SAE     0x04UL
  16 #define CMD     0x08UL
  17 #define IMASK   0x0cUL
  18 #define REQP    0x10UL
  19 #define RESP    0x14UL
  20
  21 /* Config Register */
  22 #define SOCAL_CFG_EXT_RAM_BANK_MASK     0x07000000
  23 #define SOCAL_CFG_EEPROM_BANK_MASK      0x00030000
  24 #define SOCAL_CFG_BURST64_MASK          0x00000700
  25 #define SOCAL_CFG_SBUS_PARITY_TEST      0x00000020
  26 #define SOCAL_CFG_SBUS_PARITY_CHECK     0x00000010
  27 #define SOCAL_CFG_SBUS_ENHANCED         0x00000008
  28 #define SOCAL_CFG_BURST_MASK            0x00000007
  29 /* Bursts */
  30 #define SOCAL_CFG_BURST_4               0x00000000
  31 #define SOCAL_CFG_BURST_8               0x00000003
  32 #define SOCAL_CFG_BURST_16              0x00000004
  33 #define SOCAL_CFG_BURST_32              0x00000005
  34 #define SOCAL_CFG_BURST_64              0x00000006
  35 #define SOCAL_CFG_BURST_128             0x00000007
  36
  37 /* Slave Access Error Register */
  38 #define SOCAL_SAE_ALIGNMENT             0x00000004
  39 #define SOCAL_SAE_UNSUPPORTED           0x00000002
  40 #define SOCAL_SAE_PARITY                0x00000001
  41
  42 /* Command & Status Register */
  43 #define SOCAL_CMD_RSP_QALL              0x000f0000
  44 #define SOCAL_CMD_RSP_Q0                0x00010000
  45 #define SOCAL_CMD_RSP_Q1                0x00020000
  46 #define SOCAL_CMD_RSP_Q2                0x00040000
  47 #define SOCAL_CMD_RSP_Q3                0x00080000
  48 #define SOCAL_CMD_REQ_QALL              0x00000f00
  49 #define SOCAL_CMD_REQ_Q0                0x00000100
  50 #define SOCAL_CMD_REQ_Q1                0x00000200
  51 #define SOCAL_CMD_REQ_Q2                0x00000400
  52 #define SOCAL_CMD_REQ_Q3                0x00000800
  53 #define SOCAL_CMD_SAE                   0x00000080
  54 #define SOCAL_CMD_INTR_PENDING          0x00000008
  55 #define SOCAL_CMD_NON_QUEUED            0x00000004
  56 #define SOCAL_CMD_IDLE                  0x00000002
  57 #define SOCAL_CMD_SOFT_RESET            0x00000001
  58
  59 /* Interrupt Mask Register */
  60 #define SOCAL_IMASK_RSP_QALL            0x000f0000
  61 #define SOCAL_IMASK_RSP_Q0              0x00010000
  62 #define SOCAL_IMASK_RSP_Q1              0x00020000
  63 #define SOCAL_IMASK_RSP_Q2              0x00040000
  64 #define SOCAL_IMASK_RSP_Q3              0x00080000
  65 #define SOCAL_IMASK_REQ_QALL            0x00000f00
  66 #define SOCAL_IMASK_REQ_Q0              0x00000100
  67 #define SOCAL_IMASK_REQ_Q1              0x00000200
  68 #define SOCAL_IMASK_REQ_Q2              0x00000400
  69 #define SOCAL_IMASK_REQ_Q3              0x00000800
  70 #define SOCAL_IMASK_SAE                 0x00000080
  71 #define SOCAL_IMASK_NON_QUEUED          0x00000004
  72
  73 #define SOCAL_INTR(s, cmd) \
  74         (((cmd & SOCAL_CMD_RSP_QALL) | ((~cmd) & SOCAL_CMD_REQ_QALL)) \
  75          & s->imask)
  76
  77 #define SOCAL_SETIMASK(s, i) \
  78 do {    (s)->imask = (i); \
  79         sbus_writel((i), (s)->regs + IMASK); \
  80 } while (0)
  81
  82 #define SOCAL_MAX_EXCHANGES             1024
  83
  84 /* XRAM
  85  *
  86  * This is a 64KB register area.
  87  * From the documentation, it seems like it is finally able to cope
  88  * at least with 1,2,4 byte accesses for read and 2,4 byte accesses for write.
  89  */
  90
  91 /* Circular Queue */
  92
  93 #define SOCAL_CQ_REQ_OFFSET     0x200
  94 #define SOCAL_CQ_RSP_OFFSET     0x220
  95
  96 typedef struct {
  97         u32                     address;
  98         u8                      in;
  99         u8                      out;
 100         u8                      last;
 101         u8                      seqno;
 102 } socal_hw_cq;
 103
 104 #define SOCAL_PORT_A    0x0000  /* From/To Port A */
 105 #define SOCAL_PORT_B    0x0001  /* From/To Port A */
 106 #define SOCAL_FC_HDR    0x0002  /* Contains FC Header */
 107 #define SOCAL_NORSP     0x0004  /* Don't generate response nor interrupt */
 108 #define SOCAL_NOINT     0x0008  /* Generate response but not interrupt */
 109 #define SOCAL_XFERRDY   0x0010  /* Generate XFERRDY */
 110 #define SOCAL_IGNOREPARAM 0x0020 /* Ignore PARAM field in the FC header */
 111 #define SOCAL_COMPLETE  0x0040  /* Command completed */
 112 #define SOCAL_UNSOLICITED 0x0080 /* For request this is the packet to establish unsolicited pools, */
 113                                 /* for rsp this is unsolicited packet */
 114 #define SOCAL_STATUS    0x0100  /* State change (on/off line) */
 115 #define SOCAL_RSP_HDR   0x0200  /* Return frame header in any case */
 116
 117 typedef struct {
 118         u32                     token;
 119         u16                     flags;
 120         u8                      class;
 121         u8                      segcnt;
 122         u32                     bytecnt;
 123 } socal_hdr;
 124
 125 typedef struct {
 126         u32                     base;
 127         u32                     count;
 128 } socal_data;
 129
 130 #define SOCAL_CQTYPE_NOP        0x00
 131 #define SOCAL_CQTYPE_OUTBOUND   0x01
 132 #define SOCAL_CQTYPE_INBOUND    0x02
 133 #define SOCAL_CQTYPE_SIMPLE     0x03
 134 #define SOCAL_CQTYPE_IO_WRITE   0x04
 135 #define SOCAL_CQTYPE_IO_READ    0x05
 136 #define SOCAL_CQTYPE_UNSOLICITED 0x06
 137 #define SOCAL_CQTYPE_BYPASS_DEV 0x06
 138 #define SOCAL_CQTYPE_DIAG       0x07
 139 #define SOCAL_CQTYPE_OFFLINE    0x08
 140 #define SOCAL_CQTYPE_ADD_POOL   0x09
 141 #define SOCAL_CQTYPE_DELETE_POOL 0x0a
 142 #define SOCAL_CQTYPE_ADD_BUFFER 0x0b
 143 #define SOCAL_CQTYPE_ADD_POOL_BUFFER 0x0c
 144 #define SOCAL_CQTYPE_REQUEST_ABORT 0x0d
 145 #define SOCAL_CQTYPE_REQUEST_LIP 0x0e
 146 #define SOCAL_CQTYPE_REPORT_MAP 0x0f
 147 #define SOCAL_CQTYPE_RESPONSE   0x10
 148 #define SOCAL_CQTYPE_INLINE     0x20
 149
 150 #define SOCAL_CQFLAGS_CONT      0x01
 151 #define SOCAL_CQFLAGS_FULL      0x02
 152 #define SOCAL_CQFLAGS_BADHDR    0x04
 153 #define SOCAL_CQFLAGS_BADPKT    0x08
 154
 155 typedef struct {
 156         socal_hdr               shdr;
 157         socal_data              data[3];
 158         fc_hdr                  fchdr;
 159         u8                      count;
 160         u8                      type;
 161         u8                      flags;
 162         u8                      seqno;
 163 } socal_req;
 164
 165 #define SOCAL_OK                0
 166 #define SOCAL_P_RJT             2
 167 #define SOCAL_F_RJT             3
 168 #define SOCAL_P_BSY             4
 169 #define SOCAL_F_BSY             5
 170 #define SOCAL_ONLINE            0x10
 171 #define SOCAL_OFFLINE           0x11
 172 #define SOCAL_TIMEOUT           0x12
 173 #define SOCAL_OVERRUN           0x13
 174 #define SOCAL_ONLINE_LOOP       0x14
 175 #define SOCAL_OLD_PORT          0x15
 176 #define SOCAL_AL_PORT           0x16
 177 #define SOCAL_UNKOWN_CQ_TYPE    0x20
 178 #define SOCAL_BAD_SEG_CNT       0x21
 179 #define SOCAL_MAX_XCHG_EXCEEDED 0x22
 180 #define SOCAL_BAD_XID           0x23
 181 #define SOCAL_XCHG_BUSY         0x24
 182 #define SOCAL_BAD_POOL_ID       0x25
 183 #define SOCAL_INSUFFICIENT_CQES 0x26
 184 #define SOCAL_ALLOC_FAIL        0x27
 185 #define SOCAL_BAD_SID           0x28
 186 #define SOCAL_NO_SEG_INIT       0x29
 187 #define SOCAL_BAD_DID           0x2a
 188 #define SOCAL_ABORTED           0x30
 189 #define SOCAL_ABORT_FAILED      0x31
 190
 191 typedef struct {
 192         socal_hdr               shdr;
 193         u32                     status;
 194         socal_data              data;
 195         u8                      xxx1[10];
 196         u16                     ncmds;
 197         fc_hdr                  fchdr;
 198         u8                      count;
 199         u8                      type;
 200         u8                      flags;
 201         u8                      seqno;
 202 } socal_rsp;
 203
 204 typedef struct {
 205         socal_hdr               shdr;
 206         u8                      xxx1[48];
 207         u8                      count;
 208         u8                      type;
 209         u8                      flags;
 210         u8                      seqno;
 211 } socal_cmdonly;
 212
 213 #define SOCAL_DIAG_NOP          0x00
 214 #define SOCAL_DIAG_INT_LOOP     0x01
 215 #define SOCAL_DIAG_EXT_LOOP     0x02
 216 #define SOCAL_DIAG_REM_LOOP     0x03
 217 #define SOCAL_DIAG_XRAM_TEST    0x04
 218 #define SOCAL_DIAG_SOC_TEST     0x05
 219 #define SOCAL_DIAG_HCB_TEST     0x06
 220 #define SOCAL_DIAG_SOCLB_TEST   0x07
 221 #define SOCAL_DIAG_SRDSLB_TEST  0x08
 222 #define SOCAL_DIAG_EXTOE_TEST   0x09
 223
 224 typedef struct {
 225         socal_hdr               shdr;
 226         u32                     cmd;
 227         u8                      xxx1[44];
 228         u8                      count;
 229         u8                      type;
 230         u8                      flags;
 231         u8                      seqno;
 232 } socal_diag_req;
 233
 234 #define SOCAL_POOL_MASK_RCTL    0x800000
 235 #define SOCAL_POOL_MASK_DID     0x700000
 236 #define SOCAL_POOL_MASK_SID     0x070000
 237 #define SOCAL_POOL_MASK_TYPE    0x008000
 238 #define SOCAL_POOL_MASK_F_CTL   0x007000
 239 #define SOCAL_POOL_MASK_SEQ_ID  0x000800
 240 #define SOCAL_POOL_MASK_D_CTL   0x000400
 241 #define SOCAL_POOL_MASK_SEQ_CNT 0x000300
 242 #define SOCAL_POOL_MASK_OX_ID   0x0000f0
 243 #define SOCAL_POOL_MASK_PARAM   0x00000f
 244
 245 typedef struct {
 246         socal_hdr               shdr;
 247         u32                     pool_id;
 248         u32                     header_mask;
 249         u32                     buf_size;
 250         u32                     entries;
 251         u8                      xxx1[8];
 252         fc_hdr                  fchdr;
 253         u8                      count;
 254         u8                      type;
 255         u8                      flags;
 256         u8                      seqno;
 257 } socal_pool_req;
 258
 259 /* }}} */
 260
 261 /* Now our software structures and constants we use to drive the beast {{{ */
 262
 263 #define SOCAL_CQ_REQ0_SIZE      4
 264 #define SOCAL_CQ_REQ1_SIZE      256
 265 #define SOCAL_CQ_RSP0_SIZE      8
 266 #define SOCAL_CQ_RSP1_SIZE      4
 267 #define SOCAL_CQ_RSP2_SIZE      4
 268
 269 #define SOCAL_SOLICITED_RSP_Q   0
 270 #define SOCAL_SOLICITED_BAD_RSP_Q 1
 271 #define SOCAL_UNSOLICITED_RSP_Q 2
 272
 273 struct socal;
 274
 275 typedef struct {
 276         /* This must come first */
 277         fc_channel              fc;
 278         struct socal            *s;
 279         u16                     flags;
 280         u16                     mask;
 281 } socal_port;
 282
 283 typedef struct {
 284         socal_hw_cq             __iomem *hw_cq; /* Related XRAM cq */
 285         socal_req               *pool;
 286         u8                      in;
 287         u8                      out;
 288         u8                      last;
 289         u8                      seqno;
 290 } socal_cq;
 291
 292 struct socal {
 293         spinlock_t              lock;
 294         socal_port              port[2]; /* Every SOCAL has one or two FC ports */
 295         socal_cq                req[4]; /* Request CQs */
 296         socal_cq                rsp[4]; /* Response CQs */
 297         int                     socal_no;
 298         void __iomem            *regs;
 299         void __iomem            *xram;
 300         void __iomem            *eeprom;
 301         fc_wwn                  wwn;
 302         u32                     imask;  /* Our copy of regs->imask */
 303         u32                     cfg;    /* Our copy of regs->cfg */
 304         char                    serv_params[80];
 305         struct socal            *next;
 306         int                     curr_port; /* Which port will have priority to fcp_queue_empty */
 307
 308         socal_req *             req_cpu;
 309         u32                     req_dvma;
 310 };
 311
 312 /* }}} */
 313
 314 #endif /* !(__SOCAL_H) */