drivers/fc4/socal.c

   1 /* socal.c: Sparc SUNW,socal (SOC+) Fibre Channel Sbus adapter support.
   2  *
   3  * Copyright (C) 1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
   4  *
   5  * Sources:
   6  *      Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994
   7  *      dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995
   8  *      SOC+ Programming Guide 0.1
   9  *      Fibre Channel Arbitrated Loop (FC-AL), dpANS rev. 4.5, 1995
  10  *
  11  * Supported hardware:
  12  *      On-board SOC+ adapters of Ultra Enterprise servers and sun4d.
  13  */
  14
  15 static char *version =
  16         "socal.c: SOC+ driver v1.1 9/Feb/99 Jakub Jelinek (jj@ultra.linux.cz)\n";
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/sched.h>
  21 #include <linux/types.h>
  22 #include <linux/fcntl.h>
  23 #include <linux/interrupt.h>
  24 #include <linux/ptrace.h>
  25 #include <linux/ioport.h>
  26 #include <linux/in.h>
  27 #include <linux/malloc.h>
  28 #include <linux/string.h>
  29 #include <linux/init.h>
  30 #include <asm/system.h>
  31 #include <asm/bitops.h>
  32 #include <asm/io.h>
  33 #include <asm/dma.h>
  34 #include <linux/errno.h>
  35 #include <asm/byteorder.h>
  36
  37 #include <asm/openprom.h>
  38 #include <asm/oplib.h>
  39 #include <asm/auxio.h>
  40 #include <asm/system.h>
  41 #include <asm/pgtable.h>
  42 #include <asm/irq.h>
  43
  44 /* #define SOCALDEBUG */
  45 /* #define HAVE_SOCAL_UCODE */
  46 /* #define USE_64BIT_MODE */
  47
  48 #include "fcp_impl.h"
  49 #include "socal.h"
  50 #ifdef HAVE_SOCAL_UCODE
  51 #include "socal_asm.h"
  52 #endif
  53
  54 #define socal_printk printk ("socal%d: ", s->socal_no); printk
  55
  56 #ifdef SOCALDEBUG
  57 #define SOD(x)  socal_printk x;
  58 #else
  59 #define SOD(x)
  60 #endif
  61
  62 #define for_each_socal(s) for (s = socals; s; s = s->next)
  63 struct socal *socals = NULL;
  64
  65 /* I don't think our VIS mem* routines will behave well
  66    in IO... */
  67 static void socal_memcpy(void *d, void *s, int size)
  68 {
  69         u32 *dp = (u32 *)d, *sp = (u32 *)s;
  70         while (size) {
  71                 *dp++ = *sp++;
  72                 size -= sizeof(u32);
  73         }
  74 }
  75
  76 #ifdef HAVE_SOCAL_UCODE
  77 static void socal_bzero(void *d, int size)
  78 {
  79         u32 *dp = (u32 *)d;
  80         while (size) {
  81                 *dp++ = 0;
  82                 size -= sizeof(u32);
  83         }
  84 }
  85 #endif
  86
  87 static inline void socal_disable(struct socal *s)
  88 {
  89         s->regs->imask = 0; s->regs->cmd = SOCAL_CMD_SOFT_RESET;
  90 }
  91
  92 static inline void socal_enable(struct socal *s)
  93 {
  94         SOD(("enable %08x\n", s->cfg))
  95         s->regs->sae = 0; s->regs->cfg = s->cfg;
  96         s->regs->cmd = SOCAL_CMD_RSP_QALL;
  97         SOCAL_SETIMASK(s, SOCAL_IMASK_RSP_QALL | SOCAL_IMASK_SAE);
  98         SOD(("imask %08x %08x\n", s->imask, s->regs->imask));
  99 }
 100
 101 static void socal_reset(fc_channel *fc)
 102 {
 103         socal_port *port = (socal_port *)fc;
 104         struct socal *s = port->s;
 105
 106         /* FIXME */
 107         socal_disable(s);
 108         s->req[0].seqno = 1;
 109         s->req[1].seqno = 1;
 110         s->rsp[0].seqno = 1;
 111         s->rsp[1].seqno = 1;
 112         s->req[0].in = 0;
 113         s->req[1].in = 0;
 114         s->rsp[0].in = 0;
 115         s->rsp[1].in = 0;
 116         s->req[0].out = 0;
 117         s->req[1].out = 0;
 118         s->rsp[0].out = 0;
 119         s->rsp[1].out = 0;
 120
 121         /* FIXME */
 122         socal_enable(s);
 123 }
 124
 125 static void inline socal_solicited (struct socal *s, int qno)
 126 {
 127         fc_hdr fchdr;
 128         socal_rsp *hwrsp;
 129         socal_cq *sw_cq;
 130         int token;
 131         int status;
 132         fc_channel *fc;
 133
 134         sw_cq = &s->rsp[qno];
 135
 136         if (sw_cq->pool == NULL) {
 137                 SOD(("address %08x xram %p\n", sw_cq->hw_cq->address, s->xram))
 138                 sw_cq->pool =
 139                         (socal_req *)(s->xram + (sw_cq->hw_cq->address & 0xfffe));
 140         }
 141         /* Finally an improvement against old SOC :) */
 142         sw_cq->in = s->regs->respr[qno];
 143         SOD (("socal_solicited, %d packets arrived\n", (sw_cq->in - sw_cq->out) & sw_cq->last))
 144         for (;;) {
 145                 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
 146                 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
 147
 148 #if defined(SOCALDEBUG) && 0
 149                 {
 150                 u32 *u = (u32 *)hwrsp;
 151                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 152                 u += 8;
 153                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 154                 u = (u32 *)s->xram;
 155                 while (u < ((u32 *)s->regs)) {
 156                         if (u[0] == 0x00003000 || u[0] == 0x00003801) {
 157                         SOD(("Found at %04lx\n", (unsigned long)u - (unsigned long)s->xram))
 158                         SOD(("  %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 159                         u += 8;
 160                         SOD(("  %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 161                         u -= 8;
 162                         }
 163                         u++;
 164                 }
 165                 }
 166 #endif
 167
 168                 token = hwrsp->shdr.token;
 169                 status = hwrsp->status;
 170                 fc = (fc_channel *)(&s->port[(token >> 11) & 1]);
 171
 172                 SOD(("Solicited token %08x status %08x\n", token, status))
 173                 if (status == SOCAL_OK)
 174                         fcp_receive_solicited(fc, token >> 12, token & ((1 << 11) - 1), FC_STATUS_OK, NULL);
 175                 else {
 176                         socal_memcpy(&fchdr, &hwrsp->fchdr, sizeof(fchdr));
 177                         /* We have intentionally defined FC_STATUS_* constants to match SOCAL_* constants, otherwise
 178                            we'd have to translate status */
 179                         fcp_receive_solicited(fc, token >> 12, token & ((1 << 11) - 1), status, &fchdr);
 180                 }
 181
 182                 if (++sw_cq->out > sw_cq->last) {
 183                         sw_cq->seqno++;
 184                         sw_cq->out = 0;
 185                 }
 186
 187                 if (sw_cq->out == sw_cq->in) {
 188                         sw_cq->in = s->regs->respr[qno];
 189                         if (sw_cq->out == sw_cq->in) {
 190                                 /* Tell the hardware about it */
 191                                 s->regs->cmd = (sw_cq->out << 24) | (SOCAL_CMD_RSP_QALL & ~(SOCAL_CMD_RSP_Q0 << qno));
 192                                 /* Read it, so that we're sure it has been updated */
 193                                 s->regs->cmd;
 194                                 sw_cq->in = s->regs->respr[qno];
 195                                 if (sw_cq->out == sw_cq->in)
 196                                         break;
 197                         }
 198                 }
 199         }
 200 }
 201
 202 static void inline socal_request (struct socal *s, u32 cmd)
 203 {
 204         SOCAL_SETIMASK(s, s->imask & ~(cmd & SOCAL_CMD_REQ_QALL));
 205         SOD(("imask %08x %08x\n", s->imask, s->regs->imask));
 206
 207         SOD(("Queues available %08x OUT %X\n", cmd, s->regs->reqpr[0]))
 208         if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) {
 209                 fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port]));
 210                 if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out))
 211                         fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
 212         } else
 213                 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
 214         if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE)
 215                 s->curr_port ^= 1;
 216 }
 217
 218 static void inline socal_unsolicited (struct socal *s, int qno)
 219 {
 220         socal_rsp *hwrsp, *hwrspc;
 221         socal_cq *sw_cq;
 222         int count;
 223         int status;
 224         int flags;
 225         fc_channel *fc;
 226
 227         sw_cq = &s->rsp[qno];
 228         if (sw_cq->pool == NULL) {
 229                 SOD(("address %08x xram %p\n", sw_cq->hw_cq->address, s->xram))
 230                 sw_cq->pool =
 231                         (socal_req *)(s->xram + (sw_cq->hw_cq->address & 0xfffe));
 232         }
 233
 234         sw_cq->in = s->regs->respr[qno];
 235         SOD (("socal_unsolicited, %d packets arrived, in %d\n", (sw_cq->in - sw_cq->out) & sw_cq->last, sw_cq->in))
 236         while (sw_cq->in != sw_cq->out) {
 237                 /* ...real work per entry here... */
 238                 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
 239                 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
 240
 241 #if defined(SOCALDEBUG) && 0
 242                 {
 243                 u32 *u = (u32 *)hwrsp;
 244                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 245                 u += 8;
 246                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n", u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 247                 }
 248 #endif
 249
 250                 hwrspc = NULL;
 251                 flags = hwrsp->shdr.flags;
 252                 count = hwrsp->count;
 253                 fc = (fc_channel *)&s->port[flags & SOCAL_PORT_B];
 254                 SOD(("FC %08lx\n", (long)fc))
 255
 256                 if (count != 1) {
 257                         /* Ugh, continuation entries */
 258                         u8 in;
 259
 260                         if (count != 2) {
 261                                 printk("%s: Too many continuations entries %d\n", fc->name, count);
 262                                 goto update_out;
 263                         }
 264
 265                         in = sw_cq->in;
 266                         if (in < sw_cq->out) in += sw_cq->last + 1;
 267                         if (in < sw_cq->out + 2) {
 268                                 /* Ask the hardware about it if they haven't arrived yet */
 269                                 s->regs->cmd = (sw_cq->out << 24) | (SOCAL_CMD_RSP_QALL & ~(SOCAL_CMD_RSP_Q0 << qno));
 270                                 /* Read it, so that we're sure it has been updated */
 271                                 s->regs->cmd;
 272                                 sw_cq->in = s->regs->respr[qno];
 273                                 in = sw_cq->in;
 274                                 if (in < sw_cq->out) in += sw_cq->last + 1;
 275                                 if (in < sw_cq->out + 2) /* Nothing came, let us wait */
 276                                         return;
 277                         }
 278                         if (sw_cq->out == sw_cq->last)
 279                                 hwrspc = (socal_rsp *)sw_cq->pool;
 280                         else
 281                                 hwrspc = hwrsp + 1;
 282                 }
 283
 284                 switch (flags & ~SOCAL_PORT_B) {
 285                 case SOCAL_STATUS:
 286                         status = hwrsp->status;
 287                         switch (status) {
 288                         case SOCAL_ONLINE:
 289                                 SOD(("State change to ONLINE\n"));
 290                                 fcp_state_change(fc, FC_STATE_ONLINE);
 291                                 break;
 292                         case SOCAL_ONLINE_LOOP:
 293                                 SOD(("State change to ONLINE_LOOP\n"));
 294                                 fcp_state_change(fc, FC_STATE_ONLINE);
 295                                 break;
 296                         case SOCAL_OFFLINE:
 297                                 SOD(("State change to OFFLINE\n"));
 298                                 fcp_state_change(fc, FC_STATE_OFFLINE);
 299                                 break;
 300                         default:
 301                                 printk ("%s: Unknown STATUS no %d\n", fc->name, status);
 302                                 break;
 303                         }
 304                         break;
 305                 case (SOCAL_UNSOLICITED|SOCAL_FC_HDR):
 306                         {
 307                                 int r_ctl = *((u8 *)&hwrsp->fchdr);
 308                                 unsigned len;
 309                                 char buf[64];
 310
 311                                 if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) {
 312                                         len = hwrsp->shdr.bytecnt;
 313                                         if (len < 4 || !hwrspc)
 314                                                 printk ("%s: Invalid R_CTL %02x continuation entries\n", fc->name, r_ctl);
 315                                         else {
 316                                                 if (len > 60) len = 60;
 317                                                 socal_memcpy (buf, hwrspc, (len + 3) & ~3);
 318                                                 if (*(u32 *)buf == LS_DISPLAY) {
 319                                                         int i;
 320
 321                                                         for (i = 4; i < len; i++)
 322                                                                 if (buf[i] == '\n') buf[i] = ' ';
 323                                                         buf[len] = 0;
 324                                                         printk ("%s message: %s\n", fc->name, buf + 4);
 325                                                 } else {
 326                                                         printk ("%s: Unknown LS_CMD %08x\n", fc->name, *(u32 *)buf);
 327                                                 }
 328                                         }
 329                                 } else
 330                                         printk ("%s: Unsolicited R_CTL %02x not handled\n", fc->name, r_ctl);
 331                         }
 332                         break;
 333                 default:
 334                         printk ("%s: Unexpected flags %08x\n", fc->name, flags);
 335                         break;
 336                 }
 337 update_out:
 338                 if (++sw_cq->out > sw_cq->last) {
 339                         sw_cq->seqno++;
 340                         sw_cq->out = 0;
 341                 }
 342
 343                 if (hwrspc) {
 344                         if (++sw_cq->out > sw_cq->last) {
 345                                 sw_cq->seqno++;
 346                                 sw_cq->out = 0;
 347                         }
 348                 }
 349
 350                 if (sw_cq->out == sw_cq->in) {
 351                         sw_cq->in = s->regs->respr[qno];
 352                         if (sw_cq->out == sw_cq->in) {
 353                                 /* Tell the hardware about it */
 354                                 s->regs->cmd = (sw_cq->out << 24) | (SOCAL_CMD_RSP_QALL & ~(SOCAL_CMD_RSP_Q0 << qno));
 355                                 /* Read it, so that we're sure it has been updated */
 356                                 s->regs->cmd;
 357                                 sw_cq->in = s->regs->respr[qno];
 358                         }
 359                 }
 360         }
 361 }
 362
 363 static void socal_intr(int irq, void *dev_id, struct pt_regs *regs)
 364 {
 365         u32 cmd;
 366         unsigned long flags;
 367         register struct socal *s = (struct socal *)dev_id;
 368
 369         spin_lock_irqsave(&io_request_lock, flags);
 370         cmd = s->regs->cmd;
 371         for (; (cmd = SOCAL_INTR (s, cmd)); cmd = s->regs->cmd) {
 372 #ifdef SOCALDEBUG
 373                 static int cnt = 0;
 374                 if (cnt++ < 50) printk("soc_intr %08x\n", cmd);
 375 #endif
 376                 if (cmd & SOCAL_CMD_RSP_Q2) socal_unsolicited (s, SOCAL_UNSOLICITED_RSP_Q);
 377                 if (cmd & SOCAL_CMD_RSP_Q1) socal_unsolicited (s, SOCAL_SOLICITED_BAD_RSP_Q);
 378                 if (cmd & SOCAL_CMD_RSP_Q0) socal_solicited (s, SOCAL_SOLICITED_RSP_Q);
 379                 if (cmd & SOCAL_CMD_REQ_QALL) socal_request (s, cmd);
 380         }
 381         spin_unlock_irqrestore(&io_request_lock, flags);
 382 }
 383
 384 #define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port))
 385
 386 static int socal_hw_enque (fc_channel *fc, fcp_cmnd *fcmd)
 387 {
 388         socal_port *port = (socal_port *)fc;
 389         struct socal *s = port->s;
 390         int qno;
 391         socal_cq *sw_cq;
 392         int cq_next_in;
 393         socal_req *request;
 394         fc_hdr *fch;
 395         int i;
 396
 397         if (fcmd->proto == TYPE_SCSI_FCP)
 398                 qno = 1;
 399         else
 400                 qno = 0;
 401         SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno))
 402         if (s->imask & (SOCAL_IMASK_REQ_Q0 << qno)) {
 403                 SOD(("EIO %08x\n", s->imask))
 404                 return -EIO;
 405         }
 406         sw_cq = s->req + qno;
 407         cq_next_in = (sw_cq->in + 1) & sw_cq->last;
 408
 409         if (cq_next_in == sw_cq->out
 410                     && cq_next_in == (sw_cq->out = s->regs->reqpr[qno])) {
 411                 SOD(("%d IN %d OUT %d LAST %d\n", qno, sw_cq->in, sw_cq->out, sw_cq->last))
 412                 SOCAL_SETIMASK(s, s->imask | (SOCAL_IMASK_REQ_Q0 << qno));
 413                 SOD(("imask %08x %08x\n", s->imask, s->regs->imask));
 414                 /* If queue is full, just say NO */
 415                 return -EBUSY;
 416         }
 417
 418         request = sw_cq->pool + sw_cq->in;
 419         fch = &request->fchdr;
 420
 421         switch (fcmd->proto) {
 422         case TYPE_SCSI_FCP:
 423                 request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token);
 424                 request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd);
 425                 request->data[0].count = sizeof(fcp_cmd);
 426                 request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size;
 427                 request->data[1].count = fc->rsp_size;
 428                 if (fcmd->data) {
 429                         request->shdr.segcnt = 3;
 430                         i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len;
 431                         request->shdr.bytecnt = i;
 432                         request->data[2].base = fcmd->data;
 433                         request->data[2].count = i;
 434                         request->type = (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ?
 435                                 SOCAL_CQTYPE_IO_WRITE : SOCAL_CQTYPE_IO_READ;
 436                 } else {
 437                         request->shdr.segcnt = 2;
 438                         request->shdr.bytecnt = 0;
 439                         request->data[2].base = 0;
 440                         request->data[2].count = 0;
 441                         request->type = SOCAL_CQTYPE_SIMPLE;
 442                 }
 443                 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
 444                 FILL_FCHDR_SID(fch, fc->sid);
 445                 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
 446                 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
 447                 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
 448                 fch->param = 0;
 449                 request->shdr.flags = port->flags;
 450                 request->shdr.class = fc->posmap ? 3 : 2;
 451                 break;
 452
 453         case PROTO_OFFLINE:
 454                 memset (request, 0, sizeof(*request));
 455                 request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token);
 456                 request->type = SOCAL_CQTYPE_OFFLINE;
 457                 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
 458                 FILL_FCHDR_SID(fch, fc->sid);
 459                 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
 460                 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
 461                 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
 462                 request->shdr.flags = port->flags;
 463                 break;
 464
 465         case PROTO_REPORT_AL_MAP:
 466                 memset (request, 0, sizeof(*request));
 467                 request->shdr.token = TOKEN(PROTO_REPORT_AL_MAP, port->mask, fcmd->token);
 468                 request->type = SOCAL_CQTYPE_REPORT_MAP;
 469                 request->shdr.flags = port->flags;
 470                 request->shdr.segcnt = 1;
 471                 request->shdr.bytecnt = sizeof(fc_al_posmap);
 472                 request->data[0].base = fcmd->cmd;
 473                 request->data[0].count = sizeof(fc_al_posmap);
 474                 break;
 475
 476         default:
 477                 request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token);
 478                 request->shdr.class = fc->posmap ? 3 : 2;
 479                 request->shdr.flags = port->flags;
 480                 memcpy (fch, &fcmd->fch, sizeof(fc_hdr));
 481                 request->data[0].count = fcmd->cmdlen;
 482                 request->data[1].count = fcmd->rsplen;
 483                 request->type = fcmd->class;
 484                 switch (fcmd->class) {
 485                 case FC_CLASS_OUTBOUND:
 486                         request->data[0].base = fcmd->cmd;
 487                         request->data[0].count = fcmd->cmdlen;
 488                         request->type = SOCAL_CQTYPE_OUTBOUND;
 489                         request->shdr.bytecnt = fcmd->cmdlen;
 490                         request->shdr.segcnt = 1;
 491                         break;
 492                 case FC_CLASS_INBOUND:
 493                         request->data[0].base = fcmd->rsp;
 494                         request->data[0].count = fcmd->rsplen;
 495                         request->type = SOCAL_CQTYPE_INBOUND;
 496                         request->shdr.bytecnt = 0;
 497                         request->shdr.segcnt = 1;
 498                         break;
 499                 case FC_CLASS_SIMPLE:
 500                         request->data[0].base = fcmd->cmd;
 501                         request->data[1].base = fcmd->rsp;
 502                         request->data[0].count = fcmd->cmdlen;
 503                         request->data[1].count = fcmd->rsplen;
 504                         request->type = SOCAL_CQTYPE_SIMPLE;
 505                         request->shdr.bytecnt = fcmd->cmdlen;
 506                         request->shdr.segcnt = 2;
 507                         break;
 508                 case FC_CLASS_IO_READ:
 509                 case FC_CLASS_IO_WRITE:
 510                         request->data[0].base = fcmd->cmd;
 511                         request->data[1].base = fcmd->rsp;
 512                         request->data[0].count = fcmd->cmdlen;
 513                         request->data[1].count = fcmd->rsplen;
 514                         request->type = (fcmd->class == FC_CLASS_IO_READ) ? SOCAL_CQTYPE_IO_READ : SOCAL_CQTYPE_IO_WRITE;
 515                         if (fcmd->data) {
 516                                 request->data[2].base = fcmd->data;
 517                                 request->data[2].count = fcmd->datalen;
 518                                 request->shdr.bytecnt = fcmd->datalen;
 519                                 request->shdr.segcnt = 3;
 520                         } else {
 521                                 request->shdr.bytecnt = 0;
 522                                 request->shdr.segcnt = 2;
 523                         }
 524                         break;
 525                 }
 526                 break;
 527         }
 528
 529         request->count = 1;
 530         request->flags = 0;
 531         request->seqno = sw_cq->seqno;
 532
 533         SOD(("queueing token %08x\n", request->shdr.token))
 534
 535         /* And now tell the SOCAL about it */
 536
 537         if (++sw_cq->in > sw_cq->last) {
 538                 sw_cq->in = 0;
 539                 sw_cq->seqno++;
 540         }
 541
 542         SOD(("Putting %08x into cmd\n", SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno)))
 543
 544         s->regs->cmd = SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno);
 545         /* Read so that command is completed */
 546         s->regs->cmd;
 547
 548         return 0;
 549 }
 550
 551 static inline void socal_download_fw(struct socal *s)
 552 {
 553 #ifdef HAVE_SOCAL_UCODE
 554         SOD(("Loading %ld bytes from %p to %p\n", sizeof(socal_ucode), socal_ucode, s->xram))
 555         socal_memcpy (s->xram, socal_ucode, sizeof(socal_ucode));
 556         SOD(("Clearing the rest of memory\n"))
 557         socal_bzero (s->xram + sizeof(socal_ucode), 65536 - sizeof(socal_ucode));
 558         SOD(("Done\n"))
 559 #endif
 560 }
 561
 562 /* Check for what the best SBUS burst we can use happens
 563  * to be on this machine.
 564  */
 565 static inline void socal_init_bursts(struct socal *s, struct linux_sbus_device *sdev)
 566 {
 567         int bsizes, bsizes_more;
 568         u32 cfg;
 569
 570         bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff);
 571         bsizes_more = (prom_getintdefault(sdev->my_bus->prom_node, "burst-sizes", 0xff) & 0xff);
 572         bsizes &= bsizes_more;
 573 #ifdef USE_64BIT_MODE
 574 #ifdef __sparc_v9__
 575         mmu_set_sbus64(sdev, bsizes >> 16);
 576 #endif
 577 #endif
 578         if ((bsizes & 0x7f) == 0x7f)
 579                 cfg = SOCAL_CFG_BURST_64;
 580         else if ((bsizes & 0x3f) == 0x3f)
 581                 cfg = SOCAL_CFG_BURST_32;
 582         else if ((bsizes & 0x1f) == 0x1f)
 583                 cfg = SOCAL_CFG_BURST_16;
 584         else
 585                 cfg = SOCAL_CFG_BURST_4;
 586 #ifdef USE_64BIT_MODE
 587 #ifdef __sparc_v9__
 588         /* What is BURST_128? -jj */
 589         if ((bsizes & 0x780000) == 0x780000)
 590                 cfg |= (SOCAL_CFG_BURST_64 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 591         else if ((bsizes & 0x380000) == 0x380000)
 592                 cfg |= (SOCAL_CFG_BURST_32 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 593         else if ((bsizes & 0x180000) == 0x180000)
 594                 cfg |= (SOCAL_CFG_BURST_16 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 595         else
 596                 cfg |= (SOCAL_CFG_BURST_8 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 597 #endif
 598 #endif
 599         s->cfg = cfg;
 600 }
 601
 602 static inline void socal_init(struct linux_sbus_device *sdev, int no)
 603 {
 604         unsigned char tmp[60];
 605         int propl;
 606         struct socal *s;
 607         static unsigned version_printed = 0;
 608         socal_hw_cq cq[8];
 609         int size, i;
 610         int irq, node;
 611
 612         s = kmalloc (sizeof (struct socal), GFP_KERNEL);
 613         if (!s) return;
 614         memset (s, 0, sizeof(struct socal));
 615         s->socal_no = no;
 616
 617         SOD(("socals %08lx socal_intr %08lx socal_hw_enque %08lx\n", (long)socals, (long)socal_intr, (long)socal_hw_enque))
 618         if (version_printed++ == 0)
 619                 printk (version);
 620 #ifdef MODULE
 621         s->port[0].fc.module = &__this_module;
 622         s->port[1].fc.module = &__this_module;
 623 #else
 624         s->port[0].fc.module = NULL;
 625         s->port[1].fc.module = NULL;
 626 #endif
 627
 628         s->next = socals;
 629         socals = s;
 630         s->port[0].fc.dev = sdev;
 631         s->port[1].fc.dev = sdev;
 632         s->port[0].s = s;
 633         s->port[1].s = s;
 634
 635         s->port[0].fc.next = &s->port[1].fc;
 636
 637         /* World Wide Name of SOCAL */
 638         propl = prom_getproperty (sdev->prom_node, "wwn", tmp, sizeof(tmp));
 639         if (propl != sizeof (fc_wwn)) {
 640                 s->wwn.naaid = NAAID_IEEE_REG;
 641                 s->wwn.nportid = 0x123;
 642                 s->wwn.hi = 0x1234;
 643                 s->wwn.lo = 0x12345678;
 644         } else
 645                 memcpy (&s->wwn, tmp, sizeof (fc_wwn));
 646
 647         memcpy (&s->port[0].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
 648         s->port[0].fc.wwn_nport.lo++;
 649         memcpy (&s->port[1].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
 650         s->port[1].fc.wwn_nport.lo+=2;
 651
 652         node = prom_getchild (sdev->prom_node);
 653         while (node && (node = prom_searchsiblings (node, "sf"))) {
 654                 int port;
 655
 656                 port = prom_getintdefault(node, "port#", -1);
 657                 switch (port) {
 658                 case 0:
 659                 case 1:
 660                         if (prom_getproplen(node, "port-wwn") == sizeof (fc_wwn))
 661                                 prom_getproperty (node, "port-wwn",
 662                                                   (char *)&s->port[port].fc.wwn_nport,
 663                                                   sizeof (fc_wwn));
 664                         break;
 665                 default:
 666                         break;
 667                 }
 668                 node = prom_getsibling(node);
 669         }
 670
 671         memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
 672         memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
 673         SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n",
 674                 *(u32 *)&s->port[0].fc.wwn_node, s->port[0].fc.wwn_node.lo,
 675                 *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo,
 676                 *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo))
 677
 678         s->port[0].fc.sid = 1;
 679         s->port[1].fc.sid = 17;
 680         s->port[0].fc.did = 2;
 681         s->port[1].fc.did = 18;
 682
 683         s->port[0].fc.reset = socal_reset;
 684         s->port[1].fc.reset = socal_reset;
 685
 686         /* Setup the reg property for this device. */
 687         prom_apply_sbus_ranges(sdev->my_bus, sdev->reg_addrs, sdev->num_registers, sdev);
 688
 689         if (sdev->num_registers == 1) {
 690                 s->eeprom = (u8 *)
 691                         sparc_alloc_io (sdev->reg_addrs [0].phys_addr, 0,
 692                                 sdev->reg_addrs [0].reg_size, "socal_xram",
 693                                 sdev->reg_addrs [0].which_io, 0);
 694                 if (sdev->reg_addrs [0].reg_size > 0x20000)
 695                         s->xram = s->eeprom + 0x10000;
 696                 else
 697                         s->xram = s->eeprom;
 698                 s->regs = (struct socal_regs *)(s->xram + 0x10000);
 699         } else {
 700                 /* E.g. starfire presents 3 registers for SOCAL */
 701                 s->xram = (u8 *)
 702                         sparc_alloc_io (sdev->reg_addrs [1].phys_addr, 0,
 703                                 sdev->reg_addrs [1].reg_size, "socal_xram",
 704                                 sdev->reg_addrs [1].which_io, 0);
 705                 s->regs = (struct socal_regs *)
 706                         sparc_alloc_io (sdev->reg_addrs [2].phys_addr, 0,
 707                                 sdev->reg_addrs [2].reg_size, "socal_regs",
 708                                 sdev->reg_addrs [2].which_io, 0);
 709         }
 710
 711         socal_init_bursts(s, sdev);
 712
 713         SOD(("Disabling SOCAL\n"))
 714
 715         socal_disable (s);
 716
 717         irq = sdev->irqs[0];
 718
 719         if (request_irq (irq, socal_intr, SA_SHIRQ, "SOCAL", (void *)s)) {
 720                 socal_printk ("Cannot order irq %d to go\n", irq);
 721                 socals = s->next;
 722                 return;
 723         }
 724
 725         SOD(("SOCAL uses IRQ %s\n", __irq_itoa(irq)))
 726
 727         s->port[0].fc.irq = irq;
 728         s->port[1].fc.irq = irq;
 729
 730         sprintf (s->port[0].fc.name, "socal%d port A", no);
 731         sprintf (s->port[1].fc.name, "socal%d port B", no);
 732         s->port[0].flags = SOCAL_FC_HDR | SOCAL_PORT_A;
 733         s->port[1].flags = SOCAL_FC_HDR | SOCAL_PORT_B;
 734         s->port[1].mask = (1 << 11);
 735
 736         s->port[0].fc.hw_enque = socal_hw_enque;
 737         s->port[1].fc.hw_enque = socal_hw_enque;
 738
 739         socal_download_fw (s);
 740
 741         SOD(("Downloaded firmware\n"))
 742
 743         /* Now setup xram circular queues */
 744         memset (cq, 0, sizeof(cq));
 745
 746         size = (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE + SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE + SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req);
 747         s->req[0].pool = (socal_req *) sparc_dvma_malloc (size, "SOCAL request queues", &cq[0].address);
 748         s->req[1].pool = s->req[0].pool + SOCAL_CQ_REQ0_SIZE;
 749         s->rsp[0].pool = s->req[1].pool + SOCAL_CQ_REQ1_SIZE;
 750         s->rsp[1].pool = s->rsp[0].pool + SOCAL_CQ_RSP0_SIZE;
 751         s->rsp[2].pool = s->rsp[1].pool + SOCAL_CQ_RSP1_SIZE;
 752
 753         s->req[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET);
 754         s->req[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET + sizeof(socal_hw_cq));
 755         s->rsp[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET);
 756         s->rsp[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + sizeof(socal_hw_cq));
 757         s->rsp[2].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + 2 * sizeof(socal_hw_cq));
 758
 759         cq[1].address = cq[0].address + (SOCAL_CQ_REQ0_SIZE * sizeof(socal_req));
 760         cq[4].address = cq[1].address + (SOCAL_CQ_REQ1_SIZE * sizeof(socal_req));
 761         cq[5].address = cq[4].address + (SOCAL_CQ_RSP0_SIZE * sizeof(socal_req));
 762         cq[6].address = cq[5].address + (SOCAL_CQ_RSP1_SIZE * sizeof(socal_req));
 763
 764         cq[0].last = SOCAL_CQ_REQ0_SIZE - 1;
 765         cq[1].last = SOCAL_CQ_REQ1_SIZE - 1;
 766         cq[4].last = SOCAL_CQ_RSP0_SIZE - 1;
 767         cq[5].last = SOCAL_CQ_RSP1_SIZE - 1;
 768         cq[6].last = SOCAL_CQ_RSP2_SIZE - 1;
 769         for (i = 0; i < 8; i++)
 770                 cq[i].seqno = 1;
 771
 772         s->req[0].last = SOCAL_CQ_REQ0_SIZE - 1;
 773         s->req[1].last = SOCAL_CQ_REQ1_SIZE - 1;
 774         s->rsp[0].last = SOCAL_CQ_RSP0_SIZE - 1;
 775         s->rsp[1].last = SOCAL_CQ_RSP1_SIZE - 1;
 776         s->rsp[2].last = SOCAL_CQ_RSP2_SIZE - 1;
 777
 778         s->req[0].seqno = 1;
 779         s->req[1].seqno = 1;
 780         s->rsp[0].seqno = 1;
 781         s->rsp[1].seqno = 1;
 782         s->rsp[2].seqno = 1;
 783
 784         socal_memcpy (s->xram + SOCAL_CQ_REQ_OFFSET, cq, sizeof(cq));
 785
 786         SOD(("Setting up params\n"))
 787
 788         /* Make our sw copy of SOCAL service parameters */
 789         socal_memcpy (s->serv_params, s->xram + 0x280, sizeof (s->serv_params));
 790
 791         s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params;
 792         s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
 793         s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params;
 794         s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
 795
 796         socal_enable (s);
 797
 798         SOD(("Enabled SOCAL\n"))
 799 }
 800
 801 #ifndef MODULE
 802 __initfunc(int socal_probe(void))
 803 #else
 804 int init_module(void)
 805 #endif
 806 {
 807         struct linux_sbus *bus;
 808         struct linux_sbus_device *sdev = 0;
 809         struct socal *s;
 810         int cards = 0;
 811
 812         for_each_sbus(bus) {
 813                 for_each_sbusdev(sdev, bus) {
 814                         if(!strcmp(sdev->prom_name, "SUNW,socal")) {
 815                                 socal_init(sdev, cards);
 816                                 cards++;
 817                         }
 818                 }
 819         }
 820         if (!cards) return -EIO;
 821
 822         for_each_socal(s)
 823                 if (s->next)
 824                         s->port[1].fc.next = &s->next->port[0].fc;
 825
 826         fcp_init (&socals->port[0].fc);
 827         return 0;
 828 }
 829
 830 EXPORT_NO_SYMBOLS;
 831
 832 #ifdef MODULE
 833 void cleanup_module(void)
 834 {
 835         struct socal *s;
 836         int irq;
 837         struct linux_sbus_device *sdev;
 838
 839         for_each_socal(s) {
 840                 irq = s->port[0].fc.irq;
 841                 disable_irq (irq);
 842                 free_irq (irq, s);
 843
 844                 fcp_release(&(s->port[0].fc), 2);
 845
 846                 sdev = s->port[0].fc.dev;
 847                 if (sdev->num_registers == 1)
 848                         sparc_free_io (s->eeprom, sdev->reg_addrs [0].reg_size);
 849                 else {
 850                         sparc_free_io (s->xram, sdev->reg_addrs [1].reg_size);
 851                         sparc_free_io ((char *)s->regs, sdev->reg_addrs [2].reg_size);
 852                 }
 853                 /* FIXME: sparc_dvma_free() ??? */
 854         }
 855 }
 856 #endif