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/types.h>
  21 #include <linux/fcntl.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/ptrace.h>
  24 #include <linux/ioport.h>
  25 #include <linux/in.h>
  26 #include <linux/slab.h>
  27 #include <linux/string.h>
  28 #include <linux/init.h>
  29 #include <linux/bitops.h>
  30 #include <asm/system.h>
  31 #include <asm/io.h>
  32 #include <asm/dma.h>
  33 #include <linux/errno.h>
  34 #include <asm/byteorder.h>
  35
  36 #include <asm/openprom.h>
  37 #include <asm/oplib.h>
  38 #include <asm/pgtable.h>
  39 #include <asm/irq.h>
  40
  41 /* #define SOCALDEBUG */
  42 /* #define HAVE_SOCAL_UCODE */
  43 /* #define USE_64BIT_MODE */
  44
  45 #include "fcp_impl.h"
  46 #include "socal.h"
  47 #ifdef HAVE_SOCAL_UCODE
  48 #include "socal_asm.h"
  49 #endif
  50
  51 #define socal_printk printk ("socal%d: ", s->socal_no); printk
  52
  53 #ifdef SOCALDEBUG
  54 #define SOD(x)  socal_printk x;
  55 #else
  56 #define SOD(x)
  57 #endif
  58
  59 #define for_each_socal(s) for (s = socals; s; s = s->next)
  60 struct socal *socals = NULL;
  61
  62 static void socal_copy_from_xram(void *d, void __iomem *xram, long size)
  63 {
  64         u32 *dp = (u32 *) d;
  65         while (size) {
  66                 *dp++ = sbus_readl(xram);
  67                 xram += sizeof(u32);
  68                 size -= sizeof(u32);
  69         }
  70 }
  71
  72 static void socal_copy_to_xram(void __iomem *xram, void *s, long size)
  73 {
  74         u32 *sp = (u32 *) s;
  75         while (size) {
  76                 u32 val = *sp++;
  77                 sbus_writel(val, xram);
  78                 xram += sizeof(u32);
  79                 size -= sizeof(u32);
  80         }
  81 }
  82
  83 #ifdef HAVE_SOCAL_UCODE
  84 static void socal_bzero(unsigned long xram, int size)
  85 {
  86         while (size) {
  87                 sbus_writel(0, xram);
  88                 xram += sizeof(u32);
  89                 size -= sizeof(u32);
  90         }
  91 }
  92 #endif
  93
  94 static inline void socal_disable(struct socal *s)
  95 {
  96         sbus_writel(0, s->regs + IMASK);
  97         sbus_writel(SOCAL_CMD_SOFT_RESET, s->regs + CMD);
  98 }
  99
 100 static inline void socal_enable(struct socal *s)
 101 {
 102         SOD(("enable %08x\n", s->cfg))
 103         sbus_writel(0, s->regs + SAE);
 104         sbus_writel(s->cfg, s->regs + CFG);
 105         sbus_writel(SOCAL_CMD_RSP_QALL, s->regs + CMD);
 106         SOCAL_SETIMASK(s, SOCAL_IMASK_RSP_QALL | SOCAL_IMASK_SAE);
 107         SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
 108 }
 109
 110 static void socal_reset(fc_channel *fc)
 111 {
 112         socal_port *port = (socal_port *)fc;
 113         struct socal *s = port->s;
 114
 115         /* FIXME */
 116         socal_disable(s);
 117         s->req[0].seqno = 1;
 118         s->req[1].seqno = 1;
 119         s->rsp[0].seqno = 1;
 120         s->rsp[1].seqno = 1;
 121         s->req[0].in = 0;
 122         s->req[1].in = 0;
 123         s->rsp[0].in = 0;
 124         s->rsp[1].in = 0;
 125         s->req[0].out = 0;
 126         s->req[1].out = 0;
 127         s->rsp[0].out = 0;
 128         s->rsp[1].out = 0;
 129
 130         /* FIXME */
 131         socal_enable(s);
 132 }
 133
 134 static inline void socal_solicited(struct socal *s, unsigned long qno)
 135 {
 136         socal_rsp *hwrsp;
 137         socal_cq *sw_cq;
 138         int token;
 139         int status;
 140         fc_channel *fc;
 141
 142         sw_cq = &s->rsp[qno];
 143
 144         /* Finally an improvement against old SOC :) */
 145         sw_cq->in = sbus_readb(s->regs + RESP + qno);
 146         SOD (("socal_solicited, %d packets arrived\n",
 147               (sw_cq->in - sw_cq->out) & sw_cq->last))
 148         for (;;) {
 149                 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
 150                 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
 151
 152 #if defined(SOCALDEBUG) && 0
 153                 {
 154                 u32 *u = (u32 *)hwrsp;
 155                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
 156                      u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 157                 u += 8;
 158                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
 159                      u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 160                 u = (u32 *)s->xram;
 161                 while (u < ((u32 *)s->regs)) {
 162                         if (sbus_readl(&u[0]) == 0x00003000 ||
 163                             sbus_readl(&u[0]) == 0x00003801) {
 164                         SOD(("Found at %04lx\n",
 165                              (unsigned long)u - (unsigned long)s->xram))
 166                         SOD(("  %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
 167                              sbus_readl(&u[0]), sbus_readl(&u[1]),
 168                              sbus_readl(&u[2]), sbus_readl(&u[3]),
 169                              sbus_readl(&u[4]), sbus_readl(&u[5]),
 170                              sbus_readl(&u[6]), sbus_readl(&u[7])))
 171                         u += 8;
 172                         SOD(("  %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
 173                              sbus_readl(&u[0]), sbus_readl(&u[1]),
 174                              sbus_readl(&u[2]), sbus_readl(&u[3]),
 175                              sbus_readl(&u[4]), sbus_readl(&u[5]),
 176                              sbus_readl(&u[6]), sbus_readl(&u[7])))
 177                         u -= 8;
 178                         }
 179                         u++;
 180                 }
 181                 }
 182 #endif
 183
 184                 token = hwrsp->shdr.token;
 185                 status = hwrsp->status;
 186                 fc = (fc_channel *)(&s->port[(token >> 11) & 1]);
 187
 188                 SOD(("Solicited token %08x status %08x\n", token, status))
 189                 if (status == SOCAL_OK) {
 190                         fcp_receive_solicited(fc, token >> 12,
 191                                               token & ((1 << 11) - 1),
 192                                               FC_STATUS_OK, NULL);
 193                 } else {
 194                         /* We have intentionally defined FC_STATUS_* constants
 195                          * to match SOCAL_* constants, otherwise we'd have to
 196                          * translate status.
 197                          */
 198                         fcp_receive_solicited(fc, token >> 12,
 199                                               token & ((1 << 11) - 1), status, &hwrsp->fchdr);
 200                 }
 201
 202                 if (++sw_cq->out > sw_cq->last) {
 203                         sw_cq->seqno++;
 204                         sw_cq->out = 0;
 205                 }
 206
 207                 if (sw_cq->out == sw_cq->in) {
 208                         sw_cq->in = sbus_readb(s->regs + RESP + qno);
 209                         if (sw_cq->out == sw_cq->in) {
 210                                 /* Tell the hardware about it */
 211                                 sbus_writel((sw_cq->out << 24) |
 212                                             (SOCAL_CMD_RSP_QALL &
 213                                              ~(SOCAL_CMD_RSP_Q0 << qno)),
 214                                             s->regs + CMD);
 215
 216                                 /* Read it, so that we're sure it has been updated */
 217                                 sbus_readl(s->regs + CMD);
 218                                 sw_cq->in = sbus_readb(s->regs + RESP + qno);
 219                                 if (sw_cq->out == sw_cq->in)
 220                                         break;
 221                         }
 222                 }
 223         }
 224 }
 225
 226 static inline void socal_request (struct socal *s, u32 cmd)
 227 {
 228         SOCAL_SETIMASK(s, s->imask & ~(cmd & SOCAL_CMD_REQ_QALL));
 229         SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
 230
 231         SOD(("Queues available %08x OUT %X\n", cmd, s->regs->reqpr[0]))
 232         if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) {
 233                 fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port]));
 234                 if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out))
 235                         fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
 236         } else {
 237                 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
 238         }
 239         if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE)
 240                 s->curr_port ^= 1;
 241 }
 242
 243 static inline void socal_unsolicited (struct socal *s, unsigned long qno)
 244 {
 245         socal_rsp *hwrsp, *hwrspc;
 246         socal_cq *sw_cq;
 247         int count;
 248         int status;
 249         int flags;
 250         fc_channel *fc;
 251
 252         sw_cq = &s->rsp[qno];
 253
 254         sw_cq->in = sbus_readb(s->regs + RESP + qno);
 255         SOD (("socal_unsolicited, %d packets arrived, in %d\n",
 256               (sw_cq->in - sw_cq->out) & sw_cq->last, sw_cq->in))
 257         while (sw_cq->in != sw_cq->out) {
 258                 /* ...real work per entry here... */
 259                 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
 260                 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
 261
 262 #if defined(SOCALDEBUG) && 0
 263                 {
 264                 u32 *u = (u32 *)hwrsp;
 265                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
 266                      u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 267                 u += 8;
 268                 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
 269                      u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
 270                 }
 271 #endif
 272
 273                 hwrspc = NULL;
 274                 flags = hwrsp->shdr.flags;
 275                 count = hwrsp->count;
 276                 fc = (fc_channel *)&s->port[flags & SOCAL_PORT_B];
 277                 SOD(("FC %08lx\n", (long)fc))
 278
 279                 if (count != 1) {
 280                         /* Ugh, continuation entries */
 281                         u8 in;
 282
 283                         if (count != 2) {
 284                                 printk("%s: Too many continuations entries %d\n",
 285                                        fc->name, count);
 286                                 goto update_out;
 287                         }
 288
 289                         in = sw_cq->in;
 290                         if (in < sw_cq->out)
 291                                 in += sw_cq->last + 1;
 292                         if (in < sw_cq->out + 2) {
 293                                 /* Ask the hardware if they haven't arrived yet. */
 294                                 sbus_writel((sw_cq->out << 24) |
 295                                             (SOCAL_CMD_RSP_QALL &
 296                                              ~(SOCAL_CMD_RSP_Q0 << qno)),
 297                                             s->regs + CMD);
 298
 299                                 /* Read it, so that we're sure it has been updated */
 300                                 sbus_readl(s->regs + CMD);
 301                                 sw_cq->in = sbus_readb(s->regs + RESP + qno);
 302                                 in = sw_cq->in;
 303                                 if (in < sw_cq->out)
 304                                         in += sw_cq->last + 1;
 305                                 if (in < sw_cq->out + 2) /* Nothing came, let us wait */
 306                                         return;
 307                         }
 308                         if (sw_cq->out == sw_cq->last)
 309                                 hwrspc = (socal_rsp *)sw_cq->pool;
 310                         else
 311                                 hwrspc = hwrsp + 1;
 312                 }
 313
 314                 switch (flags & ~SOCAL_PORT_B) {
 315                 case SOCAL_STATUS:
 316                         status = hwrsp->status;
 317                         switch (status) {
 318                         case SOCAL_ONLINE:
 319                                 SOD(("State change to ONLINE\n"));
 320                                 fcp_state_change(fc, FC_STATE_ONLINE);
 321                                 break;
 322                         case SOCAL_ONLINE_LOOP:
 323                                 SOD(("State change to ONLINE_LOOP\n"));
 324                                 fcp_state_change(fc, FC_STATE_ONLINE);
 325                                 break;
 326                         case SOCAL_OFFLINE:
 327                                 SOD(("State change to OFFLINE\n"));
 328                                 fcp_state_change(fc, FC_STATE_OFFLINE);
 329                                 break;
 330                         default:
 331                                 printk ("%s: Unknown STATUS no %d\n",
 332                                         fc->name, status);
 333                                 break;
 334                         };
 335
 336                         break;
 337                 case (SOCAL_UNSOLICITED|SOCAL_FC_HDR):
 338                         {
 339                                 int r_ctl = *((u8 *)&hwrsp->fchdr);
 340                                 unsigned len;
 341
 342                                 if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) {
 343                                         len = hwrsp->shdr.bytecnt;
 344                                         if (len < 4 || !hwrspc) {
 345                                                 printk ("%s: Invalid R_CTL %02x "
 346                                                         "continuation entries\n",
 347                                                         fc->name, r_ctl);
 348                                         } else {
 349                                                 if (len > 60)
 350                                                         len = 60;
 351                                                 if (*(u32 *)hwrspc == LS_DISPLAY) {
 352                                                         int i;
 353
 354                                                         for (i = 4; i < len; i++)
 355                                                                 if (((u8 *)hwrspc)[i] == '\n')
 356                                                                         ((u8 *)hwrspc)[i] = ' ';
 357                                                         ((u8 *)hwrspc)[len] = 0;
 358                                                         printk ("%s message: %s\n",
 359                                                                 fc->name, ((u8 *)hwrspc) + 4);
 360                                                 } else {
 361                                                         printk ("%s: Unknown LS_CMD "
 362                                                                 "%08x\n", fc->name,
 363                                                                 *(u32 *)hwrspc);
 364                                                 }
 365                                         }
 366                                 } else {
 367                                         printk ("%s: Unsolicited R_CTL %02x "
 368                                                 "not handled\n", fc->name, r_ctl);
 369                                 }
 370                         }
 371                         break;
 372                 default:
 373                         printk ("%s: Unexpected flags %08x\n", fc->name, flags);
 374                         break;
 375                 };
 376 update_out:
 377                 if (++sw_cq->out > sw_cq->last) {
 378                         sw_cq->seqno++;
 379                         sw_cq->out = 0;
 380                 }
 381
 382                 if (hwrspc) {
 383                         if (++sw_cq->out > sw_cq->last) {
 384                                 sw_cq->seqno++;
 385                                 sw_cq->out = 0;
 386                         }
 387                 }
 388
 389                 if (sw_cq->out == sw_cq->in) {
 390                         sw_cq->in = sbus_readb(s->regs + RESP + qno);
 391                         if (sw_cq->out == sw_cq->in) {
 392                                 /* Tell the hardware about it */
 393                                 sbus_writel((sw_cq->out << 24) |
 394                                             (SOCAL_CMD_RSP_QALL &
 395                                              ~(SOCAL_CMD_RSP_Q0 << qno)),
 396                                             s->regs + CMD);
 397
 398                                 /* Read it, so that we're sure it has been updated */
 399                                 sbus_readl(s->regs + CMD);
 400                                 sw_cq->in = sbus_readb(s->regs + RESP + qno);
 401                         }
 402                 }
 403         }
 404 }
 405
 406 static irqreturn_t socal_intr(int irq, void *dev_id)
 407 {
 408         u32 cmd;
 409         unsigned long flags;
 410         register struct socal *s = (struct socal *)dev_id;
 411
 412         spin_lock_irqsave(&s->lock, flags);
 413         cmd = sbus_readl(s->regs + CMD);
 414         for (; (cmd = SOCAL_INTR (s, cmd)); cmd = sbus_readl(s->regs + CMD)) {
 415 #ifdef SOCALDEBUG
 416                 static int cnt = 0;
 417                 if (cnt++ < 50)
 418                         printk("soc_intr %08x\n", cmd);
 419 #endif
 420                 if (cmd & SOCAL_CMD_RSP_Q2)
 421                         socal_unsolicited (s, SOCAL_UNSOLICITED_RSP_Q);
 422                 if (cmd & SOCAL_CMD_RSP_Q1)
 423                         socal_unsolicited (s, SOCAL_SOLICITED_BAD_RSP_Q);
 424                 if (cmd & SOCAL_CMD_RSP_Q0)
 425                         socal_solicited (s, SOCAL_SOLICITED_RSP_Q);
 426                 if (cmd & SOCAL_CMD_REQ_QALL)
 427                         socal_request (s, cmd);
 428         }
 429         spin_unlock_irqrestore(&s->lock, flags);
 430
 431         return IRQ_HANDLED;
 432 }
 433
 434 #define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port))
 435
 436 static int socal_hw_enque (fc_channel *fc, fcp_cmnd *fcmd)
 437 {
 438         socal_port *port = (socal_port *)fc;
 439         struct socal *s = port->s;
 440         unsigned long qno;
 441         socal_cq *sw_cq;
 442         int cq_next_in;
 443         socal_req *request;
 444         fc_hdr *fch;
 445         int i;
 446
 447         if (fcmd->proto == TYPE_SCSI_FCP)
 448                 qno = 1;
 449         else
 450                 qno = 0;
 451         SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno))
 452         if (s->imask & (SOCAL_IMASK_REQ_Q0 << qno)) {
 453                 SOD(("EIO %08x\n", s->imask))
 454                 return -EIO;
 455         }
 456         sw_cq = s->req + qno;
 457         cq_next_in = (sw_cq->in + 1) & sw_cq->last;
 458
 459         if (cq_next_in == sw_cq->out &&
 460             cq_next_in == (sw_cq->out = sbus_readb(s->regs + REQP + qno))) {
 461                 SOD(("%d IN %d OUT %d LAST %d\n",
 462                      qno, sw_cq->in,
 463                      sw_cq->out, sw_cq->last))
 464                 SOCAL_SETIMASK(s, s->imask | (SOCAL_IMASK_REQ_Q0 << qno));
 465                 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
 466
 467                 /* If queue is full, just say NO. */
 468                 return -EBUSY;
 469         }
 470
 471         request = sw_cq->pool + sw_cq->in;
 472         fch = &request->fchdr;
 473
 474         switch (fcmd->proto) {
 475         case TYPE_SCSI_FCP:
 476                 request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token);
 477                 request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd);
 478                 request->data[0].count = sizeof(fcp_cmd);
 479                 request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size;
 480                 request->data[1].count = fc->rsp_size;
 481                 if (fcmd->data) {
 482                         request->shdr.segcnt = 3;
 483                         i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len;
 484                         request->shdr.bytecnt = i;
 485                         request->data[2].base = fcmd->data;
 486                         request->data[2].count = i;
 487                         request->type = (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ?
 488                                 SOCAL_CQTYPE_IO_WRITE : SOCAL_CQTYPE_IO_READ;
 489                 } else {
 490                         request->shdr.segcnt = 2;
 491                         request->shdr.bytecnt = 0;
 492                         request->data[2].base = 0;
 493                         request->data[2].count = 0;
 494                         request->type = SOCAL_CQTYPE_SIMPLE;
 495                 }
 496                 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
 497                 FILL_FCHDR_SID(fch, fc->sid);
 498                 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
 499                 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
 500                 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
 501                 fch->param = 0;
 502                 request->shdr.flags = port->flags;
 503                 request->shdr.class = fc->posmap ? 3 : 2;
 504                 break;
 505
 506         case PROTO_OFFLINE:
 507                 memset (request, 0, sizeof(*request));
 508                 request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token);
 509                 request->type = SOCAL_CQTYPE_OFFLINE;
 510                 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
 511                 FILL_FCHDR_SID(fch, fc->sid);
 512                 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
 513                 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
 514                 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
 515                 request->shdr.flags = port->flags;
 516                 break;
 517
 518         case PROTO_REPORT_AL_MAP:
 519                 memset (request, 0, sizeof(*request));
 520                 request->shdr.token = TOKEN(PROTO_REPORT_AL_MAP, port->mask, fcmd->token);
 521                 request->type = SOCAL_CQTYPE_REPORT_MAP;
 522                 request->shdr.flags = port->flags;
 523                 request->shdr.segcnt = 1;
 524                 request->shdr.bytecnt = sizeof(fc_al_posmap);
 525                 request->data[0].base = fcmd->cmd;
 526                 request->data[0].count = sizeof(fc_al_posmap);
 527                 break;
 528
 529         default:
 530                 request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token);
 531                 request->shdr.class = fc->posmap ? 3 : 2;
 532                 request->shdr.flags = port->flags;
 533                 memcpy (fch, &fcmd->fch, sizeof(fc_hdr));
 534                 request->data[0].count = fcmd->cmdlen;
 535                 request->data[1].count = fcmd->rsplen;
 536                 request->type = fcmd->class;
 537                 switch (fcmd->class) {
 538                 case FC_CLASS_OUTBOUND:
 539                         request->data[0].base = fcmd->cmd;
 540                         request->data[0].count = fcmd->cmdlen;
 541                         request->type = SOCAL_CQTYPE_OUTBOUND;
 542                         request->shdr.bytecnt = fcmd->cmdlen;
 543                         request->shdr.segcnt = 1;
 544                         break;
 545                 case FC_CLASS_INBOUND:
 546                         request->data[0].base = fcmd->rsp;
 547                         request->data[0].count = fcmd->rsplen;
 548                         request->type = SOCAL_CQTYPE_INBOUND;
 549                         request->shdr.bytecnt = 0;
 550                         request->shdr.segcnt = 1;
 551                         break;
 552                 case FC_CLASS_SIMPLE:
 553                         request->data[0].base = fcmd->cmd;
 554                         request->data[1].base = fcmd->rsp;
 555                         request->data[0].count = fcmd->cmdlen;
 556                         request->data[1].count = fcmd->rsplen;
 557                         request->type = SOCAL_CQTYPE_SIMPLE;
 558                         request->shdr.bytecnt = fcmd->cmdlen;
 559                         request->shdr.segcnt = 2;
 560                         break;
 561                 case FC_CLASS_IO_READ:
 562                 case FC_CLASS_IO_WRITE:
 563                         request->data[0].base = fcmd->cmd;
 564                         request->data[1].base = fcmd->rsp;
 565                         request->data[0].count = fcmd->cmdlen;
 566                         request->data[1].count = fcmd->rsplen;
 567                         request->type = (fcmd->class == FC_CLASS_IO_READ) ? SOCAL_CQTYPE_IO_READ : SOCAL_CQTYPE_IO_WRITE;
 568                         if (fcmd->data) {
 569                                 request->data[2].base = fcmd->data;
 570                                 request->data[2].count = fcmd->datalen;
 571                                 request->shdr.bytecnt = fcmd->datalen;
 572                                 request->shdr.segcnt = 3;
 573                         } else {
 574                                 request->shdr.bytecnt = 0;
 575                                 request->shdr.segcnt = 2;
 576                         }
 577                         break;
 578                 }
 579                 break;
 580         }
 581
 582         request->count = 1;
 583         request->flags = 0;
 584         request->seqno = sw_cq->seqno;
 585
 586         SOD(("queueing token %08x\n", request->shdr.token))
 587
 588         /* And now tell the SOCAL about it */
 589
 590         if (++sw_cq->in > sw_cq->last) {
 591                 sw_cq->in = 0;
 592                 sw_cq->seqno++;
 593         }
 594
 595         SOD(("Putting %08x into cmd\n", SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno)))
 596
 597         sbus_writel(SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno),
 598                     s->regs + CMD);
 599
 600         /* Read so that command is completed */
 601         sbus_readl(s->regs + CMD);
 602
 603         return 0;
 604 }
 605
 606 static inline void socal_download_fw(struct socal *s)
 607 {
 608 #ifdef HAVE_SOCAL_UCODE
 609         SOD(("Loading %ld bytes from %p to %p\n", sizeof(socal_ucode), socal_ucode, s->xram))
 610         socal_copy_to_xram(s->xram, socal_ucode, sizeof(socal_ucode));
 611         SOD(("Clearing the rest of memory\n"))
 612         socal_bzero (s->xram + sizeof(socal_ucode), 65536 - sizeof(socal_ucode));
 613         SOD(("Done\n"))
 614 #endif
 615 }
 616
 617 /* Check for what the best SBUS burst we can use happens
 618  * to be on this machine.
 619  */
 620 static inline void socal_init_bursts(struct socal *s, struct sbus_dev *sdev)
 621 {
 622         int bsizes, bsizes_more;
 623         u32 cfg;
 624
 625         bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff);
 626         bsizes_more = (prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff) & 0xff);
 627         bsizes &= bsizes_more;
 628 #ifdef USE_64BIT_MODE
 629 #ifdef __sparc_v9__
 630         mmu_set_sbus64(sdev, bsizes >> 16);
 631 #endif
 632 #endif
 633         if ((bsizes & 0x7f) == 0x7f)
 634                 cfg = SOCAL_CFG_BURST_64;
 635         else if ((bsizes & 0x3f) == 0x3f)
 636                 cfg = SOCAL_CFG_BURST_32;
 637         else if ((bsizes & 0x1f) == 0x1f)
 638                 cfg = SOCAL_CFG_BURST_16;
 639         else
 640                 cfg = SOCAL_CFG_BURST_4;
 641 #ifdef USE_64BIT_MODE
 642 #ifdef __sparc_v9__
 643         /* What is BURST_128? -jj */
 644         if ((bsizes & 0x780000) == 0x780000)
 645                 cfg |= (SOCAL_CFG_BURST_64 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 646         else if ((bsizes & 0x380000) == 0x380000)
 647                 cfg |= (SOCAL_CFG_BURST_32 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 648         else if ((bsizes & 0x180000) == 0x180000)
 649                 cfg |= (SOCAL_CFG_BURST_16 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 650         else
 651                 cfg |= (SOCAL_CFG_BURST_8 << 8) | SOCAL_CFG_SBUS_ENHANCED;
 652 #endif
 653 #endif
 654         s->cfg = cfg;
 655 }
 656
 657 static inline void socal_init(struct sbus_dev *sdev, int no)
 658 {
 659         unsigned char tmp[60];
 660         int propl;
 661         struct socal *s;
 662         static unsigned version_printed = 0;
 663         socal_hw_cq cq[8];
 664         int size, i;
 665         int irq, node;
 666
 667         s = kzalloc (sizeof (struct socal), GFP_KERNEL);
 668         if (!s) return;
 669         spin_lock_init(&s->lock);
 670         s->socal_no = no;
 671
 672         SOD(("socals %08lx socal_intr %08lx socal_hw_enque %08lx\n",
 673              (long)socals, (long)socal_intr, (long)socal_hw_enque))
 674         if (version_printed++ == 0)
 675                 printk (version);
 676
 677         s->port[0].fc.module = THIS_MODULE;
 678         s->port[1].fc.module = THIS_MODULE;
 679
 680         s->next = socals;
 681         socals = s;
 682         s->port[0].fc.dev = sdev;
 683         s->port[1].fc.dev = sdev;
 684         s->port[0].s = s;
 685         s->port[1].s = s;
 686
 687         s->port[0].fc.next = &s->port[1].fc;
 688
 689         /* World Wide Name of SOCAL */
 690         propl = prom_getproperty (sdev->prom_node, "wwn", tmp, sizeof(tmp));
 691         if (propl != sizeof (fc_wwn)) {
 692                 s->wwn.naaid = NAAID_IEEE_REG;
 693                 s->wwn.nportid = 0x123;
 694                 s->wwn.hi = 0x1234;
 695                 s->wwn.lo = 0x12345678;
 696         } else
 697                 memcpy (&s->wwn, tmp, sizeof (fc_wwn));
 698
 699         memcpy (&s->port[0].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
 700         s->port[0].fc.wwn_nport.lo++;
 701         memcpy (&s->port[1].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
 702         s->port[1].fc.wwn_nport.lo+=2;
 703
 704         node = prom_getchild (sdev->prom_node);
 705         while (node && (node = prom_searchsiblings (node, "sf"))) {
 706                 int port;
 707
 708                 port = prom_getintdefault(node, "port#", -1);
 709                 switch (port) {
 710                 case 0:
 711                 case 1:
 712                         if (prom_getproplen(node, "port-wwn") == sizeof (fc_wwn))
 713                                 prom_getproperty (node, "port-wwn",
 714                                                   (char *)&s->port[port].fc.wwn_nport,
 715                                                   sizeof (fc_wwn));
 716                         break;
 717                 default:
 718                         break;
 719                 };
 720
 721                 node = prom_getsibling(node);
 722         }
 723
 724         memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
 725         memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
 726         SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n",
 727              *(u32 *)&s->port[0].fc.wwn_node, s->port[0].fc.wwn_node.lo,
 728              *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo,
 729              *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo))
 730
 731         s->port[0].fc.sid = 1;
 732         s->port[1].fc.sid = 17;
 733         s->port[0].fc.did = 2;
 734         s->port[1].fc.did = 18;
 735
 736         s->port[0].fc.reset = socal_reset;
 737         s->port[1].fc.reset = socal_reset;
 738
 739         if (sdev->num_registers == 1) {
 740                 s->eeprom = sbus_ioremap(&sdev->resource[0], 0,
 741                                          sdev->reg_addrs[0].reg_size, "socal xram");
 742                 if (sdev->reg_addrs[0].reg_size > 0x20000)
 743                         s->xram = s->eeprom + 0x10000UL;
 744                 else
 745                         s->xram = s->eeprom;
 746                 s->regs = (s->xram + 0x10000UL);
 747         } else {
 748                 /* E.g. starfire presents 3 registers for SOCAL */
 749                 s->xram = sbus_ioremap(&sdev->resource[1], 0,
 750                                        sdev->reg_addrs[1].reg_size, "socal xram");
 751                 s->regs = sbus_ioremap(&sdev->resource[2], 0,
 752                                        sdev->reg_addrs[2].reg_size, "socal regs");
 753         }
 754
 755         socal_init_bursts(s, sdev);
 756
 757         SOD(("Disabling SOCAL\n"))
 758
 759         socal_disable (s);
 760
 761         irq = sdev->irqs[0];
 762
 763         if (request_irq (irq, socal_intr, IRQF_SHARED, "SOCAL", (void *)s)) {
 764                 socal_printk ("Cannot order irq %d to go\n", irq);
 765                 socals = s->next;
 766                 return;
 767         }
 768
 769         SOD(("SOCAL uses IRQ %d\n", irq))
 770
 771         s->port[0].fc.irq = irq;
 772         s->port[1].fc.irq = irq;
 773
 774         sprintf (s->port[0].fc.name, "socal%d port A", no);
 775         sprintf (s->port[1].fc.name, "socal%d port B", no);
 776         s->port[0].flags = SOCAL_FC_HDR | SOCAL_PORT_A;
 777         s->port[1].flags = SOCAL_FC_HDR | SOCAL_PORT_B;
 778         s->port[1].mask = (1 << 11);
 779
 780         s->port[0].fc.hw_enque = socal_hw_enque;
 781         s->port[1].fc.hw_enque = socal_hw_enque;
 782
 783         socal_download_fw (s);
 784
 785         SOD(("Downloaded firmware\n"))
 786
 787         /* Now setup xram circular queues */
 788         memset (cq, 0, sizeof(cq));
 789
 790         size = (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE +
 791                 SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE +
 792                 SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req);
 793         s->req_cpu = sbus_alloc_consistent(sdev, size, &s->req_dvma);
 794         s->req[0].pool = s->req_cpu;
 795         cq[0].address = s->req_dvma;
 796         s->req[1].pool = s->req[0].pool + SOCAL_CQ_REQ0_SIZE;
 797         s->rsp[0].pool = s->req[1].pool + SOCAL_CQ_REQ1_SIZE;
 798         s->rsp[1].pool = s->rsp[0].pool + SOCAL_CQ_RSP0_SIZE;
 799         s->rsp[2].pool = s->rsp[1].pool + SOCAL_CQ_RSP1_SIZE;
 800
 801         s->req[0].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_REQ_OFFSET);
 802         s->req[1].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_REQ_OFFSET + sizeof(socal_hw_cq));
 803         s->rsp[0].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_RSP_OFFSET);
 804         s->rsp[1].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_RSP_OFFSET + sizeof(socal_hw_cq));
 805         s->rsp[2].hw_cq = (socal_hw_cq __iomem *)(s->xram + SOCAL_CQ_RSP_OFFSET + 2 * sizeof(socal_hw_cq));
 806
 807         cq[1].address = cq[0].address + (SOCAL_CQ_REQ0_SIZE * sizeof(socal_req));
 808         cq[4].address = cq[1].address + (SOCAL_CQ_REQ1_SIZE * sizeof(socal_req));
 809         cq[5].address = cq[4].address + (SOCAL_CQ_RSP0_SIZE * sizeof(socal_req));
 810         cq[6].address = cq[5].address + (SOCAL_CQ_RSP1_SIZE * sizeof(socal_req));
 811
 812         cq[0].last = SOCAL_CQ_REQ0_SIZE - 1;
 813         cq[1].last = SOCAL_CQ_REQ1_SIZE - 1;
 814         cq[4].last = SOCAL_CQ_RSP0_SIZE - 1;
 815         cq[5].last = SOCAL_CQ_RSP1_SIZE - 1;
 816         cq[6].last = SOCAL_CQ_RSP2_SIZE - 1;
 817         for (i = 0; i < 8; i++)
 818                 cq[i].seqno = 1;
 819
 820         s->req[0].last = SOCAL_CQ_REQ0_SIZE - 1;
 821         s->req[1].last = SOCAL_CQ_REQ1_SIZE - 1;
 822         s->rsp[0].last = SOCAL_CQ_RSP0_SIZE - 1;
 823         s->rsp[1].last = SOCAL_CQ_RSP1_SIZE - 1;
 824         s->rsp[2].last = SOCAL_CQ_RSP2_SIZE - 1;
 825
 826         s->req[0].seqno = 1;
 827         s->req[1].seqno = 1;
 828         s->rsp[0].seqno = 1;
 829         s->rsp[1].seqno = 1;
 830         s->rsp[2].seqno = 1;
 831
 832         socal_copy_to_xram(s->xram + SOCAL_CQ_REQ_OFFSET, cq, sizeof(cq));
 833
 834         SOD(("Setting up params\n"))
 835
 836         /* Make our sw copy of SOCAL service parameters */
 837         socal_copy_from_xram(s->serv_params, s->xram + 0x280, sizeof (s->serv_params));
 838
 839         s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params;
 840         s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
 841         s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params;
 842         s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
 843
 844         socal_enable (s);
 845
 846         SOD(("Enabled SOCAL\n"))
 847 }
 848
 849 static int __init socal_probe(void)
 850 {
 851         struct sbus_bus *sbus;
 852         struct sbus_dev *sdev = NULL;
 853         struct socal *s;
 854         int cards = 0;
 855
 856         for_each_sbus(sbus) {
 857                 for_each_sbusdev(sdev, sbus) {
 858                         if(!strcmp(sdev->prom_name, "SUNW,socal")) {
 859                                 socal_init(sdev, cards);
 860                                 cards++;
 861                         }
 862                 }
 863         }
 864         if (!cards)
 865                 return -EIO;
 866
 867         for_each_socal(s)
 868                 if (s->next)
 869                         s->port[1].fc.next = &s->next->port[0].fc;
 870
 871         fcp_init (&socals->port[0].fc);
 872         return 0;
 873 }
 874
 875 static void __exit socal_cleanup(void)
 876 {
 877         struct socal *s;
 878         int irq;
 879         struct sbus_dev *sdev;
 880
 881         for_each_socal(s) {
 882                 irq = s->port[0].fc.irq;
 883                 free_irq (irq, s);
 884
 885                 fcp_release(&(s->port[0].fc), 2);
 886
 887                 sdev = s->port[0].fc.dev;
 888                 if (sdev->num_registers == 1) {
 889                         sbus_iounmap(s->eeprom, sdev->reg_addrs[0].reg_size);
 890                 } else {
 891                         sbus_iounmap(s->xram, sdev->reg_addrs[1].reg_size);
 892                         sbus_iounmap(s->regs, sdev->reg_addrs[2].reg_size);
 893                 }
 894                 sbus_free_consistent(sdev,
 895                                      (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE +
 896                                       SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE +
 897                                       SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req),
 898                                      s->req_cpu, s->req_dvma);
 899         }
 900 }
 901
 902 module_init(socal_probe);
 903 module_exit(socal_cleanup);
 904 MODULE_LICENSE("GPL");