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