git.oblomov.eu Git - linux-2.6/blob - drivers/fc4/soc.c

   1 /* soc.c: Sparc SUNW,soc (Serial Optical Channel) Fibre Channel Sbus adapter support.
   2  *
   3  * Copyright (C) 1996,1997,1999 Jakub Jelinek (jj@ultra.linux.cz)
   4  * Copyright (C) 1997,1998 Jirka Hanika (geo@ff.cuni.cz)
   5  *
   6  * Sources:
   7  *      Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994
   8  *      dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995
   9  *
  10  * Supported hardware:
  11  *      Tested on SOC sbus card bought with SS1000 in Linux running on SS5 and Ultra1.
  12  *      For SOC sbus cards, you have to make sure your FCode is 1.52 or later.
  13  *      If you have older FCode, you should try to upgrade or get SOC microcode from Sun
  14  *      (the microcode is present in Solaris soc driver as well). In that case you need
  15  *      to #define HAVE_SOC_UCODE and format the microcode into soc_asm.c. For the exact
  16  *      format mail me and I will tell you. I cannot offer you the actual microcode though,
  17  *      unless Sun confirms they don't mind.
  18  */
  19
  20 static char *version =
  21         "soc.c:v1.3 9/Feb/99 Jakub Jelinek (jj@ultra.linux.cz), Jirka Hanika (geo@ff.cuni.cz)\n";
  22
  23 #include <linux/module.h>
  24 #include <linux/kernel.h>
  25 #include <linux/types.h>
  26 #include <linux/fcntl.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/ptrace.h>
  29 #include <linux/ioport.h>
  30 #include <linux/in.h>
  31 #include <linux/slab.h>
  32 #include <linux/string.h>
  33 #include <linux/init.h>
  34 #include <linux/bitops.h>
  35 #include <asm/io.h>
  36 #include <asm/dma.h>
  37 #include <linux/errno.h>
  38 #include <asm/byteorder.h>
  39
  40 #include <asm/openprom.h>
  41 #include <asm/oplib.h>
  42 #include <asm/pgtable.h>
  43 #include <asm/irq.h>
  44
  45 /* #define SOCDEBUG */
  46 /* #define HAVE_SOC_UCODE */
  47
  48 #include "fcp_impl.h"
  49 #include "soc.h"
  50 #ifdef HAVE_SOC_UCODE
  51 #include "soc_asm.h"
  52 #endif
  53
  54 #define soc_printk printk ("soc%d: ", s->soc_no); printk
  55
  56 #ifdef SOCDEBUG
  57 #define SOD(x)  soc_printk x;
  58 #else
  59 #define SOD(x)
  60 #endif
  61
  62 #define for_each_soc(s) for (s = socs; s; s = s->next)
  63 struct soc *socs = NULL;
  64
  65 static inline void soc_disable(struct soc *s)
  66 {
  67         sbus_writel(0, s->regs + IMASK);
  68         sbus_writel(SOC_CMD_SOFT_RESET, s->regs + CMD);
  69 }
  70
  71 static inline void soc_enable(struct soc *s)
  72 {
  73         SOD(("enable %08x\n", s->cfg))
  74         sbus_writel(0, s->regs + SAE);
  75         sbus_writel(s->cfg, s->regs + CFG);
  76         sbus_writel(SOC_CMD_RSP_QALL, s->regs + CMD);
  77         SOC_SETIMASK(s, SOC_IMASK_RSP_QALL | SOC_IMASK_SAE);
  78         SOD(("imask %08lx %08lx\n", s->imask, sbus_readl(s->regs + IMAK)));
  79 }
  80
  81 static void soc_reset(fc_channel *fc)
  82 {
  83         soc_port *port = (soc_port *)fc;
  84         struct soc *s = port->s;
  85
  86         /* FIXME */
  87         soc_disable(s);
  88         s->req[0].seqno = 1;
  89         s->req[1].seqno = 1;
  90         s->rsp[0].seqno = 1;
  91         s->rsp[1].seqno = 1;
  92         s->req[0].in = 0;
  93         s->req[1].in = 0;
  94         s->rsp[0].in = 0;
  95         s->rsp[1].in = 0;
  96         s->req[0].out = 0;
  97         s->req[1].out = 0;
  98         s->rsp[0].out = 0;
  99         s->rsp[1].out = 0;
 100
 101         /* FIXME */
 102         soc_enable(s);
 103 }
 104
 105 static inline void soc_solicited (struct soc *s)
 106 {
 107         fc_hdr fchdr;
 108         soc_rsp __iomem *hwrsp;
 109         soc_cq_rsp *sw_cq;
 110         int token;
 111         int status;
 112         fc_channel *fc;
 113
 114         sw_cq = &s->rsp[SOC_SOLICITED_RSP_Q];
 115
 116         if (sw_cq->pool == NULL)
 117                 sw_cq->pool = (soc_req __iomem *)
 118                         (s->xram + xram_get_32low ((xram_p)&sw_cq->hw_cq->address));
 119         sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 120         SOD (("soc_solicited, %d pkts arrived\n", (sw_cq->in-sw_cq->out) & sw_cq->last))
 121         for (;;) {
 122                 hwrsp = (soc_rsp __iomem *)sw_cq->pool + sw_cq->out;
 123                 token = xram_get_32low ((xram_p)&hwrsp->shdr.token);
 124                 status = xram_get_32low ((xram_p)&hwrsp->status);
 125                 fc = (fc_channel *)(&s->port[(token >> 11) & 1]);
 126
 127                 if (status == SOC_OK) {
 128                         fcp_receive_solicited(fc, token >> 12,
 129                                               token & ((1 << 11) - 1),
 130                                               FC_STATUS_OK, NULL);
 131                 } else {
 132                         xram_copy_from(&fchdr, (xram_p)&hwrsp->fchdr, sizeof(fchdr));
 133                         /* We have intentionally defined FC_STATUS_* constants
 134                          * to match SOC_* constants, otherwise we'd have to
 135                          * translate status.
 136                          */
 137                         fcp_receive_solicited(fc, token >> 12,
 138                                               token & ((1 << 11) - 1),
 139                                               status, &fchdr);
 140                 }
 141
 142                 if (++sw_cq->out > sw_cq->last) {
 143                         sw_cq->seqno++;
 144                         sw_cq->out = 0;
 145                 }
 146
 147                 if (sw_cq->out == sw_cq->in) {
 148                         sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 149                         if (sw_cq->out == sw_cq->in) {
 150                                 /* Tell the hardware about it */
 151                                 sbus_writel((sw_cq->out << 24) |
 152                                             (SOC_CMD_RSP_QALL &
 153                                              ~(SOC_CMD_RSP_Q0 << SOC_SOLICITED_RSP_Q)),
 154                                             s->regs + CMD);
 155
 156                                 /* Read it, so that we're sure it has been updated */
 157                                 sbus_readl(s->regs + CMD);
 158                                 sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 159                                 if (sw_cq->out == sw_cq->in)
 160                                         break;
 161                         }
 162                 }
 163         }
 164 }
 165
 166 static inline void soc_request (struct soc *s, u32 cmd)
 167 {
 168         SOC_SETIMASK(s, s->imask & ~(cmd & SOC_CMD_REQ_QALL));
 169         SOD(("imask %08lx %08lx\n", s->imask, sbus_readl(s->regs + IMASK)));
 170
 171         SOD(("Queues available %08x OUT %X %X\n", cmd,
 172              xram_get_8((xram_p)&s->req[0].hw_cq->out),
 173              xram_get_8((xram_p)&s->req[0].hw_cq->out)))
 174         if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) {
 175                 fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port]));
 176                 if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out))
 177                         fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
 178         } else {
 179                 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
 180         }
 181         if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE)
 182                 s->curr_port ^= 1;
 183 }
 184
 185 static inline void soc_unsolicited (struct soc *s)
 186 {
 187         soc_rsp __iomem *hwrsp, *hwrspc;
 188         soc_cq_rsp *sw_cq;
 189         int count;
 190         int status;
 191         int flags;
 192         fc_channel *fc;
 193
 194         sw_cq = &s->rsp[SOC_UNSOLICITED_RSP_Q];
 195         if (sw_cq->pool == NULL)
 196                 sw_cq->pool = (soc_req __iomem *)
 197                         (s->xram + (xram_get_32low ((xram_p)&sw_cq->hw_cq->address)));
 198
 199         sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 200         SOD (("soc_unsolicited, %d packets arrived\n", (sw_cq->in - sw_cq->out) & sw_cq->last))
 201         while (sw_cq->in != sw_cq->out) {
 202                 /* ...real work per entry here... */
 203                 hwrsp = (soc_rsp __iomem *)sw_cq->pool + sw_cq->out;
 204
 205                 hwrspc = NULL;
 206                 flags = xram_get_16 ((xram_p)&hwrsp->shdr.flags);
 207                 count = xram_get_8 ((xram_p)&hwrsp->count);
 208                 fc = (fc_channel *)&s->port[flags & SOC_PORT_B];
 209                 SOD(("FC %08lx fcp_state_change %08lx\n",
 210                      (long)fc, (long)fc->fcp_state_change))
 211
 212                 if (count != 1) {
 213                         /* Ugh, continuation entries */
 214                         u8 in;
 215
 216                         if (count != 2) {
 217                                 printk("%s: Too many continuations entries %d\n",
 218                                        fc->name, count);
 219                                 goto update_out;
 220                         }
 221
 222                         in = sw_cq->in;
 223                         if (in < sw_cq->out) in += sw_cq->last + 1;
 224                         if (in < sw_cq->out + 2) {
 225                                 /* Ask the hardware if they haven't arrived yet. */
 226                                 sbus_writel((sw_cq->out << 24) |
 227                                             (SOC_CMD_RSP_QALL &
 228                                              ~(SOC_CMD_RSP_Q0 << SOC_UNSOLICITED_RSP_Q)),
 229                                             s->regs + CMD);
 230
 231                                 /* Read it, so that we're sure it has been updated */
 232                                 sbus_readl(s->regs + CMD);
 233                                 sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 234                                 in = sw_cq->in;
 235                                 if (in < sw_cq->out)
 236                                         in += sw_cq->last + 1;
 237                                 if (in < sw_cq->out + 2) /* Nothing came, let us wait */
 238                                         return;
 239                         }
 240                         if (sw_cq->out == sw_cq->last)
 241                                 hwrspc = (soc_rsp __iomem *)sw_cq->pool;
 242                         else
 243                                 hwrspc = hwrsp + 1;
 244                 }
 245
 246                 switch (flags & ~SOC_PORT_B) {
 247                 case SOC_STATUS:
 248                         status = xram_get_32low ((xram_p)&hwrsp->status);
 249                         switch (status) {
 250                         case SOC_ONLINE:
 251                                 SOD(("State change to ONLINE\n"));
 252                                 fcp_state_change(fc, FC_STATE_ONLINE);
 253                                 break;
 254                         case SOC_OFFLINE:
 255                                 SOD(("State change to OFFLINE\n"));
 256                                 fcp_state_change(fc, FC_STATE_OFFLINE);
 257                                 break;
 258                         default:
 259                                 printk ("%s: Unknown STATUS no %d\n",
 260                                         fc->name, status);
 261                                 break;
 262                         }
 263                         break;
 264                 case (SOC_UNSOLICITED|SOC_FC_HDR):
 265                         {
 266                                 int r_ctl = xram_get_8 ((xram_p)&hwrsp->fchdr);
 267                                 unsigned len;
 268                                 char buf[64];
 269
 270                                 if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) {
 271                                         len = xram_get_32 ((xram_p)&hwrsp->shdr.bytecnt);
 272                                         if (len < 4 || !hwrspc) {
 273                                                 printk ("%s: Invalid R_CTL %02x "
 274                                                         "continuation entries\n",
 275                                                         fc->name, r_ctl);
 276                                         } else {
 277                                                 if (len > 60)
 278                                                         len = 60;
 279                                                 xram_copy_from (buf, (xram_p)hwrspc,
 280                                                                 (len + 3) & ~3);
 281                                                 if (*(u32 *)buf == LS_DISPLAY) {
 282                                                         int i;
 283
 284                                                         for (i = 4; i < len; i++)
 285                                                                 if (buf[i] == '\n')
 286                                                                         buf[i] = ' ';
 287                                                         buf[len] = 0;
 288                                                         printk ("%s message: %s\n",
 289                                                                 fc->name, buf + 4);
 290                                                 } else {
 291                                                         printk ("%s: Unknown LS_CMD "
 292                                                                 "%02x\n", fc->name,
 293                                                                 buf[0]);
 294                                                 }
 295                                         }
 296                                 } else {
 297                                         printk ("%s: Unsolicited R_CTL %02x "
 298                                                 "not handled\n", fc->name, r_ctl);
 299                                 }
 300                         }
 301                         break;
 302                 default:
 303                         printk ("%s: Unexpected flags %08x\n", fc->name, flags);
 304                         break;
 305                 };
 306 update_out:
 307                 if (++sw_cq->out > sw_cq->last) {
 308                         sw_cq->seqno++;
 309                         sw_cq->out = 0;
 310                 }
 311
 312                 if (hwrspc) {
 313                         if (++sw_cq->out > sw_cq->last) {
 314                                 sw_cq->seqno++;
 315                                 sw_cq->out = 0;
 316                         }
 317                 }
 318
 319                 if (sw_cq->out == sw_cq->in) {
 320                         sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 321                         if (sw_cq->out == sw_cq->in) {
 322                                 /* Tell the hardware about it */
 323                                 sbus_writel((sw_cq->out << 24) |
 324                                             (SOC_CMD_RSP_QALL &
 325                                              ~(SOC_CMD_RSP_Q0 << SOC_UNSOLICITED_RSP_Q)),
 326                                             s->regs + CMD);
 327
 328                                 /* Read it, so that we're sure it has been updated */
 329                                 sbus_readl(s->regs + CMD);
 330                                 sw_cq->in = xram_get_8 ((xram_p)&sw_cq->hw_cq->in);
 331                         }
 332                 }
 333         }
 334 }
 335
 336 static irqreturn_t soc_intr(int irq, void *dev_id)
 337 {
 338         u32 cmd;
 339         unsigned long flags;
 340         register struct soc *s = (struct soc *)dev_id;
 341
 342         spin_lock_irqsave(&s->lock, flags);
 343         cmd = sbus_readl(s->regs + CMD);
 344         for (; (cmd = SOC_INTR (s, cmd)); cmd = sbus_readl(s->regs + CMD)) {
 345                 if (cmd & SOC_CMD_RSP_Q1) soc_unsolicited (s);
 346                 if (cmd & SOC_CMD_RSP_Q0) soc_solicited (s);
 347                 if (cmd & SOC_CMD_REQ_QALL) soc_request (s, cmd);
 348         }
 349         spin_unlock_irqrestore(&s->lock, flags);
 350
 351         return IRQ_HANDLED;
 352 }
 353
 354 #define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port))
 355
 356 static int soc_hw_enque (fc_channel *fc, fcp_cmnd *fcmd)
 357 {
 358         soc_port *port = (soc_port *)fc;
 359         struct soc *s = port->s;
 360         int qno;
 361         soc_cq_req *sw_cq;
 362         int cq_next_in;
 363         soc_req *request;
 364         fc_hdr *fch;
 365         int i;
 366
 367         if (fcmd->proto == TYPE_SCSI_FCP)
 368                 qno = 1;
 369         else
 370                 qno = 0;
 371         SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno))
 372         if (s->imask & (SOC_IMASK_REQ_Q0 << qno)) {
 373                 SOD(("EIO %08x\n", s->imask))
 374                 return -EIO;
 375         }
 376         sw_cq = s->req + qno;
 377         cq_next_in = (sw_cq->in + 1) & sw_cq->last;
 378
 379         if (cq_next_in == sw_cq->out &&
 380             cq_next_in == (sw_cq->out = xram_get_8((xram_p)&sw_cq->hw_cq->out))) {
 381                 SOD(("%d IN %d OUT %d LAST %d\n", qno, sw_cq->in, sw_cq->out, sw_cq->last))
 382                 SOC_SETIMASK(s, s->imask | (SOC_IMASK_REQ_Q0 << qno));
 383                 SOD(("imask %08lx %08lx\n", s->imask, sbus_readl(s->regs + IMASK)));
 384                 /* If queue is full, just say NO */
 385                 return -EBUSY;
 386         }
 387
 388         request = sw_cq->pool + sw_cq->in;
 389         fch = &request->fchdr;
 390
 391         switch (fcmd->proto) {
 392         case TYPE_SCSI_FCP:
 393                 request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token);
 394                 request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd);
 395                 request->data[0].count = sizeof(fcp_cmd);
 396                 request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size;
 397                 request->data[1].count = fc->rsp_size;
 398                 if (fcmd->data) {
 399                         request->shdr.segcnt = 3;
 400                         i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len;
 401                         request->shdr.bytecnt = i;
 402                         request->data[2].base = fcmd->data;
 403                         request->data[2].count = i;
 404                         request->type =
 405                             (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ?
 406                                 SOC_CQTYPE_IO_WRITE : SOC_CQTYPE_IO_READ;
 407                 } else {
 408                         request->shdr.segcnt = 2;
 409                         request->shdr.bytecnt = 0;
 410                         request->data[2].base = 0;
 411                         request->data[2].count = 0;
 412                         request->type = SOC_CQTYPE_SIMPLE;
 413                 }
 414                 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fc->did);
 415                 FILL_FCHDR_SID(fch, fc->sid);
 416                 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP,
 417                                      F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
 418                 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
 419                 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
 420                 fch->param = 0;
 421                 request->shdr.flags = port->flags;
 422                 request->shdr.class = 2;
 423                 break;
 424
 425         case PROTO_OFFLINE:
 426                 memset (request, 0, sizeof(*request));
 427                 request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token);
 428                 request->type = SOC_CQTYPE_OFFLINE;
 429                 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fc->did);
 430                 FILL_FCHDR_SID(fch, fc->sid);
 431                 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP,
 432                                      F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
 433                 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
 434                 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
 435                 request->shdr.flags = port->flags;
 436                 break;
 437
 438         case PROTO_REPORT_AL_MAP:
 439                 /* SOC only supports Point-to-Point topology, no FC-AL, sorry... */
 440                 return -ENOSYS;
 441
 442         default:
 443                 request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token);
 444                 request->shdr.class = 2;
 445                 request->shdr.flags = port->flags;
 446                 memcpy (fch, &fcmd->fch, sizeof(fc_hdr));
 447                 request->data[0].count = fcmd->cmdlen;
 448                 request->data[1].count = fcmd->rsplen;
 449                 request->type = fcmd->class;
 450                 switch (fcmd->class) {
 451                 case FC_CLASS_OUTBOUND:
 452                         request->data[0].base = fcmd->cmd;
 453                         request->data[0].count = fcmd->cmdlen;
 454                         request->type = SOC_CQTYPE_OUTBOUND;
 455                         request->shdr.bytecnt = fcmd->cmdlen;
 456                         request->shdr.segcnt = 1;
 457                         break;
 458                 case FC_CLASS_INBOUND:
 459                         request->data[0].base = fcmd->rsp;
 460                         request->data[0].count = fcmd->rsplen;
 461                         request->type = SOC_CQTYPE_INBOUND;
 462                         request->shdr.bytecnt = 0;
 463                         request->shdr.segcnt = 1;
 464                         break;
 465                 case FC_CLASS_SIMPLE:
 466                         request->data[0].base = fcmd->cmd;
 467                         request->data[1].base = fcmd->rsp;
 468                         request->data[0].count = fcmd->cmdlen;
 469                         request->data[1].count = fcmd->rsplen;
 470                         request->type = SOC_CQTYPE_SIMPLE;
 471                         request->shdr.bytecnt = fcmd->cmdlen;
 472                         request->shdr.segcnt = 2;
 473                         break;
 474                 case FC_CLASS_IO_READ:
 475                 case FC_CLASS_IO_WRITE:
 476                         request->data[0].base = fcmd->cmd;
 477                         request->data[1].base = fcmd->rsp;
 478                         request->data[0].count = fcmd->cmdlen;
 479                         request->data[1].count = fcmd->rsplen;
 480                         request->type =
 481                               (fcmd->class == FC_CLASS_IO_READ) ?
 482                                 SOC_CQTYPE_IO_READ : SOC_CQTYPE_IO_WRITE;
 483                         if (fcmd->data) {
 484                                 request->data[2].base = fcmd->data;
 485                                 request->data[2].count = fcmd->datalen;
 486                                 request->shdr.bytecnt = fcmd->datalen;
 487                                 request->shdr.segcnt = 3;
 488                         } else {
 489                                 request->shdr.bytecnt = 0;
 490                                 request->shdr.segcnt = 2;
 491                         }
 492                         break;
 493                 };
 494                 break;
 495         };
 496
 497         request->count = 1;
 498         request->flags = 0;
 499         request->seqno = sw_cq->seqno;
 500
 501         /* And now tell the SOC about it */
 502
 503         if (++sw_cq->in > sw_cq->last) {
 504                 sw_cq->in = 0;
 505                 sw_cq->seqno++;
 506         }
 507
 508         SOD(("Putting %08x into cmd\n",
 509              SOC_CMD_RSP_QALL | (sw_cq->in << 24) | (SOC_CMD_REQ_Q0 << qno)))
 510
 511         sbus_writel(SOC_CMD_RSP_QALL | (sw_cq->in << 24) | (SOC_CMD_REQ_Q0 << qno),
 512                     s->regs + CMD);
 513
 514         /* Read so that command is completed. */
 515         sbus_readl(s->regs + CMD);
 516
 517         return 0;
 518 }
 519
 520 static inline void soc_download_fw(struct soc *s)
 521 {
 522 #ifdef HAVE_SOC_UCODE
 523         xram_copy_to (s->xram, soc_ucode, sizeof(soc_ucode));
 524         xram_bzero (s->xram + sizeof(soc_ucode), 32768 - sizeof(soc_ucode));
 525 #endif
 526 }
 527
 528 /* Check for what the best SBUS burst we can use happens
 529  * to be on this machine.
 530  */
 531 static inline void soc_init_bursts(struct soc *s, struct sbus_dev *sdev)
 532 {
 533         int bsizes, bsizes_more;
 534
 535         bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff);
 536         bsizes_more = (prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff) & 0xff);
 537         bsizes &= bsizes_more;
 538         if ((bsizes & 0x7f) == 0x7f)
 539                 s->cfg = SOC_CFG_BURST_64;
 540         else if ((bsizes & 0x3f) == 0x3f)
 541                 s->cfg = SOC_CFG_BURST_32;
 542         else if ((bsizes & 0x1f) == 0x1f)
 543                 s->cfg = SOC_CFG_BURST_16;
 544         else
 545                 s->cfg = SOC_CFG_BURST_4;
 546 }
 547
 548 static inline void soc_init(struct sbus_dev *sdev, int no)
 549 {
 550         unsigned char tmp[60];
 551         int propl;
 552         struct soc *s;
 553         static int version_printed = 0;
 554         soc_hw_cq cq[8];
 555         int size, i;
 556         int irq;
 557
 558         s = kzalloc (sizeof (struct soc), GFP_KERNEL);
 559         if (s == NULL)
 560                 return;
 561         spin_lock_init(&s->lock);
 562         s->soc_no = no;
 563
 564         SOD(("socs %08lx soc_intr %08lx soc_hw_enque %08x\n",
 565              (long)socs, (long)soc_intr, (long)soc_hw_enque))
 566         if (version_printed++ == 0)
 567                 printk (version);
 568
 569         s->port[0].fc.module = THIS_MODULE;
 570         s->port[1].fc.module = THIS_MODULE;
 571
 572         s->next = socs;
 573         socs = s;
 574         s->port[0].fc.dev = sdev;
 575         s->port[1].fc.dev = sdev;
 576         s->port[0].s = s;
 577         s->port[1].s = s;
 578
 579         s->port[0].fc.next = &s->port[1].fc;
 580
 581         /* World Wide Name of SOC */
 582         propl = prom_getproperty (sdev->prom_node, "soc-wwn", tmp, sizeof(tmp));
 583         if (propl != sizeof (fc_wwn)) {
 584                 s->wwn.naaid = NAAID_IEEE;
 585                 s->wwn.lo = 0x12345678;
 586         } else
 587                 memcpy (&s->wwn, tmp, sizeof (fc_wwn));
 588
 589         propl = prom_getproperty (sdev->prom_node, "port-wwns", tmp, sizeof(tmp));
 590         if (propl != 2 * sizeof (fc_wwn)) {
 591                 s->port[0].fc.wwn_nport.naaid = NAAID_IEEE_EXT;
 592                 s->port[0].fc.wwn_nport.hi = s->wwn.hi;
 593                 s->port[0].fc.wwn_nport.lo = s->wwn.lo;
 594                 s->port[1].fc.wwn_nport.naaid = NAAID_IEEE_EXT;
 595                 s->port[1].fc.wwn_nport.nportid = 1;
 596                 s->port[1].fc.wwn_nport.hi = s->wwn.hi;
 597                 s->port[1].fc.wwn_nport.lo = s->wwn.lo;
 598         } else {
 599                 memcpy (&s->port[0].fc.wwn_nport, tmp, sizeof (fc_wwn));
 600                 memcpy (&s->port[1].fc.wwn_nport, tmp + sizeof (fc_wwn), sizeof (fc_wwn));
 601         }
 602         memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
 603         memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
 604         SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n",
 605              *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo,
 606              *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo,
 607              *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo))
 608
 609         s->port[0].fc.sid = 1;
 610         s->port[1].fc.sid = 17;
 611         s->port[0].fc.did = 2;
 612         s->port[1].fc.did = 18;
 613
 614         s->port[0].fc.reset = soc_reset;
 615         s->port[1].fc.reset = soc_reset;
 616
 617         if (sdev->num_registers == 1) {
 618                 /* Probably SunFire onboard SOC */
 619                 s->xram = sbus_ioremap(&sdev->resource[0], 0,
 620                                        0x10000UL, "soc xram");
 621                 s->regs = sbus_ioremap(&sdev->resource[0], 0x10000UL,
 622                                        0x10UL, "soc regs");
 623         } else {
 624                 /* Probably SOC sbus card */
 625                 s->xram = sbus_ioremap(&sdev->resource[1], 0,
 626                                        sdev->reg_addrs[1].reg_size, "soc xram");
 627                 s->regs = sbus_ioremap(&sdev->resource[2], 0,
 628                                        sdev->reg_addrs[2].reg_size, "soc regs");
 629         }
 630
 631         soc_init_bursts(s, sdev);
 632
 633         SOD(("Disabling SOC\n"))
 634
 635         soc_disable (s);
 636
 637         irq = sdev->irqs[0];
 638
 639         if (request_irq (irq, soc_intr, IRQF_SHARED, "SOC", (void *)s)) {
 640                 soc_printk ("Cannot order irq %d to go\n", irq);
 641                 socs = s->next;
 642                 return;
 643         }
 644
 645         SOD(("SOC uses IRQ %d\n", irq))
 646
 647         s->port[0].fc.irq = irq;
 648         s->port[1].fc.irq = irq;
 649
 650         sprintf (s->port[0].fc.name, "soc%d port A", no);
 651         sprintf (s->port[1].fc.name, "soc%d port B", no);
 652         s->port[0].flags = SOC_FC_HDR | SOC_PORT_A;
 653         s->port[1].flags = SOC_FC_HDR | SOC_PORT_B;
 654         s->port[1].mask = (1 << 11);
 655
 656         s->port[0].fc.hw_enque = soc_hw_enque;
 657         s->port[1].fc.hw_enque = soc_hw_enque;
 658
 659         soc_download_fw (s);
 660
 661         SOD(("Downloaded firmware\n"))
 662
 663         /* Now setup xram circular queues */
 664         memset (cq, 0, sizeof(cq));
 665
 666         size = (SOC_CQ_REQ0_SIZE + SOC_CQ_REQ1_SIZE) * sizeof(soc_req);
 667         s->req_cpu = sbus_alloc_consistent(sdev, size, &s->req_dvma);
 668         s->req[0].pool = s->req_cpu;
 669         cq[0].address = s->req_dvma;
 670         s->req[1].pool = s->req[0].pool + SOC_CQ_REQ0_SIZE;
 671
 672         s->req[0].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_REQ_OFFSET);
 673         s->req[1].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_REQ_OFFSET + sizeof(soc_hw_cq));
 674         s->rsp[0].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_RSP_OFFSET);
 675         s->rsp[1].hw_cq = (soc_hw_cq __iomem *)(s->xram + SOC_CQ_RSP_OFFSET + sizeof(soc_hw_cq));
 676
 677         cq[1].address = cq[0].address + (SOC_CQ_REQ0_SIZE * sizeof(soc_req));
 678         cq[4].address = 1;
 679         cq[5].address = 1;
 680         cq[0].last = SOC_CQ_REQ0_SIZE - 1;
 681         cq[1].last = SOC_CQ_REQ1_SIZE - 1;
 682         cq[4].last = SOC_CQ_RSP0_SIZE - 1;
 683         cq[5].last = SOC_CQ_RSP1_SIZE - 1;
 684         for (i = 0; i < 8; i++)
 685                 cq[i].seqno = 1;
 686
 687         s->req[0].last = SOC_CQ_REQ0_SIZE - 1;
 688         s->req[1].last = SOC_CQ_REQ1_SIZE - 1;
 689         s->rsp[0].last = SOC_CQ_RSP0_SIZE - 1;
 690         s->rsp[1].last = SOC_CQ_RSP1_SIZE - 1;
 691
 692         s->req[0].seqno = 1;
 693         s->req[1].seqno = 1;
 694         s->rsp[0].seqno = 1;
 695         s->rsp[1].seqno = 1;
 696
 697         xram_copy_to (s->xram + SOC_CQ_REQ_OFFSET, cq, sizeof(cq));
 698
 699         /* Make our sw copy of SOC service parameters */
 700         xram_copy_from (s->serv_params, s->xram + 0x140, sizeof (s->serv_params));
 701
 702         s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params;
 703         s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
 704         s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params;
 705         s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
 706
 707         soc_enable (s);
 708
 709         SOD(("Enabled SOC\n"))
 710 }
 711
 712 static int __init soc_probe(void)
 713 {
 714         struct sbus_bus *sbus;
 715         struct sbus_dev *sdev = NULL;
 716         struct soc *s;
 717         int cards = 0;
 718
 719         for_each_sbus(sbus) {
 720                 for_each_sbusdev(sdev, sbus) {
 721                         if(!strcmp(sdev->prom_name, "SUNW,soc")) {
 722                                 soc_init(sdev, cards);
 723                                 cards++;
 724                         }
 725                 }
 726         }
 727         if (!cards) return -EIO;
 728
 729         for_each_soc(s)
 730                 if (s->next)
 731                         s->port[1].fc.next = &s->next->port[0].fc;
 732         fcp_init (&socs->port[0].fc);
 733         return 0;
 734 }
 735
 736 static void __exit soc_cleanup(void)
 737 {
 738         struct soc *s;
 739         int irq;
 740         struct sbus_dev *sdev;
 741
 742         for_each_soc(s) {
 743                 irq = s->port[0].fc.irq;
 744                 free_irq (irq, s);
 745
 746                 fcp_release(&(s->port[0].fc), 2);
 747
 748                 sdev = s->port[0].fc.dev;
 749                 if (sdev->num_registers == 1) {
 750                         sbus_iounmap(s->xram, 0x10000UL);
 751                         sbus_iounmap(s->regs, 0x10UL);
 752                 } else {
 753                         sbus_iounmap(s->xram, sdev->reg_addrs[1].reg_size);
 754                         sbus_iounmap(s->regs, sdev->reg_addrs[2].reg_size);
 755                 }
 756                 sbus_free_consistent(sdev,
 757                                      (SOC_CQ_REQ0_SIZE+SOC_CQ_REQ1_SIZE)*sizeof(soc_req),
 758                                      s->req_cpu, s->req_dvma);
 759         }
 760 }
 761
 762 module_init(soc_probe);
 763 module_exit(soc_cleanup);
 764 MODULE_LICENSE("GPL");