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