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 15static 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 <asm/system.h> 31#include <asm/bitops.h> 32#include <asm/io.h> 33#include <asm/dma.h> 34#include <linux/errno.h> 35#include <asm/byteorder.h> 36 37#include <asm/openprom.h> 38#include <asm/oplib.h> 39#include <asm/auxio.h> 40#include <asm/pgtable.h> 41#include <asm/irq.h> 42 43/* #define SOCALDEBUG */ 44/* #define HAVE_SOCAL_UCODE */ 45/* #define USE_64BIT_MODE */ 46 47#include "fcp_impl.h" 48#include "socal.h" 49#ifdef HAVE_SOCAL_UCODE 50#include "socal_asm.h" 51#endif 52 53#define socal_printk printk ("socal%d: ", s->socal_no); printk 54 55#ifdef SOCALDEBUG 56#define SOD(x) socal_printk x; 57#else 58#define SOD(x) 59#endif 60 61#define for_each_socal(s) for (s = socals; s; s = s->next) 62struct socal *socals = NULL; 63 64static void socal_copy_from_xram(void *d, unsigned long xram, long size) 65{ 66 u32 *dp = (u32 *) d; 67 while (size) { 68 *dp++ = sbus_readl(xram); 69 xram += sizeof(u32); 70 size -= sizeof(u32); 71 } 72} 73 74static void socal_copy_to_xram(unsigned long xram, void *s, long size) 75{ 76 u32 *sp = (u32 *) s; 77 while (size) { 78 u32 val = *sp++; 79 sbus_writel(val, xram); 80 xram += sizeof(u32); 81 size -= sizeof(u32); 82 } 83} 84 85#ifdef HAVE_SOCAL_UCODE 86static void socal_bzero(unsigned long xram, int size) 87{ 88 while (size) { 89 sbus_writel(0, xram); 90 xram += sizeof(u32); 91 size -= sizeof(u32); 92 } 93} 94#endif 95 96static inline void socal_disable(struct socal *s) 97{ 98 sbus_writel(0, s->regs + IMASK); 99 sbus_writel(SOCAL_CMD_SOFT_RESET, s->regs + CMD); 100} 101 102static inline void socal_enable(struct socal *s) 103{ 104 SOD(("enable %08x\n", s->cfg)) 105 sbus_writel(0, s->regs + SAE); 106 sbus_writel(s->cfg, s->regs + CFG); 107 sbus_writel(SOCAL_CMD_RSP_QALL, s->regs + CMD); 108 SOCAL_SETIMASK(s, SOCAL_IMASK_RSP_QALL | SOCAL_IMASK_SAE); 109 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK))); 110} 111 112static void socal_reset(fc_channel *fc) 113{ 114 socal_port *port = (socal_port *)fc; 115 struct socal *s = port->s; 116 117 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 socal_enable(s); 132} 133 134static void inline socal_solicited(struct socal *s, unsigned long qno) 135{ 136 socal_rsp *hwrsp; 137 socal_cq *sw_cq; 138 int token; 139 int status; 140 fc_channel *fc; 141 142 sw_cq = &s->rsp[qno]; 143 144 /* Finally an improvement against old SOC :) */ 145 sw_cq->in = sbus_readb(s->regs + RESP + qno); 146 SOD (("socal_solicited, %d packets arrived\n", 147 (sw_cq->in - sw_cq->out) & sw_cq->last)) 148 for (;;) { 149 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out; 150 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out)) 151 152 153 token = hwrsp->shdr.token; 154 status = hwrsp->status; 155 fc = (fc_channel *)(&s->port[(token >> 11) & 1]); 156 157 SOD(("Solicited token %08x status %08x\n", token, status)) 158 if (status == SOCAL_OK) { 159 fcp_receive_solicited(fc, token >> 12, 160 token & ((1 << 11) - 1), 161 FC_STATUS_OK, NULL); 162 } else { 163 /* We have intentionally defined FC_STATUS_* constants 164 * to match SOCAL_* constants, otherwise we'd have to 165 * translate status. 166 */ 167 fcp_receive_solicited(fc, token >> 12, 168 token & ((1 << 11) - 1), status, &hwrsp->fchdr); 169 } 170 171 if (++sw_cq->out > sw_cq->last) { 172 sw_cq->seqno++; 173 sw_cq->out = 0; 174 } 175 176 if (sw_cq->out == sw_cq->in) { 177 sw_cq->in = sbus_readb(s->regs + RESP + qno); 178 if (sw_cq->out == sw_cq->in) { 179 /* Tell the hardware about it */ 180 sbus_writel((sw_cq->out << 24) | 181 (SOCAL_CMD_RSP_QALL & 182 ~(SOCAL_CMD_RSP_Q0 << qno)), 183 s->regs + CMD); 184 185 /* Read it, so that we're sure it has been updated */ 186 sbus_readl(s->regs + CMD); 187 sw_cq->in = sbus_readb(s->regs + RESP + qno); 188 if (sw_cq->out == sw_cq->in) 189 break; 190 } 191 } 192 } 193} 194 195static void inline socal_request (struct socal *s, u32 cmd) 196{ 197 SOCAL_SETIMASK(s, s->imask & ~(cmd & SOCAL_CMD_REQ_QALL)); 198 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK))); 199 200 SOD(("Queues available %08x OUT %X\n", cmd, s->regs->reqpr[0])) 201 if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) { 202 fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port])); 203 if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out)) 204 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port])); 205 } else { 206 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port])); 207 } 208 if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE) 209 s->curr_port ^= 1; 210} 211 212static void inline socal_unsolicited (struct socal *s, unsigned long qno) 213{ 214 socal_rsp *hwrsp, *hwrspc; 215 socal_cq *sw_cq; 216 int count; 217 int status; 218 int flags; 219 fc_channel *fc; 220 221 sw_cq = &s->rsp[qno]; 222 223 sw_cq->in = sbus_readb(s->regs + RESP + qno); 224 SOD (("socal_unsolicited, %d packets arrived, in %d\n", 225 (sw_cq->in - sw_cq->out) & sw_cq->last, sw_cq->in)) 226 while (sw_cq->in != sw_cq->out) { 227 /* ...real work per entry here... */ 228 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out; 229 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out)) 230 231 232 hwrspc = NULL; 233 flags = hwrsp->shdr.flags; 234 count = hwrsp->count; 235 fc = (fc_channel *)&s->port[flags & SOCAL_PORT_B]; 236 SOD(("FC %08lx\n", (long)fc)) 237 238 if (count != 1) { 239 /* Ugh, continuation entries */ 240 u8 in; 241 242 if (count != 2) { 243 printk("%s: Too many continuations entries %d\n", 244 fc->name, count); 245 goto update_out; 246 } 247 248 in = sw_cq->in; 249 if (in < sw_cq->out) 250 in += sw_cq->last + 1; 251 if (in < sw_cq->out + 2) { 252 /* Ask the hardware if they haven't arrived yet. */ 253 sbus_writel((sw_cq->out << 24) | 254 (SOCAL_CMD_RSP_QALL & 255 ~(SOCAL_CMD_RSP_Q0 << qno)), 256 s->regs + CMD); 257 258 /* Read it, so that we're sure it has been updated */ 259 sbus_readl(s->regs + CMD); 260 sw_cq->in = sbus_readb(s->regs + RESP + qno); 261 in = sw_cq->in; 262 if (in < sw_cq->out) 263 in += sw_cq->last + 1; 264 if (in < sw_cq->out + 2) /* Nothing came, let us wait */ 265 return; 266 } 267 if (sw_cq->out == sw_cq->last) 268 hwrspc = (socal_rsp *)sw_cq->pool; 269 else 270 hwrspc = hwrsp + 1; 271 } 272 273 switch (flags & ~SOCAL_PORT_B) { 274 case SOCAL_STATUS: 275 status = hwrsp->status; 276 switch (status) { 277 case SOCAL_ONLINE: 278 SOD(("State change to ONLINE\n")); 279 fcp_state_change(fc, FC_STATE_ONLINE); 280 break; 281 case SOCAL_ONLINE_LOOP: 282 SOD(("State change to ONLINE_LOOP\n")); 283 fcp_state_change(fc, FC_STATE_ONLINE); 284 break; 285 case SOCAL_OFFLINE: 286 SOD(("State change to OFFLINE\n")); 287 fcp_state_change(fc, FC_STATE_OFFLINE); 288 break; 289 default: 290 printk ("%s: Unknown STATUS no %d\n", 291 fc->name, status); 292 break; 293 }; 294 295 break; 296 case (SOCAL_UNSOLICITED|SOCAL_FC_HDR): 297 { 298 int r_ctl = *((u8 *)&hwrsp->fchdr); 299 unsigned len; 300 301 if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) { 302 len = hwrsp->shdr.bytecnt; 303 if (len < 4 || !hwrspc) { 304 printk ("%s: Invalid R_CTL %02x " 305 "continuation entries\n", 306 fc->name, r_ctl); 307 } else { 308 if (len > 60) 309 len = 60; 310 if (*(u32 *)hwrspc == LS_DISPLAY) { 311 int i; 312 313 for (i = 4; i < len; i++) 314 if (((u8 *)hwrspc)[i] == '\n') 315 ((u8 *)hwrspc)[i] = ' '; 316 ((u8 *)hwrspc)[len] = 0; 317 printk ("%s message: %s\n", 318 fc->name, ((u8 *)hwrspc) + 4); 319 } else { 320 printk ("%s: Unknown LS_CMD " 321 "%08x\n", fc->name, 322 *(u32 *)hwrspc); 323 } 324 } 325 } else { 326 printk ("%s: Unsolicited R_CTL %02x " 327 "not handled\n", fc->name, r_ctl); 328 } 329 } 330 break; 331 default: 332 printk ("%s: Unexpected flags %08x\n", fc->name, flags); 333 break; 334 }; 335update_out: 336 if (++sw_cq->out > sw_cq->last) { 337 sw_cq->seqno++; 338 sw_cq->out = 0; 339 } 340 341 if (hwrspc) { 342 if (++sw_cq->out > sw_cq->last) { 343 sw_cq->seqno++; 344 sw_cq->out = 0; 345 } 346 } 347 348 if (sw_cq->out == sw_cq->in) { 349 sw_cq->in = sbus_readb(s->regs + RESP + qno); 350 if (sw_cq->out == sw_cq->in) { 351 /* Tell the hardware about it */ 352 sbus_writel((sw_cq->out << 24) | 353 (SOCAL_CMD_RSP_QALL & 354 ~(SOCAL_CMD_RSP_Q0 << qno)), 355 s->regs + CMD); 356 357 /* Read it, so that we're sure it has been updated */ 358 sbus_readl(s->regs + CMD); 359 sw_cq->in = sbus_readb(s->regs + RESP + qno); 360 } 361 } 362 } 363} 364 365static void socal_intr(int irq, void *dev_id, struct pt_regs *regs) 366{ 367 u32 cmd; 368 unsigned long flags; 369 register struct socal *s = (struct socal *)dev_id; 370 371 spin_lock_irqsave(&io_request_lock, flags); 372 cmd = sbus_readl(s->regs + CMD); 373 for (; (cmd = SOCAL_INTR (s, cmd)); cmd = sbus_readl(s->regs + CMD)) { 374#ifdef SOCALDEBUG 375 static int cnt = 0; 376 if (cnt++ < 50) 377 printk("soc_intr %08x\n", cmd); 378#endif 379 if (cmd & SOCAL_CMD_RSP_Q2) 380 socal_unsolicited (s, SOCAL_UNSOLICITED_RSP_Q); 381 if (cmd & SOCAL_CMD_RSP_Q1) 382 socal_unsolicited (s, SOCAL_SOLICITED_BAD_RSP_Q); 383 if (cmd & SOCAL_CMD_RSP_Q0) 384 socal_solicited (s, SOCAL_SOLICITED_RSP_Q); 385 if (cmd & SOCAL_CMD_REQ_QALL) 386 socal_request (s, cmd); 387 } 388 spin_unlock_irqrestore(&io_request_lock, flags); 389} 390 391#define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port)) 392 393static int socal_hw_enque (fc_channel *fc, fcp_cmnd *fcmd) 394{ 395 socal_port *port = (socal_port *)fc; 396 struct socal *s = port->s; 397 unsigned long qno; 398 socal_cq *sw_cq; 399 int cq_next_in; 400 socal_req *request; 401 fc_hdr *fch; 402 int i; 403 404 if (fcmd->proto == TYPE_SCSI_FCP) 405 qno = 1; 406 else 407 qno = 0; 408 SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno)) 409 if (s->imask & (SOCAL_IMASK_REQ_Q0 << qno)) { 410 SOD(("EIO %08x\n", s->imask)) 411 return -EIO; 412 } 413 sw_cq = s->req + qno; 414 cq_next_in = (sw_cq->in + 1) & sw_cq->last; 415 416 if (cq_next_in == sw_cq->out && 417 cq_next_in == (sw_cq->out = sbus_readb(s->regs + REQP + qno))) { 418 SOD(("%d IN %d OUT %d LAST %d\n", 419 qno, sw_cq->in, 420 sw_cq->out, sw_cq->last)) 421 SOCAL_SETIMASK(s, s->imask | (SOCAL_IMASK_REQ_Q0 << qno)); 422 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK))); 423 424 /* If queue is full, just say NO. */ 425 return -EBUSY; 426 } 427 428 request = sw_cq->pool + sw_cq->in; 429 fch = &request->fchdr; 430 431 switch (fcmd->proto) { 432 case TYPE_SCSI_FCP: 433 request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token); 434 request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd); 435 request->data[0].count = sizeof(fcp_cmd); 436 request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size; 437 request->data[1].count = fc->rsp_size; 438 if (fcmd->data) { 439 request->shdr.segcnt = 3; 440 i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len; 441 request->shdr.bytecnt = i; 442 request->data[2].base = fcmd->data; 443 request->data[2].count = i; 444 request->type = (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ? 445 SOCAL_CQTYPE_IO_WRITE : SOCAL_CQTYPE_IO_READ; 446 } else { 447 request->shdr.segcnt = 2; 448 request->shdr.bytecnt = 0; 449 request->data[2].base = 0; 450 request->data[2].count = 0; 451 request->type = SOCAL_CQTYPE_SIMPLE; 452 } 453 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did); 454 FILL_FCHDR_SID(fch, fc->sid); 455 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); 456 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); 457 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); 458 fch->param = 0; 459 request->shdr.flags = port->flags; 460 request->shdr.class = fc->posmap ? 3 : 2; 461 break; 462 463 case PROTO_OFFLINE: 464 memset (request, 0, sizeof(*request)); 465 request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token); 466 request->type = SOCAL_CQTYPE_OFFLINE; 467 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did); 468 FILL_FCHDR_SID(fch, fc->sid); 469 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE); 470 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0); 471 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff); 472 request->shdr.flags = port->flags; 473 break; 474 475 case PROTO_REPORT_AL_MAP: 476 memset (request, 0, sizeof(*request)); 477 request->shdr.token = TOKEN(PROTO_REPORT_AL_MAP, port->mask, fcmd->token); 478 request->type = SOCAL_CQTYPE_REPORT_MAP; 479 request->shdr.flags = port->flags; 480 request->shdr.segcnt = 1; 481 request->shdr.bytecnt = sizeof(fc_al_posmap); 482 request->data[0].base = fcmd->cmd; 483 request->data[0].count = sizeof(fc_al_posmap); 484 break; 485 486 default: 487 request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token); 488 request->shdr.class = fc->posmap ? 3 : 2; 489 request->shdr.flags = port->flags; 490 memcpy (fch, &fcmd->fch, sizeof(fc_hdr)); 491 request->data[0].count = fcmd->cmdlen; 492 request->data[1].count = fcmd->rsplen; 493 request->type = fcmd->class; 494 switch (fcmd->class) { 495 case FC_CLASS_OUTBOUND: 496 request->data[0].base = fcmd->cmd; 497 request->data[0].count = fcmd->cmdlen; 498 request->type = SOCAL_CQTYPE_OUTBOUND; 499 request->shdr.bytecnt = fcmd->cmdlen; 500 request->shdr.segcnt = 1; 501 break; 502 case FC_CLASS_INBOUND: 503 request->data[0].base = fcmd->rsp; 504 request->data[0].count = fcmd->rsplen; 505 request->type = SOCAL_CQTYPE_INBOUND; 506 request->shdr.bytecnt = 0; 507 request->shdr.segcnt = 1; 508 break; 509 case FC_CLASS_SIMPLE: 510 request->data[0].base = fcmd->cmd; 511 request->data[1].base = fcmd->rsp; 512 request->data[0].count = fcmd->cmdlen; 513 request->data[1].count = fcmd->rsplen; 514 request->type = SOCAL_CQTYPE_SIMPLE; 515 request->shdr.bytecnt = fcmd->cmdlen; 516 request->shdr.segcnt = 2; 517 break; 518 case FC_CLASS_IO_READ: 519 case FC_CLASS_IO_WRITE: 520 request->data[0].base = fcmd->cmd; 521 request->data[1].base = fcmd->rsp; 522 request->data[0].count = fcmd->cmdlen; 523 request->data[1].count = fcmd->rsplen; 524 request->type = (fcmd->class == FC_CLASS_IO_READ) ? SOCAL_CQTYPE_IO_READ : SOCAL_CQTYPE_IO_WRITE; 525 if (fcmd->data) { 526 request->data[2].base = fcmd->data; 527 request->data[2].count = fcmd->datalen; 528 request->shdr.bytecnt = fcmd->datalen; 529 request->shdr.segcnt = 3; 530 } else { 531 request->shdr.bytecnt = 0; 532 request->shdr.segcnt = 2; 533 } 534 break; 535 } 536 break; 537 } 538 539 request->count = 1; 540 request->flags = 0; 541 request->seqno = sw_cq->seqno; 542 543 SOD(("queueing token %08x\n", request->shdr.token)) 544 545 /* And now tell the SOCAL about it */ 546 547 if (++sw_cq->in > sw_cq->last) { 548 sw_cq->in = 0; 549 sw_cq->seqno++; 550 } 551 552 SOD(("Putting %08x into cmd\n", SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno))) 553 554 sbus_writel(SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno), 555 s->regs + CMD); 556 557 /* Read so that command is completed */ 558 sbus_readl(s->regs + CMD); 559 560 return 0; 561} 562 563static inline void socal_download_fw(struct socal *s) 564{ 565#ifdef HAVE_SOCAL_UCODE 566 SOD(("Loading %ld bytes from %p to %p\n", sizeof(socal_ucode), socal_ucode, s->xram)) 567 socal_copy_to_xram(s->xram, socal_ucode, sizeof(socal_ucode)); 568 SOD(("Clearing the rest of memory\n")) 569 socal_bzero (s->xram + sizeof(socal_ucode), 65536 - sizeof(socal_ucode)); 570 SOD(("Done\n")) 571#endif 572} 573 574/* Check for what the best SBUS burst we can use happens 575 * to be on this machine. 576 */ 577static inline void socal_init_bursts(struct socal *s, struct sbus_dev *sdev) 578{ 579 int bsizes, bsizes_more; 580 u32 cfg; 581 582 bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff); 583 bsizes_more = (prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff) & 0xff); 584 bsizes &= bsizes_more; 585#ifdef USE_64BIT_MODE 586#ifdef __sparc_v9__ 587 mmu_set_sbus64(sdev, bsizes >> 16); 588#endif 589#endif 590 if ((bsizes & 0x7f) == 0x7f) 591 cfg = SOCAL_CFG_BURST_64; 592 else if ((bsizes & 0x3f) == 0x3f) 593 cfg = SOCAL_CFG_BURST_32; 594 else if ((bsizes & 0x1f) == 0x1f) 595 cfg = SOCAL_CFG_BURST_16; 596 else 597 cfg = SOCAL_CFG_BURST_4; 598#ifdef USE_64BIT_MODE 599#ifdef __sparc_v9__ 600 /* What is BURST_128? -jj */ 601 if ((bsizes & 0x780000) == 0x780000) 602 cfg |= (SOCAL_CFG_BURST_64 << 8) | SOCAL_CFG_SBUS_ENHANCED; 603 else if ((bsizes & 0x380000) == 0x380000) 604 cfg |= (SOCAL_CFG_BURST_32 << 8) | SOCAL_CFG_SBUS_ENHANCED; 605 else if ((bsizes & 0x180000) == 0x180000) 606 cfg |= (SOCAL_CFG_BURST_16 << 8) | SOCAL_CFG_SBUS_ENHANCED; 607 else 608 cfg |= (SOCAL_CFG_BURST_8 << 8) | SOCAL_CFG_SBUS_ENHANCED; 609#endif 610#endif 611 s->cfg = cfg; 612} 613 614static inline void socal_init(struct sbus_dev *sdev, int no) 615{ 616 unsigned char tmp[60]; 617 int propl; 618 struct socal *s; 619 static unsigned version_printed = 0; 620 socal_hw_cq cq[8]; 621 int size, i; 622 int irq, node; 623 624 s = kmalloc (sizeof (struct socal), GFP_KERNEL); 625 if (!s) return; 626 memset (s, 0, sizeof(struct socal)); 627 s->socal_no = no; 628 629 SOD(("socals %08lx socal_intr %08lx socal_hw_enque %08lx\n", 630 (long)socals, (long)socal_intr, (long)socal_hw_enque)) 631 if (version_printed++ == 0) 632 printk (version); 633 634 s->port[0].fc.module = THIS_MODULE; 635 s->port[1].fc.module = THIS_MODULE; 636 637 s->next = socals; 638 socals = s; 639 s->port[0].fc.dev = sdev; 640 s->port[1].fc.dev = sdev; 641 s->port[0].s = s; 642 s->port[1].s = s; 643 644 s->port[0].fc.next = &s->port[1].fc; 645 646 /* World Wide Name of SOCAL */ 647 propl = prom_getproperty (sdev->prom_node, "wwn", tmp, sizeof(tmp)); 648 if (propl != sizeof (fc_wwn)) { 649 s->wwn.naaid = NAAID_IEEE_REG; 650 s->wwn.nportid = 0x123; 651 s->wwn.hi = 0x1234; 652 s->wwn.lo = 0x12345678; 653 } else 654 memcpy (&s->wwn, tmp, sizeof (fc_wwn)); 655 656 memcpy (&s->port[0].fc.wwn_nport, &s->wwn, sizeof (fc_wwn)); 657 s->port[0].fc.wwn_nport.lo++; 658 memcpy (&s->port[1].fc.wwn_nport, &s->wwn, sizeof (fc_wwn)); 659 s->port[1].fc.wwn_nport.lo+=2; 660 661 node = prom_getchild (sdev->prom_node); 662 while (node && (node = prom_searchsiblings (node, "sf"))) { 663 int port; 664 665 port = prom_getintdefault(node, "port#", -1); 666 switch (port) { 667 case 0: 668 case 1: 669 if (prom_getproplen(node, "port-wwn") == sizeof (fc_wwn)) 670 prom_getproperty (node, "port-wwn", 671 (char *)&s->port[port].fc.wwn_nport, 672 sizeof (fc_wwn)); 673 break; 674 default: 675 break; 676 }; 677 678 node = prom_getsibling(node); 679 } 680 681 memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn)); 682 memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn)); 683 SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n", 684 *(u32 *)&s->port[0].fc.wwn_node, s->port[0].fc.wwn_node.lo, 685 *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo, 686 *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo)) 687 688 s->port[0].fc.sid = 1; 689 s->port[1].fc.sid = 17; 690 s->port[0].fc.did = 2; 691 s->port[1].fc.did = 18; 692 693 s->port[0].fc.reset = socal_reset; 694 s->port[1].fc.reset = socal_reset; 695 696 if (sdev->num_registers == 1) { 697 s->eeprom = sbus_ioremap(&sdev->resource[0], 0, 698 sdev->reg_addrs[0].reg_size, "socal xram"); 699 if (sdev->reg_addrs[0].reg_size > 0x20000) 700 s->xram = s->eeprom + 0x10000UL; 701 else 702 s->xram = s->eeprom; 703 s->regs = (s->xram + 0x10000UL); 704 } else { 705 /* E.g. starfire presents 3 registers for SOCAL */ 706 s->xram = sbus_ioremap(&sdev->resource[1], 0, 707 sdev->reg_addrs[1].reg_size, "socal xram"); 708 s->regs = sbus_ioremap(&sdev->resource[2], 0, 709 sdev->reg_addrs[2].reg_size, "socal regs"); 710 } 711 712 socal_init_bursts(s, sdev); 713 714 SOD(("Disabling SOCAL\n")) 715 716 socal_disable (s); 717 718 irq = sdev->irqs[0]; 719 720 if (request_irq (irq, socal_intr, SA_SHIRQ, "SOCAL", (void *)s)) { 721 socal_printk ("Cannot order irq %d to go\n", irq); 722 socals = s->next; 723 return; 724 } 725 726 SOD(("SOCAL uses IRQ %s\n", __irq_itoa(irq))) 727 728 s->port[0].fc.irq = irq; 729 s->port[1].fc.irq = irq; 730 731 sprintf (s->port[0].fc.name, "socal%d port A", no); 732 sprintf (s->port[1].fc.name, "socal%d port B", no); 733 s->port[0].flags = SOCAL_FC_HDR | SOCAL_PORT_A; 734 s->port[1].flags = SOCAL_FC_HDR | SOCAL_PORT_B; 735 s->port[1].mask = (1 << 11); 736 737 s->port[0].fc.hw_enque = socal_hw_enque; 738 s->port[1].fc.hw_enque = socal_hw_enque; 739 740 socal_download_fw (s); 741 742 SOD(("Downloaded firmware\n")) 743 744 /* Now setup xram circular queues */ 745 memset (cq, 0, sizeof(cq)); 746 747 size = (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE + 748 SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE + 749 SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req); 750 s->req_cpu = sbus_alloc_consistent(sdev, size, &s->req_dvma); 751 s->req[0].pool = s->req_cpu; 752 cq[0].address = s->req_dvma; 753 s->req[1].pool = s->req[0].pool + SOCAL_CQ_REQ0_SIZE; 754 s->rsp[0].pool = s->req[1].pool + SOCAL_CQ_REQ1_SIZE; 755 s->rsp[1].pool = s->rsp[0].pool + SOCAL_CQ_RSP0_SIZE; 756 s->rsp[2].pool = s->rsp[1].pool + SOCAL_CQ_RSP1_SIZE; 757 758 s->req[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET); 759 s->req[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET + sizeof(socal_hw_cq)); 760 s->rsp[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET); 761 s->rsp[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + sizeof(socal_hw_cq)); 762 s->rsp[2].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + 2 * sizeof(socal_hw_cq)); 763 764 cq[1].address = cq[0].address + (SOCAL_CQ_REQ0_SIZE * sizeof(socal_req)); 765 cq[4].address = cq[1].address + (SOCAL_CQ_REQ1_SIZE * sizeof(socal_req)); 766 cq[5].address = cq[4].address + (SOCAL_CQ_RSP0_SIZE * sizeof(socal_req)); 767 cq[6].address = cq[5].address + (SOCAL_CQ_RSP1_SIZE * sizeof(socal_req)); 768 769 cq[0].last = SOCAL_CQ_REQ0_SIZE - 1; 770 cq[1].last = SOCAL_CQ_REQ1_SIZE - 1; 771 cq[4].last = SOCAL_CQ_RSP0_SIZE - 1; 772 cq[5].last = SOCAL_CQ_RSP1_SIZE - 1; 773 cq[6].last = SOCAL_CQ_RSP2_SIZE - 1; 774 for (i = 0; i < 8; i++) 775 cq[i].seqno = 1; 776 777 s->req[0].last = SOCAL_CQ_REQ0_SIZE - 1; 778 s->req[1].last = SOCAL_CQ_REQ1_SIZE - 1; 779 s->rsp[0].last = SOCAL_CQ_RSP0_SIZE - 1; 780 s->rsp[1].last = SOCAL_CQ_RSP1_SIZE - 1; 781 s->rsp[2].last = SOCAL_CQ_RSP2_SIZE - 1; 782 783 s->req[0].seqno = 1; 784 s->req[1].seqno = 1; 785 s->rsp[0].seqno = 1; 786 s->rsp[1].seqno = 1; 787 s->rsp[2].seqno = 1; 788 789 socal_copy_to_xram(s->xram + SOCAL_CQ_REQ_OFFSET, cq, sizeof(cq)); 790 791 SOD(("Setting up params\n")) 792 793 /* Make our sw copy of SOCAL service parameters */ 794 socal_copy_from_xram(s->serv_params, s->xram + 0x280, sizeof (s->serv_params)); 795 796 s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params; 797 s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20); 798 s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params; 799 s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20); 800 801 socal_enable (s); 802 803 SOD(("Enabled SOCAL\n")) 804} 805 806static int __init socal_probe(void) 807{ 808 struct sbus_bus *sbus; 809 struct sbus_dev *sdev = 0; 810 struct socal *s; 811 int cards = 0; 812 813 for_each_sbus(sbus) { 814 for_each_sbusdev(sdev, sbus) { 815 if(!strcmp(sdev->prom_name, "SUNW,socal")) { 816 socal_init(sdev, cards); 817 cards++; 818 } 819 } 820 } 821 if (!cards) 822 return -EIO; 823 824 for_each_socal(s) 825 if (s->next) 826 s->port[1].fc.next = &s->next->port[0].fc; 827 828 fcp_init (&socals->port[0].fc); 829 return 0; 830} 831 832static void __exit socal_cleanup(void) 833{ 834 struct socal *s; 835 int irq; 836 struct sbus_dev *sdev; 837 838 for_each_socal(s) { 839 irq = s->port[0].fc.irq; 840 free_irq (irq, s); 841 842 fcp_release(&(s->port[0].fc), 2); 843 844 sdev = s->port[0].fc.dev; 845 if (sdev->num_registers == 1) { 846 sbus_iounmap(s->eeprom, sdev->reg_addrs[0].reg_size); 847 } else { 848 sbus_iounmap(s->xram, sdev->reg_addrs[1].reg_size); 849 sbus_iounmap(s->regs, sdev->reg_addrs[2].reg_size); 850 } 851 sbus_free_consistent(sdev, 852 (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE + 853 SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE + 854 SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req), 855 s->req_cpu, s->req_dvma); 856 } 857} 858 859EXPORT_NO_SYMBOLS; 860 861module_init(socal_probe); 862module_exit(socal_cleanup); 863MODULE_LICENSE("GPL"); 864