1 /* $NetBSD: isp_sbus.c,v 1.78 2009/09/07 13:39:19 tsutsui Exp $ */ 2 /* 3 * SBus specific probe and attach routines for Qlogic ISP SCSI adapters. 4 * 5 * Copyright (C) 1997, 1998, 1999 National Aeronautics & Space Administration 6 * All rights reserved. 7 * 8 * Additional Copyright (C) 2000-2007 by Matthew Jacob 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: isp_sbus.c,v 1.78 2009/09/07 13:39:19 tsutsui Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/device.h> 41 #include <sys/kernel.h> 42 #include <sys/malloc.h> 43 #include <sys/queue.h> 44 #include <dev/ic/isp_netbsd.h> 45 #include <sys/intr.h> 46 #include <machine/autoconf.h> 47 #include <dev/sbus/sbusvar.h> 48 #include <sys/reboot.h> 49 50 static void isp_sbus_reset0(ispsoftc_t *); 51 static void isp_sbus_reset1(ispsoftc_t *); 52 static int isp_sbus_intr(void *); 53 static int 54 isp_sbus_rd_isr(ispsoftc_t *, uint32_t *, uint16_t *, uint16_t *); 55 static uint32_t isp_sbus_rd_reg(ispsoftc_t *, int); 56 static void isp_sbus_wr_reg (ispsoftc_t *, int, uint32_t); 57 static int isp_sbus_mbxdma(ispsoftc_t *); 58 static int isp_sbus_dmasetup(ispsoftc_t *, XS_T *, void *); 59 static void isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint32_t); 60 61 #ifndef ISP_DISABLE_FW 62 #include <dev/microcode/isp/asm_sbus.h> 63 #else 64 #define ISP_1000_RISC_CODE NULL 65 #endif 66 67 static const struct ispmdvec mdvec = { 68 isp_sbus_rd_isr, 69 isp_sbus_rd_reg, 70 isp_sbus_wr_reg, 71 isp_sbus_mbxdma, 72 isp_sbus_dmasetup, 73 isp_sbus_dmateardown, 74 isp_sbus_reset0, 75 isp_sbus_reset1, 76 NULL, 77 ISP_1000_RISC_CODE, 78 0, 79 0 80 }; 81 82 struct isp_sbussoftc { 83 ispsoftc_t sbus_isp; 84 struct sbusdev sbus_sd; 85 sdparam sbus_dev; 86 struct scsipi_channel sbus_chan; 87 bus_space_tag_t sbus_bustag; 88 bus_space_handle_t sbus_reg; 89 int sbus_node; 90 int sbus_pri; 91 struct ispmdvec sbus_mdvec; 92 bus_dmamap_t *sbus_dmamap; 93 int16_t sbus_poff[_NREG_BLKS]; 94 }; 95 96 97 static int isp_match(device_t, cfdata_t, void *); 98 static void isp_sbus_attach(device_t, device_t, void *); 99 CFATTACH_DECL_NEW(isp_sbus, sizeof (struct isp_sbussoftc), 100 isp_match, isp_sbus_attach, NULL, NULL); 101 102 static int 103 isp_match(device_t parent, cfdata_t cf, void *aux) 104 { 105 int rv; 106 struct sbus_attach_args *sa = aux; 107 108 rv = (strcmp(cf->cf_name, sa->sa_name) == 0 || 109 strcmp("PTI,ptisp", sa->sa_name) == 0 || 110 strcmp("ptisp", sa->sa_name) == 0 || 111 strcmp("SUNW,isp", sa->sa_name) == 0 || 112 strcmp("QLGC,isp", sa->sa_name) == 0); 113 114 return (rv); 115 } 116 117 118 static void 119 isp_sbus_attach(device_t parent, device_t self, void *aux) 120 { 121 int freq, ispburst, sbusburst; 122 struct sbus_attach_args *sa = aux; 123 struct isp_sbussoftc *sbc = device_private(self); 124 struct sbus_softc *sbsc = device_private(parent); 125 ispsoftc_t *isp = &sbc->sbus_isp; 126 127 isp->isp_osinfo.dev = self; 128 129 printf(" for %s\n", sa->sa_name); 130 131 isp->isp_nchan = isp->isp_osinfo.adapter.adapt_nchannels = 1; 132 133 sbc->sbus_bustag = sa->sa_bustag; 134 if (sa->sa_nintr != 0) 135 sbc->sbus_pri = sa->sa_pri; 136 sbc->sbus_mdvec = mdvec; 137 138 if (sa->sa_npromvaddrs) { 139 sbus_promaddr_to_handle(sa->sa_bustag, 140 sa->sa_promvaddrs[0], &sbc->sbus_reg); 141 } else { 142 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, 143 sa->sa_size, 0, &sbc->sbus_reg) != 0) { 144 aprint_error_dev(self, "cannot map registers\n"); 145 return; 146 } 147 } 148 sbc->sbus_node = sa->sa_node; 149 150 freq = prom_getpropint(sa->sa_node, "clock-frequency", 0); 151 if (freq) { 152 /* 153 * Convert from HZ to MHz, rounding up. 154 */ 155 freq = (freq + 500000)/1000000; 156 } 157 sbc->sbus_mdvec.dv_clock = freq; 158 159 /* 160 * Now figure out what the proper burst sizes, etc., to use. 161 * Unfortunately, there is no ddi_dma_burstsizes here which 162 * walks up the tree finding the limiting burst size node (if 163 * any). 164 */ 165 sbusburst = sbsc->sc_burst; 166 if (sbusburst == 0) 167 sbusburst = SBUS_BURST_32 - 1; 168 ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1); 169 if (ispburst == -1) { 170 ispburst = sbusburst; 171 } 172 ispburst &= sbusburst; 173 ispburst &= ~(1 << 7); 174 ispburst &= ~(1 << 6); 175 sbc->sbus_mdvec.dv_conf1 = 0; 176 if (ispburst & (1 << 5)) { 177 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32; 178 } else if (ispburst & (1 << 4)) { 179 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16; 180 } else if (ispburst & (1 << 3)) { 181 sbc->sbus_mdvec.dv_conf1 = 182 BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8; 183 } 184 if (sbc->sbus_mdvec.dv_conf1) { 185 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE; 186 } 187 188 isp->isp_mdvec = &sbc->sbus_mdvec; 189 isp->isp_bustype = ISP_BT_SBUS; 190 isp->isp_type = ISP_HA_SCSI_UNKNOWN; 191 isp->isp_param = &sbc->sbus_dev; 192 isp->isp_dmatag = sa->sa_dmatag; 193 ISP_MEMZERO(isp->isp_param, sizeof (sdparam)); 194 isp->isp_osinfo.chan = &sbc->sbus_chan; 195 196 sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF; 197 sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF; 198 sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF; 199 sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF; 200 sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF; 201 202 /* Establish interrupt channel */ 203 bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO, 204 isp_sbus_intr, sbc); 205 sbus_establish(&sbc->sbus_sd, self); 206 207 /* 208 * Set up logging levels. 209 */ 210 #ifdef ISP_LOGDEFAULT 211 isp->isp_dblev = ISP_LOGDEFAULT; 212 #else 213 isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR; 214 if (bootverbose) 215 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO; 216 #ifdef SCSIDEBUG 217 isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2; 218 #endif 219 #ifdef DEBUG 220 isp->isp_dblev |= ISP_LOGDEBUG0; 221 #endif 222 #endif 223 224 isp->isp_confopts = device_cfdata(self)->cf_flags; 225 SDPARAM(isp, 0)->role = ISP_DEFAULT_ROLES; 226 227 /* 228 * There's no tool on sparc to set NVRAM for ISPs, so ignore it. 229 */ 230 isp->isp_confopts |= ISP_CFG_NONVRAM; 231 232 /* 233 * Mark things if we're a PTI SBus adapter. 234 */ 235 if (strcmp("PTI,ptisp", sa->sa_name) == 0 || 236 strcmp("ptisp", sa->sa_name) == 0) { 237 SDPARAM(isp, 0)->isp_ptisp = 1; 238 } 239 ISP_LOCK(isp); 240 isp_reset(isp, 1); 241 if (isp->isp_state != ISP_RESETSTATE) { 242 ISP_UNLOCK(isp); 243 return; 244 } 245 ISP_ENABLE_INTS(isp); 246 isp_init(isp); 247 if (isp->isp_state != ISP_INITSTATE) { 248 isp_uninit(isp); 249 ISP_UNLOCK(isp); 250 return; 251 } 252 253 /* 254 * do generic attach. 255 */ 256 ISP_UNLOCK(isp); 257 isp_attach(isp); 258 } 259 260 261 static void 262 isp_sbus_reset0(ispsoftc_t *isp) 263 { 264 ISP_DISABLE_INTS(isp); 265 } 266 267 static void 268 isp_sbus_reset1(ispsoftc_t *isp) 269 { 270 ISP_ENABLE_INTS(isp); 271 } 272 273 static int 274 isp_sbus_intr(void *arg) 275 { 276 uint32_t isr; 277 uint16_t sema, mbox; 278 ispsoftc_t *isp = arg; 279 280 if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) { 281 isp->isp_intbogus++; 282 return (0); 283 } else { 284 struct isp_sbussoftc *sbc = arg; 285 sbc->sbus_isp.isp_osinfo.onintstack = 1; 286 isp_intr(isp, isr, sema, mbox); 287 sbc->sbus_isp.isp_osinfo.onintstack = 0; 288 return (1); 289 } 290 } 291 292 #define IspVirt2Off(a, x) \ 293 (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \ 294 _BLK_REG_SHFT] + ((x) & 0xff)) 295 296 #define BXR2(sbc, off) \ 297 bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off) 298 299 static int 300 isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp, 301 uint16_t *semap, uint16_t *mbp) 302 { 303 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 304 uint32_t isr; 305 uint16_t sema; 306 307 isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR)); 308 sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA)); 309 isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema); 310 isr &= INT_PENDING_MASK(isp); 311 sema &= BIU_SEMA_LOCK; 312 if (isr == 0 && sema == 0) { 313 return (0); 314 } 315 *isrp = isr; 316 if ((*semap = sema) != 0) { 317 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0)); 318 } 319 return (1); 320 } 321 322 static uint32_t 323 isp_sbus_rd_reg(ispsoftc_t *isp, int regoff) 324 { 325 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 326 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 327 offset += (regoff & 0xff); 328 return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset)); 329 } 330 331 static void 332 isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val) 333 { 334 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 335 int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT]; 336 offset += (regoff & 0xff); 337 bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val); 338 } 339 340 static int 341 isp_sbus_mbxdma(ispsoftc_t *isp) 342 { 343 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 344 bus_dma_segment_t reqseg, rspseg; 345 int reqrs, rsprs, i, progress; 346 size_t n; 347 bus_size_t len; 348 349 if (isp->isp_rquest_dma) 350 return (0); 351 352 n = isp->isp_maxcmds * sizeof (XS_T *); 353 isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK); 354 if (isp->isp_xflist == NULL) { 355 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array"); 356 return (1); 357 } 358 ISP_MEMZERO(isp->isp_xflist, n); 359 n = sizeof (bus_dmamap_t) * isp->isp_maxcmds; 360 sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK); 361 if (sbc->sbus_dmamap == NULL) { 362 free(isp->isp_xflist, M_DEVBUF); 363 isp->isp_xflist = NULL; 364 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array"); 365 return (1); 366 } 367 for (i = 0; i < isp->isp_maxcmds; i++) { 368 /* Allocate a DMA handle */ 369 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS, 370 1 << 24, BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) { 371 isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error"); 372 break; 373 } 374 } 375 if (i < isp->isp_maxcmds) { 376 while (--i >= 0) { 377 bus_dmamap_destroy(isp->isp_dmatag, 378 sbc->sbus_dmamap[i]); 379 } 380 free(isp->isp_xflist, M_DEVBUF); 381 free(sbc->sbus_dmamap, M_DEVBUF); 382 isp->isp_xflist = NULL; 383 sbc->sbus_dmamap = NULL; 384 return (1); 385 } 386 387 /* 388 * Allocate and map the request and response queues 389 */ 390 progress = 0; 391 len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)); 392 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs, 393 BUS_DMA_NOWAIT)) { 394 goto dmafail; 395 } 396 progress++; 397 if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len, 398 (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 399 goto dmafail; 400 } 401 progress++; 402 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, 403 BUS_DMA_NOWAIT, &isp->isp_rqdmap) != 0) { 404 goto dmafail; 405 } 406 progress++; 407 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap, 408 isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) { 409 goto dmafail; 410 } 411 progress++; 412 isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr; 413 414 len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)); 415 if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs, 416 BUS_DMA_NOWAIT)) { 417 goto dmafail; 418 } 419 progress++; 420 if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len, 421 (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 422 goto dmafail; 423 } 424 progress++; 425 if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24, 426 BUS_DMA_NOWAIT, &isp->isp_rsdmap) != 0) { 427 goto dmafail; 428 } 429 progress++; 430 if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap, 431 isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) { 432 goto dmafail; 433 } 434 isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr; 435 436 return (0); 437 438 dmafail: 439 isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure"); 440 441 if (progress >= 8) { 442 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap); 443 } 444 if (progress >= 7) { 445 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap); 446 } 447 if (progress >= 6) { 448 bus_dmamem_unmap(isp->isp_dmatag, 449 isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp))); 450 } 451 if (progress >= 5) { 452 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs); 453 } 454 455 if (progress >= 4) { 456 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap); 457 } 458 if (progress >= 3) { 459 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap); 460 } 461 if (progress >= 2) { 462 bus_dmamem_unmap(isp->isp_dmatag, 463 isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp))); 464 } 465 if (progress >= 1) { 466 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs); 467 } 468 469 for (i = 0; i < isp->isp_maxcmds; i++) { 470 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]); 471 } 472 free(sbc->sbus_dmamap, M_DEVBUF); 473 free(isp->isp_xflist, M_DEVBUF); 474 isp->isp_xflist = NULL; 475 sbc->sbus_dmamap = NULL; 476 return (1); 477 } 478 479 /* 480 * Map a DMA request. 481 * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds. 482 */ 483 484 static int 485 isp_sbus_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, void *arg) 486 { 487 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)isp; 488 ispreq_t *rq = arg; 489 bus_dmamap_t dmap; 490 bus_dma_segment_t *dm_segs; 491 uint32_t nsegs; 492 isp_ddir_t ddir; 493 494 dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)]; 495 if (xs->datalen == 0) { 496 ddir = ISP_NOXFR; 497 nsegs = 0; 498 dm_segs = NULL; 499 } else { 500 int error; 501 uint32_t flag, flg2; 502 503 if (xs->xs_control & XS_CTL_DATA_IN) { 504 flg2 = BUS_DMASYNC_PREREAD; 505 flag = BUS_DMA_READ; 506 ddir = ISP_FROM_DEVICE; 507 } else { 508 flg2 = BUS_DMASYNC_PREWRITE; 509 flag = BUS_DMA_WRITE; 510 ddir = ISP_TO_DEVICE; 511 } 512 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen, 513 NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | flag); 514 if (error) { 515 isp_prt(isp, ISP_LOGWARN, "unable to load DMA (%d)", error); 516 XS_SETERR(xs, HBA_BOTCH); 517 if (error == EAGAIN || error == ENOMEM) { 518 return (CMD_EAGAIN); 519 } else { 520 return (CMD_COMPLETE); 521 } 522 } 523 dm_segs = dmap->dm_segs; 524 nsegs = dmap->dm_nsegs; 525 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, dmap->dm_mapsize, flg2); 526 } 527 528 if (isp_send_cmd(isp, rq, dm_segs, nsegs, xs->datalen, ddir) != CMD_QUEUED) { 529 return (CMD_EAGAIN); 530 } else { 531 return (CMD_QUEUED); 532 } 533 } 534 535 static void 536 isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle) 537 { 538 struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp; 539 bus_dmamap_t dmap; 540 541 dmap = sbc->sbus_dmamap[isp_handle_index(handle)]; 542 543 if (dmap->dm_nsegs == 0) { 544 panic("%s: DMA map not already allocated", 545 device_xname(isp->isp_osinfo.dev)); 546 /* NOTREACHED */ 547 } 548 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, 549 xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)? 550 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 551 bus_dmamap_unload(isp->isp_dmatag, dmap); 552 } 553