mvs_pci.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/11/sys/dev/mvs/mvs_pci.c 330897 2018-03-14 03:19:51Z eadler $"); 31 32#include <sys/param.h> 33#include <sys/module.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/bus.h> 37#include <sys/endian.h> 38#include <sys/malloc.h> 39#include <sys/lock.h> 40#include <sys/mutex.h> 41#include <vm/uma.h> 42#include <machine/stdarg.h> 43#include <machine/resource.h> 44#include <machine/bus.h> 45#include <sys/rman.h> 46#include <dev/pci/pcivar.h> 47#include <dev/pci/pcireg.h> 48#include "mvs.h" 49 50/* local prototypes */ 51static int mvs_setup_interrupt(device_t dev); 52static void mvs_intr(void *data); 53static int mvs_suspend(device_t dev); 54static int mvs_resume(device_t dev); 55static int mvs_ctlr_setup(device_t dev); 56 57static struct { 58 uint32_t id; 59 uint8_t rev; 60 const char *name; 61 int ports; 62 int quirks; 63} mvs_ids[] = { 64 {0x504011ab, 0x00, "Marvell 88SX5040", 4, MVS_Q_GENI}, 65 {0x504111ab, 0x00, "Marvell 88SX5041", 4, MVS_Q_GENI}, 66 {0x508011ab, 0x00, "Marvell 88SX5080", 8, MVS_Q_GENI}, 67 {0x508111ab, 0x00, "Marvell 88SX5081", 8, MVS_Q_GENI}, 68 {0x604011ab, 0x00, "Marvell 88SX6040", 4, MVS_Q_GENII}, 69 {0x604111ab, 0x00, "Marvell 88SX6041", 4, MVS_Q_GENII}, 70 {0x604211ab, 0x00, "Marvell 88SX6042", 4, MVS_Q_GENIIE}, 71 {0x608011ab, 0x00, "Marvell 88SX6080", 8, MVS_Q_GENII}, 72 {0x608111ab, 0x00, "Marvell 88SX6081", 8, MVS_Q_GENII}, 73 {0x704211ab, 0x00, "Marvell 88SX7042", 4, MVS_Q_GENIIE|MVS_Q_CT}, 74 {0x02419005, 0x00, "Adaptec 1420SA", 4, MVS_Q_GENII}, 75 {0x02439005, 0x00, "Adaptec 1430SA", 4, MVS_Q_GENIIE|MVS_Q_CT}, 76 {0x00000000, 0x00, NULL, 0, 0} 77}; 78 79static int 80mvs_probe(device_t dev) 81{ 82 char buf[64]; 83 int i; 84 uint32_t devid = pci_get_devid(dev); 85 uint8_t revid = pci_get_revid(dev); 86 87 for (i = 0; mvs_ids[i].id != 0; i++) { 88 if (mvs_ids[i].id == devid && 89 mvs_ids[i].rev <= revid) { 90 snprintf(buf, sizeof(buf), "%s SATA controller", 91 mvs_ids[i].name); 92 device_set_desc_copy(dev, buf); 93 return (BUS_PROBE_DEFAULT); 94 } 95 } 96 return (ENXIO); 97} 98 99static int 100mvs_attach(device_t dev) 101{ 102 struct mvs_controller *ctlr = device_get_softc(dev); 103 device_t child; 104 int error, unit, i; 105 uint32_t devid = pci_get_devid(dev); 106 uint8_t revid = pci_get_revid(dev); 107 108 ctlr->dev = dev; 109 i = 0; 110 while (mvs_ids[i].id != 0 && 111 (mvs_ids[i].id != devid || 112 mvs_ids[i].rev > revid)) 113 i++; 114 ctlr->channels = mvs_ids[i].ports; 115 ctlr->quirks = mvs_ids[i].quirks; 116 ctlr->ccc = 0; 117 resource_int_value(device_get_name(dev), 118 device_get_unit(dev), "ccc", &ctlr->ccc); 119 ctlr->cccc = 8; 120 resource_int_value(device_get_name(dev), 121 device_get_unit(dev), "cccc", &ctlr->cccc); 122 if (ctlr->ccc == 0 || ctlr->cccc == 0) { 123 ctlr->ccc = 0; 124 ctlr->cccc = 0; 125 } 126 if (ctlr->ccc > 100000) 127 ctlr->ccc = 100000; 128 device_printf(dev, 129 "Gen-%s, %d %sGbps ports, Port Multiplier %s%s\n", 130 ((ctlr->quirks & MVS_Q_GENI) ? "I" : 131 ((ctlr->quirks & MVS_Q_GENII) ? "II" : "IIe")), 132 ctlr->channels, 133 ((ctlr->quirks & MVS_Q_GENI) ? "1.5" : "3"), 134 ((ctlr->quirks & MVS_Q_GENI) ? 135 "not supported" : "supported"), 136 ((ctlr->quirks & MVS_Q_GENIIE) ? 137 " with FBS" : "")); 138 mtx_init(&ctlr->mtx, "MVS controller lock", NULL, MTX_DEF); 139 /* We should have a memory BAR(0). */ 140 ctlr->r_rid = PCIR_BAR(0); 141 if (!(ctlr->r_mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 142 &ctlr->r_rid, RF_ACTIVE))) 143 return ENXIO; 144 /* Setup our own memory management for channels. */ 145 ctlr->sc_iomem.rm_start = rman_get_start(ctlr->r_mem); 146 ctlr->sc_iomem.rm_end = rman_get_end(ctlr->r_mem); 147 ctlr->sc_iomem.rm_type = RMAN_ARRAY; 148 ctlr->sc_iomem.rm_descr = "I/O memory addresses"; 149 if ((error = rman_init(&ctlr->sc_iomem)) != 0) { 150 bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem); 151 return (error); 152 } 153 if ((error = rman_manage_region(&ctlr->sc_iomem, 154 rman_get_start(ctlr->r_mem), rman_get_end(ctlr->r_mem))) != 0) { 155 bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem); 156 rman_fini(&ctlr->sc_iomem); 157 return (error); 158 } 159 pci_enable_busmaster(dev); 160 mvs_ctlr_setup(dev); 161 /* Setup interrupts. */ 162 if (mvs_setup_interrupt(dev)) { 163 bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem); 164 rman_fini(&ctlr->sc_iomem); 165 return ENXIO; 166 } 167 /* Attach all channels on this controller */ 168 for (unit = 0; unit < ctlr->channels; unit++) { 169 child = device_add_child(dev, "mvsch", -1); 170 if (child == NULL) 171 device_printf(dev, "failed to add channel device\n"); 172 else 173 device_set_ivars(child, (void *)(intptr_t)unit); 174 } 175 bus_generic_attach(dev); 176 return 0; 177} 178 179static int 180mvs_detach(device_t dev) 181{ 182 struct mvs_controller *ctlr = device_get_softc(dev); 183 184 /* Detach & delete all children */ 185 device_delete_children(dev); 186 187 /* Free interrupt. */ 188 if (ctlr->irq.r_irq) { 189 bus_teardown_intr(dev, ctlr->irq.r_irq, 190 ctlr->irq.handle); 191 bus_release_resource(dev, SYS_RES_IRQ, 192 ctlr->irq.r_irq_rid, ctlr->irq.r_irq); 193 } 194 pci_release_msi(dev); 195 /* Free memory. */ 196 rman_fini(&ctlr->sc_iomem); 197 if (ctlr->r_mem) 198 bus_release_resource(dev, SYS_RES_MEMORY, ctlr->r_rid, ctlr->r_mem); 199 mtx_destroy(&ctlr->mtx); 200 return (0); 201} 202 203static int 204mvs_ctlr_setup(device_t dev) 205{ 206 struct mvs_controller *ctlr = device_get_softc(dev); 207 int i, ccc = ctlr->ccc, cccc = ctlr->cccc, ccim = 0; 208 209 /* Mask chip interrupts */ 210 ATA_OUTL(ctlr->r_mem, CHIP_MIM, 0x00000000); 211 /* Mask PCI interrupts */ 212 ATA_OUTL(ctlr->r_mem, CHIP_PCIIM, 0x00000000); 213 /* Clear PCI interrupts */ 214 ATA_OUTL(ctlr->r_mem, CHIP_PCIIC, 0x00000000); 215 if (ccc && bootverbose) { 216 device_printf(dev, 217 "CCC with %dus/%dcmd enabled\n", 218 ctlr->ccc, ctlr->cccc); 219 } 220 ccc *= 150; 221 /* Configure chip-global CCC */ 222 if (ctlr->channels > 4 && (ctlr->quirks & MVS_Q_GENI) == 0) { 223 ATA_OUTL(ctlr->r_mem, CHIP_ICT, cccc); 224 ATA_OUTL(ctlr->r_mem, CHIP_ITT, ccc); 225 ATA_OUTL(ctlr->r_mem, CHIP_ICC, ~CHIP_ICC_ALL_PORTS); 226 if (ccc) 227 ccim |= IC_ALL_PORTS_COAL_DONE; 228 ccc = 0; 229 cccc = 0; 230 } 231 for (i = 0; i < ctlr->channels / 4; i++) { 232 /* Configure per-HC CCC */ 233 ATA_OUTL(ctlr->r_mem, HC_BASE(i) + HC_ICT, cccc); 234 ATA_OUTL(ctlr->r_mem, HC_BASE(i) + HC_ITT, ccc); 235 if (ccc) 236 ccim |= (IC_HC0_COAL_DONE << (i * IC_HC_SHIFT)); 237 /* Clear HC interrupts */ 238 ATA_OUTL(ctlr->r_mem, HC_BASE(i) + HC_IC, 0x00000000); 239 } 240 /* Enable chip interrupts */ 241 ctlr->gmim = (ccim ? ccim : (IC_DONE_HC0 | IC_DONE_HC1)) | 242 IC_ERR_HC0 | IC_ERR_HC1; 243 ctlr->mim = ctlr->gmim | ctlr->pmim; 244 ATA_OUTL(ctlr->r_mem, CHIP_MIM, ctlr->mim); 245 /* Enable PCI interrupts */ 246 ATA_OUTL(ctlr->r_mem, CHIP_PCIIM, 0x007fffff); 247 return (0); 248} 249 250static void 251mvs_edma(device_t dev, device_t child, int mode) 252{ 253 struct mvs_controller *ctlr = device_get_softc(dev); 254 int unit = ((struct mvs_channel *)device_get_softc(child))->unit; 255 int bit = IC_DONE_IRQ << (unit * 2 + unit / 4) ; 256 257 if (ctlr->ccc == 0) 258 return; 259 /* CCC is not working for non-EDMA mode. Unmask device interrupts. */ 260 mtx_lock(&ctlr->mtx); 261 if (mode == MVS_EDMA_OFF) 262 ctlr->pmim |= bit; 263 else 264 ctlr->pmim &= ~bit; 265 ctlr->mim = ctlr->gmim | ctlr->pmim; 266 if (!ctlr->msia) 267 ATA_OUTL(ctlr->r_mem, CHIP_MIM, ctlr->mim); 268 mtx_unlock(&ctlr->mtx); 269} 270 271static int 272mvs_suspend(device_t dev) 273{ 274 struct mvs_controller *ctlr = device_get_softc(dev); 275 276 bus_generic_suspend(dev); 277 /* Mask chip interrupts */ 278 ATA_OUTL(ctlr->r_mem, CHIP_MIM, 0x00000000); 279 /* Mask PCI interrupts */ 280 ATA_OUTL(ctlr->r_mem, CHIP_PCIIM, 0x00000000); 281 return 0; 282} 283 284static int 285mvs_resume(device_t dev) 286{ 287 288 mvs_ctlr_setup(dev); 289 return (bus_generic_resume(dev)); 290} 291 292static int 293mvs_setup_interrupt(device_t dev) 294{ 295 struct mvs_controller *ctlr = device_get_softc(dev); 296 int msi = 0; 297 298 /* Process hints. */ 299 resource_int_value(device_get_name(dev), 300 device_get_unit(dev), "msi", &msi); 301 if (msi < 0) 302 msi = 0; 303 else if (msi > 0) 304 msi = min(1, pci_msi_count(dev)); 305 /* Allocate MSI if needed/present. */ 306 if (msi && pci_alloc_msi(dev, &msi) != 0) 307 msi = 0; 308 ctlr->msi = msi; 309 /* Allocate all IRQs. */ 310 ctlr->irq.r_irq_rid = msi ? 1 : 0; 311 if (!(ctlr->irq.r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, 312 &ctlr->irq.r_irq_rid, RF_SHAREABLE | RF_ACTIVE))) { 313 device_printf(dev, "unable to map interrupt\n"); 314 return (ENXIO); 315 } 316 if ((bus_setup_intr(dev, ctlr->irq.r_irq, ATA_INTR_FLAGS, NULL, 317 mvs_intr, ctlr, &ctlr->irq.handle))) { 318 device_printf(dev, "unable to setup interrupt\n"); 319 bus_release_resource(dev, SYS_RES_IRQ, 320 ctlr->irq.r_irq_rid, ctlr->irq.r_irq); 321 ctlr->irq.r_irq = NULL; 322 return (ENXIO); 323 } 324 return (0); 325} 326 327/* 328 * Common case interrupt handler. 329 */ 330static void 331mvs_intr(void *data) 332{ 333 struct mvs_controller *ctlr = data; 334 struct mvs_intr_arg arg; 335 void (*function)(void *); 336 int p; 337 u_int32_t ic, aic; 338 339 ic = ATA_INL(ctlr->r_mem, CHIP_MIC); 340 if (ctlr->msi) { 341 /* We have to mask MSI during processing. */ 342 mtx_lock(&ctlr->mtx); 343 ATA_OUTL(ctlr->r_mem, CHIP_MIM, 0); 344 ctlr->msia = 1; /* Deny MIM update during processing. */ 345 mtx_unlock(&ctlr->mtx); 346 } else if (ic == 0) 347 return; 348 /* Acknowledge all-ports CCC interrupt. */ 349 if (ic & IC_ALL_PORTS_COAL_DONE) 350 ATA_OUTL(ctlr->r_mem, CHIP_ICC, ~CHIP_ICC_ALL_PORTS); 351 for (p = 0; p < ctlr->channels; p++) { 352 if ((p & 3) == 0) { 353 if (p != 0) 354 ic >>= 1; 355 if ((ic & IC_HC0) == 0) { 356 p += 3; 357 ic >>= 8; 358 continue; 359 } 360 /* Acknowledge interrupts of this HC. */ 361 aic = 0; 362 if (ic & (IC_DONE_IRQ << 0)) 363 aic |= HC_IC_DONE(0) | HC_IC_DEV(0); 364 if (ic & (IC_DONE_IRQ << 2)) 365 aic |= HC_IC_DONE(1) | HC_IC_DEV(1); 366 if (ic & (IC_DONE_IRQ << 4)) 367 aic |= HC_IC_DONE(2) | HC_IC_DEV(2); 368 if (ic & (IC_DONE_IRQ << 6)) 369 aic |= HC_IC_DONE(3) | HC_IC_DEV(3); 370 if (ic & IC_HC0_COAL_DONE) 371 aic |= HC_IC_COAL; 372 ATA_OUTL(ctlr->r_mem, HC_BASE(p == 4) + HC_IC, ~aic); 373 } 374 /* Call per-port interrupt handler. */ 375 arg.cause = ic & (IC_ERR_IRQ|IC_DONE_IRQ); 376 if ((arg.cause != 0) && 377 (function = ctlr->interrupt[p].function)) { 378 arg.arg = ctlr->interrupt[p].argument; 379 function(&arg); 380 } 381 ic >>= 2; 382 } 383 if (ctlr->msi) { 384 /* Unmasking MSI triggers next interrupt, if needed. */ 385 mtx_lock(&ctlr->mtx); 386 ctlr->msia = 0; /* Allow MIM update. */ 387 ATA_OUTL(ctlr->r_mem, CHIP_MIM, ctlr->mim); 388 mtx_unlock(&ctlr->mtx); 389 } 390} 391 392static struct resource * 393mvs_alloc_resource(device_t dev, device_t child, int type, int *rid, 394 rman_res_t start, rman_res_t end, rman_res_t count, 395 u_int flags) 396{ 397 struct mvs_controller *ctlr = device_get_softc(dev); 398 int unit = ((struct mvs_channel *)device_get_softc(child))->unit; 399 struct resource *res = NULL; 400 int offset = HC_BASE(unit >> 2) + PORT_BASE(unit & 0x03); 401 rman_res_t st; 402 403 switch (type) { 404 case SYS_RES_MEMORY: 405 st = rman_get_start(ctlr->r_mem); 406 res = rman_reserve_resource(&ctlr->sc_iomem, st + offset, 407 st + offset + PORT_SIZE - 1, PORT_SIZE, RF_ACTIVE, child); 408 if (res) { 409 bus_space_handle_t bsh; 410 bus_space_tag_t bst; 411 bsh = rman_get_bushandle(ctlr->r_mem); 412 bst = rman_get_bustag(ctlr->r_mem); 413 bus_space_subregion(bst, bsh, offset, PORT_SIZE, &bsh); 414 rman_set_bushandle(res, bsh); 415 rman_set_bustag(res, bst); 416 } 417 break; 418 case SYS_RES_IRQ: 419 if (*rid == ATA_IRQ_RID) 420 res = ctlr->irq.r_irq; 421 break; 422 } 423 return (res); 424} 425 426static int 427mvs_release_resource(device_t dev, device_t child, int type, int rid, 428 struct resource *r) 429{ 430 431 switch (type) { 432 case SYS_RES_MEMORY: 433 rman_release_resource(r); 434 return (0); 435 case SYS_RES_IRQ: 436 if (rid != ATA_IRQ_RID) 437 return ENOENT; 438 return (0); 439 } 440 return (EINVAL); 441} 442 443static int 444mvs_setup_intr(device_t dev, device_t child, struct resource *irq, 445 int flags, driver_filter_t *filter, driver_intr_t *function, 446 void *argument, void **cookiep) 447{ 448 struct mvs_controller *ctlr = device_get_softc(dev); 449 int unit = (intptr_t)device_get_ivars(child); 450 451 if (filter != NULL) { 452 printf("mvs.c: we cannot use a filter here\n"); 453 return (EINVAL); 454 } 455 ctlr->interrupt[unit].function = function; 456 ctlr->interrupt[unit].argument = argument; 457 return (0); 458} 459 460static int 461mvs_teardown_intr(device_t dev, device_t child, struct resource *irq, 462 void *cookie) 463{ 464 struct mvs_controller *ctlr = device_get_softc(dev); 465 int unit = (intptr_t)device_get_ivars(child); 466 467 ctlr->interrupt[unit].function = NULL; 468 ctlr->interrupt[unit].argument = NULL; 469 return (0); 470} 471 472static int 473mvs_print_child(device_t dev, device_t child) 474{ 475 int retval; 476 477 retval = bus_print_child_header(dev, child); 478 retval += printf(" at channel %d", 479 (int)(intptr_t)device_get_ivars(child)); 480 retval += bus_print_child_footer(dev, child); 481 482 return (retval); 483} 484 485static int 486mvs_child_location_str(device_t dev, device_t child, char *buf, 487 size_t buflen) 488{ 489 490 snprintf(buf, buflen, "channel=%d", 491 (int)(intptr_t)device_get_ivars(child)); 492 return (0); 493} 494 495static bus_dma_tag_t 496mvs_get_dma_tag(device_t bus, device_t child) 497{ 498 499 return (bus_get_dma_tag(bus)); 500} 501 502static device_method_t mvs_methods[] = { 503 DEVMETHOD(device_probe, mvs_probe), 504 DEVMETHOD(device_attach, mvs_attach), 505 DEVMETHOD(device_detach, mvs_detach), 506 DEVMETHOD(device_suspend, mvs_suspend), 507 DEVMETHOD(device_resume, mvs_resume), 508 DEVMETHOD(bus_print_child, mvs_print_child), 509 DEVMETHOD(bus_alloc_resource, mvs_alloc_resource), 510 DEVMETHOD(bus_release_resource, mvs_release_resource), 511 DEVMETHOD(bus_setup_intr, mvs_setup_intr), 512 DEVMETHOD(bus_teardown_intr,mvs_teardown_intr), 513 DEVMETHOD(bus_child_location_str, mvs_child_location_str), 514 DEVMETHOD(bus_get_dma_tag, mvs_get_dma_tag), 515 DEVMETHOD(mvs_edma, mvs_edma), 516 { 0, 0 } 517}; 518static driver_t mvs_driver = { 519 "mvs", 520 mvs_methods, 521 sizeof(struct mvs_controller) 522}; 523DRIVER_MODULE(mvs, pci, mvs_driver, mvs_devclass, 0, 0); 524MODULE_VERSION(mvs, 1); 525MODULE_DEPEND(mvs, cam, 1, 1, 1); 526 527