1 /* 2 * pata_ali.c - ALI 15x3 PATA for new ATA layer 3 * (C) 2005 Red Hat Inc 4 * Alan Cox <alan@redhat.com> 5 * 6 * based in part upon 7 * linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02 8 * 9 * Copyright (C) 1998-2000 Michel Aubry, Maintainer 10 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer 11 * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer 12 * 13 * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org) 14 * May be copied or modified under the terms of the GNU General Public License 15 * Copyright (C) 2002 Alan Cox <alan@redhat.com> 16 * ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw> 17 * 18 * Documentation 19 * Chipset documentation available under NDA only 20 * 21 * TODO/CHECK 22 * Cannot have ATAPI on both master & slave for rev < c2 (???) but 23 * otherwise should do atapi DMA. 24 */ 25 26 #include <linux/kernel.h> 27 #include <linux/module.h> 28 #include <linux/pci.h> 29 #include <linux/init.h> 30 #include <linux/blkdev.h> 31 #include <linux/delay.h> 32 #include <scsi/scsi_host.h> 33 #include <linux/libata.h> 34 #include <linux/dmi.h> 35 36 #define DRV_NAME "pata_ali" 37 #define DRV_VERSION "0.7.3" 38 39 /* 40 * Cable special cases 41 */ 42 43 static struct dmi_system_id cable_dmi_table[] = { 44 { 45 .ident = "HP Pavilion N5430", 46 .matches = { 47 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), 48 DMI_MATCH(DMI_BOARD_NAME, "OmniBook N32N-736"), 49 }, 50 }, 51 { } 52 }; 53 54 static int ali_cable_override(struct pci_dev *pdev) 55 { 56 /* Fujitsu P2000 */ 57 if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF) 58 return 1; 59 /* Systems by DMI */ 60 if (dmi_check_system(cable_dmi_table)) 61 return 1; 62 return 0; 63 } 64 65 /** 66 * ali_c2_cable_detect - cable detection 67 * @ap: ATA port 68 * 69 * Perform cable detection for C2 and later revisions 70 */ 71 72 static int ali_c2_cable_detect(struct ata_port *ap) 73 { 74 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 75 u8 ata66; 76 77 /* Certain laptops use short but suitable cables and don't 78 implement the detect logic */ 79 80 if (ali_cable_override(pdev)) 81 return ATA_CBL_PATA40_SHORT; 82 83 /* Host view cable detect 0x4A bit 0 primary bit 1 secondary 84 Bit set for 40 pin */ 85 pci_read_config_byte(pdev, 0x4A, &ata66); 86 if (ata66 & (1 << ap->port_no)) 87 return ATA_CBL_PATA40; 88 else 89 return ATA_CBL_PATA80; 90 } 91 92 /** 93 * ali_early_error_handler - reset for eary chip 94 * @ap: ATA port 95 * 96 * Handle the reset callback for the later chips with cable detect 97 */ 98 99 static int ali_c2_pre_reset(struct ata_port *ap) 100 { 101 ap->cbl = ali_c2_cable_detect(ap); 102 return ata_std_prereset(ap); 103 } 104 105 static void ali_c2_error_handler(struct ata_port *ap) 106 { 107 ata_bmdma_drive_eh(ap, ali_c2_pre_reset, 108 ata_std_softreset, NULL, 109 ata_std_postreset); 110 } 111 112 /** 113 * ali_early_cable_detect - cable detection 114 * @ap: ATA port 115 * 116 * Perform cable detection for older chipsets. This turns out to be 117 * rather easy to implement 118 */ 119 120 static int ali_early_cable_detect(struct ata_port *ap) 121 { 122 return ATA_CBL_PATA40; 123 } 124 125 /** 126 * ali_early_probe_init - reset for early chip 127 * @ap: ATA port 128 * 129 * Handle the reset callback for the early (pre cable detect) chips. 130 */ 131 132 static int ali_early_pre_reset(struct ata_port *ap) 133 { 134 ap->cbl = ali_early_cable_detect(ap); 135 return ata_std_prereset(ap); 136 } 137 138 static void ali_early_error_handler(struct ata_port *ap) 139 { 140 return ata_bmdma_drive_eh(ap, ali_early_pre_reset, 141 ata_std_softreset, NULL, 142 ata_std_postreset); 143 } 144 145 /** 146 * ali_20_filter - filter for earlier ALI DMA 147 * @ap: ALi ATA port 148 * @adev: attached device 149 * 150 * Ensure that we do not do DMA on CD devices. We may be able to 151 * fix that later on. Also ensure we do not do UDMA on WDC drives 152 */ 153 154 static unsigned long ali_20_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask) 155 { 156 char model_num[ATA_ID_PROD_LEN + 1]; 157 /* No DMA on anything but a disk for now */ 158 if (adev->class != ATA_DEV_ATA) 159 mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA); 160 ata_id_c_string(adev->id, model_num, ATA_ID_PROD, sizeof(model_num)); 161 if (strstr(model_num, "WDC")) 162 return mask &= ~ATA_MASK_UDMA; 163 return ata_pci_default_filter(ap, adev, mask); 164 } 165 166 /** 167 * ali_fifo_control - FIFO manager 168 * @ap: ALi channel to control 169 * @adev: device for FIFO control 170 * @on: 0 for off 1 for on 171 * 172 * Enable or disable the FIFO on a given device. Because of the way the 173 * ALi FIFO works it provides a boost on ATA disk but can be confused by 174 * ATAPI and we must therefore manage it. 175 */ 176 177 static void ali_fifo_control(struct ata_port *ap, struct ata_device *adev, int on) 178 { 179 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 180 int pio_fifo = 0x54 + ap->port_no; 181 u8 fifo; 182 int shift = 4 * adev->devno; 183 184 /* ATA - FIFO on set nibble to 0x05, ATAPI - FIFO off, set nibble to 185 0x00. Not all the docs agree but the behaviour we now use is the 186 one stated in the BIOS Programming Guide */ 187 188 pci_read_config_byte(pdev, pio_fifo, &fifo); 189 fifo &= ~(0x0F << shift); 190 if (on) 191 fifo |= (on << shift); 192 pci_write_config_byte(pdev, pio_fifo, fifo); 193 } 194 195 /** 196 * ali_program_modes - load mode registers 197 * @ap: ALi channel to load 198 * @adev: Device the timing is for 199 * @cmd: Command timing 200 * @data: Data timing 201 * @ultra: UDMA timing or zero for off 202 * 203 * Loads the timing registers for cmd/data and disable UDMA if 204 * ultra is zero. If ultra is set then load and enable the UDMA 205 * timing but do not touch the command/data timing. 206 */ 207 208 static void ali_program_modes(struct ata_port *ap, struct ata_device *adev, struct ata_timing *t, u8 ultra) 209 { 210 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 211 int cas = 0x58 + 4 * ap->port_no; /* Command timing */ 212 int cbt = 0x59 + 4 * ap->port_no; /* Command timing */ 213 int drwt = 0x5A + 4 * ap->port_no + adev->devno; /* R/W timing */ 214 int udmat = 0x56 + ap->port_no; /* UDMA timing */ 215 int shift = 4 * adev->devno; 216 u8 udma; 217 218 if (t != NULL) { 219 t->setup = FIT(t->setup, 1, 8) & 7; 220 t->act8b = FIT(t->act8b, 1, 8) & 7; 221 t->rec8b = FIT(t->rec8b, 1, 16) & 15; 222 t->active = FIT(t->active, 1, 8) & 7; 223 t->recover = FIT(t->recover, 1, 16) & 15; 224 225 pci_write_config_byte(pdev, cas, t->setup); 226 pci_write_config_byte(pdev, cbt, (t->act8b << 4) | t->rec8b); 227 pci_write_config_byte(pdev, drwt, (t->active << 4) | t->recover); 228 } 229 230 /* Set up the UDMA enable */ 231 pci_read_config_byte(pdev, udmat, &udma); 232 udma &= ~(0x0F << shift); 233 udma |= ultra << shift; 234 pci_write_config_byte(pdev, udmat, udma); 235 } 236 237 /** 238 * ali_set_piomode - set initial PIO mode data 239 * @ap: ATA interface 240 * @adev: ATA device 241 * 242 * Program the ALi registers for PIO mode. FIXME: add timings for 243 * PIO5. 244 */ 245 246 static void ali_set_piomode(struct ata_port *ap, struct ata_device *adev) 247 { 248 struct ata_device *pair = ata_dev_pair(adev); 249 struct ata_timing t; 250 unsigned long T = 1000000000 / 33333; /* PCI clock based */ 251 252 ata_timing_compute(adev, adev->pio_mode, &t, T, 1); 253 if (pair) { 254 struct ata_timing p; 255 ata_timing_compute(pair, pair->pio_mode, &p, T, 1); 256 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); 257 if (pair->dma_mode) { 258 ata_timing_compute(pair, pair->dma_mode, &p, T, 1); 259 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); 260 } 261 } 262 263 /* PIO FIFO is only permitted on ATA disk */ 264 if (adev->class != ATA_DEV_ATA) 265 ali_fifo_control(ap, adev, 0x00); 266 ali_program_modes(ap, adev, &t, 0); 267 if (adev->class == ATA_DEV_ATA) 268 ali_fifo_control(ap, adev, 0x05); 269 270 } 271 272 /** 273 * ali_set_dmamode - set initial DMA mode data 274 * @ap: ATA interface 275 * @adev: ATA device 276 * 277 * FIXME: MWDMA timings 278 */ 279 280 static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev) 281 { 282 static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD }; 283 struct ata_device *pair = ata_dev_pair(adev); 284 struct ata_timing t; 285 unsigned long T = 1000000000 / 33333; /* PCI clock based */ 286 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 287 288 289 if (adev->class == ATA_DEV_ATA) 290 ali_fifo_control(ap, adev, 0x08); 291 292 if (adev->dma_mode >= XFER_UDMA_0) { 293 ali_program_modes(ap, adev, NULL, udma_timing[adev->dma_mode - XFER_UDMA_0]); 294 if (adev->dma_mode >= XFER_UDMA_3) { 295 u8 reg4b; 296 pci_read_config_byte(pdev, 0x4B, ®4b); 297 reg4b |= 1; 298 pci_write_config_byte(pdev, 0x4B, reg4b); 299 } 300 } else { 301 ata_timing_compute(adev, adev->dma_mode, &t, T, 1); 302 if (pair) { 303 struct ata_timing p; 304 ata_timing_compute(pair, pair->pio_mode, &p, T, 1); 305 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); 306 if (pair->dma_mode) { 307 ata_timing_compute(pair, pair->dma_mode, &p, T, 1); 308 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT); 309 } 310 } 311 ali_program_modes(ap, adev, &t, 0); 312 } 313 } 314 315 /** 316 * ali_lock_sectors - Keep older devices to 255 sector mode 317 * @ap: ATA port 318 * @adev: Device 319 * 320 * Called during the bus probe for each device that is found. We use 321 * this call to lock the sector count of the device to 255 or less on 322 * older ALi controllers. If we didn't do this then large I/O's would 323 * require LBA48 commands which the older ALi requires are issued by 324 * slower PIO methods 325 */ 326 327 static void ali_lock_sectors(struct ata_port *ap, struct ata_device *adev) 328 { 329 adev->max_sectors = 255; 330 } 331 332 static struct scsi_host_template ali_sht = { 333 .module = THIS_MODULE, 334 .name = DRV_NAME, 335 .ioctl = ata_scsi_ioctl, 336 .queuecommand = ata_scsi_queuecmd, 337 .can_queue = ATA_DEF_QUEUE, 338 .this_id = ATA_SHT_THIS_ID, 339 .sg_tablesize = LIBATA_MAX_PRD, 340 .cmd_per_lun = ATA_SHT_CMD_PER_LUN, 341 .emulated = ATA_SHT_EMULATED, 342 .use_clustering = ATA_SHT_USE_CLUSTERING, 343 .proc_name = DRV_NAME, 344 .dma_boundary = ATA_DMA_BOUNDARY, 345 .slave_configure = ata_scsi_slave_config, 346 .slave_destroy = ata_scsi_slave_destroy, 347 .bios_param = ata_std_bios_param, 348 #ifdef CONFIG_PM 349 .resume = ata_scsi_device_resume, 350 .suspend = ata_scsi_device_suspend, 351 #endif 352 }; 353 354 /* 355 * Port operations for PIO only ALi 356 */ 357 358 static struct ata_port_operations ali_early_port_ops = { 359 .port_disable = ata_port_disable, 360 .set_piomode = ali_set_piomode, 361 .tf_load = ata_tf_load, 362 .tf_read = ata_tf_read, 363 .check_status = ata_check_status, 364 .exec_command = ata_exec_command, 365 .dev_select = ata_std_dev_select, 366 367 .freeze = ata_bmdma_freeze, 368 .thaw = ata_bmdma_thaw, 369 .error_handler = ali_early_error_handler, 370 .post_internal_cmd = ata_bmdma_post_internal_cmd, 371 372 .qc_prep = ata_qc_prep, 373 .qc_issue = ata_qc_issue_prot, 374 375 .data_xfer = ata_data_xfer, 376 377 .irq_handler = ata_interrupt, 378 .irq_clear = ata_bmdma_irq_clear, 379 .irq_on = ata_irq_on, 380 .irq_ack = ata_irq_ack, 381 382 .port_start = ata_port_start, 383 }; 384 385 /* 386 * Port operations for DMA capable ALi without cable 387 * detect 388 */ 389 static struct ata_port_operations ali_20_port_ops = { 390 .port_disable = ata_port_disable, 391 392 .set_piomode = ali_set_piomode, 393 .set_dmamode = ali_set_dmamode, 394 .mode_filter = ali_20_filter, 395 396 .tf_load = ata_tf_load, 397 .tf_read = ata_tf_read, 398 .check_status = ata_check_status, 399 .exec_command = ata_exec_command, 400 .dev_select = ata_std_dev_select, 401 .dev_config = ali_lock_sectors, 402 403 .freeze = ata_bmdma_freeze, 404 .thaw = ata_bmdma_thaw, 405 .error_handler = ali_early_error_handler, 406 .post_internal_cmd = ata_bmdma_post_internal_cmd, 407 408 .bmdma_setup = ata_bmdma_setup, 409 .bmdma_start = ata_bmdma_start, 410 .bmdma_stop = ata_bmdma_stop, 411 .bmdma_status = ata_bmdma_status, 412 413 .qc_prep = ata_qc_prep, 414 .qc_issue = ata_qc_issue_prot, 415 416 .data_xfer = ata_data_xfer, 417 418 .irq_handler = ata_interrupt, 419 .irq_clear = ata_bmdma_irq_clear, 420 .irq_on = ata_irq_on, 421 .irq_ack = ata_irq_ack, 422 423 .port_start = ata_port_start, 424 }; 425 426 /* 427 * Port operations for DMA capable ALi with cable detect 428 */ 429 static struct ata_port_operations ali_c2_port_ops = { 430 .port_disable = ata_port_disable, 431 .set_piomode = ali_set_piomode, 432 .set_dmamode = ali_set_dmamode, 433 .mode_filter = ata_pci_default_filter, 434 .tf_load = ata_tf_load, 435 .tf_read = ata_tf_read, 436 .check_status = ata_check_status, 437 .exec_command = ata_exec_command, 438 .dev_select = ata_std_dev_select, 439 .dev_config = ali_lock_sectors, 440 441 .freeze = ata_bmdma_freeze, 442 .thaw = ata_bmdma_thaw, 443 .error_handler = ali_c2_error_handler, 444 .post_internal_cmd = ata_bmdma_post_internal_cmd, 445 446 .bmdma_setup = ata_bmdma_setup, 447 .bmdma_start = ata_bmdma_start, 448 .bmdma_stop = ata_bmdma_stop, 449 .bmdma_status = ata_bmdma_status, 450 451 .qc_prep = ata_qc_prep, 452 .qc_issue = ata_qc_issue_prot, 453 454 .data_xfer = ata_data_xfer, 455 456 .irq_handler = ata_interrupt, 457 .irq_clear = ata_bmdma_irq_clear, 458 .irq_on = ata_irq_on, 459 .irq_ack = ata_irq_ack, 460 461 .port_start = ata_port_start, 462 }; 463 464 /* 465 * Port operations for DMA capable ALi with cable detect and LBA48 466 */ 467 static struct ata_port_operations ali_c5_port_ops = { 468 .port_disable = ata_port_disable, 469 .set_piomode = ali_set_piomode, 470 .set_dmamode = ali_set_dmamode, 471 .mode_filter = ata_pci_default_filter, 472 .tf_load = ata_tf_load, 473 .tf_read = ata_tf_read, 474 .check_status = ata_check_status, 475 .exec_command = ata_exec_command, 476 .dev_select = ata_std_dev_select, 477 478 .freeze = ata_bmdma_freeze, 479 .thaw = ata_bmdma_thaw, 480 .error_handler = ali_c2_error_handler, 481 .post_internal_cmd = ata_bmdma_post_internal_cmd, 482 483 .bmdma_setup = ata_bmdma_setup, 484 .bmdma_start = ata_bmdma_start, 485 .bmdma_stop = ata_bmdma_stop, 486 .bmdma_status = ata_bmdma_status, 487 488 .qc_prep = ata_qc_prep, 489 .qc_issue = ata_qc_issue_prot, 490 491 .data_xfer = ata_data_xfer, 492 493 .irq_handler = ata_interrupt, 494 .irq_clear = ata_bmdma_irq_clear, 495 .irq_on = ata_irq_on, 496 .irq_ack = ata_irq_ack, 497 498 .port_start = ata_port_start, 499 }; 500 501 502 /** 503 * ali_init_chipset - chip setup function 504 * @pdev: PCI device of ATA controller 505 * 506 * Perform the setup on the device that must be done both at boot 507 * and at resume time. 508 */ 509 510 static void ali_init_chipset(struct pci_dev *pdev) 511 { 512 u8 rev, tmp; 513 struct pci_dev *north, *isa_bridge; 514 515 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); 516 517 /* 518 * The chipset revision selects the driver operations and 519 * mode data. 520 */ 521 522 if (rev >= 0x20 && rev < 0xC2) { 523 /* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */ 524 pci_read_config_byte(pdev, 0x4B, &tmp); 525 /* Clear CD-ROM DMA write bit */ 526 tmp &= 0x7F; 527 pci_write_config_byte(pdev, 0x4B, tmp); 528 } else if (rev >= 0xC2) { 529 /* Enable cable detection logic */ 530 pci_read_config_byte(pdev, 0x4B, &tmp); 531 pci_write_config_byte(pdev, 0x4B, tmp | 0x08); 532 } 533 north = pci_get_bus_and_slot(0, PCI_DEVFN(0,0)); 534 isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); 535 536 if (north && north->vendor == PCI_VENDOR_ID_AL && isa_bridge) { 537 /* Configure the ALi bridge logic. For non ALi rely on BIOS. 538 Set the south bridge enable bit */ 539 pci_read_config_byte(isa_bridge, 0x79, &tmp); 540 if (rev == 0xC2) 541 pci_write_config_byte(isa_bridge, 0x79, tmp | 0x04); 542 else if (rev > 0xC2 && rev < 0xC5) 543 pci_write_config_byte(isa_bridge, 0x79, tmp | 0x02); 544 } 545 if (rev >= 0x20) { 546 /* 547 * CD_ROM DMA on (0x53 bit 0). Enable this even if we want 548 * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control 549 * via 0x54/55. 550 */ 551 pci_read_config_byte(pdev, 0x53, &tmp); 552 if (rev <= 0x20) 553 tmp &= ~0x02; 554 if (rev >= 0xc7) 555 tmp |= 0x03; 556 else 557 tmp |= 0x01; /* CD_ROM enable for DMA */ 558 pci_write_config_byte(pdev, 0x53, tmp); 559 } 560 pci_dev_put(isa_bridge); 561 pci_dev_put(north); 562 ata_pci_clear_simplex(pdev); 563 } 564 /** 565 * ali_init_one - discovery callback 566 * @pdev: PCI device ID 567 * @id: PCI table info 568 * 569 * An ALi IDE interface has been discovered. Figure out what revision 570 * and perform configuration work before handing it to the ATA layer 571 */ 572 573 static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id) 574 { 575 static struct ata_port_info info_early = { 576 .sht = &ali_sht, 577 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, 578 .pio_mask = 0x1f, 579 .port_ops = &ali_early_port_ops 580 }; 581 /* Revision 0x20 added DMA */ 582 static struct ata_port_info info_20 = { 583 .sht = &ali_sht, 584 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, 585 .pio_mask = 0x1f, 586 .mwdma_mask = 0x07, 587 .port_ops = &ali_20_port_ops 588 }; 589 /* Revision 0x20 with support logic added UDMA */ 590 static struct ata_port_info info_20_udma = { 591 .sht = &ali_sht, 592 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, 593 .pio_mask = 0x1f, 594 .mwdma_mask = 0x07, 595 .udma_mask = 0x07, /* UDMA33 */ 596 .port_ops = &ali_20_port_ops 597 }; 598 /* Revision 0xC2 adds UDMA66 */ 599 static struct ata_port_info info_c2 = { 600 .sht = &ali_sht, 601 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, 602 .pio_mask = 0x1f, 603 .mwdma_mask = 0x07, 604 .udma_mask = 0x1f, 605 .port_ops = &ali_c2_port_ops 606 }; 607 /* Revision 0xC3 is UDMA100 */ 608 static struct ata_port_info info_c3 = { 609 .sht = &ali_sht, 610 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, 611 .pio_mask = 0x1f, 612 .mwdma_mask = 0x07, 613 .udma_mask = 0x3f, 614 .port_ops = &ali_c2_port_ops 615 }; 616 /* Revision 0xC4 is UDMA133 */ 617 static struct ata_port_info info_c4 = { 618 .sht = &ali_sht, 619 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST | ATA_FLAG_PIO_LBA48, 620 .pio_mask = 0x1f, 621 .mwdma_mask = 0x07, 622 .udma_mask = 0x7f, 623 .port_ops = &ali_c2_port_ops 624 }; 625 /* Revision 0xC5 is UDMA133 with LBA48 DMA */ 626 static struct ata_port_info info_c5 = { 627 .sht = &ali_sht, 628 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST, 629 .pio_mask = 0x1f, 630 .mwdma_mask = 0x07, 631 .udma_mask = 0x7f, 632 .port_ops = &ali_c5_port_ops 633 }; 634 635 static struct ata_port_info *port_info[2]; 636 u8 rev, tmp; 637 struct pci_dev *isa_bridge; 638 639 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); 640 641 /* 642 * The chipset revision selects the driver operations and 643 * mode data. 644 */ 645 646 if (rev < 0x20) { 647 port_info[0] = port_info[1] = &info_early; 648 } else if (rev < 0xC2) { 649 port_info[0] = port_info[1] = &info_20; 650 } else if (rev == 0xC2) { 651 port_info[0] = port_info[1] = &info_c2; 652 } else if (rev == 0xC3) { 653 port_info[0] = port_info[1] = &info_c3; 654 } else if (rev == 0xC4) { 655 port_info[0] = port_info[1] = &info_c4; 656 } else 657 port_info[0] = port_info[1] = &info_c5; 658 659 ali_init_chipset(pdev); 660 661 isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL); 662 if (isa_bridge && rev >= 0x20 && rev < 0xC2) { 663 /* Are we paired with a UDMA capable chip */ 664 pci_read_config_byte(isa_bridge, 0x5E, &tmp); 665 if ((tmp & 0x1E) == 0x12) 666 port_info[0] = port_info[1] = &info_20_udma; 667 pci_dev_put(isa_bridge); 668 } 669 return ata_pci_init_one(pdev, port_info, 2); 670 } 671 672 #ifdef CONFIG_PM 673 static int ali_reinit_one(struct pci_dev *pdev) 674 { 675 ali_init_chipset(pdev); 676 return ata_pci_device_resume(pdev); 677 } 678 #endif 679 680 static const struct pci_device_id ali[] = { 681 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), }, 682 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), }, 683 684 { }, 685 }; 686 687 static struct pci_driver ali_pci_driver = { 688 .name = DRV_NAME, 689 .id_table = ali, 690 .probe = ali_init_one, 691 .remove = ata_pci_remove_one, 692 #ifdef CONFIG_PM 693 .suspend = ata_pci_device_suspend, 694 .resume = ali_reinit_one, 695 #endif 696 }; 697 698 static int __init ali_init(void) 699 { 700 return pci_register_driver(&ali_pci_driver); 701 } 702 703 704 static void __exit ali_exit(void) 705 { 706 pci_unregister_driver(&ali_pci_driver); 707 } 708 709 710 MODULE_AUTHOR("Alan Cox"); 711 MODULE_DESCRIPTION("low-level driver for ALi PATA"); 712 MODULE_LICENSE("GPL"); 713 MODULE_DEVICE_TABLE(pci, ali); 714 MODULE_VERSION(DRV_VERSION); 715 716 module_init(ali_init); 717 module_exit(ali_exit); 718