1 /* 2 * pata_sis.c - SiS ATA driver 3 * 4 * (C) 2005 Red Hat 5 * (C) 2007,2009 Bartlomiej Zolnierkiewicz 6 * 7 * Based upon linux/drivers/ide/pci/sis5513.c 8 * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org> 9 * Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer 10 * Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz> 11 * SiS Taiwan : for direct support and hardware. 12 * Daniela Engert : for initial ATA100 advices and numerous others. 13 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt : 14 * for checking code correctness, providing patches. 15 * Original tests and design on the SiS620 chipset. 16 * ATA100 tests and design on the SiS735 chipset. 17 * ATA16/33 support from specs 18 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw> 19 * 20 * 21 * TODO 22 * Check MWDMA on drives that don't support MWDMA speed pio cycles ? 23 * More Testing 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 <linux/device.h> 33 #include <scsi/scsi_host.h> 34 #include <linux/libata.h> 35 #include <linux/ata.h> 36 #include "sis.h" 37 38 #define DRV_NAME "pata_sis" 39 #define DRV_VERSION "0.5.2" 40 41 struct sis_chipset { 42 u16 device; /* PCI host ID */ 43 const struct ata_port_info *info; /* Info block */ 44 /* Probably add family, cable detect type etc here to clean 45 up code later */ 46 }; 47 48 struct sis_laptop { 49 u16 device; 50 u16 subvendor; 51 u16 subdevice; 52 }; 53 54 static const struct sis_laptop sis_laptop[] = { 55 /* devid, subvendor, subdev */ 56 { 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */ 57 { 0x5513, 0x1734, 0x105F }, /* FSC Amilo A1630 */ 58 { 0x5513, 0x1071, 0x8640 }, /* EasyNote K5305 */ 59 /* end marker */ 60 { 0, } 61 }; 62 63 static int sis_short_ata40(struct pci_dev *dev) 64 { 65 const struct sis_laptop *lap = &sis_laptop[0]; 66 67 while (lap->device) { 68 if (lap->device == dev->device && 69 lap->subvendor == dev->subsystem_vendor && 70 lap->subdevice == dev->subsystem_device) 71 return 1; 72 lap++; 73 } 74 75 return 0; 76 } 77 78 /** 79 * sis_old_port_base - return PCI configuration base for dev 80 * @adev: device 81 * 82 * Returns the base of the PCI configuration registers for this port 83 * number. 84 */ 85 86 static int sis_old_port_base(struct ata_device *adev) 87 { 88 return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno); 89 } 90 91 /** 92 * sis_port_base - return PCI configuration base for dev 93 * @adev: device 94 * 95 * Returns the base of the PCI configuration registers for this port 96 * number. 97 */ 98 99 static int sis_port_base(struct ata_device *adev) 100 { 101 struct ata_port *ap = adev->link->ap; 102 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 103 int port = 0x40; 104 u32 reg54; 105 106 /* If bit 30 is set then the registers are mapped at 0x70 not 0x40 */ 107 pci_read_config_dword(pdev, 0x54, ®54); 108 if (reg54 & 0x40000000) 109 port = 0x70; 110 111 return port + (8 * ap->port_no) + (4 * adev->devno); 112 } 113 114 /** 115 * sis_133_cable_detect - check for 40/80 pin 116 * @ap: Port 117 * @deadline: deadline jiffies for the operation 118 * 119 * Perform cable detection for the later UDMA133 capable 120 * SiS chipset. 121 */ 122 123 static int sis_133_cable_detect(struct ata_port *ap) 124 { 125 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 126 u16 tmp; 127 128 /* The top bit of this register is the cable detect bit */ 129 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp); 130 if ((tmp & 0x8000) && !sis_short_ata40(pdev)) 131 return ATA_CBL_PATA40; 132 return ATA_CBL_PATA80; 133 } 134 135 /** 136 * sis_66_cable_detect - check for 40/80 pin 137 * @ap: Port 138 * 139 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133 140 * SiS IDE controllers. 141 */ 142 143 static int sis_66_cable_detect(struct ata_port *ap) 144 { 145 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 146 u8 tmp; 147 148 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */ 149 pci_read_config_byte(pdev, 0x48, &tmp); 150 tmp >>= ap->port_no; 151 if ((tmp & 0x10) && !sis_short_ata40(pdev)) 152 return ATA_CBL_PATA40; 153 return ATA_CBL_PATA80; 154 } 155 156 157 /** 158 * sis_pre_reset - probe begin 159 * @link: ATA link 160 * @deadline: deadline jiffies for the operation 161 * 162 * Set up cable type and use generic probe init 163 */ 164 165 static int sis_pre_reset(struct ata_link *link, unsigned long deadline) 166 { 167 static const struct pci_bits sis_enable_bits[] = { 168 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */ 169 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */ 170 }; 171 172 struct ata_port *ap = link->ap; 173 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 174 175 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no])) 176 return -ENOENT; 177 178 /* Clear the FIFO settings. We can't enable the FIFO until 179 we know we are poking at a disk */ 180 pci_write_config_byte(pdev, 0x4B, 0); 181 return ata_sff_prereset(link, deadline); 182 } 183 184 185 /** 186 * sis_set_fifo - Set RWP fifo bits for this device 187 * @ap: Port 188 * @adev: Device 189 * 190 * SIS chipsets implement prefetch/postwrite bits for each device 191 * on both channels. This functionality is not ATAPI compatible and 192 * must be configured according to the class of device present 193 */ 194 195 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev) 196 { 197 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 198 u8 fifoctrl; 199 u8 mask = 0x11; 200 201 mask <<= (2 * ap->port_no); 202 mask <<= adev->devno; 203 204 /* This holds various bits including the FIFO control */ 205 pci_read_config_byte(pdev, 0x4B, &fifoctrl); 206 fifoctrl &= ~mask; 207 208 /* Enable for ATA (disk) only */ 209 if (adev->class == ATA_DEV_ATA) 210 fifoctrl |= mask; 211 pci_write_config_byte(pdev, 0x4B, fifoctrl); 212 } 213 214 /** 215 * sis_old_set_piomode - Initialize host controller PATA PIO timings 216 * @ap: Port whose timings we are configuring 217 * @adev: Device we are configuring for. 218 * 219 * Set PIO mode for device, in host controller PCI config space. This 220 * function handles PIO set up for all chips that are pre ATA100 and 221 * also early ATA100 devices. 222 * 223 * LOCKING: 224 * None (inherited from caller). 225 */ 226 227 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev) 228 { 229 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 230 int port = sis_old_port_base(adev); 231 u8 t1, t2; 232 int speed = adev->pio_mode - XFER_PIO_0; 233 234 static const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 }; 235 static const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 }; 236 237 sis_set_fifo(ap, adev); 238 239 pci_read_config_byte(pdev, port, &t1); 240 pci_read_config_byte(pdev, port + 1, &t2); 241 242 t1 &= ~0x0F; /* Clear active/recovery timings */ 243 t2 &= ~0x07; 244 245 t1 |= active[speed]; 246 t2 |= recovery[speed]; 247 248 pci_write_config_byte(pdev, port, t1); 249 pci_write_config_byte(pdev, port + 1, t2); 250 } 251 252 /** 253 * sis_100_set_piomode - Initialize host controller PATA PIO timings 254 * @ap: Port whose timings we are configuring 255 * @adev: Device we are configuring for. 256 * 257 * Set PIO mode for device, in host controller PCI config space. This 258 * function handles PIO set up for ATA100 devices and early ATA133. 259 * 260 * LOCKING: 261 * None (inherited from caller). 262 */ 263 264 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev) 265 { 266 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 267 int port = sis_old_port_base(adev); 268 int speed = adev->pio_mode - XFER_PIO_0; 269 270 static const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 }; 271 272 sis_set_fifo(ap, adev); 273 274 pci_write_config_byte(pdev, port, actrec[speed]); 275 } 276 277 /** 278 * sis_133_set_piomode - Initialize host controller PATA PIO timings 279 * @ap: Port whose timings we are configuring 280 * @adev: Device we are configuring for. 281 * 282 * Set PIO mode for device, in host controller PCI config space. This 283 * function handles PIO set up for the later ATA133 devices. 284 * 285 * LOCKING: 286 * None (inherited from caller). 287 */ 288 289 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev) 290 { 291 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 292 int port; 293 u32 t1; 294 int speed = adev->pio_mode - XFER_PIO_0; 295 296 static const u32 timing133[] = { 297 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */ 298 0x0C266000, 299 0x04263000, 300 0x0C0A3000, 301 0x05093000 302 }; 303 static const u32 timing100[] = { 304 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */ 305 0x091C4000, 306 0x031C2000, 307 0x09072000, 308 0x04062000 309 }; 310 311 sis_set_fifo(ap, adev); 312 313 port = sis_port_base(adev); 314 pci_read_config_dword(pdev, port, &t1); 315 t1 &= 0xC0C00FFF; /* Mask out timing */ 316 317 if (t1 & 0x08) /* 100 or 133 ? */ 318 t1 |= timing133[speed]; 319 else 320 t1 |= timing100[speed]; 321 pci_write_config_byte(pdev, port, t1); 322 } 323 324 /** 325 * sis_old_set_dmamode - Initialize host controller PATA DMA timings 326 * @ap: Port whose timings we are configuring 327 * @adev: Device to program 328 * 329 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 330 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike 331 * the old ide/pci driver. 332 * 333 * LOCKING: 334 * None (inherited from caller). 335 */ 336 337 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev) 338 { 339 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 340 int speed = adev->dma_mode - XFER_MW_DMA_0; 341 int drive_pci = sis_old_port_base(adev); 342 u16 timing; 343 344 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 }; 345 static const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 }; 346 347 pci_read_config_word(pdev, drive_pci, &timing); 348 349 if (adev->dma_mode < XFER_UDMA_0) { 350 /* bits 3-0 hold recovery timing bits 8-10 active timing and 351 the higher bits are dependent on the device */ 352 timing &= ~0x870F; 353 timing |= mwdma_bits[speed]; 354 } else { 355 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */ 356 speed = adev->dma_mode - XFER_UDMA_0; 357 timing &= ~0x6000; 358 timing |= udma_bits[speed]; 359 } 360 pci_write_config_word(pdev, drive_pci, timing); 361 } 362 363 /** 364 * sis_66_set_dmamode - Initialize host controller PATA DMA timings 365 * @ap: Port whose timings we are configuring 366 * @adev: Device to program 367 * 368 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 369 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike 370 * the old ide/pci driver. 371 * 372 * LOCKING: 373 * None (inherited from caller). 374 */ 375 376 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev) 377 { 378 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 379 int speed = adev->dma_mode - XFER_MW_DMA_0; 380 int drive_pci = sis_old_port_base(adev); 381 u16 timing; 382 383 /* MWDMA 0-2 and UDMA 0-5 */ 384 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 }; 385 static const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 }; 386 387 pci_read_config_word(pdev, drive_pci, &timing); 388 389 if (adev->dma_mode < XFER_UDMA_0) { 390 /* bits 3-0 hold recovery timing bits 8-10 active timing and 391 the higher bits are dependent on the device, bit 15 udma */ 392 timing &= ~0x870F; 393 timing |= mwdma_bits[speed]; 394 } else { 395 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */ 396 speed = adev->dma_mode - XFER_UDMA_0; 397 timing &= ~0xF000; 398 timing |= udma_bits[speed]; 399 } 400 pci_write_config_word(pdev, drive_pci, timing); 401 } 402 403 /** 404 * sis_100_set_dmamode - Initialize host controller PATA DMA timings 405 * @ap: Port whose timings we are configuring 406 * @adev: Device to program 407 * 408 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 409 * Handles UDMA66 and early UDMA100 devices. 410 * 411 * LOCKING: 412 * None (inherited from caller). 413 */ 414 415 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev) 416 { 417 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 418 int speed = adev->dma_mode - XFER_MW_DMA_0; 419 int drive_pci = sis_old_port_base(adev); 420 u8 timing; 421 422 static const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81}; 423 424 pci_read_config_byte(pdev, drive_pci + 1, &timing); 425 426 if (adev->dma_mode < XFER_UDMA_0) { 427 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */ 428 } else { 429 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */ 430 speed = adev->dma_mode - XFER_UDMA_0; 431 timing &= ~0x8F; 432 timing |= udma_bits[speed]; 433 } 434 pci_write_config_byte(pdev, drive_pci + 1, timing); 435 } 436 437 /** 438 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings 439 * @ap: Port whose timings we are configuring 440 * @adev: Device to program 441 * 442 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 443 * Handles early SiS 961 bridges. 444 * 445 * LOCKING: 446 * None (inherited from caller). 447 */ 448 449 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev) 450 { 451 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 452 int speed = adev->dma_mode - XFER_MW_DMA_0; 453 int drive_pci = sis_old_port_base(adev); 454 u8 timing; 455 /* Low 4 bits are timing */ 456 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81}; 457 458 pci_read_config_byte(pdev, drive_pci + 1, &timing); 459 460 if (adev->dma_mode < XFER_UDMA_0) { 461 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */ 462 } else { 463 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */ 464 speed = adev->dma_mode - XFER_UDMA_0; 465 timing &= ~0x8F; 466 timing |= udma_bits[speed]; 467 } 468 pci_write_config_byte(pdev, drive_pci + 1, timing); 469 } 470 471 /** 472 * sis_133_set_dmamode - Initialize host controller PATA DMA timings 473 * @ap: Port whose timings we are configuring 474 * @adev: Device to program 475 * 476 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 477 * 478 * LOCKING: 479 * None (inherited from caller). 480 */ 481 482 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev) 483 { 484 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 485 int port; 486 u32 t1; 487 488 port = sis_port_base(adev); 489 pci_read_config_dword(pdev, port, &t1); 490 491 if (adev->dma_mode < XFER_UDMA_0) { 492 /* Recovery << 24 | Act << 16 | Ini << 12, like PIO modes */ 493 static const u32 timing_u100[] = { 0x19154000, 0x06072000, 0x04062000 }; 494 static const u32 timing_u133[] = { 0x221C6000, 0x0C0A3000, 0x05093000 }; 495 int speed = adev->dma_mode - XFER_MW_DMA_0; 496 497 t1 &= 0xC0C00FFF; 498 /* disable UDMA */ 499 t1 &= ~0x00000004; 500 if (t1 & 0x08) 501 t1 |= timing_u133[speed]; 502 else 503 t1 |= timing_u100[speed]; 504 } else { 505 /* bits 4- cycle time 8 - cvs time */ 506 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 }; 507 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 }; 508 int speed = adev->dma_mode - XFER_UDMA_0; 509 510 t1 &= ~0x00000FF0; 511 /* enable UDMA */ 512 t1 |= 0x00000004; 513 if (t1 & 0x08) 514 t1 |= timing_u133[speed]; 515 else 516 t1 |= timing_u100[speed]; 517 } 518 pci_write_config_dword(pdev, port, t1); 519 } 520 521 /** 522 * sis_133_mode_filter - mode selection filter 523 * @adev: ATA device 524 * 525 * Block UDMA6 on devices that do not support it. 526 */ 527 528 static unsigned long sis_133_mode_filter(struct ata_device *adev, unsigned long mask) 529 { 530 struct ata_port *ap = adev->link->ap; 531 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 532 int port = sis_port_base(adev); 533 u32 t1; 534 535 pci_read_config_dword(pdev, port, &t1); 536 /* if ATA133 is disabled, mask it out */ 537 if (!(t1 & 0x08)) 538 mask &= ~(0xC0 << ATA_SHIFT_UDMA); 539 return mask; 540 } 541 542 static struct scsi_host_template sis_sht = { 543 ATA_BMDMA_SHT(DRV_NAME), 544 }; 545 546 static struct ata_port_operations sis_133_for_sata_ops = { 547 .inherits = &ata_bmdma_port_ops, 548 .set_piomode = sis_133_set_piomode, 549 .set_dmamode = sis_133_set_dmamode, 550 .cable_detect = sis_133_cable_detect, 551 }; 552 553 static struct ata_port_operations sis_base_ops = { 554 .inherits = &ata_bmdma_port_ops, 555 .prereset = sis_pre_reset, 556 }; 557 558 static struct ata_port_operations sis_133_ops = { 559 .inherits = &sis_base_ops, 560 .set_piomode = sis_133_set_piomode, 561 .set_dmamode = sis_133_set_dmamode, 562 .cable_detect = sis_133_cable_detect, 563 .mode_filter = sis_133_mode_filter, 564 }; 565 566 static struct ata_port_operations sis_133_early_ops = { 567 .inherits = &sis_base_ops, 568 .set_piomode = sis_100_set_piomode, 569 .set_dmamode = sis_133_early_set_dmamode, 570 .cable_detect = sis_66_cable_detect, 571 }; 572 573 static struct ata_port_operations sis_100_ops = { 574 .inherits = &sis_base_ops, 575 .set_piomode = sis_100_set_piomode, 576 .set_dmamode = sis_100_set_dmamode, 577 .cable_detect = sis_66_cable_detect, 578 }; 579 580 static struct ata_port_operations sis_66_ops = { 581 .inherits = &sis_base_ops, 582 .set_piomode = sis_old_set_piomode, 583 .set_dmamode = sis_66_set_dmamode, 584 .cable_detect = sis_66_cable_detect, 585 }; 586 587 static struct ata_port_operations sis_old_ops = { 588 .inherits = &sis_base_ops, 589 .set_piomode = sis_old_set_piomode, 590 .set_dmamode = sis_old_set_dmamode, 591 .cable_detect = ata_cable_40wire, 592 }; 593 594 static const struct ata_port_info sis_info = { 595 .flags = ATA_FLAG_SLAVE_POSS, 596 .pio_mask = ATA_PIO4, 597 .mwdma_mask = ATA_MWDMA2, 598 /* No UDMA */ 599 .port_ops = &sis_old_ops, 600 }; 601 static const struct ata_port_info sis_info33 = { 602 .flags = ATA_FLAG_SLAVE_POSS, 603 .pio_mask = ATA_PIO4, 604 .mwdma_mask = ATA_MWDMA2, 605 .udma_mask = ATA_UDMA2, 606 .port_ops = &sis_old_ops, 607 }; 608 static const struct ata_port_info sis_info66 = { 609 .flags = ATA_FLAG_SLAVE_POSS, 610 .pio_mask = ATA_PIO4, 611 /* No MWDMA */ 612 .udma_mask = ATA_UDMA4, 613 .port_ops = &sis_66_ops, 614 }; 615 static const struct ata_port_info sis_info100 = { 616 .flags = ATA_FLAG_SLAVE_POSS, 617 .pio_mask = ATA_PIO4, 618 /* No MWDMA */ 619 .udma_mask = ATA_UDMA5, 620 .port_ops = &sis_100_ops, 621 }; 622 static const struct ata_port_info sis_info100_early = { 623 .flags = ATA_FLAG_SLAVE_POSS, 624 .pio_mask = ATA_PIO4, 625 /* No MWDMA */ 626 .udma_mask = ATA_UDMA5, 627 .port_ops = &sis_66_ops, 628 }; 629 static const struct ata_port_info sis_info133 = { 630 .flags = ATA_FLAG_SLAVE_POSS, 631 .pio_mask = ATA_PIO4, 632 .mwdma_mask = ATA_MWDMA2, 633 .udma_mask = ATA_UDMA6, 634 .port_ops = &sis_133_ops, 635 }; 636 const struct ata_port_info sis_info133_for_sata = { 637 .flags = ATA_FLAG_SLAVE_POSS, 638 .pio_mask = ATA_PIO4, 639 /* No MWDMA */ 640 .udma_mask = ATA_UDMA6, 641 .port_ops = &sis_133_for_sata_ops, 642 }; 643 static const struct ata_port_info sis_info133_early = { 644 .flags = ATA_FLAG_SLAVE_POSS, 645 .pio_mask = ATA_PIO4, 646 /* No MWDMA */ 647 .udma_mask = ATA_UDMA6, 648 .port_ops = &sis_133_early_ops, 649 }; 650 651 /* Privately shared with the SiS180 SATA driver, not for use elsewhere */ 652 EXPORT_SYMBOL_GPL(sis_info133_for_sata); 653 654 static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis) 655 { 656 u16 regw; 657 u8 reg; 658 659 if (sis->info == &sis_info133) { 660 pci_read_config_word(pdev, 0x50, ®w); 661 if (regw & 0x08) 662 pci_write_config_word(pdev, 0x50, regw & ~0x08); 663 pci_read_config_word(pdev, 0x52, ®w); 664 if (regw & 0x08) 665 pci_write_config_word(pdev, 0x52, regw & ~0x08); 666 return; 667 } 668 669 if (sis->info == &sis_info133_early || sis->info == &sis_info100) { 670 /* Fix up latency */ 671 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80); 672 /* Set compatibility bit */ 673 pci_read_config_byte(pdev, 0x49, ®); 674 if (!(reg & 0x01)) 675 pci_write_config_byte(pdev, 0x49, reg | 0x01); 676 return; 677 } 678 679 if (sis->info == &sis_info66 || sis->info == &sis_info100_early) { 680 /* Fix up latency */ 681 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80); 682 /* Set compatibility bit */ 683 pci_read_config_byte(pdev, 0x52, ®); 684 if (!(reg & 0x04)) 685 pci_write_config_byte(pdev, 0x52, reg | 0x04); 686 return; 687 } 688 689 if (sis->info == &sis_info33) { 690 pci_read_config_byte(pdev, PCI_CLASS_PROG, ®); 691 if (( reg & 0x0F ) != 0x00) 692 pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0); 693 /* Fall through to ATA16 fixup below */ 694 } 695 696 if (sis->info == &sis_info || sis->info == &sis_info33) { 697 /* force per drive recovery and active timings 698 needed on ATA_33 and below chips */ 699 pci_read_config_byte(pdev, 0x52, ®); 700 if (!(reg & 0x08)) 701 pci_write_config_byte(pdev, 0x52, reg|0x08); 702 return; 703 } 704 705 BUG(); 706 } 707 708 /** 709 * sis_init_one - Register SiS ATA PCI device with kernel services 710 * @pdev: PCI device to register 711 * @ent: Entry in sis_pci_tbl matching with @pdev 712 * 713 * Called from kernel PCI layer. We probe for combined mode (sigh), 714 * and then hand over control to libata, for it to do the rest. 715 * 716 * LOCKING: 717 * Inherited from PCI layer (may sleep). 718 * 719 * RETURNS: 720 * Zero on success, or -ERRNO value. 721 */ 722 723 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) 724 { 725 const struct ata_port_info *ppi[] = { NULL, NULL }; 726 struct pci_dev *host = NULL; 727 struct sis_chipset *chipset = NULL; 728 struct sis_chipset *sets; 729 int rc; 730 731 static struct sis_chipset sis_chipsets[] = { 732 733 { 0x0968, &sis_info133 }, 734 { 0x0966, &sis_info133 }, 735 { 0x0965, &sis_info133 }, 736 { 0x0745, &sis_info100 }, 737 { 0x0735, &sis_info100 }, 738 { 0x0733, &sis_info100 }, 739 { 0x0635, &sis_info100 }, 740 { 0x0633, &sis_info100 }, 741 742 { 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */ 743 { 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */ 744 745 { 0x0640, &sis_info66 }, 746 { 0x0630, &sis_info66 }, 747 { 0x0620, &sis_info66 }, 748 { 0x0540, &sis_info66 }, 749 { 0x0530, &sis_info66 }, 750 751 { 0x5600, &sis_info33 }, 752 { 0x5598, &sis_info33 }, 753 { 0x5597, &sis_info33 }, 754 { 0x5591, &sis_info33 }, 755 { 0x5582, &sis_info33 }, 756 { 0x5581, &sis_info33 }, 757 758 { 0x5596, &sis_info }, 759 { 0x5571, &sis_info }, 760 { 0x5517, &sis_info }, 761 { 0x5511, &sis_info }, 762 763 {0} 764 }; 765 static struct sis_chipset sis133_early = { 766 0x0, &sis_info133_early 767 }; 768 static struct sis_chipset sis133 = { 769 0x0, &sis_info133 770 }; 771 static struct sis_chipset sis100_early = { 772 0x0, &sis_info100_early 773 }; 774 static struct sis_chipset sis100 = { 775 0x0, &sis_info100 776 }; 777 778 ata_print_version_once(&pdev->dev, DRV_VERSION); 779 780 rc = pcim_enable_device(pdev); 781 if (rc) 782 return rc; 783 784 /* We have to find the bridge first */ 785 for (sets = &sis_chipsets[0]; sets->device; sets++) { 786 host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL); 787 if (host != NULL) { 788 chipset = sets; /* Match found */ 789 if (sets->device == 0x630) { /* SIS630 */ 790 if (host->revision >= 0x30) /* 630 ET */ 791 chipset = &sis100_early; 792 } 793 break; 794 } 795 } 796 797 /* Look for concealed bridges */ 798 if (chipset == NULL) { 799 /* Second check */ 800 u32 idemisc; 801 u16 trueid; 802 803 /* Disable ID masking and register remapping then 804 see what the real ID is */ 805 806 pci_read_config_dword(pdev, 0x54, &idemisc); 807 pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff); 808 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid); 809 pci_write_config_dword(pdev, 0x54, idemisc); 810 811 switch(trueid) { 812 case 0x5518: /* SIS 962/963 */ 813 dev_info(&pdev->dev, 814 "SiS 962/963 MuTIOL IDE UDMA133 controller\n"); 815 chipset = &sis133; 816 if ((idemisc & 0x40000000) == 0) { 817 pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000); 818 dev_info(&pdev->dev, 819 "Switching to 5513 register mapping\n"); 820 } 821 break; 822 case 0x0180: /* SIS 965/965L */ 823 chipset = &sis133; 824 break; 825 case 0x1180: /* SIS 966/966L */ 826 chipset = &sis133; 827 break; 828 } 829 } 830 831 /* Further check */ 832 if (chipset == NULL) { 833 struct pci_dev *lpc_bridge; 834 u16 trueid; 835 u8 prefctl; 836 u8 idecfg; 837 838 /* Try the second unmasking technique */ 839 pci_read_config_byte(pdev, 0x4a, &idecfg); 840 pci_write_config_byte(pdev, 0x4a, idecfg | 0x10); 841 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid); 842 pci_write_config_byte(pdev, 0x4a, idecfg); 843 844 switch(trueid) { 845 case 0x5517: 846 lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */ 847 if (lpc_bridge == NULL) 848 break; 849 pci_read_config_byte(pdev, 0x49, &prefctl); 850 pci_dev_put(lpc_bridge); 851 852 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) { 853 chipset = &sis133_early; 854 break; 855 } 856 chipset = &sis100; 857 break; 858 } 859 } 860 pci_dev_put(host); 861 862 /* No chipset info, no support */ 863 if (chipset == NULL) 864 return -ENODEV; 865 866 ppi[0] = chipset->info; 867 868 sis_fixup(pdev, chipset); 869 870 return ata_pci_bmdma_init_one(pdev, ppi, &sis_sht, chipset, 0); 871 } 872 873 #ifdef CONFIG_PM 874 static int sis_reinit_one(struct pci_dev *pdev) 875 { 876 struct ata_host *host = dev_get_drvdata(&pdev->dev); 877 int rc; 878 879 rc = ata_pci_device_do_resume(pdev); 880 if (rc) 881 return rc; 882 883 sis_fixup(pdev, host->private_data); 884 885 ata_host_resume(host); 886 return 0; 887 } 888 #endif 889 890 static const struct pci_device_id sis_pci_tbl[] = { 891 { PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */ 892 { PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */ 893 { PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */ 894 895 { } 896 }; 897 898 static struct pci_driver sis_pci_driver = { 899 .name = DRV_NAME, 900 .id_table = sis_pci_tbl, 901 .probe = sis_init_one, 902 .remove = ata_pci_remove_one, 903 #ifdef CONFIG_PM 904 .suspend = ata_pci_device_suspend, 905 .resume = sis_reinit_one, 906 #endif 907 }; 908 909 static int __init sis_init(void) 910 { 911 return pci_register_driver(&sis_pci_driver); 912 } 913 914 static void __exit sis_exit(void) 915 { 916 pci_unregister_driver(&sis_pci_driver); 917 } 918 919 module_init(sis_init); 920 module_exit(sis_exit); 921 922 MODULE_AUTHOR("Alan Cox"); 923 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA"); 924 MODULE_LICENSE("GPL"); 925 MODULE_DEVICE_TABLE(pci, sis_pci_tbl); 926 MODULE_VERSION(DRV_VERSION); 927 928