1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * pata_sis.c - SiS ATA driver 4 * 5 * (C) 2005 Red Hat 6 * (C) 2007,2009 Bartlomiej Zolnierkiewicz 7 * 8 * Based upon linux/drivers/ide/pci/sis5513.c 9 * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org> 10 * Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer 11 * Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz> 12 * SiS Taiwan : for direct support and hardware. 13 * Daniela Engert : for initial ATA100 advices and numerous others. 14 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt : 15 * for checking code correctness, providing patches. 16 * Original tests and design on the SiS620 chipset. 17 * ATA100 tests and design on the SiS735 chipset. 18 * ATA16/33 support from specs 19 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw> 20 * 21 * 22 * TODO 23 * Check MWDMA on drives that don't support MWDMA speed pio cycles ? 24 * More Testing 25 */ 26 27 #include <linux/kernel.h> 28 #include <linux/module.h> 29 #include <linux/pci.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 sis_short_ata40(struct pci_dev * dev)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 sis_old_port_base(struct ata_device * adev)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 sis_port_base(struct ata_device * adev)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 * 118 * Perform cable detection for the later UDMA133 capable 119 * SiS chipset. 120 */ 121 sis_133_cable_detect(struct ata_port * ap)122 static int sis_133_cable_detect(struct ata_port *ap) 123 { 124 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 125 u16 tmp; 126 127 /* The top bit of this register is the cable detect bit */ 128 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp); 129 if ((tmp & 0x8000) && !sis_short_ata40(pdev)) 130 return ATA_CBL_PATA40; 131 return ATA_CBL_PATA80; 132 } 133 134 /** 135 * sis_66_cable_detect - check for 40/80 pin 136 * @ap: Port 137 * 138 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133 139 * SiS IDE controllers. 140 */ 141 sis_66_cable_detect(struct ata_port * ap)142 static int sis_66_cable_detect(struct ata_port *ap) 143 { 144 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 145 u8 tmp; 146 147 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */ 148 pci_read_config_byte(pdev, 0x48, &tmp); 149 tmp >>= ap->port_no; 150 if ((tmp & 0x10) && !sis_short_ata40(pdev)) 151 return ATA_CBL_PATA40; 152 return ATA_CBL_PATA80; 153 } 154 155 156 /** 157 * sis_pre_reset - probe begin 158 * @link: ATA link 159 * @deadline: deadline jiffies for the operation 160 * 161 * Set up cable type and use generic probe init 162 */ 163 sis_pre_reset(struct ata_link * link,unsigned long deadline)164 static int sis_pre_reset(struct ata_link *link, unsigned long deadline) 165 { 166 static const struct pci_bits sis_enable_bits[] = { 167 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */ 168 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */ 169 }; 170 171 struct ata_port *ap = link->ap; 172 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 173 174 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no])) 175 return -ENOENT; 176 177 /* Clear the FIFO settings. We can't enable the FIFO until 178 we know we are poking at a disk */ 179 pci_write_config_byte(pdev, 0x4B, 0); 180 return ata_sff_prereset(link, deadline); 181 } 182 183 184 /** 185 * sis_set_fifo - Set RWP fifo bits for this device 186 * @ap: Port 187 * @adev: Device 188 * 189 * SIS chipsets implement prefetch/postwrite bits for each device 190 * on both channels. This functionality is not ATAPI compatible and 191 * must be configured according to the class of device present 192 */ 193 sis_set_fifo(struct ata_port * ap,struct ata_device * adev)194 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev) 195 { 196 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 197 u8 fifoctrl; 198 u8 mask = 0x11; 199 200 mask <<= (2 * ap->port_no); 201 mask <<= adev->devno; 202 203 /* This holds various bits including the FIFO control */ 204 pci_read_config_byte(pdev, 0x4B, &fifoctrl); 205 fifoctrl &= ~mask; 206 207 /* Enable for ATA (disk) only */ 208 if (adev->class == ATA_DEV_ATA) 209 fifoctrl |= mask; 210 pci_write_config_byte(pdev, 0x4B, fifoctrl); 211 } 212 213 /** 214 * sis_old_set_piomode - Initialize host controller PATA PIO timings 215 * @ap: Port whose timings we are configuring 216 * @adev: Device we are configuring for. 217 * 218 * Set PIO mode for device, in host controller PCI config space. This 219 * function handles PIO set up for all chips that are pre ATA100 and 220 * also early ATA100 devices. 221 * 222 * LOCKING: 223 * None (inherited from caller). 224 */ 225 sis_old_set_piomode(struct ata_port * ap,struct ata_device * adev)226 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev) 227 { 228 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 229 int port = sis_old_port_base(adev); 230 u8 t1, t2; 231 int speed = adev->pio_mode - XFER_PIO_0; 232 233 static const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 }; 234 static const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 }; 235 236 sis_set_fifo(ap, adev); 237 238 pci_read_config_byte(pdev, port, &t1); 239 pci_read_config_byte(pdev, port + 1, &t2); 240 241 t1 &= ~0x0F; /* Clear active/recovery timings */ 242 t2 &= ~0x07; 243 244 t1 |= active[speed]; 245 t2 |= recovery[speed]; 246 247 pci_write_config_byte(pdev, port, t1); 248 pci_write_config_byte(pdev, port + 1, t2); 249 } 250 251 /** 252 * sis_100_set_piomode - Initialize host controller PATA PIO timings 253 * @ap: Port whose timings we are configuring 254 * @adev: Device we are configuring for. 255 * 256 * Set PIO mode for device, in host controller PCI config space. This 257 * function handles PIO set up for ATA100 devices and early ATA133. 258 * 259 * LOCKING: 260 * None (inherited from caller). 261 */ 262 sis_100_set_piomode(struct ata_port * ap,struct ata_device * adev)263 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev) 264 { 265 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 266 int port = sis_old_port_base(adev); 267 int speed = adev->pio_mode - XFER_PIO_0; 268 269 static const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 }; 270 271 sis_set_fifo(ap, adev); 272 273 pci_write_config_byte(pdev, port, actrec[speed]); 274 } 275 276 /** 277 * sis_133_set_piomode - Initialize host controller PATA PIO timings 278 * @ap: Port whose timings we are configuring 279 * @adev: Device we are configuring for. 280 * 281 * Set PIO mode for device, in host controller PCI config space. This 282 * function handles PIO set up for the later ATA133 devices. 283 * 284 * LOCKING: 285 * None (inherited from caller). 286 */ 287 sis_133_set_piomode(struct ata_port * ap,struct ata_device * adev)288 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev) 289 { 290 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 291 int port; 292 u32 t1; 293 int speed = adev->pio_mode - XFER_PIO_0; 294 295 static const u32 timing133[] = { 296 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */ 297 0x0C266000, 298 0x04263000, 299 0x0C0A3000, 300 0x05093000 301 }; 302 static const u32 timing100[] = { 303 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */ 304 0x091C4000, 305 0x031C2000, 306 0x09072000, 307 0x04062000 308 }; 309 310 sis_set_fifo(ap, adev); 311 312 port = sis_port_base(adev); 313 pci_read_config_dword(pdev, port, &t1); 314 t1 &= 0xC0C00FFF; /* Mask out timing */ 315 316 if (t1 & 0x08) /* 100 or 133 ? */ 317 t1 |= timing133[speed]; 318 else 319 t1 |= timing100[speed]; 320 pci_write_config_byte(pdev, port, t1); 321 } 322 323 /** 324 * sis_old_set_dmamode - Initialize host controller PATA DMA timings 325 * @ap: Port whose timings we are configuring 326 * @adev: Device to program 327 * 328 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 329 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike 330 * the old ide/pci driver. 331 * 332 * LOCKING: 333 * None (inherited from caller). 334 */ 335 sis_old_set_dmamode(struct ata_port * ap,struct ata_device * adev)336 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev) 337 { 338 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 339 int speed = adev->dma_mode - XFER_MW_DMA_0; 340 int drive_pci = sis_old_port_base(adev); 341 u16 timing; 342 343 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 }; 344 static const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 }; 345 346 pci_read_config_word(pdev, drive_pci, &timing); 347 348 if (adev->dma_mode < XFER_UDMA_0) { 349 /* bits 3-0 hold recovery timing bits 8-10 active timing and 350 the higher bits are dependent on the device */ 351 timing &= ~0x870F; 352 timing |= mwdma_bits[speed]; 353 } else { 354 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */ 355 speed = adev->dma_mode - XFER_UDMA_0; 356 timing &= ~0x6000; 357 timing |= udma_bits[speed]; 358 } 359 pci_write_config_word(pdev, drive_pci, timing); 360 } 361 362 /** 363 * sis_66_set_dmamode - Initialize host controller PATA DMA timings 364 * @ap: Port whose timings we are configuring 365 * @adev: Device to program 366 * 367 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 368 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike 369 * the old ide/pci driver. 370 * 371 * LOCKING: 372 * None (inherited from caller). 373 */ 374 sis_66_set_dmamode(struct ata_port * ap,struct ata_device * adev)375 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev) 376 { 377 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 378 int speed = adev->dma_mode - XFER_MW_DMA_0; 379 int drive_pci = sis_old_port_base(adev); 380 u16 timing; 381 382 /* MWDMA 0-2 and UDMA 0-5 */ 383 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 }; 384 static const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 }; 385 386 pci_read_config_word(pdev, drive_pci, &timing); 387 388 if (adev->dma_mode < XFER_UDMA_0) { 389 /* bits 3-0 hold recovery timing bits 8-10 active timing and 390 the higher bits are dependent on the device, bit 15 udma */ 391 timing &= ~0x870F; 392 timing |= mwdma_bits[speed]; 393 } else { 394 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */ 395 speed = adev->dma_mode - XFER_UDMA_0; 396 timing &= ~0xF000; 397 timing |= udma_bits[speed]; 398 } 399 pci_write_config_word(pdev, drive_pci, timing); 400 } 401 402 /** 403 * sis_100_set_dmamode - Initialize host controller PATA DMA timings 404 * @ap: Port whose timings we are configuring 405 * @adev: Device to program 406 * 407 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 408 * Handles UDMA66 and early UDMA100 devices. 409 * 410 * LOCKING: 411 * None (inherited from caller). 412 */ 413 sis_100_set_dmamode(struct ata_port * ap,struct ata_device * adev)414 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev) 415 { 416 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 417 int speed = adev->dma_mode - XFER_MW_DMA_0; 418 int drive_pci = sis_old_port_base(adev); 419 u8 timing; 420 421 static const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81}; 422 423 pci_read_config_byte(pdev, drive_pci + 1, &timing); 424 425 if (adev->dma_mode < XFER_UDMA_0) { 426 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */ 427 } else { 428 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */ 429 speed = adev->dma_mode - XFER_UDMA_0; 430 timing &= ~0x8F; 431 timing |= udma_bits[speed]; 432 } 433 pci_write_config_byte(pdev, drive_pci + 1, timing); 434 } 435 436 /** 437 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings 438 * @ap: Port whose timings we are configuring 439 * @adev: Device to program 440 * 441 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 442 * Handles early SiS 961 bridges. 443 * 444 * LOCKING: 445 * None (inherited from caller). 446 */ 447 sis_133_early_set_dmamode(struct ata_port * ap,struct ata_device * adev)448 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev) 449 { 450 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 451 int speed = adev->dma_mode - XFER_MW_DMA_0; 452 int drive_pci = sis_old_port_base(adev); 453 u8 timing; 454 /* Low 4 bits are timing */ 455 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81}; 456 457 pci_read_config_byte(pdev, drive_pci + 1, &timing); 458 459 if (adev->dma_mode < XFER_UDMA_0) { 460 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */ 461 } else { 462 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */ 463 speed = adev->dma_mode - XFER_UDMA_0; 464 timing &= ~0x8F; 465 timing |= udma_bits[speed]; 466 } 467 pci_write_config_byte(pdev, drive_pci + 1, timing); 468 } 469 470 /** 471 * sis_133_set_dmamode - Initialize host controller PATA DMA timings 472 * @ap: Port whose timings we are configuring 473 * @adev: Device to program 474 * 475 * Set UDMA/MWDMA mode for device, in host controller PCI config space. 476 * 477 * LOCKING: 478 * None (inherited from caller). 479 */ 480 sis_133_set_dmamode(struct ata_port * ap,struct ata_device * adev)481 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev) 482 { 483 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 484 int port; 485 u32 t1; 486 487 port = sis_port_base(adev); 488 pci_read_config_dword(pdev, port, &t1); 489 490 if (adev->dma_mode < XFER_UDMA_0) { 491 /* Recovery << 24 | Act << 16 | Ini << 12, like PIO modes */ 492 static const u32 timing_u100[] = { 0x19154000, 0x06072000, 0x04062000 }; 493 static const u32 timing_u133[] = { 0x221C6000, 0x0C0A3000, 0x05093000 }; 494 int speed = adev->dma_mode - XFER_MW_DMA_0; 495 496 t1 &= 0xC0C00FFF; 497 /* disable UDMA */ 498 t1 &= ~0x00000004; 499 if (t1 & 0x08) 500 t1 |= timing_u133[speed]; 501 else 502 t1 |= timing_u100[speed]; 503 } else { 504 /* bits 4- cycle time 8 - cvs time */ 505 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 }; 506 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 }; 507 int speed = adev->dma_mode - XFER_UDMA_0; 508 509 t1 &= ~0x00000FF0; 510 /* enable UDMA */ 511 t1 |= 0x00000004; 512 if (t1 & 0x08) 513 t1 |= timing_u133[speed]; 514 else 515 t1 |= timing_u100[speed]; 516 } 517 pci_write_config_dword(pdev, port, t1); 518 } 519 520 /** 521 * sis_133_mode_filter - mode selection filter 522 * @adev: ATA device 523 * @mask: received mask to manipulate and pass back 524 * 525 * Block UDMA6 on devices that do not support it. 526 */ 527 sis_133_mode_filter(struct ata_device * adev,unsigned int mask)528 static unsigned int sis_133_mode_filter(struct ata_device *adev, unsigned int 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 const 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 sis_fixup(struct pci_dev * pdev,struct sis_chipset * sis)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 sis_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)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_SLEEP sis_reinit_one(struct pci_dev * pdev)874 static int sis_reinit_one(struct pci_dev *pdev) 875 { 876 struct ata_host *host = pci_get_drvdata(pdev); 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_SLEEP 904 .suspend = ata_pci_device_suspend, 905 .resume = sis_reinit_one, 906 #endif 907 }; 908 909 module_pci_driver(sis_pci_driver); 910 911 MODULE_AUTHOR("Alan Cox"); 912 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA"); 913 MODULE_LICENSE("GPL"); 914 MODULE_DEVICE_TABLE(pci, sis_pci_tbl); 915 MODULE_VERSION(DRV_VERSION); 916