1 /* 2 * ata_piix.c - Intel PATA/SATA controllers 3 * 4 * Maintained by: Jeff Garzik <jgarzik@pobox.com> 5 * Please ALWAYS copy linux-ide@vger.kernel.org 6 * on emails. 7 * 8 * 9 * Copyright 2003-2005 Red Hat Inc 10 * Copyright 2003-2005 Jeff Garzik 11 * 12 * 13 * Copyright header from piix.c: 14 * 15 * Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer 16 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> 17 * Copyright (C) 2003 Red Hat Inc 18 * 19 * 20 * This program is free software; you can redistribute it and/or modify 21 * it under the terms of the GNU General Public License as published by 22 * the Free Software Foundation; either version 2, or (at your option) 23 * any later version. 24 * 25 * This program is distributed in the hope that it will be useful, 26 * but WITHOUT ANY WARRANTY; without even the implied warranty of 27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 28 * GNU General Public License for more details. 29 * 30 * You should have received a copy of the GNU General Public License 31 * along with this program; see the file COPYING. If not, write to 32 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 33 * 34 * 35 * libata documentation is available via 'make {ps|pdf}docs', 36 * as Documentation/DocBook/libata.* 37 * 38 * Hardware documentation available at http://developer.intel.com/ 39 * 40 * Documentation 41 * Publicly available from Intel web site. Errata documentation 42 * is also publicly available. As an aide to anyone hacking on this 43 * driver the list of errata that are relevant is below, going back to 44 * PIIX4. Older device documentation is now a bit tricky to find. 45 * 46 * The chipsets all follow very much the same design. The original Triton 47 * series chipsets do _not_ support independent device timings, but this 48 * is fixed in Triton II. With the odd mobile exception the chips then 49 * change little except in gaining more modes until SATA arrives. This 50 * driver supports only the chips with independent timing (that is those 51 * with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix 52 * for the early chip drivers. 53 * 54 * Errata of note: 55 * 56 * Unfixable 57 * PIIX4 errata #9 - Only on ultra obscure hw 58 * ICH3 errata #13 - Not observed to affect real hw 59 * by Intel 60 * 61 * Things we must deal with 62 * PIIX4 errata #10 - BM IDE hang with non UDMA 63 * (must stop/start dma to recover) 64 * 440MX errata #15 - As PIIX4 errata #10 65 * PIIX4 errata #15 - Must not read control registers 66 * during a PIO transfer 67 * 440MX errata #13 - As PIIX4 errata #15 68 * ICH2 errata #21 - DMA mode 0 doesn't work right 69 * ICH0/1 errata #55 - As ICH2 errata #21 70 * ICH2 spec c #9 - Extra operations needed to handle 71 * drive hotswap [NOT YET SUPPORTED] 72 * ICH2 spec c #20 - IDE PRD must not cross a 64K boundary 73 * and must be dword aligned 74 * ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3 75 * ICH7 errata #16 - MWDMA1 timings are incorrect 76 * 77 * Should have been BIOS fixed: 78 * 450NX: errata #19 - DMA hangs on old 450NX 79 * 450NX: errata #20 - DMA hangs on old 450NX 80 * 450NX: errata #25 - Corruption with DMA on old 450NX 81 * ICH3 errata #15 - IDE deadlock under high load 82 * (BIOS must set dev 31 fn 0 bit 23) 83 * ICH3 errata #18 - Don't use native mode 84 */ 85 86 #include <linux/kernel.h> 87 #include <linux/module.h> 88 #include <linux/pci.h> 89 #include <linux/init.h> 90 #include <linux/blkdev.h> 91 #include <linux/delay.h> 92 #include <linux/device.h> 93 #include <linux/gfp.h> 94 #include <scsi/scsi_host.h> 95 #include <linux/libata.h> 96 #include <linux/dmi.h> 97 98 #define DRV_NAME "ata_piix" 99 #define DRV_VERSION "2.13" 100 101 enum { 102 PIIX_IOCFG = 0x54, /* IDE I/O configuration register */ 103 ICH5_PMR = 0x90, /* port mapping register */ 104 ICH5_PCS = 0x92, /* port control and status */ 105 PIIX_SIDPR_BAR = 5, 106 PIIX_SIDPR_LEN = 16, 107 PIIX_SIDPR_IDX = 0, 108 PIIX_SIDPR_DATA = 4, 109 110 PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */ 111 PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */ 112 113 PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS, 114 PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR, 115 116 PIIX_FLAG_PIO16 = (1 << 30), /*support 16bit PIO only*/ 117 118 PIIX_80C_PRI = (1 << 5) | (1 << 4), 119 PIIX_80C_SEC = (1 << 7) | (1 << 6), 120 121 /* constants for mapping table */ 122 P0 = 0, /* port 0 */ 123 P1 = 1, /* port 1 */ 124 P2 = 2, /* port 2 */ 125 P3 = 3, /* port 3 */ 126 IDE = -1, /* IDE */ 127 NA = -2, /* not available */ 128 RV = -3, /* reserved */ 129 130 PIIX_AHCI_DEVICE = 6, 131 132 /* host->flags bits */ 133 PIIX_HOST_BROKEN_SUSPEND = (1 << 24), 134 }; 135 136 enum piix_controller_ids { 137 /* controller IDs */ 138 piix_pata_mwdma, /* PIIX3 MWDMA only */ 139 piix_pata_33, /* PIIX4 at 33Mhz */ 140 ich_pata_33, /* ICH up to UDMA 33 only */ 141 ich_pata_66, /* ICH up to 66 Mhz */ 142 ich_pata_100, /* ICH up to UDMA 100 */ 143 ich_pata_100_nomwdma1, /* ICH up to UDMA 100 but with no MWDMA1*/ 144 ich5_sata, 145 ich6_sata, 146 ich6m_sata, 147 ich8_sata, 148 ich8_2port_sata, 149 ich8m_apple_sata, /* locks up on second port enable */ 150 tolapai_sata, 151 piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */ 152 ich8_sata_snb, 153 }; 154 155 struct piix_map_db { 156 const u32 mask; 157 const u16 port_enable; 158 const int map[][4]; 159 }; 160 161 struct piix_host_priv { 162 const int *map; 163 u32 saved_iocfg; 164 void __iomem *sidpr; 165 }; 166 167 static int piix_init_one(struct pci_dev *pdev, 168 const struct pci_device_id *ent); 169 static void piix_remove_one(struct pci_dev *pdev); 170 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline); 171 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev); 172 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev); 173 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev); 174 static int ich_pata_cable_detect(struct ata_port *ap); 175 static u8 piix_vmw_bmdma_status(struct ata_port *ap); 176 static int piix_sidpr_scr_read(struct ata_link *link, 177 unsigned int reg, u32 *val); 178 static int piix_sidpr_scr_write(struct ata_link *link, 179 unsigned int reg, u32 val); 180 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, 181 unsigned hints); 182 static bool piix_irq_check(struct ata_port *ap); 183 static int piix_port_start(struct ata_port *ap); 184 #ifdef CONFIG_PM 185 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg); 186 static int piix_pci_device_resume(struct pci_dev *pdev); 187 #endif 188 189 static unsigned int in_module_init = 1; 190 191 static const struct pci_device_id piix_pci_tbl[] = { 192 /* Intel PIIX3 for the 430HX etc */ 193 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma }, 194 /* VMware ICH4 */ 195 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw }, 196 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */ 197 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */ 198 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 199 /* Intel PIIX4 */ 200 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 201 /* Intel PIIX4 */ 202 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 203 /* Intel PIIX */ 204 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 205 /* Intel ICH (i810, i815, i840) UDMA 66*/ 206 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 }, 207 /* Intel ICH0 : UDMA 33*/ 208 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 }, 209 /* Intel ICH2M */ 210 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 211 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */ 212 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 213 /* Intel ICH3M */ 214 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 215 /* Intel ICH3 (E7500/1) UDMA 100 */ 216 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 217 /* Intel ICH4-L */ 218 { 0x8086, 0x24C1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 219 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */ 220 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 221 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 222 /* Intel ICH5 */ 223 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 224 /* C-ICH (i810E2) */ 225 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 226 /* ESB (855GME/875P + 6300ESB) UDMA 100 */ 227 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 228 /* ICH6 (and 6) (i915) UDMA 100 */ 229 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 230 /* ICH7/7-R (i945, i975) UDMA 100*/ 231 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 }, 232 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 }, 233 /* ICH8 Mobile PATA Controller */ 234 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 235 236 /* SATA ports */ 237 238 /* 82801EB (ICH5) */ 239 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 240 /* 82801EB (ICH5) */ 241 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 242 /* 6300ESB (ICH5 variant with broken PCS present bits) */ 243 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 244 /* 6300ESB pretending RAID */ 245 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 246 /* 82801FB/FW (ICH6/ICH6W) */ 247 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 248 /* 82801FR/FRW (ICH6R/ICH6RW) */ 249 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 250 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented). 251 * Attach iff the controller is in IDE mode. */ 252 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 253 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata }, 254 /* 82801GB/GR/GH (ICH7, identical to ICH6) */ 255 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 256 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */ 257 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata }, 258 /* Enterprise Southbridge 2 (631xESB/632xESB) */ 259 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 260 /* SATA Controller 1 IDE (ICH8) */ 261 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 262 /* SATA Controller 2 IDE (ICH8) */ 263 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 264 /* Mobile SATA Controller IDE (ICH8M), Apple */ 265 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata }, 266 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata }, 267 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata }, 268 /* Mobile SATA Controller IDE (ICH8M) */ 269 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 270 /* SATA Controller IDE (ICH9) */ 271 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 272 /* SATA Controller IDE (ICH9) */ 273 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 274 /* SATA Controller IDE (ICH9) */ 275 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 276 /* SATA Controller IDE (ICH9M) */ 277 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 278 /* SATA Controller IDE (ICH9M) */ 279 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 280 /* SATA Controller IDE (ICH9M) */ 281 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 282 /* SATA Controller IDE (Tolapai) */ 283 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata }, 284 /* SATA Controller IDE (ICH10) */ 285 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 286 /* SATA Controller IDE (ICH10) */ 287 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 288 /* SATA Controller IDE (ICH10) */ 289 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 290 /* SATA Controller IDE (ICH10) */ 291 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 292 /* SATA Controller IDE (PCH) */ 293 { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 294 /* SATA Controller IDE (PCH) */ 295 { 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 296 /* SATA Controller IDE (PCH) */ 297 { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 298 /* SATA Controller IDE (PCH) */ 299 { 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 300 /* SATA Controller IDE (PCH) */ 301 { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 302 /* SATA Controller IDE (PCH) */ 303 { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 304 /* SATA Controller IDE (CPT) */ 305 { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 306 /* SATA Controller IDE (CPT) */ 307 { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 308 /* SATA Controller IDE (CPT) */ 309 { 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 310 /* SATA Controller IDE (CPT) */ 311 { 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 312 /* SATA Controller IDE (PBG) */ 313 { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 314 /* SATA Controller IDE (PBG) */ 315 { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 316 /* SATA Controller IDE (Panther Point) */ 317 { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 318 /* SATA Controller IDE (Panther Point) */ 319 { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 320 /* SATA Controller IDE (Panther Point) */ 321 { 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 322 /* SATA Controller IDE (Panther Point) */ 323 { 0x8086, 0x1e09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 324 { } /* terminate list */ 325 }; 326 327 static struct pci_driver piix_pci_driver = { 328 .name = DRV_NAME, 329 .id_table = piix_pci_tbl, 330 .probe = piix_init_one, 331 .remove = piix_remove_one, 332 #ifdef CONFIG_PM 333 .suspend = piix_pci_device_suspend, 334 .resume = piix_pci_device_resume, 335 #endif 336 }; 337 338 static struct scsi_host_template piix_sht = { 339 ATA_BMDMA_SHT(DRV_NAME), 340 }; 341 342 static struct ata_port_operations piix_sata_ops = { 343 .inherits = &ata_bmdma32_port_ops, 344 .sff_irq_check = piix_irq_check, 345 .port_start = piix_port_start, 346 }; 347 348 static struct ata_port_operations piix_pata_ops = { 349 .inherits = &piix_sata_ops, 350 .cable_detect = ata_cable_40wire, 351 .set_piomode = piix_set_piomode, 352 .set_dmamode = piix_set_dmamode, 353 .prereset = piix_pata_prereset, 354 }; 355 356 static struct ata_port_operations piix_vmw_ops = { 357 .inherits = &piix_pata_ops, 358 .bmdma_status = piix_vmw_bmdma_status, 359 }; 360 361 static struct ata_port_operations ich_pata_ops = { 362 .inherits = &piix_pata_ops, 363 .cable_detect = ich_pata_cable_detect, 364 .set_dmamode = ich_set_dmamode, 365 }; 366 367 static struct device_attribute *piix_sidpr_shost_attrs[] = { 368 &dev_attr_link_power_management_policy, 369 NULL 370 }; 371 372 static struct scsi_host_template piix_sidpr_sht = { 373 ATA_BMDMA_SHT(DRV_NAME), 374 .shost_attrs = piix_sidpr_shost_attrs, 375 }; 376 377 static struct ata_port_operations piix_sidpr_sata_ops = { 378 .inherits = &piix_sata_ops, 379 .hardreset = sata_std_hardreset, 380 .scr_read = piix_sidpr_scr_read, 381 .scr_write = piix_sidpr_scr_write, 382 .set_lpm = piix_sidpr_set_lpm, 383 }; 384 385 static const struct piix_map_db ich5_map_db = { 386 .mask = 0x7, 387 .port_enable = 0x3, 388 .map = { 389 /* PM PS SM SS MAP */ 390 { P0, NA, P1, NA }, /* 000b */ 391 { P1, NA, P0, NA }, /* 001b */ 392 { RV, RV, RV, RV }, 393 { RV, RV, RV, RV }, 394 { P0, P1, IDE, IDE }, /* 100b */ 395 { P1, P0, IDE, IDE }, /* 101b */ 396 { IDE, IDE, P0, P1 }, /* 110b */ 397 { IDE, IDE, P1, P0 }, /* 111b */ 398 }, 399 }; 400 401 static const struct piix_map_db ich6_map_db = { 402 .mask = 0x3, 403 .port_enable = 0xf, 404 .map = { 405 /* PM PS SM SS MAP */ 406 { P0, P2, P1, P3 }, /* 00b */ 407 { IDE, IDE, P1, P3 }, /* 01b */ 408 { P0, P2, IDE, IDE }, /* 10b */ 409 { RV, RV, RV, RV }, 410 }, 411 }; 412 413 static const struct piix_map_db ich6m_map_db = { 414 .mask = 0x3, 415 .port_enable = 0x5, 416 417 /* Map 01b isn't specified in the doc but some notebooks use 418 * it anyway. MAP 01b have been spotted on both ICH6M and 419 * ICH7M. 420 */ 421 .map = { 422 /* PM PS SM SS MAP */ 423 { P0, P2, NA, NA }, /* 00b */ 424 { IDE, IDE, P1, P3 }, /* 01b */ 425 { P0, P2, IDE, IDE }, /* 10b */ 426 { RV, RV, RV, RV }, 427 }, 428 }; 429 430 static const struct piix_map_db ich8_map_db = { 431 .mask = 0x3, 432 .port_enable = 0xf, 433 .map = { 434 /* PM PS SM SS MAP */ 435 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */ 436 { RV, RV, RV, RV }, 437 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */ 438 { RV, RV, RV, RV }, 439 }, 440 }; 441 442 static const struct piix_map_db ich8_2port_map_db = { 443 .mask = 0x3, 444 .port_enable = 0x3, 445 .map = { 446 /* PM PS SM SS MAP */ 447 { P0, NA, P1, NA }, /* 00b */ 448 { RV, RV, RV, RV }, /* 01b */ 449 { RV, RV, RV, RV }, /* 10b */ 450 { RV, RV, RV, RV }, 451 }, 452 }; 453 454 static const struct piix_map_db ich8m_apple_map_db = { 455 .mask = 0x3, 456 .port_enable = 0x1, 457 .map = { 458 /* PM PS SM SS MAP */ 459 { P0, NA, NA, NA }, /* 00b */ 460 { RV, RV, RV, RV }, 461 { P0, P2, IDE, IDE }, /* 10b */ 462 { RV, RV, RV, RV }, 463 }, 464 }; 465 466 static const struct piix_map_db tolapai_map_db = { 467 .mask = 0x3, 468 .port_enable = 0x3, 469 .map = { 470 /* PM PS SM SS MAP */ 471 { P0, NA, P1, NA }, /* 00b */ 472 { RV, RV, RV, RV }, /* 01b */ 473 { RV, RV, RV, RV }, /* 10b */ 474 { RV, RV, RV, RV }, 475 }, 476 }; 477 478 static const struct piix_map_db *piix_map_db_table[] = { 479 [ich5_sata] = &ich5_map_db, 480 [ich6_sata] = &ich6_map_db, 481 [ich6m_sata] = &ich6m_map_db, 482 [ich8_sata] = &ich8_map_db, 483 [ich8_2port_sata] = &ich8_2port_map_db, 484 [ich8m_apple_sata] = &ich8m_apple_map_db, 485 [tolapai_sata] = &tolapai_map_db, 486 [ich8_sata_snb] = &ich8_map_db, 487 }; 488 489 static struct ata_port_info piix_port_info[] = { 490 [piix_pata_mwdma] = /* PIIX3 MWDMA only */ 491 { 492 .flags = PIIX_PATA_FLAGS, 493 .pio_mask = ATA_PIO4, 494 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ 495 .port_ops = &piix_pata_ops, 496 }, 497 498 [piix_pata_33] = /* PIIX4 at 33MHz */ 499 { 500 .flags = PIIX_PATA_FLAGS, 501 .pio_mask = ATA_PIO4, 502 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ 503 .udma_mask = ATA_UDMA2, 504 .port_ops = &piix_pata_ops, 505 }, 506 507 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/ 508 { 509 .flags = PIIX_PATA_FLAGS, 510 .pio_mask = ATA_PIO4, 511 .mwdma_mask = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok */ 512 .udma_mask = ATA_UDMA2, 513 .port_ops = &ich_pata_ops, 514 }, 515 516 [ich_pata_66] = /* ICH controllers up to 66MHz */ 517 { 518 .flags = PIIX_PATA_FLAGS, 519 .pio_mask = ATA_PIO4, 520 .mwdma_mask = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */ 521 .udma_mask = ATA_UDMA4, 522 .port_ops = &ich_pata_ops, 523 }, 524 525 [ich_pata_100] = 526 { 527 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, 528 .pio_mask = ATA_PIO4, 529 .mwdma_mask = ATA_MWDMA12_ONLY, 530 .udma_mask = ATA_UDMA5, 531 .port_ops = &ich_pata_ops, 532 }, 533 534 [ich_pata_100_nomwdma1] = 535 { 536 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, 537 .pio_mask = ATA_PIO4, 538 .mwdma_mask = ATA_MWDMA2_ONLY, 539 .udma_mask = ATA_UDMA5, 540 .port_ops = &ich_pata_ops, 541 }, 542 543 [ich5_sata] = 544 { 545 .flags = PIIX_SATA_FLAGS, 546 .pio_mask = ATA_PIO4, 547 .mwdma_mask = ATA_MWDMA2, 548 .udma_mask = ATA_UDMA6, 549 .port_ops = &piix_sata_ops, 550 }, 551 552 [ich6_sata] = 553 { 554 .flags = PIIX_SATA_FLAGS, 555 .pio_mask = ATA_PIO4, 556 .mwdma_mask = ATA_MWDMA2, 557 .udma_mask = ATA_UDMA6, 558 .port_ops = &piix_sata_ops, 559 }, 560 561 [ich6m_sata] = 562 { 563 .flags = PIIX_SATA_FLAGS, 564 .pio_mask = ATA_PIO4, 565 .mwdma_mask = ATA_MWDMA2, 566 .udma_mask = ATA_UDMA6, 567 .port_ops = &piix_sata_ops, 568 }, 569 570 [ich8_sata] = 571 { 572 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR, 573 .pio_mask = ATA_PIO4, 574 .mwdma_mask = ATA_MWDMA2, 575 .udma_mask = ATA_UDMA6, 576 .port_ops = &piix_sata_ops, 577 }, 578 579 [ich8_2port_sata] = 580 { 581 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR, 582 .pio_mask = ATA_PIO4, 583 .mwdma_mask = ATA_MWDMA2, 584 .udma_mask = ATA_UDMA6, 585 .port_ops = &piix_sata_ops, 586 }, 587 588 [tolapai_sata] = 589 { 590 .flags = PIIX_SATA_FLAGS, 591 .pio_mask = ATA_PIO4, 592 .mwdma_mask = ATA_MWDMA2, 593 .udma_mask = ATA_UDMA6, 594 .port_ops = &piix_sata_ops, 595 }, 596 597 [ich8m_apple_sata] = 598 { 599 .flags = PIIX_SATA_FLAGS, 600 .pio_mask = ATA_PIO4, 601 .mwdma_mask = ATA_MWDMA2, 602 .udma_mask = ATA_UDMA6, 603 .port_ops = &piix_sata_ops, 604 }, 605 606 [piix_pata_vmw] = 607 { 608 .flags = PIIX_PATA_FLAGS, 609 .pio_mask = ATA_PIO4, 610 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ 611 .udma_mask = ATA_UDMA2, 612 .port_ops = &piix_vmw_ops, 613 }, 614 615 /* 616 * some Sandybridge chipsets have broken 32 mode up to now, 617 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592 618 */ 619 [ich8_sata_snb] = 620 { 621 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16, 622 .pio_mask = ATA_PIO4, 623 .mwdma_mask = ATA_MWDMA2, 624 .udma_mask = ATA_UDMA6, 625 .port_ops = &piix_sata_ops, 626 }, 627 628 }; 629 630 static struct pci_bits piix_enable_bits[] = { 631 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */ 632 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */ 633 }; 634 635 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik"); 636 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers"); 637 MODULE_LICENSE("GPL"); 638 MODULE_DEVICE_TABLE(pci, piix_pci_tbl); 639 MODULE_VERSION(DRV_VERSION); 640 641 struct ich_laptop { 642 u16 device; 643 u16 subvendor; 644 u16 subdevice; 645 }; 646 647 /* 648 * List of laptops that use short cables rather than 80 wire 649 */ 650 651 static const struct ich_laptop ich_laptop[] = { 652 /* devid, subvendor, subdev */ 653 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */ 654 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */ 655 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */ 656 { 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */ 657 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */ 658 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */ 659 { 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */ 660 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */ 661 { 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */ 662 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */ 663 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */ 664 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */ 665 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */ 666 { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */ 667 /* end marker */ 668 { 0, } 669 }; 670 671 static int piix_port_start(struct ata_port *ap) 672 { 673 if (!(ap->flags & PIIX_FLAG_PIO16)) 674 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE; 675 676 return ata_bmdma_port_start(ap); 677 } 678 679 /** 680 * ich_pata_cable_detect - Probe host controller cable detect info 681 * @ap: Port for which cable detect info is desired 682 * 683 * Read 80c cable indicator from ATA PCI device's PCI config 684 * register. This register is normally set by firmware (BIOS). 685 * 686 * LOCKING: 687 * None (inherited from caller). 688 */ 689 690 static int ich_pata_cable_detect(struct ata_port *ap) 691 { 692 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 693 struct piix_host_priv *hpriv = ap->host->private_data; 694 const struct ich_laptop *lap = &ich_laptop[0]; 695 u8 mask; 696 697 /* Check for specials - Acer Aspire 5602WLMi */ 698 while (lap->device) { 699 if (lap->device == pdev->device && 700 lap->subvendor == pdev->subsystem_vendor && 701 lap->subdevice == pdev->subsystem_device) 702 return ATA_CBL_PATA40_SHORT; 703 704 lap++; 705 } 706 707 /* check BIOS cable detect results */ 708 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC; 709 if ((hpriv->saved_iocfg & mask) == 0) 710 return ATA_CBL_PATA40; 711 return ATA_CBL_PATA80; 712 } 713 714 /** 715 * piix_pata_prereset - prereset for PATA host controller 716 * @link: Target link 717 * @deadline: deadline jiffies for the operation 718 * 719 * LOCKING: 720 * None (inherited from caller). 721 */ 722 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline) 723 { 724 struct ata_port *ap = link->ap; 725 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 726 727 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no])) 728 return -ENOENT; 729 return ata_sff_prereset(link, deadline); 730 } 731 732 static DEFINE_SPINLOCK(piix_lock); 733 734 static void piix_set_timings(struct ata_port *ap, struct ata_device *adev, 735 u8 pio) 736 { 737 struct pci_dev *dev = to_pci_dev(ap->host->dev); 738 unsigned long flags; 739 unsigned int is_slave = (adev->devno != 0); 740 unsigned int master_port= ap->port_no ? 0x42 : 0x40; 741 unsigned int slave_port = 0x44; 742 u16 master_data; 743 u8 slave_data; 744 u8 udma_enable; 745 int control = 0; 746 747 /* 748 * See Intel Document 298600-004 for the timing programing rules 749 * for ICH controllers. 750 */ 751 752 static const /* ISP RTC */ 753 u8 timings[][2] = { { 0, 0 }, 754 { 0, 0 }, 755 { 1, 0 }, 756 { 2, 1 }, 757 { 2, 3 }, }; 758 759 if (pio >= 2) 760 control |= 1; /* TIME1 enable */ 761 if (ata_pio_need_iordy(adev)) 762 control |= 2; /* IE enable */ 763 /* Intel specifies that the PPE functionality is for disk only */ 764 if (adev->class == ATA_DEV_ATA) 765 control |= 4; /* PPE enable */ 766 /* 767 * If the drive MWDMA is faster than it can do PIO then 768 * we must force PIO into PIO0 769 */ 770 if (adev->pio_mode < XFER_PIO_0 + pio) 771 /* Enable DMA timing only */ 772 control |= 8; /* PIO cycles in PIO0 */ 773 774 spin_lock_irqsave(&piix_lock, flags); 775 776 /* PIO configuration clears DTE unconditionally. It will be 777 * programmed in set_dmamode which is guaranteed to be called 778 * after set_piomode if any DMA mode is available. 779 */ 780 pci_read_config_word(dev, master_port, &master_data); 781 if (is_slave) { 782 /* clear TIME1|IE1|PPE1|DTE1 */ 783 master_data &= 0xff0f; 784 /* enable PPE1, IE1 and TIME1 as needed */ 785 master_data |= (control << 4); 786 pci_read_config_byte(dev, slave_port, &slave_data); 787 slave_data &= (ap->port_no ? 0x0f : 0xf0); 788 /* Load the timing nibble for this slave */ 789 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) 790 << (ap->port_no ? 4 : 0); 791 } else { 792 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */ 793 master_data &= 0xccf0; 794 /* Enable PPE, IE and TIME as appropriate */ 795 master_data |= control; 796 /* load ISP and RCT */ 797 master_data |= 798 (timings[pio][0] << 12) | 799 (timings[pio][1] << 8); 800 } 801 802 /* Enable SITRE (separate slave timing register) */ 803 master_data |= 0x4000; 804 pci_write_config_word(dev, master_port, master_data); 805 if (is_slave) 806 pci_write_config_byte(dev, slave_port, slave_data); 807 808 /* Ensure the UDMA bit is off - it will be turned back on if 809 UDMA is selected */ 810 811 if (ap->udma_mask) { 812 pci_read_config_byte(dev, 0x48, &udma_enable); 813 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno)); 814 pci_write_config_byte(dev, 0x48, udma_enable); 815 } 816 817 spin_unlock_irqrestore(&piix_lock, flags); 818 } 819 820 /** 821 * piix_set_piomode - Initialize host controller PATA PIO timings 822 * @ap: Port whose timings we are configuring 823 * @adev: Drive in question 824 * 825 * Set PIO mode for device, in host controller PCI config space. 826 * 827 * LOCKING: 828 * None (inherited from caller). 829 */ 830 831 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev) 832 { 833 piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0); 834 } 835 836 /** 837 * do_pata_set_dmamode - Initialize host controller PATA PIO timings 838 * @ap: Port whose timings we are configuring 839 * @adev: Drive in question 840 * @isich: set if the chip is an ICH device 841 * 842 * Set UDMA mode for device, in host controller PCI config space. 843 * 844 * LOCKING: 845 * None (inherited from caller). 846 */ 847 848 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich) 849 { 850 struct pci_dev *dev = to_pci_dev(ap->host->dev); 851 unsigned long flags; 852 u8 speed = adev->dma_mode; 853 int devid = adev->devno + 2 * ap->port_no; 854 u8 udma_enable = 0; 855 856 if (speed >= XFER_UDMA_0) { 857 unsigned int udma = speed - XFER_UDMA_0; 858 u16 udma_timing; 859 u16 ideconf; 860 int u_clock, u_speed; 861 862 spin_lock_irqsave(&piix_lock, flags); 863 864 pci_read_config_byte(dev, 0x48, &udma_enable); 865 866 /* 867 * UDMA is handled by a combination of clock switching and 868 * selection of dividers 869 * 870 * Handy rule: Odd modes are UDMATIMx 01, even are 02 871 * except UDMA0 which is 00 872 */ 873 u_speed = min(2 - (udma & 1), udma); 874 if (udma == 5) 875 u_clock = 0x1000; /* 100Mhz */ 876 else if (udma > 2) 877 u_clock = 1; /* 66Mhz */ 878 else 879 u_clock = 0; /* 33Mhz */ 880 881 udma_enable |= (1 << devid); 882 883 /* Load the CT/RP selection */ 884 pci_read_config_word(dev, 0x4A, &udma_timing); 885 udma_timing &= ~(3 << (4 * devid)); 886 udma_timing |= u_speed << (4 * devid); 887 pci_write_config_word(dev, 0x4A, udma_timing); 888 889 if (isich) { 890 /* Select a 33/66/100Mhz clock */ 891 pci_read_config_word(dev, 0x54, &ideconf); 892 ideconf &= ~(0x1001 << devid); 893 ideconf |= u_clock << devid; 894 /* For ICH or later we should set bit 10 for better 895 performance (WR_PingPong_En) */ 896 pci_write_config_word(dev, 0x54, ideconf); 897 } 898 899 pci_write_config_byte(dev, 0x48, udma_enable); 900 901 spin_unlock_irqrestore(&piix_lock, flags); 902 } else { 903 /* MWDMA is driven by the PIO timings. */ 904 unsigned int mwdma = speed - XFER_MW_DMA_0; 905 const unsigned int needed_pio[3] = { 906 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 907 }; 908 int pio = needed_pio[mwdma] - XFER_PIO_0; 909 910 /* XFER_PIO_0 is never used currently */ 911 piix_set_timings(ap, adev, pio); 912 } 913 } 914 915 /** 916 * piix_set_dmamode - Initialize host controller PATA DMA timings 917 * @ap: Port whose timings we are configuring 918 * @adev: um 919 * 920 * Set MW/UDMA mode for device, in host controller PCI config space. 921 * 922 * LOCKING: 923 * None (inherited from caller). 924 */ 925 926 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev) 927 { 928 do_pata_set_dmamode(ap, adev, 0); 929 } 930 931 /** 932 * ich_set_dmamode - Initialize host controller PATA DMA timings 933 * @ap: Port whose timings we are configuring 934 * @adev: um 935 * 936 * Set MW/UDMA mode for device, in host controller PCI config space. 937 * 938 * LOCKING: 939 * None (inherited from caller). 940 */ 941 942 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev) 943 { 944 do_pata_set_dmamode(ap, adev, 1); 945 } 946 947 /* 948 * Serial ATA Index/Data Pair Superset Registers access 949 * 950 * Beginning from ICH8, there's a sane way to access SCRs using index 951 * and data register pair located at BAR5 which means that we have 952 * separate SCRs for master and slave. This is handled using libata 953 * slave_link facility. 954 */ 955 static const int piix_sidx_map[] = { 956 [SCR_STATUS] = 0, 957 [SCR_ERROR] = 2, 958 [SCR_CONTROL] = 1, 959 }; 960 961 static void piix_sidpr_sel(struct ata_link *link, unsigned int reg) 962 { 963 struct ata_port *ap = link->ap; 964 struct piix_host_priv *hpriv = ap->host->private_data; 965 966 iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg], 967 hpriv->sidpr + PIIX_SIDPR_IDX); 968 } 969 970 static int piix_sidpr_scr_read(struct ata_link *link, 971 unsigned int reg, u32 *val) 972 { 973 struct piix_host_priv *hpriv = link->ap->host->private_data; 974 975 if (reg >= ARRAY_SIZE(piix_sidx_map)) 976 return -EINVAL; 977 978 piix_sidpr_sel(link, reg); 979 *val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA); 980 return 0; 981 } 982 983 static int piix_sidpr_scr_write(struct ata_link *link, 984 unsigned int reg, u32 val) 985 { 986 struct piix_host_priv *hpriv = link->ap->host->private_data; 987 988 if (reg >= ARRAY_SIZE(piix_sidx_map)) 989 return -EINVAL; 990 991 piix_sidpr_sel(link, reg); 992 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA); 993 return 0; 994 } 995 996 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, 997 unsigned hints) 998 { 999 return sata_link_scr_lpm(link, policy, false); 1000 } 1001 1002 static bool piix_irq_check(struct ata_port *ap) 1003 { 1004 if (unlikely(!ap->ioaddr.bmdma_addr)) 1005 return false; 1006 1007 return ap->ops->bmdma_status(ap) & ATA_DMA_INTR; 1008 } 1009 1010 #ifdef CONFIG_PM 1011 static int piix_broken_suspend(void) 1012 { 1013 static const struct dmi_system_id sysids[] = { 1014 { 1015 .ident = "TECRA M3", 1016 .matches = { 1017 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1018 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"), 1019 }, 1020 }, 1021 { 1022 .ident = "TECRA M3", 1023 .matches = { 1024 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1025 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"), 1026 }, 1027 }, 1028 { 1029 .ident = "TECRA M4", 1030 .matches = { 1031 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1032 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"), 1033 }, 1034 }, 1035 { 1036 .ident = "TECRA M4", 1037 .matches = { 1038 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1039 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"), 1040 }, 1041 }, 1042 { 1043 .ident = "TECRA M5", 1044 .matches = { 1045 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1046 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"), 1047 }, 1048 }, 1049 { 1050 .ident = "TECRA M6", 1051 .matches = { 1052 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1053 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"), 1054 }, 1055 }, 1056 { 1057 .ident = "TECRA M7", 1058 .matches = { 1059 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1060 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"), 1061 }, 1062 }, 1063 { 1064 .ident = "TECRA A8", 1065 .matches = { 1066 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1067 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"), 1068 }, 1069 }, 1070 { 1071 .ident = "Satellite R20", 1072 .matches = { 1073 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1074 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"), 1075 }, 1076 }, 1077 { 1078 .ident = "Satellite R25", 1079 .matches = { 1080 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1081 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"), 1082 }, 1083 }, 1084 { 1085 .ident = "Satellite U200", 1086 .matches = { 1087 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1088 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"), 1089 }, 1090 }, 1091 { 1092 .ident = "Satellite U200", 1093 .matches = { 1094 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1095 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"), 1096 }, 1097 }, 1098 { 1099 .ident = "Satellite Pro U200", 1100 .matches = { 1101 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1102 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"), 1103 }, 1104 }, 1105 { 1106 .ident = "Satellite U205", 1107 .matches = { 1108 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1109 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"), 1110 }, 1111 }, 1112 { 1113 .ident = "SATELLITE U205", 1114 .matches = { 1115 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1116 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"), 1117 }, 1118 }, 1119 { 1120 .ident = "Satellite Pro A120", 1121 .matches = { 1122 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1123 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"), 1124 }, 1125 }, 1126 { 1127 .ident = "Portege M500", 1128 .matches = { 1129 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 1130 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"), 1131 }, 1132 }, 1133 { 1134 .ident = "VGN-BX297XP", 1135 .matches = { 1136 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 1137 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"), 1138 }, 1139 }, 1140 1141 { } /* terminate list */ 1142 }; 1143 static const char *oemstrs[] = { 1144 "Tecra M3,", 1145 }; 1146 int i; 1147 1148 if (dmi_check_system(sysids)) 1149 return 1; 1150 1151 for (i = 0; i < ARRAY_SIZE(oemstrs); i++) 1152 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL)) 1153 return 1; 1154 1155 /* TECRA M4 sometimes forgets its identify and reports bogus 1156 * DMI information. As the bogus information is a bit 1157 * generic, match as many entries as possible. This manual 1158 * matching is necessary because dmi_system_id.matches is 1159 * limited to four entries. 1160 */ 1161 if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") && 1162 dmi_match(DMI_PRODUCT_NAME, "000000") && 1163 dmi_match(DMI_PRODUCT_VERSION, "000000") && 1164 dmi_match(DMI_PRODUCT_SERIAL, "000000") && 1165 dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") && 1166 dmi_match(DMI_BOARD_NAME, "Portable PC") && 1167 dmi_match(DMI_BOARD_VERSION, "Version A0")) 1168 return 1; 1169 1170 return 0; 1171 } 1172 1173 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg) 1174 { 1175 struct ata_host *host = dev_get_drvdata(&pdev->dev); 1176 unsigned long flags; 1177 int rc = 0; 1178 1179 rc = ata_host_suspend(host, mesg); 1180 if (rc) 1181 return rc; 1182 1183 /* Some braindamaged ACPI suspend implementations expect the 1184 * controller to be awake on entry; otherwise, it burns cpu 1185 * cycles and power trying to do something to the sleeping 1186 * beauty. 1187 */ 1188 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) { 1189 pci_save_state(pdev); 1190 1191 /* mark its power state as "unknown", since we don't 1192 * know if e.g. the BIOS will change its device state 1193 * when we suspend. 1194 */ 1195 if (pdev->current_state == PCI_D0) 1196 pdev->current_state = PCI_UNKNOWN; 1197 1198 /* tell resume that it's waking up from broken suspend */ 1199 spin_lock_irqsave(&host->lock, flags); 1200 host->flags |= PIIX_HOST_BROKEN_SUSPEND; 1201 spin_unlock_irqrestore(&host->lock, flags); 1202 } else 1203 ata_pci_device_do_suspend(pdev, mesg); 1204 1205 return 0; 1206 } 1207 1208 static int piix_pci_device_resume(struct pci_dev *pdev) 1209 { 1210 struct ata_host *host = dev_get_drvdata(&pdev->dev); 1211 unsigned long flags; 1212 int rc; 1213 1214 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) { 1215 spin_lock_irqsave(&host->lock, flags); 1216 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND; 1217 spin_unlock_irqrestore(&host->lock, flags); 1218 1219 pci_set_power_state(pdev, PCI_D0); 1220 pci_restore_state(pdev); 1221 1222 /* PCI device wasn't disabled during suspend. Use 1223 * pci_reenable_device() to avoid affecting the enable 1224 * count. 1225 */ 1226 rc = pci_reenable_device(pdev); 1227 if (rc) 1228 dev_err(&pdev->dev, 1229 "failed to enable device after resume (%d)\n", 1230 rc); 1231 } else 1232 rc = ata_pci_device_do_resume(pdev); 1233 1234 if (rc == 0) 1235 ata_host_resume(host); 1236 1237 return rc; 1238 } 1239 #endif 1240 1241 static u8 piix_vmw_bmdma_status(struct ata_port *ap) 1242 { 1243 return ata_bmdma_status(ap) & ~ATA_DMA_ERR; 1244 } 1245 1246 #define AHCI_PCI_BAR 5 1247 #define AHCI_GLOBAL_CTL 0x04 1248 #define AHCI_ENABLE (1 << 31) 1249 static int piix_disable_ahci(struct pci_dev *pdev) 1250 { 1251 void __iomem *mmio; 1252 u32 tmp; 1253 int rc = 0; 1254 1255 /* BUG: pci_enable_device has not yet been called. This 1256 * works because this device is usually set up by BIOS. 1257 */ 1258 1259 if (!pci_resource_start(pdev, AHCI_PCI_BAR) || 1260 !pci_resource_len(pdev, AHCI_PCI_BAR)) 1261 return 0; 1262 1263 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64); 1264 if (!mmio) 1265 return -ENOMEM; 1266 1267 tmp = ioread32(mmio + AHCI_GLOBAL_CTL); 1268 if (tmp & AHCI_ENABLE) { 1269 tmp &= ~AHCI_ENABLE; 1270 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL); 1271 1272 tmp = ioread32(mmio + AHCI_GLOBAL_CTL); 1273 if (tmp & AHCI_ENABLE) 1274 rc = -EIO; 1275 } 1276 1277 pci_iounmap(pdev, mmio); 1278 return rc; 1279 } 1280 1281 /** 1282 * piix_check_450nx_errata - Check for problem 450NX setup 1283 * @ata_dev: the PCI device to check 1284 * 1285 * Check for the present of 450NX errata #19 and errata #25. If 1286 * they are found return an error code so we can turn off DMA 1287 */ 1288 1289 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev) 1290 { 1291 struct pci_dev *pdev = NULL; 1292 u16 cfg; 1293 int no_piix_dma = 0; 1294 1295 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) { 1296 /* Look for 450NX PXB. Check for problem configurations 1297 A PCI quirk checks bit 6 already */ 1298 pci_read_config_word(pdev, 0x41, &cfg); 1299 /* Only on the original revision: IDE DMA can hang */ 1300 if (pdev->revision == 0x00) 1301 no_piix_dma = 1; 1302 /* On all revisions below 5 PXB bus lock must be disabled for IDE */ 1303 else if (cfg & (1<<14) && pdev->revision < 5) 1304 no_piix_dma = 2; 1305 } 1306 if (no_piix_dma) 1307 dev_warn(&ata_dev->dev, 1308 "450NX errata present, disabling IDE DMA%s\n", 1309 no_piix_dma == 2 ? " - a BIOS update may resolve this" 1310 : ""); 1311 1312 return no_piix_dma; 1313 } 1314 1315 static void __devinit piix_init_pcs(struct ata_host *host, 1316 const struct piix_map_db *map_db) 1317 { 1318 struct pci_dev *pdev = to_pci_dev(host->dev); 1319 u16 pcs, new_pcs; 1320 1321 pci_read_config_word(pdev, ICH5_PCS, &pcs); 1322 1323 new_pcs = pcs | map_db->port_enable; 1324 1325 if (new_pcs != pcs) { 1326 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs); 1327 pci_write_config_word(pdev, ICH5_PCS, new_pcs); 1328 msleep(150); 1329 } 1330 } 1331 1332 static const int *__devinit piix_init_sata_map(struct pci_dev *pdev, 1333 struct ata_port_info *pinfo, 1334 const struct piix_map_db *map_db) 1335 { 1336 const int *map; 1337 int i, invalid_map = 0; 1338 u8 map_value; 1339 1340 pci_read_config_byte(pdev, ICH5_PMR, &map_value); 1341 1342 map = map_db->map[map_value & map_db->mask]; 1343 1344 dev_info(&pdev->dev, "MAP ["); 1345 for (i = 0; i < 4; i++) { 1346 switch (map[i]) { 1347 case RV: 1348 invalid_map = 1; 1349 pr_cont(" XX"); 1350 break; 1351 1352 case NA: 1353 pr_cont(" --"); 1354 break; 1355 1356 case IDE: 1357 WARN_ON((i & 1) || map[i + 1] != IDE); 1358 pinfo[i / 2] = piix_port_info[ich_pata_100]; 1359 i++; 1360 pr_cont(" IDE IDE"); 1361 break; 1362 1363 default: 1364 pr_cont(" P%d", map[i]); 1365 if (i & 1) 1366 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS; 1367 break; 1368 } 1369 } 1370 pr_cont(" ]\n"); 1371 1372 if (invalid_map) 1373 dev_err(&pdev->dev, "invalid MAP value %u\n", map_value); 1374 1375 return map; 1376 } 1377 1378 static bool piix_no_sidpr(struct ata_host *host) 1379 { 1380 struct pci_dev *pdev = to_pci_dev(host->dev); 1381 1382 /* 1383 * Samsung DB-P70 only has three ATA ports exposed and 1384 * curiously the unconnected first port reports link online 1385 * while not responding to SRST protocol causing excessive 1386 * detection delay. 1387 * 1388 * Unfortunately, the system doesn't carry enough DMI 1389 * information to identify the machine but does have subsystem 1390 * vendor and device set. As it's unclear whether the 1391 * subsystem vendor/device is used only for this specific 1392 * board, the port can't be disabled solely with the 1393 * information; however, turning off SIDPR access works around 1394 * the problem. Turn it off. 1395 * 1396 * This problem is reported in bnc#441240. 1397 * 1398 * https://bugzilla.novell.com/show_bug.cgi?id=441420 1399 */ 1400 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 && 1401 pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG && 1402 pdev->subsystem_device == 0xb049) { 1403 dev_warn(host->dev, 1404 "Samsung DB-P70 detected, disabling SIDPR\n"); 1405 return true; 1406 } 1407 1408 return false; 1409 } 1410 1411 static int __devinit piix_init_sidpr(struct ata_host *host) 1412 { 1413 struct pci_dev *pdev = to_pci_dev(host->dev); 1414 struct piix_host_priv *hpriv = host->private_data; 1415 struct ata_link *link0 = &host->ports[0]->link; 1416 u32 scontrol; 1417 int i, rc; 1418 1419 /* check for availability */ 1420 for (i = 0; i < 4; i++) 1421 if (hpriv->map[i] == IDE) 1422 return 0; 1423 1424 /* is it blacklisted? */ 1425 if (piix_no_sidpr(host)) 1426 return 0; 1427 1428 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR)) 1429 return 0; 1430 1431 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 || 1432 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN) 1433 return 0; 1434 1435 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME)) 1436 return 0; 1437 1438 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR]; 1439 1440 /* SCR access via SIDPR doesn't work on some configurations. 1441 * Give it a test drive by inhibiting power save modes which 1442 * we'll do anyway. 1443 */ 1444 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol); 1445 1446 /* if IPM is already 3, SCR access is probably working. Don't 1447 * un-inhibit power save modes as BIOS might have inhibited 1448 * them for a reason. 1449 */ 1450 if ((scontrol & 0xf00) != 0x300) { 1451 scontrol |= 0x300; 1452 piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol); 1453 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol); 1454 1455 if ((scontrol & 0xf00) != 0x300) { 1456 dev_info(host->dev, 1457 "SCR access via SIDPR is available but doesn't work\n"); 1458 return 0; 1459 } 1460 } 1461 1462 /* okay, SCRs available, set ops and ask libata for slave_link */ 1463 for (i = 0; i < 2; i++) { 1464 struct ata_port *ap = host->ports[i]; 1465 1466 ap->ops = &piix_sidpr_sata_ops; 1467 1468 if (ap->flags & ATA_FLAG_SLAVE_POSS) { 1469 rc = ata_slave_link_init(ap); 1470 if (rc) 1471 return rc; 1472 } 1473 } 1474 1475 return 0; 1476 } 1477 1478 static void piix_iocfg_bit18_quirk(struct ata_host *host) 1479 { 1480 static const struct dmi_system_id sysids[] = { 1481 { 1482 /* Clevo M570U sets IOCFG bit 18 if the cdrom 1483 * isn't used to boot the system which 1484 * disables the channel. 1485 */ 1486 .ident = "M570U", 1487 .matches = { 1488 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."), 1489 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"), 1490 }, 1491 }, 1492 1493 { } /* terminate list */ 1494 }; 1495 struct pci_dev *pdev = to_pci_dev(host->dev); 1496 struct piix_host_priv *hpriv = host->private_data; 1497 1498 if (!dmi_check_system(sysids)) 1499 return; 1500 1501 /* The datasheet says that bit 18 is NOOP but certain systems 1502 * seem to use it to disable a channel. Clear the bit on the 1503 * affected systems. 1504 */ 1505 if (hpriv->saved_iocfg & (1 << 18)) { 1506 dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n"); 1507 pci_write_config_dword(pdev, PIIX_IOCFG, 1508 hpriv->saved_iocfg & ~(1 << 18)); 1509 } 1510 } 1511 1512 static bool piix_broken_system_poweroff(struct pci_dev *pdev) 1513 { 1514 static const struct dmi_system_id broken_systems[] = { 1515 { 1516 .ident = "HP Compaq 2510p", 1517 .matches = { 1518 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1519 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"), 1520 }, 1521 /* PCI slot number of the controller */ 1522 .driver_data = (void *)0x1FUL, 1523 }, 1524 { 1525 .ident = "HP Compaq nc6000", 1526 .matches = { 1527 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1528 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6000"), 1529 }, 1530 /* PCI slot number of the controller */ 1531 .driver_data = (void *)0x1FUL, 1532 }, 1533 1534 { } /* terminate list */ 1535 }; 1536 const struct dmi_system_id *dmi = dmi_first_match(broken_systems); 1537 1538 if (dmi) { 1539 unsigned long slot = (unsigned long)dmi->driver_data; 1540 /* apply the quirk only to on-board controllers */ 1541 return slot == PCI_SLOT(pdev->devfn); 1542 } 1543 1544 return false; 1545 } 1546 1547 /** 1548 * piix_init_one - Register PIIX ATA PCI device with kernel services 1549 * @pdev: PCI device to register 1550 * @ent: Entry in piix_pci_tbl matching with @pdev 1551 * 1552 * Called from kernel PCI layer. We probe for combined mode (sigh), 1553 * and then hand over control to libata, for it to do the rest. 1554 * 1555 * LOCKING: 1556 * Inherited from PCI layer (may sleep). 1557 * 1558 * RETURNS: 1559 * Zero on success, or -ERRNO value. 1560 */ 1561 1562 static int __devinit piix_init_one(struct pci_dev *pdev, 1563 const struct pci_device_id *ent) 1564 { 1565 struct device *dev = &pdev->dev; 1566 struct ata_port_info port_info[2]; 1567 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] }; 1568 struct scsi_host_template *sht = &piix_sht; 1569 unsigned long port_flags; 1570 struct ata_host *host; 1571 struct piix_host_priv *hpriv; 1572 int rc; 1573 1574 ata_print_version_once(&pdev->dev, DRV_VERSION); 1575 1576 /* no hotplugging support for later devices (FIXME) */ 1577 if (!in_module_init && ent->driver_data >= ich5_sata) 1578 return -ENODEV; 1579 1580 if (piix_broken_system_poweroff(pdev)) { 1581 piix_port_info[ent->driver_data].flags |= 1582 ATA_FLAG_NO_POWEROFF_SPINDOWN | 1583 ATA_FLAG_NO_HIBERNATE_SPINDOWN; 1584 dev_info(&pdev->dev, "quirky BIOS, skipping spindown " 1585 "on poweroff and hibernation\n"); 1586 } 1587 1588 port_info[0] = piix_port_info[ent->driver_data]; 1589 port_info[1] = piix_port_info[ent->driver_data]; 1590 1591 port_flags = port_info[0].flags; 1592 1593 /* enable device and prepare host */ 1594 rc = pcim_enable_device(pdev); 1595 if (rc) 1596 return rc; 1597 1598 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL); 1599 if (!hpriv) 1600 return -ENOMEM; 1601 1602 /* Save IOCFG, this will be used for cable detection, quirk 1603 * detection and restoration on detach. This is necessary 1604 * because some ACPI implementations mess up cable related 1605 * bits on _STM. Reported on kernel bz#11879. 1606 */ 1607 pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg); 1608 1609 /* ICH6R may be driven by either ata_piix or ahci driver 1610 * regardless of BIOS configuration. Make sure AHCI mode is 1611 * off. 1612 */ 1613 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) { 1614 rc = piix_disable_ahci(pdev); 1615 if (rc) 1616 return rc; 1617 } 1618 1619 /* SATA map init can change port_info, do it before prepping host */ 1620 if (port_flags & ATA_FLAG_SATA) 1621 hpriv->map = piix_init_sata_map(pdev, port_info, 1622 piix_map_db_table[ent->driver_data]); 1623 1624 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host); 1625 if (rc) 1626 return rc; 1627 host->private_data = hpriv; 1628 1629 /* initialize controller */ 1630 if (port_flags & ATA_FLAG_SATA) { 1631 piix_init_pcs(host, piix_map_db_table[ent->driver_data]); 1632 rc = piix_init_sidpr(host); 1633 if (rc) 1634 return rc; 1635 if (host->ports[0]->ops == &piix_sidpr_sata_ops) 1636 sht = &piix_sidpr_sht; 1637 } 1638 1639 /* apply IOCFG bit18 quirk */ 1640 piix_iocfg_bit18_quirk(host); 1641 1642 /* On ICH5, some BIOSen disable the interrupt using the 1643 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3. 1644 * On ICH6, this bit has the same effect, but only when 1645 * MSI is disabled (and it is disabled, as we don't use 1646 * message-signalled interrupts currently). 1647 */ 1648 if (port_flags & PIIX_FLAG_CHECKINTR) 1649 pci_intx(pdev, 1); 1650 1651 if (piix_check_450nx_errata(pdev)) { 1652 /* This writes into the master table but it does not 1653 really matter for this errata as we will apply it to 1654 all the PIIX devices on the board */ 1655 host->ports[0]->mwdma_mask = 0; 1656 host->ports[0]->udma_mask = 0; 1657 host->ports[1]->mwdma_mask = 0; 1658 host->ports[1]->udma_mask = 0; 1659 } 1660 host->flags |= ATA_HOST_PARALLEL_SCAN; 1661 1662 pci_set_master(pdev); 1663 return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht); 1664 } 1665 1666 static void piix_remove_one(struct pci_dev *pdev) 1667 { 1668 struct ata_host *host = dev_get_drvdata(&pdev->dev); 1669 struct piix_host_priv *hpriv = host->private_data; 1670 1671 pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg); 1672 1673 ata_pci_remove_one(pdev); 1674 } 1675 1676 static int __init piix_init(void) 1677 { 1678 int rc; 1679 1680 DPRINTK("pci_register_driver\n"); 1681 rc = pci_register_driver(&piix_pci_driver); 1682 if (rc) 1683 return rc; 1684 1685 in_module_init = 0; 1686 1687 DPRINTK("done\n"); 1688 return 0; 1689 } 1690 1691 static void __exit piix_exit(void) 1692 { 1693 pci_unregister_driver(&piix_pci_driver); 1694 } 1695 1696 module_init(piix_init); 1697 module_exit(piix_exit); 1698