1 /* 2 * ata_piix.c - Intel PATA/SATA controllers 3 * 4 * Maintained by: Tejun Heo <tj@kernel.org> 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, /* address map 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 ich8_2port_sata_snb, 154 ich8_2port_sata_byt, 155 }; 156 157 struct piix_map_db { 158 const u32 mask; 159 const u16 port_enable; 160 const int map[][4]; 161 }; 162 163 struct piix_host_priv { 164 const int *map; 165 u32 saved_iocfg; 166 void __iomem *sidpr; 167 }; 168 169 static unsigned int in_module_init = 1; 170 171 static const struct pci_device_id piix_pci_tbl[] = { 172 /* Intel PIIX3 for the 430HX etc */ 173 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma }, 174 /* VMware ICH4 */ 175 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw }, 176 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */ 177 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */ 178 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 179 /* Intel PIIX4 */ 180 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 181 /* Intel PIIX4 */ 182 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 183 /* Intel PIIX */ 184 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, 185 /* Intel ICH (i810, i815, i840) UDMA 66*/ 186 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 }, 187 /* Intel ICH0 : UDMA 33*/ 188 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 }, 189 /* Intel ICH2M */ 190 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 191 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */ 192 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 193 /* Intel ICH3M */ 194 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 195 /* Intel ICH3 (E7500/1) UDMA 100 */ 196 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 197 /* Intel ICH4-L */ 198 { 0x8086, 0x24C1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 199 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */ 200 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 201 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 202 /* Intel ICH5 */ 203 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 204 /* C-ICH (i810E2) */ 205 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 206 /* ESB (855GME/875P + 6300ESB) UDMA 100 */ 207 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 208 /* ICH6 (and 6) (i915) UDMA 100 */ 209 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 210 /* ICH7/7-R (i945, i975) UDMA 100*/ 211 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 }, 212 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 }, 213 /* ICH8 Mobile PATA Controller */ 214 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, 215 216 /* SATA ports */ 217 218 /* 82801EB (ICH5) */ 219 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 220 /* 82801EB (ICH5) */ 221 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 222 /* 6300ESB (ICH5 variant with broken PCS present bits) */ 223 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 224 /* 6300ESB pretending RAID */ 225 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, 226 /* 82801FB/FW (ICH6/ICH6W) */ 227 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 228 /* 82801FR/FRW (ICH6R/ICH6RW) */ 229 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 230 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented). 231 * Attach iff the controller is in IDE mode. */ 232 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 233 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata }, 234 /* 82801GB/GR/GH (ICH7, identical to ICH6) */ 235 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 236 /* 82801GBM/GHM (ICH7M, identical to ICH6M) */ 237 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata }, 238 /* Enterprise Southbridge 2 (631xESB/632xESB) */ 239 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, 240 /* SATA Controller 1 IDE (ICH8) */ 241 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 242 /* SATA Controller 2 IDE (ICH8) */ 243 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 244 /* Mobile SATA Controller IDE (ICH8M), Apple */ 245 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata }, 246 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata }, 247 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata }, 248 /* Mobile SATA Controller IDE (ICH8M) */ 249 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 250 /* SATA Controller IDE (ICH9) */ 251 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 252 /* SATA Controller IDE (ICH9) */ 253 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 254 /* SATA Controller IDE (ICH9) */ 255 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 256 /* SATA Controller IDE (ICH9M) */ 257 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 258 /* SATA Controller IDE (ICH9M) */ 259 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 260 /* SATA Controller IDE (ICH9M) */ 261 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 262 /* SATA Controller IDE (Tolapai) */ 263 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata }, 264 /* SATA Controller IDE (ICH10) */ 265 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 266 /* SATA Controller IDE (ICH10) */ 267 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 268 /* SATA Controller IDE (ICH10) */ 269 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 270 /* SATA Controller IDE (ICH10) */ 271 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 272 /* SATA Controller IDE (PCH) */ 273 { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 274 /* SATA Controller IDE (PCH) */ 275 { 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 276 /* SATA Controller IDE (PCH) */ 277 { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 278 /* SATA Controller IDE (PCH) */ 279 { 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 280 /* SATA Controller IDE (PCH) */ 281 { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 282 /* SATA Controller IDE (PCH) */ 283 { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata }, 284 /* SATA Controller IDE (CPT) */ 285 { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 286 /* SATA Controller IDE (CPT) */ 287 { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 288 /* SATA Controller IDE (CPT) */ 289 { 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 290 /* SATA Controller IDE (CPT) */ 291 { 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 292 /* SATA Controller IDE (PBG) */ 293 { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 294 /* SATA Controller IDE (PBG) */ 295 { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 296 /* SATA Controller IDE (Panther Point) */ 297 { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 298 /* SATA Controller IDE (Panther Point) */ 299 { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 300 /* SATA Controller IDE (Panther Point) */ 301 { 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 302 /* SATA Controller IDE (Panther Point) */ 303 { 0x8086, 0x1e09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 304 /* SATA Controller IDE (Lynx Point) */ 305 { 0x8086, 0x8c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 306 /* SATA Controller IDE (Lynx Point) */ 307 { 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 308 /* SATA Controller IDE (Lynx Point) */ 309 { 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb }, 310 /* SATA Controller IDE (Lynx Point) */ 311 { 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 312 /* SATA Controller IDE (Lynx Point-LP) */ 313 { 0x8086, 0x9c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 314 /* SATA Controller IDE (Lynx Point-LP) */ 315 { 0x8086, 0x9c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 316 /* SATA Controller IDE (Lynx Point-LP) */ 317 { 0x8086, 0x9c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 318 /* SATA Controller IDE (Lynx Point-LP) */ 319 { 0x8086, 0x9c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 320 /* SATA Controller IDE (DH89xxCC) */ 321 { 0x8086, 0x2326, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 322 /* SATA Controller IDE (Avoton) */ 323 { 0x8086, 0x1f20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 324 /* SATA Controller IDE (Avoton) */ 325 { 0x8086, 0x1f21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 326 /* SATA Controller IDE (Avoton) */ 327 { 0x8086, 0x1f30, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 328 /* SATA Controller IDE (Avoton) */ 329 { 0x8086, 0x1f31, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 330 /* SATA Controller IDE (Wellsburg) */ 331 { 0x8086, 0x8d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 332 /* SATA Controller IDE (Wellsburg) */ 333 { 0x8086, 0x8d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb }, 334 /* SATA Controller IDE (Wellsburg) */ 335 { 0x8086, 0x8d60, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, 336 /* SATA Controller IDE (Wellsburg) */ 337 { 0x8086, 0x8d68, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 338 /* SATA Controller IDE (BayTrail) */ 339 { 0x8086, 0x0F20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt }, 340 { 0x8086, 0x0F21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt }, 341 /* SATA Controller IDE (Coleto Creek) */ 342 { 0x8086, 0x23a6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, 343 344 { } /* terminate list */ 345 }; 346 347 static const struct piix_map_db ich5_map_db = { 348 .mask = 0x7, 349 .port_enable = 0x3, 350 .map = { 351 /* PM PS SM SS MAP */ 352 { P0, NA, P1, NA }, /* 000b */ 353 { P1, NA, P0, NA }, /* 001b */ 354 { RV, RV, RV, RV }, 355 { RV, RV, RV, RV }, 356 { P0, P1, IDE, IDE }, /* 100b */ 357 { P1, P0, IDE, IDE }, /* 101b */ 358 { IDE, IDE, P0, P1 }, /* 110b */ 359 { IDE, IDE, P1, P0 }, /* 111b */ 360 }, 361 }; 362 363 static const struct piix_map_db ich6_map_db = { 364 .mask = 0x3, 365 .port_enable = 0xf, 366 .map = { 367 /* PM PS SM SS MAP */ 368 { P0, P2, P1, P3 }, /* 00b */ 369 { IDE, IDE, P1, P3 }, /* 01b */ 370 { P0, P2, IDE, IDE }, /* 10b */ 371 { RV, RV, RV, RV }, 372 }, 373 }; 374 375 static const struct piix_map_db ich6m_map_db = { 376 .mask = 0x3, 377 .port_enable = 0x5, 378 379 /* Map 01b isn't specified in the doc but some notebooks use 380 * it anyway. MAP 01b have been spotted on both ICH6M and 381 * ICH7M. 382 */ 383 .map = { 384 /* PM PS SM SS MAP */ 385 { P0, P2, NA, NA }, /* 00b */ 386 { IDE, IDE, P1, P3 }, /* 01b */ 387 { P0, P2, IDE, IDE }, /* 10b */ 388 { RV, RV, RV, RV }, 389 }, 390 }; 391 392 static const struct piix_map_db ich8_map_db = { 393 .mask = 0x3, 394 .port_enable = 0xf, 395 .map = { 396 /* PM PS SM SS MAP */ 397 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */ 398 { RV, RV, RV, RV }, 399 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */ 400 { RV, RV, RV, RV }, 401 }, 402 }; 403 404 static const struct piix_map_db ich8_2port_map_db = { 405 .mask = 0x3, 406 .port_enable = 0x3, 407 .map = { 408 /* PM PS SM SS MAP */ 409 { P0, NA, P1, NA }, /* 00b */ 410 { RV, RV, RV, RV }, /* 01b */ 411 { RV, RV, RV, RV }, /* 10b */ 412 { RV, RV, RV, RV }, 413 }, 414 }; 415 416 static const struct piix_map_db ich8m_apple_map_db = { 417 .mask = 0x3, 418 .port_enable = 0x1, 419 .map = { 420 /* PM PS SM SS MAP */ 421 { P0, NA, NA, NA }, /* 00b */ 422 { RV, RV, RV, RV }, 423 { P0, P2, IDE, IDE }, /* 10b */ 424 { RV, RV, RV, RV }, 425 }, 426 }; 427 428 static const struct piix_map_db tolapai_map_db = { 429 .mask = 0x3, 430 .port_enable = 0x3, 431 .map = { 432 /* PM PS SM SS MAP */ 433 { P0, NA, P1, NA }, /* 00b */ 434 { RV, RV, RV, RV }, /* 01b */ 435 { RV, RV, RV, RV }, /* 10b */ 436 { RV, RV, RV, RV }, 437 }, 438 }; 439 440 static const struct piix_map_db *piix_map_db_table[] = { 441 [ich5_sata] = &ich5_map_db, 442 [ich6_sata] = &ich6_map_db, 443 [ich6m_sata] = &ich6m_map_db, 444 [ich8_sata] = &ich8_map_db, 445 [ich8_2port_sata] = &ich8_2port_map_db, 446 [ich8m_apple_sata] = &ich8m_apple_map_db, 447 [tolapai_sata] = &tolapai_map_db, 448 [ich8_sata_snb] = &ich8_map_db, 449 [ich8_2port_sata_snb] = &ich8_2port_map_db, 450 [ich8_2port_sata_byt] = &ich8_2port_map_db, 451 }; 452 453 static struct pci_bits piix_enable_bits[] = { 454 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */ 455 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */ 456 }; 457 458 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik"); 459 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers"); 460 MODULE_LICENSE("GPL"); 461 MODULE_DEVICE_TABLE(pci, piix_pci_tbl); 462 MODULE_VERSION(DRV_VERSION); 463 464 struct ich_laptop { 465 u16 device; 466 u16 subvendor; 467 u16 subdevice; 468 }; 469 470 /* 471 * List of laptops that use short cables rather than 80 wire 472 */ 473 474 static const struct ich_laptop ich_laptop[] = { 475 /* devid, subvendor, subdev */ 476 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */ 477 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */ 478 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */ 479 { 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */ 480 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */ 481 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */ 482 { 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */ 483 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */ 484 { 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */ 485 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */ 486 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */ 487 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */ 488 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */ 489 { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */ 490 /* end marker */ 491 { 0, } 492 }; 493 494 static int piix_port_start(struct ata_port *ap) 495 { 496 if (!(ap->flags & PIIX_FLAG_PIO16)) 497 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE; 498 499 return ata_bmdma_port_start(ap); 500 } 501 502 /** 503 * ich_pata_cable_detect - Probe host controller cable detect info 504 * @ap: Port for which cable detect info is desired 505 * 506 * Read 80c cable indicator from ATA PCI device's PCI config 507 * register. This register is normally set by firmware (BIOS). 508 * 509 * LOCKING: 510 * None (inherited from caller). 511 */ 512 513 static int ich_pata_cable_detect(struct ata_port *ap) 514 { 515 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 516 struct piix_host_priv *hpriv = ap->host->private_data; 517 const struct ich_laptop *lap = &ich_laptop[0]; 518 u8 mask; 519 520 /* Check for specials */ 521 while (lap->device) { 522 if (lap->device == pdev->device && 523 lap->subvendor == pdev->subsystem_vendor && 524 lap->subdevice == pdev->subsystem_device) 525 return ATA_CBL_PATA40_SHORT; 526 527 lap++; 528 } 529 530 /* check BIOS cable detect results */ 531 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC; 532 if ((hpriv->saved_iocfg & mask) == 0) 533 return ATA_CBL_PATA40; 534 return ATA_CBL_PATA80; 535 } 536 537 /** 538 * piix_pata_prereset - prereset for PATA host controller 539 * @link: Target link 540 * @deadline: deadline jiffies for the operation 541 * 542 * LOCKING: 543 * None (inherited from caller). 544 */ 545 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline) 546 { 547 struct ata_port *ap = link->ap; 548 struct pci_dev *pdev = to_pci_dev(ap->host->dev); 549 550 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no])) 551 return -ENOENT; 552 return ata_sff_prereset(link, deadline); 553 } 554 555 static DEFINE_SPINLOCK(piix_lock); 556 557 static void piix_set_timings(struct ata_port *ap, struct ata_device *adev, 558 u8 pio) 559 { 560 struct pci_dev *dev = to_pci_dev(ap->host->dev); 561 unsigned long flags; 562 unsigned int is_slave = (adev->devno != 0); 563 unsigned int master_port= ap->port_no ? 0x42 : 0x40; 564 unsigned int slave_port = 0x44; 565 u16 master_data; 566 u8 slave_data; 567 u8 udma_enable; 568 int control = 0; 569 570 /* 571 * See Intel Document 298600-004 for the timing programing rules 572 * for ICH controllers. 573 */ 574 575 static const /* ISP RTC */ 576 u8 timings[][2] = { { 0, 0 }, 577 { 0, 0 }, 578 { 1, 0 }, 579 { 2, 1 }, 580 { 2, 3 }, }; 581 582 if (pio >= 2) 583 control |= 1; /* TIME1 enable */ 584 if (ata_pio_need_iordy(adev)) 585 control |= 2; /* IE enable */ 586 /* Intel specifies that the PPE functionality is for disk only */ 587 if (adev->class == ATA_DEV_ATA) 588 control |= 4; /* PPE enable */ 589 /* 590 * If the drive MWDMA is faster than it can do PIO then 591 * we must force PIO into PIO0 592 */ 593 if (adev->pio_mode < XFER_PIO_0 + pio) 594 /* Enable DMA timing only */ 595 control |= 8; /* PIO cycles in PIO0 */ 596 597 spin_lock_irqsave(&piix_lock, flags); 598 599 /* PIO configuration clears DTE unconditionally. It will be 600 * programmed in set_dmamode which is guaranteed to be called 601 * after set_piomode if any DMA mode is available. 602 */ 603 pci_read_config_word(dev, master_port, &master_data); 604 if (is_slave) { 605 /* clear TIME1|IE1|PPE1|DTE1 */ 606 master_data &= 0xff0f; 607 /* enable PPE1, IE1 and TIME1 as needed */ 608 master_data |= (control << 4); 609 pci_read_config_byte(dev, slave_port, &slave_data); 610 slave_data &= (ap->port_no ? 0x0f : 0xf0); 611 /* Load the timing nibble for this slave */ 612 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) 613 << (ap->port_no ? 4 : 0); 614 } else { 615 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */ 616 master_data &= 0xccf0; 617 /* Enable PPE, IE and TIME as appropriate */ 618 master_data |= control; 619 /* load ISP and RCT */ 620 master_data |= 621 (timings[pio][0] << 12) | 622 (timings[pio][1] << 8); 623 } 624 625 /* Enable SITRE (separate slave timing register) */ 626 master_data |= 0x4000; 627 pci_write_config_word(dev, master_port, master_data); 628 if (is_slave) 629 pci_write_config_byte(dev, slave_port, slave_data); 630 631 /* Ensure the UDMA bit is off - it will be turned back on if 632 UDMA is selected */ 633 634 if (ap->udma_mask) { 635 pci_read_config_byte(dev, 0x48, &udma_enable); 636 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno)); 637 pci_write_config_byte(dev, 0x48, udma_enable); 638 } 639 640 spin_unlock_irqrestore(&piix_lock, flags); 641 } 642 643 /** 644 * piix_set_piomode - Initialize host controller PATA PIO timings 645 * @ap: Port whose timings we are configuring 646 * @adev: Drive in question 647 * 648 * Set PIO mode for device, in host controller PCI config space. 649 * 650 * LOCKING: 651 * None (inherited from caller). 652 */ 653 654 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev) 655 { 656 piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0); 657 } 658 659 /** 660 * do_pata_set_dmamode - Initialize host controller PATA PIO timings 661 * @ap: Port whose timings we are configuring 662 * @adev: Drive in question 663 * @isich: set if the chip is an ICH device 664 * 665 * Set UDMA mode for device, in host controller PCI config space. 666 * 667 * LOCKING: 668 * None (inherited from caller). 669 */ 670 671 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich) 672 { 673 struct pci_dev *dev = to_pci_dev(ap->host->dev); 674 unsigned long flags; 675 u8 speed = adev->dma_mode; 676 int devid = adev->devno + 2 * ap->port_no; 677 u8 udma_enable = 0; 678 679 if (speed >= XFER_UDMA_0) { 680 unsigned int udma = speed - XFER_UDMA_0; 681 u16 udma_timing; 682 u16 ideconf; 683 int u_clock, u_speed; 684 685 spin_lock_irqsave(&piix_lock, flags); 686 687 pci_read_config_byte(dev, 0x48, &udma_enable); 688 689 /* 690 * UDMA is handled by a combination of clock switching and 691 * selection of dividers 692 * 693 * Handy rule: Odd modes are UDMATIMx 01, even are 02 694 * except UDMA0 which is 00 695 */ 696 u_speed = min(2 - (udma & 1), udma); 697 if (udma == 5) 698 u_clock = 0x1000; /* 100Mhz */ 699 else if (udma > 2) 700 u_clock = 1; /* 66Mhz */ 701 else 702 u_clock = 0; /* 33Mhz */ 703 704 udma_enable |= (1 << devid); 705 706 /* Load the CT/RP selection */ 707 pci_read_config_word(dev, 0x4A, &udma_timing); 708 udma_timing &= ~(3 << (4 * devid)); 709 udma_timing |= u_speed << (4 * devid); 710 pci_write_config_word(dev, 0x4A, udma_timing); 711 712 if (isich) { 713 /* Select a 33/66/100Mhz clock */ 714 pci_read_config_word(dev, 0x54, &ideconf); 715 ideconf &= ~(0x1001 << devid); 716 ideconf |= u_clock << devid; 717 /* For ICH or later we should set bit 10 for better 718 performance (WR_PingPong_En) */ 719 pci_write_config_word(dev, 0x54, ideconf); 720 } 721 722 pci_write_config_byte(dev, 0x48, udma_enable); 723 724 spin_unlock_irqrestore(&piix_lock, flags); 725 } else { 726 /* MWDMA is driven by the PIO timings. */ 727 unsigned int mwdma = speed - XFER_MW_DMA_0; 728 const unsigned int needed_pio[3] = { 729 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 730 }; 731 int pio = needed_pio[mwdma] - XFER_PIO_0; 732 733 /* XFER_PIO_0 is never used currently */ 734 piix_set_timings(ap, adev, pio); 735 } 736 } 737 738 /** 739 * piix_set_dmamode - Initialize host controller PATA DMA timings 740 * @ap: Port whose timings we are configuring 741 * @adev: um 742 * 743 * Set MW/UDMA mode for device, in host controller PCI config space. 744 * 745 * LOCKING: 746 * None (inherited from caller). 747 */ 748 749 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev) 750 { 751 do_pata_set_dmamode(ap, adev, 0); 752 } 753 754 /** 755 * ich_set_dmamode - Initialize host controller PATA DMA timings 756 * @ap: Port whose timings we are configuring 757 * @adev: um 758 * 759 * Set MW/UDMA mode for device, in host controller PCI config space. 760 * 761 * LOCKING: 762 * None (inherited from caller). 763 */ 764 765 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev) 766 { 767 do_pata_set_dmamode(ap, adev, 1); 768 } 769 770 /* 771 * Serial ATA Index/Data Pair Superset Registers access 772 * 773 * Beginning from ICH8, there's a sane way to access SCRs using index 774 * and data register pair located at BAR5 which means that we have 775 * separate SCRs for master and slave. This is handled using libata 776 * slave_link facility. 777 */ 778 static const int piix_sidx_map[] = { 779 [SCR_STATUS] = 0, 780 [SCR_ERROR] = 2, 781 [SCR_CONTROL] = 1, 782 }; 783 784 static void piix_sidpr_sel(struct ata_link *link, unsigned int reg) 785 { 786 struct ata_port *ap = link->ap; 787 struct piix_host_priv *hpriv = ap->host->private_data; 788 789 iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg], 790 hpriv->sidpr + PIIX_SIDPR_IDX); 791 } 792 793 static int piix_sidpr_scr_read(struct ata_link *link, 794 unsigned int reg, u32 *val) 795 { 796 struct piix_host_priv *hpriv = link->ap->host->private_data; 797 798 if (reg >= ARRAY_SIZE(piix_sidx_map)) 799 return -EINVAL; 800 801 piix_sidpr_sel(link, reg); 802 *val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA); 803 return 0; 804 } 805 806 static int piix_sidpr_scr_write(struct ata_link *link, 807 unsigned int reg, u32 val) 808 { 809 struct piix_host_priv *hpriv = link->ap->host->private_data; 810 811 if (reg >= ARRAY_SIZE(piix_sidx_map)) 812 return -EINVAL; 813 814 piix_sidpr_sel(link, reg); 815 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA); 816 return 0; 817 } 818 819 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, 820 unsigned hints) 821 { 822 return sata_link_scr_lpm(link, policy, false); 823 } 824 825 static bool piix_irq_check(struct ata_port *ap) 826 { 827 if (unlikely(!ap->ioaddr.bmdma_addr)) 828 return false; 829 830 return ap->ops->bmdma_status(ap) & ATA_DMA_INTR; 831 } 832 833 #ifdef CONFIG_PM_SLEEP 834 static int piix_broken_suspend(void) 835 { 836 static const struct dmi_system_id sysids[] = { 837 { 838 .ident = "TECRA M3", 839 .matches = { 840 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 841 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"), 842 }, 843 }, 844 { 845 .ident = "TECRA M3", 846 .matches = { 847 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 848 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"), 849 }, 850 }, 851 { 852 .ident = "TECRA M4", 853 .matches = { 854 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 855 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"), 856 }, 857 }, 858 { 859 .ident = "TECRA M4", 860 .matches = { 861 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 862 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"), 863 }, 864 }, 865 { 866 .ident = "TECRA M5", 867 .matches = { 868 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 869 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"), 870 }, 871 }, 872 { 873 .ident = "TECRA M6", 874 .matches = { 875 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 876 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"), 877 }, 878 }, 879 { 880 .ident = "TECRA M7", 881 .matches = { 882 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 883 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"), 884 }, 885 }, 886 { 887 .ident = "TECRA A8", 888 .matches = { 889 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 890 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"), 891 }, 892 }, 893 { 894 .ident = "Satellite R20", 895 .matches = { 896 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 897 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"), 898 }, 899 }, 900 { 901 .ident = "Satellite R25", 902 .matches = { 903 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 904 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"), 905 }, 906 }, 907 { 908 .ident = "Satellite U200", 909 .matches = { 910 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 911 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"), 912 }, 913 }, 914 { 915 .ident = "Satellite U200", 916 .matches = { 917 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 918 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"), 919 }, 920 }, 921 { 922 .ident = "Satellite Pro U200", 923 .matches = { 924 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 925 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"), 926 }, 927 }, 928 { 929 .ident = "Satellite U205", 930 .matches = { 931 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 932 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"), 933 }, 934 }, 935 { 936 .ident = "SATELLITE U205", 937 .matches = { 938 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 939 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"), 940 }, 941 }, 942 { 943 .ident = "Satellite Pro A120", 944 .matches = { 945 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 946 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"), 947 }, 948 }, 949 { 950 .ident = "Portege M500", 951 .matches = { 952 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), 953 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"), 954 }, 955 }, 956 { 957 .ident = "VGN-BX297XP", 958 .matches = { 959 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), 960 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"), 961 }, 962 }, 963 964 { } /* terminate list */ 965 }; 966 static const char *oemstrs[] = { 967 "Tecra M3,", 968 }; 969 int i; 970 971 if (dmi_check_system(sysids)) 972 return 1; 973 974 for (i = 0; i < ARRAY_SIZE(oemstrs); i++) 975 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL)) 976 return 1; 977 978 /* TECRA M4 sometimes forgets its identify and reports bogus 979 * DMI information. As the bogus information is a bit 980 * generic, match as many entries as possible. This manual 981 * matching is necessary because dmi_system_id.matches is 982 * limited to four entries. 983 */ 984 if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") && 985 dmi_match(DMI_PRODUCT_NAME, "000000") && 986 dmi_match(DMI_PRODUCT_VERSION, "000000") && 987 dmi_match(DMI_PRODUCT_SERIAL, "000000") && 988 dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") && 989 dmi_match(DMI_BOARD_NAME, "Portable PC") && 990 dmi_match(DMI_BOARD_VERSION, "Version A0")) 991 return 1; 992 993 return 0; 994 } 995 996 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg) 997 { 998 struct ata_host *host = pci_get_drvdata(pdev); 999 unsigned long flags; 1000 int rc = 0; 1001 1002 rc = ata_host_suspend(host, mesg); 1003 if (rc) 1004 return rc; 1005 1006 /* Some braindamaged ACPI suspend implementations expect the 1007 * controller to be awake on entry; otherwise, it burns cpu 1008 * cycles and power trying to do something to the sleeping 1009 * beauty. 1010 */ 1011 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) { 1012 pci_save_state(pdev); 1013 1014 /* mark its power state as "unknown", since we don't 1015 * know if e.g. the BIOS will change its device state 1016 * when we suspend. 1017 */ 1018 if (pdev->current_state == PCI_D0) 1019 pdev->current_state = PCI_UNKNOWN; 1020 1021 /* tell resume that it's waking up from broken suspend */ 1022 spin_lock_irqsave(&host->lock, flags); 1023 host->flags |= PIIX_HOST_BROKEN_SUSPEND; 1024 spin_unlock_irqrestore(&host->lock, flags); 1025 } else 1026 ata_pci_device_do_suspend(pdev, mesg); 1027 1028 return 0; 1029 } 1030 1031 static int piix_pci_device_resume(struct pci_dev *pdev) 1032 { 1033 struct ata_host *host = pci_get_drvdata(pdev); 1034 unsigned long flags; 1035 int rc; 1036 1037 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) { 1038 spin_lock_irqsave(&host->lock, flags); 1039 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND; 1040 spin_unlock_irqrestore(&host->lock, flags); 1041 1042 pci_set_power_state(pdev, PCI_D0); 1043 pci_restore_state(pdev); 1044 1045 /* PCI device wasn't disabled during suspend. Use 1046 * pci_reenable_device() to avoid affecting the enable 1047 * count. 1048 */ 1049 rc = pci_reenable_device(pdev); 1050 if (rc) 1051 dev_err(&pdev->dev, 1052 "failed to enable device after resume (%d)\n", 1053 rc); 1054 } else 1055 rc = ata_pci_device_do_resume(pdev); 1056 1057 if (rc == 0) 1058 ata_host_resume(host); 1059 1060 return rc; 1061 } 1062 #endif 1063 1064 static u8 piix_vmw_bmdma_status(struct ata_port *ap) 1065 { 1066 return ata_bmdma_status(ap) & ~ATA_DMA_ERR; 1067 } 1068 1069 static struct scsi_host_template piix_sht = { 1070 ATA_BMDMA_SHT(DRV_NAME), 1071 }; 1072 1073 static struct ata_port_operations piix_sata_ops = { 1074 .inherits = &ata_bmdma32_port_ops, 1075 .sff_irq_check = piix_irq_check, 1076 .port_start = piix_port_start, 1077 }; 1078 1079 static struct ata_port_operations piix_pata_ops = { 1080 .inherits = &piix_sata_ops, 1081 .cable_detect = ata_cable_40wire, 1082 .set_piomode = piix_set_piomode, 1083 .set_dmamode = piix_set_dmamode, 1084 .prereset = piix_pata_prereset, 1085 }; 1086 1087 static struct ata_port_operations piix_vmw_ops = { 1088 .inherits = &piix_pata_ops, 1089 .bmdma_status = piix_vmw_bmdma_status, 1090 }; 1091 1092 static struct ata_port_operations ich_pata_ops = { 1093 .inherits = &piix_pata_ops, 1094 .cable_detect = ich_pata_cable_detect, 1095 .set_dmamode = ich_set_dmamode, 1096 }; 1097 1098 static struct device_attribute *piix_sidpr_shost_attrs[] = { 1099 &dev_attr_link_power_management_policy, 1100 NULL 1101 }; 1102 1103 static struct scsi_host_template piix_sidpr_sht = { 1104 ATA_BMDMA_SHT(DRV_NAME), 1105 .shost_attrs = piix_sidpr_shost_attrs, 1106 }; 1107 1108 static struct ata_port_operations piix_sidpr_sata_ops = { 1109 .inherits = &piix_sata_ops, 1110 .hardreset = sata_std_hardreset, 1111 .scr_read = piix_sidpr_scr_read, 1112 .scr_write = piix_sidpr_scr_write, 1113 .set_lpm = piix_sidpr_set_lpm, 1114 }; 1115 1116 static struct ata_port_info piix_port_info[] = { 1117 [piix_pata_mwdma] = /* PIIX3 MWDMA only */ 1118 { 1119 .flags = PIIX_PATA_FLAGS, 1120 .pio_mask = ATA_PIO4, 1121 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ 1122 .port_ops = &piix_pata_ops, 1123 }, 1124 1125 [piix_pata_33] = /* PIIX4 at 33MHz */ 1126 { 1127 .flags = PIIX_PATA_FLAGS, 1128 .pio_mask = ATA_PIO4, 1129 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ 1130 .udma_mask = ATA_UDMA2, 1131 .port_ops = &piix_pata_ops, 1132 }, 1133 1134 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/ 1135 { 1136 .flags = PIIX_PATA_FLAGS, 1137 .pio_mask = ATA_PIO4, 1138 .mwdma_mask = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok */ 1139 .udma_mask = ATA_UDMA2, 1140 .port_ops = &ich_pata_ops, 1141 }, 1142 1143 [ich_pata_66] = /* ICH controllers up to 66MHz */ 1144 { 1145 .flags = PIIX_PATA_FLAGS, 1146 .pio_mask = ATA_PIO4, 1147 .mwdma_mask = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */ 1148 .udma_mask = ATA_UDMA4, 1149 .port_ops = &ich_pata_ops, 1150 }, 1151 1152 [ich_pata_100] = 1153 { 1154 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, 1155 .pio_mask = ATA_PIO4, 1156 .mwdma_mask = ATA_MWDMA12_ONLY, 1157 .udma_mask = ATA_UDMA5, 1158 .port_ops = &ich_pata_ops, 1159 }, 1160 1161 [ich_pata_100_nomwdma1] = 1162 { 1163 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, 1164 .pio_mask = ATA_PIO4, 1165 .mwdma_mask = ATA_MWDMA2_ONLY, 1166 .udma_mask = ATA_UDMA5, 1167 .port_ops = &ich_pata_ops, 1168 }, 1169 1170 [ich5_sata] = 1171 { 1172 .flags = PIIX_SATA_FLAGS, 1173 .pio_mask = ATA_PIO4, 1174 .mwdma_mask = ATA_MWDMA2, 1175 .udma_mask = ATA_UDMA6, 1176 .port_ops = &piix_sata_ops, 1177 }, 1178 1179 [ich6_sata] = 1180 { 1181 .flags = PIIX_SATA_FLAGS, 1182 .pio_mask = ATA_PIO4, 1183 .mwdma_mask = ATA_MWDMA2, 1184 .udma_mask = ATA_UDMA6, 1185 .port_ops = &piix_sata_ops, 1186 }, 1187 1188 [ich6m_sata] = 1189 { 1190 .flags = PIIX_SATA_FLAGS, 1191 .pio_mask = ATA_PIO4, 1192 .mwdma_mask = ATA_MWDMA2, 1193 .udma_mask = ATA_UDMA6, 1194 .port_ops = &piix_sata_ops, 1195 }, 1196 1197 [ich8_sata] = 1198 { 1199 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR, 1200 .pio_mask = ATA_PIO4, 1201 .mwdma_mask = ATA_MWDMA2, 1202 .udma_mask = ATA_UDMA6, 1203 .port_ops = &piix_sata_ops, 1204 }, 1205 1206 [ich8_2port_sata] = 1207 { 1208 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR, 1209 .pio_mask = ATA_PIO4, 1210 .mwdma_mask = ATA_MWDMA2, 1211 .udma_mask = ATA_UDMA6, 1212 .port_ops = &piix_sata_ops, 1213 }, 1214 1215 [tolapai_sata] = 1216 { 1217 .flags = PIIX_SATA_FLAGS, 1218 .pio_mask = ATA_PIO4, 1219 .mwdma_mask = ATA_MWDMA2, 1220 .udma_mask = ATA_UDMA6, 1221 .port_ops = &piix_sata_ops, 1222 }, 1223 1224 [ich8m_apple_sata] = 1225 { 1226 .flags = PIIX_SATA_FLAGS, 1227 .pio_mask = ATA_PIO4, 1228 .mwdma_mask = ATA_MWDMA2, 1229 .udma_mask = ATA_UDMA6, 1230 .port_ops = &piix_sata_ops, 1231 }, 1232 1233 [piix_pata_vmw] = 1234 { 1235 .flags = PIIX_PATA_FLAGS, 1236 .pio_mask = ATA_PIO4, 1237 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ 1238 .udma_mask = ATA_UDMA2, 1239 .port_ops = &piix_vmw_ops, 1240 }, 1241 1242 /* 1243 * some Sandybridge chipsets have broken 32 mode up to now, 1244 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592 1245 */ 1246 [ich8_sata_snb] = 1247 { 1248 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16, 1249 .pio_mask = ATA_PIO4, 1250 .mwdma_mask = ATA_MWDMA2, 1251 .udma_mask = ATA_UDMA6, 1252 .port_ops = &piix_sata_ops, 1253 }, 1254 1255 [ich8_2port_sata_snb] = 1256 { 1257 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR 1258 | PIIX_FLAG_PIO16, 1259 .pio_mask = ATA_PIO4, 1260 .mwdma_mask = ATA_MWDMA2, 1261 .udma_mask = ATA_UDMA6, 1262 .port_ops = &piix_sata_ops, 1263 }, 1264 1265 [ich8_2port_sata_byt] = 1266 { 1267 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16, 1268 .pio_mask = ATA_PIO4, 1269 .mwdma_mask = ATA_MWDMA2, 1270 .udma_mask = ATA_UDMA6, 1271 .port_ops = &piix_sata_ops, 1272 }, 1273 1274 }; 1275 1276 #define AHCI_PCI_BAR 5 1277 #define AHCI_GLOBAL_CTL 0x04 1278 #define AHCI_ENABLE (1 << 31) 1279 static int piix_disable_ahci(struct pci_dev *pdev) 1280 { 1281 void __iomem *mmio; 1282 u32 tmp; 1283 int rc = 0; 1284 1285 /* BUG: pci_enable_device has not yet been called. This 1286 * works because this device is usually set up by BIOS. 1287 */ 1288 1289 if (!pci_resource_start(pdev, AHCI_PCI_BAR) || 1290 !pci_resource_len(pdev, AHCI_PCI_BAR)) 1291 return 0; 1292 1293 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64); 1294 if (!mmio) 1295 return -ENOMEM; 1296 1297 tmp = ioread32(mmio + AHCI_GLOBAL_CTL); 1298 if (tmp & AHCI_ENABLE) { 1299 tmp &= ~AHCI_ENABLE; 1300 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL); 1301 1302 tmp = ioread32(mmio + AHCI_GLOBAL_CTL); 1303 if (tmp & AHCI_ENABLE) 1304 rc = -EIO; 1305 } 1306 1307 pci_iounmap(pdev, mmio); 1308 return rc; 1309 } 1310 1311 /** 1312 * piix_check_450nx_errata - Check for problem 450NX setup 1313 * @ata_dev: the PCI device to check 1314 * 1315 * Check for the present of 450NX errata #19 and errata #25. If 1316 * they are found return an error code so we can turn off DMA 1317 */ 1318 1319 static int piix_check_450nx_errata(struct pci_dev *ata_dev) 1320 { 1321 struct pci_dev *pdev = NULL; 1322 u16 cfg; 1323 int no_piix_dma = 0; 1324 1325 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) { 1326 /* Look for 450NX PXB. Check for problem configurations 1327 A PCI quirk checks bit 6 already */ 1328 pci_read_config_word(pdev, 0x41, &cfg); 1329 /* Only on the original revision: IDE DMA can hang */ 1330 if (pdev->revision == 0x00) 1331 no_piix_dma = 1; 1332 /* On all revisions below 5 PXB bus lock must be disabled for IDE */ 1333 else if (cfg & (1<<14) && pdev->revision < 5) 1334 no_piix_dma = 2; 1335 } 1336 if (no_piix_dma) 1337 dev_warn(&ata_dev->dev, 1338 "450NX errata present, disabling IDE DMA%s\n", 1339 no_piix_dma == 2 ? " - a BIOS update may resolve this" 1340 : ""); 1341 1342 return no_piix_dma; 1343 } 1344 1345 static void piix_init_pcs(struct ata_host *host, 1346 const struct piix_map_db *map_db) 1347 { 1348 struct pci_dev *pdev = to_pci_dev(host->dev); 1349 u16 pcs, new_pcs; 1350 1351 pci_read_config_word(pdev, ICH5_PCS, &pcs); 1352 1353 new_pcs = pcs | map_db->port_enable; 1354 1355 if (new_pcs != pcs) { 1356 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs); 1357 pci_write_config_word(pdev, ICH5_PCS, new_pcs); 1358 msleep(150); 1359 } 1360 } 1361 1362 static const int *piix_init_sata_map(struct pci_dev *pdev, 1363 struct ata_port_info *pinfo, 1364 const struct piix_map_db *map_db) 1365 { 1366 const int *map; 1367 int i, invalid_map = 0; 1368 u8 map_value; 1369 char buf[32]; 1370 char *p = buf, *end = buf + sizeof(buf); 1371 1372 pci_read_config_byte(pdev, ICH5_PMR, &map_value); 1373 1374 map = map_db->map[map_value & map_db->mask]; 1375 1376 for (i = 0; i < 4; i++) { 1377 switch (map[i]) { 1378 case RV: 1379 invalid_map = 1; 1380 p += scnprintf(p, end - p, " XX"); 1381 break; 1382 1383 case NA: 1384 p += scnprintf(p, end - p, " --"); 1385 break; 1386 1387 case IDE: 1388 WARN_ON((i & 1) || map[i + 1] != IDE); 1389 pinfo[i / 2] = piix_port_info[ich_pata_100]; 1390 i++; 1391 p += scnprintf(p, end - p, " IDE IDE"); 1392 break; 1393 1394 default: 1395 p += scnprintf(p, end - p, " P%d", map[i]); 1396 if (i & 1) 1397 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS; 1398 break; 1399 } 1400 } 1401 dev_info(&pdev->dev, "MAP [%s ]\n", buf); 1402 1403 if (invalid_map) 1404 dev_err(&pdev->dev, "invalid MAP value %u\n", map_value); 1405 1406 return map; 1407 } 1408 1409 static bool piix_no_sidpr(struct ata_host *host) 1410 { 1411 struct pci_dev *pdev = to_pci_dev(host->dev); 1412 1413 /* 1414 * Samsung DB-P70 only has three ATA ports exposed and 1415 * curiously the unconnected first port reports link online 1416 * while not responding to SRST protocol causing excessive 1417 * detection delay. 1418 * 1419 * Unfortunately, the system doesn't carry enough DMI 1420 * information to identify the machine but does have subsystem 1421 * vendor and device set. As it's unclear whether the 1422 * subsystem vendor/device is used only for this specific 1423 * board, the port can't be disabled solely with the 1424 * information; however, turning off SIDPR access works around 1425 * the problem. Turn it off. 1426 * 1427 * This problem is reported in bnc#441240. 1428 * 1429 * https://bugzilla.novell.com/show_bug.cgi?id=441420 1430 */ 1431 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 && 1432 pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG && 1433 pdev->subsystem_device == 0xb049) { 1434 dev_warn(host->dev, 1435 "Samsung DB-P70 detected, disabling SIDPR\n"); 1436 return true; 1437 } 1438 1439 return false; 1440 } 1441 1442 static int piix_init_sidpr(struct ata_host *host) 1443 { 1444 struct pci_dev *pdev = to_pci_dev(host->dev); 1445 struct piix_host_priv *hpriv = host->private_data; 1446 struct ata_link *link0 = &host->ports[0]->link; 1447 u32 scontrol; 1448 int i, rc; 1449 1450 /* check for availability */ 1451 for (i = 0; i < 4; i++) 1452 if (hpriv->map[i] == IDE) 1453 return 0; 1454 1455 /* is it blacklisted? */ 1456 if (piix_no_sidpr(host)) 1457 return 0; 1458 1459 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR)) 1460 return 0; 1461 1462 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 || 1463 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN) 1464 return 0; 1465 1466 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME)) 1467 return 0; 1468 1469 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR]; 1470 1471 /* SCR access via SIDPR doesn't work on some configurations. 1472 * Give it a test drive by inhibiting power save modes which 1473 * we'll do anyway. 1474 */ 1475 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol); 1476 1477 /* if IPM is already 3, SCR access is probably working. Don't 1478 * un-inhibit power save modes as BIOS might have inhibited 1479 * them for a reason. 1480 */ 1481 if ((scontrol & 0xf00) != 0x300) { 1482 scontrol |= 0x300; 1483 piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol); 1484 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol); 1485 1486 if ((scontrol & 0xf00) != 0x300) { 1487 dev_info(host->dev, 1488 "SCR access via SIDPR is available but doesn't work\n"); 1489 return 0; 1490 } 1491 } 1492 1493 /* okay, SCRs available, set ops and ask libata for slave_link */ 1494 for (i = 0; i < 2; i++) { 1495 struct ata_port *ap = host->ports[i]; 1496 1497 ap->ops = &piix_sidpr_sata_ops; 1498 1499 if (ap->flags & ATA_FLAG_SLAVE_POSS) { 1500 rc = ata_slave_link_init(ap); 1501 if (rc) 1502 return rc; 1503 } 1504 } 1505 1506 return 0; 1507 } 1508 1509 static void piix_iocfg_bit18_quirk(struct ata_host *host) 1510 { 1511 static const struct dmi_system_id sysids[] = { 1512 { 1513 /* Clevo M570U sets IOCFG bit 18 if the cdrom 1514 * isn't used to boot the system which 1515 * disables the channel. 1516 */ 1517 .ident = "M570U", 1518 .matches = { 1519 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."), 1520 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"), 1521 }, 1522 }, 1523 1524 { } /* terminate list */ 1525 }; 1526 struct pci_dev *pdev = to_pci_dev(host->dev); 1527 struct piix_host_priv *hpriv = host->private_data; 1528 1529 if (!dmi_check_system(sysids)) 1530 return; 1531 1532 /* The datasheet says that bit 18 is NOOP but certain systems 1533 * seem to use it to disable a channel. Clear the bit on the 1534 * affected systems. 1535 */ 1536 if (hpriv->saved_iocfg & (1 << 18)) { 1537 dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n"); 1538 pci_write_config_dword(pdev, PIIX_IOCFG, 1539 hpriv->saved_iocfg & ~(1 << 18)); 1540 } 1541 } 1542 1543 static bool piix_broken_system_poweroff(struct pci_dev *pdev) 1544 { 1545 static const struct dmi_system_id broken_systems[] = { 1546 { 1547 .ident = "HP Compaq 2510p", 1548 .matches = { 1549 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1550 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"), 1551 }, 1552 /* PCI slot number of the controller */ 1553 .driver_data = (void *)0x1FUL, 1554 }, 1555 { 1556 .ident = "HP Compaq nc6000", 1557 .matches = { 1558 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1559 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6000"), 1560 }, 1561 /* PCI slot number of the controller */ 1562 .driver_data = (void *)0x1FUL, 1563 }, 1564 1565 { } /* terminate list */ 1566 }; 1567 const struct dmi_system_id *dmi = dmi_first_match(broken_systems); 1568 1569 if (dmi) { 1570 unsigned long slot = (unsigned long)dmi->driver_data; 1571 /* apply the quirk only to on-board controllers */ 1572 return slot == PCI_SLOT(pdev->devfn); 1573 } 1574 1575 return false; 1576 } 1577 1578 static int prefer_ms_hyperv = 1; 1579 module_param(prefer_ms_hyperv, int, 0); 1580 MODULE_PARM_DESC(prefer_ms_hyperv, 1581 "Prefer Hyper-V paravirtualization drivers instead of ATA, " 1582 "0 - Use ATA drivers, " 1583 "1 (Default) - Use the paravirtualization drivers."); 1584 1585 static void piix_ignore_devices_quirk(struct ata_host *host) 1586 { 1587 #if IS_ENABLED(CONFIG_HYPERV_STORAGE) 1588 static const struct dmi_system_id ignore_hyperv[] = { 1589 { 1590 /* On Hyper-V hypervisors the disks are exposed on 1591 * both the emulated SATA controller and on the 1592 * paravirtualised drivers. The CD/DVD devices 1593 * are only exposed on the emulated controller. 1594 * Request we ignore ATA devices on this host. 1595 */ 1596 .ident = "Hyper-V Virtual Machine", 1597 .matches = { 1598 DMI_MATCH(DMI_SYS_VENDOR, 1599 "Microsoft Corporation"), 1600 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), 1601 }, 1602 }, 1603 { } /* terminate list */ 1604 }; 1605 static const struct dmi_system_id allow_virtual_pc[] = { 1606 { 1607 /* In MS Virtual PC guests the DMI ident is nearly 1608 * identical to a Hyper-V guest. One difference is the 1609 * product version which is used here to identify 1610 * a Virtual PC guest. This entry allows ata_piix to 1611 * drive the emulated hardware. 1612 */ 1613 .ident = "MS Virtual PC 2007", 1614 .matches = { 1615 DMI_MATCH(DMI_SYS_VENDOR, 1616 "Microsoft Corporation"), 1617 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"), 1618 DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"), 1619 }, 1620 }, 1621 { } /* terminate list */ 1622 }; 1623 const struct dmi_system_id *ignore = dmi_first_match(ignore_hyperv); 1624 const struct dmi_system_id *allow = dmi_first_match(allow_virtual_pc); 1625 1626 if (ignore && !allow && prefer_ms_hyperv) { 1627 host->flags |= ATA_HOST_IGNORE_ATA; 1628 dev_info(host->dev, "%s detected, ATA device ignore set\n", 1629 ignore->ident); 1630 } 1631 #endif 1632 } 1633 1634 /** 1635 * piix_init_one - Register PIIX ATA PCI device with kernel services 1636 * @pdev: PCI device to register 1637 * @ent: Entry in piix_pci_tbl matching with @pdev 1638 * 1639 * Called from kernel PCI layer. We probe for combined mode (sigh), 1640 * and then hand over control to libata, for it to do the rest. 1641 * 1642 * LOCKING: 1643 * Inherited from PCI layer (may sleep). 1644 * 1645 * RETURNS: 1646 * Zero on success, or -ERRNO value. 1647 */ 1648 1649 static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) 1650 { 1651 struct device *dev = &pdev->dev; 1652 struct ata_port_info port_info[2]; 1653 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] }; 1654 struct scsi_host_template *sht = &piix_sht; 1655 unsigned long port_flags; 1656 struct ata_host *host; 1657 struct piix_host_priv *hpriv; 1658 int rc; 1659 1660 ata_print_version_once(&pdev->dev, DRV_VERSION); 1661 1662 /* no hotplugging support for later devices (FIXME) */ 1663 if (!in_module_init && ent->driver_data >= ich5_sata) 1664 return -ENODEV; 1665 1666 if (piix_broken_system_poweroff(pdev)) { 1667 piix_port_info[ent->driver_data].flags |= 1668 ATA_FLAG_NO_POWEROFF_SPINDOWN | 1669 ATA_FLAG_NO_HIBERNATE_SPINDOWN; 1670 dev_info(&pdev->dev, "quirky BIOS, skipping spindown " 1671 "on poweroff and hibernation\n"); 1672 } 1673 1674 port_info[0] = piix_port_info[ent->driver_data]; 1675 port_info[1] = piix_port_info[ent->driver_data]; 1676 1677 port_flags = port_info[0].flags; 1678 1679 /* enable device and prepare host */ 1680 rc = pcim_enable_device(pdev); 1681 if (rc) 1682 return rc; 1683 1684 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL); 1685 if (!hpriv) 1686 return -ENOMEM; 1687 1688 /* Save IOCFG, this will be used for cable detection, quirk 1689 * detection and restoration on detach. This is necessary 1690 * because some ACPI implementations mess up cable related 1691 * bits on _STM. Reported on kernel bz#11879. 1692 */ 1693 pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg); 1694 1695 /* ICH6R may be driven by either ata_piix or ahci driver 1696 * regardless of BIOS configuration. Make sure AHCI mode is 1697 * off. 1698 */ 1699 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) { 1700 rc = piix_disable_ahci(pdev); 1701 if (rc) 1702 return rc; 1703 } 1704 1705 /* SATA map init can change port_info, do it before prepping host */ 1706 if (port_flags & ATA_FLAG_SATA) 1707 hpriv->map = piix_init_sata_map(pdev, port_info, 1708 piix_map_db_table[ent->driver_data]); 1709 1710 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host); 1711 if (rc) 1712 return rc; 1713 host->private_data = hpriv; 1714 1715 /* initialize controller */ 1716 if (port_flags & ATA_FLAG_SATA) { 1717 piix_init_pcs(host, piix_map_db_table[ent->driver_data]); 1718 rc = piix_init_sidpr(host); 1719 if (rc) 1720 return rc; 1721 if (host->ports[0]->ops == &piix_sidpr_sata_ops) 1722 sht = &piix_sidpr_sht; 1723 } 1724 1725 /* apply IOCFG bit18 quirk */ 1726 piix_iocfg_bit18_quirk(host); 1727 1728 /* On ICH5, some BIOSen disable the interrupt using the 1729 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3. 1730 * On ICH6, this bit has the same effect, but only when 1731 * MSI is disabled (and it is disabled, as we don't use 1732 * message-signalled interrupts currently). 1733 */ 1734 if (port_flags & PIIX_FLAG_CHECKINTR) 1735 pci_intx(pdev, 1); 1736 1737 if (piix_check_450nx_errata(pdev)) { 1738 /* This writes into the master table but it does not 1739 really matter for this errata as we will apply it to 1740 all the PIIX devices on the board */ 1741 host->ports[0]->mwdma_mask = 0; 1742 host->ports[0]->udma_mask = 0; 1743 host->ports[1]->mwdma_mask = 0; 1744 host->ports[1]->udma_mask = 0; 1745 } 1746 host->flags |= ATA_HOST_PARALLEL_SCAN; 1747 1748 /* Allow hosts to specify device types to ignore when scanning. */ 1749 piix_ignore_devices_quirk(host); 1750 1751 pci_set_master(pdev); 1752 return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht); 1753 } 1754 1755 static void piix_remove_one(struct pci_dev *pdev) 1756 { 1757 struct ata_host *host = pci_get_drvdata(pdev); 1758 struct piix_host_priv *hpriv = host->private_data; 1759 1760 pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg); 1761 1762 ata_pci_remove_one(pdev); 1763 } 1764 1765 static struct pci_driver piix_pci_driver = { 1766 .name = DRV_NAME, 1767 .id_table = piix_pci_tbl, 1768 .probe = piix_init_one, 1769 .remove = piix_remove_one, 1770 #ifdef CONFIG_PM_SLEEP 1771 .suspend = piix_pci_device_suspend, 1772 .resume = piix_pci_device_resume, 1773 #endif 1774 }; 1775 1776 static int __init piix_init(void) 1777 { 1778 int rc; 1779 1780 DPRINTK("pci_register_driver\n"); 1781 rc = pci_register_driver(&piix_pci_driver); 1782 if (rc) 1783 return rc; 1784 1785 in_module_init = 0; 1786 1787 DPRINTK("done\n"); 1788 return 0; 1789 } 1790 1791 static void __exit piix_exit(void) 1792 { 1793 pci_unregister_driver(&piix_pci_driver); 1794 } 1795 1796 module_init(piix_init); 1797 module_exit(piix_exit); 1798