2 * ata_piix.c - Intel PATA/SATA controllers
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
9 * Copyright 2003-2005 Red Hat Inc
10 * Copyright 2003-2005 Jeff Garzik
13 * Copyright header from piix.c:
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 <alan@redhat.com>
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)
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.
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.
35 * libata documentation is available via 'make {ps|pdf}docs',
36 * as Documentation/DocBook/libata.*
38 * Hardware documentation available at http://developer.intel.com/
41 * Publically available from Intel web site. Errata documentation
42 * is also publically 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.
46 * The chipsets all follow very much the same design. The orginal Triton
47 * series chipsets do _not_ support independant 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 independant timing (that is those
51 * with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix
52 * for the early chip drivers.
57 * PIIX4 errata #9 - Only on ultra obscure hw
58 * ICH3 errata #13 - Not observed to affect real hw
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
76 * Should have been BIOS fixed:
77 * 450NX: errata #19 - DMA hangs on old 450NX
78 * 450NX: errata #20 - DMA hangs on old 450NX
79 * 450NX: errata #25 - Corruption with DMA on old 450NX
80 * ICH3 errata #15 - IDE deadlock under high load
81 * (BIOS must set dev 31 fn 0 bit 23)
82 * ICH3 errata #18 - Don't use native mode
85 #include <linux/kernel.h>
86 #include <linux/module.h>
87 #include <linux/pci.h>
88 #include <linux/init.h>
89 #include <linux/blkdev.h>
90 #include <linux/delay.h>
91 #include <linux/device.h>
92 #include <scsi/scsi_host.h>
93 #include <linux/libata.h>
94 #include <linux/dmi.h>
96 #define DRV_NAME "ata_piix"
97 #define DRV_VERSION "2.12"
100 PIIX_IOCFG = 0x54, /* IDE I/O configuration register */
101 ICH5_PMR = 0x90, /* port mapping register */
102 ICH5_PCS = 0x92, /* port control and status */
108 PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
109 PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */
111 PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS,
112 PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
114 PIIX_80C_PRI = (1 << 5) | (1 << 4),
115 PIIX_80C_SEC = (1 << 7) | (1 << 6),
117 /* constants for mapping table */
123 NA = -2, /* not avaliable */
124 RV = -3, /* reserved */
126 PIIX_AHCI_DEVICE = 6,
128 /* host->flags bits */
129 PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
132 enum piix_controller_ids {
134 piix_pata_mwdma, /* PIIX3 MWDMA only */
135 piix_pata_33, /* PIIX4 at 33Mhz */
136 ich_pata_33, /* ICH up to UDMA 33 only */
137 ich_pata_66, /* ICH up to 66 Mhz */
138 ich_pata_100, /* ICH up to UDMA 100 */
144 ich8m_apple_sata, /* locks up on second port enable */
146 piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */
151 const u16 port_enable;
155 struct piix_host_priv {
160 static int piix_init_one(struct pci_dev *pdev,
161 const struct pci_device_id *ent);
162 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline);
163 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev);
164 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev);
165 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev);
166 static int ich_pata_cable_detect(struct ata_port *ap);
167 static u8 piix_vmw_bmdma_status(struct ata_port *ap);
168 static int piix_sidpr_scr_read(struct ata_link *link,
169 unsigned int reg, u32 *val);
170 static int piix_sidpr_scr_write(struct ata_link *link,
171 unsigned int reg, u32 val);
173 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
174 static int piix_pci_device_resume(struct pci_dev *pdev);
177 static unsigned int in_module_init = 1;
179 static const struct pci_device_id piix_pci_tbl[] = {
180 /* Intel PIIX3 for the 430HX etc */
181 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
183 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
184 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
185 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
186 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
188 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
190 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
192 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
193 /* Intel ICH (i810, i815, i840) UDMA 66*/
194 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
195 /* Intel ICH0 : UDMA 33*/
196 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
198 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
199 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
200 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
202 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
203 /* Intel ICH3 (E7500/1) UDMA 100 */
204 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
205 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
206 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
207 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
209 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
211 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
212 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
213 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
214 /* ICH6 (and 6) (i915) UDMA 100 */
215 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
216 /* ICH7/7-R (i945, i975) UDMA 100*/
217 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
218 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
219 /* ICH8 Mobile PATA Controller */
220 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
222 /* NOTE: The following PCI ids must be kept in sync with the
223 * list in drivers/pci/quirks.c.
227 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
229 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
230 /* 6300ESB (ICH5 variant with broken PCS present bits) */
231 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
232 /* 6300ESB pretending RAID */
233 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
234 /* 82801FB/FW (ICH6/ICH6W) */
235 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
236 /* 82801FR/FRW (ICH6R/ICH6RW) */
237 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
238 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
239 * Attach iff the controller is in IDE mode. */
240 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID,
241 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata },
242 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
243 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
244 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
245 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata },
246 /* Enterprise Southbridge 2 (631xESB/632xESB) */
247 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
248 /* SATA Controller 1 IDE (ICH8) */
249 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
250 /* SATA Controller 2 IDE (ICH8) */
251 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
252 /* Mobile SATA Controller IDE (ICH8M), Apple */
253 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
254 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata },
255 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata },
256 /* Mobile SATA Controller IDE (ICH8M) */
257 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
258 /* SATA Controller IDE (ICH9) */
259 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
260 /* SATA Controller IDE (ICH9) */
261 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
262 /* SATA Controller IDE (ICH9) */
263 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
264 /* SATA Controller IDE (ICH9M) */
265 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
266 /* SATA Controller IDE (ICH9M) */
267 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
268 /* SATA Controller IDE (ICH9M) */
269 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
270 /* SATA Controller IDE (Tolapai) */
271 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata },
272 /* SATA Controller IDE (ICH10) */
273 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
274 /* SATA Controller IDE (ICH10) */
275 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
276 /* SATA Controller IDE (ICH10) */
277 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
278 /* SATA Controller IDE (ICH10) */
279 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
280 /* SATA Controller IDE (PCH) */
281 { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
282 /* SATA Controller IDE (PCH) */
283 { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
284 /* SATA Controller IDE (PCH) */
285 { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
286 /* SATA Controller IDE (PCH) */
287 { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
289 { } /* terminate list */
292 static struct pci_driver piix_pci_driver = {
294 .id_table = piix_pci_tbl,
295 .probe = piix_init_one,
296 .remove = ata_pci_remove_one,
298 .suspend = piix_pci_device_suspend,
299 .resume = piix_pci_device_resume,
303 static struct scsi_host_template piix_sht = {
304 ATA_BMDMA_SHT(DRV_NAME),
307 static struct ata_port_operations piix_pata_ops = {
308 .inherits = &ata_bmdma_port_ops,
309 .cable_detect = ata_cable_40wire,
310 .set_piomode = piix_set_piomode,
311 .set_dmamode = piix_set_dmamode,
312 .prereset = piix_pata_prereset,
315 static struct ata_port_operations piix_vmw_ops = {
316 .inherits = &piix_pata_ops,
317 .bmdma_status = piix_vmw_bmdma_status,
320 static struct ata_port_operations ich_pata_ops = {
321 .inherits = &piix_pata_ops,
322 .cable_detect = ich_pata_cable_detect,
323 .set_dmamode = ich_set_dmamode,
326 static struct ata_port_operations piix_sata_ops = {
327 .inherits = &ata_bmdma_port_ops,
330 static struct ata_port_operations piix_sidpr_sata_ops = {
331 .inherits = &piix_sata_ops,
332 .hardreset = sata_std_hardreset,
333 .scr_read = piix_sidpr_scr_read,
334 .scr_write = piix_sidpr_scr_write,
337 static const struct piix_map_db ich5_map_db = {
341 /* PM PS SM SS MAP */
342 { P0, NA, P1, NA }, /* 000b */
343 { P1, NA, P0, NA }, /* 001b */
346 { P0, P1, IDE, IDE }, /* 100b */
347 { P1, P0, IDE, IDE }, /* 101b */
348 { IDE, IDE, P0, P1 }, /* 110b */
349 { IDE, IDE, P1, P0 }, /* 111b */
353 static const struct piix_map_db ich6_map_db = {
357 /* PM PS SM SS MAP */
358 { P0, P2, P1, P3 }, /* 00b */
359 { IDE, IDE, P1, P3 }, /* 01b */
360 { P0, P2, IDE, IDE }, /* 10b */
365 static const struct piix_map_db ich6m_map_db = {
369 /* Map 01b isn't specified in the doc but some notebooks use
370 * it anyway. MAP 01b have been spotted on both ICH6M and
374 /* PM PS SM SS MAP */
375 { P0, P2, NA, NA }, /* 00b */
376 { IDE, IDE, P1, P3 }, /* 01b */
377 { P0, P2, IDE, IDE }, /* 10b */
382 static const struct piix_map_db ich8_map_db = {
386 /* PM PS SM SS MAP */
387 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
389 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
394 static const struct piix_map_db ich8_2port_map_db = {
398 /* PM PS SM SS MAP */
399 { P0, NA, P1, NA }, /* 00b */
400 { RV, RV, RV, RV }, /* 01b */
401 { RV, RV, RV, RV }, /* 10b */
406 static const struct piix_map_db ich8m_apple_map_db = {
410 /* PM PS SM SS MAP */
411 { P0, NA, NA, NA }, /* 00b */
413 { P0, P2, IDE, IDE }, /* 10b */
418 static const struct piix_map_db tolapai_map_db = {
422 /* PM PS SM SS MAP */
423 { P0, NA, P1, NA }, /* 00b */
424 { RV, RV, RV, RV }, /* 01b */
425 { RV, RV, RV, RV }, /* 10b */
430 static const struct piix_map_db *piix_map_db_table[] = {
431 [ich5_sata] = &ich5_map_db,
432 [ich6_sata] = &ich6_map_db,
433 [ich6m_sata] = &ich6m_map_db,
434 [ich8_sata] = &ich8_map_db,
435 [ich8_2port_sata] = &ich8_2port_map_db,
436 [ich8m_apple_sata] = &ich8m_apple_map_db,
437 [tolapai_sata] = &tolapai_map_db,
440 static struct ata_port_info piix_port_info[] = {
441 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
443 .flags = PIIX_PATA_FLAGS,
444 .pio_mask = 0x1f, /* pio0-4 */
445 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
446 .port_ops = &piix_pata_ops,
449 [piix_pata_33] = /* PIIX4 at 33MHz */
451 .flags = PIIX_PATA_FLAGS,
452 .pio_mask = 0x1f, /* pio0-4 */
453 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
454 .udma_mask = ATA_UDMA_MASK_40C,
455 .port_ops = &piix_pata_ops,
458 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
460 .flags = PIIX_PATA_FLAGS,
461 .pio_mask = 0x1f, /* pio 0-4 */
462 .mwdma_mask = 0x06, /* Check: maybe 0x07 */
463 .udma_mask = ATA_UDMA2, /* UDMA33 */
464 .port_ops = &ich_pata_ops,
467 [ich_pata_66] = /* ICH controllers up to 66MHz */
469 .flags = PIIX_PATA_FLAGS,
470 .pio_mask = 0x1f, /* pio 0-4 */
471 .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */
472 .udma_mask = ATA_UDMA4,
473 .port_ops = &ich_pata_ops,
478 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
479 .pio_mask = 0x1f, /* pio0-4 */
480 .mwdma_mask = 0x06, /* mwdma1-2 */
481 .udma_mask = ATA_UDMA5, /* udma0-5 */
482 .port_ops = &ich_pata_ops,
487 .flags = PIIX_SATA_FLAGS,
488 .pio_mask = 0x1f, /* pio0-4 */
489 .mwdma_mask = 0x07, /* mwdma0-2 */
490 .udma_mask = ATA_UDMA6,
491 .port_ops = &piix_sata_ops,
496 .flags = PIIX_SATA_FLAGS,
497 .pio_mask = 0x1f, /* pio0-4 */
498 .mwdma_mask = 0x07, /* mwdma0-2 */
499 .udma_mask = ATA_UDMA6,
500 .port_ops = &piix_sata_ops,
505 .flags = PIIX_SATA_FLAGS,
506 .pio_mask = 0x1f, /* pio0-4 */
507 .mwdma_mask = 0x07, /* mwdma0-2 */
508 .udma_mask = ATA_UDMA6,
509 .port_ops = &piix_sata_ops,
514 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
515 .pio_mask = 0x1f, /* pio0-4 */
516 .mwdma_mask = 0x07, /* mwdma0-2 */
517 .udma_mask = ATA_UDMA6,
518 .port_ops = &piix_sata_ops,
523 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
524 .pio_mask = 0x1f, /* pio0-4 */
525 .mwdma_mask = 0x07, /* mwdma0-2 */
526 .udma_mask = ATA_UDMA6,
527 .port_ops = &piix_sata_ops,
532 .flags = PIIX_SATA_FLAGS,
533 .pio_mask = 0x1f, /* pio0-4 */
534 .mwdma_mask = 0x07, /* mwdma0-2 */
535 .udma_mask = ATA_UDMA6,
536 .port_ops = &piix_sata_ops,
541 .flags = PIIX_SATA_FLAGS,
542 .pio_mask = 0x1f, /* pio0-4 */
543 .mwdma_mask = 0x07, /* mwdma0-2 */
544 .udma_mask = ATA_UDMA6,
545 .port_ops = &piix_sata_ops,
550 .flags = PIIX_PATA_FLAGS,
551 .pio_mask = 0x1f, /* pio0-4 */
552 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
553 .udma_mask = ATA_UDMA_MASK_40C,
554 .port_ops = &piix_vmw_ops,
559 static struct pci_bits piix_enable_bits[] = {
560 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
561 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
564 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
565 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
566 MODULE_LICENSE("GPL");
567 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
568 MODULE_VERSION(DRV_VERSION);
577 * List of laptops that use short cables rather than 80 wire
580 static const struct ich_laptop ich_laptop[] = {
581 /* devid, subvendor, subdev */
582 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
583 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
584 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
585 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
586 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
587 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
588 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
589 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
590 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
591 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
597 * ich_pata_cable_detect - Probe host controller cable detect info
598 * @ap: Port for which cable detect info is desired
600 * Read 80c cable indicator from ATA PCI device's PCI config
601 * register. This register is normally set by firmware (BIOS).
604 * None (inherited from caller).
607 static int ich_pata_cable_detect(struct ata_port *ap)
609 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
610 const struct ich_laptop *lap = &ich_laptop[0];
613 /* Check for specials - Acer Aspire 5602WLMi */
614 while (lap->device) {
615 if (lap->device == pdev->device &&
616 lap->subvendor == pdev->subsystem_vendor &&
617 lap->subdevice == pdev->subsystem_device)
618 return ATA_CBL_PATA40_SHORT;
623 /* check BIOS cable detect results */
624 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
625 pci_read_config_byte(pdev, PIIX_IOCFG, &tmp);
626 if ((tmp & mask) == 0)
627 return ATA_CBL_PATA40;
628 return ATA_CBL_PATA80;
632 * piix_pata_prereset - prereset for PATA host controller
634 * @deadline: deadline jiffies for the operation
637 * None (inherited from caller).
639 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
641 struct ata_port *ap = link->ap;
642 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
644 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
646 return ata_sff_prereset(link, deadline);
650 * piix_set_piomode - Initialize host controller PATA PIO timings
651 * @ap: Port whose timings we are configuring
654 * Set PIO mode for device, in host controller PCI config space.
657 * None (inherited from caller).
660 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
662 unsigned int pio = adev->pio_mode - XFER_PIO_0;
663 struct pci_dev *dev = to_pci_dev(ap->host->dev);
664 unsigned int is_slave = (adev->devno != 0);
665 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
666 unsigned int slave_port = 0x44;
673 * See Intel Document 298600-004 for the timing programing rules
674 * for ICH controllers.
677 static const /* ISP RTC */
678 u8 timings[][2] = { { 0, 0 },
685 control |= 1; /* TIME1 enable */
686 if (ata_pio_need_iordy(adev))
687 control |= 2; /* IE enable */
689 /* Intel specifies that the PPE functionality is for disk only */
690 if (adev->class == ATA_DEV_ATA)
691 control |= 4; /* PPE enable */
693 /* PIO configuration clears DTE unconditionally. It will be
694 * programmed in set_dmamode which is guaranteed to be called
695 * after set_piomode if any DMA mode is available.
697 pci_read_config_word(dev, master_port, &master_data);
699 /* clear TIME1|IE1|PPE1|DTE1 */
700 master_data &= 0xff0f;
701 /* Enable SITRE (separate slave timing register) */
702 master_data |= 0x4000;
703 /* enable PPE1, IE1 and TIME1 as needed */
704 master_data |= (control << 4);
705 pci_read_config_byte(dev, slave_port, &slave_data);
706 slave_data &= (ap->port_no ? 0x0f : 0xf0);
707 /* Load the timing nibble for this slave */
708 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
709 << (ap->port_no ? 4 : 0);
711 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
712 master_data &= 0xccf0;
713 /* Enable PPE, IE and TIME as appropriate */
714 master_data |= control;
715 /* load ISP and RCT */
717 (timings[pio][0] << 12) |
718 (timings[pio][1] << 8);
720 pci_write_config_word(dev, master_port, master_data);
722 pci_write_config_byte(dev, slave_port, slave_data);
724 /* Ensure the UDMA bit is off - it will be turned back on if
728 pci_read_config_byte(dev, 0x48, &udma_enable);
729 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
730 pci_write_config_byte(dev, 0x48, udma_enable);
735 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
736 * @ap: Port whose timings we are configuring
737 * @adev: Drive in question
738 * @udma: udma mode, 0 - 6
739 * @isich: set if the chip is an ICH device
741 * Set UDMA mode for device, in host controller PCI config space.
744 * None (inherited from caller).
747 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
749 struct pci_dev *dev = to_pci_dev(ap->host->dev);
750 u8 master_port = ap->port_no ? 0x42 : 0x40;
752 u8 speed = adev->dma_mode;
753 int devid = adev->devno + 2 * ap->port_no;
756 static const /* ISP RTC */
757 u8 timings[][2] = { { 0, 0 },
763 pci_read_config_word(dev, master_port, &master_data);
765 pci_read_config_byte(dev, 0x48, &udma_enable);
767 if (speed >= XFER_UDMA_0) {
768 unsigned int udma = adev->dma_mode - XFER_UDMA_0;
771 int u_clock, u_speed;
774 * UDMA is handled by a combination of clock switching and
775 * selection of dividers
777 * Handy rule: Odd modes are UDMATIMx 01, even are 02
778 * except UDMA0 which is 00
780 u_speed = min(2 - (udma & 1), udma);
782 u_clock = 0x1000; /* 100Mhz */
784 u_clock = 1; /* 66Mhz */
786 u_clock = 0; /* 33Mhz */
788 udma_enable |= (1 << devid);
790 /* Load the CT/RP selection */
791 pci_read_config_word(dev, 0x4A, &udma_timing);
792 udma_timing &= ~(3 << (4 * devid));
793 udma_timing |= u_speed << (4 * devid);
794 pci_write_config_word(dev, 0x4A, udma_timing);
797 /* Select a 33/66/100Mhz clock */
798 pci_read_config_word(dev, 0x54, &ideconf);
799 ideconf &= ~(0x1001 << devid);
800 ideconf |= u_clock << devid;
801 /* For ICH or later we should set bit 10 for better
802 performance (WR_PingPong_En) */
803 pci_write_config_word(dev, 0x54, ideconf);
807 * MWDMA is driven by the PIO timings. We must also enable
808 * IORDY unconditionally along with TIME1. PPE has already
809 * been set when the PIO timing was set.
811 unsigned int mwdma = adev->dma_mode - XFER_MW_DMA_0;
812 unsigned int control;
814 const unsigned int needed_pio[3] = {
815 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
817 int pio = needed_pio[mwdma] - XFER_PIO_0;
819 control = 3; /* IORDY|TIME1 */
821 /* If the drive MWDMA is faster than it can do PIO then
822 we must force PIO into PIO0 */
824 if (adev->pio_mode < needed_pio[mwdma])
825 /* Enable DMA timing only */
826 control |= 8; /* PIO cycles in PIO0 */
828 if (adev->devno) { /* Slave */
829 master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */
830 master_data |= control << 4;
831 pci_read_config_byte(dev, 0x44, &slave_data);
832 slave_data &= (ap->port_no ? 0x0f : 0xf0);
833 /* Load the matching timing */
834 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
835 pci_write_config_byte(dev, 0x44, slave_data);
836 } else { /* Master */
837 master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
838 and master timing bits */
839 master_data |= control;
841 (timings[pio][0] << 12) |
842 (timings[pio][1] << 8);
846 udma_enable &= ~(1 << devid);
847 pci_write_config_word(dev, master_port, master_data);
850 /* Don't scribble on 0x48 if the controller does not support UDMA */
852 pci_write_config_byte(dev, 0x48, udma_enable);
856 * piix_set_dmamode - Initialize host controller PATA DMA timings
857 * @ap: Port whose timings we are configuring
860 * Set MW/UDMA mode for device, in host controller PCI config space.
863 * None (inherited from caller).
866 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
868 do_pata_set_dmamode(ap, adev, 0);
872 * ich_set_dmamode - Initialize host controller PATA DMA timings
873 * @ap: Port whose timings we are configuring
876 * Set MW/UDMA mode for device, in host controller PCI config space.
879 * None (inherited from caller).
882 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
884 do_pata_set_dmamode(ap, adev, 1);
888 * Serial ATA Index/Data Pair Superset Registers access
890 * Beginning from ICH8, there's a sane way to access SCRs using index
891 * and data register pair located at BAR5 which means that we have
892 * separate SCRs for master and slave. This is handled using libata
893 * slave_link facility.
895 static const int piix_sidx_map[] = {
901 static void piix_sidpr_sel(struct ata_link *link, unsigned int reg)
903 struct ata_port *ap = link->ap;
904 struct piix_host_priv *hpriv = ap->host->private_data;
906 iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],
907 hpriv->sidpr + PIIX_SIDPR_IDX);
910 static int piix_sidpr_scr_read(struct ata_link *link,
911 unsigned int reg, u32 *val)
913 struct piix_host_priv *hpriv = link->ap->host->private_data;
915 if (reg >= ARRAY_SIZE(piix_sidx_map))
918 piix_sidpr_sel(link, reg);
919 *val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
923 static int piix_sidpr_scr_write(struct ata_link *link,
924 unsigned int reg, u32 val)
926 struct piix_host_priv *hpriv = link->ap->host->private_data;
928 if (reg >= ARRAY_SIZE(piix_sidx_map))
931 piix_sidpr_sel(link, reg);
932 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
937 static int piix_broken_suspend(void)
939 static const struct dmi_system_id sysids[] = {
943 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
944 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
950 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
951 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
957 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
958 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
964 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
965 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"),
971 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
972 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
978 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
979 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
985 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
986 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
992 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
993 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
997 .ident = "Satellite R20",
999 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1000 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
1004 .ident = "Satellite R25",
1006 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1007 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
1011 .ident = "Satellite U200",
1013 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1014 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
1018 .ident = "Satellite U200",
1020 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1021 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
1025 .ident = "Satellite Pro U200",
1027 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1028 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
1032 .ident = "Satellite U205",
1034 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1035 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
1039 .ident = "SATELLITE U205",
1041 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1042 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
1046 .ident = "Portege M500",
1048 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1049 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
1053 { } /* terminate list */
1055 static const char *oemstrs[] = {
1060 if (dmi_check_system(sysids))
1063 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
1064 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
1070 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1072 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1073 unsigned long flags;
1076 rc = ata_host_suspend(host, mesg);
1080 /* Some braindamaged ACPI suspend implementations expect the
1081 * controller to be awake on entry; otherwise, it burns cpu
1082 * cycles and power trying to do something to the sleeping
1085 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
1086 pci_save_state(pdev);
1088 /* mark its power state as "unknown", since we don't
1089 * know if e.g. the BIOS will change its device state
1092 if (pdev->current_state == PCI_D0)
1093 pdev->current_state = PCI_UNKNOWN;
1095 /* tell resume that it's waking up from broken suspend */
1096 spin_lock_irqsave(&host->lock, flags);
1097 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1098 spin_unlock_irqrestore(&host->lock, flags);
1100 ata_pci_device_do_suspend(pdev, mesg);
1105 static int piix_pci_device_resume(struct pci_dev *pdev)
1107 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1108 unsigned long flags;
1111 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1112 spin_lock_irqsave(&host->lock, flags);
1113 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1114 spin_unlock_irqrestore(&host->lock, flags);
1116 pci_set_power_state(pdev, PCI_D0);
1117 pci_restore_state(pdev);
1119 /* PCI device wasn't disabled during suspend. Use
1120 * pci_reenable_device() to avoid affecting the enable
1123 rc = pci_reenable_device(pdev);
1125 dev_printk(KERN_ERR, &pdev->dev, "failed to enable "
1126 "device after resume (%d)\n", rc);
1128 rc = ata_pci_device_do_resume(pdev);
1131 ata_host_resume(host);
1137 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1139 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1142 #define AHCI_PCI_BAR 5
1143 #define AHCI_GLOBAL_CTL 0x04
1144 #define AHCI_ENABLE (1 << 31)
1145 static int piix_disable_ahci(struct pci_dev *pdev)
1151 /* BUG: pci_enable_device has not yet been called. This
1152 * works because this device is usually set up by BIOS.
1155 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1156 !pci_resource_len(pdev, AHCI_PCI_BAR))
1159 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1163 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1164 if (tmp & AHCI_ENABLE) {
1165 tmp &= ~AHCI_ENABLE;
1166 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1168 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1169 if (tmp & AHCI_ENABLE)
1173 pci_iounmap(pdev, mmio);
1178 * piix_check_450nx_errata - Check for problem 450NX setup
1179 * @ata_dev: the PCI device to check
1181 * Check for the present of 450NX errata #19 and errata #25. If
1182 * they are found return an error code so we can turn off DMA
1185 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
1187 struct pci_dev *pdev = NULL;
1189 int no_piix_dma = 0;
1191 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1192 /* Look for 450NX PXB. Check for problem configurations
1193 A PCI quirk checks bit 6 already */
1194 pci_read_config_word(pdev, 0x41, &cfg);
1195 /* Only on the original revision: IDE DMA can hang */
1196 if (pdev->revision == 0x00)
1198 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1199 else if (cfg & (1<<14) && pdev->revision < 5)
1203 dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
1204 if (no_piix_dma == 2)
1205 dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
1209 static void __devinit piix_init_pcs(struct ata_host *host,
1210 const struct piix_map_db *map_db)
1212 struct pci_dev *pdev = to_pci_dev(host->dev);
1215 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1217 new_pcs = pcs | map_db->port_enable;
1219 if (new_pcs != pcs) {
1220 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1221 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1226 static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
1227 struct ata_port_info *pinfo,
1228 const struct piix_map_db *map_db)
1231 int i, invalid_map = 0;
1234 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1236 map = map_db->map[map_value & map_db->mask];
1238 dev_printk(KERN_INFO, &pdev->dev, "MAP [");
1239 for (i = 0; i < 4; i++) {
1251 WARN_ON((i & 1) || map[i + 1] != IDE);
1252 pinfo[i / 2] = piix_port_info[ich_pata_100];
1258 printk(" P%d", map[i]);
1260 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1267 dev_printk(KERN_ERR, &pdev->dev,
1268 "invalid MAP value %u\n", map_value);
1273 static int __devinit piix_init_sidpr(struct ata_host *host)
1275 struct pci_dev *pdev = to_pci_dev(host->dev);
1276 struct piix_host_priv *hpriv = host->private_data;
1277 struct ata_link *link0 = &host->ports[0]->link;
1281 /* check for availability */
1282 for (i = 0; i < 4; i++)
1283 if (hpriv->map[i] == IDE)
1286 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1289 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1290 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1293 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1296 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1298 /* SCR access via SIDPR doesn't work on some configurations.
1299 * Give it a test drive by inhibiting power save modes which
1302 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1304 /* if IPM is already 3, SCR access is probably working. Don't
1305 * un-inhibit power save modes as BIOS might have inhibited
1306 * them for a reason.
1308 if ((scontrol & 0xf00) != 0x300) {
1310 piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol);
1311 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1313 if ((scontrol & 0xf00) != 0x300) {
1314 dev_printk(KERN_INFO, host->dev, "SCR access via "
1315 "SIDPR is available but doesn't work\n");
1320 /* okay, SCRs available, set ops and ask libata for slave_link */
1321 for (i = 0; i < 2; i++) {
1322 struct ata_port *ap = host->ports[i];
1324 ap->ops = &piix_sidpr_sata_ops;
1326 if (ap->flags & ATA_FLAG_SLAVE_POSS) {
1327 rc = ata_slave_link_init(ap);
1336 static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
1338 static const struct dmi_system_id sysids[] = {
1340 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1341 * isn't used to boot the system which
1342 * disables the channel.
1346 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1347 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1351 { } /* terminate list */
1355 if (!dmi_check_system(sysids))
1358 /* The datasheet says that bit 18 is NOOP but certain systems
1359 * seem to use it to disable a channel. Clear the bit on the
1362 pci_read_config_dword(pdev, PIIX_IOCFG, &iocfg);
1363 if (iocfg & (1 << 18)) {
1364 dev_printk(KERN_INFO, &pdev->dev,
1365 "applying IOCFG bit18 quirk\n");
1366 iocfg &= ~(1 << 18);
1367 pci_write_config_dword(pdev, PIIX_IOCFG, iocfg);
1372 * piix_init_one - Register PIIX ATA PCI device with kernel services
1373 * @pdev: PCI device to register
1374 * @ent: Entry in piix_pci_tbl matching with @pdev
1376 * Called from kernel PCI layer. We probe for combined mode (sigh),
1377 * and then hand over control to libata, for it to do the rest.
1380 * Inherited from PCI layer (may sleep).
1383 * Zero on success, or -ERRNO value.
1386 static int __devinit piix_init_one(struct pci_dev *pdev,
1387 const struct pci_device_id *ent)
1389 static int printed_version;
1390 struct device *dev = &pdev->dev;
1391 struct ata_port_info port_info[2];
1392 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1393 unsigned long port_flags;
1394 struct ata_host *host;
1395 struct piix_host_priv *hpriv;
1398 if (!printed_version++)
1399 dev_printk(KERN_DEBUG, &pdev->dev,
1400 "version " DRV_VERSION "\n");
1402 /* no hotplugging support (FIXME) */
1403 if (!in_module_init)
1406 port_info[0] = piix_port_info[ent->driver_data];
1407 port_info[1] = piix_port_info[ent->driver_data];
1409 port_flags = port_info[0].flags;
1411 /* enable device and prepare host */
1412 rc = pcim_enable_device(pdev);
1416 /* ICH6R may be driven by either ata_piix or ahci driver
1417 * regardless of BIOS configuration. Make sure AHCI mode is
1420 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {
1421 rc = piix_disable_ahci(pdev);
1426 /* SATA map init can change port_info, do it before prepping host */
1427 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1431 if (port_flags & ATA_FLAG_SATA)
1432 hpriv->map = piix_init_sata_map(pdev, port_info,
1433 piix_map_db_table[ent->driver_data]);
1435 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
1438 host->private_data = hpriv;
1440 /* initialize controller */
1441 if (port_flags & ATA_FLAG_SATA) {
1442 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1443 rc = piix_init_sidpr(host);
1448 /* apply IOCFG bit18 quirk */
1449 piix_iocfg_bit18_quirk(pdev);
1451 /* On ICH5, some BIOSen disable the interrupt using the
1452 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1453 * On ICH6, this bit has the same effect, but only when
1454 * MSI is disabled (and it is disabled, as we don't use
1455 * message-signalled interrupts currently).
1457 if (port_flags & PIIX_FLAG_CHECKINTR)
1460 if (piix_check_450nx_errata(pdev)) {
1461 /* This writes into the master table but it does not
1462 really matter for this errata as we will apply it to
1463 all the PIIX devices on the board */
1464 host->ports[0]->mwdma_mask = 0;
1465 host->ports[0]->udma_mask = 0;
1466 host->ports[1]->mwdma_mask = 0;
1467 host->ports[1]->udma_mask = 0;
1470 pci_set_master(pdev);
1471 return ata_pci_sff_activate_host(host, ata_sff_interrupt, &piix_sht);
1474 static int __init piix_init(void)
1478 DPRINTK("pci_register_driver\n");
1479 rc = pci_register_driver(&piix_pci_driver);
1489 static void __exit piix_exit(void)
1491 pci_unregister_driver(&piix_pci_driver);
1494 module_init(piix_init);
1495 module_exit(piix_exit);