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_port *ap, unsigned int reg, u32 *val);
169 static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val);
171 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
172 static int piix_pci_device_resume(struct pci_dev *pdev);
175 static unsigned int in_module_init = 1;
177 static const struct pci_device_id piix_pci_tbl[] = {
178 /* Intel PIIX3 for the 430HX etc */
179 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
181 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
182 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
183 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
184 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
186 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
188 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
190 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
191 /* Intel ICH (i810, i815, i840) UDMA 66*/
192 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
193 /* Intel ICH0 : UDMA 33*/
194 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
196 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
197 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
198 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
200 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
201 /* Intel ICH3 (E7500/1) UDMA 100 */
202 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
203 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
204 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
205 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
207 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
209 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
210 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
211 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
212 /* ICH6 (and 6) (i915) UDMA 100 */
213 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
214 /* ICH7/7-R (i945, i975) UDMA 100*/
215 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
216 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
217 /* ICH8 Mobile PATA Controller */
218 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
220 /* NOTE: The following PCI ids must be kept in sync with the
221 * list in drivers/pci/quirks.c.
225 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
227 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
228 /* 6300ESB (ICH5 variant with broken PCS present bits) */
229 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
230 /* 6300ESB pretending RAID */
231 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
232 /* 82801FB/FW (ICH6/ICH6W) */
233 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
234 /* 82801FR/FRW (ICH6R/ICH6RW) */
235 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
236 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
237 * Attach iff the controller is in IDE mode. */
238 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID,
239 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata },
240 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
241 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
242 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
243 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata },
244 /* Enterprise Southbridge 2 (631xESB/632xESB) */
245 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
246 /* SATA Controller 1 IDE (ICH8) */
247 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
248 /* SATA Controller 2 IDE (ICH8) */
249 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
250 /* Mobile SATA Controller IDE (ICH8M) */
251 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
252 /* Mobile SATA Controller IDE (ICH8M), Apple */
253 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
254 /* SATA Controller IDE (ICH9) */
255 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
256 /* SATA Controller IDE (ICH9) */
257 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
258 /* SATA Controller IDE (ICH9) */
259 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
260 /* SATA Controller IDE (ICH9M) */
261 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
262 /* SATA Controller IDE (ICH9M) */
263 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
264 /* SATA Controller IDE (ICH9M) */
265 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
266 /* SATA Controller IDE (Tolapai) */
267 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata },
268 /* SATA Controller IDE (ICH10) */
269 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
270 /* SATA Controller IDE (ICH10) */
271 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
272 /* SATA Controller IDE (ICH10) */
273 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
274 /* SATA Controller IDE (ICH10) */
275 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
277 { } /* terminate list */
280 static struct pci_driver piix_pci_driver = {
282 .id_table = piix_pci_tbl,
283 .probe = piix_init_one,
284 .remove = ata_pci_remove_one,
286 .suspend = piix_pci_device_suspend,
287 .resume = piix_pci_device_resume,
291 static struct scsi_host_template piix_sht = {
292 ATA_BMDMA_SHT(DRV_NAME),
295 static struct ata_port_operations piix_pata_ops = {
296 .inherits = &ata_bmdma_port_ops,
297 .cable_detect = ata_cable_40wire,
298 .set_piomode = piix_set_piomode,
299 .set_dmamode = piix_set_dmamode,
300 .prereset = piix_pata_prereset,
303 static struct ata_port_operations piix_vmw_ops = {
304 .inherits = &piix_pata_ops,
305 .bmdma_status = piix_vmw_bmdma_status,
308 static struct ata_port_operations ich_pata_ops = {
309 .inherits = &piix_pata_ops,
310 .cable_detect = ich_pata_cable_detect,
311 .set_dmamode = ich_set_dmamode,
314 static struct ata_port_operations piix_sata_ops = {
315 .inherits = &ata_bmdma_port_ops,
318 static struct ata_port_operations piix_sidpr_sata_ops = {
319 .inherits = &piix_sata_ops,
320 .hardreset = sata_std_hardreset,
321 .scr_read = piix_sidpr_scr_read,
322 .scr_write = piix_sidpr_scr_write,
325 static const struct piix_map_db ich5_map_db = {
329 /* PM PS SM SS MAP */
330 { P0, NA, P1, NA }, /* 000b */
331 { P1, NA, P0, NA }, /* 001b */
334 { P0, P1, IDE, IDE }, /* 100b */
335 { P1, P0, IDE, IDE }, /* 101b */
336 { IDE, IDE, P0, P1 }, /* 110b */
337 { IDE, IDE, P1, P0 }, /* 111b */
341 static const struct piix_map_db ich6_map_db = {
345 /* PM PS SM SS MAP */
346 { P0, P2, P1, P3 }, /* 00b */
347 { IDE, IDE, P1, P3 }, /* 01b */
348 { P0, P2, IDE, IDE }, /* 10b */
353 static const struct piix_map_db ich6m_map_db = {
357 /* Map 01b isn't specified in the doc but some notebooks use
358 * it anyway. MAP 01b have been spotted on both ICH6M and
362 /* PM PS SM SS MAP */
363 { P0, P2, NA, NA }, /* 00b */
364 { IDE, IDE, P1, P3 }, /* 01b */
365 { P0, P2, IDE, IDE }, /* 10b */
370 static const struct piix_map_db ich8_map_db = {
374 /* PM PS SM SS MAP */
375 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
377 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
382 static const struct piix_map_db ich8_2port_map_db = {
386 /* PM PS SM SS MAP */
387 { P0, NA, P1, NA }, /* 00b */
388 { RV, RV, RV, RV }, /* 01b */
389 { RV, RV, RV, RV }, /* 10b */
394 static const struct piix_map_db ich8m_apple_map_db = {
398 /* PM PS SM SS MAP */
399 { P0, NA, NA, NA }, /* 00b */
401 { P0, P2, IDE, IDE }, /* 10b */
406 static const struct piix_map_db tolapai_map_db = {
410 /* PM PS SM SS MAP */
411 { P0, NA, P1, NA }, /* 00b */
412 { RV, RV, RV, RV }, /* 01b */
413 { RV, RV, RV, RV }, /* 10b */
418 static const struct piix_map_db *piix_map_db_table[] = {
419 [ich5_sata] = &ich5_map_db,
420 [ich6_sata] = &ich6_map_db,
421 [ich6m_sata] = &ich6m_map_db,
422 [ich8_sata] = &ich8_map_db,
423 [ich8_2port_sata] = &ich8_2port_map_db,
424 [ich8m_apple_sata] = &ich8m_apple_map_db,
425 [tolapai_sata] = &tolapai_map_db,
428 static struct ata_port_info piix_port_info[] = {
429 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
431 .flags = PIIX_PATA_FLAGS,
432 .pio_mask = 0x1f, /* pio0-4 */
433 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
434 .port_ops = &piix_pata_ops,
437 [piix_pata_33] = /* PIIX4 at 33MHz */
439 .flags = PIIX_PATA_FLAGS,
440 .pio_mask = 0x1f, /* pio0-4 */
441 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
442 .udma_mask = ATA_UDMA_MASK_40C,
443 .port_ops = &piix_pata_ops,
446 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
448 .flags = PIIX_PATA_FLAGS,
449 .pio_mask = 0x1f, /* pio 0-4 */
450 .mwdma_mask = 0x06, /* Check: maybe 0x07 */
451 .udma_mask = ATA_UDMA2, /* UDMA33 */
452 .port_ops = &ich_pata_ops,
455 [ich_pata_66] = /* ICH controllers up to 66MHz */
457 .flags = PIIX_PATA_FLAGS,
458 .pio_mask = 0x1f, /* pio 0-4 */
459 .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */
460 .udma_mask = ATA_UDMA4,
461 .port_ops = &ich_pata_ops,
466 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
467 .pio_mask = 0x1f, /* pio0-4 */
468 .mwdma_mask = 0x06, /* mwdma1-2 */
469 .udma_mask = ATA_UDMA5, /* udma0-5 */
470 .port_ops = &ich_pata_ops,
475 .flags = PIIX_SATA_FLAGS,
476 .pio_mask = 0x1f, /* pio0-4 */
477 .mwdma_mask = 0x07, /* mwdma0-2 */
478 .udma_mask = ATA_UDMA6,
479 .port_ops = &piix_sata_ops,
484 .flags = PIIX_SATA_FLAGS,
485 .pio_mask = 0x1f, /* pio0-4 */
486 .mwdma_mask = 0x07, /* mwdma0-2 */
487 .udma_mask = ATA_UDMA6,
488 .port_ops = &piix_sata_ops,
493 .flags = PIIX_SATA_FLAGS,
494 .pio_mask = 0x1f, /* pio0-4 */
495 .mwdma_mask = 0x07, /* mwdma0-2 */
496 .udma_mask = ATA_UDMA6,
497 .port_ops = &piix_sata_ops,
502 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
503 .pio_mask = 0x1f, /* pio0-4 */
504 .mwdma_mask = 0x07, /* mwdma0-2 */
505 .udma_mask = ATA_UDMA6,
506 .port_ops = &piix_sata_ops,
511 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
512 .pio_mask = 0x1f, /* pio0-4 */
513 .mwdma_mask = 0x07, /* mwdma0-2 */
514 .udma_mask = ATA_UDMA6,
515 .port_ops = &piix_sata_ops,
520 .flags = PIIX_SATA_FLAGS,
521 .pio_mask = 0x1f, /* pio0-4 */
522 .mwdma_mask = 0x07, /* mwdma0-2 */
523 .udma_mask = ATA_UDMA6,
524 .port_ops = &piix_sata_ops,
529 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
530 .pio_mask = 0x1f, /* pio0-4 */
531 .mwdma_mask = 0x07, /* mwdma0-2 */
532 .udma_mask = ATA_UDMA6,
533 .port_ops = &piix_sata_ops,
538 .flags = PIIX_PATA_FLAGS,
539 .pio_mask = 0x1f, /* pio0-4 */
540 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
541 .udma_mask = ATA_UDMA_MASK_40C,
542 .port_ops = &piix_vmw_ops,
547 static struct pci_bits piix_enable_bits[] = {
548 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
549 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
552 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
553 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
554 MODULE_LICENSE("GPL");
555 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
556 MODULE_VERSION(DRV_VERSION);
565 * List of laptops that use short cables rather than 80 wire
568 static const struct ich_laptop ich_laptop[] = {
569 /* devid, subvendor, subdev */
570 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
571 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
572 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
573 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
574 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
575 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
576 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
582 * ich_pata_cable_detect - Probe host controller cable detect info
583 * @ap: Port for which cable detect info is desired
585 * Read 80c cable indicator from ATA PCI device's PCI config
586 * register. This register is normally set by firmware (BIOS).
589 * None (inherited from caller).
592 static int ich_pata_cable_detect(struct ata_port *ap)
594 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
595 const struct ich_laptop *lap = &ich_laptop[0];
598 /* Check for specials - Acer Aspire 5602WLMi */
599 while (lap->device) {
600 if (lap->device == pdev->device &&
601 lap->subvendor == pdev->subsystem_vendor &&
602 lap->subdevice == pdev->subsystem_device)
603 return ATA_CBL_PATA40_SHORT;
608 /* check BIOS cable detect results */
609 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
610 pci_read_config_byte(pdev, PIIX_IOCFG, &tmp);
611 if ((tmp & mask) == 0)
612 return ATA_CBL_PATA40;
613 return ATA_CBL_PATA80;
617 * piix_pata_prereset - prereset for PATA host controller
619 * @deadline: deadline jiffies for the operation
622 * None (inherited from caller).
624 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
626 struct ata_port *ap = link->ap;
627 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
629 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
631 return ata_sff_prereset(link, deadline);
635 * piix_set_piomode - Initialize host controller PATA PIO timings
636 * @ap: Port whose timings we are configuring
639 * Set PIO mode for device, in host controller PCI config space.
642 * None (inherited from caller).
645 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
647 unsigned int pio = adev->pio_mode - XFER_PIO_0;
648 struct pci_dev *dev = to_pci_dev(ap->host->dev);
649 unsigned int is_slave = (adev->devno != 0);
650 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
651 unsigned int slave_port = 0x44;
658 * See Intel Document 298600-004 for the timing programing rules
659 * for ICH controllers.
662 static const /* ISP RTC */
663 u8 timings[][2] = { { 0, 0 },
670 control |= 1; /* TIME1 enable */
671 if (ata_pio_need_iordy(adev))
672 control |= 2; /* IE enable */
674 /* Intel specifies that the PPE functionality is for disk only */
675 if (adev->class == ATA_DEV_ATA)
676 control |= 4; /* PPE enable */
678 /* PIO configuration clears DTE unconditionally. It will be
679 * programmed in set_dmamode which is guaranteed to be called
680 * after set_piomode if any DMA mode is available.
682 pci_read_config_word(dev, master_port, &master_data);
684 /* clear TIME1|IE1|PPE1|DTE1 */
685 master_data &= 0xff0f;
686 /* Enable SITRE (separate slave timing register) */
687 master_data |= 0x4000;
688 /* enable PPE1, IE1 and TIME1 as needed */
689 master_data |= (control << 4);
690 pci_read_config_byte(dev, slave_port, &slave_data);
691 slave_data &= (ap->port_no ? 0x0f : 0xf0);
692 /* Load the timing nibble for this slave */
693 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
694 << (ap->port_no ? 4 : 0);
696 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
697 master_data &= 0xccf0;
698 /* Enable PPE, IE and TIME as appropriate */
699 master_data |= control;
700 /* load ISP and RCT */
702 (timings[pio][0] << 12) |
703 (timings[pio][1] << 8);
705 pci_write_config_word(dev, master_port, master_data);
707 pci_write_config_byte(dev, slave_port, slave_data);
709 /* Ensure the UDMA bit is off - it will be turned back on if
713 pci_read_config_byte(dev, 0x48, &udma_enable);
714 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
715 pci_write_config_byte(dev, 0x48, udma_enable);
720 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
721 * @ap: Port whose timings we are configuring
722 * @adev: Drive in question
723 * @udma: udma mode, 0 - 6
724 * @isich: set if the chip is an ICH device
726 * Set UDMA mode for device, in host controller PCI config space.
729 * None (inherited from caller).
732 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
734 struct pci_dev *dev = to_pci_dev(ap->host->dev);
735 u8 master_port = ap->port_no ? 0x42 : 0x40;
737 u8 speed = adev->dma_mode;
738 int devid = adev->devno + 2 * ap->port_no;
741 static const /* ISP RTC */
742 u8 timings[][2] = { { 0, 0 },
748 pci_read_config_word(dev, master_port, &master_data);
750 pci_read_config_byte(dev, 0x48, &udma_enable);
752 if (speed >= XFER_UDMA_0) {
753 unsigned int udma = adev->dma_mode - XFER_UDMA_0;
756 int u_clock, u_speed;
759 * UDMA is handled by a combination of clock switching and
760 * selection of dividers
762 * Handy rule: Odd modes are UDMATIMx 01, even are 02
763 * except UDMA0 which is 00
765 u_speed = min(2 - (udma & 1), udma);
767 u_clock = 0x1000; /* 100Mhz */
769 u_clock = 1; /* 66Mhz */
771 u_clock = 0; /* 33Mhz */
773 udma_enable |= (1 << devid);
775 /* Load the CT/RP selection */
776 pci_read_config_word(dev, 0x4A, &udma_timing);
777 udma_timing &= ~(3 << (4 * devid));
778 udma_timing |= u_speed << (4 * devid);
779 pci_write_config_word(dev, 0x4A, udma_timing);
782 /* Select a 33/66/100Mhz clock */
783 pci_read_config_word(dev, 0x54, &ideconf);
784 ideconf &= ~(0x1001 << devid);
785 ideconf |= u_clock << devid;
786 /* For ICH or later we should set bit 10 for better
787 performance (WR_PingPong_En) */
788 pci_write_config_word(dev, 0x54, ideconf);
792 * MWDMA is driven by the PIO timings. We must also enable
793 * IORDY unconditionally along with TIME1. PPE has already
794 * been set when the PIO timing was set.
796 unsigned int mwdma = adev->dma_mode - XFER_MW_DMA_0;
797 unsigned int control;
799 const unsigned int needed_pio[3] = {
800 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
802 int pio = needed_pio[mwdma] - XFER_PIO_0;
804 control = 3; /* IORDY|TIME1 */
806 /* If the drive MWDMA is faster than it can do PIO then
807 we must force PIO into PIO0 */
809 if (adev->pio_mode < needed_pio[mwdma])
810 /* Enable DMA timing only */
811 control |= 8; /* PIO cycles in PIO0 */
813 if (adev->devno) { /* Slave */
814 master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */
815 master_data |= control << 4;
816 pci_read_config_byte(dev, 0x44, &slave_data);
817 slave_data &= (ap->port_no ? 0x0f : 0xf0);
818 /* Load the matching timing */
819 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
820 pci_write_config_byte(dev, 0x44, slave_data);
821 } else { /* Master */
822 master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
823 and master timing bits */
824 master_data |= control;
826 (timings[pio][0] << 12) |
827 (timings[pio][1] << 8);
831 udma_enable &= ~(1 << devid);
832 pci_write_config_word(dev, master_port, master_data);
835 /* Don't scribble on 0x48 if the controller does not support UDMA */
837 pci_write_config_byte(dev, 0x48, udma_enable);
841 * piix_set_dmamode - Initialize host controller PATA DMA timings
842 * @ap: Port whose timings we are configuring
845 * Set MW/UDMA mode for device, in host controller PCI config space.
848 * None (inherited from caller).
851 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
853 do_pata_set_dmamode(ap, adev, 0);
857 * ich_set_dmamode - Initialize host controller PATA DMA timings
858 * @ap: Port whose timings we are configuring
861 * Set MW/UDMA mode for device, in host controller PCI config space.
864 * None (inherited from caller).
867 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
869 do_pata_set_dmamode(ap, adev, 1);
873 * Serial ATA Index/Data Pair Superset Registers access
875 * Beginning from ICH8, there's a sane way to access SCRs using index
876 * and data register pair located at BAR5. This creates an
877 * interesting problem of mapping two SCRs to one port.
879 * Although they have separate SCRs, the master and slave aren't
880 * independent enough to be treated as separate links - e.g. softreset
881 * resets both. Also, there's no protocol defined for hard resetting
882 * singled device sharing the virtual port (no defined way to acquire
883 * device signature). This is worked around by merging the SCR values
884 * into one sensible value and requesting follow-up SRST after
887 * SCR merging is perfomed in nibbles which is the unit contents in
888 * SCRs are organized. If two values are equal, the value is used.
889 * When they differ, merge table which lists precedence of possible
890 * values is consulted and the first match or the last entry when
891 * nothing matches is used. When there's no merge table for the
892 * specific nibble, value from the first port is used.
894 static const int piix_sidx_map[] = {
900 static void piix_sidpr_sel(struct ata_device *dev, unsigned int reg)
902 struct ata_port *ap = dev->link->ap;
903 struct piix_host_priv *hpriv = ap->host->private_data;
905 iowrite32(((ap->port_no * 2 + dev->devno) << 8) | piix_sidx_map[reg],
906 hpriv->sidpr + PIIX_SIDPR_IDX);
909 static int piix_sidpr_read(struct ata_device *dev, unsigned int reg)
911 struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
913 piix_sidpr_sel(dev, reg);
914 return ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
917 static void piix_sidpr_write(struct ata_device *dev, unsigned int reg, u32 val)
919 struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
921 piix_sidpr_sel(dev, reg);
922 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
925 static u32 piix_merge_scr(u32 val0, u32 val1, const int * const *merge_tbl)
930 for (i = 0, mi = 0; i < 32 / 4; i++) {
931 u8 c0 = (val0 >> (i * 4)) & 0xf;
932 u8 c1 = (val1 >> (i * 4)) & 0xf;
936 /* if no merge preference, assume the first value */
942 /* if two values equal, use it */
946 /* choose the first match or the last from the merge table */
948 if (c0 == *cur || c1 == *cur)
956 val |= merged << (i * 4);
962 static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val)
964 const int * const sstatus_merge_tbl[] = {
965 /* DET */ (const int []){ 1, 3, 0, 4, 3, -1 },
966 /* SPD */ (const int []){ 2, 1, 0, -1 },
967 /* IPM */ (const int []){ 6, 2, 1, 0, -1 },
970 const int * const scontrol_merge_tbl[] = {
971 /* DET */ (const int []){ 1, 0, 4, 0, -1 },
972 /* SPD */ (const int []){ 0, 2, 1, 0, -1 },
973 /* IPM */ (const int []){ 0, 1, 2, 3, 0, -1 },
978 if (reg >= ARRAY_SIZE(piix_sidx_map))
981 if (!(ap->flags & ATA_FLAG_SLAVE_POSS)) {
982 *val = piix_sidpr_read(&ap->link.device[0], reg);
986 v0 = piix_sidpr_read(&ap->link.device[0], reg);
987 v1 = piix_sidpr_read(&ap->link.device[1], reg);
991 *val = piix_merge_scr(v0, v1, sstatus_merge_tbl);
997 *val = piix_merge_scr(v0, v1, scontrol_merge_tbl);
1004 static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val)
1006 if (reg >= ARRAY_SIZE(piix_sidx_map))
1009 piix_sidpr_write(&ap->link.device[0], reg, val);
1011 if (ap->flags & ATA_FLAG_SLAVE_POSS)
1012 piix_sidpr_write(&ap->link.device[1], reg, val);
1018 static int piix_broken_suspend(void)
1020 static const struct dmi_system_id sysids[] = {
1022 .ident = "TECRA M3",
1024 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1025 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
1029 .ident = "TECRA M3",
1031 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1032 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
1036 .ident = "TECRA M4",
1038 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1039 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
1043 .ident = "TECRA M5",
1045 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1046 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
1050 .ident = "TECRA M6",
1052 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1053 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
1057 .ident = "TECRA M7",
1059 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1060 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
1064 .ident = "TECRA A8",
1066 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1067 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
1071 .ident = "Satellite R20",
1073 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1074 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
1078 .ident = "Satellite R25",
1080 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1081 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
1085 .ident = "Satellite U200",
1087 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1088 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
1092 .ident = "Satellite U200",
1094 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1095 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
1099 .ident = "Satellite Pro U200",
1101 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1102 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
1106 .ident = "Satellite U205",
1108 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1109 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
1113 .ident = "SATELLITE U205",
1115 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1116 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
1120 .ident = "Portege M500",
1122 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1123 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
1127 { } /* terminate list */
1129 static const char *oemstrs[] = {
1134 if (dmi_check_system(sysids))
1137 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
1138 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
1144 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1146 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1147 unsigned long flags;
1150 rc = ata_host_suspend(host, mesg);
1154 /* Some braindamaged ACPI suspend implementations expect the
1155 * controller to be awake on entry; otherwise, it burns cpu
1156 * cycles and power trying to do something to the sleeping
1159 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
1160 pci_save_state(pdev);
1162 /* mark its power state as "unknown", since we don't
1163 * know if e.g. the BIOS will change its device state
1166 if (pdev->current_state == PCI_D0)
1167 pdev->current_state = PCI_UNKNOWN;
1169 /* tell resume that it's waking up from broken suspend */
1170 spin_lock_irqsave(&host->lock, flags);
1171 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1172 spin_unlock_irqrestore(&host->lock, flags);
1174 ata_pci_device_do_suspend(pdev, mesg);
1179 static int piix_pci_device_resume(struct pci_dev *pdev)
1181 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1182 unsigned long flags;
1185 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1186 spin_lock_irqsave(&host->lock, flags);
1187 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1188 spin_unlock_irqrestore(&host->lock, flags);
1190 pci_set_power_state(pdev, PCI_D0);
1191 pci_restore_state(pdev);
1193 /* PCI device wasn't disabled during suspend. Use
1194 * pci_reenable_device() to avoid affecting the enable
1197 rc = pci_reenable_device(pdev);
1199 dev_printk(KERN_ERR, &pdev->dev, "failed to enable "
1200 "device after resume (%d)\n", rc);
1202 rc = ata_pci_device_do_resume(pdev);
1205 ata_host_resume(host);
1211 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1213 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1216 #define AHCI_PCI_BAR 5
1217 #define AHCI_GLOBAL_CTL 0x04
1218 #define AHCI_ENABLE (1 << 31)
1219 static int piix_disable_ahci(struct pci_dev *pdev)
1225 /* BUG: pci_enable_device has not yet been called. This
1226 * works because this device is usually set up by BIOS.
1229 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1230 !pci_resource_len(pdev, AHCI_PCI_BAR))
1233 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1237 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1238 if (tmp & AHCI_ENABLE) {
1239 tmp &= ~AHCI_ENABLE;
1240 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1242 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1243 if (tmp & AHCI_ENABLE)
1247 pci_iounmap(pdev, mmio);
1252 * piix_check_450nx_errata - Check for problem 450NX setup
1253 * @ata_dev: the PCI device to check
1255 * Check for the present of 450NX errata #19 and errata #25. If
1256 * they are found return an error code so we can turn off DMA
1259 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
1261 struct pci_dev *pdev = NULL;
1263 int no_piix_dma = 0;
1265 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1266 /* Look for 450NX PXB. Check for problem configurations
1267 A PCI quirk checks bit 6 already */
1268 pci_read_config_word(pdev, 0x41, &cfg);
1269 /* Only on the original revision: IDE DMA can hang */
1270 if (pdev->revision == 0x00)
1272 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1273 else if (cfg & (1<<14) && pdev->revision < 5)
1277 dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
1278 if (no_piix_dma == 2)
1279 dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
1283 static void __devinit piix_init_pcs(struct ata_host *host,
1284 const struct piix_map_db *map_db)
1286 struct pci_dev *pdev = to_pci_dev(host->dev);
1289 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1291 new_pcs = pcs | map_db->port_enable;
1293 if (new_pcs != pcs) {
1294 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1295 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1300 static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
1301 struct ata_port_info *pinfo,
1302 const struct piix_map_db *map_db)
1305 int i, invalid_map = 0;
1308 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1310 map = map_db->map[map_value & map_db->mask];
1312 dev_printk(KERN_INFO, &pdev->dev, "MAP [");
1313 for (i = 0; i < 4; i++) {
1325 WARN_ON((i & 1) || map[i + 1] != IDE);
1326 pinfo[i / 2] = piix_port_info[ich_pata_100];
1332 printk(" P%d", map[i]);
1334 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1341 dev_printk(KERN_ERR, &pdev->dev,
1342 "invalid MAP value %u\n", map_value);
1347 static void __devinit piix_init_sidpr(struct ata_host *host)
1349 struct pci_dev *pdev = to_pci_dev(host->dev);
1350 struct piix_host_priv *hpriv = host->private_data;
1353 /* check for availability */
1354 for (i = 0; i < 4; i++)
1355 if (hpriv->map[i] == IDE)
1358 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1361 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1362 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1365 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1368 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1369 host->ports[0]->ops = &piix_sidpr_sata_ops;
1370 host->ports[1]->ops = &piix_sidpr_sata_ops;
1373 static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
1375 static const struct dmi_system_id sysids[] = {
1377 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1378 * isn't used to boot the system which
1379 * disables the channel.
1383 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1384 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1388 { } /* terminate list */
1392 if (!dmi_check_system(sysids))
1395 /* The datasheet says that bit 18 is NOOP but certain systems
1396 * seem to use it to disable a channel. Clear the bit on the
1399 pci_read_config_dword(pdev, PIIX_IOCFG, &iocfg);
1400 if (iocfg & (1 << 18)) {
1401 dev_printk(KERN_INFO, &pdev->dev,
1402 "applying IOCFG bit18 quirk\n");
1403 iocfg &= ~(1 << 18);
1404 pci_write_config_dword(pdev, PIIX_IOCFG, iocfg);
1409 * piix_init_one - Register PIIX ATA PCI device with kernel services
1410 * @pdev: PCI device to register
1411 * @ent: Entry in piix_pci_tbl matching with @pdev
1413 * Called from kernel PCI layer. We probe for combined mode (sigh),
1414 * and then hand over control to libata, for it to do the rest.
1417 * Inherited from PCI layer (may sleep).
1420 * Zero on success, or -ERRNO value.
1423 static int __devinit piix_init_one(struct pci_dev *pdev,
1424 const struct pci_device_id *ent)
1426 static int printed_version;
1427 struct device *dev = &pdev->dev;
1428 struct ata_port_info port_info[2];
1429 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1430 unsigned long port_flags;
1431 struct ata_host *host;
1432 struct piix_host_priv *hpriv;
1435 if (!printed_version++)
1436 dev_printk(KERN_DEBUG, &pdev->dev,
1437 "version " DRV_VERSION "\n");
1439 /* no hotplugging support (FIXME) */
1440 if (!in_module_init)
1443 port_info[0] = piix_port_info[ent->driver_data];
1444 port_info[1] = piix_port_info[ent->driver_data];
1446 port_flags = port_info[0].flags;
1448 /* enable device and prepare host */
1449 rc = pcim_enable_device(pdev);
1453 /* ICH6R may be driven by either ata_piix or ahci driver
1454 * regardless of BIOS configuration. Make sure AHCI mode is
1457 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {
1458 int rc = piix_disable_ahci(pdev);
1463 /* SATA map init can change port_info, do it before prepping host */
1464 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1468 if (port_flags & ATA_FLAG_SATA)
1469 hpriv->map = piix_init_sata_map(pdev, port_info,
1470 piix_map_db_table[ent->driver_data]);
1472 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
1475 host->private_data = hpriv;
1477 /* initialize controller */
1478 if (port_flags & ATA_FLAG_SATA) {
1479 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1480 piix_init_sidpr(host);
1483 /* apply IOCFG bit18 quirk */
1484 piix_iocfg_bit18_quirk(pdev);
1486 /* On ICH5, some BIOSen disable the interrupt using the
1487 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1488 * On ICH6, this bit has the same effect, but only when
1489 * MSI is disabled (and it is disabled, as we don't use
1490 * message-signalled interrupts currently).
1492 if (port_flags & PIIX_FLAG_CHECKINTR)
1495 if (piix_check_450nx_errata(pdev)) {
1496 /* This writes into the master table but it does not
1497 really matter for this errata as we will apply it to
1498 all the PIIX devices on the board */
1499 host->ports[0]->mwdma_mask = 0;
1500 host->ports[0]->udma_mask = 0;
1501 host->ports[1]->mwdma_mask = 0;
1502 host->ports[1]->udma_mask = 0;
1505 pci_set_master(pdev);
1506 return ata_pci_sff_activate_host(host, ata_sff_interrupt, &piix_sht);
1509 static int __init piix_init(void)
1513 DPRINTK("pci_register_driver\n");
1514 rc = pci_register_driver(&piix_pci_driver);
1524 static void __exit piix_exit(void)
1526 pci_unregister_driver(&piix_pci_driver);
1529 module_init(piix_init);
1530 module_exit(piix_exit);