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
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 * 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.
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.
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
75 * ICH7 errata #16 - MWDMA1 timings are incorrect
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
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>
98 #define DRV_NAME "ata_piix"
99 #define DRV_VERSION "2.13"
102 PIIX_IOCFG = 0x54, /* IDE I/O configuration register */
103 ICH5_PMR = 0x90, /* port mapping register */
104 ICH5_PCS = 0x92, /* port control and status */
110 PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
111 PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */
113 PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS,
114 PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
116 PIIX_FLAG_PIO16 = (1 << 30), /*support 16bit PIO only*/
118 PIIX_80C_PRI = (1 << 5) | (1 << 4),
119 PIIX_80C_SEC = (1 << 7) | (1 << 6),
121 /* constants for mapping table */
127 NA = -2, /* not available */
128 RV = -3, /* reserved */
130 PIIX_AHCI_DEVICE = 6,
132 /* host->flags bits */
133 PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
136 enum piix_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*/
149 ich8m_apple_sata, /* locks up on second port enable */
151 piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */
157 const u16 port_enable;
161 struct piix_host_priv {
167 static int piix_init_one(struct pci_dev *pdev,
168 const struct pci_device_id *ent);
169 static void piix_remove_one(struct pci_dev *pdev);
170 static unsigned int piix_pata_read_id(struct ata_device *adev, struct ata_taskfile *tf, u16 *id);
171 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline);
172 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev);
173 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev);
174 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev);
175 static int ich_pata_cable_detect(struct ata_port *ap);
176 static u8 piix_vmw_bmdma_status(struct ata_port *ap);
177 static int piix_sidpr_scr_read(struct ata_link *link,
178 unsigned int reg, u32 *val);
179 static int piix_sidpr_scr_write(struct ata_link *link,
180 unsigned int reg, u32 val);
181 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
183 static bool piix_irq_check(struct ata_port *ap);
184 static int piix_port_start(struct ata_port *ap);
186 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
187 static int piix_pci_device_resume(struct pci_dev *pdev);
190 static unsigned int in_module_init = 1;
192 static const struct pci_device_id piix_pci_tbl[] = {
193 /* Intel PIIX3 for the 430HX etc */
194 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
196 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
197 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
198 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
199 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
201 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
203 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
205 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
206 /* Intel ICH (i810, i815, i840) UDMA 66*/
207 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
208 /* Intel ICH0 : UDMA 33*/
209 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
211 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
212 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
213 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
215 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
216 /* Intel ICH3 (E7500/1) UDMA 100 */
217 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
219 { 0x8086, 0x24C1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
220 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
221 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
222 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
224 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
226 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
227 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
228 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
229 /* ICH6 (and 6) (i915) UDMA 100 */
230 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
231 /* ICH7/7-R (i945, i975) UDMA 100*/
232 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
233 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
234 /* ICH8 Mobile PATA Controller */
235 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
240 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
242 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
243 /* 6300ESB (ICH5 variant with broken PCS present bits) */
244 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
245 /* 6300ESB pretending RAID */
246 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
247 /* 82801FB/FW (ICH6/ICH6W) */
248 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
249 /* 82801FR/FRW (ICH6R/ICH6RW) */
250 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
251 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
252 * Attach iff the controller is in IDE mode. */
253 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID,
254 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata },
255 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
256 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
257 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
258 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata },
259 /* Enterprise Southbridge 2 (631xESB/632xESB) */
260 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
261 /* SATA Controller 1 IDE (ICH8) */
262 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
263 /* SATA Controller 2 IDE (ICH8) */
264 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
265 /* Mobile SATA Controller IDE (ICH8M), Apple */
266 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
267 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata },
268 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata },
269 /* Mobile SATA Controller IDE (ICH8M) */
270 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
271 /* SATA Controller IDE (ICH9) */
272 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
273 /* SATA Controller IDE (ICH9) */
274 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
275 /* SATA Controller IDE (ICH9) */
276 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
277 /* SATA Controller IDE (ICH9M) */
278 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
279 /* SATA Controller IDE (ICH9M) */
280 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
281 /* SATA Controller IDE (ICH9M) */
282 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
283 /* SATA Controller IDE (Tolapai) */
284 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata },
285 /* SATA Controller IDE (ICH10) */
286 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
287 /* SATA Controller IDE (ICH10) */
288 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
289 /* SATA Controller IDE (ICH10) */
290 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
291 /* SATA Controller IDE (ICH10) */
292 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
293 /* SATA Controller IDE (PCH) */
294 { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
295 /* SATA Controller IDE (PCH) */
296 { 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
297 /* SATA Controller IDE (PCH) */
298 { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
299 /* SATA Controller IDE (PCH) */
300 { 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
301 /* SATA Controller IDE (PCH) */
302 { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
303 /* SATA Controller IDE (PCH) */
304 { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
305 /* SATA Controller IDE (CPT) */
306 { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
307 /* SATA Controller IDE (CPT) */
308 { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
309 /* SATA Controller IDE (CPT) */
310 { 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
311 /* SATA Controller IDE (CPT) */
312 { 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
313 /* SATA Controller IDE (PBG) */
314 { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
315 /* SATA Controller IDE (PBG) */
316 { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
317 /* SATA Controller IDE (Panther Point) */
318 { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
319 /* SATA Controller IDE (Panther Point) */
320 { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
321 /* SATA Controller IDE (Panther Point) */
322 { 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
323 /* SATA Controller IDE (Panther Point) */
324 { 0x8086, 0x1e09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
325 /* SATA Controller IDE (Lynx Point) */
326 { 0x8086, 0x8c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
327 /* SATA Controller IDE (Lynx Point) */
328 { 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
329 /* SATA Controller IDE (Lynx Point) */
330 { 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
331 /* SATA Controller IDE (Lynx Point) */
332 { 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
333 /* SATA Controller IDE (DH89xxCC) */
334 { 0x8086, 0x2326, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
335 { } /* terminate list */
338 static struct pci_driver piix_pci_driver = {
340 .id_table = piix_pci_tbl,
341 .probe = piix_init_one,
342 .remove = piix_remove_one,
344 .suspend = piix_pci_device_suspend,
345 .resume = piix_pci_device_resume,
349 static struct scsi_host_template piix_sht = {
350 ATA_BMDMA_SHT(DRV_NAME),
353 static struct ata_port_operations piix_sata_ops = {
354 .inherits = &ata_bmdma32_port_ops,
355 .sff_irq_check = piix_irq_check,
356 .port_start = piix_port_start,
359 static struct ata_port_operations piix_pata_ops = {
360 .inherits = &piix_sata_ops,
361 .cable_detect = ata_cable_40wire,
362 .set_piomode = piix_set_piomode,
363 .set_dmamode = piix_set_dmamode,
364 .prereset = piix_pata_prereset,
365 .read_id = piix_pata_read_id,
368 static struct ata_port_operations piix_vmw_ops = {
369 .inherits = &piix_pata_ops,
370 .bmdma_status = piix_vmw_bmdma_status,
373 static struct ata_port_operations ich_pata_ops = {
374 .inherits = &piix_pata_ops,
375 .cable_detect = ich_pata_cable_detect,
376 .set_dmamode = ich_set_dmamode,
379 static struct device_attribute *piix_sidpr_shost_attrs[] = {
380 &dev_attr_link_power_management_policy,
384 static struct scsi_host_template piix_sidpr_sht = {
385 ATA_BMDMA_SHT(DRV_NAME),
386 .shost_attrs = piix_sidpr_shost_attrs,
389 static struct ata_port_operations piix_sidpr_sata_ops = {
390 .inherits = &piix_sata_ops,
391 .hardreset = sata_std_hardreset,
392 .scr_read = piix_sidpr_scr_read,
393 .scr_write = piix_sidpr_scr_write,
394 .set_lpm = piix_sidpr_set_lpm,
397 static const struct piix_map_db ich5_map_db = {
401 /* PM PS SM SS MAP */
402 { P0, NA, P1, NA }, /* 000b */
403 { P1, NA, P0, NA }, /* 001b */
406 { P0, P1, IDE, IDE }, /* 100b */
407 { P1, P0, IDE, IDE }, /* 101b */
408 { IDE, IDE, P0, P1 }, /* 110b */
409 { IDE, IDE, P1, P0 }, /* 111b */
413 static const struct piix_map_db ich6_map_db = {
417 /* PM PS SM SS MAP */
418 { P0, P2, P1, P3 }, /* 00b */
419 { IDE, IDE, P1, P3 }, /* 01b */
420 { P0, P2, IDE, IDE }, /* 10b */
425 static const struct piix_map_db ich6m_map_db = {
429 /* Map 01b isn't specified in the doc but some notebooks use
430 * it anyway. MAP 01b have been spotted on both ICH6M and
434 /* PM PS SM SS MAP */
435 { P0, P2, NA, NA }, /* 00b */
436 { IDE, IDE, P1, P3 }, /* 01b */
437 { P0, P2, IDE, IDE }, /* 10b */
442 static const struct piix_map_db ich8_map_db = {
446 /* PM PS SM SS MAP */
447 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
449 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
454 static const struct piix_map_db ich8_2port_map_db = {
458 /* PM PS SM SS MAP */
459 { P0, NA, P1, NA }, /* 00b */
460 { RV, RV, RV, RV }, /* 01b */
461 { RV, RV, RV, RV }, /* 10b */
466 static const struct piix_map_db ich8m_apple_map_db = {
470 /* PM PS SM SS MAP */
471 { P0, NA, NA, NA }, /* 00b */
473 { P0, P2, IDE, IDE }, /* 10b */
478 static const struct piix_map_db tolapai_map_db = {
482 /* PM PS SM SS MAP */
483 { P0, NA, P1, NA }, /* 00b */
484 { RV, RV, RV, RV }, /* 01b */
485 { RV, RV, RV, RV }, /* 10b */
490 static const struct piix_map_db *piix_map_db_table[] = {
491 [ich5_sata] = &ich5_map_db,
492 [ich6_sata] = &ich6_map_db,
493 [ich6m_sata] = &ich6m_map_db,
494 [ich8_sata] = &ich8_map_db,
495 [ich8_2port_sata] = &ich8_2port_map_db,
496 [ich8m_apple_sata] = &ich8m_apple_map_db,
497 [tolapai_sata] = &tolapai_map_db,
498 [ich8_sata_snb] = &ich8_map_db,
501 static struct ata_port_info piix_port_info[] = {
502 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
504 .flags = PIIX_PATA_FLAGS,
505 .pio_mask = ATA_PIO4,
506 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
507 .port_ops = &piix_pata_ops,
510 [piix_pata_33] = /* PIIX4 at 33MHz */
512 .flags = PIIX_PATA_FLAGS,
513 .pio_mask = ATA_PIO4,
514 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
515 .udma_mask = ATA_UDMA2,
516 .port_ops = &piix_pata_ops,
519 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
521 .flags = PIIX_PATA_FLAGS,
522 .pio_mask = ATA_PIO4,
523 .mwdma_mask = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok */
524 .udma_mask = ATA_UDMA2,
525 .port_ops = &ich_pata_ops,
528 [ich_pata_66] = /* ICH controllers up to 66MHz */
530 .flags = PIIX_PATA_FLAGS,
531 .pio_mask = ATA_PIO4,
532 .mwdma_mask = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */
533 .udma_mask = ATA_UDMA4,
534 .port_ops = &ich_pata_ops,
539 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
540 .pio_mask = ATA_PIO4,
541 .mwdma_mask = ATA_MWDMA12_ONLY,
542 .udma_mask = ATA_UDMA5,
543 .port_ops = &ich_pata_ops,
546 [ich_pata_100_nomwdma1] =
548 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
549 .pio_mask = ATA_PIO4,
550 .mwdma_mask = ATA_MWDMA2_ONLY,
551 .udma_mask = ATA_UDMA5,
552 .port_ops = &ich_pata_ops,
557 .flags = PIIX_SATA_FLAGS,
558 .pio_mask = ATA_PIO4,
559 .mwdma_mask = ATA_MWDMA2,
560 .udma_mask = ATA_UDMA6,
561 .port_ops = &piix_sata_ops,
566 .flags = PIIX_SATA_FLAGS,
567 .pio_mask = ATA_PIO4,
568 .mwdma_mask = ATA_MWDMA2,
569 .udma_mask = ATA_UDMA6,
570 .port_ops = &piix_sata_ops,
575 .flags = PIIX_SATA_FLAGS,
576 .pio_mask = ATA_PIO4,
577 .mwdma_mask = ATA_MWDMA2,
578 .udma_mask = ATA_UDMA6,
579 .port_ops = &piix_sata_ops,
584 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
585 .pio_mask = ATA_PIO4,
586 .mwdma_mask = ATA_MWDMA2,
587 .udma_mask = ATA_UDMA6,
588 .port_ops = &piix_sata_ops,
593 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
594 .pio_mask = ATA_PIO4,
595 .mwdma_mask = ATA_MWDMA2,
596 .udma_mask = ATA_UDMA6,
597 .port_ops = &piix_sata_ops,
602 .flags = PIIX_SATA_FLAGS,
603 .pio_mask = ATA_PIO4,
604 .mwdma_mask = ATA_MWDMA2,
605 .udma_mask = ATA_UDMA6,
606 .port_ops = &piix_sata_ops,
611 .flags = PIIX_SATA_FLAGS,
612 .pio_mask = ATA_PIO4,
613 .mwdma_mask = ATA_MWDMA2,
614 .udma_mask = ATA_UDMA6,
615 .port_ops = &piix_sata_ops,
620 .flags = PIIX_PATA_FLAGS,
621 .pio_mask = ATA_PIO4,
622 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
623 .udma_mask = ATA_UDMA2,
624 .port_ops = &piix_vmw_ops,
628 * some Sandybridge chipsets have broken 32 mode up to now,
629 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592
633 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
634 .pio_mask = ATA_PIO4,
635 .mwdma_mask = ATA_MWDMA2,
636 .udma_mask = ATA_UDMA6,
637 .port_ops = &piix_sata_ops,
642 static struct pci_bits piix_enable_bits[] = {
643 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
644 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
647 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
648 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
649 MODULE_LICENSE("GPL");
650 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
651 MODULE_VERSION(DRV_VERSION);
653 static int piix_msft_hyperv(void)
656 #if defined(CONFIG_HYPERV_STORAGE) || defined(CONFIG_HYPERV_STORAGE_MODULE)
657 static const struct dmi_system_id hv_dmi_ident[] = {
661 DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
662 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
663 DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
666 { } /* terminate list */
668 hv = !!dmi_check_system(hv_dmi_ident);
680 * List of laptops that use short cables rather than 80 wire
683 static const struct ich_laptop ich_laptop[] = {
684 /* devid, subvendor, subdev */
685 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
686 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
687 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
688 { 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */
689 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
690 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
691 { 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */
692 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
693 { 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */
694 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
695 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
696 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
697 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
698 { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */
703 static int piix_port_start(struct ata_port *ap)
705 if (!(ap->flags & PIIX_FLAG_PIO16))
706 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
708 return ata_bmdma_port_start(ap);
712 * ich_pata_cable_detect - Probe host controller cable detect info
713 * @ap: Port for which cable detect info is desired
715 * Read 80c cable indicator from ATA PCI device's PCI config
716 * register. This register is normally set by firmware (BIOS).
719 * None (inherited from caller).
722 static int ich_pata_cable_detect(struct ata_port *ap)
724 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
725 struct piix_host_priv *hpriv = ap->host->private_data;
726 const struct ich_laptop *lap = &ich_laptop[0];
729 /* Check for specials - Acer Aspire 5602WLMi */
730 while (lap->device) {
731 if (lap->device == pdev->device &&
732 lap->subvendor == pdev->subsystem_vendor &&
733 lap->subdevice == pdev->subsystem_device)
734 return ATA_CBL_PATA40_SHORT;
739 /* check BIOS cable detect results */
740 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
741 if ((hpriv->saved_iocfg & mask) == 0)
742 return ATA_CBL_PATA40;
743 return ATA_CBL_PATA80;
747 * piix_pata_prereset - prereset for PATA host controller
749 * @deadline: deadline jiffies for the operation
752 * None (inherited from caller).
754 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
756 struct ata_port *ap = link->ap;
757 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
759 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
761 return ata_sff_prereset(link, deadline);
764 static unsigned int piix_pata_read_id(struct ata_device *adev, struct ata_taskfile *tf, u16 *id)
766 unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
768 * Ignore disks in a hyper-v guest.
769 * There is no unplug protocol like it is done with xen_emul_unplug= option.
770 * Emulate the unplug by ignoring disks when the hv_storvsc driver is enabled.
771 * If the disks are not ignored, they will appear twice: once through
772 * piix and once through hv_storvsc.
773 * hv_storvsc can not handle ATAPI devices because they can only be
774 * accessed through the emulated code path (not through the vm_bus
775 * channel), the piix driver is still required.
777 if (ata_id_is_ata(id) && piix_msft_hyperv()) {
778 ata_dev_printk(adev, KERN_WARNING, "ATA device ignored in Hyper-V guest\n");
779 id[ATA_ID_CONFIG] |= (1 << 15);
784 static DEFINE_SPINLOCK(piix_lock);
786 static void piix_set_timings(struct ata_port *ap, struct ata_device *adev,
789 struct pci_dev *dev = to_pci_dev(ap->host->dev);
791 unsigned int is_slave = (adev->devno != 0);
792 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
793 unsigned int slave_port = 0x44;
800 * See Intel Document 298600-004 for the timing programing rules
801 * for ICH controllers.
804 static const /* ISP RTC */
805 u8 timings[][2] = { { 0, 0 },
812 control |= 1; /* TIME1 enable */
813 if (ata_pio_need_iordy(adev))
814 control |= 2; /* IE enable */
815 /* Intel specifies that the PPE functionality is for disk only */
816 if (adev->class == ATA_DEV_ATA)
817 control |= 4; /* PPE enable */
819 * If the drive MWDMA is faster than it can do PIO then
820 * we must force PIO into PIO0
822 if (adev->pio_mode < XFER_PIO_0 + pio)
823 /* Enable DMA timing only */
824 control |= 8; /* PIO cycles in PIO0 */
826 spin_lock_irqsave(&piix_lock, flags);
828 /* PIO configuration clears DTE unconditionally. It will be
829 * programmed in set_dmamode which is guaranteed to be called
830 * after set_piomode if any DMA mode is available.
832 pci_read_config_word(dev, master_port, &master_data);
834 /* clear TIME1|IE1|PPE1|DTE1 */
835 master_data &= 0xff0f;
836 /* enable PPE1, IE1 and TIME1 as needed */
837 master_data |= (control << 4);
838 pci_read_config_byte(dev, slave_port, &slave_data);
839 slave_data &= (ap->port_no ? 0x0f : 0xf0);
840 /* Load the timing nibble for this slave */
841 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
842 << (ap->port_no ? 4 : 0);
844 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
845 master_data &= 0xccf0;
846 /* Enable PPE, IE and TIME as appropriate */
847 master_data |= control;
848 /* load ISP and RCT */
850 (timings[pio][0] << 12) |
851 (timings[pio][1] << 8);
854 /* Enable SITRE (separate slave timing register) */
855 master_data |= 0x4000;
856 pci_write_config_word(dev, master_port, master_data);
858 pci_write_config_byte(dev, slave_port, slave_data);
860 /* Ensure the UDMA bit is off - it will be turned back on if
864 pci_read_config_byte(dev, 0x48, &udma_enable);
865 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
866 pci_write_config_byte(dev, 0x48, udma_enable);
869 spin_unlock_irqrestore(&piix_lock, flags);
873 * piix_set_piomode - Initialize host controller PATA PIO timings
874 * @ap: Port whose timings we are configuring
875 * @adev: Drive in question
877 * Set PIO mode for device, in host controller PCI config space.
880 * None (inherited from caller).
883 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
885 piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0);
889 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
890 * @ap: Port whose timings we are configuring
891 * @adev: Drive in question
892 * @isich: set if the chip is an ICH device
894 * Set UDMA mode for device, in host controller PCI config space.
897 * None (inherited from caller).
900 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
902 struct pci_dev *dev = to_pci_dev(ap->host->dev);
904 u8 speed = adev->dma_mode;
905 int devid = adev->devno + 2 * ap->port_no;
908 if (speed >= XFER_UDMA_0) {
909 unsigned int udma = speed - XFER_UDMA_0;
912 int u_clock, u_speed;
914 spin_lock_irqsave(&piix_lock, flags);
916 pci_read_config_byte(dev, 0x48, &udma_enable);
919 * UDMA is handled by a combination of clock switching and
920 * selection of dividers
922 * Handy rule: Odd modes are UDMATIMx 01, even are 02
923 * except UDMA0 which is 00
925 u_speed = min(2 - (udma & 1), udma);
927 u_clock = 0x1000; /* 100Mhz */
929 u_clock = 1; /* 66Mhz */
931 u_clock = 0; /* 33Mhz */
933 udma_enable |= (1 << devid);
935 /* Load the CT/RP selection */
936 pci_read_config_word(dev, 0x4A, &udma_timing);
937 udma_timing &= ~(3 << (4 * devid));
938 udma_timing |= u_speed << (4 * devid);
939 pci_write_config_word(dev, 0x4A, udma_timing);
942 /* Select a 33/66/100Mhz clock */
943 pci_read_config_word(dev, 0x54, &ideconf);
944 ideconf &= ~(0x1001 << devid);
945 ideconf |= u_clock << devid;
946 /* For ICH or later we should set bit 10 for better
947 performance (WR_PingPong_En) */
948 pci_write_config_word(dev, 0x54, ideconf);
951 pci_write_config_byte(dev, 0x48, udma_enable);
953 spin_unlock_irqrestore(&piix_lock, flags);
955 /* MWDMA is driven by the PIO timings. */
956 unsigned int mwdma = speed - XFER_MW_DMA_0;
957 const unsigned int needed_pio[3] = {
958 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
960 int pio = needed_pio[mwdma] - XFER_PIO_0;
962 /* XFER_PIO_0 is never used currently */
963 piix_set_timings(ap, adev, pio);
968 * piix_set_dmamode - Initialize host controller PATA DMA timings
969 * @ap: Port whose timings we are configuring
972 * Set MW/UDMA mode for device, in host controller PCI config space.
975 * None (inherited from caller).
978 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
980 do_pata_set_dmamode(ap, adev, 0);
984 * ich_set_dmamode - Initialize host controller PATA DMA timings
985 * @ap: Port whose timings we are configuring
988 * Set MW/UDMA mode for device, in host controller PCI config space.
991 * None (inherited from caller).
994 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
996 do_pata_set_dmamode(ap, adev, 1);
1000 * Serial ATA Index/Data Pair Superset Registers access
1002 * Beginning from ICH8, there's a sane way to access SCRs using index
1003 * and data register pair located at BAR5 which means that we have
1004 * separate SCRs for master and slave. This is handled using libata
1005 * slave_link facility.
1007 static const int piix_sidx_map[] = {
1013 static void piix_sidpr_sel(struct ata_link *link, unsigned int reg)
1015 struct ata_port *ap = link->ap;
1016 struct piix_host_priv *hpriv = ap->host->private_data;
1018 iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],
1019 hpriv->sidpr + PIIX_SIDPR_IDX);
1022 static int piix_sidpr_scr_read(struct ata_link *link,
1023 unsigned int reg, u32 *val)
1025 struct piix_host_priv *hpriv = link->ap->host->private_data;
1027 if (reg >= ARRAY_SIZE(piix_sidx_map))
1030 piix_sidpr_sel(link, reg);
1031 *val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
1035 static int piix_sidpr_scr_write(struct ata_link *link,
1036 unsigned int reg, u32 val)
1038 struct piix_host_priv *hpriv = link->ap->host->private_data;
1040 if (reg >= ARRAY_SIZE(piix_sidx_map))
1043 piix_sidpr_sel(link, reg);
1044 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
1048 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
1051 return sata_link_scr_lpm(link, policy, false);
1054 static bool piix_irq_check(struct ata_port *ap)
1056 if (unlikely(!ap->ioaddr.bmdma_addr))
1059 return ap->ops->bmdma_status(ap) & ATA_DMA_INTR;
1063 static int piix_broken_suspend(void)
1065 static const struct dmi_system_id sysids[] = {
1067 .ident = "TECRA M3",
1069 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1070 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
1074 .ident = "TECRA M3",
1076 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1077 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
1081 .ident = "TECRA M4",
1083 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1084 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
1088 .ident = "TECRA M4",
1090 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1091 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"),
1095 .ident = "TECRA M5",
1097 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1098 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
1102 .ident = "TECRA M6",
1104 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1105 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
1109 .ident = "TECRA M7",
1111 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1112 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
1116 .ident = "TECRA A8",
1118 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1119 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
1123 .ident = "Satellite R20",
1125 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1126 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
1130 .ident = "Satellite R25",
1132 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1133 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
1137 .ident = "Satellite U200",
1139 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1140 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
1144 .ident = "Satellite U200",
1146 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1147 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
1151 .ident = "Satellite Pro U200",
1153 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1154 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
1158 .ident = "Satellite U205",
1160 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1161 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
1165 .ident = "SATELLITE U205",
1167 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1168 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
1172 .ident = "Satellite Pro A120",
1174 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1175 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"),
1179 .ident = "Portege M500",
1181 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1182 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
1186 .ident = "VGN-BX297XP",
1188 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
1189 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"),
1193 { } /* terminate list */
1195 static const char *oemstrs[] = {
1200 if (dmi_check_system(sysids))
1203 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
1204 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
1207 /* TECRA M4 sometimes forgets its identify and reports bogus
1208 * DMI information. As the bogus information is a bit
1209 * generic, match as many entries as possible. This manual
1210 * matching is necessary because dmi_system_id.matches is
1211 * limited to four entries.
1213 if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") &&
1214 dmi_match(DMI_PRODUCT_NAME, "000000") &&
1215 dmi_match(DMI_PRODUCT_VERSION, "000000") &&
1216 dmi_match(DMI_PRODUCT_SERIAL, "000000") &&
1217 dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") &&
1218 dmi_match(DMI_BOARD_NAME, "Portable PC") &&
1219 dmi_match(DMI_BOARD_VERSION, "Version A0"))
1225 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1227 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1228 unsigned long flags;
1231 rc = ata_host_suspend(host, mesg);
1235 /* Some braindamaged ACPI suspend implementations expect the
1236 * controller to be awake on entry; otherwise, it burns cpu
1237 * cycles and power trying to do something to the sleeping
1240 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
1241 pci_save_state(pdev);
1243 /* mark its power state as "unknown", since we don't
1244 * know if e.g. the BIOS will change its device state
1247 if (pdev->current_state == PCI_D0)
1248 pdev->current_state = PCI_UNKNOWN;
1250 /* tell resume that it's waking up from broken suspend */
1251 spin_lock_irqsave(&host->lock, flags);
1252 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1253 spin_unlock_irqrestore(&host->lock, flags);
1255 ata_pci_device_do_suspend(pdev, mesg);
1260 static int piix_pci_device_resume(struct pci_dev *pdev)
1262 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1263 unsigned long flags;
1266 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1267 spin_lock_irqsave(&host->lock, flags);
1268 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1269 spin_unlock_irqrestore(&host->lock, flags);
1271 pci_set_power_state(pdev, PCI_D0);
1272 pci_restore_state(pdev);
1274 /* PCI device wasn't disabled during suspend. Use
1275 * pci_reenable_device() to avoid affecting the enable
1278 rc = pci_reenable_device(pdev);
1281 "failed to enable device after resume (%d)\n",
1284 rc = ata_pci_device_do_resume(pdev);
1287 ata_host_resume(host);
1293 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1295 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1298 #define AHCI_PCI_BAR 5
1299 #define AHCI_GLOBAL_CTL 0x04
1300 #define AHCI_ENABLE (1 << 31)
1301 static int piix_disable_ahci(struct pci_dev *pdev)
1307 /* BUG: pci_enable_device has not yet been called. This
1308 * works because this device is usually set up by BIOS.
1311 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1312 !pci_resource_len(pdev, AHCI_PCI_BAR))
1315 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1319 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1320 if (tmp & AHCI_ENABLE) {
1321 tmp &= ~AHCI_ENABLE;
1322 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1324 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1325 if (tmp & AHCI_ENABLE)
1329 pci_iounmap(pdev, mmio);
1334 * piix_check_450nx_errata - Check for problem 450NX setup
1335 * @ata_dev: the PCI device to check
1337 * Check for the present of 450NX errata #19 and errata #25. If
1338 * they are found return an error code so we can turn off DMA
1341 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
1343 struct pci_dev *pdev = NULL;
1345 int no_piix_dma = 0;
1347 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1348 /* Look for 450NX PXB. Check for problem configurations
1349 A PCI quirk checks bit 6 already */
1350 pci_read_config_word(pdev, 0x41, &cfg);
1351 /* Only on the original revision: IDE DMA can hang */
1352 if (pdev->revision == 0x00)
1354 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1355 else if (cfg & (1<<14) && pdev->revision < 5)
1359 dev_warn(&ata_dev->dev,
1360 "450NX errata present, disabling IDE DMA%s\n",
1361 no_piix_dma == 2 ? " - a BIOS update may resolve this"
1367 static void __devinit piix_init_pcs(struct ata_host *host,
1368 const struct piix_map_db *map_db)
1370 struct pci_dev *pdev = to_pci_dev(host->dev);
1373 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1375 new_pcs = pcs | map_db->port_enable;
1377 if (new_pcs != pcs) {
1378 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1379 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1384 static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
1385 struct ata_port_info *pinfo,
1386 const struct piix_map_db *map_db)
1389 int i, invalid_map = 0;
1392 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1394 map = map_db->map[map_value & map_db->mask];
1396 dev_info(&pdev->dev, "MAP [");
1397 for (i = 0; i < 4; i++) {
1409 WARN_ON((i & 1) || map[i + 1] != IDE);
1410 pinfo[i / 2] = piix_port_info[ich_pata_100];
1412 pr_cont(" IDE IDE");
1416 pr_cont(" P%d", map[i]);
1418 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1425 dev_err(&pdev->dev, "invalid MAP value %u\n", map_value);
1430 static bool piix_no_sidpr(struct ata_host *host)
1432 struct pci_dev *pdev = to_pci_dev(host->dev);
1435 * Samsung DB-P70 only has three ATA ports exposed and
1436 * curiously the unconnected first port reports link online
1437 * while not responding to SRST protocol causing excessive
1440 * Unfortunately, the system doesn't carry enough DMI
1441 * information to identify the machine but does have subsystem
1442 * vendor and device set. As it's unclear whether the
1443 * subsystem vendor/device is used only for this specific
1444 * board, the port can't be disabled solely with the
1445 * information; however, turning off SIDPR access works around
1446 * the problem. Turn it off.
1448 * This problem is reported in bnc#441240.
1450 * https://bugzilla.novell.com/show_bug.cgi?id=441420
1452 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&
1453 pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
1454 pdev->subsystem_device == 0xb049) {
1456 "Samsung DB-P70 detected, disabling SIDPR\n");
1463 static int __devinit piix_init_sidpr(struct ata_host *host)
1465 struct pci_dev *pdev = to_pci_dev(host->dev);
1466 struct piix_host_priv *hpriv = host->private_data;
1467 struct ata_link *link0 = &host->ports[0]->link;
1471 /* check for availability */
1472 for (i = 0; i < 4; i++)
1473 if (hpriv->map[i] == IDE)
1476 /* is it blacklisted? */
1477 if (piix_no_sidpr(host))
1480 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1483 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1484 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1487 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1490 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1492 /* SCR access via SIDPR doesn't work on some configurations.
1493 * Give it a test drive by inhibiting power save modes which
1496 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1498 /* if IPM is already 3, SCR access is probably working. Don't
1499 * un-inhibit power save modes as BIOS might have inhibited
1500 * them for a reason.
1502 if ((scontrol & 0xf00) != 0x300) {
1504 piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol);
1505 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1507 if ((scontrol & 0xf00) != 0x300) {
1509 "SCR access via SIDPR is available but doesn't work\n");
1514 /* okay, SCRs available, set ops and ask libata for slave_link */
1515 for (i = 0; i < 2; i++) {
1516 struct ata_port *ap = host->ports[i];
1518 ap->ops = &piix_sidpr_sata_ops;
1520 if (ap->flags & ATA_FLAG_SLAVE_POSS) {
1521 rc = ata_slave_link_init(ap);
1530 static void piix_iocfg_bit18_quirk(struct ata_host *host)
1532 static const struct dmi_system_id sysids[] = {
1534 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1535 * isn't used to boot the system which
1536 * disables the channel.
1540 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1541 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1545 { } /* terminate list */
1547 struct pci_dev *pdev = to_pci_dev(host->dev);
1548 struct piix_host_priv *hpriv = host->private_data;
1550 if (!dmi_check_system(sysids))
1553 /* The datasheet says that bit 18 is NOOP but certain systems
1554 * seem to use it to disable a channel. Clear the bit on the
1557 if (hpriv->saved_iocfg & (1 << 18)) {
1558 dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n");
1559 pci_write_config_dword(pdev, PIIX_IOCFG,
1560 hpriv->saved_iocfg & ~(1 << 18));
1564 static bool piix_broken_system_poweroff(struct pci_dev *pdev)
1566 static const struct dmi_system_id broken_systems[] = {
1568 .ident = "HP Compaq 2510p",
1570 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1571 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"),
1573 /* PCI slot number of the controller */
1574 .driver_data = (void *)0x1FUL,
1577 .ident = "HP Compaq nc6000",
1579 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1580 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6000"),
1582 /* PCI slot number of the controller */
1583 .driver_data = (void *)0x1FUL,
1586 { } /* terminate list */
1588 const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
1591 unsigned long slot = (unsigned long)dmi->driver_data;
1592 /* apply the quirk only to on-board controllers */
1593 return slot == PCI_SLOT(pdev->devfn);
1600 * piix_init_one - Register PIIX ATA PCI device with kernel services
1601 * @pdev: PCI device to register
1602 * @ent: Entry in piix_pci_tbl matching with @pdev
1604 * Called from kernel PCI layer. We probe for combined mode (sigh),
1605 * and then hand over control to libata, for it to do the rest.
1608 * Inherited from PCI layer (may sleep).
1611 * Zero on success, or -ERRNO value.
1614 static int __devinit piix_init_one(struct pci_dev *pdev,
1615 const struct pci_device_id *ent)
1617 struct device *dev = &pdev->dev;
1618 struct ata_port_info port_info[2];
1619 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1620 struct scsi_host_template *sht = &piix_sht;
1621 unsigned long port_flags;
1622 struct ata_host *host;
1623 struct piix_host_priv *hpriv;
1626 ata_print_version_once(&pdev->dev, DRV_VERSION);
1628 /* no hotplugging support for later devices (FIXME) */
1629 if (!in_module_init && ent->driver_data >= ich5_sata)
1632 if (piix_broken_system_poweroff(pdev)) {
1633 piix_port_info[ent->driver_data].flags |=
1634 ATA_FLAG_NO_POWEROFF_SPINDOWN |
1635 ATA_FLAG_NO_HIBERNATE_SPINDOWN;
1636 dev_info(&pdev->dev, "quirky BIOS, skipping spindown "
1637 "on poweroff and hibernation\n");
1640 port_info[0] = piix_port_info[ent->driver_data];
1641 port_info[1] = piix_port_info[ent->driver_data];
1643 port_flags = port_info[0].flags;
1645 /* enable device and prepare host */
1646 rc = pcim_enable_device(pdev);
1650 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1654 /* Save IOCFG, this will be used for cable detection, quirk
1655 * detection and restoration on detach. This is necessary
1656 * because some ACPI implementations mess up cable related
1657 * bits on _STM. Reported on kernel bz#11879.
1659 pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg);
1661 /* ICH6R may be driven by either ata_piix or ahci driver
1662 * regardless of BIOS configuration. Make sure AHCI mode is
1665 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {
1666 rc = piix_disable_ahci(pdev);
1671 /* SATA map init can change port_info, do it before prepping host */
1672 if (port_flags & ATA_FLAG_SATA)
1673 hpriv->map = piix_init_sata_map(pdev, port_info,
1674 piix_map_db_table[ent->driver_data]);
1676 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
1679 host->private_data = hpriv;
1681 /* initialize controller */
1682 if (port_flags & ATA_FLAG_SATA) {
1683 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1684 rc = piix_init_sidpr(host);
1687 if (host->ports[0]->ops == &piix_sidpr_sata_ops)
1688 sht = &piix_sidpr_sht;
1691 /* apply IOCFG bit18 quirk */
1692 piix_iocfg_bit18_quirk(host);
1694 /* On ICH5, some BIOSen disable the interrupt using the
1695 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1696 * On ICH6, this bit has the same effect, but only when
1697 * MSI is disabled (and it is disabled, as we don't use
1698 * message-signalled interrupts currently).
1700 if (port_flags & PIIX_FLAG_CHECKINTR)
1703 if (piix_check_450nx_errata(pdev)) {
1704 /* This writes into the master table but it does not
1705 really matter for this errata as we will apply it to
1706 all the PIIX devices on the board */
1707 host->ports[0]->mwdma_mask = 0;
1708 host->ports[0]->udma_mask = 0;
1709 host->ports[1]->mwdma_mask = 0;
1710 host->ports[1]->udma_mask = 0;
1712 host->flags |= ATA_HOST_PARALLEL_SCAN;
1714 pci_set_master(pdev);
1715 return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht);
1718 static void piix_remove_one(struct pci_dev *pdev)
1720 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1721 struct piix_host_priv *hpriv = host->private_data;
1723 pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg);
1725 ata_pci_remove_one(pdev);
1728 static int __init piix_init(void)
1732 DPRINTK("pci_register_driver\n");
1733 rc = pci_register_driver(&piix_pci_driver);
1743 static void __exit piix_exit(void)
1745 pci_unregister_driver(&piix_pci_driver);
1748 module_init(piix_init);
1749 module_exit(piix_exit);