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 */
103 PIIX_SCC = 0x0A, /* sub-class code register */
109 PIIX_FLAG_AHCI = (1 << 27), /* AHCI possible */
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_80C_PRI = (1 << 5) | (1 << 4),
117 PIIX_80C_SEC = (1 << 7) | (1 << 6),
119 /* constants for mapping table */
125 NA = -2, /* not avaliable */
126 RV = -3, /* reserved */
128 PIIX_AHCI_DEVICE = 6,
130 /* host->flags bits */
131 PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
134 enum piix_controller_ids {
136 piix_pata_mwdma, /* PIIX3 MWDMA only */
137 piix_pata_33, /* PIIX4 at 33Mhz */
138 ich_pata_33, /* ICH up to UDMA 33 only */
139 ich_pata_66, /* ICH up to 66 Mhz */
140 ich_pata_100, /* ICH up to UDMA 100 */
147 ich8m_apple_sata_ahci, /* locks up on second port enable */
149 piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */
154 const u16 port_enable;
158 struct piix_host_priv {
163 static int piix_init_one(struct pci_dev *pdev,
164 const struct pci_device_id *ent);
165 static void piix_pata_error_handler(struct ata_port *ap);
166 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev);
167 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev);
168 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev);
169 static int ich_pata_cable_detect(struct ata_port *ap);
170 static u8 piix_vmw_bmdma_status(struct ata_port *ap);
171 static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val);
172 static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val);
173 static void piix_sidpr_error_handler(struct ata_port *ap);
175 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
176 static int piix_pci_device_resume(struct pci_dev *pdev);
179 static unsigned int in_module_init = 1;
181 static const struct pci_device_id piix_pci_tbl[] = {
182 /* Intel PIIX3 for the 430HX etc */
183 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
185 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
186 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
187 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
188 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
190 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
192 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
194 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
195 /* Intel ICH (i810, i815, i840) UDMA 66*/
196 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
197 /* Intel ICH0 : UDMA 33*/
198 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
200 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
201 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
202 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
204 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
205 /* Intel ICH3 (E7500/1) UDMA 100 */
206 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
207 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
208 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
209 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
211 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
213 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
214 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
215 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
216 /* ICH6 (and 6) (i915) UDMA 100 */
217 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
218 /* ICH7/7-R (i945, i975) UDMA 100*/
219 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
220 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
221 /* ICH8 Mobile PATA Controller */
222 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
224 /* NOTE: The following PCI ids must be kept in sync with the
225 * list in drivers/pci/quirks.c.
229 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
231 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
232 /* 6300ESB (ICH5 variant with broken PCS present bits) */
233 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
234 /* 6300ESB pretending RAID */
235 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
236 /* 82801FB/FW (ICH6/ICH6W) */
237 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
238 /* 82801FR/FRW (ICH6R/ICH6RW) */
239 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
240 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented) */
241 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci },
242 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
243 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
244 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
245 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci },
246 /* Enterprise Southbridge 2 (631xESB/632xESB) */
247 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
248 /* SATA Controller 1 IDE (ICH8) */
249 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
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) */
253 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
254 /* Mobile SATA Controller IDE (ICH8M), Apple */
255 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata_ahci },
256 /* SATA Controller IDE (ICH9) */
257 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
258 /* SATA Controller IDE (ICH9) */
259 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
260 /* SATA Controller IDE (ICH9) */
261 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
262 /* SATA Controller IDE (ICH9M) */
263 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
264 /* SATA Controller IDE (ICH9M) */
265 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
266 /* SATA Controller IDE (ICH9M) */
267 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
268 /* SATA Controller IDE (Tolapai) */
269 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata_ahci },
270 /* SATA Controller IDE (ICH10) */
271 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
272 /* SATA Controller IDE (ICH10) */
273 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
274 /* SATA Controller IDE (ICH10) */
275 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
276 /* SATA Controller IDE (ICH10) */
277 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
279 { } /* terminate list */
282 static struct pci_driver piix_pci_driver = {
284 .id_table = piix_pci_tbl,
285 .probe = piix_init_one,
286 .remove = ata_pci_remove_one,
288 .suspend = piix_pci_device_suspend,
289 .resume = piix_pci_device_resume,
293 static struct scsi_host_template piix_sht = {
294 .module = THIS_MODULE,
296 .ioctl = ata_scsi_ioctl,
297 .queuecommand = ata_scsi_queuecmd,
298 .can_queue = ATA_DEF_QUEUE,
299 .this_id = ATA_SHT_THIS_ID,
300 .sg_tablesize = LIBATA_MAX_PRD,
301 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
302 .emulated = ATA_SHT_EMULATED,
303 .use_clustering = ATA_SHT_USE_CLUSTERING,
304 .proc_name = DRV_NAME,
305 .dma_boundary = ATA_DMA_BOUNDARY,
306 .slave_configure = ata_scsi_slave_config,
307 .slave_destroy = ata_scsi_slave_destroy,
308 .bios_param = ata_std_bios_param,
311 static const struct ata_port_operations piix_pata_ops = {
312 .set_piomode = piix_set_piomode,
313 .set_dmamode = piix_set_dmamode,
314 .mode_filter = ata_pci_default_filter,
316 .tf_load = ata_tf_load,
317 .tf_read = ata_tf_read,
318 .check_status = ata_check_status,
319 .exec_command = ata_exec_command,
320 .dev_select = ata_std_dev_select,
322 .bmdma_setup = ata_bmdma_setup,
323 .bmdma_start = ata_bmdma_start,
324 .bmdma_stop = ata_bmdma_stop,
325 .bmdma_status = ata_bmdma_status,
326 .qc_prep = ata_qc_prep,
327 .qc_issue = ata_qc_issue_prot,
328 .data_xfer = ata_data_xfer,
330 .freeze = ata_bmdma_freeze,
331 .thaw = ata_bmdma_thaw,
332 .error_handler = piix_pata_error_handler,
333 .post_internal_cmd = ata_bmdma_post_internal_cmd,
334 .cable_detect = ata_cable_40wire,
336 .irq_clear = ata_bmdma_irq_clear,
337 .irq_on = ata_irq_on,
339 .port_start = ata_sff_port_start,
342 static const struct ata_port_operations ich_pata_ops = {
343 .set_piomode = piix_set_piomode,
344 .set_dmamode = ich_set_dmamode,
345 .mode_filter = ata_pci_default_filter,
347 .tf_load = ata_tf_load,
348 .tf_read = ata_tf_read,
349 .check_status = ata_check_status,
350 .exec_command = ata_exec_command,
351 .dev_select = ata_std_dev_select,
353 .bmdma_setup = ata_bmdma_setup,
354 .bmdma_start = ata_bmdma_start,
355 .bmdma_stop = ata_bmdma_stop,
356 .bmdma_status = ata_bmdma_status,
357 .qc_prep = ata_qc_prep,
358 .qc_issue = ata_qc_issue_prot,
359 .data_xfer = ata_data_xfer,
361 .freeze = ata_bmdma_freeze,
362 .thaw = ata_bmdma_thaw,
363 .error_handler = piix_pata_error_handler,
364 .post_internal_cmd = ata_bmdma_post_internal_cmd,
365 .cable_detect = ich_pata_cable_detect,
367 .irq_clear = ata_bmdma_irq_clear,
368 .irq_on = ata_irq_on,
370 .port_start = ata_sff_port_start,
373 static const struct ata_port_operations piix_sata_ops = {
374 .tf_load = ata_tf_load,
375 .tf_read = ata_tf_read,
376 .check_status = ata_check_status,
377 .exec_command = ata_exec_command,
378 .dev_select = ata_std_dev_select,
380 .bmdma_setup = ata_bmdma_setup,
381 .bmdma_start = ata_bmdma_start,
382 .bmdma_stop = ata_bmdma_stop,
383 .bmdma_status = ata_bmdma_status,
384 .qc_prep = ata_qc_prep,
385 .qc_issue = ata_qc_issue_prot,
386 .data_xfer = ata_data_xfer,
388 .mode_filter = ata_pci_default_filter,
389 .freeze = ata_bmdma_freeze,
390 .thaw = ata_bmdma_thaw,
391 .error_handler = ata_bmdma_error_handler,
392 .post_internal_cmd = ata_bmdma_post_internal_cmd,
394 .irq_clear = ata_bmdma_irq_clear,
395 .irq_on = ata_irq_on,
397 .port_start = ata_sff_port_start,
400 static const struct ata_port_operations piix_vmw_ops = {
401 .set_piomode = piix_set_piomode,
402 .set_dmamode = piix_set_dmamode,
403 .mode_filter = ata_pci_default_filter,
405 .tf_load = ata_tf_load,
406 .tf_read = ata_tf_read,
407 .check_status = ata_check_status,
408 .exec_command = ata_exec_command,
409 .dev_select = ata_std_dev_select,
411 .bmdma_setup = ata_bmdma_setup,
412 .bmdma_start = ata_bmdma_start,
413 .bmdma_stop = ata_bmdma_stop,
414 .bmdma_status = piix_vmw_bmdma_status,
415 .qc_prep = ata_qc_prep,
416 .qc_issue = ata_qc_issue_prot,
417 .data_xfer = ata_data_xfer,
419 .freeze = ata_bmdma_freeze,
420 .thaw = ata_bmdma_thaw,
421 .error_handler = piix_pata_error_handler,
422 .post_internal_cmd = ata_bmdma_post_internal_cmd,
423 .cable_detect = ata_cable_40wire,
425 .irq_handler = ata_interrupt,
426 .irq_clear = ata_bmdma_irq_clear,
427 .irq_on = ata_irq_on,
429 .port_start = ata_sff_port_start,
432 static const struct ata_port_operations piix_sidpr_sata_ops = {
433 .tf_load = ata_tf_load,
434 .tf_read = ata_tf_read,
435 .check_status = ata_check_status,
436 .exec_command = ata_exec_command,
437 .dev_select = ata_std_dev_select,
439 .bmdma_setup = ata_bmdma_setup,
440 .bmdma_start = ata_bmdma_start,
441 .bmdma_stop = ata_bmdma_stop,
442 .bmdma_status = ata_bmdma_status,
443 .qc_prep = ata_qc_prep,
444 .qc_issue = ata_qc_issue_prot,
445 .data_xfer = ata_data_xfer,
447 .scr_read = piix_sidpr_scr_read,
448 .scr_write = piix_sidpr_scr_write,
450 .mode_filter = ata_pci_default_filter,
451 .freeze = ata_bmdma_freeze,
452 .thaw = ata_bmdma_thaw,
453 .error_handler = piix_sidpr_error_handler,
454 .post_internal_cmd = ata_bmdma_post_internal_cmd,
456 .irq_clear = ata_bmdma_irq_clear,
457 .irq_on = ata_irq_on,
459 .port_start = ata_sff_port_start,
462 static const struct piix_map_db ich5_map_db = {
466 /* PM PS SM SS MAP */
467 { P0, NA, P1, NA }, /* 000b */
468 { P1, NA, P0, NA }, /* 001b */
471 { P0, P1, IDE, IDE }, /* 100b */
472 { P1, P0, IDE, IDE }, /* 101b */
473 { IDE, IDE, P0, P1 }, /* 110b */
474 { IDE, IDE, P1, P0 }, /* 111b */
478 static const struct piix_map_db ich6_map_db = {
482 /* PM PS SM SS MAP */
483 { P0, P2, P1, P3 }, /* 00b */
484 { IDE, IDE, P1, P3 }, /* 01b */
485 { P0, P2, IDE, IDE }, /* 10b */
490 static const struct piix_map_db ich6m_map_db = {
494 /* Map 01b isn't specified in the doc but some notebooks use
495 * it anyway. MAP 01b have been spotted on both ICH6M and
499 /* PM PS SM SS MAP */
500 { P0, P2, NA, NA }, /* 00b */
501 { IDE, IDE, P1, P3 }, /* 01b */
502 { P0, P2, IDE, IDE }, /* 10b */
507 static const struct piix_map_db ich8_map_db = {
511 /* PM PS SM SS MAP */
512 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
514 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
519 static const struct piix_map_db ich8_2port_map_db = {
523 /* PM PS SM SS MAP */
524 { P0, NA, P1, NA }, /* 00b */
525 { RV, RV, RV, RV }, /* 01b */
526 { RV, RV, RV, RV }, /* 10b */
531 static const struct piix_map_db ich8m_apple_map_db = {
535 /* PM PS SM SS MAP */
536 { P0, NA, NA, NA }, /* 00b */
538 { P0, P2, IDE, IDE }, /* 10b */
543 static const struct piix_map_db tolapai_map_db = {
547 /* PM PS SM SS MAP */
548 { P0, NA, P1, NA }, /* 00b */
549 { RV, RV, RV, RV }, /* 01b */
550 { RV, RV, RV, RV }, /* 10b */
555 static const struct piix_map_db *piix_map_db_table[] = {
556 [ich5_sata] = &ich5_map_db,
557 [ich6_sata] = &ich6_map_db,
558 [ich6_sata_ahci] = &ich6_map_db,
559 [ich6m_sata_ahci] = &ich6m_map_db,
560 [ich8_sata_ahci] = &ich8_map_db,
561 [ich8_2port_sata] = &ich8_2port_map_db,
562 [ich8m_apple_sata_ahci] = &ich8m_apple_map_db,
563 [tolapai_sata_ahci] = &tolapai_map_db,
566 static struct ata_port_info piix_port_info[] = {
567 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
569 .flags = PIIX_PATA_FLAGS,
570 .pio_mask = 0x1f, /* pio0-4 */
571 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
572 .port_ops = &piix_pata_ops,
575 [piix_pata_33] = /* PIIX4 at 33MHz */
577 .flags = PIIX_PATA_FLAGS,
578 .pio_mask = 0x1f, /* pio0-4 */
579 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
580 .udma_mask = ATA_UDMA_MASK_40C,
581 .port_ops = &piix_pata_ops,
584 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
586 .flags = PIIX_PATA_FLAGS,
587 .pio_mask = 0x1f, /* pio 0-4 */
588 .mwdma_mask = 0x06, /* Check: maybe 0x07 */
589 .udma_mask = ATA_UDMA2, /* UDMA33 */
590 .port_ops = &ich_pata_ops,
593 [ich_pata_66] = /* ICH controllers up to 66MHz */
595 .flags = PIIX_PATA_FLAGS,
596 .pio_mask = 0x1f, /* pio 0-4 */
597 .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */
598 .udma_mask = ATA_UDMA4,
599 .port_ops = &ich_pata_ops,
604 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
605 .pio_mask = 0x1f, /* pio0-4 */
606 .mwdma_mask = 0x06, /* mwdma1-2 */
607 .udma_mask = ATA_UDMA5, /* udma0-5 */
608 .port_ops = &ich_pata_ops,
613 .flags = PIIX_SATA_FLAGS,
614 .pio_mask = 0x1f, /* pio0-4 */
615 .mwdma_mask = 0x07, /* mwdma0-2 */
616 .udma_mask = ATA_UDMA6,
617 .port_ops = &piix_sata_ops,
622 .flags = PIIX_SATA_FLAGS,
623 .pio_mask = 0x1f, /* pio0-4 */
624 .mwdma_mask = 0x07, /* mwdma0-2 */
625 .udma_mask = ATA_UDMA6,
626 .port_ops = &piix_sata_ops,
631 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,
632 .pio_mask = 0x1f, /* pio0-4 */
633 .mwdma_mask = 0x07, /* mwdma0-2 */
634 .udma_mask = ATA_UDMA6,
635 .port_ops = &piix_sata_ops,
640 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,
641 .pio_mask = 0x1f, /* pio0-4 */
642 .mwdma_mask = 0x07, /* mwdma0-2 */
643 .udma_mask = ATA_UDMA6,
644 .port_ops = &piix_sata_ops,
649 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI |
651 .pio_mask = 0x1f, /* pio0-4 */
652 .mwdma_mask = 0x07, /* mwdma0-2 */
653 .udma_mask = ATA_UDMA6,
654 .port_ops = &piix_sata_ops,
659 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI |
661 .pio_mask = 0x1f, /* pio0-4 */
662 .mwdma_mask = 0x07, /* mwdma0-2 */
663 .udma_mask = ATA_UDMA6,
664 .port_ops = &piix_sata_ops,
667 [tolapai_sata_ahci] =
669 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,
670 .pio_mask = 0x1f, /* pio0-4 */
671 .mwdma_mask = 0x07, /* mwdma0-2 */
672 .udma_mask = ATA_UDMA6,
673 .port_ops = &piix_sata_ops,
676 [ich8m_apple_sata_ahci] =
678 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI |
680 .pio_mask = 0x1f, /* pio0-4 */
681 .mwdma_mask = 0x07, /* mwdma0-2 */
682 .udma_mask = ATA_UDMA6,
683 .port_ops = &piix_sata_ops,
688 .flags = PIIX_PATA_FLAGS,
689 .pio_mask = 0x1f, /* pio0-4 */
690 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
691 .udma_mask = ATA_UDMA_MASK_40C,
692 .port_ops = &piix_vmw_ops,
697 static struct pci_bits piix_enable_bits[] = {
698 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
699 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
702 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
703 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
704 MODULE_LICENSE("GPL");
705 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
706 MODULE_VERSION(DRV_VERSION);
715 * List of laptops that use short cables rather than 80 wire
718 static const struct ich_laptop ich_laptop[] = {
719 /* devid, subvendor, subdev */
720 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
721 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
722 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
723 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
724 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
725 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
731 * ich_pata_cable_detect - Probe host controller cable detect info
732 * @ap: Port for which cable detect info is desired
734 * Read 80c cable indicator from ATA PCI device's PCI config
735 * register. This register is normally set by firmware (BIOS).
738 * None (inherited from caller).
741 static int ich_pata_cable_detect(struct ata_port *ap)
743 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
744 const struct ich_laptop *lap = &ich_laptop[0];
747 /* Check for specials - Acer Aspire 5602WLMi */
748 while (lap->device) {
749 if (lap->device == pdev->device &&
750 lap->subvendor == pdev->subsystem_vendor &&
751 lap->subdevice == pdev->subsystem_device)
752 return ATA_CBL_PATA40_SHORT;
757 /* check BIOS cable detect results */
758 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
759 pci_read_config_byte(pdev, PIIX_IOCFG, &tmp);
760 if ((tmp & mask) == 0)
761 return ATA_CBL_PATA40;
762 return ATA_CBL_PATA80;
766 * piix_pata_prereset - prereset for PATA host controller
768 * @deadline: deadline jiffies for the operation
771 * None (inherited from caller).
773 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
775 struct ata_port *ap = link->ap;
776 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
778 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
780 return ata_std_prereset(link, deadline);
783 static void piix_pata_error_handler(struct ata_port *ap)
785 ata_bmdma_drive_eh(ap, piix_pata_prereset, ata_std_softreset, NULL,
790 * piix_set_piomode - Initialize host controller PATA PIO timings
791 * @ap: Port whose timings we are configuring
794 * Set PIO mode for device, in host controller PCI config space.
797 * None (inherited from caller).
800 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
802 unsigned int pio = adev->pio_mode - XFER_PIO_0;
803 struct pci_dev *dev = to_pci_dev(ap->host->dev);
804 unsigned int is_slave = (adev->devno != 0);
805 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
806 unsigned int slave_port = 0x44;
813 * See Intel Document 298600-004 for the timing programing rules
814 * for ICH controllers.
817 static const /* ISP RTC */
818 u8 timings[][2] = { { 0, 0 },
825 control |= 1; /* TIME1 enable */
826 if (ata_pio_need_iordy(adev))
827 control |= 2; /* IE enable */
829 /* Intel specifies that the PPE functionality is for disk only */
830 if (adev->class == ATA_DEV_ATA)
831 control |= 4; /* PPE enable */
833 /* PIO configuration clears DTE unconditionally. It will be
834 * programmed in set_dmamode which is guaranteed to be called
835 * after set_piomode if any DMA mode is available.
837 pci_read_config_word(dev, master_port, &master_data);
839 /* clear TIME1|IE1|PPE1|DTE1 */
840 master_data &= 0xff0f;
841 /* Enable SITRE (separate slave timing register) */
842 master_data |= 0x4000;
843 /* enable PPE1, IE1 and TIME1 as needed */
844 master_data |= (control << 4);
845 pci_read_config_byte(dev, slave_port, &slave_data);
846 slave_data &= (ap->port_no ? 0x0f : 0xf0);
847 /* Load the timing nibble for this slave */
848 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
849 << (ap->port_no ? 4 : 0);
851 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
852 master_data &= 0xccf0;
853 /* Enable PPE, IE and TIME as appropriate */
854 master_data |= control;
855 /* load ISP and RCT */
857 (timings[pio][0] << 12) |
858 (timings[pio][1] << 8);
860 pci_write_config_word(dev, master_port, master_data);
862 pci_write_config_byte(dev, slave_port, slave_data);
864 /* Ensure the UDMA bit is off - it will be turned back on if
868 pci_read_config_byte(dev, 0x48, &udma_enable);
869 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
870 pci_write_config_byte(dev, 0x48, udma_enable);
875 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
876 * @ap: Port whose timings we are configuring
877 * @adev: Drive in question
878 * @udma: udma mode, 0 - 6
879 * @isich: set if the chip is an ICH device
881 * Set UDMA mode for device, in host controller PCI config space.
884 * None (inherited from caller).
887 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
889 struct pci_dev *dev = to_pci_dev(ap->host->dev);
890 u8 master_port = ap->port_no ? 0x42 : 0x40;
892 u8 speed = adev->dma_mode;
893 int devid = adev->devno + 2 * ap->port_no;
896 static const /* ISP RTC */
897 u8 timings[][2] = { { 0, 0 },
903 pci_read_config_word(dev, master_port, &master_data);
905 pci_read_config_byte(dev, 0x48, &udma_enable);
907 if (speed >= XFER_UDMA_0) {
908 unsigned int udma = adev->dma_mode - XFER_UDMA_0;
911 int u_clock, u_speed;
914 * UDMA is handled by a combination of clock switching and
915 * selection of dividers
917 * Handy rule: Odd modes are UDMATIMx 01, even are 02
918 * except UDMA0 which is 00
920 u_speed = min(2 - (udma & 1), udma);
922 u_clock = 0x1000; /* 100Mhz */
924 u_clock = 1; /* 66Mhz */
926 u_clock = 0; /* 33Mhz */
928 udma_enable |= (1 << devid);
930 /* Load the CT/RP selection */
931 pci_read_config_word(dev, 0x4A, &udma_timing);
932 udma_timing &= ~(3 << (4 * devid));
933 udma_timing |= u_speed << (4 * devid);
934 pci_write_config_word(dev, 0x4A, udma_timing);
937 /* Select a 33/66/100Mhz clock */
938 pci_read_config_word(dev, 0x54, &ideconf);
939 ideconf &= ~(0x1001 << devid);
940 ideconf |= u_clock << devid;
941 /* For ICH or later we should set bit 10 for better
942 performance (WR_PingPong_En) */
943 pci_write_config_word(dev, 0x54, ideconf);
947 * MWDMA is driven by the PIO timings. We must also enable
948 * IORDY unconditionally along with TIME1. PPE has already
949 * been set when the PIO timing was set.
951 unsigned int mwdma = adev->dma_mode - XFER_MW_DMA_0;
952 unsigned int control;
954 const unsigned int needed_pio[3] = {
955 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
957 int pio = needed_pio[mwdma] - XFER_PIO_0;
959 control = 3; /* IORDY|TIME1 */
961 /* If the drive MWDMA is faster than it can do PIO then
962 we must force PIO into PIO0 */
964 if (adev->pio_mode < needed_pio[mwdma])
965 /* Enable DMA timing only */
966 control |= 8; /* PIO cycles in PIO0 */
968 if (adev->devno) { /* Slave */
969 master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */
970 master_data |= control << 4;
971 pci_read_config_byte(dev, 0x44, &slave_data);
972 slave_data &= (ap->port_no ? 0x0f : 0xf0);
973 /* Load the matching timing */
974 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
975 pci_write_config_byte(dev, 0x44, slave_data);
976 } else { /* Master */
977 master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
978 and master timing bits */
979 master_data |= control;
981 (timings[pio][0] << 12) |
982 (timings[pio][1] << 8);
986 udma_enable &= ~(1 << devid);
987 pci_write_config_word(dev, master_port, master_data);
990 /* Don't scribble on 0x48 if the controller does not support UDMA */
992 pci_write_config_byte(dev, 0x48, udma_enable);
996 * piix_set_dmamode - Initialize host controller PATA DMA timings
997 * @ap: Port whose timings we are configuring
1000 * Set MW/UDMA mode for device, in host controller PCI config space.
1003 * None (inherited from caller).
1006 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
1008 do_pata_set_dmamode(ap, adev, 0);
1012 * ich_set_dmamode - Initialize host controller PATA DMA timings
1013 * @ap: Port whose timings we are configuring
1016 * Set MW/UDMA mode for device, in host controller PCI config space.
1019 * None (inherited from caller).
1022 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
1024 do_pata_set_dmamode(ap, adev, 1);
1028 * Serial ATA Index/Data Pair Superset Registers access
1030 * Beginning from ICH8, there's a sane way to access SCRs using index
1031 * and data register pair located at BAR5. This creates an
1032 * interesting problem of mapping two SCRs to one port.
1034 * Although they have separate SCRs, the master and slave aren't
1035 * independent enough to be treated as separate links - e.g. softreset
1036 * resets both. Also, there's no protocol defined for hard resetting
1037 * singled device sharing the virtual port (no defined way to acquire
1038 * device signature). This is worked around by merging the SCR values
1039 * into one sensible value and requesting follow-up SRST after
1042 * SCR merging is perfomed in nibbles which is the unit contents in
1043 * SCRs are organized. If two values are equal, the value is used.
1044 * When they differ, merge table which lists precedence of possible
1045 * values is consulted and the first match or the last entry when
1046 * nothing matches is used. When there's no merge table for the
1047 * specific nibble, value from the first port is used.
1049 static const int piix_sidx_map[] = {
1055 static void piix_sidpr_sel(struct ata_device *dev, unsigned int reg)
1057 struct ata_port *ap = dev->link->ap;
1058 struct piix_host_priv *hpriv = ap->host->private_data;
1060 iowrite32(((ap->port_no * 2 + dev->devno) << 8) | piix_sidx_map[reg],
1061 hpriv->sidpr + PIIX_SIDPR_IDX);
1064 static int piix_sidpr_read(struct ata_device *dev, unsigned int reg)
1066 struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
1068 piix_sidpr_sel(dev, reg);
1069 return ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
1072 static void piix_sidpr_write(struct ata_device *dev, unsigned int reg, u32 val)
1074 struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
1076 piix_sidpr_sel(dev, reg);
1077 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
1080 static u32 piix_merge_scr(u32 val0, u32 val1, const int * const *merge_tbl)
1085 for (i = 0, mi = 0; i < 32 / 4; i++) {
1086 u8 c0 = (val0 >> (i * 4)) & 0xf;
1087 u8 c1 = (val1 >> (i * 4)) & 0xf;
1091 /* if no merge preference, assume the first value */
1092 cur = merge_tbl[mi];
1097 /* if two values equal, use it */
1101 /* choose the first match or the last from the merge table */
1102 while (*cur != -1) {
1103 if (c0 == *cur || c1 == *cur)
1111 val |= merged << (i * 4);
1117 static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val)
1119 const int * const sstatus_merge_tbl[] = {
1120 /* DET */ (const int []){ 1, 3, 0, 4, 3, -1 },
1121 /* SPD */ (const int []){ 2, 1, 0, -1 },
1122 /* IPM */ (const int []){ 6, 2, 1, 0, -1 },
1125 const int * const scontrol_merge_tbl[] = {
1126 /* DET */ (const int []){ 1, 0, 4, 0, -1 },
1127 /* SPD */ (const int []){ 0, 2, 1, 0, -1 },
1128 /* IPM */ (const int []){ 0, 1, 2, 3, 0, -1 },
1133 if (reg >= ARRAY_SIZE(piix_sidx_map))
1136 if (!(ap->flags & ATA_FLAG_SLAVE_POSS)) {
1137 *val = piix_sidpr_read(&ap->link.device[0], reg);
1141 v0 = piix_sidpr_read(&ap->link.device[0], reg);
1142 v1 = piix_sidpr_read(&ap->link.device[1], reg);
1146 *val = piix_merge_scr(v0, v1, sstatus_merge_tbl);
1152 *val = piix_merge_scr(v0, v1, scontrol_merge_tbl);
1159 static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val)
1161 if (reg >= ARRAY_SIZE(piix_sidx_map))
1164 piix_sidpr_write(&ap->link.device[0], reg, val);
1166 if (ap->flags & ATA_FLAG_SLAVE_POSS)
1167 piix_sidpr_write(&ap->link.device[1], reg, val);
1172 static int piix_sidpr_hardreset(struct ata_link *link, unsigned int *class,
1173 unsigned long deadline)
1175 const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
1179 rc = sata_link_hardreset(link, timing, deadline);
1181 ata_link_printk(link, KERN_ERR,
1182 "COMRESET failed (errno=%d)\n", rc);
1186 /* TODO: phy layer with polling, timeouts, etc. */
1187 if (ata_link_offline(link)) {
1188 *class = ATA_DEV_NONE;
1195 static void piix_sidpr_error_handler(struct ata_port *ap)
1197 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1198 piix_sidpr_hardreset, ata_std_postreset);
1202 static int piix_broken_suspend(void)
1204 static const struct dmi_system_id sysids[] = {
1206 .ident = "TECRA M3",
1208 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1209 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
1213 .ident = "TECRA M3",
1215 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1216 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
1220 .ident = "TECRA M4",
1222 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1223 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
1227 .ident = "TECRA M5",
1229 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1230 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
1234 .ident = "TECRA M6",
1236 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1237 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
1241 .ident = "TECRA M7",
1243 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1244 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
1248 .ident = "TECRA A8",
1250 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1251 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
1255 .ident = "Satellite R20",
1257 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1258 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
1262 .ident = "Satellite R25",
1264 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1265 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
1269 .ident = "Satellite U200",
1271 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1272 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
1276 .ident = "Satellite U200",
1278 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1279 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
1283 .ident = "Satellite Pro U200",
1285 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1286 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
1290 .ident = "Satellite U205",
1292 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1293 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
1297 .ident = "SATELLITE U205",
1299 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1300 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
1304 .ident = "Portege M500",
1306 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1307 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
1311 { } /* terminate list */
1313 static const char *oemstrs[] = {
1318 if (dmi_check_system(sysids))
1321 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
1322 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
1328 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1330 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1331 unsigned long flags;
1334 rc = ata_host_suspend(host, mesg);
1338 /* Some braindamaged ACPI suspend implementations expect the
1339 * controller to be awake on entry; otherwise, it burns cpu
1340 * cycles and power trying to do something to the sleeping
1343 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
1344 pci_save_state(pdev);
1346 /* mark its power state as "unknown", since we don't
1347 * know if e.g. the BIOS will change its device state
1350 if (pdev->current_state == PCI_D0)
1351 pdev->current_state = PCI_UNKNOWN;
1353 /* tell resume that it's waking up from broken suspend */
1354 spin_lock_irqsave(&host->lock, flags);
1355 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1356 spin_unlock_irqrestore(&host->lock, flags);
1358 ata_pci_device_do_suspend(pdev, mesg);
1363 static int piix_pci_device_resume(struct pci_dev *pdev)
1365 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1366 unsigned long flags;
1369 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1370 spin_lock_irqsave(&host->lock, flags);
1371 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1372 spin_unlock_irqrestore(&host->lock, flags);
1374 pci_set_power_state(pdev, PCI_D0);
1375 pci_restore_state(pdev);
1377 /* PCI device wasn't disabled during suspend. Use
1378 * pci_reenable_device() to avoid affecting the enable
1381 rc = pci_reenable_device(pdev);
1383 dev_printk(KERN_ERR, &pdev->dev, "failed to enable "
1384 "device after resume (%d)\n", rc);
1386 rc = ata_pci_device_do_resume(pdev);
1389 ata_host_resume(host);
1395 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1397 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1400 #define AHCI_PCI_BAR 5
1401 #define AHCI_GLOBAL_CTL 0x04
1402 #define AHCI_ENABLE (1 << 31)
1403 static int piix_disable_ahci(struct pci_dev *pdev)
1409 /* BUG: pci_enable_device has not yet been called. This
1410 * works because this device is usually set up by BIOS.
1413 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1414 !pci_resource_len(pdev, AHCI_PCI_BAR))
1417 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1421 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1422 if (tmp & AHCI_ENABLE) {
1423 tmp &= ~AHCI_ENABLE;
1424 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1426 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1427 if (tmp & AHCI_ENABLE)
1431 pci_iounmap(pdev, mmio);
1436 * piix_check_450nx_errata - Check for problem 450NX setup
1437 * @ata_dev: the PCI device to check
1439 * Check for the present of 450NX errata #19 and errata #25. If
1440 * they are found return an error code so we can turn off DMA
1443 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
1445 struct pci_dev *pdev = NULL;
1447 int no_piix_dma = 0;
1449 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1450 /* Look for 450NX PXB. Check for problem configurations
1451 A PCI quirk checks bit 6 already */
1452 pci_read_config_word(pdev, 0x41, &cfg);
1453 /* Only on the original revision: IDE DMA can hang */
1454 if (pdev->revision == 0x00)
1456 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1457 else if (cfg & (1<<14) && pdev->revision < 5)
1461 dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
1462 if (no_piix_dma == 2)
1463 dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
1467 static void __devinit piix_init_pcs(struct ata_host *host,
1468 const struct piix_map_db *map_db)
1470 struct pci_dev *pdev = to_pci_dev(host->dev);
1473 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1475 new_pcs = pcs | map_db->port_enable;
1477 if (new_pcs != pcs) {
1478 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1479 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1484 static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
1485 struct ata_port_info *pinfo,
1486 const struct piix_map_db *map_db)
1489 int i, invalid_map = 0;
1492 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1494 map = map_db->map[map_value & map_db->mask];
1496 dev_printk(KERN_INFO, &pdev->dev, "MAP [");
1497 for (i = 0; i < 4; i++) {
1509 WARN_ON((i & 1) || map[i + 1] != IDE);
1510 pinfo[i / 2] = piix_port_info[ich_pata_100];
1516 printk(" P%d", map[i]);
1518 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1525 dev_printk(KERN_ERR, &pdev->dev,
1526 "invalid MAP value %u\n", map_value);
1531 static void __devinit piix_init_sidpr(struct ata_host *host)
1533 struct pci_dev *pdev = to_pci_dev(host->dev);
1534 struct piix_host_priv *hpriv = host->private_data;
1537 /* check for availability */
1538 for (i = 0; i < 4; i++)
1539 if (hpriv->map[i] == IDE)
1542 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1545 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1546 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1549 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1552 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1553 host->ports[0]->ops = &piix_sidpr_sata_ops;
1554 host->ports[1]->ops = &piix_sidpr_sata_ops;
1557 static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
1559 static const struct dmi_system_id sysids[] = {
1561 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1562 * isn't used to boot the system which
1563 * disables the channel.
1567 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1568 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1572 { } /* terminate list */
1576 if (!dmi_check_system(sysids))
1579 /* The datasheet says that bit 18 is NOOP but certain systems
1580 * seem to use it to disable a channel. Clear the bit on the
1583 pci_read_config_dword(pdev, PIIX_IOCFG, &iocfg);
1584 if (iocfg & (1 << 18)) {
1585 dev_printk(KERN_INFO, &pdev->dev,
1586 "applying IOCFG bit18 quirk\n");
1587 iocfg &= ~(1 << 18);
1588 pci_write_config_dword(pdev, PIIX_IOCFG, iocfg);
1593 * piix_init_one - Register PIIX ATA PCI device with kernel services
1594 * @pdev: PCI device to register
1595 * @ent: Entry in piix_pci_tbl matching with @pdev
1597 * Called from kernel PCI layer. We probe for combined mode (sigh),
1598 * and then hand over control to libata, for it to do the rest.
1601 * Inherited from PCI layer (may sleep).
1604 * Zero on success, or -ERRNO value.
1607 static int __devinit piix_init_one(struct pci_dev *pdev,
1608 const struct pci_device_id *ent)
1610 static int printed_version;
1611 struct device *dev = &pdev->dev;
1612 struct ata_port_info port_info[2];
1613 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1614 unsigned long port_flags;
1615 struct ata_host *host;
1616 struct piix_host_priv *hpriv;
1619 if (!printed_version++)
1620 dev_printk(KERN_DEBUG, &pdev->dev,
1621 "version " DRV_VERSION "\n");
1623 /* no hotplugging support (FIXME) */
1624 if (!in_module_init)
1627 port_info[0] = piix_port_info[ent->driver_data];
1628 port_info[1] = piix_port_info[ent->driver_data];
1630 port_flags = port_info[0].flags;
1632 /* enable device and prepare host */
1633 rc = pcim_enable_device(pdev);
1637 /* SATA map init can change port_info, do it before prepping host */
1638 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1642 if (port_flags & ATA_FLAG_SATA)
1643 hpriv->map = piix_init_sata_map(pdev, port_info,
1644 piix_map_db_table[ent->driver_data]);
1646 rc = ata_pci_prepare_sff_host(pdev, ppi, &host);
1649 host->private_data = hpriv;
1651 /* initialize controller */
1652 if (port_flags & PIIX_FLAG_AHCI) {
1654 pci_read_config_byte(pdev, PIIX_SCC, &tmp);
1655 if (tmp == PIIX_AHCI_DEVICE) {
1656 rc = piix_disable_ahci(pdev);
1662 if (port_flags & ATA_FLAG_SATA) {
1663 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1664 piix_init_sidpr(host);
1667 /* apply IOCFG bit18 quirk */
1668 piix_iocfg_bit18_quirk(pdev);
1670 /* On ICH5, some BIOSen disable the interrupt using the
1671 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1672 * On ICH6, this bit has the same effect, but only when
1673 * MSI is disabled (and it is disabled, as we don't use
1674 * message-signalled interrupts currently).
1676 if (port_flags & PIIX_FLAG_CHECKINTR)
1679 if (piix_check_450nx_errata(pdev)) {
1680 /* This writes into the master table but it does not
1681 really matter for this errata as we will apply it to
1682 all the PIIX devices on the board */
1683 host->ports[0]->mwdma_mask = 0;
1684 host->ports[0]->udma_mask = 0;
1685 host->ports[1]->mwdma_mask = 0;
1686 host->ports[1]->udma_mask = 0;
1689 pci_set_master(pdev);
1690 return ata_pci_activate_sff_host(host, ata_interrupt, &piix_sht);
1693 static int __init piix_init(void)
1697 DPRINTK("pci_register_driver\n");
1698 rc = pci_register_driver(&piix_pci_driver);
1708 static void __exit piix_exit(void)
1710 pci_unregister_driver(&piix_pci_driver);
1713 module_init(piix_init);
1714 module_exit(piix_exit);