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 },
271 { } /* terminate list */
274 static struct pci_driver piix_pci_driver = {
276 .id_table = piix_pci_tbl,
277 .probe = piix_init_one,
278 .remove = ata_pci_remove_one,
280 .suspend = piix_pci_device_suspend,
281 .resume = piix_pci_device_resume,
285 static struct scsi_host_template piix_sht = {
286 .module = THIS_MODULE,
288 .ioctl = ata_scsi_ioctl,
289 .queuecommand = ata_scsi_queuecmd,
290 .can_queue = ATA_DEF_QUEUE,
291 .this_id = ATA_SHT_THIS_ID,
292 .sg_tablesize = LIBATA_MAX_PRD,
293 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
294 .emulated = ATA_SHT_EMULATED,
295 .use_clustering = ATA_SHT_USE_CLUSTERING,
296 .proc_name = DRV_NAME,
297 .dma_boundary = ATA_DMA_BOUNDARY,
298 .slave_configure = ata_scsi_slave_config,
299 .slave_destroy = ata_scsi_slave_destroy,
300 .bios_param = ata_std_bios_param,
303 static const struct ata_port_operations piix_pata_ops = {
304 .set_piomode = piix_set_piomode,
305 .set_dmamode = piix_set_dmamode,
306 .mode_filter = ata_pci_default_filter,
308 .tf_load = ata_tf_load,
309 .tf_read = ata_tf_read,
310 .check_status = ata_check_status,
311 .exec_command = ata_exec_command,
312 .dev_select = ata_std_dev_select,
314 .bmdma_setup = ata_bmdma_setup,
315 .bmdma_start = ata_bmdma_start,
316 .bmdma_stop = ata_bmdma_stop,
317 .bmdma_status = ata_bmdma_status,
318 .qc_prep = ata_qc_prep,
319 .qc_issue = ata_qc_issue_prot,
320 .data_xfer = ata_data_xfer,
322 .freeze = ata_bmdma_freeze,
323 .thaw = ata_bmdma_thaw,
324 .error_handler = piix_pata_error_handler,
325 .post_internal_cmd = ata_bmdma_post_internal_cmd,
326 .cable_detect = ata_cable_40wire,
328 .irq_clear = ata_bmdma_irq_clear,
329 .irq_on = ata_irq_on,
331 .port_start = ata_port_start,
334 static const struct ata_port_operations ich_pata_ops = {
335 .set_piomode = piix_set_piomode,
336 .set_dmamode = ich_set_dmamode,
337 .mode_filter = ata_pci_default_filter,
339 .tf_load = ata_tf_load,
340 .tf_read = ata_tf_read,
341 .check_status = ata_check_status,
342 .exec_command = ata_exec_command,
343 .dev_select = ata_std_dev_select,
345 .bmdma_setup = ata_bmdma_setup,
346 .bmdma_start = ata_bmdma_start,
347 .bmdma_stop = ata_bmdma_stop,
348 .bmdma_status = ata_bmdma_status,
349 .qc_prep = ata_qc_prep,
350 .qc_issue = ata_qc_issue_prot,
351 .data_xfer = ata_data_xfer,
353 .freeze = ata_bmdma_freeze,
354 .thaw = ata_bmdma_thaw,
355 .error_handler = piix_pata_error_handler,
356 .post_internal_cmd = ata_bmdma_post_internal_cmd,
357 .cable_detect = ich_pata_cable_detect,
359 .irq_clear = ata_bmdma_irq_clear,
360 .irq_on = ata_irq_on,
362 .port_start = ata_port_start,
365 static const struct ata_port_operations piix_sata_ops = {
366 .tf_load = ata_tf_load,
367 .tf_read = ata_tf_read,
368 .check_status = ata_check_status,
369 .exec_command = ata_exec_command,
370 .dev_select = ata_std_dev_select,
372 .bmdma_setup = ata_bmdma_setup,
373 .bmdma_start = ata_bmdma_start,
374 .bmdma_stop = ata_bmdma_stop,
375 .bmdma_status = ata_bmdma_status,
376 .qc_prep = ata_qc_prep,
377 .qc_issue = ata_qc_issue_prot,
378 .data_xfer = ata_data_xfer,
380 .freeze = ata_bmdma_freeze,
381 .thaw = ata_bmdma_thaw,
382 .error_handler = ata_bmdma_error_handler,
383 .post_internal_cmd = ata_bmdma_post_internal_cmd,
385 .irq_clear = ata_bmdma_irq_clear,
386 .irq_on = ata_irq_on,
388 .port_start = ata_port_start,
391 static const struct ata_port_operations piix_vmw_ops = {
392 .set_piomode = piix_set_piomode,
393 .set_dmamode = piix_set_dmamode,
394 .mode_filter = ata_pci_default_filter,
396 .tf_load = ata_tf_load,
397 .tf_read = ata_tf_read,
398 .check_status = ata_check_status,
399 .exec_command = ata_exec_command,
400 .dev_select = ata_std_dev_select,
402 .bmdma_setup = ata_bmdma_setup,
403 .bmdma_start = ata_bmdma_start,
404 .bmdma_stop = ata_bmdma_stop,
405 .bmdma_status = piix_vmw_bmdma_status,
406 .qc_prep = ata_qc_prep,
407 .qc_issue = ata_qc_issue_prot,
408 .data_xfer = ata_data_xfer,
410 .freeze = ata_bmdma_freeze,
411 .thaw = ata_bmdma_thaw,
412 .error_handler = piix_pata_error_handler,
413 .post_internal_cmd = ata_bmdma_post_internal_cmd,
414 .cable_detect = ata_cable_40wire,
416 .irq_handler = ata_interrupt,
417 .irq_clear = ata_bmdma_irq_clear,
418 .irq_on = ata_irq_on,
420 .port_start = ata_port_start,
423 static const struct ata_port_operations piix_sidpr_sata_ops = {
424 .tf_load = ata_tf_load,
425 .tf_read = ata_tf_read,
426 .check_status = ata_check_status,
427 .exec_command = ata_exec_command,
428 .dev_select = ata_std_dev_select,
430 .bmdma_setup = ata_bmdma_setup,
431 .bmdma_start = ata_bmdma_start,
432 .bmdma_stop = ata_bmdma_stop,
433 .bmdma_status = ata_bmdma_status,
434 .qc_prep = ata_qc_prep,
435 .qc_issue = ata_qc_issue_prot,
436 .data_xfer = ata_data_xfer,
438 .scr_read = piix_sidpr_scr_read,
439 .scr_write = piix_sidpr_scr_write,
441 .freeze = ata_bmdma_freeze,
442 .thaw = ata_bmdma_thaw,
443 .error_handler = piix_sidpr_error_handler,
444 .post_internal_cmd = ata_bmdma_post_internal_cmd,
446 .irq_clear = ata_bmdma_irq_clear,
447 .irq_on = ata_irq_on,
449 .port_start = ata_port_start,
452 static const struct piix_map_db ich5_map_db = {
456 /* PM PS SM SS MAP */
457 { P0, NA, P1, NA }, /* 000b */
458 { P1, NA, P0, NA }, /* 001b */
461 { P0, P1, IDE, IDE }, /* 100b */
462 { P1, P0, IDE, IDE }, /* 101b */
463 { IDE, IDE, P0, P1 }, /* 110b */
464 { IDE, IDE, P1, P0 }, /* 111b */
468 static const struct piix_map_db ich6_map_db = {
472 /* PM PS SM SS MAP */
473 { P0, P2, P1, P3 }, /* 00b */
474 { IDE, IDE, P1, P3 }, /* 01b */
475 { P0, P2, IDE, IDE }, /* 10b */
480 static const struct piix_map_db ich6m_map_db = {
484 /* Map 01b isn't specified in the doc but some notebooks use
485 * it anyway. MAP 01b have been spotted on both ICH6M and
489 /* PM PS SM SS MAP */
490 { P0, P2, NA, NA }, /* 00b */
491 { IDE, IDE, P1, P3 }, /* 01b */
492 { P0, P2, IDE, IDE }, /* 10b */
497 static const struct piix_map_db ich8_map_db = {
501 /* PM PS SM SS MAP */
502 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
504 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
509 static const struct piix_map_db ich8_2port_map_db = {
513 /* PM PS SM SS MAP */
514 { P0, NA, P1, NA }, /* 00b */
515 { RV, RV, RV, RV }, /* 01b */
516 { RV, RV, RV, RV }, /* 10b */
521 static const struct piix_map_db ich8m_apple_map_db = {
525 /* PM PS SM SS MAP */
526 { P0, NA, NA, NA }, /* 00b */
528 { P0, P2, IDE, IDE }, /* 10b */
533 static const struct piix_map_db tolapai_map_db = {
537 /* PM PS SM SS MAP */
538 { P0, NA, P1, NA }, /* 00b */
539 { RV, RV, RV, RV }, /* 01b */
540 { RV, RV, RV, RV }, /* 10b */
545 static const struct piix_map_db *piix_map_db_table[] = {
546 [ich5_sata] = &ich5_map_db,
547 [ich6_sata] = &ich6_map_db,
548 [ich6_sata_ahci] = &ich6_map_db,
549 [ich6m_sata_ahci] = &ich6m_map_db,
550 [ich8_sata_ahci] = &ich8_map_db,
551 [ich8_2port_sata] = &ich8_2port_map_db,
552 [ich8m_apple_sata_ahci] = &ich8m_apple_map_db,
553 [tolapai_sata_ahci] = &tolapai_map_db,
556 static struct ata_port_info piix_port_info[] = {
557 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
559 .flags = PIIX_PATA_FLAGS,
560 .pio_mask = 0x1f, /* pio0-4 */
561 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
562 .port_ops = &piix_pata_ops,
565 [piix_pata_33] = /* PIIX4 at 33MHz */
567 .flags = PIIX_PATA_FLAGS,
568 .pio_mask = 0x1f, /* pio0-4 */
569 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
570 .udma_mask = ATA_UDMA_MASK_40C,
571 .port_ops = &piix_pata_ops,
574 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
576 .flags = PIIX_PATA_FLAGS,
577 .pio_mask = 0x1f, /* pio 0-4 */
578 .mwdma_mask = 0x06, /* Check: maybe 0x07 */
579 .udma_mask = ATA_UDMA2, /* UDMA33 */
580 .port_ops = &ich_pata_ops,
583 [ich_pata_66] = /* ICH controllers up to 66MHz */
585 .flags = PIIX_PATA_FLAGS,
586 .pio_mask = 0x1f, /* pio 0-4 */
587 .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */
588 .udma_mask = ATA_UDMA4,
589 .port_ops = &ich_pata_ops,
594 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
595 .pio_mask = 0x1f, /* pio0-4 */
596 .mwdma_mask = 0x06, /* mwdma1-2 */
597 .udma_mask = ATA_UDMA5, /* udma0-5 */
598 .port_ops = &ich_pata_ops,
603 .flags = PIIX_SATA_FLAGS,
604 .pio_mask = 0x1f, /* pio0-4 */
605 .mwdma_mask = 0x07, /* mwdma0-2 */
606 .udma_mask = ATA_UDMA6,
607 .port_ops = &piix_sata_ops,
612 .flags = PIIX_SATA_FLAGS,
613 .pio_mask = 0x1f, /* pio0-4 */
614 .mwdma_mask = 0x07, /* mwdma0-2 */
615 .udma_mask = ATA_UDMA6,
616 .port_ops = &piix_sata_ops,
621 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,
622 .pio_mask = 0x1f, /* pio0-4 */
623 .mwdma_mask = 0x07, /* mwdma0-2 */
624 .udma_mask = ATA_UDMA6,
625 .port_ops = &piix_sata_ops,
630 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,
631 .pio_mask = 0x1f, /* pio0-4 */
632 .mwdma_mask = 0x07, /* mwdma0-2 */
633 .udma_mask = ATA_UDMA6,
634 .port_ops = &piix_sata_ops,
639 .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,
657 [tolapai_sata_ahci] =
659 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_AHCI,
660 .pio_mask = 0x1f, /* pio0-4 */
661 .mwdma_mask = 0x07, /* mwdma0-2 */
662 .udma_mask = ATA_UDMA6,
663 .port_ops = &piix_sata_ops,
666 [ich8m_apple_sata_ahci] =
668 .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,
679 .flags = PIIX_PATA_FLAGS,
680 .pio_mask = 0x1f, /* pio0-4 */
681 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
682 .udma_mask = ATA_UDMA_MASK_40C,
683 .port_ops = &piix_vmw_ops,
688 static struct pci_bits piix_enable_bits[] = {
689 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
690 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
693 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
694 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
695 MODULE_LICENSE("GPL");
696 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
697 MODULE_VERSION(DRV_VERSION);
706 * List of laptops that use short cables rather than 80 wire
709 static const struct ich_laptop ich_laptop[] = {
710 /* devid, subvendor, subdev */
711 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
712 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
713 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
714 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
715 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
716 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
722 * ich_pata_cable_detect - Probe host controller cable detect info
723 * @ap: Port for which cable detect info is desired
725 * Read 80c cable indicator from ATA PCI device's PCI config
726 * register. This register is normally set by firmware (BIOS).
729 * None (inherited from caller).
732 static int ich_pata_cable_detect(struct ata_port *ap)
734 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
735 const struct ich_laptop *lap = &ich_laptop[0];
738 /* Check for specials - Acer Aspire 5602WLMi */
739 while (lap->device) {
740 if (lap->device == pdev->device &&
741 lap->subvendor == pdev->subsystem_vendor &&
742 lap->subdevice == pdev->subsystem_device)
743 return ATA_CBL_PATA40_SHORT;
748 /* check BIOS cable detect results */
749 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
750 pci_read_config_byte(pdev, PIIX_IOCFG, &tmp);
751 if ((tmp & mask) == 0)
752 return ATA_CBL_PATA40;
753 return ATA_CBL_PATA80;
757 * piix_pata_prereset - prereset for PATA host controller
759 * @deadline: deadline jiffies for the operation
762 * None (inherited from caller).
764 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
766 struct ata_port *ap = link->ap;
767 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
769 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
771 return ata_std_prereset(link, deadline);
774 static void piix_pata_error_handler(struct ata_port *ap)
776 ata_bmdma_drive_eh(ap, piix_pata_prereset, ata_std_softreset, NULL,
781 * piix_set_piomode - Initialize host controller PATA PIO timings
782 * @ap: Port whose timings we are configuring
785 * Set PIO mode for device, in host controller PCI config space.
788 * None (inherited from caller).
791 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
793 unsigned int pio = adev->pio_mode - XFER_PIO_0;
794 struct pci_dev *dev = to_pci_dev(ap->host->dev);
795 unsigned int is_slave = (adev->devno != 0);
796 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
797 unsigned int slave_port = 0x44;
804 * See Intel Document 298600-004 for the timing programing rules
805 * for ICH controllers.
808 static const /* ISP RTC */
809 u8 timings[][2] = { { 0, 0 },
816 control |= 1; /* TIME1 enable */
817 if (ata_pio_need_iordy(adev))
818 control |= 2; /* IE enable */
820 /* Intel specifies that the PPE functionality is for disk only */
821 if (adev->class == ATA_DEV_ATA)
822 control |= 4; /* PPE enable */
824 /* PIO configuration clears DTE unconditionally. It will be
825 * programmed in set_dmamode which is guaranteed to be called
826 * after set_piomode if any DMA mode is available.
828 pci_read_config_word(dev, master_port, &master_data);
830 /* clear TIME1|IE1|PPE1|DTE1 */
831 master_data &= 0xff0f;
832 /* Enable SITRE (seperate slave timing register) */
833 master_data |= 0x4000;
834 /* enable PPE1, IE1 and TIME1 as needed */
835 master_data |= (control << 4);
836 pci_read_config_byte(dev, slave_port, &slave_data);
837 slave_data &= (ap->port_no ? 0x0f : 0xf0);
838 /* Load the timing nibble for this slave */
839 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
840 << (ap->port_no ? 4 : 0);
842 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
843 master_data &= 0xccf0;
844 /* Enable PPE, IE and TIME as appropriate */
845 master_data |= control;
846 /* load ISP and RCT */
848 (timings[pio][0] << 12) |
849 (timings[pio][1] << 8);
851 pci_write_config_word(dev, master_port, master_data);
853 pci_write_config_byte(dev, slave_port, slave_data);
855 /* Ensure the UDMA bit is off - it will be turned back on if
859 pci_read_config_byte(dev, 0x48, &udma_enable);
860 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
861 pci_write_config_byte(dev, 0x48, udma_enable);
866 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
867 * @ap: Port whose timings we are configuring
868 * @adev: Drive in question
869 * @udma: udma mode, 0 - 6
870 * @isich: set if the chip is an ICH device
872 * Set UDMA mode for device, in host controller PCI config space.
875 * None (inherited from caller).
878 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
880 struct pci_dev *dev = to_pci_dev(ap->host->dev);
881 u8 master_port = ap->port_no ? 0x42 : 0x40;
883 u8 speed = adev->dma_mode;
884 int devid = adev->devno + 2 * ap->port_no;
887 static const /* ISP RTC */
888 u8 timings[][2] = { { 0, 0 },
894 pci_read_config_word(dev, master_port, &master_data);
896 pci_read_config_byte(dev, 0x48, &udma_enable);
898 if (speed >= XFER_UDMA_0) {
899 unsigned int udma = adev->dma_mode - XFER_UDMA_0;
902 int u_clock, u_speed;
905 * UDMA is handled by a combination of clock switching and
906 * selection of dividers
908 * Handy rule: Odd modes are UDMATIMx 01, even are 02
909 * except UDMA0 which is 00
911 u_speed = min(2 - (udma & 1), udma);
913 u_clock = 0x1000; /* 100Mhz */
915 u_clock = 1; /* 66Mhz */
917 u_clock = 0; /* 33Mhz */
919 udma_enable |= (1 << devid);
921 /* Load the CT/RP selection */
922 pci_read_config_word(dev, 0x4A, &udma_timing);
923 udma_timing &= ~(3 << (4 * devid));
924 udma_timing |= u_speed << (4 * devid);
925 pci_write_config_word(dev, 0x4A, udma_timing);
928 /* Select a 33/66/100Mhz clock */
929 pci_read_config_word(dev, 0x54, &ideconf);
930 ideconf &= ~(0x1001 << devid);
931 ideconf |= u_clock << devid;
932 /* For ICH or later we should set bit 10 for better
933 performance (WR_PingPong_En) */
934 pci_write_config_word(dev, 0x54, ideconf);
938 * MWDMA is driven by the PIO timings. We must also enable
939 * IORDY unconditionally along with TIME1. PPE has already
940 * been set when the PIO timing was set.
942 unsigned int mwdma = adev->dma_mode - XFER_MW_DMA_0;
943 unsigned int control;
945 const unsigned int needed_pio[3] = {
946 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
948 int pio = needed_pio[mwdma] - XFER_PIO_0;
950 control = 3; /* IORDY|TIME1 */
952 /* If the drive MWDMA is faster than it can do PIO then
953 we must force PIO into PIO0 */
955 if (adev->pio_mode < needed_pio[mwdma])
956 /* Enable DMA timing only */
957 control |= 8; /* PIO cycles in PIO0 */
959 if (adev->devno) { /* Slave */
960 master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */
961 master_data |= control << 4;
962 pci_read_config_byte(dev, 0x44, &slave_data);
963 slave_data &= (ap->port_no ? 0x0f : 0xf0);
964 /* Load the matching timing */
965 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
966 pci_write_config_byte(dev, 0x44, slave_data);
967 } else { /* Master */
968 master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
969 and master timing bits */
970 master_data |= control;
972 (timings[pio][0] << 12) |
973 (timings[pio][1] << 8);
977 udma_enable &= ~(1 << devid);
978 pci_write_config_word(dev, master_port, master_data);
981 /* Don't scribble on 0x48 if the controller does not support UDMA */
983 pci_write_config_byte(dev, 0x48, udma_enable);
987 * piix_set_dmamode - Initialize host controller PATA DMA timings
988 * @ap: Port whose timings we are configuring
991 * Set MW/UDMA mode for device, in host controller PCI config space.
994 * None (inherited from caller).
997 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
999 do_pata_set_dmamode(ap, adev, 0);
1003 * ich_set_dmamode - Initialize host controller PATA DMA timings
1004 * @ap: Port whose timings we are configuring
1007 * Set MW/UDMA mode for device, in host controller PCI config space.
1010 * None (inherited from caller).
1013 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
1015 do_pata_set_dmamode(ap, adev, 1);
1019 * Serial ATA Index/Data Pair Superset Registers access
1021 * Beginning from ICH8, there's a sane way to access SCRs using index
1022 * and data register pair located at BAR5. This creates an
1023 * interesting problem of mapping two SCRs to one port.
1025 * Although they have separate SCRs, the master and slave aren't
1026 * independent enough to be treated as separate links - e.g. softreset
1027 * resets both. Also, there's no protocol defined for hard resetting
1028 * singled device sharing the virtual port (no defined way to acquire
1029 * device signature). This is worked around by merging the SCR values
1030 * into one sensible value and requesting follow-up SRST after
1033 * SCR merging is perfomed in nibbles which is the unit contents in
1034 * SCRs are organized. If two values are equal, the value is used.
1035 * When they differ, merge table which lists precedence of possible
1036 * values is consulted and the first match or the last entry when
1037 * nothing matches is used. When there's no merge table for the
1038 * specific nibble, value from the first port is used.
1040 static const int piix_sidx_map[] = {
1046 static void piix_sidpr_sel(struct ata_device *dev, unsigned int reg)
1048 struct ata_port *ap = dev->link->ap;
1049 struct piix_host_priv *hpriv = ap->host->private_data;
1051 iowrite32(((ap->port_no * 2 + dev->devno) << 8) | piix_sidx_map[reg],
1052 hpriv->sidpr + PIIX_SIDPR_IDX);
1055 static int piix_sidpr_read(struct ata_device *dev, unsigned int reg)
1057 struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
1059 piix_sidpr_sel(dev, reg);
1060 return ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
1063 static void piix_sidpr_write(struct ata_device *dev, unsigned int reg, u32 val)
1065 struct piix_host_priv *hpriv = dev->link->ap->host->private_data;
1067 piix_sidpr_sel(dev, reg);
1068 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
1071 u32 piix_merge_scr(u32 val0, u32 val1, const int * const *merge_tbl)
1076 for (i = 0, mi = 0; i < 32 / 4; i++) {
1077 u8 c0 = (val0 >> (i * 4)) & 0xf;
1078 u8 c1 = (val1 >> (i * 4)) & 0xf;
1082 /* if no merge preference, assume the first value */
1083 cur = merge_tbl[mi];
1088 /* if two values equal, use it */
1092 /* choose the first match or the last from the merge table */
1093 while (*cur != -1) {
1094 if (c0 == *cur || c1 == *cur)
1102 val |= merged << (i * 4);
1108 static int piix_sidpr_scr_read(struct ata_port *ap, unsigned int reg, u32 *val)
1110 const int * const sstatus_merge_tbl[] = {
1111 /* DET */ (const int []){ 1, 3, 0, 4, 3, -1 },
1112 /* SPD */ (const int []){ 2, 1, 0, -1 },
1113 /* IPM */ (const int []){ 6, 2, 1, 0, -1 },
1116 const int * const scontrol_merge_tbl[] = {
1117 /* DET */ (const int []){ 1, 0, 4, 0, -1 },
1118 /* SPD */ (const int []){ 0, 2, 1, 0, -1 },
1119 /* IPM */ (const int []){ 0, 1, 2, 3, 0, -1 },
1124 if (reg >= ARRAY_SIZE(piix_sidx_map))
1127 if (!(ap->flags & ATA_FLAG_SLAVE_POSS)) {
1128 *val = piix_sidpr_read(&ap->link.device[0], reg);
1132 v0 = piix_sidpr_read(&ap->link.device[0], reg);
1133 v1 = piix_sidpr_read(&ap->link.device[1], reg);
1137 *val = piix_merge_scr(v0, v1, sstatus_merge_tbl);
1143 *val = piix_merge_scr(v0, v1, scontrol_merge_tbl);
1150 static int piix_sidpr_scr_write(struct ata_port *ap, unsigned int reg, u32 val)
1152 if (reg >= ARRAY_SIZE(piix_sidx_map))
1155 piix_sidpr_write(&ap->link.device[0], reg, val);
1157 if (ap->flags & ATA_FLAG_SLAVE_POSS)
1158 piix_sidpr_write(&ap->link.device[1], reg, val);
1163 static int piix_sidpr_hardreset(struct ata_link *link, unsigned int *class,
1164 unsigned long deadline)
1166 const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context);
1170 rc = sata_link_hardreset(link, timing, deadline);
1172 ata_link_printk(link, KERN_ERR,
1173 "COMRESET failed (errno=%d)\n", rc);
1177 /* TODO: phy layer with polling, timeouts, etc. */
1178 if (ata_link_offline(link)) {
1179 *class = ATA_DEV_NONE;
1186 static void piix_sidpr_error_handler(struct ata_port *ap)
1188 ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset,
1189 piix_sidpr_hardreset, ata_std_postreset);
1193 static int piix_broken_suspend(void)
1195 static const struct dmi_system_id sysids[] = {
1197 .ident = "TECRA M3",
1199 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1200 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
1204 .ident = "TECRA M3",
1206 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1207 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
1211 .ident = "TECRA M4",
1213 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1214 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
1218 .ident = "TECRA M5",
1220 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1221 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
1225 .ident = "TECRA M6",
1227 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1228 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
1232 .ident = "TECRA M7",
1234 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1235 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
1239 .ident = "TECRA A8",
1241 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1242 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
1246 .ident = "Satellite R20",
1248 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1249 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
1253 .ident = "Satellite R25",
1255 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1256 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
1260 .ident = "Satellite U200",
1262 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1263 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
1267 .ident = "Satellite U200",
1269 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1270 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
1274 .ident = "Satellite Pro U200",
1276 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1277 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
1281 .ident = "Satellite U205",
1283 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1284 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
1288 .ident = "SATELLITE U205",
1290 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1291 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
1295 .ident = "Portege M500",
1297 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
1298 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
1302 { } /* terminate list */
1304 static const char *oemstrs[] = {
1309 if (dmi_check_system(sysids))
1312 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
1313 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
1319 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1321 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1322 unsigned long flags;
1325 rc = ata_host_suspend(host, mesg);
1329 /* Some braindamaged ACPI suspend implementations expect the
1330 * controller to be awake on entry; otherwise, it burns cpu
1331 * cycles and power trying to do something to the sleeping
1334 if (piix_broken_suspend() && mesg.event == PM_EVENT_SUSPEND) {
1335 pci_save_state(pdev);
1337 /* mark its power state as "unknown", since we don't
1338 * know if e.g. the BIOS will change its device state
1341 if (pdev->current_state == PCI_D0)
1342 pdev->current_state = PCI_UNKNOWN;
1344 /* tell resume that it's waking up from broken suspend */
1345 spin_lock_irqsave(&host->lock, flags);
1346 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1347 spin_unlock_irqrestore(&host->lock, flags);
1349 ata_pci_device_do_suspend(pdev, mesg);
1354 static int piix_pci_device_resume(struct pci_dev *pdev)
1356 struct ata_host *host = dev_get_drvdata(&pdev->dev);
1357 unsigned long flags;
1360 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1361 spin_lock_irqsave(&host->lock, flags);
1362 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1363 spin_unlock_irqrestore(&host->lock, flags);
1365 pci_set_power_state(pdev, PCI_D0);
1366 pci_restore_state(pdev);
1368 /* PCI device wasn't disabled during suspend. Use
1369 * pci_reenable_device() to avoid affecting the enable
1372 rc = pci_reenable_device(pdev);
1374 dev_printk(KERN_ERR, &pdev->dev, "failed to enable "
1375 "device after resume (%d)\n", rc);
1377 rc = ata_pci_device_do_resume(pdev);
1380 ata_host_resume(host);
1386 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1388 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1391 #define AHCI_PCI_BAR 5
1392 #define AHCI_GLOBAL_CTL 0x04
1393 #define AHCI_ENABLE (1 << 31)
1394 static int piix_disable_ahci(struct pci_dev *pdev)
1400 /* BUG: pci_enable_device has not yet been called. This
1401 * works because this device is usually set up by BIOS.
1404 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1405 !pci_resource_len(pdev, AHCI_PCI_BAR))
1408 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1412 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1413 if (tmp & AHCI_ENABLE) {
1414 tmp &= ~AHCI_ENABLE;
1415 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1417 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1418 if (tmp & AHCI_ENABLE)
1422 pci_iounmap(pdev, mmio);
1427 * piix_check_450nx_errata - Check for problem 450NX setup
1428 * @ata_dev: the PCI device to check
1430 * Check for the present of 450NX errata #19 and errata #25. If
1431 * they are found return an error code so we can turn off DMA
1434 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
1436 struct pci_dev *pdev = NULL;
1438 int no_piix_dma = 0;
1440 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1441 /* Look for 450NX PXB. Check for problem configurations
1442 A PCI quirk checks bit 6 already */
1443 pci_read_config_word(pdev, 0x41, &cfg);
1444 /* Only on the original revision: IDE DMA can hang */
1445 if (pdev->revision == 0x00)
1447 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1448 else if (cfg & (1<<14) && pdev->revision < 5)
1452 dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
1453 if (no_piix_dma == 2)
1454 dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
1458 static void __devinit piix_init_pcs(struct ata_host *host,
1459 const struct piix_map_db *map_db)
1461 struct pci_dev *pdev = to_pci_dev(host->dev);
1464 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1466 new_pcs = pcs | map_db->port_enable;
1468 if (new_pcs != pcs) {
1469 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1470 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1475 static const int *__devinit piix_init_sata_map(struct pci_dev *pdev,
1476 struct ata_port_info *pinfo,
1477 const struct piix_map_db *map_db)
1480 int i, invalid_map = 0;
1483 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1485 map = map_db->map[map_value & map_db->mask];
1487 dev_printk(KERN_INFO, &pdev->dev, "MAP [");
1488 for (i = 0; i < 4; i++) {
1500 WARN_ON((i & 1) || map[i + 1] != IDE);
1501 pinfo[i / 2] = piix_port_info[ich_pata_100];
1507 printk(" P%d", map[i]);
1509 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1516 dev_printk(KERN_ERR, &pdev->dev,
1517 "invalid MAP value %u\n", map_value);
1522 static void __devinit piix_init_sidpr(struct ata_host *host)
1524 struct pci_dev *pdev = to_pci_dev(host->dev);
1525 struct piix_host_priv *hpriv = host->private_data;
1528 /* check for availability */
1529 for (i = 0; i < 4; i++)
1530 if (hpriv->map[i] == IDE)
1533 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1536 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1537 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1540 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1543 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1544 host->ports[0]->ops = &piix_sidpr_sata_ops;
1545 host->ports[1]->ops = &piix_sidpr_sata_ops;
1548 static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
1550 static const struct dmi_system_id sysids[] = {
1552 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1553 * isn't used to boot the system which
1554 * disables the channel.
1558 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1559 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1563 { } /* terminate list */
1567 if (!dmi_check_system(sysids))
1570 /* The datasheet says that bit 18 is NOOP but certain systems
1571 * seem to use it to disable a channel. Clear the bit on the
1574 pci_read_config_dword(pdev, PIIX_IOCFG, &iocfg);
1575 if (iocfg & (1 << 18)) {
1576 dev_printk(KERN_INFO, &pdev->dev,
1577 "applying IOCFG bit18 quirk\n");
1578 iocfg &= ~(1 << 18);
1579 pci_write_config_dword(pdev, PIIX_IOCFG, iocfg);
1584 * piix_init_one - Register PIIX ATA PCI device with kernel services
1585 * @pdev: PCI device to register
1586 * @ent: Entry in piix_pci_tbl matching with @pdev
1588 * Called from kernel PCI layer. We probe for combined mode (sigh),
1589 * and then hand over control to libata, for it to do the rest.
1592 * Inherited from PCI layer (may sleep).
1595 * Zero on success, or -ERRNO value.
1598 static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1600 static int printed_version;
1601 struct device *dev = &pdev->dev;
1602 struct ata_port_info port_info[2];
1603 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1604 unsigned long port_flags;
1605 struct ata_host *host;
1606 struct piix_host_priv *hpriv;
1609 if (!printed_version++)
1610 dev_printk(KERN_DEBUG, &pdev->dev,
1611 "version " DRV_VERSION "\n");
1613 /* no hotplugging support (FIXME) */
1614 if (!in_module_init)
1617 port_info[0] = piix_port_info[ent->driver_data];
1618 port_info[1] = piix_port_info[ent->driver_data];
1620 port_flags = port_info[0].flags;
1622 /* enable device and prepare host */
1623 rc = pcim_enable_device(pdev);
1627 /* SATA map init can change port_info, do it before prepping host */
1628 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1632 if (port_flags & ATA_FLAG_SATA)
1633 hpriv->map = piix_init_sata_map(pdev, port_info,
1634 piix_map_db_table[ent->driver_data]);
1636 rc = ata_pci_prepare_sff_host(pdev, ppi, &host);
1639 host->private_data = hpriv;
1641 /* initialize controller */
1642 if (port_flags & PIIX_FLAG_AHCI) {
1644 pci_read_config_byte(pdev, PIIX_SCC, &tmp);
1645 if (tmp == PIIX_AHCI_DEVICE) {
1646 int rc = piix_disable_ahci(pdev);
1652 if (port_flags & ATA_FLAG_SATA) {
1653 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1654 piix_init_sidpr(host);
1657 /* apply IOCFG bit18 quirk */
1658 piix_iocfg_bit18_quirk(pdev);
1660 /* On ICH5, some BIOSen disable the interrupt using the
1661 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1662 * On ICH6, this bit has the same effect, but only when
1663 * MSI is disabled (and it is disabled, as we don't use
1664 * message-signalled interrupts currently).
1666 if (port_flags & PIIX_FLAG_CHECKINTR)
1669 if (piix_check_450nx_errata(pdev)) {
1670 /* This writes into the master table but it does not
1671 really matter for this errata as we will apply it to
1672 all the PIIX devices on the board */
1673 host->ports[0]->mwdma_mask = 0;
1674 host->ports[0]->udma_mask = 0;
1675 host->ports[1]->mwdma_mask = 0;
1676 host->ports[1]->udma_mask = 0;
1679 pci_set_master(pdev);
1680 return ata_pci_activate_sff_host(host, ata_interrupt, &piix_sht);
1683 static int __init piix_init(void)
1687 DPRINTK("pci_register_driver\n");
1688 rc = pci_register_driver(&piix_pci_driver);
1698 static void __exit piix_exit(void)
1700 pci_unregister_driver(&piix_pci_driver);
1703 module_init(piix_init);
1704 module_exit(piix_exit);