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[MIPS] Update mpc30x_defconfig
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / ata / ata_piix.c
blob071d274afaabcf6a971831019c44e50900d306c9
1 /*
2 * ata_piix.c - Intel PATA/SATA controllers
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 *
9 * Copyright 2003-2005 Red Hat Inc
10 * Copyright 2003-2005 Jeff Garzik
11 *
12 *
13 * Copyright header from piix.c:
14 *
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>
18 *
19 *
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)
23 * any later version.
24 *
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.
29 *
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.
33 *
34 *
35 * libata documentation is available via 'make {ps|pdf}docs',
36 * as Documentation/DocBook/libata.*
37 *
38 * Hardware documentation available at http://developer.intel.com/
39 *
40 * Documentation
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.
45 *
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.
53 *
54 * Errata of note:
55 *
56 * Unfixable
57 * PIIX4 errata #9 - Only on ultra obscure hw
58 * ICH3 errata #13 - Not observed to affect real hw
59 * by Intel
60 *
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 *
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
83 */
84
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>
95
96 #define DRV_NAME "ata_piix"
97 #define DRV_VERSION "2.11"
98
99 enum {
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 */
104
105 PIIX_FLAG_SCR = (1 << 26), /* SCR available */
106 PIIX_FLAG_AHCI = (1 << 27), /* AHCI possible */
107 PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
108
109 PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS,
110 PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
111
112 /* combined mode. if set, PATA is channel 0.
113 * if clear, PATA is channel 1.
114 */
115 PIIX_PORT_ENABLED = (1 << 0),
116 PIIX_PORT_PRESENT = (1 << 4),
117
118 PIIX_80C_PRI = (1 << 5) | (1 << 4),
119 PIIX_80C_SEC = (1 << 7) | (1 << 6),
120
121 /* controller IDs */
122 piix_pata_33 = 0, /* PIIX4 at 33Mhz */
123 ich_pata_33 = 1, /* ICH up to UDMA 33 only */
124 ich_pata_66 = 2, /* ICH up to 66 Mhz */
125 ich_pata_100 = 3, /* ICH up to UDMA 100 */
126 ich_pata_133 = 4, /* ICH up to UDMA 133 */
127 ich5_sata = 5,
128 ich6_sata = 6,
129 ich6_sata_ahci = 7,
130 ich6m_sata_ahci = 8,
131 ich8_sata_ahci = 9,
132 piix_pata_mwdma = 10, /* PIIX3 MWDMA only */
133
134 /* constants for mapping table */
135 P0 = 0, /* port 0 */
136 P1 = 1, /* port 1 */
137 P2 = 2, /* port 2 */
138 P3 = 3, /* port 3 */
139 IDE = -1, /* IDE */
140 NA = -2, /* not avaliable */
141 RV = -3, /* reserved */
142
143 PIIX_AHCI_DEVICE = 6,
144
145 /* host->flags bits */
146 PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
147 };
148
149 struct piix_map_db {
150 const u32 mask;
151 const u16 port_enable;
152 const int map[][4];
153 };
154
155 struct piix_host_priv {
156 const int *map;
157 };
158
159 static int piix_init_one (struct pci_dev *pdev,
160 const struct pci_device_id *ent);
161 static void piix_pata_error_handler(struct ata_port *ap);
162 static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev);
163 static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev);
164 static void ich_set_dmamode (struct ata_port *ap, struct ata_device *adev);
165 static int ich_pata_cable_detect(struct ata_port *ap);
166 #ifdef CONFIG_PM
167 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
168 static int piix_pci_device_resume(struct pci_dev *pdev);
169 #endif
170
171 static unsigned int in_module_init = 1;
172
173 static const struct pci_device_id piix_pci_tbl[] = {
174 /* Intel PIIX3 for the 430HX etc */
175 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
176 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
177 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
178 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
179 /* Intel PIIX4 */
180 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
181 /* Intel PIIX4 */
182 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
183 /* Intel PIIX */
184 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
185 /* Intel ICH (i810, i815, i840) UDMA 66*/
186 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
187 /* Intel ICH0 : UDMA 33*/
188 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
189 /* Intel ICH2M */
190 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
191 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
192 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
193 /* Intel ICH3M */
194 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
195 /* Intel ICH3 (E7500/1) UDMA 100 */
196 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
197 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
198 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
199 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
200 /* Intel ICH5 */
201 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 },
202 /* C-ICH (i810E2) */
203 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
204 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
205 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
206 /* ICH6 (and 6) (i915) UDMA 100 */
207 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
208 /* ICH7/7-R (i945, i975) UDMA 100*/
209 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 },
210 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
211 /* ICH8 Mobile PATA Controller */
212 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
213
214 /* NOTE: The following PCI ids must be kept in sync with the
215 * list in drivers/pci/quirks.c.
216 */
217
218 /* 82801EB (ICH5) */
219 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
220 /* 82801EB (ICH5) */
221 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
222 /* 6300ESB (ICH5 variant with broken PCS present bits) */
223 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
224 /* 6300ESB pretending RAID */
225 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
226 /* 82801FB/FW (ICH6/ICH6W) */
227 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
228 /* 82801FR/FRW (ICH6R/ICH6RW) */
229 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
230 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented) */
231 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci },
232 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
233 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
234 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
235 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci },
236 /* Enterprise Southbridge 2 (631xESB/632xESB) */
237 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
238 /* SATA Controller 1 IDE (ICH8) */
239 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
240 /* SATA Controller 2 IDE (ICH8) */
241 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
242 /* Mobile SATA Controller IDE (ICH8M) */
243 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
244 /* SATA Controller IDE (ICH9) */
245 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
246 /* SATA Controller IDE (ICH9) */
247 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
248 /* SATA Controller IDE (ICH9) */
249 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
250 /* SATA Controller IDE (ICH9M) */
251 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
252 /* SATA Controller IDE (ICH9M) */
253 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
254 /* SATA Controller IDE (ICH9M) */
255 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci },
256
257 { } /* terminate list */
258 };
259
260 static struct pci_driver piix_pci_driver = {
261 .name = DRV_NAME,
262 .id_table = piix_pci_tbl,
263 .probe = piix_init_one,
264 .remove = ata_pci_remove_one,
265 #ifdef CONFIG_PM
266 .suspend = piix_pci_device_suspend,
267 .resume = piix_pci_device_resume,
268 #endif
269 };
270
271 static struct scsi_host_template piix_sht = {
272 .module = THIS_MODULE,
273 .name = DRV_NAME,
274 .ioctl = ata_scsi_ioctl,
275 .queuecommand = ata_scsi_queuecmd,
276 .can_queue = ATA_DEF_QUEUE,
277 .this_id = ATA_SHT_THIS_ID,
278 .sg_tablesize = LIBATA_MAX_PRD,
279 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
280 .emulated = ATA_SHT_EMULATED,
281 .use_clustering = ATA_SHT_USE_CLUSTERING,
282 .proc_name = DRV_NAME,
283 .dma_boundary = ATA_DMA_BOUNDARY,
284 .slave_configure = ata_scsi_slave_config,
285 .slave_destroy = ata_scsi_slave_destroy,
286 .bios_param = ata_std_bios_param,
287 };
288
289 static const struct ata_port_operations piix_pata_ops = {
290 .port_disable = ata_port_disable,
291 .set_piomode = piix_set_piomode,
292 .set_dmamode = piix_set_dmamode,
293 .mode_filter = ata_pci_default_filter,
294
295 .tf_load = ata_tf_load,
296 .tf_read = ata_tf_read,
297 .check_status = ata_check_status,
298 .exec_command = ata_exec_command,
299 .dev_select = ata_std_dev_select,
300
301 .bmdma_setup = ata_bmdma_setup,
302 .bmdma_start = ata_bmdma_start,
303 .bmdma_stop = ata_bmdma_stop,
304 .bmdma_status = ata_bmdma_status,
305 .qc_prep = ata_qc_prep,
306 .qc_issue = ata_qc_issue_prot,
307 .data_xfer = ata_data_xfer,
308
309 .freeze = ata_bmdma_freeze,
310 .thaw = ata_bmdma_thaw,
311 .error_handler = piix_pata_error_handler,
312 .post_internal_cmd = ata_bmdma_post_internal_cmd,
313 .cable_detect = ata_cable_40wire,
314
315 .irq_handler = ata_interrupt,
316 .irq_clear = ata_bmdma_irq_clear,
317 .irq_on = ata_irq_on,
318 .irq_ack = ata_irq_ack,
319
320 .port_start = ata_port_start,
321 };
322
323 static const struct ata_port_operations ich_pata_ops = {
324 .port_disable = ata_port_disable,
325 .set_piomode = piix_set_piomode,
326 .set_dmamode = ich_set_dmamode,
327 .mode_filter = ata_pci_default_filter,
328
329 .tf_load = ata_tf_load,
330 .tf_read = ata_tf_read,
331 .check_status = ata_check_status,
332 .exec_command = ata_exec_command,
333 .dev_select = ata_std_dev_select,
334
335 .bmdma_setup = ata_bmdma_setup,
336 .bmdma_start = ata_bmdma_start,
337 .bmdma_stop = ata_bmdma_stop,
338 .bmdma_status = ata_bmdma_status,
339 .qc_prep = ata_qc_prep,
340 .qc_issue = ata_qc_issue_prot,
341 .data_xfer = ata_data_xfer,
342
343 .freeze = ata_bmdma_freeze,
344 .thaw = ata_bmdma_thaw,
345 .error_handler = piix_pata_error_handler,
346 .post_internal_cmd = ata_bmdma_post_internal_cmd,
347 .cable_detect = ich_pata_cable_detect,
348
349 .irq_handler = ata_interrupt,
350 .irq_clear = ata_bmdma_irq_clear,
351 .irq_on = ata_irq_on,
352 .irq_ack = ata_irq_ack,
353
354 .port_start = ata_port_start,
355 };
356
357 static const struct ata_port_operations piix_sata_ops = {
358 .port_disable = ata_port_disable,
359
360 .tf_load = ata_tf_load,
361 .tf_read = ata_tf_read,
362 .check_status = ata_check_status,
363 .exec_command = ata_exec_command,
364 .dev_select = ata_std_dev_select,
365
366 .bmdma_setup = ata_bmdma_setup,
367 .bmdma_start = ata_bmdma_start,
368 .bmdma_stop = ata_bmdma_stop,
369 .bmdma_status = ata_bmdma_status,
370 .qc_prep = ata_qc_prep,
371 .qc_issue = ata_qc_issue_prot,
372 .data_xfer = ata_data_xfer,
373
374 .freeze = ata_bmdma_freeze,
375 .thaw = ata_bmdma_thaw,
376 .error_handler = ata_bmdma_error_handler,
377 .post_internal_cmd = ata_bmdma_post_internal_cmd,
378
379 .irq_handler = ata_interrupt,
380 .irq_clear = ata_bmdma_irq_clear,
381 .irq_on = ata_irq_on,
382 .irq_ack = ata_irq_ack,
383
384 .port_start = ata_port_start,
385 };
386
387 static const struct piix_map_db ich5_map_db = {
388 .mask = 0x7,
389 .port_enable = 0x3,
390 .map = {
391 /* PM PS SM SS MAP */
392 { P0, NA, P1, NA }, /* 000b */
393 { P1, NA, P0, NA }, /* 001b */
394 { RV, RV, RV, RV },
395 { RV, RV, RV, RV },
396 { P0, P1, IDE, IDE }, /* 100b */
397 { P1, P0, IDE, IDE }, /* 101b */
398 { IDE, IDE, P0, P1 }, /* 110b */
399 { IDE, IDE, P1, P0 }, /* 111b */
400 },
401 };
402
403 static const struct piix_map_db ich6_map_db = {
404 .mask = 0x3,
405 .port_enable = 0xf,
406 .map = {
407 /* PM PS SM SS MAP */
408 { P0, P2, P1, P3 }, /* 00b */
409 { IDE, IDE, P1, P3 }, /* 01b */
410 { P0, P2, IDE, IDE }, /* 10b */
411 { RV, RV, RV, RV },
412 },
413 };
414
415 static const struct piix_map_db ich6m_map_db = {
416 .mask = 0x3,
417 .port_enable = 0x5,
418
419 /* Map 01b isn't specified in the doc but some notebooks use
420 * it anyway. MAP 01b have been spotted on both ICH6M and
421 * ICH7M.
422 */
423 .map = {
424 /* PM PS SM SS MAP */
425 { P0, P2, NA, NA }, /* 00b */
426 { IDE, IDE, P1, P3 }, /* 01b */
427 { P0, P2, IDE, IDE }, /* 10b */
428 { RV, RV, RV, RV },
429 },
430 };
431
432 static const struct piix_map_db ich8_map_db = {
433 .mask = 0x3,
434 .port_enable = 0x3,
435 .map = {
436 /* PM PS SM SS MAP */
437 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
438 { RV, RV, RV, RV },
439 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
440 { RV, RV, RV, RV },
441 },
442 };
443
444 static const struct piix_map_db *piix_map_db_table[] = {
445 [ich5_sata] = &ich5_map_db,
446 [ich6_sata] = &ich6_map_db,
447 [ich6_sata_ahci] = &ich6_map_db,
448 [ich6m_sata_ahci] = &ich6m_map_db,
449 [ich8_sata_ahci] = &ich8_map_db,
450 };
451
452 static struct ata_port_info piix_port_info[] = {
453 /* piix_pata_33: 0: PIIX4 at 33MHz */
454 {
455 .sht = &piix_sht,
456 .flags = PIIX_PATA_FLAGS,
457 .pio_mask = 0x1f, /* pio0-4 */
458 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
459 .udma_mask = ATA_UDMA_MASK_40C,
460 .port_ops = &piix_pata_ops,
461 },
462
463 /* ich_pata_33: 1 ICH0 - ICH at 33Mhz*/
464 {
465 .sht = &piix_sht,
466 .flags = PIIX_PATA_FLAGS,
467 .pio_mask = 0x1f, /* pio 0-4 */
468 .mwdma_mask = 0x06, /* Check: maybe 0x07 */
469 .udma_mask = ATA_UDMA2, /* UDMA33 */
470 .port_ops = &ich_pata_ops,
471 },
472 /* ich_pata_66: 2 ICH controllers up to 66MHz */
473 {
474 .sht = &piix_sht,
475 .flags = PIIX_PATA_FLAGS,
476 .pio_mask = 0x1f, /* pio 0-4 */
477 .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */
478 .udma_mask = ATA_UDMA4,
479 .port_ops = &ich_pata_ops,
480 },
481
482 /* ich_pata_100: 3 */
483 {
484 .sht = &piix_sht,
485 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
486 .pio_mask = 0x1f, /* pio0-4 */
487 .mwdma_mask = 0x06, /* mwdma1-2 */
488 .udma_mask = ATA_UDMA5, /* udma0-5 */
489 .port_ops = &ich_pata_ops,
490 },
491
492 /* ich_pata_133: 4 ICH with full UDMA6 */
493 {
494 .sht = &piix_sht,
495 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
496 .pio_mask = 0x1f, /* pio 0-4 */
497 .mwdma_mask = 0x06, /* Check: maybe 0x07 */
498 .udma_mask = ATA_UDMA6, /* UDMA133 */
499 .port_ops = &ich_pata_ops,
500 },
501
502 /* ich5_sata: 5 */
503 {
504 .sht = &piix_sht,
505 .flags = PIIX_SATA_FLAGS,
506 .pio_mask = 0x1f, /* pio0-4 */
507 .mwdma_mask = 0x07, /* mwdma0-2 */
508 .udma_mask = ATA_UDMA6,
509 .port_ops = &piix_sata_ops,
510 },
511
512 /* ich6_sata: 6 */
513 {
514 .sht = &piix_sht,
515 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR,
516 .pio_mask = 0x1f, /* pio0-4 */
517 .mwdma_mask = 0x07, /* mwdma0-2 */
518 .udma_mask = ATA_UDMA6,
519 .port_ops = &piix_sata_ops,
520 },
521
522 /* ich6_sata_ahci: 7 */
523 {
524 .sht = &piix_sht,
525 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
526 PIIX_FLAG_AHCI,
527 .pio_mask = 0x1f, /* pio0-4 */
528 .mwdma_mask = 0x07, /* mwdma0-2 */
529 .udma_mask = ATA_UDMA6,
530 .port_ops = &piix_sata_ops,
531 },
532
533 /* ich6m_sata_ahci: 8 */
534 {
535 .sht = &piix_sht,
536 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
537 PIIX_FLAG_AHCI,
538 .pio_mask = 0x1f, /* pio0-4 */
539 .mwdma_mask = 0x07, /* mwdma0-2 */
540 .udma_mask = ATA_UDMA6,
541 .port_ops = &piix_sata_ops,
542 },
543
544 /* ich8_sata_ahci: 9 */
545 {
546 .sht = &piix_sht,
547 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR |
548 PIIX_FLAG_AHCI,
549 .pio_mask = 0x1f, /* pio0-4 */
550 .mwdma_mask = 0x07, /* mwdma0-2 */
551 .udma_mask = ATA_UDMA6,
552 .port_ops = &piix_sata_ops,
553 },
554
555 /* piix_pata_mwdma: 10: PIIX3 MWDMA only */
556 {
557 .sht = &piix_sht,
558 .flags = PIIX_PATA_FLAGS,
559 .pio_mask = 0x1f, /* pio0-4 */
560 .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
561 .port_ops = &piix_pata_ops,
562 },
563 };
564
565 static struct pci_bits piix_enable_bits[] = {
566 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
567 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
568 };
569
570 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
571 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
572 MODULE_LICENSE("GPL");
573 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
574 MODULE_VERSION(DRV_VERSION);
575
576 struct ich_laptop {
577 u16 device;
578 u16 subvendor;
579 u16 subdevice;
580 };
581
582 /*
583 * List of laptops that use short cables rather than 80 wire
584 */
585
586 static const struct ich_laptop ich_laptop[] = {
587 /* devid, subvendor, subdev */
588 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
589 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
590 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
591 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
592 /* end marker */
593 { 0, }
594 };
595
596 /**
597 * ich_pata_cable_detect - Probe host controller cable detect info
598 * @ap: Port for which cable detect info is desired
599 *
600 * Read 80c cable indicator from ATA PCI device's PCI config
601 * register. This register is normally set by firmware (BIOS).
602 *
603 * LOCKING:
604 * None (inherited from caller).
605 */
606
607 static int ich_pata_cable_detect(struct ata_port *ap)
608 {
609 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
610 const struct ich_laptop *lap = &ich_laptop[0];
611 u8 tmp, mask;
612
613 /* Check for specials - Acer Aspire 5602WLMi */
614 while (lap->device) {
615 if (lap->device == pdev->device &&
616 lap->subvendor == pdev->subsystem_vendor &&
617 lap->subdevice == pdev->subsystem_device) {
618 return ATA_CBL_PATA40_SHORT;
619 }
620 lap++;
621 }
622
623 /* check BIOS cable detect results */
624 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
625 pci_read_config_byte(pdev, PIIX_IOCFG, &tmp);
626 if ((tmp & mask) == 0)
627 return ATA_CBL_PATA40;
628 return ATA_CBL_PATA80;
629 }
630
631 /**
632 * piix_pata_prereset - prereset for PATA host controller
633 * @ap: Target port
634 * @deadline: deadline jiffies for the operation
635 *
636 * LOCKING:
637 * None (inherited from caller).
638 */
639 static int piix_pata_prereset(struct ata_port *ap, unsigned long deadline)
640 {
641 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
642
643 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
644 return -ENOENT;
645 return ata_std_prereset(ap, deadline);
646 }
647
648 static void piix_pata_error_handler(struct ata_port *ap)
649 {
650 ata_bmdma_drive_eh(ap, piix_pata_prereset, ata_std_softreset, NULL,
651 ata_std_postreset);
652 }
653
654 /**
655 * piix_set_piomode - Initialize host controller PATA PIO timings
656 * @ap: Port whose timings we are configuring
657 * @adev: um
658 *
659 * Set PIO mode for device, in host controller PCI config space.
660 *
661 * LOCKING:
662 * None (inherited from caller).
663 */
664
665 static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev)
666 {
667 unsigned int pio = adev->pio_mode - XFER_PIO_0;
668 struct pci_dev *dev = to_pci_dev(ap->host->dev);
669 unsigned int is_slave = (adev->devno != 0);
670 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
671 unsigned int slave_port = 0x44;
672 u16 master_data;
673 u8 slave_data;
674 u8 udma_enable;
675 int control = 0;
676
677 /*
678 * See Intel Document 298600-004 for the timing programing rules
679 * for ICH controllers.
680 */
681
682 static const /* ISP RTC */
683 u8 timings[][2] = { { 0, 0 },
684 { 0, 0 },
685 { 1, 0 },
686 { 2, 1 },
687 { 2, 3 }, };
688
689 if (pio >= 2)
690 control |= 1; /* TIME1 enable */
691 if (ata_pio_need_iordy(adev))
692 control |= 2; /* IE enable */
693
694 /* Intel specifies that the PPE functionality is for disk only */
695 if (adev->class == ATA_DEV_ATA)
696 control |= 4; /* PPE enable */
697
698 /* PIO configuration clears DTE unconditionally. It will be
699 * programmed in set_dmamode which is guaranteed to be called
700 * after set_piomode if any DMA mode is available.
701 */
702 pci_read_config_word(dev, master_port, &master_data);
703 if (is_slave) {
704 /* clear TIME1|IE1|PPE1|DTE1 */
705 master_data &= 0xff0f;
706 /* Enable SITRE (seperate slave timing register) */
707 master_data |= 0x4000;
708 /* enable PPE1, IE1 and TIME1 as needed */
709 master_data |= (control << 4);
710 pci_read_config_byte(dev, slave_port, &slave_data);
711 slave_data &= (ap->port_no ? 0x0f : 0xf0);
712 /* Load the timing nibble for this slave */
713 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
714 << (ap->port_no ? 4 : 0);
715 } else {
716 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
717 master_data &= 0xccf0;
718 /* Enable PPE, IE and TIME as appropriate */
719 master_data |= control;
720 /* load ISP and RCT */
721 master_data |=
722 (timings[pio][0] << 12) |
723 (timings[pio][1] << 8);
724 }
725 pci_write_config_word(dev, master_port, master_data);
726 if (is_slave)
727 pci_write_config_byte(dev, slave_port, slave_data);
728
729 /* Ensure the UDMA bit is off - it will be turned back on if
730 UDMA is selected */
731
732 if (ap->udma_mask) {
733 pci_read_config_byte(dev, 0x48, &udma_enable);
734 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
735 pci_write_config_byte(dev, 0x48, udma_enable);
736 }
737 }
738
739 /**
740 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
741 * @ap: Port whose timings we are configuring
742 * @adev: Drive in question
743 * @udma: udma mode, 0 - 6
744 * @isich: set if the chip is an ICH device
745 *
746 * Set UDMA mode for device, in host controller PCI config space.
747 *
748 * LOCKING:
749 * None (inherited from caller).
750 */
751
752 static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, int isich)
753 {
754 struct pci_dev *dev = to_pci_dev(ap->host->dev);
755 u8 master_port = ap->port_no ? 0x42 : 0x40;
756 u16 master_data;
757 u8 speed = adev->dma_mode;
758 int devid = adev->devno + 2 * ap->port_no;
759 u8 udma_enable = 0;
760
761 static const /* ISP RTC */
762 u8 timings[][2] = { { 0, 0 },
763 { 0, 0 },
764 { 1, 0 },
765 { 2, 1 },
766 { 2, 3 }, };
767
768 pci_read_config_word(dev, master_port, &master_data);
769 if (ap->udma_mask)
770 pci_read_config_byte(dev, 0x48, &udma_enable);
771
772 if (speed >= XFER_UDMA_0) {
773 unsigned int udma = adev->dma_mode - XFER_UDMA_0;
774 u16 udma_timing;
775 u16 ideconf;
776 int u_clock, u_speed;
777
778 /*
779 * UDMA is handled by a combination of clock switching and
780 * selection of dividers
781 *
782 * Handy rule: Odd modes are UDMATIMx 01, even are 02
783 * except UDMA0 which is 00
784 */
785 u_speed = min(2 - (udma & 1), udma);
786 if (udma == 5)
787 u_clock = 0x1000; /* 100Mhz */
788 else if (udma > 2)
789 u_clock = 1; /* 66Mhz */
790 else
791 u_clock = 0; /* 33Mhz */
792
793 udma_enable |= (1 << devid);
794
795 /* Load the CT/RP selection */
796 pci_read_config_word(dev, 0x4A, &udma_timing);
797 udma_timing &= ~(3 << (4 * devid));
798 udma_timing |= u_speed << (4 * devid);
799 pci_write_config_word(dev, 0x4A, udma_timing);
800
801 if (isich) {
802 /* Select a 33/66/100Mhz clock */
803 pci_read_config_word(dev, 0x54, &ideconf);
804 ideconf &= ~(0x1001 << devid);
805 ideconf |= u_clock << devid;
806 /* For ICH or later we should set bit 10 for better
807 performance (WR_PingPong_En) */
808 pci_write_config_word(dev, 0x54, ideconf);
809 }
810 } else {
811 /*
812 * MWDMA is driven by the PIO timings. We must also enable
813 * IORDY unconditionally along with TIME1. PPE has already
814 * been set when the PIO timing was set.
815 */
816 unsigned int mwdma = adev->dma_mode - XFER_MW_DMA_0;
817 unsigned int control;
818 u8 slave_data;
819 const unsigned int needed_pio[3] = {
820 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
821 };
822 int pio = needed_pio[mwdma] - XFER_PIO_0;
823
824 control = 3; /* IORDY|TIME1 */
825
826 /* If the drive MWDMA is faster than it can do PIO then
827 we must force PIO into PIO0 */
828
829 if (adev->pio_mode < needed_pio[mwdma])
830 /* Enable DMA timing only */
831 control |= 8; /* PIO cycles in PIO0 */
832
833 if (adev->devno) { /* Slave */
834 master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */
835 master_data |= control << 4;
836 pci_read_config_byte(dev, 0x44, &slave_data);
837 slave_data &= (ap->port_no ? 0x0f : 0xf0);
838 /* Load the matching timing */
839 slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0);
840 pci_write_config_byte(dev, 0x44, slave_data);
841 } else { /* Master */
842 master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY
843 and master timing bits */
844 master_data |= control;
845 master_data |=
846 (timings[pio][0] << 12) |
847 (timings[pio][1] << 8);
848 }
849
850 if (ap->udma_mask) {
851 udma_enable &= ~(1 << devid);
852 pci_write_config_word(dev, master_port, master_data);
853 }
854 }
855 /* Don't scribble on 0x48 if the controller does not support UDMA */
856 if (ap->udma_mask)
857 pci_write_config_byte(dev, 0x48, udma_enable);
858 }
859
860 /**
861 * piix_set_dmamode - Initialize host controller PATA DMA timings
862 * @ap: Port whose timings we are configuring
863 * @adev: um
864 *
865 * Set MW/UDMA mode for device, in host controller PCI config space.
866 *
867 * LOCKING:
868 * None (inherited from caller).
869 */
870
871 static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev)
872 {
873 do_pata_set_dmamode(ap, adev, 0);
874 }
875
876 /**
877 * ich_set_dmamode - Initialize host controller PATA DMA timings
878 * @ap: Port whose timings we are configuring
879 * @adev: um
880 *
881 * Set MW/UDMA mode for device, in host controller PCI config space.
882 *
883 * LOCKING:
884 * None (inherited from caller).
885 */
886
887 static void ich_set_dmamode (struct ata_port *ap, struct ata_device *adev)
888 {
889 do_pata_set_dmamode(ap, adev, 1);
890 }
891
892 #ifdef CONFIG_PM
893 static int piix_broken_suspend(void)
894 {
895 static struct dmi_system_id sysids[] = {
896 {
897 .ident = "TECRA M5",
898 .matches = {
899 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
900 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
901 },
902 },
903 {
904 .ident = "TECRA M7",
905 .matches = {
906 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
907 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
908 },
909 },
910 {
911 .ident = "Satellite U205",
912 .matches = {
913 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
914 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
915 },
916 },
917 {
918 .ident = "Portege M500",
919 .matches = {
920 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
921 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
922 },
923 },
924 { }
925 };
926 static const char *oemstrs[] = {
927 "Tecra M3,",
928 };
929 int i;
930
931 if (dmi_check_system(sysids))
932 return 1;
933
934 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
935 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
936 return 1;
937
938 return 0;
939 }
940
941 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
942 {
943 struct ata_host *host = dev_get_drvdata(&pdev->dev);
944 unsigned long flags;
945 int rc = 0;
946
947 rc = ata_host_suspend(host, mesg);
948 if (rc)
949 return rc;
950
951 /* Some braindamaged ACPI suspend implementations expect the
952 * controller to be awake on entry; otherwise, it burns cpu
953 * cycles and power trying to do something to the sleeping
954 * beauty.
955 */
956 if (piix_broken_suspend() && mesg.event == PM_EVENT_SUSPEND) {
957 pci_save_state(pdev);
958
959 /* mark its power state as "unknown", since we don't
960 * know if e.g. the BIOS will change its device state
961 * when we suspend.
962 */
963 if (pdev->current_state == PCI_D0)
964 pdev->current_state = PCI_UNKNOWN;
965
966 /* tell resume that it's waking up from broken suspend */
967 spin_lock_irqsave(&host->lock, flags);
968 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
969 spin_unlock_irqrestore(&host->lock, flags);
970 } else
971 ata_pci_device_do_suspend(pdev, mesg);
972
973 return 0;
974 }
975
976 static int piix_pci_device_resume(struct pci_dev *pdev)
977 {
978 struct ata_host *host = dev_get_drvdata(&pdev->dev);
979 unsigned long flags;
980 int rc;
981
982 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
983 spin_lock_irqsave(&host->lock, flags);
984 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
985 spin_unlock_irqrestore(&host->lock, flags);
986
987 pci_set_power_state(pdev, PCI_D0);
988 pci_restore_state(pdev);
989
990 /* PCI device wasn't disabled during suspend. Use
991 * pci_reenable_device() to avoid affecting the enable
992 * count.
993 */
994 rc = pci_reenable_device(pdev);
995 if (rc)
996 dev_printk(KERN_ERR, &pdev->dev, "failed to enable "
997 "device after resume (%d)\n", rc);
998 } else
999 rc = ata_pci_device_do_resume(pdev);
1000
1001 if (rc == 0)
1002 ata_host_resume(host);
1003
1004 return rc;
1005 }
1006 #endif
1007
1008 #define AHCI_PCI_BAR 5
1009 #define AHCI_GLOBAL_CTL 0x04
1010 #define AHCI_ENABLE (1 << 31)
1011 static int piix_disable_ahci(struct pci_dev *pdev)
1012 {
1013 void __iomem *mmio;
1014 u32 tmp;
1015 int rc = 0;
1016
1017 /* BUG: pci_enable_device has not yet been called. This
1018 * works because this device is usually set up by BIOS.
1019 */
1020
1021 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1022 !pci_resource_len(pdev, AHCI_PCI_BAR))
1023 return 0;
1024
1025 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1026 if (!mmio)
1027 return -ENOMEM;
1028
1029 tmp = readl(mmio + AHCI_GLOBAL_CTL);
1030 if (tmp & AHCI_ENABLE) {
1031 tmp &= ~AHCI_ENABLE;
1032 writel(tmp, mmio + AHCI_GLOBAL_CTL);
1033
1034 tmp = readl(mmio + AHCI_GLOBAL_CTL);
1035 if (tmp & AHCI_ENABLE)
1036 rc = -EIO;
1037 }
1038
1039 pci_iounmap(pdev, mmio);
1040 return rc;
1041 }
1042
1043 /**
1044 * piix_check_450nx_errata - Check for problem 450NX setup
1045 * @ata_dev: the PCI device to check
1046 *
1047 * Check for the present of 450NX errata #19 and errata #25. If
1048 * they are found return an error code so we can turn off DMA
1049 */
1050
1051 static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev)
1052 {
1053 struct pci_dev *pdev = NULL;
1054 u16 cfg;
1055 int no_piix_dma = 0;
1056
1057 while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL)
1058 {
1059 /* Look for 450NX PXB. Check for problem configurations
1060 A PCI quirk checks bit 6 already */
1061 pci_read_config_word(pdev, 0x41, &cfg);
1062 /* Only on the original revision: IDE DMA can hang */
1063 if (pdev->revision == 0x00)
1064 no_piix_dma = 1;
1065 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1066 else if (cfg & (1<<14) && pdev->revision < 5)
1067 no_piix_dma = 2;
1068 }
1069 if (no_piix_dma)
1070 dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n");
1071 if (no_piix_dma == 2)
1072 dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n");
1073 return no_piix_dma;
1074 }
1075
1076 static void __devinit piix_init_pcs(struct pci_dev *pdev,
1077 struct ata_port_info *pinfo,
1078 const struct piix_map_db *map_db)
1079 {
1080 u16 pcs, new_pcs;
1081
1082 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1083
1084 new_pcs = pcs | map_db->port_enable;
1085
1086 if (new_pcs != pcs) {
1087 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1088 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1089 msleep(150);
1090 }
1091 }
1092
1093 static void __devinit piix_init_sata_map(struct pci_dev *pdev,
1094 struct ata_port_info *pinfo,
1095 const struct piix_map_db *map_db)
1096 {
1097 struct piix_host_priv *hpriv = pinfo[0].private_data;
1098 const unsigned int *map;
1099 int i, invalid_map = 0;
1100 u8 map_value;
1101
1102 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1103
1104 map = map_db->map[map_value & map_db->mask];
1105
1106 dev_printk(KERN_INFO, &pdev->dev, "MAP [");
1107 for (i = 0; i < 4; i++) {
1108 switch (map[i]) {
1109 case RV:
1110 invalid_map = 1;
1111 printk(" XX");
1112 break;
1113
1114 case NA:
1115 printk(" --");
1116 break;
1117
1118 case IDE:
1119 WARN_ON((i & 1) || map[i + 1] != IDE);
1120 pinfo[i / 2] = piix_port_info[ich_pata_100];
1121 pinfo[i / 2].private_data = hpriv;
1122 i++;
1123 printk(" IDE IDE");
1124 break;
1125
1126 default:
1127 printk(" P%d", map[i]);
1128 if (i & 1)
1129 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1130 break;
1131 }
1132 }
1133 printk(" ]\n");
1134
1135 if (invalid_map)
1136 dev_printk(KERN_ERR, &pdev->dev,
1137 "invalid MAP value %u\n", map_value);
1138
1139 hpriv->map = map;
1140 }
1141
1142 /**
1143 * piix_init_one - Register PIIX ATA PCI device with kernel services
1144 * @pdev: PCI device to register
1145 * @ent: Entry in piix_pci_tbl matching with @pdev
1146 *
1147 * Called from kernel PCI layer. We probe for combined mode (sigh),
1148 * and then hand over control to libata, for it to do the rest.
1149 *
1150 * LOCKING:
1151 * Inherited from PCI layer (may sleep).
1152 *
1153 * RETURNS:
1154 * Zero on success, or -ERRNO value.
1155 */
1156
1157 static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
1158 {
1159 static int printed_version;
1160 struct device *dev = &pdev->dev;
1161 struct ata_port_info port_info[2];
1162 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1163 struct piix_host_priv *hpriv;
1164 unsigned long port_flags;
1165
1166 if (!printed_version++)
1167 dev_printk(KERN_DEBUG, &pdev->dev,
1168 "version " DRV_VERSION "\n");
1169
1170 /* no hotplugging support (FIXME) */
1171 if (!in_module_init)
1172 return -ENODEV;
1173
1174 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1175 if (!hpriv)
1176 return -ENOMEM;
1177
1178 port_info[0] = piix_port_info[ent->driver_data];
1179 port_info[1] = piix_port_info[ent->driver_data];
1180 port_info[0].private_data = hpriv;
1181 port_info[1].private_data = hpriv;
1182
1183 port_flags = port_info[0].flags;
1184
1185 if (port_flags & PIIX_FLAG_AHCI) {
1186 u8 tmp;
1187 pci_read_config_byte(pdev, PIIX_SCC, &tmp);
1188 if (tmp == PIIX_AHCI_DEVICE) {
1189 int rc = piix_disable_ahci(pdev);
1190 if (rc)
1191 return rc;
1192 }
1193 }
1194
1195 /* Initialize SATA map */
1196 if (port_flags & ATA_FLAG_SATA) {
1197 piix_init_sata_map(pdev, port_info,
1198 piix_map_db_table[ent->driver_data]);
1199 piix_init_pcs(pdev, port_info,
1200 piix_map_db_table[ent->driver_data]);
1201 }
1202
1203 /* On ICH5, some BIOSen disable the interrupt using the
1204 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1205 * On ICH6, this bit has the same effect, but only when
1206 * MSI is disabled (and it is disabled, as we don't use
1207 * message-signalled interrupts currently).
1208 */
1209 if (port_flags & PIIX_FLAG_CHECKINTR)
1210 pci_intx(pdev, 1);
1211
1212 if (piix_check_450nx_errata(pdev)) {
1213 /* This writes into the master table but it does not
1214 really matter for this errata as we will apply it to
1215 all the PIIX devices on the board */
1216 port_info[0].mwdma_mask = 0;
1217 port_info[0].udma_mask = 0;
1218 port_info[1].mwdma_mask = 0;
1219 port_info[1].udma_mask = 0;
1220 }
1221 return ata_pci_init_one(pdev, ppi);
1222 }
1223
1224 static int __init piix_init(void)
1225 {
1226 int rc;
1227
1228 DPRINTK("pci_register_driver\n");
1229 rc = pci_register_driver(&piix_pci_driver);
1230 if (rc)
1231 return rc;
1232
1233 in_module_init = 0;
1234
1235 DPRINTK("done\n");
1236 return 0;
1237 }
1238
1239 static void __exit piix_exit(void)
1240 {
1241 pci_unregister_driver(&piix_pci_driver);
1242 }
1243
1244 module_init(piix_init);
1245 module_exit(piix_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree