2 * ata_piix.c - Intel PATA/SATA controllers
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
9 * Copyright 2003-2005 Red Hat Inc
10 * Copyright 2003-2005 Jeff Garzik
13 * Copyright header from piix.c:
15 * Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
16 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
17 * Copyright (C) 2003 Red Hat Inc
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2, or (at your option)
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
30 * You should have received a copy of the GNU General Public License
31 * along with this program; see the file COPYING. If not, write to
32 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
35 * libata documentation is available via 'make {ps|pdf}docs',
36 * as Documentation/DocBook/libata.*
38 * Hardware documentation available at http://developer.intel.com/
41 * Publicly available from Intel web site. Errata documentation
42 * is also publicly available. As an aide to anyone hacking on this
43 * driver the list of errata that are relevant is below, going back to
44 * PIIX4. Older device documentation is now a bit tricky to find.
46 * The chipsets all follow very much the same design. The original Triton
47 * series chipsets do _not_ support independent device timings, but this
48 * is fixed in Triton II. With the odd mobile exception the chips then
49 * change little except in gaining more modes until SATA arrives. This
50 * driver supports only the chips with independent timing (that is those
51 * with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix
52 * for the early chip drivers.
57 * PIIX4 errata #9 - Only on ultra obscure hw
58 * ICH3 errata #13 - Not observed to affect real hw
61 * Things we must deal with
62 * PIIX4 errata #10 - BM IDE hang with non UDMA
63 * (must stop/start dma to recover)
64 * 440MX errata #15 - As PIIX4 errata #10
65 * PIIX4 errata #15 - Must not read control registers
66 * during a PIO transfer
67 * 440MX errata #13 - As PIIX4 errata #15
68 * ICH2 errata #21 - DMA mode 0 doesn't work right
69 * ICH0/1 errata #55 - As ICH2 errata #21
70 * ICH2 spec c #9 - Extra operations needed to handle
71 * drive hotswap [NOT YET SUPPORTED]
72 * ICH2 spec c #20 - IDE PRD must not cross a 64K boundary
73 * and must be dword aligned
74 * ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3
75 * ICH7 errata #16 - MWDMA1 timings are incorrect
77 * Should have been BIOS fixed:
78 * 450NX: errata #19 - DMA hangs on old 450NX
79 * 450NX: errata #20 - DMA hangs on old 450NX
80 * 450NX: errata #25 - Corruption with DMA on old 450NX
81 * ICH3 errata #15 - IDE deadlock under high load
82 * (BIOS must set dev 31 fn 0 bit 23)
83 * ICH3 errata #18 - Don't use native mode
86 #include <linux/kernel.h>
87 #include <linux/module.h>
88 #include <linux/pci.h>
89 #include <linux/init.h>
90 #include <linux/blkdev.h>
91 #include <linux/delay.h>
92 #include <linux/device.h>
93 #include <linux/gfp.h>
94 #include <scsi/scsi_host.h>
95 #include <linux/libata.h>
96 #include <linux/dmi.h>
98 #define DRV_NAME "ata_piix"
99 #define DRV_VERSION "2.13"
102 PIIX_IOCFG
= 0x54, /* IDE I/O configuration register */
103 ICH5_PMR
= 0x90, /* port mapping register */
104 ICH5_PCS
= 0x92, /* port control and status */
110 PIIX_FLAG_CHECKINTR
= (1 << 28), /* make sure PCI INTx enabled */
111 PIIX_FLAG_SIDPR
= (1 << 29), /* SATA idx/data pair regs */
113 PIIX_PATA_FLAGS
= ATA_FLAG_SLAVE_POSS
,
114 PIIX_SATA_FLAGS
= ATA_FLAG_SATA
| PIIX_FLAG_CHECKINTR
,
116 PIIX_FLAG_PIO16
= (1 << 30), /*support 16bit PIO only*/
118 PIIX_80C_PRI
= (1 << 5) | (1 << 4),
119 PIIX_80C_SEC
= (1 << 7) | (1 << 6),
121 /* constants for mapping table */
127 NA
= -2, /* not available */
128 RV
= -3, /* reserved */
130 PIIX_AHCI_DEVICE
= 6,
132 /* host->flags bits */
133 PIIX_HOST_BROKEN_SUSPEND
= (1 << 24),
136 enum piix_controller_ids
{
138 piix_pata_mwdma
, /* PIIX3 MWDMA only */
139 piix_pata_33
, /* PIIX4 at 33Mhz */
140 ich_pata_33
, /* ICH up to UDMA 33 only */
141 ich_pata_66
, /* ICH up to 66 Mhz */
142 ich_pata_100
, /* ICH up to UDMA 100 */
143 ich_pata_100_nomwdma1
, /* ICH up to UDMA 100 but with no MWDMA1*/
149 ich8m_apple_sata
, /* locks up on second port enable */
151 piix_pata_vmw
, /* PIIX4 for VMware, spurious DMA_ERR */
157 const u16 port_enable
;
161 struct piix_host_priv
{
167 static int piix_init_one(struct pci_dev
*pdev
,
168 const struct pci_device_id
*ent
);
169 static void piix_remove_one(struct pci_dev
*pdev
);
170 static int piix_pata_prereset(struct ata_link
*link
, unsigned long deadline
);
171 static void piix_set_piomode(struct ata_port
*ap
, struct ata_device
*adev
);
172 static void piix_set_dmamode(struct ata_port
*ap
, struct ata_device
*adev
);
173 static void ich_set_dmamode(struct ata_port
*ap
, struct ata_device
*adev
);
174 static int ich_pata_cable_detect(struct ata_port
*ap
);
175 static u8
piix_vmw_bmdma_status(struct ata_port
*ap
);
176 static int piix_sidpr_scr_read(struct ata_link
*link
,
177 unsigned int reg
, u32
*val
);
178 static int piix_sidpr_scr_write(struct ata_link
*link
,
179 unsigned int reg
, u32 val
);
180 static int piix_sidpr_set_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
182 static bool piix_irq_check(struct ata_port
*ap
);
183 static int piix_port_start(struct ata_port
*ap
);
185 static int piix_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
);
186 static int piix_pci_device_resume(struct pci_dev
*pdev
);
189 static unsigned int in_module_init
= 1;
191 static const struct pci_device_id piix_pci_tbl
[] = {
192 /* Intel PIIX3 for the 430HX etc */
193 { 0x8086, 0x7010, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, piix_pata_mwdma
},
195 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw
},
196 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
197 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
198 { 0x8086, 0x7111, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, piix_pata_33
},
200 { 0x8086, 0x7199, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, piix_pata_33
},
202 { 0x8086, 0x7601, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, piix_pata_33
},
204 { 0x8086, 0x84CA, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, piix_pata_33
},
205 /* Intel ICH (i810, i815, i840) UDMA 66*/
206 { 0x8086, 0x2411, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_66
},
207 /* Intel ICH0 : UDMA 33*/
208 { 0x8086, 0x2421, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_33
},
210 { 0x8086, 0x244A, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
211 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
212 { 0x8086, 0x244B, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
214 { 0x8086, 0x248A, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
215 /* Intel ICH3 (E7500/1) UDMA 100 */
216 { 0x8086, 0x248B, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
218 { 0x8086, 0x24C1, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
219 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
220 { 0x8086, 0x24CA, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
221 { 0x8086, 0x24CB, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
223 { 0x8086, 0x24DB, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
225 { 0x8086, 0x245B, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
226 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
227 { 0x8086, 0x25A2, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
228 /* ICH6 (and 6) (i915) UDMA 100 */
229 { 0x8086, 0x266F, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
230 /* ICH7/7-R (i945, i975) UDMA 100*/
231 { 0x8086, 0x27DF, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100_nomwdma1
},
232 { 0x8086, 0x269E, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100_nomwdma1
},
233 /* ICH8 Mobile PATA Controller */
234 { 0x8086, 0x2850, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich_pata_100
},
239 { 0x8086, 0x24d1, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich5_sata
},
241 { 0x8086, 0x24df, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich5_sata
},
242 /* 6300ESB (ICH5 variant with broken PCS present bits) */
243 { 0x8086, 0x25a3, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich5_sata
},
244 /* 6300ESB pretending RAID */
245 { 0x8086, 0x25b0, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich5_sata
},
246 /* 82801FB/FW (ICH6/ICH6W) */
247 { 0x8086, 0x2651, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich6_sata
},
248 /* 82801FR/FRW (ICH6R/ICH6RW) */
249 { 0x8086, 0x2652, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich6_sata
},
250 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
251 * Attach iff the controller is in IDE mode. */
252 { 0x8086, 0x2653, PCI_ANY_ID
, PCI_ANY_ID
,
253 PCI_CLASS_STORAGE_IDE
<< 8, 0xffff00, ich6m_sata
},
254 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
255 { 0x8086, 0x27c0, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich6_sata
},
256 /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
257 { 0x8086, 0x27c4, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich6m_sata
},
258 /* Enterprise Southbridge 2 (631xESB/632xESB) */
259 { 0x8086, 0x2680, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich6_sata
},
260 /* SATA Controller 1 IDE (ICH8) */
261 { 0x8086, 0x2820, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
262 /* SATA Controller 2 IDE (ICH8) */
263 { 0x8086, 0x2825, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
264 /* Mobile SATA Controller IDE (ICH8M), Apple */
265 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata
},
266 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata
},
267 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata
},
268 /* Mobile SATA Controller IDE (ICH8M) */
269 { 0x8086, 0x2828, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
270 /* SATA Controller IDE (ICH9) */
271 { 0x8086, 0x2920, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
272 /* SATA Controller IDE (ICH9) */
273 { 0x8086, 0x2921, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
274 /* SATA Controller IDE (ICH9) */
275 { 0x8086, 0x2926, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
276 /* SATA Controller IDE (ICH9M) */
277 { 0x8086, 0x2928, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
278 /* SATA Controller IDE (ICH9M) */
279 { 0x8086, 0x292d, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
280 /* SATA Controller IDE (ICH9M) */
281 { 0x8086, 0x292e, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
282 /* SATA Controller IDE (Tolapai) */
283 { 0x8086, 0x5028, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, tolapai_sata
},
284 /* SATA Controller IDE (ICH10) */
285 { 0x8086, 0x3a00, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
286 /* SATA Controller IDE (ICH10) */
287 { 0x8086, 0x3a06, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
288 /* SATA Controller IDE (ICH10) */
289 { 0x8086, 0x3a20, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
290 /* SATA Controller IDE (ICH10) */
291 { 0x8086, 0x3a26, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
292 /* SATA Controller IDE (PCH) */
293 { 0x8086, 0x3b20, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
294 /* SATA Controller IDE (PCH) */
295 { 0x8086, 0x3b21, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
296 /* SATA Controller IDE (PCH) */
297 { 0x8086, 0x3b26, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
298 /* SATA Controller IDE (PCH) */
299 { 0x8086, 0x3b28, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
300 /* SATA Controller IDE (PCH) */
301 { 0x8086, 0x3b2d, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
302 /* SATA Controller IDE (PCH) */
303 { 0x8086, 0x3b2e, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata
},
304 /* SATA Controller IDE (CPT) */
305 { 0x8086, 0x1c00, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata_snb
},
306 /* SATA Controller IDE (CPT) */
307 { 0x8086, 0x1c01, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata_snb
},
308 /* SATA Controller IDE (CPT) */
309 { 0x8086, 0x1c08, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
310 /* SATA Controller IDE (CPT) */
311 { 0x8086, 0x1c09, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
312 /* SATA Controller IDE (PBG) */
313 { 0x8086, 0x1d00, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata_snb
},
314 /* SATA Controller IDE (PBG) */
315 { 0x8086, 0x1d08, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
316 /* SATA Controller IDE (Panther Point) */
317 { 0x8086, 0x1e00, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata_snb
},
318 /* SATA Controller IDE (Panther Point) */
319 { 0x8086, 0x1e01, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_sata_snb
},
320 /* SATA Controller IDE (Panther Point) */
321 { 0x8086, 0x1e08, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
322 /* SATA Controller IDE (Panther Point) */
323 { 0x8086, 0x1e09, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, ich8_2port_sata
},
324 { } /* terminate list */
327 static struct pci_driver piix_pci_driver
= {
329 .id_table
= piix_pci_tbl
,
330 .probe
= piix_init_one
,
331 .remove
= piix_remove_one
,
333 .suspend
= piix_pci_device_suspend
,
334 .resume
= piix_pci_device_resume
,
338 static struct scsi_host_template piix_sht
= {
339 ATA_BMDMA_SHT(DRV_NAME
),
342 static struct ata_port_operations piix_sata_ops
= {
343 .inherits
= &ata_bmdma32_port_ops
,
344 .sff_irq_check
= piix_irq_check
,
345 .port_start
= piix_port_start
,
348 static struct ata_port_operations piix_pata_ops
= {
349 .inherits
= &piix_sata_ops
,
350 .cable_detect
= ata_cable_40wire
,
351 .set_piomode
= piix_set_piomode
,
352 .set_dmamode
= piix_set_dmamode
,
353 .prereset
= piix_pata_prereset
,
356 static struct ata_port_operations piix_vmw_ops
= {
357 .inherits
= &piix_pata_ops
,
358 .bmdma_status
= piix_vmw_bmdma_status
,
361 static struct ata_port_operations ich_pata_ops
= {
362 .inherits
= &piix_pata_ops
,
363 .cable_detect
= ich_pata_cable_detect
,
364 .set_dmamode
= ich_set_dmamode
,
367 static struct device_attribute
*piix_sidpr_shost_attrs
[] = {
368 &dev_attr_link_power_management_policy
,
372 static struct scsi_host_template piix_sidpr_sht
= {
373 ATA_BMDMA_SHT(DRV_NAME
),
374 .shost_attrs
= piix_sidpr_shost_attrs
,
377 static struct ata_port_operations piix_sidpr_sata_ops
= {
378 .inherits
= &piix_sata_ops
,
379 .hardreset
= sata_std_hardreset
,
380 .scr_read
= piix_sidpr_scr_read
,
381 .scr_write
= piix_sidpr_scr_write
,
382 .set_lpm
= piix_sidpr_set_lpm
,
385 static const struct piix_map_db ich5_map_db
= {
389 /* PM PS SM SS MAP */
390 { P0
, NA
, P1
, NA
}, /* 000b */
391 { P1
, NA
, P0
, NA
}, /* 001b */
394 { P0
, P1
, IDE
, IDE
}, /* 100b */
395 { P1
, P0
, IDE
, IDE
}, /* 101b */
396 { IDE
, IDE
, P0
, P1
}, /* 110b */
397 { IDE
, IDE
, P1
, P0
}, /* 111b */
401 static const struct piix_map_db ich6_map_db
= {
405 /* PM PS SM SS MAP */
406 { P0
, P2
, P1
, P3
}, /* 00b */
407 { IDE
, IDE
, P1
, P3
}, /* 01b */
408 { P0
, P2
, IDE
, IDE
}, /* 10b */
413 static const struct piix_map_db ich6m_map_db
= {
417 /* Map 01b isn't specified in the doc but some notebooks use
418 * it anyway. MAP 01b have been spotted on both ICH6M and
422 /* PM PS SM SS MAP */
423 { P0
, P2
, NA
, NA
}, /* 00b */
424 { IDE
, IDE
, P1
, P3
}, /* 01b */
425 { P0
, P2
, IDE
, IDE
}, /* 10b */
430 static const struct piix_map_db ich8_map_db
= {
434 /* PM PS SM SS MAP */
435 { P0
, P2
, P1
, P3
}, /* 00b (hardwired when in AHCI) */
437 { P0
, P2
, IDE
, IDE
}, /* 10b (IDE mode) */
442 static const struct piix_map_db ich8_2port_map_db
= {
446 /* PM PS SM SS MAP */
447 { P0
, NA
, P1
, NA
}, /* 00b */
448 { RV
, RV
, RV
, RV
}, /* 01b */
449 { RV
, RV
, RV
, RV
}, /* 10b */
454 static const struct piix_map_db ich8m_apple_map_db
= {
458 /* PM PS SM SS MAP */
459 { P0
, NA
, NA
, NA
}, /* 00b */
461 { P0
, P2
, IDE
, IDE
}, /* 10b */
466 static const struct piix_map_db tolapai_map_db
= {
470 /* PM PS SM SS MAP */
471 { P0
, NA
, P1
, NA
}, /* 00b */
472 { RV
, RV
, RV
, RV
}, /* 01b */
473 { RV
, RV
, RV
, RV
}, /* 10b */
478 static const struct piix_map_db
*piix_map_db_table
[] = {
479 [ich5_sata
] = &ich5_map_db
,
480 [ich6_sata
] = &ich6_map_db
,
481 [ich6m_sata
] = &ich6m_map_db
,
482 [ich8_sata
] = &ich8_map_db
,
483 [ich8_2port_sata
] = &ich8_2port_map_db
,
484 [ich8m_apple_sata
] = &ich8m_apple_map_db
,
485 [tolapai_sata
] = &tolapai_map_db
,
486 [ich8_sata_snb
] = &ich8_map_db
,
489 static struct ata_port_info piix_port_info
[] = {
490 [piix_pata_mwdma
] = /* PIIX3 MWDMA only */
492 .flags
= PIIX_PATA_FLAGS
,
493 .pio_mask
= ATA_PIO4
,
494 .mwdma_mask
= ATA_MWDMA12_ONLY
, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
495 .port_ops
= &piix_pata_ops
,
498 [piix_pata_33
] = /* PIIX4 at 33MHz */
500 .flags
= PIIX_PATA_FLAGS
,
501 .pio_mask
= ATA_PIO4
,
502 .mwdma_mask
= ATA_MWDMA12_ONLY
, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
503 .udma_mask
= ATA_UDMA2
,
504 .port_ops
= &piix_pata_ops
,
507 [ich_pata_33
] = /* ICH0 - ICH at 33Mhz*/
509 .flags
= PIIX_PATA_FLAGS
,
510 .pio_mask
= ATA_PIO4
,
511 .mwdma_mask
= ATA_MWDMA12_ONLY
, /* Check: maybe MWDMA0 is ok */
512 .udma_mask
= ATA_UDMA2
,
513 .port_ops
= &ich_pata_ops
,
516 [ich_pata_66
] = /* ICH controllers up to 66MHz */
518 .flags
= PIIX_PATA_FLAGS
,
519 .pio_mask
= ATA_PIO4
,
520 .mwdma_mask
= ATA_MWDMA12_ONLY
, /* MWDMA0 is broken on chip */
521 .udma_mask
= ATA_UDMA4
,
522 .port_ops
= &ich_pata_ops
,
527 .flags
= PIIX_PATA_FLAGS
| PIIX_FLAG_CHECKINTR
,
528 .pio_mask
= ATA_PIO4
,
529 .mwdma_mask
= ATA_MWDMA12_ONLY
,
530 .udma_mask
= ATA_UDMA5
,
531 .port_ops
= &ich_pata_ops
,
534 [ich_pata_100_nomwdma1
] =
536 .flags
= PIIX_PATA_FLAGS
| PIIX_FLAG_CHECKINTR
,
537 .pio_mask
= ATA_PIO4
,
538 .mwdma_mask
= ATA_MWDMA2_ONLY
,
539 .udma_mask
= ATA_UDMA5
,
540 .port_ops
= &ich_pata_ops
,
545 .flags
= PIIX_SATA_FLAGS
,
546 .pio_mask
= ATA_PIO4
,
547 .mwdma_mask
= ATA_MWDMA2
,
548 .udma_mask
= ATA_UDMA6
,
549 .port_ops
= &piix_sata_ops
,
554 .flags
= PIIX_SATA_FLAGS
,
555 .pio_mask
= ATA_PIO4
,
556 .mwdma_mask
= ATA_MWDMA2
,
557 .udma_mask
= ATA_UDMA6
,
558 .port_ops
= &piix_sata_ops
,
563 .flags
= PIIX_SATA_FLAGS
,
564 .pio_mask
= ATA_PIO4
,
565 .mwdma_mask
= ATA_MWDMA2
,
566 .udma_mask
= ATA_UDMA6
,
567 .port_ops
= &piix_sata_ops
,
572 .flags
= PIIX_SATA_FLAGS
| PIIX_FLAG_SIDPR
,
573 .pio_mask
= ATA_PIO4
,
574 .mwdma_mask
= ATA_MWDMA2
,
575 .udma_mask
= ATA_UDMA6
,
576 .port_ops
= &piix_sata_ops
,
581 .flags
= PIIX_SATA_FLAGS
| PIIX_FLAG_SIDPR
,
582 .pio_mask
= ATA_PIO4
,
583 .mwdma_mask
= ATA_MWDMA2
,
584 .udma_mask
= ATA_UDMA6
,
585 .port_ops
= &piix_sata_ops
,
590 .flags
= PIIX_SATA_FLAGS
,
591 .pio_mask
= ATA_PIO4
,
592 .mwdma_mask
= ATA_MWDMA2
,
593 .udma_mask
= ATA_UDMA6
,
594 .port_ops
= &piix_sata_ops
,
599 .flags
= PIIX_SATA_FLAGS
,
600 .pio_mask
= ATA_PIO4
,
601 .mwdma_mask
= ATA_MWDMA2
,
602 .udma_mask
= ATA_UDMA6
,
603 .port_ops
= &piix_sata_ops
,
608 .flags
= PIIX_PATA_FLAGS
,
609 .pio_mask
= ATA_PIO4
,
610 .mwdma_mask
= ATA_MWDMA12_ONLY
, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
611 .udma_mask
= ATA_UDMA2
,
612 .port_ops
= &piix_vmw_ops
,
616 * some Sandybridge chipsets have broken 32 mode up to now,
617 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592
621 .flags
= PIIX_SATA_FLAGS
| PIIX_FLAG_SIDPR
| PIIX_FLAG_PIO16
,
622 .pio_mask
= ATA_PIO4
,
623 .mwdma_mask
= ATA_MWDMA2
,
624 .udma_mask
= ATA_UDMA6
,
625 .port_ops
= &piix_sata_ops
,
630 static struct pci_bits piix_enable_bits
[] = {
631 { 0x41U
, 1U, 0x80UL
, 0x80UL
}, /* port 0 */
632 { 0x43U
, 1U, 0x80UL
, 0x80UL
}, /* port 1 */
635 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
636 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
637 MODULE_LICENSE("GPL");
638 MODULE_DEVICE_TABLE(pci
, piix_pci_tbl
);
639 MODULE_VERSION(DRV_VERSION
);
648 * List of laptops that use short cables rather than 80 wire
651 static const struct ich_laptop ich_laptop
[] = {
652 /* devid, subvendor, subdev */
653 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
654 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
655 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
656 { 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */
657 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
658 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
659 { 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */
660 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
661 { 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */
662 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
663 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
664 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
665 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
666 { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */
671 static int piix_port_start(struct ata_port
*ap
)
673 if (!(ap
->flags
& PIIX_FLAG_PIO16
))
674 ap
->pflags
|= ATA_PFLAG_PIO32
| ATA_PFLAG_PIO32CHANGE
;
676 return ata_bmdma_port_start(ap
);
680 * ich_pata_cable_detect - Probe host controller cable detect info
681 * @ap: Port for which cable detect info is desired
683 * Read 80c cable indicator from ATA PCI device's PCI config
684 * register. This register is normally set by firmware (BIOS).
687 * None (inherited from caller).
690 static int ich_pata_cable_detect(struct ata_port
*ap
)
692 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
693 struct piix_host_priv
*hpriv
= ap
->host
->private_data
;
694 const struct ich_laptop
*lap
= &ich_laptop
[0];
697 /* Check for specials - Acer Aspire 5602WLMi */
698 while (lap
->device
) {
699 if (lap
->device
== pdev
->device
&&
700 lap
->subvendor
== pdev
->subsystem_vendor
&&
701 lap
->subdevice
== pdev
->subsystem_device
)
702 return ATA_CBL_PATA40_SHORT
;
707 /* check BIOS cable detect results */
708 mask
= ap
->port_no
== 0 ? PIIX_80C_PRI
: PIIX_80C_SEC
;
709 if ((hpriv
->saved_iocfg
& mask
) == 0)
710 return ATA_CBL_PATA40
;
711 return ATA_CBL_PATA80
;
715 * piix_pata_prereset - prereset for PATA host controller
717 * @deadline: deadline jiffies for the operation
720 * None (inherited from caller).
722 static int piix_pata_prereset(struct ata_link
*link
, unsigned long deadline
)
724 struct ata_port
*ap
= link
->ap
;
725 struct pci_dev
*pdev
= to_pci_dev(ap
->host
->dev
);
727 if (!pci_test_config_bits(pdev
, &piix_enable_bits
[ap
->port_no
]))
729 return ata_sff_prereset(link
, deadline
);
732 static DEFINE_SPINLOCK(piix_lock
);
734 static void piix_set_timings(struct ata_port
*ap
, struct ata_device
*adev
,
737 struct pci_dev
*dev
= to_pci_dev(ap
->host
->dev
);
739 unsigned int is_slave
= (adev
->devno
!= 0);
740 unsigned int master_port
= ap
->port_no
? 0x42 : 0x40;
741 unsigned int slave_port
= 0x44;
748 * See Intel Document 298600-004 for the timing programing rules
749 * for ICH controllers.
752 static const /* ISP RTC */
753 u8 timings
[][2] = { { 0, 0 },
760 control
|= 1; /* TIME1 enable */
761 if (ata_pio_need_iordy(adev
))
762 control
|= 2; /* IE enable */
763 /* Intel specifies that the PPE functionality is for disk only */
764 if (adev
->class == ATA_DEV_ATA
)
765 control
|= 4; /* PPE enable */
767 * If the drive MWDMA is faster than it can do PIO then
768 * we must force PIO into PIO0
770 if (adev
->pio_mode
< XFER_PIO_0
+ pio
)
771 /* Enable DMA timing only */
772 control
|= 8; /* PIO cycles in PIO0 */
774 spin_lock_irqsave(&piix_lock
, flags
);
776 /* PIO configuration clears DTE unconditionally. It will be
777 * programmed in set_dmamode which is guaranteed to be called
778 * after set_piomode if any DMA mode is available.
780 pci_read_config_word(dev
, master_port
, &master_data
);
782 /* clear TIME1|IE1|PPE1|DTE1 */
783 master_data
&= 0xff0f;
784 /* enable PPE1, IE1 and TIME1 as needed */
785 master_data
|= (control
<< 4);
786 pci_read_config_byte(dev
, slave_port
, &slave_data
);
787 slave_data
&= (ap
->port_no
? 0x0f : 0xf0);
788 /* Load the timing nibble for this slave */
789 slave_data
|= ((timings
[pio
][0] << 2) | timings
[pio
][1])
790 << (ap
->port_no
? 4 : 0);
792 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
793 master_data
&= 0xccf0;
794 /* Enable PPE, IE and TIME as appropriate */
795 master_data
|= control
;
796 /* load ISP and RCT */
798 (timings
[pio
][0] << 12) |
799 (timings
[pio
][1] << 8);
802 /* Enable SITRE (separate slave timing register) */
803 master_data
|= 0x4000;
804 pci_write_config_word(dev
, master_port
, master_data
);
806 pci_write_config_byte(dev
, slave_port
, slave_data
);
808 /* Ensure the UDMA bit is off - it will be turned back on if
812 pci_read_config_byte(dev
, 0x48, &udma_enable
);
813 udma_enable
&= ~(1 << (2 * ap
->port_no
+ adev
->devno
));
814 pci_write_config_byte(dev
, 0x48, udma_enable
);
817 spin_unlock_irqrestore(&piix_lock
, flags
);
821 * piix_set_piomode - Initialize host controller PATA PIO timings
822 * @ap: Port whose timings we are configuring
823 * @adev: Drive in question
825 * Set PIO mode for device, in host controller PCI config space.
828 * None (inherited from caller).
831 static void piix_set_piomode(struct ata_port
*ap
, struct ata_device
*adev
)
833 piix_set_timings(ap
, adev
, adev
->pio_mode
- XFER_PIO_0
);
837 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
838 * @ap: Port whose timings we are configuring
839 * @adev: Drive in question
840 * @isich: set if the chip is an ICH device
842 * Set UDMA mode for device, in host controller PCI config space.
845 * None (inherited from caller).
848 static void do_pata_set_dmamode(struct ata_port
*ap
, struct ata_device
*adev
, int isich
)
850 struct pci_dev
*dev
= to_pci_dev(ap
->host
->dev
);
852 u8 speed
= adev
->dma_mode
;
853 int devid
= adev
->devno
+ 2 * ap
->port_no
;
856 if (speed
>= XFER_UDMA_0
) {
857 unsigned int udma
= speed
- XFER_UDMA_0
;
860 int u_clock
, u_speed
;
862 spin_lock_irqsave(&piix_lock
, flags
);
864 pci_read_config_byte(dev
, 0x48, &udma_enable
);
867 * UDMA is handled by a combination of clock switching and
868 * selection of dividers
870 * Handy rule: Odd modes are UDMATIMx 01, even are 02
871 * except UDMA0 which is 00
873 u_speed
= min(2 - (udma
& 1), udma
);
875 u_clock
= 0x1000; /* 100Mhz */
877 u_clock
= 1; /* 66Mhz */
879 u_clock
= 0; /* 33Mhz */
881 udma_enable
|= (1 << devid
);
883 /* Load the CT/RP selection */
884 pci_read_config_word(dev
, 0x4A, &udma_timing
);
885 udma_timing
&= ~(3 << (4 * devid
));
886 udma_timing
|= u_speed
<< (4 * devid
);
887 pci_write_config_word(dev
, 0x4A, udma_timing
);
890 /* Select a 33/66/100Mhz clock */
891 pci_read_config_word(dev
, 0x54, &ideconf
);
892 ideconf
&= ~(0x1001 << devid
);
893 ideconf
|= u_clock
<< devid
;
894 /* For ICH or later we should set bit 10 for better
895 performance (WR_PingPong_En) */
896 pci_write_config_word(dev
, 0x54, ideconf
);
899 pci_write_config_byte(dev
, 0x48, udma_enable
);
901 spin_unlock_irqrestore(&piix_lock
, flags
);
903 /* MWDMA is driven by the PIO timings. */
904 unsigned int mwdma
= speed
- XFER_MW_DMA_0
;
905 const unsigned int needed_pio
[3] = {
906 XFER_PIO_0
, XFER_PIO_3
, XFER_PIO_4
908 int pio
= needed_pio
[mwdma
] - XFER_PIO_0
;
910 /* XFER_PIO_0 is never used currently */
911 piix_set_timings(ap
, adev
, pio
);
916 * piix_set_dmamode - Initialize host controller PATA DMA timings
917 * @ap: Port whose timings we are configuring
920 * Set MW/UDMA mode for device, in host controller PCI config space.
923 * None (inherited from caller).
926 static void piix_set_dmamode(struct ata_port
*ap
, struct ata_device
*adev
)
928 do_pata_set_dmamode(ap
, adev
, 0);
932 * ich_set_dmamode - Initialize host controller PATA DMA timings
933 * @ap: Port whose timings we are configuring
936 * Set MW/UDMA mode for device, in host controller PCI config space.
939 * None (inherited from caller).
942 static void ich_set_dmamode(struct ata_port
*ap
, struct ata_device
*adev
)
944 do_pata_set_dmamode(ap
, adev
, 1);
948 * Serial ATA Index/Data Pair Superset Registers access
950 * Beginning from ICH8, there's a sane way to access SCRs using index
951 * and data register pair located at BAR5 which means that we have
952 * separate SCRs for master and slave. This is handled using libata
953 * slave_link facility.
955 static const int piix_sidx_map
[] = {
961 static void piix_sidpr_sel(struct ata_link
*link
, unsigned int reg
)
963 struct ata_port
*ap
= link
->ap
;
964 struct piix_host_priv
*hpriv
= ap
->host
->private_data
;
966 iowrite32(((ap
->port_no
* 2 + link
->pmp
) << 8) | piix_sidx_map
[reg
],
967 hpriv
->sidpr
+ PIIX_SIDPR_IDX
);
970 static int piix_sidpr_scr_read(struct ata_link
*link
,
971 unsigned int reg
, u32
*val
)
973 struct piix_host_priv
*hpriv
= link
->ap
->host
->private_data
;
975 if (reg
>= ARRAY_SIZE(piix_sidx_map
))
978 piix_sidpr_sel(link
, reg
);
979 *val
= ioread32(hpriv
->sidpr
+ PIIX_SIDPR_DATA
);
983 static int piix_sidpr_scr_write(struct ata_link
*link
,
984 unsigned int reg
, u32 val
)
986 struct piix_host_priv
*hpriv
= link
->ap
->host
->private_data
;
988 if (reg
>= ARRAY_SIZE(piix_sidx_map
))
991 piix_sidpr_sel(link
, reg
);
992 iowrite32(val
, hpriv
->sidpr
+ PIIX_SIDPR_DATA
);
996 static int piix_sidpr_set_lpm(struct ata_link
*link
, enum ata_lpm_policy policy
,
999 return sata_link_scr_lpm(link
, policy
, false);
1002 static bool piix_irq_check(struct ata_port
*ap
)
1004 if (unlikely(!ap
->ioaddr
.bmdma_addr
))
1007 return ap
->ops
->bmdma_status(ap
) & ATA_DMA_INTR
;
1011 static int piix_broken_suspend(void)
1013 static const struct dmi_system_id sysids
[] = {
1015 .ident
= "TECRA M3",
1017 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1018 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA M3"),
1022 .ident
= "TECRA M3",
1024 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1025 DMI_MATCH(DMI_PRODUCT_NAME
, "Tecra M3"),
1029 .ident
= "TECRA M4",
1031 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1032 DMI_MATCH(DMI_PRODUCT_NAME
, "Tecra M4"),
1036 .ident
= "TECRA M4",
1038 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1039 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA M4"),
1043 .ident
= "TECRA M5",
1045 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1046 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA M5"),
1050 .ident
= "TECRA M6",
1052 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1053 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA M6"),
1057 .ident
= "TECRA M7",
1059 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1060 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA M7"),
1064 .ident
= "TECRA A8",
1066 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1067 DMI_MATCH(DMI_PRODUCT_NAME
, "TECRA A8"),
1071 .ident
= "Satellite R20",
1073 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1074 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite R20"),
1078 .ident
= "Satellite R25",
1080 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1081 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite R25"),
1085 .ident
= "Satellite U200",
1087 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1088 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite U200"),
1092 .ident
= "Satellite U200",
1094 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1095 DMI_MATCH(DMI_PRODUCT_NAME
, "SATELLITE U200"),
1099 .ident
= "Satellite Pro U200",
1101 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1102 DMI_MATCH(DMI_PRODUCT_NAME
, "SATELLITE PRO U200"),
1106 .ident
= "Satellite U205",
1108 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1109 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite U205"),
1113 .ident
= "SATELLITE U205",
1115 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1116 DMI_MATCH(DMI_PRODUCT_NAME
, "SATELLITE U205"),
1120 .ident
= "Satellite Pro A120",
1122 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1123 DMI_MATCH(DMI_PRODUCT_NAME
, "Satellite Pro A120"),
1127 .ident
= "Portege M500",
1129 DMI_MATCH(DMI_SYS_VENDOR
, "TOSHIBA"),
1130 DMI_MATCH(DMI_PRODUCT_NAME
, "PORTEGE M500"),
1134 .ident
= "VGN-BX297XP",
1136 DMI_MATCH(DMI_SYS_VENDOR
, "Sony Corporation"),
1137 DMI_MATCH(DMI_PRODUCT_NAME
, "VGN-BX297XP"),
1141 { } /* terminate list */
1143 static const char *oemstrs
[] = {
1148 if (dmi_check_system(sysids
))
1151 for (i
= 0; i
< ARRAY_SIZE(oemstrs
); i
++)
1152 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING
, oemstrs
[i
], NULL
))
1155 /* TECRA M4 sometimes forgets its identify and reports bogus
1156 * DMI information. As the bogus information is a bit
1157 * generic, match as many entries as possible. This manual
1158 * matching is necessary because dmi_system_id.matches is
1159 * limited to four entries.
1161 if (dmi_match(DMI_SYS_VENDOR
, "TOSHIBA") &&
1162 dmi_match(DMI_PRODUCT_NAME
, "000000") &&
1163 dmi_match(DMI_PRODUCT_VERSION
, "000000") &&
1164 dmi_match(DMI_PRODUCT_SERIAL
, "000000") &&
1165 dmi_match(DMI_BOARD_VENDOR
, "TOSHIBA") &&
1166 dmi_match(DMI_BOARD_NAME
, "Portable PC") &&
1167 dmi_match(DMI_BOARD_VERSION
, "Version A0"))
1173 static int piix_pci_device_suspend(struct pci_dev
*pdev
, pm_message_t mesg
)
1175 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
1176 unsigned long flags
;
1179 rc
= ata_host_suspend(host
, mesg
);
1183 /* Some braindamaged ACPI suspend implementations expect the
1184 * controller to be awake on entry; otherwise, it burns cpu
1185 * cycles and power trying to do something to the sleeping
1188 if (piix_broken_suspend() && (mesg
.event
& PM_EVENT_SLEEP
)) {
1189 pci_save_state(pdev
);
1191 /* mark its power state as "unknown", since we don't
1192 * know if e.g. the BIOS will change its device state
1195 if (pdev
->current_state
== PCI_D0
)
1196 pdev
->current_state
= PCI_UNKNOWN
;
1198 /* tell resume that it's waking up from broken suspend */
1199 spin_lock_irqsave(&host
->lock
, flags
);
1200 host
->flags
|= PIIX_HOST_BROKEN_SUSPEND
;
1201 spin_unlock_irqrestore(&host
->lock
, flags
);
1203 ata_pci_device_do_suspend(pdev
, mesg
);
1208 static int piix_pci_device_resume(struct pci_dev
*pdev
)
1210 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
1211 unsigned long flags
;
1214 if (host
->flags
& PIIX_HOST_BROKEN_SUSPEND
) {
1215 spin_lock_irqsave(&host
->lock
, flags
);
1216 host
->flags
&= ~PIIX_HOST_BROKEN_SUSPEND
;
1217 spin_unlock_irqrestore(&host
->lock
, flags
);
1219 pci_set_power_state(pdev
, PCI_D0
);
1220 pci_restore_state(pdev
);
1222 /* PCI device wasn't disabled during suspend. Use
1223 * pci_reenable_device() to avoid affecting the enable
1226 rc
= pci_reenable_device(pdev
);
1229 "failed to enable device after resume (%d)\n",
1232 rc
= ata_pci_device_do_resume(pdev
);
1235 ata_host_resume(host
);
1241 static u8
piix_vmw_bmdma_status(struct ata_port
*ap
)
1243 return ata_bmdma_status(ap
) & ~ATA_DMA_ERR
;
1246 #define AHCI_PCI_BAR 5
1247 #define AHCI_GLOBAL_CTL 0x04
1248 #define AHCI_ENABLE (1 << 31)
1249 static int piix_disable_ahci(struct pci_dev
*pdev
)
1255 /* BUG: pci_enable_device has not yet been called. This
1256 * works because this device is usually set up by BIOS.
1259 if (!pci_resource_start(pdev
, AHCI_PCI_BAR
) ||
1260 !pci_resource_len(pdev
, AHCI_PCI_BAR
))
1263 mmio
= pci_iomap(pdev
, AHCI_PCI_BAR
, 64);
1267 tmp
= ioread32(mmio
+ AHCI_GLOBAL_CTL
);
1268 if (tmp
& AHCI_ENABLE
) {
1269 tmp
&= ~AHCI_ENABLE
;
1270 iowrite32(tmp
, mmio
+ AHCI_GLOBAL_CTL
);
1272 tmp
= ioread32(mmio
+ AHCI_GLOBAL_CTL
);
1273 if (tmp
& AHCI_ENABLE
)
1277 pci_iounmap(pdev
, mmio
);
1282 * piix_check_450nx_errata - Check for problem 450NX setup
1283 * @ata_dev: the PCI device to check
1285 * Check for the present of 450NX errata #19 and errata #25. If
1286 * they are found return an error code so we can turn off DMA
1289 static int __devinit
piix_check_450nx_errata(struct pci_dev
*ata_dev
)
1291 struct pci_dev
*pdev
= NULL
;
1293 int no_piix_dma
= 0;
1295 while ((pdev
= pci_get_device(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_82454NX
, pdev
)) != NULL
) {
1296 /* Look for 450NX PXB. Check for problem configurations
1297 A PCI quirk checks bit 6 already */
1298 pci_read_config_word(pdev
, 0x41, &cfg
);
1299 /* Only on the original revision: IDE DMA can hang */
1300 if (pdev
->revision
== 0x00)
1302 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1303 else if (cfg
& (1<<14) && pdev
->revision
< 5)
1307 dev_warn(&ata_dev
->dev
,
1308 "450NX errata present, disabling IDE DMA%s\n",
1309 no_piix_dma
== 2 ? " - a BIOS update may resolve this"
1315 static void __devinit
piix_init_pcs(struct ata_host
*host
,
1316 const struct piix_map_db
*map_db
)
1318 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1321 pci_read_config_word(pdev
, ICH5_PCS
, &pcs
);
1323 new_pcs
= pcs
| map_db
->port_enable
;
1325 if (new_pcs
!= pcs
) {
1326 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs
, new_pcs
);
1327 pci_write_config_word(pdev
, ICH5_PCS
, new_pcs
);
1332 static const int *__devinit
piix_init_sata_map(struct pci_dev
*pdev
,
1333 struct ata_port_info
*pinfo
,
1334 const struct piix_map_db
*map_db
)
1337 int i
, invalid_map
= 0;
1340 pci_read_config_byte(pdev
, ICH5_PMR
, &map_value
);
1342 map
= map_db
->map
[map_value
& map_db
->mask
];
1344 dev_info(&pdev
->dev
, "MAP [");
1345 for (i
= 0; i
< 4; i
++) {
1357 WARN_ON((i
& 1) || map
[i
+ 1] != IDE
);
1358 pinfo
[i
/ 2] = piix_port_info
[ich_pata_100
];
1360 pr_cont(" IDE IDE");
1364 pr_cont(" P%d", map
[i
]);
1366 pinfo
[i
/ 2].flags
|= ATA_FLAG_SLAVE_POSS
;
1373 dev_err(&pdev
->dev
, "invalid MAP value %u\n", map_value
);
1378 static bool piix_no_sidpr(struct ata_host
*host
)
1380 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1383 * Samsung DB-P70 only has three ATA ports exposed and
1384 * curiously the unconnected first port reports link online
1385 * while not responding to SRST protocol causing excessive
1388 * Unfortunately, the system doesn't carry enough DMI
1389 * information to identify the machine but does have subsystem
1390 * vendor and device set. As it's unclear whether the
1391 * subsystem vendor/device is used only for this specific
1392 * board, the port can't be disabled solely with the
1393 * information; however, turning off SIDPR access works around
1394 * the problem. Turn it off.
1396 * This problem is reported in bnc#441240.
1398 * https://bugzilla.novell.com/show_bug.cgi?id=441420
1400 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
&& pdev
->device
== 0x2920 &&
1401 pdev
->subsystem_vendor
== PCI_VENDOR_ID_SAMSUNG
&&
1402 pdev
->subsystem_device
== 0xb049) {
1404 "Samsung DB-P70 detected, disabling SIDPR\n");
1411 static int __devinit
piix_init_sidpr(struct ata_host
*host
)
1413 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1414 struct piix_host_priv
*hpriv
= host
->private_data
;
1415 struct ata_link
*link0
= &host
->ports
[0]->link
;
1419 /* check for availability */
1420 for (i
= 0; i
< 4; i
++)
1421 if (hpriv
->map
[i
] == IDE
)
1424 /* is it blacklisted? */
1425 if (piix_no_sidpr(host
))
1428 if (!(host
->ports
[0]->flags
& PIIX_FLAG_SIDPR
))
1431 if (pci_resource_start(pdev
, PIIX_SIDPR_BAR
) == 0 ||
1432 pci_resource_len(pdev
, PIIX_SIDPR_BAR
) != PIIX_SIDPR_LEN
)
1435 if (pcim_iomap_regions(pdev
, 1 << PIIX_SIDPR_BAR
, DRV_NAME
))
1438 hpriv
->sidpr
= pcim_iomap_table(pdev
)[PIIX_SIDPR_BAR
];
1440 /* SCR access via SIDPR doesn't work on some configurations.
1441 * Give it a test drive by inhibiting power save modes which
1444 piix_sidpr_scr_read(link0
, SCR_CONTROL
, &scontrol
);
1446 /* if IPM is already 3, SCR access is probably working. Don't
1447 * un-inhibit power save modes as BIOS might have inhibited
1448 * them for a reason.
1450 if ((scontrol
& 0xf00) != 0x300) {
1452 piix_sidpr_scr_write(link0
, SCR_CONTROL
, scontrol
);
1453 piix_sidpr_scr_read(link0
, SCR_CONTROL
, &scontrol
);
1455 if ((scontrol
& 0xf00) != 0x300) {
1457 "SCR access via SIDPR is available but doesn't work\n");
1462 /* okay, SCRs available, set ops and ask libata for slave_link */
1463 for (i
= 0; i
< 2; i
++) {
1464 struct ata_port
*ap
= host
->ports
[i
];
1466 ap
->ops
= &piix_sidpr_sata_ops
;
1468 if (ap
->flags
& ATA_FLAG_SLAVE_POSS
) {
1469 rc
= ata_slave_link_init(ap
);
1478 static void piix_iocfg_bit18_quirk(struct ata_host
*host
)
1480 static const struct dmi_system_id sysids
[] = {
1482 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1483 * isn't used to boot the system which
1484 * disables the channel.
1488 DMI_MATCH(DMI_SYS_VENDOR
, "Clevo Co."),
1489 DMI_MATCH(DMI_PRODUCT_NAME
, "M570U"),
1493 { } /* terminate list */
1495 struct pci_dev
*pdev
= to_pci_dev(host
->dev
);
1496 struct piix_host_priv
*hpriv
= host
->private_data
;
1498 if (!dmi_check_system(sysids
))
1501 /* The datasheet says that bit 18 is NOOP but certain systems
1502 * seem to use it to disable a channel. Clear the bit on the
1505 if (hpriv
->saved_iocfg
& (1 << 18)) {
1506 dev_info(&pdev
->dev
, "applying IOCFG bit18 quirk\n");
1507 pci_write_config_dword(pdev
, PIIX_IOCFG
,
1508 hpriv
->saved_iocfg
& ~(1 << 18));
1512 static bool piix_broken_system_poweroff(struct pci_dev
*pdev
)
1514 static const struct dmi_system_id broken_systems
[] = {
1516 .ident
= "HP Compaq 2510p",
1518 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1519 DMI_MATCH(DMI_PRODUCT_NAME
, "HP Compaq 2510p"),
1521 /* PCI slot number of the controller */
1522 .driver_data
= (void *)0x1FUL
,
1525 .ident
= "HP Compaq nc6000",
1527 DMI_MATCH(DMI_SYS_VENDOR
, "Hewlett-Packard"),
1528 DMI_MATCH(DMI_PRODUCT_NAME
, "HP Compaq nc6000"),
1530 /* PCI slot number of the controller */
1531 .driver_data
= (void *)0x1FUL
,
1534 { } /* terminate list */
1536 const struct dmi_system_id
*dmi
= dmi_first_match(broken_systems
);
1539 unsigned long slot
= (unsigned long)dmi
->driver_data
;
1540 /* apply the quirk only to on-board controllers */
1541 return slot
== PCI_SLOT(pdev
->devfn
);
1548 * piix_init_one - Register PIIX ATA PCI device with kernel services
1549 * @pdev: PCI device to register
1550 * @ent: Entry in piix_pci_tbl matching with @pdev
1552 * Called from kernel PCI layer. We probe for combined mode (sigh),
1553 * and then hand over control to libata, for it to do the rest.
1556 * Inherited from PCI layer (may sleep).
1559 * Zero on success, or -ERRNO value.
1562 static int __devinit
piix_init_one(struct pci_dev
*pdev
,
1563 const struct pci_device_id
*ent
)
1565 struct device
*dev
= &pdev
->dev
;
1566 struct ata_port_info port_info
[2];
1567 const struct ata_port_info
*ppi
[] = { &port_info
[0], &port_info
[1] };
1568 struct scsi_host_template
*sht
= &piix_sht
;
1569 unsigned long port_flags
;
1570 struct ata_host
*host
;
1571 struct piix_host_priv
*hpriv
;
1574 ata_print_version_once(&pdev
->dev
, DRV_VERSION
);
1576 /* no hotplugging support for later devices (FIXME) */
1577 if (!in_module_init
&& ent
->driver_data
>= ich5_sata
)
1580 if (piix_broken_system_poweroff(pdev
)) {
1581 piix_port_info
[ent
->driver_data
].flags
|=
1582 ATA_FLAG_NO_POWEROFF_SPINDOWN
|
1583 ATA_FLAG_NO_HIBERNATE_SPINDOWN
;
1584 dev_info(&pdev
->dev
, "quirky BIOS, skipping spindown "
1585 "on poweroff and hibernation\n");
1588 port_info
[0] = piix_port_info
[ent
->driver_data
];
1589 port_info
[1] = piix_port_info
[ent
->driver_data
];
1591 port_flags
= port_info
[0].flags
;
1593 /* enable device and prepare host */
1594 rc
= pcim_enable_device(pdev
);
1598 hpriv
= devm_kzalloc(dev
, sizeof(*hpriv
), GFP_KERNEL
);
1602 /* Save IOCFG, this will be used for cable detection, quirk
1603 * detection and restoration on detach. This is necessary
1604 * because some ACPI implementations mess up cable related
1605 * bits on _STM. Reported on kernel bz#11879.
1607 pci_read_config_dword(pdev
, PIIX_IOCFG
, &hpriv
->saved_iocfg
);
1609 /* ICH6R may be driven by either ata_piix or ahci driver
1610 * regardless of BIOS configuration. Make sure AHCI mode is
1613 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
&& pdev
->device
== 0x2652) {
1614 rc
= piix_disable_ahci(pdev
);
1619 /* SATA map init can change port_info, do it before prepping host */
1620 if (port_flags
& ATA_FLAG_SATA
)
1621 hpriv
->map
= piix_init_sata_map(pdev
, port_info
,
1622 piix_map_db_table
[ent
->driver_data
]);
1624 rc
= ata_pci_bmdma_prepare_host(pdev
, ppi
, &host
);
1627 host
->private_data
= hpriv
;
1629 /* initialize controller */
1630 if (port_flags
& ATA_FLAG_SATA
) {
1631 piix_init_pcs(host
, piix_map_db_table
[ent
->driver_data
]);
1632 rc
= piix_init_sidpr(host
);
1635 if (host
->ports
[0]->ops
== &piix_sidpr_sata_ops
)
1636 sht
= &piix_sidpr_sht
;
1639 /* apply IOCFG bit18 quirk */
1640 piix_iocfg_bit18_quirk(host
);
1642 /* On ICH5, some BIOSen disable the interrupt using the
1643 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1644 * On ICH6, this bit has the same effect, but only when
1645 * MSI is disabled (and it is disabled, as we don't use
1646 * message-signalled interrupts currently).
1648 if (port_flags
& PIIX_FLAG_CHECKINTR
)
1651 if (piix_check_450nx_errata(pdev
)) {
1652 /* This writes into the master table but it does not
1653 really matter for this errata as we will apply it to
1654 all the PIIX devices on the board */
1655 host
->ports
[0]->mwdma_mask
= 0;
1656 host
->ports
[0]->udma_mask
= 0;
1657 host
->ports
[1]->mwdma_mask
= 0;
1658 host
->ports
[1]->udma_mask
= 0;
1660 host
->flags
|= ATA_HOST_PARALLEL_SCAN
;
1662 pci_set_master(pdev
);
1663 return ata_pci_sff_activate_host(host
, ata_bmdma_interrupt
, sht
);
1666 static void piix_remove_one(struct pci_dev
*pdev
)
1668 struct ata_host
*host
= dev_get_drvdata(&pdev
->dev
);
1669 struct piix_host_priv
*hpriv
= host
->private_data
;
1671 pci_write_config_dword(pdev
, PIIX_IOCFG
, hpriv
->saved_iocfg
);
1673 ata_pci_remove_one(pdev
);
1676 static int __init
piix_init(void)
1680 DPRINTK("pci_register_driver\n");
1681 rc
= pci_register_driver(&piix_pci_driver
);
1691 static void __exit
piix_exit(void)
1693 pci_unregister_driver(&piix_pci_driver
);
1696 module_init(piix_init
);
1697 module_exit(piix_exit
);