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powerpc/mpc5xxx: Use of_get_next_parent to simplify code
[linux/fpc-iii.git] / drivers / ata / ata_piix.c
blobffbe625e6fd2738726e77d42313aa9a09866ec4b
1 /*
2 * ata_piix.c - Intel PATA/SATA controllers
3 *
4 * Maintained by: Tejun Heo <tj@kernel.org>
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
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 * 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.
45 *
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.
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 * ICH7 errata #16 - MWDMA1 timings are incorrect
76 *
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
84 */
85
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>
97
98 #define DRV_NAME "ata_piix"
99 #define DRV_VERSION "2.13"
100
101 enum {
102 PIIX_IOCFG = 0x54, /* IDE I/O configuration register */
103 ICH5_PMR = 0x90, /* address map register */
104 ICH5_PCS = 0x92, /* port control and status */
105 PIIX_SIDPR_BAR = 5,
106 PIIX_SIDPR_LEN = 16,
107 PIIX_SIDPR_IDX = 0,
108 PIIX_SIDPR_DATA = 4,
109
110 PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
111 PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */
112
113 PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS,
114 PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
115
116 PIIX_FLAG_PIO16 = (1 << 30), /*support 16bit PIO only*/
117
118 PIIX_80C_PRI = (1 << 5) | (1 << 4),
119 PIIX_80C_SEC = (1 << 7) | (1 << 6),
120
121 /* constants for mapping table */
122 P0 = 0, /* port 0 */
123 P1 = 1, /* port 1 */
124 P2 = 2, /* port 2 */
125 P3 = 3, /* port 3 */
126 IDE = -1, /* IDE */
127 NA = -2, /* not available */
128 RV = -3, /* reserved */
129
130 PIIX_AHCI_DEVICE = 6,
131
132 /* host->flags bits */
133 PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
134 };
135
136 enum piix_controller_ids {
137 /* 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*/
144 ich5_sata,
145 ich6_sata,
146 ich6m_sata,
147 ich8_sata,
148 ich8_2port_sata,
149 ich8m_apple_sata, /* locks up on second port enable */
150 tolapai_sata,
151 piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */
152 ich8_sata_snb,
153 ich8_2port_sata_snb,
154 ich8_2port_sata_byt,
155 };
156
157 struct piix_map_db {
158 const u32 mask;
159 const u16 port_enable;
160 const int map[][4];
161 };
162
163 struct piix_host_priv {
164 const int *map;
165 u32 saved_iocfg;
166 void __iomem *sidpr;
167 };
168
169 static unsigned int in_module_init = 1;
170
171 static const struct pci_device_id piix_pci_tbl[] = {
172 /* Intel PIIX3 for the 430HX etc */
173 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
174 /* VMware ICH4 */
175 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
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-L */
198 { 0x8086, 0x24C1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
199 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
200 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
201 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
202 /* Intel ICH5 */
203 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
204 /* C-ICH (i810E2) */
205 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
206 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
207 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
208 /* ICH6 (and 6) (i915) UDMA 100 */
209 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
210 /* ICH7/7-R (i945, i975) UDMA 100*/
211 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
212 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
213 /* ICH8 Mobile PATA Controller */
214 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
215
216 /* SATA ports */
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 },
230 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
231 * Attach iff the controller is in IDE mode. */
232 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID,
233 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata },
234 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
235 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
236 /* 82801GBM/GHM (ICH7M, identical to ICH6M) */
237 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata },
238 /* Enterprise Southbridge 2 (631xESB/632xESB) */
239 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
240 /* SATA Controller 1 IDE (ICH8) */
241 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
242 /* SATA Controller 2 IDE (ICH8) */
243 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
244 /* Mobile SATA Controller IDE (ICH8M), Apple */
245 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
246 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata },
247 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata },
248 /* Mobile SATA Controller IDE (ICH8M) */
249 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
250 /* SATA Controller IDE (ICH9) */
251 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
252 /* SATA Controller IDE (ICH9) */
253 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
254 /* SATA Controller IDE (ICH9) */
255 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
256 /* SATA Controller IDE (ICH9M) */
257 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
258 /* SATA Controller IDE (ICH9M) */
259 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
260 /* SATA Controller IDE (ICH9M) */
261 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
262 /* SATA Controller IDE (Tolapai) */
263 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata },
264 /* SATA Controller IDE (ICH10) */
265 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
266 /* SATA Controller IDE (ICH10) */
267 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
268 /* SATA Controller IDE (ICH10) */
269 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
270 /* SATA Controller IDE (ICH10) */
271 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
272 /* SATA Controller IDE (PCH) */
273 { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
274 /* SATA Controller IDE (PCH) */
275 { 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
276 /* SATA Controller IDE (PCH) */
277 { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
278 /* SATA Controller IDE (PCH) */
279 { 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
280 /* SATA Controller IDE (PCH) */
281 { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
282 /* SATA Controller IDE (PCH) */
283 { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
284 /* SATA Controller IDE (CPT) */
285 { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
286 /* SATA Controller IDE (CPT) */
287 { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
288 /* SATA Controller IDE (CPT) */
289 { 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
290 /* SATA Controller IDE (CPT) */
291 { 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
292 /* SATA Controller IDE (PBG) */
293 { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
294 /* SATA Controller IDE (PBG) */
295 { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
296 /* SATA Controller IDE (Panther Point) */
297 { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
298 /* SATA Controller IDE (Panther Point) */
299 { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
300 /* SATA Controller IDE (Panther Point) */
301 { 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
302 /* SATA Controller IDE (Panther Point) */
303 { 0x8086, 0x1e09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
304 /* SATA Controller IDE (Lynx Point) */
305 { 0x8086, 0x8c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
306 /* SATA Controller IDE (Lynx Point) */
307 { 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
308 /* SATA Controller IDE (Lynx Point) */
309 { 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
310 /* SATA Controller IDE (Lynx Point) */
311 { 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
312 /* SATA Controller IDE (Lynx Point-LP) */
313 { 0x8086, 0x9c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
314 /* SATA Controller IDE (Lynx Point-LP) */
315 { 0x8086, 0x9c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
316 /* SATA Controller IDE (Lynx Point-LP) */
317 { 0x8086, 0x9c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
318 /* SATA Controller IDE (Lynx Point-LP) */
319 { 0x8086, 0x9c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
320 /* SATA Controller IDE (DH89xxCC) */
321 { 0x8086, 0x2326, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
322 /* SATA Controller IDE (Avoton) */
323 { 0x8086, 0x1f20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
324 /* SATA Controller IDE (Avoton) */
325 { 0x8086, 0x1f21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
326 /* SATA Controller IDE (Avoton) */
327 { 0x8086, 0x1f30, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
328 /* SATA Controller IDE (Avoton) */
329 { 0x8086, 0x1f31, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
330 /* SATA Controller IDE (Wellsburg) */
331 { 0x8086, 0x8d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
332 /* SATA Controller IDE (Wellsburg) */
333 { 0x8086, 0x8d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
334 /* SATA Controller IDE (Wellsburg) */
335 { 0x8086, 0x8d60, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
336 /* SATA Controller IDE (Wellsburg) */
337 { 0x8086, 0x8d68, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
338 /* SATA Controller IDE (BayTrail) */
339 { 0x8086, 0x0F20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt },
340 { 0x8086, 0x0F21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt },
341 /* SATA Controller IDE (Coleto Creek) */
342 { 0x8086, 0x23a6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
343 /* SATA Controller IDE (9 Series) */
344 { 0x8086, 0x8c88, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
345 /* SATA Controller IDE (9 Series) */
346 { 0x8086, 0x8c89, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
347 /* SATA Controller IDE (9 Series) */
348 { 0x8086, 0x8c80, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
349 /* SATA Controller IDE (9 Series) */
350 { 0x8086, 0x8c81, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
351
352 { } /* terminate list */
353 };
354
355 static const struct piix_map_db ich5_map_db = {
356 .mask = 0x7,
357 .port_enable = 0x3,
358 .map = {
359 /* PM PS SM SS MAP */
360 { P0, NA, P1, NA }, /* 000b */
361 { P1, NA, P0, NA }, /* 001b */
362 { RV, RV, RV, RV },
363 { RV, RV, RV, RV },
364 { P0, P1, IDE, IDE }, /* 100b */
365 { P1, P0, IDE, IDE }, /* 101b */
366 { IDE, IDE, P0, P1 }, /* 110b */
367 { IDE, IDE, P1, P0 }, /* 111b */
368 },
369 };
370
371 static const struct piix_map_db ich6_map_db = {
372 .mask = 0x3,
373 .port_enable = 0xf,
374 .map = {
375 /* PM PS SM SS MAP */
376 { P0, P2, P1, P3 }, /* 00b */
377 { IDE, IDE, P1, P3 }, /* 01b */
378 { P0, P2, IDE, IDE }, /* 10b */
379 { RV, RV, RV, RV },
380 },
381 };
382
383 static const struct piix_map_db ich6m_map_db = {
384 .mask = 0x3,
385 .port_enable = 0x5,
386
387 /* Map 01b isn't specified in the doc but some notebooks use
388 * it anyway. MAP 01b have been spotted on both ICH6M and
389 * ICH7M.
390 */
391 .map = {
392 /* PM PS SM SS MAP */
393 { P0, P2, NA, NA }, /* 00b */
394 { IDE, IDE, P1, P3 }, /* 01b */
395 { P0, P2, IDE, IDE }, /* 10b */
396 { RV, RV, RV, RV },
397 },
398 };
399
400 static const struct piix_map_db ich8_map_db = {
401 .mask = 0x3,
402 .port_enable = 0xf,
403 .map = {
404 /* PM PS SM SS MAP */
405 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
406 { RV, RV, RV, RV },
407 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
408 { RV, RV, RV, RV },
409 },
410 };
411
412 static const struct piix_map_db ich8_2port_map_db = {
413 .mask = 0x3,
414 .port_enable = 0x3,
415 .map = {
416 /* PM PS SM SS MAP */
417 { P0, NA, P1, NA }, /* 00b */
418 { RV, RV, RV, RV }, /* 01b */
419 { RV, RV, RV, RV }, /* 10b */
420 { RV, RV, RV, RV },
421 },
422 };
423
424 static const struct piix_map_db ich8m_apple_map_db = {
425 .mask = 0x3,
426 .port_enable = 0x1,
427 .map = {
428 /* PM PS SM SS MAP */
429 { P0, NA, NA, NA }, /* 00b */
430 { RV, RV, RV, RV },
431 { P0, P2, IDE, IDE }, /* 10b */
432 { RV, RV, RV, RV },
433 },
434 };
435
436 static const struct piix_map_db tolapai_map_db = {
437 .mask = 0x3,
438 .port_enable = 0x3,
439 .map = {
440 /* PM PS SM SS MAP */
441 { P0, NA, P1, NA }, /* 00b */
442 { RV, RV, RV, RV }, /* 01b */
443 { RV, RV, RV, RV }, /* 10b */
444 { RV, RV, RV, RV },
445 },
446 };
447
448 static const struct piix_map_db *piix_map_db_table[] = {
449 [ich5_sata] = &ich5_map_db,
450 [ich6_sata] = &ich6_map_db,
451 [ich6m_sata] = &ich6m_map_db,
452 [ich8_sata] = &ich8_map_db,
453 [ich8_2port_sata] = &ich8_2port_map_db,
454 [ich8m_apple_sata] = &ich8m_apple_map_db,
455 [tolapai_sata] = &tolapai_map_db,
456 [ich8_sata_snb] = &ich8_map_db,
457 [ich8_2port_sata_snb] = &ich8_2port_map_db,
458 [ich8_2port_sata_byt] = &ich8_2port_map_db,
459 };
460
461 static struct pci_bits piix_enable_bits[] = {
462 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
463 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
464 };
465
466 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
467 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
468 MODULE_LICENSE("GPL");
469 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
470 MODULE_VERSION(DRV_VERSION);
471
472 struct ich_laptop {
473 u16 device;
474 u16 subvendor;
475 u16 subdevice;
476 };
477
478 /*
479 * List of laptops that use short cables rather than 80 wire
480 */
481
482 static const struct ich_laptop ich_laptop[] = {
483 /* devid, subvendor, subdev */
484 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
485 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
486 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
487 { 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */
488 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
489 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
490 { 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */
491 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
492 { 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */
493 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
494 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
495 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
496 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
497 { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */
498 /* end marker */
499 { 0, }
500 };
501
502 static int piix_port_start(struct ata_port *ap)
503 {
504 if (!(ap->flags & PIIX_FLAG_PIO16))
505 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
506
507 return ata_bmdma_port_start(ap);
508 }
509
510 /**
511 * ich_pata_cable_detect - Probe host controller cable detect info
512 * @ap: Port for which cable detect info is desired
513 *
514 * Read 80c cable indicator from ATA PCI device's PCI config
515 * register. This register is normally set by firmware (BIOS).
516 *
517 * LOCKING:
518 * None (inherited from caller).
519 */
520
521 static int ich_pata_cable_detect(struct ata_port *ap)
522 {
523 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
524 struct piix_host_priv *hpriv = ap->host->private_data;
525 const struct ich_laptop *lap = &ich_laptop[0];
526 u8 mask;
527
528 /* Check for specials */
529 while (lap->device) {
530 if (lap->device == pdev->device &&
531 lap->subvendor == pdev->subsystem_vendor &&
532 lap->subdevice == pdev->subsystem_device)
533 return ATA_CBL_PATA40_SHORT;
534
535 lap++;
536 }
537
538 /* check BIOS cable detect results */
539 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
540 if ((hpriv->saved_iocfg & mask) == 0)
541 return ATA_CBL_PATA40;
542 return ATA_CBL_PATA80;
543 }
544
545 /**
546 * piix_pata_prereset - prereset for PATA host controller
547 * @link: Target link
548 * @deadline: deadline jiffies for the operation
549 *
550 * LOCKING:
551 * None (inherited from caller).
552 */
553 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
554 {
555 struct ata_port *ap = link->ap;
556 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
557
558 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
559 return -ENOENT;
560 return ata_sff_prereset(link, deadline);
561 }
562
563 static DEFINE_SPINLOCK(piix_lock);
564
565 static void piix_set_timings(struct ata_port *ap, struct ata_device *adev,
566 u8 pio)
567 {
568 struct pci_dev *dev = to_pci_dev(ap->host->dev);
569 unsigned long flags;
570 unsigned int is_slave = (adev->devno != 0);
571 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
572 unsigned int slave_port = 0x44;
573 u16 master_data;
574 u8 slave_data;
575 u8 udma_enable;
576 int control = 0;
577
578 /*
579 * See Intel Document 298600-004 for the timing programing rules
580 * for ICH controllers.
581 */
582
583 static const /* ISP RTC */
584 u8 timings[][2] = { { 0, 0 },
585 { 0, 0 },
586 { 1, 0 },
587 { 2, 1 },
588 { 2, 3 }, };
589
590 if (pio >= 2)
591 control |= 1; /* TIME1 enable */
592 if (ata_pio_need_iordy(adev))
593 control |= 2; /* IE enable */
594 /* Intel specifies that the PPE functionality is for disk only */
595 if (adev->class == ATA_DEV_ATA)
596 control |= 4; /* PPE enable */
597 /*
598 * If the drive MWDMA is faster than it can do PIO then
599 * we must force PIO into PIO0
600 */
601 if (adev->pio_mode < XFER_PIO_0 + pio)
602 /* Enable DMA timing only */
603 control |= 8; /* PIO cycles in PIO0 */
604
605 spin_lock_irqsave(&piix_lock, flags);
606
607 /* PIO configuration clears DTE unconditionally. It will be
608 * programmed in set_dmamode which is guaranteed to be called
609 * after set_piomode if any DMA mode is available.
610 */
611 pci_read_config_word(dev, master_port, &master_data);
612 if (is_slave) {
613 /* clear TIME1|IE1|PPE1|DTE1 */
614 master_data &= 0xff0f;
615 /* enable PPE1, IE1 and TIME1 as needed */
616 master_data |= (control << 4);
617 pci_read_config_byte(dev, slave_port, &slave_data);
618 slave_data &= (ap->port_no ? 0x0f : 0xf0);
619 /* Load the timing nibble for this slave */
620 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
621 << (ap->port_no ? 4 : 0);
622 } else {
623 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
624 master_data &= 0xccf0;
625 /* Enable PPE, IE and TIME as appropriate */
626 master_data |= control;
627 /* load ISP and RCT */
628 master_data |=
629 (timings[pio][0] << 12) |
630 (timings[pio][1] << 8);
631 }
632
633 /* Enable SITRE (separate slave timing register) */
634 master_data |= 0x4000;
635 pci_write_config_word(dev, master_port, master_data);
636 if (is_slave)
637 pci_write_config_byte(dev, slave_port, slave_data);
638
639 /* Ensure the UDMA bit is off - it will be turned back on if
640 UDMA is selected */
641
642 if (ap->udma_mask) {
643 pci_read_config_byte(dev, 0x48, &udma_enable);
644 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
645 pci_write_config_byte(dev, 0x48, udma_enable);
646 }
647
648 spin_unlock_irqrestore(&piix_lock, flags);
649 }
650
651 /**
652 * piix_set_piomode - Initialize host controller PATA PIO timings
653 * @ap: Port whose timings we are configuring
654 * @adev: Drive in question
655 *
656 * Set PIO mode for device, in host controller PCI config space.
657 *
658 * LOCKING:
659 * None (inherited from caller).
660 */
661
662 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
663 {
664 piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0);
665 }
666
667 /**
668 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
669 * @ap: Port whose timings we are configuring
670 * @adev: Drive in question
671 * @isich: set if the chip is an ICH device
672 *
673 * Set UDMA mode for device, in host controller PCI config space.
674 *
675 * LOCKING:
676 * None (inherited from caller).
677 */
678
679 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
680 {
681 struct pci_dev *dev = to_pci_dev(ap->host->dev);
682 unsigned long flags;
683 u8 speed = adev->dma_mode;
684 int devid = adev->devno + 2 * ap->port_no;
685 u8 udma_enable = 0;
686
687 if (speed >= XFER_UDMA_0) {
688 unsigned int udma = speed - XFER_UDMA_0;
689 u16 udma_timing;
690 u16 ideconf;
691 int u_clock, u_speed;
692
693 spin_lock_irqsave(&piix_lock, flags);
694
695 pci_read_config_byte(dev, 0x48, &udma_enable);
696
697 /*
698 * UDMA is handled by a combination of clock switching and
699 * selection of dividers
700 *
701 * Handy rule: Odd modes are UDMATIMx 01, even are 02
702 * except UDMA0 which is 00
703 */
704 u_speed = min(2 - (udma & 1), udma);
705 if (udma == 5)
706 u_clock = 0x1000; /* 100Mhz */
707 else if (udma > 2)
708 u_clock = 1; /* 66Mhz */
709 else
710 u_clock = 0; /* 33Mhz */
711
712 udma_enable |= (1 << devid);
713
714 /* Load the CT/RP selection */
715 pci_read_config_word(dev, 0x4A, &udma_timing);
716 udma_timing &= ~(3 << (4 * devid));
717 udma_timing |= u_speed << (4 * devid);
718 pci_write_config_word(dev, 0x4A, udma_timing);
719
720 if (isich) {
721 /* Select a 33/66/100Mhz clock */
722 pci_read_config_word(dev, 0x54, &ideconf);
723 ideconf &= ~(0x1001 << devid);
724 ideconf |= u_clock << devid;
725 /* For ICH or later we should set bit 10 for better
726 performance (WR_PingPong_En) */
727 pci_write_config_word(dev, 0x54, ideconf);
728 }
729
730 pci_write_config_byte(dev, 0x48, udma_enable);
731
732 spin_unlock_irqrestore(&piix_lock, flags);
733 } else {
734 /* MWDMA is driven by the PIO timings. */
735 unsigned int mwdma = speed - XFER_MW_DMA_0;
736 const unsigned int needed_pio[3] = {
737 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
738 };
739 int pio = needed_pio[mwdma] - XFER_PIO_0;
740
741 /* XFER_PIO_0 is never used currently */
742 piix_set_timings(ap, adev, pio);
743 }
744 }
745
746 /**
747 * piix_set_dmamode - Initialize host controller PATA DMA timings
748 * @ap: Port whose timings we are configuring
749 * @adev: um
750 *
751 * Set MW/UDMA mode for device, in host controller PCI config space.
752 *
753 * LOCKING:
754 * None (inherited from caller).
755 */
756
757 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
758 {
759 do_pata_set_dmamode(ap, adev, 0);
760 }
761
762 /**
763 * ich_set_dmamode - Initialize host controller PATA DMA timings
764 * @ap: Port whose timings we are configuring
765 * @adev: um
766 *
767 * Set MW/UDMA mode for device, in host controller PCI config space.
768 *
769 * LOCKING:
770 * None (inherited from caller).
771 */
772
773 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
774 {
775 do_pata_set_dmamode(ap, adev, 1);
776 }
777
778 /*
779 * Serial ATA Index/Data Pair Superset Registers access
780 *
781 * Beginning from ICH8, there's a sane way to access SCRs using index
782 * and data register pair located at BAR5 which means that we have
783 * separate SCRs for master and slave. This is handled using libata
784 * slave_link facility.
785 */
786 static const int piix_sidx_map[] = {
787 [SCR_STATUS] = 0,
788 [SCR_ERROR] = 2,
789 [SCR_CONTROL] = 1,
790 };
791
792 static void piix_sidpr_sel(struct ata_link *link, unsigned int reg)
793 {
794 struct ata_port *ap = link->ap;
795 struct piix_host_priv *hpriv = ap->host->private_data;
796
797 iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],
798 hpriv->sidpr + PIIX_SIDPR_IDX);
799 }
800
801 static int piix_sidpr_scr_read(struct ata_link *link,
802 unsigned int reg, u32 *val)
803 {
804 struct piix_host_priv *hpriv = link->ap->host->private_data;
805
806 if (reg >= ARRAY_SIZE(piix_sidx_map))
807 return -EINVAL;
808
809 piix_sidpr_sel(link, reg);
810 *val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
811 return 0;
812 }
813
814 static int piix_sidpr_scr_write(struct ata_link *link,
815 unsigned int reg, u32 val)
816 {
817 struct piix_host_priv *hpriv = link->ap->host->private_data;
818
819 if (reg >= ARRAY_SIZE(piix_sidx_map))
820 return -EINVAL;
821
822 piix_sidpr_sel(link, reg);
823 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
824 return 0;
825 }
826
827 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
828 unsigned hints)
829 {
830 return sata_link_scr_lpm(link, policy, false);
831 }
832
833 static bool piix_irq_check(struct ata_port *ap)
834 {
835 if (unlikely(!ap->ioaddr.bmdma_addr))
836 return false;
837
838 return ap->ops->bmdma_status(ap) & ATA_DMA_INTR;
839 }
840
841 #ifdef CONFIG_PM_SLEEP
842 static int piix_broken_suspend(void)
843 {
844 static const struct dmi_system_id sysids[] = {
845 {
846 .ident = "TECRA M3",
847 .matches = {
848 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
849 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
850 },
851 },
852 {
853 .ident = "TECRA M3",
854 .matches = {
855 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
856 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
857 },
858 },
859 {
860 .ident = "TECRA M4",
861 .matches = {
862 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
863 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
864 },
865 },
866 {
867 .ident = "TECRA M4",
868 .matches = {
869 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
870 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"),
871 },
872 },
873 {
874 .ident = "TECRA M5",
875 .matches = {
876 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
877 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
878 },
879 },
880 {
881 .ident = "TECRA M6",
882 .matches = {
883 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
884 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
885 },
886 },
887 {
888 .ident = "TECRA M7",
889 .matches = {
890 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
891 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
892 },
893 },
894 {
895 .ident = "TECRA A8",
896 .matches = {
897 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
898 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
899 },
900 },
901 {
902 .ident = "Satellite R20",
903 .matches = {
904 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
905 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
906 },
907 },
908 {
909 .ident = "Satellite R25",
910 .matches = {
911 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
912 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
913 },
914 },
915 {
916 .ident = "Satellite U200",
917 .matches = {
918 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
919 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
920 },
921 },
922 {
923 .ident = "Satellite U200",
924 .matches = {
925 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
926 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
927 },
928 },
929 {
930 .ident = "Satellite Pro U200",
931 .matches = {
932 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
933 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
934 },
935 },
936 {
937 .ident = "Satellite U205",
938 .matches = {
939 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
940 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
941 },
942 },
943 {
944 .ident = "SATELLITE U205",
945 .matches = {
946 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
947 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
948 },
949 },
950 {
951 .ident = "Satellite Pro A120",
952 .matches = {
953 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
954 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"),
955 },
956 },
957 {
958 .ident = "Portege M500",
959 .matches = {
960 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
961 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
962 },
963 },
964 {
965 .ident = "VGN-BX297XP",
966 .matches = {
967 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
968 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"),
969 },
970 },
971
972 { } /* terminate list */
973 };
974 static const char *oemstrs[] = {
975 "Tecra M3,",
976 };
977 int i;
978
979 if (dmi_check_system(sysids))
980 return 1;
981
982 for (i = 0; i < ARRAY_SIZE(oemstrs); i++)
983 if (dmi_find_device(DMI_DEV_TYPE_OEM_STRING, oemstrs[i], NULL))
984 return 1;
985
986 /* TECRA M4 sometimes forgets its identify and reports bogus
987 * DMI information. As the bogus information is a bit
988 * generic, match as many entries as possible. This manual
989 * matching is necessary because dmi_system_id.matches is
990 * limited to four entries.
991 */
992 if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") &&
993 dmi_match(DMI_PRODUCT_NAME, "000000") &&
994 dmi_match(DMI_PRODUCT_VERSION, "000000") &&
995 dmi_match(DMI_PRODUCT_SERIAL, "000000") &&
996 dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") &&
997 dmi_match(DMI_BOARD_NAME, "Portable PC") &&
998 dmi_match(DMI_BOARD_VERSION, "Version A0"))
999 return 1;
1000
1001 return 0;
1002 }
1003
1004 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
1005 {
1006 struct ata_host *host = pci_get_drvdata(pdev);
1007 unsigned long flags;
1008 int rc = 0;
1009
1010 rc = ata_host_suspend(host, mesg);
1011 if (rc)
1012 return rc;
1013
1014 /* Some braindamaged ACPI suspend implementations expect the
1015 * controller to be awake on entry; otherwise, it burns cpu
1016 * cycles and power trying to do something to the sleeping
1017 * beauty.
1018 */
1019 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
1020 pci_save_state(pdev);
1021
1022 /* mark its power state as "unknown", since we don't
1023 * know if e.g. the BIOS will change its device state
1024 * when we suspend.
1025 */
1026 if (pdev->current_state == PCI_D0)
1027 pdev->current_state = PCI_UNKNOWN;
1028
1029 /* tell resume that it's waking up from broken suspend */
1030 spin_lock_irqsave(&host->lock, flags);
1031 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1032 spin_unlock_irqrestore(&host->lock, flags);
1033 } else
1034 ata_pci_device_do_suspend(pdev, mesg);
1035
1036 return 0;
1037 }
1038
1039 static int piix_pci_device_resume(struct pci_dev *pdev)
1040 {
1041 struct ata_host *host = pci_get_drvdata(pdev);
1042 unsigned long flags;
1043 int rc;
1044
1045 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1046 spin_lock_irqsave(&host->lock, flags);
1047 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1048 spin_unlock_irqrestore(&host->lock, flags);
1049
1050 pci_set_power_state(pdev, PCI_D0);
1051 pci_restore_state(pdev);
1052
1053 /* PCI device wasn't disabled during suspend. Use
1054 * pci_reenable_device() to avoid affecting the enable
1055 * count.
1056 */
1057 rc = pci_reenable_device(pdev);
1058 if (rc)
1059 dev_err(&pdev->dev,
1060 "failed to enable device after resume (%d)\n",
1061 rc);
1062 } else
1063 rc = ata_pci_device_do_resume(pdev);
1064
1065 if (rc == 0)
1066 ata_host_resume(host);
1067
1068 return rc;
1069 }
1070 #endif
1071
1072 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1073 {
1074 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1075 }
1076
1077 static struct scsi_host_template piix_sht = {
1078 ATA_BMDMA_SHT(DRV_NAME),
1079 };
1080
1081 static struct ata_port_operations piix_sata_ops = {
1082 .inherits = &ata_bmdma32_port_ops,
1083 .sff_irq_check = piix_irq_check,
1084 .port_start = piix_port_start,
1085 };
1086
1087 static struct ata_port_operations piix_pata_ops = {
1088 .inherits = &piix_sata_ops,
1089 .cable_detect = ata_cable_40wire,
1090 .set_piomode = piix_set_piomode,
1091 .set_dmamode = piix_set_dmamode,
1092 .prereset = piix_pata_prereset,
1093 };
1094
1095 static struct ata_port_operations piix_vmw_ops = {
1096 .inherits = &piix_pata_ops,
1097 .bmdma_status = piix_vmw_bmdma_status,
1098 };
1099
1100 static struct ata_port_operations ich_pata_ops = {
1101 .inherits = &piix_pata_ops,
1102 .cable_detect = ich_pata_cable_detect,
1103 .set_dmamode = ich_set_dmamode,
1104 };
1105
1106 static struct device_attribute *piix_sidpr_shost_attrs[] = {
1107 &dev_attr_link_power_management_policy,
1108 NULL
1109 };
1110
1111 static struct scsi_host_template piix_sidpr_sht = {
1112 ATA_BMDMA_SHT(DRV_NAME),
1113 .shost_attrs = piix_sidpr_shost_attrs,
1114 };
1115
1116 static struct ata_port_operations piix_sidpr_sata_ops = {
1117 .inherits = &piix_sata_ops,
1118 .hardreset = sata_std_hardreset,
1119 .scr_read = piix_sidpr_scr_read,
1120 .scr_write = piix_sidpr_scr_write,
1121 .set_lpm = piix_sidpr_set_lpm,
1122 };
1123
1124 static struct ata_port_info piix_port_info[] = {
1125 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
1126 {
1127 .flags = PIIX_PATA_FLAGS,
1128 .pio_mask = ATA_PIO4,
1129 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1130 .port_ops = &piix_pata_ops,
1131 },
1132
1133 [piix_pata_33] = /* PIIX4 at 33MHz */
1134 {
1135 .flags = PIIX_PATA_FLAGS,
1136 .pio_mask = ATA_PIO4,
1137 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1138 .udma_mask = ATA_UDMA2,
1139 .port_ops = &piix_pata_ops,
1140 },
1141
1142 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
1143 {
1144 .flags = PIIX_PATA_FLAGS,
1145 .pio_mask = ATA_PIO4,
1146 .mwdma_mask = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok */
1147 .udma_mask = ATA_UDMA2,
1148 .port_ops = &ich_pata_ops,
1149 },
1150
1151 [ich_pata_66] = /* ICH controllers up to 66MHz */
1152 {
1153 .flags = PIIX_PATA_FLAGS,
1154 .pio_mask = ATA_PIO4,
1155 .mwdma_mask = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */
1156 .udma_mask = ATA_UDMA4,
1157 .port_ops = &ich_pata_ops,
1158 },
1159
1160 [ich_pata_100] =
1161 {
1162 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
1163 .pio_mask = ATA_PIO4,
1164 .mwdma_mask = ATA_MWDMA12_ONLY,
1165 .udma_mask = ATA_UDMA5,
1166 .port_ops = &ich_pata_ops,
1167 },
1168
1169 [ich_pata_100_nomwdma1] =
1170 {
1171 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
1172 .pio_mask = ATA_PIO4,
1173 .mwdma_mask = ATA_MWDMA2_ONLY,
1174 .udma_mask = ATA_UDMA5,
1175 .port_ops = &ich_pata_ops,
1176 },
1177
1178 [ich5_sata] =
1179 {
1180 .flags = PIIX_SATA_FLAGS,
1181 .pio_mask = ATA_PIO4,
1182 .mwdma_mask = ATA_MWDMA2,
1183 .udma_mask = ATA_UDMA6,
1184 .port_ops = &piix_sata_ops,
1185 },
1186
1187 [ich6_sata] =
1188 {
1189 .flags = PIIX_SATA_FLAGS,
1190 .pio_mask = ATA_PIO4,
1191 .mwdma_mask = ATA_MWDMA2,
1192 .udma_mask = ATA_UDMA6,
1193 .port_ops = &piix_sata_ops,
1194 },
1195
1196 [ich6m_sata] =
1197 {
1198 .flags = PIIX_SATA_FLAGS,
1199 .pio_mask = ATA_PIO4,
1200 .mwdma_mask = ATA_MWDMA2,
1201 .udma_mask = ATA_UDMA6,
1202 .port_ops = &piix_sata_ops,
1203 },
1204
1205 [ich8_sata] =
1206 {
1207 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
1208 .pio_mask = ATA_PIO4,
1209 .mwdma_mask = ATA_MWDMA2,
1210 .udma_mask = ATA_UDMA6,
1211 .port_ops = &piix_sata_ops,
1212 },
1213
1214 [ich8_2port_sata] =
1215 {
1216 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
1217 .pio_mask = ATA_PIO4,
1218 .mwdma_mask = ATA_MWDMA2,
1219 .udma_mask = ATA_UDMA6,
1220 .port_ops = &piix_sata_ops,
1221 },
1222
1223 [tolapai_sata] =
1224 {
1225 .flags = PIIX_SATA_FLAGS,
1226 .pio_mask = ATA_PIO4,
1227 .mwdma_mask = ATA_MWDMA2,
1228 .udma_mask = ATA_UDMA6,
1229 .port_ops = &piix_sata_ops,
1230 },
1231
1232 [ich8m_apple_sata] =
1233 {
1234 .flags = PIIX_SATA_FLAGS,
1235 .pio_mask = ATA_PIO4,
1236 .mwdma_mask = ATA_MWDMA2,
1237 .udma_mask = ATA_UDMA6,
1238 .port_ops = &piix_sata_ops,
1239 },
1240
1241 [piix_pata_vmw] =
1242 {
1243 .flags = PIIX_PATA_FLAGS,
1244 .pio_mask = ATA_PIO4,
1245 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1246 .udma_mask = ATA_UDMA2,
1247 .port_ops = &piix_vmw_ops,
1248 },
1249
1250 /*
1251 * some Sandybridge chipsets have broken 32 mode up to now,
1252 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592
1253 */
1254 [ich8_sata_snb] =
1255 {
1256 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
1257 .pio_mask = ATA_PIO4,
1258 .mwdma_mask = ATA_MWDMA2,
1259 .udma_mask = ATA_UDMA6,
1260 .port_ops = &piix_sata_ops,
1261 },
1262
1263 [ich8_2port_sata_snb] =
1264 {
1265 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR
1266 | PIIX_FLAG_PIO16,
1267 .pio_mask = ATA_PIO4,
1268 .mwdma_mask = ATA_MWDMA2,
1269 .udma_mask = ATA_UDMA6,
1270 .port_ops = &piix_sata_ops,
1271 },
1272
1273 [ich8_2port_sata_byt] =
1274 {
1275 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
1276 .pio_mask = ATA_PIO4,
1277 .mwdma_mask = ATA_MWDMA2,
1278 .udma_mask = ATA_UDMA6,
1279 .port_ops = &piix_sata_ops,
1280 },
1281
1282 };
1283
1284 #define AHCI_PCI_BAR 5
1285 #define AHCI_GLOBAL_CTL 0x04
1286 #define AHCI_ENABLE (1 << 31)
1287 static int piix_disable_ahci(struct pci_dev *pdev)
1288 {
1289 void __iomem *mmio;
1290 u32 tmp;
1291 int rc = 0;
1292
1293 /* BUG: pci_enable_device has not yet been called. This
1294 * works because this device is usually set up by BIOS.
1295 */
1296
1297 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1298 !pci_resource_len(pdev, AHCI_PCI_BAR))
1299 return 0;
1300
1301 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1302 if (!mmio)
1303 return -ENOMEM;
1304
1305 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1306 if (tmp & AHCI_ENABLE) {
1307 tmp &= ~AHCI_ENABLE;
1308 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1309
1310 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1311 if (tmp & AHCI_ENABLE)
1312 rc = -EIO;
1313 }
1314
1315 pci_iounmap(pdev, mmio);
1316 return rc;
1317 }
1318
1319 /**
1320 * piix_check_450nx_errata - Check for problem 450NX setup
1321 * @ata_dev: the PCI device to check
1322 *
1323 * Check for the present of 450NX errata #19 and errata #25. If
1324 * they are found return an error code so we can turn off DMA
1325 */
1326
1327 static int piix_check_450nx_errata(struct pci_dev *ata_dev)
1328 {
1329 struct pci_dev *pdev = NULL;
1330 u16 cfg;
1331 int no_piix_dma = 0;
1332
1333 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1334 /* Look for 450NX PXB. Check for problem configurations
1335 A PCI quirk checks bit 6 already */
1336 pci_read_config_word(pdev, 0x41, &cfg);
1337 /* Only on the original revision: IDE DMA can hang */
1338 if (pdev->revision == 0x00)
1339 no_piix_dma = 1;
1340 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1341 else if (cfg & (1<<14) && pdev->revision < 5)
1342 no_piix_dma = 2;
1343 }
1344 if (no_piix_dma)
1345 dev_warn(&ata_dev->dev,
1346 "450NX errata present, disabling IDE DMA%s\n",
1347 no_piix_dma == 2 ? " - a BIOS update may resolve this"
1348 : "");
1349
1350 return no_piix_dma;
1351 }
1352
1353 static void piix_init_pcs(struct ata_host *host,
1354 const struct piix_map_db *map_db)
1355 {
1356 struct pci_dev *pdev = to_pci_dev(host->dev);
1357 u16 pcs, new_pcs;
1358
1359 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1360
1361 new_pcs = pcs | map_db->port_enable;
1362
1363 if (new_pcs != pcs) {
1364 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1365 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1366 msleep(150);
1367 }
1368 }
1369
1370 static const int *piix_init_sata_map(struct pci_dev *pdev,
1371 struct ata_port_info *pinfo,
1372 const struct piix_map_db *map_db)
1373 {
1374 const int *map;
1375 int i, invalid_map = 0;
1376 u8 map_value;
1377 char buf[32];
1378 char *p = buf, *end = buf + sizeof(buf);
1379
1380 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1381
1382 map = map_db->map[map_value & map_db->mask];
1383
1384 for (i = 0; i < 4; i++) {
1385 switch (map[i]) {
1386 case RV:
1387 invalid_map = 1;
1388 p += scnprintf(p, end - p, " XX");
1389 break;
1390
1391 case NA:
1392 p += scnprintf(p, end - p, " --");
1393 break;
1394
1395 case IDE:
1396 WARN_ON((i & 1) || map[i + 1] != IDE);
1397 pinfo[i / 2] = piix_port_info[ich_pata_100];
1398 i++;
1399 p += scnprintf(p, end - p, " IDE IDE");
1400 break;
1401
1402 default:
1403 p += scnprintf(p, end - p, " P%d", map[i]);
1404 if (i & 1)
1405 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1406 break;
1407 }
1408 }
1409 dev_info(&pdev->dev, "MAP [%s ]\n", buf);
1410
1411 if (invalid_map)
1412 dev_err(&pdev->dev, "invalid MAP value %u\n", map_value);
1413
1414 return map;
1415 }
1416
1417 static bool piix_no_sidpr(struct ata_host *host)
1418 {
1419 struct pci_dev *pdev = to_pci_dev(host->dev);
1420
1421 /*
1422 * Samsung DB-P70 only has three ATA ports exposed and
1423 * curiously the unconnected first port reports link online
1424 * while not responding to SRST protocol causing excessive
1425 * detection delay.
1426 *
1427 * Unfortunately, the system doesn't carry enough DMI
1428 * information to identify the machine but does have subsystem
1429 * vendor and device set. As it's unclear whether the
1430 * subsystem vendor/device is used only for this specific
1431 * board, the port can't be disabled solely with the
1432 * information; however, turning off SIDPR access works around
1433 * the problem. Turn it off.
1434 *
1435 * This problem is reported in bnc#441240.
1436 *
1437 * https://bugzilla.novell.com/show_bug.cgi?id=441420
1438 */
1439 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&
1440 pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
1441 pdev->subsystem_device == 0xb049) {
1442 dev_warn(host->dev,
1443 "Samsung DB-P70 detected, disabling SIDPR\n");
1444 return true;
1445 }
1446
1447 return false;
1448 }
1449
1450 static int piix_init_sidpr(struct ata_host *host)
1451 {
1452 struct pci_dev *pdev = to_pci_dev(host->dev);
1453 struct piix_host_priv *hpriv = host->private_data;
1454 struct ata_link *link0 = &host->ports[0]->link;
1455 u32 scontrol;
1456 int i, rc;
1457
1458 /* check for availability */
1459 for (i = 0; i < 4; i++)
1460 if (hpriv->map[i] == IDE)
1461 return 0;
1462
1463 /* is it blacklisted? */
1464 if (piix_no_sidpr(host))
1465 return 0;
1466
1467 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1468 return 0;
1469
1470 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1471 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1472 return 0;
1473
1474 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1475 return 0;
1476
1477 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1478
1479 /* SCR access via SIDPR doesn't work on some configurations.
1480 * Give it a test drive by inhibiting power save modes which
1481 * we'll do anyway.
1482 */
1483 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1484
1485 /* if IPM is already 3, SCR access is probably working. Don't
1486 * un-inhibit power save modes as BIOS might have inhibited
1487 * them for a reason.
1488 */
1489 if ((scontrol & 0xf00) != 0x300) {
1490 scontrol |= 0x300;
1491 piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol);
1492 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1493
1494 if ((scontrol & 0xf00) != 0x300) {
1495 dev_info(host->dev,
1496 "SCR access via SIDPR is available but doesn't work\n");
1497 return 0;
1498 }
1499 }
1500
1501 /* okay, SCRs available, set ops and ask libata for slave_link */
1502 for (i = 0; i < 2; i++) {
1503 struct ata_port *ap = host->ports[i];
1504
1505 ap->ops = &piix_sidpr_sata_ops;
1506
1507 if (ap->flags & ATA_FLAG_SLAVE_POSS) {
1508 rc = ata_slave_link_init(ap);
1509 if (rc)
1510 return rc;
1511 }
1512 }
1513
1514 return 0;
1515 }
1516
1517 static void piix_iocfg_bit18_quirk(struct ata_host *host)
1518 {
1519 static const struct dmi_system_id sysids[] = {
1520 {
1521 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1522 * isn't used to boot the system which
1523 * disables the channel.
1524 */
1525 .ident = "M570U",
1526 .matches = {
1527 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1528 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1529 },
1530 },
1531
1532 { } /* terminate list */
1533 };
1534 struct pci_dev *pdev = to_pci_dev(host->dev);
1535 struct piix_host_priv *hpriv = host->private_data;
1536
1537 if (!dmi_check_system(sysids))
1538 return;
1539
1540 /* The datasheet says that bit 18 is NOOP but certain systems
1541 * seem to use it to disable a channel. Clear the bit on the
1542 * affected systems.
1543 */
1544 if (hpriv->saved_iocfg & (1 << 18)) {
1545 dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n");
1546 pci_write_config_dword(pdev, PIIX_IOCFG,
1547 hpriv->saved_iocfg & ~(1 << 18));
1548 }
1549 }
1550
1551 static bool piix_broken_system_poweroff(struct pci_dev *pdev)
1552 {
1553 static const struct dmi_system_id broken_systems[] = {
1554 {
1555 .ident = "HP Compaq 2510p",
1556 .matches = {
1557 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1558 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"),
1559 },
1560 /* PCI slot number of the controller */
1561 .driver_data = (void *)0x1FUL,
1562 },
1563 {
1564 .ident = "HP Compaq nc6000",
1565 .matches = {
1566 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1567 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6000"),
1568 },
1569 /* PCI slot number of the controller */
1570 .driver_data = (void *)0x1FUL,
1571 },
1572
1573 { } /* terminate list */
1574 };
1575 const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
1576
1577 if (dmi) {
1578 unsigned long slot = (unsigned long)dmi->driver_data;
1579 /* apply the quirk only to on-board controllers */
1580 return slot == PCI_SLOT(pdev->devfn);
1581 }
1582
1583 return false;
1584 }
1585
1586 static int prefer_ms_hyperv = 1;
1587 module_param(prefer_ms_hyperv, int, 0);
1588 MODULE_PARM_DESC(prefer_ms_hyperv,
1589 "Prefer Hyper-V paravirtualization drivers instead of ATA, "
1590 "0 - Use ATA drivers, "
1591 "1 (Default) - Use the paravirtualization drivers.");
1592
1593 static void piix_ignore_devices_quirk(struct ata_host *host)
1594 {
1595 #if IS_ENABLED(CONFIG_HYPERV_STORAGE)
1596 static const struct dmi_system_id ignore_hyperv[] = {
1597 {
1598 /* On Hyper-V hypervisors the disks are exposed on
1599 * both the emulated SATA controller and on the
1600 * paravirtualised drivers. The CD/DVD devices
1601 * are only exposed on the emulated controller.
1602 * Request we ignore ATA devices on this host.
1603 */
1604 .ident = "Hyper-V Virtual Machine",
1605 .matches = {
1606 DMI_MATCH(DMI_SYS_VENDOR,
1607 "Microsoft Corporation"),
1608 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
1609 },
1610 },
1611 { } /* terminate list */
1612 };
1613 static const struct dmi_system_id allow_virtual_pc[] = {
1614 {
1615 /* In MS Virtual PC guests the DMI ident is nearly
1616 * identical to a Hyper-V guest. One difference is the
1617 * product version which is used here to identify
1618 * a Virtual PC guest. This entry allows ata_piix to
1619 * drive the emulated hardware.
1620 */
1621 .ident = "MS Virtual PC 2007",
1622 .matches = {
1623 DMI_MATCH(DMI_SYS_VENDOR,
1624 "Microsoft Corporation"),
1625 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
1626 DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
1627 },
1628 },
1629 { } /* terminate list */
1630 };
1631 const struct dmi_system_id *ignore = dmi_first_match(ignore_hyperv);
1632 const struct dmi_system_id *allow = dmi_first_match(allow_virtual_pc);
1633
1634 if (ignore && !allow && prefer_ms_hyperv) {
1635 host->flags |= ATA_HOST_IGNORE_ATA;
1636 dev_info(host->dev, "%s detected, ATA device ignore set\n",
1637 ignore->ident);
1638 }
1639 #endif
1640 }
1641
1642 /**
1643 * piix_init_one - Register PIIX ATA PCI device with kernel services
1644 * @pdev: PCI device to register
1645 * @ent: Entry in piix_pci_tbl matching with @pdev
1646 *
1647 * Called from kernel PCI layer. We probe for combined mode (sigh),
1648 * and then hand over control to libata, for it to do the rest.
1649 *
1650 * LOCKING:
1651 * Inherited from PCI layer (may sleep).
1652 *
1653 * RETURNS:
1654 * Zero on success, or -ERRNO value.
1655 */
1656
1657 static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1658 {
1659 struct device *dev = &pdev->dev;
1660 struct ata_port_info port_info[2];
1661 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1662 struct scsi_host_template *sht = &piix_sht;
1663 unsigned long port_flags;
1664 struct ata_host *host;
1665 struct piix_host_priv *hpriv;
1666 int rc;
1667
1668 ata_print_version_once(&pdev->dev, DRV_VERSION);
1669
1670 /* no hotplugging support for later devices (FIXME) */
1671 if (!in_module_init && ent->driver_data >= ich5_sata)
1672 return -ENODEV;
1673
1674 if (piix_broken_system_poweroff(pdev)) {
1675 piix_port_info[ent->driver_data].flags |=
1676 ATA_FLAG_NO_POWEROFF_SPINDOWN |
1677 ATA_FLAG_NO_HIBERNATE_SPINDOWN;
1678 dev_info(&pdev->dev, "quirky BIOS, skipping spindown "
1679 "on poweroff and hibernation\n");
1680 }
1681
1682 port_info[0] = piix_port_info[ent->driver_data];
1683 port_info[1] = piix_port_info[ent->driver_data];
1684
1685 port_flags = port_info[0].flags;
1686
1687 /* enable device and prepare host */
1688 rc = pcim_enable_device(pdev);
1689 if (rc)
1690 return rc;
1691
1692 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1693 if (!hpriv)
1694 return -ENOMEM;
1695
1696 /* Save IOCFG, this will be used for cable detection, quirk
1697 * detection and restoration on detach. This is necessary
1698 * because some ACPI implementations mess up cable related
1699 * bits on _STM. Reported on kernel bz#11879.
1700 */
1701 pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg);
1702
1703 /* ICH6R may be driven by either ata_piix or ahci driver
1704 * regardless of BIOS configuration. Make sure AHCI mode is
1705 * off.
1706 */
1707 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {
1708 rc = piix_disable_ahci(pdev);
1709 if (rc)
1710 return rc;
1711 }
1712
1713 /* SATA map init can change port_info, do it before prepping host */
1714 if (port_flags & ATA_FLAG_SATA)
1715 hpriv->map = piix_init_sata_map(pdev, port_info,
1716 piix_map_db_table[ent->driver_data]);
1717
1718 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
1719 if (rc)
1720 return rc;
1721 host->private_data = hpriv;
1722
1723 /* initialize controller */
1724 if (port_flags & ATA_FLAG_SATA) {
1725 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1726 rc = piix_init_sidpr(host);
1727 if (rc)
1728 return rc;
1729 if (host->ports[0]->ops == &piix_sidpr_sata_ops)
1730 sht = &piix_sidpr_sht;
1731 }
1732
1733 /* apply IOCFG bit18 quirk */
1734 piix_iocfg_bit18_quirk(host);
1735
1736 /* On ICH5, some BIOSen disable the interrupt using the
1737 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1738 * On ICH6, this bit has the same effect, but only when
1739 * MSI is disabled (and it is disabled, as we don't use
1740 * message-signalled interrupts currently).
1741 */
1742 if (port_flags & PIIX_FLAG_CHECKINTR)
1743 pci_intx(pdev, 1);
1744
1745 if (piix_check_450nx_errata(pdev)) {
1746 /* This writes into the master table but it does not
1747 really matter for this errata as we will apply it to
1748 all the PIIX devices on the board */
1749 host->ports[0]->mwdma_mask = 0;
1750 host->ports[0]->udma_mask = 0;
1751 host->ports[1]->mwdma_mask = 0;
1752 host->ports[1]->udma_mask = 0;
1753 }
1754 host->flags |= ATA_HOST_PARALLEL_SCAN;
1755
1756 /* Allow hosts to specify device types to ignore when scanning. */
1757 piix_ignore_devices_quirk(host);
1758
1759 pci_set_master(pdev);
1760 return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht);
1761 }
1762
1763 static void piix_remove_one(struct pci_dev *pdev)
1764 {
1765 struct ata_host *host = pci_get_drvdata(pdev);
1766 struct piix_host_priv *hpriv = host->private_data;
1767
1768 pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg);
1769
1770 ata_pci_remove_one(pdev);
1771 }
1772
1773 static struct pci_driver piix_pci_driver = {
1774 .name = DRV_NAME,
1775 .id_table = piix_pci_tbl,
1776 .probe = piix_init_one,
1777 .remove = piix_remove_one,
1778 #ifdef CONFIG_PM_SLEEP
1779 .suspend = piix_pci_device_suspend,
1780 .resume = piix_pci_device_resume,
1781 #endif
1782 };
1783
1784 static int __init piix_init(void)
1785 {
1786 int rc;
1787
1788 DPRINTK("pci_register_driver\n");
1789 rc = pci_register_driver(&piix_pci_driver);
1790 if (rc)
1791 return rc;
1792
1793 in_module_init = 0;
1794
1795 DPRINTK("done\n");
1796 return 0;
1797 }
1798
1799 static void __exit piix_exit(void)
1800 {
1801 pci_unregister_driver(&piix_pci_driver);
1802 }
1803
1804 module_init(piix_init);
1805 module_exit(piix_exit);
Linux with added FPC-III support