1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ata_piix.c - Intel PATA/SATA controllers
4 *
5 * Maintained by: Tejun Heo <tj@kernel.org>
6 * Please ALWAYS copy linux-ide@vger.kernel.org
7 * on emails.
8 *
9 * Copyright 2003-2005 Red Hat Inc
10 * Copyright 2003-2005 Jeff Garzik
11 *
12 * Copyright header from piix.c:
13 *
14 * Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer
15 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
16 * Copyright (C) 2003 Red Hat Inc
17 *
18 * libata documentation is available via 'make {ps|pdf}docs',
19 * as Documentation/driver-api/libata.rst
20 *
21 * Hardware documentation available at http://developer.intel.com/
22 *
23 * Documentation
24 * Publicly available from Intel web site. Errata documentation
25 * is also publicly available. As an aide to anyone hacking on this
26 * driver the list of errata that are relevant is below, going back to
27 * PIIX4. Older device documentation is now a bit tricky to find.
28 *
29 * The chipsets all follow very much the same design. The original Triton
30 * series chipsets do _not_ support independent device timings, but this
31 * is fixed in Triton II. With the odd mobile exception the chips then
32 * change little except in gaining more modes until SATA arrives. This
33 * driver supports only the chips with independent timing (that is those
34 * with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix
35 * for the early chip drivers.
36 *
37 * Errata of note:
38 *
39 * Unfixable
40 * PIIX4 errata #9 - Only on ultra obscure hw
41 * ICH3 errata #13 - Not observed to affect real hw
42 * by Intel
43 *
44 * Things we must deal with
45 * PIIX4 errata #10 - BM IDE hang with non UDMA
46 * (must stop/start dma to recover)
47 * 440MX errata #15 - As PIIX4 errata #10
48 * PIIX4 errata #15 - Must not read control registers
49 * during a PIO transfer
50 * 440MX errata #13 - As PIIX4 errata #15
51 * ICH2 errata #21 - DMA mode 0 doesn't work right
52 * ICH0/1 errata #55 - As ICH2 errata #21
53 * ICH2 spec c #9 - Extra operations needed to handle
54 * drive hotswap [NOT YET SUPPORTED]
55 * ICH2 spec c #20 - IDE PRD must not cross a 64K boundary
56 * and must be dword aligned
57 * ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3
58 * ICH7 errata #16 - MWDMA1 timings are incorrect
59 *
60 * Should have been BIOS fixed:
61 * 450NX: errata #19 - DMA hangs on old 450NX
62 * 450NX: errata #20 - DMA hangs on old 450NX
63 * 450NX: errata #25 - Corruption with DMA on old 450NX
64 * ICH3 errata #15 - IDE deadlock under high load
65 * (BIOS must set dev 31 fn 0 bit 23)
66 * ICH3 errata #18 - Don't use native mode
67 */
68
69 #include <linux/kernel.h>
70 #include <linux/module.h>
71 #include <linux/pci.h>
72 #include <linux/init.h>
73 #include <linux/blkdev.h>
74 #include <linux/delay.h>
75 #include <linux/device.h>
76 #include <linux/gfp.h>
77 #include <scsi/scsi_host.h>
78 #include <linux/libata.h>
79 #include <linux/dmi.h>
80
81 #define DRV_NAME "ata_piix"
82 #define DRV_VERSION "2.13"
83
84 enum {
85 PIIX_IOCFG = 0x54, /* IDE I/O configuration register */
86 ICH5_PMR = 0x90, /* address map register */
87 ICH5_PCS = 0x92, /* port control and status */
88 PIIX_SIDPR_BAR = 5,
89 PIIX_SIDPR_LEN = 16,
90 PIIX_SIDPR_IDX = 0,
91 PIIX_SIDPR_DATA = 4,
92
93 PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */
94 PIIX_FLAG_SIDPR = (1 << 29), /* SATA idx/data pair regs */
95
96 PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS,
97 PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR,
98
99 PIIX_FLAG_PIO16 = (1 << 30), /*support 16bit PIO only*/
100
101 PIIX_80C_PRI = (1 << 5) | (1 << 4),
102 PIIX_80C_SEC = (1 << 7) | (1 << 6),
103
104 /* constants for mapping table */
105 P0 = 0, /* port 0 */
106 P1 = 1, /* port 1 */
107 P2 = 2, /* port 2 */
108 P3 = 3, /* port 3 */
109 IDE = -1, /* IDE */
110 NA = -2, /* not available */
111 RV = -3, /* reserved */
112
113 PIIX_AHCI_DEVICE = 6,
114
115 /* host->flags bits */
116 PIIX_HOST_BROKEN_SUSPEND = (1 << 24),
117 };
118
119 enum piix_controller_ids {
120 /* controller IDs */
121 piix_pata_mwdma, /* PIIX3 MWDMA only */
122 piix_pata_33, /* PIIX4 at 33Mhz */
123 ich_pata_33, /* ICH up to UDMA 33 only */
124 ich_pata_66, /* ICH up to 66 Mhz */
125 ich_pata_100, /* ICH up to UDMA 100 */
126 ich_pata_100_nomwdma1, /* ICH up to UDMA 100 but with no MWDMA1*/
127 ich5_sata,
128 ich6_sata,
129 ich6m_sata,
130 ich8_sata,
131 ich8_2port_sata,
132 ich8m_apple_sata, /* locks up on second port enable */
133 tolapai_sata,
134 piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */
135 ich8_sata_snb,
136 ich8_2port_sata_snb,
137 ich8_2port_sata_byt,
138 };
139
140 struct piix_map_db {
141 const u32 mask;
142 const u16 port_enable;
143 const int map[][4];
144 };
145
146 struct piix_host_priv {
147 const int *map;
148 u32 saved_iocfg;
149 void __iomem *sidpr;
150 };
151
152 static unsigned int in_module_init = 1;
153
154 static const struct pci_device_id piix_pci_tbl[] = {
155 /* Intel PIIX3 for the 430HX etc */
156 { 0x8086, 0x7010, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_mwdma },
157 /* VMware ICH4 */
158 { 0x8086, 0x7111, 0x15ad, 0x1976, 0, 0, piix_pata_vmw },
159 /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */
160 /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */
161 { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
162 /* Intel PIIX4 */
163 { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
164 /* Intel PIIX4 */
165 { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
166 /* Intel PIIX */
167 { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 },
168 /* Intel ICH (i810, i815, i840) UDMA 66*/
169 { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 },
170 /* Intel ICH0 : UDMA 33*/
171 { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 },
172 /* Intel ICH2M */
173 { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
174 /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */
175 { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
176 /* Intel ICH3M */
177 { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
178 /* Intel ICH3 (E7500/1) UDMA 100 */
179 { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
180 /* Intel ICH4-L */
181 { 0x8086, 0x24C1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
182 /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */
183 { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
184 { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
185 /* Intel ICH5 */
186 { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
187 /* C-ICH (i810E2) */
188 { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
189 /* ESB (855GME/875P + 6300ESB) UDMA 100 */
190 { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
191 /* ICH6 (and 6) (i915) UDMA 100 */
192 { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
193 /* ICH7/7-R (i945, i975) UDMA 100*/
194 { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
195 { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100_nomwdma1 },
196 /* ICH8 Mobile PATA Controller */
197 { 0x8086, 0x2850, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 },
198
199 /* SATA ports */
200
201 /* 82801EB (ICH5) */
202 { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
203 /* 82801EB (ICH5) */
204 { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
205 /* 6300ESB (ICH5 variant with broken PCS present bits) */
206 { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
207 /* 6300ESB pretending RAID */
208 { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata },
209 /* 82801FB/FW (ICH6/ICH6W) */
210 { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
211 /* 82801FR/FRW (ICH6R/ICH6RW) */
212 { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
213 /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented).
214 * Attach iff the controller is in IDE mode. */
215 { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID,
216 PCI_CLASS_STORAGE_IDE << 8, 0xffff00, ich6m_sata },
217 /* 82801GB/GR/GH (ICH7, identical to ICH6) */
218 { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
219 /* 82801GBM/GHM (ICH7M, identical to ICH6M) */
220 { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata },
221 /* Enterprise Southbridge 2 (631xESB/632xESB) */
222 { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata },
223 /* SATA Controller 1 IDE (ICH8) */
224 { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
225 /* SATA Controller 2 IDE (ICH8) */
226 { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
227 /* Mobile SATA Controller IDE (ICH8M), Apple */
228 { 0x8086, 0x2828, 0x106b, 0x00a0, 0, 0, ich8m_apple_sata },
229 { 0x8086, 0x2828, 0x106b, 0x00a1, 0, 0, ich8m_apple_sata },
230 { 0x8086, 0x2828, 0x106b, 0x00a3, 0, 0, ich8m_apple_sata },
231 /* Mobile SATA Controller IDE (ICH8M) */
232 { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
233 /* SATA Controller IDE (ICH9) */
234 { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
235 /* SATA Controller IDE (ICH9) */
236 { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
237 /* SATA Controller IDE (ICH9) */
238 { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
239 /* SATA Controller IDE (ICH9M) */
240 { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
241 /* SATA Controller IDE (ICH9M) */
242 { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
243 /* SATA Controller IDE (ICH9M) */
244 { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
245 /* SATA Controller IDE (Tolapai) */
246 { 0x8086, 0x5028, PCI_ANY_ID, PCI_ANY_ID, 0, 0, tolapai_sata },
247 /* SATA Controller IDE (ICH10) */
248 { 0x8086, 0x3a00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
249 /* SATA Controller IDE (ICH10) */
250 { 0x8086, 0x3a06, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
251 /* SATA Controller IDE (ICH10) */
252 { 0x8086, 0x3a20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
253 /* SATA Controller IDE (ICH10) */
254 { 0x8086, 0x3a26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
255 /* SATA Controller IDE (PCH) */
256 { 0x8086, 0x3b20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
257 /* SATA Controller IDE (PCH) */
258 { 0x8086, 0x3b21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
259 /* SATA Controller IDE (PCH) */
260 { 0x8086, 0x3b26, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
261 /* SATA Controller IDE (PCH) */
262 { 0x8086, 0x3b28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
263 /* SATA Controller IDE (PCH) */
264 { 0x8086, 0x3b2d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
265 /* SATA Controller IDE (PCH) */
266 { 0x8086, 0x3b2e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata },
267 /* SATA Controller IDE (CPT) */
268 { 0x8086, 0x1c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
269 /* SATA Controller IDE (CPT) */
270 { 0x8086, 0x1c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
271 /* SATA Controller IDE (CPT) */
272 { 0x8086, 0x1c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
273 /* SATA Controller IDE (CPT) */
274 { 0x8086, 0x1c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
275 /* SATA Controller IDE (PBG) */
276 { 0x8086, 0x1d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
277 /* SATA Controller IDE (PBG) */
278 { 0x8086, 0x1d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
279 /* SATA Controller IDE (Panther Point) */
280 { 0x8086, 0x1e00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
281 /* SATA Controller IDE (Panther Point) */
282 { 0x8086, 0x1e01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
283 /* SATA Controller IDE (Panther Point) */
284 { 0x8086, 0x1e08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
285 /* SATA Controller IDE (Panther Point) */
286 { 0x8086, 0x1e09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
287 /* SATA Controller IDE (Lynx Point) */
288 { 0x8086, 0x8c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
289 /* SATA Controller IDE (Lynx Point) */
290 { 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
291 /* SATA Controller IDE (Lynx Point) */
292 { 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
293 /* SATA Controller IDE (Lynx Point) */
294 { 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
295 /* SATA Controller IDE (Lynx Point-LP) */
296 { 0x8086, 0x9c00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
297 /* SATA Controller IDE (Lynx Point-LP) */
298 { 0x8086, 0x9c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
299 /* SATA Controller IDE (Lynx Point-LP) */
300 { 0x8086, 0x9c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
301 /* SATA Controller IDE (Lynx Point-LP) */
302 { 0x8086, 0x9c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
303 /* SATA Controller IDE (DH89xxCC) */
304 { 0x8086, 0x2326, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
305 /* SATA Controller IDE (Avoton) */
306 { 0x8086, 0x1f20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
307 /* SATA Controller IDE (Avoton) */
308 { 0x8086, 0x1f21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
309 /* SATA Controller IDE (Avoton) */
310 { 0x8086, 0x1f30, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
311 /* SATA Controller IDE (Avoton) */
312 { 0x8086, 0x1f31, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
313 /* SATA Controller IDE (Wellsburg) */
314 { 0x8086, 0x8d00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
315 /* SATA Controller IDE (Wellsburg) */
316 { 0x8086, 0x8d08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
317 /* SATA Controller IDE (Wellsburg) */
318 { 0x8086, 0x8d60, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
319 /* SATA Controller IDE (Wellsburg) */
320 { 0x8086, 0x8d68, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
321 /* SATA Controller IDE (BayTrail) */
322 { 0x8086, 0x0F20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt },
323 { 0x8086, 0x0F21, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_byt },
324 /* SATA Controller IDE (Coleto Creek) */
325 { 0x8086, 0x23a6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
326 /* SATA Controller IDE (9 Series) */
327 { 0x8086, 0x8c88, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
328 /* SATA Controller IDE (9 Series) */
329 { 0x8086, 0x8c89, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
330 /* SATA Controller IDE (9 Series) */
331 { 0x8086, 0x8c80, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
332 /* SATA Controller IDE (9 Series) */
333 { 0x8086, 0x8c81, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
334
335 { } /* terminate list */
336 };
337
338 static const struct piix_map_db ich5_map_db = {
339 .mask = 0x7,
340 .port_enable = 0x3,
341 .map = {
342 /* PM PS SM SS MAP */
343 { P0, NA, P1, NA }, /* 000b */
344 { P1, NA, P0, NA }, /* 001b */
345 { RV, RV, RV, RV },
346 { RV, RV, RV, RV },
347 { P0, P1, IDE, IDE }, /* 100b */
348 { P1, P0, IDE, IDE }, /* 101b */
349 { IDE, IDE, P0, P1 }, /* 110b */
350 { IDE, IDE, P1, P0 }, /* 111b */
351 },
352 };
353
354 static const struct piix_map_db ich6_map_db = {
355 .mask = 0x3,
356 .port_enable = 0xf,
357 .map = {
358 /* PM PS SM SS MAP */
359 { P0, P2, P1, P3 }, /* 00b */
360 { IDE, IDE, P1, P3 }, /* 01b */
361 { P0, P2, IDE, IDE }, /* 10b */
362 { RV, RV, RV, RV },
363 },
364 };
365
366 static const struct piix_map_db ich6m_map_db = {
367 .mask = 0x3,
368 .port_enable = 0x5,
369
370 /* Map 01b isn't specified in the doc but some notebooks use
371 * it anyway. MAP 01b have been spotted on both ICH6M and
372 * ICH7M.
373 */
374 .map = {
375 /* PM PS SM SS MAP */
376 { P0, P2, NA, NA }, /* 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 ich8_map_db = {
384 .mask = 0x3,
385 .port_enable = 0xf,
386 .map = {
387 /* PM PS SM SS MAP */
388 { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */
389 { RV, RV, RV, RV },
390 { P0, P2, IDE, IDE }, /* 10b (IDE mode) */
391 { RV, RV, RV, RV },
392 },
393 };
394
395 static const struct piix_map_db ich8_2port_map_db = {
396 .mask = 0x3,
397 .port_enable = 0x3,
398 .map = {
399 /* PM PS SM SS MAP */
400 { P0, NA, P1, NA }, /* 00b */
401 { RV, RV, RV, RV }, /* 01b */
402 { RV, RV, RV, RV }, /* 10b */
403 { RV, RV, RV, RV },
404 },
405 };
406
407 static const struct piix_map_db ich8m_apple_map_db = {
408 .mask = 0x3,
409 .port_enable = 0x1,
410 .map = {
411 /* PM PS SM SS MAP */
412 { P0, NA, NA, NA }, /* 00b */
413 { RV, RV, RV, RV },
414 { P0, P2, IDE, IDE }, /* 10b */
415 { RV, RV, RV, RV },
416 },
417 };
418
419 static const struct piix_map_db tolapai_map_db = {
420 .mask = 0x3,
421 .port_enable = 0x3,
422 .map = {
423 /* PM PS SM SS MAP */
424 { P0, NA, P1, NA }, /* 00b */
425 { RV, RV, RV, RV }, /* 01b */
426 { RV, RV, RV, RV }, /* 10b */
427 { RV, RV, RV, RV },
428 },
429 };
430
431 static const struct piix_map_db *piix_map_db_table[] = {
432 [ich5_sata] = &ich5_map_db,
433 [ich6_sata] = &ich6_map_db,
434 [ich6m_sata] = &ich6m_map_db,
435 [ich8_sata] = &ich8_map_db,
436 [ich8_2port_sata] = &ich8_2port_map_db,
437 [ich8m_apple_sata] = &ich8m_apple_map_db,
438 [tolapai_sata] = &tolapai_map_db,
439 [ich8_sata_snb] = &ich8_map_db,
440 [ich8_2port_sata_snb] = &ich8_2port_map_db,
441 [ich8_2port_sata_byt] = &ich8_2port_map_db,
442 };
443
444 static const struct pci_bits piix_enable_bits[] = {
445 { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */
446 { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */
447 };
448
449 MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik");
450 MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers");
451 MODULE_LICENSE("GPL");
452 MODULE_DEVICE_TABLE(pci, piix_pci_tbl);
453 MODULE_VERSION(DRV_VERSION);
454
455 struct ich_laptop {
456 u16 device;
457 u16 subvendor;
458 u16 subdevice;
459 };
460
461 /*
462 * List of laptops that use short cables rather than 80 wire
463 */
464
465 static const struct ich_laptop ich_laptop[] = {
466 /* devid, subvendor, subdev */
467 { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */
468 { 0x27DF, 0x1025, 0x0102 }, /* ICH7 on Acer 5602aWLMi */
469 { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */
470 { 0x27DF, 0x1028, 0x02b0 }, /* ICH7 on unknown Dell */
471 { 0x27DF, 0x1043, 0x1267 }, /* ICH7 on Asus W5F */
472 { 0x27DF, 0x103C, 0x30A1 }, /* ICH7 on HP Compaq nc2400 */
473 { 0x27DF, 0x103C, 0x361a }, /* ICH7 on unknown HP */
474 { 0x27DF, 0x1071, 0xD221 }, /* ICH7 on Hercules EC-900 */
475 { 0x27DF, 0x152D, 0x0778 }, /* ICH7 on unknown Intel */
476 { 0x24CA, 0x1025, 0x0061 }, /* ICH4 on ACER Aspire 2023WLMi */
477 { 0x24CA, 0x1025, 0x003d }, /* ICH4 on ACER TM290 */
478 { 0x24CA, 0x10CF, 0x11AB }, /* ICH4M on Fujitsu-Siemens Lifebook S6120 */
479 { 0x266F, 0x1025, 0x0066 }, /* ICH6 on ACER Aspire 1694WLMi */
480 { 0x2653, 0x1043, 0x82D8 }, /* ICH6M on Asus Eee 701 */
481 { 0x27df, 0x104d, 0x900e }, /* ICH7 on Sony TZ-90 */
482 /* end marker */
483 { 0, }
484 };
485
piix_port_start(struct ata_port * ap)486 static int piix_port_start(struct ata_port *ap)
487 {
488 if (!(ap->flags & PIIX_FLAG_PIO16))
489 ap->pflags |= ATA_PFLAG_PIO32 | ATA_PFLAG_PIO32CHANGE;
490
491 return ata_bmdma_port_start(ap);
492 }
493
494 /**
495 * ich_pata_cable_detect - Probe host controller cable detect info
496 * @ap: Port for which cable detect info is desired
497 *
498 * Read 80c cable indicator from ATA PCI device's PCI config
499 * register. This register is normally set by firmware (BIOS).
500 *
501 * LOCKING:
502 * None (inherited from caller).
503 */
504
ich_pata_cable_detect(struct ata_port * ap)505 static int ich_pata_cable_detect(struct ata_port *ap)
506 {
507 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
508 struct piix_host_priv *hpriv = ap->host->private_data;
509 const struct ich_laptop *lap = &ich_laptop[0];
510 u8 mask;
511
512 /* Check for specials */
513 while (lap->device) {
514 if (lap->device == pdev->device &&
515 lap->subvendor == pdev->subsystem_vendor &&
516 lap->subdevice == pdev->subsystem_device)
517 return ATA_CBL_PATA40_SHORT;
518
519 lap++;
520 }
521
522 /* check BIOS cable detect results */
523 mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC;
524 if ((hpriv->saved_iocfg & mask) == 0)
525 return ATA_CBL_PATA40;
526 return ATA_CBL_PATA80;
527 }
528
529 /**
530 * piix_pata_prereset - prereset for PATA host controller
531 * @link: Target link
532 * @deadline: deadline jiffies for the operation
533 *
534 * LOCKING:
535 * None (inherited from caller).
536 */
piix_pata_prereset(struct ata_link * link,unsigned long deadline)537 static int piix_pata_prereset(struct ata_link *link, unsigned long deadline)
538 {
539 struct ata_port *ap = link->ap;
540 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
541
542 if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no]))
543 return -ENOENT;
544 return ata_sff_prereset(link, deadline);
545 }
546
547 static DEFINE_SPINLOCK(piix_lock);
548
piix_set_timings(struct ata_port * ap,struct ata_device * adev,u8 pio)549 static void piix_set_timings(struct ata_port *ap, struct ata_device *adev,
550 u8 pio)
551 {
552 struct pci_dev *dev = to_pci_dev(ap->host->dev);
553 unsigned long flags;
554 unsigned int is_slave = (adev->devno != 0);
555 unsigned int master_port= ap->port_no ? 0x42 : 0x40;
556 unsigned int slave_port = 0x44;
557 u16 master_data;
558 u8 slave_data;
559 u8 udma_enable;
560 int control = 0;
561
562 /*
563 * See Intel Document 298600-004 for the timing programing rules
564 * for ICH controllers.
565 */
566
567 static const /* ISP RTC */
568 u8 timings[][2] = { { 0, 0 },
569 { 0, 0 },
570 { 1, 0 },
571 { 2, 1 },
572 { 2, 3 }, };
573
574 if (pio >= 2)
575 control |= 1; /* TIME1 enable */
576 if (ata_pio_need_iordy(adev))
577 control |= 2; /* IE enable */
578 /* Intel specifies that the PPE functionality is for disk only */
579 if (adev->class == ATA_DEV_ATA)
580 control |= 4; /* PPE enable */
581 /*
582 * If the drive MWDMA is faster than it can do PIO then
583 * we must force PIO into PIO0
584 */
585 if (adev->pio_mode < XFER_PIO_0 + pio)
586 /* Enable DMA timing only */
587 control |= 8; /* PIO cycles in PIO0 */
588
589 spin_lock_irqsave(&piix_lock, flags);
590
591 /* PIO configuration clears DTE unconditionally. It will be
592 * programmed in set_dmamode which is guaranteed to be called
593 * after set_piomode if any DMA mode is available.
594 */
595 pci_read_config_word(dev, master_port, &master_data);
596 if (is_slave) {
597 /* clear TIME1|IE1|PPE1|DTE1 */
598 master_data &= 0xff0f;
599 /* enable PPE1, IE1 and TIME1 as needed */
600 master_data |= (control << 4);
601 pci_read_config_byte(dev, slave_port, &slave_data);
602 slave_data &= (ap->port_no ? 0x0f : 0xf0);
603 /* Load the timing nibble for this slave */
604 slave_data |= ((timings[pio][0] << 2) | timings[pio][1])
605 << (ap->port_no ? 4 : 0);
606 } else {
607 /* clear ISP|RCT|TIME0|IE0|PPE0|DTE0 */
608 master_data &= 0xccf0;
609 /* Enable PPE, IE and TIME as appropriate */
610 master_data |= control;
611 /* load ISP and RCT */
612 master_data |=
613 (timings[pio][0] << 12) |
614 (timings[pio][1] << 8);
615 }
616
617 /* Enable SITRE (separate slave timing register) */
618 master_data |= 0x4000;
619 pci_write_config_word(dev, master_port, master_data);
620 if (is_slave)
621 pci_write_config_byte(dev, slave_port, slave_data);
622
623 /* Ensure the UDMA bit is off - it will be turned back on if
624 UDMA is selected */
625
626 if (ap->udma_mask) {
627 pci_read_config_byte(dev, 0x48, &udma_enable);
628 udma_enable &= ~(1 << (2 * ap->port_no + adev->devno));
629 pci_write_config_byte(dev, 0x48, udma_enable);
630 }
631
632 spin_unlock_irqrestore(&piix_lock, flags);
633 }
634
635 /**
636 * piix_set_piomode - Initialize host controller PATA PIO timings
637 * @ap: Port whose timings we are configuring
638 * @adev: Drive in question
639 *
640 * Set PIO mode for device, in host controller PCI config space.
641 *
642 * LOCKING:
643 * None (inherited from caller).
644 */
645
piix_set_piomode(struct ata_port * ap,struct ata_device * adev)646 static void piix_set_piomode(struct ata_port *ap, struct ata_device *adev)
647 {
648 piix_set_timings(ap, adev, adev->pio_mode - XFER_PIO_0);
649 }
650
651 /**
652 * do_pata_set_dmamode - Initialize host controller PATA PIO timings
653 * @ap: Port whose timings we are configuring
654 * @adev: Drive in question
655 * @isich: set if the chip is an ICH device
656 *
657 * Set UDMA mode for device, in host controller PCI config space.
658 *
659 * LOCKING:
660 * None (inherited from caller).
661 */
662
do_pata_set_dmamode(struct ata_port * ap,struct ata_device * adev,int isich)663 static void do_pata_set_dmamode(struct ata_port *ap, struct ata_device *adev, int isich)
664 {
665 struct pci_dev *dev = to_pci_dev(ap->host->dev);
666 unsigned long flags;
667 u8 speed = adev->dma_mode;
668 int devid = adev->devno + 2 * ap->port_no;
669 u8 udma_enable = 0;
670
671 if (speed >= XFER_UDMA_0) {
672 unsigned int udma = speed - XFER_UDMA_0;
673 u16 udma_timing;
674 u16 ideconf;
675 int u_clock, u_speed;
676
677 spin_lock_irqsave(&piix_lock, flags);
678
679 pci_read_config_byte(dev, 0x48, &udma_enable);
680
681 /*
682 * UDMA is handled by a combination of clock switching and
683 * selection of dividers
684 *
685 * Handy rule: Odd modes are UDMATIMx 01, even are 02
686 * except UDMA0 which is 00
687 */
688 u_speed = min(2 - (udma & 1), udma);
689 if (udma == 5)
690 u_clock = 0x1000; /* 100Mhz */
691 else if (udma > 2)
692 u_clock = 1; /* 66Mhz */
693 else
694 u_clock = 0; /* 33Mhz */
695
696 udma_enable |= (1 << devid);
697
698 /* Load the CT/RP selection */
699 pci_read_config_word(dev, 0x4A, &udma_timing);
700 udma_timing &= ~(3 << (4 * devid));
701 udma_timing |= u_speed << (4 * devid);
702 pci_write_config_word(dev, 0x4A, udma_timing);
703
704 if (isich) {
705 /* Select a 33/66/100Mhz clock */
706 pci_read_config_word(dev, 0x54, &ideconf);
707 ideconf &= ~(0x1001 << devid);
708 ideconf |= u_clock << devid;
709 /* For ICH or later we should set bit 10 for better
710 performance (WR_PingPong_En) */
711 pci_write_config_word(dev, 0x54, ideconf);
712 }
713
714 pci_write_config_byte(dev, 0x48, udma_enable);
715
716 spin_unlock_irqrestore(&piix_lock, flags);
717 } else {
718 /* MWDMA is driven by the PIO timings. */
719 unsigned int mwdma = speed - XFER_MW_DMA_0;
720 const unsigned int needed_pio[3] = {
721 XFER_PIO_0, XFER_PIO_3, XFER_PIO_4
722 };
723 int pio = needed_pio[mwdma] - XFER_PIO_0;
724
725 /* XFER_PIO_0 is never used currently */
726 piix_set_timings(ap, adev, pio);
727 }
728 }
729
730 /**
731 * piix_set_dmamode - Initialize host controller PATA DMA timings
732 * @ap: Port whose timings we are configuring
733 * @adev: um
734 *
735 * Set MW/UDMA mode for device, in host controller PCI config space.
736 *
737 * LOCKING:
738 * None (inherited from caller).
739 */
740
piix_set_dmamode(struct ata_port * ap,struct ata_device * adev)741 static void piix_set_dmamode(struct ata_port *ap, struct ata_device *adev)
742 {
743 do_pata_set_dmamode(ap, adev, 0);
744 }
745
746 /**
747 * ich_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
ich_set_dmamode(struct ata_port * ap,struct ata_device * adev)757 static void ich_set_dmamode(struct ata_port *ap, struct ata_device *adev)
758 {
759 do_pata_set_dmamode(ap, adev, 1);
760 }
761
762 /*
763 * Serial ATA Index/Data Pair Superset Registers access
764 *
765 * Beginning from ICH8, there's a sane way to access SCRs using index
766 * and data register pair located at BAR5 which means that we have
767 * separate SCRs for master and slave. This is handled using libata
768 * slave_link facility.
769 */
770 static const int piix_sidx_map[] = {
771 [SCR_STATUS] = 0,
772 [SCR_ERROR] = 2,
773 [SCR_CONTROL] = 1,
774 };
775
piix_sidpr_sel(struct ata_link * link,unsigned int reg)776 static void piix_sidpr_sel(struct ata_link *link, unsigned int reg)
777 {
778 struct ata_port *ap = link->ap;
779 struct piix_host_priv *hpriv = ap->host->private_data;
780
781 iowrite32(((ap->port_no * 2 + link->pmp) << 8) | piix_sidx_map[reg],
782 hpriv->sidpr + PIIX_SIDPR_IDX);
783 }
784
piix_sidpr_scr_read(struct ata_link * link,unsigned int reg,u32 * val)785 static int piix_sidpr_scr_read(struct ata_link *link,
786 unsigned int reg, u32 *val)
787 {
788 struct piix_host_priv *hpriv = link->ap->host->private_data;
789
790 if (reg >= ARRAY_SIZE(piix_sidx_map))
791 return -EINVAL;
792
793 piix_sidpr_sel(link, reg);
794 *val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
795 return 0;
796 }
797
piix_sidpr_scr_write(struct ata_link * link,unsigned int reg,u32 val)798 static int piix_sidpr_scr_write(struct ata_link *link,
799 unsigned int reg, u32 val)
800 {
801 struct piix_host_priv *hpriv = link->ap->host->private_data;
802
803 if (reg >= ARRAY_SIZE(piix_sidx_map))
804 return -EINVAL;
805
806 piix_sidpr_sel(link, reg);
807 iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
808 return 0;
809 }
810
piix_sidpr_set_lpm(struct ata_link * link,enum ata_lpm_policy policy,unsigned hints)811 static int piix_sidpr_set_lpm(struct ata_link *link, enum ata_lpm_policy policy,
812 unsigned hints)
813 {
814 return sata_link_scr_lpm(link, policy, false);
815 }
816
piix_irq_check(struct ata_port * ap)817 static bool piix_irq_check(struct ata_port *ap)
818 {
819 if (unlikely(!ap->ioaddr.bmdma_addr))
820 return false;
821
822 return ap->ops->bmdma_status(ap) & ATA_DMA_INTR;
823 }
824
825 #ifdef CONFIG_PM_SLEEP
piix_broken_suspend(void)826 static int piix_broken_suspend(void)
827 {
828 static const struct dmi_system_id sysids[] = {
829 {
830 .ident = "TECRA M3",
831 .matches = {
832 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
833 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M3"),
834 },
835 },
836 {
837 .ident = "TECRA M3",
838 .matches = {
839 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
840 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M3"),
841 },
842 },
843 {
844 .ident = "TECRA M3",
845 .matches = {
846 DMI_MATCH(DMI_OEM_STRING, "Tecra M3,"),
847 },
848 },
849 {
850 .ident = "TECRA M4",
851 .matches = {
852 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
853 DMI_MATCH(DMI_PRODUCT_NAME, "Tecra M4"),
854 },
855 },
856 {
857 .ident = "TECRA M4",
858 .matches = {
859 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
860 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M4"),
861 },
862 },
863 {
864 .ident = "TECRA M5",
865 .matches = {
866 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
867 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M5"),
868 },
869 },
870 {
871 .ident = "TECRA M6",
872 .matches = {
873 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
874 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M6"),
875 },
876 },
877 {
878 .ident = "TECRA M7",
879 .matches = {
880 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
881 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA M7"),
882 },
883 },
884 {
885 .ident = "TECRA A8",
886 .matches = {
887 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
888 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A8"),
889 },
890 },
891 {
892 .ident = "Satellite R20",
893 .matches = {
894 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
895 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R20"),
896 },
897 },
898 {
899 .ident = "Satellite R25",
900 .matches = {
901 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
902 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite R25"),
903 },
904 },
905 {
906 .ident = "Satellite U200",
907 .matches = {
908 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
909 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U200"),
910 },
911 },
912 {
913 .ident = "Satellite U200",
914 .matches = {
915 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
916 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U200"),
917 },
918 },
919 {
920 .ident = "Satellite Pro U200",
921 .matches = {
922 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
923 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE PRO U200"),
924 },
925 },
926 {
927 .ident = "Satellite U205",
928 .matches = {
929 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
930 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite U205"),
931 },
932 },
933 {
934 .ident = "SATELLITE U205",
935 .matches = {
936 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
937 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE U205"),
938 },
939 },
940 {
941 .ident = "Satellite Pro A120",
942 .matches = {
943 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
944 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite Pro A120"),
945 },
946 },
947 {
948 .ident = "Portege M500",
949 .matches = {
950 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
951 DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE M500"),
952 },
953 },
954 {
955 .ident = "VGN-BX297XP",
956 .matches = {
957 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
958 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-BX297XP"),
959 },
960 },
961
962 { } /* terminate list */
963 };
964
965 if (dmi_check_system(sysids))
966 return 1;
967
968 /* TECRA M4 sometimes forgets its identify and reports bogus
969 * DMI information. As the bogus information is a bit
970 * generic, match as many entries as possible. This manual
971 * matching is necessary because dmi_system_id.matches is
972 * limited to four entries.
973 */
974 if (dmi_match(DMI_SYS_VENDOR, "TOSHIBA") &&
975 dmi_match(DMI_PRODUCT_NAME, "000000") &&
976 dmi_match(DMI_PRODUCT_VERSION, "000000") &&
977 dmi_match(DMI_PRODUCT_SERIAL, "000000") &&
978 dmi_match(DMI_BOARD_VENDOR, "TOSHIBA") &&
979 dmi_match(DMI_BOARD_NAME, "Portable PC") &&
980 dmi_match(DMI_BOARD_VERSION, "Version A0"))
981 return 1;
982
983 return 0;
984 }
985
piix_pci_device_suspend(struct pci_dev * pdev,pm_message_t mesg)986 static int piix_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg)
987 {
988 struct ata_host *host = pci_get_drvdata(pdev);
989 unsigned long flags;
990 int rc = 0;
991
992 rc = ata_host_suspend(host, mesg);
993 if (rc)
994 return rc;
995
996 /* Some braindamaged ACPI suspend implementations expect the
997 * controller to be awake on entry; otherwise, it burns cpu
998 * cycles and power trying to do something to the sleeping
999 * beauty.
1000 */
1001 if (piix_broken_suspend() && (mesg.event & PM_EVENT_SLEEP)) {
1002 pci_save_state(pdev);
1003
1004 /* mark its power state as "unknown", since we don't
1005 * know if e.g. the BIOS will change its device state
1006 * when we suspend.
1007 */
1008 if (pdev->current_state == PCI_D0)
1009 pdev->current_state = PCI_UNKNOWN;
1010
1011 /* tell resume that it's waking up from broken suspend */
1012 spin_lock_irqsave(&host->lock, flags);
1013 host->flags |= PIIX_HOST_BROKEN_SUSPEND;
1014 spin_unlock_irqrestore(&host->lock, flags);
1015 } else
1016 ata_pci_device_do_suspend(pdev, mesg);
1017
1018 return 0;
1019 }
1020
piix_pci_device_resume(struct pci_dev * pdev)1021 static int piix_pci_device_resume(struct pci_dev *pdev)
1022 {
1023 struct ata_host *host = pci_get_drvdata(pdev);
1024 unsigned long flags;
1025 int rc;
1026
1027 if (host->flags & PIIX_HOST_BROKEN_SUSPEND) {
1028 spin_lock_irqsave(&host->lock, flags);
1029 host->flags &= ~PIIX_HOST_BROKEN_SUSPEND;
1030 spin_unlock_irqrestore(&host->lock, flags);
1031
1032 pci_set_power_state(pdev, PCI_D0);
1033 pci_restore_state(pdev);
1034
1035 /* PCI device wasn't disabled during suspend. Use
1036 * pci_reenable_device() to avoid affecting the enable
1037 * count.
1038 */
1039 rc = pci_reenable_device(pdev);
1040 if (rc)
1041 dev_err(&pdev->dev,
1042 "failed to enable device after resume (%d)\n",
1043 rc);
1044 } else
1045 rc = ata_pci_device_do_resume(pdev);
1046
1047 if (rc == 0)
1048 ata_host_resume(host);
1049
1050 return rc;
1051 }
1052 #endif
1053
piix_vmw_bmdma_status(struct ata_port * ap)1054 static u8 piix_vmw_bmdma_status(struct ata_port *ap)
1055 {
1056 return ata_bmdma_status(ap) & ~ATA_DMA_ERR;
1057 }
1058
1059 static struct scsi_host_template piix_sht = {
1060 ATA_BMDMA_SHT(DRV_NAME),
1061 };
1062
1063 static struct ata_port_operations piix_sata_ops = {
1064 .inherits = &ata_bmdma32_port_ops,
1065 .sff_irq_check = piix_irq_check,
1066 .port_start = piix_port_start,
1067 };
1068
1069 static struct ata_port_operations piix_pata_ops = {
1070 .inherits = &piix_sata_ops,
1071 .cable_detect = ata_cable_40wire,
1072 .set_piomode = piix_set_piomode,
1073 .set_dmamode = piix_set_dmamode,
1074 .prereset = piix_pata_prereset,
1075 };
1076
1077 static struct ata_port_operations piix_vmw_ops = {
1078 .inherits = &piix_pata_ops,
1079 .bmdma_status = piix_vmw_bmdma_status,
1080 };
1081
1082 static struct ata_port_operations ich_pata_ops = {
1083 .inherits = &piix_pata_ops,
1084 .cable_detect = ich_pata_cable_detect,
1085 .set_dmamode = ich_set_dmamode,
1086 };
1087
1088 static struct device_attribute *piix_sidpr_shost_attrs[] = {
1089 &dev_attr_link_power_management_policy,
1090 NULL
1091 };
1092
1093 static struct scsi_host_template piix_sidpr_sht = {
1094 ATA_BMDMA_SHT(DRV_NAME),
1095 .shost_attrs = piix_sidpr_shost_attrs,
1096 };
1097
1098 static struct ata_port_operations piix_sidpr_sata_ops = {
1099 .inherits = &piix_sata_ops,
1100 .hardreset = sata_std_hardreset,
1101 .scr_read = piix_sidpr_scr_read,
1102 .scr_write = piix_sidpr_scr_write,
1103 .set_lpm = piix_sidpr_set_lpm,
1104 };
1105
1106 static struct ata_port_info piix_port_info[] = {
1107 [piix_pata_mwdma] = /* PIIX3 MWDMA only */
1108 {
1109 .flags = PIIX_PATA_FLAGS,
1110 .pio_mask = ATA_PIO4,
1111 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1112 .port_ops = &piix_pata_ops,
1113 },
1114
1115 [piix_pata_33] = /* PIIX4 at 33MHz */
1116 {
1117 .flags = PIIX_PATA_FLAGS,
1118 .pio_mask = ATA_PIO4,
1119 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1120 .udma_mask = ATA_UDMA2,
1121 .port_ops = &piix_pata_ops,
1122 },
1123
1124 [ich_pata_33] = /* ICH0 - ICH at 33Mhz*/
1125 {
1126 .flags = PIIX_PATA_FLAGS,
1127 .pio_mask = ATA_PIO4,
1128 .mwdma_mask = ATA_MWDMA12_ONLY, /* Check: maybe MWDMA0 is ok */
1129 .udma_mask = ATA_UDMA2,
1130 .port_ops = &ich_pata_ops,
1131 },
1132
1133 [ich_pata_66] = /* ICH controllers up to 66MHz */
1134 {
1135 .flags = PIIX_PATA_FLAGS,
1136 .pio_mask = ATA_PIO4,
1137 .mwdma_mask = ATA_MWDMA12_ONLY, /* MWDMA0 is broken on chip */
1138 .udma_mask = ATA_UDMA4,
1139 .port_ops = &ich_pata_ops,
1140 },
1141
1142 [ich_pata_100] =
1143 {
1144 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
1145 .pio_mask = ATA_PIO4,
1146 .mwdma_mask = ATA_MWDMA12_ONLY,
1147 .udma_mask = ATA_UDMA5,
1148 .port_ops = &ich_pata_ops,
1149 },
1150
1151 [ich_pata_100_nomwdma1] =
1152 {
1153 .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR,
1154 .pio_mask = ATA_PIO4,
1155 .mwdma_mask = ATA_MWDMA2_ONLY,
1156 .udma_mask = ATA_UDMA5,
1157 .port_ops = &ich_pata_ops,
1158 },
1159
1160 [ich5_sata] =
1161 {
1162 .flags = PIIX_SATA_FLAGS,
1163 .pio_mask = ATA_PIO4,
1164 .mwdma_mask = ATA_MWDMA2,
1165 .udma_mask = ATA_UDMA6,
1166 .port_ops = &piix_sata_ops,
1167 },
1168
1169 [ich6_sata] =
1170 {
1171 .flags = PIIX_SATA_FLAGS,
1172 .pio_mask = ATA_PIO4,
1173 .mwdma_mask = ATA_MWDMA2,
1174 .udma_mask = ATA_UDMA6,
1175 .port_ops = &piix_sata_ops,
1176 },
1177
1178 [ich6m_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 [ich8_sata] =
1188 {
1189 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
1190 .pio_mask = ATA_PIO4,
1191 .mwdma_mask = ATA_MWDMA2,
1192 .udma_mask = ATA_UDMA6,
1193 .port_ops = &piix_sata_ops,
1194 },
1195
1196 [ich8_2port_sata] =
1197 {
1198 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR,
1199 .pio_mask = ATA_PIO4,
1200 .mwdma_mask = ATA_MWDMA2,
1201 .udma_mask = ATA_UDMA6,
1202 .port_ops = &piix_sata_ops,
1203 },
1204
1205 [tolapai_sata] =
1206 {
1207 .flags = PIIX_SATA_FLAGS,
1208 .pio_mask = ATA_PIO4,
1209 .mwdma_mask = ATA_MWDMA2,
1210 .udma_mask = ATA_UDMA6,
1211 .port_ops = &piix_sata_ops,
1212 },
1213
1214 [ich8m_apple_sata] =
1215 {
1216 .flags = PIIX_SATA_FLAGS,
1217 .pio_mask = ATA_PIO4,
1218 .mwdma_mask = ATA_MWDMA2,
1219 .udma_mask = ATA_UDMA6,
1220 .port_ops = &piix_sata_ops,
1221 },
1222
1223 [piix_pata_vmw] =
1224 {
1225 .flags = PIIX_PATA_FLAGS,
1226 .pio_mask = ATA_PIO4,
1227 .mwdma_mask = ATA_MWDMA12_ONLY, /* mwdma1-2 ?? CHECK 0 should be ok but slow */
1228 .udma_mask = ATA_UDMA2,
1229 .port_ops = &piix_vmw_ops,
1230 },
1231
1232 /*
1233 * some Sandybridge chipsets have broken 32 mode up to now,
1234 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592
1235 */
1236 [ich8_sata_snb] =
1237 {
1238 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
1239 .pio_mask = ATA_PIO4,
1240 .mwdma_mask = ATA_MWDMA2,
1241 .udma_mask = ATA_UDMA6,
1242 .port_ops = &piix_sata_ops,
1243 },
1244
1245 [ich8_2port_sata_snb] =
1246 {
1247 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR
1248 | PIIX_FLAG_PIO16,
1249 .pio_mask = ATA_PIO4,
1250 .mwdma_mask = ATA_MWDMA2,
1251 .udma_mask = ATA_UDMA6,
1252 .port_ops = &piix_sata_ops,
1253 },
1254
1255 [ich8_2port_sata_byt] =
1256 {
1257 .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR | PIIX_FLAG_PIO16,
1258 .pio_mask = ATA_PIO4,
1259 .mwdma_mask = ATA_MWDMA2,
1260 .udma_mask = ATA_UDMA6,
1261 .port_ops = &piix_sata_ops,
1262 },
1263
1264 };
1265
1266 #define AHCI_PCI_BAR 5
1267 #define AHCI_GLOBAL_CTL 0x04
1268 #define AHCI_ENABLE (1 << 31)
piix_disable_ahci(struct pci_dev * pdev)1269 static int piix_disable_ahci(struct pci_dev *pdev)
1270 {
1271 void __iomem *mmio;
1272 u32 tmp;
1273 int rc = 0;
1274
1275 /* BUG: pci_enable_device has not yet been called. This
1276 * works because this device is usually set up by BIOS.
1277 */
1278
1279 if (!pci_resource_start(pdev, AHCI_PCI_BAR) ||
1280 !pci_resource_len(pdev, AHCI_PCI_BAR))
1281 return 0;
1282
1283 mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64);
1284 if (!mmio)
1285 return -ENOMEM;
1286
1287 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1288 if (tmp & AHCI_ENABLE) {
1289 tmp &= ~AHCI_ENABLE;
1290 iowrite32(tmp, mmio + AHCI_GLOBAL_CTL);
1291
1292 tmp = ioread32(mmio + AHCI_GLOBAL_CTL);
1293 if (tmp & AHCI_ENABLE)
1294 rc = -EIO;
1295 }
1296
1297 pci_iounmap(pdev, mmio);
1298 return rc;
1299 }
1300
1301 /**
1302 * piix_check_450nx_errata - Check for problem 450NX setup
1303 * @ata_dev: the PCI device to check
1304 *
1305 * Check for the present of 450NX errata #19 and errata #25. If
1306 * they are found return an error code so we can turn off DMA
1307 */
1308
piix_check_450nx_errata(struct pci_dev * ata_dev)1309 static int piix_check_450nx_errata(struct pci_dev *ata_dev)
1310 {
1311 struct pci_dev *pdev = NULL;
1312 u16 cfg;
1313 int no_piix_dma = 0;
1314
1315 while ((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) {
1316 /* Look for 450NX PXB. Check for problem configurations
1317 A PCI quirk checks bit 6 already */
1318 pci_read_config_word(pdev, 0x41, &cfg);
1319 /* Only on the original revision: IDE DMA can hang */
1320 if (pdev->revision == 0x00)
1321 no_piix_dma = 1;
1322 /* On all revisions below 5 PXB bus lock must be disabled for IDE */
1323 else if (cfg & (1<<14) && pdev->revision < 5)
1324 no_piix_dma = 2;
1325 }
1326 if (no_piix_dma)
1327 dev_warn(&ata_dev->dev,
1328 "450NX errata present, disabling IDE DMA%s\n",
1329 no_piix_dma == 2 ? " - a BIOS update may resolve this"
1330 : "");
1331
1332 return no_piix_dma;
1333 }
1334
piix_init_pcs(struct ata_host * host,const struct piix_map_db * map_db)1335 static void piix_init_pcs(struct ata_host *host,
1336 const struct piix_map_db *map_db)
1337 {
1338 struct pci_dev *pdev = to_pci_dev(host->dev);
1339 u16 pcs, new_pcs;
1340
1341 pci_read_config_word(pdev, ICH5_PCS, &pcs);
1342
1343 new_pcs = pcs | map_db->port_enable;
1344
1345 if (new_pcs != pcs) {
1346 DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs);
1347 pci_write_config_word(pdev, ICH5_PCS, new_pcs);
1348 msleep(150);
1349 }
1350 }
1351
piix_init_sata_map(struct pci_dev * pdev,struct ata_port_info * pinfo,const struct piix_map_db * map_db)1352 static const int *piix_init_sata_map(struct pci_dev *pdev,
1353 struct ata_port_info *pinfo,
1354 const struct piix_map_db *map_db)
1355 {
1356 const int *map;
1357 int i, invalid_map = 0;
1358 u8 map_value;
1359 char buf[32];
1360 char *p = buf, *end = buf + sizeof(buf);
1361
1362 pci_read_config_byte(pdev, ICH5_PMR, &map_value);
1363
1364 map = map_db->map[map_value & map_db->mask];
1365
1366 for (i = 0; i < 4; i++) {
1367 switch (map[i]) {
1368 case RV:
1369 invalid_map = 1;
1370 p += scnprintf(p, end - p, " XX");
1371 break;
1372
1373 case NA:
1374 p += scnprintf(p, end - p, " --");
1375 break;
1376
1377 case IDE:
1378 WARN_ON((i & 1) || map[i + 1] != IDE);
1379 pinfo[i / 2] = piix_port_info[ich_pata_100];
1380 i++;
1381 p += scnprintf(p, end - p, " IDE IDE");
1382 break;
1383
1384 default:
1385 p += scnprintf(p, end - p, " P%d", map[i]);
1386 if (i & 1)
1387 pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS;
1388 break;
1389 }
1390 }
1391 dev_info(&pdev->dev, "MAP [%s ]\n", buf);
1392
1393 if (invalid_map)
1394 dev_err(&pdev->dev, "invalid MAP value %u\n", map_value);
1395
1396 return map;
1397 }
1398
piix_no_sidpr(struct ata_host * host)1399 static bool piix_no_sidpr(struct ata_host *host)
1400 {
1401 struct pci_dev *pdev = to_pci_dev(host->dev);
1402
1403 /*
1404 * Samsung DB-P70 only has three ATA ports exposed and
1405 * curiously the unconnected first port reports link online
1406 * while not responding to SRST protocol causing excessive
1407 * detection delay.
1408 *
1409 * Unfortunately, the system doesn't carry enough DMI
1410 * information to identify the machine but does have subsystem
1411 * vendor and device set. As it's unclear whether the
1412 * subsystem vendor/device is used only for this specific
1413 * board, the port can't be disabled solely with the
1414 * information; however, turning off SIDPR access works around
1415 * the problem. Turn it off.
1416 *
1417 * This problem is reported in bnc#441240.
1418 *
1419 * https://bugzilla.novell.com/show_bug.cgi?id=441420
1420 */
1421 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2920 &&
1422 pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG &&
1423 pdev->subsystem_device == 0xb049) {
1424 dev_warn(host->dev,
1425 "Samsung DB-P70 detected, disabling SIDPR\n");
1426 return true;
1427 }
1428
1429 return false;
1430 }
1431
piix_init_sidpr(struct ata_host * host)1432 static int piix_init_sidpr(struct ata_host *host)
1433 {
1434 struct pci_dev *pdev = to_pci_dev(host->dev);
1435 struct piix_host_priv *hpriv = host->private_data;
1436 struct ata_link *link0 = &host->ports[0]->link;
1437 u32 scontrol;
1438 int i, rc;
1439
1440 /* check for availability */
1441 for (i = 0; i < 4; i++)
1442 if (hpriv->map[i] == IDE)
1443 return 0;
1444
1445 /* is it blacklisted? */
1446 if (piix_no_sidpr(host))
1447 return 0;
1448
1449 if (!(host->ports[0]->flags & PIIX_FLAG_SIDPR))
1450 return 0;
1451
1452 if (pci_resource_start(pdev, PIIX_SIDPR_BAR) == 0 ||
1453 pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
1454 return 0;
1455
1456 if (pcim_iomap_regions(pdev, 1 << PIIX_SIDPR_BAR, DRV_NAME))
1457 return 0;
1458
1459 hpriv->sidpr = pcim_iomap_table(pdev)[PIIX_SIDPR_BAR];
1460
1461 /* SCR access via SIDPR doesn't work on some configurations.
1462 * Give it a test drive by inhibiting power save modes which
1463 * we'll do anyway.
1464 */
1465 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1466
1467 /* if IPM is already 3, SCR access is probably working. Don't
1468 * un-inhibit power save modes as BIOS might have inhibited
1469 * them for a reason.
1470 */
1471 if ((scontrol & 0xf00) != 0x300) {
1472 scontrol |= 0x300;
1473 piix_sidpr_scr_write(link0, SCR_CONTROL, scontrol);
1474 piix_sidpr_scr_read(link0, SCR_CONTROL, &scontrol);
1475
1476 if ((scontrol & 0xf00) != 0x300) {
1477 dev_info(host->dev,
1478 "SCR access via SIDPR is available but doesn't work\n");
1479 return 0;
1480 }
1481 }
1482
1483 /* okay, SCRs available, set ops and ask libata for slave_link */
1484 for (i = 0; i < 2; i++) {
1485 struct ata_port *ap = host->ports[i];
1486
1487 ap->ops = &piix_sidpr_sata_ops;
1488
1489 if (ap->flags & ATA_FLAG_SLAVE_POSS) {
1490 rc = ata_slave_link_init(ap);
1491 if (rc)
1492 return rc;
1493 }
1494 }
1495
1496 return 0;
1497 }
1498
piix_iocfg_bit18_quirk(struct ata_host * host)1499 static void piix_iocfg_bit18_quirk(struct ata_host *host)
1500 {
1501 static const struct dmi_system_id sysids[] = {
1502 {
1503 /* Clevo M570U sets IOCFG bit 18 if the cdrom
1504 * isn't used to boot the system which
1505 * disables the channel.
1506 */
1507 .ident = "M570U",
1508 .matches = {
1509 DMI_MATCH(DMI_SYS_VENDOR, "Clevo Co."),
1510 DMI_MATCH(DMI_PRODUCT_NAME, "M570U"),
1511 },
1512 },
1513
1514 { } /* terminate list */
1515 };
1516 struct pci_dev *pdev = to_pci_dev(host->dev);
1517 struct piix_host_priv *hpriv = host->private_data;
1518
1519 if (!dmi_check_system(sysids))
1520 return;
1521
1522 /* The datasheet says that bit 18 is NOOP but certain systems
1523 * seem to use it to disable a channel. Clear the bit on the
1524 * affected systems.
1525 */
1526 if (hpriv->saved_iocfg & (1 << 18)) {
1527 dev_info(&pdev->dev, "applying IOCFG bit18 quirk\n");
1528 pci_write_config_dword(pdev, PIIX_IOCFG,
1529 hpriv->saved_iocfg & ~(1 << 18));
1530 }
1531 }
1532
piix_broken_system_poweroff(struct pci_dev * pdev)1533 static bool piix_broken_system_poweroff(struct pci_dev *pdev)
1534 {
1535 static const struct dmi_system_id broken_systems[] = {
1536 {
1537 .ident = "HP Compaq 2510p",
1538 .matches = {
1539 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1540 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 2510p"),
1541 },
1542 /* PCI slot number of the controller */
1543 .driver_data = (void *)0x1FUL,
1544 },
1545 {
1546 .ident = "HP Compaq nc6000",
1547 .matches = {
1548 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1549 DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nc6000"),
1550 },
1551 /* PCI slot number of the controller */
1552 .driver_data = (void *)0x1FUL,
1553 },
1554
1555 { } /* terminate list */
1556 };
1557 const struct dmi_system_id *dmi = dmi_first_match(broken_systems);
1558
1559 if (dmi) {
1560 unsigned long slot = (unsigned long)dmi->driver_data;
1561 /* apply the quirk only to on-board controllers */
1562 return slot == PCI_SLOT(pdev->devfn);
1563 }
1564
1565 return false;
1566 }
1567
1568 static int prefer_ms_hyperv = 1;
1569 module_param(prefer_ms_hyperv, int, 0);
1570 MODULE_PARM_DESC(prefer_ms_hyperv,
1571 "Prefer Hyper-V paravirtualization drivers instead of ATA, "
1572 "0 - Use ATA drivers, "
1573 "1 (Default) - Use the paravirtualization drivers.");
1574
piix_ignore_devices_quirk(struct ata_host * host)1575 static void piix_ignore_devices_quirk(struct ata_host *host)
1576 {
1577 #if IS_ENABLED(CONFIG_HYPERV_STORAGE)
1578 static const struct dmi_system_id ignore_hyperv[] = {
1579 {
1580 /* On Hyper-V hypervisors the disks are exposed on
1581 * both the emulated SATA controller and on the
1582 * paravirtualised drivers. The CD/DVD devices
1583 * are only exposed on the emulated controller.
1584 * Request we ignore ATA devices on this host.
1585 */
1586 .ident = "Hyper-V Virtual Machine",
1587 .matches = {
1588 DMI_MATCH(DMI_SYS_VENDOR,
1589 "Microsoft Corporation"),
1590 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
1591 },
1592 },
1593 { } /* terminate list */
1594 };
1595 static const struct dmi_system_id allow_virtual_pc[] = {
1596 {
1597 /* In MS Virtual PC guests the DMI ident is nearly
1598 * identical to a Hyper-V guest. One difference is the
1599 * product version which is used here to identify
1600 * a Virtual PC guest. This entry allows ata_piix to
1601 * drive the emulated hardware.
1602 */
1603 .ident = "MS Virtual PC 2007",
1604 .matches = {
1605 DMI_MATCH(DMI_SYS_VENDOR,
1606 "Microsoft Corporation"),
1607 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
1608 DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
1609 },
1610 },
1611 { } /* terminate list */
1612 };
1613 const struct dmi_system_id *ignore = dmi_first_match(ignore_hyperv);
1614 const struct dmi_system_id *allow = dmi_first_match(allow_virtual_pc);
1615
1616 if (ignore && !allow && prefer_ms_hyperv) {
1617 host->flags |= ATA_HOST_IGNORE_ATA;
1618 dev_info(host->dev, "%s detected, ATA device ignore set\n",
1619 ignore->ident);
1620 }
1621 #endif
1622 }
1623
1624 /**
1625 * piix_init_one - Register PIIX ATA PCI device with kernel services
1626 * @pdev: PCI device to register
1627 * @ent: Entry in piix_pci_tbl matching with @pdev
1628 *
1629 * Called from kernel PCI layer. We probe for combined mode (sigh),
1630 * and then hand over control to libata, for it to do the rest.
1631 *
1632 * LOCKING:
1633 * Inherited from PCI layer (may sleep).
1634 *
1635 * RETURNS:
1636 * Zero on success, or -ERRNO value.
1637 */
1638
piix_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)1639 static int piix_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1640 {
1641 struct device *dev = &pdev->dev;
1642 struct ata_port_info port_info[2];
1643 const struct ata_port_info *ppi[] = { &port_info[0], &port_info[1] };
1644 struct scsi_host_template *sht = &piix_sht;
1645 unsigned long port_flags;
1646 struct ata_host *host;
1647 struct piix_host_priv *hpriv;
1648 int rc;
1649
1650 ata_print_version_once(&pdev->dev, DRV_VERSION);
1651
1652 /* no hotplugging support for later devices (FIXME) */
1653 if (!in_module_init && ent->driver_data >= ich5_sata)
1654 return -ENODEV;
1655
1656 if (piix_broken_system_poweroff(pdev)) {
1657 piix_port_info[ent->driver_data].flags |=
1658 ATA_FLAG_NO_POWEROFF_SPINDOWN |
1659 ATA_FLAG_NO_HIBERNATE_SPINDOWN;
1660 dev_info(&pdev->dev, "quirky BIOS, skipping spindown "
1661 "on poweroff and hibernation\n");
1662 }
1663
1664 port_info[0] = piix_port_info[ent->driver_data];
1665 port_info[1] = piix_port_info[ent->driver_data];
1666
1667 port_flags = port_info[0].flags;
1668
1669 /* enable device and prepare host */
1670 rc = pcim_enable_device(pdev);
1671 if (rc)
1672 return rc;
1673
1674 hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
1675 if (!hpriv)
1676 return -ENOMEM;
1677
1678 /* Save IOCFG, this will be used for cable detection, quirk
1679 * detection and restoration on detach. This is necessary
1680 * because some ACPI implementations mess up cable related
1681 * bits on _STM. Reported on kernel bz#11879.
1682 */
1683 pci_read_config_dword(pdev, PIIX_IOCFG, &hpriv->saved_iocfg);
1684
1685 /* ICH6R may be driven by either ata_piix or ahci driver
1686 * regardless of BIOS configuration. Make sure AHCI mode is
1687 * off.
1688 */
1689 if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x2652) {
1690 rc = piix_disable_ahci(pdev);
1691 if (rc)
1692 return rc;
1693 }
1694
1695 /* SATA map init can change port_info, do it before prepping host */
1696 if (port_flags & ATA_FLAG_SATA)
1697 hpriv->map = piix_init_sata_map(pdev, port_info,
1698 piix_map_db_table[ent->driver_data]);
1699
1700 rc = ata_pci_bmdma_prepare_host(pdev, ppi, &host);
1701 if (rc)
1702 return rc;
1703 host->private_data = hpriv;
1704
1705 /* initialize controller */
1706 if (port_flags & ATA_FLAG_SATA) {
1707 piix_init_pcs(host, piix_map_db_table[ent->driver_data]);
1708 rc = piix_init_sidpr(host);
1709 if (rc)
1710 return rc;
1711 if (host->ports[0]->ops == &piix_sidpr_sata_ops)
1712 sht = &piix_sidpr_sht;
1713 }
1714
1715 /* apply IOCFG bit18 quirk */
1716 piix_iocfg_bit18_quirk(host);
1717
1718 /* On ICH5, some BIOSen disable the interrupt using the
1719 * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3.
1720 * On ICH6, this bit has the same effect, but only when
1721 * MSI is disabled (and it is disabled, as we don't use
1722 * message-signalled interrupts currently).
1723 */
1724 if (port_flags & PIIX_FLAG_CHECKINTR)
1725 pci_intx(pdev, 1);
1726
1727 if (piix_check_450nx_errata(pdev)) {
1728 /* This writes into the master table but it does not
1729 really matter for this errata as we will apply it to
1730 all the PIIX devices on the board */
1731 host->ports[0]->mwdma_mask = 0;
1732 host->ports[0]->udma_mask = 0;
1733 host->ports[1]->mwdma_mask = 0;
1734 host->ports[1]->udma_mask = 0;
1735 }
1736 host->flags |= ATA_HOST_PARALLEL_SCAN;
1737
1738 /* Allow hosts to specify device types to ignore when scanning. */
1739 piix_ignore_devices_quirk(host);
1740
1741 pci_set_master(pdev);
1742 return ata_pci_sff_activate_host(host, ata_bmdma_interrupt, sht);
1743 }
1744
piix_remove_one(struct pci_dev * pdev)1745 static void piix_remove_one(struct pci_dev *pdev)
1746 {
1747 struct ata_host *host = pci_get_drvdata(pdev);
1748 struct piix_host_priv *hpriv = host->private_data;
1749
1750 pci_write_config_dword(pdev, PIIX_IOCFG, hpriv->saved_iocfg);
1751
1752 ata_pci_remove_one(pdev);
1753 }
1754
1755 static struct pci_driver piix_pci_driver = {
1756 .name = DRV_NAME,
1757 .id_table = piix_pci_tbl,
1758 .probe = piix_init_one,
1759 .remove = piix_remove_one,
1760 #ifdef CONFIG_PM_SLEEP
1761 .suspend = piix_pci_device_suspend,
1762 .resume = piix_pci_device_resume,
1763 #endif
1764 };
1765
piix_init(void)1766 static int __init piix_init(void)
1767 {
1768 int rc;
1769
1770 DPRINTK("pci_register_driver\n");
1771 rc = pci_register_driver(&piix_pci_driver);
1772 if (rc)
1773 return rc;
1774
1775 in_module_init = 0;
1776
1777 DPRINTK("done\n");
1778 return 0;
1779 }
1780
piix_exit(void)1781 static void __exit piix_exit(void)
1782 {
1783 pci_unregister_driver(&piix_pci_driver);
1784 }
1785
1786 module_init(piix_init);
1787 module_exit(piix_exit);
1788