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1da177e4 | 1 | /* |
af36d7f0 JG |
2 | * ata_piix.c - Intel PATA/SATA controllers |
3 | * | |
4 | * Maintained by: Jeff Garzik <jgarzik@pobox.com> | |
5 | * Please ALWAYS copy linux-ide@vger.kernel.org | |
6 | * on emails. | |
7 | * | |
8 | * | |
9 | * Copyright 2003-2005 Red Hat Inc | |
10 | * Copyright 2003-2005 Jeff Garzik | |
11 | * | |
12 | * | |
13 | * Copyright header from piix.c: | |
14 | * | |
15 | * Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer | |
16 | * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> | |
17 | * Copyright (C) 2003 Red Hat Inc <alan@redhat.com> | |
18 | * | |
19 | * | |
20 | * This program is free software; you can redistribute it and/or modify | |
21 | * it under the terms of the GNU General Public License as published by | |
22 | * the Free Software Foundation; either version 2, or (at your option) | |
23 | * any later version. | |
24 | * | |
25 | * This program is distributed in the hope that it will be useful, | |
26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
28 | * GNU General Public License for more details. | |
29 | * | |
30 | * You should have received a copy of the GNU General Public License | |
31 | * along with this program; see the file COPYING. If not, write to | |
32 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
33 | * | |
34 | * | |
35 | * libata documentation is available via 'make {ps|pdf}docs', | |
36 | * as Documentation/DocBook/libata.* | |
37 | * | |
38 | * Hardware documentation available at http://developer.intel.com/ | |
39 | * | |
d96212ed AC |
40 | * Documentation |
41 | * Publically available from Intel web site. Errata documentation | |
42 | * is also publically available. As an aide to anyone hacking on this | |
2c5ff671 | 43 | * driver the list of errata that are relevant is below, going back to |
d96212ed AC |
44 | * PIIX4. Older device documentation is now a bit tricky to find. |
45 | * | |
46 | * The chipsets all follow very much the same design. The orginal Triton | |
47 | * series chipsets do _not_ support independant device timings, but this | |
48 | * is fixed in Triton II. With the odd mobile exception the chips then | |
49 | * change little except in gaining more modes until SATA arrives. This | |
50 | * driver supports only the chips with independant timing (that is those | |
51 | * with SITRE and the 0x44 timing register). See pata_oldpiix and pata_mpiix | |
52 | * for the early chip drivers. | |
53 | * | |
54 | * Errata of note: | |
55 | * | |
56 | * Unfixable | |
57 | * PIIX4 errata #9 - Only on ultra obscure hw | |
58 | * ICH3 errata #13 - Not observed to affect real hw | |
59 | * by Intel | |
60 | * | |
61 | * Things we must deal with | |
62 | * PIIX4 errata #10 - BM IDE hang with non UDMA | |
63 | * (must stop/start dma to recover) | |
64 | * 440MX errata #15 - As PIIX4 errata #10 | |
65 | * PIIX4 errata #15 - Must not read control registers | |
66 | * during a PIO transfer | |
67 | * 440MX errata #13 - As PIIX4 errata #15 | |
68 | * ICH2 errata #21 - DMA mode 0 doesn't work right | |
69 | * ICH0/1 errata #55 - As ICH2 errata #21 | |
70 | * ICH2 spec c #9 - Extra operations needed to handle | |
71 | * drive hotswap [NOT YET SUPPORTED] | |
72 | * ICH2 spec c #20 - IDE PRD must not cross a 64K boundary | |
73 | * and must be dword aligned | |
74 | * ICH2 spec c #24 - UDMA mode 4,5 t85/86 should be 6ns not 3.3 | |
75 | * | |
76 | * Should have been BIOS fixed: | |
77 | * 450NX: errata #19 - DMA hangs on old 450NX | |
78 | * 450NX: errata #20 - DMA hangs on old 450NX | |
79 | * 450NX: errata #25 - Corruption with DMA on old 450NX | |
80 | * ICH3 errata #15 - IDE deadlock under high load | |
81 | * (BIOS must set dev 31 fn 0 bit 23) | |
82 | * ICH3 errata #18 - Don't use native mode | |
1da177e4 LT |
83 | */ |
84 | ||
85 | #include <linux/kernel.h> | |
86 | #include <linux/module.h> | |
87 | #include <linux/pci.h> | |
88 | #include <linux/init.h> | |
89 | #include <linux/blkdev.h> | |
90 | #include <linux/delay.h> | |
6248e647 | 91 | #include <linux/device.h> |
1da177e4 LT |
92 | #include <scsi/scsi_host.h> |
93 | #include <linux/libata.h> | |
94 | ||
95 | #define DRV_NAME "ata_piix" | |
fc085150 | 96 | #define DRV_VERSION "2.00ac7" |
1da177e4 LT |
97 | |
98 | enum { | |
99 | PIIX_IOCFG = 0x54, /* IDE I/O configuration register */ | |
100 | ICH5_PMR = 0x90, /* port mapping register */ | |
101 | ICH5_PCS = 0x92, /* port control and status */ | |
7b6dbd68 | 102 | PIIX_SCC = 0x0A, /* sub-class code register */ |
1da177e4 | 103 | |
d4358048 | 104 | PIIX_FLAG_SCR = (1 << 26), /* SCR available */ |
ff0fc146 TH |
105 | PIIX_FLAG_AHCI = (1 << 27), /* AHCI possible */ |
106 | PIIX_FLAG_CHECKINTR = (1 << 28), /* make sure PCI INTx enabled */ | |
1da177e4 | 107 | |
800b3996 TH |
108 | PIIX_PATA_FLAGS = ATA_FLAG_SLAVE_POSS, |
109 | PIIX_SATA_FLAGS = ATA_FLAG_SATA | PIIX_FLAG_CHECKINTR, | |
b3362f88 | 110 | |
1da177e4 LT |
111 | /* combined mode. if set, PATA is channel 0. |
112 | * if clear, PATA is channel 1. | |
113 | */ | |
6a690df5 HR |
114 | PIIX_PORT_ENABLED = (1 << 0), |
115 | PIIX_PORT_PRESENT = (1 << 4), | |
1da177e4 LT |
116 | |
117 | PIIX_80C_PRI = (1 << 5) | (1 << 4), | |
118 | PIIX_80C_SEC = (1 << 7) | (1 << 6), | |
119 | ||
1d076e5b | 120 | /* controller IDs */ |
669a5db4 JG |
121 | piix_pata_33 = 0, /* PIIX3 or 4 at 33Mhz */ |
122 | ich_pata_33 = 1, /* ICH up to UDMA 33 only */ | |
123 | ich_pata_66 = 2, /* ICH up to 66 Mhz */ | |
124 | ich_pata_100 = 3, /* ICH up to UDMA 100 */ | |
125 | ich_pata_133 = 4, /* ICH up to UDMA 133 */ | |
126 | ich5_sata = 5, | |
5e56a37c TH |
127 | ich6_sata = 6, |
128 | ich6_sata_ahci = 7, | |
129 | ich6m_sata_ahci = 8, | |
130 | ich8_sata_ahci = 9, | |
85cd7251 | 131 | |
d33f58b8 TH |
132 | /* constants for mapping table */ |
133 | P0 = 0, /* port 0 */ | |
134 | P1 = 1, /* port 1 */ | |
135 | P2 = 2, /* port 2 */ | |
136 | P3 = 3, /* port 3 */ | |
137 | IDE = -1, /* IDE */ | |
138 | NA = -2, /* not avaliable */ | |
139 | RV = -3, /* reserved */ | |
140 | ||
7b6dbd68 | 141 | PIIX_AHCI_DEVICE = 6, |
1da177e4 LT |
142 | }; |
143 | ||
d33f58b8 TH |
144 | struct piix_map_db { |
145 | const u32 mask; | |
73291a1c | 146 | const u16 port_enable; |
d33f58b8 TH |
147 | const int map[][4]; |
148 | }; | |
149 | ||
d96715c1 TH |
150 | struct piix_host_priv { |
151 | const int *map; | |
152 | }; | |
153 | ||
1da177e4 LT |
154 | static int piix_init_one (struct pci_dev *pdev, |
155 | const struct pci_device_id *ent); | |
cca3974e | 156 | static void piix_host_stop(struct ata_host *host); |
ccc4672a | 157 | static void piix_pata_error_handler(struct ata_port *ap); |
669a5db4 | 158 | static void ich_pata_error_handler(struct ata_port *ap); |
ccc4672a | 159 | static void piix_sata_error_handler(struct ata_port *ap); |
669a5db4 JG |
160 | static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev); |
161 | static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev); | |
162 | static void ich_set_dmamode (struct ata_port *ap, struct ata_device *adev); | |
1da177e4 LT |
163 | |
164 | static unsigned int in_module_init = 1; | |
165 | ||
3b7d697d | 166 | static const struct pci_device_id piix_pci_tbl[] = { |
1da177e4 | 167 | #ifdef ATA_ENABLE_PATA |
669a5db4 JG |
168 | /* Intel PIIX4 for the 430TX/440BX/MX chipset: UDMA 33 */ |
169 | /* Also PIIX4E (fn3 rev 2) and PIIX4M (fn3 rev 3) */ | |
170 | { 0x8086, 0x7111, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, | |
171 | { 0x8086, 0x24db, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
172 | { 0x8086, 0x25a2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
173 | /* Intel PIIX4 */ | |
174 | { 0x8086, 0x7199, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, | |
175 | /* Intel PIIX4 */ | |
176 | { 0x8086, 0x7601, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, | |
177 | /* Intel PIIX */ | |
178 | { 0x8086, 0x84CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, piix_pata_33 }, | |
179 | /* Intel ICH (i810, i815, i840) UDMA 66*/ | |
180 | { 0x8086, 0x2411, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_66 }, | |
181 | /* Intel ICH0 : UDMA 33*/ | |
182 | { 0x8086, 0x2421, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_33 }, | |
183 | /* Intel ICH2M */ | |
184 | { 0x8086, 0x244A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
185 | /* Intel ICH2 (i810E2, i845, 850, 860) UDMA 100 */ | |
186 | { 0x8086, 0x244B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
187 | /* Intel ICH3M */ | |
188 | { 0x8086, 0x248A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
189 | /* Intel ICH3 (E7500/1) UDMA 100 */ | |
190 | { 0x8086, 0x248B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
191 | /* Intel ICH4 (i845GV, i845E, i852, i855) UDMA 100 */ | |
192 | { 0x8086, 0x24CA, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
193 | { 0x8086, 0x24CB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
194 | /* Intel ICH5 */ | |
195 | { 0x8086, 0x24DB, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 }, | |
196 | /* C-ICH (i810E2) */ | |
197 | { 0x8086, 0x245B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
85cd7251 | 198 | /* ESB (855GME/875P + 6300ESB) UDMA 100 */ |
669a5db4 JG |
199 | { 0x8086, 0x25A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, |
200 | /* ICH6 (and 6) (i915) UDMA 100 */ | |
201 | { 0x8086, 0x266F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
202 | /* ICH7/7-R (i945, i975) UDMA 100*/ | |
203 | { 0x8086, 0x27DF, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_133 }, | |
204 | { 0x8086, 0x269E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich_pata_100 }, | |
1da177e4 LT |
205 | #endif |
206 | ||
207 | /* NOTE: The following PCI ids must be kept in sync with the | |
208 | * list in drivers/pci/quirks.c. | |
209 | */ | |
210 | ||
1d076e5b | 211 | /* 82801EB (ICH5) */ |
1da177e4 | 212 | { 0x8086, 0x24d1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, |
1d076e5b | 213 | /* 82801EB (ICH5) */ |
1da177e4 | 214 | { 0x8086, 0x24df, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, |
1d076e5b | 215 | /* 6300ESB (ICH5 variant with broken PCS present bits) */ |
5e56a37c | 216 | { 0x8086, 0x25a3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, |
1d076e5b | 217 | /* 6300ESB pretending RAID */ |
5e56a37c | 218 | { 0x8086, 0x25b0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich5_sata }, |
1d076e5b | 219 | /* 82801FB/FW (ICH6/ICH6W) */ |
1da177e4 | 220 | { 0x8086, 0x2651, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata }, |
1d076e5b | 221 | /* 82801FR/FRW (ICH6R/ICH6RW) */ |
1c24a412 | 222 | { 0x8086, 0x2652, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci }, |
1d076e5b TH |
223 | /* 82801FBM ICH6M (ICH6R with only port 0 and 2 implemented) */ |
224 | { 0x8086, 0x2653, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci }, | |
225 | /* 82801GB/GR/GH (ICH7, identical to ICH6) */ | |
1c24a412 | 226 | { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci }, |
1d076e5b | 227 | /* 2801GBM/GHM (ICH7M, identical to ICH6M) */ |
c6446a4c | 228 | { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci }, |
f98b6573 | 229 | /* Enterprise Southbridge 2 (631xESB/632xESB) */ |
1c24a412 | 230 | { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci }, |
f98b6573 | 231 | /* SATA Controller 1 IDE (ICH8) */ |
08f12edc | 232 | { 0x8086, 0x2820, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, |
f98b6573 | 233 | /* SATA Controller 2 IDE (ICH8) */ |
08f12edc | 234 | { 0x8086, 0x2825, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, |
f98b6573 | 235 | /* Mobile SATA Controller IDE (ICH8M) */ |
08f12edc | 236 | { 0x8086, 0x2828, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, |
f98b6573 JG |
237 | /* SATA Controller IDE (ICH9) */ |
238 | { 0x8086, 0x2920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, | |
239 | /* SATA Controller IDE (ICH9) */ | |
240 | { 0x8086, 0x2921, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, | |
241 | /* SATA Controller IDE (ICH9) */ | |
242 | { 0x8086, 0x2926, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, | |
243 | /* SATA Controller IDE (ICH9M) */ | |
244 | { 0x8086, 0x2928, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, | |
245 | /* SATA Controller IDE (ICH9M) */ | |
246 | { 0x8086, 0x292d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, | |
247 | /* SATA Controller IDE (ICH9M) */ | |
248 | { 0x8086, 0x292e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_ahci }, | |
1da177e4 LT |
249 | |
250 | { } /* terminate list */ | |
251 | }; | |
252 | ||
253 | static struct pci_driver piix_pci_driver = { | |
254 | .name = DRV_NAME, | |
255 | .id_table = piix_pci_tbl, | |
256 | .probe = piix_init_one, | |
257 | .remove = ata_pci_remove_one, | |
9b847548 JA |
258 | .suspend = ata_pci_device_suspend, |
259 | .resume = ata_pci_device_resume, | |
1da177e4 LT |
260 | }; |
261 | ||
193515d5 | 262 | static struct scsi_host_template piix_sht = { |
1da177e4 LT |
263 | .module = THIS_MODULE, |
264 | .name = DRV_NAME, | |
265 | .ioctl = ata_scsi_ioctl, | |
266 | .queuecommand = ata_scsi_queuecmd, | |
1da177e4 LT |
267 | .can_queue = ATA_DEF_QUEUE, |
268 | .this_id = ATA_SHT_THIS_ID, | |
269 | .sg_tablesize = LIBATA_MAX_PRD, | |
1da177e4 LT |
270 | .cmd_per_lun = ATA_SHT_CMD_PER_LUN, |
271 | .emulated = ATA_SHT_EMULATED, | |
272 | .use_clustering = ATA_SHT_USE_CLUSTERING, | |
273 | .proc_name = DRV_NAME, | |
274 | .dma_boundary = ATA_DMA_BOUNDARY, | |
275 | .slave_configure = ata_scsi_slave_config, | |
ccf68c34 | 276 | .slave_destroy = ata_scsi_slave_destroy, |
1da177e4 | 277 | .bios_param = ata_std_bios_param, |
9b847548 JA |
278 | .resume = ata_scsi_device_resume, |
279 | .suspend = ata_scsi_device_suspend, | |
1da177e4 LT |
280 | }; |
281 | ||
057ace5e | 282 | static const struct ata_port_operations piix_pata_ops = { |
1da177e4 LT |
283 | .port_disable = ata_port_disable, |
284 | .set_piomode = piix_set_piomode, | |
285 | .set_dmamode = piix_set_dmamode, | |
89bad589 | 286 | .mode_filter = ata_pci_default_filter, |
1da177e4 LT |
287 | |
288 | .tf_load = ata_tf_load, | |
289 | .tf_read = ata_tf_read, | |
290 | .check_status = ata_check_status, | |
291 | .exec_command = ata_exec_command, | |
292 | .dev_select = ata_std_dev_select, | |
293 | ||
1da177e4 LT |
294 | .bmdma_setup = ata_bmdma_setup, |
295 | .bmdma_start = ata_bmdma_start, | |
296 | .bmdma_stop = ata_bmdma_stop, | |
297 | .bmdma_status = ata_bmdma_status, | |
298 | .qc_prep = ata_qc_prep, | |
299 | .qc_issue = ata_qc_issue_prot, | |
89bad589 | 300 | .data_xfer = ata_pio_data_xfer, |
1da177e4 | 301 | |
3f037db0 TH |
302 | .freeze = ata_bmdma_freeze, |
303 | .thaw = ata_bmdma_thaw, | |
ccc4672a | 304 | .error_handler = piix_pata_error_handler, |
3f037db0 | 305 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
1da177e4 LT |
306 | |
307 | .irq_handler = ata_interrupt, | |
308 | .irq_clear = ata_bmdma_irq_clear, | |
309 | ||
310 | .port_start = ata_port_start, | |
311 | .port_stop = ata_port_stop, | |
d96715c1 | 312 | .host_stop = piix_host_stop, |
1da177e4 LT |
313 | }; |
314 | ||
669a5db4 JG |
315 | static const struct ata_port_operations ich_pata_ops = { |
316 | .port_disable = ata_port_disable, | |
317 | .set_piomode = piix_set_piomode, | |
318 | .set_dmamode = ich_set_dmamode, | |
319 | .mode_filter = ata_pci_default_filter, | |
320 | ||
321 | .tf_load = ata_tf_load, | |
322 | .tf_read = ata_tf_read, | |
323 | .check_status = ata_check_status, | |
324 | .exec_command = ata_exec_command, | |
325 | .dev_select = ata_std_dev_select, | |
326 | ||
327 | .bmdma_setup = ata_bmdma_setup, | |
328 | .bmdma_start = ata_bmdma_start, | |
329 | .bmdma_stop = ata_bmdma_stop, | |
330 | .bmdma_status = ata_bmdma_status, | |
331 | .qc_prep = ata_qc_prep, | |
332 | .qc_issue = ata_qc_issue_prot, | |
333 | .data_xfer = ata_pio_data_xfer, | |
334 | ||
335 | .freeze = ata_bmdma_freeze, | |
336 | .thaw = ata_bmdma_thaw, | |
337 | .error_handler = ich_pata_error_handler, | |
338 | .post_internal_cmd = ata_bmdma_post_internal_cmd, | |
339 | ||
340 | .irq_handler = ata_interrupt, | |
341 | .irq_clear = ata_bmdma_irq_clear, | |
342 | ||
343 | .port_start = ata_port_start, | |
344 | .port_stop = ata_port_stop, | |
fae07dc3 | 345 | .host_stop = piix_host_stop, |
669a5db4 JG |
346 | }; |
347 | ||
057ace5e | 348 | static const struct ata_port_operations piix_sata_ops = { |
1da177e4 LT |
349 | .port_disable = ata_port_disable, |
350 | ||
351 | .tf_load = ata_tf_load, | |
352 | .tf_read = ata_tf_read, | |
353 | .check_status = ata_check_status, | |
354 | .exec_command = ata_exec_command, | |
355 | .dev_select = ata_std_dev_select, | |
356 | ||
1da177e4 LT |
357 | .bmdma_setup = ata_bmdma_setup, |
358 | .bmdma_start = ata_bmdma_start, | |
359 | .bmdma_stop = ata_bmdma_stop, | |
360 | .bmdma_status = ata_bmdma_status, | |
361 | .qc_prep = ata_qc_prep, | |
362 | .qc_issue = ata_qc_issue_prot, | |
89bad589 | 363 | .data_xfer = ata_pio_data_xfer, |
1da177e4 | 364 | |
3f037db0 TH |
365 | .freeze = ata_bmdma_freeze, |
366 | .thaw = ata_bmdma_thaw, | |
ccc4672a | 367 | .error_handler = piix_sata_error_handler, |
3f037db0 | 368 | .post_internal_cmd = ata_bmdma_post_internal_cmd, |
1da177e4 LT |
369 | |
370 | .irq_handler = ata_interrupt, | |
371 | .irq_clear = ata_bmdma_irq_clear, | |
372 | ||
373 | .port_start = ata_port_start, | |
374 | .port_stop = ata_port_stop, | |
d96715c1 | 375 | .host_stop = piix_host_stop, |
1da177e4 LT |
376 | }; |
377 | ||
d96715c1 | 378 | static const struct piix_map_db ich5_map_db = { |
d33f58b8 | 379 | .mask = 0x7, |
ea35d29e | 380 | .port_enable = 0x3, |
d33f58b8 TH |
381 | .map = { |
382 | /* PM PS SM SS MAP */ | |
383 | { P0, NA, P1, NA }, /* 000b */ | |
384 | { P1, NA, P0, NA }, /* 001b */ | |
385 | { RV, RV, RV, RV }, | |
386 | { RV, RV, RV, RV }, | |
387 | { P0, P1, IDE, IDE }, /* 100b */ | |
388 | { P1, P0, IDE, IDE }, /* 101b */ | |
389 | { IDE, IDE, P0, P1 }, /* 110b */ | |
390 | { IDE, IDE, P1, P0 }, /* 111b */ | |
391 | }, | |
392 | }; | |
393 | ||
d96715c1 | 394 | static const struct piix_map_db ich6_map_db = { |
d33f58b8 | 395 | .mask = 0x3, |
ea35d29e | 396 | .port_enable = 0xf, |
d33f58b8 TH |
397 | .map = { |
398 | /* PM PS SM SS MAP */ | |
79ea24e7 | 399 | { P0, P2, P1, P3 }, /* 00b */ |
d33f58b8 TH |
400 | { IDE, IDE, P1, P3 }, /* 01b */ |
401 | { P0, P2, IDE, IDE }, /* 10b */ | |
402 | { RV, RV, RV, RV }, | |
403 | }, | |
404 | }; | |
405 | ||
d96715c1 | 406 | static const struct piix_map_db ich6m_map_db = { |
d33f58b8 | 407 | .mask = 0x3, |
ea35d29e | 408 | .port_enable = 0x5, |
67083741 TH |
409 | |
410 | /* Map 01b isn't specified in the doc but some notebooks use | |
c6446a4c TH |
411 | * it anyway. MAP 01b have been spotted on both ICH6M and |
412 | * ICH7M. | |
67083741 TH |
413 | */ |
414 | .map = { | |
415 | /* PM PS SM SS MAP */ | |
416 | { P0, P2, RV, RV }, /* 00b */ | |
417 | { IDE, IDE, P1, P3 }, /* 01b */ | |
418 | { P0, P2, IDE, IDE }, /* 10b */ | |
419 | { RV, RV, RV, RV }, | |
420 | }, | |
421 | }; | |
422 | ||
08f12edc JG |
423 | static const struct piix_map_db ich8_map_db = { |
424 | .mask = 0x3, | |
425 | .port_enable = 0x3, | |
08f12edc JG |
426 | .map = { |
427 | /* PM PS SM SS MAP */ | |
158f30c8 | 428 | { P0, P2, P1, P3 }, /* 00b (hardwired when in AHCI) */ |
08f12edc | 429 | { RV, RV, RV, RV }, |
158f30c8 | 430 | { IDE, IDE, NA, NA }, /* 10b (IDE mode) */ |
08f12edc JG |
431 | { RV, RV, RV, RV }, |
432 | }, | |
433 | }; | |
434 | ||
d96715c1 TH |
435 | static const struct piix_map_db *piix_map_db_table[] = { |
436 | [ich5_sata] = &ich5_map_db, | |
d96715c1 TH |
437 | [ich6_sata] = &ich6_map_db, |
438 | [ich6_sata_ahci] = &ich6_map_db, | |
439 | [ich6m_sata_ahci] = &ich6m_map_db, | |
08f12edc | 440 | [ich8_sata_ahci] = &ich8_map_db, |
d96715c1 TH |
441 | }; |
442 | ||
1da177e4 | 443 | static struct ata_port_info piix_port_info[] = { |
669a5db4 | 444 | /* piix_pata_33: 0: PIIX3 or 4 at 33MHz */ |
1d076e5b TH |
445 | { |
446 | .sht = &piix_sht, | |
b3362f88 | 447 | .flags = PIIX_PATA_FLAGS, |
1d076e5b | 448 | .pio_mask = 0x1f, /* pio0-4 */ |
669a5db4 | 449 | .mwdma_mask = 0x06, /* mwdma1-2 ?? CHECK 0 should be ok but slow */ |
1d076e5b TH |
450 | .udma_mask = ATA_UDMA_MASK_40C, |
451 | .port_ops = &piix_pata_ops, | |
452 | }, | |
453 | ||
669a5db4 JG |
454 | /* ich_pata_33: 1 ICH0 - ICH at 33Mhz*/ |
455 | { | |
456 | .sht = &piix_sht, | |
b3362f88 | 457 | .flags = PIIX_PATA_FLAGS, |
669a5db4 JG |
458 | .pio_mask = 0x1f, /* pio 0-4 */ |
459 | .mwdma_mask = 0x06, /* Check: maybe 0x07 */ | |
460 | .udma_mask = ATA_UDMA2, /* UDMA33 */ | |
461 | .port_ops = &ich_pata_ops, | |
462 | }, | |
463 | /* ich_pata_66: 2 ICH controllers up to 66MHz */ | |
1da177e4 LT |
464 | { |
465 | .sht = &piix_sht, | |
b3362f88 | 466 | .flags = PIIX_PATA_FLAGS, |
669a5db4 JG |
467 | .pio_mask = 0x1f, /* pio 0-4 */ |
468 | .mwdma_mask = 0x06, /* MWDMA0 is broken on chip */ | |
469 | .udma_mask = ATA_UDMA4, | |
470 | .port_ops = &ich_pata_ops, | |
471 | }, | |
85cd7251 | 472 | |
669a5db4 JG |
473 | /* ich_pata_100: 3 */ |
474 | { | |
475 | .sht = &piix_sht, | |
b3362f88 | 476 | .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, |
1da177e4 | 477 | .pio_mask = 0x1f, /* pio0-4 */ |
1da177e4 | 478 | .mwdma_mask = 0x06, /* mwdma1-2 */ |
669a5db4 JG |
479 | .udma_mask = ATA_UDMA5, /* udma0-5 */ |
480 | .port_ops = &ich_pata_ops, | |
1da177e4 LT |
481 | }, |
482 | ||
669a5db4 JG |
483 | /* ich_pata_133: 4 ICH with full UDMA6 */ |
484 | { | |
485 | .sht = &piix_sht, | |
b3362f88 | 486 | .flags = PIIX_PATA_FLAGS | PIIX_FLAG_CHECKINTR, |
669a5db4 JG |
487 | .pio_mask = 0x1f, /* pio 0-4 */ |
488 | .mwdma_mask = 0x06, /* Check: maybe 0x07 */ | |
489 | .udma_mask = ATA_UDMA6, /* UDMA133 */ | |
490 | .port_ops = &ich_pata_ops, | |
491 | }, | |
492 | ||
493 | /* ich5_sata: 5 */ | |
1da177e4 LT |
494 | { |
495 | .sht = &piix_sht, | |
228c1590 | 496 | .flags = PIIX_SATA_FLAGS, |
1da177e4 LT |
497 | .pio_mask = 0x1f, /* pio0-4 */ |
498 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
499 | .udma_mask = 0x7f, /* udma0-6 */ | |
500 | .port_ops = &piix_sata_ops, | |
501 | }, | |
502 | ||
5e56a37c | 503 | /* ich6_sata: 6 */ |
1da177e4 LT |
504 | { |
505 | .sht = &piix_sht, | |
b3362f88 | 506 | .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR, |
1da177e4 LT |
507 | .pio_mask = 0x1f, /* pio0-4 */ |
508 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
509 | .udma_mask = 0x7f, /* udma0-6 */ | |
510 | .port_ops = &piix_sata_ops, | |
511 | }, | |
512 | ||
5e56a37c | 513 | /* ich6_sata_ahci: 7 */ |
c368ca4e JG |
514 | { |
515 | .sht = &piix_sht, | |
b3362f88 | 516 | .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | |
d33f58b8 | 517 | PIIX_FLAG_AHCI, |
c368ca4e JG |
518 | .pio_mask = 0x1f, /* pio0-4 */ |
519 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
520 | .udma_mask = 0x7f, /* udma0-6 */ | |
521 | .port_ops = &piix_sata_ops, | |
522 | }, | |
1d076e5b | 523 | |
5e56a37c | 524 | /* ich6m_sata_ahci: 8 */ |
1d076e5b TH |
525 | { |
526 | .sht = &piix_sht, | |
b3362f88 | 527 | .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | |
d33f58b8 | 528 | PIIX_FLAG_AHCI, |
1d076e5b TH |
529 | .pio_mask = 0x1f, /* pio0-4 */ |
530 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
531 | .udma_mask = 0x7f, /* udma0-6 */ | |
532 | .port_ops = &piix_sata_ops, | |
533 | }, | |
08f12edc | 534 | |
5e56a37c | 535 | /* ich8_sata_ahci: 9 */ |
08f12edc JG |
536 | { |
537 | .sht = &piix_sht, | |
b3362f88 | 538 | .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SCR | |
08f12edc JG |
539 | PIIX_FLAG_AHCI, |
540 | .pio_mask = 0x1f, /* pio0-4 */ | |
541 | .mwdma_mask = 0x07, /* mwdma0-2 */ | |
542 | .udma_mask = 0x7f, /* udma0-6 */ | |
543 | .port_ops = &piix_sata_ops, | |
544 | }, | |
669a5db4 | 545 | |
1da177e4 LT |
546 | }; |
547 | ||
548 | static struct pci_bits piix_enable_bits[] = { | |
549 | { 0x41U, 1U, 0x80UL, 0x80UL }, /* port 0 */ | |
550 | { 0x43U, 1U, 0x80UL, 0x80UL }, /* port 1 */ | |
551 | }; | |
552 | ||
553 | MODULE_AUTHOR("Andre Hedrick, Alan Cox, Andrzej Krzysztofowicz, Jeff Garzik"); | |
554 | MODULE_DESCRIPTION("SCSI low-level driver for Intel PIIX/ICH ATA controllers"); | |
555 | MODULE_LICENSE("GPL"); | |
556 | MODULE_DEVICE_TABLE(pci, piix_pci_tbl); | |
557 | MODULE_VERSION(DRV_VERSION); | |
558 | ||
fc085150 AC |
559 | struct ich_laptop { |
560 | u16 device; | |
561 | u16 subvendor; | |
562 | u16 subdevice; | |
563 | }; | |
564 | ||
565 | /* | |
566 | * List of laptops that use short cables rather than 80 wire | |
567 | */ | |
568 | ||
569 | static const struct ich_laptop ich_laptop[] = { | |
570 | /* devid, subvendor, subdev */ | |
571 | { 0x27DF, 0x0005, 0x0280 }, /* ICH7 on Acer 5602WLMi */ | |
babfb682 | 572 | { 0x27DF, 0x1025, 0x0110 }, /* ICH7 on Acer 3682WLMi */ |
fc085150 AC |
573 | /* end marker */ |
574 | { 0, } | |
575 | }; | |
576 | ||
1da177e4 LT |
577 | /** |
578 | * piix_pata_cbl_detect - Probe host controller cable detect info | |
579 | * @ap: Port for which cable detect info is desired | |
580 | * | |
581 | * Read 80c cable indicator from ATA PCI device's PCI config | |
582 | * register. This register is normally set by firmware (BIOS). | |
583 | * | |
584 | * LOCKING: | |
585 | * None (inherited from caller). | |
586 | */ | |
669a5db4 JG |
587 | |
588 | static void ich_pata_cbl_detect(struct ata_port *ap) | |
1da177e4 | 589 | { |
cca3974e | 590 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
fc085150 | 591 | const struct ich_laptop *lap = &ich_laptop[0]; |
1da177e4 LT |
592 | u8 tmp, mask; |
593 | ||
594 | /* no 80c support in host controller? */ | |
595 | if ((ap->udma_mask & ~ATA_UDMA_MASK_40C) == 0) | |
596 | goto cbl40; | |
597 | ||
fc085150 AC |
598 | /* Check for specials - Acer Aspire 5602WLMi */ |
599 | while (lap->device) { | |
600 | if (lap->device == pdev->device && | |
601 | lap->subvendor == pdev->subsystem_vendor && | |
602 | lap->subdevice == pdev->subsystem_device) { | |
603 | ap->cbl = ATA_CBL_PATA40_SHORT; | |
604 | return; | |
605 | } | |
606 | lap++; | |
607 | } | |
608 | ||
1da177e4 | 609 | /* check BIOS cable detect results */ |
2a88d1ac | 610 | mask = ap->port_no == 0 ? PIIX_80C_PRI : PIIX_80C_SEC; |
1da177e4 LT |
611 | pci_read_config_byte(pdev, PIIX_IOCFG, &tmp); |
612 | if ((tmp & mask) == 0) | |
613 | goto cbl40; | |
614 | ||
615 | ap->cbl = ATA_CBL_PATA80; | |
616 | return; | |
617 | ||
618 | cbl40: | |
619 | ap->cbl = ATA_CBL_PATA40; | |
1da177e4 LT |
620 | } |
621 | ||
622 | /** | |
ccc4672a | 623 | * piix_pata_prereset - prereset for PATA host controller |
573db6b8 | 624 | * @ap: Target port |
1da177e4 | 625 | * |
573db6b8 TH |
626 | * |
627 | * LOCKING: | |
628 | * None (inherited from caller). | |
629 | */ | |
ccc4672a | 630 | static int piix_pata_prereset(struct ata_port *ap) |
1da177e4 | 631 | { |
cca3974e | 632 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); |
1da177e4 | 633 | |
c961922b AC |
634 | if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no])) |
635 | return -ENOENT; | |
f20b16ff | 636 | |
669a5db4 | 637 | ap->cbl = ATA_CBL_PATA40; |
ccc4672a TH |
638 | return ata_std_prereset(ap); |
639 | } | |
640 | ||
641 | static void piix_pata_error_handler(struct ata_port *ap) | |
642 | { | |
643 | ata_bmdma_drive_eh(ap, piix_pata_prereset, ata_std_softreset, NULL, | |
644 | ata_std_postreset); | |
1da177e4 LT |
645 | } |
646 | ||
669a5db4 JG |
647 | |
648 | /** | |
649 | * ich_pata_prereset - prereset for PATA host controller | |
650 | * @ap: Target port | |
651 | * | |
652 | * | |
653 | * LOCKING: | |
654 | * None (inherited from caller). | |
655 | */ | |
656 | static int ich_pata_prereset(struct ata_port *ap) | |
657 | { | |
658 | struct pci_dev *pdev = to_pci_dev(ap->host->dev); | |
659 | ||
660 | if (!pci_test_config_bits(pdev, &piix_enable_bits[ap->port_no])) { | |
661 | ata_port_printk(ap, KERN_INFO, "port disabled. ignoring.\n"); | |
662 | ap->eh_context.i.action &= ~ATA_EH_RESET_MASK; | |
663 | return 0; | |
664 | } | |
665 | ||
666 | ich_pata_cbl_detect(ap); | |
667 | ||
668 | return ata_std_prereset(ap); | |
669 | } | |
670 | ||
671 | static void ich_pata_error_handler(struct ata_port *ap) | |
672 | { | |
673 | ata_bmdma_drive_eh(ap, ich_pata_prereset, ata_std_softreset, NULL, | |
674 | ata_std_postreset); | |
675 | } | |
676 | ||
ccc4672a TH |
677 | static void piix_sata_error_handler(struct ata_port *ap) |
678 | { | |
228c1590 | 679 | ata_bmdma_drive_eh(ap, ata_std_prereset, ata_std_softreset, NULL, |
ccc4672a | 680 | ata_std_postreset); |
1da177e4 LT |
681 | } |
682 | ||
683 | /** | |
684 | * piix_set_piomode - Initialize host controller PATA PIO timings | |
685 | * @ap: Port whose timings we are configuring | |
686 | * @adev: um | |
1da177e4 LT |
687 | * |
688 | * Set PIO mode for device, in host controller PCI config space. | |
689 | * | |
690 | * LOCKING: | |
691 | * None (inherited from caller). | |
692 | */ | |
693 | ||
694 | static void piix_set_piomode (struct ata_port *ap, struct ata_device *adev) | |
695 | { | |
696 | unsigned int pio = adev->pio_mode - XFER_PIO_0; | |
cca3974e | 697 | struct pci_dev *dev = to_pci_dev(ap->host->dev); |
1da177e4 | 698 | unsigned int is_slave = (adev->devno != 0); |
2a88d1ac | 699 | unsigned int master_port= ap->port_no ? 0x42 : 0x40; |
1da177e4 LT |
700 | unsigned int slave_port = 0x44; |
701 | u16 master_data; | |
702 | u8 slave_data; | |
669a5db4 JG |
703 | u8 udma_enable; |
704 | int control = 0; | |
85cd7251 | 705 | |
669a5db4 JG |
706 | /* |
707 | * See Intel Document 298600-004 for the timing programing rules | |
708 | * for ICH controllers. | |
709 | */ | |
1da177e4 LT |
710 | |
711 | static const /* ISP RTC */ | |
712 | u8 timings[][2] = { { 0, 0 }, | |
713 | { 0, 0 }, | |
714 | { 1, 0 }, | |
715 | { 2, 1 }, | |
716 | { 2, 3 }, }; | |
717 | ||
669a5db4 JG |
718 | if (pio >= 2) |
719 | control |= 1; /* TIME1 enable */ | |
720 | if (ata_pio_need_iordy(adev)) | |
721 | control |= 2; /* IE enable */ | |
722 | ||
85cd7251 | 723 | /* Intel specifies that the PPE functionality is for disk only */ |
669a5db4 JG |
724 | if (adev->class == ATA_DEV_ATA) |
725 | control |= 4; /* PPE enable */ | |
726 | ||
1da177e4 LT |
727 | pci_read_config_word(dev, master_port, &master_data); |
728 | if (is_slave) { | |
669a5db4 | 729 | /* Enable SITRE (seperate slave timing register) */ |
1da177e4 | 730 | master_data |= 0x4000; |
669a5db4 JG |
731 | /* enable PPE1, IE1 and TIME1 as needed */ |
732 | master_data |= (control << 4); | |
1da177e4 | 733 | pci_read_config_byte(dev, slave_port, &slave_data); |
2a88d1ac | 734 | slave_data &= (ap->port_no ? 0x0f : 0xf0); |
669a5db4 JG |
735 | /* Load the timing nibble for this slave */ |
736 | slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0); | |
1da177e4 | 737 | } else { |
669a5db4 | 738 | /* Master keeps the bits in a different format */ |
1da177e4 | 739 | master_data &= 0xccf8; |
669a5db4 JG |
740 | /* Enable PPE, IE and TIME as appropriate */ |
741 | master_data |= control; | |
1da177e4 LT |
742 | master_data |= |
743 | (timings[pio][0] << 12) | | |
744 | (timings[pio][1] << 8); | |
745 | } | |
746 | pci_write_config_word(dev, master_port, master_data); | |
747 | if (is_slave) | |
748 | pci_write_config_byte(dev, slave_port, slave_data); | |
669a5db4 JG |
749 | |
750 | /* Ensure the UDMA bit is off - it will be turned back on if | |
751 | UDMA is selected */ | |
85cd7251 | 752 | |
669a5db4 JG |
753 | if (ap->udma_mask) { |
754 | pci_read_config_byte(dev, 0x48, &udma_enable); | |
755 | udma_enable &= ~(1 << (2 * ap->port_no + adev->devno)); | |
756 | pci_write_config_byte(dev, 0x48, udma_enable); | |
757 | } | |
1da177e4 LT |
758 | } |
759 | ||
760 | /** | |
669a5db4 | 761 | * do_pata_set_dmamode - Initialize host controller PATA PIO timings |
1da177e4 | 762 | * @ap: Port whose timings we are configuring |
669a5db4 | 763 | * @adev: Drive in question |
1da177e4 | 764 | * @udma: udma mode, 0 - 6 |
c32a8fd7 | 765 | * @isich: set if the chip is an ICH device |
1da177e4 LT |
766 | * |
767 | * Set UDMA mode for device, in host controller PCI config space. | |
768 | * | |
769 | * LOCKING: | |
770 | * None (inherited from caller). | |
771 | */ | |
772 | ||
669a5db4 | 773 | static void do_pata_set_dmamode (struct ata_port *ap, struct ata_device *adev, int isich) |
1da177e4 | 774 | { |
cca3974e | 775 | struct pci_dev *dev = to_pci_dev(ap->host->dev); |
669a5db4 JG |
776 | u8 master_port = ap->port_no ? 0x42 : 0x40; |
777 | u16 master_data; | |
778 | u8 speed = adev->dma_mode; | |
779 | int devid = adev->devno + 2 * ap->port_no; | |
780 | u8 udma_enable; | |
85cd7251 | 781 | |
669a5db4 JG |
782 | static const /* ISP RTC */ |
783 | u8 timings[][2] = { { 0, 0 }, | |
784 | { 0, 0 }, | |
785 | { 1, 0 }, | |
786 | { 2, 1 }, | |
787 | { 2, 3 }, }; | |
788 | ||
789 | pci_read_config_word(dev, master_port, &master_data); | |
790 | pci_read_config_byte(dev, 0x48, &udma_enable); | |
1da177e4 LT |
791 | |
792 | if (speed >= XFER_UDMA_0) { | |
669a5db4 JG |
793 | unsigned int udma = adev->dma_mode - XFER_UDMA_0; |
794 | u16 udma_timing; | |
795 | u16 ideconf; | |
796 | int u_clock, u_speed; | |
85cd7251 | 797 | |
669a5db4 JG |
798 | /* |
799 | * UDMA is handled by a combination of clock switching and | |
85cd7251 JG |
800 | * selection of dividers |
801 | * | |
669a5db4 | 802 | * Handy rule: Odd modes are UDMATIMx 01, even are 02 |
85cd7251 | 803 | * except UDMA0 which is 00 |
669a5db4 JG |
804 | */ |
805 | u_speed = min(2 - (udma & 1), udma); | |
806 | if (udma == 5) | |
807 | u_clock = 0x1000; /* 100Mhz */ | |
808 | else if (udma > 2) | |
809 | u_clock = 1; /* 66Mhz */ | |
810 | else | |
811 | u_clock = 0; /* 33Mhz */ | |
85cd7251 | 812 | |
669a5db4 | 813 | udma_enable |= (1 << devid); |
85cd7251 | 814 | |
669a5db4 JG |
815 | /* Load the CT/RP selection */ |
816 | pci_read_config_word(dev, 0x4A, &udma_timing); | |
817 | udma_timing &= ~(3 << (4 * devid)); | |
818 | udma_timing |= u_speed << (4 * devid); | |
819 | pci_write_config_word(dev, 0x4A, udma_timing); | |
820 | ||
85cd7251 | 821 | if (isich) { |
669a5db4 JG |
822 | /* Select a 33/66/100Mhz clock */ |
823 | pci_read_config_word(dev, 0x54, &ideconf); | |
824 | ideconf &= ~(0x1001 << devid); | |
825 | ideconf |= u_clock << devid; | |
826 | /* For ICH or later we should set bit 10 for better | |
827 | performance (WR_PingPong_En) */ | |
828 | pci_write_config_word(dev, 0x54, ideconf); | |
1da177e4 | 829 | } |
1da177e4 | 830 | } else { |
669a5db4 JG |
831 | /* |
832 | * MWDMA is driven by the PIO timings. We must also enable | |
833 | * IORDY unconditionally along with TIME1. PPE has already | |
834 | * been set when the PIO timing was set. | |
835 | */ | |
836 | unsigned int mwdma = adev->dma_mode - XFER_MW_DMA_0; | |
837 | unsigned int control; | |
838 | u8 slave_data; | |
839 | const unsigned int needed_pio[3] = { | |
840 | XFER_PIO_0, XFER_PIO_3, XFER_PIO_4 | |
841 | }; | |
842 | int pio = needed_pio[mwdma] - XFER_PIO_0; | |
85cd7251 | 843 | |
669a5db4 | 844 | control = 3; /* IORDY|TIME1 */ |
85cd7251 | 845 | |
669a5db4 JG |
846 | /* If the drive MWDMA is faster than it can do PIO then |
847 | we must force PIO into PIO0 */ | |
85cd7251 | 848 | |
669a5db4 JG |
849 | if (adev->pio_mode < needed_pio[mwdma]) |
850 | /* Enable DMA timing only */ | |
851 | control |= 8; /* PIO cycles in PIO0 */ | |
852 | ||
853 | if (adev->devno) { /* Slave */ | |
854 | master_data &= 0xFF4F; /* Mask out IORDY|TIME1|DMAONLY */ | |
855 | master_data |= control << 4; | |
856 | pci_read_config_byte(dev, 0x44, &slave_data); | |
857 | slave_data &= (0x0F + 0xE1 * ap->port_no); | |
858 | /* Load the matching timing */ | |
859 | slave_data |= ((timings[pio][0] << 2) | timings[pio][1]) << (ap->port_no ? 4 : 0); | |
860 | pci_write_config_byte(dev, 0x44, slave_data); | |
861 | } else { /* Master */ | |
85cd7251 | 862 | master_data &= 0xCCF4; /* Mask out IORDY|TIME1|DMAONLY |
669a5db4 JG |
863 | and master timing bits */ |
864 | master_data |= control; | |
865 | master_data |= | |
866 | (timings[pio][0] << 12) | | |
867 | (timings[pio][1] << 8); | |
868 | } | |
869 | udma_enable &= ~(1 << devid); | |
870 | pci_write_config_word(dev, master_port, master_data); | |
1da177e4 | 871 | } |
669a5db4 JG |
872 | /* Don't scribble on 0x48 if the controller does not support UDMA */ |
873 | if (ap->udma_mask) | |
874 | pci_write_config_byte(dev, 0x48, udma_enable); | |
875 | } | |
876 | ||
877 | /** | |
878 | * piix_set_dmamode - Initialize host controller PATA DMA timings | |
879 | * @ap: Port whose timings we are configuring | |
880 | * @adev: um | |
881 | * | |
882 | * Set MW/UDMA mode for device, in host controller PCI config space. | |
883 | * | |
884 | * LOCKING: | |
885 | * None (inherited from caller). | |
886 | */ | |
887 | ||
888 | static void piix_set_dmamode (struct ata_port *ap, struct ata_device *adev) | |
889 | { | |
890 | do_pata_set_dmamode(ap, adev, 0); | |
891 | } | |
892 | ||
893 | /** | |
894 | * ich_set_dmamode - Initialize host controller PATA DMA timings | |
895 | * @ap: Port whose timings we are configuring | |
896 | * @adev: um | |
897 | * | |
898 | * Set MW/UDMA mode for device, in host controller PCI config space. | |
899 | * | |
900 | * LOCKING: | |
901 | * None (inherited from caller). | |
902 | */ | |
903 | ||
904 | static void ich_set_dmamode (struct ata_port *ap, struct ata_device *adev) | |
905 | { | |
906 | do_pata_set_dmamode(ap, adev, 1); | |
1da177e4 LT |
907 | } |
908 | ||
1da177e4 LT |
909 | #define AHCI_PCI_BAR 5 |
910 | #define AHCI_GLOBAL_CTL 0x04 | |
911 | #define AHCI_ENABLE (1 << 31) | |
912 | static int piix_disable_ahci(struct pci_dev *pdev) | |
913 | { | |
ea6ba10b | 914 | void __iomem *mmio; |
1da177e4 LT |
915 | u32 tmp; |
916 | int rc = 0; | |
917 | ||
918 | /* BUG: pci_enable_device has not yet been called. This | |
919 | * works because this device is usually set up by BIOS. | |
920 | */ | |
921 | ||
374b1873 JG |
922 | if (!pci_resource_start(pdev, AHCI_PCI_BAR) || |
923 | !pci_resource_len(pdev, AHCI_PCI_BAR)) | |
1da177e4 | 924 | return 0; |
7b6dbd68 | 925 | |
374b1873 | 926 | mmio = pci_iomap(pdev, AHCI_PCI_BAR, 64); |
1da177e4 LT |
927 | if (!mmio) |
928 | return -ENOMEM; | |
7b6dbd68 | 929 | |
1da177e4 LT |
930 | tmp = readl(mmio + AHCI_GLOBAL_CTL); |
931 | if (tmp & AHCI_ENABLE) { | |
932 | tmp &= ~AHCI_ENABLE; | |
933 | writel(tmp, mmio + AHCI_GLOBAL_CTL); | |
934 | ||
935 | tmp = readl(mmio + AHCI_GLOBAL_CTL); | |
936 | if (tmp & AHCI_ENABLE) | |
937 | rc = -EIO; | |
938 | } | |
7b6dbd68 | 939 | |
374b1873 | 940 | pci_iounmap(pdev, mmio); |
1da177e4 LT |
941 | return rc; |
942 | } | |
943 | ||
c621b140 AC |
944 | /** |
945 | * piix_check_450nx_errata - Check for problem 450NX setup | |
c893a3ae | 946 | * @ata_dev: the PCI device to check |
2e9edbf8 | 947 | * |
c621b140 AC |
948 | * Check for the present of 450NX errata #19 and errata #25. If |
949 | * they are found return an error code so we can turn off DMA | |
950 | */ | |
951 | ||
952 | static int __devinit piix_check_450nx_errata(struct pci_dev *ata_dev) | |
953 | { | |
954 | struct pci_dev *pdev = NULL; | |
955 | u16 cfg; | |
956 | u8 rev; | |
957 | int no_piix_dma = 0; | |
2e9edbf8 | 958 | |
c621b140 AC |
959 | while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL) |
960 | { | |
961 | /* Look for 450NX PXB. Check for problem configurations | |
962 | A PCI quirk checks bit 6 already */ | |
963 | pci_read_config_byte(pdev, PCI_REVISION_ID, &rev); | |
964 | pci_read_config_word(pdev, 0x41, &cfg); | |
965 | /* Only on the original revision: IDE DMA can hang */ | |
31a34fe7 | 966 | if (rev == 0x00) |
c621b140 AC |
967 | no_piix_dma = 1; |
968 | /* On all revisions below 5 PXB bus lock must be disabled for IDE */ | |
31a34fe7 | 969 | else if (cfg & (1<<14) && rev < 5) |
c621b140 AC |
970 | no_piix_dma = 2; |
971 | } | |
31a34fe7 | 972 | if (no_piix_dma) |
c621b140 | 973 | dev_printk(KERN_WARNING, &ata_dev->dev, "450NX errata present, disabling IDE DMA.\n"); |
31a34fe7 | 974 | if (no_piix_dma == 2) |
c621b140 AC |
975 | dev_printk(KERN_WARNING, &ata_dev->dev, "A BIOS update may resolve this.\n"); |
976 | return no_piix_dma; | |
2e9edbf8 | 977 | } |
c621b140 | 978 | |
ea35d29e | 979 | static void __devinit piix_init_pcs(struct pci_dev *pdev, |
9dd9c164 | 980 | struct ata_port_info *pinfo, |
ea35d29e JG |
981 | const struct piix_map_db *map_db) |
982 | { | |
983 | u16 pcs, new_pcs; | |
984 | ||
985 | pci_read_config_word(pdev, ICH5_PCS, &pcs); | |
986 | ||
987 | new_pcs = pcs | map_db->port_enable; | |
988 | ||
989 | if (new_pcs != pcs) { | |
990 | DPRINTK("updating PCS from 0x%x to 0x%x\n", pcs, new_pcs); | |
991 | pci_write_config_word(pdev, ICH5_PCS, new_pcs); | |
992 | msleep(150); | |
993 | } | |
994 | } | |
995 | ||
d33f58b8 | 996 | static void __devinit piix_init_sata_map(struct pci_dev *pdev, |
d96715c1 TH |
997 | struct ata_port_info *pinfo, |
998 | const struct piix_map_db *map_db) | |
d33f58b8 | 999 | { |
d96715c1 | 1000 | struct piix_host_priv *hpriv = pinfo[0].private_data; |
d33f58b8 TH |
1001 | const unsigned int *map; |
1002 | int i, invalid_map = 0; | |
1003 | u8 map_value; | |
1004 | ||
1005 | pci_read_config_byte(pdev, ICH5_PMR, &map_value); | |
1006 | ||
1007 | map = map_db->map[map_value & map_db->mask]; | |
1008 | ||
1009 | dev_printk(KERN_INFO, &pdev->dev, "MAP ["); | |
1010 | for (i = 0; i < 4; i++) { | |
1011 | switch (map[i]) { | |
1012 | case RV: | |
1013 | invalid_map = 1; | |
1014 | printk(" XX"); | |
1015 | break; | |
1016 | ||
1017 | case NA: | |
1018 | printk(" --"); | |
1019 | break; | |
1020 | ||
1021 | case IDE: | |
1022 | WARN_ON((i & 1) || map[i + 1] != IDE); | |
669a5db4 | 1023 | pinfo[i / 2] = piix_port_info[ich_pata_100]; |
f814b75f | 1024 | pinfo[i / 2].private_data = hpriv; |
d33f58b8 TH |
1025 | i++; |
1026 | printk(" IDE IDE"); | |
1027 | break; | |
1028 | ||
1029 | default: | |
1030 | printk(" P%d", map[i]); | |
1031 | if (i & 1) | |
cca3974e | 1032 | pinfo[i / 2].flags |= ATA_FLAG_SLAVE_POSS; |
d33f58b8 TH |
1033 | break; |
1034 | } | |
1035 | } | |
1036 | printk(" ]\n"); | |
1037 | ||
1038 | if (invalid_map) | |
1039 | dev_printk(KERN_ERR, &pdev->dev, | |
1040 | "invalid MAP value %u\n", map_value); | |
1041 | ||
d96715c1 | 1042 | hpriv->map = map; |
d33f58b8 TH |
1043 | } |
1044 | ||
1da177e4 LT |
1045 | /** |
1046 | * piix_init_one - Register PIIX ATA PCI device with kernel services | |
1047 | * @pdev: PCI device to register | |
1048 | * @ent: Entry in piix_pci_tbl matching with @pdev | |
1049 | * | |
1050 | * Called from kernel PCI layer. We probe for combined mode (sigh), | |
1051 | * and then hand over control to libata, for it to do the rest. | |
1052 | * | |
1053 | * LOCKING: | |
1054 | * Inherited from PCI layer (may sleep). | |
1055 | * | |
1056 | * RETURNS: | |
1057 | * Zero on success, or -ERRNO value. | |
1058 | */ | |
1059 | ||
1060 | static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) | |
1061 | { | |
1062 | static int printed_version; | |
d33f58b8 TH |
1063 | struct ata_port_info port_info[2]; |
1064 | struct ata_port_info *ppinfo[2] = { &port_info[0], &port_info[1] }; | |
d96715c1 | 1065 | struct piix_host_priv *hpriv; |
cca3974e | 1066 | unsigned long port_flags; |
1da177e4 LT |
1067 | |
1068 | if (!printed_version++) | |
6248e647 JG |
1069 | dev_printk(KERN_DEBUG, &pdev->dev, |
1070 | "version " DRV_VERSION "\n"); | |
1da177e4 LT |
1071 | |
1072 | /* no hotplugging support (FIXME) */ | |
1073 | if (!in_module_init) | |
1074 | return -ENODEV; | |
1075 | ||
d96715c1 TH |
1076 | hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL); |
1077 | if (!hpriv) | |
1078 | return -ENOMEM; | |
1079 | ||
d33f58b8 TH |
1080 | port_info[0] = piix_port_info[ent->driver_data]; |
1081 | port_info[1] = piix_port_info[ent->driver_data]; | |
d96715c1 TH |
1082 | port_info[0].private_data = hpriv; |
1083 | port_info[1].private_data = hpriv; | |
1da177e4 | 1084 | |
cca3974e | 1085 | port_flags = port_info[0].flags; |
ff0fc146 | 1086 | |
cca3974e | 1087 | if (port_flags & PIIX_FLAG_AHCI) { |
8a60a071 JG |
1088 | u8 tmp; |
1089 | pci_read_config_byte(pdev, PIIX_SCC, &tmp); | |
1090 | if (tmp == PIIX_AHCI_DEVICE) { | |
1091 | int rc = piix_disable_ahci(pdev); | |
1092 | if (rc) | |
1093 | return rc; | |
1094 | } | |
1da177e4 LT |
1095 | } |
1096 | ||
d33f58b8 | 1097 | /* Initialize SATA map */ |
cca3974e | 1098 | if (port_flags & ATA_FLAG_SATA) { |
d96715c1 TH |
1099 | piix_init_sata_map(pdev, port_info, |
1100 | piix_map_db_table[ent->driver_data]); | |
9dd9c164 TH |
1101 | piix_init_pcs(pdev, port_info, |
1102 | piix_map_db_table[ent->driver_data]); | |
ea35d29e | 1103 | } |
1da177e4 LT |
1104 | |
1105 | /* On ICH5, some BIOSen disable the interrupt using the | |
1106 | * PCI_COMMAND_INTX_DISABLE bit added in PCI 2.3. | |
1107 | * On ICH6, this bit has the same effect, but only when | |
1108 | * MSI is disabled (and it is disabled, as we don't use | |
1109 | * message-signalled interrupts currently). | |
1110 | */ | |
cca3974e | 1111 | if (port_flags & PIIX_FLAG_CHECKINTR) |
a04ce0ff | 1112 | pci_intx(pdev, 1); |
1da177e4 | 1113 | |
c621b140 AC |
1114 | if (piix_check_450nx_errata(pdev)) { |
1115 | /* This writes into the master table but it does not | |
1116 | really matter for this errata as we will apply it to | |
1117 | all the PIIX devices on the board */ | |
d33f58b8 TH |
1118 | port_info[0].mwdma_mask = 0; |
1119 | port_info[0].udma_mask = 0; | |
1120 | port_info[1].mwdma_mask = 0; | |
1121 | port_info[1].udma_mask = 0; | |
c621b140 | 1122 | } |
d33f58b8 | 1123 | return ata_pci_init_one(pdev, ppinfo, 2); |
1da177e4 LT |
1124 | } |
1125 | ||
cca3974e | 1126 | static void piix_host_stop(struct ata_host *host) |
d96715c1 | 1127 | { |
cca3974e | 1128 | struct piix_host_priv *hpriv = host->private_data; |
24dd01bf | 1129 | |
cca3974e | 1130 | ata_host_stop(host); |
24dd01bf JG |
1131 | |
1132 | kfree(hpriv); | |
d96715c1 TH |
1133 | } |
1134 | ||
1da177e4 LT |
1135 | static int __init piix_init(void) |
1136 | { | |
1137 | int rc; | |
1138 | ||
b7887196 PR |
1139 | DPRINTK("pci_register_driver\n"); |
1140 | rc = pci_register_driver(&piix_pci_driver); | |
1da177e4 LT |
1141 | if (rc) |
1142 | return rc; | |
1143 | ||
1144 | in_module_init = 0; | |
1145 | ||
1146 | DPRINTK("done\n"); | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1da177e4 LT |
1150 | static void __exit piix_exit(void) |
1151 | { | |
1152 | pci_unregister_driver(&piix_pci_driver); | |
1153 | } | |
1154 | ||
1155 | module_init(piix_init); | |
1156 | module_exit(piix_exit); |