blob: d12f386c150789b87ee9cee66aab20d0e8f61a70 [file] [log] [blame]
Jeff Garzik669a5db2006-08-29 18:12:40 -04001/*
2 * pata_ali.c - ALI 15x3 PATA for new ATA layer
3 * (C) 2005 Red Hat Inc
4 * Alan Cox <alan@redhat.com>
5 *
6 * based in part upon
7 * linux/drivers/ide/pci/alim15x3.c Version 0.17 2003/01/02
8 *
9 * Copyright (C) 1998-2000 Michel Aubry, Maintainer
10 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz, Maintainer
11 * Copyright (C) 1999-2000 CJ, cjtsai@ali.com.tw, Maintainer
12 *
13 * Copyright (C) 1998-2000 Andre Hedrick (andre@linux-ide.org)
14 * May be copied or modified under the terms of the GNU General Public License
15 * Copyright (C) 2002 Alan Cox <alan@redhat.com>
16 * ALi (now ULi M5228) support by Clear Zhang <Clear.Zhang@ali.com.tw>
17 *
18 * Documentation
19 * Chipset documentation available under NDA only
20 *
21 * TODO/CHECK
22 * Cannot have ATAPI on both master & slave for rev < c2 (???) but
23 * otherwise should do atapi DMA.
24 */
25
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <linux/pci.h>
29#include <linux/init.h>
30#include <linux/blkdev.h>
31#include <linux/delay.h>
32#include <scsi/scsi_host.h>
33#include <linux/libata.h>
34#include <linux/dmi.h>
35
36#define DRV_NAME "pata_ali"
Jeff Garzik2a3103c2007-08-31 04:54:06 -040037#define DRV_VERSION "0.7.5"
Jeff Garzik669a5db2006-08-29 18:12:40 -040038
39/*
40 * Cable special cases
41 */
42
Jeff Garzik18552562007-10-03 15:15:40 -040043static const struct dmi_system_id cable_dmi_table[] = {
Jeff Garzik669a5db2006-08-29 18:12:40 -040044 {
45 .ident = "HP Pavilion N5430",
46 .matches = {
47 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
Alan Cox5c8d5202007-07-20 15:34:49 +010048 DMI_MATCH(DMI_BOARD_VERSION, "OmniBook N32N-736"),
Jeff Garzik669a5db2006-08-29 18:12:40 -040049 },
50 },
Daniel Exner03e6f482007-09-11 22:28:36 +020051 {
52 .ident = "Toshiba Satelite S1800-814",
53 .matches = {
54 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
55 DMI_MATCH(DMI_PRODUCT_NAME, "S1800-814"),
56 },
57 },
Jeff Garzik669a5db2006-08-29 18:12:40 -040058 { }
59};
60
61static int ali_cable_override(struct pci_dev *pdev)
62{
63 /* Fujitsu P2000 */
64 if (pdev->subsystem_vendor == 0x10CF && pdev->subsystem_device == 0x10AF)
65 return 1;
Alan Cox8f59a132007-11-19 14:36:28 +000066 /* Mitac 8317 (Winbook-A) and relatives */
67 if (pdev->subsystem_vendor == 0x1071 && pdev->subsystem_device == 0x8317)
68 return 1;
Jeff Garzik669a5db2006-08-29 18:12:40 -040069 /* Systems by DMI */
70 if (dmi_check_system(cable_dmi_table))
71 return 1;
72 return 0;
73}
74
75/**
76 * ali_c2_cable_detect - cable detection
77 * @ap: ATA port
78 *
79 * Perform cable detection for C2 and later revisions
80 */
81
82static int ali_c2_cable_detect(struct ata_port *ap)
83{
84 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
85 u8 ata66;
86
87 /* Certain laptops use short but suitable cables and don't
88 implement the detect logic */
89
90 if (ali_cable_override(pdev))
Alan Coxfc085152006-10-10 14:28:11 -070091 return ATA_CBL_PATA40_SHORT;
Jeff Garzik669a5db2006-08-29 18:12:40 -040092
93 /* Host view cable detect 0x4A bit 0 primary bit 1 secondary
94 Bit set for 40 pin */
95 pci_read_config_byte(pdev, 0x4A, &ata66);
96 if (ata66 & (1 << ap->port_no))
97 return ATA_CBL_PATA40;
98 else
99 return ATA_CBL_PATA80;
100}
101
102/**
Jeff Garzik669a5db2006-08-29 18:12:40 -0400103 * ali_20_filter - filter for earlier ALI DMA
104 * @ap: ALi ATA port
105 * @adev: attached device
106 *
107 * Ensure that we do not do DMA on CD devices. We may be able to
108 * fix that later on. Also ensure we do not do UDMA on WDC drives
109 */
110
Alan Coxa76b62c2007-03-09 09:34:07 -0500111static unsigned long ali_20_filter(struct ata_device *adev, unsigned long mask)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400112{
Tejun Heo8bfa79f2007-01-02 20:19:40 +0900113 char model_num[ATA_ID_PROD_LEN + 1];
Jeff Garzik669a5db2006-08-29 18:12:40 -0400114 /* No DMA on anything but a disk for now */
115 if (adev->class != ATA_DEV_ATA)
116 mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
Tejun Heo8bfa79f2007-01-02 20:19:40 +0900117 ata_id_c_string(adev->id, model_num, ATA_ID_PROD, sizeof(model_num));
Jeff Garzik669a5db2006-08-29 18:12:40 -0400118 if (strstr(model_num, "WDC"))
119 return mask &= ~ATA_MASK_UDMA;
Alan Coxa76b62c2007-03-09 09:34:07 -0500120 return ata_pci_default_filter(adev, mask);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400121}
122
123/**
124 * ali_fifo_control - FIFO manager
125 * @ap: ALi channel to control
126 * @adev: device for FIFO control
127 * @on: 0 for off 1 for on
128 *
129 * Enable or disable the FIFO on a given device. Because of the way the
130 * ALi FIFO works it provides a boost on ATA disk but can be confused by
131 * ATAPI and we must therefore manage it.
132 */
133
134static void ali_fifo_control(struct ata_port *ap, struct ata_device *adev, int on)
135{
136 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
137 int pio_fifo = 0x54 + ap->port_no;
138 u8 fifo;
139 int shift = 4 * adev->devno;
140
141 /* ATA - FIFO on set nibble to 0x05, ATAPI - FIFO off, set nibble to
142 0x00. Not all the docs agree but the behaviour we now use is the
143 one stated in the BIOS Programming Guide */
Jeff Garzik85cd7252006-08-31 00:03:49 -0400144
Jeff Garzik669a5db2006-08-29 18:12:40 -0400145 pci_read_config_byte(pdev, pio_fifo, &fifo);
146 fifo &= ~(0x0F << shift);
147 if (on)
148 fifo |= (on << shift);
149 pci_write_config_byte(pdev, pio_fifo, fifo);
150}
151
152/**
153 * ali_program_modes - load mode registers
154 * @ap: ALi channel to load
155 * @adev: Device the timing is for
156 * @cmd: Command timing
157 * @data: Data timing
158 * @ultra: UDMA timing or zero for off
159 *
160 * Loads the timing registers for cmd/data and disable UDMA if
161 * ultra is zero. If ultra is set then load and enable the UDMA
162 * timing but do not touch the command/data timing.
163 */
164
165static void ali_program_modes(struct ata_port *ap, struct ata_device *adev, struct ata_timing *t, u8 ultra)
166{
167 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
168 int cas = 0x58 + 4 * ap->port_no; /* Command timing */
169 int cbt = 0x59 + 4 * ap->port_no; /* Command timing */
170 int drwt = 0x5A + 4 * ap->port_no + adev->devno; /* R/W timing */
171 int udmat = 0x56 + ap->port_no; /* UDMA timing */
172 int shift = 4 * adev->devno;
173 u8 udma;
174
175 if (t != NULL) {
176 t->setup = FIT(t->setup, 1, 8) & 7;
177 t->act8b = FIT(t->act8b, 1, 8) & 7;
178 t->rec8b = FIT(t->rec8b, 1, 16) & 15;
179 t->active = FIT(t->active, 1, 8) & 7;
180 t->recover = FIT(t->recover, 1, 16) & 15;
181
182 pci_write_config_byte(pdev, cas, t->setup);
183 pci_write_config_byte(pdev, cbt, (t->act8b << 4) | t->rec8b);
184 pci_write_config_byte(pdev, drwt, (t->active << 4) | t->recover);
185 }
186
187 /* Set up the UDMA enable */
188 pci_read_config_byte(pdev, udmat, &udma);
189 udma &= ~(0x0F << shift);
190 udma |= ultra << shift;
191 pci_write_config_byte(pdev, udmat, udma);
192}
193
194/**
195 * ali_set_piomode - set initial PIO mode data
196 * @ap: ATA interface
197 * @adev: ATA device
198 *
199 * Program the ALi registers for PIO mode. FIXME: add timings for
200 * PIO5.
201 */
202
203static void ali_set_piomode(struct ata_port *ap, struct ata_device *adev)
204{
205 struct ata_device *pair = ata_dev_pair(adev);
206 struct ata_timing t;
207 unsigned long T = 1000000000 / 33333; /* PCI clock based */
208
209 ata_timing_compute(adev, adev->pio_mode, &t, T, 1);
210 if (pair) {
211 struct ata_timing p;
212 ata_timing_compute(pair, pair->pio_mode, &p, T, 1);
213 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT);
214 if (pair->dma_mode) {
215 ata_timing_compute(pair, pair->dma_mode, &p, T, 1);
216 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT);
217 }
218 }
219
220 /* PIO FIFO is only permitted on ATA disk */
221 if (adev->class != ATA_DEV_ATA)
222 ali_fifo_control(ap, adev, 0x00);
223 ali_program_modes(ap, adev, &t, 0);
224 if (adev->class == ATA_DEV_ATA)
225 ali_fifo_control(ap, adev, 0x05);
226
227}
228
229/**
230 * ali_set_dmamode - set initial DMA mode data
231 * @ap: ATA interface
232 * @adev: ATA device
233 *
234 * FIXME: MWDMA timings
235 */
236
237static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev)
238{
239 static u8 udma_timing[7] = { 0xC, 0xB, 0xA, 0x9, 0x8, 0xF, 0xD };
240 struct ata_device *pair = ata_dev_pair(adev);
241 struct ata_timing t;
242 unsigned long T = 1000000000 / 33333; /* PCI clock based */
243 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
244
245
246 if (adev->class == ATA_DEV_ATA)
247 ali_fifo_control(ap, adev, 0x08);
248
249 if (adev->dma_mode >= XFER_UDMA_0) {
250 ali_program_modes(ap, adev, NULL, udma_timing[adev->dma_mode - XFER_UDMA_0]);
251 if (adev->dma_mode >= XFER_UDMA_3) {
252 u8 reg4b;
253 pci_read_config_byte(pdev, 0x4B, &reg4b);
254 reg4b |= 1;
255 pci_write_config_byte(pdev, 0x4B, reg4b);
256 }
257 } else {
258 ata_timing_compute(adev, adev->dma_mode, &t, T, 1);
259 if (pair) {
260 struct ata_timing p;
261 ata_timing_compute(pair, pair->pio_mode, &p, T, 1);
262 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT);
263 if (pair->dma_mode) {
264 ata_timing_compute(pair, pair->dma_mode, &p, T, 1);
265 ata_timing_merge(&p, &t, &t, ATA_TIMING_SETUP|ATA_TIMING_8BIT);
266 }
267 }
268 ali_program_modes(ap, adev, &t, 0);
269 }
270}
271
272/**
273 * ali_lock_sectors - Keep older devices to 255 sector mode
Jeff Garzik669a5db2006-08-29 18:12:40 -0400274 * @adev: Device
275 *
276 * Called during the bus probe for each device that is found. We use
277 * this call to lock the sector count of the device to 255 or less on
278 * older ALi controllers. If we didn't do this then large I/O's would
279 * require LBA48 commands which the older ALi requires are issued by
280 * slower PIO methods
281 */
282
Alancd0d3bb2007-03-02 00:56:15 +0000283static void ali_lock_sectors(struct ata_device *adev)
Jeff Garzik669a5db2006-08-29 18:12:40 -0400284{
285 adev->max_sectors = 255;
286}
287
288static struct scsi_host_template ali_sht = {
289 .module = THIS_MODULE,
290 .name = DRV_NAME,
291 .ioctl = ata_scsi_ioctl,
292 .queuecommand = ata_scsi_queuecmd,
293 .can_queue = ATA_DEF_QUEUE,
294 .this_id = ATA_SHT_THIS_ID,
295 .sg_tablesize = LIBATA_MAX_PRD,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400296 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
297 .emulated = ATA_SHT_EMULATED,
298 .use_clustering = ATA_SHT_USE_CLUSTERING,
299 .proc_name = DRV_NAME,
300 .dma_boundary = ATA_DMA_BOUNDARY,
301 .slave_configure = ata_scsi_slave_config,
Tejun Heoafdfe892006-11-29 11:26:47 +0900302 .slave_destroy = ata_scsi_slave_destroy,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400303 .bios_param = ata_std_bios_param,
304};
305
306/*
307 * Port operations for PIO only ALi
308 */
309
310static struct ata_port_operations ali_early_port_ops = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400311 .set_piomode = ali_set_piomode,
312 .tf_load = ata_tf_load,
313 .tf_read = ata_tf_read,
314 .check_status = ata_check_status,
315 .exec_command = ata_exec_command,
316 .dev_select = ata_std_dev_select,
317
318 .freeze = ata_bmdma_freeze,
319 .thaw = ata_bmdma_thaw,
Alan Coxb723d142007-03-26 21:43:37 -0800320 .error_handler = ata_bmdma_error_handler,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400321 .post_internal_cmd = ata_bmdma_post_internal_cmd,
Alan Coxb723d142007-03-26 21:43:37 -0800322 .cable_detect = ata_cable_40wire,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400323
324 .qc_prep = ata_qc_prep,
325 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -0400326
Tejun Heo0d5ff562007-02-01 15:06:36 +0900327 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400328
329 .irq_handler = ata_interrupt,
330 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900331 .irq_on = ata_irq_on,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400332
Alan Cox81ad1832007-08-22 22:55:41 +0100333 .port_start = ata_sff_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400334};
335
336/*
337 * Port operations for DMA capable ALi without cable
338 * detect
339 */
340static struct ata_port_operations ali_20_port_ops = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400341 .set_piomode = ali_set_piomode,
342 .set_dmamode = ali_set_dmamode,
343 .mode_filter = ali_20_filter,
344
345 .tf_load = ata_tf_load,
346 .tf_read = ata_tf_read,
347 .check_status = ata_check_status,
348 .exec_command = ata_exec_command,
349 .dev_select = ata_std_dev_select,
350 .dev_config = ali_lock_sectors,
351
352 .freeze = ata_bmdma_freeze,
353 .thaw = ata_bmdma_thaw,
Alan Coxb723d142007-03-26 21:43:37 -0800354 .error_handler = ata_bmdma_error_handler,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400355 .post_internal_cmd = ata_bmdma_post_internal_cmd,
Alan Coxb723d142007-03-26 21:43:37 -0800356 .cable_detect = ata_cable_40wire,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400357
358 .bmdma_setup = ata_bmdma_setup,
359 .bmdma_start = ata_bmdma_start,
360 .bmdma_stop = ata_bmdma_stop,
361 .bmdma_status = ata_bmdma_status,
362
363 .qc_prep = ata_qc_prep,
364 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -0400365
Tejun Heo0d5ff562007-02-01 15:06:36 +0900366 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400367
368 .irq_handler = ata_interrupt,
369 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900370 .irq_on = ata_irq_on,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400371
Alan Cox81ad1832007-08-22 22:55:41 +0100372 .port_start = ata_sff_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400373};
374
375/*
376 * Port operations for DMA capable ALi with cable detect
377 */
378static struct ata_port_operations ali_c2_port_ops = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400379 .set_piomode = ali_set_piomode,
380 .set_dmamode = ali_set_dmamode,
381 .mode_filter = ata_pci_default_filter,
382 .tf_load = ata_tf_load,
383 .tf_read = ata_tf_read,
384 .check_status = ata_check_status,
385 .exec_command = ata_exec_command,
386 .dev_select = ata_std_dev_select,
387 .dev_config = ali_lock_sectors,
388
389 .freeze = ata_bmdma_freeze,
390 .thaw = ata_bmdma_thaw,
Alan Coxb723d142007-03-26 21:43:37 -0800391 .error_handler = ata_bmdma_error_handler,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400392 .post_internal_cmd = ata_bmdma_post_internal_cmd,
Alan Coxb723d142007-03-26 21:43:37 -0800393 .cable_detect = ali_c2_cable_detect,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400394
395 .bmdma_setup = ata_bmdma_setup,
396 .bmdma_start = ata_bmdma_start,
397 .bmdma_stop = ata_bmdma_stop,
398 .bmdma_status = ata_bmdma_status,
399
400 .qc_prep = ata_qc_prep,
401 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -0400402
Tejun Heo0d5ff562007-02-01 15:06:36 +0900403 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400404
405 .irq_handler = ata_interrupt,
406 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900407 .irq_on = ata_irq_on,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400408
Alan Cox81ad1832007-08-22 22:55:41 +0100409 .port_start = ata_sff_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400410};
411
412/*
413 * Port operations for DMA capable ALi with cable detect and LBA48
414 */
415static struct ata_port_operations ali_c5_port_ops = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400416 .set_piomode = ali_set_piomode,
417 .set_dmamode = ali_set_dmamode,
418 .mode_filter = ata_pci_default_filter,
419 .tf_load = ata_tf_load,
420 .tf_read = ata_tf_read,
421 .check_status = ata_check_status,
422 .exec_command = ata_exec_command,
423 .dev_select = ata_std_dev_select,
424
425 .freeze = ata_bmdma_freeze,
426 .thaw = ata_bmdma_thaw,
Alan Coxb723d142007-03-26 21:43:37 -0800427 .error_handler = ata_bmdma_error_handler,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400428 .post_internal_cmd = ata_bmdma_post_internal_cmd,
Alan Coxb723d142007-03-26 21:43:37 -0800429 .cable_detect = ali_c2_cable_detect,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400430
431 .bmdma_setup = ata_bmdma_setup,
432 .bmdma_start = ata_bmdma_start,
433 .bmdma_stop = ata_bmdma_stop,
434 .bmdma_status = ata_bmdma_status,
435
436 .qc_prep = ata_qc_prep,
437 .qc_issue = ata_qc_issue_prot,
Jeff Garzikbda30282006-09-27 05:41:13 -0400438
Tejun Heo0d5ff562007-02-01 15:06:36 +0900439 .data_xfer = ata_data_xfer,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400440
441 .irq_handler = ata_interrupt,
442 .irq_clear = ata_bmdma_irq_clear,
Akira Iguchi246ce3b2007-01-26 16:27:58 +0900443 .irq_on = ata_irq_on,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400444
Alan Cox81ad1832007-08-22 22:55:41 +0100445 .port_start = ata_sff_port_start,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400446};
447
Alan34d8dfb2006-11-22 17:26:06 +0000448
449/**
450 * ali_init_chipset - chip setup function
451 * @pdev: PCI device of ATA controller
452 *
453 * Perform the setup on the device that must be done both at boot
454 * and at resume time.
455 */
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500456
Alan34d8dfb2006-11-22 17:26:06 +0000457static void ali_init_chipset(struct pci_dev *pdev)
458{
Auke Kok44c10132007-06-08 15:46:36 -0700459 u8 tmp;
Alan34d8dfb2006-11-22 17:26:06 +0000460 struct pci_dev *north, *isa_bridge;
461
Alan34d8dfb2006-11-22 17:26:06 +0000462 /*
463 * The chipset revision selects the driver operations and
464 * mode data.
465 */
466
Auke Kok44c10132007-06-08 15:46:36 -0700467 if (pdev->revision >= 0x20 && pdev->revision < 0xC2) {
Alan34d8dfb2006-11-22 17:26:06 +0000468 /* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */
469 pci_read_config_byte(pdev, 0x4B, &tmp);
470 /* Clear CD-ROM DMA write bit */
471 tmp &= 0x7F;
472 pci_write_config_byte(pdev, 0x4B, tmp);
Auke Kok44c10132007-06-08 15:46:36 -0700473 } else if (pdev->revision >= 0xC2) {
Alan34d8dfb2006-11-22 17:26:06 +0000474 /* Enable cable detection logic */
475 pci_read_config_byte(pdev, 0x4B, &tmp);
476 pci_write_config_byte(pdev, 0x4B, tmp | 0x08);
477 }
Alan8e42a5a2006-12-04 16:36:05 +0000478 north = pci_get_bus_and_slot(0, PCI_DEVFN(0,0));
Alan34d8dfb2006-11-22 17:26:06 +0000479 isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
480
481 if (north && north->vendor == PCI_VENDOR_ID_AL && isa_bridge) {
482 /* Configure the ALi bridge logic. For non ALi rely on BIOS.
483 Set the south bridge enable bit */
484 pci_read_config_byte(isa_bridge, 0x79, &tmp);
Auke Kok44c10132007-06-08 15:46:36 -0700485 if (pdev->revision == 0xC2)
Alan34d8dfb2006-11-22 17:26:06 +0000486 pci_write_config_byte(isa_bridge, 0x79, tmp | 0x04);
Auke Kok44c10132007-06-08 15:46:36 -0700487 else if (pdev->revision > 0xC2 && pdev->revision < 0xC5)
Alan34d8dfb2006-11-22 17:26:06 +0000488 pci_write_config_byte(isa_bridge, 0x79, tmp | 0x02);
489 }
Auke Kok44c10132007-06-08 15:46:36 -0700490 if (pdev->revision >= 0x20) {
Alan34d8dfb2006-11-22 17:26:06 +0000491 /*
492 * CD_ROM DMA on (0x53 bit 0). Enable this even if we want
493 * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control
494 * via 0x54/55.
495 */
496 pci_read_config_byte(pdev, 0x53, &tmp);
Auke Kok44c10132007-06-08 15:46:36 -0700497 if (pdev->revision <= 0x20)
Alan34d8dfb2006-11-22 17:26:06 +0000498 tmp &= ~0x02;
Auke Kok44c10132007-06-08 15:46:36 -0700499 if (pdev->revision >= 0xc7)
Alan34d8dfb2006-11-22 17:26:06 +0000500 tmp |= 0x03;
501 else
502 tmp |= 0x01; /* CD_ROM enable for DMA */
503 pci_write_config_byte(pdev, 0x53, tmp);
504 }
505 pci_dev_put(isa_bridge);
506 pci_dev_put(north);
507 ata_pci_clear_simplex(pdev);
508}
Jeff Garzik669a5db2006-08-29 18:12:40 -0400509/**
510 * ali_init_one - discovery callback
511 * @pdev: PCI device ID
512 * @id: PCI table info
513 *
514 * An ALi IDE interface has been discovered. Figure out what revision
515 * and perform configuration work before handing it to the ATA layer
516 */
517
518static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
519{
Tejun Heo1626aeb2007-05-04 12:43:58 +0200520 static const struct ata_port_info info_early = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400521 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400522 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400523 .pio_mask = 0x1f,
524 .port_ops = &ali_early_port_ops
525 };
526 /* Revision 0x20 added DMA */
Tejun Heo1626aeb2007-05-04 12:43:58 +0200527 static const struct ata_port_info info_20 = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400528 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400529 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400530 .pio_mask = 0x1f,
531 .mwdma_mask = 0x07,
532 .port_ops = &ali_20_port_ops
533 };
534 /* Revision 0x20 with support logic added UDMA */
Tejun Heo1626aeb2007-05-04 12:43:58 +0200535 static const struct ata_port_info info_20_udma = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400536 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400537 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400538 .pio_mask = 0x1f,
Jeff Garzik85cd7252006-08-31 00:03:49 -0400539 .mwdma_mask = 0x07,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400540 .udma_mask = 0x07, /* UDMA33 */
541 .port_ops = &ali_20_port_ops
542 };
543 /* Revision 0xC2 adds UDMA66 */
Tejun Heo1626aeb2007-05-04 12:43:58 +0200544 static const struct ata_port_info info_c2 = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400545 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400546 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400547 .pio_mask = 0x1f,
548 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400549 .udma_mask = ATA_UDMA4,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400550 .port_ops = &ali_c2_port_ops
551 };
Chuck Ebbertee581502007-06-25 19:13:32 -0400552 /* Revision 0xC3 is UDMA66 for now */
Tejun Heo1626aeb2007-05-04 12:43:58 +0200553 static const struct ata_port_info info_c3 = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400554 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400555 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400556 .pio_mask = 0x1f,
557 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400558 .udma_mask = ATA_UDMA4,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400559 .port_ops = &ali_c2_port_ops
560 };
Chuck Ebbertee581502007-06-25 19:13:32 -0400561 /* Revision 0xC4 is UDMA100 */
Tejun Heo1626aeb2007-05-04 12:43:58 +0200562 static const struct ata_port_info info_c4 = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400563 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400564 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400565 .pio_mask = 0x1f,
566 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400567 .udma_mask = ATA_UDMA5,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400568 .port_ops = &ali_c2_port_ops
569 };
570 /* Revision 0xC5 is UDMA133 with LBA48 DMA */
Tejun Heo1626aeb2007-05-04 12:43:58 +0200571 static const struct ata_port_info info_c5 = {
Jeff Garzik669a5db2006-08-29 18:12:40 -0400572 .sht = &ali_sht,
Jeff Garzik1d2808f2007-05-28 06:59:48 -0400573 .flags = ATA_FLAG_SLAVE_POSS,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400574 .pio_mask = 0x1f,
575 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400576 .udma_mask = ATA_UDMA6,
Jeff Garzik669a5db2006-08-29 18:12:40 -0400577 .port_ops = &ali_c5_port_ops
578 };
579
Tejun Heo1626aeb2007-05-04 12:43:58 +0200580 const struct ata_port_info *ppi[] = { NULL, NULL };
Auke Kok44c10132007-06-08 15:46:36 -0700581 u8 tmp;
Alan34d8dfb2006-11-22 17:26:06 +0000582 struct pci_dev *isa_bridge;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400583
Jeff Garzik669a5db2006-08-29 18:12:40 -0400584 /*
585 * The chipset revision selects the driver operations and
586 * mode data.
587 */
588
Auke Kok44c10132007-06-08 15:46:36 -0700589 if (pdev->revision < 0x20) {
Tejun Heo1626aeb2007-05-04 12:43:58 +0200590 ppi[0] = &info_early;
Auke Kok44c10132007-06-08 15:46:36 -0700591 } else if (pdev->revision < 0xC2) {
Tejun Heo1626aeb2007-05-04 12:43:58 +0200592 ppi[0] = &info_20;
Auke Kok44c10132007-06-08 15:46:36 -0700593 } else if (pdev->revision == 0xC2) {
Tejun Heo1626aeb2007-05-04 12:43:58 +0200594 ppi[0] = &info_c2;
Auke Kok44c10132007-06-08 15:46:36 -0700595 } else if (pdev->revision == 0xC3) {
Tejun Heo1626aeb2007-05-04 12:43:58 +0200596 ppi[0] = &info_c3;
Auke Kok44c10132007-06-08 15:46:36 -0700597 } else if (pdev->revision == 0xC4) {
Tejun Heo1626aeb2007-05-04 12:43:58 +0200598 ppi[0] = &info_c4;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400599 } else
Tejun Heo1626aeb2007-05-04 12:43:58 +0200600 ppi[0] = &info_c5;
Jeff Garzik669a5db2006-08-29 18:12:40 -0400601
Alan34d8dfb2006-11-22 17:26:06 +0000602 ali_init_chipset(pdev);
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500603
Jeff Garzik669a5db2006-08-29 18:12:40 -0400604 isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
Auke Kok44c10132007-06-08 15:46:36 -0700605 if (isa_bridge && pdev->revision >= 0x20 && pdev->revision < 0xC2) {
Alan34d8dfb2006-11-22 17:26:06 +0000606 /* Are we paired with a UDMA capable chip */
607 pci_read_config_byte(isa_bridge, 0x5E, &tmp);
608 if ((tmp & 0x1E) == 0x12)
Tejun Heo1626aeb2007-05-04 12:43:58 +0200609 ppi[0] = &info_20_udma;
Alan34d8dfb2006-11-22 17:26:06 +0000610 pci_dev_put(isa_bridge);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400611 }
Tejun Heo1626aeb2007-05-04 12:43:58 +0200612 return ata_pci_init_one(pdev, ppi);
Jeff Garzik669a5db2006-08-29 18:12:40 -0400613}
614
Tejun Heo438ac6d2007-03-02 17:31:26 +0900615#ifdef CONFIG_PM
Alan34d8dfb2006-11-22 17:26:06 +0000616static int ali_reinit_one(struct pci_dev *pdev)
617{
618 ali_init_chipset(pdev);
619 return ata_pci_device_resume(pdev);
620}
Tejun Heo438ac6d2007-03-02 17:31:26 +0900621#endif
Alan34d8dfb2006-11-22 17:26:06 +0000622
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400623static const struct pci_device_id ali[] = {
624 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5228), },
625 { PCI_VDEVICE(AL, PCI_DEVICE_ID_AL_M5229), },
626
627 { },
Jeff Garzik669a5db2006-08-29 18:12:40 -0400628};
629
630static struct pci_driver ali_pci_driver = {
631 .name = DRV_NAME,
632 .id_table = ali,
633 .probe = ali_init_one,
Alan34d8dfb2006-11-22 17:26:06 +0000634 .remove = ata_pci_remove_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900635#ifdef CONFIG_PM
Alan34d8dfb2006-11-22 17:26:06 +0000636 .suspend = ata_pci_device_suspend,
637 .resume = ali_reinit_one,
Tejun Heo438ac6d2007-03-02 17:31:26 +0900638#endif
Jeff Garzik669a5db2006-08-29 18:12:40 -0400639};
640
641static int __init ali_init(void)
642{
643 return pci_register_driver(&ali_pci_driver);
644}
645
646
647static void __exit ali_exit(void)
648{
649 pci_unregister_driver(&ali_pci_driver);
650}
651
652
653MODULE_AUTHOR("Alan Cox");
654MODULE_DESCRIPTION("low-level driver for ALi PATA");
655MODULE_LICENSE("GPL");
656MODULE_DEVICE_TABLE(pci, ali);
657MODULE_VERSION(DRV_VERSION);
658
659module_init(ali_init);
660module_exit(ali_exit);