blob: 4b32c90f489695b212883a868e55b7c3f6b9f948 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 *
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +02003 * Version 3.50
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 *
5 * VIA IDE driver for Linux. Supported southbridges:
6 *
7 * vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b,
8 * vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a,
Alan Coxa7dec1e2006-08-30 19:14:25 +01009 * vt8235, vt8237, vt8237a
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
11 * Copyright (c) 2000-2002 Vojtech Pavlik
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020012 * Copyright (c) 2007 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -070013 *
14 * Based on the work of:
15 * Michel Aubry
16 * Jeff Garzik
17 * Andre Hedrick
18 *
19 * Documentation:
20 * Obsolete device documentation publically available from via.com.tw
21 * Current device documentation available under NDA only
22 */
23
24/*
25 * This program is free software; you can redistribute it and/or modify it
26 * under the terms of the GNU General Public License version 2 as published by
27 * the Free Software Foundation.
28 */
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/module.h>
31#include <linux/kernel.h>
32#include <linux/ioport.h>
33#include <linux/blkdev.h>
34#include <linux/pci.h>
35#include <linux/init.h>
36#include <linux/ide.h>
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +020037#include <linux/dmi.h>
38
Linus Torvalds1da177e2005-04-16 15:20:36 -070039#include <asm/io.h>
40
Sascha Hauer74a9d5f2006-11-03 09:52:49 +010041#ifdef CONFIG_PPC_CHRP
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <asm/processor.h>
43#endif
44
45#include "ide-timing.h"
46
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#define VIA_IDE_ENABLE 0x40
48#define VIA_IDE_CONFIG 0x41
49#define VIA_FIFO_CONFIG 0x43
50#define VIA_MISC_1 0x44
51#define VIA_MISC_2 0x45
52#define VIA_MISC_3 0x46
53#define VIA_DRIVE_TIMING 0x48
54#define VIA_8BIT_TIMING 0x4e
55#define VIA_ADDRESS_SETUP 0x4c
56#define VIA_UDMA_TIMING 0x50
57
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020058#define VIA_BAD_PREQ 0x01 /* Crashes if PREQ# till DDACK# set */
59#define VIA_BAD_CLK66 0x02 /* 66 MHz clock doesn't work correctly */
60#define VIA_SET_FIFO 0x04 /* Needs to have FIFO split set */
61#define VIA_NO_UNMASK 0x08 /* Doesn't work with IRQ unmasking on */
62#define VIA_BAD_ID 0x10 /* Has wrong vendor ID (0x1107) */
63#define VIA_BAD_AST 0x20 /* Don't touch Address Setup Timing */
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
65/*
66 * VIA SouthBridge chips.
67 */
68
69static struct via_isa_bridge {
70 char *name;
71 u16 id;
72 u8 rev_min;
73 u8 rev_max;
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020074 u8 udma_mask;
75 u8 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070076} via_isa_bridges[] = {
Joseph Chanb311ec42007-09-10 22:06:01 -040077 { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020078 { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
79 { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
80 { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
81 { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
82 { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
83 { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
84 { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
85 { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
86 { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, ATA_UDMA5, },
87 { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, ATA_UDMA5, },
88 { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, ATA_UDMA5, },
89 { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, ATA_UDMA5, },
90 { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, ATA_UDMA4, },
91 { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
92 { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, ATA_UDMA4, },
93 { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
94 { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, ATA_UDMA2, VIA_SET_FIFO },
95 { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ },
96 { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, ATA_UDMA2, VIA_SET_FIFO },
97 { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, ATA_UDMA2, VIA_SET_FIFO },
98 { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO },
99 { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK },
100 { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 { NULL }
102};
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104static unsigned int via_clock;
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200105static char *via_dma[] = { "16", "25", "33", "44", "66", "100", "133" };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Daniel Drake7462cbf2005-11-18 22:09:45 +0100107struct via82cxxx_dev
108{
109 struct via_isa_bridge *via_config;
110 unsigned int via_80w;
111};
112
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113/**
114 * via_set_speed - write timing registers
115 * @dev: PCI device
116 * @dn: device
117 * @timing: IDE timing data to use
118 *
119 * via_set_speed writes timing values to the chipset registers
120 */
121
Daniel Drake7462cbf2005-11-18 22:09:45 +0100122static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123{
Daniel Drake7462cbf2005-11-18 22:09:45 +0100124 struct pci_dev *dev = hwif->pci_dev;
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800125 struct via82cxxx_dev *vdev = pci_get_drvdata(hwif->pci_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 u8 t;
127
Daniel Drake7462cbf2005-11-18 22:09:45 +0100128 if (~vdev->via_config->flags & VIA_BAD_AST) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129 pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t);
130 t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
131 pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t);
132 }
133
134 pci_write_config_byte(dev, VIA_8BIT_TIMING + (1 - (dn >> 1)),
135 ((FIT(timing->act8b, 1, 16) - 1) << 4) | (FIT(timing->rec8b, 1, 16) - 1));
136
137 pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn),
138 ((FIT(timing->active, 1, 16) - 1) << 4) | (FIT(timing->recover, 1, 16) - 1));
139
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200140 switch (vdev->via_config->udma_mask) {
141 case ATA_UDMA2: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 5) - 2)) : 0x03; break;
142 case ATA_UDMA4: t = timing->udma ? (0xe8 | (FIT(timing->udma, 2, 9) - 2)) : 0x0f; break;
143 case ATA_UDMA5: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 9) - 2)) : 0x07; break;
144 case ATA_UDMA6: t = timing->udma ? (0xe0 | (FIT(timing->udma, 2, 9) - 2)) : 0x07; break;
145 default: return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 }
147
148 pci_write_config_byte(dev, VIA_UDMA_TIMING + (3 - dn), t);
149}
150
151/**
152 * via_set_drive - configure transfer mode
153 * @drive: Drive to set up
154 * @speed: desired speed
155 *
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200156 * via_set_drive() computes timing values configures the chipset to
157 * a desired transfer mode. It also can be called by upper layers.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 */
159
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200160static void via_set_drive(ide_drive_t *drive, const u8 speed)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161{
162 ide_drive_t *peer = HWIF(drive)->drives + (~drive->dn & 1);
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800163 struct via82cxxx_dev *vdev = pci_get_drvdata(drive->hwif->pci_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 struct ide_timing t, p;
165 unsigned int T, UT;
166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 T = 1000000000 / via_clock;
168
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200169 switch (vdev->via_config->udma_mask) {
170 case ATA_UDMA2: UT = T; break;
171 case ATA_UDMA4: UT = T/2; break;
172 case ATA_UDMA5: UT = T/3; break;
173 case ATA_UDMA6: UT = T/4; break;
174 default: UT = T;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175 }
176
177 ide_timing_compute(drive, speed, &t, T, UT);
178
179 if (peer->present) {
180 ide_timing_compute(peer, peer->current_speed, &p, T, UT);
181 ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
182 }
183
Daniel Drake7462cbf2005-11-18 22:09:45 +0100184 via_set_speed(HWIF(drive), drive->dn, &t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185}
186
187/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200188 * via_set_pio_mode - set host controller for PIO mode
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200189 * @drive: drive
190 * @pio: PIO mode number
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 *
192 * A callback from the upper layers for PIO-only tuning.
193 */
194
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200195static void via_set_pio_mode(ide_drive_t *drive, const u8 pio)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196{
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200197 via_set_drive(drive, XFER_PIO_0 + pio);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198}
199
Daniel Drake7462cbf2005-11-18 22:09:45 +0100200static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
201{
202 struct via_isa_bridge *via_config;
Daniel Drake7462cbf2005-11-18 22:09:45 +0100203
204 for (via_config = via_isa_bridges; via_config->id; via_config++)
Alan Cox652aa162006-10-03 01:14:35 -0700205 if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
Daniel Drake7462cbf2005-11-18 22:09:45 +0100206 !!(via_config->flags & VIA_BAD_ID),
207 via_config->id, NULL))) {
208
Auke Kok44c10132007-06-08 15:46:36 -0700209 if ((*isa)->revision >= via_config->rev_min &&
210 (*isa)->revision <= via_config->rev_max)
Daniel Drake7462cbf2005-11-18 22:09:45 +0100211 break;
Alan Cox652aa162006-10-03 01:14:35 -0700212 pci_dev_put(*isa);
Daniel Drake7462cbf2005-11-18 22:09:45 +0100213 }
214
215 return via_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216}
217
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800218/*
219 * Check and handle 80-wire cable presence
220 */
221static void __devinit via_cable_detect(struct via82cxxx_dev *vdev, u32 u)
222{
223 int i;
224
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200225 switch (vdev->via_config->udma_mask) {
226 case ATA_UDMA4:
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800227 for (i = 24; i >= 0; i -= 8)
228 if (((u >> (i & 16)) & 8) &&
229 ((u >> i) & 0x20) &&
230 (((u >> i) & 7) < 2)) {
231 /*
232 * 2x PCI clock and
233 * UDMA w/ < 3T/cycle
234 */
235 vdev->via_80w |= (1 << (1 - (i >> 4)));
236 }
237 break;
238
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200239 case ATA_UDMA5:
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800240 for (i = 24; i >= 0; i -= 8)
241 if (((u >> i) & 0x10) ||
242 (((u >> i) & 0x20) &&
243 (((u >> i) & 7) < 4))) {
244 /* BIOS 80-wire bit or
245 * UDMA w/ < 60ns/cycle
246 */
247 vdev->via_80w |= (1 << (1 - (i >> 4)));
248 }
249 break;
250
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200251 case ATA_UDMA6:
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800252 for (i = 24; i >= 0; i -= 8)
253 if (((u >> i) & 0x10) ||
254 (((u >> i) & 0x20) &&
255 (((u >> i) & 7) < 6))) {
256 /* BIOS 80-wire bit or
257 * UDMA w/ < 60ns/cycle
258 */
259 vdev->via_80w |= (1 << (1 - (i >> 4)));
260 }
261 break;
262 }
263}
264
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265/**
266 * init_chipset_via82cxxx - initialization handler
267 * @dev: PCI device
268 * @name: Name of interface
269 *
270 * The initialization callback. Here we determine the IDE chip type
271 * and initialize its drive independent registers.
272 */
273
Herbert Xuf3718d32005-07-03 16:42:18 +0200274static unsigned int __devinit init_chipset_via82cxxx(struct pci_dev *dev, const char *name)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275{
276 struct pci_dev *isa = NULL;
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800277 struct via82cxxx_dev *vdev;
Daniel Drake7462cbf2005-11-18 22:09:45 +0100278 struct via_isa_bridge *via_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 u8 t, v;
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800280 u32 u;
281
282 vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
283 if (!vdev) {
284 printk(KERN_ERR "VP_IDE: out of memory :(\n");
285 return -ENOMEM;
286 }
287 pci_set_drvdata(dev, vdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
289 /*
290 * Find the ISA bridge to see how good the IDE is.
291 */
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800292 vdev->via_config = via_config = via_config_find(&isa);
Alan Cox23a1b2a2006-12-06 20:36:12 -0800293
294 /* We checked this earlier so if it fails here deeep badness
295 is involved */
296
297 BUG_ON(!via_config->id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
299 /*
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800300 * Detect cable and configure Clk66
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 */
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800302 pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
303
304 via_cable_detect(vdev, u);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200306 if (via_config->udma_mask == ATA_UDMA4) {
Daniel Drake7462cbf2005-11-18 22:09:45 +0100307 /* Enable Clk66 */
Daniel Drake7462cbf2005-11-18 22:09:45 +0100308 pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008);
309 } else if (via_config->flags & VIA_BAD_CLK66) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 /* Would cause trouble on 596a and 686 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008);
312 }
313
314 /*
315 * Check whether interfaces are enabled.
316 */
317
318 pci_read_config_byte(dev, VIA_IDE_ENABLE, &v);
319
320 /*
321 * Set up FIFO sizes and thresholds.
322 */
323
324 pci_read_config_byte(dev, VIA_FIFO_CONFIG, &t);
325
326 /* Disable PREQ# till DDACK# */
327 if (via_config->flags & VIA_BAD_PREQ) {
328 /* Would crash on 586b rev 41 */
329 t &= 0x7f;
330 }
331
332 /* Fix FIFO split between channels */
333 if (via_config->flags & VIA_SET_FIFO) {
334 t &= (t & 0x9f);
335 switch (v & 3) {
336 case 2: t |= 0x00; break; /* 16 on primary */
337 case 1: t |= 0x60; break; /* 16 on secondary */
338 case 3: t |= 0x20; break; /* 8 pri 8 sec */
339 }
340 }
341
342 pci_write_config_byte(dev, VIA_FIFO_CONFIG, t);
343
344 /*
345 * Determine system bus clock.
346 */
347
348 via_clock = system_bus_clock() * 1000;
349
350 switch (via_clock) {
351 case 33000: via_clock = 33333; break;
352 case 37000: via_clock = 37500; break;
353 case 41000: via_clock = 41666; break;
354 }
355
356 if (via_clock < 20000 || via_clock > 50000) {
357 printk(KERN_WARNING "VP_IDE: User given PCI clock speed "
358 "impossible (%d), using 33 MHz instead.\n", via_clock);
359 printk(KERN_WARNING "VP_IDE: Use ide0=ata66 if you want "
360 "to assume 80-wire cable.\n");
361 via_clock = 33333;
362 }
363
364 /*
365 * Print the boot message.
366 */
367
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200368 printk(KERN_INFO "VP_IDE: VIA %s (rev %02x) IDE %sDMA%s "
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 "controller on pci%s\n",
Auke Kok44c10132007-06-08 15:46:36 -0700370 via_config->name, isa->revision,
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200371 via_config->udma_mask ? "U" : "MW",
372 via_dma[via_config->udma_mask ?
373 (fls(via_config->udma_mask) - 1) : 0],
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 pci_name(dev));
375
Alan Cox652aa162006-10-03 01:14:35 -0700376 pci_dev_put(isa);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 return 0;
378}
379
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200380/*
381 * Cable special cases
382 */
383
Jeff Garzik18552562007-10-03 15:15:40 -0400384static const struct dmi_system_id cable_dmi_table[] = {
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200385 {
386 .ident = "Acer Ferrari 3400",
387 .matches = {
388 DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."),
389 DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"),
390 },
391 },
392 { }
393};
394
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200395static int via_cable_override(struct pci_dev *pdev)
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200396{
397 /* Systems by DMI */
398 if (dmi_check_system(cable_dmi_table))
399 return 1;
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200400
401 /* Arima W730-K8/Targa Visionary 811/... */
402 if (pdev->subsystem_vendor == 0x161F &&
403 pdev->subsystem_device == 0x2032)
404 return 1;
405
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200406 return 0;
407}
408
409static u8 __devinit via82cxxx_cable_detect(ide_hwif_t *hwif)
410{
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200411 struct pci_dev *pdev = hwif->pci_dev;
412 struct via82cxxx_dev *vdev = pci_get_drvdata(pdev);
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200413
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200414 if (via_cable_override(pdev))
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200415 return ATA_CBL_PATA40_SHORT;
416
417 if ((vdev->via_80w >> hwif->channel) & 1)
418 return ATA_CBL_PATA80;
419 else
420 return ATA_CBL_PATA40;
421}
422
Herbert Xuf3718d32005-07-03 16:42:18 +0200423static void __devinit init_hwif_via82cxxx(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424{
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200425 hwif->set_pio_mode = &via_set_pio_mode;
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200426 hwif->set_dma_mode = &via_set_drive;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 if (!hwif->dma_base)
429 return;
430
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200431 if (hwif->cbl != ATA_CBL_PATA40_SHORT)
432 hwif->cbl = via82cxxx_cable_detect(hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433}
434
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200435static const struct ide_port_info via82cxxx_chipset __devinitdata = {
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200436 .name = "VP_IDE",
437 .init_chipset = init_chipset_via82cxxx,
438 .init_hwif = init_hwif_via82cxxx,
439 .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } },
440 .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST |
441 IDE_HFLAG_PIO_NO_DOWNGRADE |
Bartlomiej Zolnierkiewicz4db90a12008-01-25 22:17:18 +0100442 IDE_HFLAG_ABUSE_SET_DMA_MODE |
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200443 IDE_HFLAG_POST_SET_MODE |
444 IDE_HFLAG_IO_32BIT |
445 IDE_HFLAG_BOOTABLE,
446 .pio_mask = ATA_PIO5,
447 .swdma_mask = ATA_SWDMA2,
448 .mwdma_mask = ATA_MWDMA2,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449};
450
451static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id)
452{
Alan Cox23a1b2a2006-12-06 20:36:12 -0800453 struct pci_dev *isa = NULL;
454 struct via_isa_bridge *via_config;
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200455 u8 idx = id->driver_data;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200456 struct ide_port_info d;
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200457
458 d = via82cxxx_chipset;
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200459
Alan Cox23a1b2a2006-12-06 20:36:12 -0800460 /*
461 * Find the ISA bridge and check we know what it is.
462 */
463 via_config = via_config_find(&isa);
464 pci_dev_put(isa);
465 if (!via_config->id) {
466 printk(KERN_WARNING "VP_IDE: Unknown VIA SouthBridge, disabling DMA.\n");
467 return -ENODEV;
468 }
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200469
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200470 if (idx == 0)
471 d.host_flags |= IDE_HFLAG_NO_AUTODMA;
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +0200472 else
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200473 d.enablebits[1].reg = d.enablebits[0].reg = 0;
474
475 if ((via_config->flags & VIA_NO_UNMASK) == 0)
476 d.host_flags |= IDE_HFLAG_UNMASK_IRQS;
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +0200477
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200478#ifdef CONFIG_PPC_CHRP
479 if (machine_is(chrp) && _chrp_type == _CHRP_Pegasos)
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200480 d.host_flags |= IDE_HFLAG_FORCE_LEGACY_IRQS;
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200481#endif
482
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200483 d.udma_mask = via_config->udma_mask;
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200484
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200485 return ide_setup_pci_device(dev, &d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486}
487
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200488static const struct pci_device_id via_pci_tbl[] = {
489 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), 0 },
490 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), 0 },
491 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), 1 },
492 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), 1 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493 { 0, },
494};
495MODULE_DEVICE_TABLE(pci, via_pci_tbl);
496
497static struct pci_driver driver = {
498 .name = "VIA_IDE",
499 .id_table = via_pci_tbl,
500 .probe = via_init_one,
501};
502
Bartlomiej Zolnierkiewicz82ab1ee2007-01-27 13:46:56 +0100503static int __init via_ide_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504{
505 return ide_pci_register_driver(&driver);
506}
507
508module_init(via_ide_init);
509
510MODULE_AUTHOR("Vojtech Pavlik, Michel Aubry, Jeff Garzik, Andre Hedrick");
511MODULE_DESCRIPTION("PCI driver module for VIA IDE");
512MODULE_LICENSE("GPL");