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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * VIA IDE driver for Linux. Supported southbridges:
3 *
4 * vt82c576, vt82c586, vt82c586a, vt82c586b, vt82c596a, vt82c596b,
5 * vt82c686, vt82c686a, vt82c686b, vt8231, vt8233, vt8233c, vt8233a,
Alan Coxa7dec1e2006-08-30 19:14:25 +01006 * vt8235, vt8237, vt8237a
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
8 * Copyright (c) 2000-2002 Vojtech Pavlik
Bartlomiej Zolnierkiewicz42036c82010-01-18 07:19:37 +00009 * Copyright (c) 2007-2010 Bartlomiej Zolnierkiewicz
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *
11 * Based on the work of:
12 * Michel Aubry
13 * Jeff Garzik
14 * Andre Hedrick
15 *
16 * Documentation:
Lucas De Marchi25985ed2011-03-30 22:57:33 -030017 * Obsolete device documentation publicly available from via.com.tw
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 * Current device documentation available under NDA only
19 */
20
21/*
22 * This program is free software; you can redistribute it and/or modify it
23 * under the terms of the GNU General Public License version 2 as published by
24 * the Free Software Foundation.
25 */
26
Linus Torvalds1da177e2005-04-16 15:20:36 -070027#include <linux/module.h>
28#include <linux/kernel.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090029#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070030#include <linux/pci.h>
31#include <linux/init.h>
32#include <linux/ide.h>
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +020033#include <linux/dmi.h>
34
Sascha Hauer74a9d5f2006-11-03 09:52:49 +010035#ifdef CONFIG_PPC_CHRP
Linus Torvalds1da177e2005-04-16 15:20:36 -070036#include <asm/processor.h>
37#endif
38
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +020039#define DRV_NAME "via82cxxx"
40
Linus Torvalds1da177e2005-04-16 15:20:36 -070041#define VIA_IDE_ENABLE 0x40
42#define VIA_IDE_CONFIG 0x41
43#define VIA_FIFO_CONFIG 0x43
44#define VIA_MISC_1 0x44
45#define VIA_MISC_2 0x45
46#define VIA_MISC_3 0x46
47#define VIA_DRIVE_TIMING 0x48
48#define VIA_8BIT_TIMING 0x4e
49#define VIA_ADDRESS_SETUP 0x4c
50#define VIA_UDMA_TIMING 0x50
51
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020052#define VIA_BAD_PREQ 0x01 /* Crashes if PREQ# till DDACK# set */
53#define VIA_BAD_CLK66 0x02 /* 66 MHz clock doesn't work correctly */
54#define VIA_SET_FIFO 0x04 /* Needs to have FIFO split set */
55#define VIA_NO_UNMASK 0x08 /* Doesn't work with IRQ unmasking on */
56#define VIA_BAD_ID 0x10 /* Has wrong vendor ID (0x1107) */
57#define VIA_BAD_AST 0x20 /* Don't touch Address Setup Timing */
Bartlomiej Zolnierkiewicza13e4862010-01-18 07:19:53 +000058#define VIA_SATA_PATA 0x80 /* SATA/PATA combined configuration */
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
Bartlomiej Zolnierkiewicz42036c82010-01-18 07:19:37 +000060enum {
61 VIA_IDFLAG_SINGLE = (1 << 1), /* single channel controller */
62};
63
Linus Torvalds1da177e2005-04-16 15:20:36 -070064/*
65 * VIA SouthBridge chips.
66 */
67
68static struct via_isa_bridge {
69 char *name;
70 u16 id;
71 u8 rev_min;
72 u8 rev_max;
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020073 u8 udma_mask;
74 u8 flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070075} via_isa_bridges[] = {
Bartlomiej Zolnierkiewicza13e4862010-01-18 07:19:53 +000076 { "vx855", PCI_DEVICE_ID_VIA_VX855, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
77 { "vx800", PCI_DEVICE_ID_VIA_VX800, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
78 { "cx700", PCI_DEVICE_ID_VIA_CX700, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST | VIA_SATA_PATA },
Bartlomiej Zolnierkiewicz5b6c82e2010-01-18 07:20:07 +000079 { "vt8261", PCI_DEVICE_ID_VIA_8261, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020080 { "vt8237s", PCI_DEVICE_ID_VIA_8237S, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
81 { "vt6410", PCI_DEVICE_ID_VIA_6410, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
Yann Dirson2a800b72010-07-18 16:11:06 -070082 { "vt6415", PCI_DEVICE_ID_VIA_6415, 0x00, 0xff, ATA_UDMA6, VIA_BAD_AST },
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +020083 { "vt8251", PCI_DEVICE_ID_VIA_8251, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
84 { "vt8237", PCI_DEVICE_ID_VIA_8237, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
85 { "vt8237a", PCI_DEVICE_ID_VIA_8237A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
86 { "vt8235", PCI_DEVICE_ID_VIA_8235, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
87 { "vt8233a", PCI_DEVICE_ID_VIA_8233A, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
88 { "vt8233c", PCI_DEVICE_ID_VIA_8233C_0, 0x00, 0x2f, ATA_UDMA5, },
89 { "vt8233", PCI_DEVICE_ID_VIA_8233_0, 0x00, 0x2f, ATA_UDMA5, },
90 { "vt8231", PCI_DEVICE_ID_VIA_8231, 0x00, 0x2f, ATA_UDMA5, },
91 { "vt82c686b", PCI_DEVICE_ID_VIA_82C686, 0x40, 0x4f, ATA_UDMA5, },
92 { "vt82c686a", PCI_DEVICE_ID_VIA_82C686, 0x10, 0x2f, ATA_UDMA4, },
93 { "vt82c686", PCI_DEVICE_ID_VIA_82C686, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
94 { "vt82c596b", PCI_DEVICE_ID_VIA_82C596, 0x10, 0x2f, ATA_UDMA4, },
95 { "vt82c596a", PCI_DEVICE_ID_VIA_82C596, 0x00, 0x0f, ATA_UDMA2, VIA_BAD_CLK66 },
96 { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x47, 0x4f, ATA_UDMA2, VIA_SET_FIFO },
97 { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x40, 0x46, ATA_UDMA2, VIA_SET_FIFO | VIA_BAD_PREQ },
98 { "vt82c586b", PCI_DEVICE_ID_VIA_82C586_0, 0x30, 0x3f, ATA_UDMA2, VIA_SET_FIFO },
99 { "vt82c586a", PCI_DEVICE_ID_VIA_82C586_0, 0x20, 0x2f, ATA_UDMA2, VIA_SET_FIFO },
100 { "vt82c586", PCI_DEVICE_ID_VIA_82C586_0, 0x00, 0x0f, 0x00, VIA_SET_FIFO },
101 { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK },
102 { "vt82c576", PCI_DEVICE_ID_VIA_82C576, 0x00, 0x2f, 0x00, VIA_SET_FIFO | VIA_NO_UNMASK | VIA_BAD_ID },
Bartlomiej Zolnierkiewicz5b6c82e2010-01-18 07:20:07 +0000103 { "vtxxxx", PCI_DEVICE_ID_VIA_ANON, 0x00, 0x2f, ATA_UDMA6, VIA_BAD_AST },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104 { NULL }
105};
106
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107static unsigned int via_clock;
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200108static char *via_dma[] = { "16", "25", "33", "44", "66", "100", "133" };
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
Daniel Drake7462cbf2005-11-18 22:09:45 +0100110struct via82cxxx_dev
111{
112 struct via_isa_bridge *via_config;
113 unsigned int via_80w;
114};
115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116/**
117 * via_set_speed - write timing registers
118 * @dev: PCI device
119 * @dn: device
120 * @timing: IDE timing data to use
121 *
122 * via_set_speed writes timing values to the chipset registers
123 */
124
Daniel Drake7462cbf2005-11-18 22:09:45 +0100125static void via_set_speed(ide_hwif_t *hwif, u8 dn, struct ide_timing *timing)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100127 struct pci_dev *dev = to_pci_dev(hwif->dev);
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200128 struct ide_host *host = pci_get_drvdata(dev);
129 struct via82cxxx_dev *vdev = host->host_priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 u8 t;
131
Daniel Drake7462cbf2005-11-18 22:09:45 +0100132 if (~vdev->via_config->flags & VIA_BAD_AST) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133 pci_read_config_byte(dev, VIA_ADDRESS_SETUP, &t);
Harvey Harrisond6cddd32008-07-15 21:21:41 +0200134 t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(timing->setup, 1, 4) - 1) << ((3 - dn) << 1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 pci_write_config_byte(dev, VIA_ADDRESS_SETUP, t);
136 }
137
138 pci_write_config_byte(dev, VIA_8BIT_TIMING + (1 - (dn >> 1)),
Harvey Harrisond6cddd32008-07-15 21:21:41 +0200139 ((clamp_val(timing->act8b, 1, 16) - 1) << 4) | (clamp_val(timing->rec8b, 1, 16) - 1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140
141 pci_write_config_byte(dev, VIA_DRIVE_TIMING + (3 - dn),
Harvey Harrisond6cddd32008-07-15 21:21:41 +0200142 ((clamp_val(timing->active, 1, 16) - 1) << 4) | (clamp_val(timing->recover, 1, 16) - 1));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200144 switch (vdev->via_config->udma_mask) {
Harvey Harrisond6cddd32008-07-15 21:21:41 +0200145 case ATA_UDMA2: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 5) - 2)) : 0x03; break;
146 case ATA_UDMA4: t = timing->udma ? (0xe8 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x0f; break;
147 case ATA_UDMA5: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
148 case ATA_UDMA6: t = timing->udma ? (0xe0 | (clamp_val(timing->udma, 2, 9) - 2)) : 0x07; break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 }
150
Bartlomiej Zolnierkiewicz68d0a032010-01-18 07:20:21 +0000151 /* Set UDMA unless device is not UDMA capable */
152 if (vdev->via_config->udma_mask) {
153 u8 udma_etc;
154
155 pci_read_config_byte(dev, VIA_UDMA_TIMING + 3 - dn, &udma_etc);
156
157 /* clear transfer mode bit */
158 udma_etc &= ~0x20;
159
160 if (timing->udma) {
161 /* preserve 80-wire cable detection bit */
162 udma_etc &= 0x10;
163 udma_etc |= t;
164 }
165
166 pci_write_config_byte(dev, VIA_UDMA_TIMING + 3 - dn, udma_etc);
167 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168}
169
170/**
171 * via_set_drive - configure transfer mode
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800172 * @hwif: port
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 * @drive: Drive to set up
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174 *
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200175 * via_set_drive() computes timing values configures the chipset to
176 * a desired transfer mode. It also can be called by upper layers.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 */
178
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800179static void via_set_drive(ide_hwif_t *hwif, ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180{
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +0200181 ide_drive_t *peer = ide_get_pair_dev(drive);
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100182 struct pci_dev *dev = to_pci_dev(hwif->dev);
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200183 struct ide_host *host = pci_get_drvdata(dev);
184 struct via82cxxx_dev *vdev = host->host_priv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185 struct ide_timing t, p;
186 unsigned int T, UT;
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800187 const u8 speed = drive->dma_mode;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 T = 1000000000 / via_clock;
190
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200191 switch (vdev->via_config->udma_mask) {
192 case ATA_UDMA2: UT = T; break;
193 case ATA_UDMA4: UT = T/2; break;
194 case ATA_UDMA5: UT = T/3; break;
195 case ATA_UDMA6: UT = T/4; break;
196 default: UT = T;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 }
198
199 ide_timing_compute(drive, speed, &t, T, UT);
200
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +0200201 if (peer) {
Bartlomiej Zolnierkiewiczf0e5f622010-01-18 07:22:30 +0000202 ide_timing_compute(peer, peer->pio_mode, &p, T, UT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 ide_timing_merge(&p, &t, &t, IDE_TIMING_8BIT);
204 }
205
Bartlomiej Zolnierkiewicz898ec222009-01-06 17:20:52 +0100206 via_set_speed(hwif, drive->dn, &t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207}
208
209/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200210 * via_set_pio_mode - set host controller for PIO mode
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800211 * @hwif: port
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200212 * @drive: drive
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 *
214 * A callback from the upper layers for PIO-only tuning.
215 */
216
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800217static void via_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218{
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800219 drive->dma_mode = drive->pio_mode;
220 via_set_drive(hwif, drive);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221}
222
Daniel Drake7462cbf2005-11-18 22:09:45 +0100223static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
224{
225 struct via_isa_bridge *via_config;
Daniel Drake7462cbf2005-11-18 22:09:45 +0100226
Bartlomiej Zolnierkiewicz5b6c82e2010-01-18 07:20:07 +0000227 for (via_config = via_isa_bridges;
228 via_config->id != PCI_DEVICE_ID_VIA_ANON; via_config++)
Alan Cox652aa162006-10-03 01:14:35 -0700229 if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
Daniel Drake7462cbf2005-11-18 22:09:45 +0100230 !!(via_config->flags & VIA_BAD_ID),
231 via_config->id, NULL))) {
232
Auke Kok44c10132007-06-08 15:46:36 -0700233 if ((*isa)->revision >= via_config->rev_min &&
234 (*isa)->revision <= via_config->rev_max)
Daniel Drake7462cbf2005-11-18 22:09:45 +0100235 break;
Alan Cox652aa162006-10-03 01:14:35 -0700236 pci_dev_put(*isa);
Daniel Drake7462cbf2005-11-18 22:09:45 +0100237 }
238
239 return via_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240}
241
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800242/*
243 * Check and handle 80-wire cable presence
244 */
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200245static void via_cable_detect(struct via82cxxx_dev *vdev, u32 u)
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800246{
247 int i;
248
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200249 switch (vdev->via_config->udma_mask) {
250 case ATA_UDMA4:
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800251 for (i = 24; i >= 0; i -= 8)
252 if (((u >> (i & 16)) & 8) &&
253 ((u >> i) & 0x20) &&
254 (((u >> i) & 7) < 2)) {
255 /*
256 * 2x PCI clock and
257 * UDMA w/ < 3T/cycle
258 */
259 vdev->via_80w |= (1 << (1 - (i >> 4)));
260 }
261 break;
262
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200263 case ATA_UDMA5:
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800264 for (i = 24; i >= 0; i -= 8)
265 if (((u >> i) & 0x10) ||
266 (((u >> i) & 0x20) &&
267 (((u >> i) & 7) < 4))) {
268 /* BIOS 80-wire bit or
269 * UDMA w/ < 60ns/cycle
270 */
271 vdev->via_80w |= (1 << (1 - (i >> 4)));
272 }
273 break;
274
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200275 case ATA_UDMA6:
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800276 for (i = 24; i >= 0; i -= 8)
277 if (((u >> i) & 0x10) ||
278 (((u >> i) & 0x20) &&
279 (((u >> i) & 7) < 6))) {
280 /* BIOS 80-wire bit or
281 * UDMA w/ < 60ns/cycle
282 */
283 vdev->via_80w |= (1 << (1 - (i >> 4)));
284 }
285 break;
286 }
287}
288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289/**
290 * init_chipset_via82cxxx - initialization handler
291 * @dev: PCI device
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 *
293 * The initialization callback. Here we determine the IDE chip type
294 * and initialize its drive independent registers.
295 */
296
Bartlomiej Zolnierkiewicz2ed0ef52009-03-24 23:22:53 +0100297static int init_chipset_via82cxxx(struct pci_dev *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298{
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200299 struct ide_host *host = pci_get_drvdata(dev);
300 struct via82cxxx_dev *vdev = host->host_priv;
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200301 struct via_isa_bridge *via_config = vdev->via_config;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302 u8 t, v;
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800303 u32 u;
304
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 /*
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800306 * Detect cable and configure Clk66
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 */
Bartlomiej Zolnierkiewiczcd36bee2007-01-05 16:36:21 -0800308 pci_read_config_dword(dev, VIA_UDMA_TIMING, &u);
309
310 via_cable_detect(vdev, u);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311
Bartlomiej Zolnierkiewicz75b1d972007-07-09 23:17:57 +0200312 if (via_config->udma_mask == ATA_UDMA4) {
Daniel Drake7462cbf2005-11-18 22:09:45 +0100313 /* Enable Clk66 */
Daniel Drake7462cbf2005-11-18 22:09:45 +0100314 pci_write_config_dword(dev, VIA_UDMA_TIMING, u|0x80008);
315 } else if (via_config->flags & VIA_BAD_CLK66) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 /* Would cause trouble on 596a and 686 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 pci_write_config_dword(dev, VIA_UDMA_TIMING, u & ~0x80008);
318 }
319
320 /*
321 * Check whether interfaces are enabled.
322 */
323
324 pci_read_config_byte(dev, VIA_IDE_ENABLE, &v);
325
326 /*
327 * Set up FIFO sizes and thresholds.
328 */
329
330 pci_read_config_byte(dev, VIA_FIFO_CONFIG, &t);
331
332 /* Disable PREQ# till DDACK# */
333 if (via_config->flags & VIA_BAD_PREQ) {
334 /* Would crash on 586b rev 41 */
335 t &= 0x7f;
336 }
337
338 /* Fix FIFO split between channels */
339 if (via_config->flags & VIA_SET_FIFO) {
340 t &= (t & 0x9f);
341 switch (v & 3) {
342 case 2: t |= 0x00; break; /* 16 on primary */
343 case 1: t |= 0x60; break; /* 16 on secondary */
344 case 3: t |= 0x20; break; /* 8 pri 8 sec */
345 }
346 }
347
348 pci_write_config_byte(dev, VIA_FIFO_CONFIG, t);
349
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 return 0;
351}
352
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200353/*
354 * Cable special cases
355 */
356
Jeff Garzik18552562007-10-03 15:15:40 -0400357static const struct dmi_system_id cable_dmi_table[] = {
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200358 {
359 .ident = "Acer Ferrari 3400",
360 .matches = {
361 DMI_MATCH(DMI_BOARD_VENDOR, "Acer,Inc."),
362 DMI_MATCH(DMI_BOARD_NAME, "Ferrari 3400"),
363 },
364 },
365 { }
366};
367
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200368static int via_cable_override(struct pci_dev *pdev)
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200369{
370 /* Systems by DMI */
371 if (dmi_check_system(cable_dmi_table))
372 return 1;
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200373
374 /* Arima W730-K8/Targa Visionary 811/... */
375 if (pdev->subsystem_vendor == 0x161F &&
376 pdev->subsystem_device == 0x2032)
377 return 1;
378
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200379 return 0;
380}
381
Bartlomiej Zolnierkiewiczf454cbe2008-08-05 18:17:04 +0200382static u8 via82cxxx_cable_detect(ide_hwif_t *hwif)
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200383{
Bartlomiej Zolnierkiewicz36501652008-02-01 23:09:31 +0100384 struct pci_dev *pdev = to_pci_dev(hwif->dev);
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200385 struct ide_host *host = pci_get_drvdata(pdev);
386 struct via82cxxx_dev *vdev = host->host_priv;
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200387
Bartlomiej Zolnierkiewicz58e47bb2007-09-11 22:28:37 +0200388 if (via_cable_override(pdev))
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200389 return ATA_CBL_PATA40_SHORT;
390
Bartlomiej Zolnierkiewicza13e4862010-01-18 07:19:53 +0000391 if ((vdev->via_config->flags & VIA_SATA_PATA) && hwif->channel == 0)
392 return ATA_CBL_SATA;
393
Bartlomiej Zolnierkiewiczbdab00b2007-07-09 23:17:58 +0200394 if ((vdev->via_80w >> hwif->channel) & 1)
395 return ATA_CBL_PATA80;
396 else
397 return ATA_CBL_PATA40;
398}
399
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200400static const struct ide_port_ops via_port_ops = {
401 .set_pio_mode = via_set_pio_mode,
402 .set_dma_mode = via_set_drive,
403 .cable_detect = via82cxxx_cable_detect,
404};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405
Bartlomiej Zolnierkiewicz85620432007-10-20 00:32:34 +0200406static const struct ide_port_info via82cxxx_chipset __devinitdata = {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200407 .name = DRV_NAME,
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200408 .init_chipset = init_chipset_via82cxxx,
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200409 .enablebits = { { 0x40, 0x02, 0x02 }, { 0x40, 0x01, 0x01 } },
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200410 .port_ops = &via_port_ops,
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200411 .host_flags = IDE_HFLAG_PIO_NO_BLACKLIST |
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200412 IDE_HFLAG_POST_SET_MODE |
Bartlomiej Zolnierkiewicz5e71d9c2008-04-26 17:36:35 +0200413 IDE_HFLAG_IO_32BIT,
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200414 .pio_mask = ATA_PIO5,
415 .swdma_mask = ATA_SWDMA2,
416 .mwdma_mask = ATA_MWDMA2,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417};
418
419static int __devinit via_init_one(struct pci_dev *dev, const struct pci_device_id *id)
420{
Alan Cox23a1b2a2006-12-06 20:36:12 -0800421 struct pci_dev *isa = NULL;
422 struct via_isa_bridge *via_config;
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200423 struct via82cxxx_dev *vdev;
424 int rc;
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200425 u8 idx = id->driver_data;
Bartlomiej Zolnierkiewicz039788e2007-10-20 00:32:34 +0200426 struct ide_port_info d;
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200427
428 d = via82cxxx_chipset;
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200429
Alan Cox23a1b2a2006-12-06 20:36:12 -0800430 /*
431 * Find the ISA bridge and check we know what it is.
432 */
433 via_config = via_config_find(&isa);
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200434
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200435 /*
436 * Print the boot message.
437 */
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200438 printk(KERN_INFO DRV_NAME " %s: VIA %s (rev %02x) IDE %sDMA%s\n",
Bartlomiej Zolnierkiewicz28cfd8a2008-07-24 22:53:31 +0200439 pci_name(dev), via_config->name, isa->revision,
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200440 via_config->udma_mask ? "U" : "MW",
441 via_dma[via_config->udma_mask ?
Bartlomiej Zolnierkiewicz28cfd8a2008-07-24 22:53:31 +0200442 (fls(via_config->udma_mask) - 1) : 0]);
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200443
444 pci_dev_put(isa);
445
446 /*
447 * Determine system bus clock.
448 */
449 via_clock = (ide_pci_clk ? ide_pci_clk : 33) * 1000;
450
451 switch (via_clock) {
452 case 33000: via_clock = 33333; break;
453 case 37000: via_clock = 37500; break;
454 case 41000: via_clock = 41666; break;
455 }
456
457 if (via_clock < 20000 || via_clock > 50000) {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200458 printk(KERN_WARNING DRV_NAME ": User given PCI clock speed "
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200459 "impossible (%d), using 33 MHz instead.\n", via_clock);
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200460 via_clock = 33333;
461 }
462
Bartlomiej Zolnierkiewicz42036c82010-01-18 07:19:37 +0000463 if (idx == 1)
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200464 d.enablebits[1].reg = d.enablebits[0].reg = 0;
Bartlomiej Zolnierkiewicz42036c82010-01-18 07:19:37 +0000465 else
466 d.host_flags |= IDE_HFLAG_NO_AUTODMA;
467
468 if (idx == VIA_IDFLAG_SINGLE)
469 d.host_flags |= IDE_HFLAG_SINGLE;
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200470
471 if ((via_config->flags & VIA_NO_UNMASK) == 0)
472 d.host_flags |= IDE_HFLAG_UNMASK_IRQS;
Bartlomiej Zolnierkiewiczcaea7602007-10-20 00:32:30 +0200473
Bartlomiej Zolnierkiewicz61573322007-10-20 00:32:33 +0200474 d.udma_mask = via_config->udma_mask;
Bartlomiej Zolnierkiewicz8acf28c2007-10-20 00:32:30 +0200475
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200476 vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
477 if (!vdev) {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200478 printk(KERN_ERR DRV_NAME " %s: out of memory :(\n",
479 pci_name(dev));
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200480 return -ENOMEM;
481 }
482
Bartlomiej Zolnierkiewicz37525be2008-07-24 22:53:18 +0200483 vdev->via_config = via_config;
484
Bartlomiej Zolnierkiewiczee773252008-07-24 22:53:17 +0200485 rc = ide_pci_init_one(dev, &d, vdev);
486 if (rc)
487 kfree(vdev);
488
489 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490}
491
Bartlomiej Zolnierkiewicz585f67e2008-07-24 22:53:26 +0200492static void __devexit via_remove(struct pci_dev *dev)
493{
494 struct ide_host *host = pci_get_drvdata(dev);
495 struct via82cxxx_dev *vdev = host->host_priv;
496
497 ide_pci_remove(dev);
498 kfree(vdev);
499}
500
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200501static const struct pci_device_id via_pci_tbl[] = {
502 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C576_1), 0 },
503 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_82C586_1), 0 },
Andrew Smith84f7e452008-02-19 01:41:26 +0100504 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_CX700_IDE), 0 },
Bartlomiej Zolnierkiewicz42036c82010-01-18 07:19:37 +0000505 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_VX855_IDE), VIA_IDFLAG_SINGLE },
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200506 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6410), 1 },
Bartlomiej Zolnierkiewicza354ae82010-01-18 07:20:14 +0000507 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_6415), 1 },
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200508 { PCI_VDEVICE(VIA, PCI_DEVICE_ID_VIA_SATA_EIDE), 1 },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 { 0, },
510};
511MODULE_DEVICE_TABLE(pci, via_pci_tbl);
512
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200513static struct pci_driver via_pci_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 .name = "VIA_IDE",
515 .id_table = via_pci_tbl,
516 .probe = via_init_one,
Adrian Bunka69999e2008-08-18 21:40:03 +0200517 .remove = __devexit_p(via_remove),
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200518 .suspend = ide_pci_suspend,
519 .resume = ide_pci_resume,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520};
521
Bartlomiej Zolnierkiewicz82ab1ee2007-01-27 13:46:56 +0100522static int __init via_ide_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200524 return ide_pci_register_driver(&via_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525}
526
Bartlomiej Zolnierkiewicz585f67e2008-07-24 22:53:26 +0200527static void __exit via_ide_exit(void)
528{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200529 pci_unregister_driver(&via_pci_driver);
Bartlomiej Zolnierkiewicz585f67e2008-07-24 22:53:26 +0200530}
531
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532module_init(via_ide_init);
Bartlomiej Zolnierkiewicz585f67e2008-07-24 22:53:26 +0200533module_exit(via_ide_exit);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534
Bartlomiej Zolnierkiewicz42036c82010-01-18 07:19:37 +0000535MODULE_AUTHOR("Vojtech Pavlik, Bartlomiej Zolnierkiewicz, Michel Aubry, Jeff Garzik, Andre Hedrick");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536MODULE_DESCRIPTION("PCI driver module for VIA IDE");
537MODULE_LICENSE("GPL");