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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04002 * sata_via.c - VIA Serial ATA controllers
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
Jeff Garzik5796d1c2007-10-26 00:03:37 -04006 * on emails.
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04007 *
8 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
9 * Copyright 2003-2004 Jeff Garzik
10 *
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
15 * any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; see the file COPYING. If not, write to
24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 *
27 * libata documentation is available via 'make {ps|pdf}docs',
28 * as Documentation/DocBook/libata.*
29 *
30 * Hardware documentation available under NDA.
31 *
32 *
Jeff Garzikaf36d7f2005-08-28 20:18:39 -040033 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 */
35
36#include <linux/kernel.h>
37#include <linux/module.h>
38#include <linux/pci.h>
39#include <linux/init.h>
40#include <linux/blkdev.h>
41#include <linux/delay.h>
Jeff Garzika9524a72005-10-30 14:39:11 -050042#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070043#include <scsi/scsi_host.h>
44#include <linux/libata.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045
46#define DRV_NAME "sata_via"
Tejun Heob9d5b892008-10-22 00:46:36 +090047#define DRV_VERSION "2.4"
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
Tejun Heob9d5b892008-10-22 00:46:36 +090049/*
50 * vt8251 is different from other sata controllers of VIA. It has two
51 * channels, each channel has both Master and Slave slot.
52 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070053enum board_ids_enum {
54 vt6420,
55 vt6421,
Tejun Heob9d5b892008-10-22 00:46:36 +090056 vt8251,
Linus Torvalds1da177e2005-04-16 15:20:36 -070057};
58
59enum {
60 SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
61 SATA_INT_GATE = 0x41, /* SATA interrupt gating */
62 SATA_NATIVE_MODE = 0x42, /* Native mode enable */
Aland73f30e2007-01-08 17:11:13 +000063 PATA_UDMA_TIMING = 0xB3, /* PATA timing for DMA/ cable detect */
64 PATA_PIO_TIMING = 0xAB, /* PATA timing register */
Jeff Garzika84471f2007-02-26 05:51:33 -050065
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 PORT0 = (1 << 1),
67 PORT1 = (1 << 0),
68 ALL_PORTS = PORT0 | PORT1,
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
70 NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
71
72 SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
Linus Torvalds1da177e2005-04-16 15:20:36 -070073};
74
Jeff Garzik5796d1c2007-10-26 00:03:37 -040075static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
Tejun Heo82ef04f2008-07-31 17:02:40 +090076static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
77static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
Tejun Heob9d5b892008-10-22 00:46:36 +090078static int vt8251_scr_read(struct ata_link *link, unsigned int scr, u32 *val);
79static int vt8251_scr_write(struct ata_link *link, unsigned int scr, u32 val);
Tejun Heob78152e2008-10-22 00:45:57 +090080static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
Tejun Heo17234242007-01-25 20:46:59 +090081static void svia_noop_freeze(struct ata_port *ap);
Tejun Heoa1efdab2008-03-25 12:22:50 +090082static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
Jeff Garzika0fcdc02007-03-09 07:24:15 -050083static int vt6421_pata_cable_detect(struct ata_port *ap);
Aland73f30e2007-01-08 17:11:13 +000084static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev);
85static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
Jeff Garzik3b7d6972005-11-10 11:04:11 -050087static const struct pci_device_id svia_pci_tbl[] = {
Luca Pedrielli96bc1032007-01-16 12:55:04 +090088 { PCI_VDEVICE(VIA, 0x5337), vt6420 },
Tejun Heob9d5b892008-10-22 00:46:36 +090089 { PCI_VDEVICE(VIA, 0x0591), vt6420 }, /* 2 sata chnls (Master) */
90 { PCI_VDEVICE(VIA, 0x3149), vt6420 }, /* 2 sata chnls (Master) */
91 { PCI_VDEVICE(VIA, 0x3249), vt6421 }, /* 2 sata chnls, 1 pata chnl */
Jeff Garzik52df0ee2007-05-25 05:02:06 -040092 { PCI_VDEVICE(VIA, 0x5372), vt6420 },
93 { PCI_VDEVICE(VIA, 0x7372), vt6420 },
Tejun Heob9d5b892008-10-22 00:46:36 +090094 { PCI_VDEVICE(VIA, 0x5287), vt8251 }, /* 2 sata chnls (Master/Slave) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
96 { } /* terminate list */
97};
98
99static struct pci_driver svia_pci_driver = {
100 .name = DRV_NAME,
101 .id_table = svia_pci_tbl,
102 .probe = svia_init_one,
Tejun Heoe1e143c2007-05-04 15:30:34 +0200103#ifdef CONFIG_PM
104 .suspend = ata_pci_device_suspend,
105 .resume = ata_pci_device_resume,
106#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107 .remove = ata_pci_remove_one,
108};
109
Jeff Garzik193515d2005-11-07 00:59:37 -0500110static struct scsi_host_template svia_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900111 ATA_BMDMA_SHT(DRV_NAME),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112};
113
Tejun Heob78152e2008-10-22 00:45:57 +0900114static struct ata_port_operations svia_base_ops = {
Tejun Heo029cfd62008-03-25 12:22:49 +0900115 .inherits = &ata_bmdma_port_ops,
Tejun Heob78152e2008-10-22 00:45:57 +0900116 .sff_tf_load = svia_tf_load,
117};
118
119static struct ata_port_operations vt6420_sata_ops = {
120 .inherits = &svia_base_ops,
Tejun Heo17234242007-01-25 20:46:59 +0900121 .freeze = svia_noop_freeze,
Tejun Heoa1efdab2008-03-25 12:22:50 +0900122 .prereset = vt6420_prereset,
Tejun Heoac2164d2006-08-23 01:00:27 +0900123};
124
Tejun Heo029cfd62008-03-25 12:22:49 +0900125static struct ata_port_operations vt6421_pata_ops = {
Tejun Heob78152e2008-10-22 00:45:57 +0900126 .inherits = &svia_base_ops,
Tejun Heo029cfd62008-03-25 12:22:49 +0900127 .cable_detect = vt6421_pata_cable_detect,
Aland73f30e2007-01-08 17:11:13 +0000128 .set_piomode = vt6421_set_pio_mode,
129 .set_dmamode = vt6421_set_dma_mode,
Aland73f30e2007-01-08 17:11:13 +0000130};
131
Tejun Heo029cfd62008-03-25 12:22:49 +0900132static struct ata_port_operations vt6421_sata_ops = {
Tejun Heob78152e2008-10-22 00:45:57 +0900133 .inherits = &svia_base_ops,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 .scr_read = svia_scr_read,
135 .scr_write = svia_scr_write,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136};
137
Tejun Heob9d5b892008-10-22 00:46:36 +0900138static struct ata_port_operations vt8251_ops = {
139 .inherits = &svia_base_ops,
140 .hardreset = sata_std_hardreset,
141 .scr_read = vt8251_scr_read,
142 .scr_write = vt8251_scr_write,
143};
144
Tejun Heoeca25dc2007-04-17 23:44:07 +0900145static const struct ata_port_info vt6420_port_info = {
Jeff Garzikcca39742006-08-24 03:19:22 -0400146 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 .pio_mask = 0x1f,
148 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400149 .udma_mask = ATA_UDMA6,
Tejun Heoac2164d2006-08-23 01:00:27 +0900150 .port_ops = &vt6420_sata_ops,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151};
152
Tejun Heoeca25dc2007-04-17 23:44:07 +0900153static struct ata_port_info vt6421_sport_info = {
154 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
155 .pio_mask = 0x1f,
156 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400157 .udma_mask = ATA_UDMA6,
Tejun Heoeca25dc2007-04-17 23:44:07 +0900158 .port_ops = &vt6421_sata_ops,
159};
160
161static struct ata_port_info vt6421_pport_info = {
162 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_LEGACY,
163 .pio_mask = 0x1f,
164 .mwdma_mask = 0,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400165 .udma_mask = ATA_UDMA6,
Tejun Heoeca25dc2007-04-17 23:44:07 +0900166 .port_ops = &vt6421_pata_ops,
167};
168
Tejun Heob9d5b892008-10-22 00:46:36 +0900169static struct ata_port_info vt8251_port_info = {
170 .flags = ATA_FLAG_SATA | ATA_FLAG_SLAVE_POSS |
171 ATA_FLAG_NO_LEGACY,
172 .pio_mask = 0x1f,
173 .mwdma_mask = 0x07,
174 .udma_mask = ATA_UDMA6,
175 .port_ops = &vt8251_ops,
176};
177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178MODULE_AUTHOR("Jeff Garzik");
179MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
180MODULE_LICENSE("GPL");
181MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
182MODULE_VERSION(DRV_VERSION);
183
Tejun Heo82ef04f2008-07-31 17:02:40 +0900184static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185{
186 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +0900187 return -EINVAL;
Tejun Heo82ef04f2008-07-31 17:02:40 +0900188 *val = ioread32(link->ap->ioaddr.scr_addr + (4 * sc_reg));
Tejun Heoda3dbb12007-07-16 14:29:40 +0900189 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190}
191
Tejun Heo82ef04f2008-07-31 17:02:40 +0900192static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193{
194 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +0900195 return -EINVAL;
Tejun Heo82ef04f2008-07-31 17:02:40 +0900196 iowrite32(val, link->ap->ioaddr.scr_addr + (4 * sc_reg));
Tejun Heoda3dbb12007-07-16 14:29:40 +0900197 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198}
199
Tejun Heob9d5b892008-10-22 00:46:36 +0900200static int vt8251_scr_read(struct ata_link *link, unsigned int scr, u32 *val)
201{
202 static const u8 ipm_tbl[] = { 1, 2, 6, 0 };
203 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
204 int slot = 2 * link->ap->port_no + link->pmp;
205 u32 v = 0;
206 u8 raw;
207
208 switch (scr) {
209 case SCR_STATUS:
210 pci_read_config_byte(pdev, 0xA0 + slot, &raw);
211
212 /* read the DET field, bit0 and 1 of the config byte */
213 v |= raw & 0x03;
214
215 /* read the SPD field, bit4 of the configure byte */
216 if (raw & (1 << 4))
217 v |= 0x02 << 4;
218 else
219 v |= 0x01 << 4;
220
221 /* read the IPM field, bit2 and 3 of the config byte */
222 v |= ipm_tbl[(raw >> 2) & 0x3];
223 break;
224
225 case SCR_ERROR:
226 /* devices other than 5287 uses 0xA8 as base */
227 WARN_ON(pdev->device != 0x5287);
228 pci_read_config_dword(pdev, 0xB0 + slot * 4, &v);
229 break;
230
231 case SCR_CONTROL:
232 pci_read_config_byte(pdev, 0xA4 + slot, &raw);
233
234 /* read the DET field, bit0 and bit1 */
235 v |= ((raw & 0x02) << 1) | (raw & 0x01);
236
237 /* read the IPM field, bit2 and bit3 */
238 v |= ((raw >> 2) & 0x03) << 8;
239 break;
240
241 default:
242 return -EINVAL;
243 }
244
245 *val = v;
246 return 0;
247}
248
249static int vt8251_scr_write(struct ata_link *link, unsigned int scr, u32 val)
250{
251 struct pci_dev *pdev = to_pci_dev(link->ap->host->dev);
252 int slot = 2 * link->ap->port_no + link->pmp;
253 u32 v = 0;
254
255 switch (scr) {
256 case SCR_ERROR:
257 /* devices other than 5287 uses 0xA8 as base */
258 WARN_ON(pdev->device != 0x5287);
259 pci_write_config_dword(pdev, 0xB0 + slot * 4, val);
260 return 0;
261
262 case SCR_CONTROL:
263 /* set the DET field */
264 v |= ((val & 0x4) >> 1) | (val & 0x1);
265
266 /* set the IPM field */
267 v |= ((val >> 8) & 0x3) << 2;
268
269 pci_write_config_byte(pdev, 0xA4 + slot, v);
270 return 0;
271
272 default:
273 return -EINVAL;
274 }
275}
276
Tejun Heob78152e2008-10-22 00:45:57 +0900277/**
278 * svia_tf_load - send taskfile registers to host controller
279 * @ap: Port to which output is sent
280 * @tf: ATA taskfile register set
281 *
282 * Outputs ATA taskfile to standard ATA host controller.
283 *
284 * This is to fix the internal bug of via chipsets, which will
285 * reset the device register after changing the IEN bit on ctl
286 * register.
287 */
288static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
289{
290 struct ata_taskfile ttf;
291
292 if (tf->ctl != ap->last_ctl) {
293 ttf = *tf;
294 ttf.flags |= ATA_TFLAG_DEVICE;
295 tf = &ttf;
296 }
297 ata_sff_tf_load(ap, tf);
298}
299
Tejun Heo17234242007-01-25 20:46:59 +0900300static void svia_noop_freeze(struct ata_port *ap)
301{
302 /* Some VIA controllers choke if ATA_NIEN is manipulated in
303 * certain way. Leave it alone and just clear pending IRQ.
304 */
Tejun Heo5682ed32008-04-07 22:47:16 +0900305 ap->ops->sff_check_status(ap);
Tejun Heo9363c382008-04-07 22:47:16 +0900306 ata_sff_irq_clear(ap);
Tejun Heo17234242007-01-25 20:46:59 +0900307}
308
Tejun Heoac2164d2006-08-23 01:00:27 +0900309/**
310 * vt6420_prereset - prereset for vt6420
Tejun Heocc0680a2007-08-06 18:36:23 +0900311 * @link: target ATA link
Tejun Heod4b2bab2007-02-02 16:50:52 +0900312 * @deadline: deadline jiffies for the operation
Tejun Heoac2164d2006-08-23 01:00:27 +0900313 *
314 * SCR registers on vt6420 are pieces of shit and may hang the
315 * whole machine completely if accessed with the wrong timing.
316 * To avoid such catastrophe, vt6420 doesn't provide generic SCR
317 * access operations, but uses SStatus and SControl only during
318 * boot probing in controlled way.
319 *
320 * As the old (pre EH update) probing code is proven to work, we
321 * strictly follow the access pattern.
322 *
323 * LOCKING:
324 * Kernel thread context (may sleep)
325 *
326 * RETURNS:
327 * 0 on success, -errno otherwise.
328 */
Tejun Heocc0680a2007-08-06 18:36:23 +0900329static int vt6420_prereset(struct ata_link *link, unsigned long deadline)
Tejun Heoac2164d2006-08-23 01:00:27 +0900330{
Tejun Heocc0680a2007-08-06 18:36:23 +0900331 struct ata_port *ap = link->ap;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900332 struct ata_eh_context *ehc = &ap->link.eh_context;
Tejun Heoac2164d2006-08-23 01:00:27 +0900333 unsigned long timeout = jiffies + (HZ * 5);
334 u32 sstatus, scontrol;
335 int online;
336
337 /* don't do any SCR stuff if we're not loading */
Jeff Garzik68ff6e82006-11-08 07:46:02 -0500338 if (!(ap->pflags & ATA_PFLAG_LOADING))
Tejun Heoac2164d2006-08-23 01:00:27 +0900339 goto skip_scr;
340
Jeff Garzika09060f2007-05-28 08:17:06 -0400341 /* Resume phy. This is the old SATA resume sequence */
Tejun Heo82ef04f2008-07-31 17:02:40 +0900342 svia_scr_write(link, SCR_CONTROL, 0x300);
343 svia_scr_read(link, SCR_CONTROL, &scontrol); /* flush */
Tejun Heoac2164d2006-08-23 01:00:27 +0900344
345 /* wait for phy to become ready, if necessary */
346 do {
347 msleep(200);
Tejun Heo82ef04f2008-07-31 17:02:40 +0900348 svia_scr_read(link, SCR_STATUS, &sstatus);
Tejun Heoda3dbb12007-07-16 14:29:40 +0900349 if ((sstatus & 0xf) != 1)
Tejun Heoac2164d2006-08-23 01:00:27 +0900350 break;
351 } while (time_before(jiffies, timeout));
352
353 /* open code sata_print_link_status() */
Tejun Heo82ef04f2008-07-31 17:02:40 +0900354 svia_scr_read(link, SCR_STATUS, &sstatus);
355 svia_scr_read(link, SCR_CONTROL, &scontrol);
Tejun Heoac2164d2006-08-23 01:00:27 +0900356
357 online = (sstatus & 0xf) == 0x3;
358
359 ata_port_printk(ap, KERN_INFO,
360 "SATA link %s 1.5 Gbps (SStatus %X SControl %X)\n",
361 online ? "up" : "down", sstatus, scontrol);
362
363 /* SStatus is read one more time */
Tejun Heo82ef04f2008-07-31 17:02:40 +0900364 svia_scr_read(link, SCR_STATUS, &sstatus);
Tejun Heoac2164d2006-08-23 01:00:27 +0900365
366 if (!online) {
367 /* tell EH to bail */
Tejun Heocf480622008-01-24 00:05:14 +0900368 ehc->i.action &= ~ATA_EH_RESET;
Tejun Heoac2164d2006-08-23 01:00:27 +0900369 return 0;
370 }
371
372 skip_scr:
373 /* wait for !BSY */
Tejun Heo705e76b2008-04-07 22:47:19 +0900374 ata_sff_wait_ready(link, deadline);
Tejun Heoac2164d2006-08-23 01:00:27 +0900375
376 return 0;
377}
378
Jeff Garzika0fcdc02007-03-09 07:24:15 -0500379static int vt6421_pata_cable_detect(struct ata_port *ap)
Aland73f30e2007-01-08 17:11:13 +0000380{
381 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
382 u8 tmp;
383
384 pci_read_config_byte(pdev, PATA_UDMA_TIMING, &tmp);
385 if (tmp & 0x10)
Jeff Garzika0fcdc02007-03-09 07:24:15 -0500386 return ATA_CBL_PATA40;
387 return ATA_CBL_PATA80;
Aland73f30e2007-01-08 17:11:13 +0000388}
389
390static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev)
391{
392 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
393 static const u8 pio_bits[] = { 0xA8, 0x65, 0x65, 0x31, 0x20 };
394 pci_write_config_byte(pdev, PATA_PIO_TIMING, pio_bits[adev->pio_mode - XFER_PIO_0]);
395}
396
397static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev)
398{
399 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
400 static const u8 udma_bits[] = { 0xEE, 0xE8, 0xE6, 0xE4, 0xE2, 0xE1, 0xE0, 0xE0 };
Ondrej Zaryb4154d42007-09-01 00:55:21 +0200401 pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->dma_mode - XFER_UDMA_0]);
Aland73f30e2007-01-08 17:11:13 +0000402}
403
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404static const unsigned int svia_bar_sizes[] = {
405 8, 4, 8, 4, 16, 256
406};
407
408static const unsigned int vt6421_bar_sizes[] = {
409 16, 16, 16, 16, 32, 128
410};
411
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400412static void __iomem *svia_scr_addr(void __iomem *addr, unsigned int port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413{
414 return addr + (port * 128);
415}
416
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400417static void __iomem *vt6421_scr_addr(void __iomem *addr, unsigned int port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
419 return addr + (port * 64);
420}
421
Tejun Heoeca25dc2007-04-17 23:44:07 +0900422static void vt6421_init_addrs(struct ata_port *ap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423{
Tejun Heoeca25dc2007-04-17 23:44:07 +0900424 void __iomem * const * iomap = ap->host->iomap;
425 void __iomem *reg_addr = iomap[ap->port_no];
426 void __iomem *bmdma_addr = iomap[4] + (ap->port_no * 8);
427 struct ata_ioports *ioaddr = &ap->ioaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428
Tejun Heoeca25dc2007-04-17 23:44:07 +0900429 ioaddr->cmd_addr = reg_addr;
430 ioaddr->altstatus_addr =
431 ioaddr->ctl_addr = (void __iomem *)
Tejun Heo0d5ff562007-02-01 15:06:36 +0900432 ((unsigned long)(reg_addr + 8) | ATA_PCI_CTL_OFS);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900433 ioaddr->bmdma_addr = bmdma_addr;
434 ioaddr->scr_addr = vt6421_scr_addr(iomap[5], ap->port_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435
Tejun Heo9363c382008-04-07 22:47:16 +0900436 ata_sff_std_ports(ioaddr);
Tejun Heocbcdd872007-08-18 13:14:55 +0900437
438 ata_port_pbar_desc(ap, ap->port_no, -1, "port");
439 ata_port_pbar_desc(ap, 4, ap->port_no * 8, "bmdma");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440}
441
Tejun Heoeca25dc2007-04-17 23:44:07 +0900442static int vt6420_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443{
Tejun Heoeca25dc2007-04-17 23:44:07 +0900444 const struct ata_port_info *ppi[] = { &vt6420_port_info, NULL };
445 struct ata_host *host;
446 int rc;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500447
Tejun Heo9363c382008-04-07 22:47:16 +0900448 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900449 if (rc)
450 return rc;
451 *r_host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
Tejun Heoeca25dc2007-04-17 23:44:07 +0900453 rc = pcim_iomap_regions(pdev, 1 << 5, DRV_NAME);
454 if (rc) {
Tejun Heoe1be5d72007-02-20 20:01:53 +0900455 dev_printk(KERN_ERR, &pdev->dev, "failed to iomap PCI BAR 5\n");
Tejun Heoeca25dc2007-04-17 23:44:07 +0900456 return rc;
Tejun Heoe1be5d72007-02-20 20:01:53 +0900457 }
458
Tejun Heoeca25dc2007-04-17 23:44:07 +0900459 host->ports[0]->ioaddr.scr_addr = svia_scr_addr(host->iomap[5], 0);
460 host->ports[1]->ioaddr.scr_addr = svia_scr_addr(host->iomap[5], 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461
Tejun Heoeca25dc2007-04-17 23:44:07 +0900462 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463}
464
Tejun Heoeca25dc2007-04-17 23:44:07 +0900465static int vt6421_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466{
Tejun Heoeca25dc2007-04-17 23:44:07 +0900467 const struct ata_port_info *ppi[] =
468 { &vt6421_sport_info, &vt6421_sport_info, &vt6421_pport_info };
469 struct ata_host *host;
470 int i, rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471
Tejun Heoeca25dc2007-04-17 23:44:07 +0900472 *r_host = host = ata_host_alloc_pinfo(&pdev->dev, ppi, ARRAY_SIZE(ppi));
473 if (!host) {
474 dev_printk(KERN_ERR, &pdev->dev, "failed to allocate host\n");
475 return -ENOMEM;
476 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477
Tejun Heo8fd7d1b2007-05-17 13:37:12 +0200478 rc = pcim_iomap_regions(pdev, 0x3f, DRV_NAME);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900479 if (rc) {
480 dev_printk(KERN_ERR, &pdev->dev, "failed to request/iomap "
481 "PCI BARs (errno=%d)\n", rc);
482 return rc;
483 }
484 host->iomap = pcim_iomap_table(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485
Tejun Heoeca25dc2007-04-17 23:44:07 +0900486 for (i = 0; i < host->n_ports; i++)
487 vt6421_init_addrs(host->ports[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488
Tejun Heoeca25dc2007-04-17 23:44:07 +0900489 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
490 if (rc)
491 return rc;
492 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
493 if (rc)
494 return rc;
Tejun Heoe1be5d72007-02-20 20:01:53 +0900495
Tejun Heoeca25dc2007-04-17 23:44:07 +0900496 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497}
498
Tejun Heob9d5b892008-10-22 00:46:36 +0900499static int vt8251_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
500{
501 const struct ata_port_info *ppi[] = { &vt8251_port_info, NULL };
502 struct ata_host *host;
503 int i, rc;
504
505 rc = ata_pci_sff_prepare_host(pdev, ppi, &host);
506 if (rc)
507 return rc;
508 *r_host = host;
509
510 rc = pcim_iomap_regions(pdev, 1 << 5, DRV_NAME);
511 if (rc) {
512 dev_printk(KERN_ERR, &pdev->dev, "failed to iomap PCI BAR 5\n");
513 return rc;
514 }
515
516 /* 8251 hosts four sata ports as M/S of the two channels */
517 for (i = 0; i < host->n_ports; i++)
518 ata_slave_link_init(host->ports[i]);
519
520 return 0;
521}
522
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523static void svia_configure(struct pci_dev *pdev)
524{
525 u8 tmp8;
526
527 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
Jeff Garzika9524a72005-10-30 14:39:11 -0500528 dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
530
531 /* make sure SATA channels are enabled */
532 pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
533 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500534 dev_printk(KERN_DEBUG, &pdev->dev,
535 "enabling SATA channels (0x%x)\n",
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400536 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 tmp8 |= ALL_PORTS;
538 pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
539 }
540
541 /* make sure interrupts for each channel sent to us */
542 pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
543 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500544 dev_printk(KERN_DEBUG, &pdev->dev,
545 "enabling SATA channel interrupts (0x%x)\n",
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400546 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 tmp8 |= ALL_PORTS;
548 pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
549 }
550
551 /* make sure native mode is enabled */
552 pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
553 if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500554 dev_printk(KERN_DEBUG, &pdev->dev,
555 "enabling SATA channel native mode (0x%x)\n",
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400556 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 tmp8 |= NATIVE_MODE_ALL;
558 pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
559 }
560}
561
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400562static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563{
564 static int printed_version;
565 unsigned int i;
566 int rc;
Tejun Heoeca25dc2007-04-17 23:44:07 +0900567 struct ata_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 int board_id = (int) ent->driver_data;
Al Virob4482a42007-10-14 19:35:40 +0100569 const unsigned *bar_sizes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
571 if (!printed_version++)
Jeff Garzika9524a72005-10-30 14:39:11 -0500572 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573
Tejun Heo24dc5f32007-01-20 16:00:28 +0900574 rc = pcim_enable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575 if (rc)
576 return rc;
577
Tejun Heob9d5b892008-10-22 00:46:36 +0900578 if (board_id == vt6421)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 bar_sizes = &vt6421_bar_sizes[0];
Tejun Heob9d5b892008-10-22 00:46:36 +0900580 else
581 bar_sizes = &svia_bar_sizes[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582
583 for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
584 if ((pci_resource_start(pdev, i) == 0) ||
585 (pci_resource_len(pdev, i) < bar_sizes[i])) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500586 dev_printk(KERN_ERR, &pdev->dev,
Greg Kroah-Hartmane29419f2006-06-12 15:20:16 -0700587 "invalid PCI BAR %u (sz 0x%llx, val 0x%llx)\n",
588 i,
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400589 (unsigned long long)pci_resource_start(pdev, i),
590 (unsigned long long)pci_resource_len(pdev, i));
Tejun Heo24dc5f32007-01-20 16:00:28 +0900591 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700592 }
593
Tejun Heob9d5b892008-10-22 00:46:36 +0900594 switch (board_id) {
595 case vt6420:
Tejun Heoeca25dc2007-04-17 23:44:07 +0900596 rc = vt6420_prepare_host(pdev, &host);
Tejun Heob9d5b892008-10-22 00:46:36 +0900597 break;
598 case vt6421:
Tejun Heoeca25dc2007-04-17 23:44:07 +0900599 rc = vt6421_prepare_host(pdev, &host);
Tejun Heob9d5b892008-10-22 00:46:36 +0900600 break;
601 case vt8251:
602 rc = vt8251_prepare_host(pdev, &host);
603 break;
604 default:
Marcin Slusarz554d4912008-11-02 22:18:52 +0100605 rc = -EINVAL;
Tejun Heob9d5b892008-10-22 00:46:36 +0900606 }
Marcin Slusarz554d4912008-11-02 22:18:52 +0100607 if (rc)
608 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609
610 svia_configure(pdev);
611
612 pci_set_master(pdev);
Tejun Heo9363c382008-04-07 22:47:16 +0900613 return ata_host_activate(host, pdev->irq, ata_sff_interrupt,
614 IRQF_SHARED, &svia_sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615}
616
617static int __init svia_init(void)
618{
Pavel Roskinb7887192006-08-10 18:13:18 +0900619 return pci_register_driver(&svia_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620}
621
622static void __exit svia_exit(void)
623{
624 pci_unregister_driver(&svia_pci_driver);
625}
626
627module_init(svia_init);
628module_exit(svia_exit);