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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"
Jeff Garzik2a3103c2007-08-31 04:54:06 -040047#define DRV_VERSION "2.3"
Linus Torvalds1da177e2005-04-16 15:20:36 -070048
49enum board_ids_enum {
50 vt6420,
51 vt6421,
52};
53
54enum {
55 SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
56 SATA_INT_GATE = 0x41, /* SATA interrupt gating */
57 SATA_NATIVE_MODE = 0x42, /* Native mode enable */
Aland73f30e2007-01-08 17:11:13 +000058 PATA_UDMA_TIMING = 0xB3, /* PATA timing for DMA/ cable detect */
59 PATA_PIO_TIMING = 0xAB, /* PATA timing register */
Jeff Garzika84471f2007-02-26 05:51:33 -050060
Linus Torvalds1da177e2005-04-16 15:20:36 -070061 PORT0 = (1 << 1),
62 PORT1 = (1 << 0),
63 ALL_PORTS = PORT0 | PORT1,
Linus Torvalds1da177e2005-04-16 15:20:36 -070064
65 NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
66
67 SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
Linus Torvalds1da177e2005-04-16 15:20:36 -070068};
69
Jeff Garzik5796d1c2007-10-26 00:03:37 -040070static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
Tejun Heoda3dbb12007-07-16 14:29:40 +090071static int svia_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
72static int svia_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
Tejun Heo17234242007-01-25 20:46:59 +090073static void svia_noop_freeze(struct ata_port *ap);
Tejun Heoa1efdab2008-03-25 12:22:50 +090074static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
Jeff Garzika0fcdc02007-03-09 07:24:15 -050075static int vt6421_pata_cable_detect(struct ata_port *ap);
Aland73f30e2007-01-08 17:11:13 +000076static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev);
77static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070078
Jeff Garzik3b7d6972005-11-10 11:04:11 -050079static const struct pci_device_id svia_pci_tbl[] = {
Luca Pedrielli96bc1032007-01-16 12:55:04 +090080 { PCI_VDEVICE(VIA, 0x5337), vt6420 },
Jeff Garzik2d2744f2006-09-28 20:21:59 -040081 { PCI_VDEVICE(VIA, 0x0591), vt6420 },
82 { PCI_VDEVICE(VIA, 0x3149), vt6420 },
83 { PCI_VDEVICE(VIA, 0x3249), vt6421 },
Jeff Garzik52df0ee2007-05-25 05:02:06 -040084 { PCI_VDEVICE(VIA, 0x5287), vt6420 },
85 { PCI_VDEVICE(VIA, 0x5372), vt6420 },
86 { PCI_VDEVICE(VIA, 0x7372), vt6420 },
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
88 { } /* terminate list */
89};
90
91static struct pci_driver svia_pci_driver = {
92 .name = DRV_NAME,
93 .id_table = svia_pci_tbl,
94 .probe = svia_init_one,
Tejun Heoe1e143c2007-05-04 15:30:34 +020095#ifdef CONFIG_PM
96 .suspend = ata_pci_device_suspend,
97 .resume = ata_pci_device_resume,
98#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 .remove = ata_pci_remove_one,
100};
101
Jeff Garzik193515d2005-11-07 00:59:37 -0500102static struct scsi_host_template svia_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900103 ATA_BMDMA_SHT(DRV_NAME),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104};
105
Tejun Heo029cfd62008-03-25 12:22:49 +0900106static struct ata_port_operations vt6420_sata_ops = {
107 .inherits = &ata_bmdma_port_ops,
Tejun Heo17234242007-01-25 20:46:59 +0900108 .freeze = svia_noop_freeze,
Tejun Heoa1efdab2008-03-25 12:22:50 +0900109 .prereset = vt6420_prereset,
Tejun Heoac2164d2006-08-23 01:00:27 +0900110};
111
Tejun Heo029cfd62008-03-25 12:22:49 +0900112static struct ata_port_operations vt6421_pata_ops = {
113 .inherits = &ata_bmdma_port_ops,
114 .cable_detect = vt6421_pata_cable_detect,
Aland73f30e2007-01-08 17:11:13 +0000115 .set_piomode = vt6421_set_pio_mode,
116 .set_dmamode = vt6421_set_dma_mode,
Aland73f30e2007-01-08 17:11:13 +0000117};
118
Tejun Heo029cfd62008-03-25 12:22:49 +0900119static struct ata_port_operations vt6421_sata_ops = {
120 .inherits = &ata_bmdma_port_ops,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 .scr_read = svia_scr_read,
122 .scr_write = svia_scr_write,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123};
124
Tejun Heoeca25dc2007-04-17 23:44:07 +0900125static const struct ata_port_info vt6420_port_info = {
Jeff Garzikcca39742006-08-24 03:19:22 -0400126 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127 .pio_mask = 0x1f,
128 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400129 .udma_mask = ATA_UDMA6,
Tejun Heoac2164d2006-08-23 01:00:27 +0900130 .port_ops = &vt6420_sata_ops,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131};
132
Tejun Heoeca25dc2007-04-17 23:44:07 +0900133static struct ata_port_info vt6421_sport_info = {
134 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY,
135 .pio_mask = 0x1f,
136 .mwdma_mask = 0x07,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400137 .udma_mask = ATA_UDMA6,
Tejun Heoeca25dc2007-04-17 23:44:07 +0900138 .port_ops = &vt6421_sata_ops,
139};
140
141static struct ata_port_info vt6421_pport_info = {
142 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_LEGACY,
143 .pio_mask = 0x1f,
144 .mwdma_mask = 0,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400145 .udma_mask = ATA_UDMA6,
Tejun Heoeca25dc2007-04-17 23:44:07 +0900146 .port_ops = &vt6421_pata_ops,
147};
148
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149MODULE_AUTHOR("Jeff Garzik");
150MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
151MODULE_LICENSE("GPL");
152MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
153MODULE_VERSION(DRV_VERSION);
154
Tejun Heoda3dbb12007-07-16 14:29:40 +0900155static int svia_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156{
157 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +0900158 return -EINVAL;
159 *val = ioread32(ap->ioaddr.scr_addr + (4 * sc_reg));
160 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161}
162
Tejun Heoda3dbb12007-07-16 14:29:40 +0900163static int svia_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164{
165 if (sc_reg > SCR_CONTROL)
Tejun Heoda3dbb12007-07-16 14:29:40 +0900166 return -EINVAL;
Tejun Heo0d5ff562007-02-01 15:06:36 +0900167 iowrite32(val, ap->ioaddr.scr_addr + (4 * sc_reg));
Tejun Heoda3dbb12007-07-16 14:29:40 +0900168 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169}
170
Tejun Heo17234242007-01-25 20:46:59 +0900171static void svia_noop_freeze(struct ata_port *ap)
172{
173 /* Some VIA controllers choke if ATA_NIEN is manipulated in
174 * certain way. Leave it alone and just clear pending IRQ.
175 */
176 ata_chk_status(ap);
Tejun Heod02598722007-01-26 14:57:31 +0900177 ata_bmdma_irq_clear(ap);
Tejun Heo17234242007-01-25 20:46:59 +0900178}
179
Tejun Heoac2164d2006-08-23 01:00:27 +0900180/**
181 * vt6420_prereset - prereset for vt6420
Tejun Heocc0680a2007-08-06 18:36:23 +0900182 * @link: target ATA link
Tejun Heod4b2bab2007-02-02 16:50:52 +0900183 * @deadline: deadline jiffies for the operation
Tejun Heoac2164d2006-08-23 01:00:27 +0900184 *
185 * SCR registers on vt6420 are pieces of shit and may hang the
186 * whole machine completely if accessed with the wrong timing.
187 * To avoid such catastrophe, vt6420 doesn't provide generic SCR
188 * access operations, but uses SStatus and SControl only during
189 * boot probing in controlled way.
190 *
191 * As the old (pre EH update) probing code is proven to work, we
192 * strictly follow the access pattern.
193 *
194 * LOCKING:
195 * Kernel thread context (may sleep)
196 *
197 * RETURNS:
198 * 0 on success, -errno otherwise.
199 */
Tejun Heocc0680a2007-08-06 18:36:23 +0900200static int vt6420_prereset(struct ata_link *link, unsigned long deadline)
Tejun Heoac2164d2006-08-23 01:00:27 +0900201{
Tejun Heocc0680a2007-08-06 18:36:23 +0900202 struct ata_port *ap = link->ap;
Tejun Heo9af5c9c2007-08-06 18:36:22 +0900203 struct ata_eh_context *ehc = &ap->link.eh_context;
Tejun Heoac2164d2006-08-23 01:00:27 +0900204 unsigned long timeout = jiffies + (HZ * 5);
205 u32 sstatus, scontrol;
206 int online;
207
208 /* don't do any SCR stuff if we're not loading */
Jeff Garzik68ff6e82006-11-08 07:46:02 -0500209 if (!(ap->pflags & ATA_PFLAG_LOADING))
Tejun Heoac2164d2006-08-23 01:00:27 +0900210 goto skip_scr;
211
Jeff Garzika09060f2007-05-28 08:17:06 -0400212 /* Resume phy. This is the old SATA resume sequence */
Tejun Heoac2164d2006-08-23 01:00:27 +0900213 svia_scr_write(ap, SCR_CONTROL, 0x300);
Tejun Heoda3dbb12007-07-16 14:29:40 +0900214 svia_scr_read(ap, SCR_CONTROL, &scontrol); /* flush */
Tejun Heoac2164d2006-08-23 01:00:27 +0900215
216 /* wait for phy to become ready, if necessary */
217 do {
218 msleep(200);
Tejun Heoda3dbb12007-07-16 14:29:40 +0900219 svia_scr_read(ap, SCR_STATUS, &sstatus);
220 if ((sstatus & 0xf) != 1)
Tejun Heoac2164d2006-08-23 01:00:27 +0900221 break;
222 } while (time_before(jiffies, timeout));
223
224 /* open code sata_print_link_status() */
Tejun Heoda3dbb12007-07-16 14:29:40 +0900225 svia_scr_read(ap, SCR_STATUS, &sstatus);
226 svia_scr_read(ap, SCR_CONTROL, &scontrol);
Tejun Heoac2164d2006-08-23 01:00:27 +0900227
228 online = (sstatus & 0xf) == 0x3;
229
230 ata_port_printk(ap, KERN_INFO,
231 "SATA link %s 1.5 Gbps (SStatus %X SControl %X)\n",
232 online ? "up" : "down", sstatus, scontrol);
233
234 /* SStatus is read one more time */
Tejun Heoda3dbb12007-07-16 14:29:40 +0900235 svia_scr_read(ap, SCR_STATUS, &sstatus);
Tejun Heoac2164d2006-08-23 01:00:27 +0900236
237 if (!online) {
238 /* tell EH to bail */
Tejun Heocf480622008-01-24 00:05:14 +0900239 ehc->i.action &= ~ATA_EH_RESET;
Tejun Heoac2164d2006-08-23 01:00:27 +0900240 return 0;
241 }
242
243 skip_scr:
244 /* wait for !BSY */
Tejun Heod4b2bab2007-02-02 16:50:52 +0900245 ata_wait_ready(ap, deadline);
Tejun Heoac2164d2006-08-23 01:00:27 +0900246
247 return 0;
248}
249
Jeff Garzika0fcdc02007-03-09 07:24:15 -0500250static int vt6421_pata_cable_detect(struct ata_port *ap)
Aland73f30e2007-01-08 17:11:13 +0000251{
252 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
253 u8 tmp;
254
255 pci_read_config_byte(pdev, PATA_UDMA_TIMING, &tmp);
256 if (tmp & 0x10)
Jeff Garzika0fcdc02007-03-09 07:24:15 -0500257 return ATA_CBL_PATA40;
258 return ATA_CBL_PATA80;
Aland73f30e2007-01-08 17:11:13 +0000259}
260
261static void vt6421_set_pio_mode(struct ata_port *ap, struct ata_device *adev)
262{
263 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
264 static const u8 pio_bits[] = { 0xA8, 0x65, 0x65, 0x31, 0x20 };
265 pci_write_config_byte(pdev, PATA_PIO_TIMING, pio_bits[adev->pio_mode - XFER_PIO_0]);
266}
267
268static void vt6421_set_dma_mode(struct ata_port *ap, struct ata_device *adev)
269{
270 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
271 static const u8 udma_bits[] = { 0xEE, 0xE8, 0xE6, 0xE4, 0xE2, 0xE1, 0xE0, 0xE0 };
Ondrej Zaryb4154d42007-09-01 00:55:21 +0200272 pci_write_config_byte(pdev, PATA_UDMA_TIMING, udma_bits[adev->dma_mode - XFER_UDMA_0]);
Aland73f30e2007-01-08 17:11:13 +0000273}
274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275static const unsigned int svia_bar_sizes[] = {
276 8, 4, 8, 4, 16, 256
277};
278
279static const unsigned int vt6421_bar_sizes[] = {
280 16, 16, 16, 16, 32, 128
281};
282
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400283static void __iomem *svia_scr_addr(void __iomem *addr, unsigned int port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284{
285 return addr + (port * 128);
286}
287
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400288static void __iomem *vt6421_scr_addr(void __iomem *addr, unsigned int port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289{
290 return addr + (port * 64);
291}
292
Tejun Heoeca25dc2007-04-17 23:44:07 +0900293static void vt6421_init_addrs(struct ata_port *ap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294{
Tejun Heoeca25dc2007-04-17 23:44:07 +0900295 void __iomem * const * iomap = ap->host->iomap;
296 void __iomem *reg_addr = iomap[ap->port_no];
297 void __iomem *bmdma_addr = iomap[4] + (ap->port_no * 8);
298 struct ata_ioports *ioaddr = &ap->ioaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
Tejun Heoeca25dc2007-04-17 23:44:07 +0900300 ioaddr->cmd_addr = reg_addr;
301 ioaddr->altstatus_addr =
302 ioaddr->ctl_addr = (void __iomem *)
Tejun Heo0d5ff562007-02-01 15:06:36 +0900303 ((unsigned long)(reg_addr + 8) | ATA_PCI_CTL_OFS);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900304 ioaddr->bmdma_addr = bmdma_addr;
305 ioaddr->scr_addr = vt6421_scr_addr(iomap[5], ap->port_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Tejun Heoeca25dc2007-04-17 23:44:07 +0900307 ata_std_ports(ioaddr);
Tejun Heocbcdd872007-08-18 13:14:55 +0900308
309 ata_port_pbar_desc(ap, ap->port_no, -1, "port");
310 ata_port_pbar_desc(ap, 4, ap->port_no * 8, "bmdma");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311}
312
Tejun Heoeca25dc2007-04-17 23:44:07 +0900313static int vt6420_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314{
Tejun Heoeca25dc2007-04-17 23:44:07 +0900315 const struct ata_port_info *ppi[] = { &vt6420_port_info, NULL };
316 struct ata_host *host;
317 int rc;
Jeff Garzikf20b16f2006-12-11 11:14:06 -0500318
Tejun Heod583bc12007-07-04 18:02:07 +0900319 rc = ata_pci_prepare_sff_host(pdev, ppi, &host);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900320 if (rc)
321 return rc;
322 *r_host = host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323
Tejun Heoeca25dc2007-04-17 23:44:07 +0900324 rc = pcim_iomap_regions(pdev, 1 << 5, DRV_NAME);
325 if (rc) {
Tejun Heoe1be5d72007-02-20 20:01:53 +0900326 dev_printk(KERN_ERR, &pdev->dev, "failed to iomap PCI BAR 5\n");
Tejun Heoeca25dc2007-04-17 23:44:07 +0900327 return rc;
Tejun Heoe1be5d72007-02-20 20:01:53 +0900328 }
329
Tejun Heoeca25dc2007-04-17 23:44:07 +0900330 host->ports[0]->ioaddr.scr_addr = svia_scr_addr(host->iomap[5], 0);
331 host->ports[1]->ioaddr.scr_addr = svia_scr_addr(host->iomap[5], 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332
Tejun Heoeca25dc2007-04-17 23:44:07 +0900333 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334}
335
Tejun Heoeca25dc2007-04-17 23:44:07 +0900336static int vt6421_prepare_host(struct pci_dev *pdev, struct ata_host **r_host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337{
Tejun Heoeca25dc2007-04-17 23:44:07 +0900338 const struct ata_port_info *ppi[] =
339 { &vt6421_sport_info, &vt6421_sport_info, &vt6421_pport_info };
340 struct ata_host *host;
341 int i, rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
Tejun Heoeca25dc2007-04-17 23:44:07 +0900343 *r_host = host = ata_host_alloc_pinfo(&pdev->dev, ppi, ARRAY_SIZE(ppi));
344 if (!host) {
345 dev_printk(KERN_ERR, &pdev->dev, "failed to allocate host\n");
346 return -ENOMEM;
347 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
Tejun Heo8fd7d1b2007-05-17 13:37:12 +0200349 rc = pcim_iomap_regions(pdev, 0x3f, DRV_NAME);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900350 if (rc) {
351 dev_printk(KERN_ERR, &pdev->dev, "failed to request/iomap "
352 "PCI BARs (errno=%d)\n", rc);
353 return rc;
354 }
355 host->iomap = pcim_iomap_table(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
Tejun Heoeca25dc2007-04-17 23:44:07 +0900357 for (i = 0; i < host->n_ports; i++)
358 vt6421_init_addrs(host->ports[i]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
Tejun Heoeca25dc2007-04-17 23:44:07 +0900360 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
361 if (rc)
362 return rc;
363 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
364 if (rc)
365 return rc;
Tejun Heoe1be5d72007-02-20 20:01:53 +0900366
Tejun Heoeca25dc2007-04-17 23:44:07 +0900367 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368}
369
370static void svia_configure(struct pci_dev *pdev)
371{
372 u8 tmp8;
373
374 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
Jeff Garzika9524a72005-10-30 14:39:11 -0500375 dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
377
378 /* make sure SATA channels are enabled */
379 pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
380 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500381 dev_printk(KERN_DEBUG, &pdev->dev,
382 "enabling SATA channels (0x%x)\n",
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400383 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 tmp8 |= ALL_PORTS;
385 pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
386 }
387
388 /* make sure interrupts for each channel sent to us */
389 pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
390 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500391 dev_printk(KERN_DEBUG, &pdev->dev,
392 "enabling SATA channel interrupts (0x%x)\n",
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400393 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 tmp8 |= ALL_PORTS;
395 pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
396 }
397
398 /* make sure native mode is enabled */
399 pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
400 if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500401 dev_printk(KERN_DEBUG, &pdev->dev,
402 "enabling SATA channel native mode (0x%x)\n",
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400403 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 tmp8 |= NATIVE_MODE_ALL;
405 pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
406 }
407}
408
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400409static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410{
411 static int printed_version;
412 unsigned int i;
413 int rc;
Tejun Heoeca25dc2007-04-17 23:44:07 +0900414 struct ata_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 int board_id = (int) ent->driver_data;
Al Virob4482a42007-10-14 19:35:40 +0100416 const unsigned *bar_sizes;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417
418 if (!printed_version++)
Jeff Garzika9524a72005-10-30 14:39:11 -0500419 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420
Tejun Heo24dc5f32007-01-20 16:00:28 +0900421 rc = pcim_enable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 if (rc)
423 return rc;
424
Tejun Heob6d6c742007-09-21 17:55:44 +0900425 if (board_id == vt6420)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 bar_sizes = &svia_bar_sizes[0];
Tejun Heob6d6c742007-09-21 17:55:44 +0900427 else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 bar_sizes = &vt6421_bar_sizes[0];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429
430 for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
431 if ((pci_resource_start(pdev, i) == 0) ||
432 (pci_resource_len(pdev, i) < bar_sizes[i])) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500433 dev_printk(KERN_ERR, &pdev->dev,
Greg Kroah-Hartmane29419f2006-06-12 15:20:16 -0700434 "invalid PCI BAR %u (sz 0x%llx, val 0x%llx)\n",
435 i,
Jeff Garzik5796d1c2007-10-26 00:03:37 -0400436 (unsigned long long)pci_resource_start(pdev, i),
437 (unsigned long long)pci_resource_len(pdev, i));
Tejun Heo24dc5f32007-01-20 16:00:28 +0900438 return -ENODEV;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 }
440
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 if (board_id == vt6420)
Tejun Heoeca25dc2007-04-17 23:44:07 +0900442 rc = vt6420_prepare_host(pdev, &host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 else
Tejun Heoeca25dc2007-04-17 23:44:07 +0900444 rc = vt6421_prepare_host(pdev, &host);
445 if (rc)
446 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447
448 svia_configure(pdev);
449
450 pci_set_master(pdev);
Tejun Heoeca25dc2007-04-17 23:44:07 +0900451 return ata_host_activate(host, pdev->irq, ata_interrupt, IRQF_SHARED,
452 &svia_sht);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700453}
454
455static int __init svia_init(void)
456{
Pavel Roskinb7887192006-08-10 18:13:18 +0900457 return pci_register_driver(&svia_pci_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458}
459
460static void __exit svia_exit(void)
461{
462 pci_unregister_driver(&svia_pci_driver);
463}
464
465module_init(svia_init);
466module_exit(svia_exit);