blob: ab19d2ba2a4bf163b0e70332475d1f493707f9e4 [file] [log] [blame]
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
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 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 *
33 * To-do list:
34 * - VT6421 PATA support
35 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 */
37
38#include <linux/kernel.h>
39#include <linux/module.h>
40#include <linux/pci.h>
41#include <linux/init.h>
42#include <linux/blkdev.h>
43#include <linux/delay.h>
Jeff Garzika9524a72005-10-30 14:39:11 -050044#include <linux/device.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <scsi/scsi_host.h>
46#include <linux/libata.h>
47#include <asm/io.h>
48
49#define DRV_NAME "sata_via"
50#define DRV_VERSION "1.1"
51
52enum board_ids_enum {
53 vt6420,
54 vt6421,
55};
56
57enum {
58 SATA_CHAN_ENAB = 0x40, /* SATA channel enable */
59 SATA_INT_GATE = 0x41, /* SATA interrupt gating */
60 SATA_NATIVE_MODE = 0x42, /* Native mode enable */
61 SATA_PATA_SHARING = 0x49, /* PATA/SATA sharing func ctrl */
62
63 PORT0 = (1 << 1),
64 PORT1 = (1 << 0),
65 ALL_PORTS = PORT0 | PORT1,
66 N_PORTS = 2,
67
68 NATIVE_MODE_ALL = (1 << 7) | (1 << 6) | (1 << 5) | (1 << 4),
69
70 SATA_EXT_PHY = (1 << 6), /* 0==use PATA, 1==ext phy */
71 SATA_2DEV = (1 << 5), /* SATA is master/slave */
72};
73
74static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
75static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
76static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
77
78static struct pci_device_id svia_pci_tbl[] = {
79 { 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
80 { 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
81
82 { } /* terminate list */
83};
84
85static struct pci_driver svia_pci_driver = {
86 .name = DRV_NAME,
87 .id_table = svia_pci_tbl,
88 .probe = svia_init_one,
89 .remove = ata_pci_remove_one,
90};
91
Jeff Garzik193515d2005-11-07 00:59:37 -050092static struct scsi_host_template svia_sht = {
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 .module = THIS_MODULE,
94 .name = DRV_NAME,
95 .ioctl = ata_scsi_ioctl,
96 .queuecommand = ata_scsi_queuecmd,
97 .eh_strategy_handler = ata_scsi_error,
98 .can_queue = ATA_DEF_QUEUE,
99 .this_id = ATA_SHT_THIS_ID,
100 .sg_tablesize = LIBATA_MAX_PRD,
101 .max_sectors = ATA_MAX_SECTORS,
102 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
103 .emulated = ATA_SHT_EMULATED,
104 .use_clustering = ATA_SHT_USE_CLUSTERING,
105 .proc_name = DRV_NAME,
106 .dma_boundary = ATA_DMA_BOUNDARY,
107 .slave_configure = ata_scsi_slave_config,
108 .bios_param = ata_std_bios_param,
109 .ordered_flush = 1,
110};
111
Jeff Garzik057ace52005-10-22 14:27:05 -0400112static const struct ata_port_operations svia_sata_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113 .port_disable = ata_port_disable,
114
115 .tf_load = ata_tf_load,
116 .tf_read = ata_tf_read,
117 .check_status = ata_check_status,
118 .exec_command = ata_exec_command,
119 .dev_select = ata_std_dev_select,
120
121 .phy_reset = sata_phy_reset,
122
123 .bmdma_setup = ata_bmdma_setup,
124 .bmdma_start = ata_bmdma_start,
125 .bmdma_stop = ata_bmdma_stop,
126 .bmdma_status = ata_bmdma_status,
127
128 .qc_prep = ata_qc_prep,
129 .qc_issue = ata_qc_issue_prot,
130
131 .eng_timeout = ata_eng_timeout,
132
133 .irq_handler = ata_interrupt,
134 .irq_clear = ata_bmdma_irq_clear,
135
136 .scr_read = svia_scr_read,
137 .scr_write = svia_scr_write,
138
139 .port_start = ata_port_start,
140 .port_stop = ata_port_stop,
Jeff Garzikaa8f0dc2005-05-26 21:54:27 -0400141 .host_stop = ata_host_stop,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142};
143
144static struct ata_port_info svia_port_info = {
145 .sht = &svia_sht,
146 .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
147 .pio_mask = 0x1f,
148 .mwdma_mask = 0x07,
149 .udma_mask = 0x7f,
150 .port_ops = &svia_sata_ops,
151};
152
153MODULE_AUTHOR("Jeff Garzik");
154MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
155MODULE_LICENSE("GPL");
156MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
157MODULE_VERSION(DRV_VERSION);
158
159static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
160{
161 if (sc_reg > SCR_CONTROL)
162 return 0xffffffffU;
163 return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
164}
165
166static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
167{
168 if (sc_reg > SCR_CONTROL)
169 return;
170 outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
171}
172
173static const unsigned int svia_bar_sizes[] = {
174 8, 4, 8, 4, 16, 256
175};
176
177static const unsigned int vt6421_bar_sizes[] = {
178 16, 16, 16, 16, 32, 128
179};
180
181static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
182{
183 return addr + (port * 128);
184}
185
186static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
187{
188 return addr + (port * 64);
189}
190
191static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
192 struct pci_dev *pdev,
193 unsigned int port)
194{
195 unsigned long reg_addr = pci_resource_start(pdev, port);
196 unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
197 unsigned long scr_addr;
198
199 probe_ent->port[port].cmd_addr = reg_addr;
200 probe_ent->port[port].altstatus_addr =
201 probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
202 probe_ent->port[port].bmdma_addr = bmdma_addr;
203
204 scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
205 probe_ent->port[port].scr_addr = scr_addr;
206
207 ata_std_ports(&probe_ent->port[port]);
208}
209
210static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
211{
212 struct ata_probe_ent *probe_ent;
213 struct ata_port_info *ppi = &svia_port_info;
214
Alan Cox47a86592005-10-04 08:09:19 -0400215 probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 if (!probe_ent)
217 return NULL;
218
219 probe_ent->port[0].scr_addr =
220 svia_scr_addr(pci_resource_start(pdev, 5), 0);
221 probe_ent->port[1].scr_addr =
222 svia_scr_addr(pci_resource_start(pdev, 5), 1);
223
224 return probe_ent;
225}
226
227static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
228{
229 struct ata_probe_ent *probe_ent;
230 unsigned int i;
231
232 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
233 if (!probe_ent)
234 return NULL;
235
236 memset(probe_ent, 0, sizeof(*probe_ent));
237 probe_ent->dev = pci_dev_to_dev(pdev);
238 INIT_LIST_HEAD(&probe_ent->node);
239
240 probe_ent->sht = &svia_sht;
241 probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
242 ATA_FLAG_NO_LEGACY;
243 probe_ent->port_ops = &svia_sata_ops;
244 probe_ent->n_ports = N_PORTS;
245 probe_ent->irq = pdev->irq;
246 probe_ent->irq_flags = SA_SHIRQ;
247 probe_ent->pio_mask = 0x1f;
248 probe_ent->mwdma_mask = 0x07;
249 probe_ent->udma_mask = 0x7f;
250
251 for (i = 0; i < N_PORTS; i++)
252 vt6421_init_addrs(probe_ent, pdev, i);
253
254 return probe_ent;
255}
256
257static void svia_configure(struct pci_dev *pdev)
258{
259 u8 tmp8;
260
261 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
Jeff Garzika9524a72005-10-30 14:39:11 -0500262 dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
264
265 /* make sure SATA channels are enabled */
266 pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
267 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500268 dev_printk(KERN_DEBUG, &pdev->dev,
269 "enabling SATA channels (0x%x)\n",
270 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271 tmp8 |= ALL_PORTS;
272 pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
273 }
274
275 /* make sure interrupts for each channel sent to us */
276 pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
277 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500278 dev_printk(KERN_DEBUG, &pdev->dev,
279 "enabling SATA channel interrupts (0x%x)\n",
280 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 tmp8 |= ALL_PORTS;
282 pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
283 }
284
285 /* make sure native mode is enabled */
286 pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
287 if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500288 dev_printk(KERN_DEBUG, &pdev->dev,
289 "enabling SATA channel native mode (0x%x)\n",
290 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 tmp8 |= NATIVE_MODE_ALL;
292 pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
293 }
294}
295
296static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
297{
298 static int printed_version;
299 unsigned int i;
300 int rc;
301 struct ata_probe_ent *probe_ent;
302 int board_id = (int) ent->driver_data;
303 const int *bar_sizes;
304 int pci_dev_busy = 0;
305 u8 tmp8;
306
307 if (!printed_version++)
Jeff Garzika9524a72005-10-30 14:39:11 -0500308 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
310 rc = pci_enable_device(pdev);
311 if (rc)
312 return rc;
313
314 rc = pci_request_regions(pdev, DRV_NAME);
315 if (rc) {
316 pci_dev_busy = 1;
317 goto err_out;
318 }
319
320 if (board_id == vt6420) {
321 pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
322 if (tmp8 & SATA_2DEV) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500323 dev_printk(KERN_ERR, &pdev->dev,
324 "SATA master/slave not supported (0x%x)\n",
325 (int) tmp8);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 rc = -EIO;
327 goto err_out_regions;
328 }
329
330 bar_sizes = &svia_bar_sizes[0];
331 } else {
332 bar_sizes = &vt6421_bar_sizes[0];
333 }
334
335 for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
336 if ((pci_resource_start(pdev, i) == 0) ||
337 (pci_resource_len(pdev, i) < bar_sizes[i])) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500338 dev_printk(KERN_ERR, &pdev->dev,
339 "invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
340 i,
341 pci_resource_start(pdev, i),
342 pci_resource_len(pdev, i));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 rc = -ENODEV;
344 goto err_out_regions;
345 }
346
347 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
348 if (rc)
349 goto err_out_regions;
350 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
351 if (rc)
352 goto err_out_regions;
353
354 if (board_id == vt6420)
355 probe_ent = vt6420_init_probe_ent(pdev);
356 else
357 probe_ent = vt6421_init_probe_ent(pdev);
Jeff Garzik8a60a072005-07-31 13:13:24 -0400358
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359 if (!probe_ent) {
Jeff Garzika9524a72005-10-30 14:39:11 -0500360 dev_printk(KERN_ERR, &pdev->dev, "out of memory\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361 rc = -ENOMEM;
362 goto err_out_regions;
363 }
364
365 svia_configure(pdev);
366
367 pci_set_master(pdev);
368
369 /* FIXME: check ata_device_add return value */
370 ata_device_add(probe_ent);
371 kfree(probe_ent);
372
373 return 0;
374
375err_out_regions:
376 pci_release_regions(pdev);
377err_out:
378 if (!pci_dev_busy)
379 pci_disable_device(pdev);
380 return rc;
381}
382
383static int __init svia_init(void)
384{
385 return pci_module_init(&svia_pci_driver);
386}
387
388static void __exit svia_exit(void)
389{
390 pci_unregister_driver(&svia_pci_driver);
391}
392
393module_init(svia_init);
394module_exit(svia_exit);
395