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[PATCH] orinoco: bump version to 0.15
[linux-2.6/sactl.git] / drivers / scsi / sata_via.c
blob9e7ae4e0db324535b3f34fbe648173abe7dd83de
1 /*
2 * 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
6 on emails.
7 *
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 *
36 */
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>
44 #include <linux/device.h>
45 #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
52 enum board_ids_enum {
53 vt6420,
54 vt6421,
55 };
56
57 enum {
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
74 static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
75 static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg);
76 static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
77
78 static const 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
85 static 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
92 static struct scsi_host_template svia_sht = {
93 .module = THIS_MODULE,
94 .name = DRV_NAME,
95 .ioctl = ata_scsi_ioctl,
96 .queuecommand = ata_scsi_queuecmd,
97 .can_queue = ATA_DEF_QUEUE,
98 .this_id = ATA_SHT_THIS_ID,
99 .sg_tablesize = LIBATA_MAX_PRD,
100 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
101 .emulated = ATA_SHT_EMULATED,
102 .use_clustering = ATA_SHT_USE_CLUSTERING,
103 .proc_name = DRV_NAME,
104 .dma_boundary = ATA_DMA_BOUNDARY,
105 .slave_configure = ata_scsi_slave_config,
106 .bios_param = ata_std_bios_param,
107 };
108
109 static const struct ata_port_operations svia_sata_ops = {
110 .port_disable = ata_port_disable,
111
112 .tf_load = ata_tf_load,
113 .tf_read = ata_tf_read,
114 .check_status = ata_check_status,
115 .exec_command = ata_exec_command,
116 .dev_select = ata_std_dev_select,
117
118 .phy_reset = sata_phy_reset,
119
120 .bmdma_setup = ata_bmdma_setup,
121 .bmdma_start = ata_bmdma_start,
122 .bmdma_stop = ata_bmdma_stop,
123 .bmdma_status = ata_bmdma_status,
124
125 .qc_prep = ata_qc_prep,
126 .qc_issue = ata_qc_issue_prot,
127
128 .eng_timeout = ata_eng_timeout,
129
130 .irq_handler = ata_interrupt,
131 .irq_clear = ata_bmdma_irq_clear,
132
133 .scr_read = svia_scr_read,
134 .scr_write = svia_scr_write,
135
136 .port_start = ata_port_start,
137 .port_stop = ata_port_stop,
138 .host_stop = ata_host_stop,
139 };
140
141 static struct ata_port_info svia_port_info = {
142 .sht = &svia_sht,
143 .host_flags = ATA_FLAG_SATA | ATA_FLAG_SRST | ATA_FLAG_NO_LEGACY,
144 .pio_mask = 0x1f,
145 .mwdma_mask = 0x07,
146 .udma_mask = 0x7f,
147 .port_ops = &svia_sata_ops,
148 };
149
150 MODULE_AUTHOR("Jeff Garzik");
151 MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers");
152 MODULE_LICENSE("GPL");
153 MODULE_DEVICE_TABLE(pci, svia_pci_tbl);
154 MODULE_VERSION(DRV_VERSION);
155
156 static u32 svia_scr_read (struct ata_port *ap, unsigned int sc_reg)
157 {
158 if (sc_reg > SCR_CONTROL)
159 return 0xffffffffU;
160 return inl(ap->ioaddr.scr_addr + (4 * sc_reg));
161 }
162
163 static void svia_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
164 {
165 if (sc_reg > SCR_CONTROL)
166 return;
167 outl(val, ap->ioaddr.scr_addr + (4 * sc_reg));
168 }
169
170 static const unsigned int svia_bar_sizes[] = {
171 8, 4, 8, 4, 16, 256
172 };
173
174 static const unsigned int vt6421_bar_sizes[] = {
175 16, 16, 16, 16, 32, 128
176 };
177
178 static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
179 {
180 return addr + (port * 128);
181 }
182
183 static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
184 {
185 return addr + (port * 64);
186 }
187
188 static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
189 struct pci_dev *pdev,
190 unsigned int port)
191 {
192 unsigned long reg_addr = pci_resource_start(pdev, port);
193 unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
194 unsigned long scr_addr;
195
196 probe_ent->port[port].cmd_addr = reg_addr;
197 probe_ent->port[port].altstatus_addr =
198 probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
199 probe_ent->port[port].bmdma_addr = bmdma_addr;
200
201 scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
202 probe_ent->port[port].scr_addr = scr_addr;
203
204 ata_std_ports(&probe_ent->port[port]);
205 }
206
207 static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
208 {
209 struct ata_probe_ent *probe_ent;
210 struct ata_port_info *ppi = &svia_port_info;
211
212 probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY);
213 if (!probe_ent)
214 return NULL;
215
216 probe_ent->port[0].scr_addr =
217 svia_scr_addr(pci_resource_start(pdev, 5), 0);
218 probe_ent->port[1].scr_addr =
219 svia_scr_addr(pci_resource_start(pdev, 5), 1);
220
221 return probe_ent;
222 }
223
224 static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
225 {
226 struct ata_probe_ent *probe_ent;
227 unsigned int i;
228
229 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
230 if (!probe_ent)
231 return NULL;
232
233 memset(probe_ent, 0, sizeof(*probe_ent));
234 probe_ent->dev = pci_dev_to_dev(pdev);
235 INIT_LIST_HEAD(&probe_ent->node);
236
237 probe_ent->sht = &svia_sht;
238 probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
239 ATA_FLAG_NO_LEGACY;
240 probe_ent->port_ops = &svia_sata_ops;
241 probe_ent->n_ports = N_PORTS;
242 probe_ent->irq = pdev->irq;
243 probe_ent->irq_flags = SA_SHIRQ;
244 probe_ent->pio_mask = 0x1f;
245 probe_ent->mwdma_mask = 0x07;
246 probe_ent->udma_mask = 0x7f;
247
248 for (i = 0; i < N_PORTS; i++)
249 vt6421_init_addrs(probe_ent, pdev, i);
250
251 return probe_ent;
252 }
253
254 static void svia_configure(struct pci_dev *pdev)
255 {
256 u8 tmp8;
257
258 pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8);
259 dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n",
260 (int) (tmp8 & 0xf0) == 0xf0 ? 0 : tmp8 & 0x0f);
261
262 /* make sure SATA channels are enabled */
263 pci_read_config_byte(pdev, SATA_CHAN_ENAB, &tmp8);
264 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
265 dev_printk(KERN_DEBUG, &pdev->dev,
266 "enabling SATA channels (0x%x)\n",
267 (int) tmp8);
268 tmp8 |= ALL_PORTS;
269 pci_write_config_byte(pdev, SATA_CHAN_ENAB, tmp8);
270 }
271
272 /* make sure interrupts for each channel sent to us */
273 pci_read_config_byte(pdev, SATA_INT_GATE, &tmp8);
274 if ((tmp8 & ALL_PORTS) != ALL_PORTS) {
275 dev_printk(KERN_DEBUG, &pdev->dev,
276 "enabling SATA channel interrupts (0x%x)\n",
277 (int) tmp8);
278 tmp8 |= ALL_PORTS;
279 pci_write_config_byte(pdev, SATA_INT_GATE, tmp8);
280 }
281
282 /* make sure native mode is enabled */
283 pci_read_config_byte(pdev, SATA_NATIVE_MODE, &tmp8);
284 if ((tmp8 & NATIVE_MODE_ALL) != NATIVE_MODE_ALL) {
285 dev_printk(KERN_DEBUG, &pdev->dev,
286 "enabling SATA channel native mode (0x%x)\n",
287 (int) tmp8);
288 tmp8 |= NATIVE_MODE_ALL;
289 pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8);
290 }
291 }
292
293 static int svia_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
294 {
295 static int printed_version;
296 unsigned int i;
297 int rc;
298 struct ata_probe_ent *probe_ent;
299 int board_id = (int) ent->driver_data;
300 const int *bar_sizes;
301 int pci_dev_busy = 0;
302 u8 tmp8;
303
304 if (!printed_version++)
305 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
306
307 rc = pci_enable_device(pdev);
308 if (rc)
309 return rc;
310
311 rc = pci_request_regions(pdev, DRV_NAME);
312 if (rc) {
313 pci_dev_busy = 1;
314 goto err_out;
315 }
316
317 if (board_id == vt6420) {
318 pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
319 if (tmp8 & SATA_2DEV) {
320 dev_printk(KERN_ERR, &pdev->dev,
321 "SATA master/slave not supported (0x%x)\n",
322 (int) tmp8);
323 rc = -EIO;
324 goto err_out_regions;
325 }
326
327 bar_sizes = &svia_bar_sizes[0];
328 } else {
329 bar_sizes = &vt6421_bar_sizes[0];
330 }
331
332 for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
333 if ((pci_resource_start(pdev, i) == 0) ||
334 (pci_resource_len(pdev, i) < bar_sizes[i])) {
335 dev_printk(KERN_ERR, &pdev->dev,
336 "invalid PCI BAR %u (sz 0x%lx, val 0x%lx)\n",
337 i,
338 pci_resource_start(pdev, i),
339 pci_resource_len(pdev, i));
340 rc = -ENODEV;
341 goto err_out_regions;
342 }
343
344 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
345 if (rc)
346 goto err_out_regions;
347 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
348 if (rc)
349 goto err_out_regions;
350
351 if (board_id == vt6420)
352 probe_ent = vt6420_init_probe_ent(pdev);
353 else
354 probe_ent = vt6421_init_probe_ent(pdev);
355
356 if (!probe_ent) {
357 dev_printk(KERN_ERR, &pdev->dev, "out of memory\n");
358 rc = -ENOMEM;
359 goto err_out_regions;
360 }
361
362 svia_configure(pdev);
363
364 pci_set_master(pdev);
365
366 /* FIXME: check ata_device_add return value */
367 ata_device_add(probe_ent);
368 kfree(probe_ent);
369
370 return 0;
371
372 err_out_regions:
373 pci_release_regions(pdev);
374 err_out:
375 if (!pci_dev_busy)
376 pci_disable_device(pdev);
377 return rc;
378 }
379
380 static int __init svia_init(void)
381 {
382 return pci_module_init(&svia_pci_driver);
383 }
384
385 static void __exit svia_exit(void)
386 {
387 pci_unregister_driver(&svia_pci_driver);
388 }
389
390 module_init(svia_init);
391 module_exit(svia_exit);
392
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