Commit | Line | Data |
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1da177e4 | 1 | /* |
af36d7f0 JG |
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 | |
1da177e4 | 6 | on emails. |
af36d7f0 JG |
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 | * | |
1da177e4 LT |
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> | |
a9524a76 | 44 | #include <linux/device.h> |
1da177e4 LT |
45 | #include <scsi/scsi_host.h> |
46 | #include <linux/libata.h> | |
47 | #include <asm/io.h> | |
48 | ||
49 | #define DRV_NAME "sata_via" | |
af64371a | 50 | #define DRV_VERSION "1.2" |
1da177e4 LT |
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 | ||
3b7d697d | 78 | static const struct pci_device_id svia_pci_tbl[] = { |
1da177e4 LT |
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 | ||
193515d5 | 92 | static struct scsi_host_template svia_sht = { |
1da177e4 LT |
93 | .module = THIS_MODULE, |
94 | .name = DRV_NAME, | |
95 | .ioctl = ata_scsi_ioctl, | |
96 | .queuecommand = ata_scsi_queuecmd, | |
1da177e4 LT |
97 | .can_queue = ATA_DEF_QUEUE, |
98 | .this_id = ATA_SHT_THIS_ID, | |
99 | .sg_tablesize = LIBATA_MAX_PRD, | |
1da177e4 LT |
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, | |
1da177e4 LT |
107 | }; |
108 | ||
057ace5e | 109 | static const struct ata_port_operations svia_sata_ops = { |
1da177e4 LT |
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, | |
aa8f0dc6 | 138 | .host_stop = ata_host_stop, |
1da177e4 LT |
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 | ||
47a86593 | 212 | probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY); |
1da177e4 LT |
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); | |
a9524a76 | 259 | dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n", |
1da177e4 LT |
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) { | |
a9524a76 JG |
265 | dev_printk(KERN_DEBUG, &pdev->dev, |
266 | "enabling SATA channels (0x%x)\n", | |
267 | (int) tmp8); | |
1da177e4 LT |
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) { | |
a9524a76 JG |
275 | dev_printk(KERN_DEBUG, &pdev->dev, |
276 | "enabling SATA channel interrupts (0x%x)\n", | |
277 | (int) tmp8); | |
1da177e4 LT |
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) { | |
a9524a76 JG |
285 | dev_printk(KERN_DEBUG, &pdev->dev, |
286 | "enabling SATA channel native mode (0x%x)\n", | |
287 | (int) tmp8); | |
1da177e4 LT |
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++) | |
a9524a76 | 305 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 LT |
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) { | |
a9524a76 JG |
320 | dev_printk(KERN_ERR, &pdev->dev, |
321 | "SATA master/slave not supported (0x%x)\n", | |
322 | (int) tmp8); | |
1da177e4 LT |
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])) { | |
a9524a76 JG |
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)); | |
1da177e4 LT |
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); | |
8a60a071 | 355 | |
1da177e4 | 356 | if (!probe_ent) { |
a9524a76 | 357 | dev_printk(KERN_ERR, &pdev->dev, "out of memory\n"); |
1da177e4 LT |
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 |