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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" | |
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 | ||
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, | |
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 | ||
057ace5e | 112 | static const struct ata_port_operations svia_sata_ops = { |
1da177e4 LT |
113 | .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, | |
aa8f0dc6 | 141 | .host_stop = ata_host_stop, |
1da177e4 LT |
142 | }; |
143 | ||
144 | static 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 | ||
153 | MODULE_AUTHOR("Jeff Garzik"); | |
154 | MODULE_DESCRIPTION("SCSI low-level driver for VIA SATA controllers"); | |
155 | MODULE_LICENSE("GPL"); | |
156 | MODULE_DEVICE_TABLE(pci, svia_pci_tbl); | |
157 | MODULE_VERSION(DRV_VERSION); | |
158 | ||
159 | static 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 | ||
166 | static 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 | ||
173 | static const unsigned int svia_bar_sizes[] = { | |
174 | 8, 4, 8, 4, 16, 256 | |
175 | }; | |
176 | ||
177 | static const unsigned int vt6421_bar_sizes[] = { | |
178 | 16, 16, 16, 16, 32, 128 | |
179 | }; | |
180 | ||
181 | static unsigned long svia_scr_addr(unsigned long addr, unsigned int port) | |
182 | { | |
183 | return addr + (port * 128); | |
184 | } | |
185 | ||
186 | static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port) | |
187 | { | |
188 | return addr + (port * 64); | |
189 | } | |
190 | ||
191 | static 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 | ||
210 | static 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 | ||
47a86593 | 215 | probe_ent = ata_pci_init_native_mode(pdev, &ppi, ATA_PORT_PRIMARY | ATA_PORT_SECONDARY); |
1da177e4 LT |
216 | 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 | ||
227 | static 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 | ||
257 | static void svia_configure(struct pci_dev *pdev) | |
258 | { | |
259 | u8 tmp8; | |
260 | ||
261 | pci_read_config_byte(pdev, PCI_INTERRUPT_LINE, &tmp8); | |
a9524a76 | 262 | dev_printk(KERN_INFO, &pdev->dev, "routed to hard irq line %d\n", |
1da177e4 LT |
263 | (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) { | |
a9524a76 JG |
268 | dev_printk(KERN_DEBUG, &pdev->dev, |
269 | "enabling SATA channels (0x%x)\n", | |
270 | (int) tmp8); | |
1da177e4 LT |
271 | 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) { | |
a9524a76 JG |
278 | dev_printk(KERN_DEBUG, &pdev->dev, |
279 | "enabling SATA channel interrupts (0x%x)\n", | |
280 | (int) tmp8); | |
1da177e4 LT |
281 | 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) { | |
a9524a76 JG |
288 | dev_printk(KERN_DEBUG, &pdev->dev, |
289 | "enabling SATA channel native mode (0x%x)\n", | |
290 | (int) tmp8); | |
1da177e4 LT |
291 | tmp8 |= NATIVE_MODE_ALL; |
292 | pci_write_config_byte(pdev, SATA_NATIVE_MODE, tmp8); | |
293 | } | |
294 | } | |
295 | ||
296 | static 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++) | |
a9524a76 | 308 | dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n"); |
1da177e4 LT |
309 | |
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) { | |
a9524a76 JG |
323 | dev_printk(KERN_ERR, &pdev->dev, |
324 | "SATA master/slave not supported (0x%x)\n", | |
325 | (int) tmp8); | |
1da177e4 LT |
326 | 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])) { | |
a9524a76 JG |
338 | 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)); | |
1da177e4 LT |
343 | 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); | |
8a60a071 | 358 | |
1da177e4 | 359 | if (!probe_ent) { |
a9524a76 | 360 | dev_printk(KERN_ERR, &pdev->dev, "out of memory\n"); |
1da177e4 LT |
361 | 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 | ||
375 | err_out_regions: | |
376 | pci_release_regions(pdev); | |
377 | err_out: | |
378 | if (!pci_dev_busy) | |
379 | pci_disable_device(pdev); | |
380 | return rc; | |
381 | } | |
382 | ||
383 | static int __init svia_init(void) | |
384 | { | |
385 | return pci_module_init(&svia_pci_driver); | |
386 | } | |
387 | ||
388 | static void __exit svia_exit(void) | |
389 | { | |
390 | pci_unregister_driver(&svia_pci_driver); | |
391 | } | |
392 | ||
393 | module_init(svia_init); | |
394 | module_exit(svia_exit); | |
395 |