?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
radix-tree: fix small lockless radix-tree bug
[linux-2.6/pdupreez.git] / drivers / ata / sata_sil.c
blob88bf4212590f06f9f3f762894b226e012e9f2b18
1 /*
2 * sata_sil.c - Silicon Image SATA
3 *
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
6 * on emails.
7 *
8 * Copyright 2003-2005 Red Hat, Inc.
9 * Copyright 2003 Benjamin Herrenschmidt
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 * Documentation for SiI 3112:
31 * http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2
32 *
33 * Other errata and documentation available under NDA.
34 *
35 */
36
37 #include <linux/kernel.h>
38 #include <linux/module.h>
39 #include <linux/pci.h>
40 #include <linux/init.h>
41 #include <linux/blkdev.h>
42 #include <linux/delay.h>
43 #include <linux/interrupt.h>
44 #include <linux/device.h>
45 #include <scsi/scsi_host.h>
46 #include <linux/libata.h>
47
48 #define DRV_NAME "sata_sil"
49 #define DRV_VERSION "2.3"
50
51 enum {
52 SIL_MMIO_BAR = 5,
53
54 /*
55 * host flags
56 */
57 SIL_FLAG_NO_SATA_IRQ = (1 << 28),
58 SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
59 SIL_FLAG_MOD15WRITE = (1 << 30),
60
61 SIL_DFL_PORT_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
62 ATA_FLAG_MMIO,
63
64 /*
65 * Controller IDs
66 */
67 sil_3112 = 0,
68 sil_3112_no_sata_irq = 1,
69 sil_3512 = 2,
70 sil_3114 = 3,
71
72 /*
73 * Register offsets
74 */
75 SIL_SYSCFG = 0x48,
76
77 /*
78 * Register bits
79 */
80 /* SYSCFG */
81 SIL_MASK_IDE0_INT = (1 << 22),
82 SIL_MASK_IDE1_INT = (1 << 23),
83 SIL_MASK_IDE2_INT = (1 << 24),
84 SIL_MASK_IDE3_INT = (1 << 25),
85 SIL_MASK_2PORT = SIL_MASK_IDE0_INT | SIL_MASK_IDE1_INT,
86 SIL_MASK_4PORT = SIL_MASK_2PORT |
87 SIL_MASK_IDE2_INT | SIL_MASK_IDE3_INT,
88
89 /* BMDMA/BMDMA2 */
90 SIL_INTR_STEERING = (1 << 1),
91
92 SIL_DMA_ENABLE = (1 << 0), /* DMA run switch */
93 SIL_DMA_RDWR = (1 << 3), /* DMA Rd-Wr */
94 SIL_DMA_SATA_IRQ = (1 << 4), /* OR of all SATA IRQs */
95 SIL_DMA_ACTIVE = (1 << 16), /* DMA running */
96 SIL_DMA_ERROR = (1 << 17), /* PCI bus error */
97 SIL_DMA_COMPLETE = (1 << 18), /* cmd complete / IRQ pending */
98 SIL_DMA_N_SATA_IRQ = (1 << 6), /* SATA_IRQ for the next channel */
99 SIL_DMA_N_ACTIVE = (1 << 24), /* ACTIVE for the next channel */
100 SIL_DMA_N_ERROR = (1 << 25), /* ERROR for the next channel */
101 SIL_DMA_N_COMPLETE = (1 << 26), /* COMPLETE for the next channel */
102
103 /* SIEN */
104 SIL_SIEN_N = (1 << 16), /* triggered by SError.N */
105
106 /*
107 * Others
108 */
109 SIL_QUIRK_MOD15WRITE = (1 << 0),
110 SIL_QUIRK_UDMA5MAX = (1 << 1),
111 };
112
113 static int sil_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
114 #ifdef CONFIG_PM
115 static int sil_pci_device_resume(struct pci_dev *pdev);
116 #endif
117 static void sil_dev_config(struct ata_device *dev);
118 static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
119 static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
120 static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed);
121 static void sil_freeze(struct ata_port *ap);
122 static void sil_thaw(struct ata_port *ap);
123
124
125 static const struct pci_device_id sil_pci_tbl[] = {
126 { PCI_VDEVICE(CMD, 0x3112), sil_3112 },
127 { PCI_VDEVICE(CMD, 0x0240), sil_3112 },
128 { PCI_VDEVICE(CMD, 0x3512), sil_3512 },
129 { PCI_VDEVICE(CMD, 0x3114), sil_3114 },
130 { PCI_VDEVICE(ATI, 0x436e), sil_3112 },
131 { PCI_VDEVICE(ATI, 0x4379), sil_3112_no_sata_irq },
132 { PCI_VDEVICE(ATI, 0x437a), sil_3112_no_sata_irq },
133
134 { } /* terminate list */
135 };
136
137
138 /* TODO firmware versions should be added - eric */
139 static const struct sil_drivelist {
140 const char *product;
141 unsigned int quirk;
142 } sil_blacklist [] = {
143 { "ST320012AS", SIL_QUIRK_MOD15WRITE },
144 { "ST330013AS", SIL_QUIRK_MOD15WRITE },
145 { "ST340017AS", SIL_QUIRK_MOD15WRITE },
146 { "ST360015AS", SIL_QUIRK_MOD15WRITE },
147 { "ST380023AS", SIL_QUIRK_MOD15WRITE },
148 { "ST3120023AS", SIL_QUIRK_MOD15WRITE },
149 { "ST340014ASL", SIL_QUIRK_MOD15WRITE },
150 { "ST360014ASL", SIL_QUIRK_MOD15WRITE },
151 { "ST380011ASL", SIL_QUIRK_MOD15WRITE },
152 { "ST3120022ASL", SIL_QUIRK_MOD15WRITE },
153 { "ST3160021ASL", SIL_QUIRK_MOD15WRITE },
154 { "Maxtor 4D060H3", SIL_QUIRK_UDMA5MAX },
155 { }
156 };
157
158 static struct pci_driver sil_pci_driver = {
159 .name = DRV_NAME,
160 .id_table = sil_pci_tbl,
161 .probe = sil_init_one,
162 .remove = ata_pci_remove_one,
163 #ifdef CONFIG_PM
164 .suspend = ata_pci_device_suspend,
165 .resume = sil_pci_device_resume,
166 #endif
167 };
168
169 static struct scsi_host_template sil_sht = {
170 ATA_BMDMA_SHT(DRV_NAME),
171 };
172
173 static struct ata_port_operations sil_ops = {
174 .inherits = &ata_bmdma_port_ops,
175 .dev_config = sil_dev_config,
176 .set_mode = sil_set_mode,
177 .freeze = sil_freeze,
178 .thaw = sil_thaw,
179 .scr_read = sil_scr_read,
180 .scr_write = sil_scr_write,
181 };
182
183 static const struct ata_port_info sil_port_info[] = {
184 /* sil_3112 */
185 {
186 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_MOD15WRITE,
187 .pio_mask = 0x1f, /* pio0-4 */
188 .mwdma_mask = 0x07, /* mwdma0-2 */
189 .udma_mask = ATA_UDMA5,
190 .port_ops = &sil_ops,
191 },
192 /* sil_3112_no_sata_irq */
193 {
194 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_MOD15WRITE |
195 SIL_FLAG_NO_SATA_IRQ,
196 .pio_mask = 0x1f, /* pio0-4 */
197 .mwdma_mask = 0x07, /* mwdma0-2 */
198 .udma_mask = ATA_UDMA5,
199 .port_ops = &sil_ops,
200 },
201 /* sil_3512 */
202 {
203 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
204 .pio_mask = 0x1f, /* pio0-4 */
205 .mwdma_mask = 0x07, /* mwdma0-2 */
206 .udma_mask = ATA_UDMA5,
207 .port_ops = &sil_ops,
208 },
209 /* sil_3114 */
210 {
211 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
212 .pio_mask = 0x1f, /* pio0-4 */
213 .mwdma_mask = 0x07, /* mwdma0-2 */
214 .udma_mask = ATA_UDMA5,
215 .port_ops = &sil_ops,
216 },
217 };
218
219 /* per-port register offsets */
220 /* TODO: we can probably calculate rather than use a table */
221 static const struct {
222 unsigned long tf; /* ATA taskfile register block */
223 unsigned long ctl; /* ATA control/altstatus register block */
224 unsigned long bmdma; /* DMA register block */
225 unsigned long bmdma2; /* DMA register block #2 */
226 unsigned long fifo_cfg; /* FIFO Valid Byte Count and Control */
227 unsigned long scr; /* SATA control register block */
228 unsigned long sien; /* SATA Interrupt Enable register */
229 unsigned long xfer_mode;/* data transfer mode register */
230 unsigned long sfis_cfg; /* SATA FIS reception config register */
231 } sil_port[] = {
232 /* port 0 ... */
233 /* tf ctl bmdma bmdma2 fifo scr sien mode sfis */
234 { 0x80, 0x8A, 0x0, 0x10, 0x40, 0x100, 0x148, 0xb4, 0x14c },
235 { 0xC0, 0xCA, 0x8, 0x18, 0x44, 0x180, 0x1c8, 0xf4, 0x1cc },
236 { 0x280, 0x28A, 0x200, 0x210, 0x240, 0x300, 0x348, 0x2b4, 0x34c },
237 { 0x2C0, 0x2CA, 0x208, 0x218, 0x244, 0x380, 0x3c8, 0x2f4, 0x3cc },
238 /* ... port 3 */
239 };
240
241 MODULE_AUTHOR("Jeff Garzik");
242 MODULE_DESCRIPTION("low-level driver for Silicon Image SATA controller");
243 MODULE_LICENSE("GPL");
244 MODULE_DEVICE_TABLE(pci, sil_pci_tbl);
245 MODULE_VERSION(DRV_VERSION);
246
247 static int slow_down;
248 module_param(slow_down, int, 0444);
249 MODULE_PARM_DESC(slow_down, "Sledgehammer used to work around random problems, by limiting commands to 15 sectors (0=off, 1=on)");
250
251
252 static unsigned char sil_get_device_cache_line(struct pci_dev *pdev)
253 {
254 u8 cache_line = 0;
255 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line);
256 return cache_line;
257 }
258
259 /**
260 * sil_set_mode - wrap set_mode functions
261 * @link: link to set up
262 * @r_failed: returned device when we fail
263 *
264 * Wrap the libata method for device setup as after the setup we need
265 * to inspect the results and do some configuration work
266 */
267
268 static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed)
269 {
270 struct ata_port *ap = link->ap;
271 void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
272 void __iomem *addr = mmio_base + sil_port[ap->port_no].xfer_mode;
273 struct ata_device *dev;
274 u32 tmp, dev_mode[2] = { };
275 int rc;
276
277 rc = ata_do_set_mode(link, r_failed);
278 if (rc)
279 return rc;
280
281 ata_link_for_each_dev(dev, link) {
282 if (!ata_dev_enabled(dev))
283 dev_mode[dev->devno] = 0; /* PIO0/1/2 */
284 else if (dev->flags & ATA_DFLAG_PIO)
285 dev_mode[dev->devno] = 1; /* PIO3/4 */
286 else
287 dev_mode[dev->devno] = 3; /* UDMA */
288 /* value 2 indicates MDMA */
289 }
290
291 tmp = readl(addr);
292 tmp &= ~((1<<5) | (1<<4) | (1<<1) | (1<<0));
293 tmp |= dev_mode[0];
294 tmp |= (dev_mode[1] << 4);
295 writel(tmp, addr);
296 readl(addr); /* flush */
297 return 0;
298 }
299
300 static inline void __iomem *sil_scr_addr(struct ata_port *ap,
301 unsigned int sc_reg)
302 {
303 void __iomem *offset = ap->ioaddr.scr_addr;
304
305 switch (sc_reg) {
306 case SCR_STATUS:
307 return offset + 4;
308 case SCR_ERROR:
309 return offset + 8;
310 case SCR_CONTROL:
311 return offset;
312 default:
313 /* do nothing */
314 break;
315 }
316
317 return NULL;
318 }
319
320 static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
321 {
322 void __iomem *mmio = sil_scr_addr(ap, sc_reg);
323
324 if (mmio) {
325 *val = readl(mmio);
326 return 0;
327 }
328 return -EINVAL;
329 }
330
331 static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
332 {
333 void __iomem *mmio = sil_scr_addr(ap, sc_reg);
334
335 if (mmio) {
336 writel(val, mmio);
337 return 0;
338 }
339 return -EINVAL;
340 }
341
342 static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
343 {
344 struct ata_eh_info *ehi = &ap->link.eh_info;
345 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
346 u8 status;
347
348 if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
349 u32 serror;
350
351 /* SIEN doesn't mask SATA IRQs on some 3112s. Those
352 * controllers continue to assert IRQ as long as
353 * SError bits are pending. Clear SError immediately.
354 */
355 sil_scr_read(ap, SCR_ERROR, &serror);
356 sil_scr_write(ap, SCR_ERROR, serror);
357
358 /* Sometimes spurious interrupts occur, double check
359 * it's PHYRDY CHG.
360 */
361 if (serror & SERR_PHYRDY_CHG) {
362 ap->link.eh_info.serror |= serror;
363 goto freeze;
364 }
365
366 if (!(bmdma2 & SIL_DMA_COMPLETE))
367 return;
368 }
369
370 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
371 /* this sometimes happens, just clear IRQ */
372 ap->ops->sff_check_status(ap);
373 return;
374 }
375
376 /* Check whether we are expecting interrupt in this state */
377 switch (ap->hsm_task_state) {
378 case HSM_ST_FIRST:
379 /* Some pre-ATAPI-4 devices assert INTRQ
380 * at this state when ready to receive CDB.
381 */
382
383 /* Check the ATA_DFLAG_CDB_INTR flag is enough here.
384 * The flag was turned on only for atapi devices. No
385 * need to check ata_is_atapi(qc->tf.protocol) again.
386 */
387 if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
388 goto err_hsm;
389 break;
390 case HSM_ST_LAST:
391 if (ata_is_dma(qc->tf.protocol)) {
392 /* clear DMA-Start bit */
393 ap->ops->bmdma_stop(qc);
394
395 if (bmdma2 & SIL_DMA_ERROR) {
396 qc->err_mask |= AC_ERR_HOST_BUS;
397 ap->hsm_task_state = HSM_ST_ERR;
398 }
399 }
400 break;
401 case HSM_ST:
402 break;
403 default:
404 goto err_hsm;
405 }
406
407 /* check main status, clearing INTRQ */
408 status = ap->ops->sff_check_status(ap);
409 if (unlikely(status & ATA_BUSY))
410 goto err_hsm;
411
412 /* ack bmdma irq events */
413 ata_sff_irq_clear(ap);
414
415 /* kick HSM in the ass */
416 ata_sff_hsm_move(ap, qc, status, 0);
417
418 if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol))
419 ata_ehi_push_desc(ehi, "BMDMA2 stat 0x%x", bmdma2);
420
421 return;
422
423 err_hsm:
424 qc->err_mask |= AC_ERR_HSM;
425 freeze:
426 ata_port_freeze(ap);
427 }
428
429 static irqreturn_t sil_interrupt(int irq, void *dev_instance)
430 {
431 struct ata_host *host = dev_instance;
432 void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
433 int handled = 0;
434 int i;
435
436 spin_lock(&host->lock);
437
438 for (i = 0; i < host->n_ports; i++) {
439 struct ata_port *ap = host->ports[i];
440 u32 bmdma2 = readl(mmio_base + sil_port[ap->port_no].bmdma2);
441
442 if (unlikely(!ap || ap->flags & ATA_FLAG_DISABLED))
443 continue;
444
445 /* turn off SATA_IRQ if not supported */
446 if (ap->flags & SIL_FLAG_NO_SATA_IRQ)
447 bmdma2 &= ~SIL_DMA_SATA_IRQ;
448
449 if (bmdma2 == 0xffffffff ||
450 !(bmdma2 & (SIL_DMA_COMPLETE | SIL_DMA_SATA_IRQ)))
451 continue;
452
453 sil_host_intr(ap, bmdma2);
454 handled = 1;
455 }
456
457 spin_unlock(&host->lock);
458
459 return IRQ_RETVAL(handled);
460 }
461
462 static void sil_freeze(struct ata_port *ap)
463 {
464 void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
465 u32 tmp;
466
467 /* global IRQ mask doesn't block SATA IRQ, turn off explicitly */
468 writel(0, mmio_base + sil_port[ap->port_no].sien);
469
470 /* plug IRQ */
471 tmp = readl(mmio_base + SIL_SYSCFG);
472 tmp |= SIL_MASK_IDE0_INT << ap->port_no;
473 writel(tmp, mmio_base + SIL_SYSCFG);
474 readl(mmio_base + SIL_SYSCFG); /* flush */
475 }
476
477 static void sil_thaw(struct ata_port *ap)
478 {
479 void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
480 u32 tmp;
481
482 /* clear IRQ */
483 ap->ops->sff_check_status(ap);
484 ata_sff_irq_clear(ap);
485
486 /* turn on SATA IRQ if supported */
487 if (!(ap->flags & SIL_FLAG_NO_SATA_IRQ))
488 writel(SIL_SIEN_N, mmio_base + sil_port[ap->port_no].sien);
489
490 /* turn on IRQ */
491 tmp = readl(mmio_base + SIL_SYSCFG);
492 tmp &= ~(SIL_MASK_IDE0_INT << ap->port_no);
493 writel(tmp, mmio_base + SIL_SYSCFG);
494 }
495
496 /**
497 * sil_dev_config - Apply device/host-specific errata fixups
498 * @dev: Device to be examined
499 *
500 * After the IDENTIFY [PACKET] DEVICE step is complete, and a
501 * device is known to be present, this function is called.
502 * We apply two errata fixups which are specific to Silicon Image,
503 * a Seagate and a Maxtor fixup.
504 *
505 * For certain Seagate devices, we must limit the maximum sectors
506 * to under 8K.
507 *
508 * For certain Maxtor devices, we must not program the drive
509 * beyond udma5.
510 *
511 * Both fixups are unfairly pessimistic. As soon as I get more
512 * information on these errata, I will create a more exhaustive
513 * list, and apply the fixups to only the specific
514 * devices/hosts/firmwares that need it.
515 *
516 * 20040111 - Seagate drives affected by the Mod15Write bug are blacklisted
517 * The Maxtor quirk is in the blacklist, but I'm keeping the original
518 * pessimistic fix for the following reasons...
519 * - There seems to be less info on it, only one device gleaned off the
520 * Windows driver, maybe only one is affected. More info would be greatly
521 * appreciated.
522 * - But then again UDMA5 is hardly anything to complain about
523 */
524 static void sil_dev_config(struct ata_device *dev)
525 {
526 struct ata_port *ap = dev->link->ap;
527 int print_info = ap->link.eh_context.i.flags & ATA_EHI_PRINTINFO;
528 unsigned int n, quirks = 0;
529 unsigned char model_num[ATA_ID_PROD_LEN + 1];
530
531 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
532
533 for (n = 0; sil_blacklist[n].product; n++)
534 if (!strcmp(sil_blacklist[n].product, model_num)) {
535 quirks = sil_blacklist[n].quirk;
536 break;
537 }
538
539 /* limit requests to 15 sectors */
540 if (slow_down ||
541 ((ap->flags & SIL_FLAG_MOD15WRITE) &&
542 (quirks & SIL_QUIRK_MOD15WRITE))) {
543 if (print_info)
544 ata_dev_printk(dev, KERN_INFO, "applying Seagate "
545 "errata fix (mod15write workaround)\n");
546 dev->max_sectors = 15;
547 return;
548 }
549
550 /* limit to udma5 */
551 if (quirks & SIL_QUIRK_UDMA5MAX) {
552 if (print_info)
553 ata_dev_printk(dev, KERN_INFO, "applying Maxtor "
554 "errata fix %s\n", model_num);
555 dev->udma_mask &= ATA_UDMA5;
556 return;
557 }
558 }
559
560 static void sil_init_controller(struct ata_host *host)
561 {
562 struct pci_dev *pdev = to_pci_dev(host->dev);
563 void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
564 u8 cls;
565 u32 tmp;
566 int i;
567
568 /* Initialize FIFO PCI bus arbitration */
569 cls = sil_get_device_cache_line(pdev);
570 if (cls) {
571 cls >>= 3;
572 cls++; /* cls = (line_size/8)+1 */
573 for (i = 0; i < host->n_ports; i++)
574 writew(cls << 8 | cls,
575 mmio_base + sil_port[i].fifo_cfg);
576 } else
577 dev_printk(KERN_WARNING, &pdev->dev,
578 "cache line size not set. Driver may not function\n");
579
580 /* Apply R_ERR on DMA activate FIS errata workaround */
581 if (host->ports[0]->flags & SIL_FLAG_RERR_ON_DMA_ACT) {
582 int cnt;
583
584 for (i = 0, cnt = 0; i < host->n_ports; i++) {
585 tmp = readl(mmio_base + sil_port[i].sfis_cfg);
586 if ((tmp & 0x3) != 0x01)
587 continue;
588 if (!cnt)
589 dev_printk(KERN_INFO, &pdev->dev,
590 "Applying R_ERR on DMA activate "
591 "FIS errata fix\n");
592 writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
593 cnt++;
594 }
595 }
596
597 if (host->n_ports == 4) {
598 /* flip the magic "make 4 ports work" bit */
599 tmp = readl(mmio_base + sil_port[2].bmdma);
600 if ((tmp & SIL_INTR_STEERING) == 0)
601 writel(tmp | SIL_INTR_STEERING,
602 mmio_base + sil_port[2].bmdma);
603 }
604 }
605
606 static int sil_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
607 {
608 static int printed_version;
609 int board_id = ent->driver_data;
610 const struct ata_port_info *ppi[] = { &sil_port_info[board_id], NULL };
611 struct ata_host *host;
612 void __iomem *mmio_base;
613 int n_ports, rc;
614 unsigned int i;
615
616 if (!printed_version++)
617 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
618
619 /* allocate host */
620 n_ports = 2;
621 if (board_id == sil_3114)
622 n_ports = 4;
623
624 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
625 if (!host)
626 return -ENOMEM;
627
628 /* acquire resources and fill host */
629 rc = pcim_enable_device(pdev);
630 if (rc)
631 return rc;
632
633 rc = pcim_iomap_regions(pdev, 1 << SIL_MMIO_BAR, DRV_NAME);
634 if (rc == -EBUSY)
635 pcim_pin_device(pdev);
636 if (rc)
637 return rc;
638 host->iomap = pcim_iomap_table(pdev);
639
640 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
641 if (rc)
642 return rc;
643 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
644 if (rc)
645 return rc;
646
647 mmio_base = host->iomap[SIL_MMIO_BAR];
648
649 for (i = 0; i < host->n_ports; i++) {
650 struct ata_port *ap = host->ports[i];
651 struct ata_ioports *ioaddr = &ap->ioaddr;
652
653 ioaddr->cmd_addr = mmio_base + sil_port[i].tf;
654 ioaddr->altstatus_addr =
655 ioaddr->ctl_addr = mmio_base + sil_port[i].ctl;
656 ioaddr->bmdma_addr = mmio_base + sil_port[i].bmdma;
657 ioaddr->scr_addr = mmio_base + sil_port[i].scr;
658 ata_sff_std_ports(ioaddr);
659
660 ata_port_pbar_desc(ap, SIL_MMIO_BAR, -1, "mmio");
661 ata_port_pbar_desc(ap, SIL_MMIO_BAR, sil_port[i].tf, "tf");
662 }
663
664 /* initialize and activate */
665 sil_init_controller(host);
666
667 pci_set_master(pdev);
668 return ata_host_activate(host, pdev->irq, sil_interrupt, IRQF_SHARED,
669 &sil_sht);
670 }
671
672 #ifdef CONFIG_PM
673 static int sil_pci_device_resume(struct pci_dev *pdev)
674 {
675 struct ata_host *host = dev_get_drvdata(&pdev->dev);
676 int rc;
677
678 rc = ata_pci_device_do_resume(pdev);
679 if (rc)
680 return rc;
681
682 sil_init_controller(host);
683 ata_host_resume(host);
684
685 return 0;
686 }
687 #endif
688
689 static int __init sil_init(void)
690 {
691 return pci_register_driver(&sil_pci_driver);
692 }
693
694 static void __exit sil_exit(void)
695 {
696 pci_unregister_driver(&sil_pci_driver);
697 }
698
699
700 module_init(sil_init);
701 module_exit(sil_exit);
Linux branches of Pieter du Preez