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holepunch: fix mmap_sem i_mutex deadlock
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / ata / pata_serverworks.c
blob95f52020af7266736690a3609a9b212ee31191ae
1 /*
2 * ata-serverworks.c - Serverworks PATA for new ATA layer
3 * (C) 2005 Red Hat Inc
4 * Alan Cox <alan@redhat.com>
5 *
6 * based upon
7 *
8 * serverworks.c
9 *
10 * Copyright (C) 1998-2000 Michel Aubry
11 * Copyright (C) 1998-2000 Andrzej Krzysztofowicz
12 * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org>
13 * Portions copyright (c) 2001 Sun Microsystems
14 *
15 *
16 * RCC/ServerWorks IDE driver for Linux
17 *
18 * OSB4: `Open South Bridge' IDE Interface (fn 1)
19 * supports UDMA mode 2 (33 MB/s)
20 *
21 * CSB5: `Champion South Bridge' IDE Interface (fn 1)
22 * all revisions support UDMA mode 4 (66 MB/s)
23 * revision A2.0 and up support UDMA mode 5 (100 MB/s)
24 *
25 * *** The CSB5 does not provide ANY register ***
26 * *** to detect 80-conductor cable presence. ***
27 *
28 * CSB6: `Champion South Bridge' IDE Interface (optional: third channel)
29 *
30 * Documentation:
31 * Available under NDA only. Errata info very hard to get.
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/pci.h>
37 #include <linux/init.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <scsi/scsi_host.h>
41 #include <linux/libata.h>
42
43 #define DRV_NAME "pata_serverworks"
44 #define DRV_VERSION "0.3.9"
45
46 #define SVWKS_CSB5_REVISION_NEW 0x92 /* min PCI_REVISION_ID for UDMA5 (A2.0) */
47 #define SVWKS_CSB6_REVISION 0xa0 /* min PCI_REVISION_ID for UDMA4 (A1.0) */
48
49 /* Seagate Barracuda ATA IV Family drives in UDMA mode 5
50 * can overrun their FIFOs when used with the CSB5 */
51
52 static const char *csb_bad_ata100[] = {
53 "ST320011A",
54 "ST340016A",
55 "ST360021A",
56 "ST380021A",
57 NULL
58 };
59
60 /**
61 * dell_cable - Dell serverworks cable detection
62 * @ap: ATA port to do cable detect
63 *
64 * Dell hide the 40/80 pin select for their interfaces in the top two
65 * bits of the subsystem ID.
66 */
67
68 static int dell_cable(struct ata_port *ap) {
69 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
70
71 if (pdev->subsystem_device & (1 << (ap->port_no + 14)))
72 return ATA_CBL_PATA80;
73 return ATA_CBL_PATA40;
74 }
75
76 /**
77 * sun_cable - Sun Cobalt 'Alpine' cable detection
78 * @ap: ATA port to do cable select
79 *
80 * Cobalt CSB5 IDE hides the 40/80pin in the top two bits of the
81 * subsystem ID the same as dell. We could use one function but we may
82 * need to extend the Dell one in future
83 */
84
85 static int sun_cable(struct ata_port *ap) {
86 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
87
88 if (pdev->subsystem_device & (1 << (ap->port_no + 14)))
89 return ATA_CBL_PATA80;
90 return ATA_CBL_PATA40;
91 }
92
93 /**
94 * osb4_cable - OSB4 cable detect
95 * @ap: ATA port to check
96 *
97 * The OSB4 isn't UDMA66 capable so this is easy
98 */
99
100 static int osb4_cable(struct ata_port *ap) {
101 return ATA_CBL_PATA40;
102 }
103
104 /**
105 * csb4_cable - CSB5/6 cable detect
106 * @ap: ATA port to check
107 *
108 * Serverworks default arrangement is to use the drive side detection
109 * only.
110 */
111
112 static int csb_cable(struct ata_port *ap) {
113 return ATA_CBL_PATA80;
114 }
115
116 struct sv_cable_table {
117 int device;
118 int subvendor;
119 int (*cable_detect)(struct ata_port *ap);
120 };
121
122 /*
123 * Note that we don't copy the old serverworks code because the old
124 * code contains obvious mistakes
125 */
126
127 static struct sv_cable_table cable_detect[] = {
128 { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_VENDOR_ID_DELL, dell_cable },
129 { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE, PCI_VENDOR_ID_DELL, dell_cable },
130 { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_VENDOR_ID_SUN, sun_cable },
131 { PCI_DEVICE_ID_SERVERWORKS_OSB4IDE, PCI_ANY_ID, osb4_cable },
132 { PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, PCI_ANY_ID, csb_cable },
133 { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE, PCI_ANY_ID, csb_cable },
134 { PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2, PCI_ANY_ID, csb_cable },
135 { PCI_DEVICE_ID_SERVERWORKS_HT1000IDE, PCI_ANY_ID, csb_cable },
136 { }
137 };
138
139 /**
140 * serverworks_pre_reset - cable detection
141 * @ap: ATA port
142 *
143 * Perform cable detection according to the device and subvendor
144 * identifications
145 */
146
147 static int serverworks_pre_reset(struct ata_port *ap) {
148 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
149 struct sv_cable_table *cb = cable_detect;
150
151 while(cb->device) {
152 if (cb->device == pdev->device &&
153 (cb->subvendor == pdev->subsystem_vendor ||
154 cb->subvendor == PCI_ANY_ID)) {
155 ap->cbl = cb->cable_detect(ap);
156 return ata_std_prereset(ap);
157 }
158 cb++;
159 }
160
161 BUG();
162 return -1; /* kill compiler warning */
163 }
164
165 static void serverworks_error_handler(struct ata_port *ap)
166 {
167 return ata_bmdma_drive_eh(ap, serverworks_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
168 }
169
170 /**
171 * serverworks_is_csb - Check for CSB or OSB
172 * @pdev: PCI device to check
173 *
174 * Returns true if the device being checked is known to be a CSB
175 * series device.
176 */
177
178 static u8 serverworks_is_csb(struct pci_dev *pdev)
179 {
180 switch (pdev->device) {
181 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE:
182 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE:
183 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2:
184 case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE:
185 return 1;
186 default:
187 break;
188 }
189 return 0;
190 }
191
192 /**
193 * serverworks_osb4_filter - mode selection filter
194 * @ap: ATA interface
195 * @adev: ATA device
196 *
197 * Filter the offered modes for the device to apply controller
198 * specific rules. OSB4 requires no UDMA for disks due to a FIFO
199 * bug we hit.
200 */
201
202 static unsigned long serverworks_osb4_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
203 {
204 if (adev->class == ATA_DEV_ATA)
205 mask &= ~ATA_MASK_UDMA;
206 return ata_pci_default_filter(ap, adev, mask);
207 }
208
209
210 /**
211 * serverworks_csb_filter - mode selection filter
212 * @ap: ATA interface
213 * @adev: ATA device
214 *
215 * Check the blacklist and disable UDMA5 if matched
216 */
217
218 static unsigned long serverworks_csb_filter(const struct ata_port *ap, struct ata_device *adev, unsigned long mask)
219 {
220 const char *p;
221 char model_num[40];
222 int len, i;
223
224 /* Disk, UDMA */
225 if (adev->class != ATA_DEV_ATA)
226 return ata_pci_default_filter(ap, adev, mask);
227
228 /* Actually do need to check */
229 ata_id_string(adev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num));
230 /* Precuationary - why not do this in the libata core ?? */
231
232 len = strlen(model_num);
233 while ((len > 0) && (model_num[len - 1] == ' ')) {
234 len--;
235 model_num[len] = 0;
236 }
237
238 for(i = 0; (p = csb_bad_ata100[i]) != NULL; i++) {
239 if (!strncmp(p, model_num, len))
240 mask &= ~(0x1F << ATA_SHIFT_UDMA);
241 }
242 return ata_pci_default_filter(ap, adev, mask);
243 }
244
245
246 /**
247 * serverworks_set_piomode - set initial PIO mode data
248 * @ap: ATA interface
249 * @adev: ATA device
250 *
251 * Program the OSB4/CSB5 timing registers for PIO. The PIO register
252 * load is done as a simple lookup.
253 */
254 static void serverworks_set_piomode(struct ata_port *ap, struct ata_device *adev)
255 {
256 static const u8 pio_mode[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 };
257 int offset = 1 + (2 * ap->port_no) - adev->devno;
258 int devbits = (2 * ap->port_no + adev->devno) * 4;
259 u16 csb5_pio;
260 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
261 int pio = adev->pio_mode - XFER_PIO_0;
262
263 pci_write_config_byte(pdev, 0x40 + offset, pio_mode[pio]);
264
265 /* The OSB4 just requires the timing but the CSB series want the
266 mode number as well */
267 if (serverworks_is_csb(pdev)) {
268 pci_read_config_word(pdev, 0x4A, &csb5_pio);
269 csb5_pio &= ~(0x0F << devbits);
270 pci_write_config_byte(pdev, 0x4A, csb5_pio | (pio << devbits));
271 }
272 }
273
274 /**
275 * serverworks_set_dmamode - set initial DMA mode data
276 * @ap: ATA interface
277 * @adev: ATA device
278 *
279 * Program the MWDMA/UDMA modes for the serverworks OSB4/CSB5
280 * chipset. The MWDMA mode values are pulled from a lookup table
281 * while the chipset uses mode number for UDMA.
282 */
283
284 static void serverworks_set_dmamode(struct ata_port *ap, struct ata_device *adev)
285 {
286 static const u8 dma_mode[] = { 0x77, 0x21, 0x20 };
287 int offset = 1 + 2 * ap->port_no - adev->devno;
288 int devbits = (2 * ap->port_no + adev->devno);
289 u8 ultra;
290 u8 ultra_cfg;
291 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
292
293 pci_read_config_byte(pdev, 0x54, &ultra_cfg);
294
295 if (adev->dma_mode >= XFER_UDMA_0) {
296 pci_write_config_byte(pdev, 0x44 + offset, 0x20);
297
298 pci_read_config_byte(pdev, 0x56 + ap->port_no, &ultra);
299 ultra &= ~(0x0F << (ap->port_no * 4));
300 ultra |= (adev->dma_mode - XFER_UDMA_0)
301 << (ap->port_no * 4);
302 pci_write_config_byte(pdev, 0x56 + ap->port_no, ultra);
303
304 ultra_cfg |= (1 << devbits);
305 } else {
306 pci_write_config_byte(pdev, 0x44 + offset,
307 dma_mode[adev->dma_mode - XFER_MW_DMA_0]);
308 ultra_cfg &= ~(1 << devbits);
309 }
310 pci_write_config_byte(pdev, 0x54, ultra_cfg);
311 }
312
313 static struct scsi_host_template serverworks_sht = {
314 .module = THIS_MODULE,
315 .name = DRV_NAME,
316 .ioctl = ata_scsi_ioctl,
317 .queuecommand = ata_scsi_queuecmd,
318 .can_queue = ATA_DEF_QUEUE,
319 .this_id = ATA_SHT_THIS_ID,
320 .sg_tablesize = LIBATA_MAX_PRD,
321 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
322 .emulated = ATA_SHT_EMULATED,
323 .use_clustering = ATA_SHT_USE_CLUSTERING,
324 .proc_name = DRV_NAME,
325 .dma_boundary = ATA_DMA_BOUNDARY,
326 .slave_configure = ata_scsi_slave_config,
327 .slave_destroy = ata_scsi_slave_destroy,
328 .bios_param = ata_std_bios_param,
329 #ifdef CONFIG_PM
330 .resume = ata_scsi_device_resume,
331 .suspend = ata_scsi_device_suspend,
332 #endif
333 };
334
335 static struct ata_port_operations serverworks_osb4_port_ops = {
336 .port_disable = ata_port_disable,
337 .set_piomode = serverworks_set_piomode,
338 .set_dmamode = serverworks_set_dmamode,
339 .mode_filter = serverworks_osb4_filter,
340
341 .tf_load = ata_tf_load,
342 .tf_read = ata_tf_read,
343 .check_status = ata_check_status,
344 .exec_command = ata_exec_command,
345 .dev_select = ata_std_dev_select,
346
347 .freeze = ata_bmdma_freeze,
348 .thaw = ata_bmdma_thaw,
349 .error_handler = serverworks_error_handler,
350 .post_internal_cmd = ata_bmdma_post_internal_cmd,
351
352 .bmdma_setup = ata_bmdma_setup,
353 .bmdma_start = ata_bmdma_start,
354 .bmdma_stop = ata_bmdma_stop,
355 .bmdma_status = ata_bmdma_status,
356
357 .qc_prep = ata_qc_prep,
358 .qc_issue = ata_qc_issue_prot,
359
360 .data_xfer = ata_pio_data_xfer,
361
362 .irq_handler = ata_interrupt,
363 .irq_clear = ata_bmdma_irq_clear,
364
365 .port_start = ata_port_start,
366 .port_stop = ata_port_stop,
367 .host_stop = ata_host_stop
368 };
369
370 static struct ata_port_operations serverworks_csb_port_ops = {
371 .port_disable = ata_port_disable,
372 .set_piomode = serverworks_set_piomode,
373 .set_dmamode = serverworks_set_dmamode,
374 .mode_filter = serverworks_csb_filter,
375
376 .tf_load = ata_tf_load,
377 .tf_read = ata_tf_read,
378 .check_status = ata_check_status,
379 .exec_command = ata_exec_command,
380 .dev_select = ata_std_dev_select,
381
382 .freeze = ata_bmdma_freeze,
383 .thaw = ata_bmdma_thaw,
384 .error_handler = serverworks_error_handler,
385 .post_internal_cmd = ata_bmdma_post_internal_cmd,
386
387 .bmdma_setup = ata_bmdma_setup,
388 .bmdma_start = ata_bmdma_start,
389 .bmdma_stop = ata_bmdma_stop,
390 .bmdma_status = ata_bmdma_status,
391
392 .qc_prep = ata_qc_prep,
393 .qc_issue = ata_qc_issue_prot,
394
395 .data_xfer = ata_pio_data_xfer,
396
397 .irq_handler = ata_interrupt,
398 .irq_clear = ata_bmdma_irq_clear,
399
400 .port_start = ata_port_start,
401 .port_stop = ata_port_stop,
402 .host_stop = ata_host_stop
403 };
404
405 static int serverworks_fixup_osb4(struct pci_dev *pdev)
406 {
407 u32 reg;
408 struct pci_dev *isa_dev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
409 PCI_DEVICE_ID_SERVERWORKS_OSB4, NULL);
410 if (isa_dev) {
411 pci_read_config_dword(isa_dev, 0x64, &reg);
412 reg &= ~0x00002000; /* disable 600ns interrupt mask */
413 if (!(reg & 0x00004000))
414 printk(KERN_DEBUG DRV_NAME ": UDMA not BIOS enabled.\n");
415 reg |= 0x00004000; /* enable UDMA/33 support */
416 pci_write_config_dword(isa_dev, 0x64, reg);
417 pci_dev_put(isa_dev);
418 return 0;
419 }
420 printk(KERN_WARNING "ata_serverworks: Unable to find bridge.\n");
421 return -ENODEV;
422 }
423
424 static int serverworks_fixup_csb(struct pci_dev *pdev)
425 {
426 u8 rev;
427 u8 btr;
428
429 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
430
431 /* Third Channel Test */
432 if (!(PCI_FUNC(pdev->devfn) & 1)) {
433 struct pci_dev * findev = NULL;
434 u32 reg4c = 0;
435 findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
436 PCI_DEVICE_ID_SERVERWORKS_CSB5, NULL);
437 if (findev) {
438 pci_read_config_dword(findev, 0x4C, &reg4c);
439 reg4c &= ~0x000007FF;
440 reg4c |= 0x00000040;
441 reg4c |= 0x00000020;
442 pci_write_config_dword(findev, 0x4C, reg4c);
443 pci_dev_put(findev);
444 }
445 } else {
446 struct pci_dev * findev = NULL;
447 u8 reg41 = 0;
448
449 findev = pci_get_device(PCI_VENDOR_ID_SERVERWORKS,
450 PCI_DEVICE_ID_SERVERWORKS_CSB6, NULL);
451 if (findev) {
452 pci_read_config_byte(findev, 0x41, &reg41);
453 reg41 &= ~0x40;
454 pci_write_config_byte(findev, 0x41, reg41);
455 pci_dev_put(findev);
456 }
457 }
458 /* setup the UDMA Control register
459 *
460 * 1. clear bit 6 to enable DMA
461 * 2. enable DMA modes with bits 0-1
462 * 00 : legacy
463 * 01 : udma2
464 * 10 : udma2/udma4
465 * 11 : udma2/udma4/udma5
466 */
467 pci_read_config_byte(pdev, 0x5A, &btr);
468 btr &= ~0x40;
469 if (!(PCI_FUNC(pdev->devfn) & 1))
470 btr |= 0x2;
471 else
472 btr |= (rev >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
473 pci_write_config_byte(pdev, 0x5A, btr);
474
475 return btr;
476 }
477
478 static void serverworks_fixup_ht1000(struct pci_dev *pdev)
479 {
480 u8 btr;
481 /* Setup HT1000 SouthBridge Controller - Single Channel Only */
482 pci_read_config_byte(pdev, 0x5A, &btr);
483 btr &= ~0x40;
484 btr |= 0x3;
485 pci_write_config_byte(pdev, 0x5A, btr);
486 }
487
488
489 static int serverworks_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
490 {
491 int ports = 2;
492 static struct ata_port_info info[4] = {
493 { /* OSB4 */
494 .sht = &serverworks_sht,
495 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
496 .pio_mask = 0x1f,
497 .mwdma_mask = 0x07,
498 .udma_mask = 0x07,
499 .port_ops = &serverworks_osb4_port_ops
500 }, { /* OSB4 no UDMA */
501 .sht = &serverworks_sht,
502 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
503 .pio_mask = 0x1f,
504 .mwdma_mask = 0x07,
505 .udma_mask = 0x00,
506 .port_ops = &serverworks_osb4_port_ops
507 }, { /* CSB5 */
508 .sht = &serverworks_sht,
509 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
510 .pio_mask = 0x1f,
511 .mwdma_mask = 0x07,
512 .udma_mask = 0x1f,
513 .port_ops = &serverworks_csb_port_ops
514 }, { /* CSB5 - later revisions*/
515 .sht = &serverworks_sht,
516 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
517 .pio_mask = 0x1f,
518 .mwdma_mask = 0x07,
519 .udma_mask = 0x3f,
520 .port_ops = &serverworks_csb_port_ops
521 }
522 };
523 static struct ata_port_info *port_info[2];
524 struct ata_port_info *devinfo = &info[id->driver_data];
525
526 /* Force master latency timer to 64 PCI clocks */
527 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x40);
528
529 /* OSB4 : South Bridge and IDE */
530 if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
531 /* Select non UDMA capable OSB4 if we can't do fixups */
532 if ( serverworks_fixup_osb4(pdev) < 0)
533 devinfo = &info[1];
534 }
535 /* setup CSB5/CSB6 : South Bridge and IDE option RAID */
536 else if ((pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE) ||
537 (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE) ||
538 (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)) {
539
540 /* If the returned btr is the newer revision then
541 select the right info block */
542 if (serverworks_fixup_csb(pdev) == 3)
543 devinfo = &info[3];
544
545 /* Is this the 3rd channel CSB6 IDE ? */
546 if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2)
547 ports = 1;
548 }
549 /* setup HT1000E */
550 else if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
551 serverworks_fixup_ht1000(pdev);
552
553 if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)
554 ata_pci_clear_simplex(pdev);
555
556 port_info[0] = port_info[1] = devinfo;
557 return ata_pci_init_one(pdev, port_info, ports);
558 }
559
560 #ifdef CONFIG_PM
561 static int serverworks_reinit_one(struct pci_dev *pdev)
562 {
563 /* Force master latency timer to 64 PCI clocks */
564 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x40);
565
566 switch (pdev->device)
567 {
568 case PCI_DEVICE_ID_SERVERWORKS_OSB4IDE:
569 serverworks_fixup_osb4(pdev);
570 break;
571 case PCI_DEVICE_ID_SERVERWORKS_CSB5IDE:
572 ata_pci_clear_simplex(pdev);
573 /* fall through */
574 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE:
575 case PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2:
576 serverworks_fixup_csb(pdev);
577 break;
578 case PCI_DEVICE_ID_SERVERWORKS_HT1000IDE:
579 serverworks_fixup_ht1000(pdev);
580 break;
581 }
582 return ata_pci_device_resume(pdev);
583 }
584 #endif
585
586 static const struct pci_device_id serverworks[] = {
587 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4IDE), 0},
588 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE), 2},
589 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE), 2},
590 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2), 2},
591 { PCI_VDEVICE(SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000IDE), 2},
592
593 { },
594 };
595
596 static struct pci_driver serverworks_pci_driver = {
597 .name = DRV_NAME,
598 .id_table = serverworks,
599 .probe = serverworks_init_one,
600 .remove = ata_pci_remove_one,
601 #ifdef CONFIG_PM
602 .suspend = ata_pci_device_suspend,
603 .resume = serverworks_reinit_one,
604 #endif
605 };
606
607 static int __init serverworks_init(void)
608 {
609 return pci_register_driver(&serverworks_pci_driver);
610 }
611
612 static void __exit serverworks_exit(void)
613 {
614 pci_unregister_driver(&serverworks_pci_driver);
615 }
616
617 MODULE_AUTHOR("Alan Cox");
618 MODULE_DESCRIPTION("low-level driver for Serverworks OSB4/CSB5/CSB6");
619 MODULE_LICENSE("GPL");
620 MODULE_DEVICE_TABLE(pci, serverworks);
621 MODULE_VERSION(DRV_VERSION);
622
623 module_init(serverworks_init);
624 module_exit(serverworks_exit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree