2 * sata_sil.c - Silicon Image SATA
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Please ALWAYS copy linux-ide@vger.kernel.org
8 * Copyright 2003-2005 Red Hat, Inc.
9 * Copyright 2003 Benjamin Herrenschmidt
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)
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.
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.
27 * libata documentation is available via 'make {ps|pdf}docs',
28 * as Documentation/DocBook/libata.*
30 * Documentation for SiI 3112:
31 * http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2
33 * Other errata and documentation available under NDA.
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>
48 #define DRV_NAME "sata_sil"
49 #define DRV_VERSION "2.3"
57 SIL_FLAG_NO_SATA_IRQ = (1 << 28),
58 SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
59 SIL_FLAG_MOD15WRITE = (1 << 30),
61 SIL_DFL_PORT_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
63 SIL_DFL_LINK_FLAGS = ATA_LFLAG_HRST_TO_RESUME,
69 sil_3112_no_sata_irq = 1,
82 SIL_MASK_IDE0_INT = (1 << 22),
83 SIL_MASK_IDE1_INT = (1 << 23),
84 SIL_MASK_IDE2_INT = (1 << 24),
85 SIL_MASK_IDE3_INT = (1 << 25),
86 SIL_MASK_2PORT = SIL_MASK_IDE0_INT | SIL_MASK_IDE1_INT,
87 SIL_MASK_4PORT = SIL_MASK_2PORT |
88 SIL_MASK_IDE2_INT | SIL_MASK_IDE3_INT,
91 SIL_INTR_STEERING = (1 << 1),
93 SIL_DMA_ENABLE = (1 << 0), /* DMA run switch */
94 SIL_DMA_RDWR = (1 << 3), /* DMA Rd-Wr */
95 SIL_DMA_SATA_IRQ = (1 << 4), /* OR of all SATA IRQs */
96 SIL_DMA_ACTIVE = (1 << 16), /* DMA running */
97 SIL_DMA_ERROR = (1 << 17), /* PCI bus error */
98 SIL_DMA_COMPLETE = (1 << 18), /* cmd complete / IRQ pending */
99 SIL_DMA_N_SATA_IRQ = (1 << 6), /* SATA_IRQ for the next channel */
100 SIL_DMA_N_ACTIVE = (1 << 24), /* ACTIVE for the next channel */
101 SIL_DMA_N_ERROR = (1 << 25), /* ERROR for the next channel */
102 SIL_DMA_N_COMPLETE = (1 << 26), /* COMPLETE for the next channel */
105 SIL_SIEN_N = (1 << 16), /* triggered by SError.N */
110 SIL_QUIRK_MOD15WRITE = (1 << 0),
111 SIL_QUIRK_UDMA5MAX = (1 << 1),
114 static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
116 static int sil_pci_device_resume(struct pci_dev *pdev);
118 static void sil_dev_config(struct ata_device *dev);
119 static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
120 static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
121 static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed);
122 static void sil_freeze(struct ata_port *ap);
123 static void sil_thaw(struct ata_port *ap);
126 static const struct pci_device_id sil_pci_tbl[] = {
127 { PCI_VDEVICE(CMD, 0x3112), sil_3112 },
128 { PCI_VDEVICE(CMD, 0x0240), sil_3112 },
129 { PCI_VDEVICE(CMD, 0x3512), sil_3512 },
130 { PCI_VDEVICE(CMD, 0x3114), sil_3114 },
131 { PCI_VDEVICE(ATI, 0x436e), sil_3112 },
132 { PCI_VDEVICE(ATI, 0x4379), sil_3112_no_sata_irq },
133 { PCI_VDEVICE(ATI, 0x437a), sil_3112_no_sata_irq },
135 { } /* terminate list */
139 /* TODO firmware versions should be added - eric */
140 static const struct sil_drivelist {
141 const char * product;
143 } sil_blacklist [] = {
144 { "ST320012AS", SIL_QUIRK_MOD15WRITE },
145 { "ST330013AS", SIL_QUIRK_MOD15WRITE },
146 { "ST340017AS", SIL_QUIRK_MOD15WRITE },
147 { "ST360015AS", SIL_QUIRK_MOD15WRITE },
148 { "ST380023AS", SIL_QUIRK_MOD15WRITE },
149 { "ST3120023AS", SIL_QUIRK_MOD15WRITE },
150 { "ST340014ASL", SIL_QUIRK_MOD15WRITE },
151 { "ST360014ASL", SIL_QUIRK_MOD15WRITE },
152 { "ST380011ASL", SIL_QUIRK_MOD15WRITE },
153 { "ST3120022ASL", SIL_QUIRK_MOD15WRITE },
154 { "ST3160021ASL", SIL_QUIRK_MOD15WRITE },
155 { "Maxtor 4D060H3", SIL_QUIRK_UDMA5MAX },
159 static struct pci_driver sil_pci_driver = {
161 .id_table = sil_pci_tbl,
162 .probe = sil_init_one,
163 .remove = ata_pci_remove_one,
165 .suspend = ata_pci_device_suspend,
166 .resume = sil_pci_device_resume,
170 static struct scsi_host_template sil_sht = {
171 .module = THIS_MODULE,
173 .ioctl = ata_scsi_ioctl,
174 .queuecommand = ata_scsi_queuecmd,
175 .can_queue = ATA_DEF_QUEUE,
176 .this_id = ATA_SHT_THIS_ID,
177 .sg_tablesize = LIBATA_MAX_PRD,
178 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
179 .emulated = ATA_SHT_EMULATED,
180 .use_clustering = ATA_SHT_USE_CLUSTERING,
181 .proc_name = DRV_NAME,
182 .dma_boundary = ATA_DMA_BOUNDARY,
183 .slave_configure = ata_scsi_slave_config,
184 .slave_destroy = ata_scsi_slave_destroy,
185 .bios_param = ata_std_bios_param,
188 static const struct ata_port_operations sil_ops = {
189 .port_disable = ata_port_disable,
190 .dev_config = sil_dev_config,
191 .tf_load = ata_tf_load,
192 .tf_read = ata_tf_read,
193 .check_status = ata_check_status,
194 .exec_command = ata_exec_command,
195 .dev_select = ata_std_dev_select,
196 .set_mode = sil_set_mode,
197 .bmdma_setup = ata_bmdma_setup,
198 .bmdma_start = ata_bmdma_start,
199 .bmdma_stop = ata_bmdma_stop,
200 .bmdma_status = ata_bmdma_status,
201 .qc_prep = ata_qc_prep,
202 .qc_issue = ata_qc_issue_prot,
203 .data_xfer = ata_data_xfer,
204 .freeze = sil_freeze,
206 .error_handler = ata_bmdma_error_handler,
207 .post_internal_cmd = ata_bmdma_post_internal_cmd,
208 .irq_clear = ata_bmdma_irq_clear,
209 .irq_on = ata_irq_on,
210 .irq_ack = ata_irq_ack,
211 .scr_read = sil_scr_read,
212 .scr_write = sil_scr_write,
213 .port_start = ata_port_start,
216 static const struct ata_port_info sil_port_info[] = {
219 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_MOD15WRITE,
220 .link_flags = SIL_DFL_LINK_FLAGS,
221 .pio_mask = 0x1f, /* pio0-4 */
222 .mwdma_mask = 0x07, /* mwdma0-2 */
223 .udma_mask = ATA_UDMA5,
224 .port_ops = &sil_ops,
226 /* sil_3112_no_sata_irq */
228 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_MOD15WRITE |
229 SIL_FLAG_NO_SATA_IRQ,
230 .link_flags = SIL_DFL_LINK_FLAGS,
231 .pio_mask = 0x1f, /* pio0-4 */
232 .mwdma_mask = 0x07, /* mwdma0-2 */
233 .udma_mask = ATA_UDMA5,
234 .port_ops = &sil_ops,
238 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
239 .link_flags = SIL_DFL_LINK_FLAGS,
240 .pio_mask = 0x1f, /* pio0-4 */
241 .mwdma_mask = 0x07, /* mwdma0-2 */
242 .udma_mask = ATA_UDMA5,
243 .port_ops = &sil_ops,
247 .flags = SIL_DFL_PORT_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
248 .link_flags = SIL_DFL_LINK_FLAGS,
249 .pio_mask = 0x1f, /* pio0-4 */
250 .mwdma_mask = 0x07, /* mwdma0-2 */
251 .udma_mask = ATA_UDMA5,
252 .port_ops = &sil_ops,
256 /* per-port register offsets */
257 /* TODO: we can probably calculate rather than use a table */
258 static const struct {
259 unsigned long tf; /* ATA taskfile register block */
260 unsigned long ctl; /* ATA control/altstatus register block */
261 unsigned long bmdma; /* DMA register block */
262 unsigned long bmdma2; /* DMA register block #2 */
263 unsigned long fifo_cfg; /* FIFO Valid Byte Count and Control */
264 unsigned long scr; /* SATA control register block */
265 unsigned long sien; /* SATA Interrupt Enable register */
266 unsigned long xfer_mode;/* data transfer mode register */
267 unsigned long sfis_cfg; /* SATA FIS reception config register */
270 /* tf ctl bmdma bmdma2 fifo scr sien mode sfis */
271 { 0x80, 0x8A, 0x0, 0x10, 0x40, 0x100, 0x148, 0xb4, 0x14c },
272 { 0xC0, 0xCA, 0x8, 0x18, 0x44, 0x180, 0x1c8, 0xf4, 0x1cc },
273 { 0x280, 0x28A, 0x200, 0x210, 0x240, 0x300, 0x348, 0x2b4, 0x34c },
274 { 0x2C0, 0x2CA, 0x208, 0x218, 0x244, 0x380, 0x3c8, 0x2f4, 0x3cc },
278 MODULE_AUTHOR("Jeff Garzik");
279 MODULE_DESCRIPTION("low-level driver for Silicon Image SATA controller");
280 MODULE_LICENSE("GPL");
281 MODULE_DEVICE_TABLE(pci, sil_pci_tbl);
282 MODULE_VERSION(DRV_VERSION);
284 static int slow_down = 0;
285 module_param(slow_down, int, 0444);
286 MODULE_PARM_DESC(slow_down, "Sledgehammer used to work around random problems, by limiting commands to 15 sectors (0=off, 1=on)");
289 static unsigned char sil_get_device_cache_line(struct pci_dev *pdev)
292 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line);
297 * sil_set_mode - wrap set_mode functions
298 * @link: link to set up
299 * @r_failed: returned device when we fail
301 * Wrap the libata method for device setup as after the setup we need
302 * to inspect the results and do some configuration work
305 static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed)
307 struct ata_port *ap = link->ap;
308 void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
309 void __iomem *addr = mmio_base + sil_port[ap->port_no].xfer_mode;
310 struct ata_device *dev;
311 u32 tmp, dev_mode[2] = { };
314 rc = ata_do_set_mode(link, r_failed);
318 ata_link_for_each_dev(dev, link) {
319 if (!ata_dev_enabled(dev))
320 dev_mode[dev->devno] = 0; /* PIO0/1/2 */
321 else if (dev->flags & ATA_DFLAG_PIO)
322 dev_mode[dev->devno] = 1; /* PIO3/4 */
324 dev_mode[dev->devno] = 3; /* UDMA */
325 /* value 2 indicates MDMA */
329 tmp &= ~((1<<5) | (1<<4) | (1<<1) | (1<<0));
331 tmp |= (dev_mode[1] << 4);
333 readl(addr); /* flush */
337 static inline void __iomem *sil_scr_addr(struct ata_port *ap, unsigned int sc_reg)
339 void __iomem *offset = ap->ioaddr.scr_addr;
356 static int sil_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
358 void __iomem *mmio = sil_scr_addr(ap, sc_reg);
367 static int sil_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
369 void __iomem *mmio = sil_scr_addr(ap, sc_reg);
378 static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
380 struct ata_eh_info *ehi = &ap->link.eh_info;
381 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
384 if (unlikely(bmdma2 & SIL_DMA_SATA_IRQ)) {
387 /* SIEN doesn't mask SATA IRQs on some 3112s. Those
388 * controllers continue to assert IRQ as long as
389 * SError bits are pending. Clear SError immediately.
391 sil_scr_read(ap, SCR_ERROR, &serror);
392 sil_scr_write(ap, SCR_ERROR, serror);
394 /* Trigger hotplug and accumulate SError only if the
395 * port isn't already frozen. Otherwise, PHY events
396 * during hardreset makes controllers with broken SIEN
397 * repeat probing needlessly.
399 if (!(ap->pflags & ATA_PFLAG_FROZEN)) {
400 ata_ehi_hotplugged(&ap->link.eh_info);
401 ap->link.eh_info.serror |= serror;
410 if (unlikely(qc->tf.flags & ATA_TFLAG_POLLING)) {
411 /* this sometimes happens, just clear IRQ */
416 /* Check whether we are expecting interrupt in this state */
417 switch (ap->hsm_task_state) {
419 /* Some pre-ATAPI-4 devices assert INTRQ
420 * at this state when ready to receive CDB.
423 /* Check the ATA_DFLAG_CDB_INTR flag is enough here.
424 * The flag was turned on only for atapi devices.
425 * No need to check is_atapi_taskfile(&qc->tf) again.
427 if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))
431 if (qc->tf.protocol == ATA_PROT_DMA ||
432 qc->tf.protocol == ATA_PROT_ATAPI_DMA) {
433 /* clear DMA-Start bit */
434 ap->ops->bmdma_stop(qc);
436 if (bmdma2 & SIL_DMA_ERROR) {
437 qc->err_mask |= AC_ERR_HOST_BUS;
438 ap->hsm_task_state = HSM_ST_ERR;
448 /* check main status, clearing INTRQ */
449 status = ata_chk_status(ap);
450 if (unlikely(status & ATA_BUSY))
453 /* ack bmdma irq events */
454 ata_bmdma_irq_clear(ap);
456 /* kick HSM in the ass */
457 ata_hsm_move(ap, qc, status, 0);
459 if (unlikely(qc->err_mask) && (qc->tf.protocol == ATA_PROT_DMA ||
460 qc->tf.protocol == ATA_PROT_ATAPI_DMA))
461 ata_ehi_push_desc(ehi, "BMDMA2 stat 0x%x", bmdma2);
466 qc->err_mask |= AC_ERR_HSM;
471 static irqreturn_t sil_interrupt(int irq, void *dev_instance)
473 struct ata_host *host = dev_instance;
474 void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
478 spin_lock(&host->lock);
480 for (i = 0; i < host->n_ports; i++) {
481 struct ata_port *ap = host->ports[i];
482 u32 bmdma2 = readl(mmio_base + sil_port[ap->port_no].bmdma2);
484 if (unlikely(!ap || ap->flags & ATA_FLAG_DISABLED))
487 /* turn off SATA_IRQ if not supported */
488 if (ap->flags & SIL_FLAG_NO_SATA_IRQ)
489 bmdma2 &= ~SIL_DMA_SATA_IRQ;
491 if (bmdma2 == 0xffffffff ||
492 !(bmdma2 & (SIL_DMA_COMPLETE | SIL_DMA_SATA_IRQ)))
495 sil_host_intr(ap, bmdma2);
499 spin_unlock(&host->lock);
501 return IRQ_RETVAL(handled);
504 static void sil_freeze(struct ata_port *ap)
506 void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
509 /* global IRQ mask doesn't block SATA IRQ, turn off explicitly */
510 writel(0, mmio_base + sil_port[ap->port_no].sien);
513 tmp = readl(mmio_base + SIL_SYSCFG);
514 tmp |= SIL_MASK_IDE0_INT << ap->port_no;
515 writel(tmp, mmio_base + SIL_SYSCFG);
516 readl(mmio_base + SIL_SYSCFG); /* flush */
519 static void sil_thaw(struct ata_port *ap)
521 void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
526 ata_bmdma_irq_clear(ap);
528 /* turn on SATA IRQ if supported */
529 if (!(ap->flags & SIL_FLAG_NO_SATA_IRQ))
530 writel(SIL_SIEN_N, mmio_base + sil_port[ap->port_no].sien);
533 tmp = readl(mmio_base + SIL_SYSCFG);
534 tmp &= ~(SIL_MASK_IDE0_INT << ap->port_no);
535 writel(tmp, mmio_base + SIL_SYSCFG);
539 * sil_dev_config - Apply device/host-specific errata fixups
540 * @dev: Device to be examined
542 * After the IDENTIFY [PACKET] DEVICE step is complete, and a
543 * device is known to be present, this function is called.
544 * We apply two errata fixups which are specific to Silicon Image,
545 * a Seagate and a Maxtor fixup.
547 * For certain Seagate devices, we must limit the maximum sectors
550 * For certain Maxtor devices, we must not program the drive
553 * Both fixups are unfairly pessimistic. As soon as I get more
554 * information on these errata, I will create a more exhaustive
555 * list, and apply the fixups to only the specific
556 * devices/hosts/firmwares that need it.
558 * 20040111 - Seagate drives affected by the Mod15Write bug are blacklisted
559 * The Maxtor quirk is in the blacklist, but I'm keeping the original
560 * pessimistic fix for the following reasons...
561 * - There seems to be less info on it, only one device gleaned off the
562 * Windows driver, maybe only one is affected. More info would be greatly
564 * - But then again UDMA5 is hardly anything to complain about
566 static void sil_dev_config(struct ata_device *dev)
568 struct ata_port *ap = dev->link->ap;
569 int print_info = ap->link.eh_context.i.flags & ATA_EHI_PRINTINFO;
570 unsigned int n, quirks = 0;
571 unsigned char model_num[ATA_ID_PROD_LEN + 1];
573 ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
575 for (n = 0; sil_blacklist[n].product; n++)
576 if (!strcmp(sil_blacklist[n].product, model_num)) {
577 quirks = sil_blacklist[n].quirk;
581 /* limit requests to 15 sectors */
583 ((ap->flags & SIL_FLAG_MOD15WRITE) &&
584 (quirks & SIL_QUIRK_MOD15WRITE))) {
586 ata_dev_printk(dev, KERN_INFO, "applying Seagate "
587 "errata fix (mod15write workaround)\n");
588 dev->max_sectors = 15;
593 if (quirks & SIL_QUIRK_UDMA5MAX) {
595 ata_dev_printk(dev, KERN_INFO, "applying Maxtor "
596 "errata fix %s\n", model_num);
597 dev->udma_mask &= ATA_UDMA5;
602 static void sil_init_controller(struct ata_host *host)
604 struct pci_dev *pdev = to_pci_dev(host->dev);
605 void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
610 /* Initialize FIFO PCI bus arbitration */
611 cls = sil_get_device_cache_line(pdev);
614 cls++; /* cls = (line_size/8)+1 */
615 for (i = 0; i < host->n_ports; i++)
616 writew(cls << 8 | cls,
617 mmio_base + sil_port[i].fifo_cfg);
619 dev_printk(KERN_WARNING, &pdev->dev,
620 "cache line size not set. Driver may not function\n");
622 /* Apply R_ERR on DMA activate FIS errata workaround */
623 if (host->ports[0]->flags & SIL_FLAG_RERR_ON_DMA_ACT) {
626 for (i = 0, cnt = 0; i < host->n_ports; i++) {
627 tmp = readl(mmio_base + sil_port[i].sfis_cfg);
628 if ((tmp & 0x3) != 0x01)
631 dev_printk(KERN_INFO, &pdev->dev,
632 "Applying R_ERR on DMA activate "
634 writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
639 if (host->n_ports == 4) {
640 /* flip the magic "make 4 ports work" bit */
641 tmp = readl(mmio_base + sil_port[2].bmdma);
642 if ((tmp & SIL_INTR_STEERING) == 0)
643 writel(tmp | SIL_INTR_STEERING,
644 mmio_base + sil_port[2].bmdma);
648 static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
650 static int printed_version;
651 int board_id = ent->driver_data;
652 const struct ata_port_info *ppi[] = { &sil_port_info[board_id], NULL };
653 struct ata_host *host;
654 void __iomem *mmio_base;
658 if (!printed_version++)
659 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
663 if (board_id == sil_3114)
666 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
670 /* acquire resources and fill host */
671 rc = pcim_enable_device(pdev);
675 rc = pcim_iomap_regions(pdev, 1 << SIL_MMIO_BAR, DRV_NAME);
677 pcim_pin_device(pdev);
680 host->iomap = pcim_iomap_table(pdev);
682 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
685 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
689 mmio_base = host->iomap[SIL_MMIO_BAR];
691 for (i = 0; i < host->n_ports; i++) {
692 struct ata_ioports *ioaddr = &host->ports[i]->ioaddr;
694 ioaddr->cmd_addr = mmio_base + sil_port[i].tf;
695 ioaddr->altstatus_addr =
696 ioaddr->ctl_addr = mmio_base + sil_port[i].ctl;
697 ioaddr->bmdma_addr = mmio_base + sil_port[i].bmdma;
698 ioaddr->scr_addr = mmio_base + sil_port[i].scr;
699 ata_std_ports(ioaddr);
702 /* initialize and activate */
703 sil_init_controller(host);
705 pci_set_master(pdev);
706 return ata_host_activate(host, pdev->irq, sil_interrupt, IRQF_SHARED,
711 static int sil_pci_device_resume(struct pci_dev *pdev)
713 struct ata_host *host = dev_get_drvdata(&pdev->dev);
716 rc = ata_pci_device_do_resume(pdev);
720 sil_init_controller(host);
721 ata_host_resume(host);
727 static int __init sil_init(void)
729 return pci_register_driver(&sil_pci_driver);
732 static void __exit sil_exit(void)
734 pci_unregister_driver(&sil_pci_driver);
738 module_init(sil_init);
739 module_exit(sil_exit);