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 "0.9"
52 SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
53 SIL_FLAG_MOD15WRITE = (1 << 30),
70 SIL_MASK_IDE0_INT = (1 << 22),
71 SIL_MASK_IDE1_INT = (1 << 23),
72 SIL_MASK_IDE2_INT = (1 << 24),
73 SIL_MASK_IDE3_INT = (1 << 25),
74 SIL_MASK_2PORT = SIL_MASK_IDE0_INT | SIL_MASK_IDE1_INT,
75 SIL_MASK_4PORT = SIL_MASK_2PORT |
76 SIL_MASK_IDE2_INT | SIL_MASK_IDE3_INT,
78 SIL_IDE2_BMDMA = 0x200,
80 SIL_INTR_STEERING = (1 << 1),
81 SIL_QUIRK_MOD15WRITE = (1 << 0),
82 SIL_QUIRK_UDMA5MAX = (1 << 1),
85 static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
86 static void sil_dev_config(struct ata_port *ap, struct ata_device *dev);
87 static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg);
88 static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
89 static void sil_post_set_mode (struct ata_port *ap);
92 static const struct pci_device_id sil_pci_tbl[] = {
93 { 0x1095, 0x3112, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
94 { 0x1095, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
95 { 0x1095, 0x3512, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3512 },
96 { 0x1095, 0x3114, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3114 },
97 { 0x1002, 0x436e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
98 { 0x1002, 0x4379, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
99 { 0x1002, 0x437a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sil_3112_m15w },
100 { } /* terminate list */
104 /* TODO firmware versions should be added - eric */
105 static const struct sil_drivelist {
106 const char * product;
108 } sil_blacklist [] = {
109 { "ST320012AS", SIL_QUIRK_MOD15WRITE },
110 { "ST330013AS", SIL_QUIRK_MOD15WRITE },
111 { "ST340017AS", SIL_QUIRK_MOD15WRITE },
112 { "ST360015AS", SIL_QUIRK_MOD15WRITE },
113 { "ST380013AS", SIL_QUIRK_MOD15WRITE },
114 { "ST380023AS", SIL_QUIRK_MOD15WRITE },
115 { "ST3120023AS", SIL_QUIRK_MOD15WRITE },
116 { "ST3160023AS", SIL_QUIRK_MOD15WRITE },
117 { "ST3120026AS", SIL_QUIRK_MOD15WRITE },
118 { "ST3200822AS", SIL_QUIRK_MOD15WRITE },
119 { "ST340014ASL", SIL_QUIRK_MOD15WRITE },
120 { "ST360014ASL", SIL_QUIRK_MOD15WRITE },
121 { "ST380011ASL", SIL_QUIRK_MOD15WRITE },
122 { "ST3120022ASL", SIL_QUIRK_MOD15WRITE },
123 { "ST3160021ASL", SIL_QUIRK_MOD15WRITE },
124 { "Maxtor 4D060H3", SIL_QUIRK_UDMA5MAX },
128 static struct pci_driver sil_pci_driver = {
130 .id_table = sil_pci_tbl,
131 .probe = sil_init_one,
132 .remove = ata_pci_remove_one,
135 static struct scsi_host_template sil_sht = {
136 .module = THIS_MODULE,
138 .ioctl = ata_scsi_ioctl,
139 .queuecommand = ata_scsi_queuecmd,
140 .eh_timed_out = ata_scsi_timed_out,
141 .eh_strategy_handler = ata_scsi_error,
142 .can_queue = ATA_DEF_QUEUE,
143 .this_id = ATA_SHT_THIS_ID,
144 .sg_tablesize = LIBATA_MAX_PRD,
145 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
146 .emulated = ATA_SHT_EMULATED,
147 .use_clustering = ATA_SHT_USE_CLUSTERING,
148 .proc_name = DRV_NAME,
149 .dma_boundary = ATA_DMA_BOUNDARY,
150 .slave_configure = ata_scsi_slave_config,
151 .bios_param = ata_std_bios_param,
154 static const struct ata_port_operations sil_ops = {
155 .port_disable = ata_port_disable,
156 .dev_config = sil_dev_config,
157 .tf_load = ata_tf_load,
158 .tf_read = ata_tf_read,
159 .check_status = ata_check_status,
160 .exec_command = ata_exec_command,
161 .dev_select = ata_std_dev_select,
162 .probe_reset = ata_std_probe_reset,
163 .post_set_mode = sil_post_set_mode,
164 .bmdma_setup = ata_bmdma_setup,
165 .bmdma_start = ata_bmdma_start,
166 .bmdma_stop = ata_bmdma_stop,
167 .bmdma_status = ata_bmdma_status,
168 .qc_prep = ata_qc_prep,
169 .qc_issue = ata_qc_issue_prot,
170 .eng_timeout = ata_eng_timeout,
171 .irq_handler = ata_interrupt,
172 .irq_clear = ata_bmdma_irq_clear,
173 .scr_read = sil_scr_read,
174 .scr_write = sil_scr_write,
175 .port_start = ata_port_start,
176 .port_stop = ata_port_stop,
177 .host_stop = ata_pci_host_stop,
180 static const struct ata_port_info sil_port_info[] = {
184 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
186 .pio_mask = 0x1f, /* pio0-4 */
187 .mwdma_mask = 0x07, /* mwdma0-2 */
188 .udma_mask = 0x3f, /* udma0-5 */
189 .port_ops = &sil_ops,
191 /* sil_3112_15w - keep it sync'd w/ sil_3112 */
194 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
195 ATA_FLAG_MMIO | SIL_FLAG_MOD15WRITE,
196 .pio_mask = 0x1f, /* pio0-4 */
197 .mwdma_mask = 0x07, /* mwdma0-2 */
198 .udma_mask = 0x3f, /* udma0-5 */
199 .port_ops = &sil_ops,
204 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
205 ATA_FLAG_SRST | ATA_FLAG_MMIO |
206 SIL_FLAG_RERR_ON_DMA_ACT,
207 .pio_mask = 0x1f, /* pio0-4 */
208 .mwdma_mask = 0x07, /* mwdma0-2 */
209 .udma_mask = 0x3f, /* udma0-5 */
210 .port_ops = &sil_ops,
215 .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
217 SIL_FLAG_RERR_ON_DMA_ACT,
218 .pio_mask = 0x1f, /* pio0-4 */
219 .mwdma_mask = 0x07, /* mwdma0-2 */
220 .udma_mask = 0x3f, /* udma0-5 */
221 .port_ops = &sil_ops,
225 /* per-port register offsets */
226 /* TODO: we can probably calculate rather than use a table */
227 static const struct {
228 unsigned long tf; /* ATA taskfile register block */
229 unsigned long ctl; /* ATA control/altstatus register block */
230 unsigned long bmdma; /* DMA register block */
231 unsigned long scr; /* SATA control register block */
232 unsigned long sien; /* SATA Interrupt Enable register */
233 unsigned long xfer_mode;/* data transfer mode register */
234 unsigned long sfis_cfg; /* SATA FIS reception config register */
237 { 0x80, 0x8A, 0x00, 0x100, 0x148, 0xb4, 0x14c },
238 { 0xC0, 0xCA, 0x08, 0x180, 0x1c8, 0xf4, 0x1cc },
239 { 0x280, 0x28A, 0x200, 0x300, 0x348, 0x2b4, 0x34c },
240 { 0x2C0, 0x2CA, 0x208, 0x380, 0x3c8, 0x2f4, 0x3cc },
244 MODULE_AUTHOR("Jeff Garzik");
245 MODULE_DESCRIPTION("low-level driver for Silicon Image SATA controller");
246 MODULE_LICENSE("GPL");
247 MODULE_DEVICE_TABLE(pci, sil_pci_tbl);
248 MODULE_VERSION(DRV_VERSION);
250 static int slow_down = 0;
251 module_param(slow_down, int, 0444);
252 MODULE_PARM_DESC(slow_down, "Sledgehammer used to work around random problems, by limiting commands to 15 sectors (0=off, 1=on)");
255 static unsigned char sil_get_device_cache_line(struct pci_dev *pdev)
258 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_line);
262 static void sil_post_set_mode (struct ata_port *ap)
264 struct ata_host_set *host_set = ap->host_set;
265 struct ata_device *dev;
267 host_set->mmio_base + sil_port[ap->port_no].xfer_mode;
268 u32 tmp, dev_mode[2];
271 for (i = 0; i < 2; i++) {
272 dev = &ap->device[i];
273 if (!ata_dev_present(dev))
274 dev_mode[i] = 0; /* PIO0/1/2 */
275 else if (dev->flags & ATA_DFLAG_PIO)
276 dev_mode[i] = 1; /* PIO3/4 */
278 dev_mode[i] = 3; /* UDMA */
279 /* value 2 indicates MDMA */
283 tmp &= ~((1<<5) | (1<<4) | (1<<1) | (1<<0));
285 tmp |= (dev_mode[1] << 4);
287 readl(addr); /* flush */
290 static inline unsigned long sil_scr_addr(struct ata_port *ap, unsigned int sc_reg)
292 unsigned long offset = ap->ioaddr.scr_addr;
309 static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg)
311 void __iomem *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg);
317 static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
319 void *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg);
325 * sil_dev_config - Apply device/host-specific errata fixups
326 * @ap: Port containing device to be examined
327 * @dev: Device to be examined
329 * After the IDENTIFY [PACKET] DEVICE step is complete, and a
330 * device is known to be present, this function is called.
331 * We apply two errata fixups which are specific to Silicon Image,
332 * a Seagate and a Maxtor fixup.
334 * For certain Seagate devices, we must limit the maximum sectors
337 * For certain Maxtor devices, we must not program the drive
340 * Both fixups are unfairly pessimistic. As soon as I get more
341 * information on these errata, I will create a more exhaustive
342 * list, and apply the fixups to only the specific
343 * devices/hosts/firmwares that need it.
345 * 20040111 - Seagate drives affected by the Mod15Write bug are blacklisted
346 * The Maxtor quirk is in the blacklist, but I'm keeping the original
347 * pessimistic fix for the following reasons...
348 * - There seems to be less info on it, only one device gleaned off the
349 * Windows driver, maybe only one is affected. More info would be greatly
351 * - But then again UDMA5 is hardly anything to complain about
353 static void sil_dev_config(struct ata_port *ap, struct ata_device *dev)
355 unsigned int n, quirks = 0;
356 unsigned char model_num[41];
358 ata_id_c_string(dev->id, model_num, ATA_ID_PROD_OFS, sizeof(model_num));
360 for (n = 0; sil_blacklist[n].product; n++)
361 if (!strcmp(sil_blacklist[n].product, model_num)) {
362 quirks = sil_blacklist[n].quirk;
366 /* limit requests to 15 sectors */
368 ((ap->flags & SIL_FLAG_MOD15WRITE) &&
369 (quirks & SIL_QUIRK_MOD15WRITE))) {
370 printk(KERN_INFO "ata%u(%u): applying Seagate errata fix (mod15write workaround)\n",
372 dev->max_sectors = 15;
377 if (quirks & SIL_QUIRK_UDMA5MAX) {
378 printk(KERN_INFO "ata%u(%u): applying Maxtor errata fix %s\n",
379 ap->id, dev->devno, model_num);
380 ap->udma_mask &= ATA_UDMA5;
385 static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
387 static int printed_version;
388 struct ata_probe_ent *probe_ent = NULL;
390 void __iomem *mmio_base;
393 int pci_dev_busy = 0;
397 if (!printed_version++)
398 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
401 * If this driver happens to only be useful on Apple's K2, then
402 * we should check that here as it has a normal Serverworks ID
404 rc = pci_enable_device(pdev);
408 rc = pci_request_regions(pdev, DRV_NAME);
414 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
416 goto err_out_regions;
417 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
419 goto err_out_regions;
421 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
422 if (probe_ent == NULL) {
424 goto err_out_regions;
427 memset(probe_ent, 0, sizeof(*probe_ent));
428 INIT_LIST_HEAD(&probe_ent->node);
429 probe_ent->dev = pci_dev_to_dev(pdev);
430 probe_ent->port_ops = sil_port_info[ent->driver_data].port_ops;
431 probe_ent->sht = sil_port_info[ent->driver_data].sht;
432 probe_ent->n_ports = (ent->driver_data == sil_3114) ? 4 : 2;
433 probe_ent->pio_mask = sil_port_info[ent->driver_data].pio_mask;
434 probe_ent->mwdma_mask = sil_port_info[ent->driver_data].mwdma_mask;
435 probe_ent->udma_mask = sil_port_info[ent->driver_data].udma_mask;
436 probe_ent->irq = pdev->irq;
437 probe_ent->irq_flags = SA_SHIRQ;
438 probe_ent->host_flags = sil_port_info[ent->driver_data].host_flags;
440 mmio_base = pci_iomap(pdev, 5, 0);
441 if (mmio_base == NULL) {
443 goto err_out_free_ent;
446 probe_ent->mmio_base = mmio_base;
448 base = (unsigned long) mmio_base;
450 for (i = 0; i < probe_ent->n_ports; i++) {
451 probe_ent->port[i].cmd_addr = base + sil_port[i].tf;
452 probe_ent->port[i].altstatus_addr =
453 probe_ent->port[i].ctl_addr = base + sil_port[i].ctl;
454 probe_ent->port[i].bmdma_addr = base + sil_port[i].bmdma;
455 probe_ent->port[i].scr_addr = base + sil_port[i].scr;
456 ata_std_ports(&probe_ent->port[i]);
459 /* Initialize FIFO PCI bus arbitration */
460 cls = sil_get_device_cache_line(pdev);
463 cls++; /* cls = (line_size/8)+1 */
464 writeb(cls, mmio_base + SIL_FIFO_R0);
465 writeb(cls, mmio_base + SIL_FIFO_W0);
466 writeb(cls, mmio_base + SIL_FIFO_R1);
467 writeb(cls, mmio_base + SIL_FIFO_W1);
468 if (ent->driver_data == sil_3114) {
469 writeb(cls, mmio_base + SIL_FIFO_R2);
470 writeb(cls, mmio_base + SIL_FIFO_W2);
471 writeb(cls, mmio_base + SIL_FIFO_R3);
472 writeb(cls, mmio_base + SIL_FIFO_W3);
475 dev_printk(KERN_WARNING, &pdev->dev,
476 "cache line size not set. Driver may not function\n");
478 /* Apply R_ERR on DMA activate FIS errata workaround */
479 if (probe_ent->host_flags & SIL_FLAG_RERR_ON_DMA_ACT) {
482 for (i = 0, cnt = 0; i < probe_ent->n_ports; i++) {
483 tmp = readl(mmio_base + sil_port[i].sfis_cfg);
484 if ((tmp & 0x3) != 0x01)
487 dev_printk(KERN_INFO, &pdev->dev,
488 "Applying R_ERR on DMA activate "
490 writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
495 if (ent->driver_data == sil_3114) {
496 irq_mask = SIL_MASK_4PORT;
498 /* flip the magic "make 4 ports work" bit */
499 tmp = readl(mmio_base + SIL_IDE2_BMDMA);
500 if ((tmp & SIL_INTR_STEERING) == 0)
501 writel(tmp | SIL_INTR_STEERING,
502 mmio_base + SIL_IDE2_BMDMA);
505 irq_mask = SIL_MASK_2PORT;
508 /* make sure IDE0/1/2/3 interrupts are not masked */
509 tmp = readl(mmio_base + SIL_SYSCFG);
510 if (tmp & irq_mask) {
512 writel(tmp, mmio_base + SIL_SYSCFG);
513 readl(mmio_base + SIL_SYSCFG); /* flush */
516 /* mask all SATA phy-related interrupts */
517 /* TODO: unmask bit 6 (SError N bit) for hotplug */
518 for (i = 0; i < probe_ent->n_ports; i++)
519 writel(0, mmio_base + sil_port[i].sien);
521 pci_set_master(pdev);
523 /* FIXME: check ata_device_add return value */
524 ata_device_add(probe_ent);
532 pci_release_regions(pdev);
535 pci_disable_device(pdev);
539 static int __init sil_init(void)
541 return pci_module_init(&sil_pci_driver);
544 static void __exit sil_exit(void)
546 pci_unregister_driver(&sil_pci_driver);
550 module_init(sil_init);
551 module_exit(sil_exit);