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-rw-r--r--drivers/ata/Kconfig6
-rw-r--r--drivers/ata/Makefile1
-rw-r--r--drivers/ata/sata_inic162x.c809
3 files changed, 816 insertions, 0 deletions
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index f72b3415d75f..ea102c089222 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -147,6 +147,12 @@ config SATA_VITESSE
147 147
148 If unsure, say N. 148 If unsure, say N.
149 149
150config SATA_INIC162X
151 tristate "Initio 162x SATA support (HIGHLY EXPERIMENTAL)"
152 depends on PCI && EXPERIMENTAL
153 help
154 This option enables support for Initio 162x Serial ATA.
155
150config SATA_INTEL_COMBINED 156config SATA_INTEL_COMBINED
151 bool 157 bool
152 depends on IDE=y && !BLK_DEV_IDE_SATA && (SATA_AHCI || ATA_PIIX) 158 depends on IDE=y && !BLK_DEV_IDE_SATA && (SATA_AHCI || ATA_PIIX)
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index a0df15d9e4a1..cd096f0c78a1 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_SATA_SX4) += sata_sx4.o
15obj-$(CONFIG_SATA_NV) += sata_nv.o 15obj-$(CONFIG_SATA_NV) += sata_nv.o
16obj-$(CONFIG_SATA_ULI) += sata_uli.o 16obj-$(CONFIG_SATA_ULI) += sata_uli.o
17obj-$(CONFIG_SATA_MV) += sata_mv.o 17obj-$(CONFIG_SATA_MV) += sata_mv.o
18obj-$(CONFIG_SATA_INIC162X) += sata_inic162x.o
18obj-$(CONFIG_PDC_ADMA) += pdc_adma.o 19obj-$(CONFIG_PDC_ADMA) += pdc_adma.o
19 20
20obj-$(CONFIG_PATA_ALI) += pata_ali.o 21obj-$(CONFIG_PATA_ALI) += pata_ali.o
diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
new file mode 100644
index 000000000000..b67817e440c5
--- /dev/null
+++ b/drivers/ata/sata_inic162x.c
@@ -0,0 +1,809 @@
1/*
2 * sata_inic162x.c - Driver for Initio 162x SATA controllers
3 *
4 * Copyright 2006 SUSE Linux Products GmbH
5 * Copyright 2006 Tejun Heo <teheo@novell.com>
6 *
7 * This file is released under GPL v2.
8 *
9 * This controller is eccentric and easily locks up if something isn't
10 * right. Documentation is available at initio's website but it only
11 * documents registers (not programming model).
12 *
13 * - ATA disks work.
14 * - Hotplug works.
15 * - ATAPI read works but burning doesn't. This thing is really
16 * peculiar about ATAPI and I couldn't figure out how ATAPI PIO and
17 * ATAPI DMA WRITE should be programmed. If you've got a clue, be
18 * my guest.
19 * - Both STR and STD work.
20 */
21
22#include <linux/kernel.h>
23#include <linux/module.h>
24#include <linux/pci.h>
25#include <scsi/scsi_host.h>
26#include <linux/libata.h>
27#include <linux/blkdev.h>
28#include <scsi/scsi_device.h>
29
30#define DRV_NAME "sata_inic162x"
31#define DRV_VERSION "0.1"
32
33enum {
34 MMIO_BAR = 5,
35
36 NR_PORTS = 2,
37
38 HOST_CTL = 0x7c,
39 HOST_STAT = 0x7e,
40 HOST_IRQ_STAT = 0xbc,
41 HOST_IRQ_MASK = 0xbe,
42
43 PORT_SIZE = 0x40,
44
45 /* registers for ATA TF operation */
46 PORT_TF = 0x00,
47 PORT_ALT_STAT = 0x08,
48 PORT_IRQ_STAT = 0x09,
49 PORT_IRQ_MASK = 0x0a,
50 PORT_PRD_CTL = 0x0b,
51 PORT_PRD_ADDR = 0x0c,
52 PORT_PRD_XFERLEN = 0x10,
53
54 /* IDMA register */
55 PORT_IDMA_CTL = 0x14,
56
57 PORT_SCR = 0x20,
58
59 /* HOST_CTL bits */
60 HCTL_IRQOFF = (1 << 8), /* global IRQ off */
61 HCTL_PWRDWN = (1 << 13), /* power down PHYs */
62 HCTL_SOFTRST = (1 << 13), /* global reset (no phy reset) */
63 HCTL_RPGSEL = (1 << 15), /* register page select */
64
65 HCTL_KNOWN_BITS = HCTL_IRQOFF | HCTL_PWRDWN | HCTL_SOFTRST |
66 HCTL_RPGSEL,
67
68 /* HOST_IRQ_(STAT|MASK) bits */
69 HIRQ_PORT0 = (1 << 0),
70 HIRQ_PORT1 = (1 << 1),
71 HIRQ_SOFT = (1 << 14),
72 HIRQ_GLOBAL = (1 << 15), /* STAT only */
73
74 /* PORT_IRQ_(STAT|MASK) bits */
75 PIRQ_OFFLINE = (1 << 0), /* device unplugged */
76 PIRQ_ONLINE = (1 << 1), /* device plugged */
77 PIRQ_COMPLETE = (1 << 2), /* completion interrupt */
78 PIRQ_FATAL = (1 << 3), /* fatal error */
79 PIRQ_ATA = (1 << 4), /* ATA interrupt */
80 PIRQ_REPLY = (1 << 5), /* reply FIFO not empty */
81 PIRQ_PENDING = (1 << 7), /* port IRQ pending (STAT only) */
82
83 PIRQ_ERR = PIRQ_OFFLINE | PIRQ_ONLINE | PIRQ_FATAL,
84
85 PIRQ_MASK_DMA_READ = PIRQ_REPLY | PIRQ_ATA,
86 PIRQ_MASK_OTHER = PIRQ_REPLY | PIRQ_COMPLETE,
87 PIRQ_MASK_FREEZE = 0xff,
88
89 /* PORT_PRD_CTL bits */
90 PRD_CTL_START = (1 << 0),
91 PRD_CTL_WR = (1 << 3),
92 PRD_CTL_DMAEN = (1 << 7), /* DMA enable */
93
94 /* PORT_IDMA_CTL bits */
95 IDMA_CTL_RST_ATA = (1 << 2), /* hardreset ATA bus */
96 IDMA_CTL_RST_IDMA = (1 << 5), /* reset IDMA machinary */
97 IDMA_CTL_GO = (1 << 7), /* IDMA mode go */
98 IDMA_CTL_ATA_NIEN = (1 << 8), /* ATA IRQ disable */
99};
100
101struct inic_host_priv {
102 u16 cached_hctl;
103};
104
105struct inic_port_priv {
106 u8 dfl_prdctl;
107 u8 cached_prdctl;
108 u8 cached_pirq_mask;
109};
110
111static int inic_slave_config(struct scsi_device *sdev)
112{
113 /* This controller is braindamaged. dma_boundary is 0xffff
114 * like others but it will lock up the whole machine HARD if
115 * 65536 byte PRD entry is fed. Reduce maximum segment size.
116 */
117 blk_queue_max_segment_size(sdev->request_queue, 65536 - 512);
118
119 return ata_scsi_slave_config(sdev);
120}
121
122static struct scsi_host_template inic_sht = {
123 .module = THIS_MODULE,
124 .name = DRV_NAME,
125 .ioctl = ata_scsi_ioctl,
126 .queuecommand = ata_scsi_queuecmd,
127 .can_queue = ATA_DEF_QUEUE,
128 .this_id = ATA_SHT_THIS_ID,
129 .sg_tablesize = LIBATA_MAX_PRD,
130 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
131 .emulated = ATA_SHT_EMULATED,
132 .use_clustering = ATA_SHT_USE_CLUSTERING,
133 .proc_name = DRV_NAME,
134 .dma_boundary = ATA_DMA_BOUNDARY,
135 .slave_configure = inic_slave_config,
136 .slave_destroy = ata_scsi_slave_destroy,
137 .bios_param = ata_std_bios_param,
138 .suspend = ata_scsi_device_suspend,
139 .resume = ata_scsi_device_resume,
140};
141
142static const int scr_map[] = {
143 [SCR_STATUS] = 0,
144 [SCR_ERROR] = 1,
145 [SCR_CONTROL] = 2,
146};
147
148static void __iomem * inic_port_base(struct ata_port *ap)
149{
150 return ap->host->mmio_base + ap->port_no * PORT_SIZE;
151}
152
153static void __inic_set_pirq_mask(struct ata_port *ap, u8 mask)
154{
155 void __iomem *port_base = inic_port_base(ap);
156 struct inic_port_priv *pp = ap->private_data;
157
158 writeb(mask, port_base + PORT_IRQ_MASK);
159 pp->cached_pirq_mask = mask;
160}
161
162static void inic_set_pirq_mask(struct ata_port *ap, u8 mask)
163{
164 struct inic_port_priv *pp = ap->private_data;
165
166 if (pp->cached_pirq_mask != mask)
167 __inic_set_pirq_mask(ap, mask);
168}
169
170static void inic_reset_port(void __iomem *port_base)
171{
172 void __iomem *idma_ctl = port_base + PORT_IDMA_CTL;
173 u16 ctl;
174
175 ctl = readw(idma_ctl);
176 ctl &= ~(IDMA_CTL_RST_IDMA | IDMA_CTL_ATA_NIEN | IDMA_CTL_GO);
177
178 /* mask IRQ and assert reset */
179 writew(ctl | IDMA_CTL_RST_IDMA | IDMA_CTL_ATA_NIEN, idma_ctl);
180 readw(idma_ctl); /* flush */
181
182 /* give it some time */
183 msleep(1);
184
185 /* release reset */
186 writew(ctl | IDMA_CTL_ATA_NIEN, idma_ctl);
187
188 /* clear irq */
189 writeb(0xff, port_base + PORT_IRQ_STAT);
190
191 /* reenable ATA IRQ, turn off IDMA mode */
192 writew(ctl, idma_ctl);
193}
194
195static u32 inic_scr_read(struct ata_port *ap, unsigned sc_reg)
196{
197 void __iomem *scr_addr = (void __iomem *)ap->ioaddr.scr_addr;
198 void __iomem *addr;
199 u32 val;
200
201 if (unlikely(sc_reg >= ARRAY_SIZE(scr_map)))
202 return 0xffffffffU;
203
204 addr = scr_addr + scr_map[sc_reg] * 4;
205 val = readl(scr_addr + scr_map[sc_reg] * 4);
206
207 /* this controller has stuck DIAG.N, ignore it */
208 if (sc_reg == SCR_ERROR)
209 val &= ~SERR_PHYRDY_CHG;
210 return val;
211}
212
213static void inic_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val)
214{
215 void __iomem *scr_addr = (void __iomem *)ap->ioaddr.scr_addr;
216 void __iomem *addr;
217
218 if (unlikely(sc_reg >= ARRAY_SIZE(scr_map)))
219 return;
220
221 addr = scr_addr + scr_map[sc_reg] * 4;
222 writel(val, scr_addr + scr_map[sc_reg] * 4);
223}
224
225/*
226 * In TF mode, inic162x is very similar to SFF device. TF registers
227 * function the same. DMA engine behaves similary using the same PRD
228 * format as BMDMA but different command register, interrupt and event
229 * notification methods are used. The following inic_bmdma_*()
230 * functions do the impedance matching.
231 */
232static void inic_bmdma_setup(struct ata_queued_cmd *qc)
233{
234 struct ata_port *ap = qc->ap;
235 struct inic_port_priv *pp = ap->private_data;
236 void __iomem *port_base = inic_port_base(ap);
237 int rw = qc->tf.flags & ATA_TFLAG_WRITE;
238
239 /* make sure device sees PRD table writes */
240 wmb();
241
242 /* load transfer length */
243 writel(qc->nbytes, port_base + PORT_PRD_XFERLEN);
244
245 /* turn on DMA and specify data direction */
246 pp->cached_prdctl = pp->dfl_prdctl | PRD_CTL_DMAEN;
247 if (!rw)
248 pp->cached_prdctl |= PRD_CTL_WR;
249 writeb(pp->cached_prdctl, port_base + PORT_PRD_CTL);
250
251 /* issue r/w command */
252 ap->ops->exec_command(ap, &qc->tf);
253}
254
255static void inic_bmdma_start(struct ata_queued_cmd *qc)
256{
257 struct ata_port *ap = qc->ap;
258 struct inic_port_priv *pp = ap->private_data;
259 void __iomem *port_base = inic_port_base(ap);
260
261 /* start host DMA transaction */
262 pp->cached_prdctl |= PRD_CTL_START;
263 writeb(pp->cached_prdctl, port_base + PORT_PRD_CTL);
264}
265
266static void inic_bmdma_stop(struct ata_queued_cmd *qc)
267{
268 struct ata_port *ap = qc->ap;
269 struct inic_port_priv *pp = ap->private_data;
270 void __iomem *port_base = inic_port_base(ap);
271
272 /* stop DMA engine */
273 writeb(pp->dfl_prdctl, port_base + PORT_PRD_CTL);
274}
275
276static u8 inic_bmdma_status(struct ata_port *ap)
277{
278 /* event is already verified by the interrupt handler */
279 return ATA_DMA_INTR;
280}
281
282static void inic_irq_clear(struct ata_port *ap)
283{
284 /* noop */
285}
286
287static void inic_host_intr(struct ata_port *ap)
288{
289 void __iomem *port_base = inic_port_base(ap);
290 struct ata_eh_info *ehi = &ap->eh_info;
291 u8 irq_stat;
292
293 /* fetch and clear irq */
294 irq_stat = readb(port_base + PORT_IRQ_STAT);
295 writeb(irq_stat, port_base + PORT_IRQ_STAT);
296
297 if (likely(!(irq_stat & PIRQ_ERR))) {
298 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->active_tag);
299
300 if (unlikely(!qc || (qc->tf.flags & ATA_TFLAG_POLLING))) {
301 ata_chk_status(ap); /* clear ATA interrupt */
302 return;
303 }
304
305 if (likely(ata_host_intr(ap, qc)))
306 return;
307
308 ata_chk_status(ap); /* clear ATA interrupt */
309 ata_port_printk(ap, KERN_WARNING, "unhandled "
310 "interrupt, irq_stat=%x\n", irq_stat);
311 return;
312 }
313
314 /* error */
315 ata_ehi_push_desc(ehi, "irq_stat=0x%x", irq_stat);
316
317 if (irq_stat & (PIRQ_OFFLINE | PIRQ_ONLINE)) {
318 ata_ehi_hotplugged(ehi);
319 ata_port_freeze(ap);
320 } else
321 ata_port_abort(ap);
322}
323
324static irqreturn_t inic_interrupt(int irq, void *dev_instance)
325{
326 struct ata_host *host = dev_instance;
327 void __iomem *mmio_base = host->mmio_base;
328 u16 host_irq_stat;
329 int i, handled = 0;;
330
331 host_irq_stat = readw(mmio_base + HOST_IRQ_STAT);
332
333 if (unlikely(!(host_irq_stat & HIRQ_GLOBAL)))
334 goto out;
335
336 spin_lock(&host->lock);
337
338 for (i = 0; i < NR_PORTS; i++) {
339 struct ata_port *ap = host->ports[i];
340
341 if (!(host_irq_stat & (HIRQ_PORT0 << i)))
342 continue;
343
344 if (likely(ap && !(ap->flags & ATA_FLAG_DISABLED))) {
345 inic_host_intr(ap);
346 handled++;
347 } else {
348 if (ata_ratelimit())
349 dev_printk(KERN_ERR, host->dev, "interrupt "
350 "from disabled port %d (0x%x)\n",
351 i, host_irq_stat);
352 }
353 }
354
355 spin_unlock(&host->lock);
356
357 out:
358 return IRQ_RETVAL(handled);
359}
360
361static unsigned int inic_qc_issue(struct ata_queued_cmd *qc)
362{
363 struct ata_port *ap = qc->ap;
364
365 /* ATA IRQ doesn't wait for DMA transfer completion and vice
366 * versa. Mask IRQ selectively to detect command completion.
367 * Without it, ATA DMA read command can cause data corruption.
368 *
369 * Something similar might be needed for ATAPI writes. I
370 * tried a lot of combinations but couldn't find the solution.
371 */
372 if (qc->tf.protocol == ATA_PROT_DMA &&
373 !(qc->tf.flags & ATA_TFLAG_WRITE))
374 inic_set_pirq_mask(ap, PIRQ_MASK_DMA_READ);
375 else
376 inic_set_pirq_mask(ap, PIRQ_MASK_OTHER);
377
378 /* Issuing a command to yet uninitialized port locks up the
379 * controller. Most of the time, this happens for the first
380 * command after reset which are ATA and ATAPI IDENTIFYs.
381 * Fast fail if stat is 0x7f or 0xff for those commands.
382 */
383 if (unlikely(qc->tf.command == ATA_CMD_ID_ATA ||
384 qc->tf.command == ATA_CMD_ID_ATAPI)) {
385 u8 stat = ata_chk_status(ap);
386 if (stat == 0x7f || stat == 0xff)
387 return AC_ERR_HSM;
388 }
389
390 return ata_qc_issue_prot(qc);
391}
392
393static void inic_freeze(struct ata_port *ap)
394{
395 void __iomem *port_base = inic_port_base(ap);
396
397 __inic_set_pirq_mask(ap, PIRQ_MASK_FREEZE);
398
399 ata_chk_status(ap);
400 writeb(0xff, port_base + PORT_IRQ_STAT);
401
402 readb(port_base + PORT_IRQ_STAT); /* flush */
403}
404
405static void inic_thaw(struct ata_port *ap)
406{
407 void __iomem *port_base = inic_port_base(ap);
408
409 ata_chk_status(ap);
410 writeb(0xff, port_base + PORT_IRQ_STAT);
411
412 __inic_set_pirq_mask(ap, PIRQ_MASK_OTHER);
413
414 readb(port_base + PORT_IRQ_STAT); /* flush */
415}
416
417/*
418 * SRST and SControl hardreset don't give valid signature on this
419 * controller. Only controller specific hardreset mechanism works.
420 */
421static int inic_hardreset(struct ata_port *ap, unsigned int *class)
422{
423 void __iomem *port_base = inic_port_base(ap);
424 void __iomem *idma_ctl = port_base + PORT_IDMA_CTL;
425 const unsigned long *timing = sata_ehc_deb_timing(&ap->eh_context);
426 u16 val;
427 int rc;
428
429 /* hammer it into sane state */
430 inic_reset_port(port_base);
431
432 if (ata_port_offline(ap)) {
433 *class = ATA_DEV_NONE;
434 return 0;
435 }
436
437 val = readw(idma_ctl);
438 writew(val | IDMA_CTL_RST_ATA, idma_ctl);
439 readw(idma_ctl); /* flush */
440 msleep(1);
441 writew(val & ~IDMA_CTL_RST_ATA, idma_ctl);
442
443 rc = sata_phy_resume(ap, timing);
444 if (rc) {
445 ata_port_printk(ap, KERN_WARNING, "failed to resume "
446 "link for reset (errno=%d)\n", rc);
447 return rc;
448 }
449
450 msleep(150);
451
452 *class = ATA_DEV_NONE;
453 if (ata_port_online(ap)) {
454 struct ata_taskfile tf;
455
456 if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
457 ata_port_printk(ap, KERN_WARNING,
458 "device busy after hardreset\n");
459 return -EIO;
460 }
461
462 ata_tf_read(ap, &tf);
463 *class = ata_dev_classify(&tf);
464 if (*class == ATA_DEV_UNKNOWN)
465 *class = ATA_DEV_NONE;
466 }
467
468 return 0;
469}
470
471static void inic_error_handler(struct ata_port *ap)
472{
473 void __iomem *port_base = inic_port_base(ap);
474 struct inic_port_priv *pp = ap->private_data;
475 unsigned long flags;
476
477 /* reset PIO HSM and stop DMA engine */
478 inic_reset_port(port_base);
479
480 spin_lock_irqsave(ap->lock, flags);
481 ap->hsm_task_state = HSM_ST_IDLE;
482 writeb(pp->dfl_prdctl, port_base + PORT_PRD_CTL);
483 spin_unlock_irqrestore(ap->lock, flags);
484
485 /* PIO and DMA engines have been stopped, perform recovery */
486 ata_do_eh(ap, ata_std_prereset, NULL, inic_hardreset,
487 ata_std_postreset);
488}
489
490static void inic_post_internal_cmd(struct ata_queued_cmd *qc)
491{
492 /* make DMA engine forget about the failed command */
493 if (qc->err_mask)
494 inic_reset_port(inic_port_base(qc->ap));
495}
496
497static void inic_dev_config(struct ata_port *ap, struct ata_device *dev)
498{
499 /* inic can only handle upto LBA28 max sectors */
500 if (dev->max_sectors > ATA_MAX_SECTORS)
501 dev->max_sectors = ATA_MAX_SECTORS;
502}
503
504static void init_port(struct ata_port *ap)
505{
506 void __iomem *port_base = inic_port_base(ap);
507
508 /* Setup PRD address */
509 writel(ap->prd_dma, port_base + PORT_PRD_ADDR);
510}
511
512static int inic_port_resume(struct ata_port *ap)
513{
514 init_port(ap);
515 return 0;
516}
517
518static int inic_port_start(struct ata_port *ap)
519{
520 void __iomem *port_base = inic_port_base(ap);
521 struct inic_port_priv *pp;
522 u8 tmp;
523 int rc;
524
525 /* alloc and initialize private data */
526 pp = kzalloc(sizeof(*pp), GFP_KERNEL);
527 if (!pp)
528 return -ENOMEM;
529 ap->private_data = pp;
530
531 /* default PRD_CTL value, DMAEN, WR and START off */
532 tmp = readb(port_base + PORT_PRD_CTL);
533 tmp &= ~(PRD_CTL_DMAEN | PRD_CTL_WR | PRD_CTL_START);
534 pp->dfl_prdctl = tmp;
535
536 /* Alloc resources */
537 rc = ata_port_start(ap);
538 if (rc) {
539 kfree(pp);
540 return rc;
541 }
542
543 init_port(ap);
544
545 return 0;
546}
547
548static void inic_port_stop(struct ata_port *ap)
549{
550 ata_port_stop(ap);
551 kfree(ap->private_data);
552}
553
554static struct ata_port_operations inic_port_ops = {
555 .port_disable = ata_port_disable,
556 .tf_load = ata_tf_load,
557 .tf_read = ata_tf_read,
558 .check_status = ata_check_status,
559 .exec_command = ata_exec_command,
560 .dev_select = ata_std_dev_select,
561
562 .scr_read = inic_scr_read,
563 .scr_write = inic_scr_write,
564
565 .bmdma_setup = inic_bmdma_setup,
566 .bmdma_start = inic_bmdma_start,
567 .bmdma_stop = inic_bmdma_stop,
568 .bmdma_status = inic_bmdma_status,
569
570 .irq_handler = inic_interrupt,
571 .irq_clear = inic_irq_clear,
572
573 .qc_prep = ata_qc_prep,
574 .qc_issue = inic_qc_issue,
575 .data_xfer = ata_pio_data_xfer,
576
577 .freeze = inic_freeze,
578 .thaw = inic_thaw,
579 .error_handler = inic_error_handler,
580 .post_internal_cmd = inic_post_internal_cmd,
581 .dev_config = inic_dev_config,
582
583 .port_resume = inic_port_resume,
584
585 .port_start = inic_port_start,
586 .port_stop = inic_port_stop,
587 .host_stop = ata_pci_host_stop
588};
589
590static struct ata_port_info inic_port_info = {
591 .sht = &inic_sht,
592 /* For some reason, ATA_PROT_ATAPI is broken on this
593 * controller, and no, PIO_POLLING does't fix it. It somehow
594 * manages to report the wrong ireason and ignoring ireason
595 * results in machine lock up. Tell libata to always prefer
596 * DMA.
597 */
598 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
599 .pio_mask = 0x1f, /* pio0-4 */
600 .mwdma_mask = 0x07, /* mwdma0-2 */
601 .udma_mask = 0x7f, /* udma0-6 */
602 .port_ops = &inic_port_ops
603};
604
605static int init_controller(void __iomem *mmio_base, u16 hctl)
606{
607 int i;
608 u16 val;
609
610 hctl &= ~HCTL_KNOWN_BITS;
611
612 /* Soft reset whole controller. Spec says reset duration is 3
613 * PCI clocks, be generous and give it 10ms.
614 */
615 writew(hctl | HCTL_SOFTRST, mmio_base + HOST_CTL);
616 readw(mmio_base + HOST_CTL); /* flush */
617
618 for (i = 0; i < 10; i++) {
619 msleep(1);
620 val = readw(mmio_base + HOST_CTL);
621 if (!(val & HCTL_SOFTRST))
622 break;
623 }
624
625 if (val & HCTL_SOFTRST)
626 return -EIO;
627
628 /* mask all interrupts and reset ports */
629 for (i = 0; i < NR_PORTS; i++) {
630 void __iomem *port_base = mmio_base + i * PORT_SIZE;
631
632 writeb(0xff, port_base + PORT_IRQ_MASK);
633 inic_reset_port(port_base);
634 }
635
636 /* port IRQ is masked now, unmask global IRQ */
637 writew(hctl & ~HCTL_IRQOFF, mmio_base + HOST_CTL);
638 val = readw(mmio_base + HOST_IRQ_MASK);
639 val &= ~(HIRQ_PORT0 | HIRQ_PORT1);
640 writew(val, mmio_base + HOST_IRQ_MASK);
641
642 return 0;
643}
644
645static int inic_pci_device_resume(struct pci_dev *pdev)
646{
647 struct ata_host *host = dev_get_drvdata(&pdev->dev);
648 struct inic_host_priv *hpriv = host->private_data;
649 void __iomem *mmio_base = host->mmio_base;
650 int rc;
651
652 ata_pci_device_do_resume(pdev);
653
654 if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
655 printk("XXX\n");
656 rc = init_controller(mmio_base, hpriv->cached_hctl);
657 if (rc)
658 return rc;
659 }
660
661 ata_host_resume(host);
662
663 return 0;
664}
665
666static int inic_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
667{
668 static int printed_version;
669 struct ata_port_info *pinfo = &inic_port_info;
670 struct ata_probe_ent *probe_ent;
671 struct inic_host_priv *hpriv;
672 void __iomem *mmio_base;
673 int i, rc;
674
675 if (!printed_version++)
676 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
677
678 rc = pci_enable_device(pdev);
679 if (rc)
680 return rc;
681
682 rc = pci_request_regions(pdev, DRV_NAME);
683 if (rc)
684 goto err_out;
685
686 rc = -ENOMEM;
687 mmio_base = pci_iomap(pdev, MMIO_BAR, 0);
688 if (!mmio_base)
689 goto err_out_regions;
690
691 /* Set dma_mask. This devices doesn't support 64bit addressing. */
692 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
693 if (rc) {
694 dev_printk(KERN_ERR, &pdev->dev,
695 "32-bit DMA enable failed\n");
696 goto err_out_map;
697 }
698
699 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
700 if (rc) {
701 dev_printk(KERN_ERR, &pdev->dev,
702 "32-bit consistent DMA enable failed\n");
703 goto err_out_map;
704 }
705
706 rc = -ENOMEM;
707 probe_ent = kzalloc(sizeof(*probe_ent), GFP_KERNEL);
708 if (!probe_ent)
709 goto err_out_map;
710
711 hpriv = kzalloc(sizeof(*hpriv), GFP_KERNEL);
712 if (!hpriv)
713 goto err_out_ent;
714
715 probe_ent->dev = &pdev->dev;
716 INIT_LIST_HEAD(&probe_ent->node);
717
718 probe_ent->sht = pinfo->sht;
719 probe_ent->port_flags = pinfo->flags;
720 probe_ent->pio_mask = pinfo->pio_mask;
721 probe_ent->mwdma_mask = pinfo->mwdma_mask;
722 probe_ent->udma_mask = pinfo->udma_mask;
723 probe_ent->port_ops = pinfo->port_ops;
724 probe_ent->n_ports = NR_PORTS;
725
726 probe_ent->irq = pdev->irq;
727 probe_ent->irq_flags = SA_SHIRQ;
728
729 probe_ent->mmio_base = mmio_base;
730
731 for (i = 0; i < NR_PORTS; i++) {
732 struct ata_ioports *port = &probe_ent->port[i];
733 unsigned long port_base =
734 (unsigned long)mmio_base + i * PORT_SIZE;
735
736 port->cmd_addr = pci_resource_start(pdev, 2 * i);
737 port->altstatus_addr =
738 port->ctl_addr =
739 pci_resource_start(pdev, 2 * i + 1) | ATA_PCI_CTL_OFS;
740 port->scr_addr = port_base + PORT_SCR;
741
742 ata_std_ports(port);
743 }
744
745 probe_ent->private_data = hpriv;
746 hpriv->cached_hctl = readw(mmio_base + HOST_CTL);
747
748 rc = init_controller(mmio_base, hpriv->cached_hctl);
749 if (rc) {
750 dev_printk(KERN_ERR, &pdev->dev,
751 "failed to initialize controller\n");
752 goto err_out_hpriv;
753 }
754
755 pci_set_master(pdev);
756
757 rc = -ENODEV;
758 if (!ata_device_add(probe_ent))
759 goto err_out_hpriv;
760
761 kfree(probe_ent);
762
763 return 0;
764
765 err_out_hpriv:
766 kfree(hpriv);
767 err_out_ent:
768 kfree(probe_ent);
769 err_out_map:
770 pci_iounmap(pdev, mmio_base);
771 err_out_regions:
772 pci_release_regions(pdev);
773 err_out:
774 pci_disable_device(pdev);
775 return rc;
776}
777
778static const struct pci_device_id inic_pci_tbl[] = {
779 { PCI_VDEVICE(INIT, 0x1622), },
780 { },
781};
782
783static struct pci_driver inic_pci_driver = {
784 .name = DRV_NAME,
785 .id_table = inic_pci_tbl,
786 .suspend = ata_pci_device_suspend,
787 .resume = inic_pci_device_resume,
788 .probe = inic_init_one,
789 .remove = ata_pci_remove_one,
790};
791
792static int __init inic_init(void)
793{
794 return pci_register_driver(&inic_pci_driver);
795}
796
797static void __exit inic_exit(void)
798{
799 pci_unregister_driver(&inic_pci_driver);
800}
801
802MODULE_AUTHOR("Tejun Heo");
803MODULE_DESCRIPTION("low-level driver for Initio 162x SATA");
804MODULE_LICENSE("GPL v2");
805MODULE_DEVICE_TABLE(pci, inic_pci_tbl);
806MODULE_VERSION(DRV_VERSION);
807
808module_init(inic_init);
809module_exit(inic_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 23:02:20 -0500