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[people/ms/u-boot.git] / drivers / block / sata_sil3114.c
1 /*
2 * Copyright (C) Excito Elektronik i Skåne AB, All rights reserved.
3 * Author: Tor Krill <tor@excito.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 *
7 * This is a driver for Silicon Image sil3114 sata chip modelled on
8 * the ata_piix driver
9 */
10
11 #include <common.h>
12 #include <pci.h>
13 #include <command.h>
14 #include <config.h>
15 #include <asm/byteorder.h>
16 #include <asm/io.h>
17 #include <ide.h>
18 #include <sata.h>
19 #include <libata.h>
20 #include "sata_sil3114.h"
21
22 /* Convert sectorsize to wordsize */
23 #define ATA_SECTOR_WORDS (ATA_SECT_SIZE/2)
24
25 /* Forwards */
26 u8 sil3114_spin_up (int num);
27 u8 sil3114_spin_down (int num);
28 static int sata_bus_softreset (int num);
29 static void sata_identify (int num, int dev);
30 static u8 check_power_mode (int num);
31 static void sata_port (struct sata_ioports *ioport);
32 static void set_Feature_cmd (int num, int dev);
33 static u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits,
34 unsigned int max, u8 usealtstatus);
35 static u8 sata_chk_status (struct sata_ioports *ioaddr, u8 usealtstatus);
36 static void msleep (int count);
37
38 static u32 iobase[6] = { 0, 0, 0, 0, 0, 0}; /* PCI BAR registers for device */
39
40 static struct sata_port port[CONFIG_SYS_SATA_MAX_DEVICE];
41
42 static void output_data (struct sata_ioports *ioaddr, u16 * sect_buf, int words)
43 {
44 while (words--) {
45 __raw_writew (*sect_buf++, (void *)ioaddr->data_addr);
46 }
47 }
48
49 static int input_data (struct sata_ioports *ioaddr, u16 * sect_buf, int words)
50 {
51 while (words--) {
52 *sect_buf++ = __raw_readw ((void *)ioaddr->data_addr);
53 }
54 return 0;
55 }
56
57 static int sata_bus_softreset (int num)
58 {
59 u8 status = 0;
60
61 port[num].dev_mask = 1;
62
63 port[num].ctl_reg = 0x08; /*Default value of control reg */
64 writeb (port[num].ctl_reg, port[num].ioaddr.ctl_addr);
65 udelay (10);
66 writeb (port[num].ctl_reg | ATA_SRST, port[num].ioaddr.ctl_addr);
67 udelay (10);
68 writeb (port[num].ctl_reg, port[num].ioaddr.ctl_addr);
69
70 /* spec mandates ">= 2ms" before checking status.
71 * We wait 150ms, because that was the magic delay used for
72 * ATAPI devices in Hale Landis's ATADRVR, for the period of time
73 * between when the ATA command register is written, and then
74 * status is checked. Because waiting for "a while" before
75 * checking status is fine, post SRST, we perform this magic
76 * delay here as well.
77 */
78 msleep (150);
79 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 300, 0);
80 while ((status & ATA_BUSY)) {
81 msleep (100);
82 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 3, 0);
83 }
84
85 if (status & ATA_BUSY) {
86 printf ("ata%u is slow to respond,plz be patient\n", num);
87 }
88
89 while ((status & ATA_BUSY)) {
90 msleep (100);
91 status = sata_chk_status (&port[num].ioaddr, 0);
92 }
93
94 if (status & ATA_BUSY) {
95 printf ("ata%u failed to respond : ", num);
96 printf ("bus reset failed\n");
97 port[num].dev_mask = 0;
98 return 1;
99 }
100 return 0;
101 }
102
103 static void sata_identify (int num, int dev)
104 {
105 u8 cmd = 0, status = 0, devno = num;
106 u16 iobuf[ATA_SECTOR_WORDS];
107 u64 n_sectors = 0;
108
109 memset (iobuf, 0, sizeof (iobuf));
110
111 if (!(port[num].dev_mask & 0x01)) {
112 printf ("dev%d is not present on port#%d\n", dev, num);
113 return;
114 }
115
116 debug ("port=%d dev=%d\n", num, dev);
117
118 status = 0;
119 cmd = ATA_CMD_ID_ATA; /*Device Identify Command */
120 writeb (cmd, port[num].ioaddr.command_addr);
121 readb (port[num].ioaddr.altstatus_addr);
122 udelay (10);
123
124 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 1000, 0);
125 if (status & ATA_ERR) {
126 printf ("\ndevice not responding\n");
127 port[num].dev_mask &= ~0x01;
128 return;
129 }
130
131 input_data (&port[num].ioaddr, iobuf, ATA_SECTOR_WORDS);
132
133 ata_swap_buf_le16 (iobuf, ATA_SECTOR_WORDS);
134
135 debug ("Specific config: %x\n", iobuf[2]);
136
137 /* we require LBA and DMA support (bits 8 & 9 of word 49) */
138 if (!ata_id_has_dma (iobuf) || !ata_id_has_lba (iobuf)) {
139 debug ("ata%u: no dma/lba\n", num);
140 }
141 #ifdef DEBUG
142 ata_dump_id (iobuf);
143 #endif
144 n_sectors = ata_id_n_sectors (iobuf);
145
146 if (n_sectors == 0) {
147 port[num].dev_mask &= ~0x01;
148 return;
149 }
150 ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].revision,
151 ATA_ID_FW_REV, sizeof (sata_dev_desc[devno].revision));
152 ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].vendor,
153 ATA_ID_PROD, sizeof (sata_dev_desc[devno].vendor));
154 ata_id_c_string (iobuf, (unsigned char *)sata_dev_desc[devno].product,
155 ATA_ID_SERNO, sizeof (sata_dev_desc[devno].product));
156
157 /* TODO - atm we asume harddisk ie not removable */
158 sata_dev_desc[devno].removable = 0;
159
160 sata_dev_desc[devno].lba = (u32) n_sectors;
161 debug("lba=0x%lx\n", sata_dev_desc[devno].lba);
162
163 #ifdef CONFIG_LBA48
164 if (iobuf[83] & (1 << 10)) {
165 sata_dev_desc[devno].lba48 = 1;
166 } else {
167 sata_dev_desc[devno].lba48 = 0;
168 }
169 #endif
170
171 /* assuming HD */
172 sata_dev_desc[devno].type = DEV_TYPE_HARDDISK;
173 sata_dev_desc[devno].blksz = ATA_SECT_SIZE;
174 sata_dev_desc[devno].lun = 0; /* just to fill something in... */
175 }
176
177 static void set_Feature_cmd (int num, int dev)
178 {
179 u8 status = 0;
180
181 if (!(port[num].dev_mask & 0x01)) {
182 debug ("dev%d is not present on port#%d\n", dev, num);
183 return;
184 }
185
186 writeb (SETFEATURES_XFER, port[num].ioaddr.feature_addr);
187 writeb (XFER_PIO_4, port[num].ioaddr.nsect_addr);
188 writeb (0, port[num].ioaddr.lbal_addr);
189 writeb (0, port[num].ioaddr.lbam_addr);
190 writeb (0, port[num].ioaddr.lbah_addr);
191
192 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
193 writeb (ATA_CMD_SET_FEATURES, port[num].ioaddr.command_addr);
194
195 udelay (50);
196 msleep (150);
197
198 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000, 0);
199 if ((status & (ATA_BUSY | ATA_ERR))) {
200 printf ("Error : status 0x%02x\n", status);
201 port[num].dev_mask &= ~0x01;
202 }
203 }
204
205 u8 sil3114_spin_down (int num)
206 {
207 u8 status = 0;
208
209 debug ("Spin down disk\n");
210
211 if (!(port[num].dev_mask & 0x01)) {
212 debug ("Device ata%d is not present\n", num);
213 return 1;
214 }
215
216 if ((status = check_power_mode (num)) == 0x00) {
217 debug ("Already in standby\n");
218 return 0;
219 }
220
221 if (status == 0x01) {
222 printf ("Failed to check power mode on ata%d\n", num);
223 return 1;
224 }
225
226 if (!((status = sata_chk_status (&port[num].ioaddr, 0)) & ATA_DRDY)) {
227 printf ("Device ata%d not ready\n", num);
228 return 1;
229 }
230
231 writeb (0x00, port[num].ioaddr.feature_addr);
232
233 writeb (0x00, port[num].ioaddr.nsect_addr);
234 writeb (0x00, port[num].ioaddr.lbal_addr);
235 writeb (0x00, port[num].ioaddr.lbam_addr);
236 writeb (0x00, port[num].ioaddr.lbah_addr);
237
238 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
239 writeb (ATA_CMD_STANDBY, port[num].ioaddr.command_addr);
240
241 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 30000, 0);
242 if ((status & (ATA_BUSY | ATA_ERR))) {
243 printf ("Error waiting for disk spin down: status 0x%02x\n",
244 status);
245 port[num].dev_mask &= ~0x01;
246 return 1;
247 }
248 return 0;
249 }
250
251 u8 sil3114_spin_up (int num)
252 {
253 u8 status = 0;
254
255 debug ("Spin up disk\n");
256
257 if (!(port[num].dev_mask & 0x01)) {
258 debug ("Device ata%d is not present\n", num);
259 return 1;
260 }
261
262 if ((status = check_power_mode (num)) != 0x00) {
263 if (status == 0x01) {
264 printf ("Failed to check power mode on ata%d\n", num);
265 return 1;
266 } else {
267 /* should be up and running already */
268 return 0;
269 }
270 }
271
272 if (!((status = sata_chk_status (&port[num].ioaddr, 0)) & ATA_DRDY)) {
273 printf ("Device ata%d not ready\n", num);
274 return 1;
275 }
276
277 debug ("Stautus of device check: %d\n", status);
278
279 writeb (0x00, port[num].ioaddr.feature_addr);
280
281 writeb (0x00, port[num].ioaddr.nsect_addr);
282 writeb (0x00, port[num].ioaddr.lbal_addr);
283 writeb (0x00, port[num].ioaddr.lbam_addr);
284 writeb (0x00, port[num].ioaddr.lbah_addr);
285
286 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
287 writeb (ATA_CMD_IDLE, port[num].ioaddr.command_addr);
288
289 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 30000, 0);
290 if ((status & (ATA_BUSY | ATA_ERR))) {
291 printf ("Error waiting for disk spin up: status 0x%02x\n",
292 status);
293 port[num].dev_mask &= ~0x01;
294 return 1;
295 }
296
297 /* Wait for disk to enter Active state */
298 do {
299 msleep (10);
300 status = check_power_mode (num);
301 } while ((status == 0x00) || (status == 0x80));
302
303 if (status == 0x01) {
304 printf ("Falied waiting for disk to spin up\n");
305 return 1;
306 }
307
308 return 0;
309 }
310
311 /* Return value is not the usual here
312 * 0x00 - Device stand by
313 * 0x01 - Operation failed
314 * 0x80 - Device idle
315 * 0xff - Device active
316 */
317 static u8 check_power_mode (int num)
318 {
319 u8 status = 0;
320 u8 res = 0;
321 if (!(port[num].dev_mask & 0x01)) {
322 debug ("Device ata%d is not present\n", num);
323 return 1;
324 }
325
326 if (!(sata_chk_status (&port[num].ioaddr, 0) & ATA_DRDY)) {
327 printf ("Device ata%d not ready\n", num);
328 return 1;
329 }
330
331 writeb (0, port[num].ioaddr.feature_addr);
332 writeb (0, port[num].ioaddr.nsect_addr);
333 writeb (0, port[num].ioaddr.lbal_addr);
334 writeb (0, port[num].ioaddr.lbam_addr);
335 writeb (0, port[num].ioaddr.lbah_addr);
336
337 writeb (ATA_DEVICE_OBS, port[num].ioaddr.device_addr);
338 writeb (ATA_CMD_CHK_POWER, port[num].ioaddr.command_addr);
339
340 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 5000, 0);
341 if ((status & (ATA_BUSY | ATA_ERR))) {
342 printf
343 ("Error waiting for check power mode complete : status 0x%02x\n",
344 status);
345 port[num].dev_mask &= ~0x01;
346 return 1;
347 }
348 res = readb (port[num].ioaddr.nsect_addr);
349 debug ("Check powermode: %d\n", res);
350 return res;
351
352 }
353
354 static void sata_port (struct sata_ioports *ioport)
355 {
356 ioport->data_addr = ioport->cmd_addr + ATA_REG_DATA;
357 ioport->error_addr = ioport->cmd_addr + ATA_REG_ERR;
358 ioport->feature_addr = ioport->cmd_addr + ATA_REG_FEATURE;
359 ioport->nsect_addr = ioport->cmd_addr + ATA_REG_NSECT;
360 ioport->lbal_addr = ioport->cmd_addr + ATA_REG_LBAL;
361 ioport->lbam_addr = ioport->cmd_addr + ATA_REG_LBAM;
362 ioport->lbah_addr = ioport->cmd_addr + ATA_REG_LBAH;
363 ioport->device_addr = ioport->cmd_addr + ATA_REG_DEVICE;
364 ioport->status_addr = ioport->cmd_addr + ATA_REG_STATUS;
365 ioport->command_addr = ioport->cmd_addr + ATA_REG_CMD;
366 }
367
368 static u8 wait_for_irq (int num, unsigned int max)
369 {
370
371 u32 port = iobase[5];
372 switch (num) {
373 case 0:
374 port += VND_TF_CNST_CH0;
375 break;
376 case 1:
377 port += VND_TF_CNST_CH1;
378 break;
379 case 2:
380 port += VND_TF_CNST_CH2;
381 break;
382 case 3:
383 port += VND_TF_CNST_CH3;
384 break;
385 default:
386 return 1;
387 }
388
389 do {
390 if (readl (port) & VND_TF_CNST_INTST) {
391 break;
392 }
393 udelay (1000);
394 max--;
395 } while ((max > 0));
396
397 return (max == 0);
398 }
399
400 static u8 sata_busy_wait (struct sata_ioports *ioaddr, int bits,
401 unsigned int max, u8 usealtstatus)
402 {
403 u8 status;
404
405 do {
406 if (!((status = sata_chk_status (ioaddr, usealtstatus)) & bits)) {
407 break;
408 }
409 udelay (1000);
410 max--;
411 } while ((status & bits) && (max > 0));
412
413 return status;
414 }
415
416 static u8 sata_chk_status (struct sata_ioports *ioaddr, u8 usealtstatus)
417 {
418 if (!usealtstatus) {
419 return readb (ioaddr->status_addr);
420 } else {
421 return readb (ioaddr->altstatus_addr);
422 }
423 }
424
425 static void msleep (int count)
426 {
427 int i;
428
429 for (i = 0; i < count; i++)
430 udelay (1000);
431 }
432
433 /* Read up to 255 sectors
434 *
435 * Returns sectors read
436 */
437 static u8 do_one_read (int device, ulong block, u8 blkcnt, u16 * buff,
438 uchar lba48)
439 {
440
441 u8 sr = 0;
442 u8 status;
443 u64 blknr = (u64) block;
444
445 if (!(sata_chk_status (&port[device].ioaddr, 0) & ATA_DRDY)) {
446 printf ("Device ata%d not ready\n", device);
447 return 0;
448 }
449
450 /* Set up transfer */
451 #ifdef CONFIG_LBA48
452 if (lba48) {
453 /* write high bits */
454 writeb (0, port[device].ioaddr.nsect_addr);
455 writeb ((blknr >> 24) & 0xFF, port[device].ioaddr.lbal_addr);
456 writeb ((blknr >> 32) & 0xFF, port[device].ioaddr.lbam_addr);
457 writeb ((blknr >> 40) & 0xFF, port[device].ioaddr.lbah_addr);
458 }
459 #endif
460 writeb (blkcnt, port[device].ioaddr.nsect_addr);
461 writeb (((blknr) >> 0) & 0xFF, port[device].ioaddr.lbal_addr);
462 writeb ((blknr >> 8) & 0xFF, port[device].ioaddr.lbam_addr);
463 writeb ((blknr >> 16) & 0xFF, port[device].ioaddr.lbah_addr);
464
465 #ifdef CONFIG_LBA48
466 if (lba48) {
467 writeb (ATA_LBA, port[device].ioaddr.device_addr);
468 writeb (ATA_CMD_PIO_READ_EXT, port[device].ioaddr.command_addr);
469 } else
470 #endif
471 {
472 writeb (ATA_LBA | ((blknr >> 24) & 0xF),
473 port[device].ioaddr.device_addr);
474 writeb (ATA_CMD_PIO_READ, port[device].ioaddr.command_addr);
475 }
476
477 status = sata_busy_wait (&port[device].ioaddr, ATA_BUSY, 10000, 1);
478
479 if (status & ATA_BUSY) {
480 u8 err = 0;
481
482 printf ("Device %d not responding status %d\n", device, status);
483 err = readb (port[device].ioaddr.error_addr);
484 printf ("Error reg = 0x%x\n", err);
485
486 return (sr);
487 }
488 while (blkcnt--) {
489
490 if (wait_for_irq (device, 500)) {
491 printf ("ata%u irq failed\n", device);
492 return sr;
493 }
494
495 status = sata_chk_status (&port[device].ioaddr, 0);
496 if (status & ATA_ERR) {
497 printf ("ata%u error %d\n", device,
498 readb (port[device].ioaddr.error_addr));
499 return sr;
500 }
501 /* Read one sector */
502 input_data (&port[device].ioaddr, buff, ATA_SECTOR_WORDS);
503 buff += ATA_SECTOR_WORDS;
504 sr++;
505
506 }
507 return sr;
508 }
509
510 ulong sata_read (int device, ulong block, lbaint_t blkcnt, void *buff)
511 {
512 ulong n = 0, sread;
513 u16 *buffer = (u16 *) buff;
514 u8 status = 0;
515 u64 blknr = (u64) block;
516 unsigned char lba48 = 0;
517
518 #ifdef CONFIG_LBA48
519 if (blknr > 0xfffffff) {
520 if (!sata_dev_desc[device].lba48) {
521 printf ("Drive doesn't support 48-bit addressing\n");
522 return 0;
523 }
524 /* more than 28 bits used, use 48bit mode */
525 lba48 = 1;
526 }
527 #endif
528
529 while (blkcnt > 0) {
530
531 if (blkcnt > 255) {
532 sread = 255;
533 } else {
534 sread = blkcnt;
535 }
536
537 status = do_one_read (device, blknr, sread, buffer, lba48);
538 if (status != sread) {
539 printf ("Read failed\n");
540 return n;
541 }
542
543 blkcnt -= sread;
544 blknr += sread;
545 n += sread;
546 buffer += sread * ATA_SECTOR_WORDS;
547 }
548 return n;
549 }
550
551 ulong sata_write (int device, ulong block, lbaint_t blkcnt, const void *buff)
552 {
553 ulong n = 0;
554 u16 *buffer = (u16 *) buff;
555 unsigned char status = 0, num = 0;
556 u64 blknr = (u64) block;
557 #ifdef CONFIG_LBA48
558 unsigned char lba48 = 0;
559
560 if (blknr > 0xfffffff) {
561 if (!sata_dev_desc[device].lba48) {
562 printf ("Drive doesn't support 48-bit addressing\n");
563 return 0;
564 }
565 /* more than 28 bits used, use 48bit mode */
566 lba48 = 1;
567 }
568 #endif
569 /*Port Number */
570 num = device;
571
572 while (blkcnt-- > 0) {
573 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 500, 0);
574 if (status & ATA_BUSY) {
575 printf ("ata%u failed to respond\n", port[num].port_no);
576 return n;
577 }
578 #ifdef CONFIG_LBA48
579 if (lba48) {
580 /* write high bits */
581 writeb (0, port[num].ioaddr.nsect_addr);
582 writeb ((blknr >> 24) & 0xFF,
583 port[num].ioaddr.lbal_addr);
584 writeb ((blknr >> 32) & 0xFF,
585 port[num].ioaddr.lbam_addr);
586 writeb ((blknr >> 40) & 0xFF,
587 port[num].ioaddr.lbah_addr);
588 }
589 #endif
590 writeb (1, port[num].ioaddr.nsect_addr);
591 writeb ((blknr >> 0) & 0xFF, port[num].ioaddr.lbal_addr);
592 writeb ((blknr >> 8) & 0xFF, port[num].ioaddr.lbam_addr);
593 writeb ((blknr >> 16) & 0xFF, port[num].ioaddr.lbah_addr);
594 #ifdef CONFIG_LBA48
595 if (lba48) {
596 writeb (ATA_LBA, port[num].ioaddr.device_addr);
597 writeb (ATA_CMD_PIO_WRITE_EXT, port[num].ioaddr.command_addr);
598 } else
599 #endif
600 {
601 writeb (ATA_LBA | ((blknr >> 24) & 0xF),
602 port[num].ioaddr.device_addr);
603 writeb (ATA_CMD_PIO_WRITE, port[num].ioaddr.command_addr);
604 }
605
606 msleep (50);
607 /*may take up to 4 sec */
608 status = sata_busy_wait (&port[num].ioaddr, ATA_BUSY, 4000, 0);
609 if ((status & (ATA_DRQ | ATA_BUSY | ATA_ERR)) != ATA_DRQ) {
610 printf ("Error no DRQ dev %d blk %ld: sts 0x%02x\n",
611 device, (ulong) blknr, status);
612 return (n);
613 }
614
615 output_data (&port[num].ioaddr, buffer, ATA_SECTOR_WORDS);
616 readb (port[num].ioaddr.altstatus_addr);
617 udelay (50);
618
619 ++n;
620 ++blknr;
621 buffer += ATA_SECTOR_WORDS;
622 }
623 return n;
624 }
625
626 /* Driver implementation */
627 static u8 sil_get_device_cache_line (pci_dev_t pdev)
628 {
629 u8 cache_line = 0;
630 pci_read_config_byte (pdev, PCI_CACHE_LINE_SIZE, &cache_line);
631 return cache_line;
632 }
633
634 int init_sata (int dev)
635 {
636 static u8 init_done = 0;
637 static int res = 1;
638 pci_dev_t devno;
639 u8 cls = 0;
640 u16 cmd = 0;
641 u32 sconf = 0;
642
643 if (init_done) {
644 return res;
645 }
646
647 init_done = 1;
648
649 if ((devno = pci_find_device (SIL_VEND_ID, SIL3114_DEVICE_ID, 0)) == -1) {
650 res = 1;
651 return res;
652 }
653
654 /* Read out all BARs, even though we only use MMIO from BAR5 */
655 pci_read_config_dword (devno, PCI_BASE_ADDRESS_0, &iobase[0]);
656 pci_read_config_dword (devno, PCI_BASE_ADDRESS_1, &iobase[1]);
657 pci_read_config_dword (devno, PCI_BASE_ADDRESS_2, &iobase[2]);
658 pci_read_config_dword (devno, PCI_BASE_ADDRESS_3, &iobase[3]);
659 pci_read_config_dword (devno, PCI_BASE_ADDRESS_4, &iobase[4]);
660 pci_read_config_dword (devno, PCI_BASE_ADDRESS_5, &iobase[5]);
661
662 if ((iobase[0] == 0xFFFFFFFF) || (iobase[1] == 0xFFFFFFFF) ||
663 (iobase[2] == 0xFFFFFFFF) || (iobase[3] == 0xFFFFFFFF) ||
664 (iobase[4] == 0xFFFFFFFF) || (iobase[5] == 0xFFFFFFFF)) {
665 printf ("Error no base addr for SATA controller\n");
666 res = 1;
667 return res;
668 }
669
670 /* mask off unused bits */
671 iobase[0] &= 0xfffffffc;
672 iobase[1] &= 0xfffffff8;
673 iobase[2] &= 0xfffffffc;
674 iobase[3] &= 0xfffffff8;
675 iobase[4] &= 0xfffffff0;
676 iobase[5] &= 0xfffffc00;
677
678 /* from sata_sil in Linux kernel */
679 cls = sil_get_device_cache_line (devno);
680 if (cls) {
681 cls >>= 3;
682 cls++; /* cls = (line_size/8)+1 */
683 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH0);
684 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH1);
685 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH2);
686 writel (cls << 8 | cls, iobase[5] + VND_FIFOCFG_CH3);
687 } else {
688 printf ("Cache line not set. Driver may not function\n");
689 }
690
691 /* Enable operation */
692 pci_read_config_word (devno, PCI_COMMAND, &cmd);
693 cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
694 pci_write_config_word (devno, PCI_COMMAND, cmd);
695
696 /* Disable interrupt usage */
697 pci_read_config_dword (devno, VND_SYSCONFSTAT, &sconf);
698 sconf |= (VND_SYSCONFSTAT_CHN_0_INTBLOCK | VND_SYSCONFSTAT_CHN_1_INTBLOCK);
699 pci_write_config_dword (devno, VND_SYSCONFSTAT, sconf);
700
701 res = 0;
702 return res;
703 }
704
705 /* Check if device is connected to port */
706 int sata_bus_probe (int portno)
707 {
708 u32 port = iobase[5];
709 u32 val;
710 switch (portno) {
711 case 0:
712 port += VND_SSTATUS_CH0;
713 break;
714 case 1:
715 port += VND_SSTATUS_CH1;
716 break;
717 case 2:
718 port += VND_SSTATUS_CH2;
719 break;
720 case 3:
721 port += VND_SSTATUS_CH3;
722 break;
723 default:
724 return 0;
725 }
726 val = readl (port);
727 if ((val & SATA_DET_PRES) == SATA_DET_PRES) {
728 return 1;
729 } else {
730 return 0;
731 }
732 }
733
734 int sata_phy_reset (int portno)
735 {
736 u32 port = iobase[5];
737 u32 val;
738 switch (portno) {
739 case 0:
740 port += VND_SCONTROL_CH0;
741 break;
742 case 1:
743 port += VND_SCONTROL_CH1;
744 break;
745 case 2:
746 port += VND_SCONTROL_CH2;
747 break;
748 case 3:
749 port += VND_SCONTROL_CH3;
750 break;
751 default:
752 return 0;
753 }
754 val = readl (port);
755 writel (val | SATA_SC_DET_RST, port);
756 msleep (150);
757 writel (val & ~SATA_SC_DET_RST, port);
758 return 0;
759 }
760
761 int scan_sata (int dev)
762 {
763 /* A bit brain dead, but the code has a legacy */
764 switch (dev) {
765 case 0:
766 port[0].port_no = 0;
767 port[0].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH0;
768 port[0].ioaddr.altstatus_addr = port[0].ioaddr.ctl_addr =
769 (iobase[5] + VND_TF2_CH0) | ATA_PCI_CTL_OFS;
770 port[0].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH0;
771 break;
772 #if (CONFIG_SYS_SATA_MAX_DEVICE >= 1)
773 case 1:
774 port[1].port_no = 0;
775 port[1].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH1;
776 port[1].ioaddr.altstatus_addr = port[1].ioaddr.ctl_addr =
777 (iobase[5] + VND_TF2_CH1) | ATA_PCI_CTL_OFS;
778 port[1].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH1;
779 break;
780 #elif (CONFIG_SYS_SATA_MAX_DEVICE >= 2)
781 case 2:
782 port[2].port_no = 0;
783 port[2].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH2;
784 port[2].ioaddr.altstatus_addr = port[2].ioaddr.ctl_addr =
785 (iobase[5] + VND_TF2_CH2) | ATA_PCI_CTL_OFS;
786 port[2].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH2;
787 break;
788 #elif (CONFIG_SYS_SATA_MAX_DEVICE >= 3)
789 case 3:
790 port[3].port_no = 0;
791 port[3].ioaddr.cmd_addr = iobase[5] + VND_TF0_CH3;
792 port[3].ioaddr.altstatus_addr = port[3].ioaddr.ctl_addr =
793 (iobase[5] + VND_TF2_CH3) | ATA_PCI_CTL_OFS;
794 port[3].ioaddr.bmdma_addr = iobase[5] + VND_BMDMA_CH3;
795 break;
796 #endif
797 default:
798 printf ("Tried to scan unknown port: ata%d\n", dev);
799 return 1;
800 }
801
802 /* Initialize other registers */
803 sata_port (&port[dev].ioaddr);
804
805 /* Check for attached device */
806 if (!sata_bus_probe (dev)) {
807 port[dev].port_state = 0;
808 debug ("SATA#%d port is not present\n", dev);
809 } else {
810 debug ("SATA#%d port is present\n", dev);
811 if (sata_bus_softreset (dev)) {
812 /* soft reset failed, try a hard one */
813 sata_phy_reset (dev);
814 if (sata_bus_softreset (dev)) {
815 port[dev].port_state = 0;
816 } else {
817 port[dev].port_state = 1;
818 }
819 } else {
820 port[dev].port_state = 1;
821 }
822 }
823 if (port[dev].port_state == 1) {
824 /* Probe device and set xfer mode */
825 sata_identify (dev, 0);
826 set_Feature_cmd (dev, 0);
827 }
828
829 return 0;
830 }
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