2 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
3 * Terry Lv <r65388@freescale.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
30 #include <linux/ctype.h>
31 #include <asm/errno.h>
33 #include <linux/bitops.h>
34 #include <asm/arch/clock.h>
35 #include "dwc_ahsata.h"
37 struct sata_port_regs {
61 struct sata_host_regs {
90 #define MAX_DATA_BYTES_PER_SG (4 * 1024 * 1024)
91 #define MAX_BYTES_PER_TRANS (AHCI_MAX_SG * MAX_DATA_BYTES_PER_SG)
93 #define writel_with_flush(a, b) do { writel(a, b); readl(b); } while (0)
97 static inline u32 ahci_port_base(u32 base, u32 port)
99 return base + 0x100 + (port * 0x80);
102 static int waiting_for_cmd_completed(u8 *offset,
110 ((status = readl(offset)) & sign) && i < timeout_msec;
114 return (i < timeout_msec) ? 0 : -1;
117 static int ahci_setup_oobr(struct ahci_probe_ent *probe_ent,
120 struct sata_host_regs *host_mmio =
121 (struct sata_host_regs *)probe_ent->mmio_base;
123 writel(SATA_HOST_OOBR_WE, &(host_mmio->oobr));
124 writel(0x02060b14, &(host_mmio->oobr));
129 static int ahci_host_init(struct ahci_probe_ent *probe_ent)
131 u32 tmp, cap_save, num_ports;
132 int i, j, timeout = 1000;
133 struct sata_port_regs *port_mmio = NULL;
134 struct sata_host_regs *host_mmio =
135 (struct sata_host_regs *)probe_ent->mmio_base;
136 int clk = mxc_get_clock(MXC_SATA_CLK);
138 cap_save = readl(&(host_mmio->cap));
139 cap_save |= SATA_HOST_CAP_SSS;
141 /* global controller reset */
142 tmp = readl(&(host_mmio->ghc));
143 if ((tmp & SATA_HOST_GHC_HR) == 0)
144 writel_with_flush(tmp | SATA_HOST_GHC_HR, &(host_mmio->ghc));
146 while ((readl(&(host_mmio->ghc)) & SATA_HOST_GHC_HR)
151 debug("controller reset failed (0x%x)\n", tmp);
156 writel(clk / 1000, &(host_mmio->timer1ms));
158 ahci_setup_oobr(probe_ent, 0);
160 writel_with_flush(SATA_HOST_GHC_AE, &(host_mmio->ghc));
161 writel(cap_save, &(host_mmio->cap));
162 num_ports = (cap_save & SATA_HOST_CAP_NP_MASK) + 1;
163 writel_with_flush((1 << num_ports) - 1,
167 * Determine which Ports are implemented by the DWC_ahsata,
168 * by reading the PI register. This bit map value aids the
169 * software to determine how many Ports are available and
170 * which Port registers need to be initialized.
172 probe_ent->cap = readl(&(host_mmio->cap));
173 probe_ent->port_map = readl(&(host_mmio->pi));
175 /* Determine how many command slots the HBA supports */
177 (probe_ent->cap & SATA_HOST_CAP_NP_MASK) + 1;
179 debug("cap 0x%x port_map 0x%x n_ports %d\n",
180 probe_ent->cap, probe_ent->port_map, probe_ent->n_ports);
182 for (i = 0; i < probe_ent->n_ports; i++) {
183 probe_ent->port[i].port_mmio =
184 ahci_port_base((u32)host_mmio, i);
186 (struct sata_port_regs *)probe_ent->port[i].port_mmio;
188 /* Ensure that the DWC_ahsata is in idle state */
189 tmp = readl(&(port_mmio->cmd));
192 * When P#CMD.ST, P#CMD.CR, P#CMD.FRE and P#CMD.FR
193 * are all cleared, the Port is in an idle state.
195 if (tmp & (SATA_PORT_CMD_CR | SATA_PORT_CMD_FR |
196 SATA_PORT_CMD_FRE | SATA_PORT_CMD_ST)) {
199 * System software places a Port into the idle state by
200 * clearing P#CMD.ST and waiting for P#CMD.CR to return
203 tmp &= ~SATA_PORT_CMD_ST;
204 writel_with_flush(tmp, &(port_mmio->cmd));
207 * spec says 500 msecs for each bit, so
208 * this is slightly incorrect.
213 while ((readl(&(port_mmio->cmd)) & SATA_PORT_CMD_CR)
218 debug("port reset failed (0x%x)\n", tmp);
224 tmp = readl(&(port_mmio->cmd));
225 writel((tmp | SATA_PORT_CMD_SUD), &(port_mmio->cmd));
227 /* Wait for spin-up to finish */
229 while (!(readl(&(port_mmio->cmd)) | SATA_PORT_CMD_SUD)
233 debug("Spin-Up can't finish!\n");
237 for (j = 0; j < 100; ++j) {
239 tmp = readl(&(port_mmio->ssts));
240 if (((tmp & SATA_PORT_SSTS_DET_MASK) == 0x3) ||
241 ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x1))
245 /* Wait for COMINIT bit 26 (DIAG_X) in SERR */
247 while (!(readl(&(port_mmio->serr)) | SATA_PORT_SERR_DIAG_X)
251 debug("Can't find DIAG_X set!\n");
256 * For each implemented Port, clear the P#SERR
257 * register, by writing ones to each implemented\
260 tmp = readl(&(port_mmio->serr));
261 debug("P#SERR 0x%x\n",
263 writel(tmp, &(port_mmio->serr));
265 /* Ack any pending irq events for this port */
266 tmp = readl(&(host_mmio->is));
267 debug("IS 0x%x\n", tmp);
269 writel(tmp, &(host_mmio->is));
271 writel(1 << i, &(host_mmio->is));
273 /* set irq mask (enables interrupts) */
274 writel(DEF_PORT_IRQ, &(port_mmio->ie));
276 /* register linkup ports */
277 tmp = readl(&(port_mmio->ssts));
278 debug("Port %d status: 0x%x\n", i, tmp);
279 if ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x03)
280 probe_ent->link_port_map |= (0x01 << i);
283 tmp = readl(&(host_mmio->ghc));
284 debug("GHC 0x%x\n", tmp);
285 writel(tmp | SATA_HOST_GHC_IE, &(host_mmio->ghc));
286 tmp = readl(&(host_mmio->ghc));
287 debug("GHC 0x%x\n", tmp);
292 static void ahci_print_info(struct ahci_probe_ent *probe_ent)
294 struct sata_host_regs *host_mmio =
295 (struct sata_host_regs *)probe_ent->mmio_base;
296 u32 vers, cap, impl, speed;
300 vers = readl(&(host_mmio->vs));
301 cap = probe_ent->cap;
302 impl = probe_ent->port_map;
304 speed = (cap & SATA_HOST_CAP_ISS_MASK)
305 >> SATA_HOST_CAP_ISS_OFFSET;
315 printf("AHCI %02x%02x.%02x%02x "
316 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
321 ((cap >> 8) & 0x1f) + 1,
330 cap & (1 << 31) ? "64bit " : "",
331 cap & (1 << 30) ? "ncq " : "",
332 cap & (1 << 28) ? "ilck " : "",
333 cap & (1 << 27) ? "stag " : "",
334 cap & (1 << 26) ? "pm " : "",
335 cap & (1 << 25) ? "led " : "",
336 cap & (1 << 24) ? "clo " : "",
337 cap & (1 << 19) ? "nz " : "",
338 cap & (1 << 18) ? "only " : "",
339 cap & (1 << 17) ? "pmp " : "",
340 cap & (1 << 15) ? "pio " : "",
341 cap & (1 << 14) ? "slum " : "",
342 cap & (1 << 13) ? "part " : "");
345 static int ahci_init_one(int pdev)
348 struct ahci_probe_ent *probe_ent = NULL;
350 probe_ent = malloc(sizeof(struct ahci_probe_ent));
351 memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
352 probe_ent->dev = pdev;
354 probe_ent->host_flags = ATA_FLAG_SATA
360 probe_ent->mmio_base = CONFIG_DWC_AHSATA_BASE_ADDR;
362 /* initialize adapter */
363 rc = ahci_host_init(probe_ent);
367 ahci_print_info(probe_ent);
369 /* Save the private struct to block device struct */
370 sata_dev_desc[pdev].priv = (void *)probe_ent;
378 static int ahci_fill_sg(struct ahci_probe_ent *probe_ent,
379 u8 port, unsigned char *buf, int buf_len)
381 struct ahci_ioports *pp = &(probe_ent->port[port]);
382 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
383 u32 sg_count, max_bytes;
386 max_bytes = MAX_DATA_BYTES_PER_SG;
387 sg_count = ((buf_len - 1) / max_bytes) + 1;
388 if (sg_count > AHCI_MAX_SG) {
389 printf("Error:Too much sg!\n");
393 for (i = 0; i < sg_count; i++) {
395 cpu_to_le32((u32)buf + i * max_bytes);
396 ahci_sg->addr_hi = 0;
397 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
402 buf_len -= max_bytes;
408 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 cmd_slot, u32 opts)
410 struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)(pp->cmd_slot +
411 AHCI_CMD_SLOT_SZ * cmd_slot);
413 memset(cmd_hdr, 0, AHCI_CMD_SLOT_SZ);
414 cmd_hdr->opts = cpu_to_le32(opts);
416 cmd_hdr->tbl_addr = cpu_to_le32(pp->cmd_tbl & 0xffffffff);
417 cmd_hdr->tbl_addr_hi = 0;
420 #define AHCI_GET_CMD_SLOT(c) ((c) ? ffs(c) : 0)
422 static int ahci_exec_ata_cmd(struct ahci_probe_ent *probe_ent,
423 u8 port, struct sata_fis_h2d *cfis,
424 u8 *buf, u32 buf_len, s32 is_write)
426 struct ahci_ioports *pp = &(probe_ent->port[port]);
427 struct sata_port_regs *port_mmio =
428 (struct sata_port_regs *)pp->port_mmio;
430 int sg_count = 0, cmd_slot = 0;
432 cmd_slot = AHCI_GET_CMD_SLOT(readl(&(port_mmio->ci)));
433 if (32 == cmd_slot) {
434 printf("Can't find empty command slot!\n");
438 /* Check xfer length */
439 if (buf_len > MAX_BYTES_PER_TRANS) {
440 printf("Max transfer length is %dB\n\r",
441 MAX_BYTES_PER_TRANS);
445 memcpy((u8 *)(pp->cmd_tbl), cfis, sizeof(struct sata_fis_h2d));
447 sg_count = ahci_fill_sg(probe_ent, port, buf, buf_len);
448 opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16);
451 ahci_fill_cmd_slot(pp, cmd_slot, opts);
453 writel_with_flush(1 << cmd_slot, &(port_mmio->ci));
455 if (waiting_for_cmd_completed((u8 *)&(port_mmio->ci),
456 10000, 0x1 << cmd_slot)) {
457 printf("timeout exit!\n");
460 debug("ahci_exec_ata_cmd: %d byte transferred.\n",
461 pp->cmd_slot->status);
466 static void ahci_set_feature(u8 dev, u8 port)
468 struct ahci_probe_ent *probe_ent =
469 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
470 struct sata_fis_h2d h2d, *cfis = &h2d;
472 memset(cfis, 0, sizeof(struct sata_fis_h2d));
473 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
474 cfis->pm_port_c = 1 << 7;
475 cfis->command = ATA_CMD_SET_FEATURES;
476 cfis->features = SETFEATURES_XFER;
477 cfis->sector_count = ffs(probe_ent->udma_mask + 1) + 0x3e;
479 ahci_exec_ata_cmd(probe_ent, port, cfis, NULL, 0, READ_CMD);
482 static int ahci_port_start(struct ahci_probe_ent *probe_ent,
485 struct ahci_ioports *pp = &(probe_ent->port[port]);
486 struct sata_port_regs *port_mmio =
487 (struct sata_port_regs *)pp->port_mmio;
490 int timeout = 10000000;
492 debug("Enter start port: %d\n", port);
493 port_status = readl(&(port_mmio->ssts));
494 debug("Port %d status: %x\n", port, port_status);
495 if ((port_status & 0xf) != 0x03) {
496 printf("No Link on this port!\n");
500 mem = (u32)malloc(AHCI_PORT_PRIV_DMA_SZ + 1024);
503 printf("No mem for table!\n");
507 mem = (mem + 0x400) & (~0x3ff); /* Aligned to 1024-bytes */
508 memset((u8 *)mem, 0, AHCI_PORT_PRIV_DMA_SZ);
511 * First item in chunk of DMA memory: 32-slot command table,
512 * 32 bytes each in size
514 pp->cmd_slot = (struct ahci_cmd_hdr *)mem;
515 debug("cmd_slot = 0x%x\n", (unsigned int) pp->cmd_slot);
516 mem += (AHCI_CMD_SLOT_SZ * DWC_AHSATA_MAX_CMD_SLOTS);
519 * Second item: Received-FIS area, 256-Byte aligned
522 mem += AHCI_RX_FIS_SZ;
525 * Third item: data area for storing a single command
526 * and its scatter-gather table
529 debug("cmd_tbl_dma = 0x%x\n", pp->cmd_tbl);
531 mem += AHCI_CMD_TBL_HDR;
533 writel_with_flush(0x00004444, &(port_mmio->dmacr));
534 pp->cmd_tbl_sg = (struct ahci_sg *)mem;
535 writel_with_flush((u32)pp->cmd_slot, &(port_mmio->clb));
536 writel_with_flush(pp->rx_fis, &(port_mmio->fb));
539 writel_with_flush((SATA_PORT_CMD_FRE | readl(&(port_mmio->cmd))),
542 /* Wait device ready */
543 while ((readl(&(port_mmio->tfd)) & (SATA_PORT_TFD_STS_ERR |
544 SATA_PORT_TFD_STS_DRQ | SATA_PORT_TFD_STS_BSY))
548 debug("Device not ready for BSY, DRQ and"
553 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
554 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
555 PORT_CMD_START, &(port_mmio->cmd));
557 debug("Exit start port %d\n", port);
562 int init_sata(int dev)
566 struct ahci_probe_ent *probe_ent = NULL;
568 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
569 printf("The sata index %d is out of ranges\n\r", dev);
575 probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
576 linkmap = probe_ent->link_port_map;
579 printf("No port device detected!\n");
583 for (i = 0; i < probe_ent->n_ports; i++) {
584 if ((linkmap >> i) && ((linkmap >> i) & 0x01)) {
585 if (ahci_port_start(probe_ent, (u8)i)) {
586 printf("Can not start port %d\n", i);
589 probe_ent->hard_port_no = i;
597 static void dwc_ahsata_print_info(int dev)
599 block_dev_desc_t *pdev = &(sata_dev_desc[dev]);
601 printf("SATA Device Info:\n\r");
602 #ifdef CONFIG_SYS_64BIT_LBA
603 printf("S/N: %s\n\rProduct model number: %s\n\r"
604 "Firmware version: %s\n\rCapacity: %lld sectors\n\r",
605 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
607 printf("S/N: %s\n\rProduct model number: %s\n\r"
608 "Firmware version: %s\n\rCapacity: %ld sectors\n\r",
609 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
613 static void dwc_ahsata_identify(int dev, u16 *id)
615 struct ahci_probe_ent *probe_ent =
616 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
617 struct sata_fis_h2d h2d, *cfis = &h2d;
618 u8 port = probe_ent->hard_port_no;
620 memset(cfis, 0, sizeof(struct sata_fis_h2d));
622 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
623 cfis->pm_port_c = 0x80; /* is command */
624 cfis->command = ATA_CMD_ID_ATA;
626 ahci_exec_ata_cmd(probe_ent, port, cfis,
627 (u8 *)id, ATA_ID_WORDS * 2, READ_CMD);
628 ata_swap_buf_le16(id, ATA_ID_WORDS);
631 static void dwc_ahsata_xfer_mode(int dev, u16 *id)
633 struct ahci_probe_ent *probe_ent =
634 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
636 probe_ent->pio_mask = id[ATA_ID_PIO_MODES];
637 probe_ent->udma_mask = id[ATA_ID_UDMA_MODES];
638 debug("pio %04x, udma %04x\n\r",
639 probe_ent->pio_mask, probe_ent->udma_mask);
642 static u32 dwc_ahsata_rw_cmd(int dev, u32 start, u32 blkcnt,
643 u8 *buffer, int is_write)
645 struct ahci_probe_ent *probe_ent =
646 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
647 struct sata_fis_h2d h2d, *cfis = &h2d;
648 u8 port = probe_ent->hard_port_no;
653 memset(cfis, 0, sizeof(struct sata_fis_h2d));
655 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
656 cfis->pm_port_c = 0x80; /* is command */
657 cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ;
658 cfis->device = ATA_LBA;
660 cfis->device |= (block >> 24) & 0xf;
661 cfis->lba_high = (block >> 16) & 0xff;
662 cfis->lba_mid = (block >> 8) & 0xff;
663 cfis->lba_low = block & 0xff;
664 cfis->sector_count = (u8)(blkcnt & 0xff);
666 if (ahci_exec_ata_cmd(probe_ent, port, cfis,
667 buffer, ATA_SECT_SIZE * blkcnt, is_write) > 0)
673 void dwc_ahsata_flush_cache(int dev)
675 struct ahci_probe_ent *probe_ent =
676 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
677 struct sata_fis_h2d h2d, *cfis = &h2d;
678 u8 port = probe_ent->hard_port_no;
680 memset(cfis, 0, sizeof(struct sata_fis_h2d));
682 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
683 cfis->pm_port_c = 0x80; /* is command */
684 cfis->command = ATA_CMD_FLUSH;
686 ahci_exec_ata_cmd(probe_ent, port, cfis, NULL, 0, 0);
689 static u32 dwc_ahsata_rw_cmd_ext(int dev, u32 start, lbaint_t blkcnt,
690 u8 *buffer, int is_write)
692 struct ahci_probe_ent *probe_ent =
693 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
694 struct sata_fis_h2d h2d, *cfis = &h2d;
695 u8 port = probe_ent->hard_port_no;
700 memset(cfis, 0, sizeof(struct sata_fis_h2d));
702 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
703 cfis->pm_port_c = 0x80; /* is command */
705 cfis->command = (is_write) ? ATA_CMD_WRITE_EXT
708 cfis->lba_high_exp = (block >> 40) & 0xff;
709 cfis->lba_mid_exp = (block >> 32) & 0xff;
710 cfis->lba_low_exp = (block >> 24) & 0xff;
711 cfis->lba_high = (block >> 16) & 0xff;
712 cfis->lba_mid = (block >> 8) & 0xff;
713 cfis->lba_low = block & 0xff;
714 cfis->device = ATA_LBA;
715 cfis->sector_count_exp = (blkcnt >> 8) & 0xff;
716 cfis->sector_count = blkcnt & 0xff;
718 if (ahci_exec_ata_cmd(probe_ent, port, cfis, buffer,
719 ATA_SECT_SIZE * blkcnt, is_write) > 0)
725 u32 dwc_ahsata_rw_ncq_cmd(int dev, u32 start, lbaint_t blkcnt,
726 u8 *buffer, int is_write)
728 struct ahci_probe_ent *probe_ent =
729 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
730 struct sata_fis_h2d h2d, *cfis = &h2d;
731 u8 port = probe_ent->hard_port_no;
734 if (sata_dev_desc[dev].lba48 != 1) {
735 printf("execute FPDMA command on non-LBA48 hard disk\n\r");
741 memset(cfis, 0, sizeof(struct sata_fis_h2d));
743 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
744 cfis->pm_port_c = 0x80; /* is command */
746 cfis->command = (is_write) ? ATA_CMD_FPDMA_WRITE
747 : ATA_CMD_FPDMA_READ;
749 cfis->lba_high_exp = (block >> 40) & 0xff;
750 cfis->lba_mid_exp = (block >> 32) & 0xff;
751 cfis->lba_low_exp = (block >> 24) & 0xff;
752 cfis->lba_high = (block >> 16) & 0xff;
753 cfis->lba_mid = (block >> 8) & 0xff;
754 cfis->lba_low = block & 0xff;
756 cfis->device = ATA_LBA;
757 cfis->features_exp = (blkcnt >> 8) & 0xff;
758 cfis->features = blkcnt & 0xff;
760 /* Use the latest queue */
761 ahci_exec_ata_cmd(probe_ent, port, cfis,
762 buffer, ATA_SECT_SIZE * blkcnt, is_write);
767 void dwc_ahsata_flush_cache_ext(int dev)
769 struct ahci_probe_ent *probe_ent =
770 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
771 struct sata_fis_h2d h2d, *cfis = &h2d;
772 u8 port = probe_ent->hard_port_no;
774 memset(cfis, 0, sizeof(struct sata_fis_h2d));
776 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
777 cfis->pm_port_c = 0x80; /* is command */
778 cfis->command = ATA_CMD_FLUSH_EXT;
780 ahci_exec_ata_cmd(probe_ent, port, cfis, NULL, 0, 0);
783 static void dwc_ahsata_init_wcache(int dev, u16 *id)
785 struct ahci_probe_ent *probe_ent =
786 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
788 if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
789 probe_ent->flags |= SATA_FLAG_WCACHE;
790 if (ata_id_has_flush(id))
791 probe_ent->flags |= SATA_FLAG_FLUSH;
792 if (ata_id_has_flush_ext(id))
793 probe_ent->flags |= SATA_FLAG_FLUSH_EXT;
796 u32 ata_low_level_rw_lba48(int dev, u32 blknr, lbaint_t blkcnt,
797 void *buffer, int is_write)
807 max_blks = ATA_MAX_SECTORS_LBA48;
810 if (blks > max_blks) {
811 if (max_blks != dwc_ahsata_rw_cmd_ext(dev, start,
812 max_blks, addr, is_write))
816 addr += ATA_SECT_SIZE * max_blks;
818 if (blks != dwc_ahsata_rw_cmd_ext(dev, start,
819 blks, addr, is_write))
823 addr += ATA_SECT_SIZE * blks;
830 u32 ata_low_level_rw_lba28(int dev, u32 blknr, lbaint_t blkcnt,
831 void *buffer, int is_write)
841 max_blks = ATA_MAX_SECTORS;
843 if (blks > max_blks) {
844 if (max_blks != dwc_ahsata_rw_cmd(dev, start,
845 max_blks, addr, is_write))
849 addr += ATA_SECT_SIZE * max_blks;
851 if (blks != dwc_ahsata_rw_cmd(dev, start,
852 blks, addr, is_write))
856 addr += ATA_SECT_SIZE * blks;
864 * SATA interface between low level driver and command layer
866 ulong sata_read(int dev, unsigned long blknr, lbaint_t blkcnt, void *buffer)
870 if (sata_dev_desc[dev].lba48)
871 rc = ata_low_level_rw_lba48(dev, blknr, blkcnt,
874 rc = ata_low_level_rw_lba28(dev, blknr, blkcnt,
879 ulong sata_write(int dev, unsigned long blknr, lbaint_t blkcnt, void *buffer)
882 struct ahci_probe_ent *probe_ent =
883 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
884 u32 flags = probe_ent->flags;
886 if (sata_dev_desc[dev].lba48) {
887 rc = ata_low_level_rw_lba48(dev, blknr, blkcnt,
889 if ((flags & SATA_FLAG_WCACHE) &&
890 (flags & SATA_FLAG_FLUSH_EXT))
891 dwc_ahsata_flush_cache_ext(dev);
893 rc = ata_low_level_rw_lba28(dev, blknr, blkcnt,
895 if ((flags & SATA_FLAG_WCACHE) &&
896 (flags & SATA_FLAG_FLUSH))
897 dwc_ahsata_flush_cache(dev);
902 int scan_sata(int dev)
904 u8 serial[ATA_ID_SERNO_LEN + 1] = { 0 };
905 u8 firmware[ATA_ID_FW_REV_LEN + 1] = { 0 };
906 u8 product[ATA_ID_PROD_LEN + 1] = { 0 };
909 struct ahci_probe_ent *probe_ent =
910 (struct ahci_probe_ent *)sata_dev_desc[dev].priv;
911 u8 port = probe_ent->hard_port_no;
912 block_dev_desc_t *pdev = &(sata_dev_desc[dev]);
914 id = (u16 *)malloc(ATA_ID_WORDS * 2);
916 printf("id malloc failed\n\r");
920 /* Identify device to get information */
921 dwc_ahsata_identify(dev, id);
924 ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
925 memcpy(pdev->product, serial, sizeof(serial));
927 /* Firmware version */
928 ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
929 memcpy(pdev->revision, firmware, sizeof(firmware));
932 ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
933 memcpy(pdev->vendor, product, sizeof(product));
936 n_sectors = ata_id_n_sectors(id);
937 pdev->lba = (u32)n_sectors;
939 pdev->type = DEV_TYPE_HARDDISK;
940 pdev->blksz = ATA_SECT_SIZE;
943 /* Check if support LBA48 */
944 if (ata_id_has_lba48(id)) {
946 debug("Device support LBA48\n\r");
949 /* Get the NCQ queue depth from device */
950 probe_ent->flags &= (~SATA_FLAG_Q_DEP_MASK);
951 probe_ent->flags |= ata_id_queue_depth(id);
953 /* Get the xfer mode from device */
954 dwc_ahsata_xfer_mode(dev, id);
956 /* Get the write cache status from device */
957 dwc_ahsata_init_wcache(dev, id);
959 /* Set the xfer mode to highest speed */
960 ahci_set_feature(dev, port);
964 dwc_ahsata_print_info(dev);