2 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
3 * Terry Lv <r65388@freescale.com>
5 * SPDX-License-Identifier: GPL-2.0+
15 #include <linux/ctype.h>
16 #include <linux/errno.h>
18 #include <linux/bitops.h>
19 #include <asm/arch/clock.h>
20 #include <asm/arch/sys_proto.h>
21 #include "dwc_ahsata.h"
23 struct sata_port_regs {
47 struct sata_host_regs {
76 #define MAX_DATA_BYTES_PER_SG (4 * 1024 * 1024)
77 #define MAX_BYTES_PER_TRANS (AHCI_MAX_SG * MAX_DATA_BYTES_PER_SG)
79 #define writel_with_flush(a, b) do { writel(a, b); readl(b); } while (0)
83 static inline void __iomem *ahci_port_base(void __iomem *base, u32 port)
85 return base + 0x100 + (port * 0x80);
88 static int waiting_for_cmd_completed(u8 *offset,
96 ((status = readl(offset)) & sign) && i < timeout_msec;
100 return (i < timeout_msec) ? 0 : -1;
103 static int ahci_setup_oobr(struct ahci_uc_priv *uc_priv, int clk)
105 struct sata_host_regs *host_mmio = uc_priv->mmio_base;
107 writel(SATA_HOST_OOBR_WE, &host_mmio->oobr);
108 writel(0x02060b14, &host_mmio->oobr);
113 static int ahci_host_init(struct ahci_uc_priv *uc_priv)
115 u32 tmp, cap_save, num_ports;
116 int i, j, timeout = 1000;
117 struct sata_port_regs *port_mmio = NULL;
118 struct sata_host_regs *host_mmio = uc_priv->mmio_base;
119 int clk = mxc_get_clock(MXC_SATA_CLK);
121 cap_save = readl(&host_mmio->cap);
122 cap_save |= SATA_HOST_CAP_SSS;
124 /* global controller reset */
125 tmp = readl(&host_mmio->ghc);
126 if ((tmp & SATA_HOST_GHC_HR) == 0)
127 writel_with_flush(tmp | SATA_HOST_GHC_HR, &host_mmio->ghc);
129 while ((readl(&host_mmio->ghc) & SATA_HOST_GHC_HR) && --timeout)
133 debug("controller reset failed (0x%x)\n", tmp);
138 writel(clk / 1000, &host_mmio->timer1ms);
140 ahci_setup_oobr(uc_priv, 0);
142 writel_with_flush(SATA_HOST_GHC_AE, &host_mmio->ghc);
143 writel(cap_save, &host_mmio->cap);
144 num_ports = (cap_save & SATA_HOST_CAP_NP_MASK) + 1;
145 writel_with_flush((1 << num_ports) - 1, &host_mmio->pi);
148 * Determine which Ports are implemented by the DWC_ahsata,
149 * by reading the PI register. This bit map value aids the
150 * software to determine how many Ports are available and
151 * which Port registers need to be initialized.
153 uc_priv->cap = readl(&host_mmio->cap);
154 uc_priv->port_map = readl(&host_mmio->pi);
156 /* Determine how many command slots the HBA supports */
157 uc_priv->n_ports = (uc_priv->cap & SATA_HOST_CAP_NP_MASK) + 1;
159 debug("cap 0x%x port_map 0x%x n_ports %d\n",
160 uc_priv->cap, uc_priv->port_map, uc_priv->n_ports);
162 for (i = 0; i < uc_priv->n_ports; i++) {
163 uc_priv->port[i].port_mmio = ahci_port_base(host_mmio, i);
164 port_mmio = uc_priv->port[i].port_mmio;
166 /* Ensure that the DWC_ahsata is in idle state */
167 tmp = readl(&port_mmio->cmd);
170 * When P#CMD.ST, P#CMD.CR, P#CMD.FRE and P#CMD.FR
171 * are all cleared, the Port is in an idle state.
173 if (tmp & (SATA_PORT_CMD_CR | SATA_PORT_CMD_FR |
174 SATA_PORT_CMD_FRE | SATA_PORT_CMD_ST)) {
177 * System software places a Port into the idle state by
178 * clearing P#CMD.ST and waiting for P#CMD.CR to return
181 tmp &= ~SATA_PORT_CMD_ST;
182 writel_with_flush(tmp, &port_mmio->cmd);
185 * spec says 500 msecs for each bit, so
186 * this is slightly incorrect.
191 while ((readl(&port_mmio->cmd) & SATA_PORT_CMD_CR)
196 debug("port reset failed (0x%x)\n", tmp);
202 tmp = readl(&port_mmio->cmd);
203 writel((tmp | SATA_PORT_CMD_SUD), &port_mmio->cmd);
205 /* Wait for spin-up to finish */
207 while (!(readl(&port_mmio->cmd) | SATA_PORT_CMD_SUD)
211 debug("Spin-Up can't finish!\n");
215 for (j = 0; j < 100; ++j) {
217 tmp = readl(&port_mmio->ssts);
218 if (((tmp & SATA_PORT_SSTS_DET_MASK) == 0x3) ||
219 ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x1))
223 /* Wait for COMINIT bit 26 (DIAG_X) in SERR */
225 while (!(readl(&port_mmio->serr) | SATA_PORT_SERR_DIAG_X)
229 debug("Can't find DIAG_X set!\n");
234 * For each implemented Port, clear the P#SERR
235 * register, by writing ones to each implemented\
238 tmp = readl(&port_mmio->serr);
239 debug("P#SERR 0x%x\n",
241 writel(tmp, &port_mmio->serr);
243 /* Ack any pending irq events for this port */
244 tmp = readl(&host_mmio->is);
245 debug("IS 0x%x\n", tmp);
247 writel(tmp, &host_mmio->is);
249 writel(1 << i, &host_mmio->is);
251 /* set irq mask (enables interrupts) */
252 writel(DEF_PORT_IRQ, &port_mmio->ie);
254 /* register linkup ports */
255 tmp = readl(&port_mmio->ssts);
256 debug("Port %d status: 0x%x\n", i, tmp);
257 if ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x03)
258 uc_priv->link_port_map |= (0x01 << i);
261 tmp = readl(&host_mmio->ghc);
262 debug("GHC 0x%x\n", tmp);
263 writel(tmp | SATA_HOST_GHC_IE, &host_mmio->ghc);
264 tmp = readl(&host_mmio->ghc);
265 debug("GHC 0x%x\n", tmp);
270 static void ahci_print_info(struct ahci_uc_priv *uc_priv)
272 struct sata_host_regs *host_mmio = uc_priv->mmio_base;
273 u32 vers, cap, impl, speed;
277 vers = readl(&host_mmio->vs);
279 impl = uc_priv->port_map;
281 speed = (cap & SATA_HOST_CAP_ISS_MASK)
282 >> SATA_HOST_CAP_ISS_OFFSET;
292 printf("AHCI %02x%02x.%02x%02x "
293 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
298 ((cap >> 8) & 0x1f) + 1,
307 cap & (1 << 31) ? "64bit " : "",
308 cap & (1 << 30) ? "ncq " : "",
309 cap & (1 << 28) ? "ilck " : "",
310 cap & (1 << 27) ? "stag " : "",
311 cap & (1 << 26) ? "pm " : "",
312 cap & (1 << 25) ? "led " : "",
313 cap & (1 << 24) ? "clo " : "",
314 cap & (1 << 19) ? "nz " : "",
315 cap & (1 << 18) ? "only " : "",
316 cap & (1 << 17) ? "pmp " : "",
317 cap & (1 << 15) ? "pio " : "",
318 cap & (1 << 14) ? "slum " : "",
319 cap & (1 << 13) ? "part " : "");
322 static int ahci_init_one(int pdev)
325 struct ahci_uc_priv *uc_priv = NULL;
327 uc_priv = malloc(sizeof(struct ahci_uc_priv));
328 memset(uc_priv, 0, sizeof(struct ahci_uc_priv));
331 uc_priv->host_flags = ATA_FLAG_SATA
337 uc_priv->mmio_base = (void __iomem *)CONFIG_DWC_AHSATA_BASE_ADDR;
339 /* initialize adapter */
340 rc = ahci_host_init(uc_priv);
344 ahci_print_info(uc_priv);
346 /* Save the uc_private struct to block device struct */
347 sata_dev_desc[pdev].priv = uc_priv;
355 static int ahci_fill_sg(struct ahci_uc_priv *uc_priv, u8 port,
356 unsigned char *buf, int buf_len)
358 struct ahci_ioports *pp = &uc_priv->port[port];
359 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
360 u32 sg_count, max_bytes;
363 max_bytes = MAX_DATA_BYTES_PER_SG;
364 sg_count = ((buf_len - 1) / max_bytes) + 1;
365 if (sg_count > AHCI_MAX_SG) {
366 printf("Error:Too much sg!\n");
370 for (i = 0; i < sg_count; i++) {
372 cpu_to_le32((u32)buf + i * max_bytes);
373 ahci_sg->addr_hi = 0;
374 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
379 buf_len -= max_bytes;
385 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 cmd_slot, u32 opts)
387 struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)(pp->cmd_slot +
388 AHCI_CMD_SLOT_SZ * cmd_slot);
390 memset(cmd_hdr, 0, AHCI_CMD_SLOT_SZ);
391 cmd_hdr->opts = cpu_to_le32(opts);
393 pp->cmd_slot->tbl_addr = cpu_to_le32((u32)pp->cmd_tbl & 0xffffffff);
394 #ifdef CONFIG_PHYS_64BIT
395 pp->cmd_slot->tbl_addr_hi =
396 cpu_to_le32((u32)(((pp->cmd_tbl) >> 16) >> 16));
400 #define AHCI_GET_CMD_SLOT(c) ((c) ? ffs(c) : 0)
402 static int ahci_exec_ata_cmd(struct ahci_uc_priv *uc_priv, u8 port,
403 struct sata_fis_h2d *cfis, u8 *buf, u32 buf_len,
406 struct ahci_ioports *pp = &uc_priv->port[port];
407 struct sata_port_regs *port_mmio = pp->port_mmio;
409 int sg_count = 0, cmd_slot = 0;
411 cmd_slot = AHCI_GET_CMD_SLOT(readl(&port_mmio->ci));
412 if (32 == cmd_slot) {
413 printf("Can't find empty command slot!\n");
417 /* Check xfer length */
418 if (buf_len > MAX_BYTES_PER_TRANS) {
419 printf("Max transfer length is %dB\n\r",
420 MAX_BYTES_PER_TRANS);
424 memcpy((u8 *)(pp->cmd_tbl), cfis, sizeof(struct sata_fis_h2d));
426 sg_count = ahci_fill_sg(uc_priv, port, buf, buf_len);
427 opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16);
430 flush_cache((ulong)buf, buf_len);
432 ahci_fill_cmd_slot(pp, cmd_slot, opts);
434 flush_cache((int)(pp->cmd_slot), AHCI_PORT_PRIV_DMA_SZ);
435 writel_with_flush(1 << cmd_slot, &port_mmio->ci);
437 if (waiting_for_cmd_completed((u8 *)&port_mmio->ci, 10000,
439 printf("timeout exit!\n");
442 invalidate_dcache_range((int)(pp->cmd_slot),
443 (int)(pp->cmd_slot)+AHCI_PORT_PRIV_DMA_SZ);
444 debug("ahci_exec_ata_cmd: %d byte transferred.\n",
445 pp->cmd_slot->status);
447 invalidate_dcache_range((ulong)buf, (ulong)buf+buf_len);
452 static void ahci_set_feature(struct ahci_uc_priv *uc_priv, u8 port)
454 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
455 struct sata_fis_h2d *cfis = &h2d;
457 memset(cfis, 0, sizeof(struct sata_fis_h2d));
458 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
459 cfis->pm_port_c = 1 << 7;
460 cfis->command = ATA_CMD_SET_FEATURES;
461 cfis->features = SETFEATURES_XFER;
462 cfis->sector_count = ffs(uc_priv->udma_mask + 1) + 0x3e;
464 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, READ_CMD);
467 static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
469 struct ahci_ioports *pp = &uc_priv->port[port];
470 struct sata_port_regs *port_mmio = pp->port_mmio;
473 int timeout = 10000000;
475 debug("Enter start port: %d\n", port);
476 port_status = readl(&port_mmio->ssts);
477 debug("Port %d status: %x\n", port, port_status);
478 if ((port_status & 0xf) != 0x03) {
479 printf("No Link on this port!\n");
483 mem = (u32)malloc(AHCI_PORT_PRIV_DMA_SZ + 1024);
486 printf("No mem for table!\n");
490 mem = (mem + 0x400) & (~0x3ff); /* Aligned to 1024-bytes */
491 memset((u8 *)mem, 0, AHCI_PORT_PRIV_DMA_SZ);
494 * First item in chunk of DMA memory: 32-slot command table,
495 * 32 bytes each in size
497 pp->cmd_slot = (struct ahci_cmd_hdr *)mem;
498 debug("cmd_slot = 0x%x\n", (unsigned int) pp->cmd_slot);
499 mem += (AHCI_CMD_SLOT_SZ * DWC_AHSATA_MAX_CMD_SLOTS);
502 * Second item: Received-FIS area, 256-Byte aligned
505 mem += AHCI_RX_FIS_SZ;
508 * Third item: data area for storing a single command
509 * and its scatter-gather table
512 debug("cmd_tbl_dma = 0x%lx\n", pp->cmd_tbl);
514 mem += AHCI_CMD_TBL_HDR;
516 writel_with_flush(0x00004444, &port_mmio->dmacr);
517 pp->cmd_tbl_sg = (struct ahci_sg *)mem;
518 writel_with_flush((u32)pp->cmd_slot, &port_mmio->clb);
519 writel_with_flush(pp->rx_fis, &port_mmio->fb);
522 writel_with_flush((SATA_PORT_CMD_FRE | readl(&port_mmio->cmd)),
525 /* Wait device ready */
526 while ((readl(&port_mmio->tfd) & (SATA_PORT_TFD_STS_ERR |
527 SATA_PORT_TFD_STS_DRQ | SATA_PORT_TFD_STS_BSY))
531 debug("Device not ready for BSY, DRQ and"
536 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
537 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
538 PORT_CMD_START, &port_mmio->cmd);
540 debug("Exit start port %d\n", port);
545 static void dwc_ahsata_print_info(struct blk_desc *pdev)
547 printf("SATA Device Info:\n\r");
548 #ifdef CONFIG_SYS_64BIT_LBA
549 printf("S/N: %s\n\rProduct model number: %s\n\r"
550 "Firmware version: %s\n\rCapacity: %lld sectors\n\r",
551 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
553 printf("S/N: %s\n\rProduct model number: %s\n\r"
554 "Firmware version: %s\n\rCapacity: %ld sectors\n\r",
555 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
559 static void dwc_ahsata_identify(struct ahci_uc_priv *uc_priv, u16 *id)
561 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
562 struct sata_fis_h2d *cfis = &h2d;
563 u8 port = uc_priv->hard_port_no;
565 memset(cfis, 0, sizeof(struct sata_fis_h2d));
567 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
568 cfis->pm_port_c = 0x80; /* is command */
569 cfis->command = ATA_CMD_ID_ATA;
571 ahci_exec_ata_cmd(uc_priv, port, cfis, (u8 *)id, ATA_ID_WORDS * 2,
573 ata_swap_buf_le16(id, ATA_ID_WORDS);
576 static void dwc_ahsata_xfer_mode(struct ahci_uc_priv *uc_priv, u16 *id)
578 uc_priv->pio_mask = id[ATA_ID_PIO_MODES];
579 uc_priv->udma_mask = id[ATA_ID_UDMA_MODES];
580 debug("pio %04x, udma %04x\n\r", uc_priv->pio_mask, uc_priv->udma_mask);
583 static u32 dwc_ahsata_rw_cmd(struct ahci_uc_priv *uc_priv, u32 start,
584 u32 blkcnt, u8 *buffer, int is_write)
586 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
587 struct sata_fis_h2d *cfis = &h2d;
588 u8 port = uc_priv->hard_port_no;
593 memset(cfis, 0, sizeof(struct sata_fis_h2d));
595 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
596 cfis->pm_port_c = 0x80; /* is command */
597 cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ;
598 cfis->device = ATA_LBA;
600 cfis->device |= (block >> 24) & 0xf;
601 cfis->lba_high = (block >> 16) & 0xff;
602 cfis->lba_mid = (block >> 8) & 0xff;
603 cfis->lba_low = block & 0xff;
604 cfis->sector_count = (u8)(blkcnt & 0xff);
606 if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
607 ATA_SECT_SIZE * blkcnt, is_write) > 0)
613 static void dwc_ahsata_flush_cache(struct ahci_uc_priv *uc_priv)
615 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
616 struct sata_fis_h2d *cfis = &h2d;
617 u8 port = uc_priv->hard_port_no;
619 memset(cfis, 0, sizeof(struct sata_fis_h2d));
621 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
622 cfis->pm_port_c = 0x80; /* is command */
623 cfis->command = ATA_CMD_FLUSH;
625 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, 0);
628 static u32 dwc_ahsata_rw_cmd_ext(struct ahci_uc_priv *uc_priv, u32 start,
629 lbaint_t blkcnt, u8 *buffer, int is_write)
631 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
632 struct sata_fis_h2d *cfis = &h2d;
633 u8 port = uc_priv->hard_port_no;
638 memset(cfis, 0, sizeof(struct sata_fis_h2d));
640 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
641 cfis->pm_port_c = 0x80; /* is command */
643 cfis->command = (is_write) ? ATA_CMD_WRITE_EXT
646 cfis->lba_high_exp = (block >> 40) & 0xff;
647 cfis->lba_mid_exp = (block >> 32) & 0xff;
648 cfis->lba_low_exp = (block >> 24) & 0xff;
649 cfis->lba_high = (block >> 16) & 0xff;
650 cfis->lba_mid = (block >> 8) & 0xff;
651 cfis->lba_low = block & 0xff;
652 cfis->device = ATA_LBA;
653 cfis->sector_count_exp = (blkcnt >> 8) & 0xff;
654 cfis->sector_count = blkcnt & 0xff;
656 if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
657 ATA_SECT_SIZE * blkcnt, is_write) > 0)
663 static void dwc_ahsata_flush_cache_ext(struct ahci_uc_priv *uc_priv)
665 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
666 struct sata_fis_h2d *cfis = &h2d;
667 u8 port = uc_priv->hard_port_no;
669 memset(cfis, 0, sizeof(struct sata_fis_h2d));
671 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
672 cfis->pm_port_c = 0x80; /* is command */
673 cfis->command = ATA_CMD_FLUSH_EXT;
675 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, 0);
678 static void dwc_ahsata_init_wcache(struct ahci_uc_priv *uc_priv, u16 *id)
680 if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
681 uc_priv->flags |= SATA_FLAG_WCACHE;
682 if (ata_id_has_flush(id))
683 uc_priv->flags |= SATA_FLAG_FLUSH;
684 if (ata_id_has_flush_ext(id))
685 uc_priv->flags |= SATA_FLAG_FLUSH_EXT;
688 static u32 ata_low_level_rw_lba48(struct ahci_uc_priv *uc_priv, u32 blknr,
689 lbaint_t blkcnt, const void *buffer,
700 max_blks = ATA_MAX_SECTORS_LBA48;
703 if (blks > max_blks) {
704 if (max_blks != dwc_ahsata_rw_cmd_ext(uc_priv, start,
710 addr += ATA_SECT_SIZE * max_blks;
712 if (blks != dwc_ahsata_rw_cmd_ext(uc_priv, start, blks,
717 addr += ATA_SECT_SIZE * blks;
724 static u32 ata_low_level_rw_lba28(struct ahci_uc_priv *uc_priv, u32 blknr,
725 lbaint_t blkcnt, const void *buffer,
736 max_blks = ATA_MAX_SECTORS;
738 if (blks > max_blks) {
739 if (max_blks != dwc_ahsata_rw_cmd(uc_priv, start,
745 addr += ATA_SECT_SIZE * max_blks;
747 if (blks != dwc_ahsata_rw_cmd(uc_priv, start, blks,
752 addr += ATA_SECT_SIZE * blks;
759 int init_sata(int dev)
763 struct ahci_uc_priv *uc_priv = NULL;
765 #if defined(CONFIG_MX6)
766 if (!is_mx6dq() && !is_mx6dqp())
769 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
770 printf("The sata index %d is out of ranges\n\r", dev);
776 uc_priv = sata_dev_desc[dev].priv;
777 linkmap = uc_priv->link_port_map;
780 printf("No port device detected!\n");
784 for (i = 0; i < uc_priv->n_ports; i++) {
785 if ((linkmap >> i) && ((linkmap >> i) & 0x01)) {
786 if (ahci_port_start(uc_priv, (u8)i)) {
787 printf("Can not start port %d\n", i);
790 uc_priv->hard_port_no = i;
798 int reset_sata(int dev)
800 struct ahci_uc_priv *uc_priv;
801 struct sata_host_regs *host_mmio;
803 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
804 printf("The sata index %d is out of ranges\n\r", dev);
808 uc_priv = sata_dev_desc[dev].priv;
810 /* not initialized, so nothing to reset */
813 host_mmio = uc_priv->mmio_base;
814 setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR);
815 while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR)
821 int sata_port_status(int dev, int port)
823 struct sata_port_regs *port_mmio;
824 struct ahci_uc_priv *uc_priv = NULL;
826 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1))
829 if (sata_dev_desc[dev].priv == NULL)
832 uc_priv = sata_dev_desc[dev].priv;
833 port_mmio = uc_priv->port[port].port_mmio;
835 return readl(&port_mmio->ssts) & SATA_PORT_SSTS_DET_MASK;
839 * SATA interface between low level driver and command layer
841 ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
843 struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
846 if (sata_dev_desc[dev].lba48)
847 rc = ata_low_level_rw_lba48(uc_priv, blknr, blkcnt,
850 rc = ata_low_level_rw_lba28(uc_priv, blknr, blkcnt,
855 ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer)
858 struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
859 u32 flags = uc_priv->flags;
861 if (sata_dev_desc[dev].lba48) {
862 rc = ata_low_level_rw_lba48(uc_priv, blknr, blkcnt, buffer,
864 if ((flags & SATA_FLAG_WCACHE) &&
865 (flags & SATA_FLAG_FLUSH_EXT))
866 dwc_ahsata_flush_cache_ext(uc_priv);
868 rc = ata_low_level_rw_lba28(uc_priv, blknr, blkcnt, buffer,
870 if ((flags & SATA_FLAG_WCACHE) &&
871 (flags & SATA_FLAG_FLUSH))
872 dwc_ahsata_flush_cache(uc_priv);
877 int scan_sata(int dev)
879 u8 serial[ATA_ID_SERNO_LEN + 1] = { 0 };
880 u8 firmware[ATA_ID_FW_REV_LEN + 1] = { 0 };
881 u8 product[ATA_ID_PROD_LEN + 1] = { 0 };
884 struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
885 u8 port = uc_priv->hard_port_no;
886 struct blk_desc *pdev = &sata_dev_desc[dev];
888 id = (u16 *)memalign(ARCH_DMA_MINALIGN,
889 roundup(ARCH_DMA_MINALIGN,
890 (ATA_ID_WORDS * 2)));
892 printf("id malloc failed\n\r");
896 /* Identify device to get information */
897 dwc_ahsata_identify(uc_priv, id);
900 ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
901 memcpy(pdev->product, serial, sizeof(serial));
903 /* Firmware version */
904 ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
905 memcpy(pdev->revision, firmware, sizeof(firmware));
908 ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
909 memcpy(pdev->vendor, product, sizeof(product));
912 n_sectors = ata_id_n_sectors(id);
913 pdev->lba = (u32)n_sectors;
915 pdev->type = DEV_TYPE_HARDDISK;
916 pdev->blksz = ATA_SECT_SIZE;
919 /* Check if support LBA48 */
920 if (ata_id_has_lba48(id)) {
922 debug("Device support LBA48\n\r");
925 /* Get the NCQ queue depth from device */
926 uc_priv->flags &= (~SATA_FLAG_Q_DEP_MASK);
927 uc_priv->flags |= ata_id_queue_depth(id);
929 /* Get the xfer mode from device */
930 dwc_ahsata_xfer_mode(uc_priv, id);
932 /* Get the write cache status from device */
933 dwc_ahsata_init_wcache(uc_priv, id);
935 /* Set the xfer mode to highest speed */
936 ahci_set_feature(uc_priv, port);
940 dwc_ahsata_print_info(&sata_dev_desc[dev]);