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 =
106 (struct sata_host_regs *)uc_priv->mmio_base;
108 writel(SATA_HOST_OOBR_WE, &(host_mmio->oobr));
109 writel(0x02060b14, &(host_mmio->oobr));
114 static int ahci_host_init(struct ahci_uc_priv *uc_priv)
116 u32 tmp, cap_save, num_ports;
117 int i, j, timeout = 1000;
118 struct sata_port_regs *port_mmio = NULL;
119 struct sata_host_regs *host_mmio =
120 (struct sata_host_regs *)uc_priv->mmio_base;
121 int clk = mxc_get_clock(MXC_SATA_CLK);
123 cap_save = readl(&(host_mmio->cap));
124 cap_save |= SATA_HOST_CAP_SSS;
126 /* global controller reset */
127 tmp = readl(&(host_mmio->ghc));
128 if ((tmp & SATA_HOST_GHC_HR) == 0)
129 writel_with_flush(tmp | SATA_HOST_GHC_HR, &(host_mmio->ghc));
131 while ((readl(&(host_mmio->ghc)) & SATA_HOST_GHC_HR)
136 debug("controller reset failed (0x%x)\n", tmp);
141 writel(clk / 1000, &(host_mmio->timer1ms));
143 ahci_setup_oobr(uc_priv, 0);
145 writel_with_flush(SATA_HOST_GHC_AE, &(host_mmio->ghc));
146 writel(cap_save, &(host_mmio->cap));
147 num_ports = (cap_save & SATA_HOST_CAP_NP_MASK) + 1;
148 writel_with_flush((1 << num_ports) - 1,
152 * Determine which Ports are implemented by the DWC_ahsata,
153 * by reading the PI register. This bit map value aids the
154 * software to determine how many Ports are available and
155 * which Port registers need to be initialized.
157 uc_priv->cap = readl(&(host_mmio->cap));
158 uc_priv->port_map = readl(&(host_mmio->pi));
160 /* Determine how many command slots the HBA supports */
161 uc_priv->n_ports = (uc_priv->cap & SATA_HOST_CAP_NP_MASK) + 1;
163 debug("cap 0x%x port_map 0x%x n_ports %d\n",
164 uc_priv->cap, uc_priv->port_map, uc_priv->n_ports);
166 for (i = 0; i < uc_priv->n_ports; i++) {
167 uc_priv->port[i].port_mmio = ahci_port_base(host_mmio, i);
169 (struct sata_port_regs *)uc_priv->port[i].port_mmio;
171 /* Ensure that the DWC_ahsata is in idle state */
172 tmp = readl(&(port_mmio->cmd));
175 * When P#CMD.ST, P#CMD.CR, P#CMD.FRE and P#CMD.FR
176 * are all cleared, the Port is in an idle state.
178 if (tmp & (SATA_PORT_CMD_CR | SATA_PORT_CMD_FR |
179 SATA_PORT_CMD_FRE | SATA_PORT_CMD_ST)) {
182 * System software places a Port into the idle state by
183 * clearing P#CMD.ST and waiting for P#CMD.CR to return
186 tmp &= ~SATA_PORT_CMD_ST;
187 writel_with_flush(tmp, &(port_mmio->cmd));
190 * spec says 500 msecs for each bit, so
191 * this is slightly incorrect.
196 while ((readl(&(port_mmio->cmd)) & SATA_PORT_CMD_CR)
201 debug("port reset failed (0x%x)\n", tmp);
207 tmp = readl(&(port_mmio->cmd));
208 writel((tmp | SATA_PORT_CMD_SUD), &(port_mmio->cmd));
210 /* Wait for spin-up to finish */
212 while (!(readl(&(port_mmio->cmd)) | SATA_PORT_CMD_SUD)
216 debug("Spin-Up can't finish!\n");
220 for (j = 0; j < 100; ++j) {
222 tmp = readl(&(port_mmio->ssts));
223 if (((tmp & SATA_PORT_SSTS_DET_MASK) == 0x3) ||
224 ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x1))
228 /* Wait for COMINIT bit 26 (DIAG_X) in SERR */
230 while (!(readl(&(port_mmio->serr)) | SATA_PORT_SERR_DIAG_X)
234 debug("Can't find DIAG_X set!\n");
239 * For each implemented Port, clear the P#SERR
240 * register, by writing ones to each implemented\
243 tmp = readl(&(port_mmio->serr));
244 debug("P#SERR 0x%x\n",
246 writel(tmp, &(port_mmio->serr));
248 /* Ack any pending irq events for this port */
249 tmp = readl(&(host_mmio->is));
250 debug("IS 0x%x\n", tmp);
252 writel(tmp, &(host_mmio->is));
254 writel(1 << i, &(host_mmio->is));
256 /* set irq mask (enables interrupts) */
257 writel(DEF_PORT_IRQ, &(port_mmio->ie));
259 /* register linkup ports */
260 tmp = readl(&(port_mmio->ssts));
261 debug("Port %d status: 0x%x\n", i, tmp);
262 if ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x03)
263 uc_priv->link_port_map |= (0x01 << i);
266 tmp = readl(&(host_mmio->ghc));
267 debug("GHC 0x%x\n", tmp);
268 writel(tmp | SATA_HOST_GHC_IE, &(host_mmio->ghc));
269 tmp = readl(&(host_mmio->ghc));
270 debug("GHC 0x%x\n", tmp);
275 static void ahci_print_info(struct ahci_uc_priv *uc_priv)
277 struct sata_host_regs *host_mmio =
278 (struct sata_host_regs *)uc_priv->mmio_base;
279 u32 vers, cap, impl, speed;
283 vers = readl(&(host_mmio->vs));
285 impl = uc_priv->port_map;
287 speed = (cap & SATA_HOST_CAP_ISS_MASK)
288 >> SATA_HOST_CAP_ISS_OFFSET;
298 printf("AHCI %02x%02x.%02x%02x "
299 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
304 ((cap >> 8) & 0x1f) + 1,
313 cap & (1 << 31) ? "64bit " : "",
314 cap & (1 << 30) ? "ncq " : "",
315 cap & (1 << 28) ? "ilck " : "",
316 cap & (1 << 27) ? "stag " : "",
317 cap & (1 << 26) ? "pm " : "",
318 cap & (1 << 25) ? "led " : "",
319 cap & (1 << 24) ? "clo " : "",
320 cap & (1 << 19) ? "nz " : "",
321 cap & (1 << 18) ? "only " : "",
322 cap & (1 << 17) ? "pmp " : "",
323 cap & (1 << 15) ? "pio " : "",
324 cap & (1 << 14) ? "slum " : "",
325 cap & (1 << 13) ? "part " : "");
328 static int ahci_init_one(int pdev)
331 struct ahci_uc_priv *uc_priv = NULL;
333 uc_priv = malloc(sizeof(struct ahci_uc_priv));
334 memset(uc_priv, 0, sizeof(struct ahci_uc_priv));
337 uc_priv->host_flags = ATA_FLAG_SATA
343 uc_priv->mmio_base = (void __iomem *)CONFIG_DWC_AHSATA_BASE_ADDR;
345 /* initialize adapter */
346 rc = ahci_host_init(uc_priv);
350 ahci_print_info(uc_priv);
352 /* Save the uc_private struct to block device struct */
353 sata_dev_desc[pdev].priv = (void *)uc_priv;
361 static int ahci_fill_sg(struct ahci_uc_priv *uc_priv, u8 port,
362 unsigned char *buf, int buf_len)
364 struct ahci_ioports *pp = &(uc_priv->port[port]);
365 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
366 u32 sg_count, max_bytes;
369 max_bytes = MAX_DATA_BYTES_PER_SG;
370 sg_count = ((buf_len - 1) / max_bytes) + 1;
371 if (sg_count > AHCI_MAX_SG) {
372 printf("Error:Too much sg!\n");
376 for (i = 0; i < sg_count; i++) {
378 cpu_to_le32((u32)buf + i * max_bytes);
379 ahci_sg->addr_hi = 0;
380 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
385 buf_len -= max_bytes;
391 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 cmd_slot, u32 opts)
393 struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)(pp->cmd_slot +
394 AHCI_CMD_SLOT_SZ * cmd_slot);
396 memset(cmd_hdr, 0, AHCI_CMD_SLOT_SZ);
397 cmd_hdr->opts = cpu_to_le32(opts);
399 pp->cmd_slot->tbl_addr = cpu_to_le32((u32)pp->cmd_tbl & 0xffffffff);
400 #ifdef CONFIG_PHYS_64BIT
401 pp->cmd_slot->tbl_addr_hi =
402 cpu_to_le32((u32)(((pp->cmd_tbl) >> 16) >> 16));
406 #define AHCI_GET_CMD_SLOT(c) ((c) ? ffs(c) : 0)
408 static int ahci_exec_ata_cmd(struct ahci_uc_priv *uc_priv, u8 port,
409 struct sata_fis_h2d *cfis, u8 *buf, u32 buf_len,
412 struct ahci_ioports *pp = &(uc_priv->port[port]);
413 struct sata_port_regs *port_mmio =
414 (struct sata_port_regs *)pp->port_mmio;
416 int sg_count = 0, cmd_slot = 0;
418 cmd_slot = AHCI_GET_CMD_SLOT(readl(&(port_mmio->ci)));
419 if (32 == cmd_slot) {
420 printf("Can't find empty command slot!\n");
424 /* Check xfer length */
425 if (buf_len > MAX_BYTES_PER_TRANS) {
426 printf("Max transfer length is %dB\n\r",
427 MAX_BYTES_PER_TRANS);
431 memcpy((u8 *)(pp->cmd_tbl), cfis, sizeof(struct sata_fis_h2d));
433 sg_count = ahci_fill_sg(uc_priv, port, buf, buf_len);
434 opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16);
437 flush_cache((ulong)buf, buf_len);
439 ahci_fill_cmd_slot(pp, cmd_slot, opts);
441 flush_cache((int)(pp->cmd_slot), AHCI_PORT_PRIV_DMA_SZ);
442 writel_with_flush(1 << cmd_slot, &(port_mmio->ci));
444 if (waiting_for_cmd_completed((u8 *)&(port_mmio->ci),
445 10000, 0x1 << cmd_slot)) {
446 printf("timeout exit!\n");
449 invalidate_dcache_range((int)(pp->cmd_slot),
450 (int)(pp->cmd_slot)+AHCI_PORT_PRIV_DMA_SZ);
451 debug("ahci_exec_ata_cmd: %d byte transferred.\n",
452 pp->cmd_slot->status);
454 invalidate_dcache_range((ulong)buf, (ulong)buf+buf_len);
459 static void ahci_set_feature(u8 dev, u8 port)
461 struct ahci_uc_priv *uc_priv =
462 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
463 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
464 struct sata_fis_h2d *cfis = &h2d;
466 memset(cfis, 0, sizeof(struct sata_fis_h2d));
467 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
468 cfis->pm_port_c = 1 << 7;
469 cfis->command = ATA_CMD_SET_FEATURES;
470 cfis->features = SETFEATURES_XFER;
471 cfis->sector_count = ffs(uc_priv->udma_mask + 1) + 0x3e;
473 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, READ_CMD);
476 static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
478 struct ahci_ioports *pp = &(uc_priv->port[port]);
479 struct sata_port_regs *port_mmio =
480 (struct sata_port_regs *)pp->port_mmio;
483 int timeout = 10000000;
485 debug("Enter start port: %d\n", port);
486 port_status = readl(&(port_mmio->ssts));
487 debug("Port %d status: %x\n", port, port_status);
488 if ((port_status & 0xf) != 0x03) {
489 printf("No Link on this port!\n");
493 mem = (u32)malloc(AHCI_PORT_PRIV_DMA_SZ + 1024);
496 printf("No mem for table!\n");
500 mem = (mem + 0x400) & (~0x3ff); /* Aligned to 1024-bytes */
501 memset((u8 *)mem, 0, AHCI_PORT_PRIV_DMA_SZ);
504 * First item in chunk of DMA memory: 32-slot command table,
505 * 32 bytes each in size
507 pp->cmd_slot = (struct ahci_cmd_hdr *)mem;
508 debug("cmd_slot = 0x%x\n", (unsigned int) pp->cmd_slot);
509 mem += (AHCI_CMD_SLOT_SZ * DWC_AHSATA_MAX_CMD_SLOTS);
512 * Second item: Received-FIS area, 256-Byte aligned
515 mem += AHCI_RX_FIS_SZ;
518 * Third item: data area for storing a single command
519 * and its scatter-gather table
522 debug("cmd_tbl_dma = 0x%lx\n", pp->cmd_tbl);
524 mem += AHCI_CMD_TBL_HDR;
526 writel_with_flush(0x00004444, &(port_mmio->dmacr));
527 pp->cmd_tbl_sg = (struct ahci_sg *)mem;
528 writel_with_flush((u32)pp->cmd_slot, &(port_mmio->clb));
529 writel_with_flush(pp->rx_fis, &(port_mmio->fb));
532 writel_with_flush((SATA_PORT_CMD_FRE | readl(&(port_mmio->cmd))),
535 /* Wait device ready */
536 while ((readl(&(port_mmio->tfd)) & (SATA_PORT_TFD_STS_ERR |
537 SATA_PORT_TFD_STS_DRQ | SATA_PORT_TFD_STS_BSY))
541 debug("Device not ready for BSY, DRQ and"
546 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
547 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
548 PORT_CMD_START, &(port_mmio->cmd));
550 debug("Exit start port %d\n", port);
555 static void dwc_ahsata_print_info(int dev)
557 struct blk_desc *pdev = &(sata_dev_desc[dev]);
559 printf("SATA Device Info:\n\r");
560 #ifdef CONFIG_SYS_64BIT_LBA
561 printf("S/N: %s\n\rProduct model number: %s\n\r"
562 "Firmware version: %s\n\rCapacity: %lld sectors\n\r",
563 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
565 printf("S/N: %s\n\rProduct model number: %s\n\r"
566 "Firmware version: %s\n\rCapacity: %ld sectors\n\r",
567 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
571 static void dwc_ahsata_identify(int dev, u16 *id)
573 struct ahci_uc_priv *uc_priv =
574 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
575 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
576 struct sata_fis_h2d *cfis = &h2d;
577 u8 port = uc_priv->hard_port_no;
579 memset(cfis, 0, sizeof(struct sata_fis_h2d));
581 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
582 cfis->pm_port_c = 0x80; /* is command */
583 cfis->command = ATA_CMD_ID_ATA;
585 ahci_exec_ata_cmd(uc_priv, port, cfis, (u8 *)id, ATA_ID_WORDS * 2,
587 ata_swap_buf_le16(id, ATA_ID_WORDS);
590 static void dwc_ahsata_xfer_mode(int dev, u16 *id)
592 struct ahci_uc_priv *uc_priv =
593 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
595 uc_priv->pio_mask = id[ATA_ID_PIO_MODES];
596 uc_priv->udma_mask = id[ATA_ID_UDMA_MODES];
597 debug("pio %04x, udma %04x\n\r", uc_priv->pio_mask, uc_priv->udma_mask);
600 static u32 dwc_ahsata_rw_cmd(int dev, u32 start, u32 blkcnt,
601 u8 *buffer, int is_write)
603 struct ahci_uc_priv *uc_priv =
604 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
605 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
606 struct sata_fis_h2d *cfis = &h2d;
607 u8 port = uc_priv->hard_port_no;
612 memset(cfis, 0, sizeof(struct sata_fis_h2d));
614 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
615 cfis->pm_port_c = 0x80; /* is command */
616 cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ;
617 cfis->device = ATA_LBA;
619 cfis->device |= (block >> 24) & 0xf;
620 cfis->lba_high = (block >> 16) & 0xff;
621 cfis->lba_mid = (block >> 8) & 0xff;
622 cfis->lba_low = block & 0xff;
623 cfis->sector_count = (u8)(blkcnt & 0xff);
625 if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
626 ATA_SECT_SIZE * blkcnt, is_write) > 0)
632 static void dwc_ahsata_flush_cache(int dev)
634 struct ahci_uc_priv *uc_priv =
635 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
636 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
637 struct sata_fis_h2d *cfis = &h2d;
638 u8 port = uc_priv->hard_port_no;
640 memset(cfis, 0, sizeof(struct sata_fis_h2d));
642 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
643 cfis->pm_port_c = 0x80; /* is command */
644 cfis->command = ATA_CMD_FLUSH;
646 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, 0);
649 static u32 dwc_ahsata_rw_cmd_ext(int dev, u32 start, lbaint_t blkcnt,
650 u8 *buffer, int is_write)
652 struct ahci_uc_priv *uc_priv =
653 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
654 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
655 struct sata_fis_h2d *cfis = &h2d;
656 u8 port = uc_priv->hard_port_no;
661 memset(cfis, 0, sizeof(struct sata_fis_h2d));
663 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
664 cfis->pm_port_c = 0x80; /* is command */
666 cfis->command = (is_write) ? ATA_CMD_WRITE_EXT
669 cfis->lba_high_exp = (block >> 40) & 0xff;
670 cfis->lba_mid_exp = (block >> 32) & 0xff;
671 cfis->lba_low_exp = (block >> 24) & 0xff;
672 cfis->lba_high = (block >> 16) & 0xff;
673 cfis->lba_mid = (block >> 8) & 0xff;
674 cfis->lba_low = block & 0xff;
675 cfis->device = ATA_LBA;
676 cfis->sector_count_exp = (blkcnt >> 8) & 0xff;
677 cfis->sector_count = blkcnt & 0xff;
679 if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
680 ATA_SECT_SIZE * blkcnt, is_write) > 0)
686 static void dwc_ahsata_flush_cache_ext(int dev)
688 struct ahci_uc_priv *uc_priv =
689 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
690 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
691 struct sata_fis_h2d *cfis = &h2d;
692 u8 port = uc_priv->hard_port_no;
694 memset(cfis, 0, sizeof(struct sata_fis_h2d));
696 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
697 cfis->pm_port_c = 0x80; /* is command */
698 cfis->command = ATA_CMD_FLUSH_EXT;
700 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, 0);
703 static void dwc_ahsata_init_wcache(int dev, u16 *id)
705 struct ahci_uc_priv *uc_priv =
706 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
708 if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
709 uc_priv->flags |= SATA_FLAG_WCACHE;
710 if (ata_id_has_flush(id))
711 uc_priv->flags |= SATA_FLAG_FLUSH;
712 if (ata_id_has_flush_ext(id))
713 uc_priv->flags |= SATA_FLAG_FLUSH_EXT;
716 static u32 ata_low_level_rw_lba48(int dev, u32 blknr, lbaint_t blkcnt,
717 const void *buffer, int is_write)
727 max_blks = ATA_MAX_SECTORS_LBA48;
730 if (blks > max_blks) {
731 if (max_blks != dwc_ahsata_rw_cmd_ext(dev, start,
732 max_blks, addr, is_write))
736 addr += ATA_SECT_SIZE * max_blks;
738 if (blks != dwc_ahsata_rw_cmd_ext(dev, start,
739 blks, addr, is_write))
743 addr += ATA_SECT_SIZE * blks;
750 static u32 ata_low_level_rw_lba28(int dev, u32 blknr, lbaint_t blkcnt,
751 const void *buffer, int is_write)
761 max_blks = ATA_MAX_SECTORS;
763 if (blks > max_blks) {
764 if (max_blks != dwc_ahsata_rw_cmd(dev, start,
765 max_blks, addr, is_write))
769 addr += ATA_SECT_SIZE * max_blks;
771 if (blks != dwc_ahsata_rw_cmd(dev, start,
772 blks, addr, is_write))
776 addr += ATA_SECT_SIZE * blks;
783 int init_sata(int dev)
787 struct ahci_uc_priv *uc_priv = NULL;
789 #if defined(CONFIG_MX6)
790 if (!is_mx6dq() && !is_mx6dqp())
793 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
794 printf("The sata index %d is out of ranges\n\r", dev);
800 uc_priv = (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
801 linkmap = uc_priv->link_port_map;
804 printf("No port device detected!\n");
808 for (i = 0; i < uc_priv->n_ports; i++) {
809 if ((linkmap >> i) && ((linkmap >> i) & 0x01)) {
810 if (ahci_port_start(uc_priv, (u8)i)) {
811 printf("Can not start port %d\n", i);
814 uc_priv->hard_port_no = i;
822 int reset_sata(int dev)
824 struct ahci_uc_priv *uc_priv;
825 struct sata_host_regs *host_mmio;
827 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
828 printf("The sata index %d is out of ranges\n\r", dev);
832 uc_priv = (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
834 /* not initialized, so nothing to reset */
837 host_mmio = (struct sata_host_regs *)uc_priv->mmio_base;
838 setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR);
839 while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR)
845 int sata_port_status(int dev, int port)
847 struct sata_port_regs *port_mmio;
848 struct ahci_uc_priv *uc_priv = NULL;
850 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1))
853 if (sata_dev_desc[dev].priv == NULL)
856 uc_priv = (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
857 port_mmio = (struct sata_port_regs *)uc_priv->port[port].port_mmio;
859 return readl(&(port_mmio->ssts)) & SATA_PORT_SSTS_DET_MASK;
863 * SATA interface between low level driver and command layer
865 ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
869 if (sata_dev_desc[dev].lba48)
870 rc = ata_low_level_rw_lba48(dev, blknr, blkcnt,
873 rc = ata_low_level_rw_lba28(dev, blknr, blkcnt,
878 ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer)
881 struct ahci_uc_priv *uc_priv =
882 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
883 u32 flags = uc_priv->flags;
885 if (sata_dev_desc[dev].lba48) {
886 rc = ata_low_level_rw_lba48(dev, blknr, blkcnt,
888 if ((flags & SATA_FLAG_WCACHE) &&
889 (flags & SATA_FLAG_FLUSH_EXT))
890 dwc_ahsata_flush_cache_ext(dev);
892 rc = ata_low_level_rw_lba28(dev, blknr, blkcnt,
894 if ((flags & SATA_FLAG_WCACHE) &&
895 (flags & SATA_FLAG_FLUSH))
896 dwc_ahsata_flush_cache(dev);
901 int scan_sata(int dev)
903 u8 serial[ATA_ID_SERNO_LEN + 1] = { 0 };
904 u8 firmware[ATA_ID_FW_REV_LEN + 1] = { 0 };
905 u8 product[ATA_ID_PROD_LEN + 1] = { 0 };
908 struct ahci_uc_priv *uc_priv =
909 (struct ahci_uc_priv *)sata_dev_desc[dev].priv;
910 u8 port = uc_priv->hard_port_no;
911 struct blk_desc *pdev = &(sata_dev_desc[dev]);
913 id = (u16 *)memalign(ARCH_DMA_MINALIGN,
914 roundup(ARCH_DMA_MINALIGN,
915 (ATA_ID_WORDS * 2)));
917 printf("id malloc failed\n\r");
921 /* Identify device to get information */
922 dwc_ahsata_identify(dev, id);
925 ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
926 memcpy(pdev->product, serial, sizeof(serial));
928 /* Firmware version */
929 ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
930 memcpy(pdev->revision, firmware, sizeof(firmware));
933 ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
934 memcpy(pdev->vendor, product, sizeof(product));
937 n_sectors = ata_id_n_sectors(id);
938 pdev->lba = (u32)n_sectors;
940 pdev->type = DEV_TYPE_HARDDISK;
941 pdev->blksz = ATA_SECT_SIZE;
944 /* Check if support LBA48 */
945 if (ata_id_has_lba48(id)) {
947 debug("Device support LBA48\n\r");
950 /* Get the NCQ queue depth from device */
951 uc_priv->flags &= (~SATA_FLAG_Q_DEP_MASK);
952 uc_priv->flags |= ata_id_queue_depth(id);
954 /* Get the xfer mode from device */
955 dwc_ahsata_xfer_mode(dev, id);
957 /* Get the write cache status from device */
958 dwc_ahsata_init_wcache(dev, id);
960 /* Set the xfer mode to highest speed */
961 ahci_set_feature(dev, port);
965 dwc_ahsata_print_info(dev);