1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
4 * Terry Lv <r65388@freescale.com>
12 #include <dwc_ahsata.h>
20 #include <asm/cache.h>
22 #include <asm/arch/clock.h>
23 #include <asm/arch/sys_proto.h>
24 #include <asm/mach-imx/sata.h>
25 #include <linux/bitops.h>
26 #include <linux/ctype.h>
27 #include <linux/errno.h>
28 #include "dwc_ahsata_priv.h"
30 struct sata_port_regs {
54 struct sata_host_regs {
83 #define MAX_DATA_BYTES_PER_SG (4 * 1024 * 1024)
84 #define MAX_BYTES_PER_TRANS (AHCI_MAX_SG * MAX_DATA_BYTES_PER_SG)
86 #define writel_with_flush(a, b) do { writel(a, b); readl(b); } while (0)
88 static inline void __iomem *ahci_port_base(void __iomem *base, u32 port)
90 return base + 0x100 + (port * 0x80);
93 static int waiting_for_cmd_completed(u8 *offset,
101 ((status = readl(offset)) & sign) && i < timeout_msec;
105 return (i < timeout_msec) ? 0 : -1;
108 static int ahci_setup_oobr(struct ahci_uc_priv *uc_priv, int clk)
110 struct sata_host_regs *host_mmio = uc_priv->mmio_base;
112 writel(SATA_HOST_OOBR_WE, &host_mmio->oobr);
113 writel(0x02060b14, &host_mmio->oobr);
118 static int ahci_host_init(struct ahci_uc_priv *uc_priv)
120 u32 tmp, cap_save, num_ports;
121 int i, j, timeout = 1000;
122 struct sata_port_regs *port_mmio = NULL;
123 struct sata_host_regs *host_mmio = uc_priv->mmio_base;
124 int clk = mxc_get_clock(MXC_SATA_CLK);
126 cap_save = readl(&host_mmio->cap);
127 cap_save |= SATA_HOST_CAP_SSS;
129 /* global controller reset */
130 tmp = readl(&host_mmio->ghc);
131 if ((tmp & SATA_HOST_GHC_HR) == 0)
132 writel_with_flush(tmp | SATA_HOST_GHC_HR, &host_mmio->ghc);
134 while ((readl(&host_mmio->ghc) & SATA_HOST_GHC_HR) && --timeout)
138 debug("controller reset failed (0x%x)\n", tmp);
143 writel(clk / 1000, &host_mmio->timer1ms);
145 ahci_setup_oobr(uc_priv, 0);
147 writel_with_flush(SATA_HOST_GHC_AE, &host_mmio->ghc);
148 writel(cap_save, &host_mmio->cap);
149 num_ports = (cap_save & SATA_HOST_CAP_NP_MASK) + 1;
150 writel_with_flush((1 << num_ports) - 1, &host_mmio->pi);
153 * Determine which Ports are implemented by the DWC_ahsata,
154 * by reading the PI register. This bit map value aids the
155 * software to determine how many Ports are available and
156 * which Port registers need to be initialized.
158 uc_priv->cap = readl(&host_mmio->cap);
159 uc_priv->port_map = readl(&host_mmio->pi);
161 /* Determine how many command slots the HBA supports */
162 uc_priv->n_ports = (uc_priv->cap & SATA_HOST_CAP_NP_MASK) + 1;
164 debug("cap 0x%x port_map 0x%x n_ports %d\n",
165 uc_priv->cap, uc_priv->port_map, uc_priv->n_ports);
167 for (i = 0; i < uc_priv->n_ports; i++) {
168 uc_priv->port[i].port_mmio = ahci_port_base(host_mmio, i);
169 port_mmio = 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 = uc_priv->mmio_base;
278 u32 vers, cap, impl, speed;
282 vers = readl(&host_mmio->vs);
284 impl = uc_priv->port_map;
286 speed = (cap & SATA_HOST_CAP_ISS_MASK)
287 >> SATA_HOST_CAP_ISS_OFFSET;
297 printf("AHCI %02x%02x.%02x%02x "
298 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
303 ((cap >> 8) & 0x1f) + 1,
312 cap & (1 << 31) ? "64bit " : "",
313 cap & (1 << 30) ? "ncq " : "",
314 cap & (1 << 28) ? "ilck " : "",
315 cap & (1 << 27) ? "stag " : "",
316 cap & (1 << 26) ? "pm " : "",
317 cap & (1 << 25) ? "led " : "",
318 cap & (1 << 24) ? "clo " : "",
319 cap & (1 << 19) ? "nz " : "",
320 cap & (1 << 18) ? "only " : "",
321 cap & (1 << 17) ? "pmp " : "",
322 cap & (1 << 15) ? "pio " : "",
323 cap & (1 << 14) ? "slum " : "",
324 cap & (1 << 13) ? "part " : "");
327 static int ahci_fill_sg(struct ahci_uc_priv *uc_priv, u8 port,
328 unsigned char *buf, int buf_len)
330 struct ahci_ioports *pp = &uc_priv->port[port];
331 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
332 u32 sg_count, max_bytes;
335 max_bytes = MAX_DATA_BYTES_PER_SG;
336 sg_count = ((buf_len - 1) / max_bytes) + 1;
337 if (sg_count > AHCI_MAX_SG) {
338 printf("Error:Too much sg!\n");
342 for (i = 0; i < sg_count; i++) {
344 cpu_to_le32((u32)buf + i * max_bytes);
345 ahci_sg->addr_hi = 0;
346 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
351 buf_len -= max_bytes;
357 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 cmd_slot, u32 opts)
359 struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)(pp->cmd_slot +
360 AHCI_CMD_SLOT_SZ * cmd_slot);
362 memset(cmd_hdr, 0, AHCI_CMD_SLOT_SZ);
363 cmd_hdr->opts = cpu_to_le32(opts);
365 pp->cmd_slot->tbl_addr = cpu_to_le32((u32)pp->cmd_tbl & 0xffffffff);
366 #ifdef CONFIG_PHYS_64BIT
367 pp->cmd_slot->tbl_addr_hi =
368 cpu_to_le32((u32)(((pp->cmd_tbl) >> 16) >> 16));
372 #define AHCI_GET_CMD_SLOT(c) ((c) ? ffs(c) : 0)
374 static int ahci_exec_ata_cmd(struct ahci_uc_priv *uc_priv, u8 port,
375 struct sata_fis_h2d *cfis, u8 *buf, u32 buf_len,
378 struct ahci_ioports *pp = &uc_priv->port[port];
379 struct sata_port_regs *port_mmio = pp->port_mmio;
381 int sg_count = 0, cmd_slot = 0;
383 cmd_slot = AHCI_GET_CMD_SLOT(readl(&port_mmio->ci));
384 if (32 == cmd_slot) {
385 printf("Can't find empty command slot!\n");
389 /* Check xfer length */
390 if (buf_len > MAX_BYTES_PER_TRANS) {
391 printf("Max transfer length is %dB\n\r",
392 MAX_BYTES_PER_TRANS);
396 memcpy((u8 *)(pp->cmd_tbl), cfis, sizeof(struct sata_fis_h2d));
398 sg_count = ahci_fill_sg(uc_priv, port, buf, buf_len);
399 opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16);
402 flush_cache((ulong)buf, buf_len);
404 ahci_fill_cmd_slot(pp, cmd_slot, opts);
406 flush_cache((int)(pp->cmd_slot), AHCI_PORT_PRIV_DMA_SZ);
407 writel_with_flush(1 << cmd_slot, &port_mmio->ci);
409 if (waiting_for_cmd_completed((u8 *)&port_mmio->ci, 10000,
411 printf("timeout exit!\n");
414 invalidate_dcache_range((int)(pp->cmd_slot),
415 (int)(pp->cmd_slot)+AHCI_PORT_PRIV_DMA_SZ);
416 debug("ahci_exec_ata_cmd: %d byte transferred.\n",
417 pp->cmd_slot->status);
419 invalidate_dcache_range((ulong)buf, (ulong)buf+buf_len);
424 static void ahci_set_feature(struct ahci_uc_priv *uc_priv, u8 port)
426 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
427 struct sata_fis_h2d *cfis = &h2d;
429 memset(cfis, 0, sizeof(struct sata_fis_h2d));
430 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
431 cfis->pm_port_c = 1 << 7;
432 cfis->command = ATA_CMD_SET_FEATURES;
433 cfis->features = SETFEATURES_XFER;
434 cfis->sector_count = ffs(uc_priv->udma_mask + 1) + 0x3e;
436 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, READ_CMD);
439 static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
441 struct ahci_ioports *pp = &uc_priv->port[port];
442 struct sata_port_regs *port_mmio = pp->port_mmio;
445 int timeout = 10000000;
447 debug("Enter start port: %d\n", port);
448 port_status = readl(&port_mmio->ssts);
449 debug("Port %d status: %x\n", port, port_status);
450 if ((port_status & 0xf) != 0x03) {
451 printf("No Link on this port!\n");
455 mem = (u32)malloc(AHCI_PORT_PRIV_DMA_SZ + 1024);
457 printf("No mem for table!\n");
461 mem = (mem + 0x400) & (~0x3ff); /* Aligned to 1024-bytes */
462 memset((u8 *)mem, 0, AHCI_PORT_PRIV_DMA_SZ);
465 * First item in chunk of DMA memory: 32-slot command table,
466 * 32 bytes each in size
468 pp->cmd_slot = (struct ahci_cmd_hdr *)mem;
469 debug("cmd_slot = 0x%x\n", (unsigned int) pp->cmd_slot);
470 mem += (AHCI_CMD_SLOT_SZ * DWC_AHSATA_MAX_CMD_SLOTS);
473 * Second item: Received-FIS area, 256-Byte aligned
476 mem += AHCI_RX_FIS_SZ;
479 * Third item: data area for storing a single command
480 * and its scatter-gather table
483 debug("cmd_tbl_dma = 0x%lx\n", pp->cmd_tbl);
485 mem += AHCI_CMD_TBL_HDR;
487 writel_with_flush(0x00004444, &port_mmio->dmacr);
488 pp->cmd_tbl_sg = (struct ahci_sg *)mem;
489 writel_with_flush((u32)pp->cmd_slot, &port_mmio->clb);
490 writel_with_flush(pp->rx_fis, &port_mmio->fb);
493 writel_with_flush((SATA_PORT_CMD_FRE | readl(&port_mmio->cmd)),
496 /* Wait device ready */
497 while ((readl(&port_mmio->tfd) & (SATA_PORT_TFD_STS_ERR |
498 SATA_PORT_TFD_STS_DRQ | SATA_PORT_TFD_STS_BSY))
502 debug("Device not ready for BSY, DRQ and"
507 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
508 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
509 PORT_CMD_START, &port_mmio->cmd);
511 debug("Exit start port %d\n", port);
516 static void dwc_ahsata_print_info(struct blk_desc *pdev)
518 printf("SATA Device Info:\n\r");
519 printf("S/N: %s\n\rProduct model number: %s\n\r"
520 "Firmware version: %s\n\rCapacity: " LBAFU " sectors\n\r",
521 pdev->product, pdev->vendor, pdev->revision, pdev->lba);
524 static void dwc_ahsata_identify(struct ahci_uc_priv *uc_priv, u16 *id)
526 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
527 struct sata_fis_h2d *cfis = &h2d;
528 u8 port = uc_priv->hard_port_no;
530 memset(cfis, 0, sizeof(struct sata_fis_h2d));
532 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
533 cfis->pm_port_c = 0x80; /* is command */
534 cfis->command = ATA_CMD_ID_ATA;
536 ahci_exec_ata_cmd(uc_priv, port, cfis, (u8 *)id, ATA_ID_WORDS * 2,
538 ata_swap_buf_le16(id, ATA_ID_WORDS);
541 static void dwc_ahsata_xfer_mode(struct ahci_uc_priv *uc_priv, u16 *id)
543 uc_priv->pio_mask = id[ATA_ID_PIO_MODES];
544 uc_priv->udma_mask = id[ATA_ID_UDMA_MODES];
545 debug("pio %04x, udma %04x\n\r", uc_priv->pio_mask, uc_priv->udma_mask);
548 static u32 dwc_ahsata_rw_cmd(struct ahci_uc_priv *uc_priv, u32 start,
549 u32 blkcnt, u8 *buffer, int is_write)
551 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
552 struct sata_fis_h2d *cfis = &h2d;
553 u8 port = uc_priv->hard_port_no;
558 memset(cfis, 0, sizeof(struct sata_fis_h2d));
560 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
561 cfis->pm_port_c = 0x80; /* is command */
562 cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ;
563 cfis->device = ATA_LBA;
565 cfis->device |= (block >> 24) & 0xf;
566 cfis->lba_high = (block >> 16) & 0xff;
567 cfis->lba_mid = (block >> 8) & 0xff;
568 cfis->lba_low = block & 0xff;
569 cfis->sector_count = (u8)(blkcnt & 0xff);
571 if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
572 ATA_SECT_SIZE * blkcnt, is_write) > 0)
578 static void dwc_ahsata_flush_cache(struct ahci_uc_priv *uc_priv)
580 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
581 struct sata_fis_h2d *cfis = &h2d;
582 u8 port = uc_priv->hard_port_no;
584 memset(cfis, 0, sizeof(struct sata_fis_h2d));
586 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
587 cfis->pm_port_c = 0x80; /* is command */
588 cfis->command = ATA_CMD_FLUSH;
590 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, 0);
593 static u32 dwc_ahsata_rw_cmd_ext(struct ahci_uc_priv *uc_priv, u32 start,
594 lbaint_t blkcnt, u8 *buffer, int is_write)
596 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
597 struct sata_fis_h2d *cfis = &h2d;
598 u8 port = uc_priv->hard_port_no;
603 memset(cfis, 0, sizeof(struct sata_fis_h2d));
605 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
606 cfis->pm_port_c = 0x80; /* is command */
608 cfis->command = (is_write) ? ATA_CMD_WRITE_EXT
611 cfis->lba_high_exp = (block >> 40) & 0xff;
612 cfis->lba_mid_exp = (block >> 32) & 0xff;
613 cfis->lba_low_exp = (block >> 24) & 0xff;
614 cfis->lba_high = (block >> 16) & 0xff;
615 cfis->lba_mid = (block >> 8) & 0xff;
616 cfis->lba_low = block & 0xff;
617 cfis->device = ATA_LBA;
618 cfis->sector_count_exp = (blkcnt >> 8) & 0xff;
619 cfis->sector_count = blkcnt & 0xff;
621 if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
622 ATA_SECT_SIZE * blkcnt, is_write) > 0)
628 static void dwc_ahsata_flush_cache_ext(struct ahci_uc_priv *uc_priv)
630 struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
631 struct sata_fis_h2d *cfis = &h2d;
632 u8 port = uc_priv->hard_port_no;
634 memset(cfis, 0, sizeof(struct sata_fis_h2d));
636 cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
637 cfis->pm_port_c = 0x80; /* is command */
638 cfis->command = ATA_CMD_FLUSH_EXT;
640 ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, 0);
643 static void dwc_ahsata_init_wcache(struct ahci_uc_priv *uc_priv, u16 *id)
645 if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
646 uc_priv->flags |= SATA_FLAG_WCACHE;
647 if (ata_id_has_flush(id))
648 uc_priv->flags |= SATA_FLAG_FLUSH;
649 if (ata_id_has_flush_ext(id))
650 uc_priv->flags |= SATA_FLAG_FLUSH_EXT;
653 static u32 ata_low_level_rw_lba48(struct ahci_uc_priv *uc_priv, u32 blknr,
654 lbaint_t blkcnt, const void *buffer,
665 max_blks = ATA_MAX_SECTORS_LBA48;
668 if (blks > max_blks) {
669 if (max_blks != dwc_ahsata_rw_cmd_ext(uc_priv, start,
675 addr += ATA_SECT_SIZE * max_blks;
677 if (blks != dwc_ahsata_rw_cmd_ext(uc_priv, start, blks,
682 addr += ATA_SECT_SIZE * blks;
689 static u32 ata_low_level_rw_lba28(struct ahci_uc_priv *uc_priv, u32 blknr,
690 lbaint_t blkcnt, const void *buffer,
701 max_blks = ATA_MAX_SECTORS;
703 if (blks > max_blks) {
704 if (max_blks != dwc_ahsata_rw_cmd(uc_priv, start,
710 addr += ATA_SECT_SIZE * max_blks;
712 if (blks != dwc_ahsata_rw_cmd(uc_priv, start, blks,
717 addr += ATA_SECT_SIZE * blks;
724 static int dwc_ahci_start_ports(struct ahci_uc_priv *uc_priv)
729 linkmap = uc_priv->link_port_map;
732 printf("No port device detected!\n");
736 for (i = 0; i < uc_priv->n_ports; i++) {
737 if ((linkmap >> i) && ((linkmap >> i) & 0x01)) {
738 if (ahci_port_start(uc_priv, (u8)i)) {
739 printf("Can not start port %d\n", i);
742 uc_priv->hard_port_no = i;
750 static int dwc_ahsata_scan_common(struct ahci_uc_priv *uc_priv,
751 struct blk_desc *pdev)
753 u8 serial[ATA_ID_SERNO_LEN + 1] = { 0 };
754 u8 firmware[ATA_ID_FW_REV_LEN + 1] = { 0 };
755 u8 product[ATA_ID_PROD_LEN + 1] = { 0 };
756 u8 port = uc_priv->hard_port_no;
757 ALLOC_CACHE_ALIGN_BUFFER(u16, id, ATA_ID_WORDS);
759 /* Identify device to get information */
760 dwc_ahsata_identify(uc_priv, id);
763 ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial));
764 memcpy(pdev->product, serial, sizeof(serial));
766 /* Firmware version */
767 ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware));
768 memcpy(pdev->revision, firmware, sizeof(firmware));
771 ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product));
772 memcpy(pdev->vendor, product, sizeof(product));
775 pdev->lba = ata_id_n_sectors(id);
777 pdev->type = DEV_TYPE_HARDDISK;
778 pdev->blksz = ATA_SECT_SIZE;
781 /* Check if support LBA48 */
782 if (ata_id_has_lba48(id)) {
784 debug("Device support LBA48\n\r");
787 /* Get the NCQ queue depth from device */
788 uc_priv->flags &= (~SATA_FLAG_Q_DEP_MASK);
789 uc_priv->flags |= ata_id_queue_depth(id);
791 /* Get the xfer mode from device */
792 dwc_ahsata_xfer_mode(uc_priv, id);
794 /* Get the write cache status from device */
795 dwc_ahsata_init_wcache(uc_priv, id);
797 /* Set the xfer mode to highest speed */
798 ahci_set_feature(uc_priv, port);
800 dwc_ahsata_print_info(pdev);
806 * SATA interface between low level driver and command layer
808 static ulong sata_read_common(struct ahci_uc_priv *uc_priv,
809 struct blk_desc *desc, ulong blknr,
810 lbaint_t blkcnt, void *buffer)
815 rc = ata_low_level_rw_lba48(uc_priv, blknr, blkcnt, buffer,
818 rc = ata_low_level_rw_lba28(uc_priv, blknr, blkcnt, buffer,
824 static ulong sata_write_common(struct ahci_uc_priv *uc_priv,
825 struct blk_desc *desc, ulong blknr,
826 lbaint_t blkcnt, const void *buffer)
829 u32 flags = uc_priv->flags;
832 rc = ata_low_level_rw_lba48(uc_priv, blknr, blkcnt, buffer,
834 if ((flags & SATA_FLAG_WCACHE) && (flags & SATA_FLAG_FLUSH_EXT))
835 dwc_ahsata_flush_cache_ext(uc_priv);
837 rc = ata_low_level_rw_lba28(uc_priv, blknr, blkcnt, buffer,
839 if ((flags & SATA_FLAG_WCACHE) && (flags & SATA_FLAG_FLUSH))
840 dwc_ahsata_flush_cache(uc_priv);
846 #if !CONFIG_IS_ENABLED(AHCI)
847 static int ahci_init_one(int pdev)
850 struct ahci_uc_priv *uc_priv = NULL;
852 uc_priv = malloc(sizeof(struct ahci_uc_priv));
856 memset(uc_priv, 0, sizeof(struct ahci_uc_priv));
859 uc_priv->host_flags = ATA_FLAG_SATA
865 uc_priv->mmio_base = (void __iomem *)CONFIG_DWC_AHSATA_BASE_ADDR;
867 /* initialize adapter */
868 rc = ahci_host_init(uc_priv);
872 ahci_print_info(uc_priv);
874 /* Save the uc_private struct to block device struct */
875 sata_dev_desc[pdev].priv = uc_priv;
885 int init_sata(int dev)
887 struct ahci_uc_priv *uc_priv = NULL;
889 #if defined(CONFIG_MX6)
890 if (!is_mx6dq() && !is_mx6dqp())
893 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
894 printf("The sata index %d is out of ranges\n\r", dev);
900 uc_priv = sata_dev_desc[dev].priv;
902 return dwc_ahci_start_ports(uc_priv) ? 1 : 0;
905 int reset_sata(int dev)
907 struct ahci_uc_priv *uc_priv;
908 struct sata_host_regs *host_mmio;
910 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
911 printf("The sata index %d is out of ranges\n\r", dev);
915 uc_priv = sata_dev_desc[dev].priv;
917 /* not initialized, so nothing to reset */
920 host_mmio = uc_priv->mmio_base;
921 setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR);
922 while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR)
926 memset(&sata_dev_desc[dev], 0, sizeof(struct blk_desc));
931 int sata_port_status(int dev, int port)
933 struct sata_port_regs *port_mmio;
934 struct ahci_uc_priv *uc_priv = NULL;
936 if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1))
939 if (sata_dev_desc[dev].priv == NULL)
942 uc_priv = sata_dev_desc[dev].priv;
943 port_mmio = uc_priv->port[port].port_mmio;
945 return readl(&port_mmio->ssts) & SATA_PORT_SSTS_DET_MASK;
949 * SATA interface between low level driver and command layer
951 ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
953 struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
955 return sata_read_common(uc_priv, &sata_dev_desc[dev], blknr, blkcnt,
959 ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer)
961 struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
963 return sata_write_common(uc_priv, &sata_dev_desc[dev], blknr, blkcnt,
967 int scan_sata(int dev)
969 struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
970 struct blk_desc *pdev = &sata_dev_desc[dev];
972 return dwc_ahsata_scan_common(uc_priv, pdev);
974 #endif /* CONFIG_IS_ENABLED(AHCI) */
976 #if CONFIG_IS_ENABLED(AHCI)
978 int dwc_ahsata_port_status(struct udevice *dev, int port)
980 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
981 struct sata_port_regs *port_mmio;
983 port_mmio = uc_priv->port[port].port_mmio;
984 return readl(&port_mmio->ssts) & SATA_PORT_SSTS_DET_MASK ? 0 : -ENXIO;
987 int dwc_ahsata_bus_reset(struct udevice *dev)
989 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
990 struct sata_host_regs *host_mmio = uc_priv->mmio_base;
992 setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR);
993 while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR)
999 int dwc_ahsata_scan(struct udevice *dev)
1001 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
1002 struct blk_desc *desc;
1003 struct udevice *blk;
1007 * Create only one block device and do detection
1008 * to make sure that there won't be a lot of
1009 * block devices created
1011 device_find_first_child(dev, &blk);
1013 ret = blk_create_devicef(dev, "dwc_ahsata_blk", "blk",
1014 IF_TYPE_SATA, -1, 512, 0, &blk);
1016 debug("Can't create device\n");
1021 desc = dev_get_uclass_platdata(blk);
1022 ret = dwc_ahsata_scan_common(uc_priv, desc);
1024 debug("%s: Failed to scan bus\n", __func__);
1031 int dwc_ahsata_probe(struct udevice *dev)
1033 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
1036 #if defined(CONFIG_MX6)
1039 uc_priv->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
1040 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NO_ATAPI;
1041 uc_priv->mmio_base = (void __iomem *)dev_read_addr(dev);
1043 /* initialize adapter */
1044 ret = ahci_host_init(uc_priv);
1048 ahci_print_info(uc_priv);
1050 return dwc_ahci_start_ports(uc_priv);
1053 static ulong dwc_ahsata_read(struct udevice *blk, lbaint_t blknr,
1054 lbaint_t blkcnt, void *buffer)
1056 struct blk_desc *desc = dev_get_uclass_platdata(blk);
1057 struct udevice *dev = dev_get_parent(blk);
1058 struct ahci_uc_priv *uc_priv;
1060 uc_priv = dev_get_uclass_priv(dev);
1061 return sata_read_common(uc_priv, desc, blknr, blkcnt, buffer);
1064 static ulong dwc_ahsata_write(struct udevice *blk, lbaint_t blknr,
1065 lbaint_t blkcnt, const void *buffer)
1067 struct blk_desc *desc = dev_get_uclass_platdata(blk);
1068 struct udevice *dev = dev_get_parent(blk);
1069 struct ahci_uc_priv *uc_priv;
1071 uc_priv = dev_get_uclass_priv(dev);
1072 return sata_write_common(uc_priv, desc, blknr, blkcnt, buffer);
1075 static const struct blk_ops dwc_ahsata_blk_ops = {
1076 .read = dwc_ahsata_read,
1077 .write = dwc_ahsata_write,
1080 U_BOOT_DRIVER(dwc_ahsata_blk) = {
1081 .name = "dwc_ahsata_blk",
1083 .ops = &dwc_ahsata_blk_ops,
1086 #if CONFIG_IS_ENABLED(DWC_AHSATA_AHCI)
1087 struct ahci_ops dwc_ahsata_ahci_ops = {
1088 .port_status = dwc_ahsata_port_status,
1089 .reset = dwc_ahsata_bus_reset,
1090 .scan = dwc_ahsata_scan,
1093 static const struct udevice_id dwc_ahsata_ahci_ids[] = {
1094 { .compatible = "fsl,imx6q-ahci" },
1098 U_BOOT_DRIVER(dwc_ahsata_ahci) = {
1099 .name = "dwc_ahsata_ahci",
1101 .of_match = dwc_ahsata_ahci_ids,
1102 .ops = &dwc_ahsata_ahci_ops,
1103 .probe = dwc_ahsata_probe,