1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) Freescale Semiconductor, Inc. 2006.
7 * with the reference on libata and ahci drvier in kernel
9 * This driver provides a SCSI interface to SATA.
15 #include <linux/bitops.h>
16 #include <linux/delay.h>
21 #include <asm/processor.h>
22 #include <linux/errno.h>
29 #include <linux/ctype.h>
31 #include <dm/device-internal.h>
34 static int ata_io_flush(struct ahci_uc_priv *uc_priv, u8 port);
36 #define writel_with_flush(a,b) do { writel(a,b); readl(b); } while (0)
39 * Some controllers limit number of blocks they can read/write at once.
40 * Contemporary SSD devices work much faster if the read/write size is aligned
41 * to a power of 2. Let's set default to 128 and allowing to be overwritten if
44 #ifndef MAX_SATA_BLOCKS_READ_WRITE
45 #define MAX_SATA_BLOCKS_READ_WRITE 0x80
48 /* Maximum timeouts for each event */
49 #define WAIT_MS_SPINUP 20000
50 #define WAIT_MS_DATAIO 10000
51 #define WAIT_MS_FLUSH 5000
52 #define WAIT_MS_LINKUP 200
54 #define AHCI_CAP_S64A BIT(31)
56 __weak void __iomem *ahci_port_base(void __iomem *base, u32 port)
58 return base + 0x100 + (port * 0x80);
61 #define msleep(a) udelay(a * 1000)
63 static void ahci_dcache_flush_range(unsigned long begin, unsigned long len)
65 const unsigned long start = begin;
66 const unsigned long end = start + len;
68 debug("%s: flush dcache: [%#lx, %#lx)\n", __func__, start, end);
69 flush_dcache_range(start, end);
73 * SATA controller DMAs to physical RAM. Ensure data from the
74 * controller is invalidated from dcache; next access comes from
77 static void ahci_dcache_invalidate_range(unsigned long begin, unsigned long len)
79 const unsigned long start = begin;
80 const unsigned long end = start + len;
82 debug("%s: invalidate dcache: [%#lx, %#lx)\n", __func__, start, end);
83 invalidate_dcache_range(start, end);
87 * Ensure data for SATA controller is flushed out of dcache and
88 * written to physical memory.
90 static void ahci_dcache_flush_sata_cmd(struct ahci_ioports *pp)
92 ahci_dcache_flush_range((unsigned long)pp->cmd_slot,
93 AHCI_PORT_PRIV_DMA_SZ);
96 static int waiting_for_cmd_completed(void __iomem *offset,
103 for (i = 0; ((status = readl(offset)) & sign) && i < timeout_msec; i++)
106 return (i < timeout_msec) ? 0 : -1;
109 int __weak ahci_link_up(struct ahci_uc_priv *uc_priv, int port)
113 void __iomem *port_mmio = uc_priv->port[port].port_mmio;
116 * Bring up SATA link.
117 * SATA link bringup time is usually less than 1 ms; only very
118 * rarely has it taken between 1-2 ms. Never seen it above 2 ms.
120 while (j < WAIT_MS_LINKUP) {
121 tmp = readl(port_mmio + PORT_SCR_STAT);
122 tmp &= PORT_SCR_STAT_DET_MASK;
123 if (tmp == PORT_SCR_STAT_DET_PHYRDY)
131 #ifdef CONFIG_SUNXI_AHCI
132 /* The sunxi AHCI controller requires this undocumented setup */
133 static void sunxi_dma_init(void __iomem *port_mmio)
135 clrsetbits_le32(port_mmio + PORT_P0DMACR, 0x0000ff00, 0x00004400);
139 int ahci_reset(void __iomem *base)
142 u32 __iomem *host_ctl_reg = base + HOST_CTL;
143 u32 tmp = readl(host_ctl_reg); /* global controller reset */
145 if ((tmp & HOST_RESET) == 0)
146 writel_with_flush(tmp | HOST_RESET, host_ctl_reg);
149 * reset must complete within 1 second, or
150 * the hardware should be considered fried.
154 tmp = readl(host_ctl_reg);
156 } while ((i > 0) && (tmp & HOST_RESET));
159 printf("controller reset failed (0x%x)\n", tmp);
166 static int ahci_host_init(struct ahci_uc_priv *uc_priv)
168 void __iomem *mmio = uc_priv->mmio_base;
169 u32 tmp, cap_save, cmd;
171 void __iomem *port_mmio;
174 debug("ahci_host_init: start\n");
176 cap_save = readl(mmio + HOST_CAP);
177 cap_save &= ((1 << 28) | (1 << 17));
178 cap_save |= (1 << 27); /* Staggered Spin-up. Not needed. */
180 ret = ahci_reset(uc_priv->mmio_base);
184 writel_with_flush(HOST_AHCI_EN, mmio + HOST_CTL);
185 writel(cap_save, mmio + HOST_CAP);
186 writel_with_flush(0xf, mmio + HOST_PORTS_IMPL);
188 uc_priv->cap = readl(mmio + HOST_CAP);
189 uc_priv->port_map = readl(mmio + HOST_PORTS_IMPL);
190 port_map = uc_priv->port_map;
191 uc_priv->n_ports = (uc_priv->cap & 0x1f) + 1;
193 debug("cap 0x%x port_map 0x%x n_ports %d\n",
194 uc_priv->cap, uc_priv->port_map, uc_priv->n_ports);
196 for (i = 0; i < uc_priv->n_ports; i++) {
197 if (!(port_map & (1 << i)))
199 uc_priv->port[i].port_mmio = ahci_port_base(mmio, i);
200 port_mmio = (u8 *)uc_priv->port[i].port_mmio;
202 /* make sure port is not active */
203 tmp = readl(port_mmio + PORT_CMD);
204 if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
205 PORT_CMD_FIS_RX | PORT_CMD_START)) {
206 debug("Port %d is active. Deactivating.\n", i);
207 tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
208 PORT_CMD_FIS_RX | PORT_CMD_START);
209 writel_with_flush(tmp, port_mmio + PORT_CMD);
211 /* spec says 500 msecs for each bit, so
212 * this is slightly incorrect.
217 #ifdef CONFIG_SUNXI_AHCI
218 sunxi_dma_init(port_mmio);
221 /* Add the spinup command to whatever mode bits may
222 * already be on in the command register.
224 cmd = readl(port_mmio + PORT_CMD);
225 cmd |= PORT_CMD_SPIN_UP;
226 writel_with_flush(cmd, port_mmio + PORT_CMD);
228 /* Bring up SATA link. */
229 ret = ahci_link_up(uc_priv, i);
231 printf("SATA link %d timeout.\n", i);
234 debug("SATA link ok.\n");
237 /* Clear error status */
238 tmp = readl(port_mmio + PORT_SCR_ERR);
240 writel(tmp, port_mmio + PORT_SCR_ERR);
242 debug("Spinning up device on SATA port %d... ", i);
245 while (j < WAIT_MS_SPINUP) {
246 tmp = readl(port_mmio + PORT_TFDATA);
247 if (!(tmp & (ATA_BUSY | ATA_DRQ)))
250 tmp = readl(port_mmio + PORT_SCR_STAT);
251 tmp &= PORT_SCR_STAT_DET_MASK;
252 if (tmp == PORT_SCR_STAT_DET_PHYRDY)
257 tmp = readl(port_mmio + PORT_SCR_STAT) & PORT_SCR_STAT_DET_MASK;
258 if (tmp == PORT_SCR_STAT_DET_COMINIT) {
259 debug("SATA link %d down (COMINIT received), retrying...\n", i);
264 printf("Target spinup took %d ms.\n", j);
265 if (j == WAIT_MS_SPINUP)
270 tmp = readl(port_mmio + PORT_SCR_ERR);
271 debug("PORT_SCR_ERR 0x%x\n", tmp);
272 writel(tmp, port_mmio + PORT_SCR_ERR);
274 /* ack any pending irq events for this port */
275 tmp = readl(port_mmio + PORT_IRQ_STAT);
276 debug("PORT_IRQ_STAT 0x%x\n", tmp);
278 writel(tmp, port_mmio + PORT_IRQ_STAT);
280 writel(1 << i, mmio + HOST_IRQ_STAT);
282 /* register linkup ports */
283 tmp = readl(port_mmio + PORT_SCR_STAT);
284 debug("SATA port %d status: 0x%x\n", i, tmp);
285 if ((tmp & PORT_SCR_STAT_DET_MASK) == PORT_SCR_STAT_DET_PHYRDY)
286 uc_priv->link_port_map |= (0x01 << i);
289 tmp = readl(mmio + HOST_CTL);
290 debug("HOST_CTL 0x%x\n", tmp);
291 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
292 tmp = readl(mmio + HOST_CTL);
293 debug("HOST_CTL 0x%x\n", tmp);
297 static void ahci_print_info(struct ahci_uc_priv *uc_priv)
299 void __iomem *mmio = uc_priv->mmio_base;
300 u32 vers, cap, cap2, impl, speed;
304 vers = readl(mmio + HOST_VERSION);
306 cap2 = readl(mmio + HOST_CAP2);
307 impl = uc_priv->port_map;
309 speed = (cap >> 20) & 0xf;
320 printf("AHCI %02x%02x.%02x%02x "
321 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
326 ((cap >> 8) & 0x1f) + 1, (cap & 0x1f) + 1, speed_s, impl, scc_s);
332 cap & (1 << 31) ? "64bit " : "",
333 cap & (1 << 30) ? "ncq " : "",
334 cap & (1 << 28) ? "ilck " : "",
335 cap & (1 << 27) ? "stag " : "",
336 cap & (1 << 26) ? "pm " : "",
337 cap & (1 << 25) ? "led " : "",
338 cap & (1 << 24) ? "clo " : "",
339 cap & (1 << 19) ? "nz " : "",
340 cap & (1 << 18) ? "only " : "",
341 cap & (1 << 17) ? "pmp " : "",
342 cap & (1 << 16) ? "fbss " : "",
343 cap & (1 << 15) ? "pio " : "",
344 cap & (1 << 14) ? "slum " : "",
345 cap & (1 << 13) ? "part " : "",
346 cap & (1 << 7) ? "ccc " : "",
347 cap & (1 << 6) ? "ems " : "",
348 cap & (1 << 5) ? "sxs " : "",
349 cap2 & (1 << 2) ? "apst " : "",
350 cap2 & (1 << 1) ? "nvmp " : "",
351 cap2 & (1 << 0) ? "boh " : "");
354 static int ahci_init_one(struct ahci_uc_priv *uc_priv, struct udevice *dev)
360 uc_priv->host_flags = ATA_FLAG_SATA
365 uc_priv->pio_mask = 0x1f;
366 uc_priv->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
368 struct scsi_plat *plat = dev_get_uclass_plat(dev);
369 uc_priv->mmio_base = (void *)plat->base;
371 debug("ahci mmio_base=0x%p\n", uc_priv->mmio_base);
372 /* initialize adapter */
373 rc = ahci_host_init(uc_priv);
377 ahci_print_info(uc_priv);
385 #define MAX_DATA_BYTE_COUNT (4*1024*1024)
387 static int ahci_fill_sg(struct ahci_uc_priv *uc_priv, u8 port,
388 unsigned char *buf, int buf_len)
390 struct ahci_ioports *pp = &(uc_priv->port[port]);
391 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
392 phys_addr_t pa = virt_to_phys(buf);
396 sg_count = ((buf_len - 1) / MAX_DATA_BYTE_COUNT) + 1;
397 if (sg_count > AHCI_MAX_SG) {
398 printf("Error:Too much sg!\n");
402 for (i = 0; i < sg_count; i++) {
403 ahci_sg->addr = cpu_to_le32(lower_32_bits(pa));
404 ahci_sg->addr_hi = cpu_to_le32(upper_32_bits(pa));
405 if (ahci_sg->addr_hi && !(uc_priv->cap & AHCI_CAP_S64A)) {
406 printf("Error: DMA address too high\n");
409 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
410 (buf_len < MAX_DATA_BYTE_COUNT ?
412 (MAX_DATA_BYTE_COUNT - 1)));
414 buf_len -= MAX_DATA_BYTE_COUNT;
415 pa += MAX_DATA_BYTE_COUNT;
421 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 opts)
423 phys_addr_t pa = virt_to_phys((void *)pp->cmd_tbl);
425 pp->cmd_slot->opts = cpu_to_le32(opts);
426 pp->cmd_slot->status = 0;
427 pp->cmd_slot->tbl_addr = cpu_to_le32(lower_32_bits(pa));
428 #ifdef CONFIG_PHYS_64BIT
429 pp->cmd_slot->tbl_addr_hi = cpu_to_le32(upper_32_bits(pa));
433 static int wait_spinup(void __iomem *port_mmio)
438 start = get_timer(0);
440 tf_data = readl(port_mmio + PORT_TFDATA);
441 if (!(tf_data & ATA_BUSY))
443 } while (get_timer(start) < WAIT_MS_SPINUP);
448 static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
450 struct ahci_ioports *pp = &(uc_priv->port[port]);
451 void __iomem *port_mmio = pp->port_mmio;
456 debug("Enter start port: %d\n", port);
457 port_status = readl(port_mmio + PORT_SCR_STAT);
458 debug("Port %d status: %x\n", port, port_status);
459 if ((port_status & 0xf) != 0x03) {
460 printf("No Link on this port!\n");
464 mem = memalign(2048, AHCI_PORT_PRIV_DMA_SZ);
467 printf("%s: No mem for table!\n", __func__);
470 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
473 * First item in chunk of DMA memory: 32-slot command table,
474 * 32 bytes each in size
477 (struct ahci_cmd_hdr *)(uintptr_t)virt_to_phys((void *)mem);
478 debug("cmd_slot = %p\n", pp->cmd_slot);
479 mem += (AHCI_CMD_SLOT_SZ + 224);
482 * Second item: Received-FIS area
484 pp->rx_fis = virt_to_phys((void *)mem);
485 mem += AHCI_RX_FIS_SZ;
488 * Third item: data area for storing a single command
489 * and its scatter-gather table
491 pp->cmd_tbl = virt_to_phys((void *)mem);
492 debug("cmd_tbl_dma = %lx\n", pp->cmd_tbl);
494 mem += AHCI_CMD_TBL_HDR;
496 (struct ahci_sg *)(uintptr_t)virt_to_phys((void *)mem);
498 dma_addr = (ulong)pp->cmd_slot;
499 writel_with_flush(dma_addr, port_mmio + PORT_LST_ADDR);
500 writel_with_flush(dma_addr >> 32, port_mmio + PORT_LST_ADDR_HI);
501 dma_addr = (ulong)pp->rx_fis;
502 writel_with_flush(dma_addr, port_mmio + PORT_FIS_ADDR);
503 writel_with_flush(dma_addr >> 32, port_mmio + PORT_FIS_ADDR_HI);
505 #ifdef CONFIG_SUNXI_AHCI
506 sunxi_dma_init(port_mmio);
509 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
510 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
511 PORT_CMD_START, port_mmio + PORT_CMD);
513 debug("Exit start port %d\n", port);
516 * Make sure interface is not busy based on error and status
517 * information from task file data register before proceeding
519 return wait_spinup(port_mmio);
522 static int ahci_device_data_io(struct ahci_uc_priv *uc_priv, u8 port, u8 *fis,
523 int fis_len, u8 *buf, int buf_len, u8 is_write)
526 struct ahci_ioports *pp = &(uc_priv->port[port]);
527 void __iomem *port_mmio = pp->port_mmio;
532 debug("Enter %s: for port %d\n", __func__, port);
534 if (port > uc_priv->n_ports) {
535 printf("Invalid port number %d\n", port);
539 port_status = readl(port_mmio + PORT_SCR_STAT);
540 if ((port_status & 0xf) != 0x03) {
541 debug("No Link on port %d!\n", port);
545 memcpy((unsigned char *)pp->cmd_tbl, fis, fis_len);
547 sg_count = ahci_fill_sg(uc_priv, port, buf, buf_len);
548 opts = (fis_len >> 2) | (sg_count << 16) | (is_write << 6);
549 ahci_fill_cmd_slot(pp, opts);
551 ahci_dcache_flush_sata_cmd(pp);
552 ahci_dcache_flush_range((unsigned long)buf, (unsigned long)buf_len);
554 writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
556 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
557 WAIT_MS_DATAIO, 0x1)) {
558 printf("timeout exit!\n");
562 ahci_dcache_invalidate_range((unsigned long)buf,
563 (unsigned long)buf_len);
564 debug("%s: %d byte transferred.\n", __func__,
565 le32_to_cpu(pp->cmd_slot->status));
570 static char *ata_id_strcpy(u16 *target, u16 *src, int len)
573 for (i = 0; i < len / 2; i++)
574 target[i] = swab16(src[i]);
575 return (char *)target;
579 * SCSI INQUIRY command operation.
581 static int ata_scsiop_inquiry(struct ahci_uc_priv *uc_priv,
582 struct scsi_cmd *pccb)
584 static const u8 hdr[] = {
587 0x5, /* claim SPC-3 version compatibility */
593 ALLOC_CACHE_ALIGN_BUFFER(u16, tmpid, ATA_ID_WORDS);
596 /* Clean ccb data buffer */
597 memset(pccb->pdata, 0, pccb->datalen);
599 memcpy(pccb->pdata, hdr, sizeof(hdr));
601 if (pccb->datalen <= 35)
604 memset(fis, 0, sizeof(fis));
605 /* Construct the FIS */
606 fis[0] = 0x27; /* Host to device FIS. */
607 fis[1] = 1 << 7; /* Command FIS. */
608 fis[2] = ATA_CMD_ID_ATA; /* Command byte. */
610 /* Read id from sata */
613 /* If this port number is not valid, give up */
614 if (!(uc_priv->port_map & (1 << port))) {
615 debug("Port %x not valid in map %x\n", port, uc_priv->port_map);
619 if (ahci_device_data_io(uc_priv, port, (u8 *)&fis, sizeof(fis),
620 (u8 *)tmpid, ATA_ID_WORDS * 2, 0)) {
621 debug("scsi_ahci: SCSI inquiry command failure.\n");
625 if (!uc_priv->ataid[port]) {
626 uc_priv->ataid[port] = malloc(ATA_ID_WORDS * 2);
627 if (!uc_priv->ataid[port]) {
628 printf("%s: No memory for ataid[port]\n", __func__);
633 idbuf = uc_priv->ataid[port];
635 memcpy(idbuf, tmpid, ATA_ID_WORDS * 2);
636 ata_swap_buf_le16(idbuf, ATA_ID_WORDS);
638 memcpy(&pccb->pdata[8], "ATA ", 8);
639 ata_id_strcpy((u16 *)&pccb->pdata[16], &idbuf[ATA_ID_PROD], 16);
640 ata_id_strcpy((u16 *)&pccb->pdata[32], &idbuf[ATA_ID_FW_REV], 4);
649 * SCSI READ10/WRITE10 command operation.
651 static int ata_scsiop_read_write(struct ahci_uc_priv *uc_priv,
652 struct scsi_cmd *pccb, u8 is_write)
657 u8 *user_buffer = pccb->pdata;
658 u32 user_buffer_size = pccb->datalen;
660 /* Retrieve the base LBA number from the ccb structure. */
661 if (pccb->cmd[0] == SCSI_READ16) {
662 memcpy(&lba, pccb->cmd + 2, 8);
663 lba = be64_to_cpu(lba);
666 memcpy(&temp, pccb->cmd + 2, 4);
667 lba = be32_to_cpu(temp);
671 * Retrieve the base LBA number and the block count from
674 * For 10-byte and 16-byte SCSI R/W commands, transfer
675 * length 0 means transfer 0 block of data.
676 * However, for ATA R/W commands, sector count 0 means
677 * 256 or 65536 sectors, not 0 sectors as in SCSI.
679 * WARNING: one or two older ATA drives treat 0 as 0...
681 if (pccb->cmd[0] == SCSI_READ16)
682 blocks = (((u16)pccb->cmd[13]) << 8) | ((u16) pccb->cmd[14]);
684 blocks = (((u16)pccb->cmd[7]) << 8) | ((u16) pccb->cmd[8]);
686 debug("scsi_ahci: %s %u blocks starting from lba 0x" LBAFU "\n",
687 is_write ? "write" : "read", blocks, lba);
690 memset(fis, 0, sizeof(fis));
691 fis[0] = 0x27; /* Host to device FIS. */
692 fis[1] = 1 << 7; /* Command FIS. */
693 /* Command byte (read/write). */
694 fis[2] = is_write ? ATA_CMD_WRITE_EXT : ATA_CMD_READ_EXT;
697 u16 now_blocks; /* number of blocks per iteration */
698 u32 transfer_size; /* number of bytes per iteration */
700 now_blocks = min((u16)MAX_SATA_BLOCKS_READ_WRITE, blocks);
702 transfer_size = ATA_SECT_SIZE * now_blocks;
703 if (transfer_size > user_buffer_size) {
704 printf("scsi_ahci: Error: buffer too small.\n");
709 * LBA48 SATA command but only use 32bit address range within
710 * that (unless we've enabled 64bit LBA support). The next
711 * smaller command range (28bit) is too small.
713 fis[4] = (lba >> 0) & 0xff;
714 fis[5] = (lba >> 8) & 0xff;
715 fis[6] = (lba >> 16) & 0xff;
716 fis[7] = 1 << 6; /* device reg: set LBA mode */
717 fis[8] = ((lba >> 24) & 0xff);
718 #ifdef CONFIG_SYS_64BIT_LBA
719 if (pccb->cmd[0] == SCSI_READ16) {
720 fis[9] = ((lba >> 32) & 0xff);
721 fis[10] = ((lba >> 40) & 0xff);
725 fis[3] = 0xe0; /* features */
727 /* Block (sector) count */
728 fis[12] = (now_blocks >> 0) & 0xff;
729 fis[13] = (now_blocks >> 8) & 0xff;
731 /* Read/Write from ahci */
732 if (ahci_device_data_io(uc_priv, pccb->target, (u8 *)&fis,
733 sizeof(fis), user_buffer, transfer_size,
735 debug("scsi_ahci: SCSI %s10 command failure.\n",
736 is_write ? "WRITE" : "READ");
740 /* If this transaction is a write, do a following flush.
741 * Writes in u-boot are so rare, and the logic to know when is
742 * the last write and do a flush only there is sufficiently
743 * difficult. Just do a flush after every write. This incurs,
744 * usually, one extra flush when the rare writes do happen.
747 if (-EIO == ata_io_flush(uc_priv, pccb->target))
750 user_buffer += transfer_size;
751 user_buffer_size -= transfer_size;
752 blocks -= now_blocks;
760 * SCSI READ CAPACITY10 command operation.
762 static int ata_scsiop_read_capacity10(struct ahci_uc_priv *uc_priv,
763 struct scsi_cmd *pccb)
769 if (!uc_priv->ataid[pccb->target]) {
770 printf("scsi_ahci: SCSI READ CAPACITY10 command failure. "
772 "\tPlease run SCSI command INQUIRY first!\n");
776 cap64 = ata_id_n_sectors(uc_priv->ataid[pccb->target]);
777 if (cap64 > 0x100000000ULL)
780 cap = cpu_to_be32(cap64);
781 memcpy(pccb->pdata, &cap, sizeof(cap));
783 block_size = cpu_to_be32((u32)512);
784 memcpy(&pccb->pdata[4], &block_size, 4);
790 * SCSI READ CAPACITY16 command operation.
792 static int ata_scsiop_read_capacity16(struct ahci_uc_priv *uc_priv,
793 struct scsi_cmd *pccb)
798 if (!uc_priv->ataid[pccb->target]) {
799 printf("scsi_ahci: SCSI READ CAPACITY16 command failure. "
801 "\tPlease run SCSI command INQUIRY first!\n");
805 cap = ata_id_n_sectors(uc_priv->ataid[pccb->target]);
806 cap = cpu_to_be64(cap);
807 memcpy(pccb->pdata, &cap, sizeof(cap));
809 block_size = cpu_to_be64((u64)512);
810 memcpy(&pccb->pdata[8], &block_size, 8);
816 * SCSI TEST UNIT READY command operation.
818 static int ata_scsiop_test_unit_ready(struct ahci_uc_priv *uc_priv,
819 struct scsi_cmd *pccb)
821 return (uc_priv->ataid[pccb->target]) ? 0 : -EPERM;
824 static int ahci_scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
826 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev->parent);
829 switch (pccb->cmd[0]) {
832 ret = ata_scsiop_read_write(uc_priv, pccb, 0);
835 ret = ata_scsiop_read_write(uc_priv, pccb, 1);
837 case SCSI_RD_CAPAC10:
838 ret = ata_scsiop_read_capacity10(uc_priv, pccb);
840 case SCSI_RD_CAPAC16:
841 ret = ata_scsiop_read_capacity16(uc_priv, pccb);
844 ret = ata_scsiop_test_unit_ready(uc_priv, pccb);
847 ret = ata_scsiop_inquiry(uc_priv, pccb);
850 printf("Unsupport SCSI command 0x%02x\n", pccb->cmd[0]);
855 debug("SCSI command 0x%02x ret errno %d\n", pccb->cmd[0], ret);
862 static int ahci_start_ports(struct ahci_uc_priv *uc_priv)
867 linkmap = uc_priv->link_port_map;
869 for (i = 0; i < uc_priv->n_ports; i++) {
870 if (((linkmap >> i) & 0x01)) {
871 if (ahci_port_start(uc_priv, (u8) i)) {
872 printf("Can not start port %d\n", i);
881 int ahci_init_one_dm(struct udevice *dev)
883 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
885 return ahci_init_one(uc_priv, dev);
888 int ahci_start_ports_dm(struct udevice *dev)
890 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
892 return ahci_start_ports(uc_priv);
896 * In the general case of generic rotating media it makes sense to have a
897 * flush capability. It probably even makes sense in the case of SSDs because
898 * one cannot always know for sure what kind of internal cache/flush mechanism
899 * is embodied therein. At first it was planned to invoke this after the last
900 * write to disk and before rebooting. In practice, knowing, a priori, which
901 * is the last write is difficult. Because writing to the disk in u-boot is
902 * very rare, this flush command will be invoked after every block write.
904 static int ata_io_flush(struct ahci_uc_priv *uc_priv, u8 port)
907 struct ahci_ioports *pp = &(uc_priv->port[port]);
908 void __iomem *port_mmio = pp->port_mmio;
909 u32 cmd_fis_len = 5; /* five dwords */
913 fis[0] = 0x27; /* Host to device FIS. */
914 fis[1] = 1 << 7; /* Command FIS. */
915 fis[2] = ATA_CMD_FLUSH_EXT;
917 memcpy((unsigned char *)pp->cmd_tbl, fis, 20);
918 ahci_fill_cmd_slot(pp, cmd_fis_len);
919 ahci_dcache_flush_sata_cmd(pp);
920 writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
922 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
923 WAIT_MS_FLUSH, 0x1)) {
924 debug("scsi_ahci: flush command timeout on port %d.\n", port);
931 static int ahci_scsi_bus_reset(struct udevice *dev)
933 /* Not implemented */
938 int ahci_bind_scsi(struct udevice *ahci_dev, struct udevice **devp)
943 ret = device_bind_driver(ahci_dev, "ahci_scsi", "ahci_scsi", &dev);
951 int ahci_probe_scsi(struct udevice *ahci_dev, ulong base)
953 struct ahci_uc_priv *uc_priv;
954 struct scsi_plat *uc_plat;
958 device_find_first_child(ahci_dev, &dev);
961 uc_plat = dev_get_uclass_plat(dev);
962 uc_plat->base = base;
963 uc_plat->max_lun = 1;
966 uc_priv = dev_get_uclass_priv(ahci_dev);
967 ret = ahci_init_one(uc_priv, dev);
970 ret = ahci_start_ports(uc_priv);
975 * scsi_scan_dev() scans devices up-to the number of max_id.
976 * Update max_id if the number of detected ports exceeds max_id.
977 * This allows SCSI to scan all detected ports.
979 uc_plat->max_id = max_t(unsigned long, uc_priv->n_ports,
981 /* If port count is less than max_id, update max_id */
982 if (uc_priv->n_ports < uc_plat->max_id)
983 uc_plat->max_id = uc_priv->n_ports;
988 int ahci_probe_scsi_pci(struct udevice *ahci_dev)
991 u16 vendor, device, cmd;
993 /* Enable bus mastering */
994 dm_pci_read_config16(ahci_dev, PCI_COMMAND, &cmd);
995 cmd |= PCI_COMMAND_MASTER;
996 dm_pci_write_config16(ahci_dev, PCI_COMMAND, cmd);
998 base = (ulong)dm_pci_map_bar(ahci_dev, PCI_BASE_ADDRESS_5, 0, 0,
999 PCI_REGION_TYPE, PCI_REGION_MEM);
1003 * Right now, we have only one quirk here, which is not enough to
1004 * introduce a new Kconfig option to select this. Once we have more
1005 * quirks in this AHCI code, we should add a Kconfig option for
1008 dm_pci_read_config16(ahci_dev, PCI_VENDOR_ID, &vendor);
1009 dm_pci_read_config16(ahci_dev, PCI_DEVICE_ID, &device);
1011 if (vendor == PCI_VENDOR_ID_CAVIUM &&
1012 device == PCI_DEVICE_ID_CAVIUM_SATA)
1013 base = (uintptr_t)dm_pci_map_bar(ahci_dev, PCI_BASE_ADDRESS_0,
1014 0, 0, PCI_REGION_TYPE,
1016 return ahci_probe_scsi(ahci_dev, base);
1019 struct scsi_ops scsi_ops = {
1020 .exec = ahci_scsi_exec,
1021 .bus_reset = ahci_scsi_bus_reset,
1024 U_BOOT_DRIVER(ahci_scsi) = {
1025 .name = "ahci_scsi",