1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) Freescale Semiconductor, Inc. 2006.
4 * Author: Jason Jin<Jason.jin@freescale.com>
5 * Zhang Wei<wei.zhang@freescale.com>
7 * with the reference on libata and ahci drvier in kernel
9 * This driver provides a SCSI interface to SATA.
16 #include <asm/processor.h>
17 #include <linux/errno.h>
24 #include <linux/ctype.h>
26 #include <dm/device-internal.h>
29 static int ata_io_flush(struct ahci_uc_priv *uc_priv, u8 port);
31 #ifndef CONFIG_DM_SCSI
32 struct ahci_uc_priv *probe_ent = NULL;
35 #define writel_with_flush(a,b) do { writel(a,b); readl(b); } while (0)
38 * Some controllers limit number of blocks they can read/write at once.
39 * Contemporary SSD devices work much faster if the read/write size is aligned
40 * to a power of 2. Let's set default to 128 and allowing to be overwritten if
43 #ifndef MAX_SATA_BLOCKS_READ_WRITE
44 #define MAX_SATA_BLOCKS_READ_WRITE 0x80
47 /* Maximum timeouts for each event */
48 #define WAIT_MS_SPINUP 20000
49 #define WAIT_MS_DATAIO 10000
50 #define WAIT_MS_FLUSH 5000
51 #define WAIT_MS_LINKUP 200
53 #define AHCI_CAP_S64A BIT(31)
55 __weak void __iomem *ahci_port_base(void __iomem *base, u32 port)
57 return base + 0x100 + (port * 0x80);
60 #define msleep(a) udelay(a * 1000)
62 static void ahci_dcache_flush_range(unsigned long begin, unsigned long len)
64 const unsigned long start = begin;
65 const unsigned long end = start + len;
67 debug("%s: flush dcache: [%#lx, %#lx)\n", __func__, start, end);
68 flush_dcache_range(start, end);
72 * SATA controller DMAs to physical RAM. Ensure data from the
73 * controller is invalidated from dcache; next access comes from
76 static void ahci_dcache_invalidate_range(unsigned long begin, unsigned long len)
78 const unsigned long start = begin;
79 const unsigned long end = start + len;
81 debug("%s: invalidate dcache: [%#lx, %#lx)\n", __func__, start, end);
82 invalidate_dcache_range(start, end);
86 * Ensure data for SATA controller is flushed out of dcache and
87 * written to physical memory.
89 static void ahci_dcache_flush_sata_cmd(struct ahci_ioports *pp)
91 ahci_dcache_flush_range((unsigned long)pp->cmd_slot,
92 AHCI_PORT_PRIV_DMA_SZ);
95 static int waiting_for_cmd_completed(void __iomem *offset,
102 for (i = 0; ((status = readl(offset)) & sign) && i < timeout_msec; i++)
105 return (i < timeout_msec) ? 0 : -1;
108 int __weak ahci_link_up(struct ahci_uc_priv *uc_priv, u8 port)
112 void __iomem *port_mmio = uc_priv->port[port].port_mmio;
115 * Bring up SATA link.
116 * SATA link bringup time is usually less than 1 ms; only very
117 * rarely has it taken between 1-2 ms. Never seen it above 2 ms.
119 while (j < WAIT_MS_LINKUP) {
120 tmp = readl(port_mmio + PORT_SCR_STAT);
121 tmp &= PORT_SCR_STAT_DET_MASK;
122 if (tmp == PORT_SCR_STAT_DET_PHYRDY)
130 #ifdef CONFIG_SUNXI_AHCI
131 /* The sunxi AHCI controller requires this undocumented setup */
132 static void sunxi_dma_init(void __iomem *port_mmio)
134 clrsetbits_le32(port_mmio + PORT_P0DMACR, 0x0000ff00, 0x00004400);
138 int ahci_reset(void __iomem *base)
141 u32 __iomem *host_ctl_reg = base + HOST_CTL;
142 u32 tmp = readl(host_ctl_reg); /* global controller reset */
144 if ((tmp & HOST_RESET) == 0)
145 writel_with_flush(tmp | HOST_RESET, host_ctl_reg);
148 * reset must complete within 1 second, or
149 * the hardware should be considered fried.
153 tmp = readl(host_ctl_reg);
155 } while ((i > 0) && (tmp & HOST_RESET));
158 printf("controller reset failed (0x%x)\n", tmp);
165 static int ahci_host_init(struct ahci_uc_priv *uc_priv)
167 #if !defined(CONFIG_SCSI_AHCI_PLAT) && !defined(CONFIG_DM_SCSI)
168 # ifdef CONFIG_DM_PCI
169 struct udevice *dev = uc_priv->dev;
170 struct pci_child_platdata *pplat = dev_get_parent_platdata(dev);
172 pci_dev_t pdev = uc_priv->dev;
173 unsigned short vendor;
177 void __iomem *mmio = uc_priv->mmio_base;
178 u32 tmp, cap_save, cmd;
180 void __iomem *port_mmio;
183 debug("ahci_host_init: start\n");
185 cap_save = readl(mmio + HOST_CAP);
186 cap_save &= ((1 << 28) | (1 << 17));
187 cap_save |= (1 << 27); /* Staggered Spin-up. Not needed. */
189 ret = ahci_reset(uc_priv->mmio_base);
193 writel_with_flush(HOST_AHCI_EN, mmio + HOST_CTL);
194 writel(cap_save, mmio + HOST_CAP);
195 writel_with_flush(0xf, mmio + HOST_PORTS_IMPL);
197 #if !defined(CONFIG_SCSI_AHCI_PLAT) && !defined(CONFIG_DM_SCSI)
198 # ifdef CONFIG_DM_PCI
199 if (pplat->vendor == PCI_VENDOR_ID_INTEL) {
202 dm_pci_read_config16(dev, 0x92, &tmp16);
203 dm_pci_write_config16(dev, 0x92, tmp16 | 0xf);
206 pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor);
208 if (vendor == PCI_VENDOR_ID_INTEL) {
210 pci_read_config_word(pdev, 0x92, &tmp16);
212 pci_write_config_word(pdev, 0x92, tmp16);
216 uc_priv->cap = readl(mmio + HOST_CAP);
217 uc_priv->port_map = readl(mmio + HOST_PORTS_IMPL);
218 port_map = uc_priv->port_map;
219 uc_priv->n_ports = (uc_priv->cap & 0x1f) + 1;
221 debug("cap 0x%x port_map 0x%x n_ports %d\n",
222 uc_priv->cap, uc_priv->port_map, uc_priv->n_ports);
224 #if !defined(CONFIG_DM_SCSI)
225 if (uc_priv->n_ports > CONFIG_SYS_SCSI_MAX_SCSI_ID)
226 uc_priv->n_ports = CONFIG_SYS_SCSI_MAX_SCSI_ID;
229 for (i = 0; i < uc_priv->n_ports; i++) {
230 if (!(port_map & (1 << i)))
232 uc_priv->port[i].port_mmio = ahci_port_base(mmio, i);
233 port_mmio = (u8 *)uc_priv->port[i].port_mmio;
235 /* make sure port is not active */
236 tmp = readl(port_mmio + PORT_CMD);
237 if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
238 PORT_CMD_FIS_RX | PORT_CMD_START)) {
239 debug("Port %d is active. Deactivating.\n", i);
240 tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
241 PORT_CMD_FIS_RX | PORT_CMD_START);
242 writel_with_flush(tmp, port_mmio + PORT_CMD);
244 /* spec says 500 msecs for each bit, so
245 * this is slightly incorrect.
250 #ifdef CONFIG_SUNXI_AHCI
251 sunxi_dma_init(port_mmio);
254 /* Add the spinup command to whatever mode bits may
255 * already be on in the command register.
257 cmd = readl(port_mmio + PORT_CMD);
258 cmd |= PORT_CMD_SPIN_UP;
259 writel_with_flush(cmd, port_mmio + PORT_CMD);
261 /* Bring up SATA link. */
262 ret = ahci_link_up(uc_priv, i);
264 printf("SATA link %d timeout.\n", i);
267 debug("SATA link ok.\n");
270 /* Clear error status */
271 tmp = readl(port_mmio + PORT_SCR_ERR);
273 writel(tmp, port_mmio + PORT_SCR_ERR);
275 debug("Spinning up device on SATA port %d... ", i);
278 while (j < WAIT_MS_SPINUP) {
279 tmp = readl(port_mmio + PORT_TFDATA);
280 if (!(tmp & (ATA_BUSY | ATA_DRQ)))
283 tmp = readl(port_mmio + PORT_SCR_STAT);
284 tmp &= PORT_SCR_STAT_DET_MASK;
285 if (tmp == PORT_SCR_STAT_DET_PHYRDY)
290 tmp = readl(port_mmio + PORT_SCR_STAT) & PORT_SCR_STAT_DET_MASK;
291 if (tmp == PORT_SCR_STAT_DET_COMINIT) {
292 debug("SATA link %d down (COMINIT received), retrying...\n", i);
297 printf("Target spinup took %d ms.\n", j);
298 if (j == WAIT_MS_SPINUP)
303 tmp = readl(port_mmio + PORT_SCR_ERR);
304 debug("PORT_SCR_ERR 0x%x\n", tmp);
305 writel(tmp, port_mmio + PORT_SCR_ERR);
307 /* ack any pending irq events for this port */
308 tmp = readl(port_mmio + PORT_IRQ_STAT);
309 debug("PORT_IRQ_STAT 0x%x\n", tmp);
311 writel(tmp, port_mmio + PORT_IRQ_STAT);
313 writel(1 << i, mmio + HOST_IRQ_STAT);
315 /* register linkup ports */
316 tmp = readl(port_mmio + PORT_SCR_STAT);
317 debug("SATA port %d status: 0x%x\n", i, tmp);
318 if ((tmp & PORT_SCR_STAT_DET_MASK) == PORT_SCR_STAT_DET_PHYRDY)
319 uc_priv->link_port_map |= (0x01 << i);
322 tmp = readl(mmio + HOST_CTL);
323 debug("HOST_CTL 0x%x\n", tmp);
324 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
325 tmp = readl(mmio + HOST_CTL);
326 debug("HOST_CTL 0x%x\n", tmp);
327 #if !defined(CONFIG_DM_SCSI)
328 #ifndef CONFIG_SCSI_AHCI_PLAT
329 # ifdef CONFIG_DM_PCI
330 dm_pci_read_config16(dev, PCI_COMMAND, &tmp16);
331 tmp |= PCI_COMMAND_MASTER;
332 dm_pci_write_config16(dev, PCI_COMMAND, tmp16);
334 pci_read_config_word(pdev, PCI_COMMAND, &tmp16);
335 tmp |= PCI_COMMAND_MASTER;
336 pci_write_config_word(pdev, PCI_COMMAND, tmp16);
344 static void ahci_print_info(struct ahci_uc_priv *uc_priv)
346 #if !defined(CONFIG_SCSI_AHCI_PLAT) && !defined(CONFIG_DM_SCSI)
347 # if defined(CONFIG_DM_PCI)
348 struct udevice *dev = uc_priv->dev;
350 pci_dev_t pdev = uc_priv->dev;
354 void __iomem *mmio = uc_priv->mmio_base;
355 u32 vers, cap, cap2, impl, speed;
359 vers = readl(mmio + HOST_VERSION);
361 cap2 = readl(mmio + HOST_CAP2);
362 impl = uc_priv->port_map;
364 speed = (cap >> 20) & 0xf;
374 #if defined(CONFIG_SCSI_AHCI_PLAT) || defined(CONFIG_DM_SCSI)
377 # ifdef CONFIG_DM_PCI
378 dm_pci_read_config16(dev, 0x0a, &cc);
380 pci_read_config_word(pdev, 0x0a, &cc);
384 else if (cc == 0x0106)
386 else if (cc == 0x0104)
391 printf("AHCI %02x%02x.%02x%02x "
392 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
397 ((cap >> 8) & 0x1f) + 1, (cap & 0x1f) + 1, speed_s, impl, scc_s);
403 cap & (1 << 31) ? "64bit " : "",
404 cap & (1 << 30) ? "ncq " : "",
405 cap & (1 << 28) ? "ilck " : "",
406 cap & (1 << 27) ? "stag " : "",
407 cap & (1 << 26) ? "pm " : "",
408 cap & (1 << 25) ? "led " : "",
409 cap & (1 << 24) ? "clo " : "",
410 cap & (1 << 19) ? "nz " : "",
411 cap & (1 << 18) ? "only " : "",
412 cap & (1 << 17) ? "pmp " : "",
413 cap & (1 << 16) ? "fbss " : "",
414 cap & (1 << 15) ? "pio " : "",
415 cap & (1 << 14) ? "slum " : "",
416 cap & (1 << 13) ? "part " : "",
417 cap & (1 << 7) ? "ccc " : "",
418 cap & (1 << 6) ? "ems " : "",
419 cap & (1 << 5) ? "sxs " : "",
420 cap2 & (1 << 2) ? "apst " : "",
421 cap2 & (1 << 1) ? "nvmp " : "",
422 cap2 & (1 << 0) ? "boh " : "");
425 #if defined(CONFIG_DM_SCSI) || !defined(CONFIG_SCSI_AHCI_PLAT)
426 # if defined(CONFIG_DM_PCI) || defined(CONFIG_DM_SCSI)
427 static int ahci_init_one(struct ahci_uc_priv *uc_priv, struct udevice *dev)
429 static int ahci_init_one(struct ahci_uc_priv *uc_priv, pci_dev_t dev)
432 #if !defined(CONFIG_DM_SCSI)
439 uc_priv->host_flags = ATA_FLAG_SATA
444 uc_priv->pio_mask = 0x1f;
445 uc_priv->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
447 #if !defined(CONFIG_DM_SCSI)
449 uc_priv->mmio_base = dm_pci_map_bar(dev, PCI_BASE_ADDRESS_5,
453 * JMicron-specific fixup:
454 * make sure we're in AHCI mode
456 dm_pci_read_config16(dev, PCI_VENDOR_ID, &vendor);
457 if (vendor == 0x197b)
458 dm_pci_write_config8(dev, 0x41, 0xa1);
460 uc_priv->mmio_base = pci_map_bar(dev, PCI_BASE_ADDRESS_5,
464 * JMicron-specific fixup:
465 * make sure we're in AHCI mode
467 pci_read_config_word(dev, PCI_VENDOR_ID, &vendor);
468 if (vendor == 0x197b)
469 pci_write_config_byte(dev, 0x41, 0xa1);
472 struct scsi_platdata *plat = dev_get_uclass_platdata(dev);
473 uc_priv->mmio_base = (void *)plat->base;
476 debug("ahci mmio_base=0x%p\n", uc_priv->mmio_base);
477 /* initialize adapter */
478 rc = ahci_host_init(uc_priv);
482 ahci_print_info(uc_priv);
491 #define MAX_DATA_BYTE_COUNT (4*1024*1024)
493 static int ahci_fill_sg(struct ahci_uc_priv *uc_priv, u8 port,
494 unsigned char *buf, int buf_len)
496 struct ahci_ioports *pp = &(uc_priv->port[port]);
497 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
501 sg_count = ((buf_len - 1) / MAX_DATA_BYTE_COUNT) + 1;
502 if (sg_count > AHCI_MAX_SG) {
503 printf("Error:Too much sg!\n");
507 for (i = 0; i < sg_count; i++) {
508 /* We assume virt=phys */
509 phys_addr_t pa = (unsigned long)buf + i * MAX_DATA_BYTE_COUNT;
511 ahci_sg->addr = cpu_to_le32(lower_32_bits(pa));
512 ahci_sg->addr_hi = cpu_to_le32(upper_32_bits(pa));
513 if (ahci_sg->addr_hi && !(uc_priv->cap & AHCI_CAP_S64A)) {
514 printf("Error: DMA address too high\n");
517 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
518 (buf_len < MAX_DATA_BYTE_COUNT
520 : (MAX_DATA_BYTE_COUNT - 1)));
522 buf_len -= MAX_DATA_BYTE_COUNT;
529 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 opts)
531 pp->cmd_slot->opts = cpu_to_le32(opts);
532 pp->cmd_slot->status = 0;
533 pp->cmd_slot->tbl_addr = cpu_to_le32((u32)pp->cmd_tbl & 0xffffffff);
534 #ifdef CONFIG_PHYS_64BIT
535 pp->cmd_slot->tbl_addr_hi =
536 cpu_to_le32((u32)(((pp->cmd_tbl) >> 16) >> 16));
540 static int wait_spinup(void __iomem *port_mmio)
545 start = get_timer(0);
547 tf_data = readl(port_mmio + PORT_TFDATA);
548 if (!(tf_data & ATA_BUSY))
550 } while (get_timer(start) < WAIT_MS_SPINUP);
555 static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
557 struct ahci_ioports *pp = &(uc_priv->port[port]);
558 void __iomem *port_mmio = pp->port_mmio;
563 debug("Enter start port: %d\n", port);
564 port_status = readl(port_mmio + PORT_SCR_STAT);
565 debug("Port %d status: %x\n", port, port_status);
566 if ((port_status & 0xf) != 0x03) {
567 printf("No Link on this port!\n");
571 mem = memalign(2048, AHCI_PORT_PRIV_DMA_SZ);
574 printf("%s: No mem for table!\n", __func__);
577 memset(mem, 0, AHCI_PORT_PRIV_DMA_SZ);
580 * First item in chunk of DMA memory: 32-slot command table,
581 * 32 bytes each in size
584 (struct ahci_cmd_hdr *)(uintptr_t)virt_to_phys((void *)mem);
585 debug("cmd_slot = %p\n", pp->cmd_slot);
586 mem += (AHCI_CMD_SLOT_SZ + 224);
589 * Second item: Received-FIS area
591 pp->rx_fis = virt_to_phys((void *)mem);
592 mem += AHCI_RX_FIS_SZ;
595 * Third item: data area for storing a single command
596 * and its scatter-gather table
598 pp->cmd_tbl = virt_to_phys((void *)mem);
599 debug("cmd_tbl_dma = %lx\n", pp->cmd_tbl);
601 mem += AHCI_CMD_TBL_HDR;
603 (struct ahci_sg *)(uintptr_t)virt_to_phys((void *)mem);
605 dma_addr = (ulong)pp->cmd_slot;
606 writel_with_flush(dma_addr, port_mmio + PORT_LST_ADDR);
607 writel_with_flush(dma_addr >> 32, port_mmio + PORT_LST_ADDR_HI);
608 dma_addr = (ulong)pp->rx_fis;
609 writel_with_flush(dma_addr, port_mmio + PORT_FIS_ADDR);
610 writel_with_flush(dma_addr >> 32, port_mmio + PORT_FIS_ADDR_HI);
612 #ifdef CONFIG_SUNXI_AHCI
613 sunxi_dma_init(port_mmio);
616 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
617 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
618 PORT_CMD_START, port_mmio + PORT_CMD);
620 debug("Exit start port %d\n", port);
623 * Make sure interface is not busy based on error and status
624 * information from task file data register before proceeding
626 return wait_spinup(port_mmio);
630 static int ahci_device_data_io(struct ahci_uc_priv *uc_priv, u8 port, u8 *fis,
631 int fis_len, u8 *buf, int buf_len, u8 is_write)
634 struct ahci_ioports *pp = &(uc_priv->port[port]);
635 void __iomem *port_mmio = pp->port_mmio;
640 debug("Enter %s: for port %d\n", __func__, port);
642 if (port > uc_priv->n_ports) {
643 printf("Invalid port number %d\n", port);
647 port_status = readl(port_mmio + PORT_SCR_STAT);
648 if ((port_status & 0xf) != 0x03) {
649 debug("No Link on port %d!\n", port);
653 memcpy((unsigned char *)pp->cmd_tbl, fis, fis_len);
655 sg_count = ahci_fill_sg(uc_priv, port, buf, buf_len);
656 opts = (fis_len >> 2) | (sg_count << 16) | (is_write << 6);
657 ahci_fill_cmd_slot(pp, opts);
659 ahci_dcache_flush_sata_cmd(pp);
660 ahci_dcache_flush_range((unsigned long)buf, (unsigned long)buf_len);
662 writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
664 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
665 WAIT_MS_DATAIO, 0x1)) {
666 printf("timeout exit!\n");
670 ahci_dcache_invalidate_range((unsigned long)buf,
671 (unsigned long)buf_len);
672 debug("%s: %d byte transferred.\n", __func__, pp->cmd_slot->status);
678 static char *ata_id_strcpy(u16 *target, u16 *src, int len)
681 for (i = 0; i < len / 2; i++)
682 target[i] = swab16(src[i]);
683 return (char *)target;
687 * SCSI INQUIRY command operation.
689 static int ata_scsiop_inquiry(struct ahci_uc_priv *uc_priv,
690 struct scsi_cmd *pccb)
692 static const u8 hdr[] = {
695 0x5, /* claim SPC-3 version compatibility */
701 ALLOC_CACHE_ALIGN_BUFFER(u16, tmpid, ATA_ID_WORDS);
704 /* Clean ccb data buffer */
705 memset(pccb->pdata, 0, pccb->datalen);
707 memcpy(pccb->pdata, hdr, sizeof(hdr));
709 if (pccb->datalen <= 35)
712 memset(fis, 0, sizeof(fis));
713 /* Construct the FIS */
714 fis[0] = 0x27; /* Host to device FIS. */
715 fis[1] = 1 << 7; /* Command FIS. */
716 fis[2] = ATA_CMD_ID_ATA; /* Command byte. */
718 /* Read id from sata */
721 if (ahci_device_data_io(uc_priv, port, (u8 *)&fis, sizeof(fis),
722 (u8 *)tmpid, ATA_ID_WORDS * 2, 0)) {
723 debug("scsi_ahci: SCSI inquiry command failure.\n");
727 if (!uc_priv->ataid[port]) {
728 uc_priv->ataid[port] = malloc(ATA_ID_WORDS * 2);
729 if (!uc_priv->ataid[port]) {
730 printf("%s: No memory for ataid[port]\n", __func__);
735 idbuf = uc_priv->ataid[port];
737 memcpy(idbuf, tmpid, ATA_ID_WORDS * 2);
738 ata_swap_buf_le16(idbuf, ATA_ID_WORDS);
740 memcpy(&pccb->pdata[8], "ATA ", 8);
741 ata_id_strcpy((u16 *)&pccb->pdata[16], &idbuf[ATA_ID_PROD], 16);
742 ata_id_strcpy((u16 *)&pccb->pdata[32], &idbuf[ATA_ID_FW_REV], 4);
752 * SCSI READ10/WRITE10 command operation.
754 static int ata_scsiop_read_write(struct ahci_uc_priv *uc_priv,
755 struct scsi_cmd *pccb, u8 is_write)
760 u8 *user_buffer = pccb->pdata;
761 u32 user_buffer_size = pccb->datalen;
763 /* Retrieve the base LBA number from the ccb structure. */
764 if (pccb->cmd[0] == SCSI_READ16) {
765 memcpy(&lba, pccb->cmd + 2, 8);
766 lba = be64_to_cpu(lba);
769 memcpy(&temp, pccb->cmd + 2, 4);
770 lba = be32_to_cpu(temp);
774 * Retrieve the base LBA number and the block count from
777 * For 10-byte and 16-byte SCSI R/W commands, transfer
778 * length 0 means transfer 0 block of data.
779 * However, for ATA R/W commands, sector count 0 means
780 * 256 or 65536 sectors, not 0 sectors as in SCSI.
782 * WARNING: one or two older ATA drives treat 0 as 0...
784 if (pccb->cmd[0] == SCSI_READ16)
785 blocks = (((u16)pccb->cmd[13]) << 8) | ((u16) pccb->cmd[14]);
787 blocks = (((u16)pccb->cmd[7]) << 8) | ((u16) pccb->cmd[8]);
789 debug("scsi_ahci: %s %u blocks starting from lba 0x" LBAFU "\n",
790 is_write ? "write" : "read", blocks, lba);
793 memset(fis, 0, sizeof(fis));
794 fis[0] = 0x27; /* Host to device FIS. */
795 fis[1] = 1 << 7; /* Command FIS. */
796 /* Command byte (read/write). */
797 fis[2] = is_write ? ATA_CMD_WRITE_EXT : ATA_CMD_READ_EXT;
800 u16 now_blocks; /* number of blocks per iteration */
801 u32 transfer_size; /* number of bytes per iteration */
803 now_blocks = min((u16)MAX_SATA_BLOCKS_READ_WRITE, blocks);
805 transfer_size = ATA_SECT_SIZE * now_blocks;
806 if (transfer_size > user_buffer_size) {
807 printf("scsi_ahci: Error: buffer too small.\n");
812 * LBA48 SATA command but only use 32bit address range within
813 * that (unless we've enabled 64bit LBA support). The next
814 * smaller command range (28bit) is too small.
816 fis[4] = (lba >> 0) & 0xff;
817 fis[5] = (lba >> 8) & 0xff;
818 fis[6] = (lba >> 16) & 0xff;
819 fis[7] = 1 << 6; /* device reg: set LBA mode */
820 fis[8] = ((lba >> 24) & 0xff);
821 #ifdef CONFIG_SYS_64BIT_LBA
822 if (pccb->cmd[0] == SCSI_READ16) {
823 fis[9] = ((lba >> 32) & 0xff);
824 fis[10] = ((lba >> 40) & 0xff);
828 fis[3] = 0xe0; /* features */
830 /* Block (sector) count */
831 fis[12] = (now_blocks >> 0) & 0xff;
832 fis[13] = (now_blocks >> 8) & 0xff;
834 /* Read/Write from ahci */
835 if (ahci_device_data_io(uc_priv, pccb->target, (u8 *)&fis,
836 sizeof(fis), user_buffer, transfer_size,
838 debug("scsi_ahci: SCSI %s10 command failure.\n",
839 is_write ? "WRITE" : "READ");
843 /* If this transaction is a write, do a following flush.
844 * Writes in u-boot are so rare, and the logic to know when is
845 * the last write and do a flush only there is sufficiently
846 * difficult. Just do a flush after every write. This incurs,
847 * usually, one extra flush when the rare writes do happen.
850 if (-EIO == ata_io_flush(uc_priv, pccb->target))
853 user_buffer += transfer_size;
854 user_buffer_size -= transfer_size;
855 blocks -= now_blocks;
864 * SCSI READ CAPACITY10 command operation.
866 static int ata_scsiop_read_capacity10(struct ahci_uc_priv *uc_priv,
867 struct scsi_cmd *pccb)
873 if (!uc_priv->ataid[pccb->target]) {
874 printf("scsi_ahci: SCSI READ CAPACITY10 command failure. "
876 "\tPlease run SCSI command INQUIRY first!\n");
880 cap64 = ata_id_n_sectors(uc_priv->ataid[pccb->target]);
881 if (cap64 > 0x100000000ULL)
884 cap = cpu_to_be32(cap64);
885 memcpy(pccb->pdata, &cap, sizeof(cap));
887 block_size = cpu_to_be32((u32)512);
888 memcpy(&pccb->pdata[4], &block_size, 4);
895 * SCSI READ CAPACITY16 command operation.
897 static int ata_scsiop_read_capacity16(struct ahci_uc_priv *uc_priv,
898 struct scsi_cmd *pccb)
903 if (!uc_priv->ataid[pccb->target]) {
904 printf("scsi_ahci: SCSI READ CAPACITY16 command failure. "
906 "\tPlease run SCSI command INQUIRY first!\n");
910 cap = ata_id_n_sectors(uc_priv->ataid[pccb->target]);
911 cap = cpu_to_be64(cap);
912 memcpy(pccb->pdata, &cap, sizeof(cap));
914 block_size = cpu_to_be64((u64)512);
915 memcpy(&pccb->pdata[8], &block_size, 8);
922 * SCSI TEST UNIT READY command operation.
924 static int ata_scsiop_test_unit_ready(struct ahci_uc_priv *uc_priv,
925 struct scsi_cmd *pccb)
927 return (uc_priv->ataid[pccb->target]) ? 0 : -EPERM;
931 static int ahci_scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
933 struct ahci_uc_priv *uc_priv;
934 #ifdef CONFIG_DM_SCSI
935 uc_priv = dev_get_uclass_priv(dev->parent);
941 switch (pccb->cmd[0]) {
944 ret = ata_scsiop_read_write(uc_priv, pccb, 0);
947 ret = ata_scsiop_read_write(uc_priv, pccb, 1);
949 case SCSI_RD_CAPAC10:
950 ret = ata_scsiop_read_capacity10(uc_priv, pccb);
952 case SCSI_RD_CAPAC16:
953 ret = ata_scsiop_read_capacity16(uc_priv, pccb);
956 ret = ata_scsiop_test_unit_ready(uc_priv, pccb);
959 ret = ata_scsiop_inquiry(uc_priv, pccb);
962 printf("Unsupport SCSI command 0x%02x\n", pccb->cmd[0]);
967 debug("SCSI command 0x%02x ret errno %d\n", pccb->cmd[0], ret);
974 static int ahci_start_ports(struct ahci_uc_priv *uc_priv)
979 linkmap = uc_priv->link_port_map;
981 for (i = 0; i < uc_priv->n_ports; i++) {
982 if (((linkmap >> i) & 0x01)) {
983 if (ahci_port_start(uc_priv, (u8) i)) {
984 printf("Can not start port %d\n", i);
993 #ifndef CONFIG_DM_SCSI
994 void scsi_low_level_init(int busdevfunc)
996 struct ahci_uc_priv *uc_priv;
998 #ifndef CONFIG_SCSI_AHCI_PLAT
999 probe_ent = calloc(1, sizeof(struct ahci_uc_priv));
1001 printf("%s: No memory for uc_priv\n", __func__);
1004 uc_priv = probe_ent;
1005 # if defined(CONFIG_DM_PCI)
1006 struct udevice *dev;
1009 ret = dm_pci_bus_find_bdf(busdevfunc, &dev);
1012 ahci_init_one(uc_priv, dev);
1014 ahci_init_one(uc_priv, busdevfunc);
1017 uc_priv = probe_ent;
1020 ahci_start_ports(uc_priv);
1024 #ifndef CONFIG_SCSI_AHCI_PLAT
1025 # if defined(CONFIG_DM_PCI) || defined(CONFIG_DM_SCSI)
1026 int ahci_init_one_dm(struct udevice *dev)
1028 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
1030 return ahci_init_one(uc_priv, dev);
1035 int ahci_start_ports_dm(struct udevice *dev)
1037 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
1039 return ahci_start_ports(uc_priv);
1042 #ifdef CONFIG_SCSI_AHCI_PLAT
1043 static int ahci_init_common(struct ahci_uc_priv *uc_priv, void __iomem *base)
1047 uc_priv->host_flags = ATA_FLAG_SATA
1048 | ATA_FLAG_NO_LEGACY
1051 | ATA_FLAG_NO_ATAPI;
1052 uc_priv->pio_mask = 0x1f;
1053 uc_priv->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
1055 uc_priv->mmio_base = base;
1057 /* initialize adapter */
1058 rc = ahci_host_init(uc_priv);
1062 ahci_print_info(uc_priv);
1064 rc = ahci_start_ports(uc_priv);
1070 #ifndef CONFIG_DM_SCSI
1071 int ahci_init(void __iomem *base)
1073 struct ahci_uc_priv *uc_priv;
1075 probe_ent = malloc(sizeof(struct ahci_uc_priv));
1077 printf("%s: No memory for uc_priv\n", __func__);
1081 uc_priv = probe_ent;
1082 memset(uc_priv, 0, sizeof(struct ahci_uc_priv));
1084 return ahci_init_common(uc_priv, base);
1088 int ahci_init_dm(struct udevice *dev, void __iomem *base)
1090 struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
1092 return ahci_init_common(uc_priv, base);
1095 void __weak scsi_init(void)
1099 #endif /* CONFIG_SCSI_AHCI_PLAT */
1102 * In the general case of generic rotating media it makes sense to have a
1103 * flush capability. It probably even makes sense in the case of SSDs because
1104 * one cannot always know for sure what kind of internal cache/flush mechanism
1105 * is embodied therein. At first it was planned to invoke this after the last
1106 * write to disk and before rebooting. In practice, knowing, a priori, which
1107 * is the last write is difficult. Because writing to the disk in u-boot is
1108 * very rare, this flush command will be invoked after every block write.
1110 static int ata_io_flush(struct ahci_uc_priv *uc_priv, u8 port)
1113 struct ahci_ioports *pp = &(uc_priv->port[port]);
1114 void __iomem *port_mmio = pp->port_mmio;
1115 u32 cmd_fis_len = 5; /* five dwords */
1117 /* Preset the FIS */
1119 fis[0] = 0x27; /* Host to device FIS. */
1120 fis[1] = 1 << 7; /* Command FIS. */
1121 fis[2] = ATA_CMD_FLUSH_EXT;
1123 memcpy((unsigned char *)pp->cmd_tbl, fis, 20);
1124 ahci_fill_cmd_slot(pp, cmd_fis_len);
1125 ahci_dcache_flush_sata_cmd(pp);
1126 writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
1128 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
1129 WAIT_MS_FLUSH, 0x1)) {
1130 debug("scsi_ahci: flush command timeout on port %d.\n", port);
1137 static int ahci_scsi_bus_reset(struct udevice *dev)
1139 /* Not implemented */
1144 #ifdef CONFIG_DM_SCSI
1145 int ahci_bind_scsi(struct udevice *ahci_dev, struct udevice **devp)
1147 struct udevice *dev;
1150 ret = device_bind_driver(ahci_dev, "ahci_scsi", "ahci_scsi", &dev);
1158 int ahci_probe_scsi(struct udevice *ahci_dev, ulong base)
1160 struct ahci_uc_priv *uc_priv;
1161 struct scsi_platdata *uc_plat;
1162 struct udevice *dev;
1165 device_find_first_child(ahci_dev, &dev);
1168 uc_plat = dev_get_uclass_platdata(dev);
1169 uc_plat->base = base;
1170 uc_plat->max_lun = 1;
1171 uc_plat->max_id = 2;
1173 uc_priv = dev_get_uclass_priv(ahci_dev);
1174 ret = ahci_init_one(uc_priv, dev);
1177 ret = ahci_start_ports(uc_priv);
1182 * scsi_scan_dev() scans devices up-to the number of max_id.
1183 * Update max_id if the number of detected ports exceeds max_id.
1184 * This allows SCSI to scan all detected ports.
1186 uc_plat->max_id = max_t(unsigned long, uc_priv->n_ports,
1192 #ifdef CONFIG_DM_PCI
1193 int ahci_probe_scsi_pci(struct udevice *ahci_dev)
1197 base = (ulong)dm_pci_map_bar(ahci_dev, PCI_BASE_ADDRESS_5,
1200 return ahci_probe_scsi(ahci_dev, base);
1204 struct scsi_ops scsi_ops = {
1205 .exec = ahci_scsi_exec,
1206 .bus_reset = ahci_scsi_bus_reset,
1209 U_BOOT_DRIVER(ahci_scsi) = {
1210 .name = "ahci_scsi",
1215 int scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
1217 return ahci_scsi_exec(dev, pccb);
1220 __weak int scsi_bus_reset(struct udevice *dev)
1222 return ahci_scsi_bus_reset(dev);