2 * Copyright (C) Freescale Semiconductor, Inc. 2006.
3 * Author: Jason Jin<Jason.jin@freescale.com>
4 * Zhang Wei<wei.zhang@freescale.com>
6 * SPDX-License-Identifier: GPL-2.0+
8 * with the reference on libata and ahci drvier in kernel
14 #include <asm/processor.h>
15 #include <asm/errno.h>
20 #include <linux/ctype.h>
23 static int ata_io_flush(u8 port);
25 struct ahci_probe_ent *probe_ent = NULL;
26 hd_driveid_t *ataid[AHCI_MAX_PORTS];
28 #define writel_with_flush(a,b) do { writel(a,b); readl(b); } while (0)
31 * Some controllers limit number of blocks they can read/write at once.
32 * Contemporary SSD devices work much faster if the read/write size is aligned
33 * to a power of 2. Let's set default to 128 and allowing to be overwritten if
36 #ifndef MAX_SATA_BLOCKS_READ_WRITE
37 #define MAX_SATA_BLOCKS_READ_WRITE 0x80
40 /* Maximum timeouts for each event */
41 #define WAIT_MS_SPINUP 10000
42 #define WAIT_MS_DATAIO 5000
43 #define WAIT_MS_FLUSH 5000
44 #define WAIT_MS_LINKUP 4
46 static inline u32 ahci_port_base(u32 base, u32 port)
48 return base + 0x100 + (port * 0x80);
52 static void ahci_setup_port(struct ahci_ioports *port, unsigned long base,
53 unsigned int port_idx)
55 base = ahci_port_base(base, port_idx);
57 port->cmd_addr = base;
58 port->scr_addr = base + PORT_SCR;
62 #define msleep(a) udelay(a * 1000)
64 static void ahci_dcache_flush_range(unsigned begin, unsigned len)
66 const unsigned long start = begin;
67 const unsigned long end = start + len;
69 debug("%s: flush dcache: [%#lx, %#lx)\n", __func__, start, end);
70 flush_dcache_range(start, end);
74 * SATA controller DMAs to physical RAM. Ensure data from the
75 * controller is invalidated from dcache; next access comes from
78 static void ahci_dcache_invalidate_range(unsigned begin, unsigned len)
80 const unsigned long start = begin;
81 const unsigned long end = start + len;
83 debug("%s: invalidate dcache: [%#lx, %#lx)\n", __func__, start, end);
84 invalidate_dcache_range(start, end);
88 * Ensure data for SATA controller is flushed out of dcache and
89 * written to physical memory.
91 static void ahci_dcache_flush_sata_cmd(struct ahci_ioports *pp)
93 ahci_dcache_flush_range((unsigned long)pp->cmd_slot,
94 AHCI_PORT_PRIV_DMA_SZ);
97 static int waiting_for_cmd_completed(volatile u8 *offset,
104 for (i = 0; ((status = readl(offset)) & sign) && i < timeout_msec; i++)
107 return (i < timeout_msec) ? 0 : -1;
110 int __weak ahci_link_up(struct ahci_probe_ent *probe_ent, u8 port)
114 u8 *port_mmio = (u8 *)probe_ent->port[port].port_mmio;
117 * Bring up SATA link.
118 * SATA link bringup time is usually less than 1 ms; only very
119 * rarely has it taken between 1-2 ms. Never seen it above 2 ms.
121 while (j < WAIT_MS_LINKUP) {
122 tmp = readl(port_mmio + PORT_SCR_STAT);
123 tmp &= PORT_SCR_STAT_DET_MASK;
124 if (tmp == PORT_SCR_STAT_DET_PHYRDY)
132 static int ahci_host_init(struct ahci_probe_ent *probe_ent)
134 #ifndef CONFIG_SCSI_AHCI_PLAT
135 pci_dev_t pdev = probe_ent->dev;
137 unsigned short vendor;
139 volatile u8 *mmio = (volatile u8 *)probe_ent->mmio_base;
140 u32 tmp, cap_save, cmd;
142 volatile u8 *port_mmio;
145 debug("ahci_host_init: start\n");
147 cap_save = readl(mmio + HOST_CAP);
148 cap_save &= ((1 << 28) | (1 << 17));
149 cap_save |= (1 << 27); /* Staggered Spin-up. Not needed. */
151 /* global controller reset */
152 tmp = readl(mmio + HOST_CTL);
153 if ((tmp & HOST_RESET) == 0)
154 writel_with_flush(tmp | HOST_RESET, mmio + HOST_CTL);
156 /* reset must complete within 1 second, or
157 * the hardware should be considered fried.
162 tmp = readl(mmio + HOST_CTL);
164 debug("controller reset failed (0x%x)\n", tmp);
167 } while (tmp & HOST_RESET);
169 writel_with_flush(HOST_AHCI_EN, mmio + HOST_CTL);
170 writel(cap_save, mmio + HOST_CAP);
171 writel_with_flush(0xf, mmio + HOST_PORTS_IMPL);
173 #ifndef CONFIG_SCSI_AHCI_PLAT
174 pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor);
176 if (vendor == PCI_VENDOR_ID_INTEL) {
178 pci_read_config_word(pdev, 0x92, &tmp16);
180 pci_write_config_word(pdev, 0x92, tmp16);
183 probe_ent->cap = readl(mmio + HOST_CAP);
184 probe_ent->port_map = readl(mmio + HOST_PORTS_IMPL);
185 port_map = probe_ent->port_map;
186 probe_ent->n_ports = (probe_ent->cap & 0x1f) + 1;
188 debug("cap 0x%x port_map 0x%x n_ports %d\n",
189 probe_ent->cap, probe_ent->port_map, probe_ent->n_ports);
191 if (probe_ent->n_ports > CONFIG_SYS_SCSI_MAX_SCSI_ID)
192 probe_ent->n_ports = CONFIG_SYS_SCSI_MAX_SCSI_ID;
194 for (i = 0; i < probe_ent->n_ports; i++) {
195 if (!(port_map & (1 << i)))
197 probe_ent->port[i].port_mmio = ahci_port_base((u32) mmio, i);
198 port_mmio = (u8 *) probe_ent->port[i].port_mmio;
199 ahci_setup_port(&probe_ent->port[i], (unsigned long)mmio, i);
201 /* make sure port is not active */
202 tmp = readl(port_mmio + PORT_CMD);
203 if (tmp & (PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
204 PORT_CMD_FIS_RX | PORT_CMD_START)) {
205 debug("Port %d is active. Deactivating.\n", i);
206 tmp &= ~(PORT_CMD_LIST_ON | PORT_CMD_FIS_ON |
207 PORT_CMD_FIS_RX | PORT_CMD_START);
208 writel_with_flush(tmp, port_mmio + PORT_CMD);
210 /* spec says 500 msecs for each bit, so
211 * this is slightly incorrect.
216 /* Add the spinup command to whatever mode bits may
217 * already be on in the command register.
219 cmd = readl(port_mmio + PORT_CMD);
220 cmd |= PORT_CMD_FIS_RX;
221 cmd |= PORT_CMD_SPIN_UP;
222 writel_with_flush(cmd, port_mmio + PORT_CMD);
224 /* Bring up SATA link. */
225 ret = ahci_link_up(probe_ent, i);
227 printf("SATA link %d timeout.\n", i);
230 debug("SATA link ok.\n");
233 /* Clear error status */
234 tmp = readl(port_mmio + PORT_SCR_ERR);
236 writel(tmp, port_mmio + PORT_SCR_ERR);
238 debug("Spinning up device on SATA port %d... ", i);
241 while (j < WAIT_MS_SPINUP) {
242 tmp = readl(port_mmio + PORT_TFDATA);
243 if (!(tmp & (ATA_STAT_BUSY | ATA_STAT_DRQ)))
246 tmp = readl(port_mmio + PORT_SCR_STAT);
247 tmp &= PORT_SCR_STAT_DET_MASK;
248 if (tmp == PORT_SCR_STAT_DET_PHYRDY)
253 tmp = readl(port_mmio + PORT_SCR_STAT) & PORT_SCR_STAT_DET_MASK;
254 if (tmp == PORT_SCR_STAT_DET_COMINIT) {
255 debug("SATA link %d down (COMINIT received), retrying...\n", i);
260 printf("Target spinup took %d ms.\n", j);
261 if (j == WAIT_MS_SPINUP)
266 tmp = readl(port_mmio + PORT_SCR_ERR);
267 debug("PORT_SCR_ERR 0x%x\n", tmp);
268 writel(tmp, port_mmio + PORT_SCR_ERR);
270 /* ack any pending irq events for this port */
271 tmp = readl(port_mmio + PORT_IRQ_STAT);
272 debug("PORT_IRQ_STAT 0x%x\n", tmp);
274 writel(tmp, port_mmio + PORT_IRQ_STAT);
276 writel(1 << i, mmio + HOST_IRQ_STAT);
278 /* set irq mask (enables interrupts) */
279 writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
281 /* register linkup ports */
282 tmp = readl(port_mmio + PORT_SCR_STAT);
283 debug("SATA port %d status: 0x%x\n", i, tmp);
284 if ((tmp & PORT_SCR_STAT_DET_MASK) == PORT_SCR_STAT_DET_PHYRDY)
285 probe_ent->link_port_map |= (0x01 << i);
288 tmp = readl(mmio + HOST_CTL);
289 debug("HOST_CTL 0x%x\n", tmp);
290 writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
291 tmp = readl(mmio + HOST_CTL);
292 debug("HOST_CTL 0x%x\n", tmp);
293 #ifndef CONFIG_SCSI_AHCI_PLAT
294 pci_read_config_word(pdev, PCI_COMMAND, &tmp16);
295 tmp |= PCI_COMMAND_MASTER;
296 pci_write_config_word(pdev, PCI_COMMAND, tmp16);
302 static void ahci_print_info(struct ahci_probe_ent *probe_ent)
304 #ifndef CONFIG_SCSI_AHCI_PLAT
305 pci_dev_t pdev = probe_ent->dev;
308 volatile u8 *mmio = (volatile u8 *)probe_ent->mmio_base;
309 u32 vers, cap, cap2, impl, speed;
313 vers = readl(mmio + HOST_VERSION);
314 cap = probe_ent->cap;
315 cap2 = readl(mmio + HOST_CAP2);
316 impl = probe_ent->port_map;
318 speed = (cap >> 20) & 0xf;
328 #ifdef CONFIG_SCSI_AHCI_PLAT
331 pci_read_config_word(pdev, 0x0a, &cc);
334 else if (cc == 0x0106)
336 else if (cc == 0x0104)
341 printf("AHCI %02x%02x.%02x%02x "
342 "%u slots %u ports %s Gbps 0x%x impl %s mode\n",
347 ((cap >> 8) & 0x1f) + 1, (cap & 0x1f) + 1, speed_s, impl, scc_s);
353 cap & (1 << 31) ? "64bit " : "",
354 cap & (1 << 30) ? "ncq " : "",
355 cap & (1 << 28) ? "ilck " : "",
356 cap & (1 << 27) ? "stag " : "",
357 cap & (1 << 26) ? "pm " : "",
358 cap & (1 << 25) ? "led " : "",
359 cap & (1 << 24) ? "clo " : "",
360 cap & (1 << 19) ? "nz " : "",
361 cap & (1 << 18) ? "only " : "",
362 cap & (1 << 17) ? "pmp " : "",
363 cap & (1 << 16) ? "fbss " : "",
364 cap & (1 << 15) ? "pio " : "",
365 cap & (1 << 14) ? "slum " : "",
366 cap & (1 << 13) ? "part " : "",
367 cap & (1 << 7) ? "ccc " : "",
368 cap & (1 << 6) ? "ems " : "",
369 cap & (1 << 5) ? "sxs " : "",
370 cap2 & (1 << 2) ? "apst " : "",
371 cap2 & (1 << 1) ? "nvmp " : "",
372 cap2 & (1 << 0) ? "boh " : "");
375 #ifndef CONFIG_SCSI_AHCI_PLAT
376 static int ahci_init_one(pci_dev_t pdev)
381 memset((void *)ataid, 0, sizeof(hd_driveid_t *) * AHCI_MAX_PORTS);
383 probe_ent = malloc(sizeof(struct ahci_probe_ent));
384 memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
385 probe_ent->dev = pdev;
387 probe_ent->host_flags = ATA_FLAG_SATA
392 probe_ent->pio_mask = 0x1f;
393 probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
395 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_5, &probe_ent->mmio_base);
396 debug("ahci mmio_base=0x%08x\n", probe_ent->mmio_base);
399 * JMicron-specific fixup:
400 * make sure we're in AHCI mode
402 pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor);
403 if (vendor == 0x197b)
404 pci_write_config_byte(pdev, 0x41, 0xa1);
406 /* initialize adapter */
407 rc = ahci_host_init(probe_ent);
411 ahci_print_info(probe_ent);
420 #define MAX_DATA_BYTE_COUNT (4*1024*1024)
422 static int ahci_fill_sg(u8 port, unsigned char *buf, int buf_len)
424 struct ahci_ioports *pp = &(probe_ent->port[port]);
425 struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
429 sg_count = ((buf_len - 1) / MAX_DATA_BYTE_COUNT) + 1;
430 if (sg_count > AHCI_MAX_SG) {
431 printf("Error:Too much sg!\n");
435 for (i = 0; i < sg_count; i++) {
437 cpu_to_le32((u32) buf + i * MAX_DATA_BYTE_COUNT);
438 ahci_sg->addr_hi = 0;
439 ahci_sg->flags_size = cpu_to_le32(0x3fffff &
440 (buf_len < MAX_DATA_BYTE_COUNT
442 : (MAX_DATA_BYTE_COUNT - 1)));
444 buf_len -= MAX_DATA_BYTE_COUNT;
451 static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 opts)
453 pp->cmd_slot->opts = cpu_to_le32(opts);
454 pp->cmd_slot->status = 0;
455 pp->cmd_slot->tbl_addr = cpu_to_le32(pp->cmd_tbl & 0xffffffff);
456 pp->cmd_slot->tbl_addr_hi = 0;
460 #ifdef CONFIG_AHCI_SETFEATURES_XFER
461 static void ahci_set_feature(u8 port)
463 struct ahci_ioports *pp = &(probe_ent->port[port]);
464 volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio;
465 u32 cmd_fis_len = 5; /* five dwords */
469 memset(fis, 0, sizeof(fis));
472 fis[2] = ATA_CMD_SETF;
473 fis[3] = SETFEATURES_XFER;
474 fis[12] = __ilog2(probe_ent->udma_mask + 1) + 0x40 - 0x01;
476 memcpy((unsigned char *)pp->cmd_tbl, fis, sizeof(fis));
477 ahci_fill_cmd_slot(pp, cmd_fis_len);
478 ahci_dcache_flush_sata_cmd(pp);
479 writel(1, port_mmio + PORT_CMD_ISSUE);
480 readl(port_mmio + PORT_CMD_ISSUE);
482 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
483 WAIT_MS_DATAIO, 0x1)) {
484 printf("set feature error on port %d!\n", port);
490 static int ahci_port_start(u8 port)
492 struct ahci_ioports *pp = &(probe_ent->port[port]);
493 volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio;
497 debug("Enter start port: %d\n", port);
498 port_status = readl(port_mmio + PORT_SCR_STAT);
499 debug("Port %d status: %x\n", port, port_status);
500 if ((port_status & 0xf) != 0x03) {
501 printf("No Link on this port!\n");
505 mem = (u32) malloc(AHCI_PORT_PRIV_DMA_SZ + 2048);
508 printf("No mem for table!\n");
512 mem = (mem + 0x800) & (~0x7ff); /* Aligned to 2048-bytes */
513 memset((u8 *) mem, 0, AHCI_PORT_PRIV_DMA_SZ);
516 * First item in chunk of DMA memory: 32-slot command table,
517 * 32 bytes each in size
520 (struct ahci_cmd_hdr *)(uintptr_t)virt_to_phys((void *)mem);
521 debug("cmd_slot = 0x%x\n", (unsigned)pp->cmd_slot);
522 mem += (AHCI_CMD_SLOT_SZ + 224);
525 * Second item: Received-FIS area
527 pp->rx_fis = virt_to_phys((void *)mem);
528 mem += AHCI_RX_FIS_SZ;
531 * Third item: data area for storing a single command
532 * and its scatter-gather table
534 pp->cmd_tbl = virt_to_phys((void *)mem);
535 debug("cmd_tbl_dma = 0x%x\n", pp->cmd_tbl);
537 mem += AHCI_CMD_TBL_HDR;
539 (struct ahci_sg *)(uintptr_t)virt_to_phys((void *)mem);
541 writel_with_flush((u32) pp->cmd_slot, port_mmio + PORT_LST_ADDR);
543 writel_with_flush(pp->rx_fis, port_mmio + PORT_FIS_ADDR);
545 writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX |
546 PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP |
547 PORT_CMD_START, port_mmio + PORT_CMD);
549 debug("Exit start port %d\n", port);
555 static int ahci_device_data_io(u8 port, u8 *fis, int fis_len, u8 *buf,
556 int buf_len, u8 is_write)
559 struct ahci_ioports *pp = &(probe_ent->port[port]);
560 volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio;
565 debug("Enter %s: for port %d\n", __func__, port);
567 if (port > probe_ent->n_ports) {
568 printf("Invalid port number %d\n", port);
572 port_status = readl(port_mmio + PORT_SCR_STAT);
573 if ((port_status & 0xf) != 0x03) {
574 debug("No Link on port %d!\n", port);
578 memcpy((unsigned char *)pp->cmd_tbl, fis, fis_len);
580 sg_count = ahci_fill_sg(port, buf, buf_len);
581 opts = (fis_len >> 2) | (sg_count << 16) | (is_write << 6);
582 ahci_fill_cmd_slot(pp, opts);
584 ahci_dcache_flush_sata_cmd(pp);
585 ahci_dcache_flush_range((unsigned)buf, (unsigned)buf_len);
587 writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
589 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
590 WAIT_MS_DATAIO, 0x1)) {
591 printf("timeout exit!\n");
595 ahci_dcache_invalidate_range((unsigned)buf, (unsigned)buf_len);
596 debug("%s: %d byte transferred.\n", __func__, pp->cmd_slot->status);
602 static char *ata_id_strcpy(u16 *target, u16 *src, int len)
605 for (i = 0; i < len / 2; i++)
606 target[i] = swab16(src[i]);
607 return (char *)target;
611 static void dump_ataid(hd_driveid_t *ataid)
613 debug("(49)ataid->capability = 0x%x\n", ataid->capability);
614 debug("(53)ataid->field_valid =0x%x\n", ataid->field_valid);
615 debug("(63)ataid->dma_mword = 0x%x\n", ataid->dma_mword);
616 debug("(64)ataid->eide_pio_modes = 0x%x\n", ataid->eide_pio_modes);
617 debug("(75)ataid->queue_depth = 0x%x\n", ataid->queue_depth);
618 debug("(80)ataid->major_rev_num = 0x%x\n", ataid->major_rev_num);
619 debug("(81)ataid->minor_rev_num = 0x%x\n", ataid->minor_rev_num);
620 debug("(82)ataid->command_set_1 = 0x%x\n", ataid->command_set_1);
621 debug("(83)ataid->command_set_2 = 0x%x\n", ataid->command_set_2);
622 debug("(84)ataid->cfsse = 0x%x\n", ataid->cfsse);
623 debug("(85)ataid->cfs_enable_1 = 0x%x\n", ataid->cfs_enable_1);
624 debug("(86)ataid->cfs_enable_2 = 0x%x\n", ataid->cfs_enable_2);
625 debug("(87)ataid->csf_default = 0x%x\n", ataid->csf_default);
626 debug("(88)ataid->dma_ultra = 0x%x\n", ataid->dma_ultra);
627 debug("(93)ataid->hw_config = 0x%x\n", ataid->hw_config);
632 * SCSI INQUIRY command operation.
634 static int ata_scsiop_inquiry(ccb *pccb)
636 static const u8 hdr[] = {
639 0x5, /* claim SPC-3 version compatibility */
647 /* Clean ccb data buffer */
648 memset(pccb->pdata, 0, pccb->datalen);
650 memcpy(pccb->pdata, hdr, sizeof(hdr));
652 if (pccb->datalen <= 35)
655 memset(fis, 0, sizeof(fis));
656 /* Construct the FIS */
657 fis[0] = 0x27; /* Host to device FIS. */
658 fis[1] = 1 << 7; /* Command FIS. */
659 fis[2] = ATA_CMD_IDENT; /* Command byte. */
661 /* Read id from sata */
663 if (!(tmpid = malloc(sizeof(hd_driveid_t))))
666 if (ahci_device_data_io(port, (u8 *) &fis, sizeof(fis), tmpid,
667 sizeof(hd_driveid_t), 0)) {
668 debug("scsi_ahci: SCSI inquiry command failure.\n");
675 ataid[port] = (hd_driveid_t *) tmpid;
677 memcpy(&pccb->pdata[8], "ATA ", 8);
678 ata_id_strcpy((u16 *) &pccb->pdata[16], (u16 *)ataid[port]->model, 16);
679 ata_id_strcpy((u16 *) &pccb->pdata[32], (u16 *)ataid[port]->fw_rev, 4);
681 dump_ataid(ataid[port]);
687 * SCSI READ10/WRITE10 command operation.
689 static int ata_scsiop_read_write(ccb *pccb, u8 is_write)
694 u8 *user_buffer = pccb->pdata;
695 u32 user_buffer_size = pccb->datalen;
697 /* Retrieve the base LBA number from the ccb structure. */
698 memcpy(&lba, pccb->cmd + 2, sizeof(lba));
699 lba = be32_to_cpu(lba);
702 * And the number of blocks.
704 * For 10-byte and 16-byte SCSI R/W commands, transfer
705 * length 0 means transfer 0 block of data.
706 * However, for ATA R/W commands, sector count 0 means
707 * 256 or 65536 sectors, not 0 sectors as in SCSI.
709 * WARNING: one or two older ATA drives treat 0 as 0...
711 blocks = (((u16)pccb->cmd[7]) << 8) | ((u16) pccb->cmd[8]);
713 debug("scsi_ahci: %s %d blocks starting from lba 0x%x\n",
714 is_write ? "write" : "read", (unsigned)lba, blocks);
717 memset(fis, 0, sizeof(fis));
718 fis[0] = 0x27; /* Host to device FIS. */
719 fis[1] = 1 << 7; /* Command FIS. */
720 /* Command byte (read/write). */
721 fis[2] = is_write ? ATA_CMD_WRITE_EXT : ATA_CMD_READ_EXT;
724 u16 now_blocks; /* number of blocks per iteration */
725 u32 transfer_size; /* number of bytes per iteration */
727 now_blocks = min(MAX_SATA_BLOCKS_READ_WRITE, blocks);
729 transfer_size = ATA_BLOCKSIZE * now_blocks;
730 if (transfer_size > user_buffer_size) {
731 printf("scsi_ahci: Error: buffer too small.\n");
735 /* LBA48 SATA command but only use 32bit address range within
736 * that. The next smaller command range (28bit) is too small.
738 fis[4] = (lba >> 0) & 0xff;
739 fis[5] = (lba >> 8) & 0xff;
740 fis[6] = (lba >> 16) & 0xff;
741 fis[7] = 1 << 6; /* device reg: set LBA mode */
742 fis[8] = ((lba >> 24) & 0xff);
743 fis[3] = 0xe0; /* features */
745 /* Block (sector) count */
746 fis[12] = (now_blocks >> 0) & 0xff;
747 fis[13] = (now_blocks >> 8) & 0xff;
749 /* Read/Write from ahci */
750 if (ahci_device_data_io(pccb->target, (u8 *) &fis, sizeof(fis),
751 user_buffer, user_buffer_size,
753 debug("scsi_ahci: SCSI %s10 command failure.\n",
754 is_write ? "WRITE" : "READ");
758 /* If this transaction is a write, do a following flush.
759 * Writes in u-boot are so rare, and the logic to know when is
760 * the last write and do a flush only there is sufficiently
761 * difficult. Just do a flush after every write. This incurs,
762 * usually, one extra flush when the rare writes do happen.
765 if (-EIO == ata_io_flush(pccb->target))
768 user_buffer += transfer_size;
769 user_buffer_size -= transfer_size;
770 blocks -= now_blocks;
779 * SCSI READ CAPACITY10 command operation.
781 static int ata_scsiop_read_capacity10(ccb *pccb)
786 if (!ataid[pccb->target]) {
787 printf("scsi_ahci: SCSI READ CAPACITY10 command failure. "
789 "\tPlease run SCSI commmand INQUIRY firstly!\n");
793 cap = le32_to_cpu(ataid[pccb->target]->lba_capacity);
794 if (cap == 0xfffffff) {
795 unsigned short *cap48 = ataid[pccb->target]->lba48_capacity;
796 if (cap48[2] || cap48[3]) {
799 cap = (le16_to_cpu(cap48[1]) << 16) |
800 (le16_to_cpu(cap48[0]));
804 cap = cpu_to_be32(cap);
805 memcpy(pccb->pdata, &cap, sizeof(cap));
807 block_size = cpu_to_be32((u32)512);
808 memcpy(&pccb->pdata[4], &block_size, 4);
815 * SCSI READ CAPACITY16 command operation.
817 static int ata_scsiop_read_capacity16(ccb *pccb)
822 if (!ataid[pccb->target]) {
823 printf("scsi_ahci: SCSI READ CAPACITY16 command failure. "
825 "\tPlease run SCSI commmand INQUIRY firstly!\n");
829 cap = le32_to_cpu(ataid[pccb->target]->lba_capacity);
830 if (cap == 0xfffffff) {
831 memcpy(&cap, ataid[pccb->target]->lba48_capacity, sizeof(cap));
832 cap = le64_to_cpu(cap);
835 cap = cpu_to_be64(cap);
836 memcpy(pccb->pdata, &cap, sizeof(cap));
838 block_size = cpu_to_be64((u64)512);
839 memcpy(&pccb->pdata[8], &block_size, 8);
846 * SCSI TEST UNIT READY command operation.
848 static int ata_scsiop_test_unit_ready(ccb *pccb)
850 return (ataid[pccb->target]) ? 0 : -EPERM;
854 int scsi_exec(ccb *pccb)
858 switch (pccb->cmd[0]) {
860 ret = ata_scsiop_read_write(pccb, 0);
863 ret = ata_scsiop_read_write(pccb, 1);
865 case SCSI_RD_CAPAC10:
866 ret = ata_scsiop_read_capacity10(pccb);
868 case SCSI_RD_CAPAC16:
869 ret = ata_scsiop_read_capacity16(pccb);
872 ret = ata_scsiop_test_unit_ready(pccb);
875 ret = ata_scsiop_inquiry(pccb);
878 printf("Unsupport SCSI command 0x%02x\n", pccb->cmd[0]);
883 debug("SCSI command 0x%02x ret errno %d\n", pccb->cmd[0], ret);
891 void scsi_low_level_init(int busdevfunc)
896 #ifndef CONFIG_SCSI_AHCI_PLAT
897 ahci_init_one(busdevfunc);
900 linkmap = probe_ent->link_port_map;
902 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
903 if (((linkmap >> i) & 0x01)) {
904 if (ahci_port_start((u8) i)) {
905 printf("Can not start port %d\n", i);
908 #ifdef CONFIG_AHCI_SETFEATURES_XFER
909 ahci_set_feature((u8) i);
915 #ifdef CONFIG_SCSI_AHCI_PLAT
916 int ahci_init(u32 base)
921 memset(ataid, 0, sizeof(ataid));
923 probe_ent = malloc(sizeof(struct ahci_probe_ent));
924 memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
926 probe_ent->host_flags = ATA_FLAG_SATA
931 probe_ent->pio_mask = 0x1f;
932 probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
934 probe_ent->mmio_base = base;
936 /* initialize adapter */
937 rc = ahci_host_init(probe_ent);
941 ahci_print_info(probe_ent);
943 linkmap = probe_ent->link_port_map;
945 for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
946 if (((linkmap >> i) & 0x01)) {
947 if (ahci_port_start((u8) i)) {
948 printf("Can not start port %d\n", i);
951 #ifdef CONFIG_AHCI_SETFEATURES_XFER
952 ahci_set_feature((u8) i);
962 * In the general case of generic rotating media it makes sense to have a
963 * flush capability. It probably even makes sense in the case of SSDs because
964 * one cannot always know for sure what kind of internal cache/flush mechanism
965 * is embodied therein. At first it was planned to invoke this after the last
966 * write to disk and before rebooting. In practice, knowing, a priori, which
967 * is the last write is difficult. Because writing to the disk in u-boot is
968 * very rare, this flush command will be invoked after every block write.
970 static int ata_io_flush(u8 port)
973 struct ahci_ioports *pp = &(probe_ent->port[port]);
974 volatile u8 *port_mmio = (volatile u8 *)pp->port_mmio;
975 u32 cmd_fis_len = 5; /* five dwords */
979 fis[0] = 0x27; /* Host to device FIS. */
980 fis[1] = 1 << 7; /* Command FIS. */
981 fis[2] = ATA_CMD_FLUSH_EXT;
983 memcpy((unsigned char *)pp->cmd_tbl, fis, 20);
984 ahci_fill_cmd_slot(pp, cmd_fis_len);
985 writel_with_flush(1, port_mmio + PORT_CMD_ISSUE);
987 if (waiting_for_cmd_completed(port_mmio + PORT_CMD_ISSUE,
988 WAIT_MS_FLUSH, 0x1)) {
989 debug("scsi_ahci: flush command timeout on port %d.\n", port);
997 void scsi_bus_reset(void)
1003 void scsi_print_error(ccb * pccb)
1005 /*The ahci error info can be read in the ahci driver*/