/* * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. * Terry Lv * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA * * with the reference on libata and ahci drvier in kernel * */ #include "dwc_ahsata.h" #ifdef CONFIG_ARCH_MMU #include #endif #include #include #include #include #include #include #include #include #include struct sata_port_regs { u32 clb; u32 clbu; u32 fb; u32 fbu; u32 is; u32 ie; u32 cmd; u32 res1[1]; u32 tfd; u32 sig; u32 ssts; u32 sctl; u32 serr; u32 sact; u32 ci; u32 sntf; u32 res2[1]; u32 dmacr; u32 res3[1]; u32 phycr; u32 physr; }; struct sata_host_regs { u32 cap; u32 ghc; u32 is; u32 pi; u32 vs; u32 ccc_ctl; u32 ccc_ports; u32 res1[2]; u32 cap2; u32 res2[30]; u32 bistafr; u32 bistcr; u32 bistfctr; u32 bistsr; u32 bistdecr; u32 res3[2]; u32 oobr; u32 res4[8]; u32 timer1ms; u32 res5[1]; u32 gparam1r; u32 gparam2r; u32 pparamr; u32 testr; u32 versionr; u32 idr; }; #define MAX_DATA_BYTES_PER_SG (4 * 1024 * 1024) #define MAX_BYTES_PER_TRANS (AHCI_MAX_SG * MAX_DATA_BYTES_PER_SG) #define writel_with_flush(a, b) do { writel(a, b); readl(b); } while (0) #ifdef CONFIG_ARCH_MMU static u8 *dma_buf; #endif static int is_ready; extern block_dev_desc_t sata_dev_desc[CONFIG_SYS_SATA_MAX_DEVICE]; static inline void mdelay(u32 msec) { u32 i; for (i = 0; i < msec; ++i) udelay(1000); } static inline void sdelay(u32 sec) { u32 i; for (i = 0; i < sec; ++i) mdelay(1000); } #ifdef DWC_AHSATA_DEBUG void dprint_buffer(u8 *buf, s32 len) { s32 i, j; i = 0; j = 0; printf("\n\r"); for (i = 0; i < len; ++i) { printf("%02x ", *buf++); j++; if (j == 16) { printf("\n\r"); j = 0; } } printf("\n\r"); } #endif static inline u32 ahci_port_base(u32 base, u32 port) { return base + 0x100 + (port * 0x80); } static void ahci_setup_port(struct ahci_ioports *port, u32 base, u32 port_idx) { base = ahci_port_base(base, port_idx); } static int waiting_for_cmd_completed(u8 *offset, int timeout_msec, u32 sign) { int i; u32 status; for (i = 0; ((status = readl(offset)) & sign) && i < timeout_msec; ++i) mdelay(1); return (i < timeout_msec) ? 0 : -1; } static int ahci_setup_oobr(struct ahci_probe_ent *probe_ent, int clk) { struct sata_host_regs *host_mmio = (struct sata_host_regs *)probe_ent->mmio_base; writel(SATA_HOST_OOBR_WE, &(host_mmio->oobr)); writel(0x02060b14, &(host_mmio->oobr)); return 0; } static int ahci_host_init(struct ahci_probe_ent *probe_ent) { u32 tmp, cap_save, num_ports; int i, j, timeout = 1000; struct sata_port_regs *port_mmio = NULL; struct sata_host_regs *host_mmio = (struct sata_host_regs *)probe_ent->mmio_base; int clk = mxc_get_clock(MXC_SATA_CLK); cap_save = readl(&(host_mmio->cap)); cap_save |= SATA_HOST_CAP_SSS; /* global controller reset */ tmp = readl(&(host_mmio->ghc)); if ((tmp & SATA_HOST_GHC_HR) == 0) writel_with_flush(tmp | SATA_HOST_GHC_HR, &(host_mmio->ghc)); while ((readl(&(host_mmio->ghc)) & SATA_HOST_GHC_HR) && --timeout) ; if (timeout <= 0) { debug("controller reset failed (0x%x)\n", tmp); return -1; } /* Set timer 1ms */ writel(clk / 1000, &(host_mmio->timer1ms)); ahci_setup_oobr(probe_ent, 0); writel_with_flush(SATA_HOST_GHC_AE, &(host_mmio->ghc)); writel(cap_save, &(host_mmio->cap)); num_ports = (cap_save & SATA_HOST_CAP_NP_MASK) + 1; writel_with_flush((1 << num_ports) - 1, &(host_mmio->pi)); /* Determine which Ports are implemented by the DWC_ahsata, * by reading the PI register. This bit map value aids the * software to determine how many Ports are available and * which Port registers need to be initialized. */ probe_ent->cap = readl(&(host_mmio->cap)); probe_ent->port_map = readl(&(host_mmio->pi)); /* Determine how many command slots the HBA supports */ probe_ent->n_ports = (probe_ent->cap & SATA_HOST_CAP_NP_MASK) + 1; debug("cap 0x%x port_map 0x%x n_ports %d\n", probe_ent->cap, probe_ent->port_map, probe_ent->n_ports); for (i = 0; i < probe_ent->n_ports; i++) { probe_ent->port[i].port_mmio = ahci_port_base((u32)host_mmio, i); port_mmio = (struct sata_port_regs *)probe_ent->port[i].port_mmio; ahci_setup_port(&probe_ent->port[i], (u32)host_mmio, i); /* make sure port is not active */ /* Ensure that the DWC_ahsata is in idle state */ tmp = readl(&(port_mmio->cmd)); /* When P#CMD.ST, P#CMD.CR, P#CMD.FRE and P#CMD.FR * are all cleared, the Port is in an idle state. */ if (tmp & (SATA_PORT_CMD_CR | SATA_PORT_CMD_FR | SATA_PORT_CMD_FRE | SATA_PORT_CMD_ST)) { /* System software places a Port into the idle state by * clearing P#CMD.ST and waiting for P#CMD.CR to return * 0 when read. */ tmp &= ~SATA_PORT_CMD_ST; writel_with_flush(tmp, &(port_mmio->cmd)); /* spec says 500 msecs for each bit, so * this is slightly incorrect. */ mdelay(500); timeout = 1000; while ((readl(&(port_mmio->cmd)) & SATA_PORT_CMD_CR) && --timeout) ; if (timeout <= 0) { debug("port reset failed (0x%x)\n", tmp); return -1; } } /* Spin-up device */ tmp = readl(&(port_mmio->cmd)); writel((tmp | SATA_PORT_CMD_SUD), &(port_mmio->cmd)); /* Wait for spin-up to finish */ timeout = 1000; while (!(readl(&(port_mmio->cmd)) | SATA_PORT_CMD_SUD) && --timeout) ; if (timeout <= 0) { debug("Spin-Up can't finish!\n"); return -1; } for (j = 0; j < 100; ++j) { mdelay(10); tmp = readl(&(port_mmio->ssts)); if (((tmp & SATA_PORT_SSTS_DET_MASK) == 0x3) || ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x1)) break; } /* Wait for COMINIT bit 26 (DIAG_X) in SERR */ timeout = 1000; while (!(readl(&(port_mmio->serr)) | SATA_PORT_SERR_DIAG_X) && --timeout) ; if (timeout <= 0) { debug("Can't find DIAG_X set!\n"); return -1; } /* For each implemented Port, clear the P#SERR * register, by writing ones to each implemented\ * bit location. */ tmp = readl(&(port_mmio->serr)); debug("P#SERR 0x%x\n", tmp); writel(tmp, &(port_mmio->serr)); /* Ack any pending irq events for this port */ tmp = readl(&(host_mmio->is)); debug("IS 0x%x\n", tmp); if (tmp) writel(tmp, &(host_mmio->is)); writel(1 << i, &(host_mmio->is)); /* set irq mask (enables interrupts) */ writel(DEF_PORT_IRQ, &(port_mmio->ie)); /*register linkup ports */ tmp = readl(&(port_mmio->ssts)); debug("Port %d status: 0x%x\n", i, tmp); if ((tmp & SATA_PORT_SSTS_DET_MASK) == 0x03) probe_ent->link_port_map |= (0x01 << i); } tmp = readl(&(host_mmio->ghc)); debug("GHC 0x%x\n", tmp); writel(tmp | SATA_HOST_GHC_IE, &(host_mmio->ghc)); tmp = readl(&(host_mmio->ghc)); debug("GHC 0x%x\n", tmp); return 0; } static void ahci_print_info(struct ahci_probe_ent *probe_ent) { struct sata_host_regs *host_mmio = (struct sata_host_regs *)probe_ent->mmio_base; u32 vers, cap, impl, speed; const char *speed_s; const char *scc_s; vers = readl(&(host_mmio->vs)); cap = probe_ent->cap; impl = probe_ent->port_map; speed = (cap & SATA_HOST_CAP_ISS_MASK) >> SATA_HOST_CAP_ISS_OFFSET; if (speed == 1) speed_s = "1.5"; else if (speed == 2) speed_s = "3"; else speed_s = "?"; scc_s = "SATA"; printf("AHCI %02x%02x.%02x%02x " "%u slots %u ports %s Gbps 0x%x impl %s mode\n", (vers >> 24) & 0xff, (vers >> 16) & 0xff, (vers >> 8) & 0xff, vers & 0xff, ((cap >> 8) & 0x1f) + 1, (cap & 0x1f) + 1, speed_s, impl, scc_s); printf("flags: " "%s%s%s%s%s%s" "%s%s%s%s%s%s%s\n", cap & (1 << 31) ? "64bit " : "", cap & (1 << 30) ? "ncq " : "", cap & (1 << 28) ? "ilck " : "", cap & (1 << 27) ? "stag " : "", cap & (1 << 26) ? "pm " : "", cap & (1 << 25) ? "led " : "", cap & (1 << 24) ? "clo " : "", cap & (1 << 19) ? "nz " : "", cap & (1 << 18) ? "only " : "", cap & (1 << 17) ? "pmp " : "", cap & (1 << 15) ? "pio " : "", cap & (1 << 14) ? "slum " : "", cap & (1 << 13) ? "part " : ""); } static int ahci_init_one(int pdev) { int rc; struct ahci_probe_ent *probe_ent = NULL; probe_ent = malloc(sizeof(struct ahci_probe_ent)); memset(probe_ent, 0, sizeof(struct ahci_probe_ent)); probe_ent->dev = pdev; probe_ent->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NO_ATAPI; probe_ent->mmio_base = CONFIG_DWC_AHSATA_BASE_ADDR; /* initialize adapter */ rc = ahci_host_init(probe_ent); if (rc) goto err_out; ahci_print_info(probe_ent); #ifdef CONFIG_ARCH_MMU dma_buf = (u8 *)memalign(4, ATA_MAX_SECTORS * ATA_SECT_SIZE); if (NULL == dma_buf) { printf("Fail to alloc buf for dma access!\n"); return 0; } #endif /* Save the private struct to block device struct */ sata_dev_desc[pdev].priv = (void *)probe_ent; return 0; err_out: return rc; } static int ahci_fill_sg(struct ahci_probe_ent *probe_ent, u8 port, unsigned char *buf, int buf_len) { struct ahci_ioports *pp = &(probe_ent->port[port]); #ifdef CONFIG_ARCH_MMU struct ahci_sg *ahci_sg = (struct ahci_sg *)ioremap_nocache(iomem_to_phys(pp->cmd_tbl_sg), 0); #else struct ahci_sg *ahci_sg = pp->cmd_tbl_sg; #endif u32 sg_count, max_bytes; int i; max_bytes = MAX_DATA_BYTES_PER_SG; sg_count = ((buf_len - 1) / max_bytes) + 1; if (sg_count > AHCI_MAX_SG) { printf("Error:Too much sg!\n"); return -1; } for (i = 0; i < sg_count; i++) { #ifdef CONFIG_ARCH_MMU ahci_sg->addr = iomem_to_phys(cpu_to_le32((u32)buf + i * max_bytes)); #else ahci_sg->addr = cpu_to_le32((u32)buf + i * max_bytes); #endif ahci_sg->addr_hi = 0; ahci_sg->flags_size = cpu_to_le32(0x3fffff & (buf_len < max_bytes ? (buf_len - 1) : (max_bytes - 1))); ahci_sg++; buf_len -= max_bytes; } return sg_count; } static void ahci_fill_cmd_slot(struct ahci_ioports *pp, u32 cmd_slot, u32 opts) { #ifdef CONFIG_ARCH_MMU struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)ioremap_nocache(iomem_to_phys(pp->cmd_slot + AHCI_CMD_SLOT_SZ * cmd_slot), 0); #else struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)(pp->cmd_slot + AHCI_CMD_SLOT_SZ * cmd_slot); #endif memset(cmd_hdr, 0, AHCI_CMD_SLOT_SZ); cmd_hdr->opts = cpu_to_le32(opts); cmd_hdr->status = 0; #ifdef CONFIG_ARCH_MMU cmd_hdr->tbl_addr = iomem_to_phys(cpu_to_le32(pp->cmd_tbl & 0xffffffff)); #else cmd_hdr->tbl_addr = cpu_to_le32(pp->cmd_tbl & 0xffffffff); #endif cmd_hdr->tbl_addr_hi = 0; } #define AHCI_GET_CMD_SLOT(c) ((c) ? ffs(c) : 0) static int ahci_exec_ata_cmd(struct ahci_probe_ent *probe_ent, u8 port, struct sata_fis_h2d *cfis, u8 *buf, u32 buf_len, s32 is_write) { struct ahci_ioports *pp = &(probe_ent->port[port]); struct sata_port_regs *port_mmio = (struct sata_port_regs *)pp->port_mmio; u32 opts; int sg_count = 0, cmd_slot = 0; cmd_slot = AHCI_GET_CMD_SLOT(readl(&(port_mmio->ci))); if (32 == cmd_slot) { printf("Can't find empty command slot!\n"); return 0; } /* Check xfer length */ if (buf_len > MAX_BYTES_PER_TRANS) { printf("Max transfer length is %dB\n\r", MAX_BYTES_PER_TRANS); return 0; } memcpy((u8 *)(pp->cmd_tbl), cfis, sizeof(struct sata_fis_h2d)); if (buf && buf_len) sg_count = ahci_fill_sg(probe_ent, port, buf, buf_len); opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16); if (is_write) opts |= 0x40; ahci_fill_cmd_slot(pp, cmd_slot, opts); writel_with_flush(1 << cmd_slot, &(port_mmio->ci)); if (waiting_for_cmd_completed((u8 *)&(port_mmio->ci), 10000, 0x1 << cmd_slot)) { printf("timeout exit!\n"); return -1; } debug("ahci_exec_ata_cmd: %d byte transferred.\n", pp->cmd_slot->status); return buf_len; } static void ahci_set_feature(u8 dev, u8 port) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; /*set feature */ memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 1 << 7; cfis->command = ATA_CMD_SET_FEATURES; cfis->features = SETFEATURES_XFER; cfis->sector_count = ffs(probe_ent->udma_mask + 1) + 0x3e; ahci_exec_ata_cmd(probe_ent, port, cfis, NULL, 0, READ_CMD); } static int ahci_port_start(struct ahci_probe_ent *probe_ent, u8 port) { struct ahci_ioports *pp = &(probe_ent->port[port]); struct sata_port_regs *port_mmio = (struct sata_port_regs *)pp->port_mmio; u32 port_status; u32 mem; int timeout = 10000000; debug("Enter start port: %d\n", port); port_status = readl(&(port_mmio->ssts)); debug("Port %d status: %x\n", port, port_status); if ((port_status & 0xf) != 0x03) { printf("No Link on this port!\n"); return -1; } mem = (u32)malloc(AHCI_PORT_PRIV_DMA_SZ + 1024); if (!mem) { free(pp); printf("No mem for table!\n"); return -ENOMEM; } mem = (mem + 0x400) & (~0x3ff); /* Aligned to 1024-bytes */ memset((u8 *)mem, 0, AHCI_PORT_PRIV_DMA_SZ); /* * First item in chunk of DMA memory: 32-slot command table, * 32 bytes each in size */ #ifdef CONFIG_ARCH_MMU pp->cmd_slot = (struct ahci_cmd_hdr *)ioremap_nocache(iomem_to_phys((ulong)mem), AHCI_CMD_SLOT_SZ); #else pp->cmd_slot = (struct ahci_cmd_hdr *)mem; #endif debug("cmd_slot = 0x%x\n", pp->cmd_slot); mem += (AHCI_CMD_SLOT_SZ * DWC_AHSATA_MAX_CMD_SLOTS); /* * Second item: Received-FIS area, 256-Byte aligned */ #ifdef CONFIG_ARCH_MMU pp->rx_fis = (u32)ioremap_nocache(iomem_to_phys((ulong)mem), AHCI_RX_FIS_SZ); #else pp->rx_fis = mem; #endif mem += AHCI_RX_FIS_SZ; /* * Third item: data area for storing a single command * and its scatter-gather table */ #ifdef CONFIG_ARCH_MMU pp->cmd_tbl = (u32)ioremap_nocache(iomem_to_phys((ulong)mem), AHCI_CMD_TBL_HDR); #else pp->cmd_tbl = mem; #endif debug("cmd_tbl_dma = 0x%x\n", pp->cmd_tbl); mem += AHCI_CMD_TBL_HDR; writel_with_flush(0x00004444, &(port_mmio->dmacr)); #ifdef CONFIG_ARCH_MMU pp->cmd_tbl_sg = (struct ahci_sg *)ioremap_nocache(iomem_to_phys((ulong)mem), AHCI_CMD_TBL_HDR); writel_with_flush(iomem_to_phys(pp->cmd_slot), &(port_mmio->clb)); writel_with_flush(iomem_to_phys(pp->rx_fis), &(port_mmio->fb)); #else pp->cmd_tbl_sg = (struct ahci_sg *)mem; writel_with_flush((u32)pp->cmd_slot, &(port_mmio->clb)); writel_with_flush(pp->rx_fis, &(port_mmio->fb)); #endif /* Enable FRE */ writel_with_flush((SATA_PORT_CMD_FRE | readl(&(port_mmio->cmd))), &(port_mmio->cmd)); /* Wait device ready */ while ((readl(&(port_mmio->tfd)) & (SATA_PORT_TFD_STS_ERR | SATA_PORT_TFD_STS_DRQ | SATA_PORT_TFD_STS_BSY)) && --timeout) ; if (timeout <= 0) { debug("Device not ready for BSY, DRQ and" "ERR in TFD!\n"); return -1; } writel_with_flush(PORT_CMD_ICC_ACTIVE | PORT_CMD_FIS_RX | PORT_CMD_POWER_ON | PORT_CMD_SPIN_UP | PORT_CMD_START, &(port_mmio->cmd)); debug("Exit start port %d\n", port); return 0; } int init_sata(int dev) { int i; u32 linkmap; struct ahci_probe_ent *probe_ent = NULL; if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) { printf("The sata index %d is out of ranges\n\r", dev); return -1; } ahci_init_one(dev); probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; linkmap = probe_ent->link_port_map; if (0 == linkmap) { printf("No port device detected!\n"); return 1; } for (i = 0; i < probe_ent->n_ports; i++) { if ((linkmap >> i) && ((linkmap >> i) & 0x01)) { if (ahci_port_start(probe_ent, (u8)i)) { printf("Can not start port %d\n", i); return 1; } /* ahci_set_feature(dev, (u8)i); */ probe_ent->hard_port_no = i; break; } } return 0; } static void dwc_ahsata_print_info(int dev) { block_dev_desc_t *pdev = &(sata_dev_desc[dev]); printf("SATA Device Info:\n\r"); #ifdef CONFIG_SYS_64BIT_LBA printf("S/N: %s\n\rProduct model number: %s\n\r" "Firmware version: %s\n\rCapacity: %lld sectors\n\r", pdev->product, pdev->vendor, pdev->revision, pdev->lba); #else printf("S/N: %s\n\rProduct model number: %s\n\r" "Firmware version: %s\n\rCapacity: %ld sectors\n\r", pdev->product, pdev->vendor, pdev->revision, pdev->lba); #endif } static void dwc_ahsata_identify(int dev, u16 *id) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; u8 port = probe_ent->hard_port_no; memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 0x80; /* is command */ cfis->command = ATA_CMD_ID_ATA; ahci_exec_ata_cmd(probe_ent, port, cfis, (u8 *)id, ATA_ID_WORDS * 2, READ_CMD); ata_swap_buf_le16(id, ATA_ID_WORDS); } static void dwc_ahsata_xfer_mode(int dev, u16 *id) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; probe_ent->pio_mask = id[ATA_ID_PIO_MODES]; probe_ent->udma_mask = id[ATA_ID_UDMA_MODES]; debug("pio %04x, udma %04x\n\r", probe_ent->pio_mask, probe_ent->udma_mask); } static u32 dwc_ahsata_rw_cmd(int dev, u32 start, u32 blkcnt, u8 *buffer, int is_write) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; u8 port = probe_ent->hard_port_no; u32 block; #ifdef CONFIG_ARCH_MMU u8 *dma_buf_virt = NULL; dma_buf_virt = (u8 *)ioremap_nocache((ulong)dma_buf, 0); memset(dma_buf_virt, 0, blkcnt * ATA_SECT_SIZE); #endif block = start; memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 0x80; /* is command */ cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ; cfis->device = ATA_LBA; cfis->device |= (block >> 24) & 0xf; cfis->lba_high = (block >> 16) & 0xff; cfis->lba_mid = (block >> 8) & 0xff; cfis->lba_low = block & 0xff; cfis->sector_count = (u8)(blkcnt & 0xff); #ifdef CONFIG_ARCH_MMU if (is_write) memcpy(dma_buf_virt, buffer, ATA_SECT_SIZE * blkcnt); if (ahci_exec_ata_cmd(probe_ent, port, cfis, dma_buf_virt, ATA_SECT_SIZE * blkcnt, is_write) > 0) { if (!is_write) memcpy(buffer, dma_buf_virt, ATA_SECT_SIZE * blkcnt); } else blkcnt = 0; return blkcnt; #else if (ahci_exec_ata_cmd(probe_ent, port, cfis, buffer, ATA_SECT_SIZE * blkcnt, is_write) > 0) return blkcnt; else return 0; #endif } void dwc_ahsata_flush_cache(int dev) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; u8 port = probe_ent->hard_port_no; memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 0x80; /* is command */ cfis->command = ATA_CMD_FLUSH; ahci_exec_ata_cmd(probe_ent, port, cfis, NULL, 0, 0); } static u32 dwc_ahsata_rw_cmd_ext(int dev, u32 start, lbaint_t blkcnt, u8 *buffer, int is_write) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; u8 port = probe_ent->hard_port_no; u64 block; #ifdef CONFIG_ARCH_MMU u8 *dma_buf_virt = NULL; dma_buf_virt = (u8 *)ioremap_nocache((ulong)dma_buf, 0); memset(dma_buf_virt, 0, blkcnt * ATA_SECT_SIZE); #endif block = (u64)start; memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 0x80; /* is command */ cfis->command = (is_write) ? ATA_CMD_WRITE_EXT : ATA_CMD_READ_EXT; cfis->lba_high_exp = (block >> 40) & 0xff; cfis->lba_mid_exp = (block >> 32) & 0xff; cfis->lba_low_exp = (block >> 24) & 0xff; cfis->lba_high = (block >> 16) & 0xff; cfis->lba_mid = (block >> 8) & 0xff; cfis->lba_low = block & 0xff; cfis->device = ATA_LBA; cfis->sector_count_exp = (blkcnt >> 8) & 0xff; cfis->sector_count = blkcnt & 0xff; #ifdef CONFIG_ARCH_MMU if (is_write) memcpy(dma_buf_virt, buffer, ATA_SECT_SIZE * blkcnt); if (ahci_exec_ata_cmd(probe_ent, port, cfis, dma_buf_virt, ATA_SECT_SIZE * blkcnt, is_write) > 0) { if (!is_write) memcpy(buffer, dma_buf_virt, ATA_SECT_SIZE * blkcnt); } else blkcnt = 0; return blkcnt; #else if (ahci_exec_ata_cmd(probe_ent, port, cfis, buffer, ATA_SECT_SIZE * blkcnt, is_write) > 0) return blkcnt; else return 0; #endif } u32 dwc_ahsata_rw_ncq_cmd(int dev, u32 start, lbaint_t blkcnt, u8 *buffer, int is_write) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; u8 port = probe_ent->hard_port_no; u8 queue_depth; int ncq_channel; u64 block; if (sata_dev_desc[dev].lba48 != 1) { printf("execute FPDMA command on non-LBA48 hard disk\n\r"); return -1; } block = (u64)start; memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 0x80; /* is command */ cfis->command = (is_write) ? ATA_CMD_FPDMA_WRITE : ATA_CMD_FPDMA_READ; cfis->lba_high_exp = (block >> 40) & 0xff; cfis->lba_mid_exp = (block >> 32) & 0xff; cfis->lba_low_exp = (block >> 24) & 0xff; cfis->lba_high = (block >> 16) & 0xff; cfis->lba_mid = (block >> 8) & 0xff; cfis->lba_low = block & 0xff; cfis->device = ATA_LBA; cfis->features_exp = (blkcnt >> 8) & 0xff; cfis->features = blkcnt & 0xff; queue_depth = probe_ent->flags & SATA_FLAG_Q_DEP_MASK; if (queue_depth >= DWC_AHSATA_HC_MAX_CMD) ncq_channel = DWC_AHSATA_HC_MAX_CMD - 1; else ncq_channel = queue_depth - 1; /* Use the latest queue */ ahci_exec_ata_cmd(probe_ent, port, cfis, buffer, ATA_SECT_SIZE * blkcnt, is_write); return blkcnt; } void dwc_ahsata_flush_cache_ext(int dev) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; struct sata_fis_h2d h2d, *cfis = &h2d; u8 port = probe_ent->hard_port_no; memset(cfis, 0, sizeof(struct sata_fis_h2d)); cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D; cfis->pm_port_c = 0x80; /* is command */ cfis->command = ATA_CMD_FLUSH_EXT; ahci_exec_ata_cmd(probe_ent, port, cfis, NULL, 0, 0); } static void dwc_ahsata_init_wcache(int dev, u16 *id) { struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id)) probe_ent->flags |= SATA_FLAG_WCACHE; if (ata_id_has_flush(id)) probe_ent->flags |= SATA_FLAG_FLUSH; if (ata_id_has_flush_ext(id)) probe_ent->flags |= SATA_FLAG_FLUSH_EXT; } u32 ata_low_level_rw_lba48(int dev, u32 blknr, lbaint_t blkcnt, void *buffer, int is_write) { u32 start, blks; u8 *addr; int max_blks; start = blknr; blks = blkcnt; addr = (u8 *)buffer; #ifdef CONFIG_ARCH_MMU max_blks = ATA_MAX_SECTORS; #else max_blks = ATA_MAX_SECTORS_LBA48; #endif do { if (blks > max_blks) { if (max_blks != dwc_ahsata_rw_cmd_ext(dev, start, max_blks, addr, is_write)) return 0; start += max_blks; blks -= max_blks; addr += ATA_SECT_SIZE * max_blks; } else { if (blks != dwc_ahsata_rw_cmd_ext(dev, start, blks, addr, is_write)) return 0; start += blks; blks = 0; addr += ATA_SECT_SIZE * blks; } } while (blks != 0); return blkcnt; } u32 ata_low_level_rw_lba28(int dev, u32 blknr, lbaint_t blkcnt, void *buffer, int is_write) { u32 start, blks; u8 *addr; int max_blks; start = blknr; blks = blkcnt; addr = (u8 *)buffer; max_blks = ATA_MAX_SECTORS; do { if (blks > max_blks) { if (max_blks != dwc_ahsata_rw_cmd(dev, start, max_blks, addr, is_write)) return 0; start += max_blks; blks -= max_blks; addr += ATA_SECT_SIZE * max_blks; } else { if (blks != dwc_ahsata_rw_cmd(dev, start, blks, addr, is_write)) return 0; start += blks; blks = 0; addr += ATA_SECT_SIZE * blks; } } while (blks != 0); return blkcnt; } /* * SATA interface between low level driver and command layer */ ulong sata_read(int dev, unsigned long blknr, lbaint_t blkcnt, void *buffer) { u32 rc; if (sata_dev_desc[dev].lba48) rc = ata_low_level_rw_lba48(dev, blknr, blkcnt, buffer, READ_CMD); else rc = ata_low_level_rw_lba28(dev, blknr, blkcnt, buffer, READ_CMD); return rc; } ulong sata_write(int dev, unsigned long blknr, lbaint_t blkcnt, void *buffer) { u32 rc; struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; u32 flags = probe_ent->flags; if (sata_dev_desc[dev].lba48) { rc = ata_low_level_rw_lba48(dev, blknr, blkcnt, buffer, WRITE_CMD); if ((flags & SATA_FLAG_WCACHE) && (flags & SATA_FLAG_FLUSH_EXT)) dwc_ahsata_flush_cache_ext(dev); } else { rc = ata_low_level_rw_lba28(dev, blknr, blkcnt, buffer, WRITE_CMD); if ((flags & SATA_FLAG_WCACHE) && (flags & SATA_FLAG_FLUSH)) dwc_ahsata_flush_cache(dev); } return rc; } int scan_sata(int dev) { u8 serial[ATA_ID_SERNO_LEN + 1] = { 0 }; u8 firmware[ATA_ID_FW_REV_LEN + 1] = { 0 }; u8 product[ATA_ID_PROD_LEN + 1] = { 0 }; u16 *id; u64 n_sectors; struct ahci_probe_ent *probe_ent = (struct ahci_probe_ent *)sata_dev_desc[dev].priv; u8 port = probe_ent->hard_port_no; block_dev_desc_t *pdev = &(sata_dev_desc[dev]); id = (u16 *)malloc(ATA_ID_WORDS * 2); if (!id) { printf("id malloc failed\n\r"); return -1; } /* Identify device to get information */ dwc_ahsata_identify(dev, id); /* Serial number */ ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial)); memcpy(pdev->product, serial, sizeof(serial)); /* Firmware version */ ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware)); memcpy(pdev->revision, firmware, sizeof(firmware)); /* Product model */ ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product)); memcpy(pdev->vendor, product, sizeof(product)); /* Totoal sectors */ n_sectors = ata_id_n_sectors(id); pdev->lba = (u32)n_sectors; pdev->type = DEV_TYPE_HARDDISK; pdev->blksz = ATA_SECT_SIZE; pdev->lun = 0 ; /* Check if support LBA48 */ if (ata_id_has_lba48(id)) { pdev->lba48 = 1; debug("Device support LBA48\n\r"); } /* Get the NCQ queue depth from device */ probe_ent->flags &= (~SATA_FLAG_Q_DEP_MASK); probe_ent->flags |= ata_id_queue_depth(id); /* Get the xfer mode from device */ dwc_ahsata_xfer_mode(dev, id); /* Get the write cache status from device */ dwc_ahsata_init_wcache(dev, id); /* Set the xfer mode to highest speed */ ahci_set_feature(dev, port); free((void *)id); dwc_ahsata_print_info(dev); is_ready = 1; return 0; }