diff options
Diffstat (limited to 'drivers/block/dwc_ahsata.c')
| -rw-r--r-- | drivers/block/dwc_ahsata.c | 1116 |
1 files changed, 1116 insertions, 0 deletions
diff --git a/drivers/block/dwc_ahsata.c b/drivers/block/dwc_ahsata.c new file mode 100644 index 0000000..3a78490 --- /dev/null +++ b/drivers/block/dwc_ahsata.c @@ -0,0 +1,1116 @@ +/* + * (C) Copyright 2008-2010 Freescale Semiconductor, Inc. + * Terry Lv <r65388@freescale.com> + * + * 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 <asm/arch/mmu.h> +#endif + +#include <libata.h> +#include <ahci.h> +#include <fis.h> + +#include <common.h> +#include <malloc.h> +#include <linux/ctype.h> +#include <asm/errno.h> +#include <asm/io.h> +#include <linux/bitops.h> + +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); +} + +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"); +} + +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(ATA_MAX_SECTORS * ATA_SECT_SIZE, 4); + 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 = 1000; + + 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; +} + |