diff options
Diffstat (limited to 'drivers/ata/sata_mv.c')
| -rw-r--r-- | drivers/ata/sata_mv.c | 1051 |
1 files changed, 1051 insertions, 0 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c new file mode 100644 index 0000000000..78e3da442d --- /dev/null +++ b/drivers/ata/sata_mv.c @@ -0,0 +1,1051 @@ +/* + * Copyright (C) Excito Elektronik i Skåne AB, 2010. + * Author: Tor Krill <tor@excito.com> + * + * Copyright (C) 2015 Stefan Roese <sr@denx.de> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* + * This driver supports the SATA controller of some Mavell SoC's. + * Here a (most likely incomplete) list of the supported SoC's: + * - Kirkwood + * - Armada 370 + * - Armada XP + * + * This driver implementation is an alternative to the already available + * driver via the "ide" commands interface (drivers/block/mvsata_ide.c). + * But this driver only supports PIO mode and as this new driver also + * supports transfer via DMA, its much faster. + * + * Please note, that the newer SoC's (e.g. Armada 38x) are not supported + * by this driver. As they have an AHCI compatible SATA controller + * integrated. + */ + +/* + * TODO: + * Better error recovery + * No support for using PRDs (Thus max 64KB transfers) + * No NCQ support + * No port multiplier support + */ + +#include <common.h> +#include <fis.h> +#include <libata.h> +#include <malloc.h> +#include <sata.h> +#include <linux/errno.h> +#include <asm/io.h> +#include <linux/mbus.h> + +#if defined(CONFIG_KIRKWOOD) +#include <asm/arch/kirkwood.h> +#define SATAHC_BASE KW_SATA_BASE +#else +#include <asm/arch/soc.h> +#define SATAHC_BASE MVEBU_AXP_SATA_BASE +#endif + +#define SATA0_BASE (SATAHC_BASE + 0x2000) +#define SATA1_BASE (SATAHC_BASE + 0x4000) + +/* EDMA registers */ +#define EDMA_CFG 0x000 +#define EDMA_CFG_NCQ (1 << 5) +#define EDMA_CFG_EQUE (1 << 9) +#define EDMA_TIMER 0x004 +#define EDMA_IECR 0x008 +#define EDMA_IEMR 0x00c +#define EDMA_RQBA_HI 0x010 +#define EDMA_RQIPR 0x014 +#define EDMA_RQIPR_IPMASK (0x1f << 5) +#define EDMA_RQIPR_IPSHIFT 5 +#define EDMA_RQOPR 0x018 +#define EDMA_RQOPR_OPMASK (0x1f << 5) +#define EDMA_RQOPR_OPSHIFT 5 +#define EDMA_RSBA_HI 0x01c +#define EDMA_RSIPR 0x020 +#define EDMA_RSIPR_IPMASK (0x1f << 3) +#define EDMA_RSIPR_IPSHIFT 3 +#define EDMA_RSOPR 0x024 +#define EDMA_RSOPR_OPMASK (0x1f << 3) +#define EDMA_RSOPR_OPSHIFT 3 +#define EDMA_CMD 0x028 +#define EDMA_CMD_ENEDMA (0x01 << 0) +#define EDMA_CMD_DISEDMA (0x01 << 1) +#define EDMA_CMD_ATARST (0x01 << 2) +#define EDMA_CMD_FREEZE (0x01 << 4) +#define EDMA_TEST_CTL 0x02c +#define EDMA_STATUS 0x030 +#define EDMA_IORTO 0x034 +#define EDMA_CDTR 0x040 +#define EDMA_HLTCND 0x060 +#define EDMA_NTSR 0x094 + +/* Basic DMA registers */ +#define BDMA_CMD 0x224 +#define BDMA_STATUS 0x228 +#define BDMA_DTLB 0x22c +#define BDMA_DTHB 0x230 +#define BDMA_DRL 0x234 +#define BDMA_DRH 0x238 + +/* SATA Interface registers */ +#define SIR_ICFG 0x050 +#define SIR_CFG_GEN2EN (0x1 << 7) +#define SIR_PLL_CFG 0x054 +#define SIR_SSTATUS 0x300 +#define SSTATUS_DET_MASK (0x0f << 0) +#define SIR_SERROR 0x304 +#define SIR_SCONTROL 0x308 +#define SIR_SCONTROL_DETEN (0x01 << 0) +#define SIR_LTMODE 0x30c +#define SIR_LTMODE_NELBE (0x01 << 7) +#define SIR_PHYMODE3 0x310 +#define SIR_PHYMODE4 0x314 +#define SIR_PHYMODE1 0x32c +#define SIR_PHYMODE2 0x330 +#define SIR_BIST_CTRL 0x334 +#define SIR_BIST_DW1 0x338 +#define SIR_BIST_DW2 0x33c +#define SIR_SERR_IRQ_MASK 0x340 +#define SIR_SATA_IFCTRL 0x344 +#define SIR_SATA_TESTCTRL 0x348 +#define SIR_SATA_IFSTATUS 0x34c +#define SIR_VEND_UNIQ 0x35c +#define SIR_FIS_CFG 0x360 +#define SIR_FIS_IRQ_CAUSE 0x364 +#define SIR_FIS_IRQ_MASK 0x368 +#define SIR_FIS_DWORD0 0x370 +#define SIR_FIS_DWORD1 0x374 +#define SIR_FIS_DWORD2 0x378 +#define SIR_FIS_DWORD3 0x37c +#define SIR_FIS_DWORD4 0x380 +#define SIR_FIS_DWORD5 0x384 +#define SIR_FIS_DWORD6 0x388 +#define SIR_PHYM9_GEN2 0x398 +#define SIR_PHYM9_GEN1 0x39c +#define SIR_PHY_CFG 0x3a0 +#define SIR_PHYCTL 0x3a4 +#define SIR_PHYM10 0x3a8 +#define SIR_PHYM12 0x3b0 + +/* Shadow registers */ +#define PIO_DATA 0x100 +#define PIO_ERR_FEATURES 0x104 +#define PIO_SECTOR_COUNT 0x108 +#define PIO_LBA_LOW 0x10c +#define PIO_LBA_MID 0x110 +#define PIO_LBA_HI 0x114 +#define PIO_DEVICE 0x118 +#define PIO_CMD_STATUS 0x11c +#define PIO_STATUS_ERR (0x01 << 0) +#define PIO_STATUS_DRQ (0x01 << 3) +#define PIO_STATUS_DF (0x01 << 5) +#define PIO_STATUS_DRDY (0x01 << 6) +#define PIO_STATUS_BSY (0x01 << 7) +#define PIO_CTRL_ALTSTAT 0x120 + +/* SATAHC arbiter registers */ +#define SATAHC_CFG 0x000 +#define SATAHC_RQOP 0x004 +#define SATAHC_RQIP 0x008 +#define SATAHC_ICT 0x00c +#define SATAHC_ITT 0x010 +#define SATAHC_ICR 0x014 +#define SATAHC_ICR_PORT0 (0x01 << 0) +#define SATAHC_ICR_PORT1 (0x01 << 1) +#define SATAHC_MIC 0x020 +#define SATAHC_MIM 0x024 +#define SATAHC_LED_CFG 0x02c + +#define REQUEST_QUEUE_SIZE 32 +#define RESPONSE_QUEUE_SIZE REQUEST_QUEUE_SIZE + +struct crqb { + u32 dtb_low; /* DW0 */ + u32 dtb_high; /* DW1 */ + u32 control_flags; /* DW2 */ + u32 drb_count; /* DW3 */ + u32 ata_cmd_feat; /* DW4 */ + u32 ata_addr; /* DW5 */ + u32 ata_addr_exp; /* DW6 */ + u32 ata_sect_count; /* DW7 */ +}; + +#define CRQB_ALIGN 0x400 + +#define CRQB_CNTRLFLAGS_DIR (0x01 << 0) +#define CRQB_CNTRLFLAGS_DQTAGMASK (0x1f << 1) +#define CRQB_CNTRLFLAGS_DQTAGSHIFT 1 +#define CRQB_CNTRLFLAGS_PMPORTMASK (0x0f << 12) +#define CRQB_CNTRLFLAGS_PMPORTSHIFT 12 +#define CRQB_CNTRLFLAGS_PRDMODE (0x01 << 16) +#define CRQB_CNTRLFLAGS_HQTAGMASK (0x1f << 17) +#define CRQB_CNTRLFLAGS_HQTAGSHIFT 17 + +#define CRQB_CMDFEAT_CMDMASK (0xff << 16) +#define CRQB_CMDFEAT_CMDSHIFT 16 +#define CRQB_CMDFEAT_FEATMASK (0xff << 16) +#define CRQB_CMDFEAT_FEATSHIFT 24 + +#define CRQB_ADDR_LBA_LOWMASK (0xff << 0) +#define CRQB_ADDR_LBA_LOWSHIFT 0 +#define CRQB_ADDR_LBA_MIDMASK (0xff << 8) +#define CRQB_ADDR_LBA_MIDSHIFT 8 +#define CRQB_ADDR_LBA_HIGHMASK (0xff << 16) +#define CRQB_ADDR_LBA_HIGHSHIFT 16 +#define CRQB_ADDR_DEVICE_MASK (0xff << 24) +#define CRQB_ADDR_DEVICE_SHIFT 24 + +#define CRQB_ADDR_LBA_LOW_EXP_MASK (0xff << 0) +#define CRQB_ADDR_LBA_LOW_EXP_SHIFT 0 +#define CRQB_ADDR_LBA_MID_EXP_MASK (0xff << 8) +#define CRQB_ADDR_LBA_MID_EXP_SHIFT 8 +#define CRQB_ADDR_LBA_HIGH_EXP_MASK (0xff << 16) +#define CRQB_ADDR_LBA_HIGH_EXP_SHIFT 16 +#define CRQB_ADDR_FEATURE_EXP_MASK (0xff << 24) +#define CRQB_ADDR_FEATURE_EXP_SHIFT 24 + +#define CRQB_SECTCOUNT_COUNT_MASK (0xff << 0) +#define CRQB_SECTCOUNT_COUNT_SHIFT 0 +#define CRQB_SECTCOUNT_COUNT_EXP_MASK (0xff << 8) +#define CRQB_SECTCOUNT_COUNT_EXP_SHIFT 8 + +#define MVSATA_WIN_CONTROL(w) (MVEBU_AXP_SATA_BASE + 0x30 + ((w) << 4)) +#define MVSATA_WIN_BASE(w) (MVEBU_AXP_SATA_BASE + 0x34 + ((w) << 4)) + +struct eprd { + u32 phyaddr_low; + u32 bytecount_eot; + u32 phyaddr_hi; + u32 reserved; +}; + +#define EPRD_PHYADDR_MASK 0xfffffffe +#define EPRD_BYTECOUNT_MASK 0x0000ffff +#define EPRD_EOT (0x01 << 31) + +struct crpb { + u32 id; + u32 flags; + u32 timestamp; +}; + +#define CRPB_ALIGN 0x100 + +#define READ_CMD 0 +#define WRITE_CMD 1 + +/* + * Since we don't use PRDs yet max transfer size + * is 64KB + */ +#define MV_ATA_MAX_SECTORS (65535 / ATA_SECT_SIZE) + +/* Keep track if hw is initialized or not */ +static u32 hw_init; + +struct mv_priv { + char name[12]; + u32 link; + u32 regbase; + u32 queue_depth; + u16 pio; + u16 mwdma; + u16 udma; + + void *crqb_alloc; + struct crqb *request; + + void *crpb_alloc; + struct crpb *response; +}; + +static int ata_wait_register(u32 *addr, u32 mask, u32 val, u32 timeout_msec) +{ + ulong start; + + start = get_timer(0); + do { + if ((in_le32(addr) & mask) == val) + return 0; + } while (get_timer(start) < timeout_msec); + + return -ETIMEDOUT; +} + +/* Cut from sata_mv in linux kernel */ +static int mv_stop_edma_engine(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + int i; + + /* Disable eDMA. The disable bit auto clears. */ + out_le32(priv->regbase + EDMA_CMD, EDMA_CMD_DISEDMA); + + /* Wait for the chip to confirm eDMA is off. */ + for (i = 10000; i > 0; i--) { + u32 reg = in_le32(priv->regbase + EDMA_CMD); + if (!(reg & EDMA_CMD_ENEDMA)) { + debug("EDMA stop on port %d succesful\n", port); + return 0; + } + udelay(10); + } + debug("EDMA stop on port %d failed\n", port); + return -1; +} + +static int mv_start_edma_engine(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + u32 tmp; + + /* Check preconditions */ + tmp = in_le32(priv->regbase + SIR_SSTATUS); + if ((tmp & SSTATUS_DET_MASK) != 0x03) { + printf("Device error on port: %d\n", port); + return -1; + } + + tmp = in_le32(priv->regbase + PIO_CMD_STATUS); + if (tmp & (ATA_BUSY | ATA_DRQ)) { + printf("Device not ready on port: %d\n", port); + return -1; + } + + /* Clear interrupt cause */ + out_le32(priv->regbase + EDMA_IECR, 0x0); + + tmp = in_le32(SATAHC_BASE + SATAHC_ICR); + tmp &= ~(port == 0 ? SATAHC_ICR_PORT0 : SATAHC_ICR_PORT1); + out_le32(SATAHC_BASE + SATAHC_ICR, tmp); + + /* Configure edma operation */ + tmp = in_le32(priv->regbase + EDMA_CFG); + tmp &= ~EDMA_CFG_NCQ; /* No NCQ */ + tmp &= ~EDMA_CFG_EQUE; /* Dont queue operations */ + out_le32(priv->regbase + EDMA_CFG, tmp); + + out_le32(priv->regbase + SIR_FIS_IRQ_CAUSE, 0x0); + + /* Configure fis, set all to no-wait for now */ + out_le32(priv->regbase + SIR_FIS_CFG, 0x0); + + /* Setup request queue */ + out_le32(priv->regbase + EDMA_RQBA_HI, 0x0); + out_le32(priv->regbase + EDMA_RQIPR, priv->request); + out_le32(priv->regbase + EDMA_RQOPR, 0x0); + + /* Setup response queue */ + out_le32(priv->regbase + EDMA_RSBA_HI, 0x0); + out_le32(priv->regbase + EDMA_RSOPR, priv->response); + out_le32(priv->regbase + EDMA_RSIPR, 0x0); + + /* Start edma */ + out_le32(priv->regbase + EDMA_CMD, EDMA_CMD_ENEDMA); + + return 0; +} + +static int mv_reset_channel(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + + /* Make sure edma is stopped */ + mv_stop_edma_engine(port); + + out_le32(priv->regbase + EDMA_CMD, EDMA_CMD_ATARST); + udelay(25); /* allow reset propagation */ + out_le32(priv->regbase + EDMA_CMD, 0); + mdelay(10); + + return 0; +} + +static void mv_reset_port(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + + mv_reset_channel(port); + + out_le32(priv->regbase + EDMA_CMD, 0x0); + out_le32(priv->regbase + EDMA_CFG, 0x101f); + out_le32(priv->regbase + EDMA_IECR, 0x0); + out_le32(priv->regbase + EDMA_IEMR, 0x0); + out_le32(priv->regbase + EDMA_RQBA_HI, 0x0); + out_le32(priv->regbase + EDMA_RQIPR, 0x0); + out_le32(priv->regbase + EDMA_RQOPR, 0x0); + out_le32(priv->regbase + EDMA_RSBA_HI, 0x0); + out_le32(priv->regbase + EDMA_RSIPR, 0x0); + out_le32(priv->regbase + EDMA_RSOPR, 0x0); + out_le32(priv->regbase + EDMA_IORTO, 0xfa); +} + +static void mv_reset_one_hc(void) +{ + out_le32(SATAHC_BASE + SATAHC_ICT, 0x00); + out_le32(SATAHC_BASE + SATAHC_ITT, 0x00); + out_le32(SATAHC_BASE + SATAHC_ICR, 0x00); +} + +static int probe_port(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + int tries, tries2, set15 = 0; + u32 tmp; + + debug("Probe port: %d\n", port); + + for (tries = 0; tries < 2; tries++) { + /* Clear SError */ + out_le32(priv->regbase + SIR_SERROR, 0x0); + + /* trigger com-init */ + tmp = in_le32(priv->regbase + SIR_SCONTROL); + tmp = (tmp & 0x0f0) | 0x300 | SIR_SCONTROL_DETEN; + out_le32(priv->regbase + SIR_SCONTROL, tmp); + + mdelay(1); + + tmp = in_le32(priv->regbase + SIR_SCONTROL); + tries2 = 5; + do { + tmp = (tmp & 0x0f0) | 0x300; + out_le32(priv->regbase + SIR_SCONTROL, tmp); + mdelay(10); + tmp = in_le32(priv->regbase + SIR_SCONTROL); + } while ((tmp & 0xf0f) != 0x300 && tries2--); + + mdelay(10); + + for (tries2 = 0; tries2 < 200; tries2++) { + tmp = in_le32(priv->regbase + SIR_SSTATUS); + if ((tmp & SSTATUS_DET_MASK) == 0x03) { + debug("Found device on port\n"); + return 0; + } + mdelay(1); + } + + if ((tmp & SSTATUS_DET_MASK) == 0) { + debug("No device attached on port %d\n", port); + return -ENODEV; + } + + if (!set15) { + /* Try on 1.5Gb/S */ + debug("Try 1.5Gb link\n"); + set15 = 1; + out_le32(priv->regbase + SIR_SCONTROL, 0x304); + + tmp = in_le32(priv->regbase + SIR_ICFG); + tmp &= ~SIR_CFG_GEN2EN; + out_le32(priv->regbase + SIR_ICFG, tmp); + + mv_reset_channel(port); + } + } + + debug("Failed to probe port\n"); + return -1; +} + +/* Get request queue in pointer */ +static int get_reqip(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + u32 tmp; + + tmp = in_le32(priv->regbase + EDMA_RQIPR) & EDMA_RQIPR_IPMASK; + tmp = tmp >> EDMA_RQIPR_IPSHIFT; + + return tmp; +} + +static void set_reqip(int port, int reqin) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + u32 tmp; + + tmp = in_le32(priv->regbase + EDMA_RQIPR) & ~EDMA_RQIPR_IPMASK; + tmp |= ((reqin << EDMA_RQIPR_IPSHIFT) & EDMA_RQIPR_IPMASK); + out_le32(priv->regbase + EDMA_RQIPR, tmp); +} + +/* Get next available slot, ignoring possible overwrite */ +static int get_next_reqip(int port) +{ + int slot = get_reqip(port); + slot = (slot + 1) % REQUEST_QUEUE_SIZE; + return slot; +} + +/* Get response queue in pointer */ +static int get_rspip(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + u32 tmp; + + tmp = in_le32(priv->regbase + EDMA_RSIPR) & EDMA_RSIPR_IPMASK; + tmp = tmp >> EDMA_RSIPR_IPSHIFT; + + return tmp; +} + +/* Get response queue out pointer */ +static int get_rspop(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + u32 tmp; + + tmp = in_le32(priv->regbase + EDMA_RSOPR) & EDMA_RSOPR_OPMASK; + tmp = tmp >> EDMA_RSOPR_OPSHIFT; + return tmp; +} + +/* Get next response queue pointer */ +static int get_next_rspop(int port) +{ + return (get_rspop(port) + 1) % RESPONSE_QUEUE_SIZE; +} + +/* Set response queue pointer */ +static void set_rspop(int port, int reqin) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + u32 tmp; + + tmp = in_le32(priv->regbase + EDMA_RSOPR) & ~EDMA_RSOPR_OPMASK; + tmp |= ((reqin << EDMA_RSOPR_OPSHIFT) & EDMA_RSOPR_OPMASK); + + out_le32(priv->regbase + EDMA_RSOPR, tmp); +} + +static int wait_dma_completion(int port, int index, u32 timeout_msec) +{ + u32 tmp, res; + + tmp = port == 0 ? SATAHC_ICR_PORT0 : SATAHC_ICR_PORT1; + res = ata_wait_register((u32 *)(SATAHC_BASE + SATAHC_ICR), tmp, + tmp, timeout_msec); + if (res) + printf("Failed to wait for completion on port %d\n", port); + + return res; +} + +static void process_responses(int port) +{ +#ifdef DEBUG + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; +#endif + u32 tmp; + u32 outind = get_rspop(port); + + /* Ack interrupts */ + tmp = in_le32(SATAHC_BASE + SATAHC_ICR); + if (port == 0) + tmp &= ~(BIT(0) | BIT(8)); + else + tmp &= ~(BIT(1) | BIT(9)); + tmp &= ~(BIT(4)); + out_le32(SATAHC_BASE + SATAHC_ICR, tmp); + + while (get_rspip(port) != outind) { +#ifdef DEBUG + debug("Response index %d flags %08x on port %d\n", outind, + priv->response[outind].flags, port); +#endif + outind = get_next_rspop(port); + set_rspop(port, outind); + } +} + +static int mv_ata_exec_ata_cmd(int port, struct sata_fis_h2d *cfis, + u8 *buffer, u32 len, u32 iswrite) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + struct crqb *req; + int slot; + u32 start; + + if (len >= 64 * 1024) { + printf("We only support <64K transfers for now\n"); + return -1; + } + + /* Initialize request */ + slot = get_reqip(port); + memset(&priv->request[slot], 0, sizeof(struct crqb)); + req = &priv->request[slot]; + + req->dtb_low = (u32)buffer; + + /* Dont use PRDs */ + req->control_flags = CRQB_CNTRLFLAGS_PRDMODE; + req->control_flags |= iswrite ? 0 : CRQB_CNTRLFLAGS_DIR; + req->control_flags |= + ((cfis->pm_port_c << CRQB_CNTRLFLAGS_PMPORTSHIFT) + & CRQB_CNTRLFLAGS_PMPORTMASK); + + req->drb_count = len; + + req->ata_cmd_feat = (cfis->command << CRQB_CMDFEAT_CMDSHIFT) & + CRQB_CMDFEAT_CMDMASK; + req->ata_cmd_feat |= (cfis->features << CRQB_CMDFEAT_FEATSHIFT) & + CRQB_CMDFEAT_FEATMASK; + + req->ata_addr = (cfis->lba_low << CRQB_ADDR_LBA_LOWSHIFT) & + CRQB_ADDR_LBA_LOWMASK; + req->ata_addr |= (cfis->lba_mid << CRQB_ADDR_LBA_MIDSHIFT) & + CRQB_ADDR_LBA_MIDMASK; + req->ata_addr |= (cfis->lba_high << CRQB_ADDR_LBA_HIGHSHIFT) & + CRQB_ADDR_LBA_HIGHMASK; + req->ata_addr |= (cfis->device << CRQB_ADDR_DEVICE_SHIFT) & + CRQB_ADDR_DEVICE_MASK; + + req->ata_addr_exp = (cfis->lba_low_exp << CRQB_ADDR_LBA_LOW_EXP_SHIFT) & + CRQB_ADDR_LBA_LOW_EXP_MASK; + req->ata_addr_exp |= + (cfis->lba_mid_exp << CRQB_ADDR_LBA_MID_EXP_SHIFT) & + CRQB_ADDR_LBA_MID_EXP_MASK; + req->ata_addr_exp |= + (cfis->lba_high_exp << CRQB_ADDR_LBA_HIGH_EXP_SHIFT) & + CRQB_ADDR_LBA_HIGH_EXP_MASK; + req->ata_addr_exp |= + (cfis->features_exp << CRQB_ADDR_FEATURE_EXP_SHIFT) & + CRQB_ADDR_FEATURE_EXP_MASK; + + req->ata_sect_count = + (cfis->sector_count << CRQB_SECTCOUNT_COUNT_SHIFT) & + CRQB_SECTCOUNT_COUNT_MASK; + req->ata_sect_count |= + (cfis->sector_count_exp << CRQB_SECTCOUNT_COUNT_EXP_SHIFT) & + CRQB_SECTCOUNT_COUNT_EXP_MASK; + + /* Flush data */ + start = (u32)req & ~(ARCH_DMA_MINALIGN - 1); + flush_dcache_range(start, + start + ALIGN(sizeof(*req), ARCH_DMA_MINALIGN)); + + /* Trigger operation */ + slot = get_next_reqip(port); + set_reqip(port, slot); + + /* Wait for completion */ + if (wait_dma_completion(port, slot, 10000)) { + printf("ATA operation timed out\n"); + return -1; + } + + process_responses(port); + + /* Invalidate data on read */ + if (buffer && len) { + start = (u32)buffer & ~(ARCH_DMA_MINALIGN - 1); + invalidate_dcache_range(start, + start + ALIGN(len, ARCH_DMA_MINALIGN)); + } + + return len; +} + +static u32 mv_sata_rw_cmd_ext(int port, lbaint_t start, u32 blkcnt, + u8 *buffer, int is_write) +{ + struct sata_fis_h2d cfis; + u32 res; + u64 block; + + block = (u64)start; + + memset(&cfis, 0, sizeof(struct sata_fis_h2d)); + + cfis.fis_type = SATA_FIS_TYPE_REGISTER_H2D; + 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; + + res = mv_ata_exec_ata_cmd(port, &cfis, buffer, ATA_SECT_SIZE * blkcnt, + is_write); + + return res >= 0 ? blkcnt : res; +} + +static u32 mv_sata_rw_cmd(int port, lbaint_t start, u32 blkcnt, u8 *buffer, + int is_write) +{ + struct sata_fis_h2d cfis; + lbaint_t block; + u32 res; + + block = start; + + memset(&cfis, 0, sizeof(struct sata_fis_h2d)); + + cfis.fis_type = SATA_FIS_TYPE_REGISTER_H2D; + 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); + + res = mv_ata_exec_ata_cmd(port, &cfis, buffer, ATA_SECT_SIZE * blkcnt, + is_write); + + return res >= 0 ? blkcnt : res; +} + +static u32 ata_low_level_rw(int dev, lbaint_t blknr, lbaint_t blkcnt, + void *buffer, int is_write) +{ + lbaint_t start, blks; + u8 *addr; + int max_blks; + + debug("%s: %ld %ld\n", __func__, blknr, blkcnt); + + start = blknr; + blks = blkcnt; + addr = (u8 *)buffer; + + max_blks = MV_ATA_MAX_SECTORS; + do { + if (blks > max_blks) { + if (sata_dev_desc[dev].lba48) { + mv_sata_rw_cmd_ext(dev, start, max_blks, addr, + is_write); + } else { + mv_sata_rw_cmd(dev, start, max_blks, addr, + is_write); + } + start += max_blks; + blks -= max_blks; + addr += ATA_SECT_SIZE * max_blks; + } else { + if (sata_dev_desc[dev].lba48) { + mv_sata_rw_cmd_ext(dev, start, blks, addr, + is_write); + } else { + mv_sata_rw_cmd(dev, start, blks, addr, + is_write); + } + start += blks; + blks = 0; + addr += ATA_SECT_SIZE * blks; + } + } while (blks != 0); + + return blkcnt; +} + +static int mv_ata_exec_ata_cmd_nondma(int port, + struct sata_fis_h2d *cfis, u8 *buffer, + u32 len, u32 iswrite) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + int i; + u16 *tp; + + debug("%s\n", __func__); + + out_le32(priv->regbase + PIO_SECTOR_COUNT, cfis->sector_count); + out_le32(priv->regbase + PIO_LBA_HI, cfis->lba_high); + out_le32(priv->regbase + PIO_LBA_MID, cfis->lba_mid); + out_le32(priv->regbase + PIO_LBA_LOW, cfis->lba_low); + out_le32(priv->regbase + PIO_ERR_FEATURES, cfis->features); + out_le32(priv->regbase + PIO_DEVICE, cfis->device); + out_le32(priv->regbase + PIO_CMD_STATUS, cfis->command); + + if (ata_wait_register((u32 *)(priv->regbase + PIO_CMD_STATUS), + ATA_BUSY, 0x0, 10000)) { + debug("Failed to wait for completion\n"); + return -1; + } + + if (len > 0) { + tp = (u16 *)buffer; + for (i = 0; i < len / 2; i++) { + if (iswrite) + out_le16(priv->regbase + PIO_DATA, *tp++); + else + *tp++ = in_le16(priv->regbase + PIO_DATA); + } + } + + return len; +} + +static int mv_sata_identify(int port, u16 *id) +{ + struct sata_fis_h2d h2d; + + memset(&h2d, 0, sizeof(struct sata_fis_h2d)); + + h2d.fis_type = SATA_FIS_TYPE_REGISTER_H2D; + h2d.command = ATA_CMD_ID_ATA; + + /* Give device time to get operational */ + mdelay(10); + + return mv_ata_exec_ata_cmd_nondma(port, &h2d, (u8 *)id, + ATA_ID_WORDS * 2, READ_CMD); +} + +static void mv_sata_xfer_mode(int port, u16 *id) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + + priv->pio = id[ATA_ID_PIO_MODES]; + priv->mwdma = id[ATA_ID_MWDMA_MODES]; + priv->udma = id[ATA_ID_UDMA_MODES]; + debug("pio %04x, mwdma %04x, udma %04x\n", priv->pio, priv->mwdma, + priv->udma); +} + +static void mv_sata_set_features(int port) +{ + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + struct sata_fis_h2d cfis; + u8 udma_cap; + + memset(&cfis, 0, sizeof(struct sata_fis_h2d)); + + cfis.fis_type = SATA_FIS_TYPE_REGISTER_H2D; + cfis.command = ATA_CMD_SET_FEATURES; + cfis.features = SETFEATURES_XFER; + + /* First check the device capablity */ + udma_cap = (u8) (priv->udma & 0xff); + + if (udma_cap == ATA_UDMA6) + cfis.sector_count = XFER_UDMA_6; + if (udma_cap == ATA_UDMA5) + cfis.sector_count = XFER_UDMA_5; + if (udma_cap == ATA_UDMA4) + cfis.sector_count = XFER_UDMA_4; + if (udma_cap == ATA_UDMA3) + cfis.sector_count = XFER_UDMA_3; + + mv_ata_exec_ata_cmd_nondma(port, &cfis, NULL, 0, READ_CMD); +} + +int mv_sata_spin_down(int dev) +{ + struct sata_fis_h2d cfis; + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[dev].priv; + + if (priv->link == 0) { + debug("No device on port: %d\n", dev); + return 1; + } + + memset(&cfis, 0, sizeof(struct sata_fis_h2d)); + + cfis.fis_type = SATA_FIS_TYPE_REGISTER_H2D; + cfis.command = ATA_CMD_STANDBY; + + return mv_ata_exec_ata_cmd_nondma(dev, &cfis, NULL, 0, READ_CMD); +} + +int mv_sata_spin_up(int dev) +{ + struct sata_fis_h2d cfis; + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[dev].priv; + + if (priv->link == 0) { + debug("No device on port: %d\n", dev); + return 1; + } + + memset(&cfis, 0, sizeof(struct sata_fis_h2d)); + + cfis.fis_type = SATA_FIS_TYPE_REGISTER_H2D; + cfis.command = ATA_CMD_IDLE; + + return mv_ata_exec_ata_cmd_nondma(dev, &cfis, NULL, 0, READ_CMD); +} + +ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer) +{ + return ata_low_level_rw(dev, blknr, blkcnt, buffer, READ_CMD); +} + +ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer) +{ + return ata_low_level_rw(dev, blknr, blkcnt, (void *)buffer, WRITE_CMD); +} + +/* + * Initialize SATA memory windows + */ +static void mvsata_ide_conf_mbus_windows(void) +{ + const struct mbus_dram_target_info *dram; + int i; + + dram = mvebu_mbus_dram_info(); + + /* Disable windows, Set Size/Base to 0 */ + for (i = 0; i < 4; i++) { + writel(0, MVSATA_WIN_CONTROL(i)); + writel(0, MVSATA_WIN_BASE(i)); + } + + for (i = 0; i < dram->num_cs; i++) { + const struct mbus_dram_window *cs = dram->cs + i; + writel(((cs->size - 1) & 0xffff0000) | (cs->mbus_attr << 8) | + (dram->mbus_dram_target_id << 4) | 1, + MVSATA_WIN_CONTROL(i)); + writel(cs->base & 0xffff0000, MVSATA_WIN_BASE(i)); + } +} + +int init_sata(int dev) +{ + struct mv_priv *priv; + + debug("Initialize sata dev: %d\n", dev); + + if (dev < 0 || dev >= CONFIG_SYS_SATA_MAX_DEVICE) { + printf("Invalid sata device %d\n", dev); + return -1; + } + + priv = (struct mv_priv *)malloc(sizeof(struct mv_priv)); + if (!priv) { + printf("Failed to allocate memory for private sata data\n"); + return -ENOMEM; + } + + memset((void *)priv, 0, sizeof(struct mv_priv)); + + /* Allocate and align request buffer */ + priv->crqb_alloc = malloc(sizeof(struct crqb) * REQUEST_QUEUE_SIZE + + CRQB_ALIGN); + if (!priv->crqb_alloc) { + printf("Unable to allocate memory for request queue\n"); + return -ENOMEM; + } + memset(priv->crqb_alloc, 0, + sizeof(struct crqb) * REQUEST_QUEUE_SIZE + CRQB_ALIGN); + priv->request = (struct crqb *)(((u32) priv->crqb_alloc + CRQB_ALIGN) & + ~(CRQB_ALIGN - 1)); + + /* Allocate and align response buffer */ + priv->crpb_alloc = malloc(sizeof(struct crpb) * REQUEST_QUEUE_SIZE + + CRPB_ALIGN); + if (!priv->crpb_alloc) { + printf("Unable to allocate memory for response queue\n"); + return -ENOMEM; + } + memset(priv->crpb_alloc, 0, + sizeof(struct crpb) * REQUEST_QUEUE_SIZE + CRPB_ALIGN); + priv->response = (struct crpb *)(((u32) priv->crpb_alloc + CRPB_ALIGN) & + ~(CRPB_ALIGN - 1)); + + sata_dev_desc[dev].priv = (void *)priv; + + sprintf(priv->name, "SATA%d", dev); + + priv->regbase = dev == 0 ? SATA0_BASE : SATA1_BASE; + + if (!hw_init) { + debug("Initialize sata hw\n"); + hw_init = 1; + mv_reset_one_hc(); + mvsata_ide_conf_mbus_windows(); + } + + mv_reset_port(dev); + + if (probe_port(dev)) { + priv->link = 0; + return -ENODEV; + } + priv->link = 1; + + return 0; +} + +int reset_sata(int dev) +{ + return 0; +} + +int scan_sata(int port) +{ + unsigned char serial[ATA_ID_SERNO_LEN + 1]; + unsigned char firmware[ATA_ID_FW_REV_LEN + 1]; + unsigned char product[ATA_ID_PROD_LEN + 1]; + u64 n_sectors; + u16 *id; + struct mv_priv *priv = (struct mv_priv *)sata_dev_desc[port].priv; + + if (!priv->link) + return -ENODEV; + + id = (u16 *)malloc(ATA_ID_WORDS * 2); + if (!id) { + printf("Failed to malloc id data\n"); + return -ENOMEM; + } + + mv_sata_identify(port, id); + ata_swap_buf_le16(id, ATA_ID_WORDS); +#ifdef DEBUG + ata_dump_id(id); +#endif + + /* Serial number */ + ata_id_c_string(id, serial, ATA_ID_SERNO, sizeof(serial)); + memcpy(sata_dev_desc[port].product, serial, sizeof(serial)); + + /* Firmware version */ + ata_id_c_string(id, firmware, ATA_ID_FW_REV, sizeof(firmware)); + memcpy(sata_dev_desc[port].revision, firmware, sizeof(firmware)); + + /* Product model */ + ata_id_c_string(id, product, ATA_ID_PROD, sizeof(product)); + memcpy(sata_dev_desc[port].vendor, product, sizeof(product)); + + /* Total sectors */ + n_sectors = ata_id_n_sectors(id); + sata_dev_desc[port].lba = n_sectors; + + /* Check if support LBA48 */ + if (ata_id_has_lba48(id)) { + sata_dev_desc[port].lba48 = 1; + debug("Device support LBA48\n"); + } + + /* Get the NCQ queue depth from device */ + priv->queue_depth = ata_id_queue_depth(id); + + /* Get the xfer mode from device */ + mv_sata_xfer_mode(port, id); + + /* Set the xfer mode to highest speed */ + mv_sata_set_features(port); + + /* Start up */ + mv_start_edma_engine(port); + + return 0; +} |