u-boot-brain/drivers/ata/dwc_ahsata.c
Simon Glass caa4daa2ae dm: treewide: Rename 'platdata' variables to just 'plat'
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).

Rename some of the latter variables to end with 'plat' for consistency.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-12-13 16:51:08 -07:00

1108 lines
26 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
* Terry Lv <r65388@freescale.com>
*/
#include <common.h>
#include <ahci.h>
#include <blk.h>
#include <cpu_func.h>
#include <dm.h>
#include <dwc_ahsata.h>
#include <fis.h>
#include <libata.h>
#include <log.h>
#include <malloc.h>
#include <memalign.h>
#include <part.h>
#include <sata.h>
#include <asm/cache.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/sata.h>
#include <linux/bitops.h>
#include <linux/ctype.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include "dwc_ahsata_priv.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)
static inline void __iomem *ahci_port_base(void __iomem *base, u32 port)
{
return base + 0x100 + (port * 0x80);
}
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_uc_priv *uc_priv, int clk)
{
struct sata_host_regs *host_mmio = uc_priv->mmio_base;
writel(SATA_HOST_OOBR_WE, &host_mmio->oobr);
writel(0x02060b14, &host_mmio->oobr);
return 0;
}
static int ahci_host_init(struct ahci_uc_priv *uc_priv)
{
u32 tmp, cap_save, num_ports;
int i, j, timeout = 1000;
struct sata_port_regs *port_mmio = NULL;
struct sata_host_regs *host_mmio = uc_priv->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(uc_priv, 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.
*/
uc_priv->cap = readl(&host_mmio->cap);
uc_priv->port_map = readl(&host_mmio->pi);
/* Determine how many command slots the HBA supports */
uc_priv->n_ports = (uc_priv->cap & SATA_HOST_CAP_NP_MASK) + 1;
debug("cap 0x%x port_map 0x%x n_ports %d\n",
uc_priv->cap, uc_priv->port_map, uc_priv->n_ports);
for (i = 0; i < uc_priv->n_ports; i++) {
uc_priv->port[i].port_mmio = ahci_port_base(host_mmio, i);
port_mmio = uc_priv->port[i].port_mmio;
/* 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)
uc_priv->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_uc_priv *uc_priv)
{
struct sata_host_regs *host_mmio = uc_priv->mmio_base;
u32 vers, cap, impl, speed;
const char *speed_s;
const char *scc_s;
vers = readl(&host_mmio->vs);
cap = uc_priv->cap;
impl = uc_priv->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_fill_sg(struct ahci_uc_priv *uc_priv, u8 port,
unsigned char *buf, int buf_len)
{
struct ahci_ioports *pp = &uc_priv->port[port];
struct ahci_sg *ahci_sg = pp->cmd_tbl_sg;
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++) {
ahci_sg->addr =
cpu_to_le32((u32)buf + i * max_bytes);
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)
{
struct ahci_cmd_hdr *cmd_hdr = (struct ahci_cmd_hdr *)(pp->cmd_slot +
AHCI_CMD_SLOT_SZ * cmd_slot);
memset(cmd_hdr, 0, AHCI_CMD_SLOT_SZ);
cmd_hdr->opts = cpu_to_le32(opts);
cmd_hdr->status = 0;
pp->cmd_slot->tbl_addr = cpu_to_le32((u32)pp->cmd_tbl & 0xffffffff);
#ifdef CONFIG_PHYS_64BIT
pp->cmd_slot->tbl_addr_hi =
cpu_to_le32((u32)(((pp->cmd_tbl) >> 16) >> 16));
#endif
}
#define AHCI_GET_CMD_SLOT(c) ((c) ? ffs(c) : 0)
static int ahci_exec_ata_cmd(struct ahci_uc_priv *uc_priv, u8 port,
struct sata_fis_h2d *cfis, u8 *buf, u32 buf_len,
s32 is_write)
{
struct ahci_ioports *pp = &uc_priv->port[port];
struct sata_port_regs *port_mmio = 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(uc_priv, port, buf, buf_len);
opts = (sizeof(struct sata_fis_h2d) >> 2) | (sg_count << 16);
if (is_write) {
opts |= 0x40;
flush_cache((ulong)buf, buf_len);
}
ahci_fill_cmd_slot(pp, cmd_slot, opts);
flush_cache((int)(pp->cmd_slot), AHCI_PORT_PRIV_DMA_SZ);
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;
}
invalidate_dcache_range((int)(pp->cmd_slot),
(int)(pp->cmd_slot)+AHCI_PORT_PRIV_DMA_SZ);
debug("ahci_exec_ata_cmd: %d byte transferred.\n",
pp->cmd_slot->status);
if (!is_write)
invalidate_dcache_range((ulong)buf, (ulong)buf+buf_len);
return buf_len;
}
static void ahci_set_feature(struct ahci_uc_priv *uc_priv, u8 port)
{
struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
struct sata_fis_h2d *cfis = &h2d;
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(uc_priv->udma_mask + 1) + 0x3e;
ahci_exec_ata_cmd(uc_priv, port, cfis, NULL, 0, READ_CMD);
}
static int ahci_port_start(struct ahci_uc_priv *uc_priv, u8 port)
{
struct ahci_ioports *pp = &uc_priv->port[port];
struct sata_port_regs *port_mmio = 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) {
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
*/
pp->cmd_slot = (struct ahci_cmd_hdr *)mem;
debug("cmd_slot = 0x%x\n", (unsigned int) pp->cmd_slot);
mem += (AHCI_CMD_SLOT_SZ * DWC_AHSATA_MAX_CMD_SLOTS);
/*
* Second item: Received-FIS area, 256-Byte aligned
*/
pp->rx_fis = mem;
mem += AHCI_RX_FIS_SZ;
/*
* Third item: data area for storing a single command
* and its scatter-gather table
*/
pp->cmd_tbl = mem;
debug("cmd_tbl_dma = 0x%lx\n", pp->cmd_tbl);
mem += AHCI_CMD_TBL_HDR;
writel_with_flush(0x00004444, &port_mmio->dmacr);
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);
/* 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;
}
static void dwc_ahsata_print_info(struct blk_desc *pdev)
{
printf("SATA Device Info:\n\r");
printf("S/N: %s\n\rProduct model number: %s\n\r"
"Firmware version: %s\n\rCapacity: " LBAFU " sectors\n\r",
pdev->product, pdev->vendor, pdev->revision, pdev->lba);
}
static void dwc_ahsata_identify(struct ahci_uc_priv *uc_priv, u16 *id)
{
struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
struct sata_fis_h2d *cfis = &h2d;
u8 port = uc_priv->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(uc_priv, port, cfis, (u8 *)id, ATA_ID_WORDS * 2,
READ_CMD);
ata_swap_buf_le16(id, ATA_ID_WORDS);
}
static void dwc_ahsata_xfer_mode(struct ahci_uc_priv *uc_priv, u16 *id)
{
uc_priv->pio_mask = id[ATA_ID_PIO_MODES];
uc_priv->udma_mask = id[ATA_ID_UDMA_MODES];
debug("pio %04x, udma %04x\n\r", uc_priv->pio_mask, uc_priv->udma_mask);
}
static u32 dwc_ahsata_rw_cmd(struct ahci_uc_priv *uc_priv, u32 start,
u32 blkcnt, u8 *buffer, int is_write)
{
struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
struct sata_fis_h2d *cfis = &h2d;
u8 port = uc_priv->hard_port_no;
u32 block;
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);
if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
ATA_SECT_SIZE * blkcnt, is_write) > 0)
return blkcnt;
else
return 0;
}
static void dwc_ahsata_flush_cache(struct ahci_uc_priv *uc_priv)
{
struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
struct sata_fis_h2d *cfis = &h2d;
u8 port = uc_priv->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(uc_priv, port, cfis, NULL, 0, 0);
}
static u32 dwc_ahsata_rw_cmd_ext(struct ahci_uc_priv *uc_priv, u32 start,
lbaint_t blkcnt, u8 *buffer, int is_write)
{
struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
struct sata_fis_h2d *cfis = &h2d;
u8 port = uc_priv->hard_port_no;
u64 block;
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;
if (ahci_exec_ata_cmd(uc_priv, port, cfis, buffer,
ATA_SECT_SIZE * blkcnt, is_write) > 0)
return blkcnt;
else
return 0;
}
static void dwc_ahsata_flush_cache_ext(struct ahci_uc_priv *uc_priv)
{
struct sata_fis_h2d h2d __aligned(ARCH_DMA_MINALIGN);
struct sata_fis_h2d *cfis = &h2d;
u8 port = uc_priv->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(uc_priv, port, cfis, NULL, 0, 0);
}
static void dwc_ahsata_init_wcache(struct ahci_uc_priv *uc_priv, u16 *id)
{
if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
uc_priv->flags |= SATA_FLAG_WCACHE;
if (ata_id_has_flush(id))
uc_priv->flags |= SATA_FLAG_FLUSH;
if (ata_id_has_flush_ext(id))
uc_priv->flags |= SATA_FLAG_FLUSH_EXT;
}
static u32 ata_low_level_rw_lba48(struct ahci_uc_priv *uc_priv, u32 blknr,
lbaint_t blkcnt, const 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_LBA48;
do {
if (blks > max_blks) {
if (max_blks != dwc_ahsata_rw_cmd_ext(uc_priv, 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(uc_priv, start, blks,
addr, is_write))
return 0;
start += blks;
blks = 0;
addr += ATA_SECT_SIZE * blks;
}
} while (blks != 0);
return blkcnt;
}
static u32 ata_low_level_rw_lba28(struct ahci_uc_priv *uc_priv, u32 blknr,
lbaint_t blkcnt, const 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(uc_priv, 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(uc_priv, start, blks,
addr, is_write))
return 0;
start += blks;
blks = 0;
addr += ATA_SECT_SIZE * blks;
}
} while (blks != 0);
return blkcnt;
}
static int dwc_ahci_start_ports(struct ahci_uc_priv *uc_priv)
{
u32 linkmap;
int i;
linkmap = uc_priv->link_port_map;
if (0 == linkmap) {
printf("No port device detected!\n");
return -ENXIO;
}
for (i = 0; i < uc_priv->n_ports; i++) {
if ((linkmap >> i) && ((linkmap >> i) & 0x01)) {
if (ahci_port_start(uc_priv, (u8)i)) {
printf("Can not start port %d\n", i);
return 1;
}
uc_priv->hard_port_no = i;
break;
}
}
return 0;
}
static int dwc_ahsata_scan_common(struct ahci_uc_priv *uc_priv,
struct blk_desc *pdev)
{
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 };
u8 port = uc_priv->hard_port_no;
ALLOC_CACHE_ALIGN_BUFFER(u16, id, ATA_ID_WORDS);
/* Identify device to get information */
dwc_ahsata_identify(uc_priv, 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));
/* Total sectors */
pdev->lba = ata_id_n_sectors(id);
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 */
uc_priv->flags &= (~SATA_FLAG_Q_DEP_MASK);
uc_priv->flags |= ata_id_queue_depth(id);
/* Get the xfer mode from device */
dwc_ahsata_xfer_mode(uc_priv, id);
/* Get the write cache status from device */
dwc_ahsata_init_wcache(uc_priv, id);
/* Set the xfer mode to highest speed */
ahci_set_feature(uc_priv, port);
dwc_ahsata_print_info(pdev);
return 0;
}
/*
* SATA interface between low level driver and command layer
*/
static ulong sata_read_common(struct ahci_uc_priv *uc_priv,
struct blk_desc *desc, ulong blknr,
lbaint_t blkcnt, void *buffer)
{
u32 rc;
if (desc->lba48)
rc = ata_low_level_rw_lba48(uc_priv, blknr, blkcnt, buffer,
READ_CMD);
else
rc = ata_low_level_rw_lba28(uc_priv, blknr, blkcnt, buffer,
READ_CMD);
return rc;
}
static ulong sata_write_common(struct ahci_uc_priv *uc_priv,
struct blk_desc *desc, ulong blknr,
lbaint_t blkcnt, const void *buffer)
{
u32 rc;
u32 flags = uc_priv->flags;
if (desc->lba48) {
rc = ata_low_level_rw_lba48(uc_priv, blknr, blkcnt, buffer,
WRITE_CMD);
if ((flags & SATA_FLAG_WCACHE) && (flags & SATA_FLAG_FLUSH_EXT))
dwc_ahsata_flush_cache_ext(uc_priv);
} else {
rc = ata_low_level_rw_lba28(uc_priv, blknr, blkcnt, buffer,
WRITE_CMD);
if ((flags & SATA_FLAG_WCACHE) && (flags & SATA_FLAG_FLUSH))
dwc_ahsata_flush_cache(uc_priv);
}
return rc;
}
#if !CONFIG_IS_ENABLED(AHCI)
static int ahci_init_one(int pdev)
{
int rc;
struct ahci_uc_priv *uc_priv = NULL;
uc_priv = malloc(sizeof(struct ahci_uc_priv));
if (!uc_priv)
return -ENOMEM;
memset(uc_priv, 0, sizeof(struct ahci_uc_priv));
uc_priv->dev = pdev;
uc_priv->host_flags = ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
| ATA_FLAG_MMIO
| ATA_FLAG_PIO_DMA
| ATA_FLAG_NO_ATAPI;
uc_priv->mmio_base = (void __iomem *)CONFIG_DWC_AHSATA_BASE_ADDR;
/* initialize adapter */
rc = ahci_host_init(uc_priv);
if (rc)
goto err_out;
ahci_print_info(uc_priv);
/* Save the uc_private struct to block device struct */
sata_dev_desc[pdev].priv = uc_priv;
return 0;
err_out:
if (uc_priv)
free(uc_priv);
return rc;
}
int init_sata(int dev)
{
struct ahci_uc_priv *uc_priv = NULL;
#if defined(CONFIG_MX6)
if (!is_mx6dq() && !is_mx6dqp())
return 1;
#endif
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);
uc_priv = sata_dev_desc[dev].priv;
return dwc_ahci_start_ports(uc_priv) ? 1 : 0;
}
int reset_sata(int dev)
{
struct ahci_uc_priv *uc_priv;
struct sata_host_regs *host_mmio;
if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
printf("The sata index %d is out of ranges\n\r", dev);
return -1;
}
uc_priv = sata_dev_desc[dev].priv;
if (NULL == uc_priv)
/* not initialized, so nothing to reset */
return 0;
host_mmio = uc_priv->mmio_base;
setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR);
while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR)
udelay(100);
free(uc_priv);
memset(&sata_dev_desc[dev], 0, sizeof(struct blk_desc));
return 0;
}
int sata_port_status(int dev, int port)
{
struct sata_port_regs *port_mmio;
struct ahci_uc_priv *uc_priv = NULL;
if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1))
return -EINVAL;
if (sata_dev_desc[dev].priv == NULL)
return -ENODEV;
uc_priv = sata_dev_desc[dev].priv;
port_mmio = uc_priv->port[port].port_mmio;
return readl(&port_mmio->ssts) & SATA_PORT_SSTS_DET_MASK;
}
/*
* SATA interface between low level driver and command layer
*/
ulong sata_read(int dev, ulong blknr, lbaint_t blkcnt, void *buffer)
{
struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
return sata_read_common(uc_priv, &sata_dev_desc[dev], blknr, blkcnt,
buffer);
}
ulong sata_write(int dev, ulong blknr, lbaint_t blkcnt, const void *buffer)
{
struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
return sata_write_common(uc_priv, &sata_dev_desc[dev], blknr, blkcnt,
buffer);
}
int scan_sata(int dev)
{
struct ahci_uc_priv *uc_priv = sata_dev_desc[dev].priv;
struct blk_desc *pdev = &sata_dev_desc[dev];
return dwc_ahsata_scan_common(uc_priv, pdev);
}
#endif /* CONFIG_IS_ENABLED(AHCI) */
#if CONFIG_IS_ENABLED(AHCI)
int dwc_ahsata_port_status(struct udevice *dev, int port)
{
struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct sata_port_regs *port_mmio;
port_mmio = uc_priv->port[port].port_mmio;
return readl(&port_mmio->ssts) & SATA_PORT_SSTS_DET_MASK ? 0 : -ENXIO;
}
int dwc_ahsata_bus_reset(struct udevice *dev)
{
struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct sata_host_regs *host_mmio = uc_priv->mmio_base;
setbits_le32(&host_mmio->ghc, SATA_HOST_GHC_HR);
while (readl(&host_mmio->ghc) & SATA_HOST_GHC_HR)
udelay(100);
return 0;
}
int dwc_ahsata_scan(struct udevice *dev)
{
struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
struct blk_desc *desc;
struct udevice *blk;
int ret;
/*
* Create only one block device and do detection
* to make sure that there won't be a lot of
* block devices created
*/
device_find_first_child(dev, &blk);
if (!blk) {
ret = blk_create_devicef(dev, "dwc_ahsata_blk", "blk",
IF_TYPE_SATA, -1, 512, 0, &blk);
if (ret) {
debug("Can't create device\n");
return ret;
}
}
desc = dev_get_uclass_plat(blk);
ret = dwc_ahsata_scan_common(uc_priv, desc);
if (ret) {
debug("%s: Failed to scan bus\n", __func__);
return ret;
}
return 0;
}
int dwc_ahsata_probe(struct udevice *dev)
{
struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev);
int ret;
#if defined(CONFIG_MX6)
setup_sata();
#endif
uc_priv->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NO_ATAPI;
uc_priv->mmio_base = (void __iomem *)dev_read_addr(dev);
/* initialize adapter */
ret = ahci_host_init(uc_priv);
if (ret)
return ret;
ahci_print_info(uc_priv);
return dwc_ahci_start_ports(uc_priv);
}
static ulong dwc_ahsata_read(struct udevice *blk, lbaint_t blknr,
lbaint_t blkcnt, void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(blk);
struct udevice *dev = dev_get_parent(blk);
struct ahci_uc_priv *uc_priv;
uc_priv = dev_get_uclass_priv(dev);
return sata_read_common(uc_priv, desc, blknr, blkcnt, buffer);
}
static ulong dwc_ahsata_write(struct udevice *blk, lbaint_t blknr,
lbaint_t blkcnt, const void *buffer)
{
struct blk_desc *desc = dev_get_uclass_plat(blk);
struct udevice *dev = dev_get_parent(blk);
struct ahci_uc_priv *uc_priv;
uc_priv = dev_get_uclass_priv(dev);
return sata_write_common(uc_priv, desc, blknr, blkcnt, buffer);
}
static const struct blk_ops dwc_ahsata_blk_ops = {
.read = dwc_ahsata_read,
.write = dwc_ahsata_write,
};
U_BOOT_DRIVER(dwc_ahsata_blk) = {
.name = "dwc_ahsata_blk",
.id = UCLASS_BLK,
.ops = &dwc_ahsata_blk_ops,
};
#if CONFIG_IS_ENABLED(DWC_AHSATA_AHCI)
struct ahci_ops dwc_ahsata_ahci_ops = {
.port_status = dwc_ahsata_port_status,
.reset = dwc_ahsata_bus_reset,
.scan = dwc_ahsata_scan,
};
static const struct udevice_id dwc_ahsata_ahci_ids[] = {
{ .compatible = "fsl,imx6q-ahci" },
{ }
};
U_BOOT_DRIVER(dwc_ahsata_ahci) = {
.name = "dwc_ahsata_ahci",
.id = UCLASS_AHCI,
.of_match = dwc_ahsata_ahci_ids,
.ops = &dwc_ahsata_ahci_ops,
.probe = dwc_ahsata_probe,
};
#endif
#endif