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rt-thread-official/bsp/loongson/ls2kdev/drivers/ata/dwc_ahsata.c

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/*
* Copyright (c) 2006-2020, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-08-19 lizhirui porting to ls2k
*/
#include <rtthread.h>
#include <rtdef.h>
#include <mips_addrspace.h>
#include <ata_interface.h>
#include <ahci.h>
#include <dwc_ahsata.h>
#include <fis.h>
#include <libata.h>
#include <ata_debug.h>
#include <blk_device.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;
}
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;
//prepare to enable staggered spin-up
cap_save = readl(&host_mmio->cap);
cap_save |= SATA_HOST_CAP_SSS;
/* global controller reset */
tmp = readl(&host_mmio->ghc);
//ahsata controller reset
if ((tmp & SATA_HOST_GHC_HR) == 0)
{
writel_with_flush(tmp | SATA_HOST_GHC_HR, &host_mmio->ghc);
}
//wait for reset finishing
while ((readl(&host_mmio->ghc) & SATA_HOST_GHC_HR) && --timeout)
;
//reset timeout
if (timeout <= 0)
{
debug("controller reset failed (0x%x)\n", tmp);
return -1;
}
/* Set timer 1ms @ 100MHz*/
writel(100000000 / 1000, &host_mmio->timer1ms);
ahci_setup_oobr(uc_priv, 0);
//enable ahci
writel_with_flush(SATA_HOST_GHC_AE, &host_mmio->ghc);
//enable staggered spin-up
writel(cap_save, &host_mmio->cap);
//get sata port number
num_ports = (cap_save & SATA_HOST_CAP_NP_MASK) + 1;
//initialize pi register to set correct port number
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);
//Interrupt Enable
writel(tmp | SATA_HOST_GHC_IE, &host_mmio->ghc);
tmp = readl(&host_mmio->ghc);
debug("GHC 0x%x\n", tmp);
return 0;
}
int rt_hw_ahci_host_init()
{
struct ahci_uc_priv *ahci_device;
ahci_device = (struct ahci_uc_priv *)rt_device_create(RT_Device_Class_Miscellaneous, sizeof(struct ahci_uc_priv) - sizeof(struct rt_device));
ahci_device->mmio_base = (void *)DWCAHSATA_BASE;
ahci_device->parent.init = NULL;
ahci_device->parent.open = NULL;
ahci_device->parent.close = NULL;
ahci_device->parent.read = NULL;
ahci_device->parent.write = NULL;
ahci_device->parent.control = NULL;
if (rt_device_register((rt_device_t)ahci_device, "dwc_ahsata_ahci", 0) != RT_EOK)
{
rt_kprintf("dwc_ahsata_ahci device register failed!\n");
return -RT_ERROR;
}
if (dwc_ahsata_probe((rt_device_t)ahci_device) != 0)
{
rt_kprintf("ahci probe failed!\n");
return -RT_ERROR;
}
if (dwc_ahsata_scan((rt_device_t)ahci_device) != 0)
{
rt_kprintf("ahci host sata device scan failed!\n");
return -RT_ERROR;
}
return RT_EOK;
}
INIT_COMPONENT_EXPORT(rt_hw_ahci_host_init);
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";
rt_kprintf("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);
rt_kprintf("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 " : "");
rt_kprintf("version = %08x\n", ((struct sata_host_regs *)(uc_priv->mmio_base))->versionr);
}
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)
{
rt_kprintf("Error:Too much sg!\n");
return -1;
}
for (i = 0; i < sg_count; i++)
{
ahci_sg->addr = VADDR_TO_PHY(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 = VADDR_TO_PHY(pp->cmd_tbl);
/*#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)
{
rt_kprintf("Can't find empty command slot!\n");
return 0;
}
/* Check xfer length */
if (buf_len > MAX_BYTES_PER_TRANS)
{
rt_kprintf("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))
{
rt_kprintf("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;
u64 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)
{
rt_kprintf("No Link on this port!\n");
return -1;
}
mem = (u64)malloc(AHCI_PORT_PRIV_DMA_SZ + 1024);
if (!mem)
{
rt_kprintf("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%p\n", 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(LOW_PHY(pp->cmd_slot), &port_mmio->clb);
writel_with_flush(HIGH_PHY(pp->cmd_slot), &port_mmio->clbu);
writel_with_flush(LOW_PHY(pp->rx_fis), &port_mmio->fb);
writel_with_flush(HIGH_PHY(pp->rx_fis), &port_mmio->fbu);
/* 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_device *pdev)
{
rt_kprintf("SATA Device Info:\n\r");
rt_kprintf("S/N: %s\n\rProduct model number: %s\n\r"
"Firmware version: %s\n\rCapacity: %lu 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)
{
rt_kprintf("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))
{
rt_kprintf("Can not start port %d\n", i);
return 1;
}
uc_priv->hard_port_no = i;
break;
}
}
return 0;
}
unsigned char sector_data[512];
void dump_pbuf(void *p, int len)
{
rt_kprintf("----dump_pbuf----\n");
rt_kprintf("pbuf = 0x%p,len = %d\n", p, len);
u32 i;
u8 *q = p;
rt_kprintf("%p", q);
for (i = 0; i < 16; i++)
{
rt_kprintf(" %02x", i);
}
rt_kprintf("\n");
for (i = 0; i < len; i++)
{
if (!(i & 0xF))
{
rt_kprintf("%p", &q[i]);
}
rt_kprintf(" %02x", q[i]);
if ((i & 0xF) == 0xF)
{
rt_kprintf("\n");
}
}
rt_kprintf("\n-----------------\n");
}
static int dwc_ahsata_scan_common(struct ahci_uc_priv *uc_priv,
struct blk_device *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_read((rt_device_t)pdev, 0, sector_data, 1);
//dump_pbuf(sector_data, 512);
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_device *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_device *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))
{
rt_kprintf("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))
{
rt_kprintf("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 rt_device *dev, int port)
{
struct ahci_uc_priv *uc_priv = (struct ahci_uc_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 rt_device *dev)
{
struct ahci_uc_priv *uc_priv = (struct ahci_uc_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 rt_device *dev)
{
struct ahci_uc_priv *uc_priv = (struct ahci_uc_priv *)dev;
struct blk_device *blk;
rt_err_t ret;
blk = (struct blk_device *)rt_device_create(RT_Device_Class_Block, sizeof(struct blk_device) - sizeof(struct rt_device));
blk->parent.init = NULL;
blk->parent.open = NULL;
blk->parent.close = NULL;
blk->parent.control = dwc_ahsata_control;
blk->parent.read = dwc_ahsata_read;
blk->parent.write = dwc_ahsata_write;
blk->ahci_device = uc_priv;
blk->blksz = 512;
blk->log2blksz = 9;
blk->lba = 0;
ret = rt_device_register((rt_device_t)blk, "dwc_ahsata_blk", RT_DEVICE_FLAG_RDWR);
if (ret != RT_EOK)
{
debug("Can't create device\n");
return ret;
}
ret = dwc_ahsata_scan_common(uc_priv, blk);
if (ret)
{
debug("%s: Failed to scan bus\n", __func__);
return ret;
}
return 0;
}
int dwc_ahsata_probe(struct rt_device *dev)
{
struct ahci_uc_priv *uc_priv = (struct ahci_uc_priv *)dev;
int ret;
uc_priv->host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA | ATA_FLAG_NO_ATAPI;
/* initialize adapter */
ret = ahci_host_init(uc_priv);
if (ret)
return ret;
ahci_print_info(uc_priv);
return dwc_ahci_start_ports(uc_priv);
}
rt_size_t dwc_ahsata_read(rt_device_t dev, rt_off_t pos, void *buffer, rt_size_t size)
{
struct blk_device *blk = (struct blk_device *)dev;
return sata_read_common(blk->ahci_device, blk, pos, size, buffer);
}
rt_size_t dwc_ahsata_write(rt_device_t dev, rt_off_t pos, const void *buffer, rt_size_t size)
{
struct blk_device *blk = (struct blk_device *)dev;
return sata_write_common(blk->ahci_device, blk, pos, size, buffer);
}
rt_err_t dwc_ahsata_control(rt_device_t dev, int cmd, void *args)
{
struct blk_device *blk = (struct blk_device *)dev;
switch (cmd)
{
case RT_DEVICE_CTRL_BLK_GETGEOME:
if (args != NULL)
{
struct rt_device_blk_geometry *info = (struct rt_device_blk_geometry *)args;
info->sector_count = blk->lba;
info->bytes_per_sector = blk->blksz;
info->block_size = 0;
}
break;
}
return RT_EOK;
}
#endif
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