/*
- * Copyright (C) Freescale Semiconductor, Inc. 2006. All rights reserved.
+ * Copyright (C) Freescale Semiconductor, Inc. 2006.
* Author: Jason Jin<Jason.jin@freescale.com>
* Zhang Wei<wei.zhang@freescale.com>
*
*/
#include <common.h>
-#ifdef CONFIG_SCSI_AHCI
-
#include <command.h>
#include <pci.h>
#include <asm/processor.h>
#define writel_with_flush(a,b) do { writel(a,b); readl(b); } while (0)
+/*
+ * Some controllers limit number of blocks they can read at once. Contemporary
+ * SSD devices work much faster if the read size is aligned to a power of 2.
+ * Let's set default to 128 and allowing to be overwritten if needed.
+ */
+#ifndef MAX_SATA_BLOCKS_READ
+#define MAX_SATA_BLOCKS_READ 0x80
+#endif
static inline u32 ahci_port_base(u32 base, u32 port)
{
static int ahci_host_init(struct ahci_probe_ent *probe_ent)
{
+#ifndef CONFIG_SCSI_AHCI_PLAT
pci_dev_t pdev = probe_ent->dev;
+ u16 tmp16;
+ unsigned short vendor;
+#endif
volatile u8 *mmio = (volatile u8 *)probe_ent->mmio_base;
u32 tmp, cap_save;
- u16 tmp16;
int i, j;
volatile u8 *port_mmio;
- unsigned short vendor;
+
+ debug("ahci_host_init: start\n");
cap_save = readl(mmio + HOST_CAP);
cap_save &= ((1 << 28) | (1 << 17));
writel(cap_save, mmio + HOST_CAP);
writel_with_flush(0xf, mmio + HOST_PORTS_IMPL);
+#ifndef CONFIG_SCSI_AHCI_PLAT
pci_read_config_word(pdev, PCI_VENDOR_ID, &vendor);
if (vendor == PCI_VENDOR_ID_INTEL) {
tmp16 |= 0xf;
pci_write_config_word(pdev, 0x92, tmp16);
}
-
+#endif
probe_ent->cap = readl(mmio + HOST_CAP);
probe_ent->port_map = readl(mmio + HOST_PORTS_IMPL);
probe_ent->n_ports = (probe_ent->cap & 0x1f) + 1;
debug("cap 0x%x port_map 0x%x n_ports %d\n",
probe_ent->cap, probe_ent->port_map, probe_ent->n_ports);
+ if (probe_ent->n_ports > CONFIG_SYS_SCSI_MAX_SCSI_ID)
+ probe_ent->n_ports = CONFIG_SYS_SCSI_MAX_SCSI_ID;
+
for (i = 0; i < probe_ent->n_ports; i++) {
probe_ent->port[i].port_mmio = ahci_port_base((u32) mmio, i);
port_mmio = (u8 *) probe_ent->port[i].port_mmio;
writel(tmp | HOST_IRQ_EN, mmio + HOST_CTL);
tmp = readl(mmio + HOST_CTL);
debug("HOST_CTL 0x%x\n", tmp);
-
+#ifndef CONFIG_SCSI_AHCI_PLAT
pci_read_config_word(pdev, PCI_COMMAND, &tmp16);
tmp |= PCI_COMMAND_MASTER;
pci_write_config_word(pdev, PCI_COMMAND, tmp16);
-
+#endif
return 0;
}
static void ahci_print_info(struct ahci_probe_ent *probe_ent)
{
+#ifndef CONFIG_SCSI_AHCI_PLAT
pci_dev_t pdev = probe_ent->dev;
+ u16 cc;
+#endif
volatile u8 *mmio = (volatile u8 *)probe_ent->mmio_base;
u32 vers, cap, impl, speed;
const char *speed_s;
- u16 cc;
const char *scc_s;
vers = readl(mmio + HOST_VERSION);
else
speed_s = "?";
+#ifdef CONFIG_SCSI_AHCI_PLAT
+ scc_s = "SATA";
+#else
pci_read_config_word(pdev, 0x0a, &cc);
if (cc == 0x0101)
scc_s = "IDE";
scc_s = "RAID";
else
scc_s = "unknown";
-
+#endif
printf("AHCI %02x%02x.%02x%02x "
"%u slots %u ports %s Gbps 0x%x impl %s mode\n",
(vers >> 24) & 0xff,
cap & (1 << 13) ? "part " : "");
}
+#ifndef CONFIG_SCSI_AHCI_PLAT
static int ahci_init_one(pci_dev_t pdev)
{
- u32 iobase;
u16 vendor;
int rc;
memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
probe_ent->dev = pdev;
- pci_read_config_dword(pdev, AHCI_PCI_BAR, &iobase);
- iobase &= ~0xf;
-
probe_ent->host_flags = ATA_FLAG_SATA
| ATA_FLAG_NO_LEGACY
| ATA_FLAG_MMIO
probe_ent->pio_mask = 0x1f;
probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
- probe_ent->mmio_base = iobase;
+ pci_read_config_dword(pdev, PCI_BASE_ADDRESS_5, &probe_ent->mmio_base);
+ debug("ahci mmio_base=0x%08x\n", probe_ent->mmio_base);
/* Take from kernel:
* JMicron-specific fixup:
err_out:
return rc;
}
-
+#endif
#define MAX_DATA_BYTE_COUNT (4*1024*1024)
* 32 bytes each in size
*/
pp->cmd_slot = (struct ahci_cmd_hdr *)mem;
- debug("cmd_slot = 0x%x\n", pp->cmd_slot);
+ debug("cmd_slot = 0x%x\n", (unsigned)pp->cmd_slot);
mem += (AHCI_CMD_SLOT_SZ + 224);
/*
{
int i;
for (i = 0; i < len / 2; i++)
- target[i] = le16_to_cpu(src[i]);
+ target[i] = swab16(src[i]);
return (char *)target;
}
*/
static int ata_scsiop_read10(ccb * pccb)
{
- u64 lba = 0;
- u32 len = 0;
+ u32 lba = 0;
+ u16 blocks = 0;
u8 fis[20];
+ u8 *user_buffer = pccb->pdata;
+ u32 user_buffer_size = pccb->datalen;
- lba = (((u64) pccb->cmd[2]) << 24) | (((u64) pccb->cmd[3]) << 16)
- | (((u64) pccb->cmd[4]) << 8) | ((u64) pccb->cmd[5]);
- len = (((u32) pccb->cmd[7]) << 8) | ((u32) pccb->cmd[8]);
+ /* Retrieve the base LBA number from the ccb structure. */
+ memcpy(&lba, pccb->cmd + 2, sizeof(lba));
+ lba = be32_to_cpu(lba);
- /* For 10-byte and 16-byte SCSI R/W commands, transfer
+ /*
+ * And the number of blocks.
+ *
+ * For 10-byte and 16-byte SCSI R/W commands, transfer
* length 0 means transfer 0 block of data.
* However, for ATA R/W commands, sector count 0 means
* 256 or 65536 sectors, not 0 sectors as in SCSI.
*
* WARNING: one or two older ATA drives treat 0 as 0...
*/
- if (!len)
- return 0;
+ blocks = (((u16)pccb->cmd[7]) << 8) | ((u16) pccb->cmd[8]);
+
+ debug("scsi_ahci: read %d blocks starting from lba 0x%x\n",
+ (unsigned)lba, blocks);
+
+ /* Preset the FIS */
memset(fis, 0, 20);
+ fis[0] = 0x27; /* Host to device FIS. */
+ fis[1] = 1 << 7; /* Command FIS. */
+ fis[2] = ATA_CMD_RD_DMA; /* Command byte. */
- /* Construct the FIS */
- fis[0] = 0x27; /* Host to device FIS. */
- fis[1] = 1 << 7; /* Command FIS. */
- fis[2] = ATA_CMD_RD_DMA; /* Command byte. */
-
- /* LBA address, only support LBA28 in this driver */
- fis[4] = pccb->cmd[5];
- fis[5] = pccb->cmd[4];
- fis[6] = pccb->cmd[3];
- fis[7] = (pccb->cmd[2] & 0x0f) | 0xe0;
-
- /* Sector Count */
- fis[12] = pccb->cmd[8];
- fis[13] = pccb->cmd[7];
-
- /* Read from ahci */
- if (get_ahci_device_data(pccb->target, (u8 *) & fis, 20,
- pccb->pdata, pccb->datalen)) {
- debug("scsi_ahci: SCSI READ10 command failure.\n");
- return -EIO;
+ while (blocks) {
+ u16 now_blocks; /* number of blocks per iteration */
+ u32 transfer_size; /* number of bytes per iteration */
+
+ now_blocks = min(MAX_SATA_BLOCKS_READ, blocks);
+
+ transfer_size = ATA_BLOCKSIZE * now_blocks;
+ if (transfer_size > user_buffer_size) {
+ printf("scsi_ahci: Error: buffer too small.\n");
+ return -EIO;
+ }
+
+ /* LBA address, only support LBA28 in this driver */
+ fis[4] = (lba >> 0) & 0xff;
+ fis[5] = (lba >> 8) & 0xff;
+ fis[6] = (lba >> 16) & 0xff;
+ fis[7] = ((lba >> 24) & 0xf) | 0xe0;
+
+ /* Block (sector) count */
+ fis[12] = (now_blocks >> 0) & 0xff;
+ fis[13] = (now_blocks >> 8) & 0xff;
+
+ /* Read from ahci */
+ if (get_ahci_device_data(pccb->target, (u8 *) &fis, sizeof(fis),
+ user_buffer, user_buffer_size)) {
+ debug("scsi_ahci: SCSI READ10 command failure.\n");
+ return -EIO;
+ }
+ user_buffer += transfer_size;
+ user_buffer_size -= transfer_size;
+ blocks -= now_blocks;
+ lba += now_blocks;
}
return 0;
*/
static int ata_scsiop_read_capacity10(ccb *pccb)
{
- u8 buf[8];
+ u32 cap;
if (!ataid[pccb->target]) {
printf("scsi_ahci: SCSI READ CAPACITY10 command failure. "
return -EPERM;
}
- memset(buf, 0, 8);
-
- *(u32 *) buf = le32_to_cpu(ataid[pccb->target]->lba_capacity);
+ cap = be32_to_cpu(ataid[pccb->target]->lba_capacity);
+ memcpy(pccb->pdata, &cap, sizeof(cap));
- buf[6] = 512 >> 8;
- buf[7] = 512 & 0xff;
-
- memcpy(pccb->pdata, buf, 8);
+ pccb->pdata[4] = pccb->pdata[5] = 0;
+ pccb->pdata[6] = 512 >> 8;
+ pccb->pdata[7] = 512 & 0xff;
return 0;
}
int i;
u32 linkmap;
+#ifndef CONFIG_SCSI_AHCI_PLAT
ahci_init_one(busdevfunc);
+#endif
linkmap = probe_ent->link_port_map;
- for (i = 0; i < CFG_SCSI_MAX_SCSI_ID; i++) {
+ for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
if (((linkmap >> i) & 0x01)) {
if (ahci_port_start((u8) i)) {
printf("Can not start port %d\n", i);
}
}
+#ifdef CONFIG_SCSI_AHCI_PLAT
+int ahci_init(u32 base)
+{
+ int i, rc = 0;
+ u32 linkmap;
+
+ memset(ataid, 0, sizeof(ataid));
+
+ probe_ent = malloc(sizeof(struct ahci_probe_ent));
+ memset(probe_ent, 0, sizeof(struct ahci_probe_ent));
+
+ probe_ent->host_flags = ATA_FLAG_SATA
+ | ATA_FLAG_NO_LEGACY
+ | ATA_FLAG_MMIO
+ | ATA_FLAG_PIO_DMA
+ | ATA_FLAG_NO_ATAPI;
+ probe_ent->pio_mask = 0x1f;
+ probe_ent->udma_mask = 0x7f; /*Fixme,assume to support UDMA6 */
+
+ probe_ent->mmio_base = base;
+
+ /* initialize adapter */
+ rc = ahci_host_init(probe_ent);
+ if (rc)
+ goto err_out;
+
+ ahci_print_info(probe_ent);
+
+ linkmap = probe_ent->link_port_map;
+
+ for (i = 0; i < CONFIG_SYS_SCSI_MAX_SCSI_ID; i++) {
+ if (((linkmap >> i) & 0x01)) {
+ if (ahci_port_start((u8) i)) {
+ printf("Can not start port %d\n", i);
+ continue;
+ }
+ ahci_set_feature((u8) i);
+ }
+ }
+err_out:
+ return rc;
+}
+#endif
void scsi_bus_reset(void)
{
{
/*The ahci error info can be read in the ahci driver*/
}
-#endif
projects / karo-tx-uboot.git / blobdiff