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authorRob Herring <rob.herring@calxeda.com>2011-07-06 16:13:36 +0000
committerWolfgang Denk <wd@denx.de>2011-07-26 00:06:58 +0200
commit942e31437d2ba34acab259901b929532ba77390a (patch)
tree275f3be0420b80538edb2f794a9b52f50119bb20 /drivers/block
parente5a6c79d4299ca8367edb73656ad9e51765ccd66 (diff)
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scsi/ahci: add support for non-PCI controllers
Add support for AHCI controllers that are not PCI based. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Cc: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/ahci.c70
1 files changed, 62 insertions, 8 deletions
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index d431c5a..64f52bb 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -78,13 +78,15 @@ static int waiting_for_cmd_completed(volatile u8 *offset,
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;
cap_save = readl(mmio + HOST_CAP);
cap_save &= ((1 << 28) | (1 << 17));
@@ -110,6 +112,7 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent)
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) {
@@ -118,7 +121,7 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent)
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;
@@ -183,22 +186,24 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent)
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);
@@ -213,6 +218,9 @@ static void ahci_print_info(struct ahci_probe_ent *probe_ent)
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";
@@ -222,7 +230,7 @@ static void ahci_print_info(struct ahci_probe_ent *probe_ent)
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,
@@ -249,6 +257,7 @@ static void ahci_print_info(struct ahci_probe_ent *probe_ent)
cap & (1 << 13) ? "part " : "");
}
+#ifndef CONFIG_SCSI_AHCI_PLAT
static int ahci_init_one(pci_dev_t pdev)
{
u16 vendor;
@@ -291,7 +300,7 @@ static int ahci_init_one(pci_dev_t pdev)
err_out:
return rc;
}
-
+#endif
#define MAX_DATA_BYTE_COUNT (4*1024*1024)
@@ -667,7 +676,9 @@ void scsi_low_level_init(int busdevfunc)
int i;
u32 linkmap;
+#ifndef CONFIG_SCSI_AHCI_PLAT
ahci_init_one(busdevfunc);
+#endif
linkmap = probe_ent->link_port_map;
@@ -682,6 +693,49 @@ void scsi_low_level_init(int busdevfunc)
}
}
+#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)
{