[U-Boot] [PATCH v3] scsi/ahci: add support for non-PCI controllers
Rob Herring
robherring2 at gmail.com
Thu Jul 7 04:13:36 CEST 2011
From: Rob Herring <rob.herring at calxeda.com>
Add support for AHCI controllers that are not PCI based.
Signed-off-by: Rob Herring <rob.herring at calxeda.com>
Cc: Wolfgang Denk <wd at denx.de>
---
changes in v2:
- fix checkpatch.pl warnings/errors
- fix label indentation
- simplify "sizeof(hd_driveid_t *) * AHCI_MAX_PORTS" to "sizeof(ataid)"
- Add function prototypes for ahci_init and scsi_scan
changes in v3:
- Introduce CONFIG_SCSI_AHCI_PLAT and replace CONFIG_PCI with it in
ahci.c
- Make no SCSI_DEV_ID and SCSI_VEND_ID only okay if CONFIG_SCSI_AHCI_PLAT
is defined.
- fix checkpatch.pl warnings/errors (again...)
common/cmd_scsi.c | 5 ++-
drivers/block/ahci.c | 70 ++++++++++++++++++++++++++++++++++++++++++++-----
include/ahci.h | 4 +++
include/scsi.h | 1 +
4 files changed, 70 insertions(+), 10 deletions(-)
diff --git a/common/cmd_scsi.c b/common/cmd_scsi.c
index be4fe74..352781b 100644
--- a/common/cmd_scsi.c
+++ b/common/cmd_scsi.c
@@ -46,7 +46,7 @@
#define SCSI_VEND_ID 0x10b9
#define SCSI_DEV_ID 0x5288
-#else
+#elif !defined(CONFIG_SCSI_AHCI_PLAT)
#error no scsi device defined
#endif
@@ -174,7 +174,7 @@ removable:
scsi_curr_dev = -1;
}
-
+#ifdef CONFIG_PCI
void scsi_init(void)
{
int busdevfunc;
@@ -192,6 +192,7 @@ void scsi_init(void)
scsi_low_level_init(busdevfunc);
scsi_scan(1);
}
+#endif
block_dev_desc_t * scsi_get_dev(int dev)
{
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)
{
diff --git a/include/ahci.h b/include/ahci.h
index 0c6bbbd..465ea7f 100644
--- a/include/ahci.h
+++ b/include/ahci.h
@@ -25,6 +25,8 @@
#ifndef _AHCI_H_
#define _AHCI_H_
+#include <pci.h>
+
#define AHCI_PCI_BAR 0x24
#define AHCI_MAX_SG 56 /* hardware max is 64K */
#define AHCI_CMD_SLOT_SZ 32
@@ -187,4 +189,6 @@ struct ahci_probe_ent {
u32 link_port_map; /*linkup port map*/
};
+int ahci_init(u32 base);
+
#endif
diff --git a/include/scsi.h b/include/scsi.h
index aaafc9c..c52759c 100644
--- a/include/scsi.h
+++ b/include/scsi.h
@@ -185,6 +185,7 @@ void scsi_low_level_init(int busdevfunc);
* functions residing inside cmd_scsi.c
*/
void scsi_init(void);
+void scsi_scan(int mode);
#define SCSI_IDENTIFY 0xC0 /* not used */
--
1.7.4.1
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