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added code to support IPC for SDHC

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This commit is contained in:
bushing 2009-02-01 02:50:59 -08:00
parent bb5862f67c
commit 902d0adac0
4 changed files with 81 additions and 4 deletions
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4
ipc.c
View File

@ -7,6 +7,7 @@
#include "gecko.h"
#include "ipc.h"
#include "nand.h"
#include "sdhc.h"
#include "crypto.h"
static volatile ipc_request in_queue[IPC_IN_SIZE] ALIGNED(32) MEM2_BSS;
@ -96,6 +97,9 @@ static int process_slow(volatile ipc_request *req)
case IPC_DEV_NAND:
nand_ipc(req);
break;
case IPC_DEV_SD:
sd_ipc(req);
break;
case IPC_DEV_KEYS:
crypto_ipc(req);
break;

6
ipc.h
View File

@ -37,9 +37,9 @@
#define IPC_NAND_WRITE 0x0003
#define IPC_NAND_ERASE 0x0004
#define IPC_SD_RESET 0x0000
#define IPC_SD_GETSTATUS 0x0001
#define IPC_SD_GETSIZE 0x0002
#define IPC_SD_MOUNT 0x0000
#define IPC_SD_SELECT 0x0001
#define IPC_SD_GETSTATE 0x0002
#define IPC_SD_READ 0x0003
#define IPC_SD_WRITE 0x0004

69
sdhc.c
View File

@ -178,6 +178,22 @@
#define EINTERRUPT_ALL 0x3ff
static int ipc_code = 0;
static int ipc_tag = 0;
static sdhci_t sdhci;
// not currently used :(
void sd_irq(void)
{
int code, tag;
if (ipc_code != 0) {
code = ipc_code;
tag = ipc_tag;
ipc_code = ipc_tag = 0;
ipc_post(code, tag, 0);
}
}
u8 __sd_read8(u32 addr)
{
u32 mask;
@ -449,7 +465,7 @@ static int __sd_power(sdhci_t *sdhci, int vdd)
if(!(caps & vdd))
{
sdhc_error(sdhci->reg_base, "voltage %x not supported by the hc");
sdhc_error(sdhci->reg_base, "voltage %x not supported by the hc", vdd);
return SDHC_EINVAL;
}
@ -1046,3 +1062,54 @@ int sd_write(sdhci_t *sdhci, u32 start_block, u32 blk_cnt, const void *buffer)
}
#endif
void sd_initialize(void)
{
ipc_code = ipc_tag = 0;
sd_init(&sdhci, 0);
// irq_enable(IRQ_NAND); ??
}
void sd_ipc(volatile ipc_request *req)
{
int retval = 0;
if (ipc_code != 0 || ipc_tag != 0) {
gecko_printf("SDHC: previous IPC request is not done yet.");
ipc_post(req->code, req->tag, 1, -1);
return;
}
switch (req->req) {
case IPC_SD_MOUNT:
retval = sd_mount(&sdhci);
ipc_post(req->code, req->tag, 1, retval);
break;
case IPC_SD_SELECT:
retval = sd_select(&sdhci);
ipc_post(req->code, req->tag, 1, retval);
break;
case IPC_SD_GETSTATE:
retval = __sd_read32(sdhci.reg_base + SDHC_PRESENT_STATE);
ipc_post(req->code, req->tag, 1, retval);
break;
case IPC_SD_READ:
retval = sd_read(&sdhci, req->args[0], req->args[1],
(void *)req->args[2]);
ipc_post(req->code, req->tag, 1, retval);
break;
case IPC_SD_WRITE:
retval = sd_write(&sdhci, req->args[0], req->args[1],
(void *)req->args[2]);
ipc_post(req->code, req->tag, 1, retval);
break;
default:
gecko_printf("IPC: unknown SLOW NAND request %04x\n",
req->req);
}
}

6
sdhc.h
View File

@ -2,6 +2,7 @@
#define __SDHC_H__
#include "types.h"
#include "ipc.h"
#define SDHC_ENOCARD -0x1001
#define SDHC_ESTRANGE -0x1002
@ -33,6 +34,11 @@ int sd_select(sdhci_t *sdhci);
int sd_read(sdhci_t *sdhci, u32 start_block, u32 blk_cnt, void *buffer);
int sd_write(sdhci_t *sdhci, u32 start_block, u32 blk_cnt, const void *buffer);
void sd_irq(void);
void sd_initialize();
void sd_ipc(volatile ipc_request *req);
u8 __sd_read8(u32 addr);
u16 __sd_read16(u32 addr);
u32 __sd_read32(u32 addr);