mini/irq.c
2009-05-15 05:28:14 -07:00

90 lines
1.9 KiB
C

#include "irq.h"
#include "hollywood.h"
#include "gecko.h"
#include "utils.h"
#include "ipc.h"
#include "crypto.h"
void irq_setup_stack(void);
void irq_initialize(void)
{
irq_setup_stack();
write32(HW_IRQENABLE, 0);
write32(HW_IRQFLAG, 0xffffffff);
irq_restore(CPSR_FIQDIS);
//???
write32(HW_IRQENABLE+0x04, 0);
write32(HW_IRQENABLE+0x20, 0);
}
void irq_shutdown(void)
{
write32(HW_IRQENABLE, 0);
write32(HW_IRQFLAG, 0xffffffff);
irq_kill();
}
void irq_handler(void)
{
u32 enabled = read32(HW_IRQENABLE);
u32 flags = read32(HW_IRQFLAG);
//gecko_printf("In IRQ handler: 0x%08x 0x%08x 0x%08x\n", enabled, flags, flags & enabled);
flags = flags & enabled;
if(flags & IRQF_TIMER) {
gecko_printf("IRQ: timer\n");
gecko_printf("Timer: %08x\n", read32(HW_TIMER));
gecko_printf("Alarm: %08x\n", read32(HW_ALARM));
write32(HW_ALARM, 0); // shut it up
write32(HW_IRQFLAG, IRQF_TIMER);
}
if(flags & IRQF_NAND) {
gecko_printf("IRQ: NAND\n");
write32(NAND_CMD, 0x7fffffff); // shut it up
write32(HW_IRQFLAG, IRQF_NAND);
nand_irq();
}
if(flags & IRQF_GPIO1B) {
gecko_printf("IRQ: GPIO1B\n");
write32(HW_GPIO1BINTFLAG, 0xFFFFFF); // shut it up
write32(HW_IRQFLAG, IRQF_GPIO1B);
}
if(flags & IRQF_GPIO1) {
gecko_printf("IRQ: GPIO1\n");
write32(HW_GPIO1INTFLAG, 0xFFFFFF); // shut it up
write32(HW_IRQFLAG, IRQF_GPIO1);
}
if(flags & IRQF_RESET) {
gecko_printf("IRQ: RESET\n");
write32(HW_IRQFLAG, IRQF_RESET);
}
if(flags & IRQF_IPC) {
//gecko_printf("IRQ: IPC\n");
ipc_irq();
write32(HW_IRQFLAG, IRQF_IPC);
}
if(flags & IRQF_AES) {
gecko_printf("IRQ: AES\n");
write32(HW_IRQFLAG, IRQF_AES);
}
flags &= ~IRQF_ALL;
if(flags) {
gecko_printf("IRQ: unknown 0x%08x\n", flags);
write32(HW_IRQFLAG, flags);
}
}
void irq_enable(u32 irq)
{
set32(HW_IRQENABLE, 1<<irq);
}
void irq_disable(u32 irq)
{
clear32(HW_IRQENABLE, 1<<irq);
}