72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
|
/*
|
||
|
|
* Shared SH3 Setup code
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 Magnus Damm
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
||
|
|
* License. See the file "COPYING" in the main directory of this archive
|
||
|
|
* for more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/irq.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
|
||
|
|
/* All SH3 devices are equipped with IRQ0->5 (except sh7708) */
|
||
|
|
|
||
|
|
enum {
|
||
|
|
UNUSED = 0,
|
||
|
|
|
||
|
|
/* interrupt sources */
|
||
|
|
IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct intc_vect vectors_irq0123[] __initdata = {
|
||
|
|
INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
|
||
|
|
INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct intc_vect vectors_irq45[] __initdata = {
|
||
|
|
INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct intc_prio_reg prio_registers[] __initdata = {
|
||
|
|
{ 0xa4000016, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
|
||
|
|
{ 0xa4000018, 0, 16, 4, /* IPRD */ { 0, 0, IRQ5, IRQ4 } },
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct intc_mask_reg ack_registers[] __initdata = {
|
||
|
|
{ 0xa4000004, 0, 8, /* IRR0 */
|
||
|
|
{ 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct intc_sense_reg sense_registers[] __initdata = {
|
||
|
|
{ 0xa4000010, 16, 2, { 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
|
||
|
|
};
|
||
|
|
|
||
|
|
static DECLARE_INTC_DESC_ACK(intc_desc_irq0123, "sh3-irq0123",
|
||
|
|
vectors_irq0123, NULL, NULL,
|
||
|
|
prio_registers, sense_registers, ack_registers);
|
||
|
|
|
||
|
|
static DECLARE_INTC_DESC_ACK(intc_desc_irq45, "sh3-irq45",
|
||
|
|
vectors_irq45, NULL, NULL,
|
||
|
|
prio_registers, sense_registers, ack_registers);
|
||
|
|
|
||
|
|
#define INTC_ICR1 0xa4000010UL
|
||
|
|
#define INTC_ICR1_IRQLVL (1<<14)
|
||
|
|
|
||
|
|
void __init plat_irq_setup_pins(int mode)
|
||
|
|
{
|
||
|
|
if (mode == IRQ_MODE_IRQ) {
|
||
|
|
ctrl_outw(ctrl_inw(INTC_ICR1) & ~INTC_ICR1_IRQLVL, INTC_ICR1);
|
||
|
|
register_intc_controller(&intc_desc_irq0123);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
BUG();
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init plat_irq_setup_sh3(void)
|
||
|
|
{
|
||
|
|
register_intc_controller(&intc_desc_irq45);
|
||
|
|
}
|