Commit 863b1719 authored by Magnus Damm's avatar Magnus Damm Committed by Paul Mundt

ARM: mach-shmobile: Run-time IRQ handler for INTCA

Break-out INTC specific IRQ demux code from the file
entry-macro-intc.S and register during run-time.

Covers sh7367, sh7377 and sh7372.
Signed-off-by: default avatarMagnus Damm <damm@opensource.se>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 60f1435c
......@@ -18,6 +18,11 @@ pfc-$(CONFIG_ARCH_SH7377) += pfc-sh7377.o
pfc-$(CONFIG_ARCH_SH7372) += pfc-sh7372.o
pfc-$(CONFIG_ARCH_SH73A0) += pfc-sh73a0.o
# IRQ objects
obj-$(CONFIG_ARCH_SH7367) += entry-intc.o
obj-$(CONFIG_ARCH_SH7377) += entry-intc.o
obj-$(CONFIG_ARCH_SH7372) += entry-intc.o
# Board objects
obj-$(CONFIG_MACH_G3EVM) += board-g3evm.o
obj-$(CONFIG_MACH_G4EVM) += board-g4evm.o
......
......@@ -1361,6 +1361,7 @@ static struct sys_timer ap4evb_timer = {
MACHINE_START(AP4EVB, "ap4evb")
.map_io = ap4evb_map_io,
.init_irq = sh7372_init_irq,
.handle_irq = shmobile_handle_irq_intc,
.init_machine = ap4evb_init,
.timer = &ap4evb_timer,
MACHINE_END
......@@ -367,6 +367,7 @@ static struct sys_timer g3evm_timer = {
MACHINE_START(G3EVM, "g3evm")
.map_io = g3evm_map_io,
.init_irq = sh7367_init_irq,
.handle_irq = shmobile_handle_irq_intc,
.init_machine = g3evm_init,
.timer = &g3evm_timer,
MACHINE_END
......@@ -394,6 +394,7 @@ static struct sys_timer g4evm_timer = {
MACHINE_START(G4EVM, "g4evm")
.map_io = g4evm_map_io,
.init_irq = sh7377_init_irq,
.handle_irq = shmobile_handle_irq_intc,
.init_machine = g4evm_init,
.timer = &g4evm_timer,
MACHINE_END
......@@ -1194,6 +1194,7 @@ static struct sys_timer mackerel_timer = {
MACHINE_START(MACKEREL, "mackerel")
.map_io = mackerel_map_io,
.init_irq = sh7372_init_irq,
.handle_irq = shmobile_handle_irq_intc,
.init_machine = mackerel_init,
.timer = &mackerel_timer,
MACHINE_END
/*
* ARM Interrupt demux handler using INTC
*
* Copyright (C) 2010 Magnus Damm
* Copyright (C) 2008 Renesas Solutions Corp.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <asm/entry-macro-multi.S>
#define INTCA_BASE 0xe6980000
#define INTFLGA_OFFS 0x00000018 /* accept pending interrupt */
#define INTEVTA_OFFS 0x00000020 /* vector number of accepted interrupt */
#define INTLVLA_OFFS 0x00000030 /* priority level of accepted interrupt */
#define INTLVLB_OFFS 0x00000034 /* previous priority level */
.macro get_irqnr_preamble, base, tmp
ldr \base, =INTCA_BASE
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
/* The single INTFLGA read access below results in the following:
*
* 1. INTLVLB is updated with old priority value from INTLVLA
* 2. Highest priority interrupt is accepted
* 3. INTLVLA is updated to contain priority of accepted interrupt
* 4. Accepted interrupt vector is stored in INTFLGA and INTEVTA
*/
ldr \irqnr, [\base, #INTFLGA_OFFS]
/* Restore INTLVLA with the value saved in INTLVLB.
* This is required to support interrupt priorities properly.
*/
ldrb \tmp, [\base, #INTLVLB_OFFS]
strb \tmp, [\base, #INTLVLA_OFFS]
/* Handle invalid vector number case */
cmp \irqnr, #0
beq 1000f
/* Convert vector to irq number, same as the evt2irq() macro */
lsr \irqnr, \irqnr, #0x5
subs \irqnr, \irqnr, #16
1000:
.endm
.macro test_for_ipi, irqnr, irqstat, base, tmp
.endm
.macro test_for_ltirq, irqnr, irqstat, base, tmp
.endm
arch_irq_handler shmobile_handle_irq_intc
......@@ -5,6 +5,7 @@ extern struct sys_timer shmobile_timer;
extern void shmobile_setup_console(void);
struct clk;
extern int clk_init(void);
extern void shmobile_handle_irq_intc(struct pt_regs *);
extern void sh7367_init_irq(void);
extern void sh7367_add_early_devices(void);
......
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