68abdbbb03
This patch reworks the ipr code by grouping the offset array together with the ipr_data structure in a new data structure called ipr_desc. This new structure also contains the name of the controller in struct irq_chip. The idea behind putting struct irq_chip in there is that we can use offsetof() to locate the base addresses in the irq_chip callbacks. This strategy has much in common with the recently merged intc2 code. One logic change has been made - the original ipr code enabled the interrupts by default but with this patch they are all disabled by default. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
/*
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* linux/arch/sh/boards/snapgear/setup.c
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*
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* Copyright (C) 2002 David McCullough <davidm@snapgear.com>
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* Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org>
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*
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* Based on files with the following comments:
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*
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* Copyright (C) 2000 Kazumoto Kojima
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*
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* Modified for 7751 Solution Engine by
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* Ian da Silva and Jeremy Siegel, 2001.
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*/
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/sched.h>
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#include <asm/machvec.h>
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#include <asm/snapgear.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include <asm/rtc.h>
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#include <asm/cpu/timer.h>
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extern void secureedge5410_rtc_init(void);
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extern void pcibios_init(void);
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/****************************************************************************/
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/*
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* EraseConfig handling functions
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*/
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static irqreturn_t eraseconfig_interrupt(int irq, void *dev_id)
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{
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volatile char dummy __attribute__((unused)) = * (volatile char *) 0xb8000000;
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printk("SnapGear: erase switch interrupt!\n");
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return IRQ_HANDLED;
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}
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static int __init eraseconfig_init(void)
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{
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printk("SnapGear: EraseConfig init\n");
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/* Setup "EraseConfig" switch on external IRQ 0 */
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if (request_irq(IRL0_IRQ, eraseconfig_interrupt, IRQF_DISABLED,
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"Erase Config", NULL))
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printk("SnapGear: failed to register IRQ%d for Reset witch\n",
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IRL0_IRQ);
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else
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printk("SnapGear: registered EraseConfig switch on IRQ%d\n",
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IRL0_IRQ);
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return(0);
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}
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module_init(eraseconfig_init);
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/****************************************************************************/
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/*
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* Initialize IRQ setting
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*
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* IRL0 = erase switch
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* IRL1 = eth0
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* IRL2 = eth1
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* IRL3 = crypto
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*/
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static struct ipr_data ipr_irq_table[] = {
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{ IRL0_IRQ, 0, IRL0_IPR_POS, IRL0_PRIORITY },
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{ IRL1_IRQ, 0, IRL1_IPR_POS, IRL1_PRIORITY },
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{ IRL2_IRQ, 0, IRL2_IPR_POS, IRL2_PRIORITY },
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{ IRL3_IRQ, 0, IRL3_IPR_POS, IRL3_PRIORITY },
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};
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static unsigned long ipr_offsets[] = {
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INTC_IPRD,
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};
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static struct ipr_desc ipr_irq_desc = {
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.ipr_offsets = ipr_offsets,
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.nr_offsets = ARRAY_SIZE(ipr_offsets),
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.ipr_data = ipr_irq_table,
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.nr_irqs = ARRAY_SIZE(ipr_irq_table),
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.chip = {
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.name = "IPR-snapgear",
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},
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};
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static void __init init_snapgear_IRQ(void)
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{
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/* enable individual interrupt mode for externals */
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ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
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printk("Setup SnapGear IRQ/IPR ...\n");
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register_ipr_controller(&ipr_irq_desc);
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}
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/*
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* Initialize the board
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*/
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static void __init snapgear_setup(char **cmdline_p)
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{
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board_time_init = secureedge5410_rtc_init;
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}
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/*
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* The Machine Vector
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*/
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static struct sh_machine_vector mv_snapgear __initmv = {
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.mv_name = "SnapGear SecureEdge5410",
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.mv_setup = snapgear_setup,
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.mv_nr_irqs = 72,
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.mv_inb = snapgear_inb,
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.mv_inw = snapgear_inw,
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.mv_inl = snapgear_inl,
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.mv_outb = snapgear_outb,
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.mv_outw = snapgear_outw,
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.mv_outl = snapgear_outl,
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.mv_inb_p = snapgear_inb_p,
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.mv_inw_p = snapgear_inw,
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.mv_inl_p = snapgear_inl,
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.mv_outb_p = snapgear_outb_p,
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.mv_outw_p = snapgear_outw,
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.mv_outl_p = snapgear_outl,
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.mv_init_irq = init_snapgear_IRQ,
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};
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