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sh: NR_IRQS consolidation.
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Each board sets the total number of IRQs that it's interested in via
the machvec. Previously we cared about the off vs on-chip IRQ range,
but any code relying on that is long dead. Set NR_IRQS to something
sensible given the vector range, and allow boards to cap it if they
really care.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored and Paul Mundt committed May 7, 2007
1 parent fa69151 commit be782df
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Showing 2 changed files with 8 additions and 88 deletions.
5 changes: 3 additions & 2 deletions arch/sh/kernel/irq.c
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
#include <linux/seq_file.h>
#include <linux/irq.h>
#include <asm/processor.h>
#include <asm/machvec.h>
#include <asm/uaccess.h>
#include <asm/thread_info.h>
#include <asm/cpu/mmu_context.h>
Expand Down Expand Up @@ -44,7 +45,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
}

if (i < NR_IRQS) {
if (i < sh_mv.mv_nr_irqs) {
spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
if (!action)
Expand All @@ -61,7 +62,7 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
unlock:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
} else if (i == NR_IRQS)
} else if (i == sh_mv.mv_nr_irqs)
seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));

return 0;
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91 changes: 5 additions & 86 deletions include/asm-sh/irq.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2,94 +2,13 @@
#define __ASM_SH_IRQ_H

#include <asm/machvec.h>
#include <asm/ptrace.h> /* for pt_regs */

/* NR_IRQS is made from three components:
* 1. ONCHIP_NR_IRQS - number of IRLS + on-chip peripherial modules
* 2. PINT_NR_IRQS - number of PINT interrupts
* 3. OFFCHIP_NR_IRQS - numbe of IRQs from off-chip peripherial modules
/*
* A sane default based on a reasonable vector table size, platforms are
* advised to cap this at the hard limit that they're interested in
* through the machvec.
*/

/* 1. ONCHIP_NR_IRQS */
#if defined(CONFIG_CPU_SUBTYPE_SH7604)
# define ONCHIP_NR_IRQS 24 // Actually 21
#elif defined(CONFIG_CPU_SUBTYPE_SH7707)
# define ONCHIP_NR_IRQS 64
# define PINT_NR_IRQS 16
#elif defined(CONFIG_CPU_SUBTYPE_SH7708)
# define ONCHIP_NR_IRQS 32
#elif defined(CONFIG_CPU_SUBTYPE_SH7709) || \
defined(CONFIG_CPU_SUBTYPE_SH7706) || \
defined(CONFIG_CPU_SUBTYPE_SH7705)
# define ONCHIP_NR_IRQS 64 // Actually 61
# define PINT_NR_IRQS 16
#elif defined(CONFIG_CPU_SUBTYPE_SH7710)
# define ONCHIP_NR_IRQS 104
#elif defined(CONFIG_CPU_SUBTYPE_SH7750)
# define ONCHIP_NR_IRQS 48 // Actually 44
#elif defined(CONFIG_CPU_SUBTYPE_SH7751)
# define ONCHIP_NR_IRQS 72
#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
# define ONCHIP_NR_IRQS 112 /* XXX */
#elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
# define ONCHIP_NR_IRQS 72
#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1)
# define ONCHIP_NR_IRQS 144
#elif defined(CONFIG_CPU_SUBTYPE_SH7300) || \
defined(CONFIG_CPU_SUBTYPE_SH73180) || \
defined(CONFIG_CPU_SUBTYPE_SH7343) || \
defined(CONFIG_CPU_SUBTYPE_SH7722)
# define ONCHIP_NR_IRQS 109
#elif defined(CONFIG_CPU_SUBTYPE_SH7780)
# define ONCHIP_NR_IRQS 111
#elif defined(CONFIG_CPU_SUBTYPE_SH7206)
# define ONCHIP_NR_IRQS 256
#elif defined(CONFIG_CPU_SUBTYPE_SH7619)
# define ONCHIP_NR_IRQS 128
#elif defined(CONFIG_SH_UNKNOWN) /* Most be last */
# define ONCHIP_NR_IRQS 144
#endif

/* 2. PINT_NR_IRQS */
#ifdef CONFIG_SH_UNKNOWN
# define PINT_NR_IRQS 16
#else
# ifndef PINT_NR_IRQS
# define PINT_NR_IRQS 0
# endif
#endif

#if PINT_NR_IRQS > 0
# define PINT_IRQ_BASE ONCHIP_NR_IRQS
#endif

/* 3. OFFCHIP_NR_IRQS */
#if defined(CONFIG_HD64461)
# define OFFCHIP_NR_IRQS 18
#elif defined(CONFIG_HD64465)
# define OFFCHIP_NR_IRQS 16
#elif defined (CONFIG_SH_DREAMCAST)
# define OFFCHIP_NR_IRQS 96
#elif defined (CONFIG_SH_TITAN)
# define OFFCHIP_NR_IRQS 4
#elif defined(CONFIG_SH_R7780RP)
# define OFFCHIP_NR_IRQS 16
#elif defined(CONFIG_SH_7343_SOLUTION_ENGINE)
# define OFFCHIP_NR_IRQS 12
#elif defined(CONFIG_SH_7722_SOLUTION_ENGINE)
# define OFFCHIP_NR_IRQS 14
#elif defined(CONFIG_SH_UNKNOWN)
# define OFFCHIP_NR_IRQS 16 /* Must also be last */
#else
# define OFFCHIP_NR_IRQS 0
#endif

#if OFFCHIP_NR_IRQS > 0
# define OFFCHIP_IRQ_BASE (ONCHIP_NR_IRQS + PINT_NR_IRQS)
#endif

/* NR_IRQS. 1+2+3 */
#define NR_IRQS (ONCHIP_NR_IRQS + PINT_NR_IRQS + OFFCHIP_NR_IRQS)
#define NR_IRQS 256

/*
* Convert back and forth between INTEVT and IRQ values.
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