mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-24 20:54:10 +08:00
[PATCH] xtensa: fix irq and misc fixes
Update the architecture specific interrupt handling code for Xtensa to support the new API. Use generic BUG macros in bug.h, and some minor fixes. Signed-off-by: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chris Zankel
Linus Torvalds
parent
5fcf7bb73f
commit
fd43fe19b8
@ -4,7 +4,7 @@
|
||||
* Xtensa built-in interrupt controller and some generic functions copied
|
||||
* from i386.
|
||||
*
|
||||
* Copyright (C) 2002 - 2005 Tensilica, Inc.
|
||||
* Copyright (C) 2002 - 2006 Tensilica, Inc.
|
||||
* Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
|
||||
*
|
||||
*
|
||||
@ -22,11 +22,6 @@
|
||||
#include <asm/uaccess.h>
|
||||
#include <asm/platform.h>
|
||||
|
||||
static void enable_xtensa_irq(unsigned int irq);
|
||||
static void disable_xtensa_irq(unsigned int irq);
|
||||
static void mask_and_ack_xtensa(unsigned int irq);
|
||||
static void end_xtensa_irq(unsigned int irq);
|
||||
|
||||
static unsigned int cached_irq_mask;
|
||||
|
||||
atomic_t irq_err_count;
|
||||
@ -46,8 +41,16 @@ void ack_bad_irq(unsigned int irq)
|
||||
* handlers).
|
||||
*/
|
||||
|
||||
unsigned int do_IRQ(int irq, struct pt_regs *regs)
|
||||
asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
|
||||
{
|
||||
struct pt_regs *old_regs = set_irq_regs(regs);
|
||||
struct irq_desc *desc = irq_desc + irq;
|
||||
|
||||
if (irq >= NR_IRQS) {
|
||||
printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
|
||||
__FUNCTION__, irq);
|
||||
}
|
||||
|
||||
irq_enter();
|
||||
|
||||
#ifdef CONFIG_DEBUG_STACKOVERFLOW
|
||||
@ -63,12 +66,10 @@ unsigned int do_IRQ(int irq, struct pt_regs *regs)
|
||||
sp - sizeof(struct thread_info));
|
||||
}
|
||||
#endif
|
||||
|
||||
__do_IRQ(irq, regs);
|
||||
desc->handle_irq(irq, desc);
|
||||
|
||||
irq_exit();
|
||||
|
||||
return 1;
|
||||
set_irq_regs(old_regs);
|
||||
}
|
||||
|
||||
/*
|
||||
@ -118,72 +119,68 @@ skip:
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
/* shutdown is same as "disable" */
|
||||
#define shutdown_xtensa_irq disable_xtensa_irq
|
||||
|
||||
static unsigned int startup_xtensa_irq(unsigned int irq)
|
||||
{
|
||||
enable_xtensa_irq(irq);
|
||||
return 0; /* never anything pending */
|
||||
}
|
||||
|
||||
static struct hw_interrupt_type xtensa_irq_type = {
|
||||
"Xtensa-IRQ",
|
||||
startup_xtensa_irq,
|
||||
shutdown_xtensa_irq,
|
||||
enable_xtensa_irq,
|
||||
disable_xtensa_irq,
|
||||
mask_and_ack_xtensa,
|
||||
end_xtensa_irq
|
||||
};
|
||||
|
||||
static inline void mask_irq(unsigned int irq)
|
||||
static void xtensa_irq_mask(unsigned int irq)
|
||||
{
|
||||
cached_irq_mask &= ~(1 << irq);
|
||||
set_sr (cached_irq_mask, INTENABLE);
|
||||
}
|
||||
|
||||
static inline void unmask_irq(unsigned int irq)
|
||||
static void xtensa_irq_unmask(unsigned int irq)
|
||||
{
|
||||
cached_irq_mask |= 1 << irq;
|
||||
set_sr (cached_irq_mask, INTENABLE);
|
||||
}
|
||||
|
||||
static void disable_xtensa_irq(unsigned int irq)
|
||||
static void xtensa_irq_ack(unsigned int irq)
|
||||
{
|
||||
unsigned long flags;
|
||||
local_save_flags(flags);
|
||||
mask_irq(irq);
|
||||
local_irq_restore(flags);
|
||||
set_sr(1 << irq, INTCLEAR);
|
||||
}
|
||||
|
||||
static void enable_xtensa_irq(unsigned int irq)
|
||||
static int xtensa_irq_retrigger(unsigned int irq)
|
||||
{
|
||||
unsigned long flags;
|
||||
local_save_flags(flags);
|
||||
unmask_irq(irq);
|
||||
local_irq_restore(flags);
|
||||
set_sr (1 << irq, INTSET);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void mask_and_ack_xtensa(unsigned int irq)
|
||||
{
|
||||
disable_xtensa_irq(irq);
|
||||
}
|
||||
|
||||
static void end_xtensa_irq(unsigned int irq)
|
||||
{
|
||||
enable_xtensa_irq(irq);
|
||||
}
|
||||
|
||||
static struct irq_chip xtensa_irq_chip = {
|
||||
.name = "xtensa",
|
||||
.mask = xtensa_irq_mask,
|
||||
.unmask = xtensa_irq_unmask,
|
||||
.ack = xtensa_irq_ack,
|
||||
.retrigger = xtensa_irq_retrigger,
|
||||
};
|
||||
|
||||
void __init init_IRQ(void)
|
||||
{
|
||||
int i;
|
||||
int index;
|
||||
|
||||
for (i=0; i < XTENSA_NR_IRQS; i++)
|
||||
irq_desc[i].chip = &xtensa_irq_type;
|
||||
for (index = 0; index < XTENSA_NR_IRQS; index++) {
|
||||
int mask = 1 << index;
|
||||
|
||||
if (mask & XCHAL_INTTYPE_MASK_SOFTWARE)
|
||||
set_irq_chip_and_handler(index, &xtensa_irq_chip,
|
||||
handle_simple_irq);
|
||||
|
||||
else if (mask & XCHAL_INTTYPE_MASK_EXTERN_EDGE)
|
||||
set_irq_chip_and_handler(index, &xtensa_irq_chip,
|
||||
handle_edge_irq);
|
||||
|
||||
else if (mask & XCHAL_INTTYPE_MASK_EXTERN_LEVEL)
|
||||
set_irq_chip_and_handler(index, &xtensa_irq_chip,
|
||||
handle_level_irq);
|
||||
|
||||
else if (mask & XCHAL_INTTYPE_MASK_TIMER)
|
||||
set_irq_chip_and_handler(index, &xtensa_irq_chip,
|
||||
handle_edge_irq);
|
||||
|
||||
else /* XCHAL_INTTYPE_MASK_WRITE_ERROR */
|
||||
/* XCHAL_INTTYPE_MASK_NMI */
|
||||
|
||||
set_irq_chip_and_handler(index, &xtensa_irq_chip,
|
||||
handle_level_irq);
|
||||
}
|
||||
|
||||
cached_irq_mask = 0;
|
||||
|
||||
platform_init_irq();
|
||||
}
|
||||
|
||||
@ -47,7 +47,7 @@ unsigned long long sched_clock(void)
|
||||
return (unsigned long long)jiffies * (1000000000 / HZ);
|
||||
}
|
||||
|
||||
static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs);
|
||||
static irqreturn_t timer_interrupt(int irq, void *dev_id);
|
||||
static struct irqaction timer_irqaction = {
|
||||
.handler = timer_interrupt,
|
||||
.flags = IRQF_DISABLED,
|
||||
@ -150,7 +150,7 @@ EXPORT_SYMBOL(do_gettimeofday);
|
||||
* The timer interrupt is called HZ times per second.
|
||||
*/
|
||||
|
||||
irqreturn_t timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
|
||||
irqreturn_t timer_interrupt (int irq, void *dev_id)
|
||||
{
|
||||
|
||||
unsigned long next;
|
||||
@ -160,9 +160,9 @@ irqreturn_t timer_interrupt (int irq, void *dev_id, struct pt_regs *regs)
|
||||
again:
|
||||
while ((signed long)(get_ccount() - next) > 0) {
|
||||
|
||||
profile_tick(CPU_PROFILING, regs);
|
||||
profile_tick(CPU_PROFILING);
|
||||
#ifndef CONFIG_SMP
|
||||
update_process_times(user_mode(regs));
|
||||
update_process_times(user_mode(get_irq_regs()));
|
||||
#endif
|
||||
|
||||
write_seqlock(&xtime_lock);
|
||||
|
||||
@ -17,6 +17,7 @@
|
||||
#include <asm-generic/vmlinux.lds.h>
|
||||
|
||||
#define _NOCLANGUAGE
|
||||
#undef __ASSEMBLER__
|
||||
#include <xtensa/config/core.h>
|
||||
#include <xtensa/config/system.h>
|
||||
OUTPUT_ARCH(xtensa)
|
||||
|
||||
@ -13,29 +13,6 @@
|
||||
#ifndef _XTENSA_BUG_H
|
||||
#define _XTENSA_BUG_H
|
||||
|
||||
#include <linux/stringify.h>
|
||||
|
||||
#define ILL __asm__ __volatile__ (".byte 0,0,0\n")
|
||||
|
||||
#ifdef CONFIG_KALLSYMS
|
||||
# define BUG() do { \
|
||||
printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
|
||||
ILL; \
|
||||
} while (0)
|
||||
#else
|
||||
# define BUG() do { \
|
||||
printk("kernel BUG!\n"); \
|
||||
ILL; \
|
||||
} while (0)
|
||||
#endif
|
||||
|
||||
#define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
|
||||
#define PAGE_BUG(page) do { BUG(); } while (0)
|
||||
#define WARN_ON(condition) do { \
|
||||
if (unlikely((condition)!=0)) { \
|
||||
printk ("Warning in %s at %s:%d\n", __FUNCTION__, __FILE__, __LINE__); \
|
||||
dump_stack(); \
|
||||
} \
|
||||
} while (0)
|
||||
#include <asm-generic/bug.h>
|
||||
|
||||
#endif /* _XTENSA_BUG_H */
|
||||
|
||||
@ -14,7 +14,7 @@
|
||||
#include <asm/processor.h>
|
||||
#include <asm/types.h>
|
||||
|
||||
static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
|
||||
static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x)
|
||||
{
|
||||
__u32 res;
|
||||
/* instruction sequence from Xtensa ISA release 2/2000 */
|
||||
@ -29,7 +29,7 @@ static __inline__ __const__ __u32 ___arch__swab32(__u32 x)
|
||||
return res;
|
||||
}
|
||||
|
||||
static __inline__ __const__ __u16 ___arch__swab16(__u16 x)
|
||||
static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x)
|
||||
{
|
||||
/* Given that 'short' values are signed (i.e., can be negative),
|
||||
* we cannot assume that the upper 16-bits of the register are
|
||||
|
||||
1
include/asm-xtensa/irq_regs.h
Normal file
1
include/asm-xtensa/irq_regs.h
Normal file
@ -0,0 +1 @@
|
||||
#include <asm-generic/irq_regs.h>
|
||||
@ -218,6 +218,8 @@
|
||||
|
||||
#define SYSXTENSA_COUNT 5 /* count of syscall0 functions*/
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
/*
|
||||
* "Conditional" syscalls
|
||||
*
|
||||
@ -230,6 +232,7 @@
|
||||
#define __ARCH_WANT_SYS_UTIME
|
||||
#define __ARCH_WANT_SYS_LLSEEK
|
||||
#define __ARCH_WANT_SYS_RT_SIGACTION
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* _XTENSA_UNISTD_H */
|
||||
|
||||
@ -115,7 +115,7 @@
|
||||
/* ... */
|
||||
|
||||
|
||||
#ifdef _ASMLANGUAGE
|
||||
#ifdef __ASSEMBLER__
|
||||
/*
|
||||
* Assembly-language specific definitions (assembly macros, etc.).
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user