diff options
| -rw-r--r-- | arch/xtensa/kernel/irq.c | 107 | ||||
| -rw-r--r-- | arch/xtensa/kernel/time.c | 8 | ||||
| -rw-r--r-- | arch/xtensa/kernel/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | include/asm-xtensa/bug.h | 25 | ||||
| -rw-r--r-- | include/asm-xtensa/byteorder.h | 4 | ||||
| -rw-r--r-- | include/asm-xtensa/irq_regs.h | 1 | ||||
| -rw-r--r-- | include/asm-xtensa/unistd.h | 3 | ||||
| -rw-r--r-- | include/asm-xtensa/xtensa/config-linux_be/tie.h | 2 |
8 files changed, 65 insertions, 86 deletions
diff --git a/arch/xtensa/kernel/irq.c b/arch/xtensa/kernel/irq.c index 1cf744ee095..c9ea73b7031 100644 --- a/arch/xtensa/kernel/irq.c +++ b/arch/xtensa/kernel/irq.c @@ -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); -} - -static void mask_and_ack_xtensa(unsigned int irq) -{ - disable_xtensa_irq(irq); + set_sr (1 << irq, INTSET); + return 1; } -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; - cached_irq_mask = 0; + if (mask & XCHAL_INTTYPE_MASK_SOFTWARE) + set_irq_chip_and_handler(index, &xtensa_irq_chip, + handle_simple_irq); - platform_init_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; } diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c index 37347e36998..a350431363a 100644 --- a/arch/xtensa/kernel/time.c +++ b/arch/xtensa/kernel/time.c @@ -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); diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S index cfe75f52872..e01131fec69 100644 --- a/arch/xtensa/kernel/vmlinux.lds.S +++ b/arch/xtensa/kernel/vmlinux.lds.S @@ -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) diff --git a/include/asm-xtensa/bug.h b/include/asm-xtensa/bug.h index 56703659b20..3e52d72712f 100644 --- a/include/asm-xtensa/bug.h +++ b/include/asm-xtensa/bug.h @@ -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 */ diff --git a/include/asm-xtensa/byteorder.h b/include/asm-xtensa/byteorder.h index 0b1552569aa..0ba72ddbf88 100644 --- a/include/asm-xtensa/byteorder.h +++ b/include/asm-xtensa/byteorder.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 diff --git a/include/asm-xtensa/irq_regs.h b/include/asm-xtensa/irq_regs.h new file mode 100644 index 00000000000..3dd9c0b7027 --- /dev/null +++ b/include/asm-xtensa/irq_regs.h @@ -0,0 +1 @@ +#include <asm-generic/irq_regs.h> diff --git a/include/asm-xtensa/unistd.h b/include/asm-xtensa/unistd.h index 2e1a1b997e7..15b0932523d 100644 --- a/include/asm-xtensa/unistd.h +++ b/include/asm-xtensa/unistd.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 */ diff --git a/include/asm-xtensa/xtensa/config-linux_be/tie.h b/include/asm-xtensa/xtensa/config-linux_be/tie.h index 3c2e514602f..07c6d1ca458 100644 --- a/include/asm-xtensa/xtensa/config-linux_be/tie.h +++ b/include/asm-xtensa/xtensa/config-linux_be/tie.h @@ -115,7 +115,7 @@ /* ... */ -#ifdef _ASMLANGUAGE +#ifdef __ASSEMBLER__ /* * Assembly-language specific definitions (assembly macros, etc.). */ |