diff options
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/include/asm/atomic.h | 107 | ||||
| -rw-r--r-- | arch/parisc/include/asm/cmpxchg.h | 116 | ||||
| -rw-r--r-- | arch/parisc/include/asm/hardware.h | 3 | ||||
| -rw-r--r-- | arch/parisc/include/asm/page.h | 6 | ||||
| -rw-r--r-- | arch/parisc/include/asm/pdc.h | 7 | ||||
| -rw-r--r-- | arch/parisc/include/asm/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/parisc/include/asm/spinlock.h | 2 | ||||
| -rw-r--r-- | arch/parisc/kernel/pdc_cons.c | 3 | ||||
| -rw-r--r-- | arch/parisc/kernel/time.c | 1 |
9 files changed, 132 insertions, 115 deletions
diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h index 3ae56073cc3d..6c6defc24619 100644 --- a/arch/parisc/include/asm/atomic.h +++ b/arch/parisc/include/asm/atomic.h @@ -6,6 +6,7 @@ #define _ASM_PARISC_ATOMIC_H_ #include <linux/types.h> +#include <asm/cmpxchg.h> /* * Atomic operations that C can't guarantee us. Useful for @@ -48,112 +49,6 @@ extern arch_spinlock_t __atomic_hash[ATOMIC_HASH_SIZE] __lock_aligned; # define _atomic_spin_unlock_irqrestore(l,f) do { local_irq_restore(f); } while (0) #endif -/* This should get optimized out since it's never called. -** Or get a link error if xchg is used "wrong". -*/ -extern void __xchg_called_with_bad_pointer(void); - - -/* __xchg32/64 defined in arch/parisc/lib/bitops.c */ -extern unsigned long __xchg8(char, char *); -extern unsigned long __xchg32(int, int *); -#ifdef CONFIG_64BIT -extern unsigned long __xchg64(unsigned long, unsigned long *); -#endif - -/* optimizer better get rid of switch since size is a constant */ -static __inline__ unsigned long -__xchg(unsigned long x, __volatile__ void * ptr, int size) -{ - switch(size) { -#ifdef CONFIG_64BIT - case 8: return __xchg64(x,(unsigned long *) ptr); -#endif - case 4: return __xchg32((int) x, (int *) ptr); - case 1: return __xchg8((char) x, (char *) ptr); - } - __xchg_called_with_bad_pointer(); - return x; -} - - -/* -** REVISIT - Abandoned use of LDCW in xchg() for now: -** o need to test sizeof(*ptr) to avoid clearing adjacent bytes -** o and while we are at it, could CONFIG_64BIT code use LDCD too? -** -** if (__builtin_constant_p(x) && (x == NULL)) -** if (((unsigned long)p & 0xf) == 0) -** return __ldcw(p); -*/ -#define xchg(ptr,x) \ - ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) - - -#define __HAVE_ARCH_CMPXCHG 1 - -/* bug catcher for when unsupported size is used - won't link */ -extern void __cmpxchg_called_with_bad_pointer(void); - -/* __cmpxchg_u32/u64 defined in arch/parisc/lib/bitops.c */ -extern unsigned long __cmpxchg_u32(volatile unsigned int *m, unsigned int old, unsigned int new_); -extern unsigned long __cmpxchg_u64(volatile unsigned long *ptr, unsigned long old, unsigned long new_); - -/* don't worry...optimizer will get rid of most of this */ -static __inline__ unsigned long -__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size) -{ - switch(size) { -#ifdef CONFIG_64BIT - case 8: return __cmpxchg_u64((unsigned long *)ptr, old, new_); -#endif - case 4: return __cmpxchg_u32((unsigned int *)ptr, (unsigned int) old, (unsigned int) new_); - } - __cmpxchg_called_with_bad_pointer(); - return old; -} - -#define cmpxchg(ptr,o,n) \ - ({ \ - __typeof__(*(ptr)) _o_ = (o); \ - __typeof__(*(ptr)) _n_ = (n); \ - (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \ - (unsigned long)_n_, sizeof(*(ptr))); \ - }) - -#include <asm-generic/cmpxchg-local.h> - -static inline unsigned long __cmpxchg_local(volatile void *ptr, - unsigned long old, - unsigned long new_, int size) -{ - switch (size) { -#ifdef CONFIG_64BIT - case 8: return __cmpxchg_u64((unsigned long *)ptr, old, new_); -#endif - case 4: return __cmpxchg_u32(ptr, old, new_); - default: - return __cmpxchg_local_generic(ptr, old, new_, size); - } -} - -/* - * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make - * them available. - */ -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \ - (unsigned long)(n), sizeof(*(ptr)))) -#ifdef CONFIG_64BIT -#define cmpxchg64_local(ptr, o, n) \ - ({ \ - BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ - cmpxchg_local((ptr), (o), (n)); \ - }) -#else -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) -#endif - /* * Note that we need not lock read accesses - aligned word writes/reads * are atomic, so a reader never sees inconsistent values. diff --git a/arch/parisc/include/asm/cmpxchg.h b/arch/parisc/include/asm/cmpxchg.h new file mode 100644 index 000000000000..dbd13354ec41 --- /dev/null +++ b/arch/parisc/include/asm/cmpxchg.h @@ -0,0 +1,116 @@ +/* + * forked from parisc asm/atomic.h which was: + * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> + * Copyright (C) 2006 Kyle McMartin <kyle@parisc-linux.org> + */ + +#ifndef _ASM_PARISC_CMPXCHG_H_ +#define _ASM_PARISC_CMPXCHG_H_ + +/* This should get optimized out since it's never called. +** Or get a link error if xchg is used "wrong". +*/ +extern void __xchg_called_with_bad_pointer(void); + +/* __xchg32/64 defined in arch/parisc/lib/bitops.c */ +extern unsigned long __xchg8(char, char *); +extern unsigned long __xchg32(int, int *); +#ifdef CONFIG_64BIT +extern unsigned long __xchg64(unsigned long, unsigned long *); +#endif + +/* optimizer better get rid of switch since size is a constant */ +static inline unsigned long +__xchg(unsigned long x, __volatile__ void *ptr, int size) +{ + switch (size) { +#ifdef CONFIG_64BIT + case 8: return __xchg64(x, (unsigned long *) ptr); +#endif + case 4: return __xchg32((int) x, (int *) ptr); + case 1: return __xchg8((char) x, (char *) ptr); + } + __xchg_called_with_bad_pointer(); + return x; +} + +/* +** REVISIT - Abandoned use of LDCW in xchg() for now: +** o need to test sizeof(*ptr) to avoid clearing adjacent bytes +** o and while we are at it, could CONFIG_64BIT code use LDCD too? +** +** if (__builtin_constant_p(x) && (x == NULL)) +** if (((unsigned long)p & 0xf) == 0) +** return __ldcw(p); +*/ +#define xchg(ptr, x) \ + ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr)))) + +#define __HAVE_ARCH_CMPXCHG 1 + +/* bug catcher for when unsupported size is used - won't link */ +extern void __cmpxchg_called_with_bad_pointer(void); + +/* __cmpxchg_u32/u64 defined in arch/parisc/lib/bitops.c */ +extern unsigned long __cmpxchg_u32(volatile unsigned int *m, unsigned int old, + unsigned int new_); +extern unsigned long __cmpxchg_u64(volatile unsigned long *ptr, + unsigned long old, unsigned long new_); + +/* don't worry...optimizer will get rid of most of this */ +static inline unsigned long +__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new_, int size) +{ + switch (size) { +#ifdef CONFIG_64BIT + case 8: return __cmpxchg_u64((unsigned long *)ptr, old, new_); +#endif + case 4: return __cmpxchg_u32((unsigned int *)ptr, + (unsigned int)old, (unsigned int)new_); + } + __cmpxchg_called_with_bad_pointer(); + return old; +} + +#define cmpxchg(ptr, o, n) \ +({ \ + __typeof__(*(ptr)) _o_ = (o); \ + __typeof__(*(ptr)) _n_ = (n); \ + (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_, \ + (unsigned long)_n_, sizeof(*(ptr))); \ +}) + +#include <asm-generic/cmpxchg-local.h> + +static inline unsigned long __cmpxchg_local(volatile void *ptr, + unsigned long old, + unsigned long new_, int size) +{ + switch (size) { +#ifdef CONFIG_64BIT + case 8: return __cmpxchg_u64((unsigned long *)ptr, old, new_); +#endif + case 4: return __cmpxchg_u32(ptr, old, new_); + default: + return __cmpxchg_local_generic(ptr, old, new_, size); + } +} + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \ + (unsigned long)(n), sizeof(*(ptr)))) +#ifdef CONFIG_64BIT +#define cmpxchg64_local(ptr, o, n) \ +({ \ + BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ + cmpxchg_local((ptr), (o), (n)); \ +}) +#else +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) +#endif + +#endif /* _ASM_PARISC_CMPXCHG_H_ */ diff --git a/arch/parisc/include/asm/hardware.h b/arch/parisc/include/asm/hardware.h index 4e9626836bab..d1d864b81bae 100644 --- a/arch/parisc/include/asm/hardware.h +++ b/arch/parisc/include/asm/hardware.h @@ -2,7 +2,6 @@ #define _PARISC_HARDWARE_H #include <linux/mod_devicetable.h> -#include <asm/pdc.h> #define HWTYPE_ANY_ID PA_HWTYPE_ANY_ID #define HVERSION_ANY_ID PA_HVERSION_ANY_ID @@ -95,12 +94,14 @@ struct bc_module { #define HPHW_MC 15 #define HPHW_FAULTY 31 +struct parisc_device_id; /* hardware.c: */ extern const char *parisc_hardware_description(struct parisc_device_id *id); extern enum cpu_type parisc_get_cpu_type(unsigned long hversion); struct pci_dev; +struct hardware_path; /* drivers.c: */ extern struct parisc_device *alloc_pa_dev(unsigned long hpa, diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h index a84cc1f925f6..4e0e7dbf0f3f 100644 --- a/arch/parisc/include/asm/page.h +++ b/arch/parisc/include/asm/page.h @@ -160,5 +160,11 @@ extern int npmem_ranges; #include <asm-generic/memory_model.h> #include <asm-generic/getorder.h> +#include <asm/pdc.h> + +#define PAGE0 ((struct zeropage *)__PAGE_OFFSET) + +/* DEFINITION OF THE ZERO-PAGE (PAG0) */ +/* based on work by Jason Eckhardt (jason@equator.com) */ #endif /* _PARISC_PAGE_H */ diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h index 4ca510b3c6f8..7f0f2d23059d 100644 --- a/arch/parisc/include/asm/pdc.h +++ b/arch/parisc/include/asm/pdc.h @@ -343,8 +343,6 @@ #ifdef __KERNEL__ -#include <asm/page.h> /* for __PAGE_OFFSET */ - extern int pdc_type; /* Values for pdc_type */ @@ -677,11 +675,6 @@ static inline char * os_id_to_string(u16 os_id) { #endif /* __KERNEL__ */ -#define PAGE0 ((struct zeropage *)__PAGE_OFFSET) - -/* DEFINITION OF THE ZERO-PAGE (PAG0) */ -/* based on work by Jason Eckhardt (jason@equator.com) */ - /* flags of the device_path */ #define PF_AUTOBOOT 0x80 #define PF_AUTOSEARCH 0x40 diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h index 22dadeb58695..ee99f2339356 100644 --- a/arch/parisc/include/asm/pgtable.h +++ b/arch/parisc/include/asm/pgtable.h @@ -44,6 +44,8 @@ struct vm_area_struct; #endif /* !__ASSEMBLY__ */ +#include <asm/page.h> + #define pte_ERROR(e) \ printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) #define pmd_ERROR(e) \ diff --git a/arch/parisc/include/asm/spinlock.h b/arch/parisc/include/asm/spinlock.h index 804aa28ab1d6..3516e0b27044 100644 --- a/arch/parisc/include/asm/spinlock.h +++ b/arch/parisc/include/asm/spinlock.h @@ -1,6 +1,8 @@ #ifndef __ASM_SPINLOCK_H #define __ASM_SPINLOCK_H +#include <asm/barrier.h> +#include <asm/ldcw.h> #include <asm/processor.h> #include <asm/spinlock_types.h> diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index 4f004596a6e7..47341aa208f2 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c @@ -50,6 +50,7 @@ #include <linux/init.h> #include <linux/major.h> #include <linux/tty.h> +#include <asm/page.h> /* for PAGE0 */ #include <asm/pdc.h> /* for iodc_call() proto and friends */ static DEFINE_SPINLOCK(pdc_console_lock); @@ -104,7 +105,7 @@ static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp) static void pdc_console_tty_close(struct tty_struct *tty, struct file *filp) { - if (!tty->count) { + if (tty->count == 1) { del_timer_sync(&pdc_console_timer); tty_port_tty_set(&tty_port, NULL); } diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 7c0774397b89..70e105d62423 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -29,6 +29,7 @@ #include <asm/uaccess.h> #include <asm/io.h> #include <asm/irq.h> +#include <asm/page.h> #include <asm/param.h> #include <asm/pdc.h> #include <asm/led.h> |