diff options
Diffstat (limited to 'include/asm-frv')
| -rw-r--r-- | include/asm-frv/mem-layout.h | 2 | ||||
| -rw-r--r-- | include/asm-frv/pgtable.h | 19 | ||||
| -rw-r--r-- | include/asm-frv/spr-regs.h | 14 | ||||
| -rw-r--r-- | include/asm-frv/system.h | 21 |
4 files changed, 44 insertions, 12 deletions
diff --git a/include/asm-frv/mem-layout.h b/include/asm-frv/mem-layout.h index 83532252b8b..734a1d0583b 100644 --- a/include/asm-frv/mem-layout.h +++ b/include/asm-frv/mem-layout.h @@ -60,7 +60,7 @@ */ #define BRK_BASE __UL(2 * 1024 * 1024 + PAGE_SIZE) #define STACK_TOP __UL(2 * 1024 * 1024) -#define STACK_TOP_MAX STACK_TOP +#define STACK_TOP_MAX __UL(0xc0000000) /* userspace process size */ #ifdef CONFIG_MMU diff --git a/include/asm-frv/pgtable.h b/include/asm-frv/pgtable.h index 6c0682ed5fc..4e219046fe4 100644 --- a/include/asm-frv/pgtable.h +++ b/include/asm-frv/pgtable.h @@ -507,13 +507,22 @@ static inline int pte_file(pte_t pte) */ static inline void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte) { + struct mm_struct *mm; unsigned long ampr; - pgd_t *pge = pgd_offset(current->mm, address); - pud_t *pue = pud_offset(pge, address); - pmd_t *pme = pmd_offset(pue, address); - ampr = pme->ste[0] & 0xffffff00; - ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C | xAMPRx_V; + mm = current->mm; + if (mm) { + pgd_t *pge = pgd_offset(mm, address); + pud_t *pue = pud_offset(pge, address); + pmd_t *pme = pmd_offset(pue, address); + + ampr = pme->ste[0] & 0xffffff00; + ampr |= xAMPRx_L | xAMPRx_SS_16Kb | xAMPRx_S | xAMPRx_C | + xAMPRx_V; + } else { + address = ULONG_MAX; + ampr = 0; + } asm volatile("movgs %0,scr0\n" "movgs %0,scr1\n" diff --git a/include/asm-frv/spr-regs.h b/include/asm-frv/spr-regs.h index c2a541ef828..01e6af5e99b 100644 --- a/include/asm-frv/spr-regs.h +++ b/include/asm-frv/spr-regs.h @@ -99,9 +99,23 @@ #define TBR_TT_TRAP1 (0x81 << 4) #define TBR_TT_TRAP2 (0x82 << 4) #define TBR_TT_TRAP3 (0x83 << 4) +#define TBR_TT_TRAP120 (0xf8 << 4) +#define TBR_TT_TRAP121 (0xf9 << 4) +#define TBR_TT_TRAP122 (0xfa << 4) +#define TBR_TT_TRAP123 (0xfb << 4) +#define TBR_TT_TRAP124 (0xfc << 4) +#define TBR_TT_TRAP125 (0xfd << 4) #define TBR_TT_TRAP126 (0xfe << 4) #define TBR_TT_BREAK (0xff << 4) +#define TBR_TT_ATOMIC_CMPXCHG32 TBR_TT_TRAP120 +#define TBR_TT_ATOMIC_XCHG32 TBR_TT_TRAP121 +#define TBR_TT_ATOMIC_XOR TBR_TT_TRAP122 +#define TBR_TT_ATOMIC_OR TBR_TT_TRAP123 +#define TBR_TT_ATOMIC_AND TBR_TT_TRAP124 +#define TBR_TT_ATOMIC_SUB TBR_TT_TRAP125 +#define TBR_TT_ATOMIC_ADD TBR_TT_TRAP126 + #define __get_TBR() ({ unsigned long x; asm volatile("movsg tbr,%0" : "=r"(x)); x; }) /* diff --git a/include/asm-frv/system.h b/include/asm-frv/system.h index 2c57f473474..30a67a9da11 100644 --- a/include/asm-frv/system.h +++ b/include/asm-frv/system.h @@ -179,14 +179,23 @@ do { \ #define mb() asm volatile ("membar" : : :"memory") #define rmb() asm volatile ("membar" : : :"memory") #define wmb() asm volatile ("membar" : : :"memory") -#define set_mb(var, value) do { var = value; mb(); } while (0) +#define read_barrier_depends() barrier() -#define smp_mb() mb() -#define smp_rmb() rmb() -#define smp_wmb() wmb() - -#define read_barrier_depends() do {} while(0) +#ifdef CONFIG_SMP +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() #define smp_read_barrier_depends() read_barrier_depends() +#define set_mb(var, value) \ + do { xchg(&var, (value)); } while (0) +#else +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#define smp_read_barrier_depends() do {} while(0) +#define set_mb(var, value) \ + do { var = (value); barrier(); } while (0) +#endif #define HARD_RESET_NOW() \ do { \ |