diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ia64/sn/rw_mmr.h | 56 |
1 files changed, 5 insertions, 51 deletions
diff --git a/include/asm-ia64/sn/rw_mmr.h b/include/asm-ia64/sn/rw_mmr.h index f40fd1a5510d..2d78f4c5a45e 100644 --- a/include/asm-ia64/sn/rw_mmr.h +++ b/include/asm-ia64/sn/rw_mmr.h | |||
| @@ -3,15 +3,14 @@ | |||
| 3 | * License. See the file "COPYING" in the main directory of this archive | 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. | 4 | * for more details. |
| 5 | * | 5 | * |
| 6 | * Copyright (C) 2002-2004 Silicon Graphics, Inc. All Rights Reserved. | 6 | * Copyright (C) 2002-2006 Silicon Graphics, Inc. All Rights Reserved. |
| 7 | */ | 7 | */ |
| 8 | #ifndef _ASM_IA64_SN_RW_MMR_H | 8 | #ifndef _ASM_IA64_SN_RW_MMR_H |
| 9 | #define _ASM_IA64_SN_RW_MMR_H | 9 | #define _ASM_IA64_SN_RW_MMR_H |
| 10 | 10 | ||
| 11 | 11 | ||
| 12 | /* | 12 | /* |
| 13 | * This file contains macros used to access MMR registers via | 13 | * This file that access MMRs via uncached physical addresses. |
| 14 | * uncached physical addresses. | ||
| 15 | * pio_phys_read_mmr - read an MMR | 14 | * pio_phys_read_mmr - read an MMR |
| 16 | * pio_phys_write_mmr - write an MMR | 15 | * pio_phys_write_mmr - write an MMR |
| 17 | * pio_atomic_phys_write_mmrs - atomically write 1 or 2 MMRs with psr.ic=0 | 16 | * pio_atomic_phys_write_mmrs - atomically write 1 or 2 MMRs with psr.ic=0 |
| @@ -22,53 +21,8 @@ | |||
| 22 | */ | 21 | */ |
| 23 | 22 | ||
| 24 | 23 | ||
| 25 | extern inline long | 24 | extern long pio_phys_read_mmr(volatile long *mmr); |
| 26 | pio_phys_read_mmr(volatile long *mmr) | 25 | extern void pio_phys_write_mmr(volatile long *mmr, long val); |
| 27 | { | 26 | extern void pio_atomic_phys_write_mmrs(volatile long *mmr1, long val1, volatile long *mmr2, long val2); |
| 28 | long val; | ||
| 29 | asm volatile | ||
| 30 | ("mov r2=psr;;" | ||
| 31 | "rsm psr.i | psr.dt;;" | ||
| 32 | "srlz.i;;" | ||
| 33 | "ld8.acq %0=[%1];;" | ||
| 34 | "mov psr.l=r2;;" | ||
| 35 | "srlz.i;;" | ||
| 36 | : "=r"(val) | ||
| 37 | : "r"(mmr) | ||
| 38 | : "r2"); | ||
| 39 | return val; | ||
| 40 | } | ||
| 41 | |||
| 42 | |||
| 43 | |||
| 44 | extern inline void | ||
| 45 | pio_phys_write_mmr(volatile long *mmr, long val) | ||
| 46 | { | ||
| 47 | asm volatile | ||
| 48 | ("mov r2=psr;;" | ||
| 49 | "rsm psr.i | psr.dt;;" | ||
| 50 | "srlz.i;;" | ||
| 51 | "st8.rel [%0]=%1;;" | ||
| 52 | "mov psr.l=r2;;" | ||
| 53 | "srlz.i;;" | ||
| 54 | :: "r"(mmr), "r"(val) | ||
| 55 | : "r2", "memory"); | ||
| 56 | } | ||
| 57 | |||
| 58 | extern inline void | ||
| 59 | pio_atomic_phys_write_mmrs(volatile long *mmr1, long val1, volatile long *mmr2, long val2) | ||
| 60 | { | ||
| 61 | asm volatile | ||
| 62 | ("mov r2=psr;;" | ||
| 63 | "rsm psr.i | psr.dt | psr.ic;;" | ||
| 64 | "cmp.ne p9,p0=%2,r0;" | ||
| 65 | "srlz.i;;" | ||
| 66 | "st8.rel [%0]=%1;" | ||
| 67 | "(p9) st8.rel [%2]=%3;;" | ||
| 68 | "mov psr.l=r2;;" | ||
| 69 | "srlz.i;;" | ||
| 70 | :: "r"(mmr1), "r"(val1), "r"(mmr2), "r"(val2) | ||
| 71 | : "p9", "r2", "memory"); | ||
| 72 | } | ||
| 73 | 27 | ||
| 74 | #endif /* _ASM_IA64_SN_RW_MMR_H */ | 28 | #endif /* _ASM_IA64_SN_RW_MMR_H */ |
