Changeset 153cc76a in mainline for uspace/lib/c/generic/as.c
- Timestamp:
- 2011-12-23T16:42:22Z (13 years ago)
- Branches:
- lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export
- Children:
- 7e1b130
- Parents:
- 4291215 (diff), 2f0dd2a (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
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- 1 edited
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uspace/lib/c/generic/as.c
r4291215 r153cc76a 45 45 /** Create address space area. 46 46 * 47 * @param address Virtual address where to place new address space area. 48 * @param size Size of the area. 49 * @param flags Flags describing type of the area. 47 * @param base Starting virtual address of the area. 48 * If set to (void *) -1, the kernel finds 49 * a mappable area. 50 * @param size Size of the area. 51 * @param flags Flags describing type of the area. 50 52 * 51 * @return address on success, (void *) -1 otherwise. 53 * @return Starting virtual address of the created area on success. 54 * @return (void *) -1 otherwise. 52 55 * 53 56 */ 54 void *as_area_create(void * address, size_t size, unsigned int flags)57 void *as_area_create(void *base, size_t size, unsigned int flags) 55 58 { 56 return (void *) __SYSCALL 3(SYS_AS_AREA_CREATE, (sysarg_t) address,57 (sysarg_t) size, (sysarg_t) flags );59 return (void *) __SYSCALL4(SYS_AS_AREA_CREATE, (sysarg_t) base, 60 (sysarg_t) size, (sysarg_t) flags, (sysarg_t) __entry); 58 61 } 59 62 … … 102 105 } 103 106 104 /** Return pointer to unmapped address space area107 /** Find mapping to physical address. 105 108 * 106 * @param size Requested size of the allocation. 109 * @param virt Virtual address to find mapping for. 110 * @param[out] phys Physical adress. 107 111 * 108 * @return Pointer to the beginning of unmapped address space area. 112 * @return EOK on no error. 113 * @retval ENOENT if no mapping was found. 109 114 * 110 115 */ 111 void *as_get_mappable_page(size_t size)116 int as_get_physical_mapping(const void *virt, uintptr_t *phys) 112 117 { 113 return (void *) __SYSCALL2(SYS_AS_GET_UNMAPPED_AREA, 114 (sysarg_t) __entry, (sysarg_t) size); 115 } 116 117 /** Find mapping to physical address. 118 * 119 * @param address Virtual address in question (virtual). 120 * @param[out] frame Frame address (physical). 121 * @return Error code. 122 * @retval EOK No error, @p frame holds the translation. 123 * @retval ENOENT Mapping not found. 124 */ 125 int as_get_physical_mapping(const void *address, uintptr_t *frame) 126 { 127 uintptr_t tmp_frame; 128 uintptr_t virt = (uintptr_t) address; 129 130 int rc = (int) __SYSCALL2(SYS_PAGE_FIND_MAPPING, 131 (sysarg_t) virt, (sysarg_t) &tmp_frame); 132 if (rc != EOK) { 133 return rc; 134 } 135 136 if (frame != NULL) { 137 *frame = tmp_frame; 138 } 139 140 return EOK; 118 return (int) __SYSCALL2(SYS_PAGE_FIND_MAPPING, (sysarg_t) virt, 119 (sysarg_t) phys); 141 120 } 142 121
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