Changeset 153cc76a in mainline for uspace/lib/c/generic/as.c


Ignore:
Timestamp:
2011-12-23T16:42:22Z (13 years ago)
Author:
Jan Vesely <jano.vesely@…>
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.
Use the (diff) links above to see all the changes relative to each parent.
Message:

Mainline changes.

File:
1 edited

Legend:

Unmodified
Added
Removed
  • uspace/lib/c/generic/as.c

    r4291215 r153cc76a  
    4545/** Create address space area.
    4646 *
    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.
    5052 *
    51  * @return address on success, (void *) -1 otherwise.
     53 * @return Starting virtual address of the created area on success.
     54 * @return (void *) -1 otherwise.
    5255 *
    5356 */
    54 void *as_area_create(void *address, size_t size, unsigned int flags)
     57void *as_area_create(void *base, size_t size, unsigned int flags)
    5558{
    56         return (void *) __SYSCALL3(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);
    5861}
    5962
     
    102105}
    103106
    104 /** Return pointer to unmapped address space area
     107/** Find mapping to physical address.
    105108 *
    106  * @param size Requested size of the allocation.
     109 * @param      virt Virtual address to find mapping for.
     110 * @param[out] phys Physical adress.
    107111 *
    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.
    109114 *
    110115 */
    111 void *as_get_mappable_page(size_t size)
     116int as_get_physical_mapping(const void *virt, uintptr_t *phys)
    112117{
    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);
    141120}
    142121
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