diff options
Diffstat (limited to 'src/include/kernel/segmentmgr.H')
| -rw-r--r-- | src/include/kernel/segmentmgr.H | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/src/include/kernel/segmentmgr.H b/src/include/kernel/segmentmgr.H index d2e4be2df..85ecf3269 100644 --- a/src/include/kernel/segmentmgr.H +++ b/src/include/kernel/segmentmgr.H @@ -51,17 +51,18 @@ class SegmentManager BASE_SEGMENT_ID = 0, /** Task Stack Segment (1-2TB). */ STACK_SEGMENT_ID = 1, - /** MMIO Space Segment (2-3TB). */ - MMIO_SEGMENT_ID = 2, + /** MMIO Space Segments (2-11TB). */ + MMIO_FIRST_SEGMENT_ID = 2, + MMIO_LAST_SEGMENT_ID = MMIO_FIRST_SEGMENT_ID + 8, - MAX_SEGMENTS = 4 + MAX_SEGMENTS = 16 }; enum { CI_ACCESS = 0xFFFFFFFF // Set to all F's to identify this type - }; + }; /** * Constructor. Initializes instance variables. @@ -130,12 +131,30 @@ class SegmentManager */ static void castOutPages(uint64_t i_type); + /** + * @brief Map a device into the device segment + * @param ra[in] - Void pointer to real address to be mapped in + * @param i_devDataSize[in] - Size of device segment block + * @return void* - Pointer to beginning virtual address, NULL otherwise + */ + static void* devMap(void* ra, uint64_t i_devDataSize); + + /** + * @brief Unmap a device from the device segment + * @param ea[in] - Void pointer to effective address + * @return int - 0 for successful unmap, non-zero otherwise + */ + static int devUnmap(void* ea); + + private: /** See handlePageFault. */ bool _handlePageFault(task_t* i_task, uint64_t i_addr); /** See addSegment. */ void _addSegment(Segment* i_segment, size_t i_segId); + /** See getSegment. */ + Segment* _getSegment(size_t i_segId); /** See initSLB. */ void _initSLB(); /** See updateRefCount. */ @@ -143,14 +162,19 @@ class SegmentManager PageTableManager::UsageStats_t i_stats ); /** See castOutPages */ void _castOutPages(uint64_t i_type); + /** See devMap */ + void* _devMap(void* ra, uint64_t i_devDataSize); + /** See devUnmap */ + int _devUnmap(void* ea); + /** See findPhysicalAddress */ uint64_t _findPhysicalAddress(uint64_t i_vaddr) const; ALWAYS_INLINE - size_t getSegmentIdFromAddress(uint64_t i_addr) const + static size_t getSegmentIdFromAddress(uint64_t i_addr) { - return i_addr >> SLBE_s; + return i_addr >> SLBE_s; } /** Array of segment objects to associated segment IDs. */ |
