habanalabs/common/memory.c

56  * device virtual memory.
60  * virtual range which is a half of the total device virtual range.
62  * On each mapping of physical pages, a suitable virtual range chunk (with a
67  * On each Unmapping of a virtual address, the relevant virtual chunk is
73  * virtual range (which is a half of the device total virtual range).
214  * dma_map_host_va() - DMA mapping of the given host virtual address.
216  * @addr: the host virtual address of the memory area.
265  * dma_unmap_host_va() - DMA unmapping of the given host virtual address.
389  * clear_va_list_locked() - free virtual addresses list.
391  * @va_list: list of virtual addresses to free.
394  * - Iterate over the list and free each virtual addresses block.
410  * print_va_list_locked() - print virtual addresses list.
412  * @va_list: list of virtual addresses to print.
415  * - Iterate over the list and print each virtual addresses block.
435  * merge_va_blocks_locked() - merge a virtual block if possible.
437  * @va_list: pointer to the virtual addresses block list.
438  * @va_block: virtual block to merge with adjacent blocks.
441  * - Merge the given blocks with the adjacent blocks if their virtual ranges
442  *   create a contiguous virtual range.
470  * add_va_block_locked() - add a virtual block to the virtual addresses list.
472  * @va_list: pointer to the virtual addresses block list.
473  * @start: start virtual address.
474  * @end: end virtual address.
477  * - Add the given block to the virtual blocks list and merge with other blocks
478  *   if a contiguous virtual block can be created.
527  * @va_range: pointer to the virtual addresses range object.
528  * @start: start virtual address.
529  * @end: end virtual address.
548  * @range_type: virtual space range type.
549  * @start_addr: start virtual address.
577  * get_va_block() - get a virtual block for the given size and alignment.
580  * @va_range: pointer to the virtual addresses range.
583  * @va_block_align: required alignment of the virtual block start address.
588  * - Iterate on the virtual block list to find a suitable virtual block for the
591  * - Return the start address of the virtual block.
706 	 * va block, then return it to the main virtual addresses list.  in get_va_block()
742  * hl_reserve_va_block() - reserve a virtual block of a given size.
745  * @type: virtual addresses range type.
747  * @alignment: required alignment in bytes of the virtual block start address,
751  * - Iterate on the virtual block list to find a suitable virtual block for the
754  * - Return the start address of the virtual block.
794  * @start_addr: start virtual address.
836  *   virtual block.
934  * @vaddr: start address of the virtual area to map from.
938  * - Maps each chunk of virtual memory to matching physical chunk.
1002  * @vaddr: start address of the virtual area to unmap.
1039  * @args: host parameters with handle/host virtual address.
1040  * @device_addr: pointer to result device virtual address.
1043  * - If given a physical device memory handle, map to a device virtual block
1045  * - If given a host virtual address and size, find the related physical pages,
1046  *   map a device virtual block to this pages and return the start address of
1263  * unmap_device_va() - unmap the given device virtual address.
1265  * @args: host parameters with device virtual address to unmap.
1269  * - unmap the physical pages related to the given virtual address.
1270  * - return the device virtual block to the virtual block list.
2047 	/* offset must be 0 in devices without virtual memory support */  in export_dmabuf_from_addr()
2049 		dev_dbg(hdev->dev, "offset is not allowed in device without virtual memory\n");  in export_dmabuf_from_addr()
2225 		/* If DRAM does not support virtual memory the driver won't  in hl_mem_ioctl()
2254 		/* If DRAM does not support virtual memory the driver won't  in hl_mem_ioctl()
2369  * @addr: the host virtual address of the memory area.
2506  * va_range_init() - initialize virtual addresses range.
2509  * @range_type: virtual address range type.
2515  * - Initializes the virtual addresses list of the given range with the given
2565  * va_range_fini() - clear a virtual addresses range.
2567  * @va_range: pointer to virtual addresses range.
2570  * - Frees the virtual addresses block list and its lock.
2583  * vm_ctx_init_with_ranges() - initialize virtual memory for context.
2585  * @host_range_start: host virtual addresses range start.
2586  * @host_range_end: host virtual addresses range end.
2588  * @host_huge_range_start: host virtual addresses range start for memory
2590  * @host_huge_range_end: host virtual addresses range end for memory allocated
2593  * @dram_range_start: dram virtual addresses range start.
2594  * @dram_range_end: dram virtual addresses range end.
2599  * - Virtual address to area descriptor hashtable.
2600  * - Virtual block list of available virtual memory.
2734  * hl_vm_ctx_fini() - virtual memory teardown of context.
2738  * - Virtual block list of available virtual memory.
2739  * - Virtual address to area descriptor hashtable.
2748  * - This function checks the virtual block list for correctness. At this point
2749  *   the list should contain one element which describes the whole virtual
2829  * hl_vm_init() - initialize virtual memory module.
2883  * hl_vm_fini() - virtual memory module teardown.
2913  * This function initializes the HW block virtual mapped addresses list and
2926  * This function clears the HW block virtual mapped addresses list and destroys