Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2004 - 2007  Paul Mundt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/dma-map-ops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <asm/cacheflush.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <asm/addrspace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) void arch_dma_prep_coherent(struct page *page, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	__flush_purge_region(page_address(page), size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) void arch_sync_dma_for_device(phys_addr_t paddr, size_t size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 		enum dma_data_direction dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	void *addr = sh_cacheop_vaddr(phys_to_virt(paddr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	switch (dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	case DMA_FROM_DEVICE:		/* invalidate only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		__flush_invalidate_region(addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	case DMA_TO_DEVICE:		/* writeback only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		__flush_wback_region(addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	case DMA_BIDIRECTIONAL:		/* writeback and invalidate */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		__flush_purge_region(addr, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }