projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 9a88cbb5 RB |
1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public | |
| 3 | * License. See the file "COPYING" in the main directory of this archive | |
| 4 | * for more details. | |
| 5 | * | |
| 6 | * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org> | |
| 7 | * | |
| 8 | */ | |
| 9 | #ifndef __ASM_MACH_IP27_DMA_COHERENCE_H | |
| 10 | #define __ASM_MACH_IP27_DMA_COHERENCE_H | |
| 11 | ||
| 12 | #include <asm/pci/bridge.h> | |
| 13 | ||
| 14 | #define pdev_to_baddr(pdev, addr) \ | |
| 15 | (BRIDGE_CONTROLLER(pdev->bus)->baddr + (addr)) | |
| 16 | #define dev_to_baddr(dev, addr) \ | |
| 17 | pdev_to_baddr(to_pci_dev(dev), (addr)) | |
| 18 | ||
| 19 | struct device; | |
| 20 | ||
| 21 | static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size) | |
| 22 | { | |
| 23 | dma_addr_t pa = dev_to_baddr(dev, virt_to_phys(addr)); | |
| 24 | ||
| 25 | return pa; | |
| 26 | } | |
| 27 | ||
| 28 | static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) | |
| 29 | { | |
| 30 | dma_addr_t pa = dev_to_baddr(dev, page_to_phys(page)); | |
| 31 | ||
| 32 | return pa; | |
| 33 | } | |
| 34 | ||
| 35 | static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) | |
| 36 | { | |
| 37 | return dma_addr & (0xffUL << 56); | |
| 38 | } | |
| 39 | ||
| 40 | static void plat_unmap_dma_mem(dma_addr_t dma_addr) | |
| 41 | { | |
| 42 | } | |
| 43 | ||
| 44 | static inline int plat_device_is_coherent(struct device *dev) | |
| 45 | { | |
| 46 | return 1; /* IP27 non-cohernet mode is unsupported */ | |
| 47 | } | |
| 48 | ||
| 49 | #endif /* __ASM_MACH_IP27_DMA_COHERENCE_H */ |