1 #ifndef __ASM_ARCH_MEMORY_H 2 #define __ASM_ARCH_MEMORY_H 3 4 #include <mach/hardware.h> 5 6 /* 7 * Physical DRAM offset. 8 */ 9 #define PLAT_PHYS_OFFSET UL(0x00000000) 10 11 #ifndef __ASSEMBLY__ 12 13 #if defined(CONFIG_ARCH_IOP13XX) 14 #define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE) 15 #define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE) 16 #define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE) 17 #define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE) 18 __virt_to_lbus(void __iomem * x)19static inline dma_addr_t __virt_to_lbus(void __iomem *x) 20 { 21 return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE; 22 } 23 __lbus_to_virt(dma_addr_t x)24static inline void __iomem *__lbus_to_virt(dma_addr_t x) 25 { 26 return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE; 27 } 28 29 #define __is_lbus_dma(a) \ 30 ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END) 31 32 #define __is_lbus_virt(a) \ 33 ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END) 34 35 /* Device is an lbus device if it is on the platform bus of the IOP13XX */ 36 #define is_lbus_device(dev) \ 37 (dev && strncmp(dev->bus->name, "platform", 8) == 0) 38 39 #define __arch_dma_to_virt(dev, addr) \ 40 ({ \ 41 void * __virt; \ 42 dma_addr_t __dma = addr; \ 43 if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \ 44 __virt = __lbus_to_virt(__dma); \ 45 else \ 46 __virt = (void *)__phys_to_virt(__dma); \ 47 __virt; \ 48 }) 49 50 #define __arch_virt_to_dma(dev, addr) \ 51 ({ \ 52 void * __virt = addr; \ 53 dma_addr_t __dma; \ 54 if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \ 55 __dma = __virt_to_lbus(__virt); \ 56 else \ 57 __dma = __virt_to_phys((unsigned long)__virt); \ 58 __dma; \ 59 }) 60 61 #define __arch_pfn_to_dma(dev, pfn) \ 62 ({ \ 63 /* __is_lbus_virt() can never be true for RAM pages */ \ 64 (dma_addr_t)__pfn_to_phys(pfn); \ 65 }) 66 67 #define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr) 68 69 #endif /* CONFIG_ARCH_IOP13XX */ 70 #endif /* !ASSEMBLY */ 71 72 #endif 73