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