1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __ASM_ARCH_MEMORY_H 3 #define __ASM_ARCH_MEMORY_H 4 5 #include <mach/hardware.h> 6 7 #ifndef __ASSEMBLY__ 8 9 #if defined(CONFIG_ARCH_IOP13XX) 10 #define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE) 11 #define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE) 12 #define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE) 13 #define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE) 14 __virt_to_lbus(void __iomem * x)15static inline dma_addr_t __virt_to_lbus(void __iomem *x) 16 { 17 return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE; 18 } 19 __lbus_to_virt(dma_addr_t x)20static inline void __iomem *__lbus_to_virt(dma_addr_t x) 21 { 22 return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE; 23 } 24 25 #define __is_lbus_dma(a) \ 26 ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END) 27 28 #define __is_lbus_virt(a) \ 29 ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END) 30 31 /* Device is an lbus device if it is on the platform bus of the IOP13XX */ 32 #define is_lbus_device(dev) \ 33 (dev && strncmp(dev->bus->name, "platform", 8) == 0) 34 35 #define __arch_dma_to_virt(dev, addr) \ 36 ({ \ 37 void * __virt; \ 38 dma_addr_t __dma = addr; \ 39 if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \ 40 __virt = __lbus_to_virt(__dma); \ 41 else \ 42 __virt = (void *)__phys_to_virt(__dma); \ 43 __virt; \ 44 }) 45 46 #define __arch_virt_to_dma(dev, addr) \ 47 ({ \ 48 void * __virt = addr; \ 49 dma_addr_t __dma; \ 50 if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \ 51 __dma = __virt_to_lbus(__virt); \ 52 else \ 53 __dma = __virt_to_phys((unsigned long)__virt); \ 54 __dma; \ 55 }) 56 57 #define __arch_pfn_to_dma(dev, pfn) \ 58 ({ \ 59 /* __is_lbus_virt() can never be true for RAM pages */ \ 60 (dma_addr_t)__pfn_to_phys(pfn); \ 61 }) 62 63 #define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr) 64 65 #endif /* CONFIG_ARCH_IOP13XX */ 66 #endif /* !ASSEMBLY */ 67 68 #endif 69