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 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 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