projects / mirror_ubuntu-focal-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 285f5fa7 DW |
2 | #ifndef __ASM_ARCH_MEMORY_H |
| 3 | #define __ASM_ARCH_MEMORY_H | |
| 4 | ||
| a09e64fb | 5 | #include <mach/hardware.h> |
| 285f5fa7 | 6 | |
| 285f5fa7 DW |
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 | ||
| abf2ba15 | 15 | static inline dma_addr_t __virt_to_lbus(void __iomem *x) |
| 1562f98f RK |
16 | { |
| 17 | return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE; | |
| 18 | } | |
| 285f5fa7 | 19 | |
| abf2ba15 | 20 | static inline void __iomem *__lbus_to_virt(dma_addr_t x) |
| 1562f98f RK |
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) | |
| 285f5fa7 DW |
30 | |
| 31 | /* Device is an lbus device if it is on the platform bus of the IOP13XX */ | |
| 1562f98f RK |
32 | #define is_lbus_device(dev) \ |
| 33 | (dev && strncmp(dev->bus->name, "platform", 8) == 0) | |
| 285f5fa7 | 34 | |
| 1562f98f RK |
35 | #define __arch_dma_to_virt(dev, addr) \ |
| 36 | ({ \ | |
| abf2ba15 | 37 | void * __virt; \ |
| 1562f98f RK |
38 | dma_addr_t __dma = addr; \ |
| 39 | if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \ | |
| 40 | __virt = __lbus_to_virt(__dma); \ | |
| 41 | else \ | |
| abf2ba15 AB |
42 | __virt = (void *)__phys_to_virt(__dma); \ |
| 43 | __virt; \ | |
| 1562f98f | 44 | }) |
| 285f5fa7 | 45 | |
| 1562f98f RK |
46 | #define __arch_virt_to_dma(dev, addr) \ |
| 47 | ({ \ | |
| abf2ba15 | 48 | void * __virt = addr; \ |
| 1562f98f RK |
49 | dma_addr_t __dma; \ |
| 50 | if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \ | |
| 51 | __dma = __virt_to_lbus(__virt); \ | |
| 52 | else \ | |
| abf2ba15 | 53 | __dma = __virt_to_phys((unsigned long)__virt); \ |
| 1562f98f RK |
54 | __dma; \ |
| 55 | }) | |
| 285f5fa7 | 56 | |
| 9eedd963 | 57 | #define __arch_pfn_to_dma(dev, pfn) \ |
| 58edb515 NP |
58 | ({ \ |
| 59 | /* __is_lbus_virt() can never be true for RAM pages */ \ | |
| 9eedd963 | 60 | (dma_addr_t)__pfn_to_phys(pfn); \ |
| 58edb515 | 61 | }) |
| 285f5fa7 | 62 | |
| 9eedd963 | 63 | #define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr) |
| ef1baed8 | 64 | |
| 285f5fa7 DW |
65 | #endif /* CONFIG_ARCH_IOP13XX */ |
| 66 | #endif /* !ASSEMBLY */ | |
| 67 | ||
| 285f5fa7 | 68 | #endif |