Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 1 | #ifndef __ASM_ARCH_MEMORY_H |
| 2 | #define __ASM_ARCH_MEMORY_H |
| 3 | |
| 4 | #include <mach/hardware.h> |
| 5 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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 | |
Arnd Bergmann | abf2ba1 | 2012-09-14 20:17:50 +0000 | [diff] [blame] | 14 | static inline dma_addr_t __virt_to_lbus(void __iomem *x) |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 15 | { |
| 16 | return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE; |
| 17 | } |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 18 | |
Arnd Bergmann | abf2ba1 | 2012-09-14 20:17:50 +0000 | [diff] [blame] | 19 | static inline void __iomem *__lbus_to_virt(dma_addr_t x) |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 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) |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 29 | |
| 30 | /* Device is an lbus device if it is on the platform bus of the IOP13XX */ |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 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 | ({ \ |
Arnd Bergmann | abf2ba1 | 2012-09-14 20:17:50 +0000 | [diff] [blame] | 36 | void * __virt; \ |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 37 | dma_addr_t __dma = addr; \ |
| 38 | if (is_lbus_device(dev) && __is_lbus_dma(__dma)) \ |
| 39 | __virt = __lbus_to_virt(__dma); \ |
| 40 | else \ |
Arnd Bergmann | abf2ba1 | 2012-09-14 20:17:50 +0000 | [diff] [blame] | 41 | __virt = (void *)__phys_to_virt(__dma); \ |
| 42 | __virt; \ |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 43 | }) |
| 44 | |
| 45 | #define __arch_virt_to_dma(dev, addr) \ |
| 46 | ({ \ |
Arnd Bergmann | abf2ba1 | 2012-09-14 20:17:50 +0000 | [diff] [blame] | 47 | void * __virt = addr; \ |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 48 | dma_addr_t __dma; \ |
| 49 | if (is_lbus_device(dev) && __is_lbus_virt(__virt)) \ |
| 50 | __dma = __virt_to_lbus(__virt); \ |
| 51 | else \ |
Arnd Bergmann | abf2ba1 | 2012-09-14 20:17:50 +0000 | [diff] [blame] | 52 | __dma = __virt_to_phys((unsigned long)__virt); \ |
Russell King | 1562f98 | 2008-09-17 20:36:49 +0100 | [diff] [blame] | 53 | __dma; \ |
| 54 | }) |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 55 | |
Russell King | 9eedd96 | 2011-01-03 00:00:17 +0000 | [diff] [blame] | 56 | #define __arch_pfn_to_dma(dev, pfn) \ |
Nicolas Pitre | 58edb51 | 2008-09-09 15:54:13 -0400 | [diff] [blame] | 57 | ({ \ |
| 58 | /* __is_lbus_virt() can never be true for RAM pages */ \ |
Russell King | 9eedd96 | 2011-01-03 00:00:17 +0000 | [diff] [blame] | 59 | (dma_addr_t)__pfn_to_phys(pfn); \ |
Nicolas Pitre | 58edb51 | 2008-09-09 15:54:13 -0400 | [diff] [blame] | 60 | }) |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 61 | |
Russell King | 9eedd96 | 2011-01-03 00:00:17 +0000 | [diff] [blame] | 62 | #define __arch_dma_to_pfn(dev, addr) __phys_to_pfn(addr) |
Russell King | ef1baed | 2009-10-31 16:07:16 +0000 | [diff] [blame] | 63 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 64 | #endif /* CONFIG_ARCH_IOP13XX */ |
| 65 | #endif /* !ASSEMBLY */ |
| 66 | |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 67 | #endif |