65 строки
2.1 KiB
C
65 строки
2.1 KiB
C
|
#ifndef __ASM_ARCH_MEMORY_H
|
||
|
|
#define __ASM_ARCH_MEMORY_H
|
||
|
|
|
||
|
|
#include <asm/arch/hardware.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Physical DRAM offset.
|
||
|
|
*/
|
||
|
|
#define PHYS_OFFSET UL(0x00000000)
|
||
|
|
#define TASK_SIZE UL(0x3f000000)
|
||
|
|
#define PAGE_OFFSET UL(0x40000000)
|
||
|
|
#define TASK_UNMAPPED_BASE ((TASK_SIZE + 0x01000000) / 3)
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#if defined(CONFIG_ARCH_IOP13XX)
|
||
|
|
#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
|
||
|
|
#define IOP13XX_PMMR_V_END (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
|
||
|
|
#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
|
||
|
|
#define IOP13XX_PMMR_P_END (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Virtual view <-> PCI DMA view memory address translations
|
||
|
|
* virt_to_bus: Used to translate the virtual address to an
|
||
|
|
* address suitable to be passed to set_dma_addr
|
||
|
|
* bus_to_virt: Used to convert an address for DMA operations
|
||
|
|
* to an address that the kernel can use.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* RAM has 1:1 mapping on the PCIe/x Busses */
|
||
|
|
#define __virt_to_bus(x) (__virt_to_phys(x))
|
||
|
|
#define __bus_to_virt(x) (__phys_to_virt(x))
|
||
|
|
|
||
|
|
#define virt_to_lbus(x) \
|
||
|
|
(( ((void*)(x) >= (void*)IOP13XX_PMMR_V_START) && \
|
||
|
|
((void*)(x) < (void*)IOP13XX_PMMR_V_END) ) ? \
|
||
|
|
((x) - IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_PHYS_MEM_BASE) : \
|
||
|
|
((x) - PAGE_OFFSET + PHYS_OFFSET))
|
||
|
|
|
||
|
|
#define lbus_to_virt(x) \
|
||
|
|
(( ((x) >= IOP13XX_PMMR_P_START) && ((x) < IOP13XX_PMMR_P_END) ) ? \
|
||
|
|
((x) - IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_VIRT_MEM_BASE ) : \
|
||
|
|
((x) - PHYS_OFFSET + PAGE_OFFSET))
|
||
|
|
|
||
|
|
/* Device is an lbus device if it is on the platform bus of the IOP13XX */
|
||
|
|
#define is_lbus_device(dev) (dev &&\
|
||
|
|
(strncmp(dev->bus->name, "platform", 8) == 0))
|
||
|
|
|
||
|
|
#define __arch_page_to_dma(dev, page) \
|
||
|
|
({is_lbus_device(dev) ? (dma_addr_t)virt_to_lbus(page_address(page)) : \
|
||
|
|
(dma_addr_t)__virt_to_bus(page_address(page));})
|
||
|
|
|
||
|
|
#define __arch_dma_to_virt(dev, addr) \
|
||
|
|
({is_lbus_device(dev) ? lbus_to_virt(addr) : __bus_to_virt(addr);})
|
||
|
|
|
||
|
|
#define __arch_virt_to_dma(dev, addr) \
|
||
|
|
({is_lbus_device(dev) ? virt_to_lbus(addr) : __virt_to_bus(addr);})
|
||
|
|
|
||
|
|
#endif /* CONFIG_ARCH_IOP13XX */
|
||
|
|
#endif /* !ASSEMBLY */
|
||
|
|
|
||
|
|
#define PFN_TO_NID(addr) (0)
|
||
|
|
|
||
|
|
#endif
|