2009-10-20 08:32:58 +08:00
|
|
|
/*
|
|
|
|
|
* arch/arm/mach-omap1/include/mach/memory.h
|
|
|
|
|
*/
|
|
|
|
|
|
2011-07-06 10:52:52 +08:00
|
|
|
#ifndef __ASM_ARCH_MEMORY_H
|
|
|
|
|
#define __ASM_ARCH_MEMORY_H
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Physical DRAM offset.
|
|
|
|
|
*/
|
|
|
|
|
#define PLAT_PHYS_OFFSET UL(0x10000000)
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* Bus address is physical address, except for OMAP-1510 Local Bus.
|
|
|
|
|
* OMAP-1510 bus address is translated into a Local Bus address if the
|
|
|
|
|
* OMAP bus type is lbus. We do the address translation based on the
|
|
|
|
|
* device overriding the defaults used in the dma-mapping API.
|
|
|
|
|
* Note that the is_lbus_device() test is not very efficient on 1510
|
|
|
|
|
* because of the strncmp().
|
|
|
|
|
*/
|
|
|
|
|
#ifdef CONFIG_ARCH_OMAP15XX
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* OMAP-1510 Local Bus address offset
|
|
|
|
|
*/
|
|
|
|
|
#define OMAP1510_LB_OFFSET UL(0x30000000)
|
|
|
|
|
|
|
|
|
|
#define virt_to_lbus(x) ((x) - PAGE_OFFSET + OMAP1510_LB_OFFSET)
|
|
|
|
|
#define lbus_to_virt(x) ((x) - OMAP1510_LB_OFFSET + PAGE_OFFSET)
|
|
|
|
|
#define is_lbus_device(dev) (cpu_is_omap15xx() && dev && (strncmp(dev_name(dev), "ohci", 4) == 0))
|
|
|
|
|
|
|
|
|
|
#define __arch_pfn_to_dma(dev, pfn) \
|
|
|
|
|
({ dma_addr_t __dma = __pfn_to_phys(pfn); \
|
|
|
|
|
if (is_lbus_device(dev)) \
|
|
|
|
|
__dma = __dma - PHYS_OFFSET + OMAP1510_LB_OFFSET; \
|
|
|
|
|
__dma; })
|
|
|
|
|
|
|
|
|
|
#define __arch_dma_to_pfn(dev, addr) \
|
|
|
|
|
({ dma_addr_t __dma = addr; \
|
|
|
|
|
if (is_lbus_device(dev)) \
|
|
|
|
|
__dma += PHYS_OFFSET - OMAP1510_LB_OFFSET; \
|
|
|
|
|
__phys_to_pfn(__dma); \
|
|
|
|
|
})
|
|
|
|
|
|
|
|
|
|
#define __arch_dma_to_virt(dev, addr) ({ (void *) (is_lbus_device(dev) ? \
|
|
|
|
|
lbus_to_virt(addr) : \
|
|
|
|
|
__phys_to_virt(addr)); })
|
|
|
|
|
|
|
|
|
|
#define __arch_virt_to_dma(dev, addr) ({ unsigned long __addr = (unsigned long)(addr); \
|
|
|
|
|
(dma_addr_t) (is_lbus_device(dev) ? \
|
|
|
|
|
virt_to_lbus(__addr) : \
|
|
|
|
|
__virt_to_phys(__addr)); })
|
|
|
|
|
|
|
|
|
|
#endif /* CONFIG_ARCH_OMAP15XX */
|
|
|
|
|
|
|
|
|
|
#endif
|
