Logo Search packages:      
Sourcecode: linux version File versions  Download package

memory.h

#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H

#include <mach/hardware.h>

/*
 * Physical DRAM offset.
 */
#define PHYS_OFFSET     UL(0x00000000)

#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)

static inline dma_addr_t __virt_to_lbus(unsigned long x)
{
      return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
}

static inline unsigned long __lbus_to_virt(dma_addr_t x)
{
      return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE;
}

#define __is_lbus_dma(a)                        \
      ((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END)

#define __is_lbus_virt(a)                       \
      ((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END)

/* 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_dma_to_virt(dev, addr)                             \
      ({                                              \
            unsigned long __virt;                           \
            dma_addr_t __dma = addr;                        \
            if (is_lbus_device(dev) && __is_lbus_dma(__dma))      \
                  __virt = __lbus_to_virt(__dma);                 \
            else                                      \
                  __virt = __phys_to_virt(__dma);                 \
            (void *)__virt;                                 \
      })

#define __arch_virt_to_dma(dev, addr)                             \
      ({                                              \
            unsigned long __virt = (unsigned long)addr;           \
            dma_addr_t __dma;                         \
            if (is_lbus_device(dev) && __is_lbus_virt(__virt))    \
                  __dma = __virt_to_lbus(__virt);                 \
            else                                      \
                  __dma = __virt_to_phys(__virt);                 \
            __dma;                                          \
      })

#define __arch_page_to_dma(dev, page)                             \
      ({                                              \
            /* __is_lbus_virt() can never be true for RAM pages */      \
            (dma_addr_t)page_to_phys(page);                       \
      })

#endif /* CONFIG_ARCH_IOP13XX */
#endif /* !ASSEMBLY */

#define PFN_TO_NID(addr)      (0)

#endif

Generated by  Doxygen 1.6.0   Back to index