Release 4.14 arch/arm/mach-iop13xx/include/mach/memory.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ARCH_MEMORY_H

#define __ASM_ARCH_MEMORY_H

#include <mach/hardware.h>

#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(void __iomem *x)
{
	return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
}

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static inline void __iomem *__lbus_to_virt(dma_addr_t x)
{
	return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE;
}

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#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)					\
	({                                                              \
                void * __virt;                                          \
                dma_addr_t __dma = addr;                                \
                if (is_lbus_device(dev) && __is_lbus_dma(__dma))        \
                        __virt = __lbus_to_virt(__dma);                 \
                else                                                    \
                        __virt = (void *)__phys_to_virt(__dma);         \
                __virt;                                                 \
        })


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


#define __arch_pfn_to_dma(dev, pfn)					\
	({                                                              \
		/* __is_lbus_virt() can never be true for RAM pages */	\
                (dma_addr_t)__pfn_to_phys(pfn);                         \
        })


#define __arch_dma_to_pfn(dev, addr)	__phys_to_pfn(addr)

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

#endif
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Directory: arch/arm/mach-iop13xx/include/mach

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