1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_ARCH_MEMORY_H
 3#define __ASM_ARCH_MEMORY_H
 4
 5#include <mach/hardware.h>
 6
 7#ifndef __ASSEMBLY__
 8
 9#if defined(CONFIG_ARCH_IOP13XX)
10#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
11#define IOP13XX_PMMR_V_END   (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
12#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
13#define IOP13XX_PMMR_P_END   (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
14
15static inline dma_addr_t __virt_to_lbus(void __iomem *x)
16{
17	return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
18}
19
20static inline void __iomem *__lbus_to_virt(dma_addr_t x)
21{
22	return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE;
23}
24
25#define __is_lbus_dma(a)				\
26	((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END)
27
28#define __is_lbus_virt(a)				\
29	((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END)
30
31/* Device is an lbus device if it is on the platform bus of the IOP13XX */
32#define is_lbus_device(dev) 				\
33	(dev && strncmp(dev->bus->name, "platform", 8) == 0)
34
35#define __arch_dma_to_virt(dev, addr)					\
36	({								\
37		void * __virt;						\
38		dma_addr_t __dma = addr;				\
39		if (is_lbus_device(dev) && __is_lbus_dma(__dma))	\
40			__virt = __lbus_to_virt(__dma);			\
41		else							\
42			__virt = (void *)__phys_to_virt(__dma);		\
43		__virt;							\
44	})
45
46#define __arch_virt_to_dma(dev, addr)					\
47	({								\
48		void * __virt = addr;					\
49		dma_addr_t __dma;					\
50		if (is_lbus_device(dev) && __is_lbus_virt(__virt))	\
51			__dma = __virt_to_lbus(__virt);			\
52		else							\
53			__dma = __virt_to_phys((unsigned long)__virt);	\
54		__dma;							\
55	})
56
57#define __arch_pfn_to_dma(dev, pfn)					\
58	({								\
59		/* __is_lbus_virt() can never be true for RAM pages */	\
60		(dma_addr_t)__pfn_to_phys(pfn);				\
61	})
62
63#define __arch_dma_to_pfn(dev, addr)	__phys_to_pfn(addr)
64
65#endif /* CONFIG_ARCH_IOP13XX */
66#endif /* !ASSEMBLY */
67
68#endif

 1#ifndef __ASM_ARCH_MEMORY_H
 2#define __ASM_ARCH_MEMORY_H
 3
 4#include <mach/hardware.h>
 5
 6/*
 7 * Physical DRAM offset.
 8 */
 9#define PLAT_PHYS_OFFSET	UL(0x00000000)
10
11#ifndef __ASSEMBLY__
12
13#if defined(CONFIG_ARCH_IOP13XX)
14#define IOP13XX_PMMR_V_START (IOP13XX_PMMR_VIRT_MEM_BASE)
15#define IOP13XX_PMMR_V_END   (IOP13XX_PMMR_VIRT_MEM_BASE + IOP13XX_PMMR_SIZE)
16#define IOP13XX_PMMR_P_START (IOP13XX_PMMR_PHYS_MEM_BASE)
17#define IOP13XX_PMMR_P_END   (IOP13XX_PMMR_PHYS_MEM_BASE + IOP13XX_PMMR_SIZE)
18
19static inline dma_addr_t __virt_to_lbus(void __iomem *x)
20{
21	return x + IOP13XX_PMMR_PHYS_MEM_BASE - IOP13XX_PMMR_VIRT_MEM_BASE;
22}
23
24static inline void __iomem *__lbus_to_virt(dma_addr_t x)
25{
26	return x + IOP13XX_PMMR_VIRT_MEM_BASE - IOP13XX_PMMR_PHYS_MEM_BASE;
27}
28
29#define __is_lbus_dma(a)				\
30	((a) >= IOP13XX_PMMR_P_START && (a) < IOP13XX_PMMR_P_END)
31
32#define __is_lbus_virt(a)				\
33	((a) >= IOP13XX_PMMR_V_START && (a) < IOP13XX_PMMR_V_END)
34
35/* Device is an lbus device if it is on the platform bus of the IOP13XX */
36#define is_lbus_device(dev) 				\
37	(dev && strncmp(dev->bus->name, "platform", 8) == 0)
38
39#define __arch_dma_to_virt(dev, addr)					\
40	({								\
41		void * __virt;						\
42		dma_addr_t __dma = addr;				\
43		if (is_lbus_device(dev) && __is_lbus_dma(__dma))	\
44			__virt = __lbus_to_virt(__dma);			\
45		else							\
46			__virt = (void *)__phys_to_virt(__dma);		\
47		__virt;							\
48	})
49
50#define __arch_virt_to_dma(dev, addr)					\
51	({								\
52		void * __virt = addr;					\
53		dma_addr_t __dma;					\
54		if (is_lbus_device(dev) && __is_lbus_virt(__virt))	\
55			__dma = __virt_to_lbus(__virt);			\
56		else							\
57			__dma = __virt_to_phys((unsigned long)__virt);	\
58		__dma;							\
59	})
60
61#define __arch_pfn_to_dma(dev, pfn)					\
62	({								\
63		/* __is_lbus_virt() can never be true for RAM pages */	\
64		(dma_addr_t)__pfn_to_phys(pfn);				\
65	})
66
67#define __arch_dma_to_pfn(dev, addr)	__phys_to_pfn(addr)
68
69#endif /* CONFIG_ARCH_IOP13XX */
70#endif /* !ASSEMBLY */
71
72#endif