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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [arch-nexuspci/] [dma.h] - Blame information for rev 1633

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/*
 * linux/include/asm-arm/arch-ebsa110/dma.h
 *
 * Architecture DMA routes
 *
 * Copyright (C) 1997.1998 Russell King
 */
#ifndef __ASM_ARCH_DMA_H
#define __ASM_ARCH_DMA_H
 
#ifdef KERNEL_ARCH_DMA
 
static inline void arch_disable_dma (int dmanr)
{
    printk (dma_str, "arch_disable_dma", dmanr);
}
 
static inline void arch_enable_dma (int dmanr)
{
    printk (dma_str, "arch_enable_dma", dmanr);
}
 
static inline void arch_set_dma_addr (int dmanr, unsigned int addr)
{
    printk (dma_str, "arch_set_dma_addr", dmanr);
}
 
static inline void arch_set_dma_count (int dmanr, unsigned int count)
{
    printk (dma_str, "arch_set_dma_count", dmanr);
}
 
static inline void arch_set_dma_mode (int dmanr, char mode)
{
    printk (dma_str, "arch_set_dma_mode", dmanr);
}
 
static inline int arch_dma_count (int dmanr)
{
    printk (dma_str, "arch_dma_count", dmanr);
    return 0;
}
 
#endif
 
/* enable/disable a specific DMA channel */
extern void enable_dma(unsigned int dmanr);
 
static __inline__ void disable_dma(unsigned int dmanr)
{
    printk (dma_str, "disable_dma", dmanr);
}
 
/* Clear the 'DMA Pointer Flip Flop'.
 * Write 0 for LSB/MSB, 1 for MSB/LSB access.
 * Use this once to initialize the FF to a known state.
 * After that, keep track of it. :-)
 * --- In order to do that, the DMA routines below should ---
 * --- only be used while interrupts are disabled! ---
 */
static __inline__ void clear_dma_ff(unsigned int dmanr)
{
    printk (dma_str, "clear_dma_ff", dmanr);
}
 
/* set mode (above) for a specific DMA channel */
extern void set_dma_mode(unsigned int dmanr, char mode);
 
/* Set only the page register bits of the transfer address.
 * This is used for successive transfers when we know the contents of
 * the lower 16 bits of the DMA current address register, but a 64k boundary
 * may have been crossed.
 */
static __inline__ void set_dma_page(unsigned int dmanr, char pagenr)
{
    printk (dma_str, "set_dma_page", dmanr);
}
 
 
/* Set transfer address & page bits for specific DMA channel.
 * Assumes dma flipflop is clear.
 */
extern void set_dma_addr(unsigned int dmanr, unsigned int addr);
 
/* Set transfer size for a specific DMA channel.
 */
extern void set_dma_count(unsigned int dmanr, unsigned int count);
 
/* Get DMA residue count. After a DMA transfer, this
 * should return zero. Reading this while a DMA transfer is
 * still in progress will return unpredictable results.
 * If called before the channel has been used, it may return 1.
 * Otherwise, it returns the number of _bytes_ left to transfer.
 *
 * Assumes DMA flip-flop is clear.
 */
extern int get_dma_residue(unsigned int dmanr);
 
#endif /* _ASM_ARCH_DMA_H */
 

Line No.	Rev	Author	Line
1	1633	jcastillo	`/*`
2			`* linux/include/asm-arm/arch-ebsa110/dma.h`
3			`*`
4			`* Architecture DMA routes`
5			`*`
6			`* Copyright (C) 1997.1998 Russell King`
7			`*/`
8			`#ifndef __ASM_ARCH_DMA_H`
9			`#define __ASM_ARCH_DMA_H`
10
11			`#ifdef KERNEL_ARCH_DMA`
12
13			`static inline void arch_disable_dma (int dmanr)`
14			`{`
15			`printk (dma_str, "arch_disable_dma", dmanr);`
16			`}`
17
18			`static inline void arch_enable_dma (int dmanr)`
19			`{`
20			`printk (dma_str, "arch_enable_dma", dmanr);`
21			`}`
22
23			`static inline void arch_set_dma_addr (int dmanr, unsigned int addr)`
24			`{`
25			`printk (dma_str, "arch_set_dma_addr", dmanr);`
26			`}`
27
28			`static inline void arch_set_dma_count (int dmanr, unsigned int count)`
29			`{`
30			`printk (dma_str, "arch_set_dma_count", dmanr);`
31			`}`
32
33			`static inline void arch_set_dma_mode (int dmanr, char mode)`
34			`{`
35			`printk (dma_str, "arch_set_dma_mode", dmanr);`
36			`}`
37
38			`static inline int arch_dma_count (int dmanr)`
39			`{`
40			`printk (dma_str, "arch_dma_count", dmanr);`
41			`return 0;`
42			`}`
43
44			`#endif`
45
46			`/* enable/disable a specific DMA channel */`
47			`extern void enable_dma(unsigned int dmanr);`
48
49			`static __inline__ void disable_dma(unsigned int dmanr)`
50			`{`
51			`printk (dma_str, "disable_dma", dmanr);`
52			`}`
53
54			`/* Clear the 'DMA Pointer Flip Flop'.`
55			`* Write 0 for LSB/MSB, 1 for MSB/LSB access.`
56			`* Use this once to initialize the FF to a known state.`
57			`* After that, keep track of it. :-)`
58			`* --- In order to do that, the DMA routines below should ---`
59			`* --- only be used while interrupts are disabled! ---`
60			`*/`
61			`static __inline__ void clear_dma_ff(unsigned int dmanr)`
62			`{`
63			`printk (dma_str, "clear_dma_ff", dmanr);`
64			`}`
65
66			`/* set mode (above) for a specific DMA channel */`
67			`extern void set_dma_mode(unsigned int dmanr, char mode);`
68
69			`/* Set only the page register bits of the transfer address.`
70			`* This is used for successive transfers when we know the contents of`
71			`* the lower 16 bits of the DMA current address register, but a 64k boundary`
72			`* may have been crossed.`
73			`*/`
74			`static __inline__ void set_dma_page(unsigned int dmanr, char pagenr)`
75			`{`
76			`printk (dma_str, "set_dma_page", dmanr);`
77			`}`
78
79
80			`/* Set transfer address & page bits for specific DMA channel.`
81			`* Assumes dma flipflop is clear.`
82			`*/`
83			`extern void set_dma_addr(unsigned int dmanr, unsigned int addr);`
84
85			`/* Set transfer size for a specific DMA channel.`
86			`*/`
87			`extern void set_dma_count(unsigned int dmanr, unsigned int count);`
88
89			`/* Get DMA residue count. After a DMA transfer, this`
90			`* should return zero. Reading this while a DMA transfer is`
91			`* still in progress will return unpredictable results.`
92			`* If called before the channel has been used, it may return 1.`
93			`* Otherwise, it returns the number of _bytes_ left to transfer.`
94			`*`
95			`* Assumes DMA flip-flop is clear.`
96			`*/`
97			`extern int get_dma_residue(unsigned int dmanr);`
98
99			`#endif /* _ASM_ARCH_DMA_H */`
100

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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [include/] [asm-armnommu/] [arch-nexuspci/] [dma.h] - Blame information for rev 1633