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Blackfin: support smaller uncached DMA chunks for memory constrained systems
[net-next-2.6.git] / arch / blackfin / include / asm / bfin-global.h
CommitLineData
1394f032 1/*
96f1050d 2 * Global extern defines for blackfin
1394f032 3 *
96f1050d 4 * Copyright 2006-2009 Analog Devices Inc.
1394f032 5 *
96f1050d 6 * Licensed under the GPL-2 or later.
1394f032
BW		 7 */
8
9#ifndef _BFIN_GLOBAL_H_
10#define _BFIN_GLOBAL_H_
11
12#ifndef __ASSEMBLY__
13
1394f032
BW		 14#include <linux/linkage.h>
15#include <linux/types.h>
16
86ad7932
CC		 17#if defined(CONFIG_DMA_UNCACHED_4M)
18# define DMA_UNCACHED_REGION (4 * 1024 * 1024)
19#elif defined(CONFIG_DMA_UNCACHED_2M)
1394f032
BW		 20# define DMA_UNCACHED_REGION (2 * 1024 * 1024)
21#elif defined(CONFIG_DMA_UNCACHED_1M)
22# define DMA_UNCACHED_REGION (1024 * 1024)
c45c0659
BS		 23#elif defined(CONFIG_DMA_UNCACHED_512K)
24# define DMA_UNCACHED_REGION (512 * 1024)
25#elif defined(CONFIG_DMA_UNCACHED_256K)
26# define DMA_UNCACHED_REGION (256 * 1024)
27#elif defined(CONFIG_DMA_UNCACHED_128K)
28# define DMA_UNCACHED_REGION (128 * 1024)
1394f032
BW		 29#else
30# define DMA_UNCACHED_REGION (0)
31#endif
32
6b3087c6
GY		 33extern void bfin_setup_caches(unsigned int cpu);
34extern void bfin_setup_cpudata(unsigned int cpu);
35
1394f032
BW		 36extern unsigned long get_cclk(void);
37extern unsigned long get_sclk(void);
2f6cf7bf
MF		 38extern unsigned long sclk_to_usecs(unsigned long sclk);
39extern unsigned long usecs_to_sclk(unsigned long usecs);
1394f032 40
bbc51e97 41struct pt_regs;
49dce912 42extern void dump_bfin_process(struct pt_regs *regs);
b03b08ba 43extern void dump_bfin_mem(struct pt_regs *regs);
1394f032
BW		 44extern void dump_bfin_trace_buffer(void);
45
ee32664d 46/* init functions only */
1394f032 47extern int init_arch_irq(void);
8be80ed3 48extern void init_exception_vectors(void);
1394f032 49extern void program_IAR(void);
ee32664d 50
ee32664d
MF		 51extern asmlinkage void lower_to_irq14(void);
52extern asmlinkage void bfin_return_from_exception(void);
1394f032 53extern asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs);
cfefe3c6 54extern int bfin_internal_set_wake(unsigned int irq, unsigned int state);
1394f032
BW		 55
56extern void *l1_data_A_sram_alloc(size_t);
57extern void *l1_data_B_sram_alloc(size_t);
58extern void *l1_inst_sram_alloc(size_t);
59extern void *l1_data_sram_alloc(size_t);
60extern void *l1_data_sram_zalloc(size_t);
262c3825
SZ		 61extern void *l2_sram_alloc(size_t);
62extern void *l2_sram_zalloc(size_t);
1394f032
BW		 63extern int l1_data_A_sram_free(const void*);
64extern int l1_data_B_sram_free(const void*);
65extern int l1_inst_sram_free(const void*);
66extern int l1_data_sram_free(const void*);
262c3825 67extern int l2_sram_free(const void *);
1394f032
BW		 68extern int sram_free(const void*);
69
70#define L1_INST_SRAM 0x00000001
71#define L1_DATA_A_SRAM 0x00000002
72#define L1_DATA_B_SRAM 0x00000004
73#define L1_DATA_SRAM 0x00000006
262c3825 74#define L2_SRAM 0x00000008
1394f032
BW		 75extern void *sram_alloc_with_lsl(size_t, unsigned long);
76extern int sram_free_with_lsl(const void*);
77
9df10281
RG		 78extern void *isram_memcpy(void *dest, const void *src, size_t n);
79
066954a3 80extern const char bfin_board_name[];
1394f032 81
cfefe3c6 82extern unsigned long bfin_sic_iwr[];
4a88d0ce 83extern unsigned vr_wakeup;
a9c59c27 84extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
1394f032
BW		 85
86#endif
87
88#endif /* _BLACKFIN_H_ */
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