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1 /*
2  * Global extern defines for blackfin
3  *
4  * Copyright 2006-2009 Analog Devices Inc.
5  *
6  * Licensed under the GPL-2 or later.
7  */
8 
9 #ifndef _BFIN_GLOBAL_H_
10 #define _BFIN_GLOBAL_H_
11 
12 #ifndef __ASSEMBLY__
13 
14 #include <linux/linkage.h>
15 #include <linux/types.h>
16 
17 #if defined(CONFIG_DMA_UNCACHED_32M)
18 # define DMA_UNCACHED_REGION (32 * 1024 * 1024)
19 #elif defined(CONFIG_DMA_UNCACHED_16M)
20 # define DMA_UNCACHED_REGION (16 * 1024 * 1024)
21 #elif defined(CONFIG_DMA_UNCACHED_8M)
22 # define DMA_UNCACHED_REGION (8 * 1024 * 1024)
23 #elif defined(CONFIG_DMA_UNCACHED_4M)
24 # define DMA_UNCACHED_REGION (4 * 1024 * 1024)
25 #elif defined(CONFIG_DMA_UNCACHED_2M)
26 # define DMA_UNCACHED_REGION (2 * 1024 * 1024)
27 #elif defined(CONFIG_DMA_UNCACHED_1M)
28 # define DMA_UNCACHED_REGION (1024 * 1024)
29 #elif defined(CONFIG_DMA_UNCACHED_512K)
30 # define DMA_UNCACHED_REGION (512 * 1024)
31 #elif defined(CONFIG_DMA_UNCACHED_256K)
32 # define DMA_UNCACHED_REGION (256 * 1024)
33 #elif defined(CONFIG_DMA_UNCACHED_128K)
34 # define DMA_UNCACHED_REGION (128 * 1024)
35 #else
36 # define DMA_UNCACHED_REGION (0)
37 #endif
38 
39 extern void bfin_setup_caches(unsigned int cpu);
40 extern void bfin_setup_cpudata(unsigned int cpu);
41 
42 extern unsigned long get_cclk(void);
43 extern unsigned long get_sclk(void);
44 #ifdef CONFIG_BF60x
45 extern unsigned long get_sclk0(void);
46 extern unsigned long get_sclk1(void);
47 extern unsigned long get_dclk(void);
48 #endif
49 extern unsigned long sclk_to_usecs(unsigned long sclk);
50 extern unsigned long usecs_to_sclk(unsigned long usecs);
51 
52 struct pt_regs;
53 #if defined(CONFIG_DEBUG_VERBOSE)
54 extern void dump_bfin_process(struct pt_regs *regs);
55 extern void dump_bfin_mem(struct pt_regs *regs);
56 extern void dump_bfin_trace_buffer(void);
57 #else
58 #define dump_bfin_process(regs)
59 #define dump_bfin_mem(regs)
60 #define dump_bfin_trace_buffer()
61 #endif
62 
63 extern void *l1_data_A_sram_alloc(size_t);
64 extern void *l1_data_B_sram_alloc(size_t);
65 extern void *l1_inst_sram_alloc(size_t);
66 extern void *l1_data_sram_alloc(size_t);
67 extern void *l1_data_sram_zalloc(size_t);
68 extern void *l2_sram_alloc(size_t);
69 extern void *l2_sram_zalloc(size_t);
70 extern int l1_data_A_sram_free(const void*);
71 extern int l1_data_B_sram_free(const void*);
72 extern int l1_inst_sram_free(const void*);
73 extern int l1_data_sram_free(const void*);
74 extern int l2_sram_free(const void *);
75 extern int sram_free(const void*);
76 
77 #define L1_INST_SRAM		0x00000001
78 #define L1_DATA_A_SRAM		0x00000002
79 #define L1_DATA_B_SRAM		0x00000004
80 #define L1_DATA_SRAM		0x00000006
81 #define L2_SRAM			0x00000008
82 extern void *sram_alloc_with_lsl(size_t, unsigned long);
83 extern int sram_free_with_lsl(const void*);
84 
85 extern void *isram_memcpy(void *dest, const void *src, size_t n);
86 
87 extern const char bfin_board_name[];
88 
89 extern unsigned long bfin_sic_iwr[];
90 extern unsigned vr_wakeup;
91 extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
92 
93 #endif
94 
95 #endif				/* _BLACKFIN_H_ */
96