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_4M) 18 # define DMA_UNCACHED_REGION (4 * 1024 * 1024) 19 #elif defined(CONFIG_DMA_UNCACHED_2M) 20 # define DMA_UNCACHED_REGION (2 * 1024 * 1024) 21 #elif defined(CONFIG_DMA_UNCACHED_1M) 22 # define DMA_UNCACHED_REGION (1024 * 1024) 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) 29 #else 30 # define DMA_UNCACHED_REGION (0) 31 #endif 32 33 extern void bfin_setup_caches(unsigned int cpu); 34 extern void bfin_setup_cpudata(unsigned int cpu); 35 36 extern unsigned long get_cclk(void); 37 extern unsigned long get_sclk(void); 38 extern unsigned long sclk_to_usecs(unsigned long sclk); 39 extern unsigned long usecs_to_sclk(unsigned long usecs); 40 41 struct pt_regs; 42 #if defined(CONFIG_DEBUG_VERBOSE) 43 extern void dump_bfin_process(struct pt_regs *regs); 44 extern void dump_bfin_mem(struct pt_regs *regs); 45 extern void dump_bfin_trace_buffer(void); 46 #else 47 #define dump_bfin_process(regs) 48 #define dump_bfin_mem(regs) 49 #define dump_bfin_trace_buffer() 50 #endif 51 52 /* init functions only */ 53 extern int init_arch_irq(void); 54 extern void init_exception_vectors(void); 55 extern void program_IAR(void); 56 57 extern asmlinkage void lower_to_irq14(void); 58 extern asmlinkage void bfin_return_from_exception(void); 59 extern asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs); 60 extern int bfin_internal_set_wake(unsigned int irq, unsigned int state); 61 62 extern void *l1_data_A_sram_alloc(size_t); 63 extern void *l1_data_B_sram_alloc(size_t); 64 extern void *l1_inst_sram_alloc(size_t); 65 extern void *l1_data_sram_alloc(size_t); 66 extern void *l1_data_sram_zalloc(size_t); 67 extern void *l2_sram_alloc(size_t); 68 extern void *l2_sram_zalloc(size_t); 69 extern int l1_data_A_sram_free(const void*); 70 extern int l1_data_B_sram_free(const void*); 71 extern int l1_inst_sram_free(const void*); 72 extern int l1_data_sram_free(const void*); 73 extern int l2_sram_free(const void *); 74 extern int sram_free(const void*); 75 76 #define L1_INST_SRAM 0x00000001 77 #define L1_DATA_A_SRAM 0x00000002 78 #define L1_DATA_B_SRAM 0x00000004 79 #define L1_DATA_SRAM 0x00000006 80 #define L2_SRAM 0x00000008 81 extern void *sram_alloc_with_lsl(size_t, unsigned long); 82 extern int sram_free_with_lsl(const void*); 83 84 extern void *isram_memcpy(void *dest, const void *src, size_t n); 85 86 extern const char bfin_board_name[]; 87 88 extern unsigned long bfin_sic_iwr[]; 89 extern unsigned vr_wakeup; 90 extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */ 91 92 #endif 93 94 #endif /* _BLACKFIN_H_ */ 95