arch/blackfin/include/asm/bfin-global.h

   1 /*
   2  * File:         include/asm-blackfin/bfin-global.h
   3  * Based on:
   4  * Author: *
   5  * Created:
   6  * Description:  Global extern defines for blackfin
   7  *
   8  * Modified:
   9  *               Copyright 2004-2006 Analog Devices Inc.
  10  *
  11  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, see the file COPYING, or write
  25  * to the Free Software Foundation, Inc.,
  26  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  27  */
  28
  29 #ifndef _BFIN_GLOBAL_H_
  30 #define _BFIN_GLOBAL_H_
  31
  32 #ifndef __ASSEMBLY__
  33
  34 #include <asm-generic/sections.h>
  35 #include <asm/ptrace.h>
  36 #include <asm/user.h>
  37 #include <linux/linkage.h>
  38 #include <linux/types.h>
  39
  40 #if defined(CONFIG_DMA_UNCACHED_4M)
  41 # define DMA_UNCACHED_REGION (4 * 1024 * 1024)
  42 #elif defined(CONFIG_DMA_UNCACHED_2M)
  43 # define DMA_UNCACHED_REGION (2 * 1024 * 1024)
  44 #elif defined(CONFIG_DMA_UNCACHED_1M)
  45 # define DMA_UNCACHED_REGION (1024 * 1024)
  46 #else
  47 # define DMA_UNCACHED_REGION (0)
  48 #endif
  49
  50 extern void bfin_setup_caches(unsigned int cpu);
  51 extern void bfin_setup_cpudata(unsigned int cpu);
  52
  53 extern unsigned long get_cclk(void);
  54 extern unsigned long get_sclk(void);
  55 extern unsigned long sclk_to_usecs(unsigned long sclk);
  56 extern unsigned long usecs_to_sclk(unsigned long usecs);
  57
  58 extern void dump_bfin_process(struct pt_regs *regs);
  59 extern void dump_bfin_mem(struct pt_regs *regs);
  60 extern void dump_bfin_trace_buffer(void);
  61
  62 /* init functions only */
  63 extern int init_arch_irq(void);
  64 extern void init_exception_vectors(void);
  65 extern void program_IAR(void);
  66
  67 extern asmlinkage void lower_to_irq14(void);
  68 extern asmlinkage void bfin_return_from_exception(void);
  69 extern asmlinkage void evt14_softirq(void);
  70 extern asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs);
  71 extern int bfin_internal_set_wake(unsigned int irq, unsigned int state);
  72
  73 extern void *l1_data_A_sram_alloc(size_t);
  74 extern void *l1_data_B_sram_alloc(size_t);
  75 extern void *l1_inst_sram_alloc(size_t);
  76 extern void *l1_data_sram_alloc(size_t);
  77 extern void *l1_data_sram_zalloc(size_t);
  78 extern void *l2_sram_alloc(size_t);
  79 extern void *l2_sram_zalloc(size_t);
  80 extern int l1_data_A_sram_free(const void*);
  81 extern int l1_data_B_sram_free(const void*);
  82 extern int l1_inst_sram_free(const void*);
  83 extern int l1_data_sram_free(const void*);
  84 extern int l2_sram_free(const void *);
  85 extern int sram_free(const void*);
  86
  87 #define L1_INST_SRAM            0x00000001
  88 #define L1_DATA_A_SRAM          0x00000002
  89 #define L1_DATA_B_SRAM          0x00000004
  90 #define L1_DATA_SRAM            0x00000006
  91 #define L2_SRAM                 0x00000008
  92 extern void *sram_alloc_with_lsl(size_t, unsigned long);
  93 extern int sram_free_with_lsl(const void*);
  94
  95 extern void *isram_memcpy(void *dest, const void *src, size_t n);
  96
  97 extern const char bfin_board_name[];
  98
  99 extern unsigned long bfin_sic_iwr[];
 100 extern unsigned vr_wakeup;
 101 extern u16 _bfin_swrst; /* shadow for Software Reset Register (SWRST) */
 102 extern unsigned long _ramstart, _ramend, _rambase;
 103 extern unsigned long memory_start, memory_end, physical_mem_end;
 104 extern char _stext_l1[], _etext_l1[], _sdata_l1[], _edata_l1[], _sbss_l1[],
 105         _ebss_l1[], _l1_lma_start[], _sdata_b_l1[], _sbss_b_l1[], _ebss_b_l1[],
 106         _stext_l2[], _etext_l2[], _sdata_l2[], _edata_l2[], _sbss_l2[],
 107         _ebss_l2[], _l2_lma_start[];
 108
 109 /* only used when MTD_UCLINUX */
 110 extern unsigned long memory_mtd_start, memory_mtd_end, mtd_size;
 111
 112 #ifdef CONFIG_BFIN_ICACHE_LOCK
 113 extern void cache_grab_lock(int way);
 114 extern void bfin_cache_lock(int way);
 115 #endif
 116
 117 #endif
 118
 119 #endif                          /* _BLACKFIN_H_ */