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kernel/linux-rt-4.4.41/arch/x86/include/asm/apb_timer.h 1.43 KB
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  /*
   * apb_timer.h: Driver for Langwell APB timer based on Synopsis DesignWare
   *
   * (C) Copyright 2009 Intel Corporation
   * Author: Jacob Pan (jacob.jun.pan@intel.com)
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; version 2
   * of the License.
   *
   * Note:
   */
  
  #ifndef ASM_X86_APBT_H
  #define ASM_X86_APBT_H
  #include <linux/sfi.h>
  
  #ifdef CONFIG_APB_TIMER
  
  /* default memory mapped register base */
  #define LNW_SCU_ADDR           0xFF100000
  #define LNW_EXT_TIMER_OFFSET   0x1B800
  #define APBT_DEFAULT_BASE      (LNW_SCU_ADDR+LNW_EXT_TIMER_OFFSET)
  #define LNW_EXT_TIMER_PGOFFSET         0x800
  
  /* APBT clock speed range from PCLK to fabric base, 25-100MHz */
  #define APBT_MAX_FREQ          50000000
  #define APBT_MIN_FREQ          1000000
  #define APBT_MMAP_SIZE         1024
  
  #define APBT_DEV_USED  1
  
  extern void apbt_time_init(void);
  extern unsigned long apbt_quick_calibrate(void);
  extern int arch_setup_apbt_irqs(int irq, int trigger, int mask, int cpu);
  extern void apbt_setup_secondary_clock(void);
  
  extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint);
  extern void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr);
  extern int sfi_mtimer_num;
  
  #else /* CONFIG_APB_TIMER */
  
  static inline unsigned long apbt_quick_calibrate(void) {return 0; }
  static inline void apbt_time_init(void) { }
  
  #endif
  #endif /* ASM_X86_APBT_H */