arch/x86/include/asm/apb_timer.h

   1 /*
   2  * apb_timer.h: Driver for Langwell APB timer based on Synopsis DesignWare
   3  *
   4  * (C) Copyright 2009 Intel Corporation
   5  * Author: Jacob Pan (jacob.jun.pan@intel.com)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; version 2
  10  * of the License.
  11  *
  12  * Note:
  13  */
  14
  15 #ifndef ASM_X86_APBT_H
  16 #define ASM_X86_APBT_H
  17 #include <linux/sfi.h>
  18
  19 #ifdef CONFIG_APB_TIMER
  20
  21 /* default memory mapped register base */
  22 #define LNW_SCU_ADDR           0xFF100000
  23 #define LNW_EXT_TIMER_OFFSET   0x1B800
  24 #define APBT_DEFAULT_BASE      (LNW_SCU_ADDR+LNW_EXT_TIMER_OFFSET)
  25 #define LNW_EXT_TIMER_PGOFFSET         0x800
  26
  27 /* APBT clock speed range from PCLK to fabric base, 25-100MHz */
  28 #define APBT_MAX_FREQ          50000000
  29 #define APBT_MIN_FREQ          1000000
  30 #define APBT_MMAP_SIZE         1024
  31
  32 #define APBT_DEV_USED  1
  33
  34 extern void apbt_time_init(void);
  35 extern unsigned long apbt_quick_calibrate(void);
  36 extern int arch_setup_apbt_irqs(int irq, int trigger, int mask, int cpu);
  37 extern void apbt_setup_secondary_clock(void);
  38
  39 extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint);
  40 extern void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr);
  41 extern int sfi_mtimer_num;
  42
  43 #else /* CONFIG_APB_TIMER */
  44
  45 static inline unsigned long apbt_quick_calibrate(void) {return 0; }
  46 static inline void apbt_time_init(void) { }
  47
  48 #endif
  49 #endif /* ASM_X86_APBT_H */