arch/x86/include/asm/apb_timer.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * apb_timer.h: Driver for Langwell APB timer based on Synopsis DesignWare
   4  *
   5  * (C) Copyright 2009 Intel Corporation
   6  * Author: Jacob Pan (jacob.jun.pan@intel.com)
   7  *
   8  * Note:
   9  */
  10
  11 #ifndef ASM_X86_APBT_H
  12 #define ASM_X86_APBT_H
  13 #include <linux/sfi.h>
  14
  15 #ifdef CONFIG_APB_TIMER
  16
  17 /* default memory mapped register base */
  18 #define LNW_SCU_ADDR           0xFF100000
  19 #define LNW_EXT_TIMER_OFFSET   0x1B800
  20 #define APBT_DEFAULT_BASE      (LNW_SCU_ADDR+LNW_EXT_TIMER_OFFSET)
  21 #define LNW_EXT_TIMER_PGOFFSET         0x800
  22
  23 /* APBT clock speed range from PCLK to fabric base, 25-100MHz */
  24 #define APBT_MAX_FREQ          50000000
  25 #define APBT_MIN_FREQ          1000000
  26 #define APBT_MMAP_SIZE         1024
  27
  28 #define APBT_DEV_USED  1
  29
  30 extern void apbt_time_init(void);
  31 extern unsigned long apbt_quick_calibrate(void);
  32 extern int arch_setup_apbt_irqs(int irq, int trigger, int mask, int cpu);
  33 extern void apbt_setup_secondary_clock(void);
  34
  35 extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint);
  36 extern void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr);
  37 extern int sfi_mtimer_num;
  38
  39 #else /* CONFIG_APB_TIMER */
  40
  41 static inline unsigned long apbt_quick_calibrate(void) {return 0; }
  42 static inline void apbt_time_init(void) { }
  43
  44 #endif
  45 #endif /* ASM_X86_APBT_H */