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kernel/linux-rt-4.4.41/arch/mips/include/asm/hpet.h 1.89 KB
5113f6f70   김현기   kernel add
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  #ifndef _ASM_HPET_H
  #define _ASM_HPET_H
  
  #ifdef CONFIG_RS780_HPET
  
  #define HPET_MMAP_SIZE		1024
  
  #define HPET_ID			0x000
  #define HPET_PERIOD		0x004
  #define HPET_CFG		0x010
  #define HPET_STATUS		0x020
  #define HPET_COUNTER	0x0f0
  
  #define HPET_Tn_CFG(n)		(0x100 + 0x20 * n)
  #define HPET_Tn_CMP(n)		(0x108 + 0x20 * n)
  #define HPET_Tn_ROUTE(n)	(0x110 + 0x20 * n)
  
  #define HPET_T0_IRS		0x001
  #define HPET_T1_IRS		0x002
  #define HPET_T3_IRS		0x004
  
  #define HPET_T0_CFG		0x100
  #define HPET_T0_CMP		0x108
  #define HPET_T0_ROUTE	0x110
  #define HPET_T1_CFG		0x120
  #define HPET_T1_CMP		0x128
  #define HPET_T1_ROUTE	0x130
  #define HPET_T2_CFG		0x140
  #define HPET_T2_CMP		0x148
  #define HPET_T2_ROUTE	0x150
  
  #define HPET_ID_REV			0x000000ff
  #define HPET_ID_NUMBER		0x00001f00
  #define HPET_ID_64BIT		0x00002000
  #define HPET_ID_LEGSUP		0x00008000
  #define HPET_ID_VENDOR		0xffff0000
  #define HPET_ID_NUMBER_SHIFT	8
  #define HPET_ID_VENDOR_SHIFT	16
  
  #define HPET_CFG_ENABLE		0x001
  #define HPET_CFG_LEGACY		0x002
  #define HPET_LEGACY_8254		2
  #define HPET_LEGACY_RTC		8
  
  #define HPET_TN_LEVEL		0x0002
  #define HPET_TN_ENABLE		0x0004
  #define HPET_TN_PERIODIC	0x0008
  #define HPET_TN_PERIODIC_CAP	0x0010
  #define HPET_TN_64BIT_CAP	0x0020
  #define HPET_TN_SETVAL		0x0040
  #define HPET_TN_32BIT		0x0100
  #define HPET_TN_ROUTE		0x3e00
  #define HPET_TN_FSB			0x4000
  #define HPET_TN_FSB_CAP		0x8000
  #define HPET_TN_ROUTE_SHIFT	9
  
  /* Max HPET Period is 10^8 femto sec as in HPET spec */
  #define HPET_MAX_PERIOD		100000000UL
  /*
   * Min HPET period is 10^5 femto sec just for safety. If it is less than this,
   * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
   */
  #define HPET_MIN_PERIOD		100000UL
  
  #define HPET_ADDR		0x20000
  #define HPET_MMIO_ADDR	0x90000e0000020000
  #define HPET_FREQ		14318780
  #define HPET_COMPARE_VAL	((HPET_FREQ + HZ / 2) / HZ)
  #define HPET_T0_IRQ		0
  
  extern void __init setup_hpet_timer(void);
  #endif /* CONFIG_RS780_HPET */
  #endif /* _ASM_HPET_H */