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Linux/arch/mips/include/asm/hpet.h

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  1 #ifndef _ASM_HPET_H
  2 #define _ASM_HPET_H
  3 
  4 #ifdef CONFIG_RS780_HPET
  5 
  6 #define HPET_MMAP_SIZE          1024
  7 
  8 #define HPET_ID                 0x000
  9 #define HPET_PERIOD             0x004
 10 #define HPET_CFG                0x010
 11 #define HPET_STATUS             0x020
 12 #define HPET_COUNTER    0x0f0
 13 
 14 #define HPET_Tn_CFG(n)          (0x100 + 0x20 * n)
 15 #define HPET_Tn_CMP(n)          (0x108 + 0x20 * n)
 16 #define HPET_Tn_ROUTE(n)        (0x110 + 0x20 * n)
 17 
 18 #define HPET_T0_IRS             0x001
 19 #define HPET_T1_IRS             0x002
 20 #define HPET_T3_IRS             0x004
 21 
 22 #define HPET_T0_CFG             0x100
 23 #define HPET_T0_CMP             0x108
 24 #define HPET_T0_ROUTE   0x110
 25 #define HPET_T1_CFG             0x120
 26 #define HPET_T1_CMP             0x128
 27 #define HPET_T1_ROUTE   0x130
 28 #define HPET_T2_CFG             0x140
 29 #define HPET_T2_CMP             0x148
 30 #define HPET_T2_ROUTE   0x150
 31 
 32 #define HPET_ID_REV                     0x000000ff
 33 #define HPET_ID_NUMBER          0x00001f00
 34 #define HPET_ID_64BIT           0x00002000
 35 #define HPET_ID_LEGSUP          0x00008000
 36 #define HPET_ID_VENDOR          0xffff0000
 37 #define HPET_ID_NUMBER_SHIFT    8
 38 #define HPET_ID_VENDOR_SHIFT    16
 39 
 40 #define HPET_CFG_ENABLE         0x001
 41 #define HPET_CFG_LEGACY         0x002
 42 #define HPET_LEGACY_8254                2
 43 #define HPET_LEGACY_RTC         8
 44 
 45 #define HPET_TN_LEVEL           0x0002
 46 #define HPET_TN_ENABLE          0x0004
 47 #define HPET_TN_PERIODIC        0x0008
 48 #define HPET_TN_PERIODIC_CAP    0x0010
 49 #define HPET_TN_64BIT_CAP       0x0020
 50 #define HPET_TN_SETVAL          0x0040
 51 #define HPET_TN_32BIT           0x0100
 52 #define HPET_TN_ROUTE           0x3e00
 53 #define HPET_TN_FSB                     0x4000
 54 #define HPET_TN_FSB_CAP         0x8000
 55 #define HPET_TN_ROUTE_SHIFT     9
 56 
 57 /* Max HPET Period is 10^8 femto sec as in HPET spec */
 58 #define HPET_MAX_PERIOD         100000000UL
 59 /*
 60  * Min HPET period is 10^5 femto sec just for safety. If it is less than this,
 61  * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
 62  */
 63 #define HPET_MIN_PERIOD         100000UL
 64 
 65 #define HPET_ADDR               0x20000
 66 #define HPET_MMIO_ADDR  0x90000e0000020000
 67 #define HPET_FREQ               14318780
 68 #define HPET_COMPARE_VAL        ((HPET_FREQ + HZ / 2) / HZ)
 69 #define HPET_T0_IRQ             0
 70 
 71 extern void __init setup_hpet_timer(void);
 72 #endif /* CONFIG_RS780_HPET */
 73 #endif /* _ASM_HPET_H */
 74 

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