arch/mips/include/asm/hpet.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_HPET_H
   3 #define _ASM_HPET_H
   4
   5 #ifdef CONFIG_RS780_HPET
   6
   7 #define HPET_MMAP_SIZE          1024
   8
   9 #define HPET_ID                 0x000
  10 #define HPET_PERIOD             0x004
  11 #define HPET_CFG                0x010
  12 #define HPET_STATUS             0x020
  13 #define HPET_COUNTER    0x0f0
  14
  15 #define HPET_Tn_CFG(n)          (0x100 + 0x20 * n)
  16 #define HPET_Tn_CMP(n)          (0x108 + 0x20 * n)
  17 #define HPET_Tn_ROUTE(n)        (0x110 + 0x20 * n)
  18
  19 #define HPET_T0_IRS             0x001
  20 #define HPET_T1_IRS             0x002
  21 #define HPET_T3_IRS             0x004
  22
  23 #define HPET_T0_CFG             0x100
  24 #define HPET_T0_CMP             0x108
  25 #define HPET_T0_ROUTE   0x110
  26 #define HPET_T1_CFG             0x120
  27 #define HPET_T1_CMP             0x128
  28 #define HPET_T1_ROUTE   0x130
  29 #define HPET_T2_CFG             0x140
  30 #define HPET_T2_CMP             0x148
  31 #define HPET_T2_ROUTE   0x150
  32
  33 #define HPET_ID_REV                     0x000000ff
  34 #define HPET_ID_NUMBER          0x00001f00
  35 #define HPET_ID_64BIT           0x00002000
  36 #define HPET_ID_LEGSUP          0x00008000
  37 #define HPET_ID_VENDOR          0xffff0000
  38 #define HPET_ID_NUMBER_SHIFT    8
  39 #define HPET_ID_VENDOR_SHIFT    16
  40
  41 #define HPET_CFG_ENABLE         0x001
  42 #define HPET_CFG_LEGACY         0x002
  43 #define HPET_LEGACY_8254                2
  44 #define HPET_LEGACY_RTC         8
  45
  46 #define HPET_TN_LEVEL           0x0002
  47 #define HPET_TN_ENABLE          0x0004
  48 #define HPET_TN_PERIODIC        0x0008
  49 #define HPET_TN_PERIODIC_CAP    0x0010
  50 #define HPET_TN_64BIT_CAP       0x0020
  51 #define HPET_TN_SETVAL          0x0040
  52 #define HPET_TN_32BIT           0x0100
  53 #define HPET_TN_ROUTE           0x3e00
  54 #define HPET_TN_FSB                     0x4000
  55 #define HPET_TN_FSB_CAP         0x8000
  56 #define HPET_TN_ROUTE_SHIFT     9
  57
  58 /* Max HPET Period is 10^8 femto sec as in HPET spec */
  59 #define HPET_MAX_PERIOD         100000000UL
  60 /*
  61  * Min HPET period is 10^5 femto sec just for safety. If it is less than this,
  62  * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
  63  */
  64 #define HPET_MIN_PERIOD         100000UL
  65
  66 #define HPET_ADDR               0x20000
  67 #define HPET_MMIO_ADDR  0x90000e0000020000
  68 #define HPET_FREQ               14318780
  69 #define HPET_COMPARE_VAL        ((HPET_FREQ + HZ / 2) / HZ)
  70 #define HPET_T0_IRQ             0
  71
  72 extern void __init setup_hpet_timer(void);
  73 #endif /* CONFIG_RS780_HPET */
  74 #endif /* _ASM_HPET_H */