75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#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 */
|