^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef _ASM_X86_HPET_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _ASM_X86_HPET_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/msi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #ifdef CONFIG_HPET_TIMER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define HPET_MMAP_SIZE 1024
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define HPET_ID 0x000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define HPET_PERIOD 0x004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define HPET_CFG 0x010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define HPET_STATUS 0x020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define HPET_COUNTER 0x0f0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define HPET_Tn_CFG(n) (0x100 + 0x20 * n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define HPET_Tn_CMP(n) (0x108 + 0x20 * n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define HPET_Tn_ROUTE(n) (0x110 + 0x20 * n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define HPET_T0_CFG 0x100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define HPET_T0_CMP 0x108
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define HPET_T0_ROUTE 0x110
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define HPET_T1_CFG 0x120
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define HPET_T1_CMP 0x128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define HPET_T1_ROUTE 0x130
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define HPET_T2_CFG 0x140
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define HPET_T2_CMP 0x148
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define HPET_T2_ROUTE 0x150
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define HPET_ID_REV 0x000000ff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define HPET_ID_NUMBER 0x00001f00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define HPET_ID_64BIT 0x00002000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define HPET_ID_LEGSUP 0x00008000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define HPET_ID_VENDOR 0xffff0000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define HPET_ID_NUMBER_SHIFT 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define HPET_ID_VENDOR_SHIFT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define HPET_CFG_ENABLE 0x001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define HPET_CFG_LEGACY 0x002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define HPET_LEGACY_8254 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define HPET_LEGACY_RTC 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define HPET_TN_LEVEL 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define HPET_TN_ENABLE 0x0004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define HPET_TN_PERIODIC 0x0008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define HPET_TN_PERIODIC_CAP 0x0010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #define HPET_TN_64BIT_CAP 0x0020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define HPET_TN_SETVAL 0x0040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define HPET_TN_32BIT 0x0100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define HPET_TN_ROUTE 0x3e00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define HPET_TN_FSB 0x4000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define HPET_TN_FSB_CAP 0x8000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define HPET_TN_ROUTE_SHIFT 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* Max HPET Period is 10^8 femto sec as in HPET spec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define HPET_MAX_PERIOD 100000000UL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Min HPET period is 10^5 femto sec just for safety. If it is less than this,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #define HPET_MIN_PERIOD 100000UL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /* hpet memory map physical address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) extern unsigned long hpet_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) extern unsigned long force_hpet_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) extern bool boot_hpet_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) extern u8 hpet_blockid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) extern bool hpet_force_user;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) extern bool hpet_msi_disable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) extern int is_hpet_enabled(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) extern int hpet_enable(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) extern void hpet_disable(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) extern unsigned int hpet_readl(unsigned int a);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) extern void force_hpet_resume(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct irq_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct hpet_channel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct irq_domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) extern void hpet_msi_unmask(struct irq_data *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) extern void hpet_msi_mask(struct irq_data *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) extern void hpet_msi_write(struct hpet_channel *hc, struct msi_msg *msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) extern struct irq_domain *hpet_create_irq_domain(int hpet_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) extern int hpet_assign_irq(struct irq_domain *domain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct hpet_channel *hc, int dev_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #ifdef CONFIG_HPET_EMULATE_RTC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) typedef irqreturn_t (*rtc_irq_handler)(int interrupt, void *cookie);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned char sec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) extern int hpet_set_periodic_freq(unsigned long freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) extern int hpet_rtc_dropped_irq(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) extern int hpet_rtc_timer_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) extern int hpet_register_irq_handler(rtc_irq_handler handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) extern void hpet_unregister_irq_handler(rtc_irq_handler handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif /* CONFIG_HPET_EMULATE_RTC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #else /* CONFIG_HPET_TIMER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static inline int hpet_enable(void) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static inline int is_hpet_enabled(void) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) #define hpet_readl(a) 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define default_setup_hpet_msi NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) #endif /* _ASM_X86_HPET_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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