/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_HPET_H #define _ASM_X86_HPET_H #include <linux/msi.h> #ifdef CONFIG_HPET_TIMER #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_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 /* hpet memory map physical address */ extern unsigned long hpet_address; extern unsigned long force_hpet_address; extern bool boot_hpet_disable; extern u8 hpet_blockid; extern bool hpet_force_user; extern bool hpet_msi_disable; extern int is_hpet_enabled(void); extern int hpet_enable(void); extern void hpet_disable(void); extern unsigned int hpet_readl(unsigned int a); extern void force_hpet_resume(void); struct irq_data; struct hpet_dev; struct irq_domain; extern void hpet_msi_unmask(struct irq_data *data); extern void hpet_msi_mask(struct irq_data *data); extern void hpet_msi_write(struct hpet_dev *hdev, struct msi_msg *msg); extern void hpet_msi_read(struct hpet_dev *hdev, struct msi_msg *msg); extern struct irq_domain *hpet_create_irq_domain(int hpet_id); extern int hpet_assign_irq(struct irq_domain *domain, struct hpet_dev *dev, int dev_num); #ifdef CONFIG_HPET_EMULATE_RTC #include <linux/interrupt.h> typedef irqreturn_t (*rtc_irq_handler)(int interrupt, void *cookie); extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask); extern int hpet_set_rtc_irq_bit(unsigned long bit_mask); extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec); extern int hpet_set_periodic_freq(unsigned long freq); extern int hpet_rtc_dropped_irq(void); extern int hpet_rtc_timer_init(void); extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id); extern int hpet_register_irq_handler(rtc_irq_handler handler); extern void hpet_unregister_irq_handler(rtc_irq_handler handler); #endif /* CONFIG_HPET_EMULATE_RTC */ #else /* CONFIG_HPET_TIMER */
static inline int hpet_enable(void) { return 0; }Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Gleixner | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Ingo Molnar | 12 | 100.00% | 1 | 100.00% |
| Total | 12 | 100.00% | 1 | 100.00% |
| Person | Tokens | Prop | Commits | CommitProp |
| Thomas Gleixner | 302 | 60.76% | 4 | 18.18% |
| Venkatesh Pallipadi | 75 | 15.09% | 5 | 22.73% |
| Jiang Liu | 34 | 6.84% | 1 | 4.55% |
| Bernhard Walle | 31 | 6.24% | 1 | 4.55% |
| Ingo Molnar | 13 | 2.62% | 1 | 4.55% |
| Chris Wright | 8 | 1.61% | 1 | 4.55% |
| Alok N Kataria | 7 | 1.41% | 1 | 4.55% |
| Hirofumi Ogawa | 7 | 1.41% | 1 | 4.55% |
| Jan Beulich | 5 | 1.01% | 2 | 9.09% |
| Joerg Roedel | 4 | 0.80% | 1 | 4.55% |
| Suresh B. Siddha | 4 | 0.80% | 1 | 4.55% |
| H. Peter Anvin | 3 | 0.60% | 1 | 4.55% |
| Feng Tang | 3 | 0.60% | 1 | 4.55% |
| Greg Kroah-Hartman | 1 | 0.20% | 1 | 4.55% |
| Total | 497 | 100.00% | 22 | 100.00% |