Orange Pi5 kernel

^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 __I8254_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __I8254_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/kthread.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <kvm/iodev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) struct kvm_kpit_channel_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	u32 count; /* can be 65536 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	u16 latched_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	u8 count_latched;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	u8 status_latched;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	u8 status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	u8 read_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	u8 write_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	u8 write_latch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	u8 rw_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	u8 mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	u8 bcd; /* not supported */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	u8 gate; /* timer start */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	ktime_t count_load_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct kvm_kpit_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	/* All members before "struct mutex lock" are protected by the lock. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct kvm_kpit_channel_state channels[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	bool is_periodic;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	s64 period; 				/* unit: ns */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	struct hrtimer timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	u32    speaker_data_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	atomic_t reinject;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	atomic_t pending; /* accumulated triggered timers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	atomic_t irq_ack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct kvm_irq_ack_notifier irq_ack_notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct kvm_pit {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct kvm_io_device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	struct kvm_io_device speaker_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct kvm *kvm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	struct kvm_kpit_state pit_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	int irq_source_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	struct kvm_irq_mask_notifier mask_notifier;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	struct kthread_worker *worker;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	struct kthread_work expired;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define KVM_PIT_BASE_ADDRESS	    0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define KVM_SPEAKER_BASE_ADDRESS    0x61
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define KVM_PIT_MEM_LENGTH	    4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #define KVM_PIT_FREQ		    1193181
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define KVM_MAX_PIT_INTR_INTERVAL   HZ / 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define KVM_PIT_CHANNEL_MASK	    0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) void kvm_free_pit(struct kvm *kvm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) void kvm_pit_load_count(struct kvm_pit *pit, int channel, u32 val,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 		int hpet_legacy_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) void kvm_pit_set_reinject(struct kvm_pit *pit, bool reinject);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif