移去rt

hc

2023-12-08 01573e231f18eb2d99162747186f59511f56b64d

 kernel/include/kvm/arm_arch_timer.h
..
..
@@ -1,19 +1,7 @@
1
+/* SPDX-License-Identifier: GPL-2.0-only */
1
2
 /*
2
3
  * Copyright (C) 2012 ARM Ltd.
3
4
  * Author: Marc Zyngier <marc.zyngier@arm.com>
4
- *
5
- * This program is free software; you can redistribute it and/or modify
6
- * it under the terms of the GNU General Public License version 2 as
7
- * published by the Free Software Foundation.
8
- *
9
- * This program is distributed in the hope that it will be useful,
10
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
11
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12
- * GNU General Public License for more details.
13
- *
14
- * You should have received a copy of the GNU General Public License
15
- * along with this program; if not, write to the Free Software
16
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
5
  */
18
6
 
19
7
 #ifndef __ASM_ARM_KVM_ARCH_TIMER_H
..
..
@@ -21,42 +9,52 @@
21
9
 
22
10
 #include <linux/clocksource.h>
23
11
 #include <linux/hrtimer.h>
24
-#include <linux/workqueue.h>
12
+
13
+enum kvm_arch_timers {
14
+	TIMER_PTIMER,
15
+	TIMER_VTIMER,
16
+	NR_KVM_TIMERS
17
+};
18
+
19
+enum kvm_arch_timer_regs {
20
+	TIMER_REG_CNT,
21
+	TIMER_REG_CVAL,
22
+	TIMER_REG_TVAL,
23
+	TIMER_REG_CTL,
24
+};
25
25
 
26
26
 struct arch_timer_context {
27
-	/* Registers: control register, timer value */
28
-	u32				cnt_ctl;
29
-	u64				cnt_cval;
27
+	struct kvm_vcpu			*vcpu;
30
28
 
31
29
 	/* Timer IRQ */
32
30
 	struct kvm_irq_level		irq;
33
31
 
34
-	/*
35
-	 * We have multiple paths which can save/restore the timer state
36
-	 * onto the hardware, so we need some way of keeping track of
37
-	 * where the latest state is.
38
-	 *
39
-	 * loaded == true:  State is loaded on the hardware registers.
40
-	 * loaded == false: State is stored in memory.
41
-	 */
42
-	bool			loaded;
32
+	/* Emulated Timer (may be unused) */
33
+	struct hrtimer			hrtimer;
43
34
 
44
-	/* Virtual offset */
45
-	u64			cntvoff;
35
+	/*
36
+	 * We have multiple paths which can save/restore the timer state onto
37
+	 * the hardware, so we need some way of keeping track of where the
38
+	 * latest state is.
39
+	 */
40
+	bool				loaded;
41
+
42
+	/* Duplicated state from arch_timer.c for convenience */
43
+	u32				host_timer_irq;
44
+	u32				host_timer_irq_flags;
45
+};
46
+
47
+struct timer_map {
48
+	struct arch_timer_context *direct_vtimer;
49
+	struct arch_timer_context *direct_ptimer;
50
+	struct arch_timer_context *emul_ptimer;
46
51
 };
47
52
 
48
53
 struct arch_timer_cpu {
49
-	struct arch_timer_context	vtimer;
50
-	struct arch_timer_context	ptimer;
54
+	struct arch_timer_context timers[NR_KVM_TIMERS];
51
55
 
52
56
 	/* Background timer used when the guest is not running */
53
57
 	struct hrtimer			bg_timer;
54
-
55
-	/* Work queued with the above timer expires */
56
-	struct work_struct		expired;
57
-
58
-	/* Physical timer emulation */
59
-	struct hrtimer			phys_timer;
60
58
 
61
59
 	/* Is the timer enabled */
62
60
 	bool			enabled;
..
..
@@ -66,7 +64,7 @@
66
64
 int kvm_timer_enable(struct kvm_vcpu *vcpu);
67
65
 int kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu);
68
66
 void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu);
69
-void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu);
67
+void kvm_timer_sync_user(struct kvm_vcpu *vcpu);
70
68
 bool kvm_timer_should_notify_user(struct kvm_vcpu *vcpu);
71
69
 void kvm_timer_update_run(struct kvm_vcpu *vcpu);
72
70
 void kvm_timer_vcpu_terminate(struct kvm_vcpu *vcpu);
..
..
@@ -80,9 +78,6 @@
80
78
 
81
79
 bool kvm_timer_is_pending(struct kvm_vcpu *vcpu);
82
80
 
83
-void kvm_timer_schedule(struct kvm_vcpu *vcpu);
84
-void kvm_timer_unschedule(struct kvm_vcpu *vcpu);
85
-
86
81
 u64 kvm_phys_timer_read(void);
87
82
 
88
83
 void kvm_timer_vcpu_load(struct kvm_vcpu *vcpu);
..
..
@@ -92,7 +87,23 @@
92
87
 
93
88
 bool kvm_arch_timer_get_input_level(int vintid);
94
89
 
95
-#define vcpu_vtimer(v)	(&(v)->arch.timer_cpu.vtimer)
96
-#define vcpu_ptimer(v)	(&(v)->arch.timer_cpu.ptimer)
90
+#define vcpu_timer(v)	(&(v)->arch.timer_cpu)
91
+#define vcpu_get_timer(v,t)	(&vcpu_timer(v)->timers[(t)])
92
+#define vcpu_vtimer(v)	(&(v)->arch.timer_cpu.timers[TIMER_VTIMER])
93
+#define vcpu_ptimer(v)	(&(v)->arch.timer_cpu.timers[TIMER_PTIMER])
94
+
95
+#define arch_timer_ctx_index(ctx)	((ctx) - vcpu_timer((ctx)->vcpu)->timers)
96
+
97
+u64 kvm_arm_timer_read_sysreg(struct kvm_vcpu *vcpu,
98
+			      enum kvm_arch_timers tmr,
99
+			      enum kvm_arch_timer_regs treg);
100
+void kvm_arm_timer_write_sysreg(struct kvm_vcpu *vcpu,
101
+				enum kvm_arch_timers tmr,
102
+				enum kvm_arch_timer_regs treg,
103
+				u64 val);
104
+
105
+/* Needed for tracing */
106
+u32 timer_get_ctl(struct arch_timer_context *ctxt);
107
+u64 timer_get_cval(struct arch_timer_context *ctxt);
97
108
 
98
109
 #endif