time.c (f83d9396d1f63048c423efa00e4e244da10a35fd) time.c (b2d3e3354e2a0d0e912308618ea33d0337f405c3)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Common time service routines for LoongArch machines.
4 *
5 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
6 */
7#include <linux/clockchips.h>
8#include <linux/delay.h>

--- 109 unchanged lines hidden (view full) ---

118static long init_timeval;
119
120void sync_counter(void)
121{
122 /* Ensure counter begin at 0 */
123 csr_write64(-init_timeval, LOONGARCH_CSR_CNTC);
124}
125
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Common time service routines for LoongArch machines.
4 *
5 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
6 */
7#include <linux/clockchips.h>
8#include <linux/delay.h>

--- 109 unchanged lines hidden (view full) ---

118static long init_timeval;
119
120void sync_counter(void)
121{
122 /* Ensure counter begin at 0 */
123 csr_write64(-init_timeval, LOONGARCH_CSR_CNTC);
124}
125
126static int get_timer_irq(void)
127{
128 struct irq_domain *d = irq_find_matching_fwnode(cpuintc_handle, DOMAIN_BUS_ANY);
129
130 if (d)
131 return irq_create_mapping(d, EXCCODE_TIMER - EXCCODE_INT_START);
132
133 return -EINVAL;
134}
135
126int constant_clockevent_init(void)
127{
128 unsigned int irq;
129 unsigned int cpu = smp_processor_id();
130 unsigned long min_delta = 0x600;
131 unsigned long max_delta = (1UL << 48) - 1;
132 struct clock_event_device *cd;
133 static int timer_irq_installed = 0;
134
136int constant_clockevent_init(void)
137{
138 unsigned int irq;
139 unsigned int cpu = smp_processor_id();
140 unsigned long min_delta = 0x600;
141 unsigned long max_delta = (1UL << 48) - 1;
142 struct clock_event_device *cd;
143 static int timer_irq_installed = 0;
144
135 irq = EXCCODE_TIMER - EXCCODE_INT_START;
145 irq = get_timer_irq();
146 if (irq < 0)
147 pr_err("Failed to map irq %d (timer)\n", irq);
136
137 cd = &per_cpu(constant_clockevent_device, cpu);
138
139 cd->name = "Constant";
140 cd->features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_PERCPU;
141
142 cd->irq = irq;
143 cd->rating = 320;

--- 71 unchanged lines hidden --- 		148
149 cd = &per_cpu(constant_clockevent_device, cpu);
150
151 cd->name = "Constant";
152 cd->features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_PERCPU;
153
154 cd->irq = irq;
155 cd->rating = 320;

--- 71 unchanged lines hidden ---