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-rw-r--r--arch/x86/kernel/hpet.c124
1 files changed, 62 insertions, 62 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 640ff75cc523..32f21b429881 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -315,7 +315,7 @@ static void hpet_legacy_clockevent_register(void)
pr_debug("Clockevent registered\n");
}
-static int hpet_set_periodic(struct clock_event_device *evt, int timer)
+static int hpet_set_periodic(struct clock_event_device *evt, int channel)
{
unsigned int cfg, cmp, now;
uint64_t delta;
@@ -325,11 +325,11 @@ static int hpet_set_periodic(struct clock_event_device *evt, int timer)
delta >>= evt->shift;
now = hpet_readl(HPET_COUNTER);
cmp = now + (unsigned int)delta;
- cfg = hpet_readl(HPET_Tn_CFG(timer));
+ cfg = hpet_readl(HPET_Tn_CFG(channel));
cfg |= HPET_TN_ENABLE | HPET_TN_PERIODIC | HPET_TN_SETVAL |
HPET_TN_32BIT;
- hpet_writel(cfg, HPET_Tn_CFG(timer));
- hpet_writel(cmp, HPET_Tn_CMP(timer));
+ hpet_writel(cfg, HPET_Tn_CFG(channel));
+ hpet_writel(cmp, HPET_Tn_CMP(channel));
udelay(1);
/*
* HPET on AMD 81xx needs a second write (with HPET_TN_SETVAL
@@ -338,32 +338,32 @@ static int hpet_set_periodic(struct clock_event_device *evt, int timer)
* (See AMD-8111 HyperTransport I/O Hub Data Sheet,
* Publication # 24674)
*/
- hpet_writel((unsigned int)delta, HPET_Tn_CMP(timer));
+ hpet_writel((unsigned int)delta, HPET_Tn_CMP(channel));
hpet_start_counter();
hpet_print_config();
return 0;
}
-static int hpet_set_oneshot(struct clock_event_device *evt, int timer)
+static int hpet_set_oneshot(struct clock_event_device *evt, int channel)
{
unsigned int cfg;
- cfg = hpet_readl(HPET_Tn_CFG(timer));
+ cfg = hpet_readl(HPET_Tn_CFG(channel));
cfg &= ~HPET_TN_PERIODIC;
cfg |= HPET_TN_ENABLE | HPET_TN_32BIT;
- hpet_writel(cfg, HPET_Tn_CFG(timer));
+ hpet_writel(cfg, HPET_Tn_CFG(channel));
return 0;
}
-static int hpet_shutdown(struct clock_event_device *evt, int timer)
+static int hpet_shutdown(struct clock_event_device *evt, int channel)
{
unsigned int cfg;
- cfg = hpet_readl(HPET_Tn_CFG(timer));
+ cfg = hpet_readl(HPET_Tn_CFG(channel));
cfg &= ~HPET_TN_ENABLE;
- hpet_writel(cfg, HPET_Tn_CFG(timer));
+ hpet_writel(cfg, HPET_Tn_CFG(channel));
return 0;
}
@@ -460,30 +460,30 @@ static struct clock_event_device hpet_clockevent = {
void hpet_msi_unmask(struct irq_data *data)
{
- struct hpet_dev *hdev = irq_data_get_irq_handler_data(data);
+ struct hpet_dev *hc = irq_data_get_irq_handler_data(data);
unsigned int cfg;
/* unmask it */
- cfg = hpet_readl(HPET_Tn_CFG(hdev->num));
+ cfg = hpet_readl(HPET_Tn_CFG(hc->num));
cfg |= HPET_TN_ENABLE | HPET_TN_FSB;
- hpet_writel(cfg, HPET_Tn_CFG(hdev->num));
+ hpet_writel(cfg, HPET_Tn_CFG(hc->num));
}
void hpet_msi_mask(struct irq_data *data)
{
- struct hpet_dev *hdev = irq_data_get_irq_handler_data(data);
+ struct hpet_dev *hc = irq_data_get_irq_handler_data(data);
unsigned int cfg;
/* mask it */
- cfg = hpet_readl(HPET_Tn_CFG(hdev->num));
+ cfg = hpet_readl(HPET_Tn_CFG(hc->num));
cfg &= ~(HPET_TN_ENABLE | HPET_TN_FSB);
- hpet_writel(cfg, HPET_Tn_CFG(hdev->num));
+ hpet_writel(cfg, HPET_Tn_CFG(hc->num));
}
-void hpet_msi_write(struct hpet_dev *hdev, struct msi_msg *msg)
+void hpet_msi_write(struct hpet_dev *hc, struct msi_msg *msg)
{
- hpet_writel(msg->data, HPET_Tn_ROUTE(hdev->num));
- hpet_writel(msg->address_lo, HPET_Tn_ROUTE(hdev->num) + 4);
+ hpet_writel(msg->data, HPET_Tn_ROUTE(hc->num));
+ hpet_writel(msg->address_lo, HPET_Tn_ROUTE(hc->num) + 4);
}
static int hpet_msi_shutdown(struct clock_event_device *evt)
@@ -503,13 +503,13 @@ static int hpet_msi_set_periodic(struct clock_event_device *evt)
static int hpet_msi_resume(struct clock_event_device *evt)
{
- struct hpet_dev *hdev = clockevent_to_channel(evt);
- struct irq_data *data = irq_get_irq_data(hdev->irq);
+ struct hpet_dev *hc = clockevent_to_channel(evt);
+ struct irq_data *data = irq_get_irq_data(hc->irq);
struct msi_msg msg;
/* Restore the MSI msg and unmask the interrupt */
irq_chip_compose_msi_msg(data, &msg);
- hpet_msi_write(hdev, &msg);
+ hpet_msi_write(hc, &msg);
hpet_msi_unmask(data);
return 0;
}
@@ -522,11 +522,11 @@ static int hpet_msi_next_event(unsigned long delta,
static irqreturn_t hpet_interrupt_handler(int irq, void *data)
{
- struct hpet_dev *dev = data;
- struct clock_event_device *evt = &dev->evt;
+ struct hpet_dev *hc = data;
+ struct clock_event_device *evt = &hc->evt;
if (!evt->event_handler) {
- pr_info("Spurious interrupt HPET timer %d\n", dev->num);
+ pr_info("Spurious interrupt HPET channel %d\n", hc->num);
return IRQ_HANDLED;
}
@@ -551,22 +551,22 @@ static int hpet_setup_irq(struct hpet_dev *dev)
return 0;
}
-static void init_one_hpet_msi_clockevent(struct hpet_dev *hdev, int cpu)
+static void init_one_hpet_msi_clockevent(struct hpet_dev *hc, int cpu)
{
- struct clock_event_device *evt = &hdev->evt;
+ struct clock_event_device *evt = &hc->evt;
- if (!(hdev->flags & HPET_DEV_VALID))
+ if (!(hc->flags & HPET_DEV_VALID))
return;
- hdev->cpu = cpu;
- per_cpu(cpu_hpet_dev, cpu) = hdev;
- evt->name = hdev->name;
- hpet_setup_irq(hdev);
- evt->irq = hdev->irq;
+ hc->cpu = cpu;
+ per_cpu(cpu_hpet_dev, cpu) = hc;
+ evt->name = hc->name;
+ hpet_setup_irq(hc);
+ evt->irq = hc->irq;
evt->rating = 110;
evt->features = CLOCK_EVT_FEAT_ONESHOT;
- if (hdev->flags & HPET_DEV_PERI_CAP) {
+ if (hc->flags & HPET_DEV_PERI_CAP) {
evt->features |= CLOCK_EVT_FEAT_PERIODIC;
evt->set_state_periodic = hpet_msi_set_periodic;
}
@@ -575,7 +575,7 @@ static void init_one_hpet_msi_clockevent(struct hpet_dev *hdev, int cpu)
evt->set_state_oneshot = hpet_msi_set_oneshot;
evt->tick_resume = hpet_msi_resume;
evt->set_next_event = hpet_msi_next_event;
- evt->cpumask = cpumask_of(hdev->cpu);
+ evt->cpumask = cpumask_of(hc->cpu);
clockevents_config_and_register(evt, hpet_freq, HPET_MIN_PROG_DELTA,
0x7FFFFFFF);
@@ -589,35 +589,35 @@ static struct hpet_dev *hpet_get_unused_timer(void)
return NULL;
for (i = 0; i < hpet_base.nr_channels; i++) {
- struct hpet_dev *hdev = &hpet_devs[i];
+ struct hpet_dev *hc = &hpet_devs[i];
- if (!(hdev->flags & HPET_DEV_VALID))
+ if (!(hc->flags & HPET_DEV_VALID))
continue;
if (test_and_set_bit(HPET_DEV_USED_BIT,
- (unsigned long *)&hdev->flags))
+ (unsigned long *)&hc->flags))
continue;
- return hdev;
+ return hc;
}
return NULL;
}
static int hpet_cpuhp_online(unsigned int cpu)
{
- struct hpet_dev *hdev = hpet_get_unused_timer();
+ struct hpet_dev *hc = hpet_get_unused_timer();
- if (hdev)
- init_one_hpet_msi_clockevent(hdev, cpu);
+ if (hc)
+ init_one_hpet_msi_clockevent(hc, cpu);
return 0;
}
static int hpet_cpuhp_dead(unsigned int cpu)
{
- struct hpet_dev *hdev = per_cpu(cpu_hpet_dev, cpu);
+ struct hpet_dev *hc = per_cpu(cpu_hpet_dev, cpu);
- if (!hdev)
+ if (!hc)
return 0;
- free_irq(hdev->irq, hdev);
- hdev->flags &= ~HPET_DEV_USED;
+ free_irq(hc->irq, hc);
+ hc->flags &= ~HPET_DEV_USED;
per_cpu(cpu_hpet_dev, cpu) = NULL;
return 0;
}
@@ -653,26 +653,26 @@ static void __init hpet_msi_capability_lookup(unsigned int start_timer)
return;
for (i = start_timer; i < num_timers - RESERVE_TIMERS; i++) {
- struct hpet_dev *hdev = &hpet_devs[num_timers_used];
+ struct hpet_dev *hc = &hpet_devs[num_timers_used];
unsigned int cfg = hpet_base.channels[i].boot_cfg;
/* Only consider HPET timer with MSI support */
if (!(cfg & HPET_TN_FSB_CAP))
continue;
- hdev->flags = 0;
+ hc->flags = 0;
if (cfg & HPET_TN_PERIODIC_CAP)
- hdev->flags |= HPET_DEV_PERI_CAP;
- sprintf(hdev->name, "hpet%d", i);
- hdev->num = i;
+ hc->flags |= HPET_DEV_PERI_CAP;
+ sprintf(hc->name, "hpet%d", i);
+ hc->num = i;
- irq = hpet_assign_irq(hpet_domain, hdev, hdev->num);
+ irq = hpet_assign_irq(hpet_domain, hc, hc->num);
if (irq <= 0)
continue;
- hdev->irq = irq;
- hdev->flags |= HPET_DEV_FSB_CAP;
- hdev->flags |= HPET_DEV_VALID;
+ hc->irq = irq;
+ hc->flags |= HPET_DEV_FSB_CAP;
+ hc->flags |= HPET_DEV_VALID;
num_timers_used++;
if (num_timers_used == num_possible_cpus())
break;
@@ -691,13 +691,13 @@ static void __init hpet_reserve_msi_timers(struct hpet_data *hd)
return;
for (i = 0; i < hpet_base.nr_channels; i++) {
- struct hpet_dev *hdev = &hpet_devs[i];
+ struct hpet_dev *hc = &hpet_devs[i];
- if (!(hdev->flags & HPET_DEV_VALID))
+ if (!(hc->flags & HPET_DEV_VALID))
continue;
- hd->hd_irq[hdev->num] = hdev->irq;
- hpet_reserve_timer(hd, hdev->num);
+ hd->hd_irq[hc->num] = hc->irq;
+ hpet_reserve_timer(hd, hc->num);
}
}
#endif
@@ -1138,8 +1138,8 @@ void hpet_unregister_irq_handler(rtc_irq_handler handler)
EXPORT_SYMBOL_GPL(hpet_unregister_irq_handler);
/*
- * Timer 1 for RTC emulation. We use one shot mode, as periodic mode
- * is not supported by all HPET implementations for timer 1.
+ * Channel 1 for RTC emulation. We use one shot mode, as periodic mode
+ * is not supported by all HPET implementations for channel 1.
*
* hpet_rtc_timer_init() is called when the rtc is initialized.
*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 20:23:14 +0000