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-rw-r--r--arch/mips/sibyte/bcm1480/smp.c5
-rw-r--r--arch/mips/sibyte/bcm1480/time.c74
-rw-r--r--arch/mips/sibyte/sb1250/irq.c36
-rw-r--r--arch/mips/sibyte/sb1250/smp.c5
-rw-r--r--arch/mips/sibyte/sb1250/time.c104
-rw-r--r--arch/mips/sibyte/swarm/setup.c25
6 files changed, 82 insertions, 167 deletions
diff --git a/arch/mips/sibyte/bcm1480/smp.c b/arch/mips/sibyte/bcm1480/smp.c
index 6eac36d1b8c8..02b266a31c46 100644
--- a/arch/mips/sibyte/bcm1480/smp.c
+++ b/arch/mips/sibyte/bcm1480/smp.c
@@ -69,8 +69,9 @@ void bcm1480_smp_init(void)
void bcm1480_smp_finish(void)
{
- extern void bcm1480_time_init(void);
- bcm1480_time_init();
+ extern void sb1480_clockevent_init(void);
+
+ sb1480_clockevent_init();
local_irq_enable();
}
diff --git a/arch/mips/sibyte/bcm1480/time.c b/arch/mips/sibyte/bcm1480/time.c
index 5b4bfbbb5a24..c730744aa474 100644
--- a/arch/mips/sibyte/bcm1480/time.c
+++ b/arch/mips/sibyte/bcm1480/time.c
@@ -27,9 +27,8 @@
*/
#include <linux/clockchips.h>
#include <linux/interrupt.h>
-#include <linux/sched.h>
+#include <linux/percpu.h>
#include <linux/spinlock.h>
-#include <linux/kernel_stat.h>
#include <asm/irq.h>
#include <asm/addrspace.h>
@@ -101,25 +100,36 @@ static void sibyte_set_mode(enum clock_event_mode mode,
break;
case CLOCK_EVT_MODE_UNUSED: /* shuddup gcc */
+ case CLOCK_EVT_MODE_RESUME:
;
}
}
-struct clock_event_device sibyte_hpt_clockevent = {
- .name = "bcm1480-counter",
- .features = CLOCK_EVT_FEAT_PERIODIC,
- .set_mode = sibyte_set_mode,
- .shift = 32,
- .irq = 0,
-};
+static int sibyte_next_event(unsigned long delta, struct clock_event_device *cd)
+{
+ unsigned int cpu = smp_processor_id();
+ void __iomem *timer_init;
+ unsigned int cnt;
+ int res;
+
+ timer_init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
+ cnt = __raw_readq(timer_init);
+ cnt += delta;
+ __raw_writeq(cnt, timer_init);
+ res = ((long)(__raw_readq(timer_init) - cnt ) > 0) ? -ETIME : 0;
+
+ return res;
+}
+
+static DEFINE_PER_CPU(struct clock_event_device, sibyte_hpt_clockevent);
static irqreturn_t sibyte_counter_handler(int irq, void *dev_id)
{
- struct clock_event_device *cd = &sibyte_hpt_clockevent;
unsigned int cpu = smp_processor_id();
+ struct clock_event_device *cd = &per_cpu(sibyte_hpt_clockevent, cpu);
/* Reset the timer */
- __raw_writeq(M_SCD_TIMER_ENABLE|M_SCD_TIMER_MODE_CONTINUOUS,
+ __raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG)));
cd->event_handler(cd);
@@ -140,24 +150,21 @@ static struct irqaction sibyte_counter_irqaction = {
* called directly from irq_handler.S when IP[4] is set during an
* interrupt
*/
-static void __init sb1480_clockevent_init(void)
+void __cpuinit sb1480_clockevent_init(void)
{
unsigned int cpu = smp_processor_id();
unsigned int irq = K_BCM1480_INT_TIMER_0 + cpu;
+ struct clock_event_device *cd = &per_cpu(sibyte_hpt_clockevent, cpu);
- setup_irq(irq, &sibyte_counter_irqaction);
-}
+ cd->name = "bcm1480-counter";
+ cd->features = CLOCK_EVT_FEAT_PERIODIC |
+ CLOCK_EVT_MODE_ONESHOT;
+ cd->set_next_event = sibyte_next_event;
+ cd->set_mode = sibyte_set_mode;
+ cd->irq = irq;
+ clockevent_set_clock(cd, BCM1480_HPT_VALUE);
-void bcm1480_timer_interrupt(void)
-{
- int cpu = smp_processor_id();
- int irq = K_BCM1480_INT_TIMER_0 + cpu;
-
- /* Reset the timer */
- __raw_writeq(M_SCD_TIMER_ENABLE|M_SCD_TIMER_MODE_CONTINUOUS,
- IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG)));
-
- ll_timer_interrupt(irq);
+ setup_irq(irq, &sibyte_counter_irqaction);
}
static cycle_t bcm1480_hpt_read(void)
@@ -168,9 +175,26 @@ static cycle_t bcm1480_hpt_read(void)
return (jiffies + 1) * (BCM1480_HPT_VALUE / HZ) - count;
}
+struct clocksource bcm1480_clocksource = {
+ .name = "MIPS",
+ .rating = 200,
+ .read = bcm1480_hpt_read,
+ .mask = CLOCKSOURCE_MASK(32),
+ .shift = 32,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+void __init sb1480_clocksource_init(void)
+{
+ struct clocksource *cs = &bcm1480_clocksource;
+
+ clocksource_set_clock(cs, BCM1480_HPT_VALUE);
+ clocksource_register(cs);
+}
+
void __init bcm1480_hpt_setup(void)
{
- clocksource_mips.read = bcm1480_hpt_read;
mips_hpt_frequency = BCM1480_HPT_VALUE;
+ sb1480_clocksource_init();
sb1480_clockevent_init();
}
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index 7659174819c6..500d17e84c09 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -400,43 +400,11 @@ static void sb1250_kgdb_interrupt(void)
#endif /* CONFIG_KGDB */
-static inline void sb1250_timer_interrupt(void)
-{
- int cpu = smp_processor_id();
- int irq = K_INT_TIMER_0 + cpu;
-
- irq_enter();
- kstat_this_cpu.irqs[irq]++;
-
- write_seqlock(&xtime_lock);
-
- /* ACK interrupt */
- ____raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
- IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG)));
-
- /*
- * call the generic timer interrupt handling
- */
- do_timer(1);
-
- write_sequnlock(&xtime_lock);
-
- /*
- * In UP mode, we call local_timer_interrupt() to do profiling
- * and process accouting.
- *
- * In SMP mode, local_timer_interrupt() is invoked by appropriate
- * low-level local timer interrupt handler.
- */
- local_timer_interrupt(irq);
-
- irq_exit();
-}
-
extern void sb1250_mailbox_interrupt(void);
asmlinkage void plat_irq_dispatch(void)
{
+ unsigned int cpu = smp_processor_id();
unsigned int pending;
/*
@@ -454,7 +422,7 @@ asmlinkage void plat_irq_dispatch(void)
if (pending & CAUSEF_IP7) /* CPU performance counter interrupt */
do_IRQ(MIPS_CPU_IRQ_BASE + 7);
else if (pending & CAUSEF_IP4)
- sb1250_timer_interrupt();
+ do_IRQ(K_INT_TIMER_0 + cpu); /* sb1250_timer_interrupt() */
#ifdef CONFIG_SMP
else if (pending & CAUSEF_IP3)
diff --git a/arch/mips/sibyte/sb1250/smp.c b/arch/mips/sibyte/sb1250/smp.c
index c38e1f34460d..aaa4f30dda79 100644
--- a/arch/mips/sibyte/sb1250/smp.c
+++ b/arch/mips/sibyte/sb1250/smp.c
@@ -57,8 +57,9 @@ void sb1250_smp_init(void)
void sb1250_smp_finish(void)
{
- extern void sb1250_time_init(void);
- sb1250_time_init();
+ extern void sb1250_clockevent_init(void);
+
+ sb1250_clockevent_init();
local_irq_enable();
}
diff --git a/arch/mips/sibyte/sb1250/time.c b/arch/mips/sibyte/sb1250/time.c
index fe11fed8e0d7..9ef54628bc9c 100644
--- a/arch/mips/sibyte/sb1250/time.c
+++ b/arch/mips/sibyte/sb1250/time.c
@@ -100,6 +100,7 @@ static void sibyte_set_mode(enum clock_event_mode mode,
break;
case CLOCK_EVT_MODE_UNUSED: /* shuddup gcc */
+ case CLOCK_EVT_MODE_RESUME:
;
}
}
@@ -144,79 +145,7 @@ static struct irqaction sibyte_irqaction = {
.name = "timer",
};
-/*
- * The general purpose timer ticks at 1 Mhz independent if
- * the rest of the system
- */
-static void sibyte_set_mode(enum clock_event_mode mode,
- struct clock_event_device *evt)
-{
- unsigned int cpu = smp_processor_id();
- void __iomem *timer_cfg, *timer_init;
-
- timer_cfg = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG));
- timer_init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
-
- switch (mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- __raw_writeq(0, timer_cfg);
- __raw_writeq((V_SCD_TIMER_FREQ / HZ) - 1, timer_init);
- __raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
- timer_cfg);
- break;
-
- case CLOCK_EVT_MODE_ONESHOT:
- /* Stop the timer until we actually program a shot */
- case CLOCK_EVT_MODE_SHUTDOWN:
- __raw_writeq(0, timer_cfg);
- break;
-
- case CLOCK_EVT_MODE_UNUSED: /* shuddup gcc */
- ;
- }
-}
-
-static int
-sibyte_next_event(unsigned long delta, struct clock_event_device *evt)
-{
- unsigned int cpu = smp_processor_id();
- void __iomem *timer_cfg, *timer_init;
-
- timer_cfg = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG));
- timer_init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
-
- __raw_writeq(0, timer_cfg);
- __raw_writeq(delta, timer_init);
- __raw_writeq(M_SCD_TIMER_ENABLE, timer_cfg);
-
- return 0;
-}
-
-struct clock_event_device sibyte_hpt_clockevent = {
- .name = "sb1250-counter",
- .features = CLOCK_EVT_FEAT_PERIODIC,
- .set_mode = sibyte_set_mode,
- .set_next_event = sibyte_next_event,
- .shift = 32,
- .irq = 0,
-};
-
-static irqreturn_t sibyte_counter_handler(int irq, void *dev_id)
-{
- struct clock_event_device *cd = &sibyte_hpt_clockevent;
-
- cd->event_handler(cd);
-
- return IRQ_HANDLED;
-}
-
-static struct irqaction sibyte_irqaction = {
- .handler = sibyte_counter_handler,
- .flags = IRQF_DISABLED | IRQF_PERCPU,
- .name = "timer",
-};
-
-static void __init sb1250_clockevent_init(void)
+void __cpuinit sb1250_clockevent_init(void)
{
struct clock_event_device *cd = &sibyte_hpt_clockevent;
unsigned int cpu = smp_processor_id();
@@ -249,12 +178,6 @@ static void __init sb1250_clockevent_init(void)
clockevents_register_device(cd);
}
-void __init plat_time_init(void)
-{
- sb1250_clocksource_init();
- sb1250_clockevent_init();
-}
-
/*
* The HPT is free running from SB1250_HPT_VALUE down to 0 then starts over
* again.
@@ -267,3 +190,26 @@ static cycle_t sb1250_hpt_read(void)
return SB1250_HPT_VALUE - count;
}
+
+struct clocksource bcm1250_clocksource = {
+ .name = "MIPS",
+ .rating = 200,
+ .read = sb1250_hpt_read,
+ .mask = CLOCKSOURCE_MASK(32),
+ .shift = 32,
+ .flags = CLOCK_SOURCE_IS_CONTINUOUS,
+};
+
+void __init sb1250_clocksource_init(void)
+{
+ struct clocksource *cs = &bcm1250_clocksource;
+
+ clocksource_set_clock(cs, V_SCD_TIMER_FREQ);
+ clocksource_register(cs);
+}
+
+void __init plat_time_init(void)
+{
+ sb1250_clocksource_init();
+ sb1250_clockevent_init();
+}
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 8b3ef0e4cd55..080c966263b7 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -69,31 +69,6 @@ const char *get_system_type(void)
return "SiByte " SIBYTE_BOARD_NAME;
}
-void __init plat_time_init(void)
-{
-#if defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
- /* Setup HPT */
- sb1250_hpt_setup();
-#endif
-}
-
-void __init plat_timer_setup(struct irqaction *irq)
-{
- /*
- * we don't set up irqaction, because we will deliver timer
- * interrupts through low-level (direct) meachanism.
- */
-
- /* We only need to setup the generic timer */
-#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
- bcm1480_time_init();
-#elif defined(CONFIG_SIBYTE_SB1250) || defined(CONFIG_SIBYTE_BCM112X)
- sb1250_time_init();
-#else
-#error invalid SiByte board configuration
-#endif
-}
-
int swarm_be_handler(struct pt_regs *regs, int is_fixup)
{
if (!is_fixup && (regs->cp0_cause & 4)) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 07:37:22 +0000