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Diffstat (limited to 'arch/arm/oprofile/op_model_arm11_core.c')
-rw-r--r--arch/arm/oprofile/op_model_arm11_core.c162
1 files changed, 0 insertions, 162 deletions
diff --git a/arch/arm/oprofile/op_model_arm11_core.c b/arch/arm/oprofile/op_model_arm11_core.c
deleted file mode 100644
index ef3e2653b90c..000000000000
--- a/arch/arm/oprofile/op_model_arm11_core.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/**
- * @file op_model_arm11_core.c
- * ARM11 Event Monitor Driver
- * @remark Copyright 2004 ARM SMP Development Team
- */
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/oprofile.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/smp.h>
-
-#include "op_counter.h"
-#include "op_arm_model.h"
-#include "op_model_arm11_core.h"
-
-/*
- * ARM11 PMU support
- */
-static inline void arm11_write_pmnc(u32 val)
-{
- /* upper 4bits and 7, 11 are write-as-0 */
- val &= 0x0ffff77f;
- asm volatile("mcr p15, 0, %0, c15, c12, 0" : : "r" (val));
-}
-
-static inline u32 arm11_read_pmnc(void)
-{
- u32 val;
- asm volatile("mrc p15, 0, %0, c15, c12, 0" : "=r" (val));
- return val;
-}
-
-static void arm11_reset_counter(unsigned int cnt)
-{
- u32 val = -(u32)counter_config[CPU_COUNTER(smp_processor_id(), cnt)].count;
- switch (cnt) {
- case CCNT:
- asm volatile("mcr p15, 0, %0, c15, c12, 1" : : "r" (val));
- break;
-
- case PMN0:
- asm volatile("mcr p15, 0, %0, c15, c12, 2" : : "r" (val));
- break;
-
- case PMN1:
- asm volatile("mcr p15, 0, %0, c15, c12, 3" : : "r" (val));
- break;
- }
-}
-
-int arm11_setup_pmu(void)
-{
- unsigned int cnt;
- u32 pmnc;
-
- if (arm11_read_pmnc() & PMCR_E) {
- printk(KERN_ERR "oprofile: CPU%u PMU still enabled when setup new event counter.\n", smp_processor_id());
- return -EBUSY;
- }
-
- /* initialize PMNC, reset overflow, D bit, C bit and P bit. */
- arm11_write_pmnc(PMCR_OFL_PMN0 | PMCR_OFL_PMN1 | PMCR_OFL_CCNT |
- PMCR_C | PMCR_P);
-
- for (pmnc = 0, cnt = PMN0; cnt <= CCNT; cnt++) {
- unsigned long event;
-
- if (!counter_config[CPU_COUNTER(smp_processor_id(), cnt)].enabled)
- continue;
-
- event = counter_config[CPU_COUNTER(smp_processor_id(), cnt)].event & 255;
-
- /*
- * Set event (if destined for PMNx counters)
- */
- if (cnt == PMN0) {
- pmnc |= event << 20;
- } else if (cnt == PMN1) {
- pmnc |= event << 12;
- }
-
- /*
- * We don't need to set the event if it's a cycle count
- * Enable interrupt for this counter
- */
- pmnc |= PMCR_IEN_PMN0 << cnt;
- arm11_reset_counter(cnt);
- }
- arm11_write_pmnc(pmnc);
-
- return 0;
-}
-
-int arm11_start_pmu(void)
-{
- arm11_write_pmnc(arm11_read_pmnc() | PMCR_E);
- return 0;
-}
-
-int arm11_stop_pmu(void)
-{
- unsigned int cnt;
-
- arm11_write_pmnc(arm11_read_pmnc() & ~PMCR_E);
-
- for (cnt = PMN0; cnt <= CCNT; cnt++)
- arm11_reset_counter(cnt);
-
- return 0;
-}
-
-/*
- * CPU counters' IRQ handler (one IRQ per CPU)
- */
-static irqreturn_t arm11_pmu_interrupt(int irq, void *arg)
-{
- struct pt_regs *regs = get_irq_regs();
- unsigned int cnt;
- u32 pmnc;
-
- pmnc = arm11_read_pmnc();
-
- for (cnt = PMN0; cnt <= CCNT; cnt++) {
- if ((pmnc & (PMCR_OFL_PMN0 << cnt)) && (pmnc & (PMCR_IEN_PMN0 << cnt))) {
- arm11_reset_counter(cnt);
- oprofile_add_sample(regs, CPU_COUNTER(smp_processor_id(), cnt));
- }
- }
- /* Clear counter flag(s) */
- arm11_write_pmnc(pmnc);
- return IRQ_HANDLED;
-}
-
-int arm11_request_interrupts(const int *irqs, int nr)
-{
- unsigned int i;
- int ret = 0;
-
- for(i = 0; i < nr; i++) {
- ret = request_irq(irqs[i], arm11_pmu_interrupt, IRQF_DISABLED, "CP15 PMU", NULL);
- if (ret != 0) {
- printk(KERN_ERR "oprofile: unable to request IRQ%u for MPCORE-EM\n",
- irqs[i]);
- break;
- }
- }
-
- if (i != nr)
- while (i-- != 0)
- free_irq(irqs[i], NULL);
-
- return ret;
-}
-
-void arm11_release_interrupts(const int *irqs, int nr)
-{
- unsigned int i;
-
- for (i = 0; i < nr; i++)
- free_irq(irqs[i], NULL);
-}