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Diffstat (limited to 'arch/avr32/oprofile/op_model_avr32.c')
-rw-r--r--arch/avr32/oprofile/op_model_avr32.c236
1 files changed, 0 insertions, 236 deletions
diff --git a/arch/avr32/oprofile/op_model_avr32.c b/arch/avr32/oprofile/op_model_avr32.c
deleted file mode 100644
index 08308be2c02c..000000000000
--- a/arch/avr32/oprofile/op_model_avr32.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * AVR32 Performance Counter Driver
- *
- * Copyright (C) 2005-2007 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Author: Ronny Pedersen
- */
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/oprofile.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-
-#include <asm/sysreg.h>
-
-#define AVR32_PERFCTR_IRQ_GROUP 0
-#define AVR32_PERFCTR_IRQ_LINE 1
-
-void avr32_backtrace(struct pt_regs * const regs, unsigned int depth);
-
-enum { PCCNT, PCNT0, PCNT1, NR_counter };
-
-struct avr32_perf_counter {
- unsigned long enabled;
- unsigned long event;
- unsigned long count;
- unsigned long unit_mask;
- unsigned long kernel;
- unsigned long user;
-
- u32 ie_mask;
- u32 flag_mask;
-};
-
-static struct avr32_perf_counter counter[NR_counter] = {
- {
- .ie_mask = SYSREG_BIT(IEC),
- .flag_mask = SYSREG_BIT(FC),
- }, {
- .ie_mask = SYSREG_BIT(IE0),
- .flag_mask = SYSREG_BIT(F0),
- }, {
- .ie_mask = SYSREG_BIT(IE1),
- .flag_mask = SYSREG_BIT(F1),
- },
-};
-
-static void avr32_perf_counter_reset(void)
-{
- /* Reset all counter and disable/clear all interrupts */
- sysreg_write(PCCR, (SYSREG_BIT(PCCR_R)
- | SYSREG_BIT(PCCR_C)
- | SYSREG_BIT(FC)
- | SYSREG_BIT(F0)
- | SYSREG_BIT(F1)));
-}
-
-static irqreturn_t avr32_perf_counter_interrupt(int irq, void *dev_id)
-{
- struct avr32_perf_counter *ctr = dev_id;
- struct pt_regs *regs;
- u32 pccr;
-
- if (likely(!(intc_get_pending(AVR32_PERFCTR_IRQ_GROUP)
- & (1 << AVR32_PERFCTR_IRQ_LINE))))
- return IRQ_NONE;
-
- regs = get_irq_regs();
- pccr = sysreg_read(PCCR);
-
- /* Clear the interrupt flags we're about to handle */
- sysreg_write(PCCR, pccr);
-
- /* PCCNT */
- if (ctr->enabled && (pccr & ctr->flag_mask)) {
- sysreg_write(PCCNT, -ctr->count);
- oprofile_add_sample(regs, PCCNT);
- }
- ctr++;
- /* PCNT0 */
- if (ctr->enabled && (pccr & ctr->flag_mask)) {
- sysreg_write(PCNT0, -ctr->count);
- oprofile_add_sample(regs, PCNT0);
- }
- ctr++;
- /* PCNT1 */
- if (ctr->enabled && (pccr & ctr->flag_mask)) {
- sysreg_write(PCNT1, -ctr->count);
- oprofile_add_sample(regs, PCNT1);
- }
-
- return IRQ_HANDLED;
-}
-
-static int avr32_perf_counter_create_files(struct dentry *root)
-{
- struct dentry *dir;
- unsigned int i;
- char filename[4];
-
- for (i = 0; i < NR_counter; i++) {
- snprintf(filename, sizeof(filename), "%u", i);
- dir = oprofilefs_mkdir(root, filename);
-
- oprofilefs_create_ulong(dir, "enabled",
- &counter[i].enabled);
- oprofilefs_create_ulong(dir, "event",
- &counter[i].event);
- oprofilefs_create_ulong(dir, "count",
- &counter[i].count);
-
- /* Dummy entries */
- oprofilefs_create_ulong(dir, "kernel",
- &counter[i].kernel);
- oprofilefs_create_ulong(dir, "user",
- &counter[i].user);
- oprofilefs_create_ulong(dir, "unit_mask",
- &counter[i].unit_mask);
- }
-
- return 0;
-}
-
-static int avr32_perf_counter_setup(void)
-{
- struct avr32_perf_counter *ctr;
- u32 pccr;
- int ret;
- int i;
-
- pr_debug("avr32_perf_counter_setup\n");
-
- if (sysreg_read(PCCR) & SYSREG_BIT(PCCR_E)) {
- printk(KERN_ERR
- "oprofile: setup: perf counter already enabled\n");
- return -EBUSY;
- }
-
- ret = request_irq(AVR32_PERFCTR_IRQ_GROUP,
- avr32_perf_counter_interrupt, IRQF_SHARED,
- "oprofile", counter);
- if (ret)
- return ret;
-
- avr32_perf_counter_reset();
-
- pccr = 0;
- for (i = PCCNT; i < NR_counter; i++) {
- ctr = &counter[i];
- if (!ctr->enabled)
- continue;
-
- pr_debug("enabling counter %d...\n", i);
-
- pccr |= ctr->ie_mask;
-
- switch (i) {
- case PCCNT:
- /* PCCNT always counts cycles, so no events */
- sysreg_write(PCCNT, -ctr->count);
- break;
- case PCNT0:
- pccr |= SYSREG_BF(CONF0, ctr->event);
- sysreg_write(PCNT0, -ctr->count);
- break;
- case PCNT1:
- pccr |= SYSREG_BF(CONF1, ctr->event);
- sysreg_write(PCNT1, -ctr->count);
- break;
- }
- }
-
- pr_debug("oprofile: writing 0x%x to PCCR...\n", pccr);
-
- sysreg_write(PCCR, pccr);
-
- return 0;
-}
-
-static void avr32_perf_counter_shutdown(void)
-{
- pr_debug("avr32_perf_counter_shutdown\n");
-
- avr32_perf_counter_reset();
- free_irq(AVR32_PERFCTR_IRQ_GROUP, counter);
-}
-
-static int avr32_perf_counter_start(void)
-{
- pr_debug("avr32_perf_counter_start\n");
-
- sysreg_write(PCCR, sysreg_read(PCCR) | SYSREG_BIT(PCCR_E));
-
- return 0;
-}
-
-static void avr32_perf_counter_stop(void)
-{
- pr_debug("avr32_perf_counter_stop\n");
-
- sysreg_write(PCCR, sysreg_read(PCCR) & ~SYSREG_BIT(PCCR_E));
-}
-
-static struct oprofile_operations avr32_perf_counter_ops __initdata = {
- .create_files = avr32_perf_counter_create_files,
- .setup = avr32_perf_counter_setup,
- .shutdown = avr32_perf_counter_shutdown,
- .start = avr32_perf_counter_start,
- .stop = avr32_perf_counter_stop,
- .cpu_type = "avr32",
-};
-
-int __init oprofile_arch_init(struct oprofile_operations *ops)
-{
- if (!(current_cpu_data.features & AVR32_FEATURE_PCTR))
- return -ENODEV;
-
- memcpy(ops, &avr32_perf_counter_ops,
- sizeof(struct oprofile_operations));
-
- ops->backtrace = avr32_backtrace;
-
- printk(KERN_INFO "oprofile: using AVR32 performance monitoring.\n");
-
- return 0;
-}
-
-void oprofile_arch_exit(void)
-{
-
-}