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-rw-r--r--recipes/linux/linux-omap/oprofile-0.9.3.armv7.diff599
1 files changed, 0 insertions, 599 deletions
diff --git a/recipes/linux/linux-omap/oprofile-0.9.3.armv7.diff b/recipes/linux/linux-omap/oprofile-0.9.3.armv7.diff
deleted file mode 100644
index 1eedbb50ff..0000000000
--- a/recipes/linux/linux-omap/oprofile-0.9.3.armv7.diff
+++ /dev/null
@@ -1,599 +0,0 @@
-Hi,
-
-This patch adds Oprofile support on ARMv7, using the PMNC unit.
-Tested on OMAP3430 SDP.
-
-Feedback and comments are welcome.
-
-The patch to user space components is attached for reference. It i applies
-against version 0.9.3 of oprofile source
-(http://prdownloads.sourceforge.net/oprofile/oprofile-0.9.3.tar.gz).
-
-Regards,
-Jean.
-
----
-
-From: Jean Pihet <jpihet@mvista.com>
-Date: Tue, 6 May 2008 17:21:44 +0200
-Subject: [PATCH] ARM: Add ARMv7 oprofile support
-
-Add ARMv7 Oprofile support to kernel
-
-Signed-off-by: Jean Pihet <jpihet@mvista.com>
----
-
-diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
-index c60a27d..60b50a0 100644
---- a/arch/arm/Kconfig
-+++ b/arch/arm/Kconfig
-@@ -161,6 +161,11 @@ config OPROFILE_MPCORE
- config OPROFILE_ARM11_CORE
- bool
-
-+config OPROFILE_ARMV7
-+ def_bool y
-+ depends on CPU_V7 && !SMP
-+ bool
-+
- endif
-
- config VECTORS_BASE
-diff --git a/arch/arm/oprofile/Makefile b/arch/arm/oprofile/Makefile
-index e61d0cc..88e31f5 100644
---- a/arch/arm/oprofile/Makefile
-+++ b/arch/arm/oprofile/Makefile
-@@ -11,3 +11,4 @@ oprofile-$(CONFIG_CPU_XSCALE) += op_model_xscale.o
- oprofile-$(CONFIG_OPROFILE_ARM11_CORE) += op_model_arm11_core.o
- oprofile-$(CONFIG_OPROFILE_ARMV6) += op_model_v6.o
- oprofile-$(CONFIG_OPROFILE_MPCORE) += op_model_mpcore.o
-+oprofile-$(CONFIG_OPROFILE_ARMV7) += op_model_v7.o
-diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c
-index 0a5cf3a..3fcd752 100644
---- a/arch/arm/oprofile/common.c
-+++ b/arch/arm/oprofile/common.c
-@@ -145,6 +145,10 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
- spec = &op_mpcore_spec;
- #endif
-
-+#ifdef CONFIG_OPROFILE_ARMV7
-+ spec = &op_armv7_spec;
-+#endif
-+
- if (spec) {
- ret = spec->init();
- if (ret < 0)
-diff --git a/arch/arm/oprofile/op_arm_model.h
-b/arch/arm/oprofile/op_arm_model.h
-index 4899c62..8c4e4f6 100644
---- a/arch/arm/oprofile/op_arm_model.h
-+++ b/arch/arm/oprofile/op_arm_model.h
-@@ -26,6 +26,7 @@ extern struct op_arm_model_spec op_xscale_spec;
-
- extern struct op_arm_model_spec op_armv6_spec;
- extern struct op_arm_model_spec op_mpcore_spec;
-+extern struct op_arm_model_spec op_armv7_spec;
-
- extern void arm_backtrace(struct pt_regs * const regs, unsigned int depth);
-
-diff --git a/arch/arm/oprofile/op_model_v7.c b/arch/arm/oprofile/op_model_v7.c
-new file mode 100644
-index 0000000..a159bc1
---- /dev/null
-+++ b/arch/arm/oprofile/op_model_v7.c
-@@ -0,0 +1,407 @@
-+/**
-+ * @file op_model_v7.c
-+ * ARM V7 (Cortex A8) Event Monitor Driver
-+ *
-+ * @remark Copyright 2008 Jean Pihet <jpihet@mvista.com>
-+ * @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_v7.h"
-+
-+/* #define DEBUG */
-+
-+
-+/*
-+ * ARM V7 PMNC support
-+ */
-+
-+static u32 cnt_en[CNTMAX];
-+
-+static inline void armv7_pmnc_write(u32 val)
-+{
-+ val &= PMNC_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c12, 0" : : "r" (val));
-+}
-+
-+static inline u32 armv7_pmnc_read(void)
-+{
-+ u32 val;
-+
-+ asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
-+ return val;
-+}
-+
-+static inline u32 armv7_pmnc_enable_counter(unsigned int cnt)
-+{
-+ u32 val;
-+
-+ if (cnt >= CNTMAX) {
-+ printk(KERN_ERR "oprofile: CPU%u enabling wrong PMNC counter"
-+ " %d\n", smp_processor_id(), cnt);
-+ return -1;
-+ }
-+
-+ if (cnt == CCNT)
-+ val = CNTENS_C;
-+ else
-+ val = (1 << (cnt - CNT0));
-+
-+ val &= CNTENS_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c12, 1" : : "r" (val));
-+
-+ return cnt;
-+}
-+
-+static inline u32 armv7_pmnc_disable_counter(unsigned int cnt)
-+{
-+ u32 val;
-+
-+ if (cnt >= CNTMAX) {
-+ printk(KERN_ERR "oprofile: CPU%u disabling wrong PMNC counter"
-+ " %d\n", smp_processor_id(), cnt);
-+ return -1;
-+ }
-+
-+ if (cnt == CCNT)
-+ val = CNTENC_C;
-+ else
-+ val = (1 << (cnt - CNT0));
-+
-+ val &= CNTENC_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c12, 2" : : "r" (val));
-+
-+ return cnt;
-+}
-+
-+static inline u32 armv7_pmnc_enable_intens(unsigned int cnt)
-+{
-+ u32 val;
-+
-+ if (cnt >= CNTMAX) {
-+ printk(KERN_ERR "oprofile: CPU%u enabling wrong PMNC counter"
-+ " interrupt enable %d\n", smp_processor_id(), cnt);
-+ return -1;
-+ }
-+
-+ if (cnt == CCNT)
-+ val = INTENS_C;
-+ else
-+ val = (1 << (cnt - CNT0));
-+
-+ val &= INTENS_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c14, 1" : : "r" (val));
-+
-+ return cnt;
-+}
-+
-+static inline u32 armv7_pmnc_getreset_flags(void)
-+{
-+ u32 val;
-+
-+ /* Read */
-+ asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
-+
-+ /* Write to clear flags */
-+ val &= FLAG_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c12, 3" : : "r" (val));
-+
-+ return val;
-+}
-+
-+static inline int armv7_pmnc_select_counter(unsigned int cnt)
-+{
-+ u32 val;
-+
-+ if ((cnt == CCNT) || (cnt >= CNTMAX)) {
-+ printk(KERN_ERR "oprofile: CPU%u selecting wrong PMNC counteri"
-+ " %d\n", smp_processor_id(), cnt);
-+ return -1;
-+ }
-+
-+ val = (cnt - CNT0) & SELECT_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c12, 5" : : "r" (val));
-+
-+ return cnt;
-+}
-+
-+static inline void armv7_pmnc_write_evtsel(unsigned int cnt, u32 val)
-+{
-+ if (armv7_pmnc_select_counter(cnt) == cnt) {
-+ val &= EVTSEL_MASK;
-+ asm volatile("mcr p15, 0, %0, c9, c13, 1" : : "r" (val));
-+ }
-+}
-+
-+static void armv7_pmnc_reset_counter(unsigned int cnt)
-+{
-+ u32 cpu_cnt = CPU_COUNTER(smp_processor_id(), cnt);
-+ u32 val = -(u32)counter_config[cpu_cnt].count;
-+
-+ switch (cnt) {
-+ case CCNT:
-+ armv7_pmnc_disable_counter(cnt);
-+
-+ asm volatile("mcr p15, 0, %0, c9, c13, 0" : : "r" (val));
-+
-+ if (cnt_en[cnt] != 0)
-+ armv7_pmnc_enable_counter(cnt);
-+
-+ break;
-+
-+ case CNT0:
-+ case CNT1:
-+ case CNT2:
-+ case CNT3:
-+ armv7_pmnc_disable_counter(cnt);
-+
-+ if (armv7_pmnc_select_counter(cnt) == cnt)
-+ asm volatile("mcr p15, 0, %0, c9, c13, 2" : : "r" (val));
-+
-+ if (cnt_en[cnt] != 0)
-+ armv7_pmnc_enable_counter(cnt);
-+
-+ break;
-+
-+ default:
-+ printk(KERN_ERR "oprofile: CPU%u resetting wrong PMNC counter"
-+ " %d\n", smp_processor_id(), cnt);
-+ break;
-+ }
-+}
-+
-+int armv7_setup_pmnc(void)
-+{
-+ unsigned int cnt;
-+
-+ if (armv7_pmnc_read() & PMNC_E) {
-+ printk(KERN_ERR "oprofile: CPU%u PMNC still enabled when setup"
-+ " new event counter.\n", smp_processor_id());
-+ return -EBUSY;
-+ }
-+
-+ /*
-+ * Initialize & Reset PMNC: C bit, D bit and P bit.
-+ * Note: Using a slower count for CCNT (D bit: divide by 64) results
-+ * in a more stable system
-+ */
-+ armv7_pmnc_write(PMNC_P | PMNC_C | PMNC_D);
-+
-+
-+ for (cnt = CCNT; cnt < CNTMAX; cnt++) {
-+ unsigned long event;
-+ u32 cpu_cnt = CPU_COUNTER(smp_processor_id(), cnt);
-+
-+ /*
-+ * Disable counter
-+ */
-+ armv7_pmnc_disable_counter(cnt);
-+ cnt_en[cnt] = 0;
-+
-+ if (!counter_config[cpu_cnt].enabled)
-+ continue;
-+
-+ event = counter_config[cpu_cnt].event & 255;
-+
-+ /*
-+ * Set event (if destined for PMNx counters)
-+ * We don't need to set the event if it's a cycle count
-+ */
-+ if (cnt != CCNT)
-+ armv7_pmnc_write_evtsel(cnt, event);
-+
-+ /*
-+ * Enable interrupt for this counter
-+ */
-+ armv7_pmnc_enable_intens(cnt);
-+
-+ /*
-+ * Reset counter
-+ */
-+ armv7_pmnc_reset_counter(cnt);
-+
-+ /*
-+ * Enable counter
-+ */
-+ armv7_pmnc_enable_counter(cnt);
-+ cnt_en[cnt] = 1;
-+ }
-+
-+ return 0;
-+}
-+
-+static inline void armv7_start_pmnc(void)
-+{
-+ armv7_pmnc_write(armv7_pmnc_read() | PMNC_E);
-+}
-+
-+static inline void armv7_stop_pmnc(void)
-+{
-+ armv7_pmnc_write(armv7_pmnc_read() & ~PMNC_E);
-+}
-+
-+/*
-+ * CPU counters' IRQ handler (one IRQ per CPU)
-+ */
-+static irqreturn_t armv7_pmnc_interrupt(int irq, void *arg)
-+{
-+ struct pt_regs *regs = get_irq_regs();
-+ unsigned int cnt;
-+ u32 flags;
-+
-+
-+ /*
-+ * Stop IRQ generation
-+ */
-+ armv7_stop_pmnc();
-+
-+ /*
-+ * Get and reset overflow status flags
-+ */
-+ flags = armv7_pmnc_getreset_flags();
-+
-+ /*
-+ * Cycle counter
-+ */
-+ if (flags & FLAG_C) {
-+ u32 cpu_cnt = CPU_COUNTER(smp_processor_id(), CCNT);
-+ armv7_pmnc_reset_counter(CCNT);
-+ oprofile_add_sample(regs, cpu_cnt);
-+ }
-+
-+ /*
-+ * PMNC counters 0:3
-+ */
-+ for (cnt = CNT0; cnt < CNTMAX; cnt++) {
-+ if (flags & (1 << (cnt - CNT0))) {
-+ u32 cpu_cnt = CPU_COUNTER(smp_processor_id(), cnt);
-+ armv7_pmnc_reset_counter(cnt);
-+ oprofile_add_sample(regs, cpu_cnt);
-+ }
-+ }
-+
-+ /*
-+ * Allow IRQ generation
-+ */
-+ armv7_start_pmnc();
-+
-+ return IRQ_HANDLED;
-+}
-+
-+int armv7_request_interrupts(int *irqs, int nr)
-+{
-+ unsigned int i;
-+ int ret = 0;
-+
-+ for (i = 0; i < nr; i++) {
-+ ret = request_irq(irqs[i], armv7_pmnc_interrupt,
-+ IRQF_DISABLED, "CP15 PMNC", NULL);
-+ if (ret != 0) {
-+ printk(KERN_ERR "oprofile: unable to request IRQ%u"
-+ " for ARMv7\n",
-+ irqs[i]);
-+ break;
-+ }
-+ }
-+
-+ if (i != nr)
-+ while (i-- != 0)
-+ free_irq(irqs[i], NULL);
-+
-+ return ret;
-+}
-+
-+void armv7_release_interrupts(int *irqs, int nr)
-+{
-+ unsigned int i;
-+
-+ for (i = 0; i < nr; i++)
-+ free_irq(irqs[i], NULL);
-+}
-+
-+#ifdef DEBUG
-+static void armv7_pmnc_dump_regs(void)
-+{
-+ u32 val;
-+ unsigned int cnt;
-+
-+ printk(KERN_INFO "PMNC registers dump:\n");
-+
-+ asm volatile("mrc p15, 0, %0, c9, c12, 0" : "=r" (val));
-+ printk(KERN_INFO "PMNC =0x%08x\n", val);
-+
-+ asm volatile("mrc p15, 0, %0, c9, c12, 1" : "=r" (val));
-+ printk(KERN_INFO "CNTENS=0x%08x\n", val);
-+
-+ asm volatile("mrc p15, 0, %0, c9, c14, 1" : "=r" (val));
-+ printk(KERN_INFO "INTENS=0x%08x\n", val);
-+
-+ asm volatile("mrc p15, 0, %0, c9, c12, 3" : "=r" (val));
-+ printk(KERN_INFO "FLAGS =0x%08x\n", val);
-+
-+ asm volatile("mrc p15, 0, %0, c9, c12, 5" : "=r" (val));
-+ printk(KERN_INFO "SELECT=0x%08x\n", val);
-+
-+ asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r" (val));
-+ printk(KERN_INFO "CCNT =0x%08x\n", val);
-+
-+ for (cnt = CNT0; cnt < CNTMAX; cnt++) {
-+ armv7_pmnc_select_counter(cnt);
-+ asm volatile("mrc p15, 0, %0, c9, c13, 2" : "=r" (val));
-+ printk(KERN_INFO "CNT[%d] count =0x%08x\n", cnt-CNT0, val);
-+ asm volatile("mrc p15, 0, %0, c9, c13, 1" : "=r" (val));
-+ printk(KERN_INFO "CNT[%d] evtsel=0x%08x\n", cnt-CNT0, val);
-+ }
-+}
-+#endif
-+
-+
-+static int irqs[] = {
-+#ifdef CONFIG_ARCH_OMAP3
-+ INT_34XX_BENCH_MPU_EMUL,
-+#endif
-+};
-+
-+static void armv7_pmnc_stop(void)
-+{
-+#ifdef DEBUG
-+ armv7_pmnc_dump_regs();
-+#endif
-+ armv7_stop_pmnc();
-+ armv7_release_interrupts(irqs, ARRAY_SIZE(irqs));
-+}
-+
-+static int armv7_pmnc_start(void)
-+{
-+ int ret;
-+
-+#ifdef DEBUG
-+ armv7_pmnc_dump_regs();
-+#endif
-+ ret = armv7_request_interrupts(irqs, ARRAY_SIZE(irqs));
-+ if (ret >= 0)
-+ armv7_start_pmnc();
-+
-+ return ret;
-+}
-+
-+static int armv7_detect_pmnc(void)
-+{
-+ return 0;
-+}
-+
-+struct op_arm_model_spec op_armv7_spec = {
-+ .init = armv7_detect_pmnc,
-+ .num_counters = 5,
-+ .setup_ctrs = armv7_setup_pmnc,
-+ .start = armv7_pmnc_start,
-+ .stop = armv7_pmnc_stop,
-+ .name = "arm/armv7",
-+};
-diff --git a/arch/arm/oprofile/op_model_v7.h b/arch/arm/oprofile/op_model_v7.h
-new file mode 100644
-index 0000000..08f40ea
---- /dev/null
-+++ b/arch/arm/oprofile/op_model_v7.h
-@@ -0,0 +1,101 @@
-+/**
-+ * @file op_model_v7.h
-+ * ARM v7 (Cortex A8) Event Monitor Driver
-+ *
-+ * @remark Copyright 2008 Jean Pihet <jpihet@mvista.com>
-+ * @remark Copyright 2004 ARM SMP Development Team
-+ * @remark Copyright 2000-2004 Deepak Saxena <dsaxena@mvista.com>
-+ * @remark Copyright 2000-2004 MontaVista Software Inc
-+ * @remark Copyright 2004 Dave Jiang <dave.jiang@intel.com>
-+ * @remark Copyright 2004 Intel Corporation
-+ * @remark Copyright 2004 Zwane Mwaikambo <zwane@arm.linux.org.uk>
-+ * @remark Copyright 2004 Oprofile Authors
-+ *
-+ * @remark Read the file COPYING
-+ *
-+ * @author Zwane Mwaikambo
-+ */
-+#ifndef OP_MODEL_V7_H
-+#define OP_MODEL_V7_H
-+
-+/*
-+ * Per-CPU PMNC: config reg
-+ */
-+#define PMNC_E (1 << 0) /* Enable all counters */
-+#define PMNC_P (1 << 1) /* Reset all counters */
-+#define PMNC_C (1 << 2) /* Cycle counter reset */
-+#define PMNC_D (1 << 3) /* CCNT counts every 64th cpu cycle */
-+#define PMNC_X (1 << 4) /* Export to ETM */
-+#define PMNC_DP (1 << 5) /* Disable CCNT if non-invasive debug*/
-+#define PMNC_MASK 0x3f /* Mask for writable bits */
-+
-+/*
-+ * Available counters
-+ */
-+#define CCNT 0
-+#define CNT0 1
-+#define CNT1 2
-+#define CNT2 3
-+#define CNT3 4
-+#define CNTMAX 5
-+
-+#define CPU_COUNTER(cpu, counter) ((cpu) * CNTMAX + (counter))
-+
-+/*
-+ * CNTENS: counters enable reg
-+ */
-+#define CNTENS_P0 (1 << 0)
-+#define CNTENS_P1 (1 << 1)
-+#define CNTENS_P2 (1 << 2)
-+#define CNTENS_P3 (1 << 3)
-+#define CNTENS_C (1 << 31)
-+#define CNTENS_MASK 0x8000000f /* Mask for writable bits */
-+
-+/*
-+ * CNTENC: counters disable reg
-+ */
-+#define CNTENC_P0 (1 << 0)
-+#define CNTENC_P1 (1 << 1)
-+#define CNTENC_P2 (1 << 2)
-+#define CNTENC_P3 (1 << 3)
-+#define CNTENC_C (1 << 31)
-+#define CNTENC_MASK 0x8000000f /* Mask for writable bits */
-+
-+/*
-+ * INTENS: counters overflow interrupt enable reg
-+ */
-+#define INTENS_P0 (1 << 0)
-+#define INTENS_P1 (1 << 1)
-+#define INTENS_P2 (1 << 2)
-+#define INTENS_P3 (1 << 3)
-+#define INTENS_C (1 << 31)
-+#define INTENS_MASK 0x8000000f /* Mask for writable bits */
-+
-+/*
-+ * EVTSEL: Event selection reg
-+ */
-+#define EVTSEL_MASK 0x7f /* Mask for writable bits */
-+
-+/*
-+ * SELECT: Counter selection reg
-+ */
-+#define SELECT_MASK 0x1f /* Mask for writable bits */
-+
-+/*
-+ * FLAG: counters overflow flag status reg
-+ */
-+#define FLAG_P0 (1 << 0)
-+#define FLAG_P1 (1 << 1)
-+#define FLAG_P2 (1 << 2)
-+#define FLAG_P3 (1 << 3)
-+#define FLAG_C (1 << 31)
-+#define FLAG_MASK 0x8000000f /* Mask for writable bits */
-+
-+
-+int armv7_setup_pmu(void);
-+int armv7_start_pmu(void);
-+int armv7_stop_pmu(void);
-+int armv7_request_interrupts(int *, int);
-+void armv7_release_interrupts(int *, int);
-+
-+#endif
-
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