[ARM] 5195/1: ARMv7 Oprofile support

Add Oprofile kernel support for ARMv7.
Tested on OMAP3430 and OMAP3530 chipsets (Cortex-A8).

Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 103 insertions, 0 deletions

diff --git a/arch/arm/oprofile/op_model_v7.h b/arch/arm/oprofile/op_model_v7.h
new file mode 100644
index 00000000000..0e19bcc2e10
--- /dev/null
+++ b/arch/arm/oprofile/op_model_v7.h
@@ -0,0 +1,103 @@
+/**
+ * op_model_v7.h
+ * ARM v7 (Cortex A8) Event Monitor Driver
+ *
+ * Copyright 2008 Jean Pihet <jpihet@mvista.com>
+ * Copyright 2004 ARM SMP Development Team
+ * Copyright 2000-2004 Deepak Saxena <dsaxena@mvista.com>
+ * Copyright 2000-2004 MontaVista Software Inc
+ * Copyright 2004 Dave Jiang <dave.jiang@intel.com>
+ * Copyright 2004 Intel Corporation
+ * Copyright 2004 Zwane Mwaikambo <zwane@arm.linux.org.uk>
+ * Copyright 2004 Oprofile Authors
+ *
+ * Read the file COPYING
+ *
+ * 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.
+ */
+#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