MFP4:

- Implement sampling modes and logging support in hwpmc(4).

- Separate MI and MD parts of hwpmc(4) and allow sharing of
  PMC implementations across different architectures.
  Add support for P4 (EMT64) style PMCs to the amd64 code.

- New pmcstat(8) options: -E (exit time counts) -W (counts
  every context switch), -R (print log file).

- pmc(3) API changes, improve our ability to keep ABI compatibility
  in the future.  Add more 'alias' names for commonly used events.

- bug fixes & documentation.

1 files changed, 103 insertions, 0 deletions

diff --git a/sys/dev/hwpmc/hwpmc_amd.h b/sys/dev/hwpmc/hwpmc_amd.h
new file mode 100644
index 0000000..aa6417b
--- /dev/null
+++ b/sys/dev/hwpmc/hwpmc_amd.h
@@ -0,0 +1,103 @@
+/*-
+ * Copyright (c) 2005, Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/* Machine dependent interfaces */
+
+#ifndef _DEV_HWPMC_AMD_H_
+#define	_DEV_HWPMC_AMD_H_ 1
+
+/* AMD K7 and K8 PMCs */
+
+#define	AMD_PMC_EVSEL_0		0xC0010000
+#define	AMD_PMC_EVSEL_1		0xC0010001
+#define	AMD_PMC_EVSEL_2		0xC0010002
+#define	AMD_PMC_EVSEL_3		0xC0010003
+
+#define	AMD_PMC_PERFCTR_0	0xC0010004
+#define	AMD_PMC_PERFCTR_1	0xC0010005
+#define	AMD_PMC_PERFCTR_2	0xC0010006
+#define	AMD_PMC_PERFCTR_3	0xC0010007
+
+
+#define	AMD_NPMCS		5 /* 1 TSC + 4 PMCs */
+
+#define	AMD_PMC_COUNTERMASK	0xFF000000
+#define	AMD_PMC_TO_COUNTER(x)	(((x) << 24) & AMD_PMC_COUNTERMASK)
+#define	AMD_PMC_INVERT		(1 << 23)
+#define	AMD_PMC_ENABLE		(1 << 22)
+#define	AMD_PMC_INT		(1 << 20)
+#define	AMD_PMC_PC		(1 << 19)
+#define	AMD_PMC_EDGE		(1 << 18)
+#define	AMD_PMC_OS		(1 << 17)
+#define	AMD_PMC_USR		(1 << 16)
+
+#define	AMD_PMC_UNITMASK_M	0x10
+#define	AMD_PMC_UNITMASK_O	0x08
+#define	AMD_PMC_UNITMASK_E	0x04
+#define	AMD_PMC_UNITMASK_S	0x02
+#define	AMD_PMC_UNITMASK_I	0x01
+#define	AMD_PMC_UNITMASK_MOESI	0x1F
+
+#define	AMD_PMC_UNITMASK	0xFF00
+#define	AMD_PMC_EVENTMASK 	0x00FF
+
+#define	AMD_PMC_TO_UNITMASK(x)	(((x) << 8) & AMD_PMC_UNITMASK)
+#define	AMD_PMC_TO_EVENTMASK(x)	((x) & 0xFF)
+#define	AMD_VALID_BITS		(AMD_PMC_COUNTERMASK | AMD_PMC_INVERT |	\
+	AMD_PMC_ENABLE | AMD_PMC_INT | AMD_PMC_PC | AMD_PMC_EDGE | 	\
+	AMD_PMC_OS | AMD_PMC_USR | AMD_PMC_UNITMASK | AMD_PMC_EVENTMASK)
+
+#define AMD_PMC_CAPS		(PMC_CAP_INTERRUPT | PMC_CAP_USER | 	\
+	PMC_CAP_SYSTEM | PMC_CAP_EDGE | PMC_CAP_THRESHOLD | 		\
+	PMC_CAP_READ | PMC_CAP_WRITE | PMC_CAP_INVERT | PMC_CAP_QUALIFIER)
+
+#define AMD_PMC_IS_STOPPED(evsel) ((rdmsr((evsel)) & AMD_PMC_ENABLE) == 0)
+#define AMD_PMC_HAS_OVERFLOWED(pmc) ((rdpmc(pmc) & (1ULL << 47)) == 0)
+
+#define	AMD_RELOAD_COUNT_TO_PERFCTR_VALUE(V)	(-(V))
+#define	AMD_PERFCTR_VALUE_TO_RELOAD_COUNT(P)	(-(P))
+
+struct pmc_md_amd_op_pmcallocate {
+	uint32_t	pm_amd_config;
+};
+
+#ifdef _KERNEL
+
+/* MD extension for 'struct pmc' */
+struct pmc_md_amd_pmc {
+	uint32_t	pm_amd_evsel;
+};
+
+/*
+ * Prototypes
+ */
+
+struct pmc_mdep *pmc_amd_initialize(void);		/* AMD K7/K8 PMCs */
+
+#endif /* _KERNEL */
+#endif /* _DEV_HWPMC_AMD_H_ */