Refactor PowerPC hwpmc(4) driver into generic and specific. More refactoring

will likely be done as more drivers are added, since AIM-compatible processors
have similar PMC configuration logic.

1 files changed, 60 insertions, 0 deletions

diff --git a/sys/dev/hwpmc/hwpmc_powerpc.h b/sys/dev/hwpmc/hwpmc_powerpc.h
new file mode 100644
index 0000000..5e3ca92
--- /dev/null
+++ b/sys/dev/hwpmc/hwpmc_powerpc.h
@@ -0,0 +1,60 @@
+/*-
+ * Copyright (c) 2013 Justin Hibbits
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _DEV_HWPMC_POWERPC_H_
+#define	_DEV_HWPMC_POWERPC_H_ 1
+
+#ifdef _KERNEL
+
+#define	POWERPC_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 POWERPC_PMC_KERNEL_ENABLE	(0x1 << 30)
+#define POWERPC_PMC_USER_ENABLE		(0x1 << 31)
+
+#define POWERPC_PMC_ENABLE	(POWERPC_PMC_KERNEL_ENABLE | POWERPC_PMC_USER_ENABLE)
+#define	POWERPC_RELOAD_COUNT_TO_PERFCTR_VALUE(V)	(0x80000000-(V))
+#define	POWERPC_PERFCTR_VALUE_TO_RELOAD_COUNT(P)	(0x80000000-(P))
+
+struct powerpc_cpu {
+	struct pmc_hw   *pc_ppcpmcs;
+};
+
+extern struct powerpc_cpu **powerpc_pcpu;
+
+extern int pmc_mpc7xxx_initialize(struct pmc_mdep *pmc_mdep);
+extern int pmc_ppc970_initialize(struct pmc_mdep *pmc_mdep);
+
+extern int powerpc_describe(int cpu, int ri, struct pmc_info *pi, struct pmc **ppmc);
+extern int powerpc_get_config(int cpu, int ri, struct pmc **ppm);
+#endif /* _KERNEL */
+
+#endif	/* _DEV_HWPMC_POWERPC_H_ */