Create new header file "nest-pmu.h" to add the data structures and macros needed for the nest pmu support.
Cc: Michael Ellerman <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Anton Blanchard <[email protected]> Cc: Daniel Axtens <[email protected]> Cc: Stephane Eranian <[email protected]> Cc: Sukadev Bhattiprolu <[email protected]> Signed-off-by: Madhavan Srinivasan <[email protected]> --- arch/powerpc/include/asm/nest-pmu.h | 55 +++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 arch/powerpc/include/asm/nest-pmu.h diff --git a/arch/powerpc/include/asm/nest-pmu.h b/arch/powerpc/include/asm/nest-pmu.h new file mode 100644 index 000000000000..13c21817e3cc --- /dev/null +++ b/arch/powerpc/include/asm/nest-pmu.h @@ -0,0 +1,55 @@ +/* + * Nest Performance Monitor counter support. + * + * Copyright (C) 2016 Madhavan Srinivasan, IBM 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. + */ + +#include <linux/perf_event.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/io.h> +#include <asm/opal.h> + +#define NEST_MAX_CHIPS 32 +#define NEST_MAX_PMUS 32 +#define NEST_MAX_PMU_NAME_LEN 256 +#define NEST_MAX_EVENTS_SUPPORTED 64 +#define NEST_ENGINE_START 1 +#define NEST_ENGINE_STOP 0 +#define NEST_MODE_PRODUCTION 1 +#define NEST_MAX_PAGES 16 + +/* + * Structure to hold per chip specific memory address + * information for nest pmus. Nest Counter data are exported + * in per-chip reserved memory region by the PORE Engine. + */ +struct perchip_nest_info { + u32 chip_id; + u64 pbase; + u64 vbase[NEST_MAX_PAGES]; + u32 size; +}; + +/* + * Place holder for nest pmu events and values. + */ +struct nest_ima_events { + char *ev_name; + char *ev_value; +}; + +/* + * Device tree parser code detects nest pmu support and + * registers new nest pmus. This structure will + * hold the pmu functions and attrs for each nest pmu and + * will be referenced at the time of pmu registration. + */ +struct nest_pmu { + struct pmu pmu; + const struct attribute_group *attr_groups[4]; +}; -- 1.9.1
