From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e7.ny.us.ibm.com (e7.ny.us.ibm.com [32.97.182.137]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id E90D22C03B4 for ; Thu, 6 Mar 2014 11:02:17 +1100 (EST) Received: from /spool/local by e7.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 5 Mar 2014 19:02:15 -0500 Received: from b01cxnp22035.gho.pok.ibm.com (b01cxnp22035.gho.pok.ibm.com [9.57.198.25]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id C73996E803A for ; Wed, 5 Mar 2014 19:02:06 -0500 (EST) Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by b01cxnp22035.gho.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s2602CMh6226222 for ; Thu, 6 Mar 2014 00:02:12 GMT Received: from d01av01.pok.ibm.com (localhost [127.0.0.1]) by d01av01.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s2602AUB032216 for ; Wed, 5 Mar 2014 19:02:11 -0500 From: Cody P Schafer To: Linux PPC , Cody P Schafer Subject: [PATCH v4 05/11] powerpc/perf: add hv_gpci interface header Date: Wed, 5 Mar 2014 16:01:04 -0800 Message-Id: <1394064082-6242-6-git-send-email-cody@linux.vnet.ibm.com> In-Reply-To: <1394064082-6242-1-git-send-email-cody@linux.vnet.ibm.com> References: <1394064082-6242-1-git-send-email-cody@linux.vnet.ibm.com> Cc: Peter Zijlstra , LKML , Michael Ellerman , Ingo Molnar , Paul Mackerras , Arnaldo Carvalho de Melo , scottwood@freescale.com List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , "H_GetPerformanceCounterInfo" (refered to as hv_gpci or just gpci from here on) is an interface to retrieve specific performance counters and other data from the hypervisor. All outputs have a fixed format. This header only describes the portions of the interface that we plan on using in linux at this time. Signed-off-by: Cody P Schafer --- arch/powerpc/perf/hv-gpci.h | 73 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 arch/powerpc/perf/hv-gpci.h diff --git a/arch/powerpc/perf/hv-gpci.h b/arch/powerpc/perf/hv-gpci.h new file mode 100644 index 0000000..b25f460 --- /dev/null +++ b/arch/powerpc/perf/hv-gpci.h @@ -0,0 +1,73 @@ +#ifndef LINUX_POWERPC_PERF_HV_GPCI_H_ +#define LINUX_POWERPC_PERF_HV_GPCI_H_ + +#include + +/* From the document "H_GetPerformanceCounterInfo Interface" v1.07 */ + +/* H_GET_PERF_COUNTER_INFO argument */ +struct hv_get_perf_counter_info_params { + __be32 counter_request; /* I */ + __be32 starting_index; /* IO */ + __be16 secondary_index; /* IO */ + __be16 returned_values; /* O */ + __be32 detail_rc; /* O, only needed when called via *_norets() */ + + /* + * O, size each of counter_value element in bytes, only set for version + * >= 0x3 + */ + __be16 cv_element_size; + + /* I, 0 (zero) for versions < 0x3 */ + __u8 counter_info_version_in; + + /* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */ + __u8 counter_info_version_out; + __u8 reserved[0xC]; + __u8 counter_value[]; +} __packed; + +/* + * counter info version => fw version/reference (spec version) + * + * 8 => power8 (1.07) + * [7 is skipped by spec 1.07] + * 6 => TLBIE (1.07) + * 5 => v7r7m0.phyp (1.05) + * [4 skipped] + * 3 => v7r6m0.phyp (?) + * [1,2 skipped] + * 0 => v7r{2,3,4}m0.phyp (?) + */ +#define COUNTER_INFO_VERSION_CURRENT 0x8 + +/* + * These determine the counter_value[] layout and the meaning of starting_index + * and secondary_index. + * + * Unless otherwise noted, @secondary_index is unused and ignored. + */ +enum counter_info_requests { + + /* GENERAL */ + + /* @starting_index: must be -1 (to refer to the current partition) + */ + CIR_SYSTEM_PERFORMANCE_CAPABILITIES = 0X40, +}; + +struct cv_system_performance_capabilities { + /* If != 0, allowed to collect data from other partitions */ + __u8 perf_collect_privileged; + + /* These following are only valid if counter_info_version >= 0x3 */ +#define CV_CM_GA (1 << 7) +#define CV_CM_EXPANDED (1 << 6) +#define CV_CM_LAB (1 << 5) + /* remaining bits are reserved */ + __u8 capability_mask; + __u8 reserved[0xE]; +} __packed; + +#endif -- 1.9.0