From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f172.google.com (mail-pl1-f172.google.com [209.85.214.172]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E525B1428EF for ; Fri, 19 Apr 2024 23:47:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713570476; cv=none; b=FwP4KkDnMOD7tQ8t+fNQI3gEyDjxTWKqEVqXE1+fNpLu6mjlX4fli6UJRhei4U0x7SuGTYwUhJcfFDbliRo5lD8FwrjI4b36mLwmpp4Pd+/D1qGWVMb11DwzNvEx98ZS8W3A+qmHfRj13cjm4qimRfDU2Ud5RsUeHTi7bsX0ygQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713570476; c=relaxed/simple; bh=Gs/9X2hzactn0W0hn5UFwracoeJp45KmCczLf6NHuME=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=BWMwejorlM0O6NIoS4cM/f3KP0i7HonRQFXwKT/Sm8o4KVaXfxgHLmBrHVKv6wWyzRYs8xaUI0E4MATUXBG6lMYErDqIjB4mRhq/BewU9vvFHVcvFs9j8qBj/neBuPtk/KnJg/AW8KcKbVFZIVERFXA0UGOvkVqLxoQ3/cI/Je0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com; spf=pass smtp.mailfrom=rivosinc.com; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b=Lds6TL6F; arc=none smtp.client-ip=209.85.214.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rivosinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=rivosinc-com.20230601.gappssmtp.com header.i=@rivosinc-com.20230601.gappssmtp.com header.b="Lds6TL6F" Received: by mail-pl1-f172.google.com with SMTP id d9443c01a7336-1e4266673bbso24363245ad.2 for ; Fri, 19 Apr 2024 16:47:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1713570474; x=1714175274; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Y0lXa0RA4+kQWkomLRJk1QW7kf666EFgaJ2j58l79bA=; b=Lds6TL6F6woj3WW5X2RBpXs+GK9WBjb/aU3kju/2JJIzKP6TzhazcpojMUWAmyUFg+ omP+Rp0WkyC4+09UO2OtpYt0TxrFaiO9mBHl/a/KL6CnTJubT2et6jfafqP+A5P0RS4x vWSObOQr6vnNiDBNKmu1VIClh137efILgFgSZPHzvvg2EslsYJly0LX9UUxdrCK4YQ1H Mn8kkx3JMSodtmssbb+hgD6hEjGxdlih27kNEAJj7Oq3GuqFWuieT2pXv6f7Rk/n1rdC rnC3O0QTwet/xxVFoHvjtV0MvxiFjjZMcLkt60cIJVRRGbmW6rmtj3G9cvLHvO7WHdDY wuAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713570474; x=1714175274; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Y0lXa0RA4+kQWkomLRJk1QW7kf666EFgaJ2j58l79bA=; b=LvgKyM/e5QujjSrk1YZ5P59WYQTKg6NGjHy03lBP2alHK+MXXFwACeVBwMgAT3M4Sf kRDrIDZUgPIUFIqzMXKhd2xPUVOJWobzByarpRGalMxCwqugdHnv3RJFmO6iUU70nkc1 A2oRs2UC/JnesissyQYUMZIZZaf75zHdtcSwWNnAOXjPy24vHmO8DqKawrhf4IdLmoEo ij0QRZ313Us+zcJV9mp1vIqfZmiJpJIeytqGgTmsdG0hihx+g92MmOW0TO13TdiJ0K3c tSAyTjN/OYxUf4k4dl4Iq73cBVJ9glXOc6dfLuukIM1GKjPhnXdrXMQGV1zNWfAVRGgD ep5Q== X-Gm-Message-State: AOJu0YxNz4HlA5ht+taYXPcNdcf9aV6GWQw5OYxptVljKJ433fd+9U+7 VIYZ+r0Q11LweBneVs5yeMSlv1nKekYqO8fxRmHBb9f7fNCYJTzwXYlEb12ulGJZHrkaL5t58f9 o X-Google-Smtp-Source: AGHT+IFXaW6wZywudrszg7M9K7pzeD0F1Y92Mkq1wCwVh8jMOhVOOMocPyY8L0Q71C8UhuUv6rBj9Q== X-Received: by 2002:a17:903:120a:b0:1e4:70d0:9337 with SMTP id l10-20020a170903120a00b001e470d09337mr4759283plh.45.1713570473875; Fri, 19 Apr 2024 16:47:53 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id w17-20020a170902d11100b001e42f215f33sm3924017plw.85.2024.04.19.16.47.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 16:47:53 -0700 (PDT) From: Atish Patra To: linux-kernel@vger.kernel.org Cc: Atish Patra , Andrew Jones , Anup Patel , Palmer Dabbelt , Ajay Kaher , Albert Ou , Alexandre Ghiti , samuel.holland@sifive.com, Conor Dooley , Juergen Gross , kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org, Mark Rutland , Palmer Dabbelt , Paolo Bonzini , Paul Walmsley , Shuah Khan , virtualization@lists.linux.dev, Will Deacon , x86@kernel.org Subject: [PATCH v8 05/24] RISC-V: Add SBI PMU snapshot definitions Date: Sat, 20 Apr 2024 08:17:21 -0700 Message-Id: <20240420151741.962500-6-atishp@rivosinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240420151741.962500-1-atishp@rivosinc.com> References: <20240420151741.962500-1-atishp@rivosinc.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit SBI PMU Snapshot function optimizes the number of traps to higher privilege mode by leveraging a shared memory between the S/VS-mode and the M/HS mode. Add the definitions for that extension and new error codes. Reviewed-by: Andrew Jones Reviewed-by: Anup Patel Acked-by: Palmer Dabbelt Signed-off-by: Atish Patra --- arch/riscv/include/asm/sbi.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 4afa2cd01bae..9aada4b9f7b5 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -132,6 +132,7 @@ enum sbi_ext_pmu_fid { SBI_EXT_PMU_COUNTER_STOP, SBI_EXT_PMU_COUNTER_FW_READ, SBI_EXT_PMU_COUNTER_FW_READ_HI, + SBI_EXT_PMU_SNAPSHOT_SET_SHMEM, }; union sbi_pmu_ctr_info { @@ -148,6 +149,13 @@ union sbi_pmu_ctr_info { }; }; +/* Data structure to contain the pmu snapshot data */ +struct riscv_pmu_snapshot_data { + u64 ctr_overflow_mask; + u64 ctr_values[64]; + u64 reserved[447]; +}; + #define RISCV_PMU_RAW_EVENT_MASK GENMASK_ULL(47, 0) #define RISCV_PMU_RAW_EVENT_IDX 0x20000 @@ -244,9 +252,11 @@ enum sbi_pmu_ctr_type { /* Flags defined for counter start function */ #define SBI_PMU_START_FLAG_SET_INIT_VALUE BIT(0) +#define SBI_PMU_START_FLAG_INIT_SNAPSHOT BIT(1) /* Flags defined for counter stop function */ #define SBI_PMU_STOP_FLAG_RESET BIT(0) +#define SBI_PMU_STOP_FLAG_TAKE_SNAPSHOT BIT(1) enum sbi_ext_dbcn_fid { SBI_EXT_DBCN_CONSOLE_WRITE = 0, @@ -285,6 +295,7 @@ struct sbi_sta_struct { #define SBI_ERR_ALREADY_AVAILABLE -6 #define SBI_ERR_ALREADY_STARTED -7 #define SBI_ERR_ALREADY_STOPPED -8 +#define SBI_ERR_NO_SHMEM -9 extern unsigned long sbi_spec_version; struct sbiret { -- 2.34.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 15536C4345F for ; Fri, 19 Apr 2024 23:48:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=cin1ldJdDPmIJJteR1liF2UZpvff1ImIdVXd9/ftSro=; b=biiSg+gByX4KCX 31DAqTHpaw+CzV1QxFVOcAxKRwoIcIdZXCkZPUWN6u++CpnFTml8MOvd5prSZjj/wVjeczwsQkts7 PW8nyWCuNEh/kMzUxBw49viukEOaZVJ89afss0KmGSIrIZvd8PKxyjqd2vUtQVxyjmODw0acuJZyq WMXWMkx5NJYtoIDpJ9wxdt4OrqSEGtDOhk52OgMxJt8KKc5KMciq2RPCfegr5n7PF3U0uZzWwoP3g dmUxpqlZT9/JxNYCFEhzPM+JQGN1MW94qH5RWsRr3mm/HV2elPD6j093ix3dd4k+ZnOp9gwU+zWlU l6LnvSnDPW/qtxx6OsBw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rxxy0-00000007J68-2kjg; Fri, 19 Apr 2024 23:48:28 +0000 Received: from mail-pl1-x62e.google.com ([2607:f8b0:4864:20::62e]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rxxxZ-00000007Iae-43qn for linux-riscv@lists.infradead.org; Fri, 19 Apr 2024 23:48:05 +0000 Received: by mail-pl1-x62e.google.com with SMTP id d9443c01a7336-1e4266673bbso24363205ad.2 for ; Fri, 19 Apr 2024 16:47:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1713570474; x=1714175274; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Y0lXa0RA4+kQWkomLRJk1QW7kf666EFgaJ2j58l79bA=; b=BMUe9neBlgW8/pgf5Hr6QvHsOKI77nS1IiFl8mB8WG8A09inOffuIGxsCvUcRrEgVo 2SCkNfYtHIuvIE/zImoWQzSagYkzFLRwBFt43+MCmr07PUtmZQa2bR0XieqcvHeZbjS0 aZe5gGfhtK4yXDjZIrJWTKTLeBHjbkMeXS4ULPuqmyCgtXdWWN5BAPK9UbygqV5WPaQf ZM07AFWm2BwOLa4bJKkSxTVqS1v7C7ffVQzuWs6tWyD/1FxOzvwS/eU7k3JLEzBGMDe4 UHpXoeskAEVD8vCuwgSYFIL6A3Bqn08wny7elVzU6NPuD2cDjuR+gaLAM74e5Xw9Rv9X KuWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713570474; x=1714175274; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Y0lXa0RA4+kQWkomLRJk1QW7kf666EFgaJ2j58l79bA=; b=mcMKu7Zr12i7LP+gLy19SXJesxC0SmSRbu5IAfTIXvoGf51lYz9d4mJdC1VO30+zfu PSaa7/dkOXD1zKyho9USrWQiK2cwxng4xiFZzwkh1+3Xoz5NDppERbZ/lLBJ9uftas/D TgjybbjWKhAXqMRRfkc/DuBgl8XH6bryZzPga9OSNt3UvHfNpGsp/XZLEsQz8qbZkUoL NUXLX9YKGMyoodrJpCzMhOeH3kkWCIob7j0gXdEePPMczMClS1A4d1oNieKeMVdNpV7s MV0be47vodl6PfcKAoU84XO26UYO3tvMhY0nG5/biewYwbtvF07lBoURuk4kjZ9wxInU SKZw== X-Forwarded-Encrypted: i=1; AJvYcCWB5vod9gTYcViFRMpBBcQ26+CUjMvGTcNWBAkVixELrUBhhkVgBdr5BAgQ+Ff8LVptYyaSwqWbEECSlAS3gMRMKzv5PDt3fti/XbFc1bgZ X-Gm-Message-State: AOJu0YxgdAYJaKVUcoG7c/vnpvTpiwt7w3Q7/i6USKe3LcrDj1qcwF26 XIf493SXER/na0p/1RJWxSywmRu2+1WoA/ZxePzHTY89fnU95V3oU+0BiKBPFnk= X-Google-Smtp-Source: AGHT+IFXaW6wZywudrszg7M9K7pzeD0F1Y92Mkq1wCwVh8jMOhVOOMocPyY8L0Q71C8UhuUv6rBj9Q== X-Received: by 2002:a17:903:120a:b0:1e4:70d0:9337 with SMTP id l10-20020a170903120a00b001e470d09337mr4759283plh.45.1713570473875; Fri, 19 Apr 2024 16:47:53 -0700 (PDT) Received: from atishp.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id w17-20020a170902d11100b001e42f215f33sm3924017plw.85.2024.04.19.16.47.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Apr 2024 16:47:53 -0700 (PDT) From: Atish Patra To: linux-kernel@vger.kernel.org Cc: Atish Patra , Andrew Jones , Anup Patel , Palmer Dabbelt , Ajay Kaher , Albert Ou , Alexandre Ghiti , samuel.holland@sifive.com, Conor Dooley , Juergen Gross , kvm-riscv@lists.infradead.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org, Mark Rutland , Palmer Dabbelt , Paolo Bonzini , Paul Walmsley , Shuah Khan , virtualization@lists.linux.dev, Will Deacon , x86@kernel.org Subject: [PATCH v8 05/24] RISC-V: Add SBI PMU snapshot definitions Date: Sat, 20 Apr 2024 08:17:21 -0700 Message-Id: <20240420151741.962500-6-atishp@rivosinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240420151741.962500-1-atishp@rivosinc.com> References: <20240420151741.962500-1-atishp@rivosinc.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240419_164802_194630_C822B1A1 X-CRM114-Status: GOOD ( 11.77 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org SBI PMU Snapshot function optimizes the number of traps to higher privilege mode by leveraging a shared memory between the S/VS-mode and the M/HS mode. Add the definitions for that extension and new error codes. Reviewed-by: Andrew Jones Reviewed-by: Anup Patel Acked-by: Palmer Dabbelt Signed-off-by: Atish Patra --- arch/riscv/include/asm/sbi.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h index 4afa2cd01bae..9aada4b9f7b5 100644 --- a/arch/riscv/include/asm/sbi.h +++ b/arch/riscv/include/asm/sbi.h @@ -132,6 +132,7 @@ enum sbi_ext_pmu_fid { SBI_EXT_PMU_COUNTER_STOP, SBI_EXT_PMU_COUNTER_FW_READ, SBI_EXT_PMU_COUNTER_FW_READ_HI, + SBI_EXT_PMU_SNAPSHOT_SET_SHMEM, }; union sbi_pmu_ctr_info { @@ -148,6 +149,13 @@ union sbi_pmu_ctr_info { }; }; +/* Data structure to contain the pmu snapshot data */ +struct riscv_pmu_snapshot_data { + u64 ctr_overflow_mask; + u64 ctr_values[64]; + u64 reserved[447]; +}; + #define RISCV_PMU_RAW_EVENT_MASK GENMASK_ULL(47, 0) #define RISCV_PMU_RAW_EVENT_IDX 0x20000 @@ -244,9 +252,11 @@ enum sbi_pmu_ctr_type { /* Flags defined for counter start function */ #define SBI_PMU_START_FLAG_SET_INIT_VALUE BIT(0) +#define SBI_PMU_START_FLAG_INIT_SNAPSHOT BIT(1) /* Flags defined for counter stop function */ #define SBI_PMU_STOP_FLAG_RESET BIT(0) +#define SBI_PMU_STOP_FLAG_TAKE_SNAPSHOT BIT(1) enum sbi_ext_dbcn_fid { SBI_EXT_DBCN_CONSOLE_WRITE = 0, @@ -285,6 +295,7 @@ struct sbi_sta_struct { #define SBI_ERR_ALREADY_AVAILABLE -6 #define SBI_ERR_ALREADY_STARTED -7 #define SBI_ERR_ALREADY_STOPPED -8 +#define SBI_ERR_NO_SHMEM -9 extern unsigned long sbi_spec_version; struct sbiret { -- 2.34.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv