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 34656CCF2C7 for ; Fri, 16 Oct 2026 21:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ZvbMDgra2U1UoaGxz8XvkRbfg6cBMr5E7IJr0sspiBw=; b=rmQOKDOrfax4uXb72RLAAfkuHO 3Yv00Gyt/bYfyB3gvt9PBCsqQkuiOhcua5XUZiD5FbebShywI8sLc4Wq3KP0GlnGJm0V8rhT0KZiX yRQjSMh6veerW8rW4XlLOPZXTYWgyXTTKiBazTBV8Fbix9rw/+Gyc7up9dmSGMwHO19uz1whYh+sV Ps3BcfwVNisDnKEfR2uC11blk5uRe6KeN8cmXajWGuyGBWdXQbD6plXM7fz/UEI4hTeJVLZaGXaOv 6erpG5ziNdqsp0o9JueUO1v7VjM1yNSO8KKBGROVKmRBUHsBZaDMw8kPPYGdxRWqumKw8DX7TJUXF ZIqd6LmQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHpE7-000000044FE-166E; Fri, 16 Oct 2026 21:12:31 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xHpDl-0000000446S-3uy9 for linux-arm-kernel@bombadil.infradead.org; Fri, 16 Oct 2026 21:12:17 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Cc:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Sender:Reply-To:Content-ID:Content-Description; bh=ZvbMDgra2U1UoaGxz8XvkRbfg6cBMr5E7IJr0sspiBw=; b=LxrH+qoSpD9LOojlIAjG7fvjNq 3jkQxcnPMsM7ZxrkCWZdPccTfBY7wQBosfsncOeIc0vRD4Yv+PNjARbI/6TrWph/q4mGcwumYJiOR WHAUFJysh5H05ZatROU/ONR+NIefdgN6zFSZklrW6vC1wC3Iax6T2d0+aMwleLGJIUOiQldxof85t SaJI9pt3VCNbczG5fH3NKGtnfDkThwZ/u1Q0+3YKV8VxhwihgnbfupHfTVE6sIW18DByGuTJ37lRL XLy0yXjMa2xZnD9lrMPiJdhyHpcgtrLog8wG6GnLSM96vV2Q9ePyUXtQKxnjfjg6cvHaj0c6G7kVo 6fovRkjw==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.99.5 #2 (Red Hat Linux)) id 1xHpDi-00000001xSa-2VJ7 for linux-arm-kernel@lists.infradead.org; Fri, 16 Oct 2026 21:12:08 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EDBC216F3; Fri, 16 Oct 2026 14:12:01 -0700 (PDT) Received: from e132581.arm.com (unknown [10.2.196.114]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id AB81A3F673; Fri, 16 Oct 2026 14:12:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1792185125; bh=vkTR0c01qLKuGP/MBGuCwxrpk2UfwNHK062KXd1/KcM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hhIWKh3Q/5nlf7aPdkufCLSSSYQsXy0I7e7u8E1G/pfqOtckLEsGHDxhF4etljP1R X4tVUROFGlCJADnsDTukG5aN+oCXC0YCzTA0y91YKqDI/tMsswMQHIDuljoByuoxwi I6Ntavo/42NzrFodRW1dvvvYHEuhlaIRmL+PcyTM= From: Leo Yan Date: Fri, 16 Oct 2026 22:11:44 +0100 Subject: [PATCH v2 06/11] coresight: trbe: Save and restore trigger counter MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261016-trbe_buffer_refactor_v2-v2-6-383ac26382fa@arm.com> References: <20261016-trbe_buffer_refactor_v2-v2-0-383ac26382fa@arm.com> In-Reply-To: <20261016-trbe_buffer_refactor_v2-v2-0-383ac26382fa@arm.com> To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Anshuman Khandual , Tamas Petz , Tamas Zsoldos , Suyash Mahar , Amir Ayupov Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, Leo Yan X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1792185112; l=1650; i=leo.yan@arm.com; s=20250604; h=from:subject:message-id; bh=vkTR0c01qLKuGP/MBGuCwxrpk2UfwNHK062KXd1/KcM=; b=dyQNi+IMy9C/+FRYKYyUyMYuiCHOCCAEo7Pe5orDfqWdwxv96+k+GABYO4x0FxybQler+3Z71 3F65qmjw9eXCaQ1qxJ1B4rDLsfsj4SWSxRLisqnweqHTDC0E2KBltrO X-Developer-Key: i=leo.yan@arm.com; a=ed25519; pk=k4BaDbvkCXzBFA7Nw184KHGP5thju8lKqJYIrOWxDhI= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261016_221206_868025_AE205057 X-CRM114-Status: GOOD ( 10.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add TRBTRG_EL1 to the saved TRBE state and restore it along with the other TRBE registers. Signed-off-by: Leo Yan --- drivers/hwtracing/coresight/coresight-trbe.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtracing/coresight/coresight-trbe.c index 8187e264ff3c86d445b96c4935a8dbdf5ad9e77c..391e5013647477ae145d777d406c63355bc38278 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -127,12 +127,14 @@ static int trbe_errata_cpucaps[] = { * @trbbaser - Trace Buffer Base Register value * @trbptr - Trace Buffer Write Pointer Register value * @trbsr - Trace Buffer Status Register value + * @trbtrg - Trace Buffer Trigger Counter Register */ struct trbe_save_state { u64 trblimitr; u64 trbbaser; u64 trbptr; u64 trbsr; + u64 trbtrg; }; /* @@ -1537,6 +1539,7 @@ static int arm_trbe_save(struct coresight_device *csdev) state->trbbaser = read_sysreg_s(SYS_TRBBASER_EL1); state->trbptr = read_sysreg_s(SYS_TRBPTR_EL1); state->trbsr = read_sysreg_s(SYS_TRBSR_EL1); + state->trbtrg = read_sysreg_s(SYS_TRBTRG_EL1); return 0; } @@ -1548,6 +1551,7 @@ static void arm_trbe_restore(struct coresight_device *csdev) write_sysreg_s(state->trbbaser, SYS_TRBBASER_EL1); write_sysreg_s(state->trbptr, SYS_TRBPTR_EL1); write_sysreg_s(state->trbsr, SYS_TRBSR_EL1); + write_sysreg_s(state->trbtrg, SYS_TRBTRG_EL1); if (!(state->trblimitr & TRBLIMITR_EL1_E)) { write_sysreg_s(state->trblimitr, SYS_TRBLIMITR_EL1); -- 2.34.1