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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-34144f4eb9esm34294467eec.19.2026.09.29.01.55.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Sep 2026 01:55:54 -0700 (PDT) Sender: Sunil V L From: Sunil V L X-Google-Original-From: Sunil V L , Len Brown , Mayuresh Chitale , Anup Patel , Alexander Shishkin , Rob Herring , Saravana Kannan , Sunil V L Subject: [RFC PATCH 5/5] hwtracing: rvtrace: Add ACPI support Date: Tue, 29 Sep 2026 14:25:24 +0530 Message-ID: <20260929085524.1554507-6-sunilvl@oss.qualcomm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260929085524.1554507-1-sunilvl@oss.qualcomm.com> References: <20260929085524.1554507-1-sunilvl@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=N6i8hG9B c=1 sm=1 tr=0 ts=6abb7d1c cx=c_pps a=cFYjgdjTJScbgFmBucgdfQ==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=x5ONKeZPveTsSohF_q4A:9 a=scEy_gLbYbu1JhEsrz4S:22 X-Proofpoint-ORIG-GUID: Xkg2nxAy3-ApKPBMAHjnXcNgs1jBF3Ld X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI5MDAzNSBTYWx0ZWRfXy7APHTWuJsWH M5TYTJU2kkkgYwoO5J9flIa2+hGHYbRbvxNQs5k1aNahUZdtivy6Xerv4iiPhlaar/FPUZXUZJD xducb+9M7Wpu6Ne3Sh4pDPFApuK/bU68m5WNKYLHknpdDnNuSmQJJW4Qy5qn7cVXBrxqT9nq2Ed vVtooYPegY0b242Gn8mpLjhmicClDldxJj49t6TVYM6+dG4VAoaXqTJ0XVWG0OzvnIeQEQzUcPJ +anVDmQm3UH3gXgKYCa/vnjc11n3YqORlZ4V5tDVnxxwtRLYXexE+v0rSPx14DZnDOaTEyHy/x2 mNCMr8nHFhBUzgPdKIiWD6NDtQO/prJrWRYE/d0S/d29/s6tcX+jAn2uLEJjsFlNoJM5AD1N7Bu jjS5jSwjqnfLgdDi/ox/WAKBcMREaKfw3llUD5eMGS5IP0BCB+dujio7ShJ/B9yeEOgTHsytQMU 24i3jhGB9d3/5Kd4P8Q== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI5MDAzNSBTYWx0ZWRfXykE4z1WQ0Bz7 tXLAbyG90wokDrj0J1MCaYud03loML5wKI4s3vjHWez6ePzbmSZxiQ1rRdPdCiKv3p5QDUii/A4 DBfPz/mUSXaXkxhe/xrdrDPZEP8VNMY= X-Proofpoint-GUID: Xkg2nxAy3-ApKPBMAHjnXcNgs1jBF3Ld X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-29_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 bulkscore=0 spamscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 impostorscore=0 priorityscore=1501 suspectscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609290035 From: Sunil V L Add ACPI device IDs and ACPI-based CPU binding lookup for rvtrace platform devices. Signed-off-by: Sunil V L --- drivers/hwtracing/gtrace/rvtrace-platform.c | 60 +++++++++++++++++++++ 1 file changed, 60 insertions(+) diff --git a/drivers/hwtracing/gtrace/rvtrace-platform.c b/drivers/hwtracing/gtrace/rvtrace-platform.c index 12330d9dcddd..44422d429ccf 100644 --- a/drivers/hwtracing/gtrace/rvtrace-platform.c +++ b/drivers/hwtracing/gtrace/rvtrace-platform.c @@ -3,6 +3,7 @@ * Copyright (c) 2026 Qualcomm Technologies, Inc. */ +#include #include #include #include @@ -174,6 +175,62 @@ static int rvtrace_parse_inconns(struct gtrace_platform_data *pdata) return ret; } +#ifdef CONFIG_ACPI +#include + +static const struct acpi_device_id rvtrace_platform_acpi_match[] = { + { "RSCV0007", 0 }, + {} +}; +MODULE_DEVICE_TABLE(acpi, rvtrace_platform_acpi_match); + +/* + * acpi_handle_to_logical_cpuid - Map a given acpi_handle to the + * logical CPU id of the corresponding CPU device. + * + * Returns the logical CPU id when found. Otherwise returns >= nr_cpus_id. + */ +static int acpi_handle_to_logical_cpuid(acpi_handle handle) +{ + struct acpi_processor *pr; + int i; + + for_each_possible_cpu(i) { + pr = per_cpu(processors, i); + if (pr && pr->handle == handle) + break; + } + + return i; +} + +static int acpi_rvtrace_get_cpu(struct device *dev) +{ + struct acpi_device *adev = ACPI_COMPANION(dev); + acpi_handle cpu_handle; + acpi_status status; + int cpu; + + if (!adev) + return -1; + + status = acpi_get_parent(adev->handle, &cpu_handle); + if (ACPI_FAILURE(status)) + return -1; + + cpu = acpi_handle_to_logical_cpuid(cpu_handle); + if (cpu >= nr_cpu_ids) + return -1; + + return cpu; +} +#else +static int acpi_rvtrace_get_cpu(struct device *dev) +{ + return -1; +} +#endif + #ifdef CONFIG_OF static int of_rvtrace_get_cpu(struct device *dev) { @@ -209,6 +266,8 @@ static int rvtrace_get_cpu(struct device *dev) { if (is_of_node(dev_fwnode(dev))) return of_rvtrace_get_cpu(dev); + else if (is_acpi_device_node(dev_fwnode(dev))) + return acpi_rvtrace_get_cpu(dev); return -1; } @@ -308,6 +367,7 @@ static struct platform_driver rvtrace_platform_driver = { .driver = { .name = "rvtrace", .of_match_table = rvtrace_platform_match, + .acpi_match_table = ACPI_PTR(rvtrace_platform_acpi_match), }, .probe = rvtrace_platform_probe, .remove = rvtrace_platform_remove, -- 2.43.0