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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) 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> MIME-Version: 1.0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI5MDAzNSBTYWx0ZWRfX217rxINmRYdu KqyF7ll1NUtB0EJYxj1tV651wJy5WS+aiBZoMevqxPGXFvECugnaa1QdZxvNzVwMGisjpXluBax C/PqVORP9AQhOvQqrzPJ+GzP8xL8JYLtn6q3HcMYc0gTWOnuRPzm01KLAEWg0peF0Y06ktAUlj1 XznKUk5KKshwUtKwVL6jiX9eo52HnbMbeOTmHQLI0FAv1PEOOI9dqzEnNZRAnK1pabnbU59WmN/ Le1/40jO8GLtdxRPV2IXeMQ0MfXpauCw38JYUo9asevZ01zlBtlt05S5hh6cmbC3fp78uiYKOQT z7hlDVTVpKVjl+P33A9aa7oWODN3OrDcG38Leg7qrvbeg1PjRKDe6sovCtzNscG6XTLRh43cH++ BKJDVKRBsK8XmNhoYWXwae8ROih1jyJQW7gOWRwaHPmGaltoG1KJOvsAGXRN8kirTt/sb2LENQ7 equQ68+QiSunz+xvRIQ== X-Authority-Analysis: v=2.4 cv=FJSOVOos c=1 sm=1 tr=0 ts=6abb7d1c cx=c_pps a=Uww141gWH0fZj/3QKPojxA==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=x5ONKeZPveTsSohF_q4A:9 a=PxkB5W3o20Ba91AHUih5:22 X-Proofpoint-ORIG-GUID: Wfd1gZjCCn8d-l_Qr2ii6xk5aLz9cuXM X-Proofpoint-GUID: Wfd1gZjCCn8d-l_Qr2ii6xk5aLz9cuXM X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI5MDAzNSBTYWx0ZWRfX1+5KXq8c9tnw i5GT5vj+sPamyIgNgWCH0BvTX9ATqOBAJIP05WZhRNNHyJ9UF0ZRnGKTmTr7MfDnS8apVyAUMg8 lMT/GeqG+BssK3O9i80cyqqaHFFoWdI= 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 priorityscore=1501 adultscore=0 clxscore=1015 malwarescore=0 bulkscore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 spamscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609290035 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260929_095600_625513_09723A3C X-CRM114-Status: GOOD ( 19.72 ) 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 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 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv