From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1E9CD14A60F for ; Thu, 14 Aug 2025 22:22:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755210178; cv=none; b=TgwSmdcIKX6ajfNslTFgh3fhy1yIv+bUVZhviTLbzi76cFzmo9bgwAsBxS3WdGvxgvc89TgbZcfZAh2QVXWmUeObCNN2jiA+KSxgUO3yFxD63rCuadFC5YCAKXu/e/DpATJKeK9tI4wF379r94lCfCoTfRCVGW9zMIRBs9bREi4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755210178; c=relaxed/simple; bh=d/CyOan2Q7QHgiWgmx1dW4u8meDRRpj19+iMmwfV4Uk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OjERFdpVoZWYvhs5P4BvDNjysDD5+4OKnefc5n1wIPG/gqgu5yiTQq8NJpW1g1U94Y4uHK2CMemVAsf+4yMNDwUOtvP2ArkCFLngXkAlQjEHhqv/EKF1mkUmuEbpe15w3JmtP1cOTIijvshG0ITer8oo+/voUp7tCgILukNb2TM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD536C4CEED; Thu, 14 Aug 2025 22:22:56 +0000 (UTC) From: Dave Jiang To: linux-cxl@vger.kernel.org Cc: dave@stgolabs.net, jonathan.cameron@huawei.com, alison.schofield@intel.com, vishal.l.verma@intel.com, ira.weiny@intel.com, dan.j.williams@intel.com, rrichter@amd.com, Li Ming Subject: [PATCH v8 06/11] cxl/test: Add cxl_test support for cxl_port_get_possible_dports() Date: Thu, 14 Aug 2025 15:21:46 -0700 Message-ID: <20250814222151.3520500-7-dave.jiang@intel.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250814222151.3520500-1-dave.jiang@intel.com> References: <20250814222151.3520500-1-dave.jiang@intel.com> Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In the delayed dport allocation scheme, the total possible number of dports need to be discovered during port probe. Add the mock function that does it for cxl_test. Reviewed-by: Jonathan Cameron Reviewed-by: Li Ming Reviewed-by: Dan Williams Tested-by: Alison Schofield Signed-off-by: Dave Jiang --- tools/testing/cxl/Kbuild | 1 + tools/testing/cxl/test/cxl.c | 48 +++++++++++++++++++++++++++++++++-- tools/testing/cxl/test/mock.c | 15 +++++++++++ tools/testing/cxl/test/mock.h | 1 + 4 files changed, 63 insertions(+), 2 deletions(-) diff --git a/tools/testing/cxl/Kbuild b/tools/testing/cxl/Kbuild index d07f14cb7aa4..e070cda6ca41 100644 --- a/tools/testing/cxl/Kbuild +++ b/tools/testing/cxl/Kbuild @@ -5,6 +5,7 @@ ldflags-y += --wrap=acpi_evaluate_integer ldflags-y += --wrap=acpi_pci_find_root ldflags-y += --wrap=nvdimm_bus_register ldflags-y += --wrap=devm_cxl_port_enumerate_dports +ldflags-y += --wrap=cxl_port_get_possible_dports ldflags-y += --wrap=devm_cxl_setup_hdm ldflags-y += --wrap=devm_cxl_add_passthrough_decoder ldflags-y += --wrap=devm_cxl_enumerate_decoders diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c index 8faf4143d04e..ecb12a29f3ac 100644 --- a/tools/testing/cxl/test/cxl.c +++ b/tools/testing/cxl/test/cxl.c @@ -921,10 +921,12 @@ static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm, return 0; } -static int mock_cxl_port_enumerate_dports(struct cxl_port *port) +static int get_port_array(struct cxl_port *port, + struct platform_device ***port_array, + int *port_array_size) { struct platform_device **array; - int i, array_size; + int array_size; if (port->depth == 1) { if (is_multi_bridge(port->uport_dev)) { @@ -958,6 +960,47 @@ static int mock_cxl_port_enumerate_dports(struct cxl_port *port) return -ENXIO; } + *port_array = array; + *port_array_size = array_size; + + return 0; +} + +static int mock_cxl_port_get_possible_dports(struct cxl_port *port) +{ + struct platform_device **array; + int rc, i, array_size; + int dports = 0; + + rc = get_port_array(port, &array, &array_size); + if (rc) + return rc; + + for (i = 0; i < array_size; i++) { + struct platform_device *pdev = array[i]; + + if (pdev->dev.parent != port->uport_dev) { + dev_dbg(&port->dev, "%s: mismatch parent %s\n", + dev_name(port->uport_dev), + dev_name(pdev->dev.parent)); + continue; + } + + dports++; + } + + return dports; +} + +static int mock_cxl_port_enumerate_dports(struct cxl_port *port) +{ + struct platform_device **array; + int rc, i, array_size; + + rc = get_port_array(port, &array, &array_size); + if (rc) + return rc; + for (i = 0; i < array_size; i++) { struct platform_device *pdev = array[i]; struct cxl_dport *dport; @@ -1036,6 +1079,7 @@ static struct cxl_mock_ops cxl_mock_ops = { .acpi_evaluate_integer = mock_acpi_evaluate_integer, .acpi_pci_find_root = mock_acpi_pci_find_root, .devm_cxl_port_enumerate_dports = mock_cxl_port_enumerate_dports, + .cxl_port_get_possible_dports = mock_cxl_port_get_possible_dports, .devm_cxl_setup_hdm = mock_cxl_setup_hdm, .devm_cxl_add_passthrough_decoder = mock_cxl_add_passthrough_decoder, .devm_cxl_enumerate_decoders = mock_cxl_enumerate_decoders, diff --git a/tools/testing/cxl/test/mock.c b/tools/testing/cxl/test/mock.c index 1989ae020df3..eefdc1f009c7 100644 --- a/tools/testing/cxl/test/mock.c +++ b/tools/testing/cxl/test/mock.c @@ -196,6 +196,21 @@ int __wrap_devm_cxl_port_enumerate_dports(struct cxl_port *port) } EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_port_enumerate_dports, "CXL"); +int __wrap_cxl_port_get_possible_dports(struct cxl_port *port) +{ + int dports, index; + struct cxl_mock_ops *ops = get_cxl_mock_ops(&index); + + if (ops && ops->is_mock_port(port->uport_dev)) + dports = ops->cxl_port_get_possible_dports(port); + else + dports = cxl_port_get_possible_dports(port); + put_cxl_mock_ops(index); + + return dports; +} +EXPORT_SYMBOL_NS_GPL(__wrap_cxl_port_get_possible_dports, "CXL"); + int __wrap_cxl_await_media_ready(struct cxl_dev_state *cxlds) { int rc, index; diff --git a/tools/testing/cxl/test/mock.h b/tools/testing/cxl/test/mock.h index d1b0271d2822..413abb2dcb14 100644 --- a/tools/testing/cxl/test/mock.h +++ b/tools/testing/cxl/test/mock.h @@ -20,6 +20,7 @@ struct cxl_mock_ops { bool (*is_mock_port)(struct device *dev); bool (*is_mock_dev)(struct device *dev); int (*devm_cxl_port_enumerate_dports)(struct cxl_port *port); + int (*cxl_port_get_possible_dports)(struct cxl_port *port); struct cxl_hdm *(*devm_cxl_setup_hdm)( struct cxl_port *port, struct cxl_endpoint_dvsec_info *info); int (*devm_cxl_add_passthrough_decoder)(struct cxl_port *port); -- 2.50.1