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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2025 07:41:53.0775 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 75684cea-f50d-4932-ed63-08dd54a6b4ce X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A101.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6933 The Xilinx Versal Net series has Coherency and PCIe Gen5 Module Next-Generation compact (CPM5NC) block which supports Root Port controller functionality at Gen5 speed. Error interrupts are handled CPM5NC specific interrupt line and INTx interrupt is not support. Signed-off-by: Thippeswamy Havalige Acked-by: Conor Dooley Acked-by: Manivannan Sadhasivam --- Changes in v2: - Update commit message to INTx Changes in v3: - None --- Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml index b63a759ec2d7..d674a24c8ccc 100644 --- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml +++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml @@ -18,6 +18,7 @@ properties: - xlnx,versal-cpm-host-1.00 - xlnx,versal-cpm5-host - xlnx,versal-cpm5-host1 + - xlnx,versal-cpm5nc-host reg: items: From patchwork Mon Feb 24 07:41:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Havalige, Thippeswamy" X-Patchwork-Id: 13987510 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2075.outbound.protection.outlook.com [40.107.93.75]) (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 C508918FC9F; 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Mon, 24 Feb 2025 01:41:56 -0600 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB06.amd.com (10.181.40.147) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Mon, 24 Feb 2025 01:41:56 -0600 Received: from xhdthippesw40.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.39 via Frontend Transport; Mon, 24 Feb 2025 01:41:52 -0600 From: Thippeswamy Havalige To: , , , , , , CC: , , , , , Thippeswamy Havalige Subject: [PATCH v4 2/2] PCI: xilinx-cpm: Add support for Versal Net CPM5NC Root Port controller Date: Mon, 24 Feb 2025 13:11:43 +0530 Message-ID: <20250224074143.767442-3-thippeswamy.havalige@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250224074143.767442-1-thippeswamy.havalige@amd.com> References: <20250224074143.767442-1-thippeswamy.havalige@amd.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D2:EE_|CH3PR12MB8754:EE_ X-MS-Office365-Filtering-Correlation-Id: 2476fcc3-3dee-4a95-a771-08dd54a6b777 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|82310400026|1800799024|36860700013; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2025 07:41:57.4136 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2476fcc3-3dee-4a95-a771-08dd54a6b777 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D2.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8754 The Versal Net ACAP (Adaptive Compute Acceleration Platform) devices incorporate the Coherency and PCIe Gen5 Module, specifically the Next-Generation Compact Module (CPM5NC). The integrated CPM5NC block, along with the built-in bridge, can function as a PCIe Root Port & supports the PCIe Gen5 protocol with data transfer rates of up to 32 GT/s, capable of supporting up to a x16 lane-width configuration. Bridge errors are managed using a specific interrupt line designed for CPM5N. INTx interrupt support is not available. Currently in this commit platform specific Bridge errors support is not added. Signed-off-by: Thippeswamy Havalige Reviewed-by: Manivannan Sadhasivam Reviewed-by: Manivannan Sadhasivam --- Changes in v2: - Update commit message. Changes in v3: - Address review comments. --- drivers/pci/controller/pcie-xilinx-cpm.c | 40 +++++++++++++++++------- 1 file changed, 29 insertions(+), 11 deletions(-) diff --git a/drivers/pci/controller/pcie-xilinx-cpm.c b/drivers/pci/controller/pcie-xilinx-cpm.c index 81e8bfae53d0..a0815c5010d9 100644 --- a/drivers/pci/controller/pcie-xilinx-cpm.c +++ b/drivers/pci/controller/pcie-xilinx-cpm.c @@ -84,6 +84,7 @@ enum xilinx_cpm_version { CPM, CPM5, CPM5_HOST1, + CPM5NC_HOST, }; /** @@ -478,6 +479,9 @@ static void xilinx_cpm_pcie_init_port(struct xilinx_cpm_pcie *port) { const struct xilinx_cpm_variant *variant = port->variant; + if (variant->version != CPM5NC_HOST) + return; + if (cpm_pcie_link_up(port)) dev_info(port->dev, "PCIe Link is UP\n"); else @@ -578,16 +582,18 @@ static int xilinx_cpm_pcie_probe(struct platform_device *pdev) port->dev = dev; - err = xilinx_cpm_pcie_init_irq_domain(port); - if (err) - return err; + port->variant = of_device_get_match_data(dev); + + if (port->variant->version != CPM5NC_HOST) { + err = xilinx_cpm_pcie_init_irq_domain(port); + if (err) + return err; + } bus = resource_list_first_type(&bridge->windows, IORESOURCE_BUS); if (!bus) return -ENODEV; - port->variant = of_device_get_match_data(dev); - err = xilinx_cpm_pcie_parse_dt(port, bus->res); if (err) { dev_err(dev, "Parsing DT failed\n"); @@ -596,10 +602,12 @@ static int xilinx_cpm_pcie_probe(struct platform_device *pdev) xilinx_cpm_pcie_init_port(port); - err = xilinx_cpm_setup_irq(port); - if (err) { - dev_err(dev, "Failed to set up interrupts\n"); - goto err_setup_irq; + if (port->variant->version != CPM5NC_HOST) { + err = xilinx_cpm_setup_irq(port); + if (err) { + dev_err(dev, "Failed to set up interrupts\n"); + goto err_setup_irq; + } } bridge->sysdata = port->cfg; @@ -612,11 +620,13 @@ static int xilinx_cpm_pcie_probe(struct platform_device *pdev) return 0; err_host_bridge: - xilinx_cpm_free_interrupts(port); + if (port->variant->version != CPM5NC_HOST) + xilinx_cpm_free_interrupts(port); err_setup_irq: pci_ecam_free(port->cfg); err_parse_dt: - xilinx_cpm_free_irq_domains(port); + if (port->variant->version != CPM5NC_HOST) + xilinx_cpm_free_irq_domains(port); return err; } @@ -639,6 +649,10 @@ static const struct xilinx_cpm_variant cpm5_host1 = { .ir_enable = XILINX_CPM_PCIE1_IR_ENABLE, }; +static const struct xilinx_cpm_variant cpm5n_host = { + .version = CPM5NC_HOST, +}; + static const struct of_device_id xilinx_cpm_pcie_of_match[] = { { .compatible = "xlnx,versal-cpm-host-1.00", @@ -652,6 +666,10 @@ static const struct of_device_id xilinx_cpm_pcie_of_match[] = { .compatible = "xlnx,versal-cpm5-host1", .data = &cpm5_host1, }, + { + .compatible = "xlnx,versal-cpm5nc-host", + .data = &cpm5n_host, + }, {} };