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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Feb 2025 07:27:28.3461 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1e61153a-ad2d-44a8-ec57-08dd4f248883 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: SA2PEPF00001504.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7497 Content-Type: text/plain; charset="utf-8" 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 =20 reg: items: --=20 2.43.0 From nobody Sun Feb 8 16:13:35 2026 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on2061.outbound.protection.outlook.com [40.107.92.61]) (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 7397C194A6C; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Feb 2025 07:28:04.1327 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1148b044-51b5-48c9-8b0c-08dd4f249dd8 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: SA2PEPF00001509.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8509 Content-Type: text/plain; charset="utf-8" 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 --- Changes in v2: - Update commit message. --- drivers/pci/controller/pcie-xilinx-cpm.c | 48 ++++++++++++++++-------- 1 file changed, 32 insertions(+), 16 deletions(-) diff --git a/drivers/pci/controller/pcie-xilinx-cpm.c b/drivers/pci/control= ler/pcie-xilinx-cpm.c index 81e8bfae53d0..9b241c665f0a 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, }; =20 /** @@ -478,6 +479,9 @@ static void xilinx_cpm_pcie_init_port(struct xilinx_cpm= _pcie *port) { const struct xilinx_cpm_variant *variant =3D port->variant; =20 + if (variant->version !=3D CPM5NC_HOST) + return; + if (cpm_pcie_link_up(port)) dev_info(port->dev, "PCIe Link is UP\n"); else @@ -493,18 +497,16 @@ static void xilinx_cpm_pcie_init_port(struct xilinx_c= pm_pcie *port) XILINX_CPM_PCIE_REG_IDR); =20 /* - * XILINX_CPM_PCIE_MISC_IR_ENABLE register is mapped to - * CPM SLCR block. + * XILINX_CPM_PCIE_MISC_IR_ENABLE register is mapped to CPM SLCR block. */ writel(variant->ir_misc_value, port->cpm_base + XILINX_CPM_PCIE_MISC_IR_ENABLE); =20 - if (variant->ir_enable) { + if (variant->ir_enable) writel(XILINX_CPM_PCIE_IR_LOCAL, port->cpm_base + variant->ir_enable); - } =20 - /* Set Bridge enable bit */ + /* Set Bridge enable bit */ pcie_write(port, pcie_read(port, XILINX_CPM_PCIE_REG_RPSC) | XILINX_CPM_PCIE_REG_RPSC_BEN, XILINX_CPM_PCIE_REG_RPSC); @@ -578,16 +580,18 @@ static int xilinx_cpm_pcie_probe(struct platform_devi= ce *pdev) =20 port->dev =3D dev; =20 - err =3D xilinx_cpm_pcie_init_irq_domain(port); - if (err) - return err; + port->variant =3D of_device_get_match_data(dev); + + if (port->variant->version !=3D CPM5NC_HOST) { + err =3D xilinx_cpm_pcie_init_irq_domain(port); + if (err) + return err; + } =20 bus =3D resource_list_first_type(&bridge->windows, IORESOURCE_BUS); if (!bus) return -ENODEV; =20 - port->variant =3D of_device_get_match_data(dev); - err =3D xilinx_cpm_pcie_parse_dt(port, bus->res); if (err) { dev_err(dev, "Parsing DT failed\n"); @@ -596,10 +600,12 @@ static int xilinx_cpm_pcie_probe(struct platform_devi= ce *pdev) =20 xilinx_cpm_pcie_init_port(port); =20 - err =3D xilinx_cpm_setup_irq(port); - if (err) { - dev_err(dev, "Failed to set up interrupts\n"); - goto err_setup_irq; + if (port->variant->version !=3D CPM5NC_HOST) { + err =3D xilinx_cpm_setup_irq(port); + if (err) { + dev_err(dev, "Failed to set up interrupts\n"); + goto err_setup_irq; + } } =20 bridge->sysdata =3D port->cfg; @@ -612,11 +618,13 @@ static int xilinx_cpm_pcie_probe(struct platform_devi= ce *pdev) return 0; =20 err_host_bridge: - xilinx_cpm_free_interrupts(port); + if (port->variant->version !=3D 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 !=3D CPM5NC_HOST) + xilinx_cpm_free_irq_domains(port); return err; } =20 @@ -639,6 +647,10 @@ static const struct xilinx_cpm_variant cpm5_host1 =3D { .ir_enable =3D XILINX_CPM_PCIE1_IR_ENABLE, }; =20 +static const struct xilinx_cpm_variant cpm5n_host =3D { + .version =3D CPM5NC_HOST, +}; + static const struct of_device_id xilinx_cpm_pcie_of_match[] =3D { { .compatible =3D "xlnx,versal-cpm-host-1.00", @@ -652,6 +664,10 @@ static const struct of_device_id xilinx_cpm_pcie_of_ma= tch[] =3D { .compatible =3D "xlnx,versal-cpm5-host1", .data =3D &cpm5_host1, }, + { + .compatible =3D "xlnx,versal-cpm5nc-host", + .data =3D &cpm5n_host, + }, {} }; =20 --=20 2.43.0