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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Feb 2025 08:17:33.8080 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 989a1ac2-8268-4f00-8588-08dd4a74896e 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: BL6PEPF00020E61.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6859 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 legacy interrupt is not support. Signed-off-by: Thippeswamy Havalige Acked-by: Conor Dooley --- 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 Thu Dec 18 01:54:39 2025 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2082.outbound.protection.outlook.com [40.107.93.82]) (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 682751F03CD; Tue, 11 Feb 2025 08:17:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Feb 2025 08:17:38.1289 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 64422522-f108-4719-d5cd-08dd4a748c01 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: BL6PEPF00020E66.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7549 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. Legacy interrupt support is not available. Currently in this patch Bridge errors support is not added. Signed-off-by: Thippeswamy Havalige --- drivers/pci/controller/pcie-xilinx-cpm.c | 85 ++++++++++++++---------- 1 file changed, 51 insertions(+), 34 deletions(-) diff --git a/drivers/pci/controller/pcie-xilinx-cpm.c b/drivers/pci/control= ler/pcie-xilinx-cpm.c index 81e8bfae53d0..c26ba662efd7 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 /** @@ -483,31 +484,33 @@ static void xilinx_cpm_pcie_init_port(struct xilinx_c= pm_pcie *port) else dev_info(port->dev, "PCIe Link is DOWN\n"); =20 - /* Disable all interrupts */ - pcie_write(port, ~XILINX_CPM_PCIE_IDR_ALL_MASK, - XILINX_CPM_PCIE_REG_IMR); - - /* Clear pending interrupts */ - pcie_write(port, pcie_read(port, XILINX_CPM_PCIE_REG_IDR) & - XILINX_CPM_PCIE_IMR_ALL_MASK, - XILINX_CPM_PCIE_REG_IDR); - - /* - * 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); + if (variant->version !=3D CPM5NC_HOST) { + /* Disable all interrupts */ + pcie_write(port, ~XILINX_CPM_PCIE_IDR_ALL_MASK, + XILINX_CPM_PCIE_REG_IMR); + + /* Clear pending interrupts */ + pcie_write(port, pcie_read(port, XILINX_CPM_PCIE_REG_IDR) & + XILINX_CPM_PCIE_IMR_ALL_MASK, + XILINX_CPM_PCIE_REG_IDR); + + /* + * 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); + + if (variant->ir_enable) { + writel(XILINX_CPM_PCIE_IR_LOCAL, + port->cpm_base + variant->ir_enable); + } =20 - if (variant->ir_enable) { - writel(XILINX_CPM_PCIE_IR_LOCAL, - port->cpm_base + variant->ir_enable); + /* 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); } - - /* 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); } =20 /** @@ -578,16 +581,18 @@ 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 +601,12 @@ 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 +619,13 @@ 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 +648,10 @@ 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 +665,10 @@ 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