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Thu, 28 Mar 2024 09:18:53 +0000 Received: from SHXPR01MB0863.CHNPR01.prod.partner.outlook.cn ([fe80::c738:9e6b:f92e:8bb9]) by SHXPR01MB0863.CHNPR01.prod.partner.outlook.cn ([fe80::c738:9e6b:f92e:8bb9%6]) with mapi id 15.20.7409.031; Thu, 28 Mar 2024 09:18:52 +0000 From: Minda Chen To: Lorenzo Pieralisi , Conor Dooley , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Thomas Gleixner , Daire McNamara , Emil Renner Berthing , Krzysztof Kozlowski Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-pci@vger.kernel.org, Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Mason Huo , Leyfoon Tan , Kevin Xie , Minda Chen Subject: [PATCH v16 09/22] PCI: microchip: Move setup functions to pcie-plda-host.c Date: Thu, 28 Mar 2024 17:18:22 +0800 Message-Id: <20240328091835.14797-10-minda.chen@starfivetech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240328091835.14797-1-minda.chen@starfivetech.com> References: <20240328091835.14797-1-minda.chen@starfivetech.com> X-ClientProxiedBy: NT0PR01CA0020.CHNPR01.prod.partner.outlook.cn (2406:e500:c510:c::16) To SHXPR01MB0863.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:25::15) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SHXPR01MB0863:EE_|SHXPR01MB0559:EE_ X-MS-Office365-Filtering-Correlation-Id: 418e8d19-a7e9-4d7d-8693-08dc4f081607 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; 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So these two functions can be re-used. Signed-off-by: Minda Chen Reviewed-by: Conor Dooley --- MAINTAINERS | 1 + drivers/pci/controller/plda/Kconfig | 4 + drivers/pci/controller/plda/Makefile | 1 + .../pci/controller/plda/pcie-microchip-host.c | 59 --------------- drivers/pci/controller/plda/pcie-plda-host.c | 73 +++++++++++++++++++ drivers/pci/controller/plda/pcie-plda.h | 5 ++ 6 files changed, 84 insertions(+), 59 deletions(-) create mode 100644 drivers/pci/controller/plda/pcie-plda-host.c diff --git a/MAINTAINERS b/MAINTAINERS index 1fa4d61291f9..d85d9db38efa 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -16951,6 +16951,7 @@ M: Daire McNamara L: linux-pci@vger.kernel.org S: Maintained F: Documentation/devicetree/bindings/pci/plda,xpressrich3-axi-common.yaml +F: drivers/pci/controller/plda/pcie-plda-host.c F: drivers/pci/controller/plda/pcie-plda.h PCI DRIVER FOR RENESAS R-CAR diff --git a/drivers/pci/controller/plda/Kconfig b/drivers/pci/controller/plda/Kconfig index 5cb3be4fc98c..e54a82ee94f5 100644 --- a/drivers/pci/controller/plda/Kconfig +++ b/drivers/pci/controller/plda/Kconfig @@ -3,10 +3,14 @@ menu "PLDA-based PCIe controllers" depends on PCI +config PCIE_PLDA_HOST + bool + config PCIE_MICROCHIP_HOST tristate "Microchip AXI PCIe controller" depends on PCI_MSI && OF select PCI_HOST_COMMON + select PCIE_PLDA_HOST help Say Y here if you want kernel to support the Microchip AXI PCIe Host Bridge driver. diff --git a/drivers/pci/controller/plda/Makefile b/drivers/pci/controller/plda/Makefile index e1a265cbf91c..4340ab007f44 100644 --- a/drivers/pci/controller/plda/Makefile +++ b/drivers/pci/controller/plda/Makefile @@ -1,2 +1,3 @@ # SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_PCIE_PLDA_HOST) += pcie-plda-host.o obj-$(CONFIG_PCIE_MICROCHIP_HOST) += pcie-microchip-host.o diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c index 805870aed61d..573ad31c578a 100644 --- a/drivers/pci/controller/plda/pcie-microchip-host.c +++ b/drivers/pci/controller/plda/pcie-microchip-host.c @@ -838,65 +838,6 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port) return mc_allocate_msi_domains(port); } -static void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index, - phys_addr_t axi_addr, phys_addr_t pci_addr, - size_t size) -{ - u32 atr_sz = ilog2(size) - 1; - u32 val; - - if (index == 0) - val = PCIE_CONFIG_INTERFACE; - else - val = PCIE_TX_RX_INTERFACE; - - writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + - ATR0_AXI4_SLV0_TRSL_PARAM); - - val = lower_32_bits(axi_addr) | (atr_sz << ATR_SIZE_SHIFT) | - ATR_IMPL_ENABLE; - writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + - ATR0_AXI4_SLV0_SRCADDR_PARAM); - - val = upper_32_bits(axi_addr); - writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + - ATR0_AXI4_SLV0_SRC_ADDR); - - val = lower_32_bits(pci_addr); - writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + - ATR0_AXI4_SLV0_TRSL_ADDR_LSB); - - val = upper_32_bits(pci_addr); - writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + - ATR0_AXI4_SLV0_TRSL_ADDR_UDW); - - val = readl(bridge_base_addr + ATR0_PCIE_WIN0_SRCADDR_PARAM); - val |= (ATR0_PCIE_ATR_SIZE << ATR0_PCIE_ATR_SIZE_SHIFT); - writel(val, bridge_base_addr + ATR0_PCIE_WIN0_SRCADDR_PARAM); - writel(0, bridge_base_addr + ATR0_PCIE_WIN0_SRC_ADDR); -} - -static int plda_pcie_setup_iomems(struct pci_host_bridge *bridge, - struct plda_pcie_rp *port) -{ - void __iomem *bridge_base_addr = port->bridge_addr; - struct resource_entry *entry; - u64 pci_addr; - u32 index = 1; - - resource_list_for_each_entry(entry, &bridge->windows) { - if (resource_type(entry->res) == IORESOURCE_MEM) { - pci_addr = entry->res->start - entry->offset; - plda_pcie_setup_window(bridge_base_addr, index, - entry->res->start, pci_addr, - resource_size(entry->res)); - index++; - } - } - - return 0; -} - static inline void mc_clear_secs(struct mc_pcie *port) { void __iomem *ctrl_base_addr = port->axi_base_addr + MC_PCIE_CTRL_ADDR; diff --git a/drivers/pci/controller/plda/pcie-plda-host.c b/drivers/pci/controller/plda/pcie-plda-host.c new file mode 100644 index 000000000000..05ea68baebfb --- /dev/null +++ b/drivers/pci/controller/plda/pcie-plda-host.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PLDA PCIe XpressRich host controller driver + * + * Copyright (C) 2023 Microchip Co. Ltd + * + * Author: Daire McNamara + */ + +#include + +#include "pcie-plda.h" + +void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index, + phys_addr_t axi_addr, phys_addr_t pci_addr, + size_t size) +{ + u32 atr_sz = ilog2(size) - 1; + u32 val; + + if (index == 0) + val = PCIE_CONFIG_INTERFACE; + else + val = PCIE_TX_RX_INTERFACE; + + writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + + ATR0_AXI4_SLV0_TRSL_PARAM); + + val = lower_32_bits(axi_addr) | (atr_sz << ATR_SIZE_SHIFT) | + ATR_IMPL_ENABLE; + writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + + ATR0_AXI4_SLV0_SRCADDR_PARAM); + + val = upper_32_bits(axi_addr); + writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + + ATR0_AXI4_SLV0_SRC_ADDR); + + val = lower_32_bits(pci_addr); + writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + + ATR0_AXI4_SLV0_TRSL_ADDR_LSB); + + val = upper_32_bits(pci_addr); + writel(val, bridge_base_addr + (index * ATR_ENTRY_SIZE) + + ATR0_AXI4_SLV0_TRSL_ADDR_UDW); + + val = readl(bridge_base_addr + ATR0_PCIE_WIN0_SRCADDR_PARAM); + val |= (ATR0_PCIE_ATR_SIZE << ATR0_PCIE_ATR_SIZE_SHIFT); + writel(val, bridge_base_addr + ATR0_PCIE_WIN0_SRCADDR_PARAM); + writel(0, bridge_base_addr + ATR0_PCIE_WIN0_SRC_ADDR); +} +EXPORT_SYMBOL_GPL(plda_pcie_setup_window); + +int plda_pcie_setup_iomems(struct pci_host_bridge *bridge, + struct plda_pcie_rp *port) +{ + void __iomem *bridge_base_addr = port->bridge_addr; + struct resource_entry *entry; + u64 pci_addr; + u32 index = 1; + + resource_list_for_each_entry(entry, &bridge->windows) { + if (resource_type(entry->res) == IORESOURCE_MEM) { + pci_addr = entry->res->start - entry->offset; + plda_pcie_setup_window(bridge_base_addr, index, + entry->res->start, pci_addr, + resource_size(entry->res)); + index++; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(plda_pcie_setup_iomems); diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h index 9ca66916c609..e277a5452b5d 100644 --- a/drivers/pci/controller/plda/pcie-plda.h +++ b/drivers/pci/controller/plda/pcie-plda.h @@ -126,4 +126,9 @@ struct plda_pcie_rp { void __iomem *bridge_addr; }; +void plda_pcie_setup_window(void __iomem *bridge_base_addr, u32 index, + phys_addr_t axi_addr, phys_addr_t pci_addr, + size_t size); +int plda_pcie_setup_iomems(struct pci_host_bridge *bridge, + struct plda_pcie_rp *port); #endif