2168ed8e7d
PCI/PCIe have better performance and more devices support, such as NVMe, GPU, Powerful NIC (Like RDMA). PCI/PCIe can access control by IOMMU that the virtualiztion and userspace driver will more safety. PCI/PCIe device could hot plugging, no design modifications SoC required, PCI/PCIe on Embedded SoC is popular now. We make a simple framework to support them. Feature Lists: 1.PCI INTx: the INT[A-D] pin IRQ for legacy PCI, work with platform PIC. 2.MSI/MSI-X: the message write IRQ for PCIe, work with platform's PIC. 3.PME: we only support the D0, D1, D2, D3HOT, D3COLD init by framework. 4.Endpoint: a simple EP framework for PCI FPGA or NTB function. 5.OFW: we only support work on OFW SoC, ACPI support in the future maybe. Host controller: 1. Common PCI host controller on ECAM. 2. Generic PCI host controller on ECAM. Signed-off-by: GuEe-GUI <2991707448@qq.com>
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
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* Copyright (c) 2006-2022, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2022-10-24 GuEe-GUI first version
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*/
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#include <rtthread.h>
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#include "../ecam.h"
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static const struct pci_ecam_ops gen_pci_cfg_cam_bus_ops =
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{
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.bus_shift = 16,
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.pci_ops =
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{
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.map = pci_ecam_map,
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.read = rt_pci_bus_read_config_uxx,
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.write = rt_pci_bus_write_config_uxx,
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}
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};
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static void *pci_dw_ecam_map_bus(struct rt_pci_bus *bus, rt_uint32_t devfn, int where)
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{
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struct pci_ecam_config_window *conf_win = bus->sysdata;
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if (bus->number == conf_win->bus_range[0] && RT_PCI_SLOT(devfn) > 0)
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{
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return RT_NULL;
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}
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return pci_ecam_map(bus, devfn, where);
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}
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static const struct pci_ecam_ops pci_dw_ecam_bus_ops =
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{
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.pci_ops =
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{
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.map = pci_dw_ecam_map_bus,
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.read = rt_pci_bus_read_config_uxx,
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.write = rt_pci_bus_write_config_uxx,
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}
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};
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static const struct rt_ofw_node_id gen_pci_ofw_ids[] =
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{
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{ .compatible = "pci-host-cam-generic", .data = &gen_pci_cfg_cam_bus_ops },
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{ .compatible = "pci-host-ecam-generic", .data = &pci_generic_ecam_ops },
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{ .compatible = "marvell,armada8k-pcie-ecam", .data = &pci_dw_ecam_bus_ops },
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{ .compatible = "socionext,synquacer-pcie-ecam", .data = &pci_dw_ecam_bus_ops },
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{ .compatible = "snps,dw-pcie-ecam", .data = &pci_dw_ecam_bus_ops },
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{ /* sentinel */ }
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};
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static struct rt_platform_driver gen_pci_driver =
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{
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.name = "pci-host-generic",
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.ids = gen_pci_ofw_ids,
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.probe = pci_host_common_probe,
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.remove = pci_host_common_remove,
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};
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RT_PLATFORM_DRIVER_EXPORT(gen_pci_driver);
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