| 1 | /* |
| 2 | * libqos driver riscv-iommu-pci framework |
| 3 | * |
| 4 | * Copyright (c) 2024 Ventana Micro Systems Inc. |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or (at your |
| 7 | * option) any later version. See the COPYING file in the top-level directory. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | #include "qemu/osdep.h" |
| 12 | #include "../libqtest.h" |
| 13 | #include "qemu/module.h" |
| 14 | #include "qgraph.h" |
| 15 | #include "pci.h" |
| 16 | #include "riscv-iommu.h" |
| 17 | |
| 18 | static void *riscv_iommu_pci_get_driver(void *obj, const char *interface) |
| 19 | { |
| 20 | QRISCVIOMMU *r_iommu_pci = obj; |
| 21 | |
| 22 | if (!g_strcmp0(interface, "pci-device")) { |
| 23 | return &r_iommu_pci->dev; |
| 24 | } |
| 25 | |
| 26 | fprintf(stderr, "%s not present in riscv_iommu_pci\n", interface); |
| 27 | g_assert_not_reached(); |
| 28 | } |
| 29 | |
| 30 | static void riscv_iommu_pci_start_hw(QOSGraphObject *obj) |
| 31 | { |
| 32 | QRISCVIOMMU *pci = (QRISCVIOMMU *)obj; |
| 33 | qpci_device_enable(&pci->dev); |
| 34 | } |
| 35 | |
| 36 | static void riscv_iommu_pci_destructor(QOSGraphObject *obj) |
| 37 | { |
| 38 | QRISCVIOMMU *pci = (QRISCVIOMMU *)obj; |
| 39 | qpci_iounmap(&pci->dev, pci->reg_bar); |
| 40 | } |
| 41 | |
| 42 | static void *riscv_iommu_pci_create(void *pci_bus, QGuestAllocator *alloc, |
| 43 | void *addr) |
| 44 | { |
| 45 | QRISCVIOMMU *r_iommu_pci = g_new0(QRISCVIOMMU, 1); |
| 46 | QPCIBus *bus = pci_bus; |
| 47 | |
| 48 | qpci_device_init(&r_iommu_pci->dev, bus, addr); |
| 49 | r_iommu_pci->reg_bar = qpci_iomap(&r_iommu_pci->dev, 0, NULL); |
| 50 | |
| 51 | r_iommu_pci->obj.get_driver = riscv_iommu_pci_get_driver; |
| 52 | r_iommu_pci->obj.start_hw = riscv_iommu_pci_start_hw; |
| 53 | r_iommu_pci->obj.destructor = riscv_iommu_pci_destructor; |
| 54 | return &r_iommu_pci->obj; |
| 55 | } |
| 56 | |
| 57 | static void riscv_iommu_pci_register_nodes(void) |
| 58 | { |
| 59 | QPCIAddress addr = { |
| 60 | .vendor_id = RISCV_IOMMU_PCI_VENDOR_ID, |
| 61 | .device_id = RISCV_IOMMU_PCI_DEVICE_ID, |
| 62 | .devfn = QPCI_DEVFN(1, 0), |
| 63 | }; |
| 64 | |
| 65 | QOSGraphEdgeOptions opts = { |
| 66 | .extra_device_opts = "addr=01.0", |
| 67 | }; |
| 68 | |
| 69 | add_qpci_address(&opts, &addr); |
| 70 | |
| 71 | qos_node_create_driver("riscv-iommu-pci", riscv_iommu_pci_create); |
| 72 | qos_node_produces("riscv-iommu-pci", "pci-device"); |
| 73 | qos_node_consumes("riscv-iommu-pci", "pci-bus", &opts); |
| 74 | } |
| 75 | |
| 76 | libqos_init(riscv_iommu_pci_register_nodes); |