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
riscv_iommu_pci_get_driver(void * obj,const char * interface)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
riscv_iommu_pci_start_hw(QOSGraphObject * obj)30 static void riscv_iommu_pci_start_hw(QOSGraphObject *obj)
31 {
32 QRISCVIOMMU *pci = (QRISCVIOMMU *)obj;
33 qpci_device_enable(&pci->dev);
34 }
35
riscv_iommu_pci_destructor(QOSGraphObject * obj)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
riscv_iommu_pci_create(void * pci_bus,QGuestAllocator * alloc,void * addr)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
riscv_iommu_pci_register_nodes(void)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);
77