tests/qtest/libqos/riscv-virt-machine.c

   1 /*
   2  * libqos driver framework for risc-v
   3  *
   4  * Initial version based on arm-virt-machine.c
   5  *
   6  * Copyright (c) 2024 Ventana Micro
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License version 2.1 as published by the Free Software Foundation.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, see <http://www.gnu.org/licenses/>
  19  */
  20
  21 #include "qemu/osdep.h"
  22 #include "../libqtest.h"
  23 #include "qemu/module.h"
  24 #include "libqos-malloc.h"
  25 #include "qgraph.h"
  26 #include "virtio-mmio.h"
  27 #include "generic-pcihost.h"
  28 #include "hw/pci/pci_regs.h"
  29
  30 #define RISCV_PAGE_SIZE            4096
  31
  32 /* VIRT_DRAM */
  33 #define RISCV_VIRT_RAM_ADDR        0x80000000
  34 #define RISCV_VIRT_RAM_SIZE        0x20000000
  35
  36 /*
  37  * VIRT_VIRTIO. BASE_ADDR  points to the last
  38  * virtio_mmio device.
  39  */
  40 #define VIRTIO_MMIO_BASE_ADDR      0x10008000
  41 #define VIRTIO_MMIO_SIZE           0x00001000
  42
  43 /* VIRT_PCIE_PIO  */
  44 #define RISCV_GPEX_PIO_BASE        0x3000000
  45 #define RISCV_BUS_PIO_LIMIT        0x10000
  46
  47 /* VIRT_PCIE_MMIO */
  48 #define RISCV_BUS_MMIO_ALLOC_PTR   0x40000000
  49 #define RISCV_BUS_MMIO_LIMIT       0x80000000
  50
  51 /* VIRT_PCIE_ECAM */
  52 #define RISCV_ECAM_ALLOC_PTR   0x30000000
  53
  54 typedef struct QVirtMachine QVirtMachine;
  55
  56 struct QVirtMachine {
  57     QOSGraphObject obj;
  58     QGuestAllocator alloc;
  59     QVirtioMMIODevice virtio_mmio;
  60     QGenericPCIHost bridge;
  61 };
  62
  63 static void virt_destructor(QOSGraphObject *obj)
  64 {
  65     QVirtMachine *machine = (QVirtMachine *) obj;
  66     alloc_destroy(&machine->alloc);
  67 }
  68
  69 static void *virt_get_driver(void *object, const char *interface)
  70 {
  71     QVirtMachine *machine = object;
  72     if (!g_strcmp0(interface, "memory")) {
  73         return &machine->alloc;
  74     }
  75
  76     fprintf(stderr, "%s not present in riscv/virtio\n", interface);
  77     g_assert_not_reached();
  78 }
  79
  80 static QOSGraphObject *virt_get_device(void *obj, const char *device)
  81 {
  82     QVirtMachine *machine = obj;
  83     if (!g_strcmp0(device, "generic-pcihost")) {
  84         return &machine->bridge.obj;
  85     } else if (!g_strcmp0(device, "virtio-mmio")) {
  86         return &machine->virtio_mmio.obj;
  87     }
  88
  89     fprintf(stderr, "%s not present in riscv/virt\n", device);
  90     g_assert_not_reached();
  91 }
  92
  93 static void riscv_config_qpci_bus(QGenericPCIBus *qpci)
  94 {
  95     qpci->gpex_pio_base = RISCV_GPEX_PIO_BASE;
  96     qpci->bus.pio_limit = RISCV_BUS_PIO_LIMIT;
  97
  98     qpci->bus.mmio_alloc_ptr = RISCV_BUS_MMIO_ALLOC_PTR;
  99     qpci->bus.mmio_limit = RISCV_BUS_MMIO_LIMIT;
 100
 101     qpci->ecam_alloc_ptr = RISCV_ECAM_ALLOC_PTR;
 102 }
 103
 104 static void *qos_create_machine_riscv_virt(QTestState *qts)
 105 {
 106     QVirtMachine *machine = g_new0(QVirtMachine, 1);
 107
 108     alloc_init(&machine->alloc, 0,
 109                RISCV_VIRT_RAM_ADDR,
 110                RISCV_VIRT_RAM_ADDR + RISCV_VIRT_RAM_SIZE,
 111                RISCV_PAGE_SIZE);
 112     qvirtio_mmio_init_device(&machine->virtio_mmio, qts, VIRTIO_MMIO_BASE_ADDR,
 113                               VIRTIO_MMIO_SIZE);
 114
 115     qos_create_generic_pcihost(&machine->bridge, qts, &machine->alloc);
 116     riscv_config_qpci_bus(&machine->bridge.pci);
 117
 118     machine->obj.get_device = virt_get_device;
 119     machine->obj.get_driver = virt_get_driver;
 120     machine->obj.destructor = virt_destructor;
 121     return machine;
 122 }
 123
 124 static void virt_machine_register_nodes(void)
 125 {
 126     qos_node_create_machine_args("riscv32/virt", qos_create_machine_riscv_virt,
 127                                  "aclint=on,aia=aplic-imsic");
 128     qos_node_contains("riscv32/virt", "virtio-mmio", NULL);
 129     qos_node_contains("riscv32/virt", "generic-pcihost", NULL);
 130
 131     qos_node_create_machine_args("riscv64/virt", qos_create_machine_riscv_virt,
 132                                  "aclint=on,aia=aplic-imsic");
 133     qos_node_contains("riscv64/virt", "virtio-mmio", NULL);
 134     qos_node_contains("riscv64/virt", "generic-pcihost", NULL);
 135 }
 136
 137 libqos_init(virt_machine_register_nodes);