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hw/riscv/virt.c: add virtio-iommu-pci hotplug support

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We want to add a RISC-V 'virt' libqos machine to increase our test
coverage. Some of the tests will try to plug a virtio-iommu-pci
device into the board and do some tests with it.

Enable virtio-iommu-pci in the 'virt' machine.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20240217192607.32565-5-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Daniel Henrique Barboza 2024-02-17 16:26:05 -03:00 committed by Alistair Francis
parent 3fe8896536
commit 7778cdddda
1 changed files with 35 additions and 1 deletions
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36
hw/riscv/virt.c
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@ -53,6 +53,7 @@
#include "hw/display/ramfb.h"
#include "hw/acpi/aml-build.h"
#include "qapi/qapi-visit-common.h"
#include "hw/virtio/virtio-iommu.h"
/* KVM AIA only supports APLIC MSI. APLIC Wired is always emulated by QEMU. */
static bool virt_use_kvm_aia(RISCVVirtState *s)
@ -971,6 +972,34 @@ static void create_fdt_fw_cfg(RISCVVirtState *s, const MemMapEntry *memmap)
qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
}
static void create_fdt_virtio_iommu(RISCVVirtState *s, uint16_t bdf)
{
const char compat[] = "virtio,pci-iommu\0pci1af4,1057";
void *fdt = MACHINE(s)->fdt;
uint32_t iommu_phandle;
g_autofree char *iommu_node = NULL;
g_autofree char *pci_node = NULL;
pci_node = g_strdup_printf("/soc/pci@%lx",
(long) virt_memmap[VIRT_PCIE_ECAM].base);
iommu_node = g_strdup_printf("%s/virtio_iommu@%x,%x", pci_node,
PCI_SLOT(bdf), PCI_FUNC(bdf));
iommu_phandle = qemu_fdt_alloc_phandle(fdt);
qemu_fdt_add_subnode(fdt, iommu_node);
qemu_fdt_setprop(fdt, iommu_node, "compatible", compat, sizeof(compat));
qemu_fdt_setprop_sized_cells(fdt, iommu_node, "reg",
1, bdf << 8, 1, 0, 1, 0,
1, 0, 1, 0);
qemu_fdt_setprop_cell(fdt, iommu_node, "#iommu-cells", 1);
qemu_fdt_setprop_cell(fdt, iommu_node, "phandle", iommu_phandle);
qemu_fdt_setprop_cells(fdt, pci_node, "iommu-map",
0, iommu_phandle, 0, bdf,
bdf + 1, iommu_phandle, bdf + 1, 0xffff - bdf);
}
static void finalize_fdt(RISCVVirtState *s)
{
uint32_t phandle = 1, irq_mmio_phandle = 1, msi_pcie_phandle = 1;
@ -1680,7 +1709,8 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (device_is_dynamic_sysbus(mc, dev)) {
if (device_is_dynamic_sysbus(mc, dev) ||
object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
return HOTPLUG_HANDLER(machine);
}
return NULL;
@ -1699,6 +1729,10 @@ static void virt_machine_device_plug_cb(HotplugHandler *hotplug_dev,
SYS_BUS_DEVICE(dev));
}
}
if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
create_fdt_virtio_iommu(s, pci_get_bdf(PCI_DEVICE(dev)));
}
}
static void virt_machine_class_init(ObjectClass *oc, void *data)