This patch allows the instantiation of the vfio-hisi-hnsvf device
from the QEMU command line (-device vfio-hisi-hnsvf,host="<device>").
A specialized device tree node is created for the guest, containing
compat, dma-coherent, reg and interrupts properties.
Signed-off-by: Rick Song <songwen...@huawei.com>
---
hw/arm/sysbus-fdt.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
diff --git a/hw/arm/sysbus-fdt.c b/hw/arm/sysbus-fdt.c
index d68e3dc..207586f 100644
--- a/hw/arm/sysbus-fdt.c
+++ b/hw/arm/sysbus-fdt.c
@@ -36,6 +36,7 @@
#include "hw/vfio/vfio-platform.h"
#include "hw/vfio/vfio-calxeda-xgmac.h"
#include "hw/vfio/vfio-amd-xgbe.h"
+#include "hw/vfio/vfio-hisi-hnsvf.h"
#include "hw/arm/fdt.h"
/*
@@ -413,6 +414,75 @@ static int add_amd_xgbe_fdt_node(SysBusDevice *sbdev, void
*opaque)
return 0;
}
+/**
+ * add_hisi_hnsvf_fdt_node
+ *
+ * Generates a simple node with following properties:
+ * compatible string, regs, interrupts, dma-coherent
+ */
+static int add_hisi_hnsvf_fdt_node(SysBusDevice *sbdev, void *opaque)
+{
+ PlatformBusFDTData *data = opaque;
+ PlatformBusDevice *pbus = data->pbus;
+ void *fdt = data->fdt;
+ const char *parent_node = data->pbus_node_name;
+ int compat_str_len, i;
+ char *nodename;
+ uint32_t *irq_attr, *reg_attr;
+ uint64_t mmio_base, irq_number;
+ VFIOPlatformDevice *vdev = VFIO_PLATFORM_DEVICE(sbdev);
+ VFIODevice *vbasedev = &vdev->vbasedev;
+ VFIOINTp *intp;
+
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+ nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
+ vbasedev->name, mmio_base);
+ qemu_fdt_add_subnode(fdt, nodename);
+
+ compat_str_len = strlen(vdev->compat) + 1;
+ qemu_fdt_setprop(fdt, nodename, "compatible",
+ vdev->compat, compat_str_len);
+
+ qemu_fdt_setprop(fdt, nodename, "dma-coherent", "", 0);
+
+ reg_attr = g_new(uint32_t, vbasedev->num_regions * 2);
+ for (i = 0; i < vbasedev->num_regions; i++) {
+ mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, i);
+ reg_attr[2 * i] = cpu_to_be32(mmio_base);
+ reg_attr[2 * i + 1] = cpu_to_be32(
+ memory_region_size(vdev->regions[i]->mem));
+ }
+ qemu_fdt_setprop(fdt, nodename, "reg", reg_attr,
+ vbasedev->num_regions * 2 * sizeof(uint32_t));
+
+ irq_attr = g_new(uint32_t, vbasedev->num_irqs * 3);
+ for (i = 0; i < vbasedev->num_irqs; i++) {
+ irq_number = platform_bus_get_irqn(pbus, sbdev , i)
+ + data->irq_start;
+ irq_attr[3 * i] = cpu_to_be32(GIC_FDT_IRQ_TYPE_SPI);
+ irq_attr[3 * i + 1] = cpu_to_be32(irq_number);
+
+ QLIST_FOREACH(intp, &vdev->intp_list, next) {
+ if (intp->pin == i) {
+ break;
+ }
+ }
+
+ if (intp->flags & VFIO_IRQ_INFO_AUTOMASKED) {
+ irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_LEVEL_HI);
+ } else {
+ irq_attr[3 * i + 2] = cpu_to_be32(GIC_FDT_IRQ_FLAGS_EDGE_LO_HI);
+ }
+ }
+ qemu_fdt_setprop(fdt, nodename, "interrupts",
+ irq_attr, vbasedev->num_irqs * 3 * sizeof(uint32_t));
+ g_free(irq_attr);
+ g_free(reg_attr);
+ g_free(nodename);
+ return 0;
+
+}
+
#endif /* CONFIG_LINUX */
/* list of supported dynamic sysbus devices */
@@ -420,6 +490,7 @@ static const NodeCreationPair add_fdt_node_functions[] = {
#ifdef CONFIG_LINUX
{TYPE_VFIO_CALXEDA_XGMAC, add_calxeda_midway_xgmac_fdt_node},
{TYPE_VFIO_AMD_XGBE, add_amd_xgbe_fdt_node},
+ {TYPE_VFIO_HISI_HNSVF, add_hisi_hnsvf_fdt_node},
#endif
{"", NULL}, /* last element */
};
--
1.9.1
