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-rw-r--r--hw/core/machine.c22
-rw-r--r--hw/display/vga-pci.c9
-rw-r--r--hw/display/vga.c2
-rw-r--r--hw/i386/pc_sysfw.c13
-rw-r--r--hw/ppc/spapr.c7
-rw-r--r--hw/usb/redirect.c4
-rw-r--r--hw/vfio/Makefile.objs2
-rw-r--r--hw/vfio/common.c77
-rw-r--r--hw/vfio/display.c347
-rw-r--r--hw/vfio/pci.c32
-rw-r--r--hw/vfio/pci.h5
11 files changed, 511 insertions, 9 deletions
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 5e2bbcdace..2040177664 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -334,6 +334,22 @@ static bool machine_get_enforce_config_section(Object *obj, Error **errp)
return ms->enforce_config_section;
}
+static char *machine_get_memory_encryption(Object *obj, Error **errp)
+{
+ MachineState *ms = MACHINE(obj);
+
+ return g_strdup(ms->memory_encryption);
+}
+
+static void machine_set_memory_encryption(Object *obj, const char *value,
+ Error **errp)
+{
+ MachineState *ms = MACHINE(obj);
+
+ g_free(ms->memory_encryption);
+ ms->memory_encryption = g_strdup(value);
+}
+
void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type)
{
strList *item = g_new0(strList, 1);
@@ -612,6 +628,12 @@ static void machine_class_init(ObjectClass *oc, void *data)
&error_abort);
object_class_property_set_description(oc, "enforce-config-section",
"Set on to enforce configuration section migration", &error_abort);
+
+ object_class_property_add_str(oc, "memory-encryption",
+ machine_get_memory_encryption, machine_set_memory_encryption,
+ &error_abort);
+ object_class_property_set_description(oc, "memory-encryption",
+ "Set memory encyption object to use", &error_abort);
}
static void machine_class_base_init(ObjectClass *oc, void *data)
diff --git a/hw/display/vga-pci.c b/hw/display/vga-pci.c
index 1674bd3581..f312930664 100644
--- a/hw/display/vga-pci.c
+++ b/hw/display/vga-pci.c
@@ -292,6 +292,14 @@ static void pci_secondary_vga_realize(PCIDevice *dev, Error **errp)
pci_register_bar(&d->dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &d->mmio);
}
+static void pci_secondary_vga_exit(PCIDevice *dev)
+{
+ PCIVGAState *d = PCI_VGA(dev);
+ VGACommonState *s = &d->vga;
+
+ graphic_console_close(s->con);
+}
+
static void pci_secondary_vga_init(Object *obj)
{
/* Expose framebuffer byteorder via QOM */
@@ -361,6 +369,7 @@ static void secondary_class_init(ObjectClass *klass, void *data)
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = pci_secondary_vga_realize;
+ k->exit = pci_secondary_vga_exit;
k->class_id = PCI_CLASS_DISPLAY_OTHER;
dc->props = secondary_pci_properties;
dc->reset = pci_secondary_vga_reset;
diff --git a/hw/display/vga.c b/hw/display/vga.c
index 28f298b342..72181330b8 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -1483,6 +1483,8 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
region_start = (s->start_addr * 4);
region_end = region_start + (ram_addr_t)s->line_offset * height;
+ region_end += width * s->get_bpp(s) / 8; /* scanline length */
+ region_end -= s->line_offset;
if (region_end > s->vbe_size) {
/* wraps around (can happen with cirrus vbe modes) */
region_start = 0;
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 4325575e7d..73ac783f20 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -113,6 +113,8 @@ static void pc_system_flash_init(MemoryRegion *rom_memory)
pflash_t *system_flash;
MemoryRegion *flash_mem;
char name[64];
+ void *flash_ptr;
+ int ret, flash_size;
sector_bits = 12;
sector_size = 1 << sector_bits;
@@ -169,6 +171,17 @@ static void pc_system_flash_init(MemoryRegion *rom_memory)
if (unit == 0) {
flash_mem = pflash_cfi01_get_memory(system_flash);
pc_isa_bios_init(rom_memory, flash_mem, size);
+
+ /* Encrypt the pflash boot ROM */
+ if (kvm_memcrypt_enabled()) {
+ flash_ptr = memory_region_get_ram_ptr(flash_mem);
+ flash_size = memory_region_size(flash_mem);
+ ret = kvm_memcrypt_encrypt_data(flash_ptr, flash_size);
+ if (ret) {
+ error_report("failed to encrypt pflash rom");
+ exit(1);
+ }
+ }
}
}
}
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 7e1c858566..032d03423f 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2855,6 +2855,11 @@ static void spapr_set_modern_hotplug_events(Object *obj, bool value,
spapr->use_hotplug_event_source = value;
}
+static bool spapr_get_msix_emulation(Object *obj, Error **errp)
+{
+ return true;
+}
+
static char *spapr_get_resize_hpt(Object *obj, Error **errp)
{
sPAPRMachineState *spapr = SPAPR_MACHINE(obj);
@@ -2936,6 +2941,8 @@ static void spapr_instance_init(Object *obj)
object_property_set_description(obj, "vsmt",
"Virtual SMT: KVM behaves as if this were"
" the host's SMT mode", &error_abort);
+ object_property_add_bool(obj, "vfio-no-msix-emulation",
+ spapr_get_msix_emulation, NULL, NULL);
}
static void spapr_machine_finalizefn(Object *obj)
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index ec174309db..65a9196c1a 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -106,10 +106,10 @@ struct USBRedirDevice {
USBDevice dev;
/* Properties */
CharBackend cs;
+ bool enable_streams;
uint8_t debug;
- char *filter_str;
int32_t bootindex;
- bool enable_streams;
+ char *filter_str;
/* Data passed from chardev the fd_read cb to the usbredirparser read cb */
const uint8_t *read_buf;
int read_buf_size;
diff --git a/hw/vfio/Makefile.objs b/hw/vfio/Makefile.objs
index c3ab9097f1..a2e7a0a7cf 100644
--- a/hw/vfio/Makefile.objs
+++ b/hw/vfio/Makefile.objs
@@ -1,6 +1,6 @@
ifeq ($(CONFIG_LINUX), y)
obj-$(CONFIG_SOFTMMU) += common.o
-obj-$(CONFIG_PCI) += pci.o pci-quirks.o
+obj-$(CONFIG_PCI) += pci.o pci-quirks.o display.o
obj-$(CONFIG_VFIO_CCW) += ccw.o
obj-$(CONFIG_SOFTMMU) += platform.o
obj-$(CONFIG_VFIO_XGMAC) += calxeda-xgmac.o
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index f895e3c335..5e84716218 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -544,18 +544,40 @@ static void vfio_listener_region_add(MemoryListener *listener,
llsize = int128_sub(llend, int128_make64(iova));
+ if (memory_region_is_ram_device(section->mr)) {
+ hwaddr pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1;
+
+ if ((iova & pgmask) || (int128_get64(llsize) & pgmask)) {
+ error_report("Region 0x%"HWADDR_PRIx"..0x%"HWADDR_PRIx
+ " is not aligned to 0x%"HWADDR_PRIx
+ " and cannot be mapped for DMA",
+ section->offset_within_region,
+ int128_getlo(section->size),
+ pgmask + 1);
+ return;
+ }
+ }
+
ret = vfio_dma_map(container, iova, int128_get64(llsize),
vaddr, section->readonly);
if (ret) {
error_report("vfio_dma_map(%p, 0x%"HWADDR_PRIx", "
"0x%"HWADDR_PRIx", %p) = %d (%m)",
container, iova, int128_get64(llsize), vaddr, ret);
+ if (memory_region_is_ram_device(section->mr)) {
+ /* Allow unexpected mappings not to be fatal for RAM devices */
+ return;
+ }
goto fail;
}
return;
fail:
+ if (memory_region_is_ram_device(section->mr)) {
+ error_report("failed to vfio_dma_map. pci p2p may not work");
+ return;
+ }
/*
* On the initfn path, store the first error in the container so we
* can gracefully fail. Runtime, there's not much we can do other
@@ -577,6 +599,7 @@ static void vfio_listener_region_del(MemoryListener *listener,
hwaddr iova, end;
Int128 llend, llsize;
int ret;
+ bool try_unmap = true;
if (vfio_listener_skipped_section(section)) {
trace_vfio_listener_region_del_skip(
@@ -629,14 +652,34 @@ static void vfio_listener_region_del(MemoryListener *listener,
trace_vfio_listener_region_del(iova, end);
- ret = vfio_dma_unmap(container, iova, int128_get64(llsize));
- memory_region_unref(section->mr);
- if (ret) {
- error_report("vfio_dma_unmap(%p, 0x%"HWADDR_PRIx", "
- "0x%"HWADDR_PRIx") = %d (%m)",
- container, iova, int128_get64(llsize), ret);
+ if (memory_region_is_ram_device(section->mr)) {
+ hwaddr pgmask;
+ VFIOHostDMAWindow *hostwin;
+ bool hostwin_found = false;
+
+ QLIST_FOREACH(hostwin, &container->hostwin_list, hostwin_next) {
+ if (hostwin->min_iova <= iova && end <= hostwin->max_iova) {
+ hostwin_found = true;
+ break;
+ }
+ }
+ assert(hostwin_found); /* or region_add() would have failed */
+
+ pgmask = (1ULL << ctz64(hostwin->iova_pgsizes)) - 1;
+ try_unmap = !((iova & pgmask) || (int128_get64(llsize) & pgmask));
}
+ if (try_unmap) {
+ ret = vfio_dma_unmap(container, iova, int128_get64(llsize));
+ if (ret) {
+ error_report("vfio_dma_unmap(%p, 0x%"HWADDR_PRIx", "
+ "0x%"HWADDR_PRIx") = %d (%m)",
+ container, iova, int128_get64(llsize), ret);
+ }
+ }
+
+ memory_region_unref(section->mr);
+
if (container->iommu_type == VFIO_SPAPR_TCE_v2_IOMMU) {
vfio_spapr_remove_window(container,
section->offset_within_address_space);
@@ -858,6 +901,13 @@ void vfio_region_finalize(VFIORegion *region)
g_free(region->mmaps);
trace_vfio_region_finalize(region->vbasedev->name, region->nr);
+
+ region->mem = NULL;
+ region->mmaps = NULL;
+ region->nr_mmaps = 0;
+ region->size = 0;
+ region->flags = 0;
+ region->nr = 0;
}
void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled)
@@ -1421,6 +1471,21 @@ int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
return -ENODEV;
}
+bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type)
+{
+ struct vfio_region_info *info = NULL;
+ bool ret = false;
+
+ if (!vfio_get_region_info(vbasedev, region, &info)) {
+ if (vfio_get_region_info_cap(info, cap_type)) {
+ ret = true;
+ }
+ g_free(info);
+ }
+
+ return ret;
+}
+
/*
* Interfaces for IBM EEH (Enhanced Error Handling)
*/
diff --git a/hw/vfio/display.c b/hw/vfio/display.c
new file mode 100644
index 0000000000..7d727ce910
--- /dev/null
+++ b/hw/vfio/display.c
@@ -0,0 +1,347 @@
+/*
+ * display support for mdev based vgpu devices
+ *
+ * Copyright Red Hat, Inc. 2017
+ *
+ * Authors:
+ * Gerd Hoffmann
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include <linux/vfio.h>
+#include <sys/ioctl.h>
+
+#include "sysemu/sysemu.h"
+#include "ui/console.h"
+#include "qapi/error.h"
+#include "pci.h"
+
+#ifndef DRM_PLANE_TYPE_PRIMARY
+# define DRM_PLANE_TYPE_PRIMARY 1
+# define DRM_PLANE_TYPE_CURSOR 2
+#endif
+
+static void vfio_display_update_cursor(VFIODMABuf *dmabuf,
+ struct vfio_device_gfx_plane_info *plane)
+{
+ if (dmabuf->pos_x != plane->x_pos || dmabuf->pos_y != plane->y_pos) {
+ dmabuf->pos_x = plane->x_pos;
+ dmabuf->pos_y = plane->y_pos;
+ dmabuf->pos_updates++;
+ }
+ if (dmabuf->hot_x != plane->x_hot || dmabuf->hot_y != plane->y_hot) {
+ dmabuf->hot_x = plane->x_hot;
+ dmabuf->hot_y = plane->y_hot;
+ dmabuf->hot_updates++;
+ }
+}
+
+static VFIODMABuf *vfio_display_get_dmabuf(VFIOPCIDevice *vdev,
+ uint32_t plane_type)
+{
+ VFIODisplay *dpy = vdev->dpy;
+ struct vfio_device_gfx_plane_info plane;
+ VFIODMABuf *dmabuf;
+ int fd, ret;
+
+ memset(&plane, 0, sizeof(plane));
+ plane.argsz = sizeof(plane);
+ plane.flags = VFIO_GFX_PLANE_TYPE_DMABUF;
+ plane.drm_plane_type = plane_type;
+ ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_QUERY_GFX_PLANE, &plane);
+ if (ret < 0) {
+ return NULL;
+ }
+ if (!plane.drm_format || !plane.size) {
+ return NULL;
+ }
+
+ QTAILQ_FOREACH(dmabuf, &dpy->dmabuf.bufs, next) {
+ if (dmabuf->dmabuf_id == plane.dmabuf_id) {
+ /* found in list, move to head, return it */
+ QTAILQ_REMOVE(&dpy->dmabuf.bufs, dmabuf, next);
+ QTAILQ_INSERT_HEAD(&dpy->dmabuf.bufs, dmabuf, next);
+ if (plane_type == DRM_PLANE_TYPE_CURSOR) {
+ vfio_display_update_cursor(dmabuf, &plane);
+ }
+ return dmabuf;
+ }
+ }
+
+ fd = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_GET_GFX_DMABUF, &plane.dmabuf_id);
+ if (fd < 0) {
+ return NULL;
+ }
+
+ dmabuf = g_new0(VFIODMABuf, 1);
+ dmabuf->dmabuf_id = plane.dmabuf_id;
+ dmabuf->buf.width = plane.width;
+ dmabuf->buf.height = plane.height;
+ dmabuf->buf.stride = plane.stride;
+ dmabuf->buf.fourcc = plane.drm_format;
+ dmabuf->buf.fd = fd;
+ if (plane_type == DRM_PLANE_TYPE_CURSOR) {
+ vfio_display_update_cursor(dmabuf, &plane);
+ }
+
+ QTAILQ_INSERT_HEAD(&dpy->dmabuf.bufs, dmabuf, next);
+ return dmabuf;
+}
+
+static void vfio_display_free_one_dmabuf(VFIODisplay *dpy, VFIODMABuf *dmabuf)
+{
+ QTAILQ_REMOVE(&dpy->dmabuf.bufs, dmabuf, next);
+ dpy_gl_release_dmabuf(dpy->con, &dmabuf->buf);
+ close(dmabuf->buf.fd);
+ g_free(dmabuf);
+}
+
+static void vfio_display_free_dmabufs(VFIOPCIDevice *vdev)
+{
+ VFIODisplay *dpy = vdev->dpy;
+ VFIODMABuf *dmabuf, *tmp;
+ uint32_t keep = 5;
+
+ QTAILQ_FOREACH_SAFE(dmabuf, &dpy->dmabuf.bufs, next, tmp) {
+ if (keep > 0) {
+ keep--;
+ continue;
+ }
+ assert(dmabuf != dpy->dmabuf.primary);
+ vfio_display_free_one_dmabuf(dpy, dmabuf);
+ }
+}
+
+static void vfio_display_dmabuf_update(void *opaque)
+{
+ VFIOPCIDevice *vdev = opaque;
+ VFIODisplay *dpy = vdev->dpy;
+ VFIODMABuf *primary, *cursor;
+ bool free_bufs = false, new_cursor = false;;
+
+ primary = vfio_display_get_dmabuf(vdev, DRM_PLANE_TYPE_PRIMARY);
+ if (primary == NULL) {
+ return;
+ }
+
+ if (dpy->dmabuf.primary != primary) {
+ dpy->dmabuf.primary = primary;
+ qemu_console_resize(dpy->con,
+ primary->buf.width, primary->buf.height);
+ dpy_gl_scanout_dmabuf(dpy->con, &primary->buf);
+ free_bufs = true;
+ }
+
+ cursor = vfio_display_get_dmabuf(vdev, DRM_PLANE_TYPE_CURSOR);
+ if (dpy->dmabuf.cursor != cursor) {
+ dpy->dmabuf.cursor = cursor;
+ new_cursor = true;
+ free_bufs = true;
+ }
+
+ if (cursor && (new_cursor || cursor->hot_updates)) {
+ bool have_hot = (cursor->hot_x != 0xffffffff &&
+ cursor->hot_y != 0xffffffff);
+ dpy_gl_cursor_dmabuf(dpy->con, &cursor->buf, have_hot,
+ cursor->hot_x, cursor->hot_y);
+ cursor->hot_updates = 0;
+ } else if (!cursor && new_cursor) {
+ dpy_gl_cursor_dmabuf(dpy->con, NULL, false, 0, 0);
+ }
+
+ if (cursor && cursor->pos_updates) {
+ dpy_gl_cursor_position(dpy->con,
+ cursor->pos_x,
+ cursor->pos_y);
+ cursor->pos_updates = 0;
+ }
+
+ dpy_gl_update(dpy->con, 0, 0, primary->buf.width, primary->buf.height);
+
+ if (free_bufs) {
+ vfio_display_free_dmabufs(vdev);
+ }
+}
+
+static const GraphicHwOps vfio_display_dmabuf_ops = {
+ .gfx_update = vfio_display_dmabuf_update,
+};
+
+static int vfio_display_dmabuf_init(VFIOPCIDevice *vdev, Error **errp)
+{
+ if (!display_opengl) {
+ error_setg(errp, "vfio-display-dmabuf: opengl not available");
+ return -1;
+ }
+
+ vdev->dpy = g_new0(VFIODisplay, 1);
+ vdev->dpy->con = graphic_console_init(DEVICE(vdev), 0,
+ &vfio_display_dmabuf_ops,
+ vdev);
+ return 0;
+}
+
+static void vfio_display_dmabuf_exit(VFIODisplay *dpy)
+{
+ VFIODMABuf *dmabuf;
+
+ if (QTAILQ_EMPTY(&dpy->dmabuf.bufs)) {
+ return;
+ }
+
+ while ((dmabuf = QTAILQ_FIRST(&dpy->dmabuf.bufs)) != NULL) {
+ vfio_display_free_one_dmabuf(dpy, dmabuf);
+ }
+}
+
+/* ---------------------------------------------------------------------- */
+
+static void vfio_display_region_update(void *opaque)
+{
+ VFIOPCIDevice *vdev = opaque;
+ VFIODisplay *dpy = vdev->dpy;
+ struct vfio_device_gfx_plane_info plane = {
+ .argsz = sizeof(plane),
+ .flags = VFIO_GFX_PLANE_TYPE_REGION
+ };
+ pixman_format_code_t format;
+ int ret;
+
+ ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_QUERY_GFX_PLANE, &plane);
+ if (ret < 0) {
+ error_report("ioctl VFIO_DEVICE_QUERY_GFX_PLANE: %s",
+ strerror(errno));
+ return;
+ }
+ if (!plane.drm_format || !plane.size) {
+ return;
+ }
+ format = qemu_drm_format_to_pixman(plane.drm_format);
+ if (!format) {
+ return;
+ }
+
+ if (dpy->region.buffer.size &&
+ dpy->region.buffer.nr != plane.region_index) {
+ /* region changed */
+ vfio_region_exit(&dpy->region.buffer);
+ vfio_region_finalize(&dpy->region.buffer);
+ dpy->region.surface = NULL;
+ }
+
+ if (dpy->region.surface &&
+ (surface_width(dpy->region.surface) != plane.width ||
+ surface_height(dpy->region.surface) != plane.height ||
+ surface_format(dpy->region.surface) != format)) {
+ /* size changed */
+ dpy->region.surface = NULL;
+ }
+
+ if (!dpy->region.buffer.size) {
+ /* mmap region */
+ ret = vfio_region_setup(OBJECT(vdev), &vdev->vbasedev,
+ &dpy->region.buffer,
+ plane.region_index,
+ "display");
+ if (ret != 0) {
+ error_report("%s: vfio_region_setup(%d): %s",
+ __func__, plane.region_index, strerror(-ret));
+ goto err;
+ }
+ ret = vfio_region_mmap(&dpy->region.buffer);
+ if (ret != 0) {
+ error_report("%s: vfio_region_mmap(%d): %s", __func__,
+ plane.region_index, strerror(-ret));
+ goto err;
+ }
+ assert(dpy->region.buffer.mmaps[0].mmap != NULL);
+ }
+
+ if (dpy->region.surface == NULL) {
+ /* create surface */
+ dpy->region.surface = qemu_create_displaysurface_from
+ (plane.width, plane.height, format,
+ plane.stride, dpy->region.buffer.mmaps[0].mmap);
+ dpy_gfx_replace_surface(dpy->con, dpy->region.surface);
+ }
+
+ /* full screen update */
+ dpy_gfx_update(dpy->con, 0, 0,
+ surface_width(dpy->region.surface),
+ surface_height(dpy->region.surface));
+ return;
+
+err:
+ vfio_region_exit(&dpy->region.buffer);
+ vfio_region_finalize(&dpy->region.buffer);
+}
+
+static const GraphicHwOps vfio_display_region_ops = {
+ .gfx_update = vfio_display_region_update,
+};
+
+static int vfio_display_region_init(VFIOPCIDevice *vdev, Error **errp)
+{
+ vdev->dpy = g_new0(VFIODisplay, 1);
+ vdev->dpy->con = graphic_console_init(DEVICE(vdev), 0,
+ &vfio_display_region_ops,
+ vdev);
+ return 0;
+}
+
+static void vfio_display_region_exit(VFIODisplay *dpy)
+{
+ if (!dpy->region.buffer.size) {
+ return;
+ }
+
+ vfio_region_exit(&dpy->region.buffer);
+ vfio_region_finalize(&dpy->region.buffer);
+}
+
+/* ---------------------------------------------------------------------- */
+
+int vfio_display_probe(VFIOPCIDevice *vdev, Error **errp)
+{
+ struct vfio_device_gfx_plane_info probe;
+ int ret;
+
+ memset(&probe, 0, sizeof(probe));
+ probe.argsz = sizeof(probe);
+ probe.flags = VFIO_GFX_PLANE_TYPE_PROBE | VFIO_GFX_PLANE_TYPE_DMABUF;
+ ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_QUERY_GFX_PLANE, &probe);
+ if (ret == 0) {
+ return vfio_display_dmabuf_init(vdev, errp);
+ }
+
+ memset(&probe, 0, sizeof(probe));
+ probe.argsz = sizeof(probe);
+ probe.flags = VFIO_GFX_PLANE_TYPE_PROBE | VFIO_GFX_PLANE_TYPE_REGION;
+ ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_QUERY_GFX_PLANE, &probe);
+ if (ret == 0) {
+ return vfio_display_region_init(vdev, errp);
+ }
+
+ if (vdev->display == ON_OFF_AUTO_AUTO) {
+ /* not an error in automatic mode */
+ return 0;
+ }
+
+ error_setg(errp, "vfio: device doesn't support any (known) display method");
+ return -1;
+}
+
+void vfio_display_finalize(VFIOPCIDevice *vdev)
+{
+ if (!vdev->dpy) {
+ return;
+ }
+
+ graphic_console_close(vdev->dpy->con);
+ vfio_display_dmabuf_exit(vdev->dpy);
+ vfio_display_region_exit(vdev->dpy);
+ g_free(vdev->dpy);
+}
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 3ba3cbc146..b9bc6cd310 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -1295,6 +1295,15 @@ static void vfio_pci_fixup_msix_region(VFIOPCIDevice *vdev)
VFIORegion *region = &vdev->bars[vdev->msix->table_bar].region;
/*
+ * If the host driver allows mapping of a MSIX data, we are going to
+ * do map the entire BAR and emulate MSIX table on top of that.
+ */
+ if (vfio_has_region_cap(&vdev->vbasedev, region->nr,
+ VFIO_REGION_INFO_CAP_MSIX_MAPPABLE)) {
+ return;
+ }
+
+ /*
* We expect to find a single mmap covering the whole BAR, anything else
* means it's either unsupported or already setup.
*/
@@ -1572,6 +1581,19 @@ static int vfio_msix_setup(VFIOPCIDevice *vdev, int pos, Error **errp)
*/
memory_region_set_enabled(&vdev->pdev.msix_pba_mmio, false);
+ /*
+ * The emulated machine may provide a paravirt interface for MSIX setup
+ * so it is not strictly necessary to emulate MSIX here. This becomes
+ * helpful when frequently accessed MMIO registers are located in
+ * subpages adjacent to the MSIX table but the MSIX data containing page
+ * cannot be mapped because of a host page size bigger than the MSIX table
+ * alignment.
+ */
+ if (object_property_get_bool(OBJECT(qdev_get_machine()),
+ "vfio-no-msix-emulation", NULL)) {
+ memory_region_set_enabled(&vdev->pdev.msix_table_mmio, false);
+ }
+
return 0;
}
@@ -3015,6 +3037,13 @@ static void vfio_realize(PCIDevice *pdev, Error **errp)
}
}
+ if (vdev->display != ON_OFF_AUTO_OFF) {
+ ret = vfio_display_probe(vdev, errp);
+ if (ret) {
+ goto out_teardown;
+ }
+ }
+
vfio_register_err_notifier(vdev);
vfio_register_req_notifier(vdev);
vfio_setup_resetfn_quirk(vdev);
@@ -3035,6 +3064,7 @@ static void vfio_instance_finalize(Object *obj)
VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pci_dev);
VFIOGroup *group = vdev->vbasedev.group;
+ vfio_display_finalize(vdev);
vfio_bars_finalize(vdev);
g_free(vdev->emulated_config_bits);
g_free(vdev->rom);
@@ -3123,6 +3153,8 @@ static void vfio_instance_init(Object *obj)
static Property vfio_pci_dev_properties[] = {
DEFINE_PROP_PCI_HOST_DEVADDR("host", VFIOPCIDevice, host),
DEFINE_PROP_STRING("sysfsdev", VFIOPCIDevice, vbasedev.sysfsdev),
+ DEFINE_PROP_ON_OFF_AUTO("display", VFIOPCIDevice,
+ display, ON_OFF_AUTO_AUTO),
DEFINE_PROP_UINT32("x-intx-mmap-timeout-ms", VFIOPCIDevice,
intx.mmap_timeout, 1100),
DEFINE_PROP_BIT("x-vga", VFIOPCIDevice, features,
diff --git a/hw/vfio/pci.h b/hw/vfio/pci.h
index f4aa13e021..629c875701 100644
--- a/hw/vfio/pci.h
+++ b/hw/vfio/pci.h
@@ -133,6 +133,7 @@ typedef struct VFIOPCIDevice {
#define VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT 2
#define VFIO_FEATURE_ENABLE_IGD_OPREGION \
(1 << VFIO_FEATURE_ENABLE_IGD_OPREGION_BIT)
+ OnOffAuto display;
int32_t bootindex;
uint32_t igd_gms;
OffAutoPCIBAR msix_relo;
@@ -147,6 +148,7 @@ typedef struct VFIOPCIDevice {
bool no_kvm_msi;
bool no_kvm_msix;
bool no_geforce_quirks;
+ VFIODisplay *dpy;
} VFIOPCIDevice;
uint32_t vfio_pci_read_config(PCIDevice *pdev, uint32_t addr, int len);
@@ -174,4 +176,7 @@ int vfio_pci_igd_opregion_init(VFIOPCIDevice *vdev,
struct vfio_region_info *info,
Error **errp);
+int vfio_display_probe(VFIOPCIDevice *vdev, Error **errp);
+void vfio_display_finalize(VFIOPCIDevice *vdev);
+
#endif /* HW_VFIO_VFIO_PCI_H */
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-24 06:31:52 +0000