#include <sys/ioctl.h>
#include "sysemu/sysemu.h"
+#include "hw/display/edid.h"
#include "ui/console.h"
#include "qapi/error.h"
#include "pci.h"
+#include "trace.h"
#ifndef DRM_PLANE_TYPE_PRIMARY
# define DRM_PLANE_TYPE_PRIMARY 1
# define DRM_PLANE_TYPE_CURSOR 2
#endif
+#define pread_field(_fd, _reg, _ptr, _fld) \
+ (sizeof(_ptr->_fld) != \
+ pread(_fd, &(_ptr->_fld), sizeof(_ptr->_fld), \
+ _reg->offset + offsetof(typeof(*_ptr), _fld)))
+
+#define pwrite_field(_fd, _reg, _ptr, _fld) \
+ (sizeof(_ptr->_fld) != \
+ pwrite(_fd, &(_ptr->_fld), sizeof(_ptr->_fld), \
+ _reg->offset + offsetof(typeof(*_ptr), _fld)))
+
+
+static void vfio_display_edid_link_up(void *opaque)
+{
+ VFIOPCIDevice *vdev = opaque;
+ VFIODisplay *dpy = vdev->dpy;
+ int fd = vdev->vbasedev.fd;
+
+ dpy->edid_regs->link_state = VFIO_DEVICE_GFX_LINK_STATE_UP;
+ if (pwrite_field(fd, dpy->edid_info, dpy->edid_regs, link_state)) {
+ goto err;
+ }
+ trace_vfio_display_edid_link_up();
+ return;
+
+err:
+ trace_vfio_display_edid_write_error();
+}
+
+static void vfio_display_edid_update(VFIOPCIDevice *vdev, bool enabled,
+ int prefx, int prefy)
+{
+ VFIODisplay *dpy = vdev->dpy;
+ int fd = vdev->vbasedev.fd;
+ qemu_edid_info edid = {
+ .maxx = dpy->edid_regs->max_xres,
+ .maxy = dpy->edid_regs->max_yres,
+ .prefx = prefx ?: vdev->display_xres,
+ .prefy = prefy ?: vdev->display_yres,
+ };
+
+ timer_del(dpy->edid_link_timer);
+ dpy->edid_regs->link_state = VFIO_DEVICE_GFX_LINK_STATE_DOWN;
+ if (pwrite_field(fd, dpy->edid_info, dpy->edid_regs, link_state)) {
+ goto err;
+ }
+ trace_vfio_display_edid_link_down();
+
+ if (!enabled) {
+ return;
+ }
+
+ if (edid.maxx && edid.prefx > edid.maxx) {
+ edid.prefx = edid.maxx;
+ }
+ if (edid.maxy && edid.prefy > edid.maxy) {
+ edid.prefy = edid.maxy;
+ }
+ qemu_edid_generate(dpy->edid_blob,
+ dpy->edid_regs->edid_max_size,
+ &edid);
+ trace_vfio_display_edid_update(edid.prefx, edid.prefy);
+
+ dpy->edid_regs->edid_size = qemu_edid_size(dpy->edid_blob);
+ if (pwrite_field(fd, dpy->edid_info, dpy->edid_regs, edid_size)) {
+ goto err;
+ }
+ if (pwrite(fd, dpy->edid_blob, dpy->edid_regs->edid_size,
+ dpy->edid_info->offset + dpy->edid_regs->edid_offset)
+ != dpy->edid_regs->edid_size) {
+ goto err;
+ }
+
+ timer_mod(dpy->edid_link_timer,
+ qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 100);
+ return;
+
+err:
+ trace_vfio_display_edid_write_error();
+ return;
+}
+
+static int vfio_display_edid_ui_info(void *opaque, uint32_t idx,
+ QemuUIInfo *info)
+{
+ VFIOPCIDevice *vdev = opaque;
+ VFIODisplay *dpy = vdev->dpy;
+
+ if (!dpy->edid_regs) {
+ return 0;
+ }
+
+ if (info->width && info->height) {
+ vfio_display_edid_update(vdev, true, info->width, info->height);
+ } else {
+ vfio_display_edid_update(vdev, false, 0, 0);
+ }
+
+ return 0;
+}
+
+static void vfio_display_edid_init(VFIOPCIDevice *vdev)
+{
+ VFIODisplay *dpy = vdev->dpy;
+ int fd = vdev->vbasedev.fd;
+ int ret;
+
+ ret = vfio_get_dev_region_info(&vdev->vbasedev,
+ VFIO_REGION_TYPE_GFX,
+ VFIO_REGION_SUBTYPE_GFX_EDID,
+ &dpy->edid_info);
+ if (ret) {
+ return;
+ }
+
+ trace_vfio_display_edid_available();
+ dpy->edid_regs = g_new0(struct vfio_region_gfx_edid, 1);
+ if (pread_field(fd, dpy->edid_info, dpy->edid_regs, edid_offset)) {
+ goto err;
+ }
+ if (pread_field(fd, dpy->edid_info, dpy->edid_regs, edid_max_size)) {
+ goto err;
+ }
+ if (pread_field(fd, dpy->edid_info, dpy->edid_regs, max_xres)) {
+ goto err;
+ }
+ if (pread_field(fd, dpy->edid_info, dpy->edid_regs, max_yres)) {
+ goto err;
+ }
+
+ dpy->edid_blob = g_malloc0(dpy->edid_regs->edid_max_size);
+
+ /* if xres + yres properties are unset use the maximum resolution */
+ if (!vdev->display_xres) {
+ vdev->display_xres = dpy->edid_regs->max_xres;
+ }
+ if (!vdev->display_yres) {
+ vdev->display_yres = dpy->edid_regs->max_yres;
+ }
+
+ dpy->edid_link_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
+ vfio_display_edid_link_up, vdev);
+
+ vfio_display_edid_update(vdev, true, 0, 0);
+ return;
+
+err:
+ trace_vfio_display_edid_write_error();
+ g_free(dpy->edid_regs);
+ dpy->edid_regs = NULL;
+ return;
+}
+
+static void vfio_display_edid_exit(VFIODisplay *dpy)
+{
+ if (!dpy->edid_regs) {
+ return;
+ }
+
+ g_free(dpy->edid_regs);
+ g_free(dpy->edid_blob);
+ timer_del(dpy->edid_link_timer);
+ timer_free(dpy->edid_link_timer);
+}
+
static void vfio_display_update_cursor(VFIODMABuf *dmabuf,
struct vfio_device_gfx_plane_info *plane)
{
primary = vfio_display_get_dmabuf(vdev, DRM_PLANE_TYPE_PRIMARY);
if (primary == NULL) {
+ if (dpy->ramfb) {
+ ramfb_display_update(dpy->con, dpy->ramfb);
+ }
return;
}
static const GraphicHwOps vfio_display_dmabuf_ops = {
.gfx_update = vfio_display_dmabuf_update,
+ .ui_info = vfio_display_edid_ui_info,
};
static int vfio_display_dmabuf_init(VFIOPCIDevice *vdev, Error **errp)
vdev->dpy->con = graphic_console_init(DEVICE(vdev), 0,
&vfio_display_dmabuf_ops,
vdev);
+ if (vdev->enable_ramfb) {
+ vdev->dpy->ramfb = ramfb_setup(errp);
+ }
+ vfio_display_edid_init(vdev);
return 0;
}
}
/* ---------------------------------------------------------------------- */
+void vfio_display_reset(VFIOPCIDevice *vdev)
+{
+ if (!vdev || !vdev->dpy || !vdev->dpy->con ||
+ !vdev->dpy->dmabuf.primary) {
+ return;
+ }
+
+ dpy_gl_scanout_disable(vdev->dpy->con);
+ vfio_display_dmabuf_exit(vdev->dpy);
+ dpy_gfx_update_full(vdev->dpy->con);
+}
static void vfio_display_region_update(void *opaque)
{
return;
}
if (!plane.drm_format || !plane.size) {
+ if (dpy->ramfb) {
+ ramfb_display_update(dpy->con, dpy->ramfb);
+ }
return;
}
format = qemu_drm_format_to_pixman(plane.drm_format);
vdev->dpy->con = graphic_console_init(DEVICE(vdev), 0,
&vfio_display_region_ops,
vdev);
+ if (vdev->enable_ramfb) {
+ vdev->dpy->ramfb = ramfb_setup(errp);
+ }
return 0;
}
graphic_console_close(vdev->dpy->con);
vfio_display_dmabuf_exit(vdev->dpy);
vfio_display_region_exit(vdev->dpy);
+ vfio_display_edid_exit(vdev->dpy);
g_free(vdev->dpy);
}
projects / qemu.git / blobdiff