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FRET-qemu/hw/display/virtio-gpu-virgl.c
Alex Bennée c4e1c361b3 hw/display: factor out the scanout blob to fb conversion 
There are two identical sequences of a code doing the same thing that
raise warnings with Coverity. Before fixing those issues lets factor
out the common code into a helper function we can share.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Tested-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Message-ID: <20241111230040.68470-2-alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-11-18 13:36:39 +01:00

1175 lines
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/*
* Virtio GPU Device
*
* Copyright Red Hat, Inc. 2013-2014
*
* Authors:
* Dave Airlie <airlied@redhat.com>
* Gerd Hoffmann <kraxel@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/iov.h"
#include "trace.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-gpu.h"
#include "hw/virtio/virtio-gpu-bswap.h"
#include "hw/virtio/virtio-gpu-pixman.h"
#include "ui/egl-helpers.h"
#include <virglrenderer.h>
struct virtio_gpu_virgl_resource {
struct virtio_gpu_simple_resource base;
MemoryRegion *mr;
};
static struct virtio_gpu_virgl_resource *
virtio_gpu_virgl_find_resource(VirtIOGPU *g, uint32_t resource_id)
{
struct virtio_gpu_simple_resource *res;
res = virtio_gpu_find_resource(g, resource_id);
if (!res) {
return NULL;
}
return container_of(res, struct virtio_gpu_virgl_resource, base);
}
#if VIRGL_RENDERER_CALLBACKS_VERSION >= 4
static void *
virgl_get_egl_display(G_GNUC_UNUSED void *cookie)
{
return qemu_egl_display;
}
#endif
#if VIRGL_VERSION_MAJOR >= 1
struct virtio_gpu_virgl_hostmem_region {
MemoryRegion mr;
struct VirtIOGPU *g;
bool finish_unmapping;
};
static struct virtio_gpu_virgl_hostmem_region *
to_hostmem_region(MemoryRegion *mr)
{
return container_of(mr, struct virtio_gpu_virgl_hostmem_region, mr);
}
static void virtio_gpu_virgl_resume_cmdq_bh(void *opaque)
{
VirtIOGPU *g = opaque;
virtio_gpu_process_cmdq(g);
}
static void virtio_gpu_virgl_hostmem_region_free(void *obj)
{
MemoryRegion *mr = MEMORY_REGION(obj);
struct virtio_gpu_virgl_hostmem_region *vmr;
VirtIOGPUBase *b;
VirtIOGPUGL *gl;
vmr = to_hostmem_region(mr);
vmr->finish_unmapping = true;
b = VIRTIO_GPU_BASE(vmr->g);
b->renderer_blocked--;
/*
* memory_region_unref() is executed from RCU thread context, while
* virglrenderer works only on the main-loop thread that's holding GL
* context.
*/
gl = VIRTIO_GPU_GL(vmr->g);
qemu_bh_schedule(gl->cmdq_resume_bh);
}
static int
virtio_gpu_virgl_map_resource_blob(VirtIOGPU *g,
struct virtio_gpu_virgl_resource *res,
uint64_t offset)
{
struct virtio_gpu_virgl_hostmem_region *vmr;
VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
MemoryRegion *mr;
uint64_t size;
void *data;
int ret;
if (!virtio_gpu_hostmem_enabled(b->conf)) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: hostmem disabled\n", __func__);
return -EOPNOTSUPP;
}
ret = virgl_renderer_resource_map(res->base.resource_id, &data, &size);
if (ret) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map virgl resource: %s\n",
__func__, strerror(-ret));
return ret;
}
vmr = g_new0(struct virtio_gpu_virgl_hostmem_region, 1);
vmr->g = g;
mr = &vmr->mr;
memory_region_init_ram_ptr(mr, OBJECT(mr), "blob", size, data);
memory_region_add_subregion(&b->hostmem, offset, mr);
memory_region_set_enabled(mr, true);
/*
* MR could outlive the resource if MR's reference is held outside of
* virtio-gpu. In order to prevent unmapping resource while MR is alive,
* and thus, making the data pointer invalid, we will block virtio-gpu
* command processing until MR is fully unreferenced and freed.
*/
OBJECT(mr)->free = virtio_gpu_virgl_hostmem_region_free;
res->mr = mr;
return 0;
}
static int
virtio_gpu_virgl_unmap_resource_blob(VirtIOGPU *g,
struct virtio_gpu_virgl_resource *res,
bool *cmd_suspended)
{
struct virtio_gpu_virgl_hostmem_region *vmr;
VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
MemoryRegion *mr = res->mr;
int ret;
if (!mr) {
return 0;
}
vmr = to_hostmem_region(res->mr);
/*
* Perform async unmapping in 3 steps:
*
* 1. Begin async unmapping with memory_region_del_subregion()
* and suspend/block cmd processing.
* 2. Wait for res->mr to be freed and cmd processing resumed
* asynchronously by virtio_gpu_virgl_hostmem_region_free().
* 3. Finish the unmapping with final virgl_renderer_resource_unmap().
*/
if (vmr->finish_unmapping) {
res->mr = NULL;
g_free(vmr);
ret = virgl_renderer_resource_unmap(res->base.resource_id);
if (ret) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: failed to unmap virgl resource: %s\n",
__func__, strerror(-ret));
return ret;
}
} else {
*cmd_suspended = true;
/* render will be unblocked once MR is freed */
b->renderer_blocked++;
/* memory region owns self res->mr object and frees it by itself */
memory_region_set_enabled(mr, false);
memory_region_del_subregion(&b->hostmem, mr);
object_unparent(OBJECT(mr));
}
return 0;
}
#endif
static void virgl_cmd_create_resource_2d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resource_create_2d c2d;
struct virgl_renderer_resource_create_args args;
struct virtio_gpu_virgl_resource *res;
VIRTIO_GPU_FILL_CMD(c2d);
trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
c2d.width, c2d.height);
if (c2d.resource_id == 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = virtio_gpu_virgl_find_resource(g, c2d.resource_id);
if (res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
__func__, c2d.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = g_new0(struct virtio_gpu_virgl_resource, 1);
res->base.width = c2d.width;
res->base.height = c2d.height;
res->base.format = c2d.format;
res->base.resource_id = c2d.resource_id;
res->base.dmabuf_fd = -1;
QTAILQ_INSERT_HEAD(&g->reslist, &res->base, next);
args.handle = c2d.resource_id;
args.target = 2;
args.format = c2d.format;
args.bind = (1 << 1);
args.width = c2d.width;
args.height = c2d.height;
args.depth = 1;
args.array_size = 1;
args.last_level = 0;
args.nr_samples = 0;
args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;
virgl_renderer_resource_create(&args, NULL, 0);
}
static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resource_create_3d c3d;
struct virgl_renderer_resource_create_args args;
struct virtio_gpu_virgl_resource *res;
VIRTIO_GPU_FILL_CMD(c3d);
trace_virtio_gpu_cmd_res_create_3d(c3d.resource_id, c3d.format,
c3d.width, c3d.height, c3d.depth);
if (c3d.resource_id == 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = virtio_gpu_virgl_find_resource(g, c3d.resource_id);
if (res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
__func__, c3d.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = g_new0(struct virtio_gpu_virgl_resource, 1);
res->base.width = c3d.width;
res->base.height = c3d.height;
res->base.format = c3d.format;
res->base.resource_id = c3d.resource_id;
res->base.dmabuf_fd = -1;
QTAILQ_INSERT_HEAD(&g->reslist, &res->base, next);
args.handle = c3d.resource_id;
args.target = c3d.target;
args.format = c3d.format;
args.bind = c3d.bind;
args.width = c3d.width;
args.height = c3d.height;
args.depth = c3d.depth;
args.array_size = c3d.array_size;
args.last_level = c3d.last_level;
args.nr_samples = c3d.nr_samples;
args.flags = c3d.flags;
virgl_renderer_resource_create(&args, NULL, 0);
}
static void virgl_cmd_resource_unref(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd,
bool *cmd_suspended)
{
struct virtio_gpu_resource_unref unref;
struct virtio_gpu_virgl_resource *res;
struct iovec *res_iovs = NULL;
int num_iovs = 0;
VIRTIO_GPU_FILL_CMD(unref);
trace_virtio_gpu_cmd_res_unref(unref.resource_id);
res = virtio_gpu_virgl_find_resource(g, unref.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource does not exist %d\n",
__func__, unref.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
#if VIRGL_VERSION_MAJOR >= 1
if (virtio_gpu_virgl_unmap_resource_blob(g, res, cmd_suspended)) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
if (*cmd_suspended) {
return;
}
#endif
virgl_renderer_resource_detach_iov(unref.resource_id,
&res_iovs,
&num_iovs);
if (res_iovs != NULL && num_iovs != 0) {
virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs);
}
virgl_renderer_resource_unref(unref.resource_id);
QTAILQ_REMOVE(&g->reslist, &res->base, next);
g_free(res);
}
static void virgl_cmd_context_create(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_ctx_create cc;
VIRTIO_GPU_FILL_CMD(cc);
trace_virtio_gpu_cmd_ctx_create(cc.hdr.ctx_id,
cc.debug_name);
if (cc.context_init) {
if (!virtio_gpu_context_init_enabled(g->parent_obj.conf)) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: context_init disabled",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
#if VIRGL_VERSION_MAJOR >= 1
virgl_renderer_context_create_with_flags(cc.hdr.ctx_id,
cc.context_init,
cc.nlen,
cc.debug_name);
return;
#endif
}
virgl_renderer_context_create(cc.hdr.ctx_id, cc.nlen, cc.debug_name);
}
static void virgl_cmd_context_destroy(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_ctx_destroy cd;
VIRTIO_GPU_FILL_CMD(cd);
trace_virtio_gpu_cmd_ctx_destroy(cd.hdr.ctx_id);
virgl_renderer_context_destroy(cd.hdr.ctx_id);
}
static void virtio_gpu_rect_update(VirtIOGPU *g, int idx, int x, int y,
int width, int height)
{
if (!g->parent_obj.scanout[idx].con) {
return;
}
dpy_gl_update(g->parent_obj.scanout[idx].con, x, y, width, height);
}
static void virgl_cmd_resource_flush(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resource_flush rf;
int i;
VIRTIO_GPU_FILL_CMD(rf);
trace_virtio_gpu_cmd_res_flush(rf.resource_id,
rf.r.width, rf.r.height, rf.r.x, rf.r.y);
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
if (g->parent_obj.scanout[i].resource_id != rf.resource_id) {
continue;
}
virtio_gpu_rect_update(g, i, rf.r.x, rf.r.y, rf.r.width, rf.r.height);
}
}
static void virgl_cmd_set_scanout(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_set_scanout ss;
int ret;
VIRTIO_GPU_FILL_CMD(ss);
trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
ss.r.width, ss.r.height, ss.r.x, ss.r.y);
if (ss.scanout_id >= g->parent_obj.conf.max_outputs) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
__func__, ss.scanout_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
return;
}
g->parent_obj.enable = 1;
if (ss.resource_id && ss.r.width && ss.r.height) {
struct virgl_renderer_resource_info info;
void *d3d_tex2d = NULL;
#if VIRGL_VERSION_MAJOR >= 1
struct virgl_renderer_resource_info_ext ext;
memset(&ext, 0, sizeof(ext));
ret = virgl_renderer_resource_get_info_ext(ss.resource_id, &ext);
info = ext.base;
d3d_tex2d = ext.d3d_tex2d;
#else
memset(&info, 0, sizeof(info));
ret = virgl_renderer_resource_get_info(ss.resource_id, &info);
#endif
if (ret) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: illegal resource specified %d\n",
__func__, ss.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
qemu_console_resize(g->parent_obj.scanout[ss.scanout_id].con,
ss.r.width, ss.r.height);
virgl_renderer_force_ctx_0();
dpy_gl_scanout_texture(
g->parent_obj.scanout[ss.scanout_id].con, info.tex_id,
info.flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP,
info.width, info.height,
ss.r.x, ss.r.y, ss.r.width, ss.r.height,
d3d_tex2d);
} else {
dpy_gfx_replace_surface(
g->parent_obj.scanout[ss.scanout_id].con, NULL);
dpy_gl_scanout_disable(g->parent_obj.scanout[ss.scanout_id].con);
}
g->parent_obj.scanout[ss.scanout_id].resource_id = ss.resource_id;
}
static void virgl_cmd_submit_3d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_cmd_submit cs;
void *buf;
size_t s;
VIRTIO_GPU_FILL_CMD(cs);
trace_virtio_gpu_cmd_ctx_submit(cs.hdr.ctx_id, cs.size);
buf = g_malloc(cs.size);
s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
sizeof(cs), buf, cs.size);
if (s != cs.size) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: size mismatch (%zd/%d)",
__func__, s, cs.size);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
goto out;
}
if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
g->stats.req_3d++;
g->stats.bytes_3d += cs.size;
}
virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4);
out:
g_free(buf);
}
static void virgl_cmd_transfer_to_host_2d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_transfer_to_host_2d t2d;
struct virtio_gpu_box box;
VIRTIO_GPU_FILL_CMD(t2d);
trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
box.x = t2d.r.x;
box.y = t2d.r.y;
box.z = 0;
box.w = t2d.r.width;
box.h = t2d.r.height;
box.d = 1;
virgl_renderer_transfer_write_iov(t2d.resource_id,
0,
0,
0,
0,
(struct virgl_box *)&box,
t2d.offset, NULL, 0);
}
static void virgl_cmd_transfer_to_host_3d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_transfer_host_3d t3d;
VIRTIO_GPU_FILL_CMD(t3d);
trace_virtio_gpu_cmd_res_xfer_toh_3d(t3d.resource_id);
virgl_renderer_transfer_write_iov(t3d.resource_id,
t3d.hdr.ctx_id,
t3d.level,
t3d.stride,
t3d.layer_stride,
(struct virgl_box *)&t3d.box,
t3d.offset, NULL, 0);
}
static void
virgl_cmd_transfer_from_host_3d(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_transfer_host_3d tf3d;
VIRTIO_GPU_FILL_CMD(tf3d);
trace_virtio_gpu_cmd_res_xfer_fromh_3d(tf3d.resource_id);
virgl_renderer_transfer_read_iov(tf3d.resource_id,
tf3d.hdr.ctx_id,
tf3d.level,
tf3d.stride,
tf3d.layer_stride,
(struct virgl_box *)&tf3d.box,
tf3d.offset, NULL, 0);
}
static void virgl_resource_attach_backing(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resource_attach_backing att_rb;
struct iovec *res_iovs;
uint32_t res_niov;
int ret;
VIRTIO_GPU_FILL_CMD(att_rb);
trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
ret = virtio_gpu_create_mapping_iov(g, att_rb.nr_entries, sizeof(att_rb),
cmd, NULL, &res_iovs, &res_niov);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
ret = virgl_renderer_resource_attach_iov(att_rb.resource_id,
res_iovs, res_niov);
if (ret != 0)
virtio_gpu_cleanup_mapping_iov(g, res_iovs, res_niov);
}
static void virgl_resource_detach_backing(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resource_detach_backing detach_rb;
struct iovec *res_iovs = NULL;
int num_iovs = 0;
VIRTIO_GPU_FILL_CMD(detach_rb);
trace_virtio_gpu_cmd_res_back_detach(detach_rb.resource_id);
virgl_renderer_resource_detach_iov(detach_rb.resource_id,
&res_iovs,
&num_iovs);
if (res_iovs == NULL || num_iovs == 0) {
return;
}
virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs);
}
static void virgl_cmd_ctx_attach_resource(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_ctx_resource att_res;
VIRTIO_GPU_FILL_CMD(att_res);
trace_virtio_gpu_cmd_ctx_res_attach(att_res.hdr.ctx_id,
att_res.resource_id);
virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id);
}
static void virgl_cmd_ctx_detach_resource(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_ctx_resource det_res;
VIRTIO_GPU_FILL_CMD(det_res);
trace_virtio_gpu_cmd_ctx_res_detach(det_res.hdr.ctx_id,
det_res.resource_id);
virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id);
}
static void virgl_cmd_get_capset_info(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_get_capset_info info;
struct virtio_gpu_resp_capset_info resp;
VIRTIO_GPU_FILL_CMD(info);
memset(&resp, 0, sizeof(resp));
if (info.capset_index < g->capset_ids->len) {
resp.capset_id = g_array_index(g->capset_ids, uint32_t,
info.capset_index);
virgl_renderer_get_cap_set(resp.capset_id,
&resp.capset_max_version,
&resp.capset_max_size);
}
resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO;
virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
}
static void virgl_cmd_get_capset(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_get_capset gc;
struct virtio_gpu_resp_capset *resp;
uint32_t max_ver, max_size;
VIRTIO_GPU_FILL_CMD(gc);
virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
&max_size);
if (!max_size) {
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
resp = g_malloc0(sizeof(*resp) + max_size);
resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
virgl_renderer_fill_caps(gc.capset_id,
gc.capset_version,
(void *)resp->capset_data);
virtio_gpu_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size);
g_free(resp);
}
#if VIRGL_VERSION_MAJOR >= 1
static void virgl_cmd_resource_create_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virgl_renderer_resource_create_blob_args virgl_args = { 0 };
g_autofree struct virtio_gpu_virgl_resource *res = NULL;
struct virtio_gpu_resource_create_blob cblob;
struct virgl_renderer_resource_info info;
int ret;
if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) {
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
VIRTIO_GPU_FILL_CMD(cblob);
virtio_gpu_create_blob_bswap(&cblob);
trace_virtio_gpu_cmd_res_create_blob(cblob.resource_id, cblob.size);
if (cblob.resource_id == 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = virtio_gpu_virgl_find_resource(g, cblob.resource_id);
if (res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
__func__, cblob.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
res = g_new0(struct virtio_gpu_virgl_resource, 1);
res->base.resource_id = cblob.resource_id;
res->base.blob_size = cblob.size;
res->base.dmabuf_fd = -1;
if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_HOST3D) {
ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob),
cmd, &res->base.addrs,
&res->base.iov, &res->base.iov_cnt);
if (!ret) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
}
virgl_args.res_handle = cblob.resource_id;
virgl_args.ctx_id = cblob.hdr.ctx_id;
virgl_args.blob_mem = cblob.blob_mem;
virgl_args.blob_id = cblob.blob_id;
virgl_args.blob_flags = cblob.blob_flags;
virgl_args.size = cblob.size;
virgl_args.iovecs = res->base.iov;
virgl_args.num_iovs = res->base.iov_cnt;
ret = virgl_renderer_resource_create_blob(&virgl_args);
if (ret) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: virgl blob create error: %s\n",
__func__, strerror(-ret));
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
virtio_gpu_cleanup_mapping(g, &res->base);
return;
}
ret = virgl_renderer_resource_get_info(cblob.resource_id, &info);
if (ret) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: resource does not have info %d: %s\n",
__func__, cblob.resource_id, strerror(-ret));
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
virtio_gpu_cleanup_mapping(g, &res->base);
virgl_renderer_resource_unref(cblob.resource_id);
return;
}
res->base.dmabuf_fd = info.fd;
QTAILQ_INSERT_HEAD(&g->reslist, &res->base, next);
res = NULL;
}
static void virgl_cmd_resource_map_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_resource_map_blob mblob;
struct virtio_gpu_virgl_resource *res;
struct virtio_gpu_resp_map_info resp;
int ret;
VIRTIO_GPU_FILL_CMD(mblob);
virtio_gpu_map_blob_bswap(&mblob);
res = virtio_gpu_virgl_find_resource(g, mblob.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource does not exist %d\n",
__func__, mblob.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
ret = virtio_gpu_virgl_map_resource_blob(g, res, mblob.offset);
if (ret) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
memset(&resp, 0, sizeof(resp));
resp.hdr.type = VIRTIO_GPU_RESP_OK_MAP_INFO;
virgl_renderer_resource_get_map_info(mblob.resource_id, &resp.map_info);
virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
}
static void virgl_cmd_resource_unmap_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd,
bool *cmd_suspended)
{
struct virtio_gpu_resource_unmap_blob ublob;
struct virtio_gpu_virgl_resource *res;
int ret;
VIRTIO_GPU_FILL_CMD(ublob);
virtio_gpu_unmap_blob_bswap(&ublob);
res = virtio_gpu_virgl_find_resource(g, ublob.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource does not exist %d\n",
__func__, ublob.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
ret = virtio_gpu_virgl_unmap_resource_blob(g, res, cmd_suspended);
if (ret) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
}
static void virgl_cmd_set_scanout_blob(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
struct virtio_gpu_framebuffer fb = { 0 };
struct virtio_gpu_virgl_resource *res;
struct virtio_gpu_set_scanout_blob ss;
VIRTIO_GPU_FILL_CMD(ss);
virtio_gpu_scanout_blob_bswap(&ss);
trace_virtio_gpu_cmd_set_scanout_blob(ss.scanout_id, ss.resource_id,
ss.r.width, ss.r.height, ss.r.x,
ss.r.y);
if (ss.scanout_id >= g->parent_obj.conf.max_outputs) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
__func__, ss.scanout_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
return;
}
if (ss.resource_id == 0) {
virtio_gpu_disable_scanout(g, ss.scanout_id);
return;
}
if (ss.width < 16 ||
ss.height < 16 ||
ss.r.x + ss.r.width > ss.width ||
ss.r.y + ss.r.height > ss.height) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for"
" resource %d, rect (%d,%d)+%d,%d, fb %d %d\n",
__func__, ss.scanout_id, ss.resource_id,
ss.r.x, ss.r.y, ss.r.width, ss.r.height,
ss.width, ss.height);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
res = virtio_gpu_virgl_find_resource(g, ss.resource_id);
if (!res) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource does not exist %d\n",
__func__, ss.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
return;
}
if (res->base.dmabuf_fd < 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: resource not backed by dmabuf %d\n",
__func__, ss.resource_id);
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;
}
if (!virtio_gpu_scanout_blob_to_fb(&fb, &ss, res->base.blob_size)) {
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
g->parent_obj.enable = 1;
if (virtio_gpu_update_dmabuf(g, ss.scanout_id, &res->base, &fb, &ss.r)) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to update dmabuf\n",
__func__);
cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
return;
}
virtio_gpu_update_scanout(g, ss.scanout_id, &res->base, &fb, &ss.r);
}
#endif
void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd)
{
bool cmd_suspended = false;
VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
virgl_renderer_force_ctx_0();
switch (cmd->cmd_hdr.type) {
case VIRTIO_GPU_CMD_CTX_CREATE:
virgl_cmd_context_create(g, cmd);
break;
case VIRTIO_GPU_CMD_CTX_DESTROY:
virgl_cmd_context_destroy(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
virgl_cmd_create_resource_2d(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D:
virgl_cmd_create_resource_3d(g, cmd);
break;
case VIRTIO_GPU_CMD_SUBMIT_3D:
virgl_cmd_submit_3d(g, cmd);
break;
case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
virgl_cmd_transfer_to_host_2d(g, cmd);
break;
case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D:
virgl_cmd_transfer_to_host_3d(g, cmd);
break;
case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D:
virgl_cmd_transfer_from_host_3d(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
virgl_resource_attach_backing(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
virgl_resource_detach_backing(g, cmd);
break;
case VIRTIO_GPU_CMD_SET_SCANOUT:
virgl_cmd_set_scanout(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
virgl_cmd_resource_flush(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_UNREF:
virgl_cmd_resource_unref(g, cmd, &cmd_suspended);
break;
case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE:
/* TODO add security */
virgl_cmd_ctx_attach_resource(g, cmd);
break;
case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE:
/* TODO add security */
virgl_cmd_ctx_detach_resource(g, cmd);
break;
case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
virgl_cmd_get_capset_info(g, cmd);
break;
case VIRTIO_GPU_CMD_GET_CAPSET:
virgl_cmd_get_capset(g, cmd);
break;
case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
virtio_gpu_get_display_info(g, cmd);
break;
case VIRTIO_GPU_CMD_GET_EDID:
virtio_gpu_get_edid(g, cmd);
break;
#if VIRGL_VERSION_MAJOR >= 1
case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB:
virgl_cmd_resource_create_blob(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_MAP_BLOB:
virgl_cmd_resource_map_blob(g, cmd);
break;
case VIRTIO_GPU_CMD_RESOURCE_UNMAP_BLOB:
virgl_cmd_resource_unmap_blob(g, cmd, &cmd_suspended);
break;
case VIRTIO_GPU_CMD_SET_SCANOUT_BLOB:
virgl_cmd_set_scanout_blob(g, cmd);
break;
#endif
default:
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
break;
}
if (cmd_suspended || cmd->finished) {
return;
}
if (cmd->error) {
fprintf(stderr, "%s: ctrl 0x%x, error 0x%x\n", __func__,
cmd->cmd_hdr.type, cmd->error);
virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error);
return;
}
if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) {
virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
return;
}
trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
}
static void virgl_write_fence(void *opaque, uint32_t fence)
{
VirtIOGPU *g = opaque;
struct virtio_gpu_ctrl_command *cmd, *tmp;
QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
/*
* the guest can end up emitting fences out of order
* so we should check all fenced cmds not just the first one.
*/
if (cmd->cmd_hdr.fence_id > fence) {
continue;
}
trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
QTAILQ_REMOVE(&g->fenceq, cmd, next);
g_free(cmd);
g->inflight--;
if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
trace_virtio_gpu_dec_inflight_fences(g->inflight);
}
}
}
static virgl_renderer_gl_context
virgl_create_context(void *opaque, int scanout_idx,
struct virgl_renderer_gl_ctx_param *params)
{
VirtIOGPU *g = opaque;
QEMUGLContext ctx;
QEMUGLParams qparams;
qparams.major_ver = params->major_ver;
qparams.minor_ver = params->minor_ver;
ctx = dpy_gl_ctx_create(g->parent_obj.scanout[scanout_idx].con, &qparams);
return (virgl_renderer_gl_context)ctx;
}
static void virgl_destroy_context(void *opaque, virgl_renderer_gl_context ctx)
{
VirtIOGPU *g = opaque;
QEMUGLContext qctx = (QEMUGLContext)ctx;
dpy_gl_ctx_destroy(g->parent_obj.scanout[0].con, qctx);
}
static int virgl_make_context_current(void *opaque, int scanout_idx,
virgl_renderer_gl_context ctx)
{
VirtIOGPU *g = opaque;
QEMUGLContext qctx = (QEMUGLContext)ctx;
return dpy_gl_ctx_make_current(g->parent_obj.scanout[scanout_idx].con,
qctx);
}
static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
.version = 1,
.write_fence = virgl_write_fence,
.create_gl_context = virgl_create_context,
.destroy_gl_context = virgl_destroy_context,
.make_current = virgl_make_context_current,
};
static void virtio_gpu_print_stats(void *opaque)
{
VirtIOGPU *g = opaque;
VirtIOGPUGL *gl = VIRTIO_GPU_GL(g);
if (g->stats.requests) {
fprintf(stderr, "stats: vq req %4d, %3d -- 3D %4d (%5d)\n",
g->stats.requests,
g->stats.max_inflight,
g->stats.req_3d,
g->stats.bytes_3d);
g->stats.requests = 0;
g->stats.max_inflight = 0;
g->stats.req_3d = 0;
g->stats.bytes_3d = 0;
} else {
fprintf(stderr, "stats: idle\r");
}
timer_mod(gl->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
}
static void virtio_gpu_fence_poll(void *opaque)
{
VirtIOGPU *g = opaque;
VirtIOGPUGL *gl = VIRTIO_GPU_GL(g);
virgl_renderer_poll();
virtio_gpu_process_cmdq(g);
if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) {
timer_mod(gl->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
}
}
void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
{
virtio_gpu_fence_poll(g);
}
void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g)
{
int i;
for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
dpy_gl_scanout_disable(g->parent_obj.scanout[i].con);
}
}
void virtio_gpu_virgl_reset(VirtIOGPU *g)
{
virgl_renderer_reset();
}
int virtio_gpu_virgl_init(VirtIOGPU *g)
{
int ret;
uint32_t flags = 0;
VirtIOGPUGL *gl = VIRTIO_GPU_GL(g);
#if VIRGL_RENDERER_CALLBACKS_VERSION >= 4
if (qemu_egl_display) {
virtio_gpu_3d_cbs.version = 4;
virtio_gpu_3d_cbs.get_egl_display = virgl_get_egl_display;
}
#endif
#ifdef VIRGL_RENDERER_D3D11_SHARE_TEXTURE
if (qemu_egl_angle_d3d) {
flags |= VIRGL_RENDERER_D3D11_SHARE_TEXTURE;
}
#endif
#if VIRGL_VERSION_MAJOR >= 1
if (virtio_gpu_venus_enabled(g->parent_obj.conf)) {
flags |= VIRGL_RENDERER_VENUS | VIRGL_RENDERER_RENDER_SERVER;
}
#endif
ret = virgl_renderer_init(g, flags, &virtio_gpu_3d_cbs);
if (ret != 0) {
error_report("virgl could not be initialized: %d", ret);
return ret;
}
gl->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
virtio_gpu_fence_poll, g);
if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
gl->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
virtio_gpu_print_stats, g);
timer_mod(gl->print_stats,
qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
}
#if VIRGL_VERSION_MAJOR >= 1
gl->cmdq_resume_bh = aio_bh_new(qemu_get_aio_context(),
virtio_gpu_virgl_resume_cmdq_bh,
g);
#endif
return 0;
}
static void virtio_gpu_virgl_add_capset(GArray *capset_ids, uint32_t capset_id)
{
g_array_append_val(capset_ids, capset_id);
}
GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g)
{
uint32_t capset_max_ver, capset_max_size;
GArray *capset_ids;
capset_ids = g_array_new(false, false, sizeof(uint32_t));
/* VIRGL is always supported. */
virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_VIRGL);
virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2,
&capset_max_ver,
&capset_max_size);
if (capset_max_ver) {
virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_VIRGL2);
}
if (virtio_gpu_venus_enabled(g->parent_obj.conf)) {
virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VENUS,
&capset_max_ver,
&capset_max_size);
if (capset_max_size) {
virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_VENUS);
}
}
return capset_ids;
}
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