289 lines
11 KiB
C++
289 lines
11 KiB
C++
// Copyright 2018 The ChromiumOS Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "../sommelier.h" // NOLINT(build/include_directory)
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#include "../sommelier-tracing.h" // NOLINT(build/include_directory)
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#include <assert.h>
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#include <gbm.h>
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#include <libdrm/drm_fourcc.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <xf86drm.h>
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#include "../virtualization/linux-headers/virtgpu_drm.h" // NOLINT(build/include_directory)
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#include "drm-server-protocol.h" // NOLINT(build/include_directory)
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#include "linux-dmabuf-unstable-v1-client-protocol.h" // NOLINT(build/include_directory)
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struct sl_host_drm {
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struct sl_context* ctx;
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uint32_t version;
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struct wl_resource* resource;
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struct zwp_linux_dmabuf_v1* linux_dmabuf_proxy;
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struct wl_callback* callback;
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};
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static void sl_drm_authenticate(struct wl_client* client,
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struct wl_resource* resource,
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uint32_t id) {
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TRACE_EVENT("drm", "sl_drm_authenticate");
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wl_drm_send_authenticated(resource);
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}
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static void sl_drm_create_buffer(struct wl_client* client,
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struct wl_resource* resource,
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uint32_t id,
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uint32_t name,
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int32_t width,
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int32_t height,
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uint32_t stride,
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uint32_t format) {
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assert(0);
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}
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static void sl_drm_create_planar_buffer(struct wl_client* client,
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struct wl_resource* resource,
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uint32_t id,
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uint32_t name,
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int32_t width,
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int32_t height,
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uint32_t format,
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int32_t offset0,
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int32_t stride0,
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int32_t offset1,
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int32_t stride1,
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int32_t offset2,
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int32_t stride2) {
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assert(0);
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}
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static void sl_drm_sync(struct sl_context* ctx,
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struct sl_sync_point* sync_point) {
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int drm_fd = gbm_device_get_fd(ctx->gbm);
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struct drm_prime_handle prime_handle;
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int ret;
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// First imports the prime fd to a gem handle. This will fail if this
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// function was not passed a prime handle that can be imported by the drm
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// device given to sommelier.
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memset(&prime_handle, 0, sizeof(prime_handle));
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prime_handle.fd = sync_point->fd;
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TRACE_EVENT("drm", "sl_drm_sync", "prime_fd", prime_handle.fd);
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ret = drmIoctl(drm_fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
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if (!ret) {
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struct drm_virtgpu_3d_wait wait_arg;
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struct drm_gem_close gem_close;
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// Then attempts to wait for GPU operations to complete. This will fail
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// silently if the drm device passed to sommelier is not a virtio-gpu
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// device.
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memset(&wait_arg, 0, sizeof(wait_arg));
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wait_arg.handle = prime_handle.handle;
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drmIoctl(drm_fd, DRM_IOCTL_VIRTGPU_WAIT, &wait_arg);
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// Always close the handle we imported.
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memset(&gem_close, 0, sizeof(gem_close));
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gem_close.handle = prime_handle.handle;
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drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
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}
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}
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static void sl_drm_create_prime_buffer(struct wl_client* client,
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struct wl_resource* resource,
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uint32_t id,
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int32_t name,
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int32_t width,
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int32_t height,
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uint32_t format,
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int32_t offset0,
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int32_t stride0,
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int32_t offset1,
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int32_t stride1,
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int32_t offset2,
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int32_t stride2) {
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TRACE_EVENT("drm", "sl_drm_create_prime_buffer", "id", id);
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struct sl_host_drm* host =
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static_cast<sl_host_drm*>(wl_resource_get_user_data(resource));
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struct zwp_linux_buffer_params_v1* buffer_params;
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assert(name >= 0);
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assert(!offset1);
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assert(!stride1);
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assert(!offset2);
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assert(!stride2);
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// Attempts to correct stride0 with virtio-gpu specific resource information,
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// if available. Ideally mesa/gbm should have the correct stride. Remove
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// after crbug.com/892242 is resolved in mesa.
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int is_gpu_buffer = 0;
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if (host->ctx->gbm) {
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int drm_fd = gbm_device_get_fd(host->ctx->gbm);
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struct drm_prime_handle prime_handle;
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int ret;
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// First imports the prime fd to a gem handle. This will fail if this
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// function was not passed a prime handle that can be imported by the drm
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// device given to sommelier.
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memset(&prime_handle, 0, sizeof(prime_handle));
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prime_handle.fd = name;
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ret = drmIoctl(drm_fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &prime_handle);
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if (!ret) {
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struct drm_virtgpu_resource_info_cros info_arg;
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struct drm_gem_close gem_close;
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// Then attempts to get resource information. This will fail silently if
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// the drm device passed to sommelier is not a virtio-gpu device.
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memset(&info_arg, 0, sizeof(info_arg));
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info_arg.bo_handle = prime_handle.handle;
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info_arg.type = VIRTGPU_RESOURCE_INFO_TYPE_EXTENDED;
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ret = drmIoctl(drm_fd, DRM_IOCTL_VIRTGPU_RESOURCE_INFO_CROS, &info_arg);
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// Correct stride0 if we are able to get proper resource info.
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if (!ret) {
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if (info_arg.stride)
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stride0 = info_arg.stride;
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is_gpu_buffer = 1;
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}
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// Always close the handle we imported.
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memset(&gem_close, 0, sizeof(gem_close));
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gem_close.handle = prime_handle.handle;
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drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
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}
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}
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buffer_params =
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zwp_linux_dmabuf_v1_create_params(host->ctx->linux_dmabuf->internal);
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zwp_linux_buffer_params_v1_add(buffer_params, name, 0, offset0, stride0,
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DRM_FORMAT_MOD_INVALID >> 32,
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DRM_FORMAT_MOD_INVALID & 0xffffffff);
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struct sl_host_buffer* host_buffer =
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sl_create_host_buffer(host->ctx, client, id,
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zwp_linux_buffer_params_v1_create_immed(
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buffer_params, width, height, format, 0),
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width, height, /*is_drm=*/true);
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if (is_gpu_buffer) {
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host_buffer->sync_point = sl_sync_point_create(name);
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host_buffer->sync_point->sync = sl_drm_sync;
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host_buffer->shm_format = sl_shm_format_for_drm_format(format);
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// Create our DRM PRIME mmap container
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// This is simply a container that records necessary information
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// to map the DRM buffer through the GBM API's.
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// The GBM API's may need to perform a rather heavy copy of the
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// buffer into memory accessible by the CPU to perform the mapping
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// operation.
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// For this reason, the GBM mapping API's will not be used until we
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// are absolutely certain that the buffers contents need to be
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// accessed. This will be done through a call to sl_mmap_begin_access.
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//
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// We are also checking for a single plane format as this container
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// is currently only defined for single plane format buffers.
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if (sl_shm_num_planes_for_shm_format(host_buffer->shm_format) == 1) {
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host_buffer->shm_mmap = sl_drm_prime_mmap_create(
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host->ctx->gbm, name,
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sl_shm_bpp_for_shm_format(host_buffer->shm_format),
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sl_shm_num_planes_for_shm_format(host_buffer->shm_format), stride0,
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width, height, format);
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}
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} else {
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close(name);
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}
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zwp_linux_buffer_params_v1_destroy(buffer_params);
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}
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static const struct wl_drm_interface sl_drm_implementation = {
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sl_drm_authenticate, sl_drm_create_buffer, sl_drm_create_planar_buffer,
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sl_drm_create_prime_buffer};
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static void sl_destroy_host_drm(struct wl_resource* resource) {
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struct sl_host_drm* host =
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static_cast<sl_host_drm*>(wl_resource_get_user_data(resource));
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zwp_linux_dmabuf_v1_destroy(host->linux_dmabuf_proxy);
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wl_callback_destroy(host->callback);
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wl_resource_set_user_data(resource, NULL);
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delete host;
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}
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static void sl_drm_format(void* data,
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struct zwp_linux_dmabuf_v1* linux_dmabuf,
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uint32_t format) {
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struct sl_host_drm* host = static_cast<sl_host_drm*>(
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zwp_linux_dmabuf_v1_get_user_data(linux_dmabuf));
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switch (format) {
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case WL_DRM_FORMAT_RGB565:
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case WL_DRM_FORMAT_ARGB8888:
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case WL_DRM_FORMAT_ABGR8888:
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case WL_DRM_FORMAT_XRGB8888:
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case WL_DRM_FORMAT_XBGR8888:
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wl_drm_send_format(host->resource, format);
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break;
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default:
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break;
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}
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}
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static void sl_drm_modifier(void* data,
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struct zwp_linux_dmabuf_v1* linux_dmabuf,
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uint32_t format,
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uint32_t modifier_hi,
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uint32_t modifier_lo) {}
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static const struct zwp_linux_dmabuf_v1_listener sl_linux_dmabuf_listener = {
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sl_drm_format, sl_drm_modifier};
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static void sl_drm_callback_done(void* data,
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struct wl_callback* callback,
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uint32_t serial) {
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struct sl_host_drm* host =
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static_cast<sl_host_drm*>(wl_callback_get_user_data(callback));
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if (host->ctx->drm_device)
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wl_drm_send_device(host->resource, host->ctx->drm_device);
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if (host->version >= WL_DRM_CREATE_PRIME_BUFFER_SINCE_VERSION)
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wl_drm_send_capabilities(host->resource, WL_DRM_CAPABILITY_PRIME);
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}
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static const struct wl_callback_listener sl_drm_callback_listener = {
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sl_drm_callback_done};
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static void sl_bind_host_drm(struct wl_client* client,
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void* data,
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uint32_t version,
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uint32_t id) {
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struct sl_context* ctx = (struct sl_context*)data;
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struct sl_host_drm* host = new sl_host_drm();
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host->ctx = ctx;
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host->version = MIN(version, 2);
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host->resource =
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wl_resource_create(client, &wl_drm_interface, host->version, id);
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wl_resource_set_implementation(host->resource, &sl_drm_implementation, host,
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sl_destroy_host_drm);
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host->linux_dmabuf_proxy = static_cast<zwp_linux_dmabuf_v1*>(wl_registry_bind(
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wl_display_get_registry(ctx->display), ctx->linux_dmabuf->id,
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&zwp_linux_dmabuf_v1_interface, ctx->linux_dmabuf->version));
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zwp_linux_dmabuf_v1_add_listener(host->linux_dmabuf_proxy,
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&sl_linux_dmabuf_listener, host);
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host->callback = wl_display_sync(ctx->display);
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wl_callback_add_listener(host->callback, &sl_drm_callback_listener, host);
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}
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struct sl_global* sl_drm_global_create(struct sl_context* ctx) {
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assert(ctx->linux_dmabuf);
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// Early out if DMABuf protocol version is not sufficient.
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if (ctx->linux_dmabuf->version < 2)
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return NULL;
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return sl_global_create(ctx, &wl_drm_interface, 2, ctx, sl_bind_host_drm);
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}
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