native: Consolidate DRM buffer management to MetaDrmBuffer types
This commit consolidates DRM buffer management to the MetaDrmBuffer types, where the base type handles the common functionality (such as managing the framebuffer id using drmModeAdd*/RMFb()), and the sub types their corresponding type specific behavior. This means that drmModeAdd*/RmFB() handling is moved from meta-gpu-kms.c to meta-drm-buffer.c; dumb buffer allocation/management from meta-renderer-native.c. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1488>
This commit is contained in:
Jonas Ådahl
@ -25,41 +25,322 @@
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#include "backends/native/meta-drm-buffer-dumb.h"
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#include <xf86drm.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include "backends/native/meta-kms-device-private.h"
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#include "backends/native/meta-kms-impl-device.h"
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#include "backends/native/meta-kms-private.h"
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struct _MetaDrmBufferDumb
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{
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MetaDrmBuffer parent;
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uint32_t fb_id;
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uint32_t handle;
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void *map;
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uint64_t map_size;
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int width;
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int height;
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int stride_bytes;
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uint32_t drm_format;
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int dmabuf_fd;
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};
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G_DEFINE_TYPE (MetaDrmBufferDumb, meta_drm_buffer_dumb, META_TYPE_DRM_BUFFER)
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MetaDrmBufferDumb *
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meta_drm_buffer_dumb_new (uint32_t dumb_fb_id)
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static int
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meta_drm_buffer_dumb_get_width (MetaDrmBuffer *buffer)
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{
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MetaDrmBufferDumb *buffer_dumb = META_DRM_BUFFER_DUMB (buffer);
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return buffer_dumb->width;
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}
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static int
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meta_drm_buffer_dumb_get_height (MetaDrmBuffer *buffer)
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{
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MetaDrmBufferDumb *buffer_dumb = META_DRM_BUFFER_DUMB (buffer);
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return buffer_dumb->height;
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}
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static int
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meta_drm_buffer_dumb_get_stride (MetaDrmBuffer *buffer)
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{
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MetaDrmBufferDumb *buffer_dumb = META_DRM_BUFFER_DUMB (buffer);
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return buffer_dumb->stride_bytes;
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}
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static uint32_t
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meta_drm_buffer_dumb_get_format (MetaDrmBuffer *buffer)
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{
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MetaDrmBufferDumb *buffer_dumb = META_DRM_BUFFER_DUMB (buffer);
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return buffer_dumb->drm_format;
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}
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typedef struct
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{
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MetaDrmBufferDumb *buffer_dumb;
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buffer_dumb = g_object_new (META_TYPE_DRM_BUFFER_DUMB, NULL);
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buffer_dumb->fb_id = dumb_fb_id;
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int out_dmabuf_fd;
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} HandleToFdData;
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static gpointer
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handle_to_fd_in_impl (MetaKmsImpl *impl,
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gpointer user_data,
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GError **error)
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{
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HandleToFdData *data = user_data;
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MetaDrmBufferDumb *buffer_dumb = data->buffer_dumb;
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MetaDrmBuffer *buffer = META_DRM_BUFFER (buffer_dumb);
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MetaKmsDevice *device = meta_drm_buffer_get_device (buffer);
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MetaKmsImplDevice *impl_device = meta_kms_device_get_impl_device (device);
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int fd;
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int ret;
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int dmabuf_fd;
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fd = meta_kms_impl_device_get_fd (impl_device);
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ret = drmPrimeHandleToFD (fd, buffer_dumb->handle, DRM_CLOEXEC,
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&dmabuf_fd);
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if (ret)
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{
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g_set_error (error, G_IO_ERROR, g_io_error_from_errno (-ret),
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"drmPrimeHandleToFd: %s", g_strerror (-ret));
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return GINT_TO_POINTER (FALSE);
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}
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data->out_dmabuf_fd = dmabuf_fd;
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return GINT_TO_POINTER (TRUE);
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}
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int
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meta_drm_buffer_dumb_ensure_dmabuf_fd (MetaDrmBufferDumb *buffer_dumb,
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GError **error)
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{
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MetaDrmBuffer *buffer = META_DRM_BUFFER (buffer_dumb);
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MetaKmsDevice *device = meta_drm_buffer_get_device (buffer);
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HandleToFdData data;
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if (buffer_dumb->dmabuf_fd != -1)
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return buffer_dumb->dmabuf_fd;
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data = (HandleToFdData) {
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.buffer_dumb = buffer_dumb,
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};
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if (!meta_kms_run_impl_task_sync (meta_kms_device_get_kms (device),
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handle_to_fd_in_impl,
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&data,
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error))
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return -1;
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buffer_dumb->dmabuf_fd = data.out_dmabuf_fd;
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return buffer_dumb->dmabuf_fd;
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}
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void *
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meta_drm_buffer_dumb_get_data (MetaDrmBufferDumb *buffer_dumb)
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{
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return buffer_dumb->map;
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}
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typedef struct
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{
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MetaDrmBufferDumb *buffer_dumb;
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int width;
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int height;
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uint32_t format;
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} InitDumbData;
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static gpointer
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init_dumb_buffer_in_impl (MetaKmsImpl *impl,
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gpointer user_data,
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GError **error)
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{
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InitDumbData *data = user_data;
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MetaDrmBufferDumb *buffer_dumb = data->buffer_dumb;
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MetaDrmBuffer *buffer = META_DRM_BUFFER (buffer_dumb);
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MetaKmsDevice *device = meta_drm_buffer_get_device (buffer);
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MetaKmsImplDevice *impl_device = meta_kms_device_get_impl_device (device);
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int fd;
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struct drm_mode_create_dumb create_arg;
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struct drm_mode_destroy_dumb destroy_arg;
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struct drm_mode_map_dumb map_arg;
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void *map;
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MetaDrmFbArgs fb_args;
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fd = meta_kms_impl_device_get_fd (impl_device);
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create_arg = (struct drm_mode_create_dumb) {
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.bpp = 32, /* RGBX8888 */
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.width = data->width,
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.height = data->height
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};
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if (drmIoctl (fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg) != 0)
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{
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g_set_error (error, G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"Failed to create dumb drm buffer: %s",
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g_strerror (errno));
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goto err_ioctl;
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}
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fb_args = (MetaDrmFbArgs) {
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.width = data->width,
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.height = data->height,
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.format = data->format,
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.handles = { create_arg.handle },
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.strides = { create_arg.pitch },
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};
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if (!meta_drm_buffer_ensure_fb_id (buffer, FALSE, &fb_args, error))
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goto err_add_fb;
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map_arg = (struct drm_mode_map_dumb) {
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.handle = create_arg.handle
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};
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if (drmIoctl (fd, DRM_IOCTL_MODE_MAP_DUMB,
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&map_arg) != 0)
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{
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g_set_error (error, G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"Failed to map dumb drm buffer: %s",
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g_strerror (errno));
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goto err_map_dumb;
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}
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map = mmap (NULL, create_arg.size, PROT_WRITE, MAP_SHARED,
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fd, map_arg.offset);
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if (map == MAP_FAILED)
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{
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g_set_error (error, G_IO_ERROR,
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G_IO_ERROR_FAILED,
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"Failed to mmap dumb drm buffer memory: %s",
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g_strerror (errno));
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goto err_mmap;
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}
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buffer_dumb->handle = create_arg.handle;
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buffer_dumb->map = map;
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buffer_dumb->map_size = create_arg.size;
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buffer_dumb->width = data->width;
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buffer_dumb->height = data->height;
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buffer_dumb->stride_bytes = create_arg.pitch;
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buffer_dumb->drm_format = data->format;
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return FALSE;
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err_mmap:
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err_map_dumb:
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err_add_fb:
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destroy_arg = (struct drm_mode_destroy_dumb) {
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.handle = create_arg.handle
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};
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drmIoctl (fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
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err_ioctl:
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return FALSE;
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}
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MetaDrmBufferDumb *
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meta_drm_buffer_dumb_new (MetaKmsDevice *device,
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int width,
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int height,
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uint32_t format,
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GError **error)
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{
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MetaDrmBufferDumb *buffer_dumb;
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InitDumbData data;
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buffer_dumb = g_object_new (META_TYPE_DRM_BUFFER_DUMB,
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"device", device,
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NULL);
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data = (InitDumbData) {
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.buffer_dumb = buffer_dumb,
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.width = width,
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.height = height,
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.format = format,
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};
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if (meta_kms_run_impl_task_sync (meta_kms_device_get_kms (device),
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init_dumb_buffer_in_impl,
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&data,
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error))
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{
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g_object_unref (buffer_dumb);
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return NULL;
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}
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return buffer_dumb;
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}
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static uint32_t
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meta_drm_buffer_dumb_get_fb_id (MetaDrmBuffer *buffer)
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static gpointer
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destroy_dumb_in_impl (MetaKmsImpl *impl,
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gpointer user_data,
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GError **error)
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{
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return META_DRM_BUFFER_DUMB (buffer)->fb_id;
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MetaDrmBufferDumb *buffer_dumb = user_data;
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MetaDrmBuffer *buffer = META_DRM_BUFFER (buffer_dumb);
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MetaKmsDevice *device = meta_drm_buffer_get_device (buffer);
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MetaKmsImplDevice *impl_device = meta_kms_device_get_impl_device (device);
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int fd;
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struct drm_mode_destroy_dumb destroy_arg;
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fd = meta_kms_impl_device_get_fd (impl_device);
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munmap (buffer_dumb->map, buffer_dumb->map_size);
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destroy_arg = (struct drm_mode_destroy_dumb) {
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.handle = buffer_dumb->handle
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};
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drmIoctl (fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
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if (buffer_dumb->dmabuf_fd != -1)
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close (buffer_dumb->dmabuf_fd);
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return GINT_TO_POINTER (TRUE);
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}
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static void
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meta_drm_buffer_dumb_finalize (GObject *object)
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{
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MetaDrmBufferDumb *buffer_dumb = META_DRM_BUFFER_DUMB (object);
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if (buffer_dumb->handle)
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{
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MetaDrmBuffer *buffer = META_DRM_BUFFER (buffer_dumb);
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MetaKmsDevice *device = meta_drm_buffer_get_device (buffer);
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meta_kms_run_impl_task_sync (meta_kms_device_get_kms (device),
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destroy_dumb_in_impl,
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buffer_dumb,
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NULL);
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}
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G_OBJECT_CLASS (meta_drm_buffer_dumb_parent_class)->finalize (object);
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}
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static void
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meta_drm_buffer_dumb_init (MetaDrmBufferDumb *buffer_dumb)
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{
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buffer_dumb->dmabuf_fd = -1;
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}
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static void
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meta_drm_buffer_dumb_class_init (MetaDrmBufferDumbClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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MetaDrmBufferClass *buffer_class = META_DRM_BUFFER_CLASS (klass);
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buffer_class->get_fb_id = meta_drm_buffer_dumb_get_fb_id;
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object_class->finalize = meta_drm_buffer_dumb_finalize;
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buffer_class->get_width = meta_drm_buffer_dumb_get_width;
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buffer_class->get_height = meta_drm_buffer_dumb_get_height;
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buffer_class->get_stride = meta_drm_buffer_dumb_get_stride;
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buffer_class->get_format = meta_drm_buffer_dumb_get_format;
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}
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