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mutter/src/backends/native/meta-drm-buffer.c
Jonas Ådahl 84bde805fe 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>
2021-01-22 16:47:08 +00:00

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/*
* Copyright (C) 2011 Intel Corporation.
* Copyright (C) 2016-2020 Red Hat
* Copyright (C) 2018 DisplayLink (UK) Ltd.
* Copyright (C) 2018 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Author: Daniel van Vugt <daniel.van.vugt@canonical.com>
*/
#include "config.h"
#include "backends/native/meta-drm-buffer-private.h"
#include <drm_fourcc.h>
#include "backends/native/meta-kms-device-private.h"
#include "backends/native/meta-kms-impl-device.h"
#include "backends/native/meta-kms-utils.h"
#include "backends/native/meta-kms-private.h"
#define INVALID_FB_ID 0U
enum
{
PROP_0,
PROP_DEVICE,
N_PROPS
};
static GParamSpec *obj_props[N_PROPS];
typedef struct _MetaDrmBufferPrivate
{
MetaKmsDevice *device;
uint32_t fb_id;
} MetaDrmBufferPrivate;
G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (MetaDrmBuffer, meta_drm_buffer,
G_TYPE_OBJECT)
MetaKmsDevice *
meta_drm_buffer_get_device (MetaDrmBuffer *buffer)
{
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
return priv->device;
}
gboolean
meta_drm_buffer_ensure_fb_in_impl (MetaDrmBuffer *buffer,
gboolean use_modifiers,
const MetaDrmFbArgs *fb_args,
GError **error)
{
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
MetaKmsDevice *device = priv->device;
MetaKmsImplDevice *impl_device = meta_kms_device_get_impl_device (device);
int fd;
MetaDrmFormatBuf tmp;
uint32_t fb_id;
fd = meta_kms_impl_device_get_fd (impl_device);
if (use_modifiers && fb_args->modifiers[0] != DRM_FORMAT_MOD_INVALID)
{
if (drmModeAddFB2WithModifiers (fd,
fb_args->width,
fb_args->height,
fb_args->format,
fb_args->handles,
fb_args->strides,
fb_args->offsets,
fb_args->modifiers,
&fb_id,
DRM_MODE_FB_MODIFIERS))
{
g_set_error (error,
G_IO_ERROR,
g_io_error_from_errno (errno),
"drmModeAddFB2WithModifiers failed: %s",
g_strerror (errno));
return FALSE;
}
}
else if (drmModeAddFB2 (fd,
fb_args->width,
fb_args->height,
fb_args->format,
fb_args->handles,
fb_args->strides,
fb_args->offsets,
&fb_id,
0))
{
if (fb_args->format != DRM_FORMAT_XRGB8888)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"drmModeAddFB does not support format '%s' (0x%x)",
meta_drm_format_to_string (&tmp, fb_args->format),
fb_args->format);
return FALSE;
}
if (drmModeAddFB (fd,
fb_args->width,
fb_args->height,
24,
32,
fb_args->strides[0],
fb_args->handles[0],
&fb_id))
{
g_set_error (error,
G_IO_ERROR,
g_io_error_from_errno (errno),
"drmModeAddFB failed: %s",
g_strerror (errno));
return FALSE;
}
}
priv->fb_id = fb_id;
return TRUE;
}
typedef struct
{
MetaDrmBuffer *buffer;
gboolean use_modifiers;
MetaDrmFbArgs fb_args;
} AddFbData;
static gpointer
add_fb_in_impl (MetaKmsImpl *impl,
gpointer user_data,
GError **error)
{
AddFbData *data = user_data;
if (meta_drm_buffer_ensure_fb_in_impl (data->buffer,
data->use_modifiers,
&data->fb_args,
error))
return GINT_TO_POINTER (TRUE);
else
return GINT_TO_POINTER (FALSE);
}
gboolean
meta_drm_buffer_ensure_fb_id (MetaDrmBuffer *buffer,
gboolean use_modifiers,
const MetaDrmFbArgs *fb_args,
GError **error)
{
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
AddFbData data;
data = (AddFbData) {
.buffer = buffer,
.use_modifiers = use_modifiers,
.fb_args = *fb_args,
};
if (!meta_kms_run_impl_task_sync (meta_kms_device_get_kms (priv->device),
add_fb_in_impl,
&data,
error))
return FALSE;
return TRUE;
}
typedef struct
{
MetaKmsDevice *device;
uint32_t fb_id;
} RmFbData;
static gpointer
rm_fb_in_impl (MetaKmsImpl *impl,
gpointer user_data,
GError **error)
{
RmFbData *data = user_data;
MetaKmsDevice *device = data->device;
MetaKmsImplDevice *impl_device = meta_kms_device_get_impl_device (device);
uint32_t fb_id = data->fb_id;
int fd;
int ret;
fd = meta_kms_impl_device_get_fd (impl_device);
ret = drmModeRmFB (fd, fb_id);
if (ret != 0)
g_warning ("drmModeRmFB: %s", g_strerror (-ret));
return GINT_TO_POINTER (TRUE);
}
static void
meta_drm_buffer_release_fb_id (MetaDrmBuffer *buffer)
{
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
RmFbData data;
data = (RmFbData) {
.device = priv->device,
.fb_id = priv->fb_id,
};
meta_kms_run_impl_task_sync (meta_kms_device_get_kms (priv->device),
rm_fb_in_impl,
&data,
NULL);
priv->fb_id = 0;
}
uint32_t
meta_drm_buffer_get_fb_id (MetaDrmBuffer *buffer)
{
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
return priv->fb_id;
}
int
meta_drm_buffer_get_width (MetaDrmBuffer *buffer)
{
return META_DRM_BUFFER_GET_CLASS (buffer)->get_width (buffer);
}
int
meta_drm_buffer_get_height (MetaDrmBuffer *buffer)
{
return META_DRM_BUFFER_GET_CLASS (buffer)->get_height (buffer);
}
int
meta_drm_buffer_get_stride (MetaDrmBuffer *buffer)
{
return META_DRM_BUFFER_GET_CLASS (buffer)->get_stride (buffer);
}
uint32_t
meta_drm_buffer_get_format (MetaDrmBuffer *buffer)
{
return META_DRM_BUFFER_GET_CLASS (buffer)->get_format (buffer);
}
static void
meta_drm_buffer_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaDrmBuffer *buffer = META_DRM_BUFFER (object);
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
switch (prop_id)
{
case PROP_DEVICE:
g_value_set_object (value, priv->device);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_drm_buffer_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MetaDrmBuffer *buffer = META_DRM_BUFFER (object);
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
switch (prop_id)
{
case PROP_DEVICE:
priv->device = g_value_get_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_drm_buffer_finalize (GObject *object)
{
MetaDrmBuffer *buffer = META_DRM_BUFFER (object);
MetaDrmBufferPrivate *priv = meta_drm_buffer_get_instance_private (buffer);
if (priv->fb_id != INVALID_FB_ID)
meta_drm_buffer_release_fb_id (buffer);
G_OBJECT_CLASS (meta_drm_buffer_parent_class)->finalize (object);
}
static void
meta_drm_buffer_init (MetaDrmBuffer *buffer)
{
}
static void
meta_drm_buffer_class_init (MetaDrmBufferClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = meta_drm_buffer_get_property;
object_class->set_property = meta_drm_buffer_set_property;
object_class->finalize = meta_drm_buffer_finalize;
obj_props[PROP_DEVICE] =
g_param_spec_object ("device",
"device",
"MetaKmsDevice",
META_TYPE_KMS_DEVICE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, N_PROPS, obj_props);
}
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