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drm: Require all surfaces to always have a mode set

This commit is contained in:
Victor Brekenfeld 2020-04-26 16:32:44 +02:00
parent b6087bf2d2
commit d6fa2e96cf
16 changed files with 201 additions and 153 deletions
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2
anvil/src/udev.rs
View File

@ -319,7 +319,7 @@ impl<S: SessionNotifier, Data: 'static> UdevHandlerImpl<S, Data> {
for crtc in res_handles.filter_crtcs(encoder_info.possible_crtcs()) {
if let Entry::Vacant(entry) = backends.entry(crtc) {
let renderer = GliumDrawer::init(
device.create_surface(crtc).unwrap(),
device.create_surface(crtc, connector_info.modes()[0], &[connector_info.handle()]).unwrap(),
egl_buffer_reader.clone(),
logger.clone(),
);

4
examples/raw_atomic_drm.rs
View File

@ -96,9 +96,7 @@ fn main() {
let mode = connector_info.modes()[0]; // Use first mode (usually highest resoltion, but in reality you should filter and sort and check and match with other connectors, if you use more then one.)
// Initialize the hardware backend
let surface = Rc::new(device.create_surface(crtc).unwrap());
surface.set_connectors(&[connector_info.handle()]).unwrap();
surface.use_mode(Some(mode)).unwrap();
let surface = Rc::new(device.create_surface(crtc, mode, &[connector_info.handle()]).unwrap());
for conn in surface.current_connectors().into_iter() {
if conn != connector_info.handle() {

4
examples/raw_legacy_drm.rs
View File

@ -78,10 +78,8 @@ fn main() {
let mode = connector_info.modes()[0]; // Use first mode (usually highest resoltion, but in reality you should filter and sort and check and match with other connectors, if you use more then one.)
// Initialize the hardware backend
let surface = Rc::new(device.create_surface(crtc).unwrap());
let surface = Rc::new(device.create_surface(crtc, mode, &[connector_info.handle()]).unwrap());
surface.use_mode(Some(mode)).unwrap();
surface.set_connectors(&[connector_info.handle()]).unwrap();
/*
* Lets create buffers and framebuffers.
* We use drm-rs DumbBuffers, because they always work and require little to no setup.

10
src/backend/drm/atomic/mod.rs
View File

@ -19,7 +19,7 @@ use std::sync::{
use drm::control::{atomic::AtomicModeReq, AtomicCommitFlags, Device as ControlDevice, Event};
use drm::control::{
connector, crtc, encoder, framebuffer, plane, property, PropertyValueSet, ResourceHandle, ResourceHandles,
connector, crtc, encoder, framebuffer, plane, property, Mode, PropertyValueSet, ResourceHandle, ResourceHandles,
};
use drm::SystemError as DrmError;
use drm::{ClientCapability, Device as BasicDevice};
@ -339,7 +339,7 @@ impl<A: AsRawFd + 'static> Device for AtomicDrmDevice<A> {
let _ = self.handler.take();
}
fn create_surface(&mut self, crtc: crtc::Handle) -> Result<AtomicDrmSurface<A>, Error> {
fn create_surface(&mut self, crtc: crtc::Handle, mode: Mode, connectors: &[connector::Handle]) -> Result<AtomicDrmSurface<A>, Error> {
if self.backends.borrow().contains_key(&crtc) {
return Err(Error::CrtcAlreadyInUse(crtc));
}
@ -348,9 +348,15 @@ impl<A: AsRawFd + 'static> Device for AtomicDrmDevice<A> {
return Err(Error::DeviceInactive);
}
if connectors.is_empty() {
return Err(Error::SurfaceWithoutConnectors(crtc));
}
let backend = Rc::new(AtomicDrmSurfaceInternal::new(
self.dev.clone(),
crtc,
mode,
connectors,
self.logger.new(o!("crtc" => format!("{:?}", crtc))),
)?);

125
src/backend/drm/atomic/surface.rs
View File

@ -1,7 +1,7 @@
use drm::buffer::Buffer;
use drm::control::atomic::AtomicModeReq;
use drm::control::Device as ControlDevice;
use drm::control::{connector, crtc, framebuffer, plane, property, AtomicCommitFlags, Mode, PlaneType};
use drm::control::{connector, crtc, dumbbuffer::DumbBuffer, framebuffer, plane, property, AtomicCommitFlags, Mode, PlaneType};
use drm::Device as BasicDevice;
use std::cell::Cell;
@ -26,8 +26,8 @@ pub struct CursorState {
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct State {
pub mode: Option<Mode>,
pub blob: Option<property::Value<'static>>,
pub mode: Mode,
pub blob: property::Value<'static>,
pub connectors: HashSet<connector::Handle>,
}
@ -45,6 +45,7 @@ pub(super) struct AtomicDrmSurfaceInternal<A: AsRawFd + 'static> {
pub(super) state: RwLock<State>,
pub(super) pending: RwLock<State>,
pub(super) logger: ::slog::Logger,
init_buffer: Cell<Option<(DumbBuffer, framebuffer::Handle)>>,
}
impl<A: AsRawFd + 'static> AsRawFd for AtomicDrmSurfaceInternal<A> {
@ -57,27 +58,37 @@ impl<A: AsRawFd + 'static> BasicDevice for AtomicDrmSurfaceInternal<A> {}
impl<A: AsRawFd + 'static> ControlDevice for AtomicDrmSurfaceInternal<A> {}
impl<A: AsRawFd + 'static> AtomicDrmSurfaceInternal<A> {
pub(crate) fn new(dev: Rc<Dev<A>>, crtc: crtc::Handle, logger: ::slog::Logger) -> Result<Self, Error> {
pub(crate) fn new(dev: Rc<Dev<A>>, crtc: crtc::Handle, mode: Mode, connectors: &[connector::Handle], logger: ::slog::Logger) -> Result<Self, Error> {
let crtc_info = dev.get_crtc(crtc).compat().map_err(|source| Error::Access {
errmsg: "Error loading crtc info",
dev: dev.dev_path(),
source,
})?;
let mode = crtc_info.mode();
let blob = match mode {
Some(mode) => Some(
dev.create_property_blob(mode)
// If we have no current mode, we create a fake one, which will not match (and thus gets overriden on the commit below).
// A better fix would probably be making mode an `Option`, but that would mean
// we need to be sure, we require a mode to always be set without relying on the compiler.
// So we cheat, because it works and is easier to handle later.
let current_mode = crtc_info.mode().unwrap_or_else(|| unsafe { std::mem::zeroed() });
let current_blob = match crtc_info.mode() {
Some(mode) => dev.create_property_blob(mode)
.compat()
.map_err(|source| Error::Access {
errmsg: "Failed to create Property Blob for mode",
dev: dev.dev_path(),
source,
})?,
),
None => None,
None => property::Value::Unknown(0),
};
let blob = dev.create_property_blob(mode)
.compat()
.map_err(|source| Error::Access {
errmsg: "Failed to create Property Blob for mode",
dev: dev.dev_path(),
source,
})?;
let res_handles = ControlDevice::resource_handles(&*dev)
.compat()
.map_err(|source| Error::Access {
@ -86,12 +97,8 @@ impl<A: AsRawFd + 'static> AtomicDrmSurfaceInternal<A> {
source,
})?;
let mut state = State {
mode,
blob,
connectors: HashSet::new(),
};
let mut current_connectors = HashSet::new();
for conn in res_handles.connectors() {
let crtc_prop = dev
.prop_mapping
@ -113,7 +120,7 @@ impl<A: AsRawFd + 'static> AtomicDrmSurfaceInternal<A> {
crtc_prop_info.value_type().convert_value(val)
{
if conn_crtc == crtc {
state.connectors.insert(*conn);
current_connectors.insert(*conn);
}
}
break;
@ -121,13 +128,23 @@ impl<A: AsRawFd + 'static> AtomicDrmSurfaceInternal<A> {
}
}
}
let state = State {
mode: current_mode,
blob: current_blob,
connectors: current_connectors,
};
let pending = State {
mode,
blob,
connectors: connectors.into_iter().copied().collect(),
};
let (primary, cursor) =
AtomicDrmSurfaceInternal::find_planes(&dev, crtc).ok_or(Error::NoSuitablePlanes {
crtc,
dev: dev.dev_path(),
})?;
Ok(AtomicDrmSurfaceInternal {
let surface = AtomicDrmSurfaceInternal {
dev,
crtc,
cursor: CursorState {
@ -136,10 +153,22 @@ impl<A: AsRawFd + 'static> AtomicDrmSurfaceInternal<A> {
hotspot: Cell::new((0, 0)),
},
planes: Planes { primary, cursor },
state: RwLock::new(state.clone()),
pending: RwLock::new(state),
state: RwLock::new(state),
pending: RwLock::new(pending),
logger,
})
init_buffer: Cell::new(None),
};
Ok(surface)
}
}
impl<A: AsRawFd + 'static> Drop for AtomicDrmSurfaceInternal<A> {
fn drop(&mut self) {
if let Some((db, fb)) = self.init_buffer.take() {
let _ = self.destroy_framebuffer(fb);
let _ = self.destroy_dumb_buffer(db);
}
}
}
@ -159,11 +188,11 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
self.pending.read().unwrap().connectors.clone()
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.state.read().unwrap().mode
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.pending.read().unwrap().mode
}
@ -180,15 +209,15 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
let mut pending = self.pending.write().unwrap();
// check if the connector can handle the current mode
if info.modes().contains(pending.mode.as_ref().unwrap()) {
if info.modes().contains(&pending.mode) {
// check if config is supported
let req = self.build_request(
&mut [conn].iter(),
&mut [].iter(),
&self.planes,
None,
pending.mode,
pending.blob,
Some(pending.mode),
Some(pending.blob),
)?;
self.atomic_commit(
&[AtomicCommitFlags::AllowModeset, AtomicCommitFlags::TestOnly],
@ -202,7 +231,7 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
Ok(())
} else {
Err(Error::ModeNotSuitable(pending.mode.unwrap()))
Err(Error::ModeNotSuitable(pending.mode))
}
}
@ -215,8 +244,8 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
&mut [conn].iter(),
&self.planes,
None,
pending.mode,
pending.blob,
Some(pending.mode),
Some(pending.blob),
)?;
self.atomic_commit(
&[AtomicCommitFlags::AllowModeset, AtomicCommitFlags::TestOnly],
@ -244,8 +273,8 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
&mut removed,
&self.planes,
None,
pending.mode,
pending.blob,
Some(pending.mode),
Some(pending.blob),
)?;
self.atomic_commit(
@ -259,30 +288,26 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
Ok(())
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Error> {
let mut pending = self.pending.write().unwrap();
// check if new config is supported
let new_blob = Some(match mode {
Some(mode) => self
.dev
let new_blob = self
.create_property_blob(mode)
.compat()
.map_err(|source| Error::Access {
errmsg: "Failed to create Property Blob for mode",
dev: self.dev_path(),
source,
})?,
None => property::Value::Unknown(0),
});
})?;
let req = self.build_request(
&mut pending.connectors.iter(),
&mut [].iter(),
&self.planes,
None,
mode,
new_blob,
Some(mode),
Some(new_blob),
)?;
if let Err(err) = self
.atomic_commit(
@ -292,7 +317,7 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurfaceInternal<A> {
.compat()
.map_err(|_| Error::TestFailed(self.crtc))
{
let _ = self.dev.destroy_property_blob(new_blob.unwrap().into());
let _ = self.dev.destroy_property_blob(new_blob.into());
return Err(err);
}
@ -343,7 +368,7 @@ impl<A: AsRawFd + 'static> RawSurface for AtomicDrmSurfaceInternal<A> {
info!(
self.logger,
"Setting new mode: {:?}",
pending.mode.as_ref().unwrap().name()
pending.mode.name()
);
}
@ -355,8 +380,8 @@ impl<A: AsRawFd + 'static> RawSurface for AtomicDrmSurfaceInternal<A> {
&mut removed,
&self.planes,
Some(framebuffer),
pending.mode,
pending.blob,
Some(pending.mode),
Some(pending.blob),
)?;
if let Err(err) = self
@ -380,17 +405,15 @@ impl<A: AsRawFd + 'static> RawSurface for AtomicDrmSurfaceInternal<A> {
&mut [].iter(),
&self.planes,
Some(framebuffer),
current.mode,
current.blob,
Some(current.mode),
Some(current.blob),
)?
} else {
if current.mode != pending.mode {
if let Some(blob) = current.blob {
if let Err(err) = self.dev.destroy_property_blob(blob.into()) {
if let Err(err) = self.dev.destroy_property_blob(current.blob.into()) {
warn!(self.logger, "Failed to destory old mode property blob: {}", err);
}
}
}
*current = pending.clone();
// new config
@ -834,11 +857,11 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurface<A> {
self.0.pending_connectors()
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.0.current_mode()
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.0.pending_mode()
}
@ -854,7 +877,7 @@ impl<A: AsRawFd + 'static> Surface for AtomicDrmSurface<A> {
self.0.set_connectors(connectors)
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Error> {
self.0.use_mode(mode)
}
}

12
src/backend/drm/common/fallback.rs
View File

@ -244,10 +244,10 @@ where
}
}
fallback_device_impl!(clear_handler, &mut Self);
fn create_surface(&mut self, crtc: crtc::Handle) -> Result<Self::Surface, E> {
fn create_surface(&mut self, crtc: crtc::Handle, mode: Mode, connectors: &[connector::Handle]) -> Result<Self::Surface, E> {
match self {
FallbackDevice::Preference(dev) => Ok(FallbackSurface::Preference(dev.create_surface(crtc)?)),
FallbackDevice::Fallback(dev) => Ok(FallbackSurface::Fallback(dev.create_surface(crtc)?)),
FallbackDevice::Preference(dev) => Ok(FallbackSurface::Preference(dev.create_surface(crtc, mode, connectors)?)),
FallbackDevice::Fallback(dev) => Ok(FallbackSurface::Fallback(dev.create_surface(crtc, mode, connectors)?)),
}
}
fallback_device_impl!(process_events, &mut Self);
@ -297,9 +297,9 @@ where
fallback_surface_impl!(add_connector, &Self, Result<(), E>, conn: connector::Handle);
fallback_surface_impl!(remove_connector, &Self, Result<(), E>, conn: connector::Handle);
fallback_surface_impl!(set_connectors, &Self, Result<(), E>, conns: &[connector::Handle]);
fallback_surface_impl!(current_mode, &Self, Option<Mode>);
fallback_surface_impl!(pending_mode, &Self, Option<Mode>);
fallback_surface_impl!(use_mode, &Self, Result<(), E>, mode: Option<Mode>);
fallback_surface_impl!(current_mode, &Self, Mode);
fallback_surface_impl!(pending_mode, &Self, Mode);
fallback_surface_impl!(use_mode, &Self, Result<(), E>, mode: Mode);
}
impl<E, C, S1, S2> RawSurface for FallbackSurface<S1, S2>

3
src/backend/drm/common/mod.rs
View File

@ -40,6 +40,9 @@ pub enum Error {
/// The given crtc is already in use by another backend
#[error("Crtc `{0:?}` is already in use by another backend")]
CrtcAlreadyInUse(crtc::Handle),
/// This operation would result in a surface without connectors.
#[error("Surface of crtc `{0:?}` would have no connectors, which is not accepted")]
SurfaceWithoutConnectors(crtc::Handle),
/// No encoder was found for a given connector on the set crtc
#[error("No encoder found for the given connector '{connector:?}' on crtc `{crtc:?}`")]
NoSuitableEncoder {

24
src/backend/drm/egl/mod.rs
View File

@ -8,7 +8,7 @@
//! Take a look at `anvil`s source code for an example of this.
//!
use drm::control::{connector, crtc, encoder, framebuffer, plane, ResourceHandles};
use drm::control::{connector, crtc, encoder, framebuffer, plane, Mode, ResourceHandles};
use drm::SystemError as DrmError;
use nix::libc::dev_t;
use std::os::unix::io::{AsRawFd, RawFd};
@ -40,11 +40,13 @@ pub enum Error<U: std::error::Error + std::fmt::Debug + std::fmt::Display + 'sta
Underlying(#[source] U),
}
type Arguments = (crtc::Handle, Mode, Vec<connector::Handle>);
/// Representation of an egl device to create egl rendering surfaces
pub struct EglDevice<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
dev: EGLDisplay<B, D>,
@ -56,7 +58,7 @@ where
impl<B, D> AsRawFd for EglDevice<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
fn as_raw_fd(&self) -> RawFd {
@ -67,7 +69,7 @@ where
impl<B, D> EglDevice<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
/// Try to create a new [`EglDevice`] from an open device.
@ -122,7 +124,7 @@ where
struct InternalDeviceHandler<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
handler: Box<dyn DeviceHandler<Device = EglDevice<B, D>> + 'static>,
@ -131,7 +133,7 @@ where
impl<B, D> DeviceHandler for InternalDeviceHandler<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
type Device = D;
@ -147,7 +149,7 @@ where
impl<B, D> Device for EglDevice<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
type Surface = EglSurface<<D as Device>::Surface>;
@ -169,6 +171,8 @@ where
fn create_surface(
&mut self,
crtc: crtc::Handle,
mode: Mode,
connectors: &[connector::Handle],
) -> Result<Self::Surface, <Self::Surface as Surface>::Error> {
info!(self.logger, "Initializing EglSurface");
@ -182,7 +186,7 @@ where
context.get_pixel_format(),
self.default_requirements.double_buffer,
context.get_config_id(),
crtc,
(crtc, mode, Vec::from(connectors)),
)
.map_err(Error::EGL)?;
@ -221,7 +225,7 @@ where
impl<B, D> EGLGraphicsBackend for EglDevice<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
fn bind_wl_display(&self, display: &Display) -> Result<EGLBufferReader, EGLError> {
@ -232,7 +236,7 @@ where
impl<B, D> Drop for EglDevice<B, D>
where
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + 'static,
D: Device + NativeDisplay<B, Arguments = Arguments> + 'static,
<D as Device>::Surface: NativeSurface,
{
fn drop(&mut self) {

4
src/backend/drm/egl/session.rs
View File

@ -3,7 +3,7 @@
//! to an open [`Session`](::backend::session::Session).
//!
use drm::control::crtc;
use drm::control::{crtc, connector, Mode};
use std::os::unix::io::RawFd;
use super::EglDevice;
@ -22,7 +22,7 @@ impl<S, B, D> AsSessionObserver<EglDeviceObserver<S>> for EglDevice<B, D>
where
S: SessionObserver + 'static,
B: Backend<Surface = <D as Device>::Surface> + 'static,
D: Device + NativeDisplay<B, Arguments = crtc::Handle> + AsSessionObserver<S> + 'static,
D: Device + NativeDisplay<B, Arguments = (crtc::Handle, Mode, Vec<connector::Handle>)> + AsSessionObserver<S> + 'static,
<D as Device>::Surface: NativeSurface,
{
fn observer(&mut self) -> EglDeviceObserver<S> {

8
src/backend/drm/egl/surface.rs
View File

@ -53,15 +53,15 @@ where
self.surface.set_connectors(connectors).map_err(Error::Underlying)
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.surface.current_mode()
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.surface.pending_mode()
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Self::Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Self::Error> {
self.surface.use_mode(mode).map_err(Error::Underlying)
}
}
@ -100,7 +100,7 @@ where
}
fn get_framebuffer_dimensions(&self) -> (u32, u32) {
let (w, h) = self.pending_mode().map(|mode| mode.size()).unwrap_or((1, 1));
let (w, h) = self.pending_mode().size();
(w as u32, h as u32)
}

8
src/backend/drm/gbm/egl.rs
View File

@ -12,7 +12,7 @@ use crate::backend::graphics::SwapBuffersError;
use super::{Error, GbmDevice, GbmSurface};
use drm::control::{crtc, Device as ControlDevice};
use drm::control::{crtc, connector, Device as ControlDevice, Mode};
use gbm::AsRaw;
use std::marker::PhantomData;
use std::ptr;
@ -52,7 +52,7 @@ impl<D: RawDevice + 'static> Backend for Gbm<D> {
}
unsafe impl<D: RawDevice + ControlDevice + 'static> NativeDisplay<Gbm<D>> for GbmDevice<D> {
type Arguments = crtc::Handle;
type Arguments = (crtc::Handle, Mode, Vec<connector::Handle>);
type Error = Error<<<D as Device>::Surface as Surface>::Error>;
fn is_backend(&self) -> bool {
@ -63,8 +63,8 @@ unsafe impl<D: RawDevice + ControlDevice + 'static> NativeDisplay<Gbm<D>> for Gb
Ok(self.dev.borrow().as_raw() as *const _)
}
fn create_surface(&mut self, crtc: crtc::Handle) -> Result<GbmSurface<D>, Self::Error> {
Device::create_surface(self, crtc)
fn create_surface(&mut self, args: Self::Arguments) -> Result<GbmSurface<D>, Self::Error> {
Device::create_surface(self, args.0, args.1, &args.2)
}
}

12
src/backend/drm/gbm/mod.rs
View File

@ -11,7 +11,7 @@
use super::{Device, DeviceHandler, RawDevice, ResourceHandles, Surface};
use drm::control::{connector, crtc, encoder, framebuffer, plane, Device as ControlDevice};
use drm::control::{connector, crtc, encoder, framebuffer, plane, Device as ControlDevice, Mode};
use drm::SystemError as DrmError;
use gbm::{self, BufferObjectFlags, Format as GbmFormat};
use nix::libc::dev_t;
@ -33,9 +33,6 @@ pub enum Error<U: std::error::Error + std::fmt::Debug + std::fmt::Display + 'sta
/// Creation of GBM surface failed
#[error("Creation of GBM surface failed")]
SurfaceCreationFailed(#[source] io::Error),
/// No mode is set, blocking the current operation
#[error("No mode is currently set")]
NoModeSet,
/// Creation of GBM buffer object failed
#[error("Creation of GBM buffer object failed")]
BufferCreationFailed(#[source] io::Error),
@ -159,17 +156,18 @@ impl<D: RawDevice + ControlDevice + 'static> Device for GbmDevice<D> {
fn create_surface(
&mut self,
crtc: crtc::Handle,
mode: Mode,
connectors: &[connector::Handle],
) -> Result<GbmSurface<D>, Error<<<D as Device>::Surface as Surface>::Error>> {
info!(self.logger, "Initializing GbmSurface");
let drm_surface =
Device::create_surface(&mut **self.dev.borrow_mut(), crtc).map_err(Error::Underlying)?;
Device::create_surface(&mut **self.dev.borrow_mut(), crtc, mode, connectors).map_err(Error::Underlying)?;
// initialize the surface
let (w, h) = drm_surface
.pending_mode()
.map(|mode| mode.size())
.unwrap_or((1, 1));
.size();
let surface = self
.dev
.borrow()

14
src/backend/drm/gbm/surface.rs
View File

@ -93,8 +93,6 @@ impl<D: RawDevice + 'static> GbmSurfaceInternal<D> {
pub fn recreate(&self) -> Result<(), Error<<<D as Device>::Surface as Surface>::Error>> {
let (w, h) = self
.pending_mode()
.or_else(|| self.current_mode())
.ok_or(Error::NoModeSet)?
.size();
// Recreate the surface and the related resources to match the new
@ -167,15 +165,15 @@ impl<D: RawDevice + 'static> Surface for GbmSurfaceInternal<D> {
self.crtc.set_connectors(connectors).map_err(Error::Underlying)
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.crtc.current_mode()
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.crtc.pending_mode()
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Self::Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Self::Error> {
self.crtc.use_mode(mode).map_err(Error::Underlying)
}
}
@ -325,15 +323,15 @@ impl<D: RawDevice + 'static> Surface for GbmSurface<D> {
self.0.set_connectors(connectors)
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.0.current_mode()
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.0.pending_mode()
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Self::Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Self::Error> {
self.0.use_mode(mode)
}
}

16
src/backend/drm/legacy/mod.rs
View File

@ -11,24 +11,24 @@
use super::{common::Error, DevPath, Device, DeviceHandler, RawDevice};
use drm::control::{
connector, crtc, encoder, framebuffer, plane, Device as ControlDevice, Event, ResourceHandles,
connector, crtc, encoder, framebuffer, plane, Device as ControlDevice, Event, Mode, ResourceHandles,
};
use drm::{Device as BasicDevice, SystemError as DrmError};
use nix::libc::dev_t;
use nix::sys::stat::fstat;
use std::cell::RefCell;
use std::collections::{HashMap, HashSet};
use std::collections::HashMap;
use std::os::unix::io::{AsRawFd, RawFd};
use std::rc::{Rc, Weak};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::{Arc, RwLock};
use std::sync::Arc;
use failure::{Fail, ResultExt};
mod surface;
pub use self::surface::LegacyDrmSurface;
use self::surface::{LegacyDrmSurfaceInternal, State};
use self::surface::LegacyDrmSurfaceInternal;
#[cfg(feature = "backend_session")]
pub mod session;
@ -241,7 +241,7 @@ impl<A: AsRawFd + 'static> Device for LegacyDrmDevice<A> {
let _ = self.handler.take();
}
fn create_surface(&mut self, crtc: crtc::Handle) -> Result<LegacyDrmSurface<A>, Error> {
fn create_surface(&mut self, crtc: crtc::Handle, mode: Mode, connectors: &[connector::Handle]) -> Result<LegacyDrmSurface<A>, Error> {
if self.backends.borrow().contains_key(&crtc) {
return Err(Error::CrtcAlreadyInUse(crtc));
}
@ -250,8 +250,12 @@ impl<A: AsRawFd + 'static> Device for LegacyDrmDevice<A> {
return Err(Error::DeviceInactive);
}
if connectors.is_empty() {
return Err(Error::SurfaceWithoutConnectors(crtc));
}
let backend = Rc::new(LegacyDrmSurfaceInternal::new(
self.dev.clone(), crtc,
self.dev.clone(), crtc, mode, connectors,
self.logger.new(o!("crtc" => format!("{:?}", crtc))),
)?);

42
src/backend/drm/legacy/surface.rs
View File

@ -5,6 +5,7 @@ use drm::control::{
};
use drm::Device as BasicDevice;
use std::cell::Cell;
use std::collections::HashSet;
use std::os::unix::io::{AsRawFd, RawFd};
use std::rc::Rc;
@ -20,7 +21,7 @@ use failure::{Fail, ResultExt};
#[derive(Debug, PartialEq, Eq, Clone)]
pub struct State {
pub mode: Option<Mode>,
pub mode: Mode,
pub connectors: HashSet<connector::Handle>,
}
@ -30,6 +31,7 @@ pub(super) struct LegacyDrmSurfaceInternal<A: AsRawFd + 'static> {
pub(super) state: RwLock<State>,
pub(super) pending: RwLock<State>,
pub(super) logger: ::slog::Logger,
init_buffer: Cell<Option<(DumbBuffer, framebuffer::Handle)>>,
}
impl<A: AsRawFd + 'static> AsRawFd for LegacyDrmSurfaceInternal<A> {
@ -96,18 +98,18 @@ impl<A: AsRawFd + 'static> Surface for LegacyDrmSurfaceInternal<A> {
self.pending.read().unwrap().connectors.clone()
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.state.read().unwrap().mode
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.pending.read().unwrap().mode
}
fn add_connector(&self, conn: connector::Handle) -> Result<(), Error> {
let mut pending = self.pending.write().unwrap();
if self.check_connector(conn, pending.mode.as_ref().unwrap())? {
if self.check_connector(conn, &pending.mode)? {
pending.connectors.insert(conn);
}
@ -124,7 +126,7 @@ impl<A: AsRawFd + 'static> Surface for LegacyDrmSurfaceInternal<A> {
if connectors
.iter()
.map(|conn| self.check_connector(*conn, pending.mode.as_ref().unwrap()))
.map(|conn| self.check_connector(*conn, &pending.mode))
.collect::<Result<Vec<bool>, _>>()?
.iter()
.all(|v| *v)
@ -135,11 +137,10 @@ impl<A: AsRawFd + 'static> Surface for LegacyDrmSurfaceInternal<A> {
Ok(())
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Error> {
let mut pending = self.pending.write().unwrap();
// check the connectors to see if this mode is supported
if let Some(mode) = mode {
for connector in &pending.connectors {
if !self
.get_connector(*connector)
@ -155,7 +156,6 @@ impl<A: AsRawFd + 'static> Surface for LegacyDrmSurfaceInternal<A> {
return Err(Error::ModeNotSuitable(mode));
}
}
}
pending.mode = mode;
@ -211,7 +211,7 @@ impl<A: AsRawFd + 'static> RawSurface for LegacyDrmSurfaceInternal<A> {
info!(
self.logger,
"Setting new mode: {:?}",
pending.mode.as_ref().unwrap().name()
pending.mode.name()
);
}
}
@ -226,7 +226,7 @@ impl<A: AsRawFd + 'static> RawSurface for LegacyDrmSurfaceInternal<A> {
.iter()
.copied()
.collect::<Vec<connector::Handle>>(),
pending.mode,
Some(pending.mode),
)
.compat()
.map_err(|source| Error::Access {
@ -266,7 +266,7 @@ impl<A: AsRawFd + 'static> RawSurface for LegacyDrmSurfaceInternal<A> {
}
impl<A: AsRawFd + 'static> LegacyDrmSurfaceInternal<A> {
pub(crate) fn new(dev: Rc<Dev<A>>, crtc: crtc::Handle, logger: ::slog::Logger) -> Result<LegacyDrmSurfaceInternal<A>, Error> {
pub(crate) fn new(dev: Rc<Dev<A>>, crtc: crtc::Handle, mode: Mode, connectors: &[connector::Handle], logger: ::slog::Logger) -> Result<LegacyDrmSurfaceInternal<A>, Error> {
// Try to enumarate the current state to set the initial state variable correctly
let crtc_info = dev.get_crtc(crtc).compat().map_err(|source| Error::Access {
errmsg: "Error loading crtc info",
@ -304,14 +304,20 @@ impl<A: AsRawFd + 'static> LegacyDrmSurfaceInternal<A> {
}
}
let state = State { current_mode, current_connectors };
// If we have no current mode, we create a fake one, which will not match (and thus gets overriden on the commit below).
// A better fix would probably be making mode an `Option`, but that would mean
// we need to be sure, we require a mode to always be set without relying on the compiler.
// So we cheat, because it works and is easier to handle later.
let state = State { mode: current_mode.unwrap_or_else(|| unsafe { std::mem::zeroed() }), connectors: current_connectors };
let pending = State { mode, connectors: connectors.into_iter().copied().collect() };
let surface = LegacyDrmSurfaceInternal {
dev,
crtc,
state: RwLock::new(state),
pending: RwLock::new(state.clone()),
pending: RwLock::new(pending),
logger,
init_buffer: Cell::new(None),
};
Ok(surface)
@ -371,6 +377,10 @@ impl<A: AsRawFd + 'static> Drop for LegacyDrmSurfaceInternal<A> {
fn drop(&mut self) {
// ignore failure at this point
let _ = self.set_cursor(self.crtc, Option::<&DumbBuffer>::None);
if let Some((db, fb)) = self.init_buffer.take() {
let _ = self.destroy_framebuffer(fb);
let _ = self.destroy_dumb_buffer(db);
}
}
}
@ -419,11 +429,11 @@ impl<A: AsRawFd + 'static> Surface for LegacyDrmSurface<A> {
self.0.pending_connectors()
}
fn current_mode(&self) -> Option<Mode> {
fn current_mode(&self) -> Mode {
self.0.current_mode()
}
fn pending_mode(&self) -> Option<Mode> {
fn pending_mode(&self) -> Mode {
self.0.pending_mode()
}
@ -439,7 +449,7 @@ impl<A: AsRawFd + 'static> Surface for LegacyDrmSurface<A> {
self.0.set_connectors(connectors)
}
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Error> {
fn use_mode(&self, mode: Mode) -> Result<(), Error> {
self.0.use_mode(mode)
}
}

22
src/backend/drm/mod.rs
View File

@ -94,16 +94,23 @@ pub trait Device: AsRawFd + DevPath {
/// Creates a new rendering surface.
///
/// # Arguments
///
/// Initialization of surfaces happens through the types provided by
/// [`drm-rs`](drm).
///
/// [`crtc`](drm::control::crtc)s represent scanout engines
/// of the device pointer to one framebuffer.
/// Their responsibility is to read the data of the framebuffer and export it into an "Encoder".
/// - [`crtc`](drm::control::crtc)s represent scanout engines of the device pointing to one framebuffer. \
/// Their responsibility is to read the data of the framebuffer and export it into an "Encoder". \
/// The number of crtc's represent the number of independant output devices the hardware may handle.
/// - [`mode`](drm::control::Mode) describes the resolution and rate of images produced by the crtc and \
/// has to be compatible with the provided `connectors`.
/// - [`connectors`] - List of connectors driven by the crtc. At least one(!) connector needs to be \
/// attached to a crtc in smithay.
fn create_surface(
&mut self,
crtc: crtc::Handle,
mode: Mode,
connectors: &[connector::Handle]
) -> Result<Self::Surface, <Self::Surface as Surface>::Error>;
/// Processes any open events of the underlying file descriptor.
@ -181,11 +188,10 @@ pub trait Surface {
fn set_connectors(&self, connectors: &[connector::Handle]) -> Result<(), Self::Error>;
/// Returns the currently active [`Mode`](drm::control::Mode)
/// of the underlying [`crtc`](drm::control::crtc)
/// if any.
fn current_mode(&self) -> Option<Mode>;
fn current_mode(&self) -> Mode;
/// Returns the currently pending [`Mode`](drm::control::Mode)
/// to be used after the next commit, if any.
fn pending_mode(&self) -> Option<Mode>;
/// to be used after the next commit.
fn pending_mode(&self) -> Mode;
/// Tries to set a new [`Mode`](drm::control::Mode)
/// to be used after the next commit.
///
@ -196,7 +202,7 @@ pub trait Surface {
/// *Note*: Only on a [`RawSurface`] you may directly trigger
/// a [`commit`](RawSurface::commit). Other [`Surface`]s provide their
/// own methods that *may* trigger a commit, you will need to read their docs.
fn use_mode(&self, mode: Option<Mode>) -> Result<(), Self::Error>;
fn use_mode(&self, mode: Mode) -> Result<(), Self::Error>;
}
/// An open bare crtc without any rendering abstractions