Commit Graph

454 Commits

Author SHA1 Message Date
Simon Zeni 94ed8f9496 backend/drm: introduce wlr_drm_backend_get_non_master_fd 2021-09-08 11:09:07 +02:00
Simon Zeni e5a949a955 backend/drm: implement drm lease function 2021-09-08 11:09:07 +02:00
Simon Ser 42dba9dc90 backend/drm: drop wlr_drm_connector.desired_mode
Previously used by attempt_enable_needs_modeset, but this has been
dropped in the previous commit.
2021-09-07 22:33:40 +02:00
Simon Ser b01d97a38f backend/drm: drop attempt_enable_needs_modeset
Modesets require a buffer. The DRM backend tried to auto-enable
outputs when a CRTC becomes available in the past, but now that
fails because no buffer is available.

Instead of having this magic inside the DRM backend, a better
approach is to do it in the compositor or in an optional helper.
2021-09-07 22:33:40 +02:00
Simon Ser 0c8fba1a2f backend/drm: drop drm_connector_init_renderer
drm_connector_set_pending_fb already takes care of this.
2021-09-07 15:16:30 +02:00
Simon Ser de1c73021c backend/drm: drop unused arg from get_possible_crtcs
Constify drmModeConnector while at it.
2021-09-07 08:45:08 -04:00
Simon Ser 3c74bd0c91 backend/drm: introduce wlr_drm_connector_state
Previously, we were copying wlr_output_state on the stack and
patching it up to be guaranteed to have a proper drmModeModeInfo
stored in it (and not a custom mode). Also, we had a bunch of
helpers deriving DRM-specific information from the generic
wlr_output_state.

Copying the wlr_output_state worked fine so far, but with output
layers we'll be getting a wl_list in there. An empty wl_list stores
two pointers to itself, copying it on the stack blindly results in
infinite loops in wl_list_for_each.

To fix this, rework our DRM backend to stop copying wlr_output_state,
instead add a new struct wlr_drm_connector_state which holds both
the wlr_output_state and additional DRM-specific information.
2021-09-07 11:18:18 +02:00
Simon Ser 3fbf6e02a3 backend/drm: rename enum wlr_drm_connector_state to status
"state" is easily confused with wlr_output_state.
2021-09-07 11:18:18 +02:00
Simon Ser 5aa5137fae backend/drm: handle drm_surface_blit errors
drm_surface_blit returns NULL on error. This can happen e.g. when
the source buffer cannot be imported into EGL.

Closes: https://github.com/swaywm/wlroots/issues/3154
2021-09-03 17:57:38 +02:00
Simon Ser 5dfaf5ea9c backend/drm: introduce wlr_drm_bo_handle_table
Using GBM to import DRM dumb buffers tends to not work well. By
using GBM we're calling some driver-specific functions in Mesa.
These functions check whether Mesa can work with the buffer.
Sometimes Mesa has requirements which differ from DRM dumb buffers
and the GBM import will fail (e.g. on amdgpu).

Instead, drop GBM and use drmPrimeFDToHandle directly. But there's
a twist: BO handles are not ref'counted by the kernel and need to
be ref'counted in user-space [1]. libdrm usually performs this
bookkeeping and is used under-the-hood by Mesa.

We can't re-use libdrm for this task without using driver-specific
APIs. So let's just re-implement the ref'counting logic in wlroots.
The wlroots implementation is inspired from amdgpu's in libdrm [2].

Closes: https://github.com/swaywm/wlroots/issues/2916

[1]: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/110
[2]: 1a4c0ec9ae/amdgpu/handle_table.c
2021-08-25 10:05:37 -04:00
Simon Ser 65c0ab00b6 backend/drm: generate CVT reduced modes
The Coordinated Video Timings (CVT) spec [1] defines two types of
timings: the "CVT standard CRT" timings and the "CVT reduced blanking"
timings (see section 3.6).

The standard CRT timings include pauses in the video stream to allow
CRT displays to reposition their electron beam at the end of each
horizontal scan line [2]. While this was desirable a few decades ago,
nowadays we can just generate a CVT reduced blanking timing by default.
wlroots users can still set full custom DRM modes via
wlr_drm_connector_add_mode.

[1]: https://glenwing.github.io/docs/VESA-CVT-1.2.pdf
[2]: https://en.wikipedia.org/wiki/Coordinated_Video_Timings#Reduced_blanking
2021-08-25 08:37:35 +02:00
Rouven Czerwinski 9b7803a9b3 backend/drm: try to allocate crtc for formats
To retrieve the formats, an allocated crtc is required. If there is no
currently no crtc available, try to allocate it. This reproducable by
having a disabled output and going through a suspend cycle with amdgpu.
On start CRTCs look like this:

  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1099] Reallocating CRTCs
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1110] State before reallocation:
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'DP-1' crtc=0 state=1 desired_enabled=1
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'DP-2' crtc=1 state=1 desired_enabled=1
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'DVI-D-1' crtc=-1 state=0 desired_enabled=0
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1167] State after reallocation:
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'DP-1' crtc=0 state=1 desired_enabled=1
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'DP-2' crtc=1 state=1 desired_enabled=1
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
  00:00:00.588 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'DVI-D-1' crtc=-1 state=0 desired_enabled=0

where DP-1 is than disabled. After suspend/resume, allocation turns into:

  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1099] Reallocating CRTCs
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1110] State before reallocation:
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'DP-1' crtc=-1 state=1 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'DP-2' crtc=1 state=3 desired_enabled=1
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1116]   'DVI-D-1' crtc=-1 state=0 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1167] State after reallocation:
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'DP-1' crtc=-1 state=1 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'DP-2' crtc=1 state=3 desired_enabled=1
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'HDMI-A-1' crtc=-1 state=0 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'HDMI-A-2' crtc=-1 state=0 desired_enabled=0
  00:30:22.680 [DEBUG] [wlr] [backend/drm/drm.c:1174]   'DVI-D-1' crtc=-1 state=0 desired_enabled=0

where the crtc for DP-1 is now NULL. Trying to enable the output results
in:

  10:43:36.906 [DEBUG] [sway/config/output.c:351] Turning on output DP-1
  10:43:36.906 [DEBUG] [sway/config/output.c:360] Set preferred mode
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [sway/config/output.c:366] Preferred mode rejected, falling back to another mode
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.906 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.906 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.906 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [DEBUG] [sway/config/output.c:400] Auto-detected output scale: 1.000000
  10:43:36.907 [DEBUG] [sway/config/output.c:430] Committing output DP-1
  10:43:36.907 [DEBUG] [wlr] [backend/drm/drm.c:464] connector DP-1: Can't enable an output without a buffer
  10:43:36.907 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
  10:43:36.907 [ERROR] [wlr] [types/wlr_output.c:512] Failed to get primary display formats
  10:43:36.907 [ERROR] [sway/config/output.c:435] Failed to commit output DP-1

where the primary format can't be queried since there is no crtc
allocated for the connector. Allocating the connector inside
drm_connector_get_primary_formats() fixes this issue. This is possible
since the only user of get_primary_formats() is the swapchain allocation
function, which is only called on output enable. Do the same thing for
the cursor formats in case the user queries them before the output is
enabled.
2021-08-20 10:24:30 +02:00
Rouven Czerwinski cdd9a60f72 Revert "backend/drm: Check if output is enabled before sending frame event"
This reverts commit 85757665e6.

We now check if the output is enabled within wlr_output_send_frame, no
need to handle this explicitly in the DRM backend. This also fixes a
race which was introduced with this commit: if we schedule the flip,
disable and commit the output before the flip happens,
output.frame_pending will not be reset to false. We than always fail to
enable the output subsequently:

      00:07:13.276 [INFO] [sway/commands.c:257] Handling command 'output DP-2 enable'
      00:07:13.276 [DEBUG] [sway/commands.c:428] Subcommand: enable
      00:07:13.276 [DEBUG] [sway/config/output.c:204] Merging on top of existing output config
      00:07:13.276 [DEBUG] [sway/config/output.c:227] Config stored for output DP-2 (enabled: 1) (-1x-1@-1.000000Hz position 0,0 scale -1.000000 subpixel unknown transform -1) (bg /home/phoenix/Pictures/Wallpapers/mine/oper.jpg fill) (dpms 1) (max render time: -1)
      00:07:13.276 [DEBUG] [sway/config/output.c:351] Turning on output DP-2
      00:07:13.276 [DEBUG] [sway/config/output.c:360] Set preferred mode
      00:07:13.276 [DEBUG] [wlr] [backend/drm/drm.c:465] connector DP-2: Can't enable an output without a buffer
      00:07:13.276 [DEBUG] [wlr] [types/wlr_output.c:689] Attaching empty buffer to output for modeset
      00:07:13.277 [DEBUG] [sway/config/output.c:329] Output DPI: 162.560000x161.364706
      00:07:13.277 [DEBUG] [sway/config/output.c:400] Auto-detected output scale: 1.000000
      00:07:13.277 [DEBUG] [sway/config/output.c:430] Committing output DP-2
      00:07:13.277 [DEBUG] [wlr] [types/wlr_output.c:729] Tried to commit a buffer while a frame is pending

since the basic_output_test will always fail.
Reset frame_pending to false even if the output has been disabled in the
meantime.

Fixes https://github.com/swaywm/wlroots/issues/3109
2021-08-17 21:07:43 +02:00
Rouven Czerwinski 59b292b691 backend/drm: return true on test if no crtc
This should fix the following backtrace, seen on my desktop with one
output disabled:

  #0  atomic_crtc_commit (conn=0x270f5c0, state=0x270f6d0, flags=0, test_only=<optimized out>) at ../backend/drm/atomic.c:178
          drm = 0x1ae9c10
          output = 0x270f5c0
          crtc = 0x0
          modeset = false
          active = false
          mode_id = 43989232
          gamma_lut = 0
          prev_vrr_enabled = <optimized out>
          vrr_enabled = <optimized out>
          atom = {req = 0x270f5c0, failed = 48}
          ok = <optimized out>
  #1  0x00007f1104f33128 in drm_crtc_commit (conn=conn@entry=0x270f5c0, state=state@entry=0x270f6d0, flags=flags@entry=0, test_only=test_only@entry=true) at ../backend/drm/drm.c:339
          __PRETTY_FUNCTION__ = "drm_crtc_commit"
          drm = <optimized out>
          crtc = 0x0
          ok = <optimized out>
  #2  0x00007f1104f34e6c in drm_connector_test (output=output@entry=0x270f5c0) at ../backend/drm/drm.c:488
          conn = 0x270f5c0
          unsupported = <optimized out>
  #3  0x00007f1104f35424 in drm_connector_commit (output=0x270f5c0) at ../backend/drm/drm.c:578
          conn = 0x270f5c0
  #4  0x00007f1104f600b7 in wlr_output_commit (output=output@entry=0x270f5c0) at ../types/wlr_output.c:837
          now = {tv_sec = 7732, tv_nsec = 623813006}
          pre_event = {output = 0x270f5c0, when = 0x7ffecc1be570}
          back_buffer = 0x0
          scale_updated = <optimized out>
          geometry_updated = <optimized out>
          committed = <optimized out>
          event = {output = 0x0, committed = 4401048, when = 0x29f38f0}
  #5  0x0000000000433047 in apply_output_config (oc=oc@entry=0x29f38f0, output=output@entry=0x2710720) at ../sway/config/output.c:431
          wlr_output = 0x270f5c0
          output_box = <optimized out>
  #6  0x0000000000433aaf in apply_output_config_to_outputs (oc=0x2308400) at ../sway/config/output.c:649
          current = 0x29f38f0
          name = <optimized out>
          wildcard = true
          id = "Dell Inc. DELL U2410 F525M9AK0MML\000\060\060\060ACD7\000\000\000\000\000\000\000\220\063\240\002\000\000\000\000L5C\000\000\000\000\000\377\377\377\377\000\000\000\000\377\377\377\377\000\000\000\000\377\377\377\377\000\000\000\000\377\377\377\377\000\000\000\000\355\240E\000\000\000\000\000\377\377\377\377\000\000\000\000@\206+\002\000\000\000\000`\260.\002\000\000\000"
          sway_output = 0x2710720
          tmp = 0x2242030
          seat = <optimized out>
  #7  0x000000000043df6b in cmd_output (argc=<optimized out>, argv=0x2a03390) at ../sway/commands/output.c:108
          error = <optimized out>
          output = <optimized out>
          background = false
  #8  0x0000000000410304 in execute_command (_exec=_exec@entry=0x2975d20 "output * dpms off", seat=0x22a3280, seat@entry=0x0, con=con@entry=0x0) at ../sway/commands.c:291
          res = <optimized out>
          argc = 4
          argv = 0x2a03370
          handler = 0x479230 <handlers+560>
          cmd = <optimized out>
          matched_delim = 0 '\000'
          containers = 0x0
          using_criteria = false
          __PRETTY_FUNCTION__ = "execute_command"
          exec = 0x28f63c0 "output * dpms off"
          head = 0x0
          res_list = 0x2a2e9d0
  #9  0x0000000000418b65 in ipc_client_handle_command (client=client@entry=0x2a6ac80, payload_length=<optimized out>, payload_type=IPC_COMMAND) at ../sway/ipc-server.c:645
          line = <optimized out>
          res_list = <optimized out>
          json = <optimized out>
          length = <optimized out>
          __PRETTY_FUNCTION__ = "ipc_client_handle_command"
          buf = 0x2975d20 "output * dpms off"
  #10 0x000000000041964c in ipc_client_handle_readable (client_fd=<optimized out>, mask=<optimized out>, data=0x2a6ac80) at ../sway/ipc-server.c:267
          pending_length = <optimized out>
          pending_type = <optimized out>
          client = 0x2a6ac80
          read_available = 31
          buf = "i3-ipc\021\000\000\000\000\000\000"
          received = 14
  #11 0x00007f1104fc3492 in wl_event_loop_dispatch () from /nix/store/ridk7k2ka6dbk4ly7qqjgmc523s4fj89-wayland-1.19.0/lib/libwayland-server.so.0
  No symbol table info available.
  #12 0x00007f1104fc1135 in wl_display_run () from /nix/store/ridk7k2ka6dbk4ly7qqjgmc523s4fj89-wayland-1.19.0/lib/libwayland-server.so.0
  No symbol table info available.
  #13 0x000000000041ac10 in server_run (server=server@entry=0x47b0c0 <server>) at ../sway/server.c:261
  No locals.
  #14 0x000000000041a3fc in main (argc=<optimized out>, argv=0x7ffecc1bec68) at ../sway/main.c:395
          verbose = 0
          debug = 0
          validate = 0
          allow_unsupported_gpu = 0
          long_options = {{name = 0x45b516 "help", has_arg = 0, flag = 0x0, val = 104}, {name = 0x45ee69 "config", has_arg = 1, flag = 0x0, val = 99}, {name = 0x45b51b "validate", has_arg = 0, flag = 0x0, val = 67}, {
              name = 0x45b524 "debug", has_arg = 0, flag = 0x0, val = 100}, {name = 0x45b3ac "version", has_arg = 0, flag = 0x0, val = 118}, {name = 0x45a55c "verbose", has_arg = 0, flag = 0x0, val = 86}, {name = 0x45b52a "get-socketpath",
              has_arg = 0, flag = 0x0, val = 112}, {name = 0x45b539 "unsupported-gpu", has_arg = 0, flag = 0x0, val = 117}, {name = 0x45b549 "my-next-gpu-wont-be-nvidia", has_arg = 0, flag = 0x0, val = 117}, {name = 0x0, has_arg = 0,
              flag = 0x0, val = 0}}
          config_path = 0x0
          usage = 0x45b830 "Usage: sway [options] [command]\n\n  -h, --help", ' ' <repeats 13 times>, "Show help message and quit.\n  -c, --config <config>  Specify a config file.\n  -C, --validate         Check the validity of the config file, th"...
          c = <optimized out>

where the second output is not enabled:

  (gdb) frame 4
  #4  0x00007f1104f600b7 in wlr_output_commit (output=output@entry=0x270f5c0) at ../types/wlr_output.c:837
  837	in ../types/wlr_output.c
  (gdb) p output->enabled
  $3 = false
  (gdb)

The culprit being that since 604674dc54 we
always try to perform a commit, even on a disabled output.
2021-08-17 14:07:51 +02:00
Simon Ser 604674dc54 backend/drm: always perform a test commit in drm_connector_test
This allows callers to use wlr_output_test to check whether a mode
can be enabled, for instance.

Closes: https://github.com/swaywm/wlroots/issues/2250
2021-08-10 16:38:22 +02:00
Simon Ser 1936e136df backend/drm: require buffer on modeset in drm_connector_test
When testing a modeset, make sure the caller has also provided a
buffer. This allows df0e75ba05 ("output: try skipping buffer
allocation if the backend allows it") to work as expected with the
DRM backend.

Closes: https://github.com/swaywm/wlroots/issues/3086
2021-08-04 22:51:40 +02:00
Simon Ser 923258b0be backend/drm: preserve mode order from kernel
The kernel orders the mode list from highest to lowest. Preserve
this ordering in the wlr_output.modes list.
2021-08-02 09:28:21 -04:00
Simon Ser 3132c0ab10 output: drop wlr_output_state.buffer_type
This is now unconditionally set to WLR_OUTPUT_STATE_BUFFER_SCANOUT.
2021-07-29 09:48:33 -04:00
Simon Ser 55ac7e335a backend/drm: fix wrong type for get_cursor_format return values
These are bools but should be pointers.
2021-07-28 16:59:21 -04:00
Simon Ser c55f70c8b7 backend/drm: stop initializing renderer for parent backend
Unless we're dealing with a multi-GPU setup and the backend being
initialized is secondary, we don't need a renderer nor an allocator.
Stop initializing these.
2021-07-28 22:52:35 +02:00
Simon Ser ebb661532c backend/drm: remove SCANOUT check in drm_connector_test
We only accept SCANOUT, the buffer type should never be set to RENDER.
2021-07-28 22:52:35 +02:00
Simon Ser f5900c1f00 backend/drm: remove primary swapchain
We can't nuke it completely, we still need it for multi-GPU.
2021-07-28 22:52:35 +02:00
Simon Ser d6f0fc251e backend/drm: implement get_primary_formats 2021-07-28 22:52:35 +02:00
Simon Ser cc8bc0db20 backend/drm: stop restoring CRTCs on exit
This is the cause of the spurious "drmHandleEvent failed" messages
at exit. restore_drm_outputs calls handle_drm_event in a loop without
checking whether the FD is readable, so drmHandleEvent ends up with a
short read (0 bytes) and returns an error.

The loop's goal is to wait for all queued page-flip events to complete,
to allow drmModeSetCrtc calls to succeed without EBUSY. The
drmModeSetCrtc calls are supposed to restore whatever KMS state we were
started with. But it's not clear from my PoV that restoring the KMS
state on exit is desirable.

KMS clients are supposed to save and restore the (full) KMS state on VT
switch, but not on exit. Leaving our KMS state on exit avoids unnecessary
modesets and allows flicker-free transitions between clients. See [1]
for more details, and note that with Pekka we've concluded that a new
flag to reset some KMS props to their default value on compositor
start-up is the best way forward. As a side note, Weston doesn't restore
the CRTC by does disable the cursor plane on exit (see
drm_output_deinit_planes, I still think disabling the cursor plane
shouldn't be necessary on exit).

Additionally, restore_drm_outputs only a subset of the KMS state.
Gamma and other atomic properties aren't accounted for. If the previous
KMS client had some outputs disabled, restore_drm_outputs would restore
a garbage mode.

[1]: https://blog.ffwll.ch/2016/01/vt-switching-with-atomic-modeset.html
2021-07-20 15:33:26 +02:00
Simon Ser 709190c4c8 backend/drm: remove wlr_output_impl.export_dmabuf
This is now provided by the generic wlr_output implementation.
2021-07-12 13:29:03 -04:00
Simon Ser f67cfb2ce2 backend/drm: remove backend arg from wlr_drm_interface.crtc_commit
The callee can just get it from the wlr_drm_connector.
2021-07-09 15:31:19 -04:00
Simon Ser fde56c20b4 backend/drm: move legacy-specific checks to legacy.c
Now that we have a test_only arg in crtc_commit, we can move the
legacy checks to legacy.c.
2021-07-09 15:31:19 -04:00
Simon Ser 017555651b backend/drm: add test_only arg to wlr_drm_interface.crtc_commit
Right now callers of drm_crtc_commit need to check whether the
interface is legacy or atomic before passing the TEST_ONLY flag.
Additionally, the fallbacks for legacy are in-place in the common
code.

Add a test_only arg to the crtc_commit hook. This way, there's no
risk to pass atomic-only flags to the legacy function (add an assert
to ensure this) and all of the legacy-specific logic can be put back
into legacy.c (done in next commit).
2021-07-09 15:31:19 -04:00
Simon Zeni e192d87731 move wlr_box from /types to /util 2021-07-06 21:43:17 +02:00
Simon Ser 4dee7a2f6f backend/drm: don't clear pending cursor FB on failed commit
The previous fix tried to side-step cursor->pending_fb completely.
However that messes up our buffer locking mechanism.

Instead, stop clearing the pending cursor FB on a failed commit. The
pending cursor FB will remain for the next commit.

Fixes: 6c3d080e25 ("backend/drm: populate cursor plane's current_fb")
2021-07-05 10:55:41 -04:00
Simon Ser 5f26360bd8 Revert "backend/drm: populate cursor plane's current_fb"
This reverts commit 6c3d080e25.

Populating wlr_drm_plane.current_fb messes up the buffer's locking.
The previous buffer is released while it's still being displayed
on-screen.
2021-07-05 10:55:41 -04:00
Simon Ser a38baec1f8 buffer: make enum wlr_buffer_cap public
Custom backends and renderers need to implement
wlr_backend_impl.get_buffer_caps and
wlr_renderer_impl.get_render_buffer_caps. They can't if enum
wlr_buffer_cap isn't made public.
2021-07-01 16:40:19 -04:00
Simon Ser 264d4e2bce backend/drm: rename page_flip_handler to handle_page_flip
This is more consistent with the rest of the wlroots naming.
2021-06-24 11:56:45 +02:00
Simon Ser 2f615468b6 backend: add output state allow-lists
Right now, when a new output state field is added, all backends by
default won't reject it. This means we need to add new checks to
each and every backend when we introduce a new state field.

Instead, introduce a bitmask of supported output state fields in
each backend, and error out if the user has submitted an unknown
field.

Some fields don't need any backend involvment to work. These are
listed in WLR_OUTPUT_STATE_BACKEND_OPTIONAL as a convenience.
2021-06-20 23:17:08 +02:00
Simon Ser 6c3d080e25 backend/drm: populate cursor plane's current_fb
The set_cursor() hook is a little bit special: it's not really
synchronized to commit() or test(). Once set_cursor() returns true,
the new cursor is part of the current state.

This fixes a state where wlr_drm_connector.cursor_enabled is true
but there is no FB available. This is triggered by set_cursor()
followed by a failed commit(), which resets pending_fb.

We should definitely fix the output interface to make the cursor part
of the pending state, but that's a more involved change.
2021-06-17 00:25:27 +02:00
Simon Ser 3345eaca89 backend/drm: remove test_buffer
Instead, call drm_connector_set_pending_fb.
2021-06-13 10:57:17 +02:00
Simon Ser eca5d2f37f backend/drm: move session check from test_buffer to drm_connector_test
The other caller (drm_connector_commit_state) already checks this.
2021-06-13 10:57:17 +02:00
Simon Ser 758f117442 backend/drm: move drm_connector_set_pending_fb up
This will be used in drm_connector_test shortly.
2021-06-13 10:57:17 +02:00
Simon Ser f55b43ddd6 backend/drm: allocate a CRTC in drm_connector_test
We can't perform a test-only atomic commit if the connector is
missing a CRTC.
2021-06-13 10:57:17 +02:00
Simon Ser cb378600e4 backend/drm: allocate a CRTC in drm_connector_commit_state
drm_connector_set_pending_fb needs a CRTC to import the buffer.
2021-06-13 10:57:17 +02:00
Simon Ser b180d3482f backend/drm: introduce drm_connector_alloc_crtc
This function allocates a CRTC for a connector if necessary.
2021-06-13 10:57:17 +02:00
Simon Ser 63f891e393 backend/drm: allow committing a buffer and a mode together
Set the plane's pending FB before calling drm_connector_set_mode.
2021-06-13 10:57:17 +02:00
Simon Ser e89cf5f047 backend/drm: use atomic test-only commits for modifier fallback
Instead of trying to perform a real modeset in init_renderer,
perform an atomic test-only commit to find out whether disabling
modifiers is necessary because of bandwidth limitations.

This decouples init_renderer from the actual commit, making it
possible to modeset an output with a user-supplied buffer instead
of a black frame.

We loose the ability to make sure the buffers coming from the
swapchain will work fine when using the legacy interface. This
can break i915 when atomic is disabled and modifiers enabled.
But i915 always has atomic (so the user must explicitly disable it
to run into potential bandwidth limitations) and is the only known
problematic driver.
2021-06-13 10:57:17 +02:00
Simon Ser b86a0c8d8f backend/drm: move cursor fields to wlr_drm_connector
Doesn't make a lot of sense to split the cursor fields between
wlr_drm_plane and wlr_drm_connector. Let's just move everything to
wlr_drm_connector.
2021-06-02 11:08:52 +02:00
Simon Ser 2b0a1aeed5 output: take a wlr_buffer in set_cursor
Instead of passing a wlr_texture to the backend, directly pass a
wlr_buffer. Use get_cursor_size and get_cursor_formats to create
a wlr_buffer that can be used as a cursor.

We don't want to pass a wlr_texture because we want to remove as
many rendering bits from the backend as possible.
2021-06-02 11:08:52 +02:00
Simon Ser e06ea4e84a backend/drm: remove format arg from drm_plane_init_surface
This was always set to ARGB8888.
2021-06-02 11:08:52 +02:00
Simon Ser 9e9be83a58 backend/drm: implement get_cursor_formats and get_cursor_size 2021-06-02 11:08:52 +02:00
Kenny Levinsen 2603a5dee7 backend/drm: Do not require mode commit on enable
If a mode is not provided, use the current mode intead.

Closes: https://github.com/swaywm/wlroots/issues/2904
2021-04-30 21:33:28 +02:00
Simon Ser a1e8a639b3 backend/drm: introduce drm_connector_commit_state
Backend-initiated mode changes can use this function instead of
going through drm_connector_set_mode. drm_connector_set_mode becomes
a mere drm_connector_commit_state helper.
2021-04-29 19:51:57 +02:00
Simon Ser e543e26206 backend/drm: take a wlr_drm_connector instead of a wlr_output
No need to take a generic wlr_output, we already know the output
comes from the DRM backend at that point.
2021-04-29 19:51:57 +02:00