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linux-next/include/drm
Keith Packard 2ed077e467 drm: Add drm_object lease infrastructure [v5]
This provides new data structures to hold "lease" information about
drm mode setting objects, and provides for creating new drm_masters
which have access to a subset of the available drm resources.

An 'owner' is a drm_master which is not leasing the objects from
another drm_master, and hence 'owns' them.

A 'lessee' is a drm_master which is leasing objects from some other
drm_master. Each lessee holds the set of objects which it is leasing
from the lessor.

A 'lessor' is a drm_master which is leasing objects to another
drm_master. This is the same as the owner in the current code.

The set of objects any drm_master 'controls' is limited to the set of
objects it leases (for lessees) or all objects (for owners).

Objects not controlled by a drm_master cannot be modified through the
various state manipulating ioctls, and any state reported back to user
space will be edited to make them appear idle and/or unusable. For
instance, connectors always report 'disconnected', while encoders
report no possible crtcs or clones.

The full list of lessees leasing objects from an owner (either
directly, or indirectly through another lessee), can be searched from
an idr in the drm_master of the owner.

Changes for v2 as suggested by Daniel Vetter <daniel.vetter@ffwll.ch>:

* Sub-leasing has been disabled.

* BUG_ON for lock checking replaced with lockdep_assert_held

* 'change' ioctl has been removed.

* Leased objects can always be controlled by the lessor; the
  'mask_lease' flag has been removed

* Checking for leased status has been simplified, replacing
  the drm_lease_check function with drm_lease_held.

Changes in v3, some suggested by Dave Airlie <airlied@gmail.com>

* Add revocation. This allows leases to be effectively revoked by
  removing all of the objects they have access to. The lease itself
  hangs around as it's hanging off a file.

* Free the leases IDR when the master is destroyed

* _drm_lease_held should look at lessees, not lessor

* Allow non-master files to check for lease status

Changes in v4, suggested by Dave Airlie <airlied@gmail.com>

* Formatting and whitespace changes

Changes in v5 (airlied)

* check DRIVER_MODESET before lease destroy call
* check DRIVER_MODESET for lease revoke (Chris)
* Use idr_mutex uniformly for all lease elements of struct drm_master. (Keith)

Signed-off-by: Keith Packard <keithp@keithp.com>
2017-10-25 16:31:29 +10:00
..
bridge drm/bridge/sii8620: add remote control support 2017-10-11 13:14:25 +02:00
i2c drm/i2c: tda998x: Register ASoC hdmi-codec and add audio DT binding 2016-09-07 13:10:10 +01:00
tinydrm drm/tinydrm: Generalize tinydrm_xrgb8888_to_gray8() 2017-08-09 17:55:50 +02:00
ttm drm/ttm: add support for different pool sizes 2017-10-06 17:44:16 -04:00
ati_pcigart.h drm: Move legacy buffer structures to <drm/drm_legacy.h> 2014-09-12 15:28:12 +02:00
drm_agpsupport.h drm: Give drm_agp_clear drm_legacy_ prefix 2016-04-27 08:41:34 +02:00
drm_atomic_helper.h drm: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
drm_atomic.h drm/atomic: Make atomic iterators less surprising 2017-10-06 11:06:11 +02:00
drm_auth.h drm: Add drm_object lease infrastructure [v5] 2017-10-25 16:31:29 +10:00
drm_blend.h drm: Add DRM_MODE_ROTATE_ and DRM_MODE_REFLECT_ to UAPI 2017-05-22 09:49:48 +02:00
drm_bridge.h drm/bridge: change return type of drm_bridge_add function 2017-08-21 08:51:53 +05:30
drm_cache.h drm: Move drm_clflush prototypes to drm_cache header file 2017-01-10 11:17:01 +01:00
drm_color_mgmt.h drm: drm_color_mgmt.h needs struct drm_crtc declaration 2017-05-02 10:30:23 +02:00
drm_connector.h drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_crtc_helper.h drm/atomic: Acquire connection_mutex lock in drm_helper_probe_single_connector_modes, v4. 2017-04-06 21:29:23 +02:00
drm_crtc.h drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_debugfs_crc.h drm: Add API for capturing frame CRCs 2016-10-17 16:44:34 +02:00
drm_debugfs.h drm/debugfs: Add kerneldoc 2017-03-24 09:36:06 +01:00
drm_device.h drm: Extract drm_device.h 2017-08-11 10:47:17 +02:00
drm_displayid.h drm/edid: add displayid detailed 1 timings to the modelist. (v1.1) 2016-05-23 11:35:31 +10:00
drm_dp_dual_mode_helper.h drm: Fix LSPCON kernel-doc 2016-10-19 18:20:40 +03:00
drm_dp_helper.h drm/dp: Add defines for latency in sink 2017-09-28 09:39:35 -07:00
drm_dp_mst_helper.h drm/dp/mst: Sideband message transaction to power up/down nodes 2017-09-11 16:03:57 +03:00
drm_drv.h drm: vblank: use ktime_t instead of timeval 2017-10-13 08:34:46 +10:00
drm_edid.h drm: add backwards compatibility support for drm_kms_helper.edid_firmware 2017-09-19 18:11:45 +03:00
drm_encoder_slave.h drm: Don't include <drm/drm_encoder.h> in <drm/drm_crtc.h> 2016-12-18 16:29:29 +05:30
drm_encoder.h drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_fb_cma_helper.h drm/fb-cma-helper: Remove unused functions 2017-10-01 17:05:39 +02:00
drm_fb_helper.h drm: remove unused and redundant callbacks 2017-08-07 11:20:36 +02:00
drm_file.h drm: introduce sync objects (v4) 2017-06-14 12:10:22 +10:00
drm_fixed.h drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil 2016-02-05 15:23:48 +10:00
drm_flip_work.h drm/kms-helpers: Use recommened kerneldoc for struct member refs 2017-01-25 16:18:57 +01:00
drm_fourcc.h drm: Add mode_config .get_format_info() hook 2017-03-22 19:45:00 +02:00
drm_framebuffer.h drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_gem_cma_helper.h drm/gem-cma-helper: Remove drm_gem_cma_dumb_map_offset() 2017-08-16 20:21:24 +02:00
drm_gem_framebuffer_helper.h drm/gem-fb-helper: Use debug message on gem lookup failure 2017-09-16 14:06:53 +02:00
drm_gem.h drm/gem: Add drm_gem_dumb_map_offset() 2017-07-29 13:49:55 +02:00
drm_global.h drm: drop extern from function decls 2017-03-24 09:36:06 +01:00
drm_hashtab.h drm: drop extern from function decls 2017-03-24 09:36:06 +01:00
drm_ioctl.h new helper: drm_ioctl_kernel() 2017-05-27 15:39:28 -04:00
drm_irq.h drm: Extract drm_vblank.[hc] 2017-06-01 08:02:14 +02:00
drm_lease.h drm: Add drm_object lease infrastructure [v5] 2017-10-25 16:31:29 +10:00
drm_legacy.h drm: document drm_auth.c 2016-06-21 22:10:55 +02:00
drm_mipi_dsi.h drm/dsi: Implement DCS set/get display brightness 2016-08-24 13:34:00 +02:00
drm_mm.h lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
drm_mode_config.h drm/plane: drop num_overlay_planes (v3) 2017-10-17 11:32:29 +10:00
drm_mode_object.h drm: Add drm_object lease infrastructure [v5] 2017-10-25 16:31:29 +10:00
drm_modes.h drm: add helper functions for YCBCR420 handling 2017-07-14 21:23:54 +03:00
drm_modeset_helper_vtables.h drm/vtables: Fix typo 2017-09-01 19:50:24 +02:00
drm_modeset_helper.h drm: Pass 'dev' to drm_helper_mode_fill_fb_struct() 2016-12-15 14:03:30 +02:00
drm_modeset_lock.h drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2. 2017-09-13 09:50:52 +02:00
drm_of.h drm/drm_of: Move drm_of_panel_bridge_remove_function into header. 2017-10-13 16:59:36 +02:00
drm_os_linux.h drm: remove writeq/readq function definitions 2017-06-02 10:41:20 -04:00
drm_panel.h drm: make drm_panel.h self-contained 2017-05-16 17:17:02 +02:00
drm_pci.h drm/pci: Deprecate drm_pci_init/exit completely 2017-06-20 10:41:03 +02:00
drm_pciids.h drm/radeon: add new OLAND pci id 2015-08-12 12:24:05 -04:00
drm_plane_helper.h drm: Add acquire ctx parameter to ->plane_disable 2017-03-29 09:14:58 +02:00
drm_plane.h drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_prime.h drm: Extract drm_vblank.[hc] 2017-06-01 08:02:14 +02:00
drm_print.h drm: drm_printer: add __printf validation 2017-02-26 21:43:08 +01:00
drm_property.h drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_rect.h drm/doc: move printf helpers out of drmP.h 2017-05-31 09:59:41 +02:00
drm_scdc_helper.h drm: Fix warning when building docs for scdc_helper 2017-07-31 14:24:14 +02:00
drm_simple_kms_helper.h drm: Plumb modifiers through plane init 2017-08-01 17:50:06 +01:00
drm_syncobj.h drm/syncobj: add a new helper drm_syncobj_get_fd 2017-10-06 16:47:53 -04:00
drm_sysfs.h drm: Consolidate and document sysfs support 2017-04-04 20:47:54 +02:00
drm_vblank.h drm: Add CRTC_GET_SEQUENCE and CRTC_QUEUE_SEQUENCE ioctls [v3] 2017-10-23 11:15:03 +10:00
drm_vma_manager.h drm: Extract drm_prime.h 2017-03-09 16:18:02 +01:00
drmP.h drm: Add new LEASE debug level 2017-10-25 16:31:29 +10:00
gma_drm.h drm/gma500: Remove unused ioctls 2014-03-17 20:11:57 +01:00
i915_component.h drm/i915/dp: DP audio API changes for MST 2016-09-22 09:01:55 -07:00
i915_drm.h drm: avoid "possible bad bitmask?" warning 2016-08-09 22:18:26 +02:00
i915_pciids.h drm/i915/kbl: Change a KBL pci id to GT2 from GT1.5 2017-09-21 06:22:29 -07:00
intel_lpe_audio.h ALSA: x86: Register multiple PCM devices for the LPE audio card 2017-05-03 16:24:00 +03:00
intel-gtt.h drm/i915: Use fixed-sized types for stolen 2017-01-06 16:02:09 +00:00