![Dave Airlie](/assets/img/avatar_default.png)
- Block fb changes for async atomic updates to prevent a use after free. - Fix ID mismatch error on load in bochs. - Fix memory leak when drm_setup fails. - Fixes around handling of DRM_AUTH. - -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAlxvuWMACgkQ/lWMcqZw E8PzZQ/8CzXSzUVCx2yB5fk26FBk8F0O7lJuARE4R7UiH43qtxn8/IRsIB7P/TDe GNmqqJ6k7rFaW3SVvfsa1qGqi52w0CmvAGTBhBFCpjQQwEvYq6oGNi5cyGbRTWZU mio11DABVk3ZOeAuZLxn5Ua4s981hEC5IJqHxS37v/GZY8E3NJDPVklHRzBIN++i uB89RDIa359dlxRKxXqyyO2nnpO3Tx217ysgxY2WPUPp/bwFozPFcumltTqGaTdq 9TEtWHzJJ6IDUpdUxz+hsFd+B1EDP2klpJQXi5am80XtIB7z7C2G8gkNsmf9V9Ft vlCe0rKYFFKZaBp9ed8TRw+UIOhyr8aGmuprlnz5JCyIYxgdCUVabJ4sC1KAdGge wNGR9Orpkb12CrFahwcnKqWPAMBIvZa8da9NhmsonXGEhv6aewJdTBO7upcdb4BQ B6SG9hMVcxNqDSktemcH4qaKhU4cempDomliZ4As28nbQDGmCayRBjAttFzZluOB kU46GIMjqhE18DKPwTz2SisV2xDCu0VvbQObV6PSpl7sf0vKz5nFMr1LQHYt3WG3 GTF5u5mUtAwkcDdRdyDHrKsUI/IAXceRIaa7PJhWwRVlE4lY9/QNXccvJWjSy5Zc rrWn0TTNlWX+0fQFHr2NmYDn2h9suTnKSCW6fd83TPe/UTYnXXs= =Rf1K -----END PGP SIGNATURE----- Merge tag 'drm-misc-fixes-2019-02-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-fixes for v5.0: - Block fb changes for async atomic updates to prevent a use after free. - Fix ID mismatch error on load in bochs. - Fix memory leak when drm_setup fails. - Fixes around handling of DRM_AUTH. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/42113611-e2cd-6bdd-7de5-4f8ab5a0cbe6@linux.intel.com
794 lines
24 KiB
C
794 lines
24 KiB
C
/*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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* Copyright (c) 2009-2010, Code Aurora Forum.
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* Copyright 2016 Intel Corp.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _DRM_DRV_H_
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#define _DRM_DRV_H_
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#include <linux/list.h>
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#include <linux/irqreturn.h>
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#include <drm/drm_device.h>
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struct drm_file;
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struct drm_gem_object;
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struct drm_master;
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struct drm_minor;
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struct dma_buf_attachment;
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struct drm_display_mode;
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struct drm_mode_create_dumb;
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struct drm_printer;
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/**
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* enum drm_driver_feature - feature flags
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*
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* See &drm_driver.driver_features, drm_device.driver_features and
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* drm_core_check_feature().
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*/
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enum drm_driver_feature {
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/**
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* @DRIVER_GEM:
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*
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* Driver use the GEM memory manager. This should be set for all modern
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* drivers.
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*/
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DRIVER_GEM = BIT(0),
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/**
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* @DRIVER_MODESET:
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*
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* Driver supports mode setting interfaces (KMS).
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*/
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DRIVER_MODESET = BIT(1),
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/**
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* @DRIVER_PRIME:
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*
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* Driver implements DRM PRIME buffer sharing.
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*/
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DRIVER_PRIME = BIT(2),
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/**
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* @DRIVER_RENDER:
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*
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* Driver supports dedicated render nodes. See also the :ref:`section on
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* render nodes <drm_render_node>` for details.
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*/
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DRIVER_RENDER = BIT(3),
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/**
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* @DRIVER_ATOMIC:
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*
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* Driver supports the full atomic modesetting userspace API. Drivers
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* which only use atomic internally, but do not the support the full
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* userspace API (e.g. not all properties converted to atomic, or
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* multi-plane updates are not guaranteed to be tear-free) should not
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* set this flag.
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*/
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DRIVER_ATOMIC = BIT(4),
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/**
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* @DRIVER_SYNCOBJ:
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*
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* Driver supports &drm_syncobj for explicit synchronization of command
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* submission.
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*/
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DRIVER_SYNCOBJ = BIT(5),
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/* IMPORTANT: Below are all the legacy flags, add new ones above. */
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/**
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* @DRIVER_USE_AGP:
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*
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* Set up DRM AGP support, see drm_agp_init(), the DRM core will manage
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* AGP resources. New drivers don't need this.
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*/
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DRIVER_USE_AGP = BIT(25),
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/**
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* @DRIVER_LEGACY:
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*
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* Denote a legacy driver using shadow attach. Do not use.
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*/
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DRIVER_LEGACY = BIT(26),
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/**
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* @DRIVER_PCI_DMA:
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*
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* Driver is capable of PCI DMA, mapping of PCI DMA buffers to userspace
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* will be enabled. Only for legacy drivers. Do not use.
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*/
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DRIVER_PCI_DMA = BIT(27),
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/**
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* @DRIVER_SG:
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*
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* Driver can perform scatter/gather DMA, allocation and mapping of
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* scatter/gather buffers will be enabled. Only for legacy drivers. Do
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* not use.
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*/
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DRIVER_SG = BIT(28),
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/**
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* @DRIVER_HAVE_DMA:
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*
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* Driver supports DMA, the userspace DMA API will be supported. Only
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* for legacy drivers. Do not use.
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*/
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DRIVER_HAVE_DMA = BIT(29),
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/**
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* @DRIVER_HAVE_IRQ:
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*
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* Legacy irq support. Only for legacy drivers. Do not use.
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*
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* New drivers can either use the drm_irq_install() and
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* drm_irq_uninstall() helper functions, or roll their own irq support
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* code by calling request_irq() directly.
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*/
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DRIVER_HAVE_IRQ = BIT(30),
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/**
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* @DRIVER_KMS_LEGACY_CONTEXT:
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*
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* Used only by nouveau for backwards compatibility with existing
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* userspace. Do not use.
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*/
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DRIVER_KMS_LEGACY_CONTEXT = BIT(31),
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};
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/**
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* struct drm_driver - DRM driver structure
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*
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* This structure represent the common code for a family of cards. There will
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* one drm_device for each card present in this family. It contains lots of
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* vfunc entries, and a pile of those probably should be moved to more
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* appropriate places like &drm_mode_config_funcs or into a new operations
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* structure for GEM drivers.
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*/
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struct drm_driver {
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/**
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* @load:
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*
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* Backward-compatible driver callback to complete
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* initialization steps after the driver is registered. For
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* this reason, may suffer from race conditions and its use is
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* deprecated for new drivers. It is therefore only supported
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* for existing drivers not yet converted to the new scheme.
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* See drm_dev_init() and drm_dev_register() for proper and
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* race-free way to set up a &struct drm_device.
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*
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* This is deprecated, do not use!
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*
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* Returns:
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*
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* Zero on success, non-zero value on failure.
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*/
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int (*load) (struct drm_device *, unsigned long flags);
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/**
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* @open:
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*
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* Driver callback when a new &struct drm_file is opened. Useful for
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* setting up driver-private data structures like buffer allocators,
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* execution contexts or similar things. Such driver-private resources
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* must be released again in @postclose.
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*
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* Since the display/modeset side of DRM can only be owned by exactly
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* one &struct drm_file (see &drm_file.is_master and &drm_device.master)
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* there should never be a need to set up any modeset related resources
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* in this callback. Doing so would be a driver design bug.
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*
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* Returns:
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*
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* 0 on success, a negative error code on failure, which will be
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* promoted to userspace as the result of the open() system call.
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*/
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int (*open) (struct drm_device *, struct drm_file *);
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/**
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* @postclose:
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*
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* One of the driver callbacks when a new &struct drm_file is closed.
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* Useful for tearing down driver-private data structures allocated in
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* @open like buffer allocators, execution contexts or similar things.
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*
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* Since the display/modeset side of DRM can only be owned by exactly
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* one &struct drm_file (see &drm_file.is_master and &drm_device.master)
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* there should never be a need to tear down any modeset related
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* resources in this callback. Doing so would be a driver design bug.
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*/
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void (*postclose) (struct drm_device *, struct drm_file *);
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/**
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* @lastclose:
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*
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* Called when the last &struct drm_file has been closed and there's
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* currently no userspace client for the &struct drm_device.
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*
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* Modern drivers should only use this to force-restore the fbdev
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* framebuffer using drm_fb_helper_restore_fbdev_mode_unlocked().
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* Anything else would indicate there's something seriously wrong.
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* Modern drivers can also use this to execute delayed power switching
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* state changes, e.g. in conjunction with the :ref:`vga_switcheroo`
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* infrastructure.
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*
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* This is called after @postclose hook has been called.
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*
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* NOTE:
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*
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* All legacy drivers use this callback to de-initialize the hardware.
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* This is purely because of the shadow-attach model, where the DRM
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* kernel driver does not really own the hardware. Instead ownershipe is
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* handled with the help of userspace through an inheritedly racy dance
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* to set/unset the VT into raw mode.
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*
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* Legacy drivers initialize the hardware in the @firstopen callback,
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* which isn't even called for modern drivers.
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*/
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void (*lastclose) (struct drm_device *);
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/**
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* @unload:
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*
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* Reverse the effects of the driver load callback. Ideally,
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* the clean up performed by the driver should happen in the
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* reverse order of the initialization. Similarly to the load
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* hook, this handler is deprecated and its usage should be
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* dropped in favor of an open-coded teardown function at the
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* driver layer. See drm_dev_unregister() and drm_dev_put()
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* for the proper way to remove a &struct drm_device.
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*
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* The unload() hook is called right after unregistering
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* the device.
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*
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*/
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void (*unload) (struct drm_device *);
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/**
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* @release:
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*
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* Optional callback for destroying device data after the final
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* reference is released, i.e. the device is being destroyed. Drivers
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* using this callback are responsible for calling drm_dev_fini()
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* to finalize the device and then freeing the struct themselves.
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*/
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void (*release) (struct drm_device *);
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/**
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* @get_vblank_counter:
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*
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* Driver callback for fetching a raw hardware vblank counter for the
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* CRTC specified with the pipe argument. If a device doesn't have a
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* hardware counter, the driver can simply leave the hook as NULL.
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* The DRM core will account for missed vblank events while interrupts
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* where disabled based on system timestamps.
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*
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* Wraparound handling and loss of events due to modesetting is dealt
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* with in the DRM core code, as long as drivers call
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* drm_crtc_vblank_off() and drm_crtc_vblank_on() when disabling or
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* enabling a CRTC.
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*
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* This is deprecated and should not be used by new drivers.
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* Use &drm_crtc_funcs.get_vblank_counter instead.
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*
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* Returns:
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*
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* Raw vblank counter value.
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*/
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u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
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/**
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* @enable_vblank:
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*
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* Enable vblank interrupts for the CRTC specified with the pipe
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* argument.
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*
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* This is deprecated and should not be used by new drivers.
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* Use &drm_crtc_funcs.enable_vblank instead.
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*
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* Returns:
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*
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* Zero on success, appropriate errno if the given @crtc's vblank
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* interrupt cannot be enabled.
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*/
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int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
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/**
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* @disable_vblank:
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*
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* Disable vblank interrupts for the CRTC specified with the pipe
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* argument.
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*
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* This is deprecated and should not be used by new drivers.
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* Use &drm_crtc_funcs.disable_vblank instead.
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*/
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void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
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/**
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* @get_scanout_position:
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*
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* Called by vblank timestamping code.
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*
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* Returns the current display scanout position from a crtc, and an
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* optional accurate ktime_get() timestamp of when position was
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* measured. Note that this is a helper callback which is only used if a
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* driver uses drm_calc_vbltimestamp_from_scanoutpos() for the
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* @get_vblank_timestamp callback.
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*
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* Parameters:
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*
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* dev:
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* DRM device.
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* pipe:
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* Id of the crtc to query.
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* in_vblank_irq:
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* True when called from drm_crtc_handle_vblank(). Some drivers
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* need to apply some workarounds for gpu-specific vblank irq quirks
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* if flag is set.
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* vpos:
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* Target location for current vertical scanout position.
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* hpos:
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* Target location for current horizontal scanout position.
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* stime:
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* Target location for timestamp taken immediately before
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* scanout position query. Can be NULL to skip timestamp.
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* etime:
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* Target location for timestamp taken immediately after
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* scanout position query. Can be NULL to skip timestamp.
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* mode:
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* Current display timings.
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*
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* Returns vpos as a positive number while in active scanout area.
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* Returns vpos as a negative number inside vblank, counting the number
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* of scanlines to go until end of vblank, e.g., -1 means "one scanline
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* until start of active scanout / end of vblank."
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*
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* Returns:
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*
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* True on success, false if a reliable scanout position counter could
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* not be read out.
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*
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* FIXME:
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*
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* Since this is a helper to implement @get_vblank_timestamp, we should
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* move it to &struct drm_crtc_helper_funcs, like all the other
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* helper-internal hooks.
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*/
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bool (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
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bool in_vblank_irq, int *vpos, int *hpos,
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ktime_t *stime, ktime_t *etime,
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const struct drm_display_mode *mode);
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/**
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* @get_vblank_timestamp:
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*
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* Called by drm_get_last_vbltimestamp(). Should return a precise
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* timestamp when the most recent VBLANK interval ended or will end.
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*
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* Specifically, the timestamp in @vblank_time should correspond as
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* closely as possible to the time when the first video scanline of
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* the video frame after the end of VBLANK will start scanning out,
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* the time immediately after end of the VBLANK interval. If the
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* @crtc is currently inside VBLANK, this will be a time in the future.
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* If the @crtc is currently scanning out a frame, this will be the
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* past start time of the current scanout. This is meant to adhere
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* to the OpenML OML_sync_control extension specification.
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*
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* Paramters:
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*
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* dev:
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* dev DRM device handle.
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* pipe:
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* crtc for which timestamp should be returned.
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* max_error:
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* Maximum allowable timestamp error in nanoseconds.
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* Implementation should strive to provide timestamp
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* with an error of at most max_error nanoseconds.
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* Returns true upper bound on error for timestamp.
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* vblank_time:
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* Target location for returned vblank timestamp.
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* in_vblank_irq:
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* True when called from drm_crtc_handle_vblank(). Some drivers
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* need to apply some workarounds for gpu-specific vblank irq quirks
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* if flag is set.
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*
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* Returns:
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*
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* True on success, false on failure, which means the core should
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* fallback to a simple timestamp taken in drm_crtc_handle_vblank().
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*
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* FIXME:
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*
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* We should move this hook to &struct drm_crtc_funcs like all the other
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* vblank hooks.
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*/
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bool (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
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int *max_error,
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ktime_t *vblank_time,
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bool in_vblank_irq);
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/**
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* @irq_handler:
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*
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* Interrupt handler called when using drm_irq_install(). Not used by
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* drivers which implement their own interrupt handling.
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*/
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irqreturn_t(*irq_handler) (int irq, void *arg);
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/**
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* @irq_preinstall:
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*
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* Optional callback used by drm_irq_install() which is called before
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* the interrupt handler is registered. This should be used to clear out
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* any pending interrupts (from e.g. firmware based drives) and reset
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* the interrupt handling registers.
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*/
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void (*irq_preinstall) (struct drm_device *dev);
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/**
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* @irq_postinstall:
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*
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* Optional callback used by drm_irq_install() which is called after
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* the interrupt handler is registered. This should be used to enable
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* interrupt generation in the hardware.
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*/
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int (*irq_postinstall) (struct drm_device *dev);
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/**
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* @irq_uninstall:
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*
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* Optional callback used by drm_irq_uninstall() which is called before
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* the interrupt handler is unregistered. This should be used to disable
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* interrupt generation in the hardware.
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*/
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void (*irq_uninstall) (struct drm_device *dev);
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/**
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* @master_create:
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*
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* Called whenever a new master is created. Only used by vmwgfx.
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*/
|
|
int (*master_create)(struct drm_device *dev, struct drm_master *master);
|
|
|
|
/**
|
|
* @master_destroy:
|
|
*
|
|
* Called whenever a master is destroyed. Only used by vmwgfx.
|
|
*/
|
|
void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
|
|
|
|
/**
|
|
* @master_set:
|
|
*
|
|
* Called whenever the minor master is set. Only used by vmwgfx.
|
|
*/
|
|
int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
|
|
bool from_open);
|
|
/**
|
|
* @master_drop:
|
|
*
|
|
* Called whenever the minor master is dropped. Only used by vmwgfx.
|
|
*/
|
|
void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv);
|
|
|
|
/**
|
|
* @debugfs_init:
|
|
*
|
|
* Allows drivers to create driver-specific debugfs files.
|
|
*/
|
|
int (*debugfs_init)(struct drm_minor *minor);
|
|
|
|
/**
|
|
* @gem_free_object: deconstructor for drm_gem_objects
|
|
*
|
|
* This is deprecated and should not be used by new drivers. Use
|
|
* @gem_free_object_unlocked instead.
|
|
*/
|
|
void (*gem_free_object) (struct drm_gem_object *obj);
|
|
|
|
/**
|
|
* @gem_free_object_unlocked: deconstructor for drm_gem_objects
|
|
*
|
|
* This is for drivers which are not encumbered with &drm_device.struct_mutex
|
|
* legacy locking schemes. Use this hook instead of @gem_free_object.
|
|
*/
|
|
void (*gem_free_object_unlocked) (struct drm_gem_object *obj);
|
|
|
|
/**
|
|
* @gem_open_object:
|
|
*
|
|
* Driver hook called upon gem handle creation
|
|
*/
|
|
int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
|
|
|
|
/**
|
|
* @gem_close_object:
|
|
*
|
|
* Driver hook called upon gem handle release
|
|
*/
|
|
void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
|
|
|
|
/**
|
|
* @gem_print_info:
|
|
*
|
|
* If driver subclasses struct &drm_gem_object, it can implement this
|
|
* optional hook for printing additional driver specific info.
|
|
*
|
|
* drm_printf_indent() should be used in the callback passing it the
|
|
* indent argument.
|
|
*
|
|
* This callback is called from drm_gem_print_info().
|
|
*/
|
|
void (*gem_print_info)(struct drm_printer *p, unsigned int indent,
|
|
const struct drm_gem_object *obj);
|
|
|
|
/**
|
|
* @gem_create_object: constructor for gem objects
|
|
*
|
|
* Hook for allocating the GEM object struct, for use by core
|
|
* helpers.
|
|
*/
|
|
struct drm_gem_object *(*gem_create_object)(struct drm_device *dev,
|
|
size_t size);
|
|
|
|
/* prime: */
|
|
/**
|
|
* @prime_handle_to_fd:
|
|
*
|
|
* export handle -> fd (see drm_gem_prime_handle_to_fd() helper)
|
|
*/
|
|
int (*prime_handle_to_fd)(struct drm_device *dev, struct drm_file *file_priv,
|
|
uint32_t handle, uint32_t flags, int *prime_fd);
|
|
/**
|
|
* @prime_fd_to_handle:
|
|
*
|
|
* import fd -> handle (see drm_gem_prime_fd_to_handle() helper)
|
|
*/
|
|
int (*prime_fd_to_handle)(struct drm_device *dev, struct drm_file *file_priv,
|
|
int prime_fd, uint32_t *handle);
|
|
/**
|
|
* @gem_prime_export:
|
|
*
|
|
* export GEM -> dmabuf
|
|
*
|
|
* This defaults to drm_gem_prime_export() if not set.
|
|
*/
|
|
struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
|
|
struct drm_gem_object *obj, int flags);
|
|
/**
|
|
* @gem_prime_import:
|
|
*
|
|
* import dmabuf -> GEM
|
|
*
|
|
* This defaults to drm_gem_prime_import() if not set.
|
|
*/
|
|
struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
|
|
struct dma_buf *dma_buf);
|
|
int (*gem_prime_pin)(struct drm_gem_object *obj);
|
|
void (*gem_prime_unpin)(struct drm_gem_object *obj);
|
|
struct reservation_object * (*gem_prime_res_obj)(
|
|
struct drm_gem_object *obj);
|
|
struct sg_table *(*gem_prime_get_sg_table)(struct drm_gem_object *obj);
|
|
struct drm_gem_object *(*gem_prime_import_sg_table)(
|
|
struct drm_device *dev,
|
|
struct dma_buf_attachment *attach,
|
|
struct sg_table *sgt);
|
|
void *(*gem_prime_vmap)(struct drm_gem_object *obj);
|
|
void (*gem_prime_vunmap)(struct drm_gem_object *obj, void *vaddr);
|
|
int (*gem_prime_mmap)(struct drm_gem_object *obj,
|
|
struct vm_area_struct *vma);
|
|
|
|
/**
|
|
* @dumb_create:
|
|
*
|
|
* This creates a new dumb buffer in the driver's backing storage manager (GEM,
|
|
* TTM or something else entirely) and returns the resulting buffer handle. This
|
|
* handle can then be wrapped up into a framebuffer modeset object.
|
|
*
|
|
* Note that userspace is not allowed to use such objects for render
|
|
* acceleration - drivers must create their own private ioctls for such a use
|
|
* case.
|
|
*
|
|
* Width, height and depth are specified in the &drm_mode_create_dumb
|
|
* argument. The callback needs to fill the handle, pitch and size for
|
|
* the created buffer.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
*
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int (*dumb_create)(struct drm_file *file_priv,
|
|
struct drm_device *dev,
|
|
struct drm_mode_create_dumb *args);
|
|
/**
|
|
* @dumb_map_offset:
|
|
*
|
|
* Allocate an offset in the drm device node's address space to be able to
|
|
* memory map a dumb buffer.
|
|
*
|
|
* The default implementation is drm_gem_create_mmap_offset(). GEM based
|
|
* drivers must not overwrite this.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
*
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int (*dumb_map_offset)(struct drm_file *file_priv,
|
|
struct drm_device *dev, uint32_t handle,
|
|
uint64_t *offset);
|
|
/**
|
|
* @dumb_destroy:
|
|
*
|
|
* This destroys the userspace handle for the given dumb backing storage buffer.
|
|
* Since buffer objects must be reference counted in the kernel a buffer object
|
|
* won't be immediately freed if a framebuffer modeset object still uses it.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* The default implementation is drm_gem_dumb_destroy(). GEM based drivers
|
|
* must not overwrite this.
|
|
*
|
|
* Returns:
|
|
*
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int (*dumb_destroy)(struct drm_file *file_priv,
|
|
struct drm_device *dev,
|
|
uint32_t handle);
|
|
|
|
/**
|
|
* @gem_vm_ops: Driver private ops for this object
|
|
*/
|
|
const struct vm_operations_struct *gem_vm_ops;
|
|
|
|
/** @major: driver major number */
|
|
int major;
|
|
/** @minor: driver minor number */
|
|
int minor;
|
|
/** @patchlevel: driver patch level */
|
|
int patchlevel;
|
|
/** @name: driver name */
|
|
char *name;
|
|
/** @desc: driver description */
|
|
char *desc;
|
|
/** @date: driver date */
|
|
char *date;
|
|
|
|
/**
|
|
* @driver_features:
|
|
* Driver features, see &enum drm_driver_feature. Drivers can disable
|
|
* some features on a per-instance basis using
|
|
* &drm_device.driver_features.
|
|
*/
|
|
u32 driver_features;
|
|
|
|
/**
|
|
* @ioctls:
|
|
*
|
|
* Array of driver-private IOCTL description entries. See the chapter on
|
|
* :ref:`IOCTL support in the userland interfaces
|
|
* chapter<drm_driver_ioctl>` for the full details.
|
|
*/
|
|
|
|
const struct drm_ioctl_desc *ioctls;
|
|
/** @num_ioctls: Number of entries in @ioctls. */
|
|
int num_ioctls;
|
|
|
|
/**
|
|
* @fops:
|
|
*
|
|
* File operations for the DRM device node. See the discussion in
|
|
* :ref:`file operations<drm_driver_fops>` for in-depth coverage and
|
|
* some examples.
|
|
*/
|
|
const struct file_operations *fops;
|
|
|
|
/* Everything below here is for legacy driver, never use! */
|
|
/* private: */
|
|
|
|
/* List of devices hanging off this driver with stealth attach. */
|
|
struct list_head legacy_dev_list;
|
|
int (*firstopen) (struct drm_device *);
|
|
void (*preclose) (struct drm_device *, struct drm_file *file_priv);
|
|
int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
|
|
int (*dma_quiescent) (struct drm_device *);
|
|
int (*context_dtor) (struct drm_device *dev, int context);
|
|
int dev_priv_size;
|
|
};
|
|
|
|
extern unsigned int drm_debug;
|
|
|
|
int drm_dev_init(struct drm_device *dev,
|
|
struct drm_driver *driver,
|
|
struct device *parent);
|
|
void drm_dev_fini(struct drm_device *dev);
|
|
|
|
struct drm_device *drm_dev_alloc(struct drm_driver *driver,
|
|
struct device *parent);
|
|
int drm_dev_register(struct drm_device *dev, unsigned long flags);
|
|
void drm_dev_unregister(struct drm_device *dev);
|
|
|
|
void drm_dev_get(struct drm_device *dev);
|
|
void drm_dev_put(struct drm_device *dev);
|
|
void drm_put_dev(struct drm_device *dev);
|
|
bool drm_dev_enter(struct drm_device *dev, int *idx);
|
|
void drm_dev_exit(int idx);
|
|
void drm_dev_unplug(struct drm_device *dev);
|
|
|
|
/**
|
|
* drm_dev_is_unplugged - is a DRM device unplugged
|
|
* @dev: DRM device
|
|
*
|
|
* This function can be called to check whether a hotpluggable is unplugged.
|
|
* Unplugging itself is singalled through drm_dev_unplug(). If a device is
|
|
* unplugged, these two functions guarantee that any store before calling
|
|
* drm_dev_unplug() is visible to callers of this function after it completes
|
|
*
|
|
* WARNING: This function fundamentally races against drm_dev_unplug(). It is
|
|
* recommended that drivers instead use the underlying drm_dev_enter() and
|
|
* drm_dev_exit() function pairs.
|
|
*/
|
|
static inline bool drm_dev_is_unplugged(struct drm_device *dev)
|
|
{
|
|
int idx;
|
|
|
|
if (drm_dev_enter(dev, &idx)) {
|
|
drm_dev_exit(idx);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* drm_core_check_feature - check driver feature flags
|
|
* @dev: DRM device to check
|
|
* @feature: feature flag
|
|
*
|
|
* This checks @dev for driver features, see &drm_driver.driver_features,
|
|
* &drm_device.driver_features, and the various &enum drm_driver_feature flags.
|
|
*
|
|
* Returns true if the @feature is supported, false otherwise.
|
|
*/
|
|
static inline bool drm_core_check_feature(const struct drm_device *dev, u32 feature)
|
|
{
|
|
return dev->driver->driver_features & dev->driver_features & feature;
|
|
}
|
|
|
|
/**
|
|
* drm_drv_uses_atomic_modeset - check if the driver implements
|
|
* atomic_commit()
|
|
* @dev: DRM device
|
|
*
|
|
* This check is useful if drivers do not have DRIVER_ATOMIC set but
|
|
* have atomic modesetting internally implemented.
|
|
*/
|
|
static inline bool drm_drv_uses_atomic_modeset(struct drm_device *dev)
|
|
{
|
|
return drm_core_check_feature(dev, DRIVER_ATOMIC) ||
|
|
(dev->mode_config.funcs && dev->mode_config.funcs->atomic_commit != NULL);
|
|
}
|
|
|
|
|
|
int drm_dev_set_unique(struct drm_device *dev, const char *name);
|
|
|
|
|
|
#endif
|