![Chris Wilson](/assets/img/avatar_default.png)
dma_buf may live a long time, longer than the last direct user of the driver. We already hold a reference to the owner module (that prevents the object code from disappearing), but there is no reference to the drm_dev - so the pointers to the driver backend themselves may vanish. v2: Resist temptation to fix the bug in armada_gem.c not setting the correct flags on the exported dma-buf (it should pass the flags through and not be arbitrarily setting O_RDWR). Use a common wrapper for exporting the dmabuf and acquiring the reference to the drm_device. Testcase: igt/vgem_basic/unload Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Petri Latvala <petri.latvala@intel.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: stable@vger.kernel.org Tested-by: Petri Latvala <petri.latvala@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161005122145.1507-2-chris@chris-wilson.co.uk
1118 lines
36 KiB
C
1118 lines
36 KiB
C
/*
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* Internal Header for the Direct Rendering Manager
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*
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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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* All rights reserved.
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*
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* Author: Rickard E. (Rik) Faith <faith@valinux.com>
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* Author: Gareth Hughes <gareth@valinux.com>
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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_P_H_
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#define _DRM_P_H_
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#include <linux/agp_backend.h>
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#include <linux/cdev.h>
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#include <linux/dma-mapping.h>
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#include <linux/file.h>
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#include <linux/fs.h>
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#include <linux/highmem.h>
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#include <linux/idr.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/jiffies.h>
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#include <linux/kernel.h>
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#include <linux/kref.h>
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#include <linux/miscdevice.h>
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#include <linux/mm.h>
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#include <linux/mutex.h>
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#include <linux/pci.h>
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#include <linux/platform_device.h>
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#include <linux/poll.h>
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#include <linux/ratelimit.h>
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#include <linux/rbtree.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/vmalloc.h>
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#include <linux/workqueue.h>
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#include <linux/fence.h>
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#include <asm/mman.h>
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#include <asm/pgalloc.h>
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#include <asm/uaccess.h>
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#include <uapi/drm/drm.h>
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#include <uapi/drm/drm_mode.h>
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#include <drm/drm_agpsupport.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_global.h>
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#include <drm/drm_hashtab.h>
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#include <drm/drm_mem_util.h>
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#include <drm/drm_mm.h>
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#include <drm/drm_os_linux.h>
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#include <drm/drm_sarea.h>
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#include <drm/drm_vma_manager.h>
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struct module;
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struct drm_file;
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struct drm_device;
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struct drm_agp_head;
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struct drm_local_map;
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struct drm_device_dma;
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struct drm_dma_handle;
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struct drm_gem_object;
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struct drm_master;
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struct drm_vblank_crtc;
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struct device_node;
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struct videomode;
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struct reservation_object;
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struct dma_buf_attachment;
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/*
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* The following categories are defined:
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*
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* CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
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* This is the category used by the DRM_DEBUG() macro.
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*
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* DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
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* This is the category used by the DRM_DEBUG_DRIVER() macro.
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*
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* KMS: used in the modesetting code.
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* This is the category used by the DRM_DEBUG_KMS() macro.
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*
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* PRIME: used in the prime code.
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* This is the category used by the DRM_DEBUG_PRIME() macro.
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*
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* ATOMIC: used in the atomic code.
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* This is the category used by the DRM_DEBUG_ATOMIC() macro.
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*
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* VBL: used for verbose debug message in the vblank code
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* This is the category used by the DRM_DEBUG_VBL() macro.
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*
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* Enabling verbose debug messages is done through the drm.debug parameter,
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* each category being enabled by a bit.
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*
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* drm.debug=0x1 will enable CORE messages
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* drm.debug=0x2 will enable DRIVER messages
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* drm.debug=0x3 will enable CORE and DRIVER messages
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* ...
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* drm.debug=0x3f will enable all messages
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*
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* An interesting feature is that it's possible to enable verbose logging at
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* run-time by echoing the debug value in its sysfs node:
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* # echo 0xf > /sys/module/drm/parameters/debug
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*/
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#define DRM_UT_NONE 0x00
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#define DRM_UT_CORE 0x01
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#define DRM_UT_DRIVER 0x02
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#define DRM_UT_KMS 0x04
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#define DRM_UT_PRIME 0x08
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#define DRM_UT_ATOMIC 0x10
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#define DRM_UT_VBL 0x20
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extern __printf(6, 7)
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void drm_dev_printk(const struct device *dev, const char *level,
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unsigned int category, const char *function_name,
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const char *prefix, const char *format, ...);
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extern __printf(3, 4)
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void drm_printk(const char *level, unsigned int category,
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const char *format, ...);
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/***********************************************************************/
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/** \name DRM template customization defaults */
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/*@{*/
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/* driver capabilities and requirements mask */
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#define DRIVER_USE_AGP 0x1
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#define DRIVER_LEGACY 0x2
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#define DRIVER_PCI_DMA 0x8
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#define DRIVER_SG 0x10
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#define DRIVER_HAVE_DMA 0x20
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#define DRIVER_HAVE_IRQ 0x40
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#define DRIVER_IRQ_SHARED 0x80
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#define DRIVER_GEM 0x1000
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#define DRIVER_MODESET 0x2000
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#define DRIVER_PRIME 0x4000
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#define DRIVER_RENDER 0x8000
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#define DRIVER_ATOMIC 0x10000
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#define DRIVER_KMS_LEGACY_CONTEXT 0x20000
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/***********************************************************************/
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/** \name Macros to make printk easier */
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/*@{*/
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#define _DRM_PRINTK(once, level, fmt, ...) \
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do { \
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printk##once(KERN_##level "[" DRM_NAME "] " fmt, \
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##__VA_ARGS__); \
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} while (0)
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#define DRM_INFO(fmt, ...) \
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_DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)
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#define DRM_NOTE(fmt, ...) \
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_DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)
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#define DRM_WARN(fmt, ...) \
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_DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__)
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#define DRM_INFO_ONCE(fmt, ...) \
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_DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__)
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#define DRM_NOTE_ONCE(fmt, ...) \
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_DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__)
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#define DRM_WARN_ONCE(fmt, ...) \
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_DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__)
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/**
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* Error output.
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*
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* \param fmt printf() like format string.
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* \param arg arguments
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*/
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#define DRM_DEV_ERROR(dev, fmt, ...) \
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drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\
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fmt, ##__VA_ARGS__)
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#define DRM_ERROR(fmt, ...) \
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drm_printk(KERN_ERR, DRM_UT_NONE, fmt, ##__VA_ARGS__)
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/**
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* Rate limited error output. Like DRM_ERROR() but won't flood the log.
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*
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* \param fmt printf() like format string.
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* \param arg arguments
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*/
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#define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...) \
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({ \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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\
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if (__ratelimit(&_rs)) \
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DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__); \
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})
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#define DRM_ERROR_RATELIMITED(fmt, ...) \
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DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__)
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#define DRM_DEV_INFO(dev, fmt, ...) \
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drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt, \
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##__VA_ARGS__)
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#define DRM_DEV_INFO_ONCE(dev, fmt, ...) \
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({ \
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static bool __print_once __read_mostly; \
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if (!__print_once) { \
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__print_once = true; \
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DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__); \
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} \
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})
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/**
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* Debug output.
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*
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* \param fmt printf() like format string.
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* \param arg arguments
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*/
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#define DRM_DEV_DEBUG(dev, fmt, args...) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, \
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##args)
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#define DRM_DEBUG(fmt, ...) \
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drm_printk(KERN_DEBUG, DRM_UT_CORE, fmt, ##__VA_ARGS__)
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#define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "", \
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fmt, ##args)
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#define DRM_DEBUG_DRIVER(fmt, ...) \
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drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
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#define DRM_DEV_DEBUG_KMS(dev, fmt, args...) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt, \
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##args)
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#define DRM_DEBUG_KMS(fmt, ...) \
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drm_printk(KERN_DEBUG, DRM_UT_KMS, fmt, ##__VA_ARGS__)
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#define DRM_DEV_DEBUG_PRIME(dev, fmt, args...) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "", \
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fmt, ##args)
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#define DRM_DEBUG_PRIME(fmt, ...) \
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drm_printk(KERN_DEBUG, DRM_UT_PRIME, fmt, ##__VA_ARGS__)
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#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "", \
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fmt, ##args)
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#define DRM_DEBUG_ATOMIC(fmt, ...) \
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drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__)
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#define DRM_DEV_DEBUG_VBL(dev, fmt, args...) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt, \
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##args)
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#define DRM_DEBUG_VBL(fmt, ...) \
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drm_printk(KERN_DEBUG, DRM_UT_VBL, fmt, ##__VA_ARGS__)
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#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...) \
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({ \
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static DEFINE_RATELIMIT_STATE(_rs, \
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DEFAULT_RATELIMIT_INTERVAL, \
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DEFAULT_RATELIMIT_BURST); \
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if (__ratelimit(&_rs)) \
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drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level, \
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__func__, "", fmt, ##args); \
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})
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/**
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* Rate limited debug output. Like DRM_DEBUG() but won't flood the log.
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*
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* \param fmt printf() like format string.
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* \param arg arguments
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*/
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#define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...) \
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DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args)
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#define DRM_DEBUG_RATELIMITED(fmt, args...) \
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DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args)
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#define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...) \
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_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args)
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#define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...) \
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DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args)
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#define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...) \
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_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args)
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#define DRM_DEBUG_KMS_RATELIMITED(fmt, args...) \
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DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args)
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#define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...) \
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_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args)
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#define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...) \
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DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args)
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/*@}*/
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/***********************************************************************/
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/** \name Internal types and structures */
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/*@{*/
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#define DRM_IF_VERSION(maj, min) (maj << 16 | min)
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/**
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* Ioctl function type.
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*
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* \param inode device inode.
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* \param file_priv DRM file private pointer.
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* \param cmd command.
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* \param arg argument.
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*/
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typedef int drm_ioctl_t(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
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unsigned long arg);
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#define DRM_IOCTL_NR(n) _IOC_NR(n)
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#define DRM_MAJOR 226
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#define DRM_AUTH 0x1
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#define DRM_MASTER 0x2
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#define DRM_ROOT_ONLY 0x4
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#define DRM_CONTROL_ALLOW 0x8
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#define DRM_UNLOCKED 0x10
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#define DRM_RENDER_ALLOW 0x20
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struct drm_ioctl_desc {
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unsigned int cmd;
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int flags;
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drm_ioctl_t *func;
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const char *name;
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};
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/**
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* Creates a driver or general drm_ioctl_desc array entry for the given
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* ioctl, for use by drm_ioctl().
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*/
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#define DRM_IOCTL_DEF_DRV(ioctl, _func, _flags) \
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[DRM_IOCTL_NR(DRM_IOCTL_##ioctl) - DRM_COMMAND_BASE] = { \
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.cmd = DRM_IOCTL_##ioctl, \
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.func = _func, \
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.flags = _flags, \
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.name = #ioctl \
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}
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/* Event queued up for userspace to read */
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struct drm_pending_event {
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struct completion *completion;
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struct drm_event *event;
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struct fence *fence;
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struct list_head link;
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struct list_head pending_link;
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struct drm_file *file_priv;
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pid_t pid; /* pid of requester, no guarantee it's valid by the time
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we deliver the event, for tracing only */
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};
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struct drm_prime_file_private {
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struct mutex lock;
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struct rb_root dmabufs;
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struct rb_root handles;
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};
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/** File private data */
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struct drm_file {
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unsigned authenticated :1;
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/* true when the client has asked us to expose stereo 3D mode flags */
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unsigned stereo_allowed :1;
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/*
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* true if client understands CRTC primary planes and cursor planes
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* in the plane list
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*/
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unsigned universal_planes:1;
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/* true if client understands atomic properties */
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unsigned atomic:1;
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/*
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* This client is the creator of @master.
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* Protected by struct drm_device::master_mutex.
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*/
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unsigned is_master:1;
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struct pid *pid;
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drm_magic_t magic;
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struct list_head lhead;
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struct drm_minor *minor;
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unsigned long lock_count;
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/** Mapping of mm object handles to object pointers. */
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struct idr object_idr;
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/** Lock for synchronization of access to object_idr. */
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spinlock_t table_lock;
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struct file *filp;
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void *driver_priv;
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struct drm_master *master; /* master this node is currently associated with
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N.B. not always dev->master */
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/**
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* fbs - List of framebuffers associated with this file.
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*
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* Protected by fbs_lock. Note that the fbs list holds a reference on
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* the fb object to prevent it from untimely disappearing.
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*/
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struct list_head fbs;
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struct mutex fbs_lock;
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/** User-created blob properties; this retains a reference on the
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* property. */
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struct list_head blobs;
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wait_queue_head_t event_wait;
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struct list_head pending_event_list;
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struct list_head event_list;
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int event_space;
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struct mutex event_read_lock;
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struct drm_prime_file_private prime;
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};
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/**
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* Lock data.
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*/
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struct drm_lock_data {
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struct drm_hw_lock *hw_lock; /**< Hardware lock */
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/** Private of lock holder's file (NULL=kernel) */
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struct drm_file *file_priv;
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wait_queue_head_t lock_queue; /**< Queue of blocked processes */
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unsigned long lock_time; /**< Time of last lock in jiffies */
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spinlock_t spinlock;
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uint32_t kernel_waiters;
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uint32_t user_waiters;
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int idle_has_lock;
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};
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/* Flags and return codes for get_vblank_timestamp() driver function. */
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#define DRM_CALLED_FROM_VBLIRQ 1
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#define DRM_VBLANKTIME_SCANOUTPOS_METHOD (1 << 0)
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#define DRM_VBLANKTIME_IN_VBLANK (1 << 1)
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/* get_scanout_position() return flags */
|
|
#define DRM_SCANOUTPOS_VALID (1 << 0)
|
|
#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)
|
|
#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
|
|
|
|
/**
|
|
* DRM driver structure. This structure represent the common code for
|
|
* a family of cards. There will one drm_device for each card present
|
|
* in this family
|
|
*/
|
|
struct drm_driver {
|
|
int (*load) (struct drm_device *, unsigned long flags);
|
|
int (*firstopen) (struct drm_device *);
|
|
int (*open) (struct drm_device *, struct drm_file *);
|
|
void (*preclose) (struct drm_device *, struct drm_file *file_priv);
|
|
void (*postclose) (struct drm_device *, struct drm_file *);
|
|
void (*lastclose) (struct drm_device *);
|
|
int (*unload) (struct drm_device *);
|
|
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 (*set_busid)(struct drm_device *dev, struct drm_master *master);
|
|
|
|
/**
|
|
* get_vblank_counter - get raw hardware vblank counter
|
|
* @dev: DRM device
|
|
* @pipe: counter to fetch
|
|
*
|
|
* Driver callback for fetching a raw hardware vblank counter for @crtc.
|
|
* If a device doesn't have a hardware counter, the driver can simply
|
|
* use drm_vblank_no_hw_counter() function. The DRM core will account for
|
|
* missed vblank events while interrupts where disabled based on system
|
|
* timestamps.
|
|
*
|
|
* Wraparound handling and loss of events due to modesetting is dealt
|
|
* with in the DRM core code.
|
|
*
|
|
* RETURNS
|
|
* Raw vblank counter value.
|
|
*/
|
|
u32 (*get_vblank_counter) (struct drm_device *dev, unsigned int pipe);
|
|
|
|
/**
|
|
* enable_vblank - enable vblank interrupt events
|
|
* @dev: DRM device
|
|
* @pipe: which irq to enable
|
|
*
|
|
* Enable vblank interrupts for @crtc. If the device doesn't have
|
|
* a hardware vblank counter, the driver should use the
|
|
* drm_vblank_no_hw_counter() function that keeps a virtual counter.
|
|
*
|
|
* RETURNS
|
|
* Zero on success, appropriate errno if the given @crtc's vblank
|
|
* interrupt cannot be enabled.
|
|
*/
|
|
int (*enable_vblank) (struct drm_device *dev, unsigned int pipe);
|
|
|
|
/**
|
|
* disable_vblank - disable vblank interrupt events
|
|
* @dev: DRM device
|
|
* @pipe: which irq to enable
|
|
*
|
|
* Disable vblank interrupts for @crtc. If the device doesn't have
|
|
* a hardware vblank counter, the driver should use the
|
|
* drm_vblank_no_hw_counter() function that keeps a virtual counter.
|
|
*/
|
|
void (*disable_vblank) (struct drm_device *dev, unsigned int pipe);
|
|
|
|
/**
|
|
* Called by \c drm_device_is_agp. Typically used to determine if a
|
|
* card is really attached to AGP or not.
|
|
*
|
|
* \param dev DRM device handle
|
|
*
|
|
* \returns
|
|
* One of three values is returned depending on whether or not the
|
|
* card is absolutely \b not AGP (return of 0), absolutely \b is AGP
|
|
* (return of 1), or may or may not be AGP (return of 2).
|
|
*/
|
|
int (*device_is_agp) (struct drm_device *dev);
|
|
|
|
/**
|
|
* Called by vblank timestamping code.
|
|
*
|
|
* Return the current display scanout position from a crtc, and an
|
|
* optional accurate ktime_get timestamp of when position was measured.
|
|
*
|
|
* \param dev DRM device.
|
|
* \param pipe Id of the crtc to query.
|
|
* \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
|
|
* \param *vpos Target location for current vertical scanout position.
|
|
* \param *hpos Target location for current horizontal scanout position.
|
|
* \param *stime Target location for timestamp taken immediately before
|
|
* scanout position query. Can be NULL to skip timestamp.
|
|
* \param *etime Target location for timestamp taken immediately after
|
|
* scanout position query. Can be NULL to skip timestamp.
|
|
* \param mode Current display timings.
|
|
*
|
|
* Returns vpos as a positive number while in active scanout area.
|
|
* Returns vpos as a negative number inside vblank, counting the number
|
|
* of scanlines to go until end of vblank, e.g., -1 means "one scanline
|
|
* until start of active scanout / end of vblank."
|
|
*
|
|
* \return Flags, or'ed together as follows:
|
|
*
|
|
* DRM_SCANOUTPOS_VALID = Query successful.
|
|
* DRM_SCANOUTPOS_INVBL = Inside vblank.
|
|
* DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
|
|
* this flag means that returned position may be offset by a constant
|
|
* but unknown small number of scanlines wrt. real scanout position.
|
|
*
|
|
*/
|
|
int (*get_scanout_position) (struct drm_device *dev, unsigned int pipe,
|
|
unsigned int flags, int *vpos, int *hpos,
|
|
ktime_t *stime, ktime_t *etime,
|
|
const struct drm_display_mode *mode);
|
|
|
|
/**
|
|
* Called by \c drm_get_last_vbltimestamp. Should return a precise
|
|
* timestamp when the most recent VBLANK interval ended or will end.
|
|
*
|
|
* Specifically, the timestamp in @vblank_time should correspond as
|
|
* closely as possible to the time when the first video scanline of
|
|
* the video frame after the end of VBLANK will start scanning out,
|
|
* the time immediately after end of the VBLANK interval. If the
|
|
* @crtc is currently inside VBLANK, this will be a time in the future.
|
|
* If the @crtc is currently scanning out a frame, this will be the
|
|
* past start time of the current scanout. This is meant to adhere
|
|
* to the OpenML OML_sync_control extension specification.
|
|
*
|
|
* \param dev dev DRM device handle.
|
|
* \param pipe crtc for which timestamp should be returned.
|
|
* \param *max_error Maximum allowable timestamp error in nanoseconds.
|
|
* Implementation should strive to provide timestamp
|
|
* with an error of at most *max_error nanoseconds.
|
|
* Returns true upper bound on error for timestamp.
|
|
* \param *vblank_time Target location for returned vblank timestamp.
|
|
* \param flags 0 = Defaults, no special treatment needed.
|
|
* \param DRM_CALLED_FROM_VBLIRQ = Function is called from vblank
|
|
* irq handler. Some drivers need to apply some workarounds
|
|
* for gpu-specific vblank irq quirks if flag is set.
|
|
*
|
|
* \returns
|
|
* Zero if timestamping isn't supported in current display mode or a
|
|
* negative number on failure. A positive status code on success,
|
|
* which describes how the vblank_time timestamp was computed.
|
|
*/
|
|
int (*get_vblank_timestamp) (struct drm_device *dev, unsigned int pipe,
|
|
int *max_error,
|
|
struct timeval *vblank_time,
|
|
unsigned flags);
|
|
|
|
/* these have to be filled in */
|
|
|
|
irqreturn_t(*irq_handler) (int irq, void *arg);
|
|
void (*irq_preinstall) (struct drm_device *dev);
|
|
int (*irq_postinstall) (struct drm_device *dev);
|
|
void (*irq_uninstall) (struct drm_device *dev);
|
|
|
|
/* Master routines */
|
|
int (*master_create)(struct drm_device *dev, struct drm_master *master);
|
|
void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
|
|
/**
|
|
* master_set is called whenever the minor master is set.
|
|
* master_drop is called whenever the minor master is dropped.
|
|
*/
|
|
|
|
int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
|
|
bool from_open);
|
|
void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv);
|
|
|
|
int (*debugfs_init)(struct drm_minor *minor);
|
|
void (*debugfs_cleanup)(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 dev->struct_mutex
|
|
* legacy locking schemes. Use this hook instead of @gem_free_object.
|
|
*/
|
|
void (*gem_free_object_unlocked) (struct drm_gem_object *obj);
|
|
|
|
int (*gem_open_object) (struct drm_gem_object *, struct drm_file *);
|
|
void (*gem_close_object) (struct drm_gem_object *, struct drm_file *);
|
|
|
|
/**
|
|
* 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: */
|
|
/* 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);
|
|
/* 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);
|
|
/* export GEM -> dmabuf */
|
|
struct dma_buf * (*gem_prime_export)(struct drm_device *dev,
|
|
struct drm_gem_object *obj, int flags);
|
|
/* import dmabuf -> GEM */
|
|
struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev,
|
|
struct dma_buf *dma_buf);
|
|
/* low-level interface used by drm_gem_prime_{import,export} */
|
|
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);
|
|
|
|
/* vga arb irq handler */
|
|
void (*vgaarb_irq)(struct drm_device *dev, bool state);
|
|
|
|
/* dumb alloc support */
|
|
int (*dumb_create)(struct drm_file *file_priv,
|
|
struct drm_device *dev,
|
|
struct drm_mode_create_dumb *args);
|
|
int (*dumb_map_offset)(struct drm_file *file_priv,
|
|
struct drm_device *dev, uint32_t handle,
|
|
uint64_t *offset);
|
|
int (*dumb_destroy)(struct drm_file *file_priv,
|
|
struct drm_device *dev,
|
|
uint32_t handle);
|
|
|
|
/* Driver private ops for this object */
|
|
const struct vm_operations_struct *gem_vm_ops;
|
|
|
|
int major;
|
|
int minor;
|
|
int patchlevel;
|
|
char *name;
|
|
char *desc;
|
|
char *date;
|
|
|
|
u32 driver_features;
|
|
int dev_priv_size;
|
|
const struct drm_ioctl_desc *ioctls;
|
|
int num_ioctls;
|
|
const struct file_operations *fops;
|
|
|
|
/* List of devices hanging off this driver with stealth attach. */
|
|
struct list_head legacy_dev_list;
|
|
};
|
|
|
|
enum drm_minor_type {
|
|
DRM_MINOR_PRIMARY,
|
|
DRM_MINOR_CONTROL,
|
|
DRM_MINOR_RENDER,
|
|
DRM_MINOR_CNT,
|
|
};
|
|
|
|
/**
|
|
* Info file list entry. This structure represents a debugfs or proc file to
|
|
* be created by the drm core
|
|
*/
|
|
struct drm_info_list {
|
|
const char *name; /** file name */
|
|
int (*show)(struct seq_file*, void*); /** show callback */
|
|
u32 driver_features; /**< Required driver features for this entry */
|
|
void *data;
|
|
};
|
|
|
|
/**
|
|
* debugfs node structure. This structure represents a debugfs file.
|
|
*/
|
|
struct drm_info_node {
|
|
struct list_head list;
|
|
struct drm_minor *minor;
|
|
const struct drm_info_list *info_ent;
|
|
struct dentry *dent;
|
|
};
|
|
|
|
/**
|
|
* DRM minor structure. This structure represents a drm minor number.
|
|
*/
|
|
struct drm_minor {
|
|
int index; /**< Minor device number */
|
|
int type; /**< Control or render */
|
|
struct device *kdev; /**< Linux device */
|
|
struct drm_device *dev;
|
|
|
|
struct dentry *debugfs_root;
|
|
|
|
struct list_head debugfs_list;
|
|
struct mutex debugfs_lock; /* Protects debugfs_list. */
|
|
};
|
|
|
|
/**
|
|
* DRM device structure. This structure represent a complete card that
|
|
* may contain multiple heads.
|
|
*/
|
|
struct drm_device {
|
|
struct list_head legacy_dev_list;/**< list of devices per driver for stealth attach cleanup */
|
|
int if_version; /**< Highest interface version set */
|
|
|
|
/** \name Lifetime Management */
|
|
/*@{ */
|
|
struct kref ref; /**< Object ref-count */
|
|
struct device *dev; /**< Device structure of bus-device */
|
|
struct drm_driver *driver; /**< DRM driver managing the device */
|
|
void *dev_private; /**< DRM driver private data */
|
|
struct drm_minor *control; /**< Control node */
|
|
struct drm_minor *primary; /**< Primary node */
|
|
struct drm_minor *render; /**< Render node */
|
|
|
|
/* currently active master for this device. Protected by master_mutex */
|
|
struct drm_master *master;
|
|
|
|
atomic_t unplugged; /**< Flag whether dev is dead */
|
|
struct inode *anon_inode; /**< inode for private address-space */
|
|
char *unique; /**< unique name of the device */
|
|
/*@} */
|
|
|
|
/** \name Locks */
|
|
/*@{ */
|
|
struct mutex struct_mutex; /**< For others */
|
|
struct mutex master_mutex; /**< For drm_minor::master and drm_file::is_master */
|
|
/*@} */
|
|
|
|
/** \name Usage Counters */
|
|
/*@{ */
|
|
int open_count; /**< Outstanding files open, protected by drm_global_mutex. */
|
|
spinlock_t buf_lock; /**< For drm_device::buf_use and a few other things. */
|
|
int buf_use; /**< Buffers in use -- cannot alloc */
|
|
atomic_t buf_alloc; /**< Buffer allocation in progress */
|
|
/*@} */
|
|
|
|
struct mutex filelist_mutex;
|
|
struct list_head filelist;
|
|
|
|
/** \name Memory management */
|
|
/*@{ */
|
|
struct list_head maplist; /**< Linked list of regions */
|
|
struct drm_open_hash map_hash; /**< User token hash table for maps */
|
|
|
|
/** \name Context handle management */
|
|
/*@{ */
|
|
struct list_head ctxlist; /**< Linked list of context handles */
|
|
struct mutex ctxlist_mutex; /**< For ctxlist */
|
|
|
|
struct idr ctx_idr;
|
|
|
|
struct list_head vmalist; /**< List of vmas (for debugging) */
|
|
|
|
/*@} */
|
|
|
|
/** \name DMA support */
|
|
/*@{ */
|
|
struct drm_device_dma *dma; /**< Optional pointer for DMA support */
|
|
/*@} */
|
|
|
|
/** \name Context support */
|
|
/*@{ */
|
|
|
|
__volatile__ long context_flag; /**< Context swapping flag */
|
|
int last_context; /**< Last current context */
|
|
/*@} */
|
|
|
|
/** \name VBLANK IRQ support */
|
|
/*@{ */
|
|
bool irq_enabled;
|
|
int irq;
|
|
|
|
/*
|
|
* If true, vblank interrupt will be disabled immediately when the
|
|
* refcount drops to zero, as opposed to via the vblank disable
|
|
* timer.
|
|
* This can be set to true it the hardware has a working vblank
|
|
* counter and the driver uses drm_vblank_on() and drm_vblank_off()
|
|
* appropriately.
|
|
*/
|
|
bool vblank_disable_immediate;
|
|
|
|
/* array of size num_crtcs */
|
|
struct drm_vblank_crtc *vblank;
|
|
|
|
spinlock_t vblank_time_lock; /**< Protects vblank count and time updates during vblank enable/disable */
|
|
spinlock_t vbl_lock;
|
|
|
|
u32 max_vblank_count; /**< size of vblank counter register */
|
|
|
|
/**
|
|
* List of events
|
|
*/
|
|
struct list_head vblank_event_list;
|
|
spinlock_t event_lock;
|
|
|
|
/*@} */
|
|
|
|
struct drm_agp_head *agp; /**< AGP data */
|
|
|
|
struct pci_dev *pdev; /**< PCI device structure */
|
|
#ifdef __alpha__
|
|
struct pci_controller *hose;
|
|
#endif
|
|
|
|
struct platform_device *platformdev; /**< Platform device struture */
|
|
struct virtio_device *virtdev;
|
|
|
|
struct drm_sg_mem *sg; /**< Scatter gather memory */
|
|
unsigned int num_crtcs; /**< Number of CRTCs on this device */
|
|
|
|
struct {
|
|
int context;
|
|
struct drm_hw_lock *lock;
|
|
} sigdata;
|
|
|
|
struct drm_local_map *agp_buffer_map;
|
|
unsigned int agp_buffer_token;
|
|
|
|
struct drm_mode_config mode_config; /**< Current mode config */
|
|
|
|
/** \name GEM information */
|
|
/*@{ */
|
|
struct mutex object_name_lock;
|
|
struct idr object_name_idr;
|
|
struct drm_vma_offset_manager *vma_offset_manager;
|
|
/*@} */
|
|
int switch_power_state;
|
|
};
|
|
|
|
#include <drm/drm_irq.h>
|
|
|
|
#define DRM_SWITCH_POWER_ON 0
|
|
#define DRM_SWITCH_POWER_OFF 1
|
|
#define DRM_SWITCH_POWER_CHANGING 2
|
|
#define DRM_SWITCH_POWER_DYNAMIC_OFF 3
|
|
|
|
static __inline__ int drm_core_check_feature(struct drm_device *dev,
|
|
int feature)
|
|
{
|
|
return ((dev->driver->driver_features & feature) ? 1 : 0);
|
|
}
|
|
|
|
static inline void drm_device_set_unplugged(struct drm_device *dev)
|
|
{
|
|
smp_wmb();
|
|
atomic_set(&dev->unplugged, 1);
|
|
}
|
|
|
|
static inline int drm_device_is_unplugged(struct drm_device *dev)
|
|
{
|
|
int ret = atomic_read(&dev->unplugged);
|
|
smp_rmb();
|
|
return ret;
|
|
}
|
|
|
|
static inline bool drm_is_render_client(const struct drm_file *file_priv)
|
|
{
|
|
return file_priv->minor->type == DRM_MINOR_RENDER;
|
|
}
|
|
|
|
static inline bool drm_is_control_client(const struct drm_file *file_priv)
|
|
{
|
|
return file_priv->minor->type == DRM_MINOR_CONTROL;
|
|
}
|
|
|
|
static inline bool drm_is_primary_client(const struct drm_file *file_priv)
|
|
{
|
|
return file_priv->minor->type == DRM_MINOR_PRIMARY;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/** \name Internal function definitions */
|
|
/*@{*/
|
|
|
|
/* Driver support (drm_drv.h) */
|
|
extern int drm_ioctl_permit(u32 flags, struct drm_file *file_priv);
|
|
extern long drm_ioctl(struct file *filp,
|
|
unsigned int cmd, unsigned long arg);
|
|
extern long drm_compat_ioctl(struct file *filp,
|
|
unsigned int cmd, unsigned long arg);
|
|
extern bool drm_ioctl_flags(unsigned int nr, unsigned int *flags);
|
|
|
|
/* File Operations (drm_fops.c) */
|
|
int drm_open(struct inode *inode, struct file *filp);
|
|
ssize_t drm_read(struct file *filp, char __user *buffer,
|
|
size_t count, loff_t *offset);
|
|
int drm_release(struct inode *inode, struct file *filp);
|
|
unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
|
|
int drm_event_reserve_init_locked(struct drm_device *dev,
|
|
struct drm_file *file_priv,
|
|
struct drm_pending_event *p,
|
|
struct drm_event *e);
|
|
int drm_event_reserve_init(struct drm_device *dev,
|
|
struct drm_file *file_priv,
|
|
struct drm_pending_event *p,
|
|
struct drm_event *e);
|
|
void drm_event_cancel_free(struct drm_device *dev,
|
|
struct drm_pending_event *p);
|
|
void drm_send_event_locked(struct drm_device *dev, struct drm_pending_event *e);
|
|
void drm_send_event(struct drm_device *dev, struct drm_pending_event *e);
|
|
|
|
/* Misc. IOCTL support (drm_ioctl.c) */
|
|
int drm_noop(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv);
|
|
int drm_invalid_op(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv);
|
|
|
|
/* Cache management (drm_cache.c) */
|
|
void drm_clflush_pages(struct page *pages[], unsigned long num_pages);
|
|
void drm_clflush_sg(struct sg_table *st);
|
|
void drm_clflush_virt_range(void *addr, unsigned long length);
|
|
|
|
/*
|
|
* These are exported to drivers so that they can implement fencing using
|
|
* DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
|
|
*/
|
|
|
|
/* Modesetting support */
|
|
extern void drm_vblank_pre_modeset(struct drm_device *dev, unsigned int pipe);
|
|
extern void drm_vblank_post_modeset(struct drm_device *dev, unsigned int pipe);
|
|
|
|
/* drm_drv.c */
|
|
void drm_put_dev(struct drm_device *dev);
|
|
void drm_unplug_dev(struct drm_device *dev);
|
|
extern unsigned int drm_debug;
|
|
|
|
/* Debugfs support */
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
extern int drm_debugfs_create_files(const struct drm_info_list *files,
|
|
int count, struct dentry *root,
|
|
struct drm_minor *minor);
|
|
extern int drm_debugfs_remove_files(const struct drm_info_list *files,
|
|
int count, struct drm_minor *minor);
|
|
#else
|
|
static inline int drm_debugfs_create_files(const struct drm_info_list *files,
|
|
int count, struct dentry *root,
|
|
struct drm_minor *minor)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
|
|
int count, struct drm_minor *minor)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
struct dma_buf_export_info;
|
|
|
|
extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
|
|
struct drm_gem_object *obj,
|
|
int flags);
|
|
extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
|
|
struct drm_file *file_priv, uint32_t handle, uint32_t flags,
|
|
int *prime_fd);
|
|
extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
|
|
struct dma_buf *dma_buf);
|
|
extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
|
|
struct drm_file *file_priv, int prime_fd, uint32_t *handle);
|
|
struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev,
|
|
struct dma_buf_export_info *exp_info);
|
|
extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
|
|
|
|
extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
|
|
dma_addr_t *addrs, int max_pages);
|
|
extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
|
|
extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
|
|
|
|
|
|
extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
|
|
size_t align);
|
|
extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
|
|
|
|
/* sysfs support (drm_sysfs.c) */
|
|
extern void drm_sysfs_hotplug_event(struct drm_device *dev);
|
|
|
|
|
|
struct drm_device *drm_dev_alloc(struct drm_driver *driver,
|
|
struct device *parent);
|
|
int drm_dev_init(struct drm_device *dev,
|
|
struct drm_driver *driver,
|
|
struct device *parent);
|
|
void drm_dev_ref(struct drm_device *dev);
|
|
void drm_dev_unref(struct drm_device *dev);
|
|
int drm_dev_register(struct drm_device *dev, unsigned long flags);
|
|
void drm_dev_unregister(struct drm_device *dev);
|
|
|
|
struct drm_minor *drm_minor_acquire(unsigned int minor_id);
|
|
void drm_minor_release(struct drm_minor *minor);
|
|
|
|
/*@}*/
|
|
|
|
/* PCI section */
|
|
static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
|
|
{
|
|
if (dev->driver->device_is_agp != NULL) {
|
|
int err = (*dev->driver->device_is_agp) (dev);
|
|
|
|
if (err != 2) {
|
|
return err;
|
|
}
|
|
}
|
|
|
|
return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
|
|
}
|
|
void drm_pci_agp_destroy(struct drm_device *dev);
|
|
|
|
extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
|
|
extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
|
|
#ifdef CONFIG_PCI
|
|
extern int drm_get_pci_dev(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent,
|
|
struct drm_driver *driver);
|
|
extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
|
|
#else
|
|
static inline int drm_get_pci_dev(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent,
|
|
struct drm_driver *driver)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
static inline int drm_pci_set_busid(struct drm_device *dev,
|
|
struct drm_master *master)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
#endif
|
|
|
|
#define DRM_PCIE_SPEED_25 1
|
|
#define DRM_PCIE_SPEED_50 2
|
|
#define DRM_PCIE_SPEED_80 4
|
|
|
|
extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
|
|
extern int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw);
|
|
|
|
/* platform section */
|
|
extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
|
|
|
|
/* returns true if currently okay to sleep */
|
|
static __inline__ bool drm_can_sleep(void)
|
|
{
|
|
if (in_atomic() || in_dbg_master() || irqs_disabled())
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
/* helper for handling conditionals in various for_each macros */
|
|
#define for_each_if(condition) if (!(condition)) {} else
|
|
|
|
#endif
|