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066626d5d5
Improve the readability and keeps the lines shorter than 80 columns. Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
1092 lines
35 KiB
C
1092 lines
35 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/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 <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_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 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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* 4 debug 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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* 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=0xf 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_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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extern __printf(2, 3)
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void drm_ut_debug_printk(const char *function_name,
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const char *format, ...);
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extern __printf(1, 2)
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void drm_err(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_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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/***********************************************************************/
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/** \name Macros to make printk easier */
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/*@{*/
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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_ERROR(fmt, ...) \
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drm_err(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_ERROR_RATELIMITED(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_err(fmt, ##__VA_ARGS__); \
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})
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#define DRM_INFO(fmt, ...) \
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printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
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#define DRM_INFO_ONCE(fmt, ...) \
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printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)
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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_DEBUG(fmt, args...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_CORE)) \
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drm_ut_debug_printk(__func__, fmt, ##args); \
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} while (0)
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#define DRM_DEBUG_DRIVER(fmt, args...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_DRIVER)) \
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drm_ut_debug_printk(__func__, fmt, ##args); \
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} while (0)
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#define DRM_DEBUG_KMS(fmt, args...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_KMS)) \
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drm_ut_debug_printk(__func__, fmt, ##args); \
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} while (0)
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#define DRM_DEBUG_PRIME(fmt, args...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_PRIME)) \
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drm_ut_debug_printk(__func__, fmt, ##args); \
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} while (0)
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#define DRM_DEBUG_ATOMIC(fmt, args...) \
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do { \
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if (unlikely(drm_debug & DRM_UT_ATOMIC)) \
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drm_ut_debug_printk(__func__, fmt, ##args); \
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} while (0)
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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 drm_event *event;
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struct list_head 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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void (*destroy)(struct drm_pending_event *event);
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};
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/* initial implementaton using a linked list - todo hashtab */
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struct drm_prime_file_private {
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struct list_head head;
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struct mutex lock;
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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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/* Whether we're master for a minor. Protected by master_mutex */
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unsigned is_master :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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struct pid *pid;
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kuid_t uid;
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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 minor->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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wait_queue_head_t event_wait;
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struct list_head event_list;
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int event_space;
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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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/**
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* struct drm_master - drm master structure
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*
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* @refcount: Refcount for this master object.
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* @minor: Link back to minor char device we are master for. Immutable.
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* @unique: Unique identifier: e.g. busid. Protected by drm_global_mutex.
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* @unique_len: Length of unique field. Protected by drm_global_mutex.
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* @magiclist: Hash of used authentication tokens. Protected by struct_mutex.
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* @magicfree: List of used authentication tokens. Protected by struct_mutex.
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* @lock: DRI lock information.
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* @driver_priv: Pointer to driver-private information.
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*/
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struct drm_master {
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struct kref refcount;
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struct drm_minor *minor;
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char *unique;
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int unique_len;
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struct drm_open_hash magiclist;
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struct list_head magicfree;
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struct drm_lock_data lock;
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void *driver_priv;
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};
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/* Size of ringbuffer for vblank timestamps. Just double-buffer
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* in initial implementation.
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*/
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#define DRM_VBLANKTIME_RBSIZE 2
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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 */
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#define DRM_SCANOUTPOS_VALID (1 << 0)
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#define DRM_SCANOUTPOS_IN_VBLANK (1 << 1)
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#define DRM_SCANOUTPOS_ACCURATE (1 << 2)
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/**
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* DRM driver structure. This structure represent the common code for
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* a family of cards. There will one drm_device for each card present
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* in this family
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*/
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struct drm_driver {
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int (*load) (struct drm_device *, unsigned long flags);
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int (*firstopen) (struct drm_device *);
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int (*open) (struct drm_device *, struct drm_file *);
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void (*preclose) (struct drm_device *, struct drm_file *file_priv);
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void (*postclose) (struct drm_device *, struct drm_file *);
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void (*lastclose) (struct drm_device *);
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int (*unload) (struct drm_device *);
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int (*suspend) (struct drm_device *, pm_message_t state);
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int (*resume) (struct drm_device *);
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int (*dma_ioctl) (struct drm_device *dev, void *data, struct drm_file *file_priv);
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int (*dma_quiescent) (struct drm_device *);
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int (*context_dtor) (struct drm_device *dev, int context);
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int (*set_busid)(struct drm_device *dev, struct drm_master *master);
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/**
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* get_vblank_counter - get raw hardware vblank counter
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* @dev: DRM device
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* @crtc: counter to fetch
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*
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* Driver callback for fetching a raw hardware vblank counter for @crtc.
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* If a device doesn't have a hardware counter, the driver can simply
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* return the value of drm_vblank_count. The DRM core will account for
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* missed vblank events while interrupts where disabled based on system
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* 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.
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*
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* RETURNS
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* Raw vblank counter value.
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*/
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u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);
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/**
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* enable_vblank - enable vblank interrupt events
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* @dev: DRM device
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* @crtc: which irq to enable
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*
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* Enable vblank interrupts for @crtc. If the device doesn't have
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* a hardware vblank counter, this routine should be a no-op, since
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* interrupts will have to stay on to keep the count accurate.
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*
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* RETURNS
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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, int crtc);
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/**
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* disable_vblank - disable vblank interrupt events
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* @dev: DRM device
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* @crtc: which irq to enable
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*
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* Disable vblank interrupts for @crtc. If the device doesn't have
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* a hardware vblank counter, this routine should be a no-op, since
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* interrupts will have to stay on to keep the count accurate.
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*/
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void (*disable_vblank) (struct drm_device *dev, int crtc);
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/**
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* Called by \c drm_device_is_agp. Typically used to determine if a
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* card is really attached to AGP or not.
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*
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* \param dev DRM device handle
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*
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* \returns
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* One of three values is returned depending on whether or not the
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* card is absolutely \b not AGP (return of 0), absolutely \b is AGP
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* (return of 1), or may or may not be AGP (return of 2).
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*/
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int (*device_is_agp) (struct drm_device *dev);
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/**
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* Called by vblank timestamping code.
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*
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* Return the current display scanout position from a crtc, and an
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* optional accurate ktime_get timestamp of when position was measured.
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*
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* \param dev DRM device.
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* \param crtc Id of the crtc to query.
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* \param flags Flags from the caller (DRM_CALLED_FROM_VBLIRQ or 0).
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* \param *vpos Target location for current vertical scanout position.
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* \param *hpos Target location for current horizontal scanout position.
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* \param *stime Target location for timestamp taken immediately before
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* scanout position query. Can be NULL to skip timestamp.
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* \param *etime Target location for timestamp taken immediately after
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* scanout position query. Can be NULL to skip timestamp.
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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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* \return Flags, or'ed together as follows:
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*
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* 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, int crtc,
|
|
unsigned int flags,
|
|
int *vpos, int *hpos, ktime_t *stime,
|
|
ktime_t *etime);
|
|
|
|
/**
|
|
* 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 crtc 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, int crtc,
|
|
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,
|
|
bool from_release);
|
|
|
|
int (*debugfs_init)(struct drm_minor *minor);
|
|
void (*debugfs_cleanup)(struct drm_minor *minor);
|
|
|
|
/**
|
|
* Driver-specific constructor for drm_gem_objects, to set up
|
|
* obj->driver_private.
|
|
*
|
|
* Returns 0 on success.
|
|
*/
|
|
void (*gem_free_object) (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 *);
|
|
|
|
/* 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_LEGACY,
|
|
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. */
|
|
|
|
/* currently active master for this node. Protected by master_mutex */
|
|
struct drm_master *master;
|
|
struct drm_mode_group mode_group;
|
|
};
|
|
|
|
|
|
struct drm_pending_vblank_event {
|
|
struct drm_pending_event base;
|
|
int pipe;
|
|
struct drm_event_vblank event;
|
|
};
|
|
|
|
struct drm_vblank_crtc {
|
|
struct drm_device *dev; /* pointer to the drm_device */
|
|
wait_queue_head_t queue; /**< VBLANK wait queue */
|
|
struct timeval time[DRM_VBLANKTIME_RBSIZE]; /**< timestamp of current count */
|
|
struct timer_list disable_timer; /* delayed disable timer */
|
|
atomic_t count; /**< number of VBLANK interrupts */
|
|
atomic_t refcount; /* number of users of vblank interruptsper crtc */
|
|
u32 last; /* protected by dev->vbl_lock, used */
|
|
/* for wraparound handling */
|
|
u32 last_wait; /* Last vblank seqno waited per CRTC */
|
|
unsigned int inmodeset; /* Display driver is setting mode */
|
|
int crtc; /* crtc index */
|
|
bool enabled; /* so we don't call enable more than
|
|
once per disable */
|
|
};
|
|
|
|
/**
|
|
* 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 */
|
|
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 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;
|
|
|
|
/*
|
|
* At load time, disabling the vblank interrupt won't be allowed since
|
|
* old clients may not call the modeset ioctl and therefore misbehave.
|
|
* Once the modeset ioctl *has* been called though, we can safely
|
|
* disable them when unused.
|
|
*/
|
|
bool vblank_disable_allowed;
|
|
|
|
/*
|
|
* 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 drm_sg_mem *sg; /**< Scatter gather memory */
|
|
unsigned int num_crtcs; /**< Number of CRTCs on this device */
|
|
sigset_t sigmask;
|
|
|
|
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;
|
|
};
|
|
|
|
#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_LEGACY;
|
|
}
|
|
|
|
/******************************************************************/
|
|
/** \name Internal function definitions */
|
|
/*@{*/
|
|
|
|
/* Driver support (drm_drv.h) */
|
|
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);
|
|
|
|
/* Device support (drm_fops.h) */
|
|
extern int drm_open(struct inode *inode, struct file *filp);
|
|
extern ssize_t drm_read(struct file *filp, char __user *buffer,
|
|
size_t count, loff_t *offset);
|
|
extern int drm_release(struct inode *inode, struct file *filp);
|
|
|
|
/* Mapping support (drm_vm.h) */
|
|
extern unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
|
|
|
|
/* Misc. IOCTL support (drm_ioctl.c) */
|
|
int drm_noop(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.
|
|
*/
|
|
|
|
/* IRQ support (drm_irq.h) */
|
|
extern int drm_irq_install(struct drm_device *dev, int irq);
|
|
extern int drm_irq_uninstall(struct drm_device *dev);
|
|
|
|
extern int drm_vblank_init(struct drm_device *dev, int num_crtcs);
|
|
extern int drm_wait_vblank(struct drm_device *dev, void *data,
|
|
struct drm_file *filp);
|
|
extern u32 drm_vblank_count(struct drm_device *dev, int crtc);
|
|
extern u32 drm_crtc_vblank_count(struct drm_crtc *crtc);
|
|
extern u32 drm_vblank_count_and_time(struct drm_device *dev, int crtc,
|
|
struct timeval *vblanktime);
|
|
extern void drm_send_vblank_event(struct drm_device *dev, int crtc,
|
|
struct drm_pending_vblank_event *e);
|
|
extern void drm_crtc_send_vblank_event(struct drm_crtc *crtc,
|
|
struct drm_pending_vblank_event *e);
|
|
extern bool drm_handle_vblank(struct drm_device *dev, int crtc);
|
|
extern bool drm_crtc_handle_vblank(struct drm_crtc *crtc);
|
|
extern int drm_vblank_get(struct drm_device *dev, int crtc);
|
|
extern void drm_vblank_put(struct drm_device *dev, int crtc);
|
|
extern int drm_crtc_vblank_get(struct drm_crtc *crtc);
|
|
extern void drm_crtc_vblank_put(struct drm_crtc *crtc);
|
|
extern void drm_wait_one_vblank(struct drm_device *dev, int crtc);
|
|
extern void drm_crtc_wait_one_vblank(struct drm_crtc *crtc);
|
|
extern void drm_vblank_off(struct drm_device *dev, int crtc);
|
|
extern void drm_vblank_on(struct drm_device *dev, int crtc);
|
|
extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
|
|
extern void drm_crtc_vblank_reset(struct drm_crtc *crtc);
|
|
extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
|
|
extern void drm_vblank_cleanup(struct drm_device *dev);
|
|
|
|
extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
|
|
int crtc, int *max_error,
|
|
struct timeval *vblank_time,
|
|
unsigned flags,
|
|
const struct drm_crtc *refcrtc,
|
|
const struct drm_display_mode *mode);
|
|
extern void drm_calc_timestamping_constants(struct drm_crtc *crtc,
|
|
const struct drm_display_mode *mode);
|
|
|
|
/**
|
|
* drm_crtc_vblank_waitqueue - get vblank waitqueue for the CRTC
|
|
* @crtc: which CRTC's vblank waitqueue to retrieve
|
|
*
|
|
* This function returns a pointer to the vblank waitqueue for the CRTC.
|
|
* Drivers can use this to implement vblank waits using wait_event() & co.
|
|
*/
|
|
static inline wait_queue_head_t *drm_crtc_vblank_waitqueue(struct drm_crtc *crtc)
|
|
{
|
|
return &crtc->dev->vblank[drm_crtc_index(crtc)].queue;
|
|
}
|
|
|
|
/* Modesetting support */
|
|
extern void drm_vblank_pre_modeset(struct drm_device *dev, int crtc);
|
|
extern void drm_vblank_post_modeset(struct drm_device *dev, int crtc);
|
|
|
|
/* Stub support (drm_stub.h) */
|
|
extern struct drm_master *drm_master_get(struct drm_master *master);
|
|
extern void drm_master_put(struct drm_master **master);
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extern void drm_put_dev(struct drm_device *dev);
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extern void drm_unplug_dev(struct drm_device *dev);
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extern unsigned int drm_debug;
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extern bool drm_atomic;
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/* Debugfs support */
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#if defined(CONFIG_DEBUG_FS)
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extern int drm_debugfs_create_files(const struct drm_info_list *files,
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int count, struct dentry *root,
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struct drm_minor *minor);
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extern int drm_debugfs_remove_files(const struct drm_info_list *files,
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int count, struct drm_minor *minor);
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#else
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static inline int drm_debugfs_create_files(const struct drm_info_list *files,
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int count, struct dentry *root,
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struct drm_minor *minor)
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{
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return 0;
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}
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static inline int drm_debugfs_remove_files(const struct drm_info_list *files,
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int count, struct drm_minor *minor)
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{
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return 0;
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}
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#endif
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extern struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
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struct drm_gem_object *obj, int flags);
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extern int drm_gem_prime_handle_to_fd(struct drm_device *dev,
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struct drm_file *file_priv, uint32_t handle, uint32_t flags,
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int *prime_fd);
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extern struct drm_gem_object *drm_gem_prime_import(struct drm_device *dev,
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struct dma_buf *dma_buf);
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extern int drm_gem_prime_fd_to_handle(struct drm_device *dev,
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struct drm_file *file_priv, int prime_fd, uint32_t *handle);
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extern void drm_gem_dmabuf_release(struct dma_buf *dma_buf);
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extern int drm_prime_sg_to_page_addr_arrays(struct sg_table *sgt, struct page **pages,
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dma_addr_t *addrs, int max_pages);
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extern struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages);
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extern void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg);
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extern struct drm_dma_handle *drm_pci_alloc(struct drm_device *dev, size_t size,
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size_t align);
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extern void drm_pci_free(struct drm_device *dev, struct drm_dma_handle * dmah);
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/* sysfs support (drm_sysfs.c) */
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extern void drm_sysfs_hotplug_event(struct drm_device *dev);
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struct drm_device *drm_dev_alloc(struct drm_driver *driver,
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struct device *parent);
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void drm_dev_ref(struct drm_device *dev);
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void drm_dev_unref(struct drm_device *dev);
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int drm_dev_register(struct drm_device *dev, unsigned long flags);
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void drm_dev_unregister(struct drm_device *dev);
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int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...);
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struct drm_minor *drm_minor_acquire(unsigned int minor_id);
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void drm_minor_release(struct drm_minor *minor);
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/*@}*/
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/* PCI section */
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static __inline__ int drm_pci_device_is_agp(struct drm_device *dev)
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{
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if (dev->driver->device_is_agp != NULL) {
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int err = (*dev->driver->device_is_agp) (dev);
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if (err != 2) {
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return err;
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}
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}
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return pci_find_capability(dev->pdev, PCI_CAP_ID_AGP);
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}
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void drm_pci_agp_destroy(struct drm_device *dev);
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extern int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver);
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extern void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver);
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#ifdef CONFIG_PCI
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extern int drm_get_pci_dev(struct pci_dev *pdev,
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const struct pci_device_id *ent,
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struct drm_driver *driver);
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extern int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master);
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#else
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static inline int drm_get_pci_dev(struct pci_dev *pdev,
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const struct pci_device_id *ent,
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struct drm_driver *driver)
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{
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return -ENOSYS;
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}
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static inline int drm_pci_set_busid(struct drm_device *dev,
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struct drm_master *master)
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{
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return -ENOSYS;
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}
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#endif
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#define DRM_PCIE_SPEED_25 1
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#define DRM_PCIE_SPEED_50 2
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#define DRM_PCIE_SPEED_80 4
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extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
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/* platform section */
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extern int drm_platform_init(struct drm_driver *driver, struct platform_device *platform_device);
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extern int drm_platform_set_busid(struct drm_device *d, struct drm_master *m);
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/* returns true if currently okay to sleep */
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static __inline__ bool drm_can_sleep(void)
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{
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if (in_atomic() || in_dbg_master() || irqs_disabled())
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return false;
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return true;
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}
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#endif
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