348 lines
11 KiB
C
348 lines
11 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/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 <linux/dma-fence.h>
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#include <linux/module.h>
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#include <asm/mman.h>
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#include <asm/pgalloc.h>
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#include <linux/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_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_drv.h>
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#include <drm/drm_prime.h>
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#include <drm/drm_pci.h>
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#include <drm/drm_file.h>
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#include <drm/drm_debugfs.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_sysfs.h>
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#include <drm/drm_vblank.h>
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#include <drm/drm_irq.h>
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#include <drm/drm_device.h>
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struct module;
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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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struct pci_dev;
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struct pci_controller;
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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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#define DRM_UT_STATE 0x40
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/***********************************************************************/
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/** \name DRM template customization defaults */
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/*@{*/
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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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/* Format strings and argument splitters to simplify printing
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* various "complex" objects
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*/
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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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* drm_drv_uses_atomic_modeset - check if the driver implements
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* atomic_commit()
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* @dev: DRM device
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*
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* This check is useful if drivers do not have DRIVER_ATOMIC set but
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* have atomic modesetting internally implemented.
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*/
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static inline bool drm_drv_uses_atomic_modeset(struct drm_device *dev)
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{
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return dev->mode_config.funcs->atomic_commit != NULL;
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}
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#define DRM_SWITCH_POWER_ON 0
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#define DRM_SWITCH_POWER_OFF 1
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#define DRM_SWITCH_POWER_CHANGING 2
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#define DRM_SWITCH_POWER_DYNAMIC_OFF 3
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static __inline__ int drm_core_check_feature(struct drm_device *dev,
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int feature)
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{
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return ((dev->driver->driver_features & feature) ? 1 : 0);
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}
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/******************************************************************/
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/** \name Internal function definitions */
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/*@{*/
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/* Driver support (drm_drv.h) */
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/*
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* These are exported to drivers so that they can implement fencing using
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* DMA quiscent + idle. DMA quiescent usually requires the hardware lock.
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*/
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/*@}*/
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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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/* helper for handling conditionals in various for_each macros */
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#define for_each_if(condition) if (!(condition)) {} else
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#endif
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