cregit-Linux how code gets into the kernel

Release 4.14 include/drm/drmP.h

Directory: include/drm
/*
 * Internal Header for the Direct Rendering Manager
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * Copyright (c) 2009-2010, Code Aurora Forum.
 * All rights reserved.
 *
 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
 * Author: Gareth Hughes <gareth@valinux.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef _DRM_P_H_

#define _DRM_P_H_

#include <linux/agp_backend.h>
#include <linux/cdev.h>
#include <linux/dma-mapping.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/highmem.h>
#include <linux/idr.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/miscdevice.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/poll.h>
#include <linux/ratelimit.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
#include <linux/dma-fence.h>
#include <linux/module.h>

#include <asm/mman.h>
#include <asm/pgalloc.h>
#include <linux/uaccess.h>

#include <uapi/drm/drm.h>
#include <uapi/drm/drm_mode.h>

#include <drm/drm_agpsupport.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_global.h>
#include <drm/drm_hashtab.h>
#include <drm/drm_mm.h>
#include <drm/drm_os_linux.h>
#include <drm/drm_sarea.h>
#include <drm/drm_drv.h>
#include <drm/drm_prime.h>
#include <drm/drm_pci.h>
#include <drm/drm_file.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_sysfs.h>
#include <drm/drm_vblank.h>
#include <drm/drm_irq.h>
#include <drm/drm_device.h>

struct module;

struct device_node;
struct videomode;
struct reservation_object;
struct dma_buf_attachment;

struct pci_dev;
struct pci_controller;

/*
 * The following categories are defined:
 *
 * CORE: Used in the generic drm code: drm_ioctl.c, drm_mm.c, drm_memory.c, ...
 *       This is the category used by the DRM_DEBUG() macro.
 *
 * DRIVER: Used in the vendor specific part of the driver: i915, radeon, ...
 *         This is the category used by the DRM_DEBUG_DRIVER() macro.
 *
 * KMS: used in the modesetting code.
 *      This is the category used by the DRM_DEBUG_KMS() macro.
 *
 * PRIME: used in the prime code.
 *        This is the category used by the DRM_DEBUG_PRIME() macro.
 *
 * ATOMIC: used in the atomic code.
 *        This is the category used by the DRM_DEBUG_ATOMIC() macro.
 *
 * VBL: used for verbose debug message in the vblank code
 *        This is the category used by the DRM_DEBUG_VBL() macro.
 *
 * Enabling verbose debug messages is done through the drm.debug parameter,
 * each category being enabled by a bit.
 *
 * drm.debug=0x1 will enable CORE messages
 * drm.debug=0x2 will enable DRIVER messages
 * drm.debug=0x3 will enable CORE and DRIVER messages
 * ...
 * drm.debug=0x3f will enable all messages
 *
 * An interesting feature is that it's possible to enable verbose logging at
 * run-time by echoing the debug value in its sysfs node:
 *   # echo 0xf > /sys/module/drm/parameters/debug
 */

#define DRM_UT_NONE		0x00

#define DRM_UT_CORE 		0x01

#define DRM_UT_DRIVER		0x02

#define DRM_UT_KMS		0x04

#define DRM_UT_PRIME		0x08

#define DRM_UT_ATOMIC		0x10

#define DRM_UT_VBL		0x20

#define DRM_UT_STATE		0x40

/***********************************************************************/
/** \name DRM template customization defaults */
/*@{*/

/***********************************************************************/
/** \name Macros to make printk easier */
/*@{*/


#define _DRM_PRINTK(once, level, fmt, ...)				\
	do {                                                            \
                printk##once(KERN_##level "[" DRM_NAME "] " fmt,        \
                             ##__VA_ARGS__);                            \
        } while (0)


#define DRM_INFO(fmt, ...)						\
	_DRM_PRINTK(, INFO, fmt, ##__VA_ARGS__)

#define DRM_NOTE(fmt, ...)						\
	_DRM_PRINTK(, NOTICE, fmt, ##__VA_ARGS__)

#define DRM_WARN(fmt, ...)						\
	_DRM_PRINTK(, WARNING, fmt, ##__VA_ARGS__)


#define DRM_INFO_ONCE(fmt, ...)						\
	_DRM_PRINTK(_once, INFO, fmt, ##__VA_ARGS__)

#define DRM_NOTE_ONCE(fmt, ...)						\
	_DRM_PRINTK(_once, NOTICE, fmt, ##__VA_ARGS__)

#define DRM_WARN_ONCE(fmt, ...)						\
	_DRM_PRINTK(_once, WARNING, fmt, ##__VA_ARGS__)

/**
 * Error output.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */

#define DRM_DEV_ERROR(dev, fmt, ...)					\
	drm_dev_printk(dev, KERN_ERR, DRM_UT_NONE, __func__, " *ERROR*",\
                       fmt, ##__VA_ARGS__)

#define DRM_ERROR(fmt, ...)						\
	drm_printk(KERN_ERR, DRM_UT_NONE, fmt,  ##__VA_ARGS__)

/**
 * Rate limited error output.  Like DRM_ERROR() but won't flood the log.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */

#define DRM_DEV_ERROR_RATELIMITED(dev, fmt, ...)			\
({                                                                      \
        static DEFINE_RATELIMIT_STATE(_rs,                              \
                                      DEFAULT_RATELIMIT_INTERVAL,       \
                                      DEFAULT_RATELIMIT_BURST);         \
                                                                        \
        if (__ratelimit(&_rs))                                          \
                DRM_DEV_ERROR(dev, fmt, ##__VA_ARGS__);                 \
})

#define DRM_ERROR_RATELIMITED(fmt, ...)					\
	DRM_DEV_ERROR_RATELIMITED(NULL, fmt, ##__VA_ARGS__)


#define DRM_DEV_INFO(dev, fmt, ...)					\
	drm_dev_printk(dev, KERN_INFO, DRM_UT_NONE, __func__, "", fmt,  \
                       ##__VA_ARGS__)


#define DRM_DEV_INFO_ONCE(dev, fmt, ...)				\
({                                                                      \
        static bool __print_once __read_mostly;                         \
        if (!__print_once) {                                            \
                __print_once = true;                                    \
                DRM_DEV_INFO(dev, fmt, ##__VA_ARGS__);                  \
        }                                                               \
})

/**
 * Debug output.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */

#define DRM_DEV_DEBUG(dev, fmt, args...)				\
	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_CORE, __func__, "", fmt, \
                       ##args)

#define DRM_DEBUG(fmt, ...)						\
	drm_printk(KERN_DEBUG, DRM_UT_CORE, fmt, ##__VA_ARGS__)


#define DRM_DEV_DEBUG_DRIVER(dev, fmt, args...)				\
	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_DRIVER, __func__, "",    \
                       fmt, ##args)

#define DRM_DEBUG_DRIVER(fmt, ...)					\
	drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)


#define DRM_DEV_DEBUG_KMS(dev, fmt, args...)				\
	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_KMS, __func__, "", fmt,  \
                       ##args)

#define DRM_DEBUG_KMS(fmt, ...)					\
	drm_printk(KERN_DEBUG, DRM_UT_KMS, fmt, ##__VA_ARGS__)


#define DRM_DEV_DEBUG_PRIME(dev, fmt, args...)				\
	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_PRIME, __func__, "",     \
                       fmt, ##args)

#define DRM_DEBUG_PRIME(fmt, ...)					\
	drm_printk(KERN_DEBUG, DRM_UT_PRIME, fmt, ##__VA_ARGS__)


#define DRM_DEV_DEBUG_ATOMIC(dev, fmt, args...)				\
	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ATOMIC, __func__, "",    \
                       fmt, ##args)

#define DRM_DEBUG_ATOMIC(fmt, ...)					\
	drm_printk(KERN_DEBUG, DRM_UT_ATOMIC, fmt, ##__VA_ARGS__)


#define DRM_DEV_DEBUG_VBL(dev, fmt, args...)				\
	drm_dev_printk(dev, KERN_DEBUG, DRM_UT_VBL, __func__, "", fmt,  \
                       ##args)

#define DRM_DEBUG_VBL(fmt, ...)					\
	drm_printk(KERN_DEBUG, DRM_UT_VBL, fmt, ##__VA_ARGS__)


#define _DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, level, fmt, args...)	\
({                                                                      \
        static DEFINE_RATELIMIT_STATE(_rs,                              \
                                      DEFAULT_RATELIMIT_INTERVAL,       \
                                      DEFAULT_RATELIMIT_BURST);         \
        if (__ratelimit(&_rs))                                          \
                drm_dev_printk(dev, KERN_DEBUG, DRM_UT_ ## level,       \
                               __func__, "", fmt, ##args);              \
})

/**
 * Rate limited debug output. Like DRM_DEBUG() but won't flood the log.
 *
 * \param fmt printf() like format string.
 * \param arg arguments
 */

#define DRM_DEV_DEBUG_RATELIMITED(dev, fmt, args...)			\
	DEV__DRM_DEFINE_DEBUG_RATELIMITED(dev, CORE, fmt, ##args)

#define DRM_DEBUG_RATELIMITED(fmt, args...)				\
	DRM_DEV_DEBUG_RATELIMITED(NULL, fmt, ##args)

#define DRM_DEV_DEBUG_DRIVER_RATELIMITED(dev, fmt, args...)		\
	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, DRIVER, fmt, ##args)

#define DRM_DEBUG_DRIVER_RATELIMITED(fmt, args...)			\
	DRM_DEV_DEBUG_DRIVER_RATELIMITED(NULL, fmt, ##args)

#define DRM_DEV_DEBUG_KMS_RATELIMITED(dev, fmt, args...)		\
	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, KMS, fmt, ##args)

#define DRM_DEBUG_KMS_RATELIMITED(fmt, args...)				\
	DRM_DEV_DEBUG_KMS_RATELIMITED(NULL, fmt, ##args)

#define DRM_DEV_DEBUG_PRIME_RATELIMITED(dev, fmt, args...)		\
	_DRM_DEV_DEFINE_DEBUG_RATELIMITED(dev, PRIME, fmt, ##args)

#define DRM_DEBUG_PRIME_RATELIMITED(fmt, args...)			\
	DRM_DEV_DEBUG_PRIME_RATELIMITED(NULL, fmt, ##args)

/* Format strings and argument splitters to simplify printing
 * various "complex" objects
 */

/*@}*/

/***********************************************************************/
/** \name Internal types and structures */
/*@{*/


#define DRM_IF_VERSION(maj, min) (maj << 16 | min)


/**
 * drm_drv_uses_atomic_modeset - check if the driver implements
 * atomic_commit()
 * @dev: DRM device
 *
 * This check is useful if drivers do not have DRIVER_ATOMIC set but
 * have atomic modesetting internally implemented.
 */

static inline bool drm_drv_uses_atomic_modeset(struct drm_device *dev) { return dev->mode_config.funcs->atomic_commit != NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Dhinakaran Pandiyan23100.00%1100.00%
Total23100.00%1100.00%

#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); }

Contributors

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Dave Airlie32100.00%3100.00%
Total32100.00%3100.00%

/******************************************************************/ /** \name Internal function definitions */ /*@{*/ /* Driver support (drm_drv.h) */ /* * These are exported to drivers so that they can implement fencing using * DMA quiscent + idle. DMA quiescent usually requires the hardware lock. */ /*@}*/ /* 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; }

Contributors

PersonTokensPropCommitsCommitProp
Dave Airlie26100.00%1100.00%
Total26100.00%1100.00%

/* helper for handling conditionals in various for_each macros */ #define for_each_if(condition) if (!(condition)) {} else #endif

Overall Contributors

PersonTokensPropCommitsCommitProp
Sean Paul19125.99%11.52%
Dave Airlie10814.69%1421.21%
Linus Torvalds (pre-git)7510.20%69.09%
Daniel Vetter547.35%1116.67%
Stephen Chandler Paul527.07%11.52%
David Herrmann516.94%57.58%
Dave Gordon415.58%11.52%
Yakui Zhao304.08%11.52%
Rob Clark263.54%34.55%
Dhinakaran Pandiyan243.27%11.52%
Linus Torvalds182.45%34.55%
Jani Nikula172.31%23.03%
Ville Syrjälä131.77%11.52%
Joe Perches81.09%23.03%
Maarten Lankhorst60.82%23.03%
Steffen Trumtrar50.68%23.03%
Laurent Pinchart30.41%11.52%
David Howells20.27%11.52%
Jordan Crouse20.27%11.52%
Gustavo Fernando Padovan20.27%11.52%
Tejun Heo20.27%11.52%
Ingo Molnar10.14%11.52%
Rusty Russell10.14%11.52%
Thomas Hellstrom10.14%11.52%
Robert Foss10.14%11.52%
Chris Wilson10.14%11.52%
Total735100.00%66100.00%
Directory: include/drm
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