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/*

 * 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 

 * Author: Gareth Hughes 

 *

 * 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_

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struct module;

struct drm_file;

struct drm_device;

struct drm_agp_head;

struct drm_local_map;

struct drm_device_dma;

struct drm_dma_handle;

struct drm_gem_object;

struct device_node;

struct videomode;

struct reservation_object;

struct dma_buf_attachment;

struct inode;

struct poll_table_struct;

struct sg_table;

#define KHZ2PICOS(a) (1000000000UL/(a))

/*

 * 4 debug 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_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

extern __printf(2, 3)

void drm_ut_debug_printk(const char *function_name,

			 const char *format, ...);

extern __printf(1, 2)

void drm_err(const char *format, ...);

/***********************************************************************/

/** \name DRM template customization defaults */

/*@{*/

/* driver capabilities and requirements mask */

#define DRIVER_USE_AGP			0x1

#define DRIVER_PCI_DMA			0x8

#define DRIVER_SG			0x10

#define DRIVER_HAVE_DMA			0x20

#define DRIVER_HAVE_IRQ			0x40

#define DRIVER_IRQ_SHARED		0x80

#define DRIVER_GEM			0x1000

#define DRIVER_MODESET			0x2000

#define DRIVER_PRIME			0x4000

#define DRIVER_RENDER			0x8000

#define DRIVER_ATOMIC			0x10000

#define DRIVER_KMS_LEGACY_CONTEXT	0x20000

/***********************************************************************/

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

/*@{*/

/**

 * Error output.

 *

 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_ERROR(fmt, ...)				\

    printk("DRM Error " 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_ERROR_RATELIMITED(fmt, ...)				\

({									\

	static DEFINE_RATELIMIT_STATE(_rs,				\

				      DEFAULT_RATELIMIT_INTERVAL,	\

				      DEFAULT_RATELIMIT_BURST);		\

									\

	if (__ratelimit(&_rs))						\

		drm_err(fmt, ##__VA_ARGS__);				\

})

#if DRM_DEBUG_CODE

#define DRM_INFO(fmt, ...)				\

	printk(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)

#define DRM_INFO_ONCE(fmt, ...)				\

	printk_once(KERN_INFO "[" DRM_NAME "] " fmt, ##__VA_ARGS__)

/**

 * Debug output.

 *

 * \param fmt printf() like format string.

 * \param arg arguments

 */

#define DRM_DEBUG(fmt, args...)						\

    do {                                                    \

    printk(KERN_INFO "[" DRM_NAME "] " fmt, ##args);  \

	} while (0)