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      1 /* exynos_drm.h
      2  *
      3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
      4  * Authors:
      5  *	Inki Dae <inki.dae (at) samsung.com>
      6  *	Joonyoung Shim <jy0922.shim (at) samsung.com>
      7  *	Seung-Woo Kim <sw0312.kim (at) samsung.com>
      8  *
      9  * Permission is hereby granted, free of charge, to any person obtaining a
     10  * copy of this software and associated documentation files (the "Software"),
     11  * to deal in the Software without restriction, including without limitation
     12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     13  * and/or sell copies of the Software, and to permit persons to whom the
     14  * Software is furnished to do so, subject to the following conditions:
     15  *
     16  * The above copyright notice and this permission notice (including the next
     17  * paragraph) shall be included in all copies or substantial portions of the
     18  * Software.
     19  *
     20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     23  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     26  * OTHER DEALINGS IN THE SOFTWARE.
     27  */
     28 
     29 #ifndef _EXYNOS_DRM_H_
     30 #define _EXYNOS_DRM_H_
     31 
     32 #include "drm.h"
     33 
     34 /**
     35  * User-desired buffer creation information structure.
     36  *
     37  * @size: user-desired memory allocation size.
     38  *	- this size value would be page-aligned internally.
     39  * @flags: user request for setting memory type or cache attributes.
     40  * @handle: returned a handle to created gem object.
     41  *	- this handle will be set by gem module of kernel side.
     42  */
     43 struct drm_exynos_gem_create {
     44 	uint64_t size;
     45 	unsigned int flags;
     46 	unsigned int handle;
     47 };
     48 
     49 /**
     50  * A structure for getting buffer offset.
     51  *
     52  * @handle: a pointer to gem object created.
     53  * @pad: just padding to be 64-bit aligned.
     54  * @offset: relatived offset value of the memory region allocated.
     55  *	- this value should be set by user.
     56  */
     57 struct drm_exynos_gem_map_off {
     58 	unsigned int handle;
     59 	unsigned int pad;
     60 	uint64_t offset;
     61 };
     62 
     63 /**
     64  * A structure for mapping buffer.
     65  *
     66  * @handle: a handle to gem object created.
     67  * @pad: just padding to be 64-bit aligned.
     68  * @size: memory size to be mapped.
     69  * @mapped: having user virtual address mmaped.
     70  *	- this variable would be filled by exynos gem module
     71  *	of kernel side with user virtual address which is allocated
     72  *	by do_mmap().
     73  */
     74 struct drm_exynos_gem_mmap {
     75 	unsigned int handle;
     76 	unsigned int pad;
     77 	uint64_t size;
     78 	uint64_t mapped;
     79 };
     80 
     81 /**
     82  * A structure to gem information.
     83  *
     84  * @handle: a handle to gem object created.
     85  * @flags: flag value including memory type and cache attribute and
     86  *	this value would be set by driver.
     87  * @size: size to memory region allocated by gem and this size would
     88  *	be set by driver.
     89  */
     90 struct drm_exynos_gem_info {
     91 	unsigned int handle;
     92 	unsigned int flags;
     93 	uint64_t size;
     94 };
     95 
     96 /**
     97  * A structure for user connection request of virtual display.
     98  *
     99  * @connection: indicate whether doing connetion or not by user.
    100  * @extensions: if this value is 1 then the vidi driver would need additional
    101  *	128bytes edid data.
    102  * @edid: the edid data pointer from user side.
    103  */
    104 struct drm_exynos_vidi_connection {
    105 	unsigned int connection;
    106 	unsigned int extensions;
    107 	uint64_t edid;
    108 };
    109 
    110 /* memory type definitions. */
    111 enum e_drm_exynos_gem_mem_type {
    112 	/* Physically Continuous memory and used as default. */
    113 	EXYNOS_BO_CONTIG	= 0 << 0,
    114 	/* Physically Non-Continuous memory. */
    115 	EXYNOS_BO_NONCONTIG	= 1 << 0,
    116 	/* non-cachable mapping and used as default. */
    117 	EXYNOS_BO_NONCACHABLE	= 0 << 1,
    118 	/* cachable mapping. */
    119 	EXYNOS_BO_CACHABLE	= 1 << 1,
    120 	/* write-combine mapping. */
    121 	EXYNOS_BO_WC		= 1 << 2,
    122 	EXYNOS_BO_MASK		= EXYNOS_BO_NONCONTIG | EXYNOS_BO_CACHABLE |
    123 					EXYNOS_BO_WC
    124 };
    125 
    126 struct drm_exynos_g2d_get_ver {
    127 	__u32	major;
    128 	__u32	minor;
    129 };
    130 
    131 struct drm_exynos_g2d_cmd {
    132 	__u32	offset;
    133 	__u32	data;
    134 };
    135 
    136 enum drm_exynos_g2d_buf_type {
    137 	G2D_BUF_USERPTR = 1 << 31,
    138 };
    139 
    140 enum drm_exynos_g2d_event_type {
    141 	G2D_EVENT_NOT,
    142 	G2D_EVENT_NONSTOP,
    143 	G2D_EVENT_STOP,		/* not yet */
    144 };
    145 
    146 struct drm_exynos_g2d_userptr {
    147 	unsigned long userptr;
    148 	unsigned long size;
    149 };
    150 
    151 struct drm_exynos_g2d_set_cmdlist {
    152 	__u64					cmd;
    153 	__u64					cmd_buf;
    154 	__u32					cmd_nr;
    155 	__u32					cmd_buf_nr;
    156 
    157 	/* for g2d event */
    158 	__u64					event_type;
    159 	__u64					user_data;
    160 };
    161 
    162 struct drm_exynos_g2d_exec {
    163 	__u64					async;
    164 };
    165 
    166 #define DRM_EXYNOS_GEM_CREATE		0x00
    167 #define DRM_EXYNOS_GEM_MAP_OFFSET	0x01
    168 #define DRM_EXYNOS_GEM_MMAP		0x02
    169 /* Reserved 0x04 ~ 0x05 for exynos specific gem ioctl */
    170 #define DRM_EXYNOS_GEM_GET		0x04
    171 #define DRM_EXYNOS_VIDI_CONNECTION	0x07
    172 
    173 /* G2D */
    174 #define DRM_EXYNOS_G2D_GET_VER		0x20
    175 #define DRM_EXYNOS_G2D_SET_CMDLIST	0x21
    176 #define DRM_EXYNOS_G2D_EXEC		0x22
    177 
    178 #define DRM_IOCTL_EXYNOS_GEM_CREATE		DRM_IOWR(DRM_COMMAND_BASE + \
    179 		DRM_EXYNOS_GEM_CREATE, struct drm_exynos_gem_create)
    180 
    181 #define DRM_IOCTL_EXYNOS_GEM_MAP_OFFSET	DRM_IOWR(DRM_COMMAND_BASE + \
    182 		DRM_EXYNOS_GEM_MAP_OFFSET, struct drm_exynos_gem_map_off)
    183 
    184 #define DRM_IOCTL_EXYNOS_GEM_MMAP	DRM_IOWR(DRM_COMMAND_BASE + \
    185 		DRM_EXYNOS_GEM_MMAP, struct drm_exynos_gem_mmap)
    186 
    187 #define DRM_IOCTL_EXYNOS_GEM_GET	DRM_IOWR(DRM_COMMAND_BASE + \
    188 		DRM_EXYNOS_GEM_GET,	struct drm_exynos_gem_info)
    189 
    190 #define DRM_IOCTL_EXYNOS_VIDI_CONNECTION	DRM_IOWR(DRM_COMMAND_BASE + \
    191 		DRM_EXYNOS_VIDI_CONNECTION, struct drm_exynos_vidi_connection)
    192 
    193 #define DRM_IOCTL_EXYNOS_G2D_GET_VER		DRM_IOWR(DRM_COMMAND_BASE + \
    194 		DRM_EXYNOS_G2D_GET_VER, struct drm_exynos_g2d_get_ver)
    195 #define DRM_IOCTL_EXYNOS_G2D_SET_CMDLIST	DRM_IOWR(DRM_COMMAND_BASE + \
    196 		DRM_EXYNOS_G2D_SET_CMDLIST, struct drm_exynos_g2d_set_cmdlist)
    197 #define DRM_IOCTL_EXYNOS_G2D_EXEC		DRM_IOWR(DRM_COMMAND_BASE + \
    198 		DRM_EXYNOS_G2D_EXEC, struct drm_exynos_g2d_exec)
    199 
    200 #endif
    201