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| 1 | +/* |
| 2 | + * Copyright © 2014-2018 Broadcom |
| 3 | + * |
| 4 | + * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | + * copy of this software and associated documentation files (the "Software"), |
| 6 | + * to deal in the Software without restriction, including without limitation |
| 7 | + * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | + * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | + * Software is furnished to do so, subject to the following conditions: |
| 10 | + * |
| 11 | + * The above copyright notice and this permission notice (including the next |
| 12 | + * paragraph) shall be included in all copies or substantial portions of the |
| 13 | + * Software. |
| 14 | + * |
| 15 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | + * IN THE SOFTWARE. |
| 22 | + */ |
| 23 | + |
| 24 | +#ifndef _V3D_DRM_H_ |
| 25 | +#define _V3D_DRM_H_ |
| 26 | + |
| 27 | +#include "drm.h" |
| 28 | + |
| 29 | +#if defined(__cplusplus) |
| 30 | +extern "C" { |
| 31 | +#endif |
| 32 | + |
| 33 | +#define DRM_V3D_SUBMIT_CL 0x00 |
| 34 | +#define DRM_V3D_WAIT_BO 0x01 |
| 35 | +#define DRM_V3D_CREATE_BO 0x02 |
| 36 | +#define DRM_V3D_MMAP_BO 0x03 |
| 37 | +#define DRM_V3D_GET_PARAM 0x04 |
| 38 | +#define DRM_V3D_GET_BO_OFFSET 0x05 |
| 39 | + |
| 40 | +#define DRM_IOCTL_V3D_SUBMIT_CL DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_CL, struct drm_v3d_submit_cl) |
| 41 | +#define DRM_IOCTL_V3D_WAIT_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_WAIT_BO, struct drm_v3d_wait_bo) |
| 42 | +#define DRM_IOCTL_V3D_CREATE_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_CREATE_BO, struct drm_v3d_create_bo) |
| 43 | +#define DRM_IOCTL_V3D_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_MMAP_BO, struct drm_v3d_mmap_bo) |
| 44 | +#define DRM_IOCTL_V3D_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_GET_PARAM, struct drm_v3d_get_param) |
| 45 | +#define DRM_IOCTL_V3D_GET_BO_OFFSET DRM_IOWR(DRM_COMMAND_BASE + DRM_V3D_GET_BO_OFFSET, struct drm_v3d_get_bo_offset) |
| 46 | + |
| 47 | +/** |
| 48 | + * struct drm_v3d_submit_cl - ioctl argument for submitting commands to the 3D |
| 49 | + * engine. |
| 50 | + * |
| 51 | + * This asks the kernel to have the GPU execute an optional binner |
| 52 | + * command list, and a render command list. |
| 53 | + */ |
| 54 | +struct drm_v3d_submit_cl { |
| 55 | + /* Pointer to the binner command list. |
| 56 | + * |
| 57 | + * This is the first set of commands executed, which runs the |
| 58 | + * coordinate shader to determine where primitives land on the screen, |
| 59 | + * then writes out the state updates and draw calls necessary per tile |
| 60 | + * to the tile allocation BO. |
| 61 | + */ |
| 62 | + __u32 bcl_start; |
| 63 | + |
| 64 | + /** End address of the BCL (first byte after the BCL) */ |
| 65 | + __u32 bcl_end; |
| 66 | + |
| 67 | + /* Offset of the render command list. |
| 68 | + * |
| 69 | + * This is the second set of commands executed, which will either |
| 70 | + * execute the tiles that have been set up by the BCL, or a fixed set |
| 71 | + * of tiles (in the case of RCL-only blits). |
| 72 | + */ |
| 73 | + __u32 rcl_start; |
| 74 | + |
| 75 | + /** End address of the RCL (first byte after the RCL) */ |
| 76 | + __u32 rcl_end; |
| 77 | + |
| 78 | + /** An optional sync object to wait on before starting the BCL. */ |
| 79 | + __u32 in_sync_bcl; |
| 80 | + /** An optional sync object to wait on before starting the RCL. */ |
| 81 | + __u32 in_sync_rcl; |
| 82 | + /** An optional sync object to place the completion fence in. */ |
| 83 | + __u32 out_sync; |
| 84 | + |
| 85 | + /* Offset of the tile alloc memory |
| 86 | + * |
| 87 | + * This is optional on V3D 3.3 (where the CL can set the value) but |
| 88 | + * required on V3D 4.1. |
| 89 | + */ |
| 90 | + __u32 qma; |
| 91 | + |
| 92 | + /** Size of the tile alloc memory. */ |
| 93 | + __u32 qms; |
| 94 | + |
| 95 | + /** Offset of the tile state data array. */ |
| 96 | + __u32 qts; |
| 97 | + |
| 98 | + /* Pointer to a u32 array of the BOs that are referenced by the job. |
| 99 | + */ |
| 100 | + __u64 bo_handles; |
| 101 | + |
| 102 | + /* Number of BO handles passed in (size is that times 4). */ |
| 103 | + __u32 bo_handle_count; |
| 104 | + |
| 105 | + /* Pad, must be zero-filled. */ |
| 106 | + __u32 pad; |
| 107 | +}; |
| 108 | + |
| 109 | +/** |
| 110 | + * struct drm_v3d_wait_bo - ioctl argument for waiting for |
| 111 | + * completion of the last DRM_V3D_SUBMIT_CL on a BO. |
| 112 | + * |
| 113 | + * This is useful for cases where multiple processes might be |
| 114 | + * rendering to a BO and you want to wait for all rendering to be |
| 115 | + * completed. |
| 116 | + */ |
| 117 | +struct drm_v3d_wait_bo { |
| 118 | + __u32 handle; |
| 119 | + __u32 pad; |
| 120 | + __u64 timeout_ns; |
| 121 | +}; |
| 122 | + |
| 123 | +/** |
| 124 | + * struct drm_v3d_create_bo - ioctl argument for creating V3D BOs. |
| 125 | + * |
| 126 | + * There are currently no values for the flags argument, but it may be |
| 127 | + * used in a future extension. |
| 128 | + */ |
| 129 | +struct drm_v3d_create_bo { |
| 130 | + __u32 size; |
| 131 | + __u32 flags; |
| 132 | + /** Returned GEM handle for the BO. */ |
| 133 | + __u32 handle; |
| 134 | + /** |
| 135 | + * Returned offset for the BO in the V3D address space. This offset |
| 136 | + * is private to the DRM fd and is valid for the lifetime of the GEM |
| 137 | + * handle. |
| 138 | + * |
| 139 | + * This offset value will always be nonzero, since various HW |
| 140 | + * units treat 0 specially. |
| 141 | + */ |
| 142 | + __u32 offset; |
| 143 | +}; |
| 144 | + |
| 145 | +/** |
| 146 | + * struct drm_v3d_mmap_bo - ioctl argument for mapping V3D BOs. |
| 147 | + * |
| 148 | + * This doesn't actually perform an mmap. Instead, it returns the |
| 149 | + * offset you need to use in an mmap on the DRM device node. This |
| 150 | + * means that tools like valgrind end up knowing about the mapped |
| 151 | + * memory. |
| 152 | + * |
| 153 | + * There are currently no values for the flags argument, but it may be |
| 154 | + * used in a future extension. |
| 155 | + */ |
| 156 | +struct drm_v3d_mmap_bo { |
| 157 | + /** Handle for the object being mapped. */ |
| 158 | + __u32 handle; |
| 159 | + __u32 flags; |
| 160 | + /** offset into the drm node to use for subsequent mmap call. */ |
| 161 | + __u64 offset; |
| 162 | +}; |
| 163 | + |
| 164 | +enum drm_v3d_param { |
| 165 | + DRM_V3D_PARAM_V3D_UIFCFG, |
| 166 | + DRM_V3D_PARAM_V3D_HUB_IDENT1, |
| 167 | + DRM_V3D_PARAM_V3D_HUB_IDENT2, |
| 168 | + DRM_V3D_PARAM_V3D_HUB_IDENT3, |
| 169 | + DRM_V3D_PARAM_V3D_CORE0_IDENT0, |
| 170 | + DRM_V3D_PARAM_V3D_CORE0_IDENT1, |
| 171 | + DRM_V3D_PARAM_V3D_CORE0_IDENT2, |
| 172 | +}; |
| 173 | + |
| 174 | +struct drm_v3d_get_param { |
| 175 | + __u32 param; |
| 176 | + __u32 pad; |
| 177 | + __u64 value; |
| 178 | +}; |
| 179 | + |
| 180 | +/** |
| 181 | + * Returns the offset for the BO in the V3D address space for this DRM fd. |
| 182 | + * This is the same value returned by drm_v3d_create_bo, if that was called |
| 183 | + * from this DRM fd. |
| 184 | + */ |
| 185 | +struct drm_v3d_get_bo_offset { |
| 186 | + __u32 handle; |
| 187 | + __u32 offset; |
| 188 | +}; |
| 189 | + |
| 190 | +#if defined(__cplusplus) |
| 191 | +} |
| 192 | +#endif |
| 193 | + |
| 194 | +#endif /* _V3D_DRM_H_ */ |