panfrost_drm.h (7391B)
1/* SPDX-License-Identifier: MIT */ 2/* 3 * Copyright © 2014-2018 Broadcom 4 * Copyright © 2019 Collabora ltd. 5 */ 6#ifndef _PANFROST_DRM_H_ 7#define _PANFROST_DRM_H_ 8 9#include "drm.h" 10 11#if defined(__cplusplus) 12extern "C" { 13#endif 14 15#define DRM_PANFROST_SUBMIT 0x00 16#define DRM_PANFROST_WAIT_BO 0x01 17#define DRM_PANFROST_CREATE_BO 0x02 18#define DRM_PANFROST_MMAP_BO 0x03 19#define DRM_PANFROST_GET_PARAM 0x04 20#define DRM_PANFROST_GET_BO_OFFSET 0x05 21#define DRM_PANFROST_PERFCNT_ENABLE 0x06 22#define DRM_PANFROST_PERFCNT_DUMP 0x07 23#define DRM_PANFROST_MADVISE 0x08 24 25#define DRM_IOCTL_PANFROST_SUBMIT DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_SUBMIT, struct drm_panfrost_submit) 26#define DRM_IOCTL_PANFROST_WAIT_BO DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_WAIT_BO, struct drm_panfrost_wait_bo) 27#define DRM_IOCTL_PANFROST_CREATE_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_CREATE_BO, struct drm_panfrost_create_bo) 28#define DRM_IOCTL_PANFROST_MMAP_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_MMAP_BO, struct drm_panfrost_mmap_bo) 29#define DRM_IOCTL_PANFROST_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_GET_PARAM, struct drm_panfrost_get_param) 30#define DRM_IOCTL_PANFROST_GET_BO_OFFSET DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_GET_BO_OFFSET, struct drm_panfrost_get_bo_offset) 31#define DRM_IOCTL_PANFROST_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_MADVISE, struct drm_panfrost_madvise) 32 33/* 34 * Unstable ioctl(s): only exposed when the unsafe unstable_ioctls module 35 * param is set to true. 36 * All these ioctl(s) are subject to deprecation, so please don't rely on 37 * them for anything but debugging purpose. 38 */ 39#define DRM_IOCTL_PANFROST_PERFCNT_ENABLE DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_ENABLE, struct drm_panfrost_perfcnt_enable) 40#define DRM_IOCTL_PANFROST_PERFCNT_DUMP DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_PERFCNT_DUMP, struct drm_panfrost_perfcnt_dump) 41 42#define PANFROST_JD_REQ_FS (1 << 0) 43/** 44 * struct drm_panfrost_submit - ioctl argument for submitting commands to the 3D 45 * engine. 46 * 47 * This asks the kernel to have the GPU execute a render command list. 48 */ 49struct drm_panfrost_submit { 50 51 /** Address to GPU mapping of job descriptor */ 52 __u64 jc; 53 54 /** An optional array of sync objects to wait on before starting this job. */ 55 __u64 in_syncs; 56 57 /** Number of sync objects to wait on before starting this job. */ 58 __u32 in_sync_count; 59 60 /** An optional sync object to place the completion fence in. */ 61 __u32 out_sync; 62 63 /** Pointer to a u32 array of the BOs that are referenced by the job. */ 64 __u64 bo_handles; 65 66 /** Number of BO handles passed in (size is that times 4). */ 67 __u32 bo_handle_count; 68 69 /** A combination of PANFROST_JD_REQ_* */ 70 __u32 requirements; 71}; 72 73/** 74 * struct drm_panfrost_wait_bo - ioctl argument for waiting for 75 * completion of the last DRM_PANFROST_SUBMIT on a BO. 76 * 77 * This is useful for cases where multiple processes might be 78 * rendering to a BO and you want to wait for all rendering to be 79 * completed. 80 */ 81struct drm_panfrost_wait_bo { 82 __u32 handle; 83 __u32 pad; 84 __s64 timeout_ns; /* absolute */ 85}; 86 87/* Valid flags to pass to drm_panfrost_create_bo */ 88#define PANFROST_BO_NOEXEC 1 89#define PANFROST_BO_HEAP 2 90 91/** 92 * struct drm_panfrost_create_bo - ioctl argument for creating Panfrost BOs. 93 * 94 * The flags argument is a bit mask of PANFROST_BO_* flags. 95 */ 96struct drm_panfrost_create_bo { 97 __u32 size; 98 __u32 flags; 99 /** Returned GEM handle for the BO. */ 100 __u32 handle; 101 /* Pad, must be zero-filled. */ 102 __u32 pad; 103 /** 104 * Returned offset for the BO in the GPU address space. This offset 105 * is private to the DRM fd and is valid for the lifetime of the GEM 106 * handle. 107 * 108 * This offset value will always be nonzero, since various HW 109 * units treat 0 specially. 110 */ 111 __u64 offset; 112}; 113 114/** 115 * struct drm_panfrost_mmap_bo - ioctl argument for mapping Panfrost BOs. 116 * 117 * This doesn't actually perform an mmap. Instead, it returns the 118 * offset you need to use in an mmap on the DRM device node. This 119 * means that tools like valgrind end up knowing about the mapped 120 * memory. 121 * 122 * There are currently no values for the flags argument, but it may be 123 * used in a future extension. 124 */ 125struct drm_panfrost_mmap_bo { 126 /** Handle for the object being mapped. */ 127 __u32 handle; 128 __u32 flags; 129 /** offset into the drm node to use for subsequent mmap call. */ 130 __u64 offset; 131}; 132 133enum drm_panfrost_param { 134 DRM_PANFROST_PARAM_GPU_PROD_ID, 135 DRM_PANFROST_PARAM_GPU_REVISION, 136 DRM_PANFROST_PARAM_SHADER_PRESENT, 137 DRM_PANFROST_PARAM_TILER_PRESENT, 138 DRM_PANFROST_PARAM_L2_PRESENT, 139 DRM_PANFROST_PARAM_STACK_PRESENT, 140 DRM_PANFROST_PARAM_AS_PRESENT, 141 DRM_PANFROST_PARAM_JS_PRESENT, 142 DRM_PANFROST_PARAM_L2_FEATURES, 143 DRM_PANFROST_PARAM_CORE_FEATURES, 144 DRM_PANFROST_PARAM_TILER_FEATURES, 145 DRM_PANFROST_PARAM_MEM_FEATURES, 146 DRM_PANFROST_PARAM_MMU_FEATURES, 147 DRM_PANFROST_PARAM_THREAD_FEATURES, 148 DRM_PANFROST_PARAM_MAX_THREADS, 149 DRM_PANFROST_PARAM_THREAD_MAX_WORKGROUP_SZ, 150 DRM_PANFROST_PARAM_THREAD_MAX_BARRIER_SZ, 151 DRM_PANFROST_PARAM_COHERENCY_FEATURES, 152 DRM_PANFROST_PARAM_TEXTURE_FEATURES0, 153 DRM_PANFROST_PARAM_TEXTURE_FEATURES1, 154 DRM_PANFROST_PARAM_TEXTURE_FEATURES2, 155 DRM_PANFROST_PARAM_TEXTURE_FEATURES3, 156 DRM_PANFROST_PARAM_JS_FEATURES0, 157 DRM_PANFROST_PARAM_JS_FEATURES1, 158 DRM_PANFROST_PARAM_JS_FEATURES2, 159 DRM_PANFROST_PARAM_JS_FEATURES3, 160 DRM_PANFROST_PARAM_JS_FEATURES4, 161 DRM_PANFROST_PARAM_JS_FEATURES5, 162 DRM_PANFROST_PARAM_JS_FEATURES6, 163 DRM_PANFROST_PARAM_JS_FEATURES7, 164 DRM_PANFROST_PARAM_JS_FEATURES8, 165 DRM_PANFROST_PARAM_JS_FEATURES9, 166 DRM_PANFROST_PARAM_JS_FEATURES10, 167 DRM_PANFROST_PARAM_JS_FEATURES11, 168 DRM_PANFROST_PARAM_JS_FEATURES12, 169 DRM_PANFROST_PARAM_JS_FEATURES13, 170 DRM_PANFROST_PARAM_JS_FEATURES14, 171 DRM_PANFROST_PARAM_JS_FEATURES15, 172 DRM_PANFROST_PARAM_NR_CORE_GROUPS, 173 DRM_PANFROST_PARAM_THREAD_TLS_ALLOC, 174 DRM_PANFROST_PARAM_AFBC_FEATURES, 175}; 176 177struct drm_panfrost_get_param { 178 __u32 param; 179 __u32 pad; 180 __u64 value; 181}; 182 183/** 184 * Returns the offset for the BO in the GPU address space for this DRM fd. 185 * This is the same value returned by drm_panfrost_create_bo, if that was called 186 * from this DRM fd. 187 */ 188struct drm_panfrost_get_bo_offset { 189 __u32 handle; 190 __u32 pad; 191 __u64 offset; 192}; 193 194struct drm_panfrost_perfcnt_enable { 195 __u32 enable; 196 /* 197 * On bifrost we have 2 sets of counters, this parameter defines the 198 * one to track. 199 */ 200 __u32 counterset; 201}; 202 203struct drm_panfrost_perfcnt_dump { 204 __u64 buf_ptr; 205}; 206 207/* madvise provides a way to tell the kernel in case a buffers contents 208 * can be discarded under memory pressure, which is useful for userspace 209 * bo cache where we want to optimistically hold on to buffer allocate 210 * and potential mmap, but allow the pages to be discarded under memory 211 * pressure. 212 * 213 * Typical usage would involve madvise(DONTNEED) when buffer enters BO 214 * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache. 215 * In the WILLNEED case, 'retained' indicates to userspace whether the 216 * backing pages still exist. 217 */ 218#define PANFROST_MADV_WILLNEED 0 /* backing pages are needed, status returned in 'retained' */ 219#define PANFROST_MADV_DONTNEED 1 /* backing pages not needed */ 220 221struct drm_panfrost_madvise { 222 __u32 handle; /* in, GEM handle */ 223 __u32 madv; /* in, PANFROST_MADV_x */ 224 __u32 retained; /* out, whether backing store still exists */ 225}; 226 227#if defined(__cplusplus) 228} 229#endif 230 231#endif /* _PANFROST_DRM_H_ */