include/drm-uapi/panfrost_drm.h

   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)
  12 extern "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  */
  49 struct 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  */
  81 struct drm_panfrost_wait_bo {
  82         __u32 handle;
  83         __u32 pad;
  84         __s64 timeout_ns;       /* absolute */
  85 };
  86
  87 #define PANFROST_BO_NOEXEC      1
  88 #define PANFROST_BO_HEAP        2
  89
  90 /**
  91  * struct drm_panfrost_create_bo - ioctl argument for creating Panfrost BOs.
  92  *
  93  * There are currently no values for the flags argument, but it may be
  94  * used in a future extension.
  95  */
  96 struct 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  */
 125 struct 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
 133 enum 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 };
 175
 176 struct drm_panfrost_get_param {
 177         __u32 param;
 178         __u32 pad;
 179         __u64 value;
 180 };
 181
 182 /**
 183  * Returns the offset for the BO in the GPU address space for this DRM fd.
 184  * This is the same value returned by drm_panfrost_create_bo, if that was called
 185  * from this DRM fd.
 186  */
 187 struct drm_panfrost_get_bo_offset {
 188         __u32 handle;
 189         __u32 pad;
 190         __u64 offset;
 191 };
 192
 193 struct drm_panfrost_perfcnt_enable {
 194         __u32 enable;
 195         /*
 196          * On bifrost we have 2 sets of counters, this parameter defines the
 197          * one to track.
 198          */
 199         __u32 counterset;
 200 };
 201
 202 struct drm_panfrost_perfcnt_dump {
 203         __u64 buf_ptr;
 204 };
 205
 206 /* madvise provides a way to tell the kernel in case a buffers contents
 207  * can be discarded under memory pressure, which is useful for userspace
 208  * bo cache where we want to optimistically hold on to buffer allocate
 209  * and potential mmap, but allow the pages to be discarded under memory
 210  * pressure.
 211  *
 212  * Typical usage would involve madvise(DONTNEED) when buffer enters BO
 213  * cache, and madvise(WILLNEED) if trying to recycle buffer from BO cache.
 214  * In the WILLNEED case, 'retained' indicates to userspace whether the
 215  * backing pages still exist.
 216  */
 217 #define PANFROST_MADV_WILLNEED 0        /* backing pages are needed, status returned in 'retained' */
 218 #define PANFROST_MADV_DONTNEED 1        /* backing pages not needed */
 219
 220 struct drm_panfrost_madvise {
 221         __u32 handle;         /* in, GEM handle */
 222         __u32 madv;           /* in, PANFROST_MADV_x */
 223         __u32 retained;       /* out, whether backing store still exists */
 224 };
 225
 226 #if defined(__cplusplus)
 227 }
 228 #endif
 229
 230 #endif /* _PANFROST_DRM_H_ */