drivers/gpu/drm/imagination/pvr_stream.h

   1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
   2 /* Copyright (c) 2023 Imagination Technologies Ltd. */
   3
   4 #ifndef PVR_STREAM_H
   5 #define PVR_STREAM_H
   6
   7 #include <linux/bits.h>
   8 #include <linux/limits.h>
   9 #include <linux/types.h>
  10
  11 struct pvr_device;
  12
  13 struct pvr_job;
  14
  15 enum pvr_stream_type {
  16         PVR_STREAM_TYPE_GEOM = 0,
  17         PVR_STREAM_TYPE_FRAG,
  18         PVR_STREAM_TYPE_COMPUTE,
  19         PVR_STREAM_TYPE_TRANSFER,
  20         PVR_STREAM_TYPE_STATIC_RENDER_CONTEXT,
  21         PVR_STREAM_TYPE_STATIC_COMPUTE_CONTEXT,
  22
  23         PVR_STREAM_TYPE_MAX
  24 };
  25
  26 enum pvr_stream_size {
  27         PVR_STREAM_SIZE_8 = 0,
  28         PVR_STREAM_SIZE_16,
  29         PVR_STREAM_SIZE_32,
  30         PVR_STREAM_SIZE_64,
  31         PVR_STREAM_SIZE_ARRAY,
  32 };
  33
  34 #define PVR_FEATURE_NOT  BIT(31)
  35 #define PVR_FEATURE_NONE U32_MAX
  36
  37 struct pvr_stream_def {
  38         u32 offset;
  39         enum pvr_stream_size size;
  40         u32 array_size;
  41         u32 feature;
  42 };
  43
  44 struct pvr_stream_ext_def {
  45         const struct pvr_stream_def *stream;
  46         u32 stream_len;
  47         u32 header_mask;
  48         u32 quirk;
  49 };
  50
  51 struct pvr_stream_ext_header {
  52         const struct pvr_stream_ext_def *ext_streams;
  53         u32 ext_streams_num;
  54         u32 valid_mask;
  55 };
  56
  57 struct pvr_stream_cmd_defs {
  58         enum pvr_stream_type type;
  59
  60         const struct pvr_stream_def *main_stream;
  61         u32 main_stream_len;
  62
  63         u32 ext_nr_headers;
  64         const struct pvr_stream_ext_header *ext_headers;
  65
  66         size_t dest_size;
  67 };
  68
  69 int
  70 pvr_stream_process(struct pvr_device *pvr_dev, const struct pvr_stream_cmd_defs *cmd_defs,
  71                    void *stream, u32 stream_size, void *dest_out);
  72 void
  73 pvr_stream_create_musthave_masks(struct pvr_device *pvr_dev);
  74
  75 #endif /* PVR_STREAM_H */