src/intel/common/gen_aux_map.h

   1 /*
   2  * Copyright (c) 2018 Intel Corporation
   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 GEN_AUX_MAP_H
  25 #define GEN_AUX_MAP_H
  26
  27 #include "gen_buffer_alloc.h"
  28
  29 #include "isl/isl.h"
  30
  31 #include <stdint.h>
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /**
  38  * Auxiliary surface mapping implementation
  39  *
  40  * These functions are implemented in common code shared by drivers.
  41  */
  42
  43 struct gen_aux_map_context;
  44 struct gen_device_info;
  45
  46 #define GEN_AUX_MAP_ADDRESS_MASK       0x0000ffffffffff00ull
  47 #define GEN_AUX_MAP_FORMAT_BITS_MASK   0xfff0000000000000ull
  48 #define GEN_AUX_MAP_ENTRY_VALID_BIT    0x1ull
  49 #define GEN_AUX_MAP_GEN12_CCS_SCALE    256
  50 #define GEN_AUX_MAP_MAIN_PAGE_SIZE     (64 * 1024)
  51 #define GEN_AUX_MAP_AUX_PAGE_SIZE \
  52    (GEN_AUX_MAP_MAIN_PAGE_SIZE / GEN_AUX_MAP_GEN12_CCS_SCALE)
  53
  54 struct gen_aux_map_context *
  55 gen_aux_map_init(void *driver_ctx,
  56                  struct gen_mapped_pinned_buffer_alloc *buffer_alloc,
  57                  const struct gen_device_info *devinfo);
  58
  59 void
  60 gen_aux_map_finish(struct gen_aux_map_context *ctx);
  61
  62 uint32_t
  63 gen_aux_map_get_state_num(struct gen_aux_map_context *ctx);
  64
  65 /** Returns the current number of buffers used by the aux-map tables
  66  *
  67  * When preparing to execute a new batch, use this function to determine how
  68  * many buffers will be required. More buffers may be added by concurrent
  69  * accesses of the aux-map functions, but they won't be required for since
  70  * they involve surfaces not used by this batch.
  71  */
  72 uint32_t
  73 gen_aux_map_get_num_buffers(struct gen_aux_map_context *ctx);
  74
  75 /** Fill an array of exec_object2 with aux-map buffer handles
  76  *
  77  * The gen_aux_map_get_num_buffers call should be made, then the driver can
  78  * make sure the `obj` array is large enough before calling this function.
  79  */
  80 void
  81 gen_aux_map_fill_bos(struct gen_aux_map_context *ctx, void **driver_bos,
  82                      uint32_t max_bos);
  83
  84 uint64_t
  85 gen_aux_map_get_base(struct gen_aux_map_context *ctx);
  86
  87 uint64_t
  88 gen_aux_map_format_bits_for_isl_surf(const struct isl_surf *isl_surf);
  89
  90 uint64_t *
  91 gen_aux_map_get_entry(struct gen_aux_map_context *ctx,
  92                       uint64_t address,
  93                       uint64_t *entry_address);
  94
  95 void
  96 gen_aux_map_add_mapping(struct gen_aux_map_context *ctx, uint64_t address,
  97                         uint64_t aux_address, uint64_t main_size_B,
  98                         uint64_t format_bits);
  99
 100 void
 101 gen_aux_map_add_image(struct gen_aux_map_context *ctx,
 102                       const struct isl_surf *isl_surf, uint64_t address,
 103                       uint64_t aux_address);
 104
 105 void
 106 gen_aux_map_unmap_range(struct gen_aux_map_context *ctx, uint64_t address,
 107                         uint64_t size);
 108
 109 #ifdef __cplusplus
 110 }
 111 #endif
 112
 113 #endif /* GEN_AUX_MAP_H */