src/broadcom/vulkan/v3dv_uniforms.c - platform/external/mesa3d - Git at Google

 /*
  * Copyright © 2019 Raspberry Pi
  *
  * Based in part on v3d driver which is:
  *
  * Copyright © 2014-2017 Broadcom
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  * IN THE SOFTWARE.
  */

 #include "v3dv_private.h"

 static bool
 descriptor_type_is_dynamic(VkDescriptorType type)
 {
    switch (type) {
    case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
    case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
       return false;
       break;
    case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
    case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC:
       return true;
       break;
    default:
       assert(!"descriptor type not supported.\n");
       break;
    }
    return false;
 }

 static struct v3dv_descriptor *
 get_descriptor(struct v3dv_descriptor_state *descriptor_state,
                struct v3dv_descriptor_map *map,
                struct v3dv_pipeline_layout *pipeline_layout,
                uint32_t index,
                uint32_t *dynamic_offset)
 {
    assert(index >= 0 && index < map->num_desc);

    uint32_t set_number = map->set[index];
    assert(descriptor_state->valid & 1 << set_number);

    struct v3dv_descriptor_set *set =
       descriptor_state->descriptor_sets[set_number];
    assert(set);

    uint32_t binding_number = map->binding[index];
    assert(binding_number < set->layout->binding_count);

    const struct v3dv_descriptor_set_binding_layout *binding_layout =
       &set->layout->binding[binding_number];

    uint32_t array_index = map->array_index[index];
    assert(array_index < binding_layout->array_size);

    if (descriptor_type_is_dynamic(binding_layout->type)) {
       uint32_t dynamic_offset_index =
          pipeline_layout->set[set_number].dynamic_offset_start +
          binding_layout->dynamic_offset_index + array_index;

       *dynamic_offset = descriptor_state->dynamic_offsets[dynamic_offset_index];
    }

    return &set->descriptors[binding_layout->descriptor_index + array_index];
 }

 /*
  * This method checks if the ubo used for push constants is needed to be
  * updated or not.
  *
  * push contants ubo is only used for push constants accessed by a non-const
  * index.
  *
  * FIXME: right now for this cases we are uploading the full
  * push_constants_data. An improvement would be to upload only the data that
  * we need to rely on a UBO.
  */
 static void
 check_push_constants_ubo(struct v3dv_cmd_buffer *cmd_buffer)
 {
    if (!(cmd_buffer->state.dirty & V3DV_CMD_DIRTY_PUSH_CONSTANTS) ||
        cmd_buffer->state.pipeline->layout->push_constant_size == 0)
       return;

    if (cmd_buffer->push_constants_descriptor.bo == NULL) {
       cmd_buffer->push_constants_descriptor.bo =
          v3dv_bo_alloc(cmd_buffer->device, MAX_PUSH_CONSTANTS_SIZE, "push constants");

       if (!cmd_buffer->push_constants_descriptor.bo) {
          fprintf(stderr, "Failed to allocate memory for push constants\n");
          abort();
       }

       bool ok = v3dv_bo_map(cmd_buffer->device,
                             cmd_buffer->push_constants_descriptor.bo,
                             MAX_PUSH_CONSTANTS_SIZE);
       if (!ok) {
          fprintf(stderr, "failed to map push constants buffer\n");
          abort();
       }
    } else {
       if (cmd_buffer->push_constants_descriptor.offset + MAX_PUSH_CONSTANTS_SIZE <=
           cmd_buffer->push_constants_descriptor.bo->size) {
          cmd_buffer->push_constants_descriptor.offset += MAX_PUSH_CONSTANTS_SIZE;
       } else {
          /* FIXME: we got out of space for push descriptors. Should we create
           * a new bo? This could be easier with a uploader
           */
       }
    }

    memcpy(cmd_buffer->push_constants_descriptor.bo->map +
           cmd_buffer->push_constants_descriptor.offset,
           cmd_buffer->push_constants_data,
           MAX_PUSH_CONSTANTS_SIZE);

    cmd_buffer->state.dirty &= ~V3DV_CMD_DIRTY_PUSH_CONSTANTS;
 }

 struct v3dv_cl_reloc
 v3dv_write_uniforms(struct v3dv_cmd_buffer *cmd_buffer,
                     struct v3dv_pipeline_stage *p_stage)
 {
    struct v3d_uniform_list *uinfo = &p_stage->prog_data.base->uniforms;
    struct v3dv_dynamic_state *dynamic = &cmd_buffer->state.dynamic;
    struct v3dv_descriptor_state *descriptor_state =
       &cmd_buffer->state.descriptor_state;
    struct v3dv_pipeline *pipeline = p_stage->pipeline;

    struct v3dv_job *job = cmd_buffer->state.job;
    assert(job);

    /* The hardware always pre-fetches the next uniform (also when there
     * aren't any), so we always allocate space for an extra slot. This
     * fixes MMU exceptions reported since Linux kernel 5.4 when the
     * uniforms fill up the tail bytes of a page in the indirect
     * BO. In that scenario, when the hardware pre-fetches after reading
     * the last uniform it will read beyond the end of the page and trigger
     * the MMU exception.
     */
    v3dv_cl_ensure_space(&job->indirect, (uinfo->count + 1) * 4, 4);

    struct v3dv_cl_reloc uniform_stream = v3dv_cl_get_address(&job->indirect);

    struct v3dv_cl_out *uniforms = cl_start(&job->indirect);

    for (int i = 0; i < uinfo->count; i++) {
       uint32_t data = uinfo->data[i];

       switch (uinfo->contents[i]) {
       case QUNIFORM_CONSTANT:
          cl_aligned_u32(&uniforms, data);
          break;

       case QUNIFORM_UNIFORM:
          assert(pipeline->use_push_constants);
          cl_aligned_u32(&uniforms, cmd_buffer->push_constants_data[data]);
          break;

       case QUNIFORM_VIEWPORT_X_SCALE:
          cl_aligned_f(&uniforms, dynamic->viewport.scale[0][0] * 256.0f);
          break;

       case QUNIFORM_VIEWPORT_Y_SCALE:
          cl_aligned_f(&uniforms, dynamic->viewport.scale[0][1] * 256.0f);
          break;

       case QUNIFORM_VIEWPORT_Z_OFFSET:
          cl_aligned_f(&uniforms, dynamic->viewport.translate[0][2]);
          break;

       case QUNIFORM_VIEWPORT_Z_SCALE:
          cl_aligned_f(&uniforms, dynamic->viewport.scale[0][2]);
          break;

       case QUNIFORM_SSBO_OFFSET:
       case QUNIFORM_UBO_ADDR: {
          struct v3dv_descriptor_map *map =
             uinfo->contents[i] == QUNIFORM_UBO_ADDR ?
             &pipeline->ubo_map : &pipeline->ssbo_map;

          uint32_t offset =
             uinfo->contents[i] == QUNIFORM_UBO_ADDR ?
             v3d_unit_data_get_offset(data) :
             0; /* FIXME */

          uint32_t dynamic_offset = 0;

          /* For ubos, index is shifted, as 0 is reserved for push constants.
           */
          struct v3dv_descriptor *descriptor = NULL;
          if (uinfo->contents[i] == QUNIFORM_UBO_ADDR &&
              v3d_unit_data_get_unit(data) == 0) {
             /* This calls is to ensure that the push_constant_ubo is
              * updated. It already take into account it is should do the
              * update or not
              */
             check_push_constants_ubo(cmd_buffer);

             descriptor = &cmd_buffer->push_constants_descriptor;
          } else {
             uint32_t index =
                uinfo->contents[i] == QUNIFORM_UBO_ADDR ?
                v3d_unit_data_get_unit(data) - 1 :
                data;

             descriptor =
                get_descriptor(descriptor_state, map,
                               pipeline->layout,
                               index, &dynamic_offset);
             assert(descriptor);
          }

          cl_aligned_reloc(&job->indirect, &uniforms,
                           descriptor->bo,
                           descriptor->offset + offset + dynamic_offset);
          break;
       }

       default:
          unreachable("unsupported quniform_contents uniform type\n");
       }
    }

    cl_end(&job->indirect, uniforms);

    return uniform_stream;
 }
	/*
	* Copyright © 2019 Raspberry Pi
	*
	* Based in part on v3d driver which is:
	*
	* Copyright © 2014-2017 Broadcom
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice (including the next
	* paragraph) shall be included in all copies or substantial portions of the
	* Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	* IN THE SOFTWARE.
	*/

	#include "v3dv_private.h"

	static bool
	descriptor_type_is_dynamic(VkDescriptorType type)
	{
	switch (type) {
	case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER:
	case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER:
	return false;
	break;
	case VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC:
	case VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC:
	return true;
	break;
	default:
	assert(!"descriptor type not supported.\n");
	break;
	}
	return false;
	}

	static struct v3dv_descriptor *
	get_descriptor(struct v3dv_descriptor_state *descriptor_state,
	struct v3dv_descriptor_map *map,
	struct v3dv_pipeline_layout *pipeline_layout,
	uint32_t index,
	uint32_t *dynamic_offset)
	{
	assert(index >= 0 && index < map->num_desc);

	uint32_t set_number = map->set[index];
	assert(descriptor_state->valid & 1 << set_number);

	struct v3dv_descriptor_set *set =
	descriptor_state->descriptor_sets[set_number];
	assert(set);

	uint32_t binding_number = map->binding[index];
	assert(binding_number < set->layout->binding_count);

	const struct v3dv_descriptor_set_binding_layout *binding_layout =
	&set->layout->binding[binding_number];

	uint32_t array_index = map->array_index[index];
	assert(array_index < binding_layout->array_size);

	if (descriptor_type_is_dynamic(binding_layout->type)) {
	uint32_t dynamic_offset_index =
	pipeline_layout->set[set_number].dynamic_offset_start +
	binding_layout->dynamic_offset_index + array_index;

	*dynamic_offset = descriptor_state->dynamic_offsets[dynamic_offset_index];
	}

	return &set->descriptors[binding_layout->descriptor_index + array_index];
	}

	/*
	* This method checks if the ubo used for push constants is needed to be
	* updated or not.
	*
	* push contants ubo is only used for push constants accessed by a non-const
	* index.
	*
	* FIXME: right now for this cases we are uploading the full
	* push_constants_data. An improvement would be to upload only the data that
	* we need to rely on a UBO.
	*/
	static void
	check_push_constants_ubo(struct v3dv_cmd_buffer *cmd_buffer)
	{
	if (!(cmd_buffer->state.dirty & V3DV_CMD_DIRTY_PUSH_CONSTANTS) \|\|
	cmd_buffer->state.pipeline->layout->push_constant_size == 0)
	return;

	if (cmd_buffer->push_constants_descriptor.bo == NULL) {
	cmd_buffer->push_constants_descriptor.bo =
	v3dv_bo_alloc(cmd_buffer->device, MAX_PUSH_CONSTANTS_SIZE, "push constants");

	if (!cmd_buffer->push_constants_descriptor.bo) {
	fprintf(stderr, "Failed to allocate memory for push constants\n");
	abort();
	}

	bool ok = v3dv_bo_map(cmd_buffer->device,
	cmd_buffer->push_constants_descriptor.bo,
	MAX_PUSH_CONSTANTS_SIZE);
	if (!ok) {
	fprintf(stderr, "failed to map push constants buffer\n");
	abort();
	}
	} else {
	if (cmd_buffer->push_constants_descriptor.offset + MAX_PUSH_CONSTANTS_SIZE <=
	cmd_buffer->push_constants_descriptor.bo->size) {
	cmd_buffer->push_constants_descriptor.offset += MAX_PUSH_CONSTANTS_SIZE;
	} else {
	/* FIXME: we got out of space for push descriptors. Should we create
	* a new bo? This could be easier with a uploader
	*/
	}
	}

	memcpy(cmd_buffer->push_constants_descriptor.bo->map +
	cmd_buffer->push_constants_descriptor.offset,
	cmd_buffer->push_constants_data,
	MAX_PUSH_CONSTANTS_SIZE);

	cmd_buffer->state.dirty &= ~V3DV_CMD_DIRTY_PUSH_CONSTANTS;
	}

	struct v3dv_cl_reloc
	v3dv_write_uniforms(struct v3dv_cmd_buffer *cmd_buffer,
	struct v3dv_pipeline_stage *p_stage)
	{
	struct v3d_uniform_list *uinfo = &p_stage->prog_data.base->uniforms;
	struct v3dv_dynamic_state *dynamic = &cmd_buffer->state.dynamic;
	struct v3dv_descriptor_state *descriptor_state =
	&cmd_buffer->state.descriptor_state;
	struct v3dv_pipeline *pipeline = p_stage->pipeline;

	struct v3dv_job *job = cmd_buffer->state.job;
	assert(job);

	/* The hardware always pre-fetches the next uniform (also when there
	* aren't any), so we always allocate space for an extra slot. This
	* fixes MMU exceptions reported since Linux kernel 5.4 when the
	* uniforms fill up the tail bytes of a page in the indirect
	* BO. In that scenario, when the hardware pre-fetches after reading
	* the last uniform it will read beyond the end of the page and trigger
	* the MMU exception.
	*/
	v3dv_cl_ensure_space(&job->indirect, (uinfo->count + 1) * 4, 4);

	struct v3dv_cl_reloc uniform_stream = v3dv_cl_get_address(&job->indirect);

	struct v3dv_cl_out *uniforms = cl_start(&job->indirect);

	for (int i = 0; i < uinfo->count; i++) {
	uint32_t data = uinfo->data[i];

	switch (uinfo->contents[i]) {
	case QUNIFORM_CONSTANT:
	cl_aligned_u32(&uniforms, data);
	break;

	case QUNIFORM_UNIFORM:
	assert(pipeline->use_push_constants);
	cl_aligned_u32(&uniforms, cmd_buffer->push_constants_data[data]);
	break;

	case QUNIFORM_VIEWPORT_X_SCALE:
	cl_aligned_f(&uniforms, dynamic->viewport.scale[0][0] * 256.0f);
	break;

	case QUNIFORM_VIEWPORT_Y_SCALE:
	cl_aligned_f(&uniforms, dynamic->viewport.scale[0][1] * 256.0f);
	break;

	case QUNIFORM_VIEWPORT_Z_OFFSET:
	cl_aligned_f(&uniforms, dynamic->viewport.translate[0][2]);
	break;

	case QUNIFORM_VIEWPORT_Z_SCALE:
	cl_aligned_f(&uniforms, dynamic->viewport.scale[0][2]);
	break;

	case QUNIFORM_SSBO_OFFSET:
	case QUNIFORM_UBO_ADDR: {
	struct v3dv_descriptor_map *map =
	uinfo->contents[i] == QUNIFORM_UBO_ADDR ?
	&pipeline->ubo_map : &pipeline->ssbo_map;

	uint32_t offset =
	uinfo->contents[i] == QUNIFORM_UBO_ADDR ?
	v3d_unit_data_get_offset(data) :
	0; /* FIXME */

	uint32_t dynamic_offset = 0;

	/* For ubos, index is shifted, as 0 is reserved for push constants.
	*/
	struct v3dv_descriptor *descriptor = NULL;
	if (uinfo->contents[i] == QUNIFORM_UBO_ADDR &&
	v3d_unit_data_get_unit(data) == 0) {
	/* This calls is to ensure that the push_constant_ubo is
	* updated. It already take into account it is should do the
	* update or not
	*/
	check_push_constants_ubo(cmd_buffer);

	descriptor = &cmd_buffer->push_constants_descriptor;
	} else {
	uint32_t index =
	uinfo->contents[i] == QUNIFORM_UBO_ADDR ?
	v3d_unit_data_get_unit(data) - 1 :
	data;

	descriptor =
	get_descriptor(descriptor_state, map,
	pipeline->layout,
	index, &dynamic_offset);
	assert(descriptor);
	}

	cl_aligned_reloc(&job->indirect, &uniforms,
	descriptor->bo,
	descriptor->offset + offset + dynamic_offset);
	break;
	}

	default:
	unreachable("unsupported quniform_contents uniform type\n");
	}
	}

	cl_end(&job->indirect, uniforms);

	return uniform_stream;
	}