/*
 * Copyright © 2020 Valve Corporation
 *
 * based on amdgpu winsys.
 * Copyright © 2016 Red Hat.
 * Copyright © 2016 Bas Nieuwenhuizen
 *
 * SPDX-License-Identifier: MIT
 */

#include "radv_null_cs.h"
#include "util/u_memory.h"

struct radv_null_cs {
   struct radeon_cmdbuf base;
   struct radv_null_winsys *ws;
};

static inline struct radv_null_cs *
radv_null_cs(struct radeon_cmdbuf *base)
{
   return (struct radv_null_cs *)base;
}

static VkResult
radv_null_ctx_create(struct radeon_winsys *_ws, enum radeon_ctx_priority priority, struct radeon_winsys_ctx **rctx)
{
   struct radv_null_ctx *ctx = CALLOC_STRUCT(radv_null_ctx);

   if (!ctx)
      return VK_ERROR_OUT_OF_HOST_MEMORY;

   *rctx = (struct radeon_winsys_ctx *)ctx;
   return VK_SUCCESS;
}

static void
radv_null_ctx_destroy(struct radeon_winsys_ctx *rwctx)
{
   struct radv_null_ctx *ctx = (struct radv_null_ctx *)rwctx;
   FREE(ctx);
}

static enum radeon_bo_domain
radv_null_cs_domain(const struct radeon_winsys *_ws)
{
   return RADEON_DOMAIN_GTT;
}

static struct radeon_cmdbuf *
radv_null_cs_create(struct radeon_winsys *ws, enum amd_ip_type ip_type, UNUSED bool is_secondary)
{
   struct radv_null_cs *cs = calloc(1, sizeof(struct radv_null_cs));
   if (!cs)
      return NULL;

   cs->ws = radv_null_winsys(ws);

   cs->base.buf = malloc(16384);
   cs->base.max_dw = 4096;
   if (!cs->base.buf) {
      FREE(cs);
      return NULL;
   }

   return &cs->base;
}

static void
radv_null_cs_pad(struct radeon_cmdbuf *_cs, unsigned leave_dw_space)
{
}

static VkResult
radv_null_cs_finalize(struct radeon_cmdbuf *_cs)
{
   return VK_SUCCESS;
}

static void
radv_null_cs_destroy(struct radeon_cmdbuf *rcs)
{
   struct radv_null_cs *cs = radv_null_cs(rcs);
   FREE(cs->base.buf);
   FREE(cs);
}

void
radv_null_cs_init_functions(struct radv_null_winsys *ws)
{
   ws->base.ctx_create = radv_null_ctx_create;
   ws->base.ctx_destroy = radv_null_ctx_destroy;
   ws->base.cs_domain = radv_null_cs_domain;
   ws->base.cs_create = radv_null_cs_create;
   ws->base.cs_finalize = radv_null_cs_finalize;
   ws->base.cs_destroy = radv_null_cs_destroy;
   ws->base.cs_pad = radv_null_cs_pad;
}