/*
 * Copyright (C) 2016-2023 Oracle and/or its affiliates.
 *
 * This file is part of VirtualBox base platform packages, as
 * available from https://www.virtualbox.org.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation, in version 3 of the
 * License.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <https://www.gnu.org/licenses>.
 *
 * SPDX-License-Identifier: GPL-3.0-only
 */

/**********************************************************
 * Copyright 2009-2015 VMware, Inc.  All rights reserved.
 *
 * 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 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 "../wddm_screen.h"
#include "vmw_fence.h"
#include "vmw_context.h"
#include "vmwgfx_drm.h"

#include "util/os_file.h"
#include "util/u_memory.h"
#include "pipe/p_compiler.h"
#include "util/u_hash_table.h"

/* Called from vmw_drm_create_screen(), creates and initializes the
 * vmw_winsys_screen structure, which is the main entity in this
 * module.
 * First, check whether a vmw_winsys_screen object already exists for
 * this device, and in that case return that one, making sure that we
 * have our own file descriptor open to DRM.
 */

struct vmw_winsys_screen_wddm *
vmw_winsys_create_wddm(const WDDMGalliumDriverEnv *pEnv)
{
   struct vmw_winsys_screen_wddm *vws_wddm;
   struct vmw_winsys_screen *vws;

   if (   pEnv->pHWInfo == NULL
       || pEnv->pHWInfo->u32HwType != VBOX_GA_HW_TYPE_VMSVGA)
      return NULL;

   vws_wddm = CALLOC_STRUCT(vmw_winsys_screen_wddm);
   vws = &vws_wddm->base;
   if (!vws)
      goto out_no_vws;

   vws_wddm->pEnv = pEnv;
   vws_wddm->HwInfo = pEnv->pHWInfo->u.svga;

   vws->device = 0; /* not used */
   vws->open_count = 1;
   vws->ioctl.drm_fd = -1; /* not used */
   vws->force_coherent = FALSE;
   if (!vmw_ioctl_init(vws))
      goto out_no_ioctl;

   vws->base.have_gb_dma = !vws->force_coherent;
   vws->base.need_to_rebind_resources = FALSE;
   vws->base.have_transfer_from_buffer_cmd = vws->base.have_vgpu10;
   vws->base.have_constant_buffer_offset_cmd = FALSE;
   vws->cache_maps = FALSE;
   vws->fence_ops = vmw_fence_ops_create(vws);
   if (!vws->fence_ops)
      goto out_no_fence_ops;

   if(!vmw_pools_init(vws))
      goto out_no_pools;

   if (!vmw_winsys_screen_init_svga(vws))
      goto out_no_svga;

   cnd_init(&vws->cs_cond);
   mtx_init(&vws->cs_mutex, mtx_plain);

   return vws_wddm;
out_no_svga:
   vmw_pools_cleanup(vws);
out_no_pools:
   vws->fence_ops->destroy(vws->fence_ops);
out_no_fence_ops:
   vmw_ioctl_cleanup(vws);
out_no_ioctl:
   FREE(vws);
out_no_vws:
   return NULL;
}

void
vmw_winsys_destroy(struct vmw_winsys_screen *vws)
{
   if (--vws->open_count == 0) {
      vmw_pools_cleanup(vws);
      vws->fence_ops->destroy(vws->fence_ops);
      vmw_ioctl_cleanup(vws);
      mtx_destroy(&vws->cs_mutex);
      cnd_destroy(&vws->cs_cond);
      FREE(vws);
   }
}