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/**********************************************************
* 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 "vmw_screen.h"
#include "vmw_fence.h"
#include "vmw_context.h"
#include "util/u_memory.h"
#include "pipe/p_compiler.h"
#include "util/u_hash_table.h"
#ifdef MAJOR_IN_MKDEV
#include <sys/mkdev.h>
#endif
#ifdef MAJOR_IN_SYSMACROS
#include <sys/sysmacros.h>
#endif
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
static struct hash_table *dev_hash = NULL;
static bool vmw_dev_compare(const void *key1, const void *key2)
{
return (major(*(dev_t *)key1) == major(*(dev_t *)key2) &&
minor(*(dev_t *)key1) == minor(*(dev_t *)key2));
}
static uint32_t vmw_dev_hash(const void *key)
{
return (major(*(dev_t *) key) << 16) | minor(*(dev_t *) key);
}
/* 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 *
vmw_winsys_create( int fd )
{
struct vmw_winsys_screen *vws;
struct stat stat_buf;
const char *getenv_val;
if (dev_hash == NULL) {
dev_hash = _mesa_hash_table_create(NULL, vmw_dev_hash, vmw_dev_compare);
if (dev_hash == NULL)
return NULL;
}
if (fstat(fd, &stat_buf))
return NULL;
vws = util_hash_table_get(dev_hash, &stat_buf.st_rdev);
if (vws) {
vws->open_count++;
return vws;
}
vws = CALLOC_STRUCT(vmw_winsys_screen);
if (!vws)
goto out_no_vws;
vws->device = stat_buf.st_rdev;
vws->open_count = 1;
vws->ioctl.drm_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
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;
getenv_val = getenv("SVGA_FORCE_KERNEL_UNMAPS");
vws->cache_maps = !getenv_val || strcmp(getenv_val, "0") == 0;
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;
_mesa_hash_table_insert(dev_hash, &vws->device, vws);
cnd_init(&vws->cs_cond);
mtx_init(&vws->cs_mutex, mtx_plain);
return vws;
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:
close(vws->ioctl.drm_fd);
FREE(vws);
out_no_vws:
return NULL;
}
void
vmw_winsys_destroy(struct vmw_winsys_screen *vws)
{
if (--vws->open_count == 0) {
_mesa_hash_table_remove_key(dev_hash, &vws->device);
vmw_pools_cleanup(vws);
vws->fence_ops->destroy(vws->fence_ops);
vmw_ioctl_cleanup(vws);
close(vws->ioctl.drm_fd);
mtx_destroy(&vws->cs_mutex);
cnd_destroy(&vws->cs_cond);
FREE(vws);
}
}
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