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| /********************************************************** |
| * Copyright 2009 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" |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <unistd.h> |
| |
| static struct util_hash_table *dev_hash = NULL; |
| |
| static int vmw_dev_compare(void *key1, void *key2) |
| { |
| return (major(*(dev_t *)key1) == major(*(dev_t *)key2) && |
| minor(*(dev_t *)key1) == minor(*(dev_t *)key2)) ? 0 : 1; |
| } |
| |
| static unsigned vmw_dev_hash(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, boolean use_old_scanout_flag ) |
| { |
| struct vmw_winsys_screen *vws; |
| struct stat stat_buf; |
| |
| if (dev_hash == NULL) { |
| dev_hash = util_hash_table_create(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 = dup(fd); |
| vws->use_old_scanout_flag = use_old_scanout_flag; |
| vws->base.have_gb_dma = TRUE; |
| |
| if (!vmw_ioctl_init(vws)) |
| goto out_no_ioctl; |
| |
| 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; |
| |
| if (util_hash_table_set(dev_hash, &vws->device, vws) != PIPE_OK) |
| goto out_no_hash_insert; |
| |
| return vws; |
| out_no_hash_insert: |
| 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) { |
| util_hash_table_remove(dev_hash, &vws->device); |
| vmw_pools_cleanup(vws); |
| vws->fence_ops->destroy(vws->fence_ops); |
| vmw_ioctl_cleanup(vws); |
| close(vws->ioctl.drm_fd); |
| FREE(vws); |
| } |
| } |