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authorKristian Høgsberg <krh@bitplanet.net>2009-11-17 09:46:56 -0500
committerKristian Høgsberg <krh@bitplanet.net>2009-11-17 10:54:11 -0500
commit9dd3613073aa2491cef440725fdfa0cf1e8f1a42 (patch)
tree956c84be2fae4b4e6de2840a94d30dffa6573066 /bsd-core/drm_context.c
parenta66cf9ce68bdf9bd887f91a38ced4b59c129b3c7 (diff)
Drop shared-core, bsd-core, linux-core and scripts subdirs
Diffstat (limited to 'bsd-core/drm_context.c')
-rw-r--r--bsd-core/drm_context.c320
1 files changed, 0 insertions, 320 deletions
diff --git a/bsd-core/drm_context.c b/bsd-core/drm_context.c
deleted file mode 100644
index 4dddd9c8..00000000
--- a/bsd-core/drm_context.c
+++ /dev/null
@@ -1,320 +0,0 @@
-/*-
- * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * 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 (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
- * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
- *
- * Authors:
- * Rickard E. (Rik) Faith <faith@valinux.com>
- * Gareth Hughes <gareth@valinux.com>
- *
- */
-
-/** @file drm_context.c
- * Implementation of the context management ioctls.
- */
-
-#include "drmP.h"
-
-/* ================================================================
- * Context bitmap support
- */
-
-void drm_ctxbitmap_free(struct drm_device *dev, int ctx_handle)
-{
- if (ctx_handle < 0 || ctx_handle >= DRM_MAX_CTXBITMAP ||
- dev->ctx_bitmap == NULL) {
- DRM_ERROR("Attempt to free invalid context handle: %d\n",
- ctx_handle);
- return;
- }
-
- DRM_LOCK();
- clear_bit(ctx_handle, dev->ctx_bitmap);
- dev->context_sareas[ctx_handle] = NULL;
- DRM_UNLOCK();
- return;
-}
-
-int drm_ctxbitmap_next(struct drm_device *dev)
-{
- int bit;
-
- if (dev->ctx_bitmap == NULL)
- return -1;
-
- DRM_LOCK();
- bit = find_first_zero_bit(dev->ctx_bitmap, DRM_MAX_CTXBITMAP);
- if (bit >= DRM_MAX_CTXBITMAP) {
- DRM_UNLOCK();
- return -1;
- }
-
- set_bit(bit, dev->ctx_bitmap);
- DRM_DEBUG("drm_ctxbitmap_next bit : %d\n", bit);
- if ((bit+1) > dev->max_context) {
- dev->max_context = (bit+1);
- if (dev->context_sareas != NULL) {
- drm_local_map_t **ctx_sareas;
-
- ctx_sareas = realloc(dev->context_sareas,
- dev->max_context * sizeof(*dev->context_sareas),
- DRM_MEM_SAREA, M_NOWAIT);
- if (ctx_sareas == NULL) {
- clear_bit(bit, dev->ctx_bitmap);
- DRM_UNLOCK();
- return -1;
- }
- dev->context_sareas = ctx_sareas;
- dev->context_sareas[bit] = NULL;
- } else {
- /* max_context == 1 at this point */
- dev->context_sareas = malloc(dev->max_context *
- sizeof(*dev->context_sareas), DRM_MEM_SAREA,
- M_NOWAIT);
- if (dev->context_sareas == NULL) {
- clear_bit(bit, dev->ctx_bitmap);
- DRM_UNLOCK();
- return -1;
- }
- dev->context_sareas[bit] = NULL;
- }
- }
- DRM_UNLOCK();
- return bit;
-}
-
-int drm_ctxbitmap_init(struct drm_device *dev)
-{
- int i;
- int temp;
-
- DRM_LOCK();
- dev->ctx_bitmap = malloc(PAGE_SIZE, DRM_MEM_CTXBITMAP,
- M_NOWAIT | M_ZERO);
- if (dev->ctx_bitmap == NULL) {
- DRM_UNLOCK();
- return ENOMEM;
- }
- dev->context_sareas = NULL;
- dev->max_context = -1;
- DRM_UNLOCK();
-
- for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
- temp = drm_ctxbitmap_next(dev);
- DRM_DEBUG("drm_ctxbitmap_init : %d\n", temp);
- }
-
- return 0;
-}
-
-void drm_ctxbitmap_cleanup(struct drm_device *dev)
-{
- DRM_LOCK();
- if (dev->context_sareas != NULL)
- free(dev->context_sareas, DRM_MEM_SAREA);
- free(dev->ctx_bitmap, DRM_MEM_CTXBITMAP);
- DRM_UNLOCK();
-}
-
-/* ================================================================
- * Per Context SAREA Support
- */
-
-int drm_getsareactx(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_ctx_priv_map *request = data;
- drm_local_map_t *map;
-
- DRM_LOCK();
- if (dev->max_context < 0 ||
- request->ctx_id >= (unsigned) dev->max_context) {
- DRM_UNLOCK();
- return EINVAL;
- }
-
- map = dev->context_sareas[request->ctx_id];
- DRM_UNLOCK();
-
- request->handle = map->handle;
-
- return 0;
-}
-
-int drm_setsareactx(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_ctx_priv_map *request = data;
- drm_local_map_t *map = NULL;
-
- DRM_LOCK();
- TAILQ_FOREACH(map, &dev->maplist, link) {
- if (map->handle == request->handle) {
- if (dev->max_context < 0)
- goto bad;
- if (request->ctx_id >= (unsigned) dev->max_context)
- goto bad;
- dev->context_sareas[request->ctx_id] = map;
- DRM_UNLOCK();
- return 0;
- }
- }
-
-bad:
- DRM_UNLOCK();
- return EINVAL;
-}
-
-/* ================================================================
- * The actual DRM context handling routines
- */
-
-int drm_context_switch(struct drm_device *dev, int old, int new)
-{
- if (test_and_set_bit(0, &dev->context_flag)) {
- DRM_ERROR("Reentering -- FIXME\n");
- return EBUSY;
- }
-
- DRM_DEBUG("Context switch from %d to %d\n", old, new);
-
- if (new == dev->last_context) {
- clear_bit(0, &dev->context_flag);
- return 0;
- }
-
- return 0;
-}
-
-int drm_context_switch_complete(struct drm_device *dev, int new)
-{
- dev->last_context = new; /* PRE/POST: This is the _only_ writer. */
-
- if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
- DRM_ERROR("Lock isn't held after context switch\n");
- }
-
- /* If a context switch is ever initiated
- when the kernel holds the lock, release
- that lock here. */
- clear_bit(0, &dev->context_flag);
-
- return 0;
-}
-
-int drm_resctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_ctx_res *res = data;
- struct drm_ctx ctx;
- int i;
-
- if (res->count >= DRM_RESERVED_CONTEXTS) {
- bzero(&ctx, sizeof(ctx));
- for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
- ctx.handle = i;
- if (DRM_COPY_TO_USER(&res->contexts[i],
- &ctx, sizeof(ctx)))
- return EFAULT;
- }
- }
- res->count = DRM_RESERVED_CONTEXTS;
-
- return 0;
-}
-
-int drm_addctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_ctx *ctx = data;
-
- ctx->handle = drm_ctxbitmap_next(dev);
- if (ctx->handle == DRM_KERNEL_CONTEXT) {
- /* Skip kernel's context and get a new one. */
- ctx->handle = drm_ctxbitmap_next(dev);
- }
- DRM_DEBUG("%d\n", ctx->handle);
- if (ctx->handle == -1) {
- DRM_DEBUG("Not enough free contexts.\n");
- /* Should this return -EBUSY instead? */
- return ENOMEM;
- }
-
- if (dev->driver->context_ctor && ctx->handle != DRM_KERNEL_CONTEXT) {
- DRM_LOCK();
- dev->driver->context_ctor(dev, ctx->handle);
- DRM_UNLOCK();
- }
-
- return 0;
-}
-
-int drm_modctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- /* This does nothing */
- return 0;
-}
-
-int drm_getctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_ctx *ctx = data;
-
- /* This is 0, because we don't handle any context flags */
- ctx->flags = 0;
-
- return 0;
-}
-
-int drm_switchctx(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct drm_ctx *ctx = data;
-
- DRM_DEBUG("%d\n", ctx->handle);
- return drm_context_switch(dev, dev->last_context, ctx->handle);
-}
-
-int drm_newctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_ctx *ctx = data;
-
- DRM_DEBUG("%d\n", ctx->handle);
- drm_context_switch_complete(dev, ctx->handle);
-
- return 0;
-}
-
-int drm_rmctx(struct drm_device *dev, void *data, struct drm_file *file_priv)
-{
- struct drm_ctx *ctx = data;
-
- DRM_DEBUG("%d\n", ctx->handle);
- if (ctx->handle != DRM_KERNEL_CONTEXT) {
- if (dev->driver->context_dtor) {
- DRM_LOCK();
- dev->driver->context_dtor(dev, ctx->handle);
- DRM_UNLOCK();
- }
-
- drm_ctxbitmap_free(dev, ctx->handle);
- }
-
- return 0;
-}