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-rw-r--r--linux/gamma_context.c319
1 files changed, 0 insertions, 319 deletions
diff --git a/linux/gamma_context.c b/linux/gamma_context.c
deleted file mode 100644
index d94054a2..00000000
--- a/linux/gamma_context.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/* context.c -- IOCTLs for contexts and DMA queues -*- linux-c -*-
- * Created: Tue Feb 2 08:37:54 1999 by faith@precisioninsight.com
- *
- * Copyright 1999 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
- * PRECISION INSIGHT 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>
- *
- */
-
-#define __NO_VERSION__
-#include "gamma.h"
-#include "drmP.h"
-
-static int drm_init_queue(drm_device_t *dev, drm_queue_t *q, drm_ctx_t *ctx)
-{
- DRM_DEBUG("\n");
-
- if (atomic_read(&q->use_count) != 1
- || atomic_read(&q->finalization)
- || atomic_read(&q->block_count)) {
- DRM_ERROR("New queue is already in use: u%d f%d b%d\n",
- atomic_read(&q->use_count),
- atomic_read(&q->finalization),
- atomic_read(&q->block_count));
- }
-
- atomic_set(&q->finalization, 0);
- atomic_set(&q->block_count, 0);
- atomic_set(&q->block_read, 0);
- atomic_set(&q->block_write, 0);
- atomic_set(&q->total_queued, 0);
- atomic_set(&q->total_flushed, 0);
- atomic_set(&q->total_locks, 0);
-
- init_waitqueue_head(&q->write_queue);
- init_waitqueue_head(&q->read_queue);
- init_waitqueue_head(&q->flush_queue);
-
- q->flags = ctx->flags;
-
- gamma_waitlist_create(&q->waitlist, dev->dma->buf_count);
-
- return 0;
-}
-
-
-/* drm_alloc_queue:
-PRE: 1) dev->queuelist[0..dev->queue_count] is allocated and will not
- disappear (so all deallocation must be done after IOCTLs are off)
- 2) dev->queue_count < dev->queue_slots
- 3) dev->queuelist[i].use_count == 0 and
- dev->queuelist[i].finalization == 0 if i not in use
-POST: 1) dev->queuelist[i].use_count == 1
- 2) dev->queue_count < dev->queue_slots */
-
-static int drm_alloc_queue(drm_device_t *dev)
-{
- int i;
- drm_queue_t *queue;
- int oldslots;
- int newslots;
- /* Check for a free queue */
- for (i = 0; i < dev->queue_count; i++) {
- atomic_inc(&dev->queuelist[i]->use_count);
- if (atomic_read(&dev->queuelist[i]->use_count) == 1
- && !atomic_read(&dev->queuelist[i]->finalization)) {
- DRM_DEBUG("%d (free)\n", i);
- return i;
- }
- atomic_dec(&dev->queuelist[i]->use_count);
- }
- /* Allocate a new queue */
- down(&dev->struct_sem);
-
- queue = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES);
- memset(queue, 0, sizeof(*queue));
- atomic_set(&queue->use_count, 1);
-
- ++dev->queue_count;
- if (dev->queue_count >= dev->queue_slots) {
- oldslots = dev->queue_slots * sizeof(*dev->queuelist);
- if (!dev->queue_slots) dev->queue_slots = 1;
- dev->queue_slots *= 2;
- newslots = dev->queue_slots * sizeof(*dev->queuelist);
-
- dev->queuelist = gamma_realloc(dev->queuelist,
- oldslots,
- newslots,
- DRM_MEM_QUEUES);
- if (!dev->queuelist) {
- up(&dev->struct_sem);
- DRM_DEBUG("out of memory\n");
- return -ENOMEM;
- }
- }
- dev->queuelist[dev->queue_count-1] = queue;
-
- up(&dev->struct_sem);
- DRM_DEBUG("%d (new)\n", dev->queue_count - 1);
- return dev->queue_count - 1;
-}
-
-int gamma_resctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_ctx_res_t res;
- drm_ctx_t ctx;
- int i;
-
- DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS);
- if (copy_from_user(&res, (drm_ctx_res_t *)arg, sizeof(res)))
- return -EFAULT;
- if (res.count >= DRM_RESERVED_CONTEXTS) {
- memset(&ctx, 0, sizeof(ctx));
- for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) {
- ctx.handle = i;
- if (copy_to_user(&res.contexts[i],
- &i,
- sizeof(i)))
- return -EFAULT;
- }
- }
- res.count = DRM_RESERVED_CONTEXTS;
- if (copy_to_user((drm_ctx_res_t *)arg, &res, sizeof(res)))
- return -EFAULT;
- return 0;
-}
-
-
-int gamma_addctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
- return -EFAULT;
- if ((ctx.handle = drm_alloc_queue(dev)) == DRM_KERNEL_CONTEXT) {
- /* Init kernel's context and get a new one. */
- drm_init_queue(dev, dev->queuelist[ctx.handle], &ctx);
- ctx.handle = drm_alloc_queue(dev);
- }
- drm_init_queue(dev, dev->queuelist[ctx.handle], &ctx);
- DRM_DEBUG("%d\n", ctx.handle);
- if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
- return -EFAULT;
- return 0;
-}
-
-int gamma_modctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_ctx_t ctx;
- drm_queue_t *q;
-
- if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
- return -EFAULT;
-
- DRM_DEBUG("%d\n", ctx.handle);
-
- if (ctx.handle < 0 || ctx.handle >= dev->queue_count) return -EINVAL;
- q = dev->queuelist[ctx.handle];
-
- atomic_inc(&q->use_count);
- if (atomic_read(&q->use_count) == 1) {
- /* No longer in use */
- atomic_dec(&q->use_count);
- return -EINVAL;
- }
-
- if (DRM_BUFCOUNT(&q->waitlist)) {
- atomic_dec(&q->use_count);
- return -EBUSY;
- }
-
- q->flags = ctx.flags;
-
- atomic_dec(&q->use_count);
- return 0;
-}
-
-int gamma_getctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_ctx_t ctx;
- drm_queue_t *q;
-
- if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
- return -EFAULT;
-
- DRM_DEBUG("%d\n", ctx.handle);
-
- if (ctx.handle >= dev->queue_count) return -EINVAL;
- q = dev->queuelist[ctx.handle];
-
- atomic_inc(&q->use_count);
- if (atomic_read(&q->use_count) == 1) {
- /* No longer in use */
- atomic_dec(&q->use_count);
- return -EINVAL;
- }
-
- ctx.flags = q->flags;
- atomic_dec(&q->use_count);
-
- if (copy_to_user((drm_ctx_t *)arg, &ctx, sizeof(ctx)))
- return -EFAULT;
-
- return 0;
-}
-
-int gamma_switchctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
- return -EFAULT;
- DRM_DEBUG("%d\n", ctx.handle);
- return drm_context_switch(dev, dev->last_context, ctx.handle);
-}
-
-int gamma_newctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_ctx_t ctx;
-
- if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
- return -EFAULT;
- DRM_DEBUG("%d\n", ctx.handle);
- drm_context_switch_complete(dev, ctx.handle);
-
- return 0;
-}
-
-int gamma_rmctx(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_ctx_t ctx;
- drm_queue_t *q;
- drm_buf_t *buf;
-
- if (copy_from_user(&ctx, (drm_ctx_t *)arg, sizeof(ctx)))
- return -EFAULT;
- DRM_DEBUG("%d\n", ctx.handle);
-
- if (ctx.handle >= dev->queue_count) return -EINVAL;
- q = dev->queuelist[ctx.handle];
-
- atomic_inc(&q->use_count);
- if (atomic_read(&q->use_count) == 1) {
- /* No longer in use */
- atomic_dec(&q->use_count);
- return -EINVAL;
- }
-
- atomic_inc(&q->finalization); /* Mark queue in finalization state */
- atomic_sub(2, &q->use_count); /* Mark queue as unused (pending
- finalization) */
-
- while (test_and_set_bit(0, &dev->interrupt_flag)) {
- schedule();
- if (signal_pending(current)) {
- clear_bit(0, &dev->interrupt_flag);
- return -EINTR;
- }
- }
- /* Remove queued buffers */
- while ((buf = gamma_waitlist_get(&q->waitlist))) {
- gamma_free_buffer(dev, buf);
- }
- clear_bit(0, &dev->interrupt_flag);
-
- /* Wakeup blocked processes */
- wake_up_interruptible(&q->read_queue);
- wake_up_interruptible(&q->write_queue);
- wake_up_interruptible(&q->flush_queue);
-
- /* Finalization over. Queue is made
- available when both use_count and
- finalization become 0, which won't
- happen until all the waiting processes
- stop waiting. */
- atomic_dec(&q->finalization);
- return 0;
-}
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