From 5141da97f680235d10d74737d5444963d2080072 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Tue, 22 Apr 2003 10:13:14 +0000 Subject: Move a bunch of gamma-specific code into a gamma-specific file. Restore the kooky DRM(write_string) code for gamma. --- linux-core/drm_context.c | 371 ----------------------------------------------- 1 file changed, 371 deletions(-) (limited to 'linux-core') diff --git a/linux-core/drm_context.c b/linux-core/drm_context.c index fab0885b..944e1be2 100644 --- a/linux-core/drm_context.c +++ b/linux-core/drm_context.c @@ -36,8 +36,6 @@ #define __NO_VERSION__ #include "drmP.h" -#if __HAVE_CTX_BITMAP - /* ================================================================ * Context bitmap support */ @@ -404,372 +402,3 @@ int DRM(rmctx)( struct inode *inode, struct file *filp, return 0; } - -#else /* __HAVE_CTX_BITMAP */ - -/* ================================================================ - * Old-style context support - */ - - -int DRM(context_switch)(drm_device_t *dev, int old, int new) -{ - char buf[64]; - drm_queue_t *q; - -#if 0 - atomic_inc(&dev->total_ctx); -#endif - - if (test_and_set_bit(0, &dev->context_flag)) { - DRM_ERROR("Reentering -- FIXME\n"); - return -EBUSY; - } - -#if __HAVE_DMA_HISTOGRAM - dev->ctx_start = get_cycles(); -#endif - - DRM_DEBUG("Context switch from %d to %d\n", old, new); - - if (new >= dev->queue_count) { - clear_bit(0, &dev->context_flag); - return -EINVAL; - } - - if (new == dev->last_context) { - clear_bit(0, &dev->context_flag); - return 0; - } - - q = dev->queuelist[new]; - atomic_inc(&q->use_count); - if (atomic_read(&q->use_count) == 1) { - atomic_dec(&q->use_count); - clear_bit(0, &dev->context_flag); - return -EINVAL; - } - - if (DRM(flags) & DRM_FLAG_NOCTX) { - DRM(context_switch_complete)(dev, new); - } - - atomic_dec(&q->use_count); - - return 0; -} - -int DRM(context_switch_complete)(drm_device_t *dev, int new) -{ - drm_device_dma_t *dma = dev->dma; - - dev->last_context = new; /* PRE/POST: This is the _only_ writer. */ - dev->last_switch = jiffies; - - if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("Lock isn't held after context switch\n"); - } - - if (!dma || !(dma->next_buffer && dma->next_buffer->while_locked)) { - if (DRM(lock_free)(dev, &dev->lock.hw_lock->lock, - DRM_KERNEL_CONTEXT)) { - DRM_ERROR("Cannot free lock\n"); - } - } - -#if __HAVE_DMA_HISTOGRAM - atomic_inc(&dev->histo.ctx[DRM(histogram_slot)(get_cycles() - - dev->ctx_start)]); - -#endif - clear_bit(0, &dev->context_flag); - wake_up_interruptible(&dev->context_wait); - - return 0; -} - -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; - - DRM(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 = DRM(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 = DRM(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 DRM(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 DRM(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 DRM(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 DRM(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 DRM(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 DRM(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 DRM(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 = DRM(waitlist_get)(&q->waitlist))) { - DRM(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; -} - -#endif /* __HAVE_CTX_BITMAP */ -- cgit v1.2.3