From 1430163b4bbf7b00367ea1066c1c5fe85dbeefed Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sun, 29 Aug 2004 12:04:35 +0000 Subject: Drop GAMMA DRM from a great height ... --- linux/gamma_context.h | 506 -------------------------------------------------- 1 file changed, 506 deletions(-) delete mode 100644 linux/gamma_context.h (limited to 'linux/gamma_context.h') diff --git a/linux/gamma_context.h b/linux/gamma_context.h deleted file mode 100644 index 0358f679..00000000 --- a/linux/gamma_context.h +++ /dev/null @@ -1,506 +0,0 @@ -/* drm_context.h -- IOCTLs for generic contexts -*- linux-c -*- - * Created: Fri Nov 24 18:31:37 2000 by gareth@valinux.com - * - * 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 - * Gareth Hughes - * ChangeLog: - * 2001-11-16 Torsten Duwe - * added context constructor/destructor hooks, - * needed by SiS driver's memory management. - */ - -/* ================================================================ - * Old-style context support -- only used by gamma. - */ - - -/* The drm_read and drm_write_string code (especially that which manages - the circular buffer), is based on Alessandro Rubini's LINUX DEVICE - DRIVERS (Cambridge: O'Reilly, 1998), pages 111-113. */ - -ssize_t gamma_fops_read(struct file *filp, char __user *buf, size_t count, loff_t *off) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; - int left; - int avail; - int send; - int cur; - - DRM_DEBUG("%p, %p\n", dev->buf_rp, dev->buf_wp); - - while (dev->buf_rp == dev->buf_wp) { - DRM_DEBUG(" sleeping\n"); - if (filp->f_flags & O_NONBLOCK) { - return -EAGAIN; - } - interruptible_sleep_on(&dev->buf_readers); - if (signal_pending(current)) { - DRM_DEBUG(" interrupted\n"); - return -ERESTARTSYS; - } - DRM_DEBUG(" awake\n"); - } - - left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ; - avail = DRM_BSZ - left; - send = DRM_MIN(avail, count); - - while (send) { - if (dev->buf_wp > dev->buf_rp) { - cur = DRM_MIN(send, dev->buf_wp - dev->buf_rp); - } else { - cur = DRM_MIN(send, dev->buf_end - dev->buf_rp); - } - if (copy_to_user(buf, dev->buf_rp, cur)) - return -EFAULT; - dev->buf_rp += cur; - if (dev->buf_rp == dev->buf_end) dev->buf_rp = dev->buf; - send -= cur; - } - - wake_up_interruptible(&dev->buf_writers); - return DRM_MIN(avail, count); -} - - -/* In an incredibly convoluted setup, the kernel module actually calls - * back into the X server to perform context switches on behalf of the - * 3d clients. - */ -int DRM(write_string)(drm_device_t *dev, const char *s) -{ - int left = (dev->buf_rp + DRM_BSZ - dev->buf_wp) % DRM_BSZ; - int send = strlen(s); - int count; - - DRM_DEBUG("%d left, %d to send (%p, %p)\n", - left, send, dev->buf_rp, dev->buf_wp); - - if (left == 1 || dev->buf_wp != dev->buf_rp) { - DRM_ERROR("Buffer not empty (%d left, wp = %p, rp = %p)\n", - left, - dev->buf_wp, - dev->buf_rp); - } - - while (send) { - if (dev->buf_wp >= dev->buf_rp) { - count = DRM_MIN(send, dev->buf_end - dev->buf_wp); - if (count == left) --count; /* Leave a hole */ - } else { - count = DRM_MIN(send, dev->buf_rp - dev->buf_wp - 1); - } - strncpy(dev->buf_wp, s, count); - dev->buf_wp += count; - if (dev->buf_wp == dev->buf_end) dev->buf_wp = dev->buf; - send -= count; - } - - if (dev->buf_async) kill_fasync(&dev->buf_async, SIGIO, POLL_IN); - - DRM_DEBUG("waking\n"); - wake_up_interruptible(&dev->buf_readers); - return 0; -} - -unsigned int gamma_fops_poll(struct file *filp, struct poll_table_struct *wait) -{ - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->dev; - - poll_wait(filp, &dev->buf_readers, wait); - if (dev->buf_wp != dev->buf_rp) return POLLIN | POLLRDNORM; - return 0; -} - -int DRM(context_switch)(drm_device_t *dev, int old, int new) -{ - char buf[64]; - drm_queue_t *q; - - 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->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; - } - - /* This causes the X server to wake up & do a bunch of hardware - * interaction to actually effect the context switch. - */ - sprintf(buf, "C %d %d\n", old, new); - DRM(write_string)(dev, buf); - - 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"); - } - } - - 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 __user *argp = (void __user *)arg; - drm_ctx_res_t res; - drm_ctx_t ctx; - int i; - - DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS); - if (copy_from_user(&res, argp, 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(argp, &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; - drm_ctx_t __user *argp = (void __user *)arg; - - if (copy_from_user(&ctx, argp, 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(argp, &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 __user *)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 __user *argp = (void __user *)arg; - drm_ctx_t ctx; - drm_queue_t *q; - - if (copy_from_user(&ctx, argp, 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(argp, &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 __user *)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 __user *)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 __user *)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; -} - -void DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle ) -{ - -} - -void DRM(ctxbitmap_cleanup)( drm_device_t *dev ) -{ - -} - -int DRM(ctxbitmap_init)( drm_device_t *dev ) -{ - return 0; -} -- cgit v1.2.3