1 files changed, 0 insertions, 568 deletions

diff --git a/bsd/gamma/gamma_dma.c b/bsd/gamma/gamma_dma.c
deleted file mode 100644
index 0dee8c74a..000000000
--- a/bsd/gamma/gamma_dma.c
+++ /dev/null
@@ -1,568 +0,0 @@
-/* gamma_dma.c -- DMA support for GMX 2000 -*- linux-c -*-
- * Created: Fri Mar 19 14:30:16 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>
- *
- */
-
-
-
-#include "gamma.h"
-#include "drmP.h"
-#include "drm.h"
-#include "gamma_drm.h"
-#include "gamma_drv.h"
-
-
-static __inline__ void gamma_dma_dispatch(drm_device_t *dev, unsigned long address,
-				      unsigned long length)
-{
-	drm_gamma_private_t *dev_priv =
-		(drm_gamma_private_t *)dev->dev_private;
-
-	GAMMA_WRITE(GAMMA_DMAADDRESS, DRM_OS_VTOPHYS((void *)address));
-	while (GAMMA_READ(GAMMA_GCOMMANDSTATUS) != 4)
-		;
-	GAMMA_WRITE(GAMMA_DMACOUNT, length / 4);
-}
-
-void gamma_dma_quiescent_single(drm_device_t *dev)
-{
-	drm_gamma_private_t *dev_priv =
-		(drm_gamma_private_t *)dev->dev_private;
-
-	while (GAMMA_READ(GAMMA_DMACOUNT))
-		;
-	while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
-		;
-
-	GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
-	GAMMA_WRITE(GAMMA_SYNC, 0);
-
-	do {
-		while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
-			;
-	} while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
-}
-
-void gamma_dma_quiescent_dual(drm_device_t *dev)
-{
-	drm_gamma_private_t *dev_priv =
-		(drm_gamma_private_t *)dev->dev_private;
-
-	while (GAMMA_READ(GAMMA_DMACOUNT))
-		;
-	while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
-		;
-
-	GAMMA_WRITE(GAMMA_BROADCASTMASK, 3);
-
-	GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
-	GAMMA_WRITE(GAMMA_SYNC, 0);
-
-				/* Read from first MX */
-	do {
-		while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
-			;
-	} while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
-
-				/* Read from second MX */
-	do {
-		while (!GAMMA_READ(GAMMA_OUTFIFOWORDS + 0x10000))
-			;
-	} while (GAMMA_READ(GAMMA_OUTPUTFIFO + 0x10000) != GAMMA_SYNC_TAG);
-}
-
-void gamma_dma_ready(drm_device_t *dev)
-{
-	drm_gamma_private_t *dev_priv =
-		(drm_gamma_private_t *)dev->dev_private;
-
-	while (GAMMA_READ(GAMMA_DMACOUNT))
-		;
-}
-
-static __inline__ int gamma_dma_is_ready(drm_device_t *dev)
-{
-	drm_gamma_private_t *dev_priv =
-		(drm_gamma_private_t *)dev->dev_private;
-
-	return !GAMMA_READ(GAMMA_DMACOUNT);
-}
-
-void gamma_dma_service( DRM_OS_IRQ_ARGS)
-{
-	drm_device_t	    *dev      = (drm_device_t *)device;
-	drm_device_dma_t    *dma      = dev->dma;
-	drm_gamma_private_t *dev_priv =
-		(drm_gamma_private_t *)dev->dev_private;
-
-	atomic_inc(&dev->counts[6]); /* _DRM_STAT_IRQ */
-	GAMMA_WRITE(GAMMA_GDELAYTIMER, 0xc350/2); /* 0x05S */
-	GAMMA_WRITE(GAMMA_GCOMMANDINTFLAGS, 8);
-	GAMMA_WRITE(GAMMA_GINTFLAGS, 0x2001);
-	if (gamma_dma_is_ready(dev)) {
-				/* Free previous buffer */
-		if (test_and_set_bit(0, &dev->dma_flag)) return;
-		if (dma->this_buffer) {
-			gamma_free_buffer(dev, dma->this_buffer);
-			dma->this_buffer = NULL;
-		}
-		clear_bit(0, &dev->dma_flag);
-
-	}
-}
-
-/* Only called by gamma_dma_schedule. */
-static int gamma_do_dma(drm_device_t *dev, int locked)
-{
-	unsigned long	 address;
-	unsigned long	 length;
-	drm_buf_t	 *buf;
-	int		 retcode = 0;
-	drm_device_dma_t *dma = dev->dma;
-#if DRM_DMA_HISTOGRAM
-	cycles_t	 dma_start, dma_stop;
-#endif
-
-	if (test_and_set_bit(0, &dev->dma_flag)) DRM_OS_RETURN( EBUSY );
-
-#if DRM_DMA_HISTOGRAM
-	dma_start = get_cycles();
-#endif
-
-	if (!dma->next_buffer) {
-		DRM_ERROR("No next_buffer\n");
-		clear_bit(0, &dev->dma_flag);
-		DRM_OS_RETURN( EINVAL );
-	}
-
-	buf	= dma->next_buffer;
-	address = (unsigned long)buf->address;
-	length	= buf->used;
-
-	DRM_DEBUG("context %d, buffer %d (%ld bytes)\n",
-		  buf->context, buf->idx, length);
-
-	if (buf->list == DRM_LIST_RECLAIM) {
-		gamma_clear_next_buffer(dev);
-		gamma_free_buffer(dev, buf);
-		clear_bit(0, &dev->dma_flag);
-		DRM_OS_RETURN( EINVAL );
-	}
-
-	if (!length) {
-		DRM_ERROR("0 length buffer\n");
-		gamma_clear_next_buffer(dev);
-		gamma_free_buffer(dev, buf);
-		clear_bit(0, &dev->dma_flag);
-		return 0;
-	}
-
-	if (!gamma_dma_is_ready(dev)) {
-		clear_bit(0, &dev->dma_flag);
-		DRM_OS_RETURN( EBUSY );
-	}
-
-	if (buf->while_locked) {
-		if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
-			DRM_ERROR("Dispatching buffer %d from pid %d"
-				  " \"while locked\", but no lock held\n",
-				  buf->idx, buf->pid);
-		}
-	} else {
-		if (!locked && !gamma_lock_take(&dev->lock.hw_lock->lock,
-					      DRM_KERNEL_CONTEXT)) {
-			clear_bit(0, &dev->dma_flag);
-			DRM_OS_RETURN( EBUSY );
-		}
-	}
-
-	if (dev->last_context != buf->context
-	    && !(dev->queuelist[buf->context]->flags
-		 & _DRM_CONTEXT_PRESERVED)) {
-				/* PRE: dev->last_context != buf->context */
-		if (DRM(context_switch)(dev, dev->last_context,
-					buf->context)) {
-			DRM(clear_next_buffer)(dev);
-			DRM(free_buffer)(dev, buf);
-		}
-		retcode = EBUSY;
-		goto cleanup;
-
-				/* POST: we will wait for the context
-				   switch and will dispatch on a later call
-				   when dev->last_context == buf->context.
-				   NOTE WE HOLD THE LOCK THROUGHOUT THIS
-				   TIME! */
-	}
-
-	gamma_clear_next_buffer(dev);
-	buf->pending	 = 1;
-	buf->waiting	 = 0;
-	buf->list	 = DRM_LIST_PEND;
-#if DRM_DMA_HISTOGRAM
-	buf->time_dispatched = get_cycles();
-#endif
-
-	gamma_dma_dispatch(dev, address, length);
-	gamma_free_buffer(dev, dma->this_buffer);
-	dma->this_buffer = buf;
-
-	atomic_inc(&dev->counts[7]); /* _DRM_STAT_DMA */
-	atomic_add(length, &dev->counts[8]); /* _DRM_STAT_PRIMARY */
-
-	if (!buf->while_locked && !dev->context_flag && !locked) {
-		if (gamma_lock_free(dev, &dev->lock.hw_lock->lock,
-				  DRM_KERNEL_CONTEXT)) {
-			DRM_ERROR("\n");
-		}
-	}
-cleanup:
-
-	clear_bit(0, &dev->dma_flag);
-
-#if DRM_DMA_HISTOGRAM
-	dma_stop = get_cycles();
-	atomic_inc(&dev->histo.dma[gamma_histogram_slot(dma_stop - dma_start)]);
-#endif
-
-	DRM_OS_RETURN( retcode );
-}
-
-static void gamma_dma_timer_bh(unsigned long dev)
-{
-	gamma_dma_schedule((drm_device_t *)dev, 0);
-}
-
-void gamma_dma_immediate_bh(DRM_OS_TASKQUEUE_ARGS)
-{
-	gamma_dma_schedule(dev, 0);
-}
-
-int gamma_dma_schedule(drm_device_t *dev, int locked)
-{
-	int		 next;
-	drm_queue_t	 *q;
-	drm_buf_t	 *buf;
-	int		 retcode   = 0;
-	int		 processed = 0;
-	int		 missed;
-	int		 expire	   = 20;
-	drm_device_dma_t *dma	   = dev->dma;
-#if DRM_DMA_HISTOGRAM
-	cycles_t	 schedule_start;
-#endif
-
-	if (test_and_set_bit(0, &dev->interrupt_flag)) {
-				/* Not reentrant */
-		atomic_inc(&dev->counts[10]); /* _DRM_STAT_MISSED */
-		DRM_OS_RETURN( EBUSY );
-	}
-	missed = atomic_read(&dev->counts[10]);
-
-#if DRM_DMA_HISTOGRAM
-	schedule_start = get_cycles();
-#endif
-
-again:
-	if (dev->context_flag) {
-		clear_bit(0, &dev->interrupt_flag);
-		DRM_OS_RETURN( EBUSY );
-	}
-	if (dma->next_buffer) {
-				/* Unsent buffer that was previously
-				   selected, but that couldn't be sent
-				   because the lock could not be obtained
-				   or the DMA engine wasn't ready.  Try
-				   again. */
-		if (!(retcode = gamma_do_dma(dev, locked))) ++processed;
-	} else {
-		do {
-			next = gamma_select_queue(dev, gamma_dma_timer_bh);
-			if (next >= 0) {
-				q   = dev->queuelist[next];
-				buf = gamma_waitlist_get(&q->waitlist);
-				dma->next_buffer = buf;
-				dma->next_queue	 = q;
-				if (buf && buf->list == DRM_LIST_RECLAIM) {
-					gamma_clear_next_buffer(dev);
-					gamma_free_buffer(dev, buf);
-				}
-			}
-		} while (next >= 0 && !dma->next_buffer);
-		if (dma->next_buffer) {
-			if (!(retcode = gamma_do_dma(dev, locked))) {
-				++processed;
-			}
-		}
-	}
-
-	if (--expire) {
-		if (missed != atomic_read(&dev->counts[10])) {
-			if (gamma_dma_is_ready(dev)) goto again;
-		}
-		if (processed && gamma_dma_is_ready(dev)) {
-			processed = 0;
-			goto again;
-		}
-	}
-
-	clear_bit(0, &dev->interrupt_flag);
-
-#if DRM_DMA_HISTOGRAM
-	atomic_inc(&dev->histo.schedule[gamma_histogram_slot(get_cycles()
-							   - schedule_start)]);
-#endif
-	return retcode;
-}
-
-static int gamma_dma_priority(drm_device_t *dev, drm_dma_t *d)
-{
-	unsigned long	  address;
-	unsigned long	  length;
-	int		  must_free = 0;
-	int		  retcode   = 0;
-	int		  i;
-	int		  idx;
-	drm_buf_t	  *buf;
-	drm_buf_t	  *last_buf = NULL;
-	drm_device_dma_t  *dma	    = dev->dma;
-	static int never;
-
-				/* Turn off interrupt handling */
-	while (test_and_set_bit(0, &dev->interrupt_flag)) {
-		retcode = tsleep(&never, PZERO|PCATCH, "gamp1", 1);
-		if (retcode)
-			return retcode;
-	}
-	if (!(d->flags & _DRM_DMA_WHILE_LOCKED)) {
-		while (!gamma_lock_take(&dev->lock.hw_lock->lock,
-				      DRM_KERNEL_CONTEXT)) {
-			retcode = tsleep(&never, PZERO|PCATCH, "gamp2", 1);
-			if (retcode)
-				return retcode;
-		}
-		++must_free;
-	}
-
-	for (i = 0; i < d->send_count; i++) {
-		idx = d->send_indices[i];
-		if (idx < 0 || idx >= dma->buf_count) {
-			DRM_ERROR("Index %d (of %d max)\n",
-				  d->send_indices[i], dma->buf_count - 1);
-			continue;
-		}
-		buf = dma->buflist[ idx ];
-		if (buf->pid != DRM_OS_CURRENTPID) {
-			DRM_ERROR("Process %d using buffer owned by %d\n",
-				  DRM_OS_CURRENTPID, buf->pid);
-			retcode = EINVAL;
-			goto cleanup;
-		}
-		if (buf->list != DRM_LIST_NONE) {
-			DRM_ERROR("Process %d using %d's buffer on list %d\n",
-				  DRM_OS_CURRENTPID, buf->pid, buf->list);
-			retcode = EINVAL;
-			goto cleanup;
-		}
-				/* This isn't a race condition on
-				   buf->list, since our concern is the
-				   buffer reclaim during the time the
-				   process closes the /dev/drm? handle, so
-				   it can't also be doing DMA. */
-		buf->list	  = DRM_LIST_PRIO;
-		buf->used	  = d->send_sizes[i];
-		buf->context	  = d->context;
-		buf->while_locked = d->flags & _DRM_DMA_WHILE_LOCKED;
-		address		  = (unsigned long)buf->address;
-		length		  = buf->used;
-		if (!length) {
-			DRM_ERROR("0 length buffer\n");
-		}
-		if (buf->pending) {
-			DRM_ERROR("Sending pending buffer:"
-				  " buffer %d, offset %d\n",
-				  d->send_indices[i], i);
-			retcode = EINVAL;
-			goto cleanup;
-		}
-		if (buf->waiting) {
-			DRM_ERROR("Sending waiting buffer:"
-				  " buffer %d, offset %d\n",
-				  d->send_indices[i], i);
-			retcode = EINVAL;
-			goto cleanup;
-		}
-		buf->pending = 1;
-
-		if (dev->last_context != buf->context
-		    && !(dev->queuelist[buf->context]->flags
-			 & _DRM_CONTEXT_PRESERVED)) {
-			/* PRE: dev->last_context != buf->context */
-			DRM(context_switch)(dev, dev->last_context,
-					    buf->context);
-				/* POST: we will wait for the context
-				   switch and will dispatch on a later call
-				   when dev->last_context == buf->context.
-				   NOTE WE HOLD THE LOCK THROUGHOUT THIS
-				   TIME! */
-			retcode = tsleep(&dev->context_wait,  PZERO|PCATCH,
-				       "gamctx", 0);
-			if (retcode)
-				goto cleanup;
-			if (dev->last_context != buf->context) {
-				DRM_ERROR("Context mismatch: %d %d\n",
-					  dev->last_context,
-					  buf->context);
-			}
-		}
-
-#if DRM_DMA_HISTOGRAM
-		buf->time_queued     = get_cycles();
-		buf->time_dispatched = buf->time_queued;
-#endif
-		gamma_dma_dispatch(dev, address, length);
-		atomic_inc(&dev->counts[9]); /* _DRM_STAT_SPECIAL */
-		atomic_add(length, &dev->counts[8]); /* _DRM_STAT_PRIMARY */
-
-		if (last_buf) {
-			gamma_free_buffer(dev, last_buf);
-		}
-		last_buf = buf;
-	}
-
-
-cleanup:
-	if (last_buf) {
-		gamma_dma_ready(dev);
-		gamma_free_buffer(dev, last_buf);
-	}
-
-	if (must_free && !dev->context_flag) {
-		if (gamma_lock_free(dev, &dev->lock.hw_lock->lock,
-				  DRM_KERNEL_CONTEXT)) {
-			DRM_ERROR("\n");
-		}
-	}
-	clear_bit(0, &dev->interrupt_flag);
-	DRM_OS_RETURN( retcode );
-}
-
-static int gamma_dma_send_buffers(drm_device_t *dev, drm_dma_t *d)
-{
-	drm_buf_t	  *last_buf = NULL;
-	int		  retcode   = 0;
-	drm_device_dma_t  *dma	    = dev->dma;
-
-	if (d->flags & _DRM_DMA_BLOCK) {
-		last_buf = dma->buflist[d->send_indices[d->send_count-1]];
-		atomic_inc(&last_buf->dma_wait);
-	}
-
-	if ((retcode = gamma_dma_enqueue(dev, d))) {
-		if (d->flags & _DRM_DMA_BLOCK)
-			atomic_dec(&last_buf->dma_wait);
-		return retcode;
-	}
-
-	gamma_dma_schedule(dev, 0);
-
-	if (d->flags & _DRM_DMA_BLOCK) {
-		DRM_DEBUG("%d waiting\n", DRM_OS_CURRENTPID);
-		for (;;) {
-			retcode = tsleep(&last_buf->dma_wait, PZERO|PCATCH,
-					 "gamdw", 0);
-			if (!last_buf->waiting
-			    && !last_buf->pending)
-				break; /* finished */
-			if (retcode)
-				break;
-		}
-		atomic_dec(&last_buf->dma_wait);
-		DRM_DEBUG("%d running\n", DRM_OS_CURRENTPID);
-		if (!retcode
-		    || (last_buf->list==DRM_LIST_PEND && !last_buf->pending)) {
-			if (!last_buf->dma_wait) {
-				gamma_free_buffer(dev, last_buf);
-			}
-		}
-		if (retcode) {
-			DRM_ERROR("ctx%d w%d p%d c%d i%d l%d %d/%d\n",
-				  d->context,
-				  last_buf->waiting,
-				  last_buf->pending,
-				  DRM_WAITCOUNT(dev, d->context),
-				  last_buf->idx,
-				  last_buf->list,
-				  last_buf->pid,
-				  DRM_OS_CURRENTPID);
-		}
-	}
-	DRM_OS_RETURN( retcode );
-}
-
-int gamma_dma( DRM_OS_IOCTL )
-{
-	DRM_OS_DEVICE;
-	drm_device_dma_t  *dma	    = dev->dma;
-	int		  retcode   = 0;
-	drm_dma_t	  d;
-
-	DRM_OS_KRNFROMUSR(d, (drm_dma_t *) data, sizeof(d));
-
-	if (d.send_count < 0 || d.send_count > dma->buf_count) {
-		DRM_ERROR("Process %d trying to send %d buffers (of %d max)\n",
-			  DRM_OS_CURRENTPID, d.send_count, dma->buf_count);
-		DRM_OS_RETURN( EINVAL );
-	}
-
-	if (d.request_count < 0 || d.request_count > dma->buf_count) {
-		DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
-			  DRM_OS_CURRENTPID, d.request_count, dma->buf_count);
-		DRM_OS_RETURN( EINVAL );
-	}
-
-	if (d.send_count) {
-		if (d.flags & _DRM_DMA_PRIORITY)
-			retcode = gamma_dma_priority(dev, &d);
-		else
-			retcode = gamma_dma_send_buffers(dev, &d);
-	}
-
-	d.granted_count = 0;
-
-	if (!retcode && d.request_count) {
-		retcode = gamma_dma_get_buffers(dev, &d);
-	}
-
-	DRM_DEBUG("%d returning, granted = %d\n",
-		  DRM_OS_CURRENTPID, d.granted_count);
-	DRM_OS_KRNTOUSR((drm_dma_t *) data, d, sizeof(d));
-
-	return retcode;
-}