--- old/usr/src/uts/intel/io/drm/radeon_mem.c	Sun May 28 15:47:16 2017
+++ /dev/null	Sun May 28 15:44:56 2017
@@ -1,353 +0,0 @@
-
-/*
- * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-/* radeon_mem.c -- Simple GART/fb memory manager for radeon -*- linux-c -*- */
-/*
- * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
- *
- * The Weather Channel (TM) funded Tungsten Graphics to develop the
- * initial release of the Radeon 8500 driver under the XFree86 license.
- * This notice must be preserved.
- *
- * 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:
- *    Keith Whitwell <keith@tungstengraphics.com>
- */
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#include "drmP.h"
-#include "drm.h"
-#include "radeon_drm.h"
-#include "radeon_drv.h"
-#include "radeon_io32.h"
-
-/*
- * Very simple allocator for GART memory, working on a static range
- * already mapped into each client's address space.
- */
-
-static struct mem_block *
-split_block(struct mem_block *p, int start, int size, drm_file_t *filp)
-{
-	/* Maybe cut off the start of an existing block */
-	if (start > p->start) {
-		struct mem_block *newblock =
-		    drm_alloc(sizeof (*newblock), DRM_MEM_BUFS);
-		if (!newblock)
-			goto out;
-		newblock->start = start;
-		newblock->size = p->size - (start - p->start);
-		newblock->filp = NULL;
-		newblock->next = p->next;
-		newblock->prev = p;
-		p->next->prev = newblock;
-		p->next = newblock;
-		p->size -= newblock->size;
-		p = newblock;
-	}
-
-	/* Maybe cut off the end of an existing block */
-	if (size < p->size) {
-		struct mem_block *newblock =
-		    drm_alloc(sizeof (*newblock), DRM_MEM_BUFS);
-		if (!newblock)
-			goto out;
-		newblock->start = start + size;
-		newblock->size = p->size - size;
-		newblock->filp = NULL;
-		newblock->next = p->next;
-		newblock->prev = p;
-		p->next->prev = newblock;
-		p->next = newblock;
-		p->size = size;
-	}
-
-out:
-	/* Our block is in the middle */
-	p->filp = filp;
-	return (p);
-}
-
-static struct mem_block *
-alloc_block(struct mem_block *heap, int size, int align2, drm_file_t *filp)
-{
-	struct mem_block *p;
-	int mask = (1 << align2) - 1;
-
-	for (p = heap->next; p != heap; p = p->next) {
-		int start = (p->start + mask) & ~mask;
-		if (p->filp == 0 && start + size <= p->start + p->size)
-			return (split_block(p, start, size, filp));
-	}
-
-	return (NULL);
-}
-
-static struct mem_block *
-find_block(struct mem_block *heap, int start)
-{
-	struct mem_block *p;
-
-	for (p = heap->next; p != heap; p = p->next)
-		if (p->start == start)
-			return (p);
-
-	return (NULL);
-}
-
-static void
-free_block(struct mem_block *p)
-{
-	p->filp = NULL;
-
-	/*
-	 * Assumes a single contiguous range.  Needs a special filp in
-	 * 'heap' to stop it being subsumed.
-	 */
-	if (p->next->filp == 0) {
-		struct mem_block *q = p->next;
-		p->size += q->size;
-		p->next = q->next;
-		p->next->prev = p;
-		drm_free(q, sizeof (*q), DRM_MEM_BUFS);
-	}
-
-	if (p->prev->filp == 0) {
-		struct mem_block *q = p->prev;
-		q->size += p->size;
-		q->next = p->next;
-		q->next->prev = q;
-		drm_free(p, sizeof (*q), DRM_MEM_BUFS);
-	}
-}
-
-/*
- * Initialize.  How to check for an uninitialized heap?
- */
-static int
-init_heap(struct mem_block **heap, int start, int size)
-{
-	struct mem_block *blocks = drm_alloc(sizeof (*blocks), DRM_MEM_BUFS);
-
-	if (!blocks)
-		return (ENOMEM);
-
-	*heap = drm_alloc(sizeof (**heap), DRM_MEM_BUFS);
-	if (!*heap) {
-		drm_free(blocks, sizeof (*blocks), DRM_MEM_BUFS);
-		return (ENOMEM);
-	}
-
-	blocks->start = start;
-	blocks->size = size;
-	blocks->filp = NULL;
-	blocks->next = blocks->prev = *heap;
-
-	(void) memset(*heap, 0, sizeof (**heap));
-	(*heap)->filp = (drm_file_t *)-1;
-	(*heap)->next = (*heap)->prev = blocks;
-	return (0);
-}
-
-/*
- * Free all blocks associated with the releasing file.
- */
-void
-radeon_mem_release(drm_file_t *filp, struct mem_block *heap)
-{
-	struct mem_block *p;
-
-	if (!heap || !heap->next)
-		return;
-
-	for (p = heap->next; p != heap; p = p->next) {
-		if (p->filp == filp)
-			p->filp = NULL;
-	}
-
-	/*
-	 * Assumes a single contiguous range.  Needs a special filp in
-	 * 'heap' to stop it being subsumed.
-	 */
-	for (p = heap->next; p != heap; p = p->next) {
-		while (p->filp == 0 && p->next->filp == 0) {
-			struct mem_block *q = p->next;
-			p->size += q->size;
-			p->next = q->next;
-			p->next->prev = p;
-			drm_free(q, sizeof (*q), DRM_MEM_DRIVER);
-		}
-	}
-}
-
-/*
- * Shutdown.
- */
-void
-radeon_mem_takedown(struct mem_block **heap)
-{
-	struct mem_block *p;
-
-	if (!*heap)
-		return;
-
-	for (p = (*heap)->next; p != *heap; ) {
-		struct mem_block *q = p;
-		p = p->next;
-		drm_free(q, sizeof (*q), DRM_MEM_DRIVER);
-	}
-
-	drm_free(*heap, sizeof (**heap), DRM_MEM_DRIVER);
-	*heap = NULL;
-}
-
-/* IOCTL HANDLERS */
-
-static struct mem_block **
-get_heap(drm_radeon_private_t *dev_priv, int region)
-{
-	switch (region) {
-	case RADEON_MEM_REGION_GART:
-		return (&dev_priv->gart_heap);
-	case RADEON_MEM_REGION_FB:
-		return (&dev_priv->fb_heap);
-	default:
-		return (NULL);
-	}
-}
-
-/*ARGSUSED*/
-int
-radeon_mem_alloc(DRM_IOCTL_ARGS)
-{
-	DRM_DEVICE;
-	drm_radeon_private_t *dev_priv = dev->dev_private;
-	drm_radeon_mem_alloc_t alloc;
-	struct mem_block *block, **heap;
-
-	if (!dev_priv) {
-		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
-		return (EINVAL);
-	}
-
-#ifdef _MULTI_DATAMODEL
-	if (ddi_model_convert_from(mode & FMODELS) == DDI_MODEL_ILP32) {
-		drm_radeon_mem_alloc_32_t alloc32;
-
-		DRM_COPYFROM_WITH_RETURN(&alloc32, (void *) data,
-		    sizeof (alloc32));
-		alloc.region = alloc32.region;
-		alloc.alignment = alloc32.alignment;
-		alloc.size = alloc32.size;
-		alloc.region_offset = (void *)(uintptr_t)alloc32.region_offset;
-	} else {
-#endif
-		DRM_COPYFROM_WITH_RETURN(&alloc, (void *) data, sizeof (alloc));
-#ifdef _MULTI_DATAMODEL
-	}
-#endif
-
-	heap = get_heap(dev_priv, alloc.region);
-	if (!heap || !*heap)
-		return (EFAULT);
-
-	/*
-	 * Make things easier on ourselves: all allocations at least
-	 * 4k aligned.
-	 */
-	if (alloc.alignment < 12)
-		alloc.alignment = 12;
-
-	block = alloc_block(*heap, alloc.size, alloc.alignment, fpriv);
-
-	if (!block)
-		return (ENOMEM);
-
-	if (DRM_COPY_TO_USER(alloc.region_offset, &block->start,
-	    sizeof (int))) {
-		DRM_ERROR("copy_to_user\n");
-		return (EFAULT);
-	}
-
-	return (0);
-}
-
-/*ARGSUSED*/
-int
-radeon_mem_free(DRM_IOCTL_ARGS)
-{
-	DRM_DEVICE;
-	drm_radeon_private_t *dev_priv = dev->dev_private;
-	drm_radeon_mem_free_t memfree;
-	struct mem_block *block, **heap;
-
-	if (!dev_priv) {
-		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
-		return (EINVAL);
-	}
-
-	DRM_COPYFROM_WITH_RETURN(&memfree, (void *) data, sizeof (memfree));
-
-	heap = get_heap(dev_priv, memfree.region);
-	if (!heap || !*heap)
-		return (EFAULT);
-
-	block = find_block(*heap, memfree.region_offset);
-	if (!block)
-		return (EFAULT);
-
-	if (block->filp != fpriv)
-		return (EPERM);
-
-	free_block(block);
-	return (0);
-}
-
-/*ARGSUSED*/
-int
-radeon_mem_init_heap(DRM_IOCTL_ARGS)
-{
-	DRM_DEVICE;
-	drm_radeon_private_t *dev_priv = dev->dev_private;
-	drm_radeon_mem_init_heap_t initheap;
-	struct mem_block **heap;
-
-	if (!dev_priv) {
-		DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
-		return (EINVAL);
-	}
-
-	DRM_COPYFROM_WITH_RETURN(&initheap, (void *) data, sizeof (initheap));
-
-	heap = get_heap(dev_priv, initheap.region);
-	if (!heap)
-		return (EFAULT);
-
-	if (*heap) {
-		DRM_ERROR("heap already initialized?");
-		return (EFAULT);
-	}
-
-	return (init_heap(heap, initheap.start, initheap.size));
-}
