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authorMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-02-02 15:02:49 +0100
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-02-02 15:02:49 +0100
commitb16b9e4656e7199c2aec74a4c8ebc7a875d3ba73 (patch)
tree4361edef0d42d5bf5ac984ef72b4fac35426eae7 /nx-X11/extras/drm/shared/i915_mem.c
parent0d5a83e986f39982c0924652a3662e60b1f23162 (diff)
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massive reduction of unneeded files
Diffstat (limited to 'nx-X11/extras/drm/shared/i915_mem.c')
-rw-r--r--nx-X11/extras/drm/shared/i915_mem.c347
1 files changed, 0 insertions, 347 deletions
diff --git a/nx-X11/extras/drm/shared/i915_mem.c b/nx-X11/extras/drm/shared/i915_mem.c
deleted file mode 100644
index c6115b7e1..000000000
--- a/nx-X11/extras/drm/shared/i915_mem.c
+++ /dev/null
@@ -1,347 +0,0 @@
-/* i915_mem.c -- Simple agp/fb memory manager for i915 -*- linux-c -*-
- */
-/**************************************************************************
- *
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
- * All Rights Reserved.
- *
- **************************************************************************/
-
-#include "i915.h"
-#include "drmP.h"
-#include "drm.h"
-#include "i915_drm.h"
-#include "i915_drv.h"
-
-/* This memory manager is integrated into the global/local lru
- * mechanisms used by the clients. Specifically, it operates by
- * setting the 'in_use' fields of the global LRU to indicate whether
- * this region is privately allocated to a client.
- *
- * This does require the client to actually respect that field.
- *
- * Currently no effort is made to allocate 'private' memory in any
- * clever way - the LRU information isn't used to determine which
- * block to allocate, and the ring is drained prior to allocations --
- * in other words allocation is expensive.
- */
-static void mark_block(drm_device_t * dev, struct mem_block *p, int in_use)
-{
- drm_i915_private_t *dev_priv = dev->dev_private;
- drm_i915_sarea_t *sarea_priv = dev_priv->sarea_priv;
- drm_tex_region_t *list;
- unsigned shift, nr;
- unsigned start;
- unsigned end;
- unsigned i;
- int age;
-
- shift = dev_priv->tex_lru_log_granularity;
- nr = I915_NR_TEX_REGIONS;
-
- start = p->start >> shift;
- end = (p->start + p->size - 1) >> shift;
-
- age = ++sarea_priv->texAge;
- list = sarea_priv->texList;
-
- /* Mark the regions with the new flag and update their age. Move
- * them to head of list to preserve LRU semantics.
- */
- for (i = start; i <= end; i++) {
- list[i].in_use = in_use;
- list[i].age = age;
-
- /* remove_from_list(i)
- */
- list[(unsigned)list[i].next].prev = list[i].prev;
- list[(unsigned)list[i].prev].next = list[i].next;
-
- /* insert_at_head(list, i)
- */
- list[i].prev = nr;
- list[i].next = list[nr].next;
- list[(unsigned)list[nr].next].prev = i;
- list[nr].next = i;
- }
-}
-
-/* Very simple allocator for agp 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,
- DRMFILE filp)
-{
- /* Maybe cut off the start of an existing block */
- if (start > p->start) {
- struct mem_block *newblock = DRM(alloc)(sizeof(*newblock), DRM_MEM_BUFLISTS);
- 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_BUFLISTS);
- 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, DRMFILE 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 == NULL && 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 == NULL) {
- 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_BUFLISTS);
- }
-
- if (p->prev->filp == NULL) {
- 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_BUFLISTS);
- }
-}
-
-/* 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_BUFLISTS);
-
- if (!blocks)
- return -ENOMEM;
-
- *heap = DRM(alloc)(sizeof(**heap), DRM_MEM_BUFLISTS);
- if (!*heap) {
- DRM(free)(blocks, sizeof(*blocks), DRM_MEM_BUFLISTS);
- return -ENOMEM;
- }
-
- blocks->start = start;
- blocks->size = size;
- blocks->filp = NULL;
- blocks->next = blocks->prev = *heap;
-
- memset(*heap, 0, sizeof(**heap));
- (*heap)->filp = (DRMFILE) - 1;
- (*heap)->next = (*heap)->prev = blocks;
- return 0;
-}
-
-/* Free all blocks associated with the releasing file.
- */
-void i915_mem_release(drm_device_t * dev, DRMFILE 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;
- mark_block(dev, p, 0);
- }
- }
-
- /* 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 == NULL && p->next->filp == NULL) {
- 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_BUFLISTS);
- }
- }
-}
-
-/* Shutdown.
- */
-void i915_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_BUFLISTS);
- }
-
- DRM(free)(*heap, sizeof(**heap), DRM_MEM_BUFLISTS);
- *heap = NULL;
-}
-
-static struct mem_block **get_heap(drm_i915_private_t * dev_priv, int region)
-{
- switch (region) {
- case I915_MEM_REGION_AGP:
- return &dev_priv->agp_heap;
- default:
- return NULL;
- }
-}
-
-/* IOCTL HANDLERS */
-
-int i915_mem_alloc(DRM_IOCTL_ARGS)
-{
- DRM_DEVICE;
- drm_i915_private_t *dev_priv = dev->dev_private;
- drm_i915_mem_alloc_t alloc;
- struct mem_block *block, **heap;
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
- return DRM_ERR(EINVAL);
- }
-
- DRM_COPY_FROM_USER_IOCTL(alloc, (drm_i915_mem_alloc_t __user *) data,
- sizeof(alloc));
-
- heap = get_heap(dev_priv, alloc.region);
- if (!heap || !*heap)
- return DRM_ERR(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, filp);
-
- if (!block)
- return DRM_ERR(ENOMEM);
-
- mark_block(dev, block, 1);
-
- if (DRM_COPY_TO_USER(alloc.region_offset, &block->start, sizeof(int))) {
- DRM_ERROR("copy_to_user\n");
- return DRM_ERR(EFAULT);
- }
-
- return 0;
-}
-
-int i915_mem_free(DRM_IOCTL_ARGS)
-{
- DRM_DEVICE;
- drm_i915_private_t *dev_priv = dev->dev_private;
- drm_i915_mem_free_t memfree;
- struct mem_block *block, **heap;
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
- return DRM_ERR(EINVAL);
- }
-
- DRM_COPY_FROM_USER_IOCTL(memfree, (drm_i915_mem_free_t __user *) data,
- sizeof(memfree));
-
- heap = get_heap(dev_priv, memfree.region);
- if (!heap || !*heap)
- return DRM_ERR(EFAULT);
-
- block = find_block(*heap, memfree.region_offset);
- if (!block)
- return DRM_ERR(EFAULT);
-
- if (block->filp != filp)
- return DRM_ERR(EPERM);
-
- mark_block(dev, block, 0);
- free_block(block);
- return 0;
-}
-
-int i915_mem_init_heap(DRM_IOCTL_ARGS)
-{
- DRM_DEVICE;
- drm_i915_private_t *dev_priv = dev->dev_private;
- drm_i915_mem_init_heap_t initheap;
- struct mem_block **heap;
-
- if (!dev_priv) {
- DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
- return DRM_ERR(EINVAL);
- }
-
- DRM_COPY_FROM_USER_IOCTL(initheap,
- (drm_i915_mem_init_heap_t __user *) data,
- sizeof(initheap));
-
- heap = get_heap(dev_priv, initheap.region);
- if (!heap)
- return DRM_ERR(EFAULT);
-
- if (*heap) {
- DRM_ERROR("heap already initialized?");
- return DRM_ERR(EFAULT);
- }
-
- return init_heap(heap, initheap.start, initheap.size);
-}