mirror of https://gitee.com/openkylin/linux.git
drm/i915: kill i915_mem.c
Some decent history digging indicates that this was to be used for the GLX_MESA_allocate_memory extension but never actually implemented for any released i915 userspace code. So just rip it out. v2: Fixup the Makefile. Acked-by: Dave Airlie <airlied@gmail.com> Cc: Keith Whitwell <keithw@vmware.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter
parent
493dea2876
commit
b2c606fe1d
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@ -37,6 +37,7 @@
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#include "drm_core.h"
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#include "linux/pci.h"
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#include "linux/export.h"
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/**
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* Get the bus id.
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@ -346,3 +347,4 @@ int drm_noop(struct drm_device *dev, void *data,
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DRM_DEBUG("\n");
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return 0;
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}
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EXPORT_SYMBOL(drm_noop);
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@ -3,7 +3,7 @@
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# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
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ccflags-y := -Iinclude/drm
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i915-y := i915_drv.o i915_dma.o i915_irq.o i915_mem.o \
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i915-y := i915_drv.o i915_dma.o i915_irq.o \
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i915_debugfs.o \
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i915_suspend.o \
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i915_gem.o \
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@ -2246,18 +2246,12 @@ void i915_driver_lastclose(struct drm_device * dev)
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i915_gem_lastclose(dev);
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if (dev_priv->agp_heap)
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i915_mem_takedown(&(dev_priv->agp_heap));
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i915_dma_cleanup(dev);
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}
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void i915_driver_preclose(struct drm_device * dev, struct drm_file *file_priv)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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i915_gem_release(dev, file_priv);
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if (!drm_core_check_feature(dev, DRIVER_MODESET))
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i915_mem_release(dev, file_priv, dev_priv->agp_heap);
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}
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void i915_driver_postclose(struct drm_device *dev, struct drm_file *file)
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@ -2276,11 +2270,11 @@ struct drm_ioctl_desc i915_ioctls[] = {
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DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, i915_irq_wait, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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DRM_IOCTL_DEF_DRV(I915_ALLOC, i915_mem_alloc, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_FREE, i915_mem_free, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, i915_mem_init_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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DRM_IOCTL_DEF_DRV(I915_CMDBUFFER, i915_cmdbuffer, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, i915_mem_destroy_heap, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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DRM_IOCTL_DEF_DRV(I915_DESTROY_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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DRM_IOCTL_DEF_DRV(I915_SET_VBLANK_PIPE, i915_vblank_pipe_set, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
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DRM_IOCTL_DEF_DRV(I915_GET_VBLANK_PIPE, i915_vblank_pipe_get, DRM_AUTH),
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DRM_IOCTL_DEF_DRV(I915_VBLANK_SWAP, i915_vblank_swap, DRM_AUTH),
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@ -329,7 +329,6 @@ typedef struct drm_i915_private {
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int tex_lru_log_granularity;
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int allow_batchbuffer;
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struct mem_block *agp_heap;
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unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
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int vblank_pipe;
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int num_pipe;
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@ -1075,18 +1074,6 @@ extern void i915_destroy_error_state(struct drm_device *dev);
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#endif
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/* i915_mem.c */
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extern int i915_mem_alloc(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int i915_mem_free(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int i915_mem_init_heap(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern int i915_mem_destroy_heap(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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extern void i915_mem_takedown(struct mem_block **heap);
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extern void i915_mem_release(struct drm_device * dev,
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struct drm_file *file_priv, struct mem_block *heap);
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/* i915_gem.c */
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int i915_gem_init_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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@ -1,387 +0,0 @@
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/* i915_mem.c -- Simple agp/fb memory manager for i915 -*- linux-c -*-
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*/
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/*
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* Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "drmP.h"
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#include "drm.h"
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#include "i915_drm.h"
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#include "i915_drv.h"
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/* This memory manager is integrated into the global/local lru
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* mechanisms used by the clients. Specifically, it operates by
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* setting the 'in_use' fields of the global LRU to indicate whether
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* this region is privately allocated to a client.
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*
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* This does require the client to actually respect that field.
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*
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* Currently no effort is made to allocate 'private' memory in any
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* clever way - the LRU information isn't used to determine which
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* block to allocate, and the ring is drained prior to allocations --
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* in other words allocation is expensive.
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*/
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static void mark_block(struct drm_device * dev, struct mem_block *p, int in_use)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv;
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drm_i915_sarea_t *sarea_priv = master_priv->sarea_priv;
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struct drm_tex_region *list;
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unsigned shift, nr;
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unsigned start;
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unsigned end;
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unsigned i;
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int age;
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shift = dev_priv->tex_lru_log_granularity;
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nr = I915_NR_TEX_REGIONS;
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start = p->start >> shift;
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end = (p->start + p->size - 1) >> shift;
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age = ++sarea_priv->texAge;
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list = sarea_priv->texList;
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/* Mark the regions with the new flag and update their age. Move
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* them to head of list to preserve LRU semantics.
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*/
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for (i = start; i <= end; i++) {
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list[i].in_use = in_use;
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list[i].age = age;
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/* remove_from_list(i)
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*/
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list[(unsigned)list[i].next].prev = list[i].prev;
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list[(unsigned)list[i].prev].next = list[i].next;
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/* insert_at_head(list, i)
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*/
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list[i].prev = nr;
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list[i].next = list[nr].next;
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list[(unsigned)list[nr].next].prev = i;
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list[nr].next = i;
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}
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}
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/* Very simple allocator for agp memory, working on a static range
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* already mapped into each client's address space.
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*/
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static struct mem_block *split_block(struct mem_block *p, int start, int size,
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struct drm_file *file_priv)
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{
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/* Maybe cut off the start of an existing block */
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if (start > p->start) {
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struct mem_block *newblock = kmalloc(sizeof(*newblock),
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GFP_KERNEL);
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if (!newblock)
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goto out;
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newblock->start = start;
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newblock->size = p->size - (start - p->start);
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newblock->file_priv = NULL;
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newblock->next = p->next;
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newblock->prev = p;
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p->next->prev = newblock;
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p->next = newblock;
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p->size -= newblock->size;
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p = newblock;
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}
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/* Maybe cut off the end of an existing block */
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if (size < p->size) {
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struct mem_block *newblock = kmalloc(sizeof(*newblock),
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GFP_KERNEL);
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if (!newblock)
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goto out;
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newblock->start = start + size;
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newblock->size = p->size - size;
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newblock->file_priv = NULL;
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newblock->next = p->next;
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newblock->prev = p;
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p->next->prev = newblock;
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p->next = newblock;
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p->size = size;
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}
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out:
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/* Our block is in the middle */
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p->file_priv = file_priv;
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return p;
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}
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static struct mem_block *alloc_block(struct mem_block *heap, int size,
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int align2, struct drm_file *file_priv)
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{
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struct mem_block *p;
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int mask = (1 << align2) - 1;
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for (p = heap->next; p != heap; p = p->next) {
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int start = (p->start + mask) & ~mask;
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if (p->file_priv == NULL && start + size <= p->start + p->size)
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return split_block(p, start, size, file_priv);
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}
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return NULL;
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}
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static struct mem_block *find_block(struct mem_block *heap, int start)
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{
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struct mem_block *p;
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for (p = heap->next; p != heap; p = p->next)
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if (p->start == start)
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return p;
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return NULL;
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}
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static void free_block(struct mem_block *p)
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{
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p->file_priv = NULL;
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/* Assumes a single contiguous range. Needs a special file_priv in
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* 'heap' to stop it being subsumed.
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*/
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if (p->next->file_priv == NULL) {
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struct mem_block *q = p->next;
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p->size += q->size;
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p->next = q->next;
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p->next->prev = p;
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kfree(q);
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}
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if (p->prev->file_priv == NULL) {
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struct mem_block *q = p->prev;
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q->size += p->size;
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q->next = p->next;
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q->next->prev = q;
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kfree(p);
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}
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}
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/* Initialize. How to check for an uninitialized heap?
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*/
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static int init_heap(struct mem_block **heap, int start, int size)
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{
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struct mem_block *blocks = kmalloc(sizeof(*blocks), GFP_KERNEL);
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if (!blocks)
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return -ENOMEM;
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*heap = kmalloc(sizeof(**heap), GFP_KERNEL);
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if (!*heap) {
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kfree(blocks);
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return -ENOMEM;
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}
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blocks->start = start;
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blocks->size = size;
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blocks->file_priv = NULL;
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blocks->next = blocks->prev = *heap;
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memset(*heap, 0, sizeof(**heap));
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(*heap)->file_priv = (struct drm_file *) -1;
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(*heap)->next = (*heap)->prev = blocks;
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return 0;
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}
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/* Free all blocks associated with the releasing file.
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*/
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void i915_mem_release(struct drm_device * dev, struct drm_file *file_priv,
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struct mem_block *heap)
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{
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struct mem_block *p;
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if (!heap || !heap->next)
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return;
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for (p = heap->next; p != heap; p = p->next) {
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if (p->file_priv == file_priv) {
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p->file_priv = NULL;
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mark_block(dev, p, 0);
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}
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}
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/* Assumes a single contiguous range. Needs a special file_priv in
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* 'heap' to stop it being subsumed.
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*/
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for (p = heap->next; p != heap; p = p->next) {
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while (p->file_priv == NULL && p->next->file_priv == NULL) {
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struct mem_block *q = p->next;
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p->size += q->size;
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p->next = q->next;
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p->next->prev = p;
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kfree(q);
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}
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}
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}
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/* Shutdown.
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*/
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void i915_mem_takedown(struct mem_block **heap)
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{
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struct mem_block *p;
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if (!*heap)
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return;
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for (p = (*heap)->next; p != *heap;) {
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struct mem_block *q = p;
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p = p->next;
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kfree(q);
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}
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kfree(*heap);
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*heap = NULL;
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}
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static struct mem_block **get_heap(drm_i915_private_t * dev_priv, int region)
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{
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switch (region) {
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case I915_MEM_REGION_AGP:
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return &dev_priv->agp_heap;
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default:
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return NULL;
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}
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}
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/* IOCTL HANDLERS */
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int i915_mem_alloc(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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drm_i915_mem_alloc_t *alloc = data;
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struct mem_block *block, **heap;
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if (!dev_priv) {
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DRM_ERROR("called with no initialization\n");
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return -EINVAL;
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}
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heap = get_heap(dev_priv, alloc->region);
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if (!heap || !*heap)
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return -EFAULT;
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/* Make things easier on ourselves: all allocations at least
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* 4k aligned.
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*/
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if (alloc->alignment < 12)
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alloc->alignment = 12;
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block = alloc_block(*heap, alloc->size, alloc->alignment, file_priv);
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if (!block)
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return -ENOMEM;
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mark_block(dev, block, 1);
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if (DRM_COPY_TO_USER(alloc->region_offset, &block->start,
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sizeof(int))) {
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DRM_ERROR("copy_to_user\n");
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return -EFAULT;
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}
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return 0;
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}
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int i915_mem_free(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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drm_i915_mem_free_t *memfree = data;
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struct mem_block *block, **heap;
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if (!dev_priv) {
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DRM_ERROR("called with no initialization\n");
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return -EINVAL;
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}
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heap = get_heap(dev_priv, memfree->region);
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if (!heap || !*heap)
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return -EFAULT;
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block = find_block(*heap, memfree->region_offset);
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if (!block)
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return -EFAULT;
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if (block->file_priv != file_priv)
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return -EPERM;
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mark_block(dev, block, 0);
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free_block(block);
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return 0;
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}
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int i915_mem_init_heap(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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drm_i915_mem_init_heap_t *initheap = data;
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struct mem_block **heap;
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if (!dev_priv) {
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DRM_ERROR("called with no initialization\n");
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return -EINVAL;
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}
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heap = get_heap(dev_priv, initheap->region);
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if (!heap)
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return -EFAULT;
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if (*heap) {
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DRM_ERROR("heap already initialized?");
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return -EFAULT;
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}
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return init_heap(heap, initheap->start, initheap->size);
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}
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int i915_mem_destroy_heap(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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drm_i915_private_t *dev_priv = dev->dev_private;
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drm_i915_mem_destroy_heap_t *destroyheap = data;
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||||
struct mem_block **heap;
|
||||
|
||||
if (!dev_priv) {
|
||||
DRM_ERROR("called with no initialization\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
heap = get_heap(dev_priv, destroyheap->region);
|
||||
if (!heap) {
|
||||
DRM_ERROR("get_heap failed");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
if (!*heap) {
|
||||
DRM_ERROR("heap not initialized?");
|
||||
return -EFAULT;
|
||||
}
|
||||
|
||||
i915_mem_takedown(heap);
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue