108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/**************************************************************************
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*
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* Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA
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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 OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#define pr_fmt(fmt) "[TTM] " fmt
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#include <drm/ttm/ttm_memory.h>
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#include <drm/ttm/ttm_module.h>
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#include <drm/ttm/ttm_page_alloc.h>
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#include <linux/spinlock.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#define TTM_MEMORY_ALLOC_RETRIES 4
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int ttm_mem_global_init(struct ttm_mem_global *glob)
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{
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int ret;
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int i;
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spin_lock_init(&glob->lock);
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ttm_page_alloc_init(glob, 4*1024);
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return 0;
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out_no_zone:
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ttm_mem_global_release(glob);
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return ret;
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}
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EXPORT_SYMBOL(ttm_mem_global_init);
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void ttm_mem_global_release(struct ttm_mem_global *glob)
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{
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unsigned int i;
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/* let the page allocator first stop the shrink work. */
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// ttm_page_alloc_fini();
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// ttm_dma_page_alloc_fini();
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}
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void ttm_mem_global_free(struct ttm_mem_global *glob,
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uint64_t amount)
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{
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}
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EXPORT_SYMBOL(ttm_mem_global_free);
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int ttm_mem_global_alloc(struct ttm_mem_global *glob, uint64_t memory,
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bool no_wait, bool interruptible)
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{
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/**
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* Normal allocations of kernel memory are registered in
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* all zones.
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*/
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return 0;
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}
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EXPORT_SYMBOL(ttm_mem_global_alloc);
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size_t ttm_round_pot(size_t size)
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{
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if ((size & (size - 1)) == 0)
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return size;
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else if (size > PAGE_SIZE)
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return PAGE_ALIGN(size);
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else {
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size_t tmp_size = 4;
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while (tmp_size < size)
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tmp_size <<= 1;
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return tmp_size;
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}
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return 0;
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}
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EXPORT_SYMBOL(ttm_round_pot);
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