96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/*
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* drivers/video/tegra/nvmap/nvmap_mm.c
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*
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* Some MM related functionality specific to nvmap.
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*
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* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "nvmap_priv.h"
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void inner_flush_cache_all(void)
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{
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on_each_cpu((smp_call_func_t)v7_flush_kern_cache_all, NULL, 1);
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}
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void inner_clean_cache_all(void)
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{
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inner_flush_cache_all();
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}
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#ifndef CONFIG_NVMAP_CPA
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static void flush_cache(struct page **pages, int numpages)
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{
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unsigned int i;
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bool flush_inner = true;
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unsigned long base;
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#if defined(CONFIG_NVMAP_CACHE_MAINT_BY_SET_WAYS)
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if (numpages >= (cache_maint_inner_threshold >> PAGE_SHIFT)) {
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inner_flush_cache_all();
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flush_inner = false;
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}
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#endif
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for (i = 0; i < numpages; i++) {
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if (flush_inner)
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__flush_dcache_page(page_mapping(pages[i]), pages[i]);
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base = page_to_phys(pages[i]);
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outer_flush_range(base, base + PAGE_SIZE);
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}
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}
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#endif
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int nvmap_set_pages_array_uc(struct page **pages, int addrinarray)
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{
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#ifdef CONFIG_NVMAP_CPA
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return set_pages_array_uc(pages, addrinarray);
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#else
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flush_cache(pages, addrinarray);
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return 0;
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#endif
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}
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int nvmap_set_pages_array_wc(struct page **pages, int addrinarray)
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{
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#ifdef CONFIG_NVMAP_CPA
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return set_pages_array_wc(pages, addrinarray);
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#else
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flush_cache(pages, addrinarray);
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return 0;
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#endif
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}
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int nvmap_set_pages_array_iwb(struct page **pages, int addrinarray)
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{
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#ifdef CONFIG_NVMAP_CPA
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return set_pages_array_iwb(pages, addrinarray);
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#else
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flush_cache(pages, addrinarray);
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return 0;
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#endif
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}
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int nvmap_set_pages_array_wb(struct page **pages, int addrinarray)
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{
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#ifdef CONFIG_NVMAP_CPA
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return set_pages_array_wb(pages, addrinarray);
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#else
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return 0;
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#endif
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}
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