60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2007,2009 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/dl.h>
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#include <grub/dma.h>
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#include <grub/mm.h>
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#include <grub/misc.h>
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#include <grub/mm_private.h>
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#include <grub/cache.h>
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struct grub_pci_dma_chunk *
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grub_memalign_dma32 (grub_size_t align, grub_size_t size)
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{
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void *ret;
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if (align < 64)
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align = 64;
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size = ALIGN_UP (size, align);
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ret = grub_memalign (align, size);
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if (!ret)
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return 0;
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grub_arch_sync_dma_caches (ret, size);
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return ret;
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}
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void
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grub_dma_free (struct grub_pci_dma_chunk *ch)
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{
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grub_size_t size = (((struct grub_mm_header *) ch) - 1)->size * GRUB_MM_ALIGN;
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grub_arch_sync_dma_caches (ch, size);
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grub_free (ch);
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}
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volatile void *
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grub_dma_get_virt (struct grub_pci_dma_chunk *ch)
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{
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return (void *) ch;
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}
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grub_uint32_t
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grub_dma_get_phys (struct grub_pci_dma_chunk *ch)
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{
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return (grub_uint32_t) (grub_addr_t) ch;
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}
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