45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/*
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* VAS_EBOOT -- GRand Unified Bootloader
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* Copyright (C) 2008,2009 Free Software Foundation, Inc.
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*
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* VAS_EBOOT 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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* VAS_EBOOT 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 VAS_EBOOT. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef VAS_EBOOT_DMA_H
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#define VAS_EBOOT_DMA_H 1
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struct VasEBoot_pci_dma_chunk;
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struct VasEBoot_pci_dma_chunk *EXPORT_FUNC(VasEBoot_memalign_dma32) (VasEBoot_size_t align,
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VasEBoot_size_t size);
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void EXPORT_FUNC(VasEBoot_dma_free) (struct VasEBoot_pci_dma_chunk *ch);
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volatile void *EXPORT_FUNC(VasEBoot_dma_get_virt) (struct VasEBoot_pci_dma_chunk *ch);
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VasEBoot_uint32_t EXPORT_FUNC(VasEBoot_dma_get_phys) (struct VasEBoot_pci_dma_chunk *ch);
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static inline void *
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VasEBoot_dma_phys2virt (VasEBoot_uint32_t phys, struct VasEBoot_pci_dma_chunk *chunk)
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{
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return ((VasEBoot_uint8_t *) VasEBoot_dma_get_virt (chunk)
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+ (phys - VasEBoot_dma_get_phys (chunk)));
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}
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static inline VasEBoot_uint32_t
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VasEBoot_dma_virt2phys (volatile void *virt, struct VasEBoot_pci_dma_chunk *chunk)
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{
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return (((VasEBoot_uint8_t *) virt - (VasEBoot_uint8_t *) VasEBoot_dma_get_virt (chunk))
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+ VasEBoot_dma_get_phys (chunk));
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}
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#endif
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