diff options
Diffstat (limited to 'grub-core/kern/arm/coreboot/dma.c')
| -rw-r--r-- | grub-core/kern/arm/coreboot/dma.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/grub-core/kern/arm/coreboot/dma.c b/grub-core/kern/arm/coreboot/dma.c new file mode 100644 index 0000000..2c2a627 --- /dev/null +++ b/grub-core/kern/arm/coreboot/dma.c @@ -0,0 +1,59 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2007,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <grub/dl.h> +#include <grub/dma.h> +#include <grub/mm.h> +#include <grub/misc.h> +#include <grub/mm_private.h> +#include <grub/cache.h> + +struct grub_pci_dma_chunk * +grub_memalign_dma32 (grub_size_t align, grub_size_t size) +{ + void *ret; + if (align < 64) + align = 64; + size = ALIGN_UP (size, align); + ret = grub_memalign (align, size); + if (!ret) + return 0; + grub_arch_sync_dma_caches (ret, size); + return ret; +} + +void +grub_dma_free (struct grub_pci_dma_chunk *ch) +{ + grub_size_t size = (((struct grub_mm_header *) ch) - 1)->size * GRUB_MM_ALIGN; + grub_arch_sync_dma_caches (ch, size); + grub_free (ch); +} + +volatile void * +grub_dma_get_virt (struct grub_pci_dma_chunk *ch) +{ + return (void *) ch; +} + +grub_uint32_t +grub_dma_get_phys (struct grub_pci_dma_chunk *ch) +{ + return (grub_uint32_t) (grub_addr_t) ch; +} + |