diff options
Diffstat (limited to 'src/interface')
| -rw-r--r-- | src/interface/efi/efi_pci.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/interface/efi/efi_pci.c b/src/interface/efi/efi_pci.c index 9f6bf952b..6b32fd6a9 100644 --- a/src/interface/efi/efi_pci.c +++ b/src/interface/efi/efi_pci.c @@ -505,6 +505,38 @@ static void efipci_dma_free ( struct dma_device *dma, struct dma_mapping *map, } /** + * Allocate and map DMA-coherent buffer from external (user) memory + * + * @v dma DMA device + * @v map DMA mapping to fill in + * @v len Length of buffer + * @v align Physical alignment + * @ret addr Buffer address, or NULL on error + */ +static userptr_t efipci_dma_umalloc ( struct dma_device *dma, + struct dma_mapping *map, + size_t len, size_t align ) { + void *addr; + + addr = efipci_dma_alloc ( dma, map, len, align ); + return virt_to_user ( addr ); +} + +/** + * Unmap and free DMA-coherent buffer from external (user) memory + * + * @v dma DMA device + * @v map DMA mapping + * @v addr Buffer address + * @v len Length of buffer + */ +static void efipci_dma_ufree ( struct dma_device *dma, struct dma_mapping *map, + userptr_t addr, size_t len ) { + + efipci_dma_free ( dma, map, user_to_virt ( addr, 0 ), len ); +} + +/** * Set addressable space mask * * @v dma DMA device @@ -542,6 +574,8 @@ static struct dma_operations efipci_dma_operations = { .unmap = efipci_dma_unmap, .alloc = efipci_dma_alloc, .free = efipci_dma_free, + .umalloc = efipci_dma_umalloc, + .ufree = efipci_dma_ufree, .set_mask = efipci_dma_set_mask, }; |