| /* |
| * Copyright 2014, NICTA |
| * |
| * This software may be distributed and modified according to the terms of |
| * the BSD 2-Clause license. Note that NO WARRANTY is provided. |
| * See "LICENSE_BSD2.txt" for details. |
| * |
| * @TAG(NICTA_BSD) |
| */ |
| |
| #ifndef SEL4UTILS_PAGE_DMA_H |
| #define SEL4UTILS_PAGE_DMA_H |
| |
| #include <autoconf.h> |
| |
| #if defined(CONFIG_LIB_SEL4_VSPACE) && defined(CONFIG_LIB_SEL4_VKA) && defined(CONFIG_LIB_PLATSUPPORT) |
| |
| #include <sel4/sel4.h> |
| #include <vka/vka.h> |
| #include <vspace/vspace.h> |
| #include <platsupport/io.h> |
| |
| /** |
| * Creates an implementation of a dma manager that is designed to allocate at page granularity. Due |
| * to implementation details it will round up all allocations to the next power of 2, or 4k (whichever |
| * is larger). This allocator will put mappings into the vspace with custom cookie values and you |
| * must free all dma allocations before tearing down the vspace |
| * @param vka Allocation interface for allocating untypeds (for frames) and slots |
| * @param vspace Virtual memory manager used for mapping frames |
| * @param dma_man Pointer to dma manager struct that will be filled out |
| * @return 0 on success |
| */ |
| int sel4utils_new_page_dma_alloc(vka_t *vka, vspace_t *vspace, ps_dma_man_t *dma_man); |
| |
| #endif /* CONFIG_LIB_SEL4_VSPACE && CONFIG_LIB_SEL4_VKA && CONFIG_LIB_PLATSUPPORT */ |
| #endif /* SEL4_UTILS_PAGE_DMA_H */ |
