Lines Matching +full:dma +full:- +full:coherent

1 /* SPDX-License-Identifier: GPL-2.0 */
24  * arm_dma_alloc - allocate consistent memory for DMA
25  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
27  * @handle: bus-specific DMA address
30  * Allocate some memory for a device for performing DMA.  This function
31  * allocates pages, and will return the CPU-viewed address, and sets @handle
32  * to be the device-viewed address.
38  * arm_dma_free - free memory allocated by arm_dma_alloc
39  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
41  * @cpu_addr: CPU-view address returned from dma_alloc_coherent
42  * @handle: device-view address returned from dma_alloc_coherent
45  * Free (and unmap) a DMA buffer previously allocated by
55  * arm_dma_mmap - map a coherent DMA allocation into user space
56  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
58  * @cpu_addr: kernel CPU-view address returned from dma_alloc_coherent
59  * @handle: device-view address returned from dma_alloc_coherent
63  * Map a coherent DMA buffer previously allocated by dma_alloc_coherent
64  * into user space.  The coherent DMA buffer must not be freed by the
72  * For SA-1111, IXP425, and ADI systems  the dma-mapping functions are "magic"
73  * and utilize bounce buffers as needed to work around limited DMA windows.
75  * On the SA-1111, a bug limits DMA to only certain regions of RAM.
91  * This function should be called by low-level platform code to register
92  * a device as requireing DMA buffer bouncing. The function will allocate
93  * appropriate DMA pools for the device.
103  * This function should be called by low-level platform code when device