Lines Matching full:memory

3  * Pointer to dma-buf-mapped memory, plus helpers.
15  * Calling dma-buf's vmap operation returns a pointer to the buffer's memory.
17  * I/O operations or memory load/store operations. For example, copying to
18  * system memory could be done with memcpy(), copying to I/O memory would be
23  *	void *vaddr = ...; // pointer to system memory
26  *	void *vaddr_iomem = ...; // pointer to I/O memory
32  * system or I/O memory and a flag that signals the required method of
34  * to access the buffer's memory in the correct way.
38  * among devices, drivers have to know the location of the memory to access
49  * dma_buf_map_set_vaddr(). These helpers will set an address in system memory.
57  * To set an address in I/O memory, use dma_buf_map_set_vaddr_iomem().
65  * always refer to system memory.
81  * memory spaces, system or I/O, are never equal. That's even true if both
87  *	struct dma_buf_map sys_map; // refers to system memory
88  *	struct dma_buf_map io_map; // refers to I/O memory
94  * the buffer memory. Depending on the location of the memory, the provided
95  * helpers will pick the correct operations. Data can be copied into the memory
109  * struct dma_buf_map - Pointer to vmap'ed dma-buf memory.
110  * @vaddr_iomem:	The buffer's address if in I/O memory
111  * @vaddr:		The buffer's address if in system memory
112  * @is_iomem:		True if the dma-buf memory is located in I/O
113  *			memory, or false otherwise.
124  * DMA_BUF_MAP_INIT_VADDR - Initializes struct dma_buf_map to an address in system memory
125  * @vaddr_:	A system-memory address
134  * dma_buf_map_set_vaddr - Sets a dma-buf mapping structure to an address in system memory
136  * @vaddr:	A system-memory address
138  * Sets the address and clears the I/O-memory flag.
147  * dma_buf_map_set_vaddr_iomem - Sets a dma-buf mapping structure to an address in I/O memory
149  * @vaddr_iomem:	An I/O-memory address
151  * Sets the address and the I/O-memory flag.
165  * Two dma-buf mapping structures are equal if they both refer to the same type of memory
166  * and to the same address within that memory.
219  * mapping structures that were set to point to I/O memory are reset for
220  * system memory. Pointers are cleared to NULL. This is the default.
239  * memory. Depending on the buffer's location, the helper picks the correct
240  * method of accessing the memory.