1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  * Thunderbolt DMA configuration based mailbox support
4  *
5  * Copyright (C) 2017, Intel Corporation
6  * Authors: Michael Jamet <michael.jamet@intel.com>
7  *          Mika Westerberg <mika.westerberg@linux.intel.com>
8  */
9 
10 #ifndef DMA_PORT_H_
11 #define DMA_PORT_H_
12 
13 #include "tb.h"
14 
15 struct tb_switch;
16 struct tb_dma_port;
17 
18 #define DMA_PORT_CSS_ADDRESS		0x3fffff
19 #define DMA_PORT_CSS_MAX_SIZE		SZ_128
20 
21 struct tb_dma_port *dma_port_alloc(struct tb_switch *sw);
22 void dma_port_free(struct tb_dma_port *dma);
23 int dma_port_flash_read(struct tb_dma_port *dma, unsigned int address,
24 			void *buf, size_t size);
25 int dma_port_flash_update_auth(struct tb_dma_port *dma);
26 int dma_port_flash_update_auth_status(struct tb_dma_port *dma, u32 *status);
27 int dma_port_flash_write(struct tb_dma_port *dma, unsigned int address,
28 			 const void *buf, size_t size);
29 int dma_port_power_cycle(struct tb_dma_port *dma);
30 
31 #endif
32