1 /*
2  * Thunderbolt DMA configuration based mailbox support
3  *
4  * Copyright (C) 2017, Intel Corporation
5  * Authors: Michael Jamet <michael.jamet@intel.com>
6  *          Mika Westerberg <mika.westerberg@linux.intel.com>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  */
12 
13 #ifndef DMA_PORT_H_
14 #define DMA_PORT_H_
15 
16 #include "tb.h"
17 
18 struct tb_switch;
19 struct tb_dma_port;
20 
21 #define DMA_PORT_CSS_ADDRESS		0x3fffff
22 #define DMA_PORT_CSS_MAX_SIZE		SZ_128
23 
24 struct tb_dma_port *dma_port_alloc(struct tb_switch *sw);
25 void dma_port_free(struct tb_dma_port *dma);
26 int dma_port_flash_read(struct tb_dma_port *dma, unsigned int address,
27 			void *buf, size_t size);
28 int dma_port_flash_update_auth(struct tb_dma_port *dma);
29 int dma_port_flash_update_auth_status(struct tb_dma_port *dma, u32 *status);
30 int dma_port_flash_write(struct tb_dma_port *dma, unsigned int address,
31 			 const void *buf, size_t size);
32 int dma_port_power_cycle(struct tb_dma_port *dma);
33 
34 #endif
35