Merge tag 'devicetree-fixes-for-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel...
[platform/kernel/linux-rpi.git] / drivers / thunderbolt / dma_port.h
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