drivers/thunderbolt/dma_port.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 /*
0003  * Thunderbolt DMA configuration based mailbox support
0004  *
0005  * Copyright (C) 2017, Intel Corporation
0006  * Authors: Michael Jamet <michael.jamet@intel.com>
0007  *          Mika Westerberg <mika.westerberg@linux.intel.com>
0008  */
0009
0010 #ifndef DMA_PORT_H_
0011 #define DMA_PORT_H_
0012
0013 #include "tb.h"
0014
0015 struct tb_switch;
0016 struct tb_dma_port;
0017
0018 #define DMA_PORT_CSS_ADDRESS        0x3fffff
0019 #define DMA_PORT_CSS_MAX_SIZE       SZ_128
0020
0021 struct tb_dma_port *dma_port_alloc(struct tb_switch *sw);
0022 void dma_port_free(struct tb_dma_port *dma);
0023 int dma_port_flash_read(struct tb_dma_port *dma, unsigned int address,
0024             void *buf, size_t size);
0025 int dma_port_flash_update_auth(struct tb_dma_port *dma);
0026 int dma_port_flash_update_auth_status(struct tb_dma_port *dma, u32 *status);
0027 int dma_port_flash_write(struct tb_dma_port *dma, unsigned int address,
0028              const void *buf, size_t size);
0029 int dma_port_power_cycle(struct tb_dma_port *dma);
0030
0031 #endif