/*
   * Thunderbolt DMA configuration based mailbox support
   *
   * Copyright (C) 2017, Intel Corporation
   * Authors: Michael Jamet <michael.jamet@intel.com>
   *          Mika Westerberg <mika.westerberg@linux.intel.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #ifndef DMA_PORT_H_
  #define DMA_PORT_H_
  
  #include "tb.h"
  
  struct tb_switch;
  struct tb_dma_port;
  
  #define DMA_PORT_CSS_ADDRESS		0x3fffff
  #define DMA_PORT_CSS_MAX_SIZE		SZ_128
  
  struct tb_dma_port *dma_port_alloc(struct tb_switch *sw);
  void dma_port_free(struct tb_dma_port *dma);
  int dma_port_flash_read(struct tb_dma_port *dma, unsigned int address,
  			void *buf, size_t size);
  int dma_port_flash_update_auth(struct tb_dma_port *dma);
  int dma_port_flash_update_auth_status(struct tb_dma_port *dma, u32 *status);
  int dma_port_flash_write(struct tb_dma_port *dma, unsigned int address,
  			 const void *buf, size_t size);
  int dma_port_power_cycle(struct tb_dma_port *dma);
  
  #endif