LXR linux/drivers/thunderbolt/dma

   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
  18struct tb_switch;
  19struct tb_dma_port;
  20
  21#define DMA_PORT_CSS_ADDRESS            0x3fffff
  22#define DMA_PORT_CSS_MAX_SIZE           SZ_128
  23
  24struct tb_dma_port *dma_port_alloc(struct tb_switch *sw);
  25void dma_port_free(struct tb_dma_port *dma);
  26int dma_port_flash_read(struct tb_dma_port *dma, unsigned int address,
  27                        void *buf, size_t size);
  28int dma_port_flash_update_auth(struct tb_dma_port *dma);
  29int dma_port_flash_update_auth_status(struct tb_dma_port *dma, u32 *status);
  30int dma_port_flash_write(struct tb_dma_port *dma, unsigned int address,
  31                         const void *buf, size_t size);
  32int dma_port_power_cycle(struct tb_dma_port *dma);
  33
  34#endif
  35