drivers/thunderbolt/dma_port.h

   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