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