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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
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/*
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* Thunderbolt DMA configuration based mailbox support
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*
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* Copyright (C) 2017, Intel Corporation
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* Authors: Michael Jamet <michael.jamet@intel.com>
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* Mika Westerberg <mika.westerberg@linux.intel.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef DMA_PORT_H_
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#define DMA_PORT_H_
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#include "tb.h"
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struct tb_switch;
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struct tb_dma_port;
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#define DMA_PORT_CSS_ADDRESS 0x3fffff
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#define DMA_PORT_CSS_MAX_SIZE SZ_128
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struct tb_dma_port *dma_port_alloc(struct tb_switch *sw);
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void dma_port_free(struct tb_dma_port *dma);
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int dma_port_flash_read(struct tb_dma_port *dma, unsigned int address,
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void *buf, size_t size);
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int dma_port_flash_update_auth(struct tb_dma_port *dma);
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int dma_port_flash_update_auth_status(struct tb_dma_port *dma, u32 *status);
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int dma_port_flash_write(struct tb_dma_port *dma, unsigned int address,
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const void *buf, size_t size);
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int dma_port_power_cycle(struct tb_dma_port *dma);
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#endif
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