diff options
Diffstat (limited to 'drivers/thunderbolt/dma_port.h')
| -rw-r--r-- | drivers/thunderbolt/dma_port.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/thunderbolt/dma_port.h b/drivers/thunderbolt/dma_port.h new file mode 100644 index 000000000..7deadd97c --- /dev/null +++ b/drivers/thunderbolt/dma_port.h @@ -0,0 +1,31 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * 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> + */ + +#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 |