drivers/net/ethernet/google/gve/gve_register.h

/* SPDX-License-Identifier: (GPL-2.0 OR MIT)
 * Google virtual Ethernet (gve) driver
 *
 * Copyright (C) 2015-2019 Google, Inc.
 */

#ifndef _GVE_REGISTER_H_
#define _GVE_REGISTER_H_

/* Fixed Configuration Registers */
struct gve_registers {
	__be32	device_status;
	__be32	driver_status;
	__be32	max_tx_queues;
	__be32	max_rx_queues;
	__be32	adminq_pfn;
	__be32	adminq_doorbell;
	__be32	adminq_event_counter;
	u8	reserved[3];
	u8	driver_version;
};

enum gve_device_status_flags {
	GVE_DEVICE_STATUS_RESET_MASK		= BIT(1),
	GVE_DEVICE_STATUS_LINK_STATUS_MASK	= BIT(2),
	GVE_DEVICE_STATUS_REPORT_STATS_MASK	= BIT(3),
};

#define GVE_RESET_REASON_SIZE 5

enum gve_reset_reason {
       GVE_RESET_REASON_UNKNOWN,
       GVE_RESET_REASON_RESET_BY_USER,
       GVE_RESET_REASON_DRIVER_SHUTDOWN,
       GVE_RESET_REASON_DRIVER_SUSPENDED,
       GVE_RESET_REASON_CREATE_RINGS_FAILED,
       GVE_RESET_REASON_REGISTER_QPLS_FAILED,
       GVE_RESET_REASON_DRIVER_TEARDOWN_FAILED,
       GVE_RESET_REASON_TX_TIMEOUT,
       GVE_RESET_REASON_TX_MISS_PATH_TIMEOUT,
       GVE_RESET_REASON_RX_ERROR,
       GVE_RESET_REASON_DEVICE_REQUESTED,
       GVE_RESET_REASON_DRIVER_REMOVED,
       GVE_RESET_REASON_DEVICE_FAILURE,
       GVE_NUM_RESET_REASONS, /* Not a reset reason */
};

static_assert(GVE_NUM_RESET_REASONS <= (1 << GVE_RESET_REASON_SIZE));
#endif /* _GVE_REGISTER_H_ */