gve_register.h

/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 2023 Google LLC
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef _GVE_REGISTER_H_
#define _GVE_REGISTER_H_

/* Fixed Configuration Registers */
#define DEVICE_STATUS 0
#define DRIVER_STATUS 4
#define MAX_TX_QUEUES 8
#define MAX_RX_QUEUES 12
#define ADMINQ_PFN 16
#define ADMINQ_DOORBELL 20
#define ADMINQ_EVENT_COUNTER 24
#define RESERVED 28
#define DRIVER_VERSION 31
#define ADMINQ_BASE_ADDRESS_HI 32
#define ADMINQ_BASE_ADDRESS_LO 36
#define ADMINQ_LENGTH 40


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

#endif /* _GVE_REGISTER_H_ */