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/* SPDX-License-Identifier: GPL-2.0 */
/*******************************************************************************

  Intel 10 Gigabit PCI Express Linux driver
  Copyright(c) 1999 - 2012 Intel Corporation.

  Contact Information:
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

#ifndef _IXGBE_MBX_H_
#define _IXGBE_MBX_H_

#include "ixgbe_type.h"

#define IXGBE_VFMAILBOX_SIZE	16 /* 16 32 bit words - 64 bytes */
#define IXGBE_ERR_MBX		-100

#define IXGBE_VFMAILBOX		0x002FC
#define IXGBE_VFMBMEM		0x00200

/* Define mailbox register bits */
#define IXGBE_VFMAILBOX_REQ	0x00000001 /* Request for PF Ready bit */
#define IXGBE_VFMAILBOX_ACK	0x00000002 /* Ack PF message received */
#define IXGBE_VFMAILBOX_VFU	0x00000004 /* VF owns the mailbox buffer */
#define IXGBE_VFMAILBOX_PFU	0x00000008 /* PF owns the mailbox buffer */
#define IXGBE_VFMAILBOX_PFSTS	0x00000010 /* PF wrote a message in the MB */
#define IXGBE_VFMAILBOX_PFACK	0x00000020 /* PF ack the previous VF msg */
#define IXGBE_VFMAILBOX_RSTI	0x00000040 /* PF has reset indication */
#define IXGBE_VFMAILBOX_RSTD	0x00000080 /* PF has indicated reset done */
#define IXGBE_VFMAILBOX_R2C_BITS	0x000000B0 /* All read to clear bits */

#define IXGBE_PFMAILBOX_STS	0x00000001 /* Initiate message send to VF */
#define IXGBE_PFMAILBOX_ACK	0x00000002 /* Ack message recv'd from VF */
#define IXGBE_PFMAILBOX_VFU	0x00000004 /* VF owns the mailbox buffer */
#define IXGBE_PFMAILBOX_PFU	0x00000008 /* PF owns the mailbox buffer */
#define IXGBE_PFMAILBOX_RVFU	0x00000010 /* Reset VFU - used when VF stuck */

#define IXGBE_MBVFICR_VFREQ_MASK	0x0000FFFF /* bits for VF messages */
#define IXGBE_MBVFICR_VFREQ_VF1		0x00000001 /* bit for VF 1 message */
#define IXGBE_MBVFICR_VFACK_MASK	0xFFFF0000 /* bits for VF acks */
#define IXGBE_MBVFICR_VFACK_VF1		0x00010000 /* bit for VF 1 ack */


/* If it's a IXGBE_VF_* msg then it originates in the VF and is sent to the
 * PF.  The reverse is true if it is IXGBE_PF_*.
 * Message ACK's are the value or'd with 0xF0000000
 */
#define IXGBE_VT_MSGTYPE_ACK	0x80000000 /* Messages below or'd with
					    * this are the ACK */
#define IXGBE_VT_MSGTYPE_NACK	0x40000000 /* Messages below or'd with
					    * this are the NACK */
#define IXGBE_VT_MSGTYPE_CTS	0x20000000 /* Indicates that VF is still
					    * clear to send requests */
#define IXGBE_VT_MSGINFO_SHIFT	16
/* bits 23:16 are used for extra info for certain messages */
#define IXGBE_VT_MSGINFO_MASK	(0xFF << IXGBE_VT_MSGINFO_SHIFT)

#define IXGBE_VF_RESET		0x01 /* VF requests reset */
#define IXGBE_VF_SET_MAC_ADDR	0x02 /* VF requests PF to set MAC addr */
#define IXGBE_VF_SET_MULTICAST	0x03 /* VF requests PF to set MC addr */
#define IXGBE_VF_SET_VLAN	0x04 /* VF requests PF to set VLAN */
#define IXGBE_VF_SET_LPE	0x05 /* VF requests PF to set VMOLR.LPE */
#define IXGBE_VF_SET_MACVLAN	0x06 /* VF requests PF for unicast filter */

/* length of permanent address message returned from PF */
#define IXGBE_VF_PERMADDR_MSG_LEN	4
/* word in permanent address message with the current multicast type */
#define IXGBE_VF_MC_TYPE_WORD		3

#define IXGBE_PF_CONTROL_MSG		0x0100 /* PF control message */


#define IXGBE_VF_MBX_INIT_TIMEOUT	2000 /* number of retries on mailbox */
#define IXGBE_VF_MBX_INIT_DELAY		500  /* microseconds between retries */

s32 ixgbe_read_mbx(struct ixgbe_hw *, u32 *, u16, u16);
s32 ixgbe_write_mbx(struct ixgbe_hw *, u32 *, u16, u16);
s32 ixgbe_read_posted_mbx(struct ixgbe_hw *, u32 *, u16, u16);
s32 ixgbe_write_posted_mbx(struct ixgbe_hw *, u32 *, u16, u16);
s32 ixgbe_check_for_msg(struct ixgbe_hw *, u16);
s32 ixgbe_check_for_ack(struct ixgbe_hw *, u16);
s32 ixgbe_check_for_rst(struct ixgbe_hw *, u16);
void ixgbe_init_mbx_ops_generic(struct ixgbe_hw *hw);
void ixgbe_init_mbx_params_vf(struct ixgbe_hw *);
void ixgbe_init_mbx_params_pf(struct ixgbe_hw *);

#endif /* _IXGBE_MBX_H_ */