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

  Intel(R) 82576 Virtual Function Linux driver
  Copyright(c) 1999 - 2012 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, see <http://www.gnu.org/licenses/>.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

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

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

#ifndef _E1000_DEFINES_H_
#define _E1000_DEFINES_H_

/* Number of Transmit and Receive Descriptors must be a multiple of 8 */
#define REQ_TX_DESCRIPTOR_MULTIPLE	8
#define REQ_RX_DESCRIPTOR_MULTIPLE	8

/* IVAR valid bit */
#define E1000_IVAR_VALID	0x80

/* Receive Descriptor bit definitions */
#define E1000_RXD_STAT_DD	0x01    /* Descriptor Done */
#define E1000_RXD_STAT_EOP	0x02    /* End of Packet */
#define E1000_RXD_STAT_IXSM	0x04    /* Ignore checksum */
#define E1000_RXD_STAT_VP	0x08    /* IEEE VLAN Packet */
#define E1000_RXD_STAT_UDPCS	0x10    /* UDP xsum calculated */
#define E1000_RXD_STAT_TCPCS	0x20    /* TCP xsum calculated */
#define E1000_RXD_STAT_IPCS	0x40    /* IP xsum calculated */
#define E1000_RXD_ERR_SE	0x02    /* Symbol Error */
#define E1000_RXD_SPC_VLAN_MASK	0x0FFF  /* VLAN ID is in lower 12 bits */

#define E1000_RXDEXT_STATERR_LB	0x00040000
#define E1000_RXDEXT_STATERR_CE	0x01000000
#define E1000_RXDEXT_STATERR_SE	0x02000000
#define E1000_RXDEXT_STATERR_SEQ	0x04000000
#define E1000_RXDEXT_STATERR_CXE	0x10000000
#define E1000_RXDEXT_STATERR_TCPE	0x20000000
#define E1000_RXDEXT_STATERR_IPE	0x40000000
#define E1000_RXDEXT_STATERR_RXE	0x80000000

/* Same mask, but for extended and packet split descriptors */
#define E1000_RXDEXT_ERR_FRAME_ERR_MASK ( \
	E1000_RXDEXT_STATERR_CE  | \
	E1000_RXDEXT_STATERR_SE  | \
	E1000_RXDEXT_STATERR_SEQ | \
	E1000_RXDEXT_STATERR_CXE | \
	E1000_RXDEXT_STATERR_RXE)

/* Device Control */
#define E1000_CTRL_RST		0x04000000  /* Global reset */

/* Device Status */
#define E1000_STATUS_FD		0x00000001      /* Full duplex.0=half,1=full */
#define E1000_STATUS_LU		0x00000002      /* Link up.0=no,1=link */
#define E1000_STATUS_TXOFF	0x00000010      /* transmission paused */
#define E1000_STATUS_SPEED_10	0x00000000      /* Speed 10Mb/s */
#define E1000_STATUS_SPEED_100	0x00000040      /* Speed 100Mb/s */
#define E1000_STATUS_SPEED_1000	0x00000080      /* Speed 1000Mb/s */

#define SPEED_10	10
#define SPEED_100	100
#define SPEED_1000	1000
#define HALF_DUPLEX	1
#define FULL_DUPLEX	2

/* Transmit Descriptor bit definitions */
#define E1000_TXD_POPTS_IXSM	0x01       /* Insert IP checksum */
#define E1000_TXD_POPTS_TXSM	0x02       /* Insert TCP/UDP checksum */
#define E1000_TXD_CMD_DEXT	0x20000000 /* Desc extension (0 = legacy) */
#define E1000_TXD_STAT_DD	0x00000001 /* Desc Done */

#define MAX_JUMBO_FRAME_SIZE	0x3F00

/* 802.1q VLAN Packet Size */
#define VLAN_TAG_SIZE		4    /* 802.3ac tag (not DMA'd) */

/* Error Codes */
#define E1000_SUCCESS		0
#define E1000_ERR_CONFIG	3
#define E1000_ERR_MAC_INIT	5
#define E1000_ERR_MBX		15

/* SRRCTL bit definitions */
#define E1000_SRRCTL_BSIZEPKT_SHIFT		10 /* Shift _right_ */
#define E1000_SRRCTL_BSIZEHDRSIZE_MASK		0x00000F00
#define E1000_SRRCTL_BSIZEHDRSIZE_SHIFT		2  /* Shift _left_ */
#define E1000_SRRCTL_DESCTYPE_ADV_ONEBUF	0x02000000
#define E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS	0x0A000000
#define E1000_SRRCTL_DESCTYPE_MASK		0x0E000000
#define E1000_SRRCTL_DROP_EN			0x80000000

#define E1000_SRRCTL_BSIZEPKT_MASK	0x0000007F
#define E1000_SRRCTL_BSIZEHDR_MASK	0x00003F00

/* Additional Descriptor Control definitions */
#define E1000_TXDCTL_QUEUE_ENABLE	0x02000000 /* Enable specific Tx Que */
#define E1000_RXDCTL_QUEUE_ENABLE	0x02000000 /* Enable specific Rx Que */

/* Direct Cache Access (DCA) definitions */
#define E1000_DCA_TXCTRL_TX_WB_RO_EN	BIT(11) /* Tx Desc writeback RO bit */

#define E1000_VF_INIT_TIMEOUT	200 /* Number of retries to clear RSTI */

#endif /* _E1000_DEFINES_H_ */