netxen_nic.h

/*
 * Copyright (C) 2003 - 2009 NetXen, Inc.
 * Copyright (C) 2009 - QLogic Corporation.
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA  02111-1307, USA.
 *
 * The full GNU General Public License is included in this distribution
 * in the file called "COPYING".
 *
 */

#ifndef _NETXEN_NIC_H_
#define _NETXEN_NIC_H_

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/in.h>
#include <linux/tcp.h>
#include <linux/skbuff.h>
#include <linux/firmware.h>

#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/timer.h>

#include <linux/vmalloc.h>

#include <asm/io.h>
#include <asm/byteorder.h>

#include "netxen_nic_hdr.h"
#include "netxen_nic_hw.h"

#define _NETXEN_NIC_LINUX_MAJOR 4
#define _NETXEN_NIC_LINUX_MINOR 0
#define _NETXEN_NIC_LINUX_SUBVERSION 76
#define NETXEN_NIC_LINUX_VERSIONID  "4.0.76"

#define NETXEN_VERSION_CODE(a, b, c)	(((a) << 24) + ((b) << 16) + (c))
#define _major(v)	(((v) >> 24) & 0xff)
#define _minor(v)	(((v) >> 16) & 0xff)
#define _build(v)	((v) & 0xffff)

/* version in image has weird encoding:
 *  7:0  - major
 * 15:8  - minor
 * 31:16 - build (little endian)
 */
#define NETXEN_DECODE_VERSION(v) \
	NETXEN_VERSION_CODE(((v) & 0xff), (((v) >> 8) & 0xff), ((v) >> 16))

#define NETXEN_NUM_FLASH_SECTORS (64)
#define NETXEN_FLASH_SECTOR_SIZE (64 * 1024)
#define NETXEN_FLASH_TOTAL_SIZE  (NETXEN_NUM_FLASH_SECTORS \
					* NETXEN_FLASH_SECTOR_SIZE)

#define RCV_DESC_RINGSIZE(rds_ring)	\
	(sizeof(struct rcv_desc) * (rds_ring)->num_desc)
#define RCV_BUFF_RINGSIZE(rds_ring)	\
	(sizeof(struct netxen_rx_buffer) * rds_ring->num_desc)
#define STATUS_DESC_RINGSIZE(sds_ring)	\
	(sizeof(struct status_desc) * (sds_ring)->num_desc)
#define TX_BUFF_RINGSIZE(tx_ring)	\
	(sizeof(struct netxen_cmd_buffer) * tx_ring->num_desc)
#define TX_DESC_RINGSIZE(tx_ring)	\
	(sizeof(struct cmd_desc_type0) * tx_ring->num_desc)

#define find_diff_among(a,b,range) ((a)<(b)?((b)-(a)):((b)+(range)-(a)))

#define NETXEN_RCV_PRODUCER_OFFSET	0
#define NETXEN_RCV_PEG_DB_ID		2
#define NETXEN_HOST_DUMMY_DMA_SIZE 1024
#define FLASH_SUCCESS 0

#define ADDR_IN_WINDOW1(off)	\
	((off > NETXEN_CRB_PCIX_HOST2) && (off < NETXEN_CRB_MAX)) ? 1 : 0

#define ADDR_IN_RANGE(addr, low, high)	\
	(((addr) < (high)) && ((addr) >= (low)))

/*
 * normalize a 64MB crb address to 32MB PCI window
 * To use NETXEN_CRB_NORMALIZE, window _must_ be set to 1
 */
#define NETXEN_CRB_NORMAL(reg)	\
	((reg) - NETXEN_CRB_PCIX_HOST2 + NETXEN_CRB_PCIX_HOST)

#define NETXEN_CRB_NORMALIZE(adapter, reg) \
	pci_base_offset(adapter, NETXEN_CRB_NORMAL(reg))

#define DB_NORMALIZE(adapter, off) \
	(adapter->ahw.db_base + (off))

#define NX_P2_C0		0x24
#define NX_P2_C1		0x25
#define NX_P3_A0		0x30
#define NX_P3_A2		0x30
#define NX_P3_B0		0x40
#define NX_P3_B1		0x41
#define NX_P3_B2		0x42
#define NX_P3P_A0		0x50

#define NX_IS_REVISION_P2(REVISION)     (REVISION <= NX_P2_C1)
#define NX_IS_REVISION_P3(REVISION)     (REVISION >= NX_P3_A0)
#define NX_IS_REVISION_P3P(REVISION)     (REVISION >= NX_P3P_A0)

#define FIRST_PAGE_GROUP_START	0
#define FIRST_PAGE_GROUP_END	0x100000

#define SECOND_PAGE_GROUP_START	0x6000000
#define SECOND_PAGE_GROUP_END	0x68BC000

#define THIRD_PAGE_GROUP_START	0x70E4000
#define THIRD_PAGE_GROUP_END	0x8000000

#define FIRST_PAGE_GROUP_SIZE  FIRST_PAGE_GROUP_END - FIRST_PAGE_GROUP_START
#define SECOND_PAGE_GROUP_SIZE SECOND_PAGE_GROUP_END - SECOND_PAGE_GROUP_START
#define THIRD_PAGE_GROUP_SIZE  THIRD_PAGE_GROUP_END - THIRD_PAGE_GROUP_START

#define P2_MAX_MTU                     (8000)
#define P3_MAX_MTU                     (9600)
#define NX_ETHERMTU                    1500
#define NX_MAX_ETHERHDR                32 /* This contains some padding */

#define NX_P2_RX_BUF_MAX_LEN           1760
#define NX_P3_RX_BUF_MAX_LEN           (NX_MAX_ETHERHDR + NX_ETHERMTU)
#define NX_P2_RX_JUMBO_BUF_MAX_LEN     (NX_MAX_ETHERHDR + P2_MAX_MTU)
#define NX_P3_RX_JUMBO_BUF_MAX_LEN     (NX_MAX_ETHERHDR + P3_MAX_MTU)
#define NX_CT_DEFAULT_RX_BUF_LEN	2048
#define NX_LRO_BUFFER_EXTRA		2048

#define NX_RX_LRO_BUFFER_LENGTH		(8060)

/*
 * Maximum number of ring contexts
 */
#define MAX_RING_CTX 1

/* Opcodes to be used with the commands */
#define TX_ETHER_PKT	0x01
#define TX_TCP_PKT	0x02
#define TX_UDP_PKT	0x03
#define TX_IP_PKT	0x04
#define TX_TCP_LSO	0x05
#define TX_TCP_LSO6	0x06
#define TX_IPSEC	0x07
#define TX_IPSEC_CMD	0x0a
#define TX_TCPV6_PKT	0x0b
#define TX_UDPV6_PKT	0x0c

/* The following opcodes are for internal consumption. */
#define NETXEN_CONTROL_OP	0x10
#define PEGNET_REQUEST		0x11

#define	MAX_NUM_CARDS		4

#define NETXEN_MAX_FRAGS_PER_TX	14
#define MAX_TSO_HEADER_DESC	2
#define MGMT_CMD_DESC_RESV	4
#define TX_STOP_THRESH		((MAX_SKB_FRAGS >> 2) + MAX_TSO_HEADER_DESC \
							+ MGMT_CMD_DESC_RESV)
#define NX_MAX_TX_TIMEOUTS	2

/*
 * Following are the states of the Phantom. Phantom will set them and
 * Host will read to check if the fields are correct.
 */
#define PHAN_INITIALIZE_START		0xff00
#define PHAN_INITIALIZE_FAILED		0xffff
#define PHAN_INITIALIZE_COMPLETE	0xff01

/* Host writes the following to notify that it has done the init-handshake */
#define PHAN_INITIALIZE_ACK	0xf00f

#define NUM_RCV_DESC_RINGS	3
#define NUM_STS_DESC_RINGS	4

#define RCV_RING_NORMAL	0
#define RCV_RING_JUMBO	1
#define RCV_RING_LRO	2