devices/e1000/e1000-2.6.22-ethercat.h
author Florian Pose <fp@igh-essen.com>
Thu, 06 Nov 2014 08:55:35 +0100
changeset 2596 d71acfbd7319
parent 789 beca96e44f9f
permissions -rw-r--r--
Removed obsolete mailbox type name and clarified documentation.
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/*******************************************************************************
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  Intel PRO/1000 Linux driver
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  Copyright(c) 1999 - 2006 Intel Corporation.
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  This program is free software; you can redistribute it and/or modify it
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  under the terms and conditions of the GNU General Public License,
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  version 2, as published by the Free Software Foundation.
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  This program is distributed in the hope it will be useful, but WITHOUT
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  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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  more details.
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  You should have received a copy of the GNU General Public License along with
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  this program; if not, write to the Free Software Foundation, Inc.,
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  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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  The full GNU General Public License is included in this distribution in
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  the file called "COPYING".
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  Contact Information:
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  Linux NICS <linux.nics@intel.com>
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  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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/* Linux PRO/1000 Ethernet Driver main header file */
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#ifndef _E1000_H_
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#define _E1000_H_
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#include <linux/stddef.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <asm/byteorder.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/errno.h>
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#include <linux/ioport.h>
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#include <linux/pci.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <linux/interrupt.h>
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#include <linux/string.h>
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#include <linux/pagemap.h>
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#include <linux/dma-mapping.h>
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#include <linux/bitops.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <linux/capability.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/ipv6.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#include <net/pkt_sched.h>
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#include <linux/list.h>
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#include <linux/reboot.h>
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#include <net/checksum.h>
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#include <linux/mii.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include "../ecdev.h"
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#define BAR_0		0
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#define BAR_1		1
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#define BAR_5		5
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#define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
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	PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
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struct e1000_adapter;
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#include "e1000_hw-2.6.22-ethercat.h"
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#ifdef DBG
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#define E1000_DBG(args...) printk(KERN_DEBUG "ec_e1000: " args)
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#else
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#define E1000_DBG(args...)
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#endif
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#define E1000_ERR(args...) printk(KERN_ERR "ec_e1000: " args)
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#define PFX "ec_e1000: "
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#define DPRINTK(nlevel, klevel, fmt, args...) \
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	(void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
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	printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
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		__FUNCTION__ , ## args))
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#define E1000_MAX_INTR 10
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/* TX/RX descriptor defines */
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#define E1000_DEFAULT_TXD                  256
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#define E1000_MAX_TXD                      256
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#define E1000_MIN_TXD                       80
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#define E1000_MAX_82544_TXD               4096
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#define E1000_DEFAULT_RXD                  256
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#define E1000_MAX_RXD                      256
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#define E1000_MIN_RXD                       80
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#define E1000_MAX_82544_RXD               4096
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/* this is the size past which hardware will drop packets when setting LPE=0 */
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#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
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/* Supported Rx Buffer Sizes */
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#define E1000_RXBUFFER_128   128    /* Used for packet split */
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#define E1000_RXBUFFER_256   256    /* Used for packet split */
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#define E1000_RXBUFFER_512   512
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#define E1000_RXBUFFER_1024  1024
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#define E1000_RXBUFFER_2048  2048
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#define E1000_RXBUFFER_4096  4096
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#define E1000_RXBUFFER_8192  8192
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#define E1000_RXBUFFER_16384 16384
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/* SmartSpeed delimiters */
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#define E1000_SMARTSPEED_DOWNSHIFT 3
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#define E1000_SMARTSPEED_MAX       15
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/* Packet Buffer allocations */
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#define E1000_PBA_BYTES_SHIFT 0xA
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#define E1000_TX_HEAD_ADDR_SHIFT 7
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#define E1000_PBA_TX_MASK 0xFFFF0000
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/* Flow Control Watermarks */
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#define E1000_FC_HIGH_DIFF 0x1638  /* High: 5688 bytes below Rx FIFO size */
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#define E1000_FC_LOW_DIFF 0x1640   /* Low:  5696 bytes below Rx FIFO size */
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#define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */
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/* How many Tx Descriptors do we need to call netif_wake_queue ? */
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#define E1000_TX_QUEUE_WAKE	16
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/* How many Rx Buffers do we bundle into one write to the hardware ? */
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#define E1000_RX_BUFFER_WRITE	16	/* Must be power of 2 */
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#define AUTO_ALL_MODES            0
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#define E1000_EEPROM_82544_APM    0x0004
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#define E1000_EEPROM_ICH8_APME    0x0004
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#define E1000_EEPROM_APME         0x0400
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#ifndef E1000_MASTER_SLAVE
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/* Switch to override PHY master/slave setting */
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#define E1000_MASTER_SLAVE	e1000_ms_hw_default
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#endif
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#define E1000_MNG_VLAN_NONE -1
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/* Number of packet split data buffers (not including the header buffer) */
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#define PS_PAGE_BUFFERS MAX_PS_BUFFERS-1
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/* wrapper around a pointer to a socket buffer,
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 * so a DMA handle can be stored along with the buffer */
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struct e1000_buffer {
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	struct sk_buff *skb;
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	dma_addr_t dma;
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	unsigned long time_stamp;
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	uint16_t length;
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	uint16_t next_to_watch;
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};
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struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; };
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struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; };
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struct e1000_tx_ring {
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	/* pointer to the descriptor ring memory */
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	void *desc;
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	/* physical address of the descriptor ring */
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	dma_addr_t dma;
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	/* length of descriptor ring in bytes */
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	unsigned int size;
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	/* number of descriptors in the ring */
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	unsigned int count;
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	/* next descriptor to associate a buffer with */
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	unsigned int next_to_use;
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	/* next descriptor to check for DD status bit */
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	unsigned int next_to_clean;
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	/* array of buffer information structs */
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	struct e1000_buffer *buffer_info;
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	spinlock_t tx_lock;
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	uint16_t tdh;
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	uint16_t tdt;
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	boolean_t last_tx_tso;
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};
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struct e1000_rx_ring {
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	/* pointer to the descriptor ring memory */
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	void *desc;
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	/* physical address of the descriptor ring */
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	dma_addr_t dma;
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	/* length of descriptor ring in bytes */
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	unsigned int size;
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	/* number of descriptors in the ring */
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	unsigned int count;
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	/* next descriptor to associate a buffer with */
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	unsigned int next_to_use;
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	/* next descriptor to check for DD status bit */
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	unsigned int next_to_clean;
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	/* array of buffer information structs */
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	struct e1000_buffer *buffer_info;
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	/* arrays of page information for packet split */
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	struct e1000_ps_page *ps_page;
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	struct e1000_ps_page_dma *ps_page_dma;
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	/* cpu for rx queue */
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	int cpu;
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	uint16_t rdh;
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	uint16_t rdt;
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};
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#define E1000_DESC_UNUSED(R) \
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	((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
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	(R)->next_to_clean - (R)->next_to_use - 1)
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#define E1000_RX_DESC_PS(R, i)	    \
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	(&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
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#define E1000_RX_DESC_EXT(R, i)	    \
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	(&(((union e1000_rx_desc_extended *)((R).desc))[i]))
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#define E1000_GET_DESC(R, i, type)	(&(((struct type *)((R).desc))[i]))
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#define E1000_RX_DESC(R, i)		E1000_GET_DESC(R, i, e1000_rx_desc)
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#define E1000_TX_DESC(R, i)		E1000_GET_DESC(R, i, e1000_tx_desc)
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#define E1000_CONTEXT_DESC(R, i)	E1000_GET_DESC(R, i, e1000_context_desc)
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/* board specific private data structure */
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struct e1000_adapter {
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	struct timer_list tx_fifo_stall_timer;
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	struct timer_list watchdog_timer;
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	struct timer_list phy_info_timer;
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	struct vlan_group *vlgrp;
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	uint16_t mng_vlan_id;
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	uint32_t bd_number;
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	uint32_t rx_buffer_len;
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	uint32_t wol;
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	uint32_t smartspeed;
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	uint32_t en_mng_pt;
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	uint16_t link_speed;
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	uint16_t link_duplex;
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	spinlock_t stats_lock;
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#ifdef CONFIG_E1000_NAPI
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	spinlock_t tx_queue_lock;
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#endif
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	atomic_t irq_sem;
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	unsigned int total_tx_bytes;
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	unsigned int total_tx_packets;
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	unsigned int total_rx_bytes;
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	unsigned int total_rx_packets;
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	/* Interrupt Throttle Rate */
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	uint32_t itr;
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	uint32_t itr_setting;
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	uint16_t tx_itr;
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	uint16_t rx_itr;
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	struct work_struct reset_task;
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	uint8_t fc_autoneg;
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	struct timer_list blink_timer;
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	unsigned long led_status;
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	/* TX */
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	struct e1000_tx_ring *tx_ring;      /* One per active queue */
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	unsigned int restart_queue;
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	unsigned long tx_queue_len;
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	uint32_t txd_cmd;
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	uint32_t tx_int_delay;
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	uint32_t tx_abs_int_delay;
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	uint32_t gotcl;
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	uint64_t gotcl_old;
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	uint64_t tpt_old;
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	uint64_t colc_old;
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	uint32_t tx_timeout_count;
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	uint32_t tx_fifo_head;
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	uint32_t tx_head_addr;
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	uint32_t tx_fifo_size;
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	uint8_t  tx_timeout_factor;
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	atomic_t tx_fifo_stall;
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	boolean_t pcix_82544;
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	boolean_t detect_tx_hung;
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	/* RX */
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#ifdef CONFIG_E1000_NAPI
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	boolean_t (*clean_rx) (struct e1000_adapter *adapter,
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			       struct e1000_rx_ring *rx_ring,
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			       int *work_done, int work_to_do);
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#else
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	boolean_t (*clean_rx) (struct e1000_adapter *adapter,
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			       struct e1000_rx_ring *rx_ring);
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#endif
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	void (*alloc_rx_buf) (struct e1000_adapter *adapter,
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			      struct e1000_rx_ring *rx_ring,
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				int cleaned_count);
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	struct e1000_rx_ring *rx_ring;      /* One per active queue */
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#ifdef CONFIG_E1000_NAPI
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	struct net_device *polling_netdev;  /* One per active queue */
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#endif
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	int num_tx_queues;
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	int num_rx_queues;
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	uint64_t hw_csum_err;
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	uint64_t hw_csum_good;
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	uint64_t rx_hdr_split;
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	uint32_t alloc_rx_buff_failed;
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	uint32_t rx_int_delay;
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	uint32_t rx_abs_int_delay;
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	boolean_t rx_csum;
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	unsigned int rx_ps_pages;
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	uint32_t gorcl;
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	uint64_t gorcl_old;
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	uint16_t rx_ps_bsize0;
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	/* OS defined structs */
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	struct net_device *netdev;
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	struct pci_dev *pdev;
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	struct net_device_stats net_stats;
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	/* structs defined in e1000_hw.h */
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	struct e1000_hw hw;
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	struct e1000_hw_stats stats;
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	struct e1000_phy_info phy_info;
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	struct e1000_phy_stats phy_stats;
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	uint32_t test_icr;
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	struct e1000_tx_ring test_tx_ring;
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	struct e1000_rx_ring test_rx_ring;
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	int msg_enable;
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	boolean_t have_msi;
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	/* to not mess up cache alignment, always add to the bottom */
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	boolean_t tso_force;
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	boolean_t smart_power_down;	/* phy smart power down */
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	boolean_t quad_port_a;
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	unsigned long flags;
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	uint32_t eeprom_wol;
789
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	ec_device_t *ecdev;
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    unsigned long ec_watchdog_jiffies;
788
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};
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enum e1000_state_t {
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	__E1000_TESTING,
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	__E1000_RESETTING,
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	__E1000_DOWN
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};
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#endif /* _E1000_H_ */