From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@ppc970.osdl.org>
Date: Sat, 16 Apr 2005 15:20:36 -0700
Subject: Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
---
 drivers/net/s2io.h | 760 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 760 insertions(+)
 create mode 100644 drivers/net/s2io.h

(limited to 'drivers/net/s2io.h')

diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
new file mode 100644
index 00000000000..1711c8c3dc9
--- /dev/null
+++ b/drivers/net/s2io.h
@@ -0,0 +1,760 @@
+/************************************************************************
+ * s2io.h: A Linux PCI-X Ethernet driver for S2IO 10GbE Server NIC
+ * Copyright(c) 2002-2005 Neterion Inc.
+
+ * This software may be used and distributed according to the terms of
+ * the GNU General Public License (GPL), incorporated herein by reference.
+ * Drivers based on or derived from this code fall under the GPL and must
+ * retain the authorship, copyright and license notice.  This file is not
+ * a complete program and may only be used when the entire operating
+ * system is licensed under the GPL.
+ * See the file COPYING in this distribution for more information.
+ ************************************************************************/
+#ifndef _S2IO_H
+#define _S2IO_H
+
+#define TBD 0
+#define BIT(loc)		(0x8000000000000000ULL >> (loc))
+#define vBIT(val, loc, sz)	(((u64)val) << (64-loc-sz))
+#define INV(d)  ((d&0xff)<<24) | (((d>>8)&0xff)<<16) | (((d>>16)&0xff)<<8)| ((d>>24)&0xff)
+
+#ifndef BOOL
+#define BOOL    int
+#endif
+
+#ifndef TRUE
+#define TRUE    1
+#define FALSE   0
+#endif
+
+#undef SUCCESS
+#define SUCCESS 0
+#define FAILURE -1
+
+/* Maximum outstanding splits to be configured into xena. */
+typedef enum xena_max_outstanding_splits {
+	XENA_ONE_SPLIT_TRANSACTION = 0,
+	XENA_TWO_SPLIT_TRANSACTION = 1,
+	XENA_THREE_SPLIT_TRANSACTION = 2,
+	XENA_FOUR_SPLIT_TRANSACTION = 3,
+	XENA_EIGHT_SPLIT_TRANSACTION = 4,
+	XENA_TWELVE_SPLIT_TRANSACTION = 5,
+	XENA_SIXTEEN_SPLIT_TRANSACTION = 6,
+	XENA_THIRTYTWO_SPLIT_TRANSACTION = 7
+} xena_max_outstanding_splits;
+#define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
+
+/*  OS concerned variables and constants */
+#define WATCH_DOG_TIMEOUT   	5*HZ
+#define EFILL       			0x1234
+#define ALIGN_SIZE  			127
+#define	PCIX_COMMAND_REGISTER	0x62
+
+/*
+ * Debug related variables.
+ */
+/* different debug levels. */
+#define	ERR_DBG		0
+#define	INIT_DBG	1
+#define	INFO_DBG	2
+#define	TX_DBG		3
+#define	INTR_DBG	4
+
+/* Global variable that defines the present debug level of the driver. */
+static int debug_level = ERR_DBG;	/* Default level. */
+
+/* DEBUG message print. */
+#define DBG_PRINT(dbg_level, args...)  if(!(debug_level<dbg_level)) printk(args)
+
+/* Protocol assist features of the NIC */
+#define L3_CKSUM_OK 0xFFFF
+#define L4_CKSUM_OK 0xFFFF
+#define S2IO_JUMBO_SIZE 9600
+
+/* The statistics block of Xena */
+typedef struct stat_block {
+/* Tx MAC statistics counters. */
+	u32 tmac_data_octets;
+	u32 tmac_frms;
+	u64 tmac_drop_frms;
+	u32 tmac_bcst_frms;
+	u32 tmac_mcst_frms;
+	u64 tmac_pause_ctrl_frms;
+	u32 tmac_ucst_frms;
+	u32 tmac_ttl_octets;
+	u32 tmac_any_err_frms;
+	u32 tmac_nucst_frms;
+	u64 tmac_ttl_less_fb_octets;
+	u64 tmac_vld_ip_octets;
+	u32 tmac_drop_ip;
+	u32 tmac_vld_ip;
+	u32 tmac_rst_tcp;
+	u32 tmac_icmp;
+	u64 tmac_tcp;
+	u32 reserved_0;
+	u32 tmac_udp;
+
+/* Rx MAC Statistics counters. */
+	u32 rmac_data_octets;
+	u32 rmac_vld_frms;
+	u64 rmac_fcs_err_frms;
+	u64 rmac_drop_frms;
+	u32 rmac_vld_bcst_frms;
+	u32 rmac_vld_mcst_frms;
+	u32 rmac_out_rng_len_err_frms;
+	u32 rmac_in_rng_len_err_frms;
+	u64 rmac_long_frms;
+	u64 rmac_pause_ctrl_frms;
+	u64 rmac_unsup_ctrl_frms;
+	u32 rmac_accepted_ucst_frms;
+	u32 rmac_ttl_octets;
+	u32 rmac_discarded_frms;
+	u32 rmac_accepted_nucst_frms;
+	u32 reserved_1;
+	u32 rmac_drop_events;
+	u64 rmac_ttl_less_fb_octets;
+	u64 rmac_ttl_frms;
+	u64 reserved_2;
+	u32 rmac_usized_frms;
+	u32 reserved_3;
+	u32 rmac_frag_frms;
+	u32 rmac_osized_frms;
+	u32 reserved_4;
+	u32 rmac_jabber_frms;
+	u64 rmac_ttl_64_frms;
+	u64 rmac_ttl_65_127_frms;
+	u64 reserved_5;
+	u64 rmac_ttl_128_255_frms;
+	u64 rmac_ttl_256_511_frms;
+	u64 reserved_6;
+	u64 rmac_ttl_512_1023_frms;
+	u64 rmac_ttl_1024_1518_frms;
+	u32 rmac_ip;
+	u32 reserved_7;
+	u64 rmac_ip_octets;
+	u32 rmac_drop_ip;
+	u32 rmac_hdr_err_ip;
+	u32 reserved_8;
+	u32 rmac_icmp;
+	u64 rmac_tcp;
+	u32 rmac_err_drp_udp;
+	u32 rmac_udp;
+	u64 rmac_xgmii_err_sym;
+	u64 rmac_frms_q0;
+	u64 rmac_frms_q1;
+	u64 rmac_frms_q2;
+	u64 rmac_frms_q3;
+	u64 rmac_frms_q4;
+	u64 rmac_frms_q5;
+	u64 rmac_frms_q6;
+	u64 rmac_frms_q7;
+	u16 rmac_full_q3;
+	u16 rmac_full_q2;
+	u16 rmac_full_q1;
+	u16 rmac_full_q0;
+	u16 rmac_full_q7;
+	u16 rmac_full_q6;
+	u16 rmac_full_q5;
+	u16 rmac_full_q4;
+	u32 reserved_9;
+	u32 rmac_pause_cnt;
+	u64 rmac_xgmii_data_err_cnt;
+	u64 rmac_xgmii_ctrl_err_cnt;
+	u32 rmac_err_tcp;
+	u32 rmac_accepted_ip;
+
+/* PCI/PCI-X Read transaction statistics. */
+	u32 new_rd_req_cnt;
+	u32 rd_req_cnt;
+	u32 rd_rtry_cnt;
+	u32 new_rd_req_rtry_cnt;
+
+/* PCI/PCI-X Write/Read transaction statistics. */
+	u32 wr_req_cnt;
+	u32 wr_rtry_rd_ack_cnt;
+	u32 new_wr_req_rtry_cnt;
+	u32 new_wr_req_cnt;
+	u32 wr_disc_cnt;
+	u32 wr_rtry_cnt;
+
+/*	PCI/PCI-X Write / DMA Transaction statistics. */
+	u32 txp_wr_cnt;
+	u32 rd_rtry_wr_ack_cnt;
+	u32 txd_wr_cnt;
+	u32 txd_rd_cnt;
+	u32 rxd_wr_cnt;
+	u32 rxd_rd_cnt;
+	u32 rxf_wr_cnt;
+	u32 txf_rd_cnt;
+} StatInfo_t;
+
+/* Structures representing different init time configuration
+ * parameters of the NIC.
+ */
+
+/* Maintains Per FIFO related information. */
+typedef struct tx_fifo_config {
+#define	MAX_AVAILABLE_TXDS	8192
+	u32 fifo_len;		/* specifies len of FIFO upto 8192, ie no of TxDLs */
+/* Priority definition */
+#define TX_FIFO_PRI_0               0	/*Highest */
+#define TX_FIFO_PRI_1               1
+#define TX_FIFO_PRI_2               2
+#define TX_FIFO_PRI_3               3
+#define TX_FIFO_PRI_4               4
+#define TX_FIFO_PRI_5               5
+#define TX_FIFO_PRI_6               6
+#define TX_FIFO_PRI_7               7	/*lowest */
+	u8 fifo_priority;	/* specifies pointer level for FIFO */
+	/* user should not set twos fifos with same pri */
+	u8 f_no_snoop;
+#define NO_SNOOP_TXD                0x01
+#define NO_SNOOP_TXD_BUFFER          0x02
+} tx_fifo_config_t;
+
+
+/* Maintains per Ring related information */
+typedef struct rx_ring_config {
+	u32 num_rxd;		/*No of RxDs per Rx Ring */
+#define RX_RING_PRI_0               0	/* highest */
+#define RX_RING_PRI_1               1
+#define RX_RING_PRI_2               2
+#define RX_RING_PRI_3               3
+#define RX_RING_PRI_4               4
+#define RX_RING_PRI_5               5
+#define RX_RING_PRI_6               6
+#define RX_RING_PRI_7               7	/* lowest */
+
+	u8 ring_priority;	/*Specifies service priority of ring */
+	/* OSM should not set any two rings with same priority */
+	u8 ring_org;		/*Organization of ring */
+#define RING_ORG_BUFF1		0x01
+#define RX_RING_ORG_BUFF3	0x03
+#define RX_RING_ORG_BUFF5	0x05
+
+	u8 f_no_snoop;
+#define NO_SNOOP_RXD                0x01
+#define NO_SNOOP_RXD_BUFFER         0x02
+} rx_ring_config_t;
+
+/* This structure provides contains values of the tunable parameters 
+ * of the H/W 
+ */
+struct config_param {
+/* Tx Side */
+	u32 tx_fifo_num;	/*Number of Tx FIFOs */
+#define MAX_TX_FIFOS 8
+
+	tx_fifo_config_t tx_cfg[MAX_TX_FIFOS];	/*Per-Tx FIFO config */
+	u32 max_txds;		/*Max no. of Tx buffer descriptor per TxDL */
+	u64 tx_intr_type;
+	/* Specifies if Tx Intr is UTILZ or PER_LIST type. */
+
+/* Rx Side */
+	u32 rx_ring_num;	/*Number of receive rings */
+#define MAX_RX_RINGS 8
+#define MAX_RX_BLOCKS_PER_RING  150
+
+	rx_ring_config_t rx_cfg[MAX_RX_RINGS];	/*Per-Rx Ring config */
+
+#define HEADER_ETHERNET_II_802_3_SIZE 14
+#define HEADER_802_2_SIZE              3
+#define HEADER_SNAP_SIZE               5
+#define HEADER_VLAN_SIZE               4
+
+#define MIN_MTU                       46
+#define MAX_PYLD                    1500
+#define MAX_MTU                     (MAX_PYLD+18)
+#define MAX_MTU_VLAN                (MAX_PYLD+22)
+#define MAX_PYLD_JUMBO              9600
+#define MAX_MTU_JUMBO               (MAX_PYLD_JUMBO+18)
+#define MAX_MTU_JUMBO_VLAN          (MAX_PYLD_JUMBO+22)
+};
+
+/* Structure representing MAC Addrs */
+typedef struct mac_addr {
+	u8 mac_addr[ETH_ALEN];
+} macaddr_t;
+
+/* Structure that represent every FIFO element in the BAR1
+ * Address location. 
+ */
+typedef struct _TxFIFO_element {
+	u64 TxDL_Pointer;
+
+	u64 List_Control;
+#define TX_FIFO_LAST_TXD_NUM( val)     vBIT(val,0,8)
+#define TX_FIFO_FIRST_LIST             BIT(14)
+#define TX_FIFO_LAST_LIST              BIT(15)
+#define TX_FIFO_FIRSTNLAST_LIST        vBIT(3,14,2)
+#define TX_FIFO_SPECIAL_FUNC           BIT(23)
+#define TX_FIFO_DS_NO_SNOOP            BIT(31)
+#define TX_FIFO_BUFF_NO_SNOOP          BIT(30)
+} TxFIFO_element_t;
+
+/* Tx descriptor structure */
+typedef struct _TxD {
+	u64 Control_1;
+/* bit mask */
+#define TXD_LIST_OWN_XENA       BIT(7)
+#define TXD_T_CODE              (BIT(12)|BIT(13)|BIT(14)|BIT(15))
+#define TXD_T_CODE_OK(val)      (|(val & TXD_T_CODE))
+#define GET_TXD_T_CODE(val)     ((val & TXD_T_CODE)<<12)
+#define TXD_GATHER_CODE         (BIT(22) | BIT(23))
+#define TXD_GATHER_CODE_FIRST   BIT(22)
+#define TXD_GATHER_CODE_LAST    BIT(23)
+#define TXD_TCP_LSO_EN          BIT(30)
+#define TXD_UDP_COF_EN          BIT(31)
+#define TXD_TCP_LSO_MSS(val)    vBIT(val,34,14)
+#define TXD_BUFFER0_SIZE(val)   vBIT(val,48,16)
+
+	u64 Control_2;
+#define TXD_TX_CKO_CONTROL      (BIT(5)|BIT(6)|BIT(7))
+#define TXD_TX_CKO_IPV4_EN      BIT(5)
+#define TXD_TX_CKO_TCP_EN       BIT(6)
+#define TXD_TX_CKO_UDP_EN       BIT(7)
+#define TXD_VLAN_ENABLE         BIT(15)
+#define TXD_VLAN_TAG(val)       vBIT(val,16,16)
+#define TXD_INT_NUMBER(val)     vBIT(val,34,6)
+#define TXD_INT_TYPE_PER_LIST   BIT(47)
+#define TXD_INT_TYPE_UTILZ      BIT(46)
+#define TXD_SET_MARKER         vBIT(0x6,0,4)
+
+	u64 Buffer_Pointer;
+	u64 Host_Control;	/* reserved for host */
+} TxD_t;
+
+/* Structure to hold the phy and virt addr of every TxDL. */
+typedef struct list_info_hold {
+	dma_addr_t list_phy_addr;
+	void *list_virt_addr;
+} list_info_hold_t;
+
+/* Rx descriptor structure */
+typedef struct _RxD_t {
+	u64 Host_Control;	/* reserved for host */
+	u64 Control_1;
+#define RXD_OWN_XENA            BIT(7)
+#define RXD_T_CODE              (BIT(12)|BIT(13)|BIT(14)|BIT(15))
+#define RXD_FRAME_PROTO         vBIT(0xFFFF,24,8)
+#define RXD_FRAME_PROTO_IPV4    BIT(27)
+#define RXD_FRAME_PROTO_IPV6    BIT(28)
+#define RXD_FRAME_PROTO_TCP     BIT(30)
+#define RXD_FRAME_PROTO_UDP     BIT(31)
+#define TCP_OR_UDP_FRAME        (RXD_FRAME_PROTO_TCP | RXD_FRAME_PROTO_UDP)
+#define RXD_GET_L3_CKSUM(val)   ((u16)(val>> 16) & 0xFFFF)
+#define RXD_GET_L4_CKSUM(val)   ((u16)(val) & 0xFFFF)
+
+	u64 Control_2;
+#ifndef CONFIG_2BUFF_MODE
+#define MASK_BUFFER0_SIZE       vBIT(0xFFFF,0,16)
+#define SET_BUFFER0_SIZE(val)   vBIT(val,0,16)
+#else
+#define MASK_BUFFER0_SIZE       vBIT(0xFF,0,16)
+#define MASK_BUFFER1_SIZE       vBIT(0xFFFF,16,16)
+#define MASK_BUFFER2_SIZE       vBIT(0xFFFF,32,16)
+#define SET_BUFFER0_SIZE(val)   vBIT(val,8,8)
+#define SET_BUFFER1_SIZE(val)   vBIT(val,16,16)
+#define SET_BUFFER2_SIZE(val)   vBIT(val,32,16)
+#endif
+
+#define MASK_VLAN_TAG           vBIT(0xFFFF,48,16)
+#define SET_VLAN_TAG(val)       vBIT(val,48,16)
+#define SET_NUM_TAG(val)       vBIT(val,16,32)
+
+#ifndef CONFIG_2BUFF_MODE
+#define RXD_GET_BUFFER0_SIZE(Control_2) (u64)((Control_2 & vBIT(0xFFFF,0,16)))
+#else
+#define RXD_GET_BUFFER0_SIZE(Control_2) (u8)((Control_2 & MASK_BUFFER0_SIZE) \
+							>> 48)
+#define RXD_GET_BUFFER1_SIZE(Control_2) (u16)((Control_2 & MASK_BUFFER1_SIZE) \
+							>> 32)
+#define RXD_GET_BUFFER2_SIZE(Control_2) (u16)((Control_2 & MASK_BUFFER2_SIZE) \
+							>> 16)
+#define BUF0_LEN	40
+#define BUF1_LEN	1
+#endif
+
+	u64 Buffer0_ptr;
+#ifdef CONFIG_2BUFF_MODE
+	u64 Buffer1_ptr;
+	u64 Buffer2_ptr;
+#endif
+} RxD_t;
+
+/* Structure that represents the Rx descriptor block which contains 
+ * 128 Rx descriptors.
+ */
+#ifndef CONFIG_2BUFF_MODE
+typedef struct _RxD_block {
+#define MAX_RXDS_PER_BLOCK             127
+	RxD_t rxd[MAX_RXDS_PER_BLOCK];
+
+	u64 reserved_0;
+#define END_OF_BLOCK    0xFEFFFFFFFFFFFFFFULL
+	u64 reserved_1;		/* 0xFEFFFFFFFFFFFFFF to mark last 
+				 * Rxd in this blk */
+	u64 reserved_2_pNext_RxD_block;	/* Logical ptr to next */
+	u64 pNext_RxD_Blk_physical;	/* Buff0_ptr.In a 32 bit arch
+					 * the upper 32 bits should 
+					 * be 0 */
+} RxD_block_t;
+#else
+typedef struct _RxD_block {
+#define MAX_RXDS_PER_BLOCK             85
+	RxD_t rxd[MAX_RXDS_PER_BLOCK];
+
+#define END_OF_BLOCK    0xFEFFFFFFFFFFFFFFULL
+	u64 reserved_1;		/* 0xFEFFFFFFFFFFFFFF to mark last Rxd 
+				 * in this blk */
+	u64 pNext_RxD_Blk_physical;	/* Phy ponter to next blk. */
+} RxD_block_t;
+#define SIZE_OF_BLOCK	4096
+
+/* Structure to hold virtual addresses of Buf0 and Buf1 in 
+ * 2buf mode. */
+typedef struct bufAdd {
+	void *ba_0_org;
+	void *ba_1_org;
+	void *ba_0;
+	void *ba_1;
+} buffAdd_t;
+#endif
+
+/* Structure which stores all the MAC control parameters */
+
+/* This structure stores the offset of the RxD in the ring 
+ * from which the Rx Interrupt processor can start picking 
+ * up the RxDs for processing.
+ */
+typedef struct _rx_curr_get_info_t {
+	u32 block_index;
+	u32 offset;
+	u32 ring_len;
+} rx_curr_get_info_t;
+
+typedef rx_curr_get_info_t rx_curr_put_info_t;
+
+/* This structure stores the offset of the TxDl in the FIFO
+ * from which the Tx Interrupt processor can start picking 
+ * up the TxDLs for send complete interrupt processing.
+ */
+typedef struct {
+	u32 offset;
+	u32 fifo_len;
+} tx_curr_get_info_t;
+
+typedef tx_curr_get_info_t tx_curr_put_info_t;
+
+/* Infomation related to the Tx and Rx FIFOs and Rings of Xena
+ * is maintained in this structure.
+ */
+typedef struct mac_info {
+/* rx side stuff */
+	/* Put pointer info which indictes which RxD has to be replenished 
+	 * with a new buffer.
+	 */
+	rx_curr_put_info_t rx_curr_put_info[MAX_RX_RINGS];
+
+	/* Get pointer info which indictes which is the last RxD that was 
+	 * processed by the driver.
+	 */
+	rx_curr_get_info_t rx_curr_get_info[MAX_RX_RINGS];
+
+	u16 rmac_pause_time;
+	u16 mc_pause_threshold_q0q3;
+	u16 mc_pause_threshold_q4q7;
+
+/* tx side stuff */
+	/* logical pointer of start of each Tx FIFO */
+	TxFIFO_element_t __iomem *tx_FIFO_start[MAX_TX_FIFOS];
+
+/* Current offset within tx_FIFO_start, where driver would write new Tx frame*/
+	tx_curr_put_info_t tx_curr_put_info[MAX_TX_FIFOS];
+	tx_curr_get_info_t tx_curr_get_info[MAX_TX_FIFOS];
+
+	void *stats_mem;	/* orignal pointer to allocated mem */
+	dma_addr_t stats_mem_phy;	/* Physical address of the stat block */
+	u32 stats_mem_sz;
+	StatInfo_t *stats_info;	/* Logical address of the stat block */
+} mac_info_t;
+
+/* structure representing the user defined MAC addresses */
+typedef struct {
+	char addr[ETH_ALEN];
+	int usage_cnt;
+} usr_addr_t;
+
+/* Structure that holds the Phy and virt addresses of the Blocks */
+typedef struct rx_block_info {
+	RxD_t *block_virt_addr;
+	dma_addr_t block_dma_addr;
+} rx_block_info_t;
+
+/* Default Tunable parameters of the NIC. */
+#define DEFAULT_FIFO_LEN 4096
+#define SMALL_RXD_CNT	30 * (MAX_RXDS_PER_BLOCK+1)
+#define LARGE_RXD_CNT	100 * (MAX_RXDS_PER_BLOCK+1)
+#define SMALL_BLK_CNT	30
+#define LARGE_BLK_CNT	100
+
+/* Structure representing one instance of the NIC */
+typedef struct s2io_nic {
+#define MAX_MAC_SUPPORTED   16
+#define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
+
+	macaddr_t def_mac_addr[MAX_MAC_SUPPORTED];
+	macaddr_t pre_mac_addr[MAX_MAC_SUPPORTED];
+
+	struct net_device_stats stats;
+	void __iomem *bar0;
+	void __iomem *bar1;
+	struct config_param config;
+	mac_info_t mac_control;
+	int high_dma_flag;
+	int device_close_flag;
+	int device_enabled_once;
+
+	char name[32];
+	struct tasklet_struct task;
+	volatile unsigned long tasklet_status;
+	struct timer_list timer;
+	struct net_device *dev;
+	struct pci_dev *pdev;
+
+	u16 vendor_id;
+	u16 device_id;
+	u16 ccmd;
+	u32 cbar0_1;
+	u32 cbar0_2;
+	u32 cbar1_1;
+	u32 cbar1_2;
+	u32 cirq;
+	u8 cache_line;
+	u32 rom_expansion;
+	u16 pcix_cmd;
+	u32 irq;
+	atomic_t rx_bufs_left[MAX_RX_RINGS];
+
+	spinlock_t tx_lock;
+#ifndef CONFIG_S2IO_NAPI
+	spinlock_t put_lock;
+#endif
+
+#define PROMISC     1
+#define ALL_MULTI   2
+
+#define MAX_ADDRS_SUPPORTED 64
+	u16 usr_addr_count;
+	u16 mc_addr_count;
+	usr_addr_t usr_addrs[MAX_ADDRS_SUPPORTED];
+
+	u16 m_cast_flg;
+	u16 all_multi_pos;
+	u16 promisc_flg;
+
+	u16 tx_pkt_count;
+	u16 rx_pkt_count;
+	u16 tx_err_count;
+	u16 rx_err_count;
+
+#ifndef CONFIG_S2IO_NAPI
+	/* Index to the absolute position of the put pointer of Rx ring. */
+	int put_pos[MAX_RX_RINGS];
+#endif
+
+	/*
+	 *  Place holders for the virtual and physical addresses of 
+	 *  all the Rx Blocks
+	 */
+	rx_block_info_t rx_blocks[MAX_RX_RINGS][MAX_RX_BLOCKS_PER_RING];
+	int block_count[MAX_RX_RINGS];
+	int pkt_cnt[MAX_RX_RINGS];
+
+	/* Place holder of all the TX List's Phy and Virt addresses. */
+	list_info_hold_t *list_info[MAX_TX_FIFOS];
+
+	/*  Id timer, used to blink NIC to physically identify NIC. */
+	struct timer_list id_timer;
+
+	/*  Restart timer, used to restart NIC if the device is stuck and
+	 *  a schedule task that will set the correct Link state once the 
+	 *  NIC's PHY has stabilized after a state change.
+	 */
+#ifdef INIT_TQUEUE
+	struct tq_struct rst_timer_task;
+	struct tq_struct set_link_task;
+#else
+	struct work_struct rst_timer_task;
+	struct work_struct set_link_task;
+#endif
+
+	/* Flag that can be used to turn on or turn off the Rx checksum 
+	 * offload feature.
+	 */
+	int rx_csum;
+
+	/*  after blink, the adapter must be restored with original 
+	 *  values.
+	 */
+	u64 adapt_ctrl_org;
+
+	/* Last known link state. */
+	u16 last_link_state;
+#define	LINK_DOWN	1
+#define	LINK_UP		2
+
+#ifdef CONFIG_2BUFF_MODE
+	/* Buffer Address store. */
+	buffAdd_t **ba[MAX_RX_RINGS];
+#endif
+	int task_flag;
+#define CARD_DOWN 1
+#define CARD_UP 2
+	atomic_t card_state;
+	volatile unsigned long link_state;
+} nic_t;
+
+#define RESET_ERROR 1;
+#define CMD_ERROR   2;
+
+/*  OS related system calls */
+#ifndef readq
+static inline u64 readq(void __iomem *addr)
+{
+	u64 ret = readl(addr + 4);
+	ret <<= 32;
+	ret |= readl(addr);
+
+	return ret;
+}
+#endif
+
+#ifndef writeq
+static inline void writeq(u64 val, void __iomem *addr)
+{
+	writel((u32) (val), addr);
+	writel((u32) (val >> 32), (addr + 4));
+}
+
+/* In 32 bit modes, some registers have to be written in a 
+ * particular order to expect correct hardware operation. The
+ * macro SPECIAL_REG_WRITE is used to perform such ordered 
+ * writes. Defines UF (Upper First) and LF (Lower First) will 
+ * be used to specify the required write order.
+ */
+#define UF	1
+#define LF	2
+static inline void SPECIAL_REG_WRITE(u64 val, void __iomem *addr, int order)
+{
+	if (order == LF) {
+		writel((u32) (val), addr);
+		writel((u32) (val >> 32), (addr + 4));
+	} else {
+		writel((u32) (val >> 32), (addr + 4));
+		writel((u32) (val), addr);
+	}
+}
+#else
+#define SPECIAL_REG_WRITE(val, addr, dummy) writeq(val, addr)
+#endif
+
+/*  Interrupt related values of Xena */
+
+#define ENABLE_INTRS    1
+#define DISABLE_INTRS   2
+
+/*  Highest level interrupt blocks */
+#define TX_PIC_INTR     (0x0001<<0)
+#define TX_DMA_INTR     (0x0001<<1)
+#define TX_MAC_INTR     (0x0001<<2)
+#define TX_XGXS_INTR    (0x0001<<3)
+#define TX_TRAFFIC_INTR (0x0001<<4)
+#define RX_PIC_INTR     (0x0001<<5)
+#define RX_DMA_INTR     (0x0001<<6)
+#define RX_MAC_INTR     (0x0001<<7)
+#define RX_XGXS_INTR    (0x0001<<8)
+#define RX_TRAFFIC_INTR (0x0001<<9)
+#define MC_INTR         (0x0001<<10)
+#define ENA_ALL_INTRS    (   TX_PIC_INTR     | \
+                            TX_DMA_INTR     | \
+                            TX_MAC_INTR     | \
+                            TX_XGXS_INTR    | \
+                            TX_TRAFFIC_INTR | \
+                            RX_PIC_INTR     | \
+                            RX_DMA_INTR     | \
+                            RX_MAC_INTR     | \
+                            RX_XGXS_INTR    | \
+                            RX_TRAFFIC_INTR | \
+                            MC_INTR )
+
+/*  Interrupt masks for the general interrupt mask register */
+#define DISABLE_ALL_INTRS   0xFFFFFFFFFFFFFFFFULL
+
+#define TXPIC_INT_M         BIT(0)
+#define TXDMA_INT_M         BIT(1)
+#define TXMAC_INT_M         BIT(2)
+#define TXXGXS_INT_M        BIT(3)
+#define TXTRAFFIC_INT_M     BIT(8)
+#define PIC_RX_INT_M        BIT(32)
+#define RXDMA_INT_M         BIT(33)
+#define RXMAC_INT_M         BIT(34)
+#define MC_INT_M            BIT(35)
+#define RXXGXS_INT_M        BIT(36)
+#define RXTRAFFIC_INT_M     BIT(40)
+
+/*  PIC level Interrupts TODO*/
+
+/*  DMA level Inressupts */
+#define TXDMA_PFC_INT_M     BIT(0)
+#define TXDMA_PCC_INT_M     BIT(2)
+
+/*  PFC block interrupts */
+#define PFC_MISC_ERR_1      BIT(0)	/* Interrupt to indicate FIFO full */
+
+/* PCC block interrupts. */
+#define	PCC_FB_ECC_ERR	   vBIT(0xff, 16, 8)	/* Interrupt to indicate
+						   PCC_FB_ECC Error. */
+
+/*
+ * Prototype declaration.
+ */
+static int __devinit s2io_init_nic(struct pci_dev *pdev,
+				   const struct pci_device_id *pre);
+static void __devexit s2io_rem_nic(struct pci_dev *pdev);
+static int init_shared_mem(struct s2io_nic *sp);
+static void free_shared_mem(struct s2io_nic *sp);
+static int init_nic(struct s2io_nic *nic);
+#ifndef CONFIG_S2IO_NAPI
+static void rx_intr_handler(struct s2io_nic *sp);
+#endif
+static void tx_intr_handler(struct s2io_nic *sp);
+static void alarm_intr_handler(struct s2io_nic *sp);
+
+static int s2io_starter(void);
+static void s2io_closer(void);
+static void s2io_tx_watchdog(struct net_device *dev);
+static void s2io_tasklet(unsigned long dev_addr);
+static void s2io_set_multicast(struct net_device *dev);
+#ifndef CONFIG_2BUFF_MODE
+static int rx_osm_handler(nic_t * sp, u16 len, RxD_t * rxdp, int ring_no);
+#else
+static int rx_osm_handler(nic_t * sp, RxD_t * rxdp, int ring_no,
+			  buffAdd_t * ba);
+#endif
+static void s2io_link(nic_t * sp, int link);
+static void s2io_reset(nic_t * sp);
+#ifdef CONFIG_S2IO_NAPI
+static int s2io_poll(struct net_device *dev, int *budget);
+#endif
+static void s2io_init_pci(nic_t * sp);
+static int s2io_set_mac_addr(struct net_device *dev, u8 * addr);
+static irqreturn_t s2io_isr(int irq, void *dev_id, struct pt_regs *regs);
+static int verify_xena_quiescence(u64 val64, int flag);
+static struct ethtool_ops netdev_ethtool_ops;
+static void s2io_set_link(unsigned long data);
+static int s2io_set_swapper(nic_t * sp);
+static void s2io_card_down(nic_t * nic);
+static int s2io_card_up(nic_t * nic);
+
+#endif				/* _S2IO_H */
-- 
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