Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1145 insertions, 0 deletions

diff --git a/drivers/net/ethernet/neterion/s2io.h b/drivers/net/ethernet/neterion/s2io.h
new file mode 100644
index 000000000..1a24a7218
--- /dev/null
+++ b/drivers/net/ethernet/neterion/s2io.h
@@ -0,0 +1,1145 @@
+/************************************************************************
+ * s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
+ * Copyright(c) 2002-2010 Exar Corp.
+
+ * 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 s2BIT(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)
+
+#undef SUCCESS
+#define SUCCESS 0
+#define FAILURE -1
+#define S2IO_MINUS_ONE 0xFFFFFFFFFFFFFFFFULL
+#define S2IO_DISABLE_MAC_ENTRY 0xFFFFFFFFFFFFULL
+#define S2IO_MAX_PCI_CONFIG_SPACE_REINIT 100
+#define S2IO_BIT_RESET 1
+#define S2IO_BIT_SET 2
+#define CHECKBIT(value, nbit) (value & (1 << nbit))
+
+/* Maximum time to flicker LED when asked to identify NIC using ethtool */
+#define MAX_FLICKER_TIME	60000 /* 60 Secs */
+
+/* Maximum outstanding splits to be configured into xena. */
+enum {
+	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
+};
+#define XENA_MAX_OUTSTANDING_SPLITS(n) (n << 4)
+
+/*  OS concerned variables and constants */
+#define WATCH_DOG_TIMEOUT		15*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;
+
+/* DEBUG message print. */
+#define DBG_PRINT(dbg_level, fmt, args...) do {			\
+	if (dbg_level <= debug_level)				\
+		pr_info(fmt, ##args);				\
+	} while (0)
+
+/* Protocol assist features of the NIC */
+#define L3_CKSUM_OK 0xFFFF
+#define L4_CKSUM_OK 0xFFFF
+#define S2IO_JUMBO_SIZE 9600
+
+/* Driver statistics maintained by driver */
+struct swStat {
+	unsigned long long single_ecc_errs;
+	unsigned long long double_ecc_errs;
+	unsigned long long parity_err_cnt;
+	unsigned long long serious_err_cnt;
+	unsigned long long soft_reset_cnt;
+	unsigned long long fifo_full_cnt;
+	unsigned long long ring_full_cnt[8];
+	/* LRO statistics */
+	unsigned long long clubbed_frms_cnt;
+	unsigned long long sending_both;
+	unsigned long long outof_sequence_pkts;
+	unsigned long long flush_max_pkts;
+	unsigned long long sum_avg_pkts_aggregated;
+	unsigned long long num_aggregations;
+	/* Other statistics */
+	unsigned long long mem_alloc_fail_cnt;
+	unsigned long long pci_map_fail_cnt;
+	unsigned long long watchdog_timer_cnt;
+	unsigned long long mem_allocated;
+	unsigned long long mem_freed;
+	unsigned long long link_up_cnt;
+	unsigned long long link_down_cnt;
+	unsigned long long link_up_time;
+	unsigned long long link_down_time;
+
+	/* Transfer Code statistics */
+	unsigned long long tx_buf_abort_cnt;
+	unsigned long long tx_desc_abort_cnt;
+	unsigned long long tx_parity_err_cnt;
+	unsigned long long tx_link_loss_cnt;
+	unsigned long long tx_list_proc_err_cnt;
+
+	unsigned long long rx_parity_err_cnt;
+	unsigned long long rx_abort_cnt;
+	unsigned long long rx_parity_abort_cnt;
+	unsigned long long rx_rda_fail_cnt;
+	unsigned long long rx_unkn_prot_cnt;
+	unsigned long long rx_fcs_err_cnt;
+	unsigned long long rx_buf_size_err_cnt;
+	unsigned long long rx_rxd_corrupt_cnt;
+	unsigned long long rx_unkn_err_cnt;
+
+	/* Error/alarm statistics*/
+	unsigned long long tda_err_cnt;
+	unsigned long long pfc_err_cnt;
+	unsigned long long pcc_err_cnt;
+	unsigned long long tti_err_cnt;
+	unsigned long long lso_err_cnt;
+	unsigned long long tpa_err_cnt;
+	unsigned long long sm_err_cnt;
+	unsigned long long mac_tmac_err_cnt;
+	unsigned long long mac_rmac_err_cnt;
+	unsigned long long xgxs_txgxs_err_cnt;
+	unsigned long long xgxs_rxgxs_err_cnt;
+	unsigned long long rc_err_cnt;
+	unsigned long long prc_pcix_err_cnt;
+	unsigned long long rpa_err_cnt;
+	unsigned long long rda_err_cnt;
+	unsigned long long rti_err_cnt;
+	unsigned long long mc_err_cnt;
+
+};
+
+/* Xpak releated alarm and warnings */
+struct xpakStat {
+	u64 alarm_transceiver_temp_high;
+	u64 alarm_transceiver_temp_low;
+	u64 alarm_laser_bias_current_high;
+	u64 alarm_laser_bias_current_low;
+	u64 alarm_laser_output_power_high;
+	u64 alarm_laser_output_power_low;
+	u64 warn_transceiver_temp_high;
+	u64 warn_transceiver_temp_low;
+	u64 warn_laser_bias_current_high;
+	u64 warn_laser_bias_current_low;
+	u64 warn_laser_output_power_high;
+	u64 warn_laser_output_power_low;
+	u64 xpak_regs_stat;
+	u32 xpak_timer_count;
+};
+
+
+/* The statistics block of Xena */
+struct stat_block {
+/* Tx MAC statistics counters. */
+	__le32 tmac_data_octets;
+	__le32 tmac_frms;
+	__le64 tmac_drop_frms;
+	__le32 tmac_bcst_frms;
+	__le32 tmac_mcst_frms;
+	__le64 tmac_pause_ctrl_frms;
+	__le32 tmac_ucst_frms;
+	__le32 tmac_ttl_octets;
+	__le32 tmac_any_err_frms;
+	__le32 tmac_nucst_frms;
+	__le64 tmac_ttl_less_fb_octets;
+	__le64 tmac_vld_ip_octets;
+	__le32 tmac_drop_ip;
+	__le32 tmac_vld_ip;
+	__le32 tmac_rst_tcp;
+	__le32 tmac_icmp;
+	__le64 tmac_tcp;
+	__le32 reserved_0;
+	__le32 tmac_udp;
+
+/* Rx MAC Statistics counters. */
+	__le32 rmac_data_octets;
+	__le32 rmac_vld_frms;
+	__le64 rmac_fcs_err_frms;
+	__le64 rmac_drop_frms;
+	__le32 rmac_vld_bcst_frms;
+	__le32 rmac_vld_mcst_frms;
+	__le32 rmac_out_rng_len_err_frms;
+	__le32 rmac_in_rng_len_err_frms;
+	__le64 rmac_long_frms;
+	__le64 rmac_pause_ctrl_frms;
+	__le64 rmac_unsup_ctrl_frms;
+	__le32 rmac_accepted_ucst_frms;
+	__le32 rmac_ttl_octets;
+	__le32 rmac_discarded_frms;
+	__le32 rmac_accepted_nucst_frms;
+	__le32 reserved_1;
+	__le32 rmac_drop_events;
+	__le64 rmac_ttl_less_fb_octets;
+	__le64 rmac_ttl_frms;
+	__le64 reserved_2;
+	__le32 rmac_usized_frms;
+	__le32 reserved_3;
+	__le32 rmac_frag_frms;
+	__le32 rmac_osized_frms;
+	__le32 reserved_4;
+	__le32 rmac_jabber_frms;
+	__le64 rmac_ttl_64_frms;
+	__le64 rmac_ttl_65_127_frms;
+	__le64 reserved_5;
+	__le64 rmac_ttl_128_255_frms;
+	__le64 rmac_ttl_256_511_frms;
+	__le64 reserved_6;
+	__le64 rmac_ttl_512_1023_frms;
+	__le64 rmac_ttl_1024_1518_frms;
+	__le32 rmac_ip;
+	__le32 reserved_7;
+	__le64 rmac_ip_octets;
+	__le32 rmac_drop_ip;
+	__le32 rmac_hdr_err_ip;
+	__le32 reserved_8;
+	__le32 rmac_icmp;
+	__le64 rmac_tcp;
+	__le32 rmac_err_drp_udp;
+	__le32 rmac_udp;
+	__le64 rmac_xgmii_err_sym;
+	__le64 rmac_frms_q0;
+	__le64 rmac_frms_q1;
+	__le64 rmac_frms_q2;
+	__le64 rmac_frms_q3;
+	__le64 rmac_frms_q4;
+	__le64 rmac_frms_q5;
+	__le64 rmac_frms_q6;
+	__le64 rmac_frms_q7;
+	__le16 rmac_full_q3;
+	__le16 rmac_full_q2;
+	__le16 rmac_full_q1;
+	__le16 rmac_full_q0;
+	__le16 rmac_full_q7;
+	__le16 rmac_full_q6;
+	__le16 rmac_full_q5;
+	__le16 rmac_full_q4;
+	__le32 reserved_9;
+	__le32 rmac_pause_cnt;
+	__le64 rmac_xgmii_data_err_cnt;
+	__le64 rmac_xgmii_ctrl_err_cnt;
+	__le32 rmac_err_tcp;
+	__le32 rmac_accepted_ip;
+
+/* PCI/PCI-X Read transaction statistics. */
+	__le32 new_rd_req_cnt;
+	__le32 rd_req_cnt;
+	__le32 rd_rtry_cnt;
+	__le32 new_rd_req_rtry_cnt;
+
+/* PCI/PCI-X Write/Read transaction statistics. */
+	__le32 wr_req_cnt;
+	__le32 wr_rtry_rd_ack_cnt;
+	__le32 new_wr_req_rtry_cnt;
+	__le32 new_wr_req_cnt;
+	__le32 wr_disc_cnt;
+	__le32 wr_rtry_cnt;
+
+/*	PCI/PCI-X Write / DMA Transaction statistics. */
+	__le32 txp_wr_cnt;
+	__le32 rd_rtry_wr_ack_cnt;
+	__le32 txd_wr_cnt;
+	__le32 txd_rd_cnt;
+	__le32 rxd_wr_cnt;
+	__le32 rxd_rd_cnt;
+	__le32 rxf_wr_cnt;
+	__le32 txf_rd_cnt;
+
+/* Tx MAC statistics overflow counters. */
+	__le32 tmac_data_octets_oflow;
+	__le32 tmac_frms_oflow;
+	__le32 tmac_bcst_frms_oflow;
+	__le32 tmac_mcst_frms_oflow;
+	__le32 tmac_ucst_frms_oflow;
+	__le32 tmac_ttl_octets_oflow;
+	__le32 tmac_any_err_frms_oflow;
+	__le32 tmac_nucst_frms_oflow;
+	__le64 tmac_vlan_frms;
+	__le32 tmac_drop_ip_oflow;
+	__le32 tmac_vld_ip_oflow;
+	__le32 tmac_rst_tcp_oflow;
+	__le32 tmac_icmp_oflow;
+	__le32 tpa_unknown_protocol;
+	__le32 tmac_udp_oflow;
+	__le32 reserved_10;
+	__le32 tpa_parse_failure;
+
+/* Rx MAC Statistics overflow counters. */
+	__le32 rmac_data_octets_oflow;
+	__le32 rmac_vld_frms_oflow;
+	__le32 rmac_vld_bcst_frms_oflow;
+	__le32 rmac_vld_mcst_frms_oflow;
+	__le32 rmac_accepted_ucst_frms_oflow;
+	__le32 rmac_ttl_octets_oflow;
+	__le32 rmac_discarded_frms_oflow;
+	__le32 rmac_accepted_nucst_frms_oflow;
+	__le32 rmac_usized_frms_oflow;
+	__le32 rmac_drop_events_oflow;
+	__le32 rmac_frag_frms_oflow;
+	__le32 rmac_osized_frms_oflow;
+	__le32 rmac_ip_oflow;
+	__le32 rmac_jabber_frms_oflow;
+	__le32 rmac_icmp_oflow;
+	__le32 rmac_drop_ip_oflow;
+	__le32 rmac_err_drp_udp_oflow;
+	__le32 rmac_udp_oflow;
+	__le32 reserved_11;
+	__le32 rmac_pause_cnt_oflow;
+	__le64 rmac_ttl_1519_4095_frms;
+	__le64 rmac_ttl_4096_8191_frms;
+	__le64 rmac_ttl_8192_max_frms;
+	__le64 rmac_ttl_gt_max_frms;
+	__le64 rmac_osized_alt_frms;
+	__le64 rmac_jabber_alt_frms;
+	__le64 rmac_gt_max_alt_frms;
+	__le64 rmac_vlan_frms;
+	__le32 rmac_len_discard;
+	__le32 rmac_fcs_discard;
+	__le32 rmac_pf_discard;
+	__le32 rmac_da_discard;
+	__le32 rmac_red_discard;
+	__le32 rmac_rts_discard;
+	__le32 reserved_12;
+	__le32 rmac_ingm_full_discard;
+	__le32 reserved_13;
+	__le32 rmac_accepted_ip_oflow;
+	__le32 reserved_14;
+	__le32 link_fault_cnt;
+	u8  buffer[20];
+	struct swStat sw_stat;
+	struct xpakStat xpak_stat;
+};
+
+/* Default value for 'vlan_strip_tag' configuration parameter */
+#define NO_STRIP_IN_PROMISC 2
+
+/*
+ * Structures representing different init time configuration
+ * parameters of the NIC.
+ */
+
+#define MAX_TX_FIFOS 8
+#define MAX_RX_RINGS 8
+
+#define FIFO_DEFAULT_NUM	5
+#define FIFO_UDP_MAX_NUM			2 /* 0 - even, 1 -odd ports */
+#define FIFO_OTHER_MAX_NUM			1
+
+
+#define MAX_RX_DESC_1  (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 128)
+#define MAX_RX_DESC_2  (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 86)
+#define MAX_TX_DESC    (MAX_AVAILABLE_TXDS)
+
+/* FIFO mappings for all possible number of fifos configured */
+static const int fifo_map[][MAX_TX_FIFOS] = {
+	{0, 0, 0, 0, 0, 0, 0, 0},
+	{0, 0, 0, 0, 1, 1, 1, 1},
+	{0, 0, 0, 1, 1, 1, 2, 2},
+	{0, 0, 1, 1, 2, 2, 3, 3},
+	{0, 0, 1, 1, 2, 2, 3, 4},
+	{0, 0, 1, 1, 2, 3, 4, 5},
+	{0, 0, 1, 2, 3, 4, 5, 6},
+	{0, 1, 2, 3, 4, 5, 6, 7},
+};
+
+static const u16 fifo_selector[MAX_TX_FIFOS] = {0, 1, 3, 3, 7, 7, 7, 7};
+
+/* Maintains Per FIFO related information. */
+struct tx_fifo_config {
+#define	MAX_AVAILABLE_TXDS	8192
+	u32 fifo_len;		/* specifies len of FIFO up to 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
+};
+
+
+/* Maintains per Ring related information */
+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
+};
+
+/* 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 */
+
+	/* 0-No steering, 1-Priority steering, 2-Default fifo map */
+#define	NO_STEERING				0
+#define	TX_PRIORITY_STEERING			0x1
+#define TX_DEFAULT_STEERING 			0x2
+	u8 tx_steering_type;
+
+	u8 fifo_mapping[MAX_TX_FIFOS];
+	struct tx_fifo_config tx_cfg[MAX_TX_FIFOS];	/*Per-Tx FIFO config */
+	u32 max_txds;		/*Max no. of Tx buffer descriptor per TxDL */
+	u64 tx_intr_type;
+#define INTA	0
+#define MSI_X	2
+	u8 intr_type;
+	u8 napi;
+
+	/* Specifies if Tx Intr is UTILZ or PER_LIST type. */
+
+/* Rx Side */
+	u32 rx_ring_num;	/*Number of receive rings */
+#define MAX_RX_BLOCKS_PER_RING  150
+
+	struct rx_ring_config 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)
+	u16 bus_speed;
+	int max_mc_addr;	/* xena=64 herc=256 */
+	int max_mac_addr;	/* xena=16 herc=64 */
+	int mc_start_offset;	/* xena=16 herc=64 */
+	u8 multiq;
+};
+
+/* Structure representing MAC Addrs */
+struct mac_addr {
+	u8 mac_addr[ETH_ALEN];
+};
+
+/* Structure that represent every FIFO element in the BAR1
+ * Address location.
+ */
+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             s2BIT(14)
+#define TX_FIFO_LAST_LIST              s2BIT(15)
+#define TX_FIFO_FIRSTNLAST_LIST        vBIT(3,14,2)
+#define TX_FIFO_SPECIAL_FUNC           s2BIT(23)
+#define TX_FIFO_DS_NO_SNOOP            s2BIT(31)
+#define TX_FIFO_BUFF_NO_SNOOP          s2BIT(30)
+};
+
+/* Tx descriptor structure */
+struct TxD {
+	u64 Control_1;
+/* bit mask */
+#define TXD_LIST_OWN_XENA       s2BIT(7)
+#define TXD_T_CODE              (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(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         (s2BIT(22) | s2BIT(23))
+#define TXD_GATHER_CODE_FIRST   s2BIT(22)
+#define TXD_GATHER_CODE_LAST    s2BIT(23)
+#define TXD_TCP_LSO_EN          s2BIT(30)
+#define TXD_UDP_COF_EN          s2BIT(31)
+#define TXD_UFO_EN		s2BIT(31) | s2BIT(30)
+#define TXD_TCP_LSO_MSS(val)    vBIT(val,34,14)
+#define TXD_UFO_MSS(val)	vBIT(val,34,14)
+#define TXD_BUFFER0_SIZE(val)   vBIT(val,48,16)
+
+	u64 Control_2;
+#define TXD_TX_CKO_CONTROL      (s2BIT(5)|s2BIT(6)|s2BIT(7))
+#define TXD_TX_CKO_IPV4_EN      s2BIT(5)
+#define TXD_TX_CKO_TCP_EN       s2BIT(6)
+#define TXD_TX_CKO_UDP_EN       s2BIT(7)
+#define TXD_VLAN_ENABLE         s2BIT(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   s2BIT(47)
+#define TXD_INT_TYPE_UTILZ      s2BIT(46)
+#define TXD_SET_MARKER         vBIT(0x6,0,4)
+
+	u64 Buffer_Pointer;
+	u64 Host_Control;	/* reserved for host */
+};
+
+/* Structure to hold the phy and virt addr of every TxDL. */
+struct list_info_hold {
+	dma_addr_t list_phy_addr;
+	void *list_virt_addr;
+};
+
+/* Rx descriptor structure for 1 buffer mode */
+struct RxD_t {
+	u64 Host_Control;	/* reserved for host */
+	u64 Control_1;
+#define RXD_OWN_XENA            s2BIT(7)
+#define RXD_T_CODE              (s2BIT(12)|s2BIT(13)|s2BIT(14)|s2BIT(15))
+#define RXD_FRAME_PROTO         vBIT(0xFFFF,24,8)
+#define RXD_FRAME_VLAN_TAG      s2BIT(24)
+#define RXD_FRAME_PROTO_IPV4    s2BIT(27)
+#define RXD_FRAME_PROTO_IPV6    s2BIT(28)
+#define RXD_FRAME_IP_FRAG	s2BIT(29)
+#define RXD_FRAME_PROTO_TCP     s2BIT(30)
+#define RXD_FRAME_PROTO_UDP     s2BIT(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;
+#define	THE_RXD_MARK		0x3
+#define	SET_RXD_MARKER		vBIT(THE_RXD_MARK, 0, 2)
+#define	GET_RXD_MARKER(ctrl)	((ctrl & SET_RXD_MARKER) >> 62)
+
+#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)
+
+
+};
+/* Rx descriptor structure for 1 buffer mode */
+struct RxD1 {
+	struct RxD_t h;
+
+#define MASK_BUFFER0_SIZE_1       vBIT(0x3FFF,2,14)
+#define SET_BUFFER0_SIZE_1(val)   vBIT(val,2,14)
+#define RXD_GET_BUFFER0_SIZE_1(_Control_2) \
+	(u16)((_Control_2 & MASK_BUFFER0_SIZE_1) >> 48)
+	u64 Buffer0_ptr;
+};
+/* Rx descriptor structure for 3 or 2 buffer mode */
+
+struct RxD3 {
+	struct RxD_t h;
+
+#define MASK_BUFFER0_SIZE_3       vBIT(0xFF,2,14)
+#define MASK_BUFFER1_SIZE_3       vBIT(0xFFFF,16,16)
+#define MASK_BUFFER2_SIZE_3       vBIT(0xFFFF,32,16)
+#define SET_BUFFER0_SIZE_3(val)   vBIT(val,8,8)
+#define SET_BUFFER1_SIZE_3(val)   vBIT(val,16,16)
+#define SET_BUFFER2_SIZE_3(val)   vBIT(val,32,16)
+#define RXD_GET_BUFFER0_SIZE_3(Control_2) \
+	(u8)((Control_2 & MASK_BUFFER0_SIZE_3) >> 48)
+#define RXD_GET_BUFFER1_SIZE_3(Control_2) \
+	(u16)((Control_2 & MASK_BUFFER1_SIZE_3) >> 32)
+#define RXD_GET_BUFFER2_SIZE_3(Control_2) \
+	(u16)((Control_2 & MASK_BUFFER2_SIZE_3) >> 16)
+#define BUF0_LEN	40
+#define BUF1_LEN	1
+
+	u64 Buffer0_ptr;
+	u64 Buffer1_ptr;
+	u64 Buffer2_ptr;
+};
+
+
+/* Structure that represents the Rx descriptor block which contains
+ * 128 Rx descriptors.
+ */
+struct RxD_block {
+#define MAX_RXDS_PER_BLOCK_1            127
+	struct RxD1 rxd[MAX_RXDS_PER_BLOCK_1];
+
+	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 */
+};
+
+#define SIZE_OF_BLOCK	4096
+
+#define RXD_MODE_1	0 /* One Buffer mode */
+#define RXD_MODE_3B	1 /* Two Buffer mode */
+
+/* Structure to hold virtual addresses of Buf0 and Buf1 in
+ * 2buf mode. */
+struct buffAdd {
+	void *ba_0_org;
+	void *ba_1_org;
+	void *ba_0;
+	void *ba_1;
+};
+
+/* 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.
+ */
+struct rx_curr_get_info {
+	u32 block_index;
+	u32 offset;
+	u32 ring_len;
+};
+
+struct rx_curr_put_info {
+	u32 block_index;
+	u32 offset;
+	u32 ring_len;
+};
+
+/* 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.
+ */
+struct tx_curr_get_info {
+	u32 offset;
+	u32 fifo_len;
+};
+
+struct tx_curr_put_info {
+	u32 offset;
+	u32 fifo_len;
+};
+
+struct rxd_info {
+	void *virt_addr;
+	dma_addr_t dma_addr;
+};
+
+/* Structure that holds the Phy and virt addresses of the Blocks */
+struct rx_block_info {
+	void *block_virt_addr;
+	dma_addr_t block_dma_addr;
+	struct rxd_info *rxds;
+};
+
+/* Data structure to represent a LRO session */
+struct lro {
+	struct sk_buff	*parent;
+	struct sk_buff  *last_frag;
+	u8		*l2h;
+	struct iphdr	*iph;
+	struct tcphdr	*tcph;
+	u32		tcp_next_seq;
+	__be32		tcp_ack;
+	int		total_len;
+	int		frags_len;
+	int		sg_num;
+	int		in_use;
+	__be16		window;
+	u16             vlan_tag;
+	u32		cur_tsval;
+	__be32		cur_tsecr;
+	u8		saw_ts;
+} ____cacheline_aligned;
+
+/* Ring specific structure */
+struct ring_info {
+	/* The ring number */
+	int ring_no;
+
+	/* per-ring buffer counter */
+	u32 rx_bufs_left;
+
+#define MAX_LRO_SESSIONS       32
+	struct lro lro0_n[MAX_LRO_SESSIONS];
+	u8		lro;
+
+	/* copy of sp->rxd_mode flag */
+	int rxd_mode;
+
+	/* Number of rxds per block for the rxd_mode */
+	int rxd_count;
+
+	/* copy of sp pointer */
+	struct s2io_nic *nic;
+
+	/* copy of sp->dev pointer */
+	struct net_device *dev;
+
+	/* copy of sp->pdev pointer */
+	struct pci_dev *pdev;
+
+	/* Per ring napi struct */
+	struct napi_struct napi;
+
+	unsigned long interrupt_count;
+
+	/*
+	 *  Place holders for the virtual and physical addresses of
+	 *  all the Rx Blocks
+	 */
+	struct rx_block_info rx_blocks[MAX_RX_BLOCKS_PER_RING];
+	int block_count;
+	int pkt_cnt;
+
+	/*
+	 * Put pointer info which indictes which RxD has to be replenished
+	 * with a new buffer.
+	 */
+	struct rx_curr_put_info rx_curr_put_info;
+
+	/*
+	 * Get pointer info which indictes which is the last RxD that was
+	 * processed by the driver.
+	 */
+	struct rx_curr_get_info rx_curr_get_info;
+
+	/* interface MTU value */
+        unsigned mtu;
+
+	/* Buffer Address store. */
+	struct buffAdd **ba;
+} ____cacheline_aligned;
+
+/* Fifo specific structure */
+struct fifo_info {
+	/* FIFO number */
+	int fifo_no;
+
+	/* Maximum TxDs per TxDL */
+	int max_txds;
+
+	/* Place holder of all the TX List's Phy and Virt addresses. */
+	struct list_info_hold *list_info;
+
+	/*
+	 * Current offset within the tx FIFO where driver would write
+	 * new Tx frame
+	 */
+	struct tx_curr_put_info tx_curr_put_info;
+
+	/*
+	 * Current offset within tx FIFO from where the driver would start freeing
+	 * the buffers
+	 */
+	struct tx_curr_get_info tx_curr_get_info;
+#define FIFO_QUEUE_START 0
+#define FIFO_QUEUE_STOP 1
+	int queue_state;
+
+	/* copy of sp->dev pointer */
+	struct net_device *dev;
+
+	/* copy of multiq status */
+	u8 multiq;
+
+	/* Per fifo lock */
+	spinlock_t tx_lock;
+
+	/* Per fifo UFO in band structure */
+	u64 *ufo_in_band_v;
+
+	struct s2io_nic *nic;
+} ____cacheline_aligned;
+
+/* Information related to the Tx and Rx FIFOs and Rings of Xena
+ * is maintained in this structure.
+ */
+struct mac_info {
+/* tx side stuff */
+	/* logical pointer of start of each Tx FIFO */
+	struct TxFIFO_element __iomem *tx_FIFO_start[MAX_TX_FIFOS];
+
+	/* Fifo specific structure */
+	struct fifo_info fifos[MAX_TX_FIFOS];
+
+	/* Save virtual address of TxD page with zero DMA addr(if any) */
+	void *zerodma_virt_addr;
+
+/* rx side stuff */
+	/* Ring specific structure */
+	struct ring_info rings[MAX_RX_RINGS];
+
+	u16 rmac_pause_time;
+	u16 mc_pause_threshold_q0q3;
+	u16 mc_pause_threshold_q4q7;
+
+	void *stats_mem;	/* orignal pointer to allocated mem */
+	dma_addr_t stats_mem_phy;	/* Physical address of the stat block */
+	u32 stats_mem_sz;
+	struct stat_block *stats_info;	/* Logical address of the stat block */
+};
+
+/* Default Tunable parameters of the NIC. */
+#define DEFAULT_FIFO_0_LEN 4096
+#define DEFAULT_FIFO_1_7_LEN 512
+#define SMALL_BLK_CNT	30
+#define LARGE_BLK_CNT	100
+
+/*
+ * Structure to keep track of the MSI-X vectors and the corresponding
+ * argument registered against each vector
+ */
+#define MAX_REQUESTED_MSI_X	9
+struct s2io_msix_entry
+{
+	u16 vector;
+	u16 entry;
+	void *arg;
+
+	u8 type;
+#define        MSIX_ALARM_TYPE         1
+#define        MSIX_RING_TYPE          2
+
+	u8 in_use;
+#define MSIX_REGISTERED_SUCCESS	0xAA
+};
+
+struct msix_info_st {
+	u64 addr;
+	u64 data;
+};
+
+/* These flags represent the devices temporary state */
+enum s2io_device_state_t
+{
+	__S2IO_STATE_LINK_TASK=0,
+	__S2IO_STATE_CARD_UP
+};
+
+/* Structure representing one instance of the NIC */
+struct s2io_nic {
+	int rxd_mode;
+	/*
+	 * Count of packets to be processed in a given iteration, it will be indicated
+	 * by the quota field of the device structure when NAPI is enabled.
+	 */
+	int pkts_to_process;
+	struct net_device *dev;
+	struct mac_info mac_control;
+	struct config_param config;
+	struct pci_dev *pdev;
+	void __iomem *bar0;
+	void __iomem *bar1;
+#define MAX_MAC_SUPPORTED   16
+#define MAX_SUPPORTED_MULTICASTS MAX_MAC_SUPPORTED
+
+	struct mac_addr def_mac_addr[256];
+
+	struct net_device_stats stats;
+	int high_dma_flag;
+	int device_enabled_once;
+
+	char name[60];
+
+	/* Timer that handles I/O errors/exceptions */
+	struct timer_list alarm_timer;
+
+	/* Space to back up the PCI config space */
+	u32 config_space[256 / sizeof(u32)];
+
+#define PROMISC     1
+#define ALL_MULTI   2
+
+#define MAX_ADDRS_SUPPORTED 64
+	u16 mc_addr_count;
+
+	u16 m_cast_flg;
+	u16 all_multi_pos;
+	u16 promisc_flg;
+
+	/*  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.
+	 */
+	struct work_struct rst_timer_task;
+	struct work_struct set_link_task;
+
+	/* Flag that can be used to turn on or turn off the Rx checksum
+	 * offload feature.
+	 */
+	int rx_csum;
+
+	/* Below variables are used for fifo selection to transmit a packet */
+	u16 fifo_selector[MAX_TX_FIFOS];
+
+	/* Total fifos for tcp packets */
+	u8 total_tcp_fifos;
+
+	/*
+	* Beginning index of udp for udp packets
+	* Value will be equal to
+	* (tx_fifo_num - FIFO_UDP_MAX_NUM - FIFO_OTHER_MAX_NUM)
+	*/
+	u8 udp_fifo_idx;
+
+	u8 total_udp_fifos;
+
+	/*
+	 * Beginning index of fifo for all other packets
+	 * Value will be equal to (tx_fifo_num - FIFO_OTHER_MAX_NUM)
+	*/
+	u8 other_fifo_idx;
+
+	struct napi_struct napi;
+	/*  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
+
+	int task_flag;
+	unsigned long long start_time;
+	int vlan_strip_flag;
+#define MSIX_FLG                0xA5
+	int num_entries;
+	struct msix_entry *entries;
+	int msi_detected;
+	wait_queue_head_t msi_wait;
+	struct s2io_msix_entry *s2io_entries;
+	char desc[MAX_REQUESTED_MSI_X][25];
+
+	int avail_msix_vectors; /* No. of MSI-X vectors granted by system */
+
+	struct msix_info_st msix_info[0x3f];
+
+#define XFRAME_I_DEVICE		1
+#define XFRAME_II_DEVICE	2
+	u8 device_type;
+
+	unsigned long	clubbed_frms_cnt;
+	unsigned long	sending_both;
+	u16		lro_max_aggr_per_sess;
+	volatile unsigned long state;
+	u64		general_int_mask;
+
+#define VPD_STRING_LEN 80
+	u8  product_name[VPD_STRING_LEN];
+	u8  serial_num[VPD_STRING_LEN];
+};
+
+#define RESET_ERROR 1
+#define CMD_ERROR   2
+
+/*  OS related system calls */
+#ifndef readq
+static inline u64 readq(void __iomem *addr)
+{
+	u64 ret = 0;
+	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));
+}
+#endif
+
+/*
+ * 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);
+		(void) readl(addr);
+		writel((u32) (val >> 32), (addr + 4));
+		(void) readl(addr + 4);
+	} else {
+		writel((u32) (val >> 32), (addr + 4));
+		(void) readl(addr + 4);
+		writel((u32) (val), addr);
+		(void) readl(addr);
+	}
+}
+
+/*  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         s2BIT(0)
+#define TXDMA_INT_M         s2BIT(1)
+#define TXMAC_INT_M         s2BIT(2)
+#define TXXGXS_INT_M        s2BIT(3)
+#define TXTRAFFIC_INT_M     s2BIT(8)
+#define PIC_RX_INT_M        s2BIT(32)
+#define RXDMA_INT_M         s2BIT(33)
+#define RXMAC_INT_M         s2BIT(34)
+#define MC_INT_M            s2BIT(35)
+#define RXXGXS_INT_M        s2BIT(36)
+#define RXTRAFFIC_INT_M     s2BIT(40)
+
+/*  PIC level Interrupts TODO*/
+
+/*  DMA level Inressupts */
+#define TXDMA_PFC_INT_M     s2BIT(0)
+#define TXDMA_PCC_INT_M     s2BIT(2)
+
+/*  PFC block interrupts */
+#define PFC_MISC_ERR_1      s2BIT(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. */
+
+#define RXD_GET_VLAN_TAG(Control_2) (u16)(Control_2 & MASK_VLAN_TAG)
+/*
+ * Prototype declaration.
+ */
+static int s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre);
+static void 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);
+static int rx_intr_handler(struct ring_info *ring_data, int budget);
+static void s2io_txpic_intr_handle(struct s2io_nic *sp);
+static void tx_intr_handler(struct fifo_info *fifo_data);
+static void s2io_handle_errors(void * dev_id);
+
+static void s2io_tx_watchdog(struct net_device *dev);
+static void s2io_set_multicast(struct net_device *dev);
+static int rx_osm_handler(struct ring_info *ring_data, struct RxD_t * rxdp);
+static void s2io_link(struct s2io_nic * sp, int link);
+static void s2io_reset(struct s2io_nic * sp);
+static int s2io_poll_msix(struct napi_struct *napi, int budget);
+static int s2io_poll_inta(struct napi_struct *napi, int budget);
+static void s2io_init_pci(struct s2io_nic * sp);
+static int do_s2io_prog_unicast(struct net_device *dev, u8 *addr);
+static void s2io_alarm_handle(struct timer_list *t);
+static irqreturn_t
+s2io_msix_ring_handle(int irq, void *dev_id);
+static irqreturn_t
+s2io_msix_fifo_handle(int irq, void *dev_id);
+static irqreturn_t s2io_isr(int irq, void *dev_id);
+static int verify_xena_quiescence(struct s2io_nic *sp);
+static const struct ethtool_ops netdev_ethtool_ops;
+static void s2io_set_link(struct work_struct *work);
+static int s2io_set_swapper(struct s2io_nic * sp);
+static void s2io_card_down(struct s2io_nic *nic);
+static int s2io_card_up(struct s2io_nic *nic);
+static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
+					int bit_state);
+static int s2io_add_isr(struct s2io_nic * sp);
+static void s2io_rem_isr(struct s2io_nic * sp);
+
+static void restore_xmsi_data(struct s2io_nic *nic);
+static void do_s2io_store_unicast_mc(struct s2io_nic *sp);
+static void do_s2io_restore_unicast_mc(struct s2io_nic *sp);
+static u64 do_s2io_read_unicast_mc(struct s2io_nic *sp, int offset);
+static int do_s2io_add_mc(struct s2io_nic *sp, u8 *addr);
+static int do_s2io_add_mac(struct s2io_nic *sp, u64 addr, int offset);
+static int do_s2io_delete_unicast_mc(struct s2io_nic *sp, u64 addr);
+
+static int s2io_club_tcp_session(struct ring_info *ring_data, u8 *buffer,
+	u8 **tcp, u32 *tcp_len, struct lro **lro, struct RxD_t *rxdp,
+	struct s2io_nic *sp);
+static void clear_lro_session(struct lro *lro);
+static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag);
+static void update_L3L4_header(struct s2io_nic *sp, struct lro *lro);
+static void lro_append_pkt(struct s2io_nic *sp, struct lro *lro,
+			   struct sk_buff *skb, u32 tcp_len);
+static int rts_ds_steer(struct s2io_nic *nic, u8 ds_codepoint, u8 ring);
+
+static pci_ers_result_t s2io_io_error_detected(struct pci_dev *pdev,
+			                      pci_channel_state_t state);
+static pci_ers_result_t s2io_io_slot_reset(struct pci_dev *pdev);
+static void s2io_io_resume(struct pci_dev *pdev);
+
+#define s2io_tcp_mss(skb) skb_shinfo(skb)->gso_size
+#define s2io_udp_mss(skb) skb_shinfo(skb)->gso_size
+#define s2io_offload_type(skb) skb_shinfo(skb)->gso_type
+
+#define S2IO_PARM_INT(X, def_val) \
+	static unsigned int X = def_val;\
+		module_param(X , uint, 0);
+
+#endif				/* _S2IO_H */