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linux/drivers/net/s2io.h
Sreenivasa Honnur 01e16faa06 S2io: Enable msi-x link interrupts. 
- Enable msi-x link interrupts because the timer based scheduler was getting
cancelled causing the link state to be lost with repetitive card up/downs
when changing the mtu.
- Unmask mac_rmac_link interrupts only for Xframe I and prevent a spurious
link interrupt in Xframe II.
- Stop the tx queue and indicate link down when card is down

Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:40 -04:00

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/************************************************************************
* s2io.h: A Linux PCI-X Ethernet driver for Neterion 10GbE Server NIC
* Copyright(c) 2002-2007 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 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)
#ifndef BOOL
#define BOOL int
#endif
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#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, 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
/* 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 * 127 )
#define MAX_RX_DESC_2 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
#define MAX_RX_DESC_3 (MAX_RX_RINGS * MAX_RX_BLOCKS_PER_RING * 85 )
#define MAX_TX_DESC (MAX_AVAILABLE_TXDS)
/* FIFO mappings for all possible number of fifos configured */
static 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 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 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
};
/* 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;
/* per-Ring statistics */
unsigned long rx_packets;
unsigned long rx_bytes;
} ____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 */
};
/* structure representing the user defined MAC addresses */
struct usr_addr {
char addr[ETH_ALEN];
int usage_cnt;
};
/* 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 usr_addr_count;
u16 mc_addr_count;
struct usr_addr usr_addrs[256];
u16 m_cast_flg;
u16 all_multi_pos;
u16 promisc_flg;
/* 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.
*/
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;
struct vlan_group *vlgrp;
#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;
u8 lro;
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)
{
u32 ret;
if (order == LF) {
writel((u32) (val), addr);
ret = readl(addr);
writel((u32) (val >> 32), (addr + 4));
ret = readl(addr + 4);
} else {
writel((u32) (val >> 32), (addr + 4));
ret = readl(addr + 4);
writel((u32) (val), addr);
ret = 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 __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);
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 int s2io_starter(void);
static void s2io_closer(void);
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(unsigned long data);
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 */
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