Merge git://git.kvack.org/~bcrl/aio-fixes

[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / chelsio / cxgb4 / cxgb4.h

/*
 * This file is part of the Chelsio T4 Ethernet driver for Linux.
 *
 * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef __CXGB4_H__
#define __CXGB4_H__

#include "t4_hw.h"

#include <linux/bitops.h>
#include <linux/cache.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/vmalloc.h>
#include <asm/io.h>
#include "cxgb4_uld.h"

#define T4FW_VERSION_MAJOR 0x01
#define T4FW_VERSION_MINOR 0x0B
#define T4FW_VERSION_MICRO 0x1B
#define T4FW_VERSION_BUILD 0x00

#define T5FW_VERSION_MAJOR 0x01
#define T5FW_VERSION_MINOR 0x0B
#define T5FW_VERSION_MICRO 0x1B
#define T5FW_VERSION_BUILD 0x00

#define CH_WARN(adap, fmt, ...) dev_warn(adap->pdev_dev, fmt, ## __VA_ARGS__)

enum {
        MAX_NPORTS = 4,     /* max # of ports */
        SERNUM_LEN = 24,    /* Serial # length */
        EC_LEN     = 16,    /* E/C length */
        ID_LEN     = 16,    /* ID length */
        PN_LEN     = 16,    /* Part Number length */
};

enum {
        MEM_EDC0,
        MEM_EDC1,
        MEM_MC,
        MEM_MC0 = MEM_MC,
        MEM_MC1
};

enum {
        MEMWIN0_APERTURE = 2048,
        MEMWIN0_BASE     = 0x1b800,
        MEMWIN1_APERTURE = 32768,
        MEMWIN1_BASE     = 0x28000,
        MEMWIN1_BASE_T5  = 0x52000,
        MEMWIN2_APERTURE = 65536,
        MEMWIN2_BASE     = 0x30000,
        MEMWIN2_APERTURE_T5 = 131072,
        MEMWIN2_BASE_T5  = 0x60000,
};

enum dev_master {
        MASTER_CANT,
        MASTER_MAY,
        MASTER_MUST
};

enum dev_state {
        DEV_STATE_UNINIT,
        DEV_STATE_INIT,
        DEV_STATE_ERR
};

enum {
        PAUSE_RX      = 1 << 0,
        PAUSE_TX      = 1 << 1,
        PAUSE_AUTONEG = 1 << 2
};

struct port_stats {
        u64 tx_octets;            /* total # of octets in good frames */
        u64 tx_frames;            /* all good frames */
        u64 tx_bcast_frames;      /* all broadcast frames */
        u64 tx_mcast_frames;      /* all multicast frames */
        u64 tx_ucast_frames;      /* all unicast frames */
        u64 tx_error_frames;      /* all error frames */

        u64 tx_frames_64;         /* # of Tx frames in a particular range */
        u64 tx_frames_65_127;
        u64 tx_frames_128_255;
        u64 tx_frames_256_511;
        u64 tx_frames_512_1023;
        u64 tx_frames_1024_1518;
        u64 tx_frames_1519_max;

        u64 tx_drop;              /* # of dropped Tx frames */
        u64 tx_pause;             /* # of transmitted pause frames */
        u64 tx_ppp0;              /* # of transmitted PPP prio 0 frames */
        u64 tx_ppp1;              /* # of transmitted PPP prio 1 frames */
        u64 tx_ppp2;              /* # of transmitted PPP prio 2 frames */
        u64 tx_ppp3;              /* # of transmitted PPP prio 3 frames */
        u64 tx_ppp4;              /* # of transmitted PPP prio 4 frames */
        u64 tx_ppp5;              /* # of transmitted PPP prio 5 frames */
        u64 tx_ppp6;              /* # of transmitted PPP prio 6 frames */
        u64 tx_ppp7;              /* # of transmitted PPP prio 7 frames */

        u64 rx_octets;            /* total # of octets in good frames */
        u64 rx_frames;            /* all good frames */
        u64 rx_bcast_frames;      /* all broadcast frames */
        u64 rx_mcast_frames;      /* all multicast frames */
        u64 rx_ucast_frames;      /* all unicast frames */
        u64 rx_too_long;          /* # of frames exceeding MTU */
        u64 rx_jabber;            /* # of jabber frames */
        u64 rx_fcs_err;           /* # of received frames with bad FCS */
        u64 rx_len_err;           /* # of received frames with length error */
        u64 rx_symbol_err;        /* symbol errors */
        u64 rx_runt;              /* # of short frames */

        u64 rx_frames_64;         /* # of Rx frames in a particular range */
        u64 rx_frames_65_127;
        u64 rx_frames_128_255;
        u64 rx_frames_256_511;
        u64 rx_frames_512_1023;
        u64 rx_frames_1024_1518;
        u64 rx_frames_1519_max;

        u64 rx_pause;             /* # of received pause frames */
        u64 rx_ppp0;              /* # of received PPP prio 0 frames */
        u64 rx_ppp1;              /* # of received PPP prio 1 frames */
        u64 rx_ppp2;              /* # of received PPP prio 2 frames */
        u64 rx_ppp3;              /* # of received PPP prio 3 frames */
        u64 rx_ppp4;              /* # of received PPP prio 4 frames */
        u64 rx_ppp5;              /* # of received PPP prio 5 frames */
        u64 rx_ppp6;              /* # of received PPP prio 6 frames */
        u64 rx_ppp7;              /* # of received PPP prio 7 frames */

        u64 rx_ovflow0;           /* drops due to buffer-group 0 overflows */
        u64 rx_ovflow1;           /* drops due to buffer-group 1 overflows */
        u64 rx_ovflow2;           /* drops due to buffer-group 2 overflows */
        u64 rx_ovflow3;           /* drops due to buffer-group 3 overflows */
        u64 rx_trunc0;            /* buffer-group 0 truncated packets */
        u64 rx_trunc1;            /* buffer-group 1 truncated packets */
        u64 rx_trunc2;            /* buffer-group 2 truncated packets */
        u64 rx_trunc3;            /* buffer-group 3 truncated packets */
};

struct lb_port_stats {
        u64 octets;
        u64 frames;
        u64 bcast_frames;
        u64 mcast_frames;
        u64 ucast_frames;
        u64 error_frames;

        u64 frames_64;
        u64 frames_65_127;
        u64 frames_128_255;
        u64 frames_256_511;
        u64 frames_512_1023;
        u64 frames_1024_1518;
        u64 frames_1519_max;

        u64 drop;

        u64 ovflow0;
        u64 ovflow1;
        u64 ovflow2;
        u64 ovflow3;
        u64 trunc0;
        u64 trunc1;
        u64 trunc2;
        u64 trunc3;
};

struct tp_tcp_stats {
        u32 tcpOutRsts;
        u64 tcpInSegs;
        u64 tcpOutSegs;
        u64 tcpRetransSegs;
};

struct tp_err_stats {
        u32 macInErrs[4];
        u32 hdrInErrs[4];
        u32 tcpInErrs[4];
        u32 tnlCongDrops[4];
        u32 ofldChanDrops[4];
        u32 tnlTxDrops[4];
        u32 ofldVlanDrops[4];
        u32 tcp6InErrs[4];
        u32 ofldNoNeigh;
        u32 ofldCongDefer;
};

struct tp_params {
        unsigned int ntxchan;        /* # of Tx channels */
        unsigned int tre;            /* log2 of core clocks per TP tick */
        unsigned short tx_modq_map;  /* TX modulation scheduler queue to */
                                     /* channel map */

        uint32_t dack_re;            /* DACK timer resolution */
        unsigned short tx_modq[NCHAN];  /* channel to modulation queue map */

        u32 vlan_pri_map;               /* cached TP_VLAN_PRI_MAP */
        u32 ingress_config;             /* cached TP_INGRESS_CONFIG */

        /* TP_VLAN_PRI_MAP Compressed Filter Tuple field offsets.  This is a
         * subset of the set of fields which may be present in the Compressed
         * Filter Tuple portion of filters and TCP TCB connections.  The
         * fields which are present are controlled by the TP_VLAN_PRI_MAP.
         * Since a variable number of fields may or may not be present, their
         * shifted field positions within the Compressed Filter Tuple may
         * vary, or not even be present if the field isn't selected in
         * TP_VLAN_PRI_MAP.  Since some of these fields are needed in various
         * places we store their offsets here, or a -1 if the field isn't
         * present.
         */
        int vlan_shift;
        int vnic_shift;
        int port_shift;
        int protocol_shift;
};

struct vpd_params {
        unsigned int cclk;
        u8 ec[EC_LEN + 1];
        u8 sn[SERNUM_LEN + 1];
        u8 id[ID_LEN + 1];
        u8 pn[PN_LEN + 1];
};

struct pci_params {
        unsigned char speed;
        unsigned char width;
};

#define CHELSIO_CHIP_CODE(version, revision) (((version) << 4) | (revision))
#define CHELSIO_CHIP_FPGA          0x100
#define CHELSIO_CHIP_VERSION(code) (((code) >> 4) & 0xf)
#define CHELSIO_CHIP_RELEASE(code) ((code) & 0xf)

#define CHELSIO_T4              0x4
#define CHELSIO_T5              0x5

enum chip_type {
        T4_A1 = CHELSIO_CHIP_CODE(CHELSIO_T4, 1),
        T4_A2 = CHELSIO_CHIP_CODE(CHELSIO_T4, 2),
        T4_FIRST_REV    = T4_A1,
        T4_LAST_REV     = T4_A2,

        T5_A0 = CHELSIO_CHIP_CODE(CHELSIO_T5, 0),
        T5_A1 = CHELSIO_CHIP_CODE(CHELSIO_T5, 1),
        T5_FIRST_REV    = T5_A0,
        T5_LAST_REV     = T5_A1,
};

struct adapter_params {
        struct tp_params  tp;
        struct vpd_params vpd;
        struct pci_params pci;

        unsigned int sf_size;             /* serial flash size in bytes */
        unsigned int sf_nsec;             /* # of flash sectors */
        unsigned int sf_fw_start;         /* start of FW image in flash */

        unsigned int fw_vers;
        unsigned int tp_vers;
        u8 api_vers[7];

        unsigned short mtus[NMTUS];
        unsigned short a_wnd[NCCTRL_WIN];
        unsigned short b_wnd[NCCTRL_WIN];

        unsigned char nports;             /* # of ethernet ports */
        unsigned char portvec;
        enum chip_type chip;               /* chip code */
        unsigned char offload;

        unsigned char bypass;

        unsigned int ofldq_wr_cred;
        bool ulptx_memwrite_dsgl;          /* use of T5 DSGL allowed */

        unsigned int max_ordird_qp;       /* Max read depth per RDMA QP */
        unsigned int max_ird_adapter;     /* Max read depth per adapter */
};

#include "t4fw_api.h"

#define FW_VERSION(chip) ( \
                FW_HDR_FW_VER_MAJOR_GET(chip##FW_VERSION_MAJOR) | \
                FW_HDR_FW_VER_MINOR_GET(chip##FW_VERSION_MINOR) | \
                FW_HDR_FW_VER_MICRO_GET(chip##FW_VERSION_MICRO) | \
                FW_HDR_FW_VER_BUILD_GET(chip##FW_VERSION_BUILD))
#define FW_INTFVER(chip, intf) (FW_HDR_INTFVER_##intf)

struct fw_info {
        u8 chip;
        char *fs_name;
        char *fw_mod_name;
        struct fw_hdr fw_hdr;
};


struct trace_params {
        u32 data[TRACE_LEN / 4];
        u32 mask[TRACE_LEN / 4];
        unsigned short snap_len;
        unsigned short min_len;
        unsigned char skip_ofst;
        unsigned char skip_len;
        unsigned char invert;
        unsigned char port;
};

struct link_config {
        unsigned short supported;        /* link capabilities */
        unsigned short advertising;      /* advertised capabilities */
        unsigned short requested_speed;  /* speed user has requested */
        unsigned short speed;            /* actual link speed */
        unsigned char  requested_fc;     /* flow control user has requested */
        unsigned char  fc;               /* actual link flow control */
        unsigned char  autoneg;          /* autonegotiating? */
        unsigned char  link_ok;          /* link up? */
};

#define FW_LEN16(fw_struct) FW_CMD_LEN16(sizeof(fw_struct) / 16)

enum {
        MAX_ETH_QSETS = 32,           /* # of Ethernet Tx/Rx queue sets */
        MAX_OFLD_QSETS = 16,          /* # of offload Tx/Rx queue sets */
        MAX_CTRL_QUEUES = NCHAN,      /* # of control Tx queues */
        MAX_RDMA_QUEUES = NCHAN,      /* # of streaming RDMA Rx queues */
        MAX_RDMA_CIQS = NCHAN,        /* # of  RDMA concentrator IQs */
        MAX_ISCSI_QUEUES = NCHAN,     /* # of streaming iSCSI Rx queues */
};

enum {
        INGQ_EXTRAS = 2,        /* firmware event queue and */
                                /*   forwarded interrupts */
        MAX_EGRQ = MAX_ETH_QSETS*2 + MAX_OFLD_QSETS*2
                   + MAX_CTRL_QUEUES + MAX_RDMA_QUEUES + MAX_ISCSI_QUEUES,
        MAX_INGQ = MAX_ETH_QSETS + MAX_OFLD_QSETS + MAX_RDMA_QUEUES
                   + MAX_RDMA_CIQS + MAX_ISCSI_QUEUES + INGQ_EXTRAS,
};

struct adapter;
struct sge_rspq;

#include "cxgb4_dcb.h"

struct port_info {
        struct adapter *adapter;
        u16    viid;
        s16    xact_addr_filt;        /* index of exact MAC address filter */
        u16    rss_size;              /* size of VI's RSS table slice */
        s8     mdio_addr;
        u8     port_type;
        u8     mod_type;
        u8     port_id;
        u8     tx_chan;
        u8     lport;                 /* associated offload logical port */
        u8     nqsets;                /* # of qsets */
        u8     first_qset;            /* index of first qset */
        u8     rss_mode;
        struct link_config link_cfg;
        u16   *rss;
#ifdef CONFIG_CHELSIO_T4_DCB
        struct port_dcb_info dcb;     /* Data Center Bridging support */
#endif
};

struct dentry;
struct work_struct;

enum {                                 /* adapter flags */
        FULL_INIT_DONE     = (1 << 0),
        DEV_ENABLED        = (1 << 1),
        USING_MSI          = (1 << 2),
        USING_MSIX         = (1 << 3),
        FW_OK              = (1 << 4),
        RSS_TNLALLLOOKUP   = (1 << 5),
        USING_SOFT_PARAMS  = (1 << 6),
        MASTER_PF          = (1 << 7),
        FW_OFLD_CONN       = (1 << 9),
};

struct rx_sw_desc;

struct sge_fl {                     /* SGE free-buffer queue state */
        unsigned int avail;         /* # of available Rx buffers */
        unsigned int pend_cred;     /* new buffers since last FL DB ring */
        unsigned int cidx;          /* consumer index */
        unsigned int pidx;          /* producer index */
        unsigned long alloc_failed; /* # of times buffer allocation failed */
        unsigned long large_alloc_failed;
        unsigned long starving;
        /* RO fields */
        unsigned int cntxt_id;      /* SGE context id for the free list */
        unsigned int size;          /* capacity of free list */
        struct rx_sw_desc *sdesc;   /* address of SW Rx descriptor ring */
        __be64 *desc;               /* address of HW Rx descriptor ring */
        dma_addr_t addr;            /* bus address of HW ring start */
        u64 udb;                    /* BAR2 offset of User Doorbell area */
};

/* A packet gather list */
struct pkt_gl {
        struct page_frag frags[MAX_SKB_FRAGS];
        void *va;                         /* virtual address of first byte */
        unsigned int nfrags;              /* # of fragments */
        unsigned int tot_len;             /* total length of fragments */
};

typedef int (*rspq_handler_t)(struct sge_rspq *q, const __be64 *rsp,
                              const struct pkt_gl *gl);

struct sge_rspq {                   /* state for an SGE response queue */
        struct napi_struct napi;
        const __be64 *cur_desc;     /* current descriptor in queue */
        unsigned int cidx;          /* consumer index */
        u8 gen;                     /* current generation bit */
        u8 intr_params;             /* interrupt holdoff parameters */
        u8 next_intr_params;        /* holdoff params for next interrupt */
        u8 adaptive_rx;
        u8 pktcnt_idx;              /* interrupt packet threshold */
        u8 uld;                     /* ULD handling this queue */
        u8 idx;                     /* queue index within its group */
        int offset;                 /* offset into current Rx buffer */
        u16 cntxt_id;               /* SGE context id for the response q */
        u16 abs_id;                 /* absolute SGE id for the response q */
        __be64 *desc;               /* address of HW response ring */
        dma_addr_t phys_addr;       /* physical address of the ring */
        u64 udb;                    /* BAR2 offset of User Doorbell area */
        unsigned int iqe_len;       /* entry size */
        unsigned int size;          /* capacity of response queue */
        struct adapter *adap;
        struct net_device *netdev;  /* associated net device */
        rspq_handler_t handler;
};

struct sge_eth_stats {              /* Ethernet queue statistics */
        unsigned long pkts;         /* # of ethernet packets */
        unsigned long lro_pkts;     /* # of LRO super packets */
        unsigned long lro_merged;   /* # of wire packets merged by LRO */
        unsigned long rx_cso;       /* # of Rx checksum offloads */
        unsigned long vlan_ex;      /* # of Rx VLAN extractions */
        unsigned long rx_drops;     /* # of packets dropped due to no mem */
};

struct sge_eth_rxq {                /* SW Ethernet Rx queue */
        struct sge_rspq rspq;
        struct sge_fl fl;
        struct sge_eth_stats stats;
} ____cacheline_aligned_in_smp;

struct sge_ofld_stats {             /* offload queue statistics */
        unsigned long pkts;         /* # of packets */
        unsigned long imm;          /* # of immediate-data packets */
        unsigned long an;           /* # of asynchronous notifications */
        unsigned long nomem;        /* # of responses deferred due to no mem */
};

struct sge_ofld_rxq {               /* SW offload Rx queue */
        struct sge_rspq rspq;
        struct sge_fl fl;
        struct sge_ofld_stats stats;
} ____cacheline_aligned_in_smp;

struct tx_desc {
        __be64 flit[8];
};

struct tx_sw_desc;

struct sge_txq {
        unsigned int  in_use;       /* # of in-use Tx descriptors */
        unsigned int  size;         /* # of descriptors */
        unsigned int  cidx;         /* SW consumer index */
        unsigned int  pidx;         /* producer index */
        unsigned long stops;        /* # of times q has been stopped */
        unsigned long restarts;     /* # of queue restarts */
        unsigned int  cntxt_id;     /* SGE context id for the Tx q */
        struct tx_desc *desc;       /* address of HW Tx descriptor ring */
        struct tx_sw_desc *sdesc;   /* address of SW Tx descriptor ring */
        struct sge_qstat *stat;     /* queue status entry */
        dma_addr_t    phys_addr;    /* physical address of the ring */
        spinlock_t db_lock;
        int db_disabled;
        unsigned short db_pidx;
        unsigned short db_pidx_inc;
        u64 udb;                    /* BAR2 offset of User Doorbell area */
};

struct sge_eth_txq {                /* state for an SGE Ethernet Tx queue */
        struct sge_txq q;
        struct netdev_queue *txq;   /* associated netdev TX queue */
#ifdef CONFIG_CHELSIO_T4_DCB
        u8 dcb_prio;                /* DCB Priority bound to queue */
#endif
        unsigned long tso;          /* # of TSO requests */
        unsigned long tx_cso;       /* # of Tx checksum offloads */
        unsigned long vlan_ins;     /* # of Tx VLAN insertions */
        unsigned long mapping_err;  /* # of I/O MMU packet mapping errors */
} ____cacheline_aligned_in_smp;

struct sge_ofld_txq {               /* state for an SGE offload Tx queue */
        struct sge_txq q;
        struct adapter *adap;
        struct sk_buff_head sendq;  /* list of backpressured packets */
        struct tasklet_struct qresume_tsk; /* restarts the queue */
        u8 full;                    /* the Tx ring is full */
        unsigned long mapping_err;  /* # of I/O MMU packet mapping errors */
} ____cacheline_aligned_in_smp;

struct sge_ctrl_txq {               /* state for an SGE control Tx queue */
        struct sge_txq q;
        struct adapter *adap;
        struct sk_buff_head sendq;  /* list of backpressured packets */
        struct tasklet_struct qresume_tsk; /* restarts the queue */
        u8 full;                    /* the Tx ring is full */
} ____cacheline_aligned_in_smp;

struct sge {
        struct sge_eth_txq ethtxq[MAX_ETH_QSETS];
        struct sge_ofld_txq ofldtxq[MAX_OFLD_QSETS];
        struct sge_ctrl_txq ctrlq[MAX_CTRL_QUEUES];

        struct sge_eth_rxq ethrxq[MAX_ETH_QSETS];
        struct sge_ofld_rxq ofldrxq[MAX_OFLD_QSETS];
        struct sge_ofld_rxq rdmarxq[MAX_RDMA_QUEUES];
        struct sge_ofld_rxq rdmaciq[MAX_RDMA_CIQS];
        struct sge_rspq fw_evtq ____cacheline_aligned_in_smp;

        struct sge_rspq intrq ____cacheline_aligned_in_smp;
        spinlock_t intrq_lock;

        u16 max_ethqsets;           /* # of available Ethernet queue sets */
        u16 ethqsets;               /* # of active Ethernet queue sets */
        u16 ethtxq_rover;           /* Tx queue to clean up next */
        u16 ofldqsets;              /* # of active offload queue sets */
        u16 rdmaqs;                 /* # of available RDMA Rx queues */
        u16 rdmaciqs;               /* # of available RDMA concentrator IQs */
        u16 ofld_rxq[MAX_OFLD_QSETS];
        u16 rdma_rxq[NCHAN];
        u16 rdma_ciq[NCHAN];
        u16 timer_val[SGE_NTIMERS];
        u8 counter_val[SGE_NCOUNTERS];
        u32 fl_pg_order;            /* large page allocation size */
        u32 stat_len;               /* length of status page at ring end */
        u32 pktshift;               /* padding between CPL & packet data */
        u32 fl_align;               /* response queue message alignment */
        u32 fl_starve_thres;        /* Free List starvation threshold */

        /* State variables for detecting an SGE Ingress DMA hang */
        unsigned int idma_1s_thresh;/* SGE same State Counter 1s threshold */
        unsigned int idma_stalled[2];/* SGE synthesized stalled timers in HZ */
        unsigned int idma_state[2]; /* SGE IDMA Hang detect state */
        unsigned int idma_qid[2];   /* SGE IDMA Hung Ingress Queue ID */

        unsigned int egr_start;
        unsigned int ingr_start;
        void *egr_map[MAX_EGRQ];    /* qid->queue egress queue map */
        struct sge_rspq *ingr_map[MAX_INGQ]; /* qid->queue ingress queue map */
        DECLARE_BITMAP(starving_fl, MAX_EGRQ);
        DECLARE_BITMAP(txq_maperr, MAX_EGRQ);
        struct timer_list rx_timer; /* refills starving FLs */
        struct timer_list tx_timer; /* checks Tx queues */
};

#define for_each_ethrxq(sge, i) for (i = 0; i < (sge)->ethqsets; i++)
#define for_each_ofldrxq(sge, i) for (i = 0; i < (sge)->ofldqsets; i++)
#define for_each_rdmarxq(sge, i) for (i = 0; i < (sge)->rdmaqs; i++)
#define for_each_rdmaciq(sge, i) for (i = 0; i < (sge)->rdmaciqs; i++)

struct l2t_data;

#ifdef CONFIG_PCI_IOV

/* T4 supports SRIOV on PF0-3 and T5 on PF0-7.  However, the Serial
 * Configuration initialization for T5 only has SR-IOV functionality enabled
 * on PF0-3 in order to simplify everything.
 */
#define NUM_OF_PF_WITH_SRIOV 4

#endif

struct adapter {
        void __iomem *regs;
        void __iomem *bar2;
        u32 t4_bar0;
        struct pci_dev *pdev;
        struct device *pdev_dev;
        unsigned int mbox;
        unsigned int fn;
        unsigned int flags;
        enum chip_type chip;

        int msg_enable;

        struct adapter_params params;
        struct cxgb4_virt_res vres;
        unsigned int swintr;

        unsigned int wol;

        struct {
                unsigned short vec;
                char desc[IFNAMSIZ + 10];
        } msix_info[MAX_INGQ + 1];

        struct sge sge;

        struct net_device *port[MAX_NPORTS];
        u8 chan_map[NCHAN];                   /* channel -> port map */

        u32 filter_mode;
        unsigned int l2t_start;
        unsigned int l2t_end;
        struct l2t_data *l2t;
        void *uld_handle[CXGB4_ULD_MAX];
        struct list_head list_node;
        struct list_head rcu_node;

        struct tid_info tids;
        void **tid_release_head;
        spinlock_t tid_release_lock;
        struct workqueue_struct *workq;
        struct work_struct tid_release_task;
        struct work_struct db_full_task;
        struct work_struct db_drop_task;
        bool tid_release_task_busy;

        struct dentry *debugfs_root;

        spinlock_t stats_lock;
        spinlock_t win0_lock ____cacheline_aligned_in_smp;
};

/* Defined bit width of user definable filter tuples
 */
#define ETHTYPE_BITWIDTH 16
#define FRAG_BITWIDTH 1
#define MACIDX_BITWIDTH 9
#define FCOE_BITWIDTH 1
#define IPORT_BITWIDTH 3
#define MATCHTYPE_BITWIDTH 3
#define PROTO_BITWIDTH 8
#define TOS_BITWIDTH 8
#define PF_BITWIDTH 8
#define VF_BITWIDTH 8
#define IVLAN_BITWIDTH 16
#define OVLAN_BITWIDTH 16

/* Filter matching rules.  These consist of a set of ingress packet field
 * (value, mask) tuples.  The associated ingress packet field matches the
 * tuple when ((field & mask) == value).  (Thus a wildcard "don't care" field
 * rule can be constructed by specifying a tuple of (0, 0).)  A filter rule
 * matches an ingress packet when all of the individual individual field
 * matching rules are true.
 *
 * Partial field masks are always valid, however, while it may be easy to
 * understand their meanings for some fields (e.g. IP address to match a
 * subnet), for others making sensible partial masks is less intuitive (e.g.
 * MPS match type) ...
 *
 * Most of the following data structures are modeled on T4 capabilities.
 * Drivers for earlier chips use the subsets which make sense for those chips.
 * We really need to come up with a hardware-independent mechanism to
 * represent hardware filter capabilities ...
 */
struct ch_filter_tuple {
        /* Compressed header matching field rules.  The TP_VLAN_PRI_MAP
         * register selects which of these fields will participate in the
         * filter match rules -- up to a maximum of 36 bits.  Because
         * TP_VLAN_PRI_MAP is a global register, all filters must use the same
         * set of fields.
         */
        uint32_t ethtype:ETHTYPE_BITWIDTH;      /* Ethernet type */
        uint32_t frag:FRAG_BITWIDTH;            /* IP fragmentation header */
        uint32_t ivlan_vld:1;                   /* inner VLAN valid */
        uint32_t ovlan_vld:1;                   /* outer VLAN valid */
        uint32_t pfvf_vld:1;                    /* PF/VF valid */
        uint32_t macidx:MACIDX_BITWIDTH;        /* exact match MAC index */
        uint32_t fcoe:FCOE_BITWIDTH;            /* FCoE packet */
        uint32_t iport:IPORT_BITWIDTH;          /* ingress port */
        uint32_t matchtype:MATCHTYPE_BITWIDTH;  /* MPS match type */
        uint32_t proto:PROTO_BITWIDTH;          /* protocol type */
        uint32_t tos:TOS_BITWIDTH;              /* TOS/Traffic Type */
        uint32_t pf:PF_BITWIDTH;                /* PCI-E PF ID */
        uint32_t vf:VF_BITWIDTH;                /* PCI-E VF ID */
        uint32_t ivlan:IVLAN_BITWIDTH;          /* inner VLAN */
        uint32_t ovlan:OVLAN_BITWIDTH;          /* outer VLAN */

        /* Uncompressed header matching field rules.  These are always
         * available for field rules.
         */
        uint8_t lip[16];        /* local IP address (IPv4 in [3:0]) */
        uint8_t fip[16];        /* foreign IP address (IPv4 in [3:0]) */
        uint16_t lport;         /* local port */
        uint16_t fport;         /* foreign port */
};

/* A filter ioctl command.
 */
struct ch_filter_specification {
        /* Administrative fields for filter.
         */
        uint32_t hitcnts:1;     /* count filter hits in TCB */
        uint32_t prio:1;        /* filter has priority over active/server */

        /* Fundamental filter typing.  This is the one element of filter
         * matching that doesn't exist as a (value, mask) tuple.
         */
        uint32_t type:1;        /* 0 => IPv4, 1 => IPv6 */

        /* Packet dispatch information.  Ingress packets which match the
         * filter rules will be dropped, passed to the host or switched back
         * out as egress packets.
         */
        uint32_t action:2;      /* drop, pass, switch */

        uint32_t rpttid:1;      /* report TID in RSS hash field */

        uint32_t dirsteer:1;    /* 0 => RSS, 1 => steer to iq */
        uint32_t iq:10;         /* ingress queue */

        uint32_t maskhash:1;    /* dirsteer=0: store RSS hash in TCB */
        uint32_t dirsteerhash:1;/* dirsteer=1: 0 => TCB contains RSS hash */
                                /*             1 => TCB contains IQ ID */

        /* Switch proxy/rewrite fields.  An ingress packet which matches a
         * filter with "switch" set will be looped back out as an egress
         * packet -- potentially with some Ethernet header rewriting.
         */
        uint32_t eport:2;       /* egress port to switch packet out */
        uint32_t newdmac:1;     /* rewrite destination MAC address */
        uint32_t newsmac:1;     /* rewrite source MAC address */
        uint32_t newvlan:2;     /* rewrite VLAN Tag */
        uint8_t dmac[ETH_ALEN]; /* new destination MAC address */
        uint8_t smac[ETH_ALEN]; /* new source MAC address */
        uint16_t vlan;          /* VLAN Tag to insert */

        /* Filter rule value/mask pairs.
         */
        struct ch_filter_tuple val;
        struct ch_filter_tuple mask;
};

enum {
        FILTER_PASS = 0,        /* default */
        FILTER_DROP,
        FILTER_SWITCH
};

enum {
        VLAN_NOCHANGE = 0,      /* default */
        VLAN_REMOVE,
        VLAN_INSERT,
        VLAN_REWRITE
};

static inline int is_t5(enum chip_type chip)
{
        return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T5;
}

static inline int is_t4(enum chip_type chip)
{
        return CHELSIO_CHIP_VERSION(chip) == CHELSIO_T4;
}

static inline u32 t4_read_reg(struct adapter *adap, u32 reg_addr)
{
        return readl(adap->regs + reg_addr);
}

static inline void t4_write_reg(struct adapter *adap, u32 reg_addr, u32 val)
{
        writel(val, adap->regs + reg_addr);
}

#ifndef readq
static inline u64 readq(const volatile void __iomem *addr)
{
        return readl(addr) + ((u64)readl(addr + 4) << 32);
}

static inline void writeq(u64 val, volatile void __iomem *addr)
{
        writel(val, addr);
        writel(val >> 32, addr + 4);
}
#endif

static inline u64 t4_read_reg64(struct adapter *adap, u32 reg_addr)
{
        return readq(adap->regs + reg_addr);
}

static inline void t4_write_reg64(struct adapter *adap, u32 reg_addr, u64 val)
{
        writeq(val, adap->regs + reg_addr);
}

/**
 * netdev2pinfo - return the port_info structure associated with a net_device
 * @dev: the netdev
 *
 * Return the struct port_info associated with a net_device
 */
static inline struct port_info *netdev2pinfo(const struct net_device *dev)
{
        return netdev_priv(dev);
}

/**
 * adap2pinfo - return the port_info of a port
 * @adap: the adapter
 * @idx: the port index
 *
 * Return the port_info structure for the port of the given index.
 */
static inline struct port_info *adap2pinfo(struct adapter *adap, int idx)
{
        return netdev_priv(adap->port[idx]);
}

/**
 * netdev2adap - return the adapter structure associated with a net_device
 * @dev: the netdev
 *
 * Return the struct adapter associated with a net_device
 */
static inline struct adapter *netdev2adap(const struct net_device *dev)
{
        return netdev2pinfo(dev)->adapter;
}

void t4_os_portmod_changed(const struct adapter *adap, int port_id);
void t4_os_link_changed(struct adapter *adap, int port_id, int link_stat);

void *t4_alloc_mem(size_t size);

void t4_free_sge_resources(struct adapter *adap);
void t4_free_ofld_rxqs(struct adapter *adap, int n, struct sge_ofld_rxq *q);
irq_handler_t t4_intr_handler(struct adapter *adap);
netdev_tx_t t4_eth_xmit(struct sk_buff *skb, struct net_device *dev);
int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp,
                     const struct pkt_gl *gl);
int t4_mgmt_tx(struct adapter *adap, struct sk_buff *skb);
int t4_ofld_send(struct adapter *adap, struct sk_buff *skb);
int t4_sge_alloc_rxq(struct adapter *adap, struct sge_rspq *iq, bool fwevtq,
                     struct net_device *dev, int intr_idx,
                     struct sge_fl *fl, rspq_handler_t hnd);
int t4_sge_alloc_eth_txq(struct adapter *adap, struct sge_eth_txq *txq,
                         struct net_device *dev, struct netdev_queue *netdevq,
                         unsigned int iqid);
int t4_sge_alloc_ctrl_txq(struct adapter *adap, struct sge_ctrl_txq *txq,
                          struct net_device *dev, unsigned int iqid,
                          unsigned int cmplqid);
int t4_sge_alloc_ofld_txq(struct adapter *adap, struct sge_ofld_txq *txq,
                          struct net_device *dev, unsigned int iqid);
irqreturn_t t4_sge_intr_msix(int irq, void *cookie);
int t4_sge_init(struct adapter *adap);
void t4_sge_start(struct adapter *adap);
void t4_sge_stop(struct adapter *adap);
extern int dbfifo_int_thresh;

#define for_each_port(adapter, iter) \
        for (iter = 0; iter < (adapter)->params.nports; ++iter)

static inline int is_bypass(struct adapter *adap)
{
        return adap->params.bypass;
}

static inline int is_bypass_device(int device)
{
        /* this should be set based upon device capabilities */
        switch (device) {
        case 0x440b:
        case 0x440c:
                return 1;
        default:
                return 0;
        }
}

static inline unsigned int core_ticks_per_usec(const struct adapter *adap)
{
        return adap->params.vpd.cclk / 1000;
}

static inline unsigned int us_to_core_ticks(const struct adapter *adap,
                                            unsigned int us)
{
        return (us * adap->params.vpd.cclk) / 1000;
}

static inline unsigned int core_ticks_to_us(const struct adapter *adapter,
                                            unsigned int ticks)
{
        /* add Core Clock / 2 to round ticks to nearest uS */
        return ((ticks * 1000 + adapter->params.vpd.cclk/2) /
                adapter->params.vpd.cclk);
}

void t4_set_reg_field(struct adapter *adap, unsigned int addr, u32 mask,
                      u32 val);

int t4_wr_mbox_meat(struct adapter *adap, int mbox, const void *cmd, int size,
                    void *rpl, bool sleep_ok);

static inline int t4_wr_mbox(struct adapter *adap, int mbox, const void *cmd,
                             int size, void *rpl)
{
        return t4_wr_mbox_meat(adap, mbox, cmd, size, rpl, true);
}

static inline int t4_wr_mbox_ns(struct adapter *adap, int mbox, const void *cmd,
                                int size, void *rpl)
{
        return t4_wr_mbox_meat(adap, mbox, cmd, size, rpl, false);
}

void t4_write_indirect(struct adapter *adap, unsigned int addr_reg,
                       unsigned int data_reg, const u32 *vals,
                       unsigned int nregs, unsigned int start_idx);
void t4_read_indirect(struct adapter *adap, unsigned int addr_reg,
                      unsigned int data_reg, u32 *vals, unsigned int nregs,
                      unsigned int start_idx);
void t4_hw_pci_read_cfg4(struct adapter *adapter, int reg, u32 *val);

struct fw_filter_wr;

void t4_intr_enable(struct adapter *adapter);
void t4_intr_disable(struct adapter *adapter);
int t4_slow_intr_handler(struct adapter *adapter);

int t4_wait_dev_ready(void __iomem *regs);
int t4_link_start(struct adapter *adap, unsigned int mbox, unsigned int port,
                  struct link_config *lc);
int t4_restart_aneg(struct adapter *adap, unsigned int mbox, unsigned int port);

#define T4_MEMORY_WRITE 0
#define T4_MEMORY_READ  1
int t4_memory_rw(struct adapter *adap, int win, int mtype, u32 addr, u32 len,
                 __be32 *buf, int dir);
static inline int t4_memory_write(struct adapter *adap, int mtype, u32 addr,
                                  u32 len, __be32 *buf)
{
        return t4_memory_rw(adap, 0, mtype, addr, len, buf, 0);
}

int t4_seeprom_wp(struct adapter *adapter, bool enable);
int get_vpd_params(struct adapter *adapter, struct vpd_params *p);
int t4_load_fw(struct adapter *adapter, const u8 *fw_data, unsigned int size);
int t4_fw_upgrade(struct adapter *adap, unsigned int mbox,
                  const u8 *fw_data, unsigned int size, int force);
unsigned int t4_flash_cfg_addr(struct adapter *adapter);
int t4_get_fw_version(struct adapter *adapter, u32 *vers);
int t4_get_tp_version(struct adapter *adapter, u32 *vers);
int t4_prep_fw(struct adapter *adap, struct fw_info *fw_info,
               const u8 *fw_data, unsigned int fw_size,
               struct fw_hdr *card_fw, enum dev_state state, int *reset);
int t4_prep_adapter(struct adapter *adapter);
int t4_init_tp_params(struct adapter *adap);
int t4_filter_field_shift(const struct adapter *adap, int filter_sel);
int t4_port_init(struct adapter *adap, int mbox, int pf, int vf);
void t4_fatal_err(struct adapter *adapter);
int t4_config_rss_range(struct adapter *adapter, int mbox, unsigned int viid,
                        int start, int n, const u16 *rspq, unsigned int nrspq);
int t4_config_glbl_rss(struct adapter *adapter, int mbox, unsigned int mode,
                       unsigned int flags);
int t4_mc_read(struct adapter *adap, int idx, u32 addr, __be32 *data,
               u64 *parity);
int t4_edc_read(struct adapter *adap, int idx, u32 addr, __be32 *data,
                u64 *parity);
const char *t4_get_port_type_description(enum fw_port_type port_type);
void t4_get_port_stats(struct adapter *adap, int idx, struct port_stats *p);
void t4_read_mtu_tbl(struct adapter *adap, u16 *mtus, u8 *mtu_log);
void t4_tp_wr_bits_indirect(struct adapter *adap, unsigned int addr,
                            unsigned int mask, unsigned int val);
void t4_tp_get_tcp_stats(struct adapter *adap, struct tp_tcp_stats *v4,
                         struct tp_tcp_stats *v6);
void t4_load_mtus(struct adapter *adap, const unsigned short *mtus,
                  const unsigned short *alpha, const unsigned short *beta);

void t4_mk_filtdelwr(unsigned int ftid, struct fw_filter_wr *wr, int qid);

void t4_wol_magic_enable(struct adapter *adap, unsigned int port,
                         const u8 *addr);
int t4_wol_pat_enable(struct adapter *adap, unsigned int port, unsigned int map,
                      u64 mask0, u64 mask1, unsigned int crc, bool enable);

int t4_fw_hello(struct adapter *adap, unsigned int mbox, unsigned int evt_mbox,
                enum dev_master master, enum dev_state *state);
int t4_fw_bye(struct adapter *adap, unsigned int mbox);
int t4_early_init(struct adapter *adap, unsigned int mbox);
int t4_fw_reset(struct adapter *adap, unsigned int mbox, int reset);
int t4_fixup_host_params(struct adapter *adap, unsigned int page_size,
                          unsigned int cache_line_size);
int t4_fw_initialize(struct adapter *adap, unsigned int mbox);
int t4_query_params(struct adapter *adap, unsigned int mbox, unsigned int pf,
                    unsigned int vf, unsigned int nparams, const u32 *params,
                    u32 *val);
int t4_set_params(struct adapter *adap, unsigned int mbox, unsigned int pf,
                  unsigned int vf, unsigned int nparams, const u32 *params,
                  const u32 *val);
int t4_set_params_nosleep(struct adapter *adap, unsigned int mbox,
                          unsigned int pf, unsigned int vf,
                          unsigned int nparams, const u32 *params,
                          const u32 *val);
int t4_cfg_pfvf(struct adapter *adap, unsigned int mbox, unsigned int pf,
                unsigned int vf, unsigned int txq, unsigned int txq_eth_ctrl,
                unsigned int rxqi, unsigned int rxq, unsigned int tc,
                unsigned int vi, unsigned int cmask, unsigned int pmask,
                unsigned int nexact, unsigned int rcaps, unsigned int wxcaps);
int t4_alloc_vi(struct adapter *adap, unsigned int mbox, unsigned int port,
                unsigned int pf, unsigned int vf, unsigned int nmac, u8 *mac,
                unsigned int *rss_size);
int t4_set_rxmode(struct adapter *adap, unsigned int mbox, unsigned int viid,
                int mtu, int promisc, int all_multi, int bcast, int vlanex,
                bool sleep_ok);
int t4_alloc_mac_filt(struct adapter *adap, unsigned int mbox,
                      unsigned int viid, bool free, unsigned int naddr,
                      const u8 **addr, u16 *idx, u64 *hash, bool sleep_ok);
int t4_change_mac(struct adapter *adap, unsigned int mbox, unsigned int viid,
                  int idx, const u8 *addr, bool persist, bool add_smt);
int t4_set_addr_hash(struct adapter *adap, unsigned int mbox, unsigned int viid,
                     bool ucast, u64 vec, bool sleep_ok);
int t4_enable_vi_params(struct adapter *adap, unsigned int mbox,
                        unsigned int viid, bool rx_en, bool tx_en, bool dcb_en);
int t4_enable_vi(struct adapter *adap, unsigned int mbox, unsigned int viid,
                 bool rx_en, bool tx_en);
int t4_identify_port(struct adapter *adap, unsigned int mbox, unsigned int viid,
                     unsigned int nblinks);
int t4_mdio_rd(struct adapter *adap, unsigned int mbox, unsigned int phy_addr,
               unsigned int mmd, unsigned int reg, u16 *valp);
int t4_mdio_wr(struct adapter *adap, unsigned int mbox, unsigned int phy_addr,
               unsigned int mmd, unsigned int reg, u16 val);
int t4_iq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
               unsigned int vf, unsigned int iqtype, unsigned int iqid,
               unsigned int fl0id, unsigned int fl1id);
int t4_eth_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
                   unsigned int vf, unsigned int eqid);
int t4_ctrl_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
                    unsigned int vf, unsigned int eqid);
int t4_ofld_eq_free(struct adapter *adap, unsigned int mbox, unsigned int pf,
                    unsigned int vf, unsigned int eqid);
int t4_handle_fw_rpl(struct adapter *adap, const __be64 *rpl);
void t4_db_full(struct adapter *adapter);
void t4_db_dropped(struct adapter *adapter);
int t4_fwaddrspace_write(struct adapter *adap, unsigned int mbox,
                         u32 addr, u32 val);
void t4_sge_decode_idma_state(struct adapter *adapter, int state);
#endif /* __CXGB4_H__ */