/*
 * 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.
 */

#include <linux/seq_file.h>
#include <linux/debugfs.h>
#include <linux/string_helpers.h>
#include <linux/sort.h>
#include <linux/ctype.h>

#include "cxgb4.h"
#include "t4_regs.h"
#include "t4_values.h"
#include "t4fw_api.h"
#include "cxgb4_debugfs.h"
#include "clip_tbl.h"
#include "l2t.h"
#include "cudbg_if.h"
#include "cudbg_lib_common.h"
#include "cudbg_entity.h"
#include "cudbg_lib.h"
#include "cxgb4_tc_mqprio.h"

/* generic seq_file support for showing a table of size rows x width. */
static void *seq_tab_get_idx(struct seq_tab *tb, loff_t pos)
{
        pos -= tb->skip_first;
        return pos >= tb->rows ? NULL : &tb->data[pos * tb->width];
}

static void *seq_tab_start(struct seq_file *seq, loff_t *pos)
{
        struct seq_tab *tb = seq->private;

        if (tb->skip_first && *pos == 0)
                return SEQ_START_TOKEN;

        return seq_tab_get_idx(tb, *pos);
}

static void *seq_tab_next(struct seq_file *seq, void *v, loff_t *pos)
{
        v = seq_tab_get_idx(seq->private, *pos + 1);
        ++(*pos);
        return v;
}

static void seq_tab_stop(struct seq_file *seq, void *v)
{
}

static int seq_tab_show(struct seq_file *seq, void *v)
{
        const struct seq_tab *tb = seq->private;

        return tb->show(seq, v, ((char *)v - tb->data) / tb->width);
}

static const struct seq_operations seq_tab_ops = {
        .start = seq_tab_start,
        .next  = seq_tab_next,
        .stop  = seq_tab_stop,
        .show  = seq_tab_show
};

struct seq_tab *seq_open_tab(struct file *f, unsigned int rows,
                             unsigned int width, unsigned int have_header,
                             int (*show)(struct seq_file *seq, void *v, int i))
{
        struct seq_tab *p;

        p = __seq_open_private(f, &seq_tab_ops, sizeof(*p) + rows * width);
        if (p) {
                p->show = show;
                p->rows = rows;
                p->width = width;
                p->skip_first = have_header != 0;
        }
        return p;
}

/* Trim the size of a seq_tab to the supplied number of rows.  The operation is
 * irreversible.
 */
static int seq_tab_trim(struct seq_tab *p, unsigned int new_rows)
{
        if (new_rows > p->rows)
                return -EINVAL;
        p->rows = new_rows;
        return 0;
}

static int cim_la_show(struct seq_file *seq, void *v, int idx)
{
        if (v == SEQ_START_TOKEN)
                seq_puts(seq, "Status   Data      PC     LS0Stat  LS0Addr "
                         "            LS0Data\n");
        else {
                const u32 *p = v;

                seq_printf(seq,
                           "  %02x  %x%07x %x%07x %08x %08x %08x%08x%08x%08x\n",
                           (p[0] >> 4) & 0xff, p[0] & 0xf, p[1] >> 4,
                           p[1] & 0xf, p[2] >> 4, p[2] & 0xf, p[3], p[4], p[5],
                           p[6], p[7]);
        }
        return 0;
}

static int cim_la_show_3in1(struct seq_file *seq, void *v, int idx)
{
        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "Status   Data      PC\n");
        } else {
                const u32 *p = v;

                seq_printf(seq, "  %02x   %08x %08x\n", p[5] & 0xff, p[6],
                           p[7]);
                seq_printf(seq, "  %02x   %02x%06x %02x%06x\n",
                           (p[3] >> 8) & 0xff, p[3] & 0xff, p[4] >> 8,
                           p[4] & 0xff, p[5] >> 8);
                seq_printf(seq, "  %02x   %x%07x %x%07x\n", (p[0] >> 4) & 0xff,
                           p[0] & 0xf, p[1] >> 4, p[1] & 0xf, p[2] >> 4);
        }
        return 0;
}

static int cim_la_show_t6(struct seq_file *seq, void *v, int idx)
{
        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "Status   Inst    Data      PC     LS0Stat  "
                         "LS0Addr  LS0Data  LS1Stat  LS1Addr  LS1Data\n");
        } else {
                const u32 *p = v;

                seq_printf(seq, "  %02x   %04x%04x %04x%04x %04x%04x %08x %08x %08x %08x %08x %08x\n",
                           (p[9] >> 16) & 0xff,       /* Status */
                           p[9] & 0xffff, p[8] >> 16, /* Inst */
                           p[8] & 0xffff, p[7] >> 16, /* Data */
                           p[7] & 0xffff, p[6] >> 16, /* PC */
                           p[2], p[1], p[0],      /* LS0 Stat, Addr and Data */
                           p[5], p[4], p[3]);     /* LS1 Stat, Addr and Data */
        }
        return 0;
}

static int cim_la_show_pc_t6(struct seq_file *seq, void *v, int idx)
{
        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "Status   Inst    Data      PC\n");
        } else {
                const u32 *p = v;

                seq_printf(seq, "  %02x   %08x %08x %08x\n",
                           p[3] & 0xff, p[2], p[1], p[0]);
                seq_printf(seq, "  %02x   %02x%06x %02x%06x %02x%06x\n",
                           (p[6] >> 8) & 0xff, p[6] & 0xff, p[5] >> 8,
                           p[5] & 0xff, p[4] >> 8, p[4] & 0xff, p[3] >> 8);
                seq_printf(seq, "  %02x   %04x%04x %04x%04x %04x%04x\n",
                           (p[9] >> 16) & 0xff, p[9] & 0xffff, p[8] >> 16,
                           p[8] & 0xffff, p[7] >> 16, p[7] & 0xffff,
                           p[6] >> 16);
        }
        return 0;
}

static int cim_la_open(struct inode *inode, struct file *file)
{
        int ret;
        unsigned int cfg;
        struct seq_tab *p;
        struct adapter *adap = inode->i_private;

        ret = t4_cim_read(adap, UP_UP_DBG_LA_CFG_A, 1, &cfg);
        if (ret)
                return ret;

        if (is_t6(adap->params.chip)) {
                /* +1 to account for integer division of CIMLA_SIZE/10 */
                p = seq_open_tab(file, (adap->params.cim_la_size / 10) + 1,
                                 10 * sizeof(u32), 1,
                                 cfg & UPDBGLACAPTPCONLY_F ?
                                        cim_la_show_pc_t6 : cim_la_show_t6);
        } else {
                p = seq_open_tab(file, adap->params.cim_la_size / 8,
                                 8 * sizeof(u32), 1,
                                 cfg & UPDBGLACAPTPCONLY_F ? cim_la_show_3in1 :
                                                             cim_la_show);
        }
        if (!p)
                return -ENOMEM;

        ret = t4_cim_read_la(adap, (u32 *)p->data, NULL);
        if (ret)
                seq_release_private(inode, file);
        return ret;
}

static const struct file_operations cim_la_fops = {
        .owner   = THIS_MODULE,
        .open    = cim_la_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

static int cim_pif_la_show(struct seq_file *seq, void *v, int idx)
{
        const u32 *p = v;

        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "Cntl ID DataBE   Addr                 Data\n");
        } else if (idx < CIM_PIFLA_SIZE) {
                seq_printf(seq, " %02x  %02x  %04x  %08x %08x%08x%08x%08x\n",
                           (p[5] >> 22) & 0xff, (p[5] >> 16) & 0x3f,
                           p[5] & 0xffff, p[4], p[3], p[2], p[1], p[0]);
        } else {
                if (idx == CIM_PIFLA_SIZE)
                        seq_puts(seq, "\nCntl ID               Data\n");
                seq_printf(seq, " %02x  %02x %08x%08x%08x%08x\n",
                           (p[4] >> 6) & 0xff, p[4] & 0x3f,
                           p[3], p[2], p[1], p[0]);
        }
        return 0;
}

static int cim_pif_la_open(struct inode *inode, struct file *file)
{
        struct seq_tab *p;
        struct adapter *adap = inode->i_private;

        p = seq_open_tab(file, 2 * CIM_PIFLA_SIZE, 6 * sizeof(u32), 1,
                         cim_pif_la_show);
        if (!p)
                return -ENOMEM;

        t4_cim_read_pif_la(adap, (u32 *)p->data,
                           (u32 *)p->data + 6 * CIM_PIFLA_SIZE, NULL, NULL);
        return 0;
}

static const struct file_operations cim_pif_la_fops = {
        .owner   = THIS_MODULE,
        .open    = cim_pif_la_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

static int cim_ma_la_show(struct seq_file *seq, void *v, int idx)
{
        const u32 *p = v;

        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "\n");
        } else if (idx < CIM_MALA_SIZE) {
                seq_printf(seq, "%02x%08x%08x%08x%08x\n",
                           p[4], p[3], p[2], p[1], p[0]);
        } else {
                if (idx == CIM_MALA_SIZE)
                        seq_puts(seq,
                                 "\nCnt ID Tag UE       Data       RDY VLD\n");
                seq_printf(seq, "%3u %2u  %x   %u %08x%08x  %u   %u\n",
                           (p[2] >> 10) & 0xff, (p[2] >> 7) & 7,
                           (p[2] >> 3) & 0xf, (p[2] >> 2) & 1,
                           (p[1] >> 2) | ((p[2] & 3) << 30),
                           (p[0] >> 2) | ((p[1] & 3) << 30), (p[0] >> 1) & 1,
                           p[0] & 1);
        }
        return 0;
}

static int cim_ma_la_open(struct inode *inode, struct file *file)
{
        struct seq_tab *p;
        struct adapter *adap = inode->i_private;

        p = seq_open_tab(file, 2 * CIM_MALA_SIZE, 5 * sizeof(u32), 1,
                         cim_ma_la_show);
        if (!p)
                return -ENOMEM;

        t4_cim_read_ma_la(adap, (u32 *)p->data,
                          (u32 *)p->data + 5 * CIM_MALA_SIZE);
        return 0;
}

static const struct file_operations cim_ma_la_fops = {
        .owner   = THIS_MODULE,
        .open    = cim_ma_la_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

static int cim_qcfg_show(struct seq_file *seq, void *v)
{
        static const char * const qname[] = {
                "TP0", "TP1", "ULP", "SGE0", "SGE1", "NC-SI",
                "ULP0", "ULP1", "ULP2", "ULP3", "SGE", "NC-SI",
                "SGE0-RX", "SGE1-RX"
        };

        int i;
        struct adapter *adap = seq->private;
        u16 base[CIM_NUM_IBQ + CIM_NUM_OBQ_T5];
        u16 size[CIM_NUM_IBQ + CIM_NUM_OBQ_T5];
        u32 stat[(4 * (CIM_NUM_IBQ + CIM_NUM_OBQ_T5))];
        u16 thres[CIM_NUM_IBQ];
        u32 obq_wr_t4[2 * CIM_NUM_OBQ], *wr;
        u32 obq_wr_t5[2 * CIM_NUM_OBQ_T5];
        u32 *p = stat;
        int cim_num_obq = is_t4(adap->params.chip) ?
                                CIM_NUM_OBQ : CIM_NUM_OBQ_T5;

        i = t4_cim_read(adap, is_t4(adap->params.chip) ? UP_IBQ_0_RDADDR_A :
                        UP_IBQ_0_SHADOW_RDADDR_A,
                        ARRAY_SIZE(stat), stat);
        if (!i) {
                if (is_t4(adap->params.chip)) {
                        i = t4_cim_read(adap, UP_OBQ_0_REALADDR_A,
                                        ARRAY_SIZE(obq_wr_t4), obq_wr_t4);
                        wr = obq_wr_t4;
                } else {
                        i = t4_cim_read(adap, UP_OBQ_0_SHADOW_REALADDR_A,
                                        ARRAY_SIZE(obq_wr_t5), obq_wr_t5);
                        wr = obq_wr_t5;
                }
        }
        if (i)
                return i;

        t4_read_cimq_cfg(adap, base, size, thres);

        seq_printf(seq,
                   "  Queue  Base  Size Thres  RdPtr WrPtr  SOP  EOP Avail\n");
        for (i = 0; i < CIM_NUM_IBQ; i++, p += 4)
                seq_printf(seq, "%7s %5x %5u %5u %6x  %4x %4u %4u %5u\n",
                           qname[i], base[i], size[i], thres[i],
                           IBQRDADDR_G(p[0]), IBQWRADDR_G(p[1]),
                           QUESOPCNT_G(p[3]), QUEEOPCNT_G(p[3]),
                           QUEREMFLITS_G(p[2]) * 16);
        for ( ; i < CIM_NUM_IBQ + cim_num_obq; i++, p += 4, wr += 2)
                seq_printf(seq, "%7s %5x %5u %12x  %4x %4u %4u %5u\n",
                           qname[i], base[i], size[i],
                           QUERDADDR_G(p[0]) & 0x3fff, wr[0] - base[i],
                           QUESOPCNT_G(p[3]), QUEEOPCNT_G(p[3]),
                           QUEREMFLITS_G(p[2]) * 16);
        return 0;
}
DEFINE_SHOW_ATTRIBUTE(cim_qcfg);

static int cimq_show(struct seq_file *seq, void *v, int idx)
{
        const u32 *p = v;

        seq_printf(seq, "%#06x: %08x %08x %08x %08x\n", idx * 16, p[0], p[1],
                   p[2], p[3]);
        return 0;
}

static int cim_ibq_open(struct inode *inode, struct file *file)
{
        int ret;
        struct seq_tab *p;
        unsigned int qid = (uintptr_t)inode->i_private & 7;
        struct adapter *adap = inode->i_private - qid;

        p = seq_open_tab(file, CIM_IBQ_SIZE, 4 * sizeof(u32), 0, cimq_show);
        if (!p)
                return -ENOMEM;

        ret = t4_read_cim_ibq(adap, qid, (u32 *)p->data, CIM_IBQ_SIZE * 4);
        if (ret < 0)
                seq_release_private(inode, file);
        else
                ret = 0;
        return ret;
}

static const struct file_operations cim_ibq_fops = {
        .owner   = THIS_MODULE,
        .open    = cim_ibq_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

static int cim_obq_open(struct inode *inode, struct file *file)
{
        int ret;
        struct seq_tab *p;
        unsigned int qid = (uintptr_t)inode->i_private & 7;
        struct adapter *adap = inode->i_private - qid;

        p = seq_open_tab(file, 6 * CIM_OBQ_SIZE, 4 * sizeof(u32), 0, cimq_show);
        if (!p)
                return -ENOMEM;

        ret = t4_read_cim_obq(adap, qid, (u32 *)p->data, 6 * CIM_OBQ_SIZE * 4);
        if (ret < 0) {
                seq_release_private(inode, file);
        } else {
                seq_tab_trim(p, ret / 4);
                ret = 0;
        }
        return ret;
}

static const struct file_operations cim_obq_fops = {
        .owner   = THIS_MODULE,
        .open    = cim_obq_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

struct field_desc {
        const char *name;
        unsigned int start;
        unsigned int width;
};

static void field_desc_show(struct seq_file *seq, u64 v,
                            const struct field_desc *p)
{
        char buf[32];
        int line_size = 0;

        while (p->name) {
                u64 mask = (1ULL << p->width) - 1;
                int len = scnprintf(buf, sizeof(buf), "%s: %llu", p->name,
                                    ((unsigned long long)v >> p->start) & mask);

                if (line_size + len >= 79) {
                        line_size = 8;
                        seq_puts(seq, "\n        ");
                }
                seq_printf(seq, "%s ", buf);
                line_size += len + 1;
                p++;
        }
        seq_putc(seq, '\n');
}

static struct field_desc tp_la0[] = {
        { "RcfOpCodeOut", 60, 4 },
        { "State", 56, 4 },
        { "WcfState", 52, 4 },
        { "RcfOpcSrcOut", 50, 2 },
        { "CRxError", 49, 1 },
        { "ERxError", 48, 1 },
        { "SanityFailed", 47, 1 },
        { "SpuriousMsg", 46, 1 },
        { "FlushInputMsg", 45, 1 },
        { "FlushInputCpl", 44, 1 },
        { "RssUpBit", 43, 1 },
        { "RssFilterHit", 42, 1 },
        { "Tid", 32, 10 },
        { "InitTcb", 31, 1 },
        { "LineNumber", 24, 7 },
        { "Emsg", 23, 1 },
        { "EdataOut", 22, 1 },
        { "Cmsg", 21, 1 },
        { "CdataOut", 20, 1 },
        { "EreadPdu", 19, 1 },
        { "CreadPdu", 18, 1 },
        { "TunnelPkt", 17, 1 },
        { "RcfPeerFin", 16, 1 },
        { "RcfReasonOut", 12, 4 },
        { "TxCchannel", 10, 2 },
        { "RcfTxChannel", 8, 2 },
        { "RxEchannel", 6, 2 },
        { "RcfRxChannel", 5, 1 },
        { "RcfDataOutSrdy", 4, 1 },
        { "RxDvld", 3, 1 },
        { "RxOoDvld", 2, 1 },
        { "RxCongestion", 1, 1 },
        { "TxCongestion", 0, 1 },
        { NULL }
};

static int tp_la_show(struct seq_file *seq, void *v, int idx)
{
        const u64 *p = v;

        field_desc_show(seq, *p, tp_la0);
        return 0;
}

static int tp_la_show2(struct seq_file *seq, void *v, int idx)
{
        const u64 *p = v;

        if (idx)
                seq_putc(seq, '\n');
        field_desc_show(seq, p[0], tp_la0);
        if (idx < (TPLA_SIZE / 2 - 1) || p[1] != ~0ULL)
                field_desc_show(seq, p[1], tp_la0);
        return 0;
}

static int tp_la_show3(struct seq_file *seq, void *v, int idx)
{
        static struct field_desc tp_la1[] = {
                { "CplCmdIn", 56, 8 },
                { "CplCmdOut", 48, 8 },
                { "ESynOut", 47, 1 },
                { "EAckOut", 46, 1 },
                { "EFinOut", 45, 1 },
                { "ERstOut", 44, 1 },
                { "SynIn", 43, 1 },
                { "AckIn", 42, 1 },
                { "FinIn", 41, 1 },
                { "RstIn", 40, 1 },
                { "DataIn", 39, 1 },
                { "DataInVld", 38, 1 },
                { "PadIn", 37, 1 },
                { "RxBufEmpty", 36, 1 },
                { "RxDdp", 35, 1 },
                { "RxFbCongestion", 34, 1 },
                { "TxFbCongestion", 33, 1 },
                { "TxPktSumSrdy", 32, 1 },
                { "RcfUlpType", 28, 4 },
                { "Eread", 27, 1 },
                { "Ebypass", 26, 1 },
                { "Esave", 25, 1 },
                { "Static0", 24, 1 },
                { "Cread", 23, 1 },
                { "Cbypass", 22, 1 },
                { "Csave", 21, 1 },
                { "CPktOut", 20, 1 },
                { "RxPagePoolFull", 18, 2 },
                { "RxLpbkPkt", 17, 1 },
                { "TxLpbkPkt", 16, 1 },
                { "RxVfValid", 15, 1 },
                { "SynLearned", 14, 1 },
                { "SetDelEntry", 13, 1 },
                { "SetInvEntry", 12, 1 },
                { "CpcmdDvld", 11, 1 },
                { "CpcmdSave", 10, 1 },
                { "RxPstructsFull", 8, 2 },
                { "EpcmdDvld", 7, 1 },
                { "EpcmdFlush", 6, 1 },
                { "EpcmdTrimPrefix", 5, 1 },
                { "EpcmdTrimPostfix", 4, 1 },
                { "ERssIp4Pkt", 3, 1 },
                { "ERssIp6Pkt", 2, 1 },
                { "ERssTcpUdpPkt", 1, 1 },
                { "ERssFceFipPkt", 0, 1 },
                { NULL }
        };
        static struct field_desc tp_la2[] = {
                { "CplCmdIn", 56, 8 },
                { "MpsVfVld", 55, 1 },
                { "MpsPf", 52, 3 },
                { "MpsVf", 44, 8 },
                { "SynIn", 43, 1 },
                { "AckIn", 42, 1 },
                { "FinIn", 41, 1 },
                { "RstIn", 40, 1 },
                { "DataIn", 39, 1 },
                { "DataInVld", 38, 1 },
                { "PadIn", 37, 1 },
                { "RxBufEmpty", 36, 1 },
                { "RxDdp", 35, 1 },
                { "RxFbCongestion", 34, 1 },
                { "TxFbCongestion", 33, 1 },
                { "TxPktSumSrdy", 32, 1 },
                { "RcfUlpType", 28, 4 },
                { "Eread", 27, 1 },
                { "Ebypass", 26, 1 },
                { "Esave", 25, 1 },
                { "Static0", 24, 1 },
                { "Cread", 23, 1 },
                { "Cbypass", 22, 1 },
                { "Csave", 21, 1 },
                { "CPktOut", 20, 1 },
                { "RxPagePoolFull", 18, 2 },
                { "RxLpbkPkt", 17, 1 },
                { "TxLpbkPkt", 16, 1 },
                { "RxVfValid", 15, 1 },
                { "SynLearned", 14, 1 },
                { "SetDelEntry", 13, 1 },
                { "SetInvEntry", 12, 1 },
                { "CpcmdDvld", 11, 1 },
                { "CpcmdSave", 10, 1 },
                { "RxPstructsFull", 8, 2 },
                { "EpcmdDvld", 7, 1 },
                { "EpcmdFlush", 6, 1 },
                { "EpcmdTrimPrefix", 5, 1 },
                { "EpcmdTrimPostfix", 4, 1 },
                { "ERssIp4Pkt", 3, 1 },
                { "ERssIp6Pkt", 2, 1 },
                { "ERssTcpUdpPkt", 1, 1 },
                { "ERssFceFipPkt", 0, 1 },
                { NULL }
        };
        const u64 *p = v;

        if (idx)
                seq_putc(seq, '\n');
        field_desc_show(seq, p[0], tp_la0);
        if (idx < (TPLA_SIZE / 2 - 1) || p[1] != ~0ULL)
                field_desc_show(seq, p[1], (p[0] & BIT(17)) ? tp_la2 : tp_la1);
        return 0;
}

static int tp_la_open(struct inode *inode, struct file *file)
{
        struct seq_tab *p;
        struct adapter *adap = inode->i_private;

        switch (DBGLAMODE_G(t4_read_reg(adap, TP_DBG_LA_CONFIG_A))) {
        case 2:
                p = seq_open_tab(file, TPLA_SIZE / 2, 2 * sizeof(u64), 0,
                                 tp_la_show2);
                break;
        case 3:
                p = seq_open_tab(file, TPLA_SIZE / 2, 2 * sizeof(u64), 0,
                                 tp_la_show3);
                break;
        default:
                p = seq_open_tab(file, TPLA_SIZE, sizeof(u64), 0, tp_la_show);
        }
        if (!p)
                return -ENOMEM;

        t4_tp_read_la(adap, (u64 *)p->data, NULL);
        return 0;
}

static ssize_t tp_la_write(struct file *file, const char __user *buf,
                           size_t count, loff_t *pos)
{
        int err;
        char s[32];
        unsigned long val;
        size_t size = min(sizeof(s) - 1, count);
        struct adapter *adap = file_inode(file)->i_private;

        if (copy_from_user(s, buf, size))
                return -EFAULT;
        s[size] = '\0';
        err = kstrtoul(s, 0, &val);
        if (err)
                return err;
        if (val > 0xffff)
                return -EINVAL;
        adap->params.tp.la_mask = val << 16;
        t4_set_reg_field(adap, TP_DBG_LA_CONFIG_A, 0xffff0000U,
                         adap->params.tp.la_mask);
        return count;
}

static const struct file_operations tp_la_fops = {
        .owner   = THIS_MODULE,
        .open    = tp_la_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private,
        .write   = tp_la_write
};

static int ulprx_la_show(struct seq_file *seq, void *v, int idx)
{
        const u32 *p = v;

        if (v == SEQ_START_TOKEN)
                seq_puts(seq, "      Pcmd        Type   Message"
                         "                Data\n");
        else
                seq_printf(seq, "%08x%08x  %4x  %08x  %08x%08x%08x%08x\n",
                           p[1], p[0], p[2], p[3], p[7], p[6], p[5], p[4]);
        return 0;
}

static int ulprx_la_open(struct inode *inode, struct file *file)
{
        struct seq_tab *p;
        struct adapter *adap = inode->i_private;

        p = seq_open_tab(file, ULPRX_LA_SIZE, 8 * sizeof(u32), 1,
                         ulprx_la_show);
        if (!p)
                return -ENOMEM;

        t4_ulprx_read_la(adap, (u32 *)p->data);
        return 0;
}

static const struct file_operations ulprx_la_fops = {
        .owner   = THIS_MODULE,
        .open    = ulprx_la_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

/* Show the PM memory stats.  These stats include:
 *
 * TX:
 *   Read: memory read operation
 *   Write Bypass: cut-through
 *   Bypass + mem: cut-through and save copy
 *
 * RX:
 *   Read: memory read
 *   Write Bypass: cut-through
 *   Flush: payload trim or drop
 */
static int pm_stats_show(struct seq_file *seq, void *v)
{
        static const char * const tx_pm_stats[] = {
                "Read:", "Write bypass:", "Write mem:", "Bypass + mem:"
        };
        static const char * const rx_pm_stats[] = {
                "Read:", "Write bypass:", "Write mem:", "Flush:"
        };

        int i;
        u32 tx_cnt[T6_PM_NSTATS], rx_cnt[T6_PM_NSTATS];
        u64 tx_cyc[T6_PM_NSTATS], rx_cyc[T6_PM_NSTATS];
        struct adapter *adap = seq->private;

        t4_pmtx_get_stats(adap, tx_cnt, tx_cyc);
        t4_pmrx_get_stats(adap, rx_cnt, rx_cyc);

        seq_printf(seq, "%13s %10s  %20s\n", " ", "Tx pcmds", "Tx bytes");
        for (i = 0; i < PM_NSTATS - 1; i++)
                seq_printf(seq, "%-13s %10u  %20llu\n",
                           tx_pm_stats[i], tx_cnt[i], tx_cyc[i]);

        seq_printf(seq, "%13s %10s  %20s\n", " ", "Rx pcmds", "Rx bytes");
        for (i = 0; i < PM_NSTATS - 1; i++)
                seq_printf(seq, "%-13s %10u  %20llu\n",
                           rx_pm_stats[i], rx_cnt[i], rx_cyc[i]);

        if (CHELSIO_CHIP_VERSION(adap->params.chip) > CHELSIO_T5) {
                /* In T5 the granularity of the total wait is too fine.
                 * It is not useful as it reaches the max value too fast.
                 * Hence display this Input FIFO wait for T6 onwards.
                 */
                seq_printf(seq, "%13s %10s  %20s\n",
                           " ", "Total wait", "Total Occupancy");
                seq_printf(seq, "Tx FIFO wait  %10u  %20llu\n",
                           tx_cnt[i], tx_cyc[i]);
                seq_printf(seq, "Rx FIFO wait  %10u  %20llu\n",
                           rx_cnt[i], rx_cyc[i]);

                /* Skip index 6 as there is nothing useful ihere */
                i += 2;

                /* At index 7, a new stat for read latency (count, total wait)
                 * is added.
                 */
                seq_printf(seq, "%13s %10s  %20s\n",
                           " ", "Reads", "Total wait");
                seq_printf(seq, "Tx latency    %10u  %20llu\n",
                           tx_cnt[i], tx_cyc[i]);
                seq_printf(seq, "Rx latency    %10u  %20llu\n",
                           rx_cnt[i], rx_cyc[i]);
        }
        return 0;
}

static int pm_stats_open(struct inode *inode, struct file *file)
{
        return single_open(file, pm_stats_show, inode->i_private);
}

static ssize_t pm_stats_clear(struct file *file, const char __user *buf,
                              size_t count, loff_t *pos)
{
        struct adapter *adap = file_inode(file)->i_private;

        t4_write_reg(adap, PM_RX_STAT_CONFIG_A, 0);
        t4_write_reg(adap, PM_TX_STAT_CONFIG_A, 0);
        return count;
}

static const struct file_operations pm_stats_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = pm_stats_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = single_release,
        .write   = pm_stats_clear
};

static int tx_rate_show(struct seq_file *seq, void *v)
{
        u64 nrate[NCHAN], orate[NCHAN];
        struct adapter *adap = seq->private;

        t4_get_chan_txrate(adap, nrate, orate);
        if (adap->params.arch.nchan == NCHAN) {
                seq_puts(seq, "              channel 0   channel 1   "
                         "channel 2   channel 3\n");
                seq_printf(seq, "NIC B/s:     %10llu  %10llu  %10llu  %10llu\n",
                           (unsigned long long)nrate[0],
                           (unsigned long long)nrate[1],
                           (unsigned long long)nrate[2],
                           (unsigned long long)nrate[3]);
                seq_printf(seq, "Offload B/s: %10llu  %10llu  %10llu  %10llu\n",
                           (unsigned long long)orate[0],
                           (unsigned long long)orate[1],
                           (unsigned long long)orate[2],
                           (unsigned long long)orate[3]);
        } else {
                seq_puts(seq, "              channel 0   channel 1\n");
                seq_printf(seq, "NIC B/s:     %10llu  %10llu\n",
                           (unsigned long long)nrate[0],
                           (unsigned long long)nrate[1]);
                seq_printf(seq, "Offload B/s: %10llu  %10llu\n",
                           (unsigned long long)orate[0],
                           (unsigned long long)orate[1]);
        }
        return 0;
}
DEFINE_SHOW_ATTRIBUTE(tx_rate);

static int cctrl_tbl_show(struct seq_file *seq, void *v)
{
        static const char * const dec_fac[] = {
                "0.5", "0.5625", "0.625", "0.6875", "0.75", "0.8125", "0.875",
                "0.9375" };

        int i;
        u16 (*incr)[NCCTRL_WIN];
        struct adapter *adap = seq->private;

        incr = kmalloc_array(NMTUS, sizeof(*incr), GFP_KERNEL);
        if (!incr)
                return -ENOMEM;

        t4_read_cong_tbl(adap, incr);

        for (i = 0; i < NCCTRL_WIN; ++i) {
                seq_printf(seq, "%2d: %4u %4u %4u %4u %4u %4u %4u %4u\n", i,
                           incr[0][i], incr[1][i], incr[2][i], incr[3][i],
                           incr[4][i], incr[5][i], incr[6][i], incr[7][i]);
                seq_printf(seq, "%8u %4u %4u %4u %4u %4u %4u %4u %5u %s\n",
                           incr[8][i], incr[9][i], incr[10][i], incr[11][i],
                           incr[12][i], incr[13][i], incr[14][i], incr[15][i],
                           adap->params.a_wnd[i],
                           dec_fac[adap->params.b_wnd[i]]);
        }

        kfree(incr);
        return 0;
}
DEFINE_SHOW_ATTRIBUTE(cctrl_tbl);

/* Format a value in a unit that differs from the value's native unit by the
 * given factor.
 */
static char *unit_conv(char *buf, size_t len, unsigned int val,
                       unsigned int factor)
{
        unsigned int rem = val % factor;

        if (rem == 0) {
                snprintf(buf, len, "%u", val / factor);
        } else {
                while (rem % 10 == 0)
                        rem /= 10;
                snprintf(buf, len, "%u.%u", val / factor, rem);
        }
        return buf;
}

static int clk_show(struct seq_file *seq, void *v)
{
        char buf[32];
        struct adapter *adap = seq->private;
        unsigned int cclk_ps = 1000000000 / adap->params.vpd.cclk;  /* in ps */
        u32 res = t4_read_reg(adap, TP_TIMER_RESOLUTION_A);
        unsigned int tre = TIMERRESOLUTION_G(res);
        unsigned int dack_re = DELAYEDACKRESOLUTION_G(res);
        unsigned long long tp_tick_us = (cclk_ps << tre) / 1000000; /* in us */

        seq_printf(seq, "Core clock period: %s ns\n",
                   unit_conv(buf, sizeof(buf), cclk_ps, 1000));
        seq_printf(seq, "TP timer tick: %s us\n",
                   unit_conv(buf, sizeof(buf), (cclk_ps << tre), 1000000));
        seq_printf(seq, "TCP timestamp tick: %s us\n",
                   unit_conv(buf, sizeof(buf),
                             (cclk_ps << TIMESTAMPRESOLUTION_G(res)), 1000000));
        seq_printf(seq, "DACK tick: %s us\n",
                   unit_conv(buf, sizeof(buf), (cclk_ps << dack_re), 1000000));
        seq_printf(seq, "DACK timer: %u us\n",
                   ((cclk_ps << dack_re) / 1000000) *
                   t4_read_reg(adap, TP_DACK_TIMER_A));
        seq_printf(seq, "Retransmit min: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_RXT_MIN_A));
        seq_printf(seq, "Retransmit max: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_RXT_MAX_A));
        seq_printf(seq, "Persist timer min: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_PERS_MIN_A));
        seq_printf(seq, "Persist timer max: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_PERS_MAX_A));
        seq_printf(seq, "Keepalive idle timer: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_KEEP_IDLE_A));
        seq_printf(seq, "Keepalive interval: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_KEEP_INTVL_A));
        seq_printf(seq, "Initial SRTT: %llu us\n",
                   tp_tick_us * INITSRTT_G(t4_read_reg(adap, TP_INIT_SRTT_A)));
        seq_printf(seq, "FINWAIT2 timer: %llu us\n",
                   tp_tick_us * t4_read_reg(adap, TP_FINWAIT2_TIMER_A));

        return 0;
}
DEFINE_SHOW_ATTRIBUTE(clk);

/* Firmware Device Log dump. */
static const char * const devlog_level_strings[] = {
        [FW_DEVLOG_LEVEL_EMERG]         = "EMERG",
        [FW_DEVLOG_LEVEL_CRIT]          = "CRIT",
        [FW_DEVLOG_LEVEL_ERR]           = "ERR",
        [FW_DEVLOG_LEVEL_NOTICE]        = "NOTICE",
        [FW_DEVLOG_LEVEL_INFO]          = "INFO",
        [FW_DEVLOG_LEVEL_DEBUG]         = "DEBUG"
};

static const char * const devlog_facility_strings[] = {
        [FW_DEVLOG_FACILITY_CORE]       = "CORE",
        [FW_DEVLOG_FACILITY_CF]         = "CF",
        [FW_DEVLOG_FACILITY_SCHED]      = "SCHED",
        [FW_DEVLOG_FACILITY_TIMER]      = "TIMER",
        [FW_DEVLOG_FACILITY_RES]        = "RES",
        [FW_DEVLOG_FACILITY_HW]         = "HW",
        [FW_DEVLOG_FACILITY_FLR]        = "FLR",
        [FW_DEVLOG_FACILITY_DMAQ]       = "DMAQ",
        [FW_DEVLOG_FACILITY_PHY]        = "PHY",
        [FW_DEVLOG_FACILITY_MAC]        = "MAC",
        [FW_DEVLOG_FACILITY_PORT]       = "PORT",
        [FW_DEVLOG_FACILITY_VI]         = "VI",
        [FW_DEVLOG_FACILITY_FILTER]     = "FILTER",
        [FW_DEVLOG_FACILITY_ACL]        = "ACL",
        [FW_DEVLOG_FACILITY_TM]         = "TM",
        [FW_DEVLOG_FACILITY_QFC]        = "QFC",
        [FW_DEVLOG_FACILITY_DCB]        = "DCB",
        [FW_DEVLOG_FACILITY_ETH]        = "ETH",
        [FW_DEVLOG_FACILITY_OFLD]       = "OFLD",
        [FW_DEVLOG_FACILITY_RI]         = "RI",
        [FW_DEVLOG_FACILITY_ISCSI]      = "ISCSI",
        [FW_DEVLOG_FACILITY_FCOE]       = "FCOE",
        [FW_DEVLOG_FACILITY_FOISCSI]    = "FOISCSI",
        [FW_DEVLOG_FACILITY_FOFCOE]     = "FOFCOE"
};

/* Information gathered by Device Log Open routine for the display routine.
 */
struct devlog_info {
        unsigned int nentries;          /* number of entries in log[] */
        unsigned int first;             /* first [temporal] entry in log[] */
        struct fw_devlog_e log[];       /* Firmware Device Log */
};

/* Dump a Firmaware Device Log entry.
 */
static int devlog_show(struct seq_file *seq, void *v)
{
        if (v == SEQ_START_TOKEN)
                seq_printf(seq, "%10s  %15s  %8s  %8s  %s\n",
                           "Seq#", "Tstamp", "Level", "Facility", "Message");
        else {
                struct devlog_info *dinfo = seq->private;
                int fidx = (uintptr_t)v - 2;

                unsigned long index;
                struct fw_devlog_e *e;

                /* Get a pointer to the log entry to display.  Skip unused log
                 * entries.
                 */
                index = dinfo->first + fidx;
                if (index >= dinfo->nentries)
                        index -= dinfo->nentries;
                e = &dinfo->log[index];
                if (e->timestamp == 0)
                        return 0;

                /* Print the message.  This depends on the firmware using
                 * exactly the same formating strings as the kernel so we may
                 * eventually have to put a format interpreter in here ...
                 */
                seq_printf(seq, "%10d  %15llu  %8s  %8s  ",
                           be32_to_cpu(e->seqno),
                           be64_to_cpu(e->timestamp),
                           (e->level < ARRAY_SIZE(devlog_level_strings)
                            ? devlog_level_strings[e->level]
                            : "UNKNOWN"),
                           (e->facility < ARRAY_SIZE(devlog_facility_strings)
                            ? devlog_facility_strings[e->facility]
                            : "UNKNOWN"));
                seq_printf(seq, e->fmt,
                           be32_to_cpu(e->params[0]),
                           be32_to_cpu(e->params[1]),
                           be32_to_cpu(e->params[2]),
                           be32_to_cpu(e->params[3]),
                           be32_to_cpu(e->params[4]),
                           be32_to_cpu(e->params[5]),
                           be32_to_cpu(e->params[6]),
                           be32_to_cpu(e->params[7]));
        }
        return 0;
}

/* Sequential File Operations for Device Log.
 */
static inline void *devlog_get_idx(struct devlog_info *dinfo, loff_t pos)
{
        if (pos > dinfo->nentries)
                return NULL;

        return (void *)(uintptr_t)(pos + 1);
}

static void *devlog_start(struct seq_file *seq, loff_t *pos)
{
        struct devlog_info *dinfo = seq->private;

        return (*pos
                ? devlog_get_idx(dinfo, *pos)
                : SEQ_START_TOKEN);
}

static void *devlog_next(struct seq_file *seq, void *v, loff_t *pos)
{
        struct devlog_info *dinfo = seq->private;

        (*pos)++;
        return devlog_get_idx(dinfo, *pos);
}

static void devlog_stop(struct seq_file *seq, void *v)
{
}

static const struct seq_operations devlog_seq_ops = {
        .start = devlog_start,
        .next  = devlog_next,
        .stop  = devlog_stop,
        .show  = devlog_show
};

/* Set up for reading the firmware's device log.  We read the entire log here
 * and then display it incrementally in devlog_show().
 */
static int devlog_open(struct inode *inode, struct file *file)
{
        struct adapter *adap = inode->i_private;
        struct devlog_params *dparams = &adap->params.devlog;
        struct devlog_info *dinfo;
        unsigned int index;
        u32 fseqno;
        int ret;

        /* If we don't know where the log is we can't do anything.
         */
        if (dparams->start == 0)
                return -ENXIO;

        /* Allocate the space to read in the firmware's device log and set up
         * for the iterated call to our display function.
         */
        dinfo = __seq_open_private(file, &devlog_seq_ops,
                                   sizeof(*dinfo) + dparams->size);
        if (!dinfo)
                return -ENOMEM;

        /* Record the basic log buffer information and read in the raw log.
         */
        dinfo->nentries = (dparams->size / sizeof(struct fw_devlog_e));
        dinfo->first = 0;
        spin_lock(&adap->win0_lock);
        ret = t4_memory_rw(adap, adap->params.drv_memwin, dparams->memtype,
                           dparams->start, dparams->size, (__be32 *)dinfo->log,
                           T4_MEMORY_READ);
        spin_unlock(&adap->win0_lock);
        if (ret) {
                seq_release_private(inode, file);
                return ret;
        }

        /* Find the earliest (lowest Sequence Number) log entry in the
         * circular Device Log.
         */
        for (fseqno = ~((u32)0), index = 0; index < dinfo->nentries; index++) {
                struct fw_devlog_e *e = &dinfo->log[index];
                __u32 seqno;

                if (e->timestamp == 0)
                        continue;

                seqno = be32_to_cpu(e->seqno);
                if (seqno < fseqno) {
                        fseqno = seqno;
                        dinfo->first = index;
                }
        }
        return 0;
}

static const struct file_operations devlog_fops = {
        .owner   = THIS_MODULE,
        .open    = devlog_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

/* Show Firmware Mailbox Command/Reply Log
 *
 * Note that we don't do any locking when dumping the Firmware Mailbox Log so
 * it's possible that we can catch things during a log update and therefore
 * see partially corrupted log entries.  But it's probably Good Enough(tm).
 * If we ever decide that we want to make sure that we're dumping a coherent
 * log, we'd need to perform locking in the mailbox logging and in
 * mboxlog_open() where we'd need to grab the entire mailbox log in one go
 * like we do for the Firmware Device Log.
 */
static int mboxlog_show(struct seq_file *seq, void *v)
{
        struct adapter *adapter = seq->private;
        struct mbox_cmd_log *log = adapter->mbox_log;
        struct mbox_cmd *entry;
        int entry_idx, i;

        if (v == SEQ_START_TOKEN) {
                seq_printf(seq,
                           "%10s  %15s  %5s  %5s  %s\n",
                           "Seq#", "Tstamp", "Atime", "Etime",
                           "Command/Reply");
                return 0;
        }

        entry_idx = log->cursor + ((uintptr_t)v - 2);
        if (entry_idx >= log->size)
                entry_idx -= log->size;
        entry = mbox_cmd_log_entry(log, entry_idx);

        /* skip over unused entries */
        if (entry->timestamp == 0)
                return 0;

        seq_printf(seq, "%10u  %15llu  %5d  %5d",
                   entry->seqno, entry->timestamp,
                   entry->access, entry->execute);
        for (i = 0; i < MBOX_LEN / 8; i++) {
                u64 flit = entry->cmd[i];
                u32 hi = (u32)(flit >> 32);
                u32 lo = (u32)flit;

                seq_printf(seq, "  %08x %08x", hi, lo);
        }
        seq_puts(seq, "\n");
        return 0;
}

static inline void *mboxlog_get_idx(struct seq_file *seq, loff_t pos)
{
        struct adapter *adapter = seq->private;
        struct mbox_cmd_log *log = adapter->mbox_log;

        return ((pos <= log->size) ? (void *)(uintptr_t)(pos + 1) : NULL);
}

static void *mboxlog_start(struct seq_file *seq, loff_t *pos)
{
        return *pos ? mboxlog_get_idx(seq, *pos) : SEQ_START_TOKEN;
}

static void *mboxlog_next(struct seq_file *seq, void *v, loff_t *pos)
{
        ++*pos;
        return mboxlog_get_idx(seq, *pos);
}

static void mboxlog_stop(struct seq_file *seq, void *v)
{
}

static const struct seq_operations mboxlog_seq_ops = {
        .start = mboxlog_start,
        .next  = mboxlog_next,
        .stop  = mboxlog_stop,
        .show  = mboxlog_show
};

static int mboxlog_open(struct inode *inode, struct file *file)
{
        int res = seq_open(file, &mboxlog_seq_ops);

        if (!res) {
                struct seq_file *seq = file->private_data;

                seq->private = inode->i_private;
        }
        return res;
}

static const struct file_operations mboxlog_fops = {
        .owner   = THIS_MODULE,
        .open    = mboxlog_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release,
};

static int mbox_show(struct seq_file *seq, void *v)
{
        static const char * const owner[] = { "none", "FW", "driver",
                                              "unknown", "<unread>" };

        int i;
        unsigned int mbox = (uintptr_t)seq->private & 7;
        struct adapter *adap = seq->private - mbox;
        void __iomem *addr = adap->regs + PF_REG(mbox, CIM_PF_MAILBOX_DATA_A);

        /* For T4 we don't have a shadow copy of the Mailbox Control register.
         * And since reading that real register causes a side effect of
         * granting ownership, we're best of simply not reading it at all.
         */
        if (is_t4(adap->params.chip)) {
                i = 4; /* index of "<unread>" */
        } else {
                unsigned int ctrl_reg = CIM_PF_MAILBOX_CTRL_SHADOW_COPY_A;
                void __iomem *ctrl = adap->regs + PF_REG(mbox, ctrl_reg);

                i = MBOWNER_G(readl(ctrl));
        }

        seq_printf(seq, "mailbox owned by %s\n\n", owner[i]);

        for (i = 0; i < MBOX_LEN; i += 8)
                seq_printf(seq, "%016llx\n",
                           (unsigned long long)readq(addr + i));
        return 0;
}

static int mbox_open(struct inode *inode, struct file *file)
{
        return single_open(file, mbox_show, inode->i_private);
}

static ssize_t mbox_write(struct file *file, const char __user *buf,
                          size_t count, loff_t *pos)
{
        int i;
        char c = '\n', s[256];
        unsigned long long data[8];
        const struct inode *ino;
        unsigned int mbox;
        struct adapter *adap;
        void __iomem *addr;
        void __iomem *ctrl;

        if (count > sizeof(s) - 1 || !count)
                return -EINVAL;
        if (copy_from_user(s, buf, count))
                return -EFAULT;
        s[count] = '\0';

        if (sscanf(s, "%llx %llx %llx %llx %llx %llx %llx %llx%c", &data[0],
                   &data[1], &data[2], &data[3], &data[4], &data[5], &data[6],
                   &data[7], &c) < 8 || c != '\n')
                return -EINVAL;

        ino = file_inode(file);
        mbox = (uintptr_t)ino->i_private & 7;
        adap = ino->i_private - mbox;
        addr = adap->regs + PF_REG(mbox, CIM_PF_MAILBOX_DATA_A);
        ctrl = addr + MBOX_LEN;

        if (MBOWNER_G(readl(ctrl)) != X_MBOWNER_PL)
                return -EBUSY;

        for (i = 0; i < 8; i++)
                writeq(data[i], addr + 8 * i);

        writel(MBMSGVALID_F | MBOWNER_V(X_MBOWNER_FW), ctrl);
        return count;
}

static const struct file_operations mbox_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = mbox_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = single_release,
        .write   = mbox_write
};

static int mps_trc_show(struct seq_file *seq, void *v)
{
        int enabled, i;
        struct trace_params tp;
        unsigned int trcidx = (uintptr_t)seq->private & 3;
        struct adapter *adap = seq->private - trcidx;

        t4_get_trace_filter(adap, &tp, trcidx, &enabled);
        if (!enabled) {
                seq_puts(seq, "tracer is disabled\n");
                return 0;
        }

        if (tp.skip_ofst * 8 >= TRACE_LEN) {
                dev_err(adap->pdev_dev, "illegal trace pattern skip offset\n");
                return -EINVAL;
        }
        if (tp.port < 8) {
                i = adap->chan_map[tp.port & 3];
                if (i >= MAX_NPORTS) {
                        dev_err(adap->pdev_dev, "tracer %u is assigned "
                                "to non-existing port\n", trcidx);
                        return -EINVAL;
                }
                seq_printf(seq, "tracer is capturing %s %s, ",
                           adap->port[i]->name, tp.port < 4 ? "Rx" : "Tx");
        } else
                seq_printf(seq, "tracer is capturing loopback %d, ",
                           tp.port - 8);
        seq_printf(seq, "snap length: %u, min length: %u\n", tp.snap_len,
                   tp.min_len);
        seq_printf(seq, "packets captured %smatch filter\n",
                   tp.invert ? "do not " : "");

        if (tp.skip_ofst) {
                seq_puts(seq, "filter pattern: ");
                for (i = 0; i < tp.skip_ofst * 2; i += 2)
                        seq_printf(seq, "%08x%08x", tp.data[i], tp.data[i + 1]);
                seq_putc(seq, '/');
                for (i = 0; i < tp.skip_ofst * 2; i += 2)
                        seq_printf(seq, "%08x%08x", tp.mask[i], tp.mask[i + 1]);
                seq_puts(seq, "@0\n");
        }

        seq_puts(seq, "filter pattern: ");
        for (i = tp.skip_ofst * 2; i < TRACE_LEN / 4; i += 2)
                seq_printf(seq, "%08x%08x", tp.data[i], tp.data[i + 1]);
        seq_putc(seq, '/');
        for (i = tp.skip_ofst * 2; i < TRACE_LEN / 4; i += 2)
                seq_printf(seq, "%08x%08x", tp.mask[i], tp.mask[i + 1]);
        seq_printf(seq, "@%u\n", (tp.skip_ofst + tp.skip_len) * 8);
        return 0;
}

static int mps_trc_open(struct inode *inode, struct file *file)
{
        return single_open(file, mps_trc_show, inode->i_private);
}

static unsigned int xdigit2int(unsigned char c)
{
        return isdigit(c) ? c - '0' : tolower(c) - 'a' + 10;
}

#define TRC_PORT_NONE 0xff
#define TRC_RSS_ENABLE 0x33
#define TRC_RSS_DISABLE 0x13

/* Set an MPS trace filter.  Syntax is:
 *
 * disable
 *
 * to disable tracing, or
 *
 * interface qid=<qid no> [snaplen=<val>] [minlen=<val>] [not] [<pattern>]...
 *
 * where interface is one of rxN, txN, or loopbackN, N = 0..3, qid can be one
 * of the NIC's response qid obtained from sge_qinfo and pattern has the form
 *
 * <pattern data>[/<pattern mask>][@<anchor>]
 *
 * Up to 2 filter patterns can be specified.  If 2 are supplied the first one
 * must be anchored at 0.  An omitted mask is taken as a mask of 1s, an omitted
 * anchor is taken as 0.
 */
static ssize_t mps_trc_write(struct file *file, const char __user *buf,
                             size_t count, loff_t *pos)
{
        int i, enable, ret;
        u32 *data, *mask;
        struct trace_params tp;
        const struct inode *ino;
        unsigned int trcidx;
        char *s, *p, *word, *end;
        struct adapter *adap;
        u32 j;

        ino = file_inode(file);
        trcidx = (uintptr_t)ino->i_private & 3;
        adap = ino->i_private - trcidx;

        /* Don't accept input more than 1K, can't be anything valid except lots
         * of whitespace.  Well, use less.
         */
        if (count > 1024)
                return -EFBIG;
        p = s = kzalloc(count + 1, GFP_USER);
        if (!s)
                return -ENOMEM;
        if (copy_from_user(s, buf, count)) {
                count = -EFAULT;
                goto out;
        }

        if (s[count - 1] == '\n')
                s[count - 1] = '\0';

        enable = strcmp("disable", s) != 0;
        if (!enable)
                goto apply;

        /* enable or disable trace multi rss filter */
        if (adap->trace_rss)
                t4_write_reg(adap, MPS_TRC_CFG_A, TRC_RSS_ENABLE);
        else
                t4_write_reg(adap, MPS_TRC_CFG_A, TRC_RSS_DISABLE);

        memset(&tp, 0, sizeof(tp));
        tp.port = TRC_PORT_NONE;
        i = 0;  /* counts pattern nibbles */

        while (p) {
                while (isspace(*p))
                        p++;
                word = strsep(&p, " ");
                if (!*word)
                        break;

                if (!strncmp(word, "qid=", 4)) {
                        end = (char *)word + 4;
                        ret = kstrtouint(end, 10, &j);
                        if (ret)
                                goto out;
                        if (!adap->trace_rss) {
                                t4_write_reg(adap, MPS_T5_TRC_RSS_CONTROL_A, j);
                                continue;
                        }

                        switch (trcidx) {
                        case 0:
                                t4_write_reg(adap, MPS_TRC_RSS_CONTROL_A, j);
                                break;
                        case 1:
                                t4_write_reg(adap,
                                             MPS_TRC_FILTER1_RSS_CONTROL_A, j);
                                break;
                        case 2:
                                t4_write_reg(adap,
                                             MPS_TRC_FILTER2_RSS_CONTROL_A, j);
                                break;
                        case 3:
                                t4_write_reg(adap,
                                             MPS_TRC_FILTER3_RSS_CONTROL_A, j);
                                break;
                        }
                        continue;
                }
                if (!strncmp(word, "snaplen=", 8)) {
                        end = (char *)word + 8;
                        ret = kstrtouint(end, 10, &j);
                        if (ret || j > 9600) {
inval:                          count = -EINVAL;
                                goto out;
                        }
                        tp.snap_len = j;
                        continue;
                }
                if (!strncmp(word, "minlen=", 7)) {
                        end = (char *)word + 7;
                        ret = kstrtouint(end, 10, &j);
                        if (ret || j > TFMINPKTSIZE_M)
                                goto inval;
                        tp.min_len = j;
                        continue;
                }
                if (!strcmp(word, "not")) {
                        tp.invert = !tp.invert;
                        continue;
                }
                if (!strncmp(word, "loopback", 8) && tp.port == TRC_PORT_NONE) {
                        if (word[8] < '0' || word[8] > '3' || word[9])
                                goto inval;
                        tp.port = word[8] - '0' + 8;
                        continue;
                }
                if (!strncmp(word, "tx", 2) && tp.port == TRC_PORT_NONE) {
                        if (word[2] < '0' || word[2] > '3' || word[3])
                                goto inval;
                        tp.port = word[2] - '0' + 4;
                        if (adap->chan_map[tp.port & 3] >= MAX_NPORTS)
                                goto inval;
                        continue;
                }
                if (!strncmp(word, "rx", 2) && tp.port == TRC_PORT_NONE) {
                        if (word[2] < '0' || word[2] > '3' || word[3])
                                goto inval;
                        tp.port = word[2] - '0';
                        if (adap->chan_map[tp.port] >= MAX_NPORTS)
                                goto inval;
                        continue;
                }
                if (!isxdigit(*word))
                        goto inval;

                /* we have found a trace pattern */
                if (i) {                            /* split pattern */
                        if (tp.skip_len)            /* too many splits */
                                goto inval;
                        tp.skip_ofst = i / 16;
                }

                data = &tp.data[i / 8];
                mask = &tp.mask[i / 8];
                j = i;

                while (isxdigit(*word)) {
                        if (i >= TRACE_LEN * 2) {
                                count = -EFBIG;
                                goto out;
                        }
                        *data = (*data << 4) + xdigit2int(*word++);
                        if (++i % 8 == 0)
                                data++;
                }
                if (*word == '/') {
                        word++;
                        while (isxdigit(*word)) {
                                if (j >= i)         /* mask longer than data */
                                        goto inval;
                                *mask = (*mask << 4) + xdigit2int(*word++);
                                if (++j % 8 == 0)
                                        mask++;
                        }
                        if (i != j)                 /* mask shorter than data */
                                goto inval;
                } else {                            /* no mask, use all 1s */
                        for ( ; i - j >= 8; j += 8)
                                *mask++ = 0xffffffff;
                        if (i % 8)
                                *mask = (1 << (i % 8) * 4) - 1;
                }
                if (*word == '@') {
                        end = (char *)word + 1;
                        ret = kstrtouint(end, 10, &j);
                        if (*end && *end != '\n')
                                goto inval;
                        if (j & 7)          /* doesn't start at multiple of 8 */
                                goto inval;
                        j /= 8;
                        if (j < tp.skip_ofst)     /* overlaps earlier pattern */
                                goto inval;
                        if (j - tp.skip_ofst > 31)            /* skip too big */
                                goto inval;
                        tp.skip_len = j - tp.skip_ofst;
                }
                if (i % 8) {
                        *data <<= (8 - i % 8) * 4;
                        *mask <<= (8 - i % 8) * 4;
                        i = (i + 15) & ~15;         /* 8-byte align */
                }
        }

        if (tp.port == TRC_PORT_NONE)
                goto inval;

apply:
        i = t4_set_trace_filter(adap, &tp, trcidx, enable);
        if (i)
                count = i;
out:
        kfree(s);
        return count;
}

static const struct file_operations mps_trc_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = mps_trc_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = single_release,
        .write   = mps_trc_write
};

static ssize_t flash_read(struct file *file, char __user *buf, size_t count,
                          loff_t *ppos)
{
        loff_t pos = *ppos;
        loff_t avail = file_inode(file)->i_size;
        struct adapter *adap = file->private_data;

        if (pos < 0)
                return -EINVAL;
        if (pos >= avail)
                return 0;
        if (count > avail - pos)
                count = avail - pos;

        while (count) {
                size_t len;
                int ret, ofst;
                u8 data[256];

                ofst = pos & 3;
                len = min(count + ofst, sizeof(data));
                ret = t4_read_flash(adap, pos - ofst, (len + 3) / 4,
                                    (u32 *)data, 1);
                if (ret)
                        return ret;

                len -= ofst;
                if (copy_to_user(buf, data + ofst, len))
                        return -EFAULT;

                buf += len;
                pos += len;
                count -= len;
        }
        count = pos - *ppos;
        *ppos = pos;
        return count;
}

static const struct file_operations flash_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = mem_open,
        .read    = flash_read,
        .llseek  = default_llseek,
};

static inline void tcamxy2valmask(u64 x, u64 y, u8 *addr, u64 *mask)
{
        *mask = x | y;
        y = (__force u64)cpu_to_be64(y);
        memcpy(addr, (char *)&y + 2, ETH_ALEN);
}

static int mps_tcam_show(struct seq_file *seq, void *v)
{
        struct adapter *adap = seq->private;
        unsigned int chip_ver = CHELSIO_CHIP_VERSION(adap->params.chip);
        if (v == SEQ_START_TOKEN) {
                if (chip_ver > CHELSIO_T5) {
                        seq_puts(seq, "Idx  Ethernet address     Mask     "
                                 "  VNI   Mask   IVLAN Vld "
                                 "DIP_Hit   Lookup  Port "
                                 "Vld Ports PF  VF                           "
                                 "Replication                                "
                                 "    P0 P1 P2 P3  ML\n");
                } else {
                        if (adap->params.arch.mps_rplc_size > 128)
                                seq_puts(seq, "Idx  Ethernet address     Mask     "
                                         "Vld Ports PF  VF                           "
                                         "Replication                                "
                                         "    P0 P1 P2 P3  ML\n");
                        else
                                seq_puts(seq, "Idx  Ethernet address     Mask     "
                                         "Vld Ports PF  VF              Replication"
                                         "               P0 P1 P2 P3  ML\n");
                }
        } else {
                u64 mask;
                u8 addr[ETH_ALEN];
                bool replicate, dip_hit = false, vlan_vld = false;
                unsigned int idx = (uintptr_t)v - 2;
                u64 tcamy, tcamx, val;
                u32 cls_lo, cls_hi, ctl, data2, vnix = 0, vniy = 0;
                u32 rplc[8] = {0};
                u8 lookup_type = 0, port_num = 0;
                u16 ivlan = 0;

                if (chip_ver > CHELSIO_T5) {
                        /* CtlCmdType - 0: Read, 1: Write
                         * CtlTcamSel - 0: TCAM0, 1: TCAM1
                         * CtlXYBitSel- 0: Y bit, 1: X bit
                         */

                        /* Read tcamy */
                        ctl = CTLCMDTYPE_V(0) | CTLXYBITSEL_V(0);
                        if (idx < 256)
                                ctl |= CTLTCAMINDEX_V(idx) | CTLTCAMSEL_V(0);
                        else
                                ctl |= CTLTCAMINDEX_V(idx - 256) |
                                       CTLTCAMSEL_V(1);
                        t4_write_reg(adap, MPS_CLS_TCAM_DATA2_CTL_A, ctl);
                        val = t4_read_reg(adap, MPS_CLS_TCAM_DATA1_A);
                        tcamy = DMACH_G(val) << 32;
                        tcamy |= t4_read_reg(adap, MPS_CLS_TCAM_DATA0_A);
                        data2 = t4_read_reg(adap, MPS_CLS_TCAM_DATA2_CTL_A);
                        lookup_type = DATALKPTYPE_G(data2);
                        /* 0 - Outer header, 1 - Inner header
                         * [71:48] bit locations are overloaded for
                         * outer vs. inner lookup types.
                         */
                        if (lookup_type && (lookup_type != DATALKPTYPE_M)) {
                                /* Inner header VNI */
                                vniy = (data2 & DATAVIDH2_F) |
                                       (DATAVIDH1_G(data2) << 16) | VIDL_G(val);
                                dip_hit = data2 & DATADIPHIT_F;
                        } else {
                                vlan_vld = data2 & DATAVIDH2_F;
                                ivlan = VIDL_G(val);
                        }
                        port_num = DATAPORTNUM_G(data2);

                        /* Read tcamx. Change the control param */
                        vnix = 0;
                        ctl |= CTLXYBITSEL_V(1);
                        t4_write_reg(adap, MPS_CLS_TCAM_DATA2_CTL_A, ctl);
                        val = t4_read_reg(adap, MPS_CLS_TCAM_DATA1_A);
                        tcamx = DMACH_G(val) << 32;
                        tcamx |= t4_read_reg(adap, MPS_CLS_TCAM_DATA0_A);
                        data2 = t4_read_reg(adap, MPS_CLS_TCAM_DATA2_CTL_A);
                        if (lookup_type && (lookup_type != DATALKPTYPE_M)) {
                                /* Inner header VNI mask */
                                vnix = (data2 & DATAVIDH2_F) |
                                       (DATAVIDH1_G(data2) << 16) | VIDL_G(val);
                        }
                } else {
                        tcamy = t4_read_reg64(adap, MPS_CLS_TCAM_Y_L(idx));
                        tcamx = t4_read_reg64(adap, MPS_CLS_TCAM_X_L(idx));
                }

                cls_lo = t4_read_reg(adap, MPS_CLS_SRAM_L(idx));
                cls_hi = t4_read_reg(adap, MPS_CLS_SRAM_H(idx));

                if (tcamx & tcamy) {
                        seq_printf(seq, "%3u         -\n", idx);
                        goto out;
                }

                rplc[0] = rplc[1] = rplc[2] = rplc[3] = 0;
                if (chip_ver > CHELSIO_T5)
                        replicate = (cls_lo & T6_REPLICATE_F);
                else
                        replicate = (cls_lo & REPLICATE_F);

                if (replicate) {
                        struct fw_ldst_cmd ldst_cmd;
                        int ret;
                        struct fw_ldst_mps_rplc mps_rplc;
                        u32 ldst_addrspc;

                        memset(&ldst_cmd, 0, sizeof(ldst_cmd));
                        ldst_addrspc =
                                FW_LDST_CMD_ADDRSPACE_V(FW_LDST_ADDRSPC_MPS);
                        ldst_cmd.op_to_addrspace =
                                htonl(FW_CMD_OP_V(FW_LDST_CMD) |
                                      FW_CMD_REQUEST_F |
                                      FW_CMD_READ_F |
                                      ldst_addrspc);
                        ldst_cmd.cycles_to_len16 = htonl(FW_LEN16(ldst_cmd));
                        ldst_cmd.u.mps.rplc.fid_idx =
                                htons(FW_LDST_CMD_FID_V(FW_LDST_MPS_RPLC) |
                                      FW_LDST_CMD_IDX_V(idx));
                        ret = t4_wr_mbox(adap, adap->mbox, &ldst_cmd,
                                         sizeof(ldst_cmd), &ldst_cmd);
                        if (ret)
                                dev_warn(adap->pdev_dev, "Can't read MPS "
                                         "replication map for idx %d: %d\n",
                                         idx, -ret);
                        else {
                                mps_rplc = ldst_cmd.u.mps.rplc;
                                rplc[0] = ntohl(mps_rplc.rplc31_0);
                                rplc[1] = ntohl(mps_rplc.rplc63_32);
                                rplc[2] = ntohl(mps_rplc.rplc95_64);
                                rplc[3] = ntohl(mps_rplc.rplc127_96);
                                if (adap->params.arch.mps_rplc_size > 128) {
                                        rplc[4] = ntohl(mps_rplc.rplc159_128);
                                        rplc[5] = ntohl(mps_rplc.rplc191_160);
                                        rplc[6] = ntohl(mps_rplc.rplc223_192);
                                        rplc[7] = ntohl(mps_rplc.rplc255_224);
                                }
                        }
                }

                tcamxy2valmask(tcamx, tcamy, addr, &mask);
                if (chip_ver > CHELSIO_T5) {
                        /* Inner header lookup */
                        if (lookup_type && (lookup_type != DATALKPTYPE_M)) {
                                seq_printf(seq,
                                           "%3u %pM %012llx %06x %06x    -    -   %3c      'I'  %4x   %3c   %#x%4u%4d",
                                           idx, addr,
                                           (unsigned long long)mask,
                                           vniy, (vnix | vniy),
                                           dip_hit ? 'Y' : 'N',
                                           port_num,
                                           (cls_lo & T6_SRAM_VLD_F) ? 'Y' : 'N',
                                           PORTMAP_G(cls_hi),
                                           T6_PF_G(cls_lo),
                                           (cls_lo & T6_VF_VALID_F) ?
                                           T6_VF_G(cls_lo) : -1);
                        } else {
                                seq_printf(seq,
                                           "%3u %pM %012llx    -       -   ",
                                           idx, addr,
                                           (unsigned long long)mask);

                                if (vlan_vld)
                                        seq_printf(seq, "%4u   Y     ", ivlan);
                                else
                                        seq_puts(seq, "  -    N     ");

                                seq_printf(seq,
                                           "-      %3c  %4x   %3c   %#x%4u%4d",
                                           lookup_type ? 'I' : 'O', port_num,
                                           (cls_lo & T6_SRAM_VLD_F) ? 'Y' : 'N',
                                           PORTMAP_G(cls_hi),
                                           T6_PF_G(cls_lo),
                                           (cls_lo & T6_VF_VALID_F) ?
                                           T6_VF_G(cls_lo) : -1);
                        }
                } else
                        seq_printf(seq, "%3u %pM %012llx%3c   %#x%4u%4d",
                                   idx, addr, (unsigned long long)mask,
                                   (cls_lo & SRAM_VLD_F) ? 'Y' : 'N',
                                   PORTMAP_G(cls_hi),
                                   PF_G(cls_lo),
                                   (cls_lo & VF_VALID_F) ? VF_G(cls_lo) : -1);

                if (replicate) {
                        if (adap->params.arch.mps_rplc_size > 128)
                                seq_printf(seq, " %08x %08x %08x %08x "
                                           "%08x %08x %08x %08x",
                                           rplc[7], rplc[6], rplc[5], rplc[4],
                                           rplc[3], rplc[2], rplc[1], rplc[0]);
                        else
                                seq_printf(seq, " %08x %08x %08x %08x",
                                           rplc[3], rplc[2], rplc[1], rplc[0]);
                } else {
                        if (adap->params.arch.mps_rplc_size > 128)
                                seq_printf(seq, "%72c", ' ');
                        else
                                seq_printf(seq, "%36c", ' ');
                }

                if (chip_ver > CHELSIO_T5)
                        seq_printf(seq, "%4u%3u%3u%3u %#x\n",
                                   T6_SRAM_PRIO0_G(cls_lo),
                                   T6_SRAM_PRIO1_G(cls_lo),
                                   T6_SRAM_PRIO2_G(cls_lo),
                                   T6_SRAM_PRIO3_G(cls_lo),
                                   (cls_lo >> T6_MULTILISTEN0_S) & 0xf);
                else
                        seq_printf(seq, "%4u%3u%3u%3u %#x\n",
                                   SRAM_PRIO0_G(cls_lo), SRAM_PRIO1_G(cls_lo),
                                   SRAM_PRIO2_G(cls_lo), SRAM_PRIO3_G(cls_lo),
                                   (cls_lo >> MULTILISTEN0_S) & 0xf);
        }
out:    return 0;
}

static inline void *mps_tcam_get_idx(struct seq_file *seq, loff_t pos)
{
        struct adapter *adap = seq->private;
        int max_mac_addr = is_t4(adap->params.chip) ?
                                NUM_MPS_CLS_SRAM_L_INSTANCES :
                                NUM_MPS_T5_CLS_SRAM_L_INSTANCES;
        return ((pos <= max_mac_addr) ? (void *)(uintptr_t)(pos + 1) : NULL);
}

static void *mps_tcam_start(struct seq_file *seq, loff_t *pos)
{
        return *pos ? mps_tcam_get_idx(seq, *pos) : SEQ_START_TOKEN;
}

static void *mps_tcam_next(struct seq_file *seq, void *v, loff_t *pos)
{
        ++*pos;
        return mps_tcam_get_idx(seq, *pos);
}

static void mps_tcam_stop(struct seq_file *seq, void *v)
{
}

static const struct seq_operations mps_tcam_seq_ops = {
        .start = mps_tcam_start,
        .next  = mps_tcam_next,
        .stop  = mps_tcam_stop,
        .show  = mps_tcam_show
};

static int mps_tcam_open(struct inode *inode, struct file *file)
{
        int res = seq_open(file, &mps_tcam_seq_ops);

        if (!res) {
                struct seq_file *seq = file->private_data;

                seq->private = inode->i_private;
        }
        return res;
}

static const struct file_operations mps_tcam_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = mps_tcam_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release,
};

/* Display various sensor information.
 */
static int sensors_show(struct seq_file *seq, void *v)
{
        struct adapter *adap = seq->private;
        u32 param[7], val[7];
        int ret;

        /* Note that if the sensors haven't been initialized and turned on
         * we'll get values of 0, so treat those as "<unknown>" ...
         */
        param[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
                    FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
                    FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_TMP));
        param[1] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
                    FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
                    FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_VDD));
        ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2,
                              param, val);

        if (ret < 0 || val[0] == 0)
                seq_puts(seq, "Temperature: <unknown>\n");
        else
                seq_printf(seq, "Temperature: %dC\n", val[0]);

        if (ret < 0 || val[1] == 0)
                seq_puts(seq, "Core VDD:    <unknown>\n");
        else
                seq_printf(seq, "Core VDD:    %dmV\n", val[1]);

        return 0;
}
DEFINE_SHOW_ATTRIBUTE(sensors);

#if IS_ENABLED(CONFIG_IPV6)
DEFINE_SHOW_ATTRIBUTE(clip_tbl);
#endif

/*RSS Table.
 */

static int rss_show(struct seq_file *seq, void *v, int idx)
{
        u16 *entry = v;

        seq_printf(seq, "%4d:  %4u  %4u  %4u  %4u  %4u  %4u  %4u  %4u\n",
                   idx * 8, entry[0], entry[1], entry[2], entry[3], entry[4],
                   entry[5], entry[6], entry[7]);
        return 0;
}

static int rss_open(struct inode *inode, struct file *file)
{
        struct adapter *adap = inode->i_private;
        int ret, nentries;
        struct seq_tab *p;

        nentries = t4_chip_rss_size(adap);
        p = seq_open_tab(file, nentries / 8, 8 * sizeof(u16), 0, rss_show);
        if (!p)
                return -ENOMEM;

        ret = t4_read_rss(adap, (u16 *)p->data);

        if (ret)
                seq_release_private(inode, file);

        return ret;
}

static const struct file_operations rss_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = rss_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

/* RSS Configuration.
 */

/* Small utility function to return the strings "yes" or "no" if the supplied
 * argument is non-zero.
 */
static const char *yesno(int x)
{
        static const char *yes = "yes";
        static const char *no = "no";

        return x ? yes : no;
}

static int rss_config_show(struct seq_file *seq, void *v)
{
        struct adapter *adapter = seq->private;
        static const char * const keymode[] = {
                "global",
                "global and per-VF scramble",
                "per-PF and per-VF scramble",
                "per-VF and per-VF scramble",
        };
        u32 rssconf;

        rssconf = t4_read_reg(adapter, TP_RSS_CONFIG_A);
        seq_printf(seq, "TP_RSS_CONFIG: %#x\n", rssconf);
        seq_printf(seq, "  Tnl4TupEnIpv6: %3s\n", yesno(rssconf &
                                                        TNL4TUPENIPV6_F));
        seq_printf(seq, "  Tnl2TupEnIpv6: %3s\n", yesno(rssconf &
                                                        TNL2TUPENIPV6_F));
        seq_printf(seq, "  Tnl4TupEnIpv4: %3s\n", yesno(rssconf &
                                                        TNL4TUPENIPV4_F));
        seq_printf(seq, "  Tnl2TupEnIpv4: %3s\n", yesno(rssconf &
                                                        TNL2TUPENIPV4_F));
        seq_printf(seq, "  TnlTcpSel:     %3s\n", yesno(rssconf & TNLTCPSEL_F));
        seq_printf(seq, "  TnlIp6Sel:     %3s\n", yesno(rssconf & TNLIP6SEL_F));
        seq_printf(seq, "  TnlVrtSel:     %3s\n", yesno(rssconf & TNLVRTSEL_F));
        seq_printf(seq, "  TnlMapEn:      %3s\n", yesno(rssconf & TNLMAPEN_F));
        seq_printf(seq, "  OfdHashSave:   %3s\n", yesno(rssconf &
                                                        OFDHASHSAVE_F));
        seq_printf(seq, "  OfdVrtSel:     %3s\n", yesno(rssconf & OFDVRTSEL_F));
        seq_printf(seq, "  OfdMapEn:      %3s\n", yesno(rssconf & OFDMAPEN_F));
        seq_printf(seq, "  OfdLkpEn:      %3s\n", yesno(rssconf & OFDLKPEN_F));
        seq_printf(seq, "  Syn4TupEnIpv6: %3s\n", yesno(rssconf &
                                                        SYN4TUPENIPV6_F));
        seq_printf(seq, "  Syn2TupEnIpv6: %3s\n", yesno(rssconf &
                                                        SYN2TUPENIPV6_F));
        seq_printf(seq, "  Syn4TupEnIpv4: %3s\n", yesno(rssconf &
                                                        SYN4TUPENIPV4_F));
        seq_printf(seq, "  Syn2TupEnIpv4: %3s\n", yesno(rssconf &
                                                        SYN2TUPENIPV4_F));
        seq_printf(seq, "  Syn4TupEnIpv6: %3s\n", yesno(rssconf &
                                                        SYN4TUPENIPV6_F));
        seq_printf(seq, "  SynIp6Sel:     %3s\n", yesno(rssconf & SYNIP6SEL_F));
        seq_printf(seq, "  SynVrt6Sel:    %3s\n", yesno(rssconf & SYNVRTSEL_F));
        seq_printf(seq, "  SynMapEn:      %3s\n", yesno(rssconf & SYNMAPEN_F));
        seq_printf(seq, "  SynLkpEn:      %3s\n", yesno(rssconf & SYNLKPEN_F));
        seq_printf(seq, "  ChnEn:         %3s\n", yesno(rssconf &
                                                        CHANNELENABLE_F));
        seq_printf(seq, "  PrtEn:         %3s\n", yesno(rssconf &
                                                        PORTENABLE_F));
        seq_printf(seq, "  TnlAllLkp:     %3s\n", yesno(rssconf &
                                                        TNLALLLOOKUP_F));
        seq_printf(seq, "  VrtEn:         %3s\n", yesno(rssconf &
                                                        VIRTENABLE_F));
        seq_printf(seq, "  CngEn:         %3s\n", yesno(rssconf &
                                                        CONGESTIONENABLE_F));
        seq_printf(seq, "  HashToeplitz:  %3s\n", yesno(rssconf &
                                                        HASHTOEPLITZ_F));
        seq_printf(seq, "  Udp4En:        %3s\n", yesno(rssconf & UDPENABLE_F));
        seq_printf(seq, "  Disable:       %3s\n", yesno(rssconf & DISABLE_F));

        seq_puts(seq, "\n");

        rssconf = t4_read_reg(adapter, TP_RSS_CONFIG_TNL_A);
        seq_printf(seq, "TP_RSS_CONFIG_TNL: %#x\n", rssconf);
        seq_printf(seq, "  MaskSize:      %3d\n", MASKSIZE_G(rssconf));
        seq_printf(seq, "  MaskFilter:    %3d\n", MASKFILTER_G(rssconf));
        if (CHELSIO_CHIP_VERSION(adapter->params.chip) > CHELSIO_T5) {
                seq_printf(seq, "  HashAll:     %3s\n",
                           yesno(rssconf & HASHALL_F));
                seq_printf(seq, "  HashEth:     %3s\n",
                           yesno(rssconf & HASHETH_F));
        }
        seq_printf(seq, "  UseWireCh:     %3s\n", yesno(rssconf & USEWIRECH_F));

        seq_puts(seq, "\n");

        rssconf = t4_read_reg(adapter, TP_RSS_CONFIG_OFD_A);
        seq_printf(seq, "TP_RSS_CONFIG_OFD: %#x\n", rssconf);
        seq_printf(seq, "  MaskSize:      %3d\n", MASKSIZE_G(rssconf));
        seq_printf(seq, "  RRCplMapEn:    %3s\n", yesno(rssconf &
                                                        RRCPLMAPEN_F));
        seq_printf(seq, "  RRCplQueWidth: %3d\n", RRCPLQUEWIDTH_G(rssconf));

        seq_puts(seq, "\n");

        rssconf = t4_read_reg(adapter, TP_RSS_CONFIG_SYN_A);
        seq_printf(seq, "TP_RSS_CONFIG_SYN: %#x\n", rssconf);
        seq_printf(seq, "  MaskSize:      %3d\n", MASKSIZE_G(rssconf));
        seq_printf(seq, "  UseWireCh:     %3s\n", yesno(rssconf & USEWIRECH_F));

        seq_puts(seq, "\n");

        rssconf = t4_read_reg(adapter, TP_RSS_CONFIG_VRT_A);
        seq_printf(seq, "TP_RSS_CONFIG_VRT: %#x\n", rssconf);
        if (CHELSIO_CHIP_VERSION(adapter->params.chip) > CHELSIO_T5) {
                seq_printf(seq, "  KeyWrAddrX:     %3d\n",
                           KEYWRADDRX_G(rssconf));
                seq_printf(seq, "  KeyExtend:      %3s\n",
                           yesno(rssconf & KEYEXTEND_F));
        }
        seq_printf(seq, "  VfRdRg:        %3s\n", yesno(rssconf & VFRDRG_F));
        seq_printf(seq, "  VfRdEn:        %3s\n", yesno(rssconf & VFRDEN_F));
        seq_printf(seq, "  VfPerrEn:      %3s\n", yesno(rssconf & VFPERREN_F));
        seq_printf(seq, "  KeyPerrEn:     %3s\n", yesno(rssconf & KEYPERREN_F));
        seq_printf(seq, "  DisVfVlan:     %3s\n", yesno(rssconf &
                                                        DISABLEVLAN_F));
        seq_printf(seq, "  EnUpSwt:       %3s\n", yesno(rssconf & ENABLEUP0_F));
        seq_printf(seq, "  HashDelay:     %3d\n", HASHDELAY_G(rssconf));
        if (CHELSIO_CHIP_VERSION(adapter->params.chip) <= CHELSIO_T5)
                seq_printf(seq, "  VfWrAddr:      %3d\n", VFWRADDR_G(rssconf));
        else
                seq_printf(seq, "  VfWrAddr:      %3d\n",
                           T6_VFWRADDR_G(rssconf));
        seq_printf(seq, "  KeyMode:       %s\n", keymode[KEYMODE_G(rssconf)]);
        seq_printf(seq, "  VfWrEn:        %3s\n", yesno(rssconf & VFWREN_F));
        seq_printf(seq, "  KeyWrEn:       %3s\n", yesno(rssconf & KEYWREN_F));
        seq_printf(seq, "  KeyWrAddr:     %3d\n", KEYWRADDR_G(rssconf));

        seq_puts(seq, "\n");

        rssconf = t4_read_reg(adapter, TP_RSS_CONFIG_CNG_A);
        seq_printf(seq, "TP_RSS_CONFIG_CNG: %#x\n", rssconf);
        seq_printf(seq, "  ChnCount3:     %3s\n", yesno(rssconf & CHNCOUNT3_F));
        seq_printf(seq, "  ChnCount2:     %3s\n", yesno(rssconf & CHNCOUNT2_F));
        seq_printf(seq, "  ChnCount1:     %3s\n", yesno(rssconf & CHNCOUNT1_F));
        seq_printf(seq, "  ChnCount0:     %3s\n", yesno(rssconf & CHNCOUNT0_F));
        seq_printf(seq, "  ChnUndFlow3:   %3s\n", yesno(rssconf &
                                                        CHNUNDFLOW3_F));
        seq_printf(seq, "  ChnUndFlow2:   %3s\n", yesno(rssconf &
                                                        CHNUNDFLOW2_F));
        seq_printf(seq, "  ChnUndFlow1:   %3s\n", yesno(rssconf &
                                                        CHNUNDFLOW1_F));
        seq_printf(seq, "  ChnUndFlow0:   %3s\n", yesno(rssconf &
                                                        CHNUNDFLOW0_F));
        seq_printf(seq, "  RstChn3:       %3s\n", yesno(rssconf & RSTCHN3_F));
        seq_printf(seq, "  RstChn2:       %3s\n", yesno(rssconf & RSTCHN2_F));
        seq_printf(seq, "  RstChn1:       %3s\n", yesno(rssconf & RSTCHN1_F));
        seq_printf(seq, "  RstChn0:       %3s\n", yesno(rssconf & RSTCHN0_F));
        seq_printf(seq, "  UpdVld:        %3s\n", yesno(rssconf & UPDVLD_F));
        seq_printf(seq, "  Xoff:          %3s\n", yesno(rssconf & XOFF_F));
        seq_printf(seq, "  UpdChn3:       %3s\n", yesno(rssconf & UPDCHN3_F));
        seq_printf(seq, "  UpdChn2:       %3s\n", yesno(rssconf & UPDCHN2_F));
        seq_printf(seq, "  UpdChn1:       %3s\n", yesno(rssconf & UPDCHN1_F));
        seq_printf(seq, "  UpdChn0:       %3s\n", yesno(rssconf & UPDCHN0_F));
        seq_printf(seq, "  Queue:         %3d\n", QUEUE_G(rssconf));

        return 0;
}
DEFINE_SHOW_ATTRIBUTE(rss_config);

/* RSS Secret Key.
 */

static int rss_key_show(struct seq_file *seq, void *v)
{
        u32 key[10];

        t4_read_rss_key(seq->private, key, true);
        seq_printf(seq, "%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x\n",
                   key[9], key[8], key[7], key[6], key[5], key[4], key[3],
                   key[2], key[1], key[0]);
        return 0;
}

static int rss_key_open(struct inode *inode, struct file *file)
{
        return single_open(file, rss_key_show, inode->i_private);
}

static ssize_t rss_key_write(struct file *file, const char __user *buf,
                             size_t count, loff_t *pos)
{
        int i, j;
        u32 key[10];
        char s[100], *p;
        struct adapter *adap = file_inode(file)->i_private;

        if (count > sizeof(s) - 1)
                return -EINVAL;
        if (copy_from_user(s, buf, count))
                return -EFAULT;
        for (i = count; i > 0 && isspace(s[i - 1]); i--)
                ;
        s[i] = '\0';

        for (p = s, i = 9; i >= 0; i--) {
                key[i] = 0;
                for (j = 0; j < 8; j++, p++) {
                        if (!isxdigit(*p))
                                return -EINVAL;
                        key[i] = (key[i] << 4) | hex2val(*p);
                }
        }

        t4_write_rss_key(adap, key, -1, true);
        return count;
}

static const struct file_operations rss_key_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = rss_key_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = single_release,
        .write   = rss_key_write
};

/* PF RSS Configuration.
 */

struct rss_pf_conf {
        u32 rss_pf_map;
        u32 rss_pf_mask;
        u32 rss_pf_config;
};

static int rss_pf_config_show(struct seq_file *seq, void *v, int idx)
{
        struct rss_pf_conf *pfconf;

        if (v == SEQ_START_TOKEN) {
                /* use the 0th entry to dump the PF Map Index Size */
                pfconf = seq->private + offsetof(struct seq_tab, data);
                seq_printf(seq, "PF Map Index Size = %d\n\n",
                           LKPIDXSIZE_G(pfconf->rss_pf_map));

                seq_puts(seq, "     RSS              PF   VF    Hash Tuple Enable         Default\n");
                seq_puts(seq, "     Enable       IPF Mask Mask  IPv6      IPv4      UDP   Queue\n");
                seq_puts(seq, " PF  Map Chn Prt  Map Size Size  Four Two  Four Two  Four  Ch1  Ch0\n");
        } else {
                #define G_PFnLKPIDX(map, n) \
                        (((map) >> PF1LKPIDX_S*(n)) & PF0LKPIDX_M)
                #define G_PFnMSKSIZE(mask, n) \
                        (((mask) >> PF1MSKSIZE_S*(n)) & PF1MSKSIZE_M)

                pfconf = v;
                seq_printf(seq, "%3d  %3s %3s %3s  %3d  %3d  %3d   %3s %3s   %3s %3s   %3s  %3d  %3d\n",
                           idx,
                           yesno(pfconf->rss_pf_config & MAPENABLE_F),
                           yesno(pfconf->rss_pf_config & CHNENABLE_F),
                           yesno(pfconf->rss_pf_config & PRTENABLE_F),
                           G_PFnLKPIDX(pfconf->rss_pf_map, idx),
                           G_PFnMSKSIZE(pfconf->rss_pf_mask, idx),
                           IVFWIDTH_G(pfconf->rss_pf_config),
                           yesno(pfconf->rss_pf_config & IP6FOURTUPEN_F),
                           yesno(pfconf->rss_pf_config & IP6TWOTUPEN_F),
                           yesno(pfconf->rss_pf_config & IP4FOURTUPEN_F),
                           yesno(pfconf->rss_pf_config & IP4TWOTUPEN_F),
                           yesno(pfconf->rss_pf_config & UDPFOURTUPEN_F),
                           CH1DEFAULTQUEUE_G(pfconf->rss_pf_config),
                           CH0DEFAULTQUEUE_G(pfconf->rss_pf_config));

                #undef G_PFnLKPIDX
                #undef G_PFnMSKSIZE
        }
        return 0;
}

static int rss_pf_config_open(struct inode *inode, struct file *file)
{
        struct adapter *adapter = inode->i_private;
        struct seq_tab *p;
        u32 rss_pf_map, rss_pf_mask;
        struct rss_pf_conf *pfconf;
        int pf;

        p = seq_open_tab(file, 8, sizeof(*pfconf), 1, rss_pf_config_show);
        if (!p)
                return -ENOMEM;

        pfconf = (struct rss_pf_conf *)p->data;
        rss_pf_map = t4_read_rss_pf_map(adapter, true);
        rss_pf_mask = t4_read_rss_pf_mask(adapter, true);
        for (pf = 0; pf < 8; pf++) {
                pfconf[pf].rss_pf_map = rss_pf_map;
                pfconf[pf].rss_pf_mask = rss_pf_mask;
                t4_read_rss_pf_config(adapter, pf, &pfconf[pf].rss_pf_config,
                                      true);
        }
        return 0;
}

static const struct file_operations rss_pf_config_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = rss_pf_config_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

/* VF RSS Configuration.
 */

struct rss_vf_conf {
        u32 rss_vf_vfl;
        u32 rss_vf_vfh;
};

static int rss_vf_config_show(struct seq_file *seq, void *v, int idx)
{
        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "     RSS                     Hash Tuple Enable\n");
                seq_puts(seq, "     Enable   IVF  Dis  Enb  IPv6      IPv4      UDP    Def  Secret Key\n");
                seq_puts(seq, " VF  Chn Prt  Map  VLAN  uP  Four Two  Four Two  Four   Que  Idx       Hash\n");
        } else {
                struct rss_vf_conf *vfconf = v;

                seq_printf(seq, "%3d  %3s %3s  %3d   %3s %3s   %3s %3s   %3s  %3s   %3s  %4d  %3d %#10x\n",
                           idx,
                           yesno(vfconf->rss_vf_vfh & VFCHNEN_F),
                           yesno(vfconf->rss_vf_vfh & VFPRTEN_F),
                           VFLKPIDX_G(vfconf->rss_vf_vfh),
                           yesno(vfconf->rss_vf_vfh & VFVLNEX_F),
                           yesno(vfconf->rss_vf_vfh & VFUPEN_F),
                           yesno(vfconf->rss_vf_vfh & VFIP4FOURTUPEN_F),
                           yesno(vfconf->rss_vf_vfh & VFIP6TWOTUPEN_F),
                           yesno(vfconf->rss_vf_vfh & VFIP4FOURTUPEN_F),
                           yesno(vfconf->rss_vf_vfh & VFIP4TWOTUPEN_F),
                           yesno(vfconf->rss_vf_vfh & ENABLEUDPHASH_F),
                           DEFAULTQUEUE_G(vfconf->rss_vf_vfh),
                           KEYINDEX_G(vfconf->rss_vf_vfh),
                           vfconf->rss_vf_vfl);
        }
        return 0;
}

static int rss_vf_config_open(struct inode *inode, struct file *file)
{
        struct adapter *adapter = inode->i_private;
        struct seq_tab *p;
        struct rss_vf_conf *vfconf;
        int vf, vfcount = adapter->params.arch.vfcount;

        p = seq_open_tab(file, vfcount, sizeof(*vfconf), 1, rss_vf_config_show);
        if (!p)
                return -ENOMEM;

        vfconf = (struct rss_vf_conf *)p->data;
        for (vf = 0; vf < vfcount; vf++) {
                t4_read_rss_vf_config(adapter, vf, &vfconf[vf].rss_vf_vfl,
                                      &vfconf[vf].rss_vf_vfh, true);
        }
        return 0;
}

static const struct file_operations rss_vf_config_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = rss_vf_config_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release_private
};

#ifdef CONFIG_CHELSIO_T4_DCB

/* Data Center Briging information for each port.
 */
static int dcb_info_show(struct seq_file *seq, void *v)
{
        struct adapter *adap = seq->private;

        if (v == SEQ_START_TOKEN) {
                seq_puts(seq, "Data Center Bridging Information\n");
        } else {
                int port = (uintptr_t)v - 2;
                struct net_device *dev = adap->port[port];
                struct port_info *pi = netdev2pinfo(dev);
                struct port_dcb_info *dcb = &pi->dcb;

                seq_puts(seq, "\n");
                seq_printf(seq, "Port: %d (DCB negotiated: %s)\n",
                           port,
                           cxgb4_dcb_enabled(dev) ? "yes" : "no");

                if (cxgb4_dcb_enabled(dev))
                        seq_printf(seq, "[ DCBx Version %s ]\n",
                                   dcb_ver_array[dcb->dcb_version]);

                if (dcb->msgs) {
                        int i;

                        seq_puts(seq, "\n  Index\t\t\t  :\t");
                        for (i = 0; i < 8; i++)
                                seq_printf(seq, " %3d", i);
                        seq_puts(seq, "\n\n");
                }

                if (dcb->msgs & CXGB4_DCB_FW_PGID) {
                        int prio, pgid;

                        seq_puts(seq, "  Priority Group IDs\t  :\t");
                        for (prio = 0; prio < 8; prio++) {
                                pgid = (dcb->pgid >> 4 * (7 - prio)) & 0xf;
                                seq_printf(seq, " %3d", pgid);
                        }
                        seq_puts(seq, "\n");
                }

                if (dcb->msgs & CXGB4_DCB_FW_PGRATE) {
                        int pg;

                        seq_puts(seq, "  Priority Group BW(%)\t  :\t");
                        for (pg = 0; pg < 8; pg++)
                                seq_printf(seq, " %3d", dcb->pgrate[pg]);
                        seq_puts(seq, "\n");

                        if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) {
                                seq_puts(seq, "  TSA Algorithm\t\t  :\t");
                                for (pg = 0; pg < 8; pg++)
                                        seq_printf(seq, " %3d", dcb->tsa[pg]);
                                seq_puts(seq, "\n");
                        }

                        seq_printf(seq, "  Max PG Traffic Classes  [%3d  ]\n",
                                   dcb->pg_num_tcs_supported);

                        seq_puts(seq, "\n");
                }

                if (dcb->msgs & CXGB4_DCB_FW_PRIORATE) {
                        int prio;

                        seq_puts(seq, "  Priority Rate\t:\t");
                        for (prio = 0; prio < 8; prio++)
                                seq_printf(seq, " %3d", dcb->priorate[prio]);
                        seq_puts(seq, "\n");
                }

                if (dcb->msgs & CXGB4_DCB_FW_PFC) {
                        int prio;

                        seq_puts(seq, "  Priority Flow Control   :\t");
                        for (prio = 0; prio < 8; prio++) {
                                int pfcen = (dcb->pfcen >> 1 * (7 - prio))
                                            & 0x1;
                                seq_printf(seq, " %3d", pfcen);
                        }
                        seq_puts(seq, "\n");

                        seq_printf(seq, "  Max PFC Traffic Classes [%3d  ]\n",
                                   dcb->pfc_num_tcs_supported);

                        seq_puts(seq, "\n");
                }

                if (dcb->msgs & CXGB4_DCB_FW_APP_ID) {
                        int app, napps;

                        seq_puts(seq, "  Application Information:\n");
                        seq_puts(seq, "  App    Priority    Selection         Protocol\n");
                        seq_puts(seq, "  Index  Map         Field             ID\n");
                        for (app = 0, napps = 0;
                             app < CXGB4_MAX_DCBX_APP_SUPPORTED; app++) {
                                struct app_priority *ap;
                                static const char * const sel_names[] = {
                                        "Ethertype",
                                        "Socket TCP",
                                        "Socket UDP",
                                        "Socket All",
                                };
                                const char *sel_name;

                                ap = &dcb->app_priority[app];
                                /* skip empty slots */
                                if (ap->protocolid == 0)
                                        continue;
                                napps++;

                                if (ap->sel_field < ARRAY_SIZE(sel_names))
                                        sel_name = sel_names[ap->sel_field];
                                else
                                        sel_name = "UNKNOWN";

                                seq_printf(seq, "  %3d    %#04x        %-10s (%d)    %#06x (%d)\n",
                                           app,
                                           ap->user_prio_map,
                                           sel_name, ap->sel_field,
                                           ap->protocolid, ap->protocolid);
                        }
                        if (napps == 0)
                                seq_puts(seq, "    --- None ---\n");
                }
        }
        return 0;
}

static inline void *dcb_info_get_idx(struct adapter *adap, loff_t pos)
{
        return (pos <= adap->params.nports
                ? (void *)((uintptr_t)pos + 1)
                : NULL);
}

static void *dcb_info_start(struct seq_file *seq, loff_t *pos)
{
        struct adapter *adap = seq->private;

        return (*pos
                ? dcb_info_get_idx(adap, *pos)
                : SEQ_START_TOKEN);
}

static void dcb_info_stop(struct seq_file *seq, void *v)
{
}

static void *dcb_info_next(struct seq_file *seq, void *v, loff_t *pos)
{
        struct adapter *adap = seq->private;

        (*pos)++;
        return dcb_info_get_idx(adap, *pos);
}

static const struct seq_operations dcb_info_seq_ops = {
        .start = dcb_info_start,
        .next  = dcb_info_next,
        .stop  = dcb_info_stop,
        .show  = dcb_info_show
};

static int dcb_info_open(struct inode *inode, struct file *file)
{
        int res = seq_open(file, &dcb_info_seq_ops);

        if (!res) {
                struct seq_file *seq = file->private_data;

                seq->private = inode->i_private;
        }
        return res;
}

static const struct file_operations dcb_info_debugfs_fops = {
        .owner   = THIS_MODULE,
        .open    = dcb_info_open,
        .read    = seq_read,
        .llseek  = seq_lseek,
        .release = seq_release,
};
#endif /* CONFIG_CHELSIO_T4_DCB */

static int resources_show(struct seq_file *seq, void *v)
{
        struct adapter *adapter = seq->private;
        struct pf_resources *pfres = &adapter->params.pfres;

        #define S(desc, fmt, var) \
                seq_printf(seq, "%-60s " fmt "\n", \
                           desc " (" #var "):", pfres->var)

        S("Virtual Interfaces", "%d", nvi);
        S("Egress Queues", "%d", neq);
        S("Ethernet Control", "%d", nethctrl);
        S("Ingress Queues/w Free Lists/Interrupts", "%d", niqflint);
        S("Ingress Queues", "%d", niq);
        S("Traffic Class", "%d", tc);
        S("Port Access Rights Mask", "%#x", pmask);
        S("MAC Address Filters", "%d", nexactf);
        S("Firmware Command Read Capabilities", "%#x", r_caps);
        S("Firmware Command Write/Execute Capabilities", "%#x", wx_caps);

        #undef S

        return 0;
}
DEFINE_SHOW_ATTRIBUTE(resources);

/**
 * ethqset2pinfo - return port_info of an Ethernet Queue Set
 * @adap: the adapter
 * @qset: Ethernet Queue Set
 */
static inline struct port_info *ethqset2pinfo(struct adapter *adap, int qset)
{
        int pidx;

        for_each_port(adap, pidx) {
                struct port_info *pi = adap2pinfo(adap, pidx);

                if (qset >= pi->first_qset &&
                    qset < pi->first_qset + pi->nqsets)
                        return pi;
        }

        /* should never happen! */
        BUG();
        return NULL;
}

static int sge_qinfo_uld_txq_entries(const struct adapter *adap, int uld)
{
        const struct sge_uld_txq_info *utxq_info = adap->sge.uld_txq_info[uld];

        if (!utxq_info)
                return 0;

        return DIV_ROUND_UP(utxq_info->ntxq, 4);
}

static int sge_qinfo_uld_rspq_entries(const struct adapter *adap, int uld,
                                      bool ciq)
{
        const struct sge_uld_rxq_info *urxq_info = adap->sge.uld_rxq_info[uld];

        if (!urxq_info)
                return 0;

        return ciq ? DIV_ROUND_UP(urxq_info->nciq, 4) :
                     DIV_ROUND_UP(urxq_info->nrxq, 4);
}

static int sge_qinfo_uld_rxq_entries(const struct adapter *adap, int uld)
{
        return sge_qinfo_uld_rspq_entries(adap, uld, false);
}

static int sge_qinfo_uld_ciq_entries(const struct adapter *adap, int uld)
{
        return sge_qinfo_uld_rspq_entries(adap, uld, true);
}

static int sge_qinfo_show(struct seq_file *seq, void *v)
{
        int eth_entries, ctrl_entries, eohw_entries = 0, eosw_entries = 0;
        int uld_rxq_entries[CXGB4_ULD_MAX] = { 0 };
        int uld_ciq_entries[CXGB4_ULD_MAX] = { 0 };
        int uld_txq_entries[CXGB4_TX_MAX] = { 0 };
        const struct sge_uld_txq_info *utxq_info;
        const struct sge_uld_rxq_info *urxq_info;
        struct cxgb4_tc_port_mqprio *port_mqprio;
        struct adapter *adap = seq->private;
        int i, j, n, r = (uintptr_t)v - 1;
        struct sge *s = &adap->sge;

        eth_entries = DIV_ROUND_UP(adap->sge.ethqsets, 4);
        ctrl_entries = DIV_ROUND_UP(MAX_CTRL_QUEUES, 4);

        if (r)
                seq_putc(seq, '\n');

#define S3(fmt_spec, s, v) \
do { \
        seq_printf(seq, "%-12s", s); \
        for (i = 0; i < n; ++i) \
                seq_printf(seq, " %16" fmt_spec, v); \
        seq_putc(seq, '\n'); \
} while (0)
#define S(s, v) S3("s", s, v)
#define T3(fmt_spec, s, v) S3(fmt_spec, s, tx[i].v)
#define T(s, v) S3("u", s, tx[i].v)
#define TL(s, v) T3("lu", s, v)
#define R3(fmt_spec, s, v) S3(fmt_spec, s, rx[i].v)
#define R(s, v) S3("u", s, rx[i].v)
#define RL(s, v) R3("lu", s, v)

        if (r < eth_entries) {
                int base_qset = r * 4;
                const struct sge_eth_rxq *rx = &s->ethrxq[base_qset];
                const struct sge_eth_txq *tx = &s->ethtxq[base_qset];

                n = min(4, s->ethqsets - 4 * r);

                S("QType:", "Ethernet");
                S("Interface:",
                  rx[i].rspq.netdev ? rx[i].rspq.netdev->name : "N/A");
                T("TxQ ID:", q.cntxt_id);
                T("TxQ size:", q.size);
                T("TxQ inuse:", q.in_use);
                T("TxQ CIDX:", q.cidx);
                T("TxQ PIDX:", q.pidx);
#ifdef CONFIG_CHELSIO_T4_DCB
                T("DCB Prio:", dcb_prio);
                S3("u", "DCB PGID:",
                   (ethqset2pinfo(adap, base_qset + i)->dcb.pgid >>
                    4*(7-tx[i].dcb_prio)) & 0xf);
                S3("u", "DCB PFC:",
                   (ethqset2pinfo(adap, base_qset + i)->dcb.pfcen >>
                    1*(7-tx[i].dcb_prio)) & 0x1);
#endif
                R("RspQ ID:", rspq.abs_id);
                R("RspQ size:", rspq.size);
                R("RspQE size:", rspq.iqe_len);
                R("RspQ CIDX:", rspq.cidx);
                R("RspQ Gen:", rspq.gen);
                S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
                S3("u", "Intr pktcnt:", s->counter_val[rx[i].rspq.pktcnt_idx]);
                R("FL ID:", fl.cntxt_id);
                R("FL size:", fl.size - 8);
                R("FL pend:", fl.pend_cred);
                R("FL avail:", fl.avail);
                R("FL PIDX:", fl.pidx);
                R("FL CIDX:", fl.cidx);
                RL("RxPackets:", stats.pkts);
                RL("RxCSO:", stats.rx_cso);
                RL("VLANxtract:", stats.vlan_ex);
                RL("LROmerged:", stats.lro_merged);
                RL("LROpackets:", stats.lro_pkts);
                RL("RxDrops:", stats.rx_drops);
                RL("RxBadPkts:", stats.bad_rx_pkts);
                TL("TSO:", tso);
                TL("USO:", uso);
                TL("TxCSO:", tx_cso);
                TL("VLANins:", vlan_ins);
                TL("TxQFull:", q.stops);
                TL("TxQRestarts:", q.restarts);
                TL("TxMapErr:", mapping_err);
                RL("FLAllocErr:", fl.alloc_failed);
                RL("FLLrgAlcErr:", fl.large_alloc_failed);
                RL("FLMapErr:", fl.mapping_err);
                RL("FLLow:", fl.low);
                RL("FLStarving:", fl.starving);

                goto out;
        }

        r -= eth_entries;
        for_each_port(adap, j) {
                struct port_info *pi = adap2pinfo(adap, j);
                const struct sge_eth_rxq *rx;

                mutex_lock(&pi->vi_mirror_mutex);
                if (!pi->vi_mirror_count) {
                        mutex_unlock(&pi->vi_mirror_mutex);
                        continue;
                }

                if (r >= DIV_ROUND_UP(pi->nmirrorqsets, 4)) {
                        r -= DIV_ROUND_UP(pi->nmirrorqsets, 4);
                        mutex_unlock(&pi->vi_mirror_mutex);
                        continue;
                }

                rx = &s->mirror_rxq[j][r * 4];
                n = min(4, pi->nmirrorqsets - 4 * r);

                S("QType:", "Mirror-Rxq");
                S("Interface:",
                  rx[i].rspq.netdev ? rx[i].rspq.netdev->name : "N/A");
                R("RspQ ID:", rspq.abs_id);
                R("RspQ size:", rspq.size);
                R("RspQE size:", rspq.iqe_len);
                R("RspQ CIDX:", rspq.cidx);
                R("RspQ Gen:", rspq.gen);
                S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
                S3("u", "Intr pktcnt:", s->counter_val[rx[i].rspq.pktcnt_idx]);
                R("FL ID:", fl.cntxt_id);
                R("FL size:", fl.size - 8);
                R("FL pend:", fl.pend_cred);
                R("FL avail:", fl.avail);
                R("FL PIDX:", fl.pidx);
                R("FL CIDX:", fl.cidx);
                RL("RxPackets:", stats.pkts);
                RL("RxCSO:", stats.rx_cso);
                RL("VLANxtract:", stats.vlan_ex);
                RL("LROmerged:", stats.lro_merged);
                RL("LROpackets:", stats.lro_pkts);
                RL("RxDrops:", stats.rx_drops);
                RL("RxBadPkts:", stats.bad_rx_pkts);
                RL("FLAllocErr:", fl.alloc_failed);
                RL("FLLrgAlcErr:", fl.large_alloc_failed);
                RL("FLMapErr:", fl.mapping_err);
                RL("FLLow:", fl.low);
                RL("FLStarving:", fl.starving);

                mutex_unlock(&pi->vi_mirror_mutex);
                goto out;
        }

        if (!adap->tc_mqprio)
                goto skip_mqprio;

        mutex_lock(&adap->tc_mqprio->mqprio_mutex);
        if (!refcount_read(&adap->tc_mqprio->refcnt)) {
                mutex_unlock(&adap->tc_mqprio->mqprio_mutex);
                goto skip_mqprio;
        }

        eohw_entries = DIV_ROUND_UP(adap->sge.eoqsets, 4);
        if (r < eohw_entries) {
                int base_qset = r * 4;
                const struct sge_ofld_rxq *rx = &s->eohw_rxq[base_qset];
                const struct sge_eohw_txq *tx = &s->eohw_txq[base_qset];

                n = min(4, s->eoqsets - 4 * r);

                S("QType:", "ETHOFLD");
                S("Interface:",
                  rx[i].rspq.netdev ? rx[i].rspq.netdev->name : "N/A");
                T("TxQ ID:", q.cntxt_id);
                T("TxQ size:", q.size);
                T("TxQ inuse:", q.in_use);
                T("TxQ CIDX:", q.cidx);
                T("TxQ PIDX:", q.pidx);
                R("RspQ ID:", rspq.abs_id);
                R("RspQ size:", rspq.size);
                R("RspQE size:", rspq.iqe_len);
                R("RspQ CIDX:", rspq.cidx);
                R("RspQ Gen:", rspq.gen);
                S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
                S3("u", "Intr pktcnt:", s->counter_val[rx[i].rspq.pktcnt_idx]);
                R("FL ID:", fl.cntxt_id);
                S3("u", "FL size:", rx->fl.size ? rx->fl.size - 8 : 0);
                R("FL pend:", fl.pend_cred);
                R("FL avail:", fl.avail);
                R("FL PIDX:", fl.pidx);
                R("FL CIDX:", fl.cidx);
                RL("RxPackets:", stats.pkts);
                RL("RxImm:", stats.imm);
                RL("RxAN", stats.an);
                RL("RxNoMem", stats.nomem);
                TL("TSO:", tso);
                TL("USO:", uso);
                TL("TxCSO:", tx_cso);
                TL("VLANins:", vlan_ins);
                TL("TxQFull:", q.stops);
                TL("TxQRestarts:", q.restarts);
                TL("TxMapErr:", mapping_err);
                RL("FLAllocErr:", fl.alloc_failed);
                RL("FLLrgAlcErr:", fl.large_alloc_failed);
                RL("FLMapErr:", fl.mapping_err);
                RL("FLLow:", fl.low);
                RL("FLStarving:", fl.starving);

                mutex_unlock(&adap->tc_mqprio->mqprio_mutex);
                goto out;
        }

        r -= eohw_entries;
        for (j = 0; j < adap->params.nports; j++) {
                int entries;
                u8 tc;

                port_mqprio = &adap->tc_mqprio->port_mqprio[j];
                entries = 0;
                for (tc = 0; tc < port_mqprio->mqprio.qopt.num_tc; tc++)
                        entries += port_mqprio->mqprio.qopt.count[tc];

                if (!entries)
                        continue;

                eosw_entries = DIV_ROUND_UP(entries, 4);
                if (r < eosw_entries) {
                        const struct sge_eosw_txq *tx;

                        n = min(4, entries - 4 * r);
                        tx = &port_mqprio->eosw_txq[4 * r];

                        S("QType:", "EOSW-TXQ");
                        S("Interface:",
                          adap->port[j] ? adap->port[j]->name : "N/A");
                        T("EOTID:", hwtid);
                        T("HWQID:", hwqid);
                        T("State:", state);
                        T("Size:", ndesc);
                        T("In-Use:", inuse);
                        T("Credits:", cred);
                        T("Compl:", ncompl);
                        T("Last-Compl:", last_compl);
                        T("PIDX:", pidx);
                        T("Last-PIDX:", last_pidx);
                        T("CIDX:", cidx);
                        T("Last-CIDX:", last_cidx);
                        T("FLOWC-IDX:", flowc_idx);

                        mutex_unlock(&adap->tc_mqprio->mqprio_mutex);
                        goto out;
                }

                r -= eosw_entries;
        }
        mutex_unlock(&adap->tc_mqprio->mqprio_mutex);

skip_mqprio:
        if (!is_uld(adap))
                goto skip_uld;

        mutex_lock(&uld_mutex);
        if (s->uld_txq_info)
                for (i = 0; i < ARRAY_SIZE(uld_txq_entries); i++)
                        uld_txq_entries[i] = sge_qinfo_uld_txq_entries(adap, i);

        if (s->uld_rxq_info) {
                for (i = 0; i < ARRAY_SIZE(uld_rxq_entries); i++) {
                        uld_rxq_entries[i] = sge_qinfo_uld_rxq_entries(adap, i);
                        uld_ciq_entries[i] = sge_qinfo_uld_ciq_entries(adap, i);
                }
        }

        if (r < uld_txq_entries[CXGB4_TX_OFLD]) {
                const struct sge_uld_txq *tx;

                utxq_info = s->uld_txq_info[CXGB4_TX_OFLD];
                tx = &utxq_info->uldtxq[r * 4];
                n = min(4, utxq_info->ntxq - 4 * r);

                S("QType:", "OFLD-TXQ");
                T("TxQ ID:", q.cntxt_id);
                T("TxQ size:", q.size);
                T("TxQ inuse:", q.in_use);
                T("TxQ CIDX:", q.cidx);
                T("TxQ PIDX:", q.pidx);

                goto unlock;
        }

        r -= uld_txq_entries[CXGB4_TX_OFLD];
        if (r < uld_rxq_entries[CXGB4_ULD_RDMA]) {
                const struct sge_ofld_rxq *rx;

                urxq_info = s->uld_rxq_info[CXGB4_ULD_RDMA];
                rx = &urxq_info->uldrxq[r * 4];
                n = min(4, urxq_info->nrxq - 4 * r);

                S("QType:", "RDMA-CPL");
                S("Interface:",
                  rx[i].rspq.netdev ? rx[i].rspq.netdev->name : "N/A");
                R("RspQ ID:", rspq.abs_id);
                R("RspQ size:", rspq.size);
                R("RspQE size:", rspq.iqe_len);
                R("RspQ CIDX:", rspq.cidx);
                R("RspQ Gen:", rspq.gen);
                S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
                S3("u", "Intr pktcnt:", s->counter_val[rx[i].rspq.pktcnt_idx]);
                R("FL ID:", fl.cntxt_id);
                R("FL size:", fl.size - 8);
                R("FL pend:", fl.pend_cred);
                R("FL avail:", fl.avail);
                R("FL PIDX:", fl.pidx);
                R("FL CIDX:", fl.cidx);

                goto unlock;
        }

        r -= uld_rxq_entries[CXGB4_ULD_RDMA];
        if (r < uld_ciq_entries[CXGB4_ULD_RDMA]) {
                const struct sge_ofld_rxq *rx;
                int ciq_idx = 0;

                urxq_info = s->uld_rxq_info[CXGB4_ULD_RDMA];
                ciq_idx = urxq_info->nrxq + (r * 4);
                rx = &urxq_info->uldrxq[ciq_idx];
                n = min(4, urxq_info->nciq - 4 * r);

                S("QType:", "RDMA-CIQ");
                S("Interface:",
                  rx[i].rspq.netdev ? rx[i].rspq.netdev->name : "N/A");
                R("RspQ ID:", rspq.abs_id);
                R("RspQ size:", rspq.size);
                R("RspQE size:", rspq.iqe_len);
                R("RspQ CIDX:", rspq.cidx);
                R("RspQ Gen:", rspq.gen);
                S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));
                S3("u", "Intr pktcnt:", s->counter_val[rx[i].rspq.pktcnt_idx]);

                goto unlock;
        }

        r -= uld_ciq_entries[CXGB4_ULD_RDMA];
        if (r < uld_rxq_entries[CXGB4_ULD_ISCSI]) {
                const struct sge_ofld_rxq *rx;

                urxq_info = s->uld_rxq_info[CXGB4_ULD_ISCSI];
                rx = &urxq_info->uldrxq[r * 4];
                n = min(4, urxq_info->nrxq - 4 * r);

                S("QType:", "iSCSI");
                R("RspQ ID:", rspq.abs_id);
                R("RspQ size:", rspq.size);
                R("RspQE size:", rspq.iqe_len);
                R("RspQ CIDX:", rspq.cidx);
                R("RspQ Gen:", rspq.gen);
                S3("u", "Intr delay:", qtimer_val(adap, &rx[i].rspq));