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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2/* Copyright (C) 2015-2019 Netronome Systems, Inc. */3#include <linux/debugfs.h>4#include <linux/module.h>5#include <linux/rtnetlink.h>6 7#include "nfp_net.h"8#include "nfp_net_dp.h"9 10static struct dentry *nfp_dir;11 12static int nfp_rx_q_show(struct seq_file *file, void *data)13{14 struct nfp_net_r_vector *r_vec = file->private;15 struct nfp_net_rx_ring *rx_ring;16 int fl_rd_p, fl_wr_p, rxd_cnt;17 struct nfp_net_rx_desc *rxd;18 struct nfp_net *nn;19 void *frag;20 int i;21 22 rtnl_lock();23 24 if (!r_vec->nfp_net || !r_vec->rx_ring)25 goto out;26 nn = r_vec->nfp_net;27 rx_ring = r_vec->rx_ring;28 if (!nfp_net_running(nn))29 goto out;30 31 rxd_cnt = rx_ring->cnt;32 33 fl_rd_p = nfp_qcp_rd_ptr_read(rx_ring->qcp_fl);34 fl_wr_p = nfp_qcp_wr_ptr_read(rx_ring->qcp_fl);35 36 seq_printf(file, "RX[%02d,%02d]: cnt=%u dma=%pad host=%p H_RD=%u H_WR=%u FL_RD=%u FL_WR=%u\n",37 rx_ring->idx, rx_ring->fl_qcidx,38 rx_ring->cnt, &rx_ring->dma, rx_ring->rxds,39 rx_ring->rd_p, rx_ring->wr_p, fl_rd_p, fl_wr_p);40 41 for (i = 0; i < rxd_cnt; i++) {42 rxd = &rx_ring->rxds[i];43 seq_printf(file, "%04d: 0x%08x 0x%08x", i,44 rxd->vals[0], rxd->vals[1]);45 46 if (!r_vec->xsk_pool) {47 frag = READ_ONCE(rx_ring->rxbufs[i].frag);48 if (frag)49 seq_printf(file, " frag=%p", frag);50 51 if (rx_ring->rxbufs[i].dma_addr)52 seq_printf(file, " dma_addr=%pad",53 &rx_ring->rxbufs[i].dma_addr);54 } else {55 if (rx_ring->xsk_rxbufs[i].dma_addr)56 seq_printf(file, " dma_addr=%pad",57 &rx_ring->xsk_rxbufs[i].dma_addr);58 }59 60 if (i == rx_ring->rd_p % rxd_cnt)61 seq_puts(file, " H_RD ");62 if (i == rx_ring->wr_p % rxd_cnt)63 seq_puts(file, " H_WR ");64 if (i == fl_rd_p % rxd_cnt)65 seq_puts(file, " FL_RD");66 if (i == fl_wr_p % rxd_cnt)67 seq_puts(file, " FL_WR");68 69 seq_putc(file, '\n');70 }71out:72 rtnl_unlock();73 return 0;74}75DEFINE_SHOW_ATTRIBUTE(nfp_rx_q);76 77static int nfp_tx_q_show(struct seq_file *file, void *data);78DEFINE_SHOW_ATTRIBUTE(nfp_tx_q);79 80static int nfp_tx_q_show(struct seq_file *file, void *data)81{82 struct nfp_net_r_vector *r_vec = file->private;83 struct nfp_net_tx_ring *tx_ring;84 struct nfp_net *nn;85 int d_rd_p, d_wr_p;86 87 rtnl_lock();88 89 if (debugfs_real_fops(file->file) == &nfp_tx_q_fops)90 tx_ring = r_vec->tx_ring;91 else92 tx_ring = r_vec->xdp_ring;93 if (!r_vec->nfp_net || !tx_ring)94 goto out;95 nn = r_vec->nfp_net;96 if (!nfp_net_running(nn))97 goto out;98 99 d_rd_p = nfp_qcp_rd_ptr_read(tx_ring->qcp_q);100 d_wr_p = nfp_qcp_wr_ptr_read(tx_ring->qcp_q);101 102 seq_printf(file, "TX[%02d,%02d%s]: cnt=%u dma=%pad host=%p H_RD=%u H_WR=%u D_RD=%u D_WR=%u",103 tx_ring->idx, tx_ring->qcidx,104 tx_ring == r_vec->tx_ring ? "" : "xdp",105 tx_ring->cnt, &tx_ring->dma, tx_ring->txds,106 tx_ring->rd_p, tx_ring->wr_p, d_rd_p, d_wr_p);107 if (tx_ring->txrwb)108 seq_printf(file, " TXRWB=%llu", *tx_ring->txrwb);109 seq_putc(file, '\n');110 111 nfp_net_debugfs_print_tx_descs(file, &nn->dp, r_vec, tx_ring,112 d_rd_p, d_wr_p);113out:114 rtnl_unlock();115 return 0;116}117 118static int nfp_xdp_q_show(struct seq_file *file, void *data)119{120 return nfp_tx_q_show(file, data);121}122DEFINE_SHOW_ATTRIBUTE(nfp_xdp_q);123 124void nfp_net_debugfs_vnic_add(struct nfp_net *nn, struct dentry *ddir)125{126 struct dentry *queues, *tx, *rx, *xdp;127 char name[20];128 int i;129 130 if (IS_ERR_OR_NULL(nfp_dir))131 return;132 133 if (nfp_net_is_data_vnic(nn))134 sprintf(name, "vnic%d", nn->id);135 else136 strcpy(name, "ctrl-vnic");137 nn->debugfs_dir = debugfs_create_dir(name, ddir);138 139 /* Create queue debugging sub-tree */140 queues = debugfs_create_dir("queue", nn->debugfs_dir);141 142 rx = debugfs_create_dir("rx", queues);143 tx = debugfs_create_dir("tx", queues);144 xdp = debugfs_create_dir("xdp", queues);145 146 for (i = 0; i < min(nn->max_rx_rings, nn->max_r_vecs); i++) {147 sprintf(name, "%d", i);148 debugfs_create_file(name, 0400, rx,149 &nn->r_vecs[i], &nfp_rx_q_fops);150 debugfs_create_file(name, 0400, xdp,151 &nn->r_vecs[i], &nfp_xdp_q_fops);152 }153 154 for (i = 0; i < min(nn->max_tx_rings, nn->max_r_vecs); i++) {155 sprintf(name, "%d", i);156 debugfs_create_file(name, 0400, tx,157 &nn->r_vecs[i], &nfp_tx_q_fops);158 }159}160 161struct dentry *nfp_net_debugfs_device_add(struct pci_dev *pdev)162{163 return debugfs_create_dir(pci_name(pdev), nfp_dir);164}165 166void nfp_net_debugfs_dir_clean(struct dentry **dir)167{168 debugfs_remove_recursive(*dir);169 *dir = NULL;170}171 172void nfp_net_debugfs_create(void)173{174 nfp_dir = debugfs_create_dir("nfp_net", NULL);175}176 177void nfp_net_debugfs_destroy(void)178{179 debugfs_remove_recursive(nfp_dir);180 nfp_dir = NULL;181}182