drivers/net/ethernet/pensando/ionic/ionic_debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
   3
   4 #include <linux/pci.h>
   5 #include <linux/netdevice.h>
   6
   7 #include "ionic.h"
   8 #include "ionic_bus.h"
   9 #include "ionic_lif.h"
  10 #include "ionic_debugfs.h"
  11
  12 #ifdef CONFIG_DEBUG_FS
  13
  14 static struct dentry *ionic_dir;
  15
  16 void ionic_debugfs_create(void)
  17 {
  18         ionic_dir = debugfs_create_dir(IONIC_DRV_NAME, NULL);
  19 }
  20
  21 void ionic_debugfs_destroy(void)
  22 {
  23         debugfs_remove_recursive(ionic_dir);
  24 }
  25
  26 void ionic_debugfs_add_dev(struct ionic *ionic)
  27 {
  28         ionic->dentry = debugfs_create_dir(ionic_bus_info(ionic), ionic_dir);
  29 }
  30
  31 void ionic_debugfs_del_dev(struct ionic *ionic)
  32 {
  33         debugfs_remove_recursive(ionic->dentry);
  34         ionic->dentry = NULL;
  35 }
  36
  37 static int identity_show(struct seq_file *seq, void *v)
  38 {
  39         struct ionic *ionic = seq->private;
  40         struct ionic_identity *ident;
  41
  42         ident = &ionic->ident;
  43
  44         seq_printf(seq, "nlifs:            %d\n", ident->dev.nlifs);
  45         seq_printf(seq, "nintrs:           %d\n", ident->dev.nintrs);
  46         seq_printf(seq, "ndbpgs_per_lif:   %d\n", ident->dev.ndbpgs_per_lif);
  47         seq_printf(seq, "intr_coal_mult:   %d\n", ident->dev.intr_coal_mult);
  48         seq_printf(seq, "intr_coal_div:    %d\n", ident->dev.intr_coal_div);
  49
  50         seq_printf(seq, "max_ucast_filters:  %d\n", ident->lif.eth.max_ucast_filters);
  51         seq_printf(seq, "max_mcast_filters:  %d\n", ident->lif.eth.max_mcast_filters);
  52
  53         return 0;
  54 }
  55 DEFINE_SHOW_ATTRIBUTE(identity);
  56
  57 void ionic_debugfs_add_ident(struct ionic *ionic)
  58 {
  59         debugfs_create_file("identity", 0400, ionic->dentry,
  60                             ionic, &identity_fops);
  61 }
  62
  63 void ionic_debugfs_add_sizes(struct ionic *ionic)
  64 {
  65         debugfs_create_u32("nlifs", 0400, ionic->dentry,
  66                            (u32 *)&ionic->ident.dev.nlifs);
  67         debugfs_create_u32("nintrs", 0400, ionic->dentry, &ionic->nintrs);
  68
  69         debugfs_create_u32("ntxqs_per_lif", 0400, ionic->dentry,
  70                            (u32 *)&ionic->ident.lif.eth.config.queue_count[IONIC_QTYPE_TXQ]);
  71         debugfs_create_u32("nrxqs_per_lif", 0400, ionic->dentry,
  72                            (u32 *)&ionic->ident.lif.eth.config.queue_count[IONIC_QTYPE_RXQ]);
  73 }
  74
  75 static int q_tail_show(struct seq_file *seq, void *v)
  76 {
  77         struct ionic_queue *q = seq->private;
  78
  79         seq_printf(seq, "%d\n", q->tail_idx);
  80
  81         return 0;
  82 }
  83 DEFINE_SHOW_ATTRIBUTE(q_tail);
  84
  85 static int q_head_show(struct seq_file *seq, void *v)
  86 {
  87         struct ionic_queue *q = seq->private;
  88
  89         seq_printf(seq, "%d\n", q->head_idx);
  90
  91         return 0;
  92 }
  93 DEFINE_SHOW_ATTRIBUTE(q_head);
  94
  95 static int cq_tail_show(struct seq_file *seq, void *v)
  96 {
  97         struct ionic_cq *cq = seq->private;
  98
  99         seq_printf(seq, "%d\n", cq->tail_idx);
 100
 101         return 0;
 102 }
 103 DEFINE_SHOW_ATTRIBUTE(cq_tail);
 104
 105 static const struct debugfs_reg32 intr_ctrl_regs[] = {
 106         { .name = "coal_init", .offset = 0, },
 107         { .name = "mask", .offset = 4, },
 108         { .name = "credits", .offset = 8, },
 109         { .name = "mask_on_assert", .offset = 12, },
 110         { .name = "coal_timer", .offset = 16, },
 111 };
 112
 113 void ionic_debugfs_add_qcq(struct ionic_lif *lif, struct ionic_qcq *qcq)
 114 {
 115         struct dentry *qcq_dentry, *q_dentry, *cq_dentry;
 116         struct dentry *intr_dentry, *stats_dentry;
 117         struct ionic_dev *idev = &lif->ionic->idev;
 118         struct debugfs_regset32 *intr_ctrl_regset;
 119         struct ionic_intr_info *intr = &qcq->intr;
 120         struct debugfs_blob_wrapper *desc_blob;
 121         struct device *dev = lif->ionic->dev;
 122         struct ionic_queue *q = &qcq->q;
 123         struct ionic_cq *cq = &qcq->cq;
 124
 125         qcq_dentry = debugfs_create_dir(q->name, lif->dentry);
 126         if (IS_ERR_OR_NULL(qcq_dentry))
 127                 return;
 128         qcq->dentry = qcq_dentry;
 129
 130         debugfs_create_x64("q_base_pa", 0400, qcq_dentry, &qcq->q_base_pa);
 131         debugfs_create_x32("q_size", 0400, qcq_dentry, &qcq->q_size);
 132         debugfs_create_x64("cq_base_pa", 0400, qcq_dentry, &qcq->cq_base_pa);
 133         debugfs_create_x32("cq_size", 0400, qcq_dentry, &qcq->cq_size);
 134         debugfs_create_x64("sg_base_pa", 0400, qcq_dentry, &qcq->sg_base_pa);
 135         debugfs_create_x32("sg_size", 0400, qcq_dentry, &qcq->sg_size);
 136
 137         q_dentry = debugfs_create_dir("q", qcq->dentry);
 138
 139         debugfs_create_u32("index", 0400, q_dentry, &q->index);
 140         debugfs_create_u32("num_descs", 0400, q_dentry, &q->num_descs);
 141         debugfs_create_u32("desc_size", 0400, q_dentry, &q->desc_size);
 142         debugfs_create_u32("pid", 0400, q_dentry, &q->pid);
 143         debugfs_create_u32("qid", 0400, q_dentry, &q->hw_index);
 144         debugfs_create_u32("qtype", 0400, q_dentry, &q->hw_type);
 145         debugfs_create_u64("drop", 0400, q_dentry, &q->drop);
 146         debugfs_create_u64("stop", 0400, q_dentry, &q->stop);
 147         debugfs_create_u64("wake", 0400, q_dentry, &q->wake);
 148
 149         debugfs_create_file("tail", 0400, q_dentry, q, &q_tail_fops);
 150         debugfs_create_file("head", 0400, q_dentry, q, &q_head_fops);
 151
 152         desc_blob = devm_kzalloc(dev, sizeof(*desc_blob), GFP_KERNEL);
 153         if (!desc_blob)
 154                 return;
 155         desc_blob->data = q->base;
 156         desc_blob->size = (unsigned long)q->num_descs * q->desc_size;
 157         debugfs_create_blob("desc_blob", 0400, q_dentry, desc_blob);
 158
 159         if (qcq->flags & IONIC_QCQ_F_SG) {
 160                 desc_blob = devm_kzalloc(dev, sizeof(*desc_blob), GFP_KERNEL);
 161                 if (!desc_blob)
 162                         return;
 163                 desc_blob->data = q->sg_base;
 164                 desc_blob->size = (unsigned long)q->num_descs * q->sg_desc_size;
 165                 debugfs_create_blob("sg_desc_blob", 0400, q_dentry,
 166                                     desc_blob);
 167         }
 168
 169         cq_dentry = debugfs_create_dir("cq", qcq->dentry);
 170
 171         debugfs_create_x64("base_pa", 0400, cq_dentry, &cq->base_pa);
 172         debugfs_create_u32("num_descs", 0400, cq_dentry, &cq->num_descs);
 173         debugfs_create_u32("desc_size", 0400, cq_dentry, &cq->desc_size);
 174         debugfs_create_bool("done_color", 0400, cq_dentry, &cq->done_color);
 175
 176         debugfs_create_file("tail", 0400, cq_dentry, cq, &cq_tail_fops);
 177
 178         desc_blob = devm_kzalloc(dev, sizeof(*desc_blob), GFP_KERNEL);
 179         if (!desc_blob)
 180                 return;
 181         desc_blob->data = cq->base;
 182         desc_blob->size = (unsigned long)cq->num_descs * cq->desc_size;
 183         debugfs_create_blob("desc_blob", 0400, cq_dentry, desc_blob);
 184
 185         if (qcq->flags & IONIC_QCQ_F_INTR) {
 186                 intr_dentry = debugfs_create_dir("intr", qcq->dentry);
 187
 188                 debugfs_create_u32("index", 0400, intr_dentry,
 189                                    &intr->index);
 190                 debugfs_create_u32("vector", 0400, intr_dentry,
 191                                    &intr->vector);
 192                 debugfs_create_u32("dim_coal_hw", 0400, intr_dentry,
 193                                    &intr->dim_coal_hw);
 194
 195                 intr_ctrl_regset = devm_kzalloc(dev, sizeof(*intr_ctrl_regset),
 196                                                 GFP_KERNEL);
 197                 if (!intr_ctrl_regset)
 198                         return;
 199                 intr_ctrl_regset->regs = intr_ctrl_regs;
 200                 intr_ctrl_regset->nregs = ARRAY_SIZE(intr_ctrl_regs);
 201                 intr_ctrl_regset->base = &idev->intr_ctrl[intr->index];
 202
 203                 debugfs_create_regset32("intr_ctrl", 0400, intr_dentry,
 204                                         intr_ctrl_regset);
 205         }
 206
 207         if (qcq->flags & IONIC_QCQ_F_NOTIFYQ) {
 208                 stats_dentry = debugfs_create_dir("notifyblock", qcq->dentry);
 209
 210                 debugfs_create_u64("eid", 0400, stats_dentry,
 211                                    (u64 *)&lif->info->status.eid);
 212                 debugfs_create_u16("link_status", 0400, stats_dentry,
 213                                    (u16 *)&lif->info->status.link_status);
 214                 debugfs_create_u32("link_speed", 0400, stats_dentry,
 215                                    (u32 *)&lif->info->status.link_speed);
 216                 debugfs_create_u16("link_down_count", 0400, stats_dentry,
 217                                    (u16 *)&lif->info->status.link_down_count);
 218         }
 219 }
 220
 221 static int netdev_show(struct seq_file *seq, void *v)
 222 {
 223         struct net_device *netdev = seq->private;
 224
 225         seq_printf(seq, "%s\n", netdev->name);
 226
 227         return 0;
 228 }
 229 DEFINE_SHOW_ATTRIBUTE(netdev);
 230
 231 void ionic_debugfs_add_lif(struct ionic_lif *lif)
 232 {
 233         struct dentry *lif_dentry;
 234
 235         lif_dentry = debugfs_create_dir(lif->name, lif->ionic->dentry);
 236         if (IS_ERR_OR_NULL(lif_dentry))
 237                 return;
 238         lif->dentry = lif_dentry;
 239
 240         debugfs_create_file("netdev", 0400, lif->dentry,
 241                             lif->netdev, &netdev_fops);
 242 }
 243
 244 void ionic_debugfs_del_lif(struct ionic_lif *lif)
 245 {
 246         debugfs_remove_recursive(lif->dentry);
 247         lif->dentry = NULL;
 248 }
 249
 250 void ionic_debugfs_del_qcq(struct ionic_qcq *qcq)
 251 {
 252         debugfs_remove_recursive(qcq->dentry);
 253         qcq->dentry = NULL;
 254 }
 255
 256 #endif