drivers/net/ethernet/amd/pds_core/debugfs.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2023 Advanced Micro Devices, Inc */
   3
   4 #include <linux/pci.h>
   5
   6 #include "core.h"
   7
   8 static struct dentry *pdsc_dir;
   9
  10 void pdsc_debugfs_create(void)
  11 {
  12         pdsc_dir = debugfs_create_dir(PDS_CORE_DRV_NAME, NULL);
  13 }
  14
  15 void pdsc_debugfs_destroy(void)
  16 {
  17         debugfs_remove_recursive(pdsc_dir);
  18 }
  19
  20 void pdsc_debugfs_add_dev(struct pdsc *pdsc)
  21 {
  22         pdsc->dentry = debugfs_create_dir(pci_name(pdsc->pdev), pdsc_dir);
  23
  24         debugfs_create_ulong("state", 0400, pdsc->dentry, &pdsc->state);
  25 }
  26
  27 void pdsc_debugfs_del_dev(struct pdsc *pdsc)
  28 {
  29         debugfs_remove_recursive(pdsc->dentry);
  30         pdsc->dentry = NULL;
  31 }
  32
  33 static int identity_show(struct seq_file *seq, void *v)
  34 {
  35         struct pdsc *pdsc = seq->private;
  36         struct pds_core_dev_identity *ident;
  37         int vt;
  38
  39         ident = &pdsc->dev_ident;
  40
  41         seq_printf(seq, "fw_heartbeat:     0x%x\n",
  42                    ioread32(&pdsc->info_regs->fw_heartbeat));
  43
  44         seq_printf(seq, "nlifs:            %d\n",
  45                    le32_to_cpu(ident->nlifs));
  46         seq_printf(seq, "nintrs:           %d\n",
  47                    le32_to_cpu(ident->nintrs));
  48         seq_printf(seq, "ndbpgs_per_lif:   %d\n",
  49                    le32_to_cpu(ident->ndbpgs_per_lif));
  50         seq_printf(seq, "intr_coal_mult:   %d\n",
  51                    le32_to_cpu(ident->intr_coal_mult));
  52         seq_printf(seq, "intr_coal_div:    %d\n",
  53                    le32_to_cpu(ident->intr_coal_div));
  54
  55         seq_puts(seq, "vif_types:        ");
  56         for (vt = 0; vt < PDS_DEV_TYPE_MAX; vt++)
  57                 seq_printf(seq, "%d ",
  58                            le16_to_cpu(pdsc->dev_ident.vif_types[vt]));
  59         seq_puts(seq, "\n");
  60
  61         return 0;
  62 }
  63 DEFINE_SHOW_ATTRIBUTE(identity);
  64
  65 void pdsc_debugfs_add_ident(struct pdsc *pdsc)
  66 {
  67         debugfs_create_file("identity", 0400, pdsc->dentry,
  68                             pdsc, &identity_fops);
  69 }
  70
  71 static int viftype_show(struct seq_file *seq, void *v)
  72 {
  73         struct pdsc *pdsc = seq->private;
  74         int vt;
  75
  76         for (vt = 0; vt < PDS_DEV_TYPE_MAX; vt++) {
  77                 if (!pdsc->viftype_status[vt].name)
  78                         continue;
  79
  80                 seq_printf(seq, "%s\t%d supported %d enabled\n",
  81                            pdsc->viftype_status[vt].name,
  82                            pdsc->viftype_status[vt].supported,
  83                            pdsc->viftype_status[vt].enabled);
  84         }
  85         return 0;
  86 }
  87 DEFINE_SHOW_ATTRIBUTE(viftype);
  88
  89 void pdsc_debugfs_add_viftype(struct pdsc *pdsc)
  90 {
  91         debugfs_create_file("viftypes", 0400, pdsc->dentry,
  92                             pdsc, &viftype_fops);
  93 }
  94
  95 static const struct debugfs_reg32 intr_ctrl_regs[] = {
  96         { .name = "coal_init", .offset = 0, },
  97         { .name = "mask", .offset = 4, },
  98         { .name = "credits", .offset = 8, },
  99         { .name = "mask_on_assert", .offset = 12, },
 100         { .name = "coal_timer", .offset = 16, },
 101 };
 102
 103 void pdsc_debugfs_add_qcq(struct pdsc *pdsc, struct pdsc_qcq *qcq)
 104 {
 105         struct dentry *qcq_dentry, *q_dentry, *cq_dentry;
 106         struct dentry *intr_dentry;
 107         struct debugfs_regset32 *intr_ctrl_regset;
 108         struct pdsc_intr_info *intr = &pdsc->intr_info[qcq->intx];
 109         struct pdsc_queue *q = &qcq->q;
 110         struct pdsc_cq *cq = &qcq->cq;
 111
 112         qcq_dentry = debugfs_create_dir(q->name, pdsc->dentry);
 113         if (IS_ERR_OR_NULL(qcq_dentry))
 114                 return;
 115         qcq->dentry = qcq_dentry;
 116
 117         debugfs_create_x64("q_base_pa", 0400, qcq_dentry, &qcq->q_base_pa);
 118         debugfs_create_x32("q_size", 0400, qcq_dentry, &qcq->q_size);
 119         debugfs_create_x64("cq_base_pa", 0400, qcq_dentry, &qcq->cq_base_pa);
 120         debugfs_create_x32("cq_size", 0400, qcq_dentry, &qcq->cq_size);
 121         debugfs_create_x32("accum_work", 0400, qcq_dentry, &qcq->accum_work);
 122
 123         q_dentry = debugfs_create_dir("q", qcq->dentry);
 124         if (IS_ERR_OR_NULL(q_dentry))
 125                 return;
 126
 127         debugfs_create_u32("index", 0400, q_dentry, &q->index);
 128         debugfs_create_u32("num_descs", 0400, q_dentry, &q->num_descs);
 129         debugfs_create_u32("desc_size", 0400, q_dentry, &q->desc_size);
 130         debugfs_create_u32("pid", 0400, q_dentry, &q->pid);
 131
 132         debugfs_create_u16("tail", 0400, q_dentry, &q->tail_idx);
 133         debugfs_create_u16("head", 0400, q_dentry, &q->head_idx);
 134
 135         cq_dentry = debugfs_create_dir("cq", qcq->dentry);
 136         if (IS_ERR_OR_NULL(cq_dentry))
 137                 return;
 138
 139         debugfs_create_x64("base_pa", 0400, cq_dentry, &cq->base_pa);
 140         debugfs_create_u32("num_descs", 0400, cq_dentry, &cq->num_descs);
 141         debugfs_create_u32("desc_size", 0400, cq_dentry, &cq->desc_size);
 142         debugfs_create_bool("done_color", 0400, cq_dentry, &cq->done_color);
 143         debugfs_create_u16("tail", 0400, cq_dentry, &cq->tail_idx);
 144
 145         if (qcq->flags & PDS_CORE_QCQ_F_INTR) {
 146                 intr_dentry = debugfs_create_dir("intr", qcq->dentry);
 147                 if (IS_ERR_OR_NULL(intr_dentry))
 148                         return;
 149
 150                 debugfs_create_u32("index", 0400, intr_dentry, &intr->index);
 151                 debugfs_create_u32("vector", 0400, intr_dentry, &intr->vector);
 152
 153                 intr_ctrl_regset = kzalloc(sizeof(*intr_ctrl_regset),
 154                                            GFP_KERNEL);
 155                 if (!intr_ctrl_regset)
 156                         return;
 157                 intr_ctrl_regset->regs = intr_ctrl_regs;
 158                 intr_ctrl_regset->nregs = ARRAY_SIZE(intr_ctrl_regs);
 159                 intr_ctrl_regset->base = &pdsc->intr_ctrl[intr->index];
 160
 161                 debugfs_create_regset32("intr_ctrl", 0400, intr_dentry,
 162                                         intr_ctrl_regset);
 163         }
 164 };
 165
 166 void pdsc_debugfs_del_qcq(struct pdsc_qcq *qcq)
 167 {
 168         debugfs_remove_recursive(qcq->dentry);
 169         qcq->dentry = NULL;
 170 }