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         /* This file will already exist in the reset flow */
  68         if (debugfs_lookup("identity", pdsc->dentry))
  69                 return;
  70
  71         debugfs_create_file("identity", 0400, pdsc->dentry,
  72                             pdsc, &identity_fops);
  73 }
  74
  75 static int viftype_show(struct seq_file *seq, void *v)
  76 {
  77         struct pdsc *pdsc = seq->private;
  78         int vt;
  79
  80         for (vt = 0; vt < PDS_DEV_TYPE_MAX; vt++) {
  81                 if (!pdsc->viftype_status[vt].name)
  82                         continue;
  83
  84                 seq_printf(seq, "%s\t%d supported %d enabled\n",
  85                            pdsc->viftype_status[vt].name,
  86                            pdsc->viftype_status[vt].supported,
  87                            pdsc->viftype_status[vt].enabled);
  88         }
  89         return 0;
  90 }
  91 DEFINE_SHOW_ATTRIBUTE(viftype);
  92
  93 void pdsc_debugfs_add_viftype(struct pdsc *pdsc)
  94 {
  95         debugfs_create_file("viftypes", 0400, pdsc->dentry,
  96                             pdsc, &viftype_fops);
  97 }
  98
  99 static const struct debugfs_reg32 intr_ctrl_regs[] = {
 100         { .name = "coal_init", .offset = 0, },
 101         { .name = "mask", .offset = 4, },
 102         { .name = "credits", .offset = 8, },
 103         { .name = "mask_on_assert", .offset = 12, },
 104         { .name = "coal_timer", .offset = 16, },
 105 };
 106
 107 void pdsc_debugfs_add_qcq(struct pdsc *pdsc, struct pdsc_qcq *qcq)
 108 {
 109         struct dentry *qcq_dentry, *q_dentry, *cq_dentry;
 110         struct dentry *intr_dentry;
 111         struct debugfs_regset32 *intr_ctrl_regset;
 112         struct pdsc_intr_info *intr = &pdsc->intr_info[qcq->intx];
 113         struct pdsc_queue *q = &qcq->q;
 114         struct pdsc_cq *cq = &qcq->cq;
 115
 116         qcq_dentry = debugfs_create_dir(q->name, pdsc->dentry);
 117         if (IS_ERR_OR_NULL(qcq_dentry))
 118                 return;
 119         qcq->dentry = qcq_dentry;
 120
 121         debugfs_create_x64("q_base_pa", 0400, qcq_dentry, &qcq->q_base_pa);
 122         debugfs_create_x32("q_size", 0400, qcq_dentry, &qcq->q_size);
 123         debugfs_create_x64("cq_base_pa", 0400, qcq_dentry, &qcq->cq_base_pa);
 124         debugfs_create_x32("cq_size", 0400, qcq_dentry, &qcq->cq_size);
 125         debugfs_create_x32("accum_work", 0400, qcq_dentry, &qcq->accum_work);
 126
 127         q_dentry = debugfs_create_dir("q", qcq->dentry);
 128         if (IS_ERR_OR_NULL(q_dentry))
 129                 return;
 130
 131         debugfs_create_u32("index", 0400, q_dentry, &q->index);
 132         debugfs_create_u32("num_descs", 0400, q_dentry, &q->num_descs);
 133         debugfs_create_u32("desc_size", 0400, q_dentry, &q->desc_size);
 134         debugfs_create_u32("pid", 0400, q_dentry, &q->pid);
 135
 136         debugfs_create_u16("tail", 0400, q_dentry, &q->tail_idx);
 137         debugfs_create_u16("head", 0400, q_dentry, &q->head_idx);
 138
 139         cq_dentry = debugfs_create_dir("cq", qcq->dentry);
 140         if (IS_ERR_OR_NULL(cq_dentry))
 141                 return;
 142
 143         debugfs_create_x64("base_pa", 0400, cq_dentry, &cq->base_pa);
 144         debugfs_create_u32("num_descs", 0400, cq_dentry, &cq->num_descs);
 145         debugfs_create_u32("desc_size", 0400, cq_dentry, &cq->desc_size);
 146         debugfs_create_bool("done_color", 0400, cq_dentry, &cq->done_color);
 147         debugfs_create_u16("tail", 0400, cq_dentry, &cq->tail_idx);
 148
 149         if (qcq->flags & PDS_CORE_QCQ_F_INTR) {
 150                 intr_dentry = debugfs_create_dir("intr", qcq->dentry);
 151                 if (IS_ERR_OR_NULL(intr_dentry))
 152                         return;
 153
 154                 debugfs_create_u32("index", 0400, intr_dentry, &intr->index);
 155                 debugfs_create_u32("vector", 0400, intr_dentry, &intr->vector);
 156
 157                 intr_ctrl_regset = kzalloc(sizeof(*intr_ctrl_regset),
 158                                            GFP_KERNEL);
 159                 if (!intr_ctrl_regset)
 160                         return;
 161                 intr_ctrl_regset->regs = intr_ctrl_regs;
 162                 intr_ctrl_regset->nregs = ARRAY_SIZE(intr_ctrl_regs);
 163                 intr_ctrl_regset->base = &pdsc->intr_ctrl[intr->index];
 164
 165                 debugfs_create_regset32("intr_ctrl", 0400, intr_dentry,
 166                                         intr_ctrl_regset);
 167         }
 168 };
 169
 170 void pdsc_debugfs_del_qcq(struct pdsc_qcq *qcq)
 171 {
 172         debugfs_remove_recursive(qcq->dentry);
 173         qcq->dentry = NULL;
 174 }