xref: /linux/drivers/net/ethernet/amd/pds_core/debugfs.c (revision 9410645520e9b820069761f3450ef6661418e279)
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 
pdsc_debugfs_create(void)10 void pdsc_debugfs_create(void)
11 {
12 	pdsc_dir = debugfs_create_dir(PDS_CORE_DRV_NAME, NULL);
13 }
14 
pdsc_debugfs_destroy(void)15 void pdsc_debugfs_destroy(void)
16 {
17 	debugfs_remove_recursive(pdsc_dir);
18 }
19 
pdsc_debugfs_add_dev(struct pdsc * pdsc)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 
pdsc_debugfs_del_dev(struct pdsc * pdsc)27 void pdsc_debugfs_del_dev(struct pdsc *pdsc)
28 {
29 	debugfs_remove_recursive(pdsc->dentry);
30 	pdsc->dentry = NULL;
31 }
32 
identity_show(struct seq_file * seq,void * v)33 static int identity_show(struct seq_file *seq, void *v)
34 {
35 	struct pds_core_dev_identity *ident;
36 	struct pdsc *pdsc = seq->private;
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 
pdsc_debugfs_add_ident(struct pdsc * pdsc)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 
viftype_show(struct seq_file * seq,void * v)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 
pdsc_debugfs_add_viftype(struct pdsc * pdsc)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 
pdsc_debugfs_add_qcq(struct pdsc * pdsc,struct pdsc_qcq * qcq)107 void pdsc_debugfs_add_qcq(struct pdsc *pdsc, struct pdsc_qcq *qcq)
108 {
109 	struct dentry *qcq_dentry, *q_dentry, *cq_dentry, *intr_dentry;
110 	struct debugfs_regset32 *intr_ctrl_regset;
111 	struct pdsc_queue *q = &qcq->q;
112 	struct pdsc_cq *cq = &qcq->cq;
113 
114 	qcq_dentry = debugfs_create_dir(q->name, pdsc->dentry);
115 	if (IS_ERR(qcq_dentry))
116 		return;
117 	qcq->dentry = qcq_dentry;
118 
119 	debugfs_create_x64("q_base_pa", 0400, qcq_dentry, &qcq->q_base_pa);
120 	debugfs_create_x32("q_size", 0400, qcq_dentry, &qcq->q_size);
121 	debugfs_create_x64("cq_base_pa", 0400, qcq_dentry, &qcq->cq_base_pa);
122 	debugfs_create_x32("cq_size", 0400, qcq_dentry, &qcq->cq_size);
123 	debugfs_create_x32("accum_work", 0400, qcq_dentry, &qcq->accum_work);
124 
125 	q_dentry = debugfs_create_dir("q", qcq->dentry);
126 	if (IS_ERR(q_dentry))
127 		return;
128 
129 	debugfs_create_u32("index", 0400, q_dentry, &q->index);
130 	debugfs_create_u32("num_descs", 0400, q_dentry, &q->num_descs);
131 	debugfs_create_u32("desc_size", 0400, q_dentry, &q->desc_size);
132 	debugfs_create_u32("pid", 0400, q_dentry, &q->pid);
133 
134 	debugfs_create_u16("tail", 0400, q_dentry, &q->tail_idx);
135 	debugfs_create_u16("head", 0400, q_dentry, &q->head_idx);
136 
137 	cq_dentry = debugfs_create_dir("cq", qcq->dentry);
138 	if (IS_ERR(cq_dentry))
139 		return;
140 
141 	debugfs_create_x64("base_pa", 0400, cq_dentry, &cq->base_pa);
142 	debugfs_create_u32("num_descs", 0400, cq_dentry, &cq->num_descs);
143 	debugfs_create_u32("desc_size", 0400, cq_dentry, &cq->desc_size);
144 	debugfs_create_bool("done_color", 0400, cq_dentry, &cq->done_color);
145 	debugfs_create_u16("tail", 0400, cq_dentry, &cq->tail_idx);
146 
147 	if (qcq->flags & PDS_CORE_QCQ_F_INTR) {
148 		struct pdsc_intr_info *intr = &pdsc->intr_info[qcq->intx];
149 
150 		intr_dentry = debugfs_create_dir("intr", qcq->dentry);
151 		if (IS_ERR(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 
pdsc_debugfs_del_qcq(struct pdsc_qcq * qcq)170 void pdsc_debugfs_del_qcq(struct pdsc_qcq *qcq)
171 {
172 	debugfs_remove_recursive(qcq->dentry);
173 	qcq->dentry = NULL;
174 }
175