// SPDX-License-Identifier: GPL-2.0
/*
* Driver for Marvell PPv2 network controller for Armada 375 SoC.
*
* Copyright (C) 2018 Marvell
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/debugfs.h>
#include "mvpp2.h"
#include "mvpp2_prs.h"
#include "mvpp2_cls.h"
struct mvpp2_dbgfs_prs_entry {
int tid;
struct mvpp2 *priv;
};
struct mvpp2_dbgfs_c2_entry {
int id;
struct mvpp2 *priv;
};
struct mvpp2_dbgfs_flow_entry {
int flow;
struct mvpp2 *priv;
};
struct mvpp2_dbgfs_flow_tbl_entry {
int id;
struct mvpp2 *priv;
};
struct mvpp2_dbgfs_port_flow_entry {
struct mvpp2_port *port;
struct mvpp2_dbgfs_flow_entry *dbg_fe;
};
struct mvpp2_dbgfs_entries {
/* Entries for Header Parser debug info */
struct mvpp2_dbgfs_prs_entry prs_entries[MVPP2_PRS_TCAM_SRAM_SIZE];
/* Entries for Classifier C2 engine debug info */
struct mvpp2_dbgfs_c2_entry c2_entries[MVPP22_CLS_C2_N_ENTRIES];
/* Entries for Classifier Flow Table debug info */
struct mvpp2_dbgfs_flow_tbl_entry flt_entries[MVPP2_CLS_FLOWS_TBL_SIZE];
/* Entries for Classifier flows debug info */
struct mvpp2_dbgfs_flow_entry flow_entries[MVPP2_N_PRS_FLOWS];
/* Entries for per-port flows debug info */
struct mvpp2_dbgfs_port_flow_entry port_flow_entries[MVPP2_MAX_PORTS];
};
static int mvpp2_dbgfs_flow_flt_hits_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_flow_tbl_entry *entry = s->private;
u32 hits = mvpp2_cls_flow_hits(entry->priv, entry->id);
seq_printf(s, "%u\n", hits);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_flt_hits);
static int mvpp2_dbgfs_flow_dec_hits_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_flow_entry *entry = s->private;
u32 hits = mvpp2_cls_lookup_hits(entry->priv, entry->flow);
seq_printf(s, "%u\n", hits);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_dec_hits);
static int mvpp2_dbgfs_flow_type_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_flow_entry *entry = s->private;
const struct mvpp2_cls_flow *f;
const char *flow_name;
f = mvpp2_cls_flow_get(entry->flow);
if (!f)
return -EINVAL;
switch (f->flow_type) {
case IPV4_FLOW:
flow_name = "ipv4";
break;
case IPV6_FLOW:
flow_name = "ipv6";
break;
case TCP_V4_FLOW:
flow_name = "tcp4";
break;
case TCP_V6_FLOW:
flow_name = "tcp6";
break;
case UDP_V4_FLOW:
flow_name = "udp4";
break;
case UDP_V6_FLOW:
flow_name = "udp6";
break;
default:
flow_name = "other";
}
seq_printf(s, "%s\n", flow_name);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_type);
static int mvpp2_dbgfs_flow_id_show(struct seq_file *s, void *unused)
{
const struct mvpp2_dbgfs_flow_entry *entry = s->private;
const struct mvpp2_cls_flow *f;
f = mvpp2_cls_flow_get(entry->flow);
if (!f)
return -EINVAL;
seq_printf(s, "%d\n", f->flow_id);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_id);
static int mvpp2_dbgfs_port_flow_hash_opt_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_port_flow_entry *entry = s->private;
struct mvpp2_port *port = entry->port;
struct mvpp2_cls_flow_entry fe;
const struct mvpp2_cls_flow *f;
int flow_index;
u16 hash_opts;
f = mvpp2_cls_flow_get(entry->dbg_fe->flow);
if (!f)
return -EINVAL;
flow_index = MVPP2_CLS_FLT_HASH_ENTRY(entry->port->id, f->flow_id);
mvpp2_cls_flow_read(port->priv, flow_index, &fe);
hash_opts = mvpp2_flow_get_hek_fields(&fe);
seq_printf(s, "0x%04x\n", hash_opts);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_port_flow_hash_opt);
static int mvpp2_dbgfs_port_flow_engine_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_port_flow_entry *entry = s->private;
struct mvpp2_port *port = entry->port;
struct mvpp2_cls_flow_entry fe;
const struct mvpp2_cls_flow *f;
int flow_index, engine;
f = mvpp2_cls_flow_get(entry->dbg_fe->flow);
if (!f)
return -EINVAL;
flow_index = MVPP2_CLS_FLT_HASH_ENTRY(entry->port->id, f->flow_id);
mvpp2_cls_flow_read(port->priv, flow_index, &fe);
engine = mvpp2_cls_flow_eng_get(&fe);
seq_printf(s, "%d\n", engine);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_port_flow_engine);
static int mvpp2_dbgfs_flow_c2_hits_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_c2_entry *entry = s->private;
u32 hits;
hits = mvpp2_cls_c2_hit_count(entry->priv, entry->id);
seq_printf(s, "%u\n", hits);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_c2_hits);
static int mvpp2_dbgfs_flow_c2_rxq_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_c2_entry *entry = s->private;
struct mvpp2_cls_c2_entry c2;
u8 qh, ql;
mvpp2_cls_c2_read(entry->priv, entry->id, &c2);
qh = (c2.attr[0] >> MVPP22_CLS_C2_ATTR0_QHIGH_OFFS) &
MVPP22_CLS_C2_ATTR0_QHIGH_MASK;
ql = (c2.attr[0] >> MVPP22_CLS_C2_ATTR0_QLOW_OFFS) &
MVPP22_CLS_C2_ATTR0_QLOW_MASK;
seq_printf(s, "%d\n", (qh << 3 | ql));
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_c2_rxq);
static int mvpp2_dbgfs_flow_c2_enable_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_c2_entry *entry = s->private;
struct mvpp2_cls_c2_entry c2;
int enabled;
mvpp2_cls_c2_read(entry->priv, entry->id, &c2);
enabled = !!(c2.attr[2] & MVPP22_CLS_C2_ATTR2_RSS_EN);
seq_printf(s, "%d\n", enabled);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_flow_c2_enable);
static int mvpp2_dbgfs_port_vid_show(struct seq_file *s, void *unused)
{
struct mvpp2_port *port = s->private;
unsigned char byte[2], enable[2];
struct mvpp2 *priv = port->priv;
struct mvpp2_prs_entry pe;
unsigned long pmap;
u16 rvid;
int tid;
for (tid = MVPP2_PRS_VID_PORT_FIRST(port->id);
tid <= MVPP2_PRS_VID_PORT_LAST(port->id); tid++) {
mvpp2_prs_init_from_hw(priv, &pe, tid);
pmap = mvpp2_prs_tcam_port_map_get(&pe);
if (!priv->prs_shadow[tid].valid)
continue;
if (!test_bit(port->id, &pmap))
continue;
mvpp2_prs_tcam_data_byte_get(&pe, 2, &byte[0], &enable[0]);
mvpp2_prs_tcam_data_byte_get(&pe, 3, &byte[1], &enable[1]);
rvid = ((byte[0] & 0xf) << 8) + byte[1];
seq_printf(s, "%u\n", rvid);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_port_vid);
static int mvpp2_dbgfs_port_parser_show(struct seq_file *s, void *unused)
{
struct mvpp2_port *port = s->private;
struct mvpp2 *priv = port->priv;
struct mvpp2_prs_entry pe;
unsigned long pmap;
int i;
for (i = 0; i < MVPP2_PRS_TCAM_SRAM_SIZE; i++) {
mvpp2_prs_init_from_hw(port->priv, &pe, i);
pmap = mvpp2_prs_tcam_port_map_get(&pe);
if (priv->prs_shadow[i].valid && test_bit(port->id, &pmap))
seq_printf(s, "%03d\n", i);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_port_parser);
static int mvpp2_dbgfs_filter_show(struct seq_file *s, void *unused)
{
struct mvpp2_port *port = s->private;
struct mvpp2 *priv = port->priv;
struct mvpp2_prs_entry pe;
unsigned long pmap;
int index, tid;
for (tid = MVPP2_PE_MAC_RANGE_START;
tid <= MVPP2_PE_MAC_RANGE_END; tid++) {
unsigned char da[ETH_ALEN], da_mask[ETH_ALEN];
if (!priv->prs_shadow[tid].valid ||
priv->prs_shadow[tid].lu != MVPP2_PRS_LU_MAC ||
priv->prs_shadow[tid].udf != MVPP2_PRS_UDF_MAC_DEF)
continue;
mvpp2_prs_init_from_hw(priv, &pe, tid);
pmap = mvpp2_prs_tcam_port_map_get(&pe);
/* We only want entries active on this port */
if (!test_bit(port->id, &pmap))
continue;
/* Read mac addr from entry */
for (index = 0; index < ETH_ALEN; index++)
mvpp2_prs_tcam_data_byte_get(&pe, index, &da[index],
&da_mask[index]);
seq_printf(s, "%pM\n", da);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_filter);
static int mvpp2_dbgfs_prs_lu_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
struct mvpp2 *priv = entry->priv;
seq_printf(s, "%x\n", priv->prs_shadow[entry->tid].lu);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_lu);
static int mvpp2_dbgfs_prs_pmap_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
struct mvpp2_prs_entry pe;
unsigned int pmap;
mvpp2_prs_init_from_hw(entry->priv, &pe, entry->tid);
pmap = mvpp2_prs_tcam_port_map_get(&pe);
pmap &= MVPP2_PRS_PORT_MASK;
seq_printf(s, "%02x\n", pmap);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_pmap);
static int mvpp2_dbgfs_prs_ai_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
struct mvpp2_prs_entry pe;
unsigned char ai, ai_mask;
mvpp2_prs_init_from_hw(entry->priv, &pe, entry->tid);
ai = pe.tcam[MVPP2_PRS_TCAM_AI_WORD] & MVPP2_PRS_AI_MASK;
ai_mask = (pe.tcam[MVPP2_PRS_TCAM_AI_WORD] >> 16) & MVPP2_PRS_AI_MASK;
seq_printf(s, "%02x %02x\n", ai, ai_mask);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_ai);
static int mvpp2_dbgfs_prs_hdata_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
struct mvpp2_prs_entry pe;
unsigned char data[8], mask[8];
int i;
mvpp2_prs_init_from_hw(entry->priv, &pe, entry->tid);
for (i = 0; i < 8; i++)
mvpp2_prs_tcam_data_byte_get(&pe, i, &data[i], &mask[i]);
seq_printf(s, "%*phN %*phN\n", 8, data, 8, mask);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_hdata);
static int mvpp2_dbgfs_prs_sram_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
struct mvpp2_prs_entry pe;
mvpp2_prs_init_from_hw(entry->priv, &pe, entry->tid);
seq_printf(s, "%*phN\n", 14, pe.sram);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_sram);
static int mvpp2_dbgfs_prs_hits_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
int val;
val = mvpp2_prs_hits(entry->priv, entry->tid);
if (val < 0)
return val;
seq_printf(s, "%d\n", val);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_hits);
static int mvpp2_dbgfs_prs_valid_show(struct seq_file *s, void *unused)
{
struct mvpp2_dbgfs_prs_entry *entry = s->private;
struct mvpp2 *priv = entry->priv;
int tid = entry->tid;
seq_printf(s, "%d\n", priv->prs_shadow[tid].valid ? 1 : 0);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(mvpp2_dbgfs_prs_valid);
static int mvpp2_dbgfs_flow_port_init(struct dentry *parent,
struct mvpp2_port *port,
struct mvpp2_dbgfs_flow_entry *entry)
{
struct mvpp2_dbgfs_port_flow_entry *port_entry;
struct dentry *port_dir;
port_dir = debugfs_create_dir(port->dev->name, parent);
port_entry = &port->priv->dbgfs_entries->port_flow_entries[port->id];
port_entry->port = port;
port_entry->dbg_fe = entry;
debugfs_create_file("hash_opts", 0444, port_dir, port_entry,
&mvpp2_dbgfs_port_flow_hash_opt_fops);
debugfs_create_file("engine", 0444, port_dir, port_entry,
&mvpp2_dbgfs_port_flow_engine_fops);
return 0;
}
static int mvpp2_dbgfs_flow_entry_init(struct dentry *parent,
struct mvpp2 *priv, int flow)
{
struct mvpp2_dbgfs_flow_entry *entry;
struct dentry *flow_entry_dir;
char flow_entry_name[10];
int i, ret;
sprintf(flow_entry_name, "%02d", flow);
flow_entry_dir = debugfs_create_dir(flow_entry_name, parent);
entry = &priv->dbgfs_entries->flow_entries[flow];
entry->flow = flow;
entry->priv = priv;
debugfs_create_file("dec_hits", 0444, flow_entry_dir, entry,
&mvpp2_dbgfs_flow_dec_hits_fops);
debugfs_create_file("type", 0444, flow_entry_dir, entry,
&mvpp2_dbgfs_flow_type_fops);
debugfs_create_file("id", 0444, flow_entry_dir, entry,
&mvpp2_dbgfs_flow_id_fops);
/* Create entry for each port */
for (i = 0; i < priv->port_count; i++) {
ret = mvpp2_dbgfs_flow_port_init(flow_entry_dir,
priv->port_list[i], entry);
if (ret)
return ret;
}
return 0;
}
static int mvpp2_dbgfs_flow_init(struct dentry *parent, struct mvpp2 *priv)
{
struct dentry *flow_dir;
int i, ret;
flow_dir = debugfs_create_dir("flows", parent);
for (i = 0; i < MVPP2_N_PRS_FLOWS; i++) {
ret = mvpp2_dbgfs_flow_entry_init(flow_dir, priv, i);
if (ret)
return ret;
}
return 0;
}
static int mvpp2_dbgfs_prs_entry_init(struct dentry *parent,
struct mvpp2 *priv, int tid)
{
struct mvpp2_dbgfs_prs_entry *entry;
struct dentry *prs_entry_dir;
char prs_entry_name[10];
if (tid >= MVPP2_PRS_TCAM_SRAM_SIZE)
return -EINVAL;
sprintf(prs_entry_name, "%03d", tid);
prs_entry_dir = debugfs_create_dir(prs_entry_name, parent);
entry = &priv->dbgfs_entries->prs_entries[tid];
entry->tid = tid;
entry->priv = priv;
/* Create each attr */
debugfs_create_file("sram", 0444, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_sram_fops);
debugfs_create_file("valid", 0644, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_valid_fops);
debugfs_create_file("lookup_id", 0644, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_lu_fops);
debugfs_create_file("ai", 0644, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_ai_fops);
debugfs_create_file("header_data", 0644, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_hdata_fops);
debugfs_create_file("hits", 0444, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_hits_fops);
debugfs_create_file("pmap", 0444, prs_entry_dir, entry,
&mvpp2_dbgfs_prs_pmap_fops);
return 0;
}
static int mvpp2_dbgfs_prs_init(struct dentry *parent, struct mvpp2 *priv)
{
struct dentry *prs_dir;
int i, ret;
prs_dir = debugfs_create_dir("parser", parent);
for (i = 0; i < MVPP2_PRS_TCAM_SRAM_SIZE; i++) {
ret = mvpp2_dbgfs_prs_entry_init(prs_dir, priv, i);
if (ret)
return ret;
}
return 0;
}
static int mvpp2_dbgfs_c2_entry_init(struct dentry *parent,
struct mvpp2 *priv, int id)
{
struct mvpp2_dbgfs_c2_entry *entry;
struct dentry *c2_entry_dir;
char c2_entry_name[10];
if (id >= MVPP22_CLS_C2_N_ENTRIES)
return -EINVAL;
sprintf(c2_entry_name, "%03d", id);
c2_entry_dir = debugfs_create_dir(c2_entry_name, parent);
entry = &priv->dbgfs_entries->c2_entries[id];
entry->id = id;
entry->priv = priv;
debugfs_create_file("hits", 0444, c2_entry_dir, entry,
&mvpp2_dbgfs_flow_c2_hits_fops);
debugfs_create_file("default_rxq", 0444, c2_entry_dir, entry,
&mvpp2_dbgfs_flow_c2_rxq_fops);
debugfs_create_file("rss_enable", 0444, c2_entry_dir, entry,
&mvpp2_dbgfs_flow_c2_enable_fops);
return 0;
}
static int mvpp2_dbgfs_flow_tbl_entry_init(struct dentry *parent,
struct mvpp2 *priv, int id)
{
struct mvpp2_dbgfs_flow_tbl_entry *entry;
struct dentry *flow_tbl_entry_dir;
char flow_tbl_entry_name[10];
if (id >= MVPP2_CLS_FLOWS_TBL_SIZE)
return -EINVAL;
sprintf(flow_tbl_entry_name, "%03d", id);
flow_tbl_entry_dir = debugfs_create_dir(flow_tbl_entry_name, parent);
entry = &priv->dbgfs_entries->flt_entries[id];
entry->id = id;
entry->priv = priv;
debugfs_create_file("hits", 0444, flow_tbl_entry_dir, entry,
&mvpp2_dbgfs_flow_flt_hits_fops);
return 0;
}
static int mvpp2_dbgfs_cls_init(struct dentry *parent, struct mvpp2 *priv)
{
struct dentry *cls_dir, *c2_dir, *flow_tbl_dir;
int i, ret;
cls_dir = debugfs_create_dir("classifier", parent);
c2_dir = debugfs_create_dir("c2", cls_dir);
for (i = 0; i < MVPP22_CLS_C2_N_ENTRIES; i++) {
ret = mvpp2_dbgfs_c2_entry_init(c2_dir, priv, i);
if (ret)
return ret;
}
flow_tbl_dir = debugfs_create_dir("flow_table", cls_dir);
for (i = 0; i < MVPP2_CLS_FLOWS_TBL_SIZE; i++) {
ret = mvpp2_dbgfs_flow_tbl_entry_init(flow_tbl_dir, priv, i);
if (ret)
return ret;
}
return 0;
}
static int mvpp2_dbgfs_port_init(struct dentry *parent,
struct mvpp2_port *port)
{
struct dentry *port_dir;
port_dir = debugfs_create_dir(port->dev->name, parent);
debugfs_create_file("parser_entries", 0444, port_dir, port,
&mvpp2_dbgfs_port_parser_fops);
debugfs_create_file("mac_filter", 0444, port_dir, port,
&mvpp2_dbgfs_filter_fops);
debugfs_create_file("vid_filter", 0444, port_dir, port,
&mvpp2_dbgfs_port_vid_fops);
return 0;
}
static struct dentry *mvpp2_root;
void mvpp2_dbgfs_exit(void)
{
debugfs_remove(mvpp2_root);
}
void mvpp2_dbgfs_cleanup(struct mvpp2 *priv)
{
debugfs_remove_recursive(priv->dbgfs_dir);
kfree(priv->dbgfs_entries);
}
void mvpp2_dbgfs_init(struct mvpp2 *priv, const char *name)
{
struct dentry *mvpp2_dir;
int ret, i;
if (!mvpp2_root)
mvpp2_root = debugfs_create_dir(MVPP2_DRIVER_NAME, NULL);
mvpp2_dir = debugfs_create_dir(name, mvpp2_root);
priv->dbgfs_dir = mvpp2_dir;
priv->dbgfs_entries = kzalloc(sizeof(*priv->dbgfs_entries), GFP_KERNEL);
if (!priv->dbgfs_entries)
goto err;
ret = mvpp2_dbgfs_prs_init(mvpp2_dir, priv);
if (ret)
goto err;
ret = mvpp2_dbgfs_cls_init(mvpp2_dir, priv);
if (ret)
goto err;
for (i = 0; i < priv->port_count; i++) {
ret = mvpp2_dbgfs_port_init(mvpp2_dir, priv->port_list[i]);
if (ret)
goto err;
}
ret = mvpp2_dbgfs_flow_init(mvpp2_dir, priv);
if (ret)
goto err;
return;
err:
mvpp2_dbgfs_cleanup(priv);
}
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