Commit 87c8cefb authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller

dsa: mv88e6xxx: Add debugfs interface for registers

Allow the contents of the registers to be shown in debugfs.
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 45dac1d6
...@@ -8,6 +8,7 @@ ...@@ -8,6 +8,7 @@
* (at your option) any later version. * (at your option) any later version.
*/ */
#include <linux/debugfs.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/etherdevice.h> #include <linux/etherdevice.h>
#include <linux/if_bridge.h> #include <linux/if_bridge.h>
...@@ -16,6 +17,7 @@ ...@@ -16,6 +17,7 @@
#include <linux/module.h> #include <linux/module.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
#include <linux/phy.h> #include <linux/phy.h>
#include <linux/seq_file.h>
#include <net/dsa.h> #include <net/dsa.h>
#include "mv88e6xxx.h" #include "mv88e6xxx.h"
...@@ -1601,9 +1603,50 @@ int mv88e6xxx_setup_ports(struct dsa_switch *ds) ...@@ -1601,9 +1603,50 @@ int mv88e6xxx_setup_ports(struct dsa_switch *ds)
return 0; return 0;
} }
static int mv88e6xxx_regs_show(struct seq_file *s, void *p)
{
struct dsa_switch *ds = s->private;
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
int reg, port;
seq_puts(s, " GLOBAL GLOBAL2 ");
for (port = 0 ; port < ps->num_ports; port++)
seq_printf(s, " %2d ", port);
seq_puts(s, "\n");
for (reg = 0; reg < 32; reg++) {
seq_printf(s, "%2x: ", reg);
seq_printf(s, " %4x %4x ",
mv88e6xxx_reg_read(ds, REG_GLOBAL, reg),
mv88e6xxx_reg_read(ds, REG_GLOBAL2, reg));
for (port = 0 ; port < ps->num_ports; port++)
seq_printf(s, "%4x ",
mv88e6xxx_reg_read(ds, REG_PORT(port), reg));
seq_puts(s, "\n");
}
return 0;
}
static int mv88e6xxx_regs_open(struct inode *inode, struct file *file)
{
return single_open(file, mv88e6xxx_regs_show, inode->i_private);
}
static const struct file_operations mv88e6xxx_regs_fops = {
.open = mv88e6xxx_regs_open,
.read = seq_read,
.llseek = no_llseek,
.release = single_release,
.owner = THIS_MODULE,
};
int mv88e6xxx_setup_common(struct dsa_switch *ds) int mv88e6xxx_setup_common(struct dsa_switch *ds)
{ {
struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
char *name;
mutex_init(&ps->smi_mutex); mutex_init(&ps->smi_mutex);
...@@ -1613,6 +1656,13 @@ int mv88e6xxx_setup_common(struct dsa_switch *ds) ...@@ -1613,6 +1656,13 @@ int mv88e6xxx_setup_common(struct dsa_switch *ds)
INIT_WORK(&ps->bridge_work, mv88e6xxx_bridge_work); INIT_WORK(&ps->bridge_work, mv88e6xxx_bridge_work);
name = kasprintf(GFP_KERNEL, "dsa%d", ds->index);
ps->dbgfs = debugfs_create_dir(name, NULL);
kfree(name);
debugfs_create_file("regs", S_IRUGO, ps->dbgfs, ds,
&mv88e6xxx_regs_fops);
return 0; return 0;
} }
......
...@@ -339,6 +339,8 @@ struct mv88e6xxx_priv_state { ...@@ -339,6 +339,8 @@ struct mv88e6xxx_priv_state {
u8 port_state[DSA_MAX_PORTS]; u8 port_state[DSA_MAX_PORTS];
struct work_struct bridge_work; struct work_struct bridge_work;
struct dentry *dbgfs;
}; };
struct mv88e6xxx_hw_stat { struct mv88e6xxx_hw_stat {
......
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