forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
driver/net/ethernet/faraday: Add ftmac100_debug control.
~# echo [0/1] > /proc/ftmac100_debug/debug
0: Disable ftmac100.c debug message
1: Enable ftmac100.c debug message
~# echo [0/1/2/4] > /proc/ftmac100_debug/incr
0: DISABLED
1: INCR4
2: INCR8
3: INCR16
* Note: Need to restart eth[x] to apply the change.
~# ifconfig eth0 down
~# udhcpc
Signed-off-by: Dylan Jhong <dylan@andestech.com>
Co-authored-by: Eric Lin <tesheng@andestech.com>- Loading branch information
2 people
authored and
Nylon Chen
committed
Jun 19, 2020
1 parent
bb889b5
commit 86aca05
Showing
3 changed files
with
207 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,189 @@ | ||
| /* | ||
| * Copyright (C) 2009 Andes Technology Corporation | ||
| * Copyright (C) 2019 Andes Technology Corporation | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License version 2 as | ||
| * published by the Free Software Foundation. | ||
| */ | ||
|
|
||
| #include <linux/module.h> | ||
| #include <linux/blkdev.h> | ||
| #include <linux/proc_fs.h> | ||
| #include <asm/andesv5/csr.h> | ||
|
|
||
| #define INPUTLEN 32 | ||
|
|
||
| /*************************************************************************************/ | ||
|
|
||
| // 0: DISABLE | ||
| // 1: ENABLE | ||
| unsigned int FTMAC100_DEBUG = 0; | ||
|
|
||
| // 0: DISABLE | ||
| // 1: INCR4 | ||
| // 2: INCR8 | ||
| // 4: INCR16 | ||
| unsigned int FTMAC100_INCR = 4; | ||
|
|
||
| /*************************************************************************************/ | ||
|
|
||
| struct entry_struct{ | ||
| char *name; | ||
| int perm; | ||
| struct file_operations *fops; | ||
| }; | ||
|
|
||
| static struct proc_dir_entry *proc_ftmac100_debug; | ||
|
|
||
| #define DEBUG( enable, tagged, ...) \ | ||
| do{ \ | ||
| if(enable){ \ | ||
| if(tagged) \ | ||
| printk( "[ %30s() ] ", __func__); \ | ||
| printk( __VA_ARGS__); \ | ||
| } \ | ||
| } while( 0) | ||
|
|
||
| static int debug = 0; | ||
| module_param(debug, int, 0); | ||
|
|
||
| static ssize_t ftmac100_proc_read(struct file *file, char __user *userbuf, | ||
| size_t count, loff_t *ppos) | ||
| { | ||
| int ret=0; | ||
| char buf[128]={0}; | ||
| if (!strncmp(file->f_path.dentry->d_name.name, "debug", 5)){ | ||
| ret = sprintf(buf, "FTMAC100 debug info: %s\n", (FTMAC100_DEBUG) ? "Enabled" : "Disabled"); | ||
| }else if (!strncmp(file->f_path.dentry->d_name.name, "incr", 4)){ | ||
| switch(FTMAC100_INCR){ | ||
| case 0: | ||
| ret = sprintf(buf, "FTMAC100 INCR: %s\n", "Disabled"); | ||
| break; | ||
| case 1: | ||
| ret = sprintf(buf, "FTMAC100 INCR: %d (INCR4)\n",FTMAC100_INCR); | ||
| break; | ||
| case 2: | ||
| ret = sprintf(buf, "FTMAC100 INCR: %d (INCR8)\n",FTMAC100_INCR); | ||
| break; | ||
| case 4: | ||
| ret = sprintf(buf, "FTMAC100 INCR: %d (INCR16)\n",FTMAC100_INCR); | ||
| break; | ||
| } | ||
| }else | ||
| return -EFAULT; | ||
|
|
||
| return simple_read_from_buffer(userbuf, count, ppos, buf, ret); | ||
| } | ||
|
|
||
| static ssize_t ftmac100_proc_write(struct file *file, | ||
| const char __user *buffer, size_t count, loff_t *ppos) | ||
| { | ||
|
|
||
| unsigned long en; | ||
| char inbuf[INPUTLEN]; | ||
|
|
||
| if (count > INPUTLEN - 1) | ||
| count = INPUTLEN - 1; | ||
|
|
||
| if (copy_from_user(inbuf, buffer, count)) | ||
| return -EFAULT; | ||
|
|
||
| inbuf[count] = '\0'; | ||
|
|
||
| if (!sscanf(inbuf, "%lu", &en)) | ||
| return -EFAULT; | ||
|
|
||
| if(!strncmp(file->f_path.dentry->d_name.name, "debug", 5)) { | ||
| FTMAC100_DEBUG = en; | ||
| } else if(!strncmp(file->f_path.dentry->d_name.name, "incr", 4)) { | ||
| switch(en){ | ||
| case 0: | ||
| case 1: | ||
| case 2: | ||
| case 4: | ||
| FTMAC100_INCR = en; | ||
| printk("Please restart eth0 interface to apply INCR\n"); | ||
| printk(" ~# ifconfig eth0 down\n"); | ||
| printk(" ~# udhcpc\n"); | ||
| break; | ||
| default: | ||
| printk("INCR value must be [0/1/2/4]\n"); | ||
| printk(" 0: INCR disabled\n"); | ||
| printk(" 1: INCR4\n"); | ||
| printk(" 2: INCR8\n"); | ||
| printk(" 4: INCR16\n"); | ||
| } | ||
| } else { | ||
| return -EFAULT; | ||
| } | ||
|
|
||
| return count; | ||
| } | ||
|
|
||
| static struct file_operations en_fops = { | ||
| .open = simple_open, | ||
| .read = ftmac100_proc_read, | ||
| .write = ftmac100_proc_write, | ||
| }; | ||
|
|
||
| static void create_seq_entry(struct entry_struct *e, mode_t mode, | ||
| struct proc_dir_entry *parent) | ||
| { | ||
|
|
||
| struct proc_dir_entry *entry = proc_create(e->name, mode, parent, e->fops); | ||
|
|
||
| if (!entry) | ||
| printk(KERN_ERR "invalid %s register.\n", e->name); | ||
| } | ||
|
|
||
| static void install_proc_table(struct entry_struct *table) | ||
| { | ||
| while (table->name) { | ||
|
|
||
| create_seq_entry(table, table->perm, proc_ftmac100_debug); | ||
| table++; | ||
| } | ||
| } | ||
|
|
||
| static void remove_proc_table(struct entry_struct *table) | ||
| { | ||
|
|
||
| while (table->name) { | ||
| remove_proc_entry(table->name, proc_ftmac100_debug); | ||
| table++; | ||
| } | ||
| } | ||
|
|
||
| struct entry_struct proc_table_ftmac100_debug[] = { | ||
|
|
||
| {"debug", 0644, &en_fops}, | ||
| {"incr", 0644, &en_fops}, | ||
| }; | ||
| static int __init init_ftmac100_debug(void) | ||
| { | ||
|
|
||
| DEBUG(debug, 1, "ftmac100_debug module registered\n"); | ||
|
|
||
| if(!(proc_ftmac100_debug = proc_mkdir("ftmac100_debug", NULL))) | ||
| return -ENOMEM; | ||
|
|
||
| install_proc_table(proc_table_ftmac100_debug); | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| static void __exit cleanup_ftmac100_debug(void) | ||
| { | ||
|
|
||
| remove_proc_table(proc_table_ftmac100_debug); | ||
| remove_proc_entry("ftmac100_debug", NULL); | ||
|
|
||
| DEBUG(debug, 1, "ftmac100_debug module unregistered\n"); | ||
| } | ||
|
|
||
| module_init(init_ftmac100_debug); | ||
| module_exit(cleanup_ftmac100_debug); | ||
|
|
||
| MODULE_LICENSE("GPL"); | ||
| MODULE_DESCRIPTION("ftmac100_debug Module"); |