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// replacement diag module
// (c) 2004 openwrt
// mbm at alt dot org
//
// initial release 2004/03/28
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/sysctl.h>
#include <asm/io.h>
#include <typedefs.h>
#include <bcm4710.h>
#include <sbutils.h>
static void *sbh;
// v2.x - - - - -
#define DIAG_GPIO (1<<1)
#define DMZ_GPIO (1<<7)
static void set_gpio(uint32 mask, uint32 value) {
sb_gpiocontrol(sbh,mask,0);
sb_gpioouten(sbh,mask,mask);
sb_gpioout(sbh,mask,value);
}
static void v2_set_diag(u8 state) {
set_gpio(DIAG_GPIO,state);
}
static void v2_set_dmz(u8 state) {
set_gpio(DMZ_GPIO,state);
}
// v1.x - - - - -
#define LED_DIAG 0x13
#define LED_DMZ 0x12
static void v1_set_diag(u8 state) {
if (!state) {
*(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG)=0xFF;
} else {
*(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG);
}
}
static void v1_set_dmz(u8 state) {
if (!state) {
*(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ)=0xFF;
} else {
*(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ);
}
}
// - - - - -
static void ignore(u8 ignored) {};
// - - - - -
#define BIT_DMZ 0x01
#define BIT_DIAG 0x04
void (*set_diag)(u8 state);
void (*set_dmz)(u8 state);
static unsigned int diag = 0;
static struct timer_list timer;
static void diag_change()
{
printk(KERN_INFO "led -> %02x\n",diag);
set_diag(0xFF); // off
set_dmz(0xFF); // off
if(diag & BIT_DIAG)
set_diag(0x00); // on
if(diag & BIT_DMZ)
set_dmz(0x00); // on
}
static int proc_diag(ctl_table *table, int write, struct file *filp,
void *buffer, size_t *lenp)
{
int r;
r = proc_dointvec(table, write, filp, buffer, lenp);
if (write && !r) {
diag_change();
}
return r;
}
// - - - - -
static struct ctl_table_header *diag_sysctl_header;
static ctl_table sys_diag[] = {
{
ctl_name: 2000,
procname: "diag",
data: &diag,
maxlen: sizeof(diag),
mode: 0644,
proc_handler: proc_diag
},
{ 0 }
};
static int __init diag_init()
{
u32 board_type;
sbh = sb_kattach();
sb_gpiosetcore(sbh);
board_type = sb_boardtype(sbh);
printk(KERN_INFO "diag board_type: %08x\n",board_type);
if (board_type & 0x400) {
board_type=1;
set_diag=v1_set_diag;
set_dmz=v1_set_dmz;
if (board_type==0x41d) {
printk(KERN_INFO "buffalo hack.\n");
set_diag=ignore;
set_dmz=v2_set_dmz;
}
} else {
board_type=2;
set_diag=v2_set_diag;
set_dmz=v2_set_dmz;
}
printk(KERN_INFO "using v%d hardware\n",board_type);
diag_sysctl_header = register_sysctl_table(sys_diag, 0);
diag_change();
return 0;
}
static void __exit diag_exit()
{
unregister_sysctl_table(diag_sysctl_header);
del_timer(&timer);
}
module_init(diag_init);
module_exit(diag_exit);
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