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