openwrt/target/linux/package/diag/diag_led.c

   1 /*
   2  * diag_led.c - replacement diag module
   3  *
   4  * Copyright (C) 2004 Mike Baker,
   5  *                    Imre Kaloz <kaloz@dune.hu>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * $Id$
  22  */
  23
  24 /*
  25  * ChangeLog:
  26  * 2004/03/28 initial release
  27  * 2004/08/26 asus & buffalo support added
  28  * 2005/03/14 asus wl-500g deluxe and buffalo v2 support added
  29  * 2005/04/13 added licensing informations
  30  * 2005/04/18 base reset polarity off initial readings
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/kernel.h>
  36 #include <linux/sysctl.h>
  37 #include <asm/io.h>
  38 #include <typedefs.h>
  39 #include <osl.h>
  40 #include <bcmdevs.h>
  41 #include <sbutils.h>
  42
  43 extern char * nvram_get(const char *name);
  44 static void *sbh;
  45
  46 // v2.x - - - - -
  47 #define DIAG_GPIO (1<<1)
  48 #define DMZ_GPIO  (1<<7)
  49
  50 static void set_gpio(uint32 mask, uint32 value) {
  51         sb_gpiocontrol(sbh,mask, 0, GPIO_DRV_PRIORITY);
  52         sb_gpioouten(sbh,mask,mask,GPIO_DRV_PRIORITY);
  53         sb_gpioout(sbh,mask,value,GPIO_DRV_PRIORITY);
  54 }
  55
  56 static void v2_set_diag(u8 state) {
  57         set_gpio(DIAG_GPIO,state);
  58 }
  59 static void v2_set_dmz(u8 state) {
  60         set_gpio(DMZ_GPIO,state);
  61 }
  62
  63 // v1.x - - - - -
  64 #define LED_DIAG   0x13
  65 #define LED_DMZ    0x12
  66
  67 static void v1_set_diag(u8 state) {
  68         if (!state) {
  69                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG)=0xFF;
  70         } else {
  71                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG);
  72         }
  73 }
  74 static void v1_set_dmz(u8 state) {
  75         if (!state) {
  76                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ)=0xFF;
  77         } else {
  78                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ);
  79         }
  80 }
  81
  82 // - - - - -
  83 static void ignore(u8 ignored) {};
  84
  85 // - - - - -
  86 #define BIT_DMZ         0x01
  87 #define BIT_DIAG        0x04
  88
  89 void (*set_diag)(u8 state);
  90 void (*set_dmz)(u8 state);
  91
  92 static unsigned int diag = 0;
  93
  94 static void diag_change()
  95 {
  96         set_diag(0xFF); // off
  97         set_dmz(0xFF); // off
  98
  99         if(diag & BIT_DIAG)
 100                 set_diag(0x00); // on
 101         if(diag & BIT_DMZ)
 102                 set_dmz(0x00); // on
 103 }
 104
 105 static int proc_diag(ctl_table *table, int write, struct file *filp,
 106                 void *buffer, size_t *lenp)
 107 {
 108         int r;
 109         r = proc_dointvec(table, write, filp, buffer, lenp);
 110         if (write && !r) {
 111                 diag_change();
 112         }
 113         return r;
 114 }
 115
 116 // - - - - -
 117 static unsigned char reset_gpio = 0;
 118 static unsigned char reset_polarity = 0;
 119 static unsigned int reset = 0;
 120
 121 static int proc_reset(ctl_table *table, int write, struct file *filp,
 122                 void *buffer, size_t *lenp)
 123 {
 124
 125         if (reset_gpio) {
 126                 sb_gpiocontrol(sbh,reset_gpio,reset_gpio,GPIO_DRV_PRIORITY);
 127                 sb_gpioouten(sbh,reset_gpio,0,GPIO_DRV_PRIORITY);
 128                 reset=!(sb_gpioin(sbh)&reset_gpio);
 129
 130                 if (reset_polarity) reset=!reset;
 131         } else {
 132                 reset=0;
 133         }
 134
 135         return proc_dointvec(table, write, filp, buffer, lenp);
 136 }
 137
 138 // - - - - -
 139 static struct ctl_table_header *diag_sysctl_header;
 140
 141 static ctl_table sys_diag[] = {
 142          {
 143            ctl_name: 2000,
 144            procname: "diag",
 145            data: &diag,
 146            maxlen: sizeof(diag),
 147            mode: 0644,
 148            proc_handler: proc_diag
 149          },
 150          {
 151            ctl_name: 2001,
 152            procname: "reset",
 153            data: &reset,
 154            maxlen: sizeof(reset),
 155            mode: 0444,
 156            proc_handler: proc_reset
 157          },
 158          { 0 }
 159 };
 160
 161 static int __init diag_init()
 162 {
 163         char *buf;
 164         u32 board_type;
 165         sbh = sb_kattach();
 166         sb_gpiosetcore(sbh);
 167
 168         board_type = sb_boardtype(sbh);
 169         printk(KERN_INFO "diag boardtype: %08x\n",board_type);
 170
 171         set_diag=ignore;
 172         set_dmz=ignore;
 173
 174         buf=nvram_get("pmon_ver") ?: "";
 175         if (((board_type & 0xf00) == 0x400) && (strncmp(buf, "CFE", 3) != 0)) {
 176                 buf=nvram_get("boardtype")?:"";
 177                 if (!strcmp(buf,"bcm94710dev")) {
 178                         buf=nvram_get("boardnum")?:"";
 179                         if (!strcmp(buf,"42")) {
 180                                 // wrt54g v1.x
 181                                 set_diag=v1_set_diag;
 182                                 set_dmz=v1_set_dmz;
 183                                 reset_gpio=(1<<6);
 184                         }
 185                         if (!strcmp(buf,"asusX")) {
 186                                 //asus wl-500g
 187                                 reset_gpio=(1<<6);
 188                         }
 189                 }
 190                 if (!strcmp(buf,"bcm94710ap")) {
 191                         buf=nvram_get("boardnum")?:"";
 192                         if (!strcmp(buf,"42")) {
 193                                 // buffalo
 194                                 set_dmz=v2_set_dmz;
 195                                 reset_gpio=(1<<4);
 196                         }
 197                         if (!strcmp(buf,"44")) {
 198                                 //dell truemobile
 199                                 set_dmz=v2_set_dmz;
 200                                 reset_gpio=(1<<0);
 201                         }
 202                 }
 203         } else {
 204                 buf=nvram_get("boardnum")?:"";
 205                 if (!strcmp(buf,"42")) {
 206                         //linksys
 207                         set_diag=v2_set_diag;
 208                         set_dmz=v2_set_dmz;
 209                         reset_gpio=(1<<6);
 210                 }
 211                 if (!strcmp(buf,"44")) {
 212                         //motorola
 213                         reset_gpio=(1<<5);
 214                 }
 215                 if (!strcmp(buf,"00")) {
 216                         //buffalo
 217                         reset_gpio=(1<<7);
 218                 }
 219                 if (!strcmp(buf,"45")) {
 220                         //wl-500g deluxe
 221                         reset_gpio=(1<<6);
 222                 }
 223         }
 224
 225
 226         sb_gpiocontrol(sbh,reset_gpio,reset_gpio,GPIO_DRV_PRIORITY);
 227         sb_gpioouten(sbh,reset_gpio,0,GPIO_DRV_PRIORITY);
 228         reset_polarity=!(sb_gpioin(sbh)&reset_gpio);
 229
 230         diag_sysctl_header = register_sysctl_table(sys_diag, 0);
 231         diag_change();
 232
 233         return 0;
 234 }
 235
 236 static void __exit diag_exit()
 237 {
 238         unregister_sysctl_table(diag_sysctl_header);
 239 }
 240
 241 EXPORT_NO_SYMBOLS;
 242 MODULE_AUTHOR("openwrt.org");
 243 MODULE_LICENSE("GPL");
 244
 245 module_init(diag_init);
 246 module_exit(diag_exit);