package/diag/src/diag.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  * 2006/02/07 motorola wa840g/we800g support added
  32  */
  33
  34 #include <linux/module.h>
  35 #include <linux/init.h>
  36 #include <linux/kernel.h>
  37 #include <linux/sysctl.h>
  38 #include <asm/io.h>
  39 #include <typedefs.h>
  40 #include <osl.h>
  41 #include <bcmdevs.h>
  42 #include <sbutils.h>
  43
  44 extern char * nvram_get(const char *name);
  45 static void *sbh;
  46
  47 // v2.x - - - - -
  48 #define DIAG_GPIO (1<<1)
  49 #define DMZ_GPIO  (1<<7)
  50
  51 static void set_gpio(uint32 mask, uint32 value) {
  52         sb_gpiocontrol(sbh,mask, 0, GPIO_DRV_PRIORITY);
  53         sb_gpioouten(sbh,mask,mask,GPIO_DRV_PRIORITY);
  54         sb_gpioout(sbh,mask,value,GPIO_DRV_PRIORITY);
  55 }
  56
  57 static void v2_set_diag(u8 state) {
  58         set_gpio(DIAG_GPIO,state);
  59 }
  60 static void v2_set_dmz(u8 state) {
  61         set_gpio(DMZ_GPIO,state);
  62 }
  63
  64 // v1.x - - - - -
  65 #define LED_DIAG   0x13
  66 #define LED_DMZ    0x12
  67
  68 static void v1_set_diag(u8 state) {
  69         if (!state) {
  70                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG)=0xFF;
  71         } else {
  72                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DIAG);
  73         }
  74 }
  75 static void v1_set_dmz(u8 state) {
  76         if (!state) {
  77                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ)=0xFF;
  78         } else {
  79                 *(volatile u8*)(KSEG1ADDR(BCM4710_EUART)+LED_DMZ);
  80         }
  81 }
  82
  83 static void wap1_set_diag(u8 state) {
  84        set_gpio(1<<3,state);
  85 }
  86 static void wap1_set_dmz(u8 state) {
  87        set_gpio(1<<4,state);
  88 }
  89
  90 // - - - - -
  91 static void ignore(u8 ignored) {};
  92
  93 // - - - - -
  94 #define BIT_DMZ         0x01
  95 #define BIT_DIAG        0x04
  96
  97 void (*set_diag)(u8 state);
  98 void (*set_dmz)(u8 state);
  99
 100 static unsigned int diag = 0;
 101
 102 static void diag_change(void)
 103 {
 104         set_diag(0xFF); // off
 105         set_dmz(0xFF); // off
 106
 107         if(diag & BIT_DIAG)
 108                 set_diag(0x00); // on
 109         if(diag & BIT_DMZ)
 110                 set_dmz(0x00); // on
 111 }
 112
 113 static int proc_diag(ctl_table *table, int write, struct file *filp,
 114                 void *buffer, size_t *lenp)
 115 {
 116         int r;
 117         r = proc_dointvec(table, write, filp, buffer, lenp);
 118         if (write && !r) {
 119                 diag_change();
 120         }
 121         return r;
 122 }
 123
 124 // - - - - -
 125 static unsigned char reset_gpio = 0;
 126 static unsigned char reset_polarity = 0;
 127 static unsigned int reset = 0;
 128
 129 static int proc_reset(ctl_table *table, int write, struct file *filp,
 130                 void *buffer, size_t *lenp)
 131 {
 132
 133         if (reset_gpio) {
 134                 sb_gpiocontrol(sbh,reset_gpio,reset_gpio,GPIO_DRV_PRIORITY);
 135                 sb_gpioouten(sbh,reset_gpio,0,GPIO_DRV_PRIORITY);
 136                 reset=!(sb_gpioin(sbh)&reset_gpio);
 137
 138                 if (reset_polarity) reset=!reset;
 139         } else {
 140                 reset=0;
 141         }
 142
 143         return proc_dointvec(table, write, filp, buffer, lenp);
 144 }
 145
 146 // - - - - -
 147 static struct ctl_table_header *diag_sysctl_header;
 148
 149 static ctl_table sys_diag[] = {
 150          {
 151            ctl_name: 2000,
 152            procname: "diag",
 153            data: &diag,
 154            maxlen: sizeof(diag),
 155            mode: 0644,
 156            proc_handler: proc_diag
 157          },
 158          {
 159            ctl_name: 2001,
 160            procname: "reset",
 161            data: &reset,
 162            maxlen: sizeof(reset),
 163            mode: 0444,
 164            proc_handler: proc_reset
 165          },
 166          { 0 }
 167 };
 168
 169 static int __init diag_init(void)
 170 {
 171         char *buf;
 172         u32 board_type;
 173         sbh = (void *)sb_kattach();
 174         sb_gpiosetcore(sbh);
 175
 176         board_type = sb_boardtype(sbh);
 177         printk(KERN_INFO "diag boardtype: %08x\n",board_type);
 178
 179         set_diag=ignore;
 180         set_dmz=ignore;
 181
 182         buf=nvram_get("pmon_ver") ?: "";
 183         if (((board_type & 0xf00) == 0x400) && (strncmp(buf, "CFE", 3) != 0)) {
 184                 buf=nvram_get("boardtype")?:"";
 185                 if (!strncmp(buf,"bcm94710dev",11)) {
 186                         buf=nvram_get("boardnum")?:"";
 187                         if (!strcmp(buf,"42")) {
 188                                 // wrt54g v1.x
 189                                 set_diag=v1_set_diag;
 190                                 set_dmz=v1_set_dmz;
 191                                 reset_gpio=(1<<6);
 192                         }
 193                         if (simple_strtoul(buf, NULL, 0) == 2) {
 194                                 // wap54g v1.0
 195                                 // do not use strcmp as PMON v5.3.22 has some built-in nvram
 196                                 // defaults with trailing \r
 197                                 set_diag=wap1_set_diag;
 198                                 // no dmz led on wap54g, used green led
 199                                 // labeled "WLAN Link" instead
 200                                 set_dmz=wap1_set_dmz;
 201                                 reset_gpio=(1<<0);
 202                         }
 203                         if (!strcmp(buf,"asusX")) {
 204                                 //asus wl-500g
 205                                 reset_gpio=(1<<6);
 206                         }
 207                         if (!strcmp(buf,"2")) {
 208                                 //wa840g v1 / we800g v1
 209                                 reset_gpio=(1<<0);
 210                         }
 211                 }
 212                 if (!strcmp(buf,"bcm94710ap")) {
 213                         buf=nvram_get("boardnum")?:"";
 214                         if (!strcmp(buf,"42")) {
 215                                 // buffalo
 216                                 set_dmz=v2_set_dmz;
 217                                 reset_gpio=(1<<4);
 218                         }
 219                         if (!strcmp(buf,"44")) {
 220                                 //dell truemobile
 221                                 set_dmz=v2_set_dmz;
 222                                 reset_gpio=(1<<0);
 223                         }
 224                 }
 225         } else {
 226                 buf=nvram_get("boardnum")?:"";
 227                 if (!strcmp(buf,"42")) {
 228                         //linksys
 229                         set_diag=v2_set_diag;
 230                         set_dmz=v2_set_dmz;
 231                         reset_gpio=(1<<6);
 232                 }
 233                 if (!strcmp(buf,"44")) {
 234                         //motorola
 235                         reset_gpio=(1<<5);
 236                 }
 237                 if (!strcmp(buf,"00")) {
 238                         //buffalo
 239                         reset_gpio=(1<<7);
 240                 }
 241                 if (!strcmp(buf,"45")) {
 242                         //wl-500g deluxe
 243                         reset_gpio=(1<<6);
 244                 }
 245         }
 246
 247
 248         sb_gpiocontrol(sbh,reset_gpio,reset_gpio,GPIO_DRV_PRIORITY);
 249         sb_gpioouten(sbh,reset_gpio,0,GPIO_DRV_PRIORITY);
 250         reset_polarity=!(sb_gpioin(sbh)&reset_gpio);
 251
 252         diag_sysctl_header = register_sysctl_table(sys_diag, 0);
 253         diag_change();
 254
 255         return 0;
 256 }
 257
 258 static void __exit diag_exit(void)
 259 {
 260         unregister_sysctl_table(diag_sysctl_header);
 261 }
 262
 263 EXPORT_NO_SYMBOLS;
 264 MODULE_AUTHOR("openwrt.org");
 265 MODULE_LICENSE("GPL");
 266
 267 module_init(diag_init);
 268 module_exit(diag_exit);