arch/mips/philips/pnx8550/common/proc.c

   1 /*
   2  *  This program is free software; you can distribute it and/or modify it
   3  *  under the terms of the GNU General Public License (Version 2) as
   4  *  published by the Free Software Foundation.
   5  *
   6  *  This program is distributed in the hope it will be useful, but WITHOUT
   7  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   8  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   9  *  for more details.
  10  *
  11  *  You should have received a copy of the GNU General Public License along
  12  *  with this program; if not, write to the Free Software Foundation, Inc.,
  13  *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  14  */
  15 #include <linux/init.h>
  16 #include <linux/proc_fs.h>
  17 #include <linux/irq.h>
  18 #include <linux/sched.h>
  19 #include <linux/slab.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/kernel_stat.h>
  22 #include <linux/random.h>
  23
  24 #include <asm/io.h>
  25 #include <asm/gdb-stub.h>
  26 #include <int.h>
  27 #include <uart.h>
  28
  29
  30 static int pnx8550_timers_read (char* page, char** start, off_t offset, int count, int* eof, void* data)
  31 {
  32         int len = 0;
  33         int configPR = read_c0_config7();
  34
  35         if (offset==0) {
  36                 len += sprintf(&page[len],"Timer:       count,  compare, tc, status\n");
  37                 len += sprintf(&page[len],"    1: %11i, %8i,  %1i, %s\n",
  38                                read_c0_count(), read_c0_compare(),
  39                               (configPR>>6)&0x1, ((configPR>>3)&0x1)? "off":"on");
  40                 len += sprintf(&page[len],"    2: %11i, %8i,  %1i, %s\n",
  41                                read_c0_count2(), read_c0_compare2(),
  42                               (configPR>>7)&0x1, ((configPR>>4)&0x1)? "off":"on");
  43                 len += sprintf(&page[len],"    3: %11i, %8i,  %1i, %s\n",
  44                                read_c0_count3(), read_c0_compare3(),
  45                               (configPR>>8)&0x1, ((configPR>>5)&0x1)? "off":"on");
  46         }
  47
  48         return len;
  49 }
  50
  51 static int pnx8550_registers_read (char* page, char** start, off_t offset, int count, int* eof, void* data)
  52 {
  53         int len = 0;
  54
  55         if (offset==0) {
  56                 len += sprintf(&page[len],"config1:   %#10.8x\n",read_c0_config1());
  57                 len += sprintf(&page[len],"config2:   %#10.8x\n",read_c0_config2());
  58                 len += sprintf(&page[len],"config3:   %#10.8x\n",read_c0_config3());
  59                 len += sprintf(&page[len],"configPR:  %#10.8x\n",read_c0_config7());
  60                 len += sprintf(&page[len],"status:    %#10.8x\n",read_c0_status());
  61                 len += sprintf(&page[len],"cause:     %#10.8x\n",read_c0_cause());
  62                 len += sprintf(&page[len],"count:     %#10.8x\n",read_c0_count());
  63                 len += sprintf(&page[len],"count_2:   %#10.8x\n",read_c0_count2());
  64                 len += sprintf(&page[len],"count_3:   %#10.8x\n",read_c0_count3());
  65                 len += sprintf(&page[len],"compare:   %#10.8x\n",read_c0_compare());
  66                 len += sprintf(&page[len],"compare_2: %#10.8x\n",read_c0_compare2());
  67                 len += sprintf(&page[len],"compare_3: %#10.8x\n",read_c0_compare3());
  68         }
  69
  70         return len;
  71 }
  72
  73 static struct proc_dir_entry* pnx8550_dir        = NULL;
  74 static struct proc_dir_entry* pnx8550_timers     = NULL;
  75 static struct proc_dir_entry* pnx8550_registers  = NULL;
  76
  77 static int pnx8550_proc_init( void )
  78 {
  79
  80         // Create /proc/pnx8550
  81         pnx8550_dir = create_proc_entry("pnx8550", S_IFDIR|S_IRUGO, NULL);
  82         if (pnx8550_dir){
  83                 pnx8550_dir->nlink = 1;
  84         }
  85         else {
  86                 printk(KERN_ERR "Can't create pnx8550 proc dir\n");
  87                 return -1;
  88         }
  89
  90         // Create /proc/pnx8550/timers
  91         pnx8550_timers = create_proc_entry("timers", S_IFREG|S_IRUGO, pnx8550_dir );
  92         if (pnx8550_timers){
  93                 pnx8550_timers->nlink = 1;
  94                 pnx8550_timers->read_proc = pnx8550_timers_read;
  95         }
  96         else {
  97                 printk(KERN_ERR "Can't create pnx8550 timers proc file\n");
  98         }
  99
 100         // Create /proc/pnx8550/registers
 101         pnx8550_registers = create_proc_entry("registers", S_IFREG|S_IRUGO, pnx8550_dir );
 102         if (pnx8550_registers){
 103                 pnx8550_registers->nlink = 1;
 104                 pnx8550_registers->read_proc = pnx8550_registers_read;
 105         }
 106         else {
 107                 printk(KERN_ERR "Can't create pnx8550 registers proc file\n");
 108         }
 109
 110         return 0;
 111 }
 112
 113 __initcall(pnx8550_proc_init);