arch/mips/nxp/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 <int.h>
  26 #include <uart.h>
  27
  28
  29 static int pnx8550_timers_read(char* page, char** start, off_t offset, int count, int* eof, void* data)
  30 {
  31         int len = 0;
  32         int configPR = read_c0_config7();
  33
  34         if (offset==0) {
  35                 len += sprintf(&page[len], "Timer:       count,  compare, tc, status\n");
  36                 len += sprintf(&page[len], "    1: %11i, %8i,  %1i, %s\n",
  37                                read_c0_count(), read_c0_compare(),
  38                               (configPR>>6)&0x1, ((configPR>>3)&0x1)? "off":"on");
  39                 len += sprintf(&page[len], "    2: %11i, %8i,  %1i, %s\n",
  40                                read_c0_count2(), read_c0_compare2(),
  41                               (configPR>>7)&0x1, ((configPR>>4)&0x1)? "off":"on");
  42                 len += sprintf(&page[len], "    3: %11i, %8i,  %1i, %s\n",
  43                                read_c0_count3(), read_c0_compare3(),
  44                               (configPR>>8)&0x1, ((configPR>>5)&0x1)? "off":"on");
  45         }
  46
  47         return len;
  48 }
  49
  50 static int pnx8550_registers_read(char* page, char** start, off_t offset, int count, int* eof, void* data)
  51 {
  52         int len = 0;
  53
  54         if (offset==0) {
  55                 len += sprintf(&page[len], "config1:   %#10.8x\n", read_c0_config1());
  56                 len += sprintf(&page[len], "config2:   %#10.8x\n", read_c0_config2());
  57                 len += sprintf(&page[len], "config3:   %#10.8x\n", read_c0_config3());
  58                 len += sprintf(&page[len], "configPR:  %#10.8x\n", read_c0_config7());
  59                 len += sprintf(&page[len], "status:    %#10.8x\n", read_c0_status());
  60                 len += sprintf(&page[len], "cause:     %#10.8x\n", read_c0_cause());
  61                 len += sprintf(&page[len], "count:     %#10.8x\n", read_c0_count());
  62                 len += sprintf(&page[len], "count_2:   %#10.8x\n", read_c0_count2());
  63                 len += sprintf(&page[len], "count_3:   %#10.8x\n", read_c0_count3());
  64                 len += sprintf(&page[len], "compare:   %#10.8x\n", read_c0_compare());
  65                 len += sprintf(&page[len], "compare_2: %#10.8x\n", read_c0_compare2());
  66                 len += sprintf(&page[len], "compare_3: %#10.8x\n", read_c0_compare3());
  67         }
  68
  69         return len;
  70 }
  71
  72 static struct proc_dir_entry* pnx8550_dir;
  73 static struct proc_dir_entry* pnx8550_timers;
  74 static struct proc_dir_entry* pnx8550_registers;
  75
  76 static int pnx8550_proc_init( void )
  77 {
  78
  79         // Create /proc/pnx8550
  80         pnx8550_dir = proc_mkdir("pnx8550", NULL);
  81         if (!pnx8550_dir) {
  82                 printk(KERN_ERR "Can't create pnx8550 proc dir\n");
  83                 return -1;
  84         }
  85
  86         // Create /proc/pnx8550/timers
  87         pnx8550_timers = create_proc_read_entry(
  88                 "timers",
  89                 0,
  90                 pnx8550_dir,
  91                 pnx8550_timers_read,
  92                 NULL);
  93
  94         if (!pnx8550_timers)
  95                 printk(KERN_ERR "Can't create pnx8550 timers proc file\n");
  96
  97         // Create /proc/pnx8550/registers
  98         pnx8550_registers = create_proc_read_entry(
  99                 "registers",
 100                 0,
 101                 pnx8550_dir,
 102                 pnx8550_registers_read,
 103                 NULL);
 104
 105         if (!pnx8550_registers)
 106                 printk(KERN_ERR "Can't create pnx8550 registers proc file\n");
 107
 108         return 0;
 109 }
 110
 111 __initcall(pnx8550_proc_init);