text: /*
   * Copyright 2010 Tilera Corporation. All Rights Reserved.
   *
   *   This program is free software; you can redistribute it and/or
   *   modify it under the terms of the GNU General Public License
   *   as published by the Free Software Foundation, version 2.
   *
   *   This program is distributed in the hope that it will be useful, but
   *   WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
   *   NON INFRINGEMENT.  See the GNU General Public License for
   *   more details.
   */
  
  #include <linux/smp.h>
  #include <linux/seq_file.h>
  #include <linux/threads.h>
  #include <linux/cpumask.h>
  #include <linux/timex.h>
  #include <linux/delay.h>
  #include <linux/fs.h>
  #include <linux/proc_fs.h>
  #include <linux/sysctl.h>
  #include <linux/hardirq.h>
  #include <linux/mman.h>
  #include <asm/unaligned.h>
  #include <asm/pgtable.h>
  #include <asm/processor.h>
  #include <asm/sections.h>
  #include <asm/homecache.h>
  #include <asm/hardwall.h>
  #include <arch/chip.h>
  
  
  /*
   * Support /proc/cpuinfo
   */
  
  #define cpu_to_ptr(n) ((void *)((long)(n)+1))
  #define ptr_to_cpu(p) ((long)(p) - 1)
  
  static int show_cpuinfo(struct seq_file *m, void *v)
  {
  	int n = ptr_to_cpu(v);
  
  	if (n == 0) {
  		char buf[NR_CPUS*5];
  		cpulist_scnprintf(buf, sizeof(buf), cpu_online_mask);
  		seq_printf(m, "cpu count\t: %d\n", num_online_cpus());
  		seq_printf(m, "cpu list\t: %s\n", buf);
  		seq_printf(m, "model name\t: %s\n", chip_model);
  		seq_printf(m, "flags\t\t:\n");  /* nothing for now */
  		seq_printf(m, "cpu MHz\t\t: %llu.%06llu\n",
  			   get_clock_rate() / 1000000,
  			   (get_clock_rate() % 1000000));
  		seq_printf(m, "bogomips\t: %lu.%02lu\n\n",
  			   loops_per_jiffy/(500000/HZ),
  			   (loops_per_jiffy/(5000/HZ)) % 100);
  	}
  
  #ifdef CONFIG_SMP
  	if (!cpu_online(n))
  		return 0;
  #endif
  
  	seq_printf(m, "processor\t: %d\n", n);
  
  	/* Print only num_online_cpus() blank lines total. */
  	if (cpumask_next(n, cpu_online_mask) < nr_cpu_ids)
  		seq_printf(m, "\n");
  
  	return 0;
  }
  
  static void *c_start(struct seq_file *m, loff_t *pos)
  {
  	return *pos < nr_cpu_ids ? cpu_to_ptr(*pos) : NULL;
  }
  static void *c_next(struct seq_file *m, void *v, loff_t *pos)
  {
  	++*pos;
  	return c_start(m, pos);
  }
  static void c_stop(struct seq_file *m, void *v)
  {
  }
  const struct seq_operations cpuinfo_op = {
  	.start	= c_start,
  	.next	= c_next,
  	.stop	= c_stop,
  	.show	= show_cpuinfo,
  };
  
  /*
   * Support /proc/tile directory
   */
  
  static int __init proc_tile_init(void)
  {
  	struct proc_dir_entry *root = proc_mkdir("tile", NULL);
  	if (root == NULL)
  		return 0;
  
  	proc_tile_hardwall_init(root);
  
  	return 0;
  }
  
  arch_initcall(proc_tile_init);
  
  /*
   * Support /proc/sys/tile directory
   */
  
  #ifndef __tilegx__  /* FIXME: GX: no support for unaligned access yet */
  static ctl_table unaligned_subtable[] = {
  	{
  		.procname	= "enabled",
  		.data		= &unaligned_fixup,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,
  		.proc_handler	= &proc_dointvec
  	},
  	{
  		.procname	= "printk",
  		.data		= &unaligned_printk,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,
  		.proc_handler	= &proc_dointvec
  	},
  	{
  		.procname	= "count",
  		.data		= &unaligned_fixup_count,
  		.maxlen		= sizeof(int),
  		.mode		= 0644,
  		.proc_handler	= &proc_dointvec
  	},
  	{}
  };
  
  static ctl_table unaligned_table[] = {
  	{
  		.procname	= "unaligned_fixup",
  		.mode		= 0555,
  		.child		= unaligned_subtable
  	},
  	{}
  };
  
  static struct ctl_path tile_path[] = {
  	{ .procname = "tile" },
  	{ }
  };
  
  static int __init proc_sys_tile_init(void)
  {
  	register_sysctl_paths(tile_path, unaligned_table);
  	return 0;
  }
  
  arch_initcall(proc_sys_tile_init);
  #endif
  