e709d84b99
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
208 lines
5.2 KiB
C
208 lines
5.2 KiB
C
/*
|
|
* File: arch/blackfin/mach-common/cplbinfo.c
|
|
* Based on:
|
|
* Author: Sonic Zhang <sonic.zhang@analog.com>
|
|
*
|
|
* Created: Jan. 2005
|
|
* Description: Display CPLB status
|
|
*
|
|
* Modified:
|
|
* Copyright 2004-2006 Analog Devices Inc.
|
|
*
|
|
* Bugs: Enter bugs at http://blackfin.uclinux.org/
|
|
*
|
|
* 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; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* 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. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see the file COPYING, or write
|
|
* to the Free Software Foundation, Inc.,
|
|
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include <asm/current.h>
|
|
#include <asm/system.h>
|
|
#include <asm/cplb.h>
|
|
#include <asm/blackfin.h>
|
|
|
|
#define CPLB_I 1
|
|
#define CPLB_D 2
|
|
|
|
#define SYNC_SYS SSYNC()
|
|
#define SYNC_CORE CSYNC()
|
|
|
|
#define CPLB_BIT_PAGESIZE 0x30000
|
|
|
|
static int page_size_table[4] = {
|
|
0x00000400, /* 1K */
|
|
0x00001000, /* 4K */
|
|
0x00100000, /* 1M */
|
|
0x00400000 /* 4M */
|
|
};
|
|
|
|
static char page_size_string_table[][4] = { "1K", "4K", "1M", "4M" };
|
|
|
|
static int cplb_find_entry(unsigned long *cplb_addr,
|
|
unsigned long *cplb_data, unsigned long addr,
|
|
unsigned long data)
|
|
{
|
|
int ii;
|
|
|
|
for (ii = 0; ii < 16; ii++)
|
|
if (addr >= cplb_addr[ii] && addr < cplb_addr[ii] +
|
|
page_size_table[(cplb_data[ii] & CPLB_BIT_PAGESIZE) >> 16]
|
|
&& (cplb_data[ii] == data))
|
|
return ii;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static char *cplb_print_entry(char *buf, int type)
|
|
{
|
|
unsigned long *p_addr = dpdt_table;
|
|
unsigned long *p_data = dpdt_table + 1;
|
|
unsigned long *p_icount = dpdt_swapcount_table;
|
|
unsigned long *p_ocount = dpdt_swapcount_table + 1;
|
|
unsigned long *cplb_addr = (unsigned long *)DCPLB_ADDR0;
|
|
unsigned long *cplb_data = (unsigned long *)DCPLB_DATA0;
|
|
int entry = 0, used_cplb = 0;
|
|
|
|
if (type == CPLB_I) {
|
|
buf += sprintf(buf, "Instruction CPLB entry:\n");
|
|
p_addr = ipdt_table;
|
|
p_data = ipdt_table + 1;
|
|
p_icount = ipdt_swapcount_table;
|
|
p_ocount = ipdt_swapcount_table + 1;
|
|
cplb_addr = (unsigned long *)ICPLB_ADDR0;
|
|
cplb_data = (unsigned long *)ICPLB_DATA0;
|
|
} else
|
|
buf += sprintf(buf, "Data CPLB entry:\n");
|
|
|
|
buf += sprintf(buf, "Address\t\tData\tSize\tValid\tLocked\tSwapin\tiCount\toCount\n");
|
|
|
|
while (*p_addr != 0xffffffff) {
|
|
entry = cplb_find_entry(cplb_addr, cplb_data, *p_addr, *p_data);
|
|
if (entry >= 0)
|
|
used_cplb |= 1 << entry;
|
|
|
|
buf +=
|
|
sprintf(buf,
|
|
"0x%08lx\t0x%05lx\t%s\t%c\t%c\t%2d\t%ld\t%ld\n",
|
|
*p_addr, *p_data,
|
|
page_size_string_table[(*p_data & 0x30000) >> 16],
|
|
(*p_data & CPLB_VALID) ? 'Y' : 'N',
|
|
(*p_data & CPLB_LOCK) ? 'Y' : 'N', entry, *p_icount,
|
|
*p_ocount);
|
|
|
|
p_addr += 2;
|
|
p_data += 2;
|
|
p_icount += 2;
|
|
p_ocount += 2;
|
|
}
|
|
|
|
if (used_cplb != 0xffff) {
|
|
buf += sprintf(buf, "Unused/mismatched CPLBs:\n");
|
|
|
|
for (entry = 0; entry < 16; entry++)
|
|
if (0 == ((1 << entry) & used_cplb)) {
|
|
int flags = cplb_data[entry];
|
|
buf +=
|
|
sprintf(buf,
|
|
"%2d: 0x%08lx\t0x%05x\t%s\t%c\t%c\n",
|
|
entry, cplb_addr[entry], flags,
|
|
page_size_string_table[(flags &
|
|
0x30000) >>
|
|
16],
|
|
(flags & CPLB_VALID) ? 'Y' : 'N',
|
|
(flags & CPLB_LOCK) ? 'Y' : 'N');
|
|
}
|
|
}
|
|
|
|
buf += sprintf(buf, "\n");
|
|
|
|
return buf;
|
|
}
|
|
|
|
static int cplbinfo_proc_output(char *buf)
|
|
{
|
|
char *p;
|
|
|
|
p = buf;
|
|
|
|
p += sprintf(p, "------------------ CPLB Information ------------------\n\n");
|
|
|
|
if (bfin_read_IMEM_CONTROL() & ENICPLB)
|
|
p = cplb_print_entry(p, CPLB_I);
|
|
else
|
|
p += sprintf(p, "Instruction CPLB is disabled.\n\n");
|
|
|
|
if (bfin_read_DMEM_CONTROL() & ENDCPLB)
|
|
p = cplb_print_entry(p, CPLB_D);
|
|
else
|
|
p += sprintf(p, "Data CPLB is disabled.\n");
|
|
|
|
return p - buf;
|
|
}
|
|
|
|
static int cplbinfo_read_proc(char *page, char **start, off_t off,
|
|
int count, int *eof, void *data)
|
|
{
|
|
int len;
|
|
|
|
len = cplbinfo_proc_output(page);
|
|
if (len <= off + count)
|
|
*eof = 1;
|
|
*start = page + off;
|
|
len -= off;
|
|
if (len > count)
|
|
len = count;
|
|
if (len < 0)
|
|
len = 0;
|
|
return len;
|
|
}
|
|
|
|
static int cplbinfo_write_proc(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
printk(KERN_INFO "Reset the CPLB swap in/out counts.\n");
|
|
memset(ipdt_swapcount_table, 0, MAX_SWITCH_I_CPLBS * sizeof(unsigned long));
|
|
memset(dpdt_swapcount_table, 0, MAX_SWITCH_D_CPLBS * sizeof(unsigned long));
|
|
|
|
return count;
|
|
}
|
|
|
|
static int __init cplbinfo_init(void)
|
|
{
|
|
struct proc_dir_entry *entry;
|
|
|
|
entry = create_proc_entry("cplbinfo", 0, NULL);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
|
|
entry->read_proc = cplbinfo_read_proc;
|
|
entry->write_proc = cplbinfo_write_proc;
|
|
entry->data = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit cplbinfo_exit(void)
|
|
{
|
|
remove_proc_entry("cplbinfo", NULL);
|
|
}
|
|
|
|
module_init(cplbinfo_init);
|
|
module_exit(cplbinfo_exit);
|