+++ /dev/null
-/*
- * 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);
git.openpandora.org / pandora-kernel.git / blobdiff