diff options
Diffstat (limited to 'arch/blackfin/kernel/cplbinfo.c')
-rw-r--r-- | arch/blackfin/kernel/cplbinfo.c | 180 |
1 files changed, 0 insertions, 180 deletions
diff --git a/arch/blackfin/kernel/cplbinfo.c b/arch/blackfin/kernel/cplbinfo.c deleted file mode 100644 index 5b80d59e66e5..000000000000 --- a/arch/blackfin/kernel/cplbinfo.c +++ /dev/null @@ -1,180 +0,0 @@ -/* - * arch/blackfin/kernel/cplbinfo.c - display CPLB status - * - * Copyright 2004-2008 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#include <linux/ctype.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/uaccess.h> - -#include <asm/cplbinit.h> -#include <asm/blackfin.h> - -static char const page_strtbl[][4] = { - "1K", "4K", "1M", "4M", -#ifdef CONFIG_BF60x - "16K", "64K", "16M", "64M", -#endif -}; -#define page(flags) (((flags) & 0x70000) >> 16) -#define strpage(flags) page_strtbl[page(flags)] - -struct cplbinfo_data { - loff_t pos; - char cplb_type; - u32 mem_control; - struct cplb_entry *tbl; - int switched; -}; - -static void cplbinfo_print_header(struct seq_file *m) -{ - seq_printf(m, "Index\tAddress\t\tData\tSize\tU/RD\tU/WR\tS/WR\tSwitch\n"); -} - -static int cplbinfo_nomore(struct cplbinfo_data *cdata) -{ - return cdata->pos >= MAX_CPLBS; -} - -static int cplbinfo_show(struct seq_file *m, void *p) -{ - struct cplbinfo_data *cdata; - unsigned long data, addr; - loff_t pos; - - cdata = p; - pos = cdata->pos; - addr = cdata->tbl[pos].addr; - data = cdata->tbl[pos].data; - - seq_printf(m, - "%d\t0x%08lx\t%05lx\t%s\t%c\t%c\t%c\t%c\n", - (int)pos, addr, data, strpage(data), - (data & CPLB_USER_RD) ? 'Y' : 'N', - (data & CPLB_USER_WR) ? 'Y' : 'N', - (data & CPLB_SUPV_WR) ? 'Y' : 'N', - pos < cdata->switched ? 'N' : 'Y'); - - return 0; -} - -static void cplbinfo_seq_init(struct cplbinfo_data *cdata, unsigned int cpu) -{ - if (cdata->cplb_type == 'I') { - cdata->mem_control = bfin_read_IMEM_CONTROL(); - cdata->tbl = icplb_tbl[cpu]; - cdata->switched = first_switched_icplb; - } else { - cdata->mem_control = bfin_read_DMEM_CONTROL(); - cdata->tbl = dcplb_tbl[cpu]; - cdata->switched = first_switched_dcplb; - } -} - -static void *cplbinfo_start(struct seq_file *m, loff_t *pos) -{ - struct cplbinfo_data *cdata = m->private; - - if (!*pos) { - seq_printf(m, "%cCPLBs are %sabled: 0x%x\n", cdata->cplb_type, - (cdata->mem_control & ENDCPLB ? "en" : "dis"), - cdata->mem_control); - cplbinfo_print_header(m); - } else if (cplbinfo_nomore(cdata)) - return NULL; - - get_cpu(); - return cdata; -} - -static void *cplbinfo_next(struct seq_file *m, void *p, loff_t *pos) -{ - struct cplbinfo_data *cdata = p; - cdata->pos = ++(*pos); - if (cplbinfo_nomore(cdata)) - return NULL; - else - return cdata; -} - -static void cplbinfo_stop(struct seq_file *m, void *p) -{ - put_cpu(); -} - -static const struct seq_operations cplbinfo_sops = { - .start = cplbinfo_start, - .next = cplbinfo_next, - .stop = cplbinfo_stop, - .show = cplbinfo_show, -}; - -#define CPLBINFO_DCPLB_FLAG 0x80000000 - -static int cplbinfo_open(struct inode *inode, struct file *file) -{ - char cplb_type; - unsigned int cpu = (unsigned long)PDE_DATA(file_inode(file)); - int ret; - struct seq_file *m; - struct cplbinfo_data *cdata; - - cplb_type = cpu & CPLBINFO_DCPLB_FLAG ? 'D' : 'I'; - cpu &= ~CPLBINFO_DCPLB_FLAG; - - if (!cpu_online(cpu)) - return -ENODEV; - - ret = seq_open_private(file, &cplbinfo_sops, sizeof(*cdata)); - if (ret) - return ret; - m = file->private_data; - cdata = m->private; - - cdata->pos = 0; - cdata->cplb_type = cplb_type; - cplbinfo_seq_init(cdata, cpu); - - return 0; -} - -static const struct file_operations cplbinfo_fops = { - .open = cplbinfo_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_private, -}; - -static int __init cplbinfo_init(void) -{ - struct proc_dir_entry *cplb_dir, *cpu_dir; - char buf[10]; - unsigned int cpu; - - cplb_dir = proc_mkdir("cplbinfo", NULL); - if (!cplb_dir) - return -ENOMEM; - - for_each_possible_cpu(cpu) { - sprintf(buf, "cpu%i", cpu); - cpu_dir = proc_mkdir(buf, cplb_dir); - if (!cpu_dir) - return -ENOMEM; - - proc_create_data("icplb", S_IRUGO, cpu_dir, &cplbinfo_fops, - (void *)cpu); - proc_create_data("dcplb", S_IRUGO, cpu_dir, &cplbinfo_fops, - (void *)(cpu | CPLBINFO_DCPLB_FLAG)); - } - - return 0; -} -late_initcall(cplbinfo_init); |