[PATCH] nvram - convert PRINT_PROC to seq_file

Convert the /proc/drivers/nvram file from the old PRINT_PROC macro
to the new seq_file filesystem.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wim Van Sebroeck 2008-11-11 09:56:00 +00:00
parent 971ddcf8ad
commit 8587b33f4a
1 changed files with 83 additions and 79 deletions

View File

@ -32,9 +32,10 @@
* added changelog
* 1.2 Erik Gilling: Cobalt Networks support
* Tim Hockin: general cleanup, Cobalt support
* 1.3 Wim Van Sebroeck: convert PRINT_PROC to seq_file
*/
#define NVRAM_VERSION "1.2"
#define NVRAM_VERSION "1.3"
#include <linux/module.h>
#include <linux/smp_lock.h>
@ -106,6 +107,7 @@
#include <linux/mc146818rtc.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/uaccess.h>
@ -122,8 +124,8 @@ static int mach_check_checksum(void);
static void mach_set_checksum(void);
#ifdef CONFIG_PROC_FS
static int mach_proc_infos(unsigned char *contents, char *buffer, int *len,
off_t *begin, off_t offset, int size);
static void mach_proc_infos(unsigned char *contents, struct seq_file *seq,
void *offset);
#endif
/*
@ -370,46 +372,47 @@ static int nvram_release(struct inode *inode, struct file *file)
}
#ifndef CONFIG_PROC_FS
static int nvram_read_proc(char *buffer, char **start, off_t offset,
int size, int *eof, void *data)
static int nvram_add_proc_fs(void)
{
return 0;
}
#else
static int nvram_read_proc(char *buffer, char **start, off_t offset,
int size, int *eof, void *data)
static int nvram_proc_read(struct seq_file *seq, void *offset)
{
unsigned char contents[NVRAM_BYTES];
int i, len = 0;
off_t begin = 0;
int i = 0;
spin_lock_irq(&rtc_lock);
for (i = 0; i < NVRAM_BYTES; ++i)
contents[i] = __nvram_read_byte(i);
spin_unlock_irq(&rtc_lock);
*eof = mach_proc_infos(contents, buffer, &len, &begin, offset, size);
if (offset >= begin + len)
return 0;
*start = buffer + (offset - begin);
return (size < begin + len - offset) ? size : begin + len - offset;
mach_proc_infos(contents, seq, offset);
return 0;
}
/* This macro frees the machine specific function from bounds checking and
* this like that... */
#define PRINT_PROC(fmt,args...) \
do { \
*len += sprintf(buffer + *len, fmt, ##args); \
if (*begin + *len > offset + size) \
return 0; \
if (*begin + *len < offset) { \
*begin += *len; \
*len = 0; \
} \
} while (0)
static int nvram_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, nvram_proc_read, NULL);
}
static const struct file_operations nvram_proc_fops = {
.owner = THIS_MODULE,
.open = nvram_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int nvram_add_proc_fs(void)
{
if (!proc_create("driver/nvram", 0, NULL, &nvram_proc_fops))
return -ENOMEM;
return 0;
}
#endif /* CONFIG_PROC_FS */
@ -443,10 +446,9 @@ static int __init nvram_init(void)
NVRAM_MINOR);
goto out;
}
if (!create_proc_read_entry("driver/nvram", 0, NULL, nvram_read_proc,
NULL)) {
ret = nvram_add_proc_fs();
if (ret) {
printk(KERN_ERR "nvram: can't create /proc/driver/nvram\n");
ret = -ENOMEM;
goto outmisc;
}
ret = 0;
@ -511,8 +513,8 @@ static char *gfx_types[] = {
"monochrome",
};
static int pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
off_t *begin, off_t offset, int size)
static void pc_proc_infos(unsigned char *nvram, struct seq_file *seq,
void *offset)
{
int checksum;
int type;
@ -521,56 +523,57 @@ static int pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
checksum = __nvram_check_checksum();
spin_unlock_irq(&rtc_lock);
PRINT_PROC("Checksum status: %svalid\n", checksum ? "" : "not ");
seq_printf(seq, "Checksum status: %svalid\n", checksum ? "" : "not ");
PRINT_PROC("# floppies : %d\n",
seq_printf(seq, "# floppies : %d\n",
(nvram[6] & 1) ? (nvram[6] >> 6) + 1 : 0);
PRINT_PROC("Floppy 0 type : ");
seq_printf(seq, "Floppy 0 type : ");
type = nvram[2] >> 4;
if (type < ARRAY_SIZE(floppy_types))
PRINT_PROC("%s\n", floppy_types[type]);
seq_printf(seq, "%s\n", floppy_types[type]);
else
PRINT_PROC("%d (unknown)\n", type);
PRINT_PROC("Floppy 1 type : ");
seq_printf(seq, "%d (unknown)\n", type);
seq_printf(seq, "Floppy 1 type : ");
type = nvram[2] & 0x0f;
if (type < ARRAY_SIZE(floppy_types))
PRINT_PROC("%s\n", floppy_types[type]);
seq_printf(seq, "%s\n", floppy_types[type]);
else
PRINT_PROC("%d (unknown)\n", type);
seq_printf(seq, "%d (unknown)\n", type);
PRINT_PROC("HD 0 type : ");
seq_printf(seq, "HD 0 type : ");
type = nvram[4] >> 4;
if (type)
PRINT_PROC("%02x\n", type == 0x0f ? nvram[11] : type);
seq_printf(seq, "%02x\n", type == 0x0f ? nvram[11] : type);
else
PRINT_PROC("none\n");
seq_printf(seq, "none\n");
PRINT_PROC("HD 1 type : ");
seq_printf(seq, "HD 1 type : ");
type = nvram[4] & 0x0f;
if (type)
PRINT_PROC("%02x\n", type == 0x0f ? nvram[12] : type);
seq_printf(seq, "%02x\n", type == 0x0f ? nvram[12] : type);
else
PRINT_PROC("none\n");
seq_printf(seq, "none\n");
PRINT_PROC("HD type 48 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
seq_printf(seq, "HD type 48 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
nvram[18] | (nvram[19] << 8),
nvram[20], nvram[25],
nvram[21] | (nvram[22] << 8), nvram[23] | (nvram[24] << 8));
PRINT_PROC("HD type 49 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
seq_printf(seq, "HD type 49 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
nvram[39] | (nvram[40] << 8),
nvram[41], nvram[46],
nvram[42] | (nvram[43] << 8), nvram[44] | (nvram[45] << 8));
PRINT_PROC("DOS base memory: %d kB\n", nvram[7] | (nvram[8] << 8));
PRINT_PROC("Extended memory: %d kB (configured), %d kB (tested)\n",
seq_printf(seq, "DOS base memory: %d kB\n", nvram[7] | (nvram[8] << 8));
seq_printf(seq, "Extended memory: %d kB (configured), %d kB (tested)\n",
nvram[9] | (nvram[10] << 8), nvram[34] | (nvram[35] << 8));
PRINT_PROC("Gfx adapter : %s\n", gfx_types[(nvram[6] >> 4) & 3]);
seq_printf(seq, "Gfx adapter : %s\n",
gfx_types[(nvram[6] >> 4) & 3]);
PRINT_PROC("FPU : %sinstalled\n",
seq_printf(seq, "FPU : %sinstalled\n",
(nvram[6] & 2) ? "" : "not ");
return 1;
return;
}
#endif
@ -640,70 +643,71 @@ static char *colors[] = {
"2", "4", "16", "256", "65536", "??", "??", "??"
};
static int atari_proc_infos(unsigned char *nvram, char *buffer, int *len,
off_t *begin, off_t offset, int size)
static void atari_proc_infos(unsigned char *nvram, struct seq_file *seq,
void *offset)
{
int checksum = nvram_check_checksum();
int i;
unsigned vmode;
PRINT_PROC("Checksum status : %svalid\n", checksum ? "" : "not ");
seq_printf(seq, "Checksum status : %svalid\n", checksum ? "" : "not ");
PRINT_PROC("Boot preference : ");
seq_printf(seq, "Boot preference : ");
for (i = ARRAY_SIZE(boot_prefs) - 1; i >= 0; --i) {
if (nvram[1] == boot_prefs[i].val) {
PRINT_PROC("%s\n", boot_prefs[i].name);
seq_printf(seq, "%s\n", boot_prefs[i].name);
break;
}
}
if (i < 0)
PRINT_PROC("0x%02x (undefined)\n", nvram[1]);
seq_printf(seq, "0x%02x (undefined)\n", nvram[1]);
PRINT_PROC("SCSI arbitration : %s\n",
seq_printf(seq, "SCSI arbitration : %s\n",
(nvram[16] & 0x80) ? "on" : "off");
PRINT_PROC("SCSI host ID : ");
seq_printf(seq, "SCSI host ID : ");
if (nvram[16] & 0x80)
PRINT_PROC("%d\n", nvram[16] & 7);
seq_printf(seq, "%d\n", nvram[16] & 7);
else
PRINT_PROC("n/a\n");
seq_printf(seq, "n/a\n");
/* the following entries are defined only for the Falcon */
if ((atari_mch_cookie >> 16) != ATARI_MCH_FALCON)
return 1;
return;
PRINT_PROC("OS language : ");
seq_printf(seq, "OS language : ");
if (nvram[6] < ARRAY_SIZE(languages))
PRINT_PROC("%s\n", languages[nvram[6]]);
seq_printf(seq, "%s\n", languages[nvram[6]]);
else
PRINT_PROC("%u (undefined)\n", nvram[6]);
PRINT_PROC("Keyboard language: ");
seq_printf(seq, "%u (undefined)\n", nvram[6]);
seq_printf(seq, "Keyboard language: ");
if (nvram[7] < ARRAY_SIZE(languages))
PRINT_PROC("%s\n", languages[nvram[7]]);
seq_printf(seq, "%s\n", languages[nvram[7]]);
else
PRINT_PROC("%u (undefined)\n", nvram[7]);
PRINT_PROC("Date format : ");
PRINT_PROC(dateformat[nvram[8] & 7],
seq_printf(seq, "%u (undefined)\n", nvram[7]);
seq_printf(seq, "Date format : ");
seq_printf(seq, dateformat[nvram[8] & 7],
nvram[9] ? nvram[9] : '/', nvram[9] ? nvram[9] : '/');
PRINT_PROC(", %dh clock\n", nvram[8] & 16 ? 24 : 12);
PRINT_PROC("Boot delay : ");
seq_printf(seq, ", %dh clock\n", nvram[8] & 16 ? 24 : 12);
seq_printf(seq, "Boot delay : ");
if (nvram[10] == 0)
PRINT_PROC("default");
seq_printf(seq, "default");
else
PRINT_PROC("%ds%s\n", nvram[10],
seq_printf(seq, "%ds%s\n", nvram[10],
nvram[10] < 8 ? ", no memory test" : "");
vmode = (nvram[14] << 8) || nvram[15];
PRINT_PROC("Video mode : %s colors, %d columns, %s %s monitor\n",
seq_printf(seq,
"Video mode : %s colors, %d columns, %s %s monitor\n",
colors[vmode & 7],
vmode & 8 ? 80 : 40,
vmode & 16 ? "VGA" : "TV", vmode & 32 ? "PAL" : "NTSC");
PRINT_PROC(" %soverscan, compat. mode %s%s\n",
seq_printf(seq, " %soverscan, compat. mode %s%s\n",
vmode & 64 ? "" : "no ",
vmode & 128 ? "on" : "off",
vmode & 256 ?
(vmode & 16 ? ", line doubling" : ", half screen") : "");
return 1;
return;
}
#endif