diff options
Diffstat (limited to 'drivers/char')
-rw-r--r-- | drivers/char/nvram.c | 160 |
1 files changed, 82 insertions, 78 deletions
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c index 1a04f3df91ed..88cee4099be9 100644 --- a/drivers/char/nvram.c +++ b/drivers/char/nvram.c @@ -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); + mach_proc_infos(contents, seq, offset); - if (offset >= begin + len) - return 0; - *start = buffer + (offset - begin); - return (size < begin + len - offset) ? size : begin + len - offset; + return 0; +} +static int nvram_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, nvram_proc_read, NULL); } -/* 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 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 |