[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>hifive-unleashed-5.1
Wim Van Sebroeck
parent
971ddcf8ad
commit
8587b33f4a
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@ -32,9 +32,10 @@
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* added changelog
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* 1.2 Erik Gilling: Cobalt Networks support
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* Tim Hockin: general cleanup, Cobalt support
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* 1.3 Wim Van Sebroeck: convert PRINT_PROC to seq_file
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*/
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#define NVRAM_VERSION "1.2"
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#define NVRAM_VERSION "1.3"
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#include <linux/module.h>
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#include <linux/smp_lock.h>
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@ -106,6 +107,7 @@
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#include <linux/mc146818rtc.h>
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/spinlock.h>
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#include <linux/io.h>
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#include <linux/uaccess.h>
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@ -122,8 +124,8 @@ static int mach_check_checksum(void);
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static void mach_set_checksum(void);
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#ifdef CONFIG_PROC_FS
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static int mach_proc_infos(unsigned char *contents, char *buffer, int *len,
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off_t *begin, off_t offset, int size);
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static void mach_proc_infos(unsigned char *contents, struct seq_file *seq,
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void *offset);
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#endif
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/*
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@ -370,46 +372,47 @@ static int nvram_release(struct inode *inode, struct file *file)
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}
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#ifndef CONFIG_PROC_FS
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static int nvram_read_proc(char *buffer, char **start, off_t offset,
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int size, int *eof, void *data)
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static int nvram_add_proc_fs(void)
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{
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return 0;
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}
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#else
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static int nvram_read_proc(char *buffer, char **start, off_t offset,
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int size, int *eof, void *data)
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static int nvram_proc_read(struct seq_file *seq, void *offset)
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{
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unsigned char contents[NVRAM_BYTES];
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int i, len = 0;
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off_t begin = 0;
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int i = 0;
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spin_lock_irq(&rtc_lock);
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for (i = 0; i < NVRAM_BYTES; ++i)
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contents[i] = __nvram_read_byte(i);
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spin_unlock_irq(&rtc_lock);
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*eof = mach_proc_infos(contents, buffer, &len, &begin, offset, size);
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if (offset >= begin + len)
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return 0;
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*start = buffer + (offset - begin);
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return (size < begin + len - offset) ? size : begin + len - offset;
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mach_proc_infos(contents, seq, offset);
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return 0;
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}
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/* This macro frees the machine specific function from bounds checking and
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* this like that... */
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#define PRINT_PROC(fmt,args...) \
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do { \
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*len += sprintf(buffer + *len, fmt, ##args); \
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if (*begin + *len > offset + size) \
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return 0; \
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if (*begin + *len < offset) { \
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*begin += *len; \
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*len = 0; \
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} \
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} while (0)
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static int nvram_proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, nvram_proc_read, NULL);
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}
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static const struct file_operations nvram_proc_fops = {
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.owner = THIS_MODULE,
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.open = nvram_proc_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static int nvram_add_proc_fs(void)
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{
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if (!proc_create("driver/nvram", 0, NULL, &nvram_proc_fops))
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return -ENOMEM;
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return 0;
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}
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#endif /* CONFIG_PROC_FS */
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@ -443,10 +446,9 @@ static int __init nvram_init(void)
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NVRAM_MINOR);
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goto out;
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}
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if (!create_proc_read_entry("driver/nvram", 0, NULL, nvram_read_proc,
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NULL)) {
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ret = nvram_add_proc_fs();
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if (ret) {
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printk(KERN_ERR "nvram: can't create /proc/driver/nvram\n");
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ret = -ENOMEM;
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goto outmisc;
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}
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ret = 0;
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@ -511,8 +513,8 @@ static char *gfx_types[] = {
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"monochrome",
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};
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static int pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
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off_t *begin, off_t offset, int size)
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static void pc_proc_infos(unsigned char *nvram, struct seq_file *seq,
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void *offset)
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{
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int checksum;
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int type;
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@ -521,56 +523,57 @@ static int pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
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checksum = __nvram_check_checksum();
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spin_unlock_irq(&rtc_lock);
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PRINT_PROC("Checksum status: %svalid\n", checksum ? "" : "not ");
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seq_printf(seq, "Checksum status: %svalid\n", checksum ? "" : "not ");
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PRINT_PROC("# floppies : %d\n",
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seq_printf(seq, "# floppies : %d\n",
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(nvram[6] & 1) ? (nvram[6] >> 6) + 1 : 0);
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PRINT_PROC("Floppy 0 type : ");
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seq_printf(seq, "Floppy 0 type : ");
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type = nvram[2] >> 4;
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if (type < ARRAY_SIZE(floppy_types))
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PRINT_PROC("%s\n", floppy_types[type]);
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seq_printf(seq, "%s\n", floppy_types[type]);
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else
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PRINT_PROC("%d (unknown)\n", type);
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PRINT_PROC("Floppy 1 type : ");
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seq_printf(seq, "%d (unknown)\n", type);
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seq_printf(seq, "Floppy 1 type : ");
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type = nvram[2] & 0x0f;
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if (type < ARRAY_SIZE(floppy_types))
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PRINT_PROC("%s\n", floppy_types[type]);
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seq_printf(seq, "%s\n", floppy_types[type]);
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else
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PRINT_PROC("%d (unknown)\n", type);
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seq_printf(seq, "%d (unknown)\n", type);
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PRINT_PROC("HD 0 type : ");
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seq_printf(seq, "HD 0 type : ");
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type = nvram[4] >> 4;
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if (type)
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PRINT_PROC("%02x\n", type == 0x0f ? nvram[11] : type);
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seq_printf(seq, "%02x\n", type == 0x0f ? nvram[11] : type);
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else
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PRINT_PROC("none\n");
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seq_printf(seq, "none\n");
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PRINT_PROC("HD 1 type : ");
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seq_printf(seq, "HD 1 type : ");
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type = nvram[4] & 0x0f;
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if (type)
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PRINT_PROC("%02x\n", type == 0x0f ? nvram[12] : type);
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seq_printf(seq, "%02x\n", type == 0x0f ? nvram[12] : type);
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else
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PRINT_PROC("none\n");
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seq_printf(seq, "none\n");
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PRINT_PROC("HD type 48 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
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seq_printf(seq, "HD type 48 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
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nvram[18] | (nvram[19] << 8),
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nvram[20], nvram[25],
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nvram[21] | (nvram[22] << 8), nvram[23] | (nvram[24] << 8));
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PRINT_PROC("HD type 49 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
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seq_printf(seq, "HD type 49 data: %d/%d/%d C/H/S, precomp %d, lz %d\n",
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nvram[39] | (nvram[40] << 8),
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nvram[41], nvram[46],
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nvram[42] | (nvram[43] << 8), nvram[44] | (nvram[45] << 8));
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PRINT_PROC("DOS base memory: %d kB\n", nvram[7] | (nvram[8] << 8));
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PRINT_PROC("Extended memory: %d kB (configured), %d kB (tested)\n",
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seq_printf(seq, "DOS base memory: %d kB\n", nvram[7] | (nvram[8] << 8));
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seq_printf(seq, "Extended memory: %d kB (configured), %d kB (tested)\n",
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nvram[9] | (nvram[10] << 8), nvram[34] | (nvram[35] << 8));
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PRINT_PROC("Gfx adapter : %s\n", gfx_types[(nvram[6] >> 4) & 3]);
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seq_printf(seq, "Gfx adapter : %s\n",
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gfx_types[(nvram[6] >> 4) & 3]);
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PRINT_PROC("FPU : %sinstalled\n",
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seq_printf(seq, "FPU : %sinstalled\n",
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(nvram[6] & 2) ? "" : "not ");
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return 1;
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return;
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}
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#endif
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@ -640,70 +643,71 @@ static char *colors[] = {
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"2", "4", "16", "256", "65536", "??", "??", "??"
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};
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static int atari_proc_infos(unsigned char *nvram, char *buffer, int *len,
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off_t *begin, off_t offset, int size)
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static void atari_proc_infos(unsigned char *nvram, struct seq_file *seq,
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void *offset)
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{
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int checksum = nvram_check_checksum();
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int i;
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unsigned vmode;
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PRINT_PROC("Checksum status : %svalid\n", checksum ? "" : "not ");
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seq_printf(seq, "Checksum status : %svalid\n", checksum ? "" : "not ");
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PRINT_PROC("Boot preference : ");
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seq_printf(seq, "Boot preference : ");
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for (i = ARRAY_SIZE(boot_prefs) - 1; i >= 0; --i) {
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if (nvram[1] == boot_prefs[i].val) {
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PRINT_PROC("%s\n", boot_prefs[i].name);
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seq_printf(seq, "%s\n", boot_prefs[i].name);
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break;
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}
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}
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if (i < 0)
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PRINT_PROC("0x%02x (undefined)\n", nvram[1]);
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seq_printf(seq, "0x%02x (undefined)\n", nvram[1]);
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PRINT_PROC("SCSI arbitration : %s\n",
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seq_printf(seq, "SCSI arbitration : %s\n",
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(nvram[16] & 0x80) ? "on" : "off");
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PRINT_PROC("SCSI host ID : ");
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seq_printf(seq, "SCSI host ID : ");
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if (nvram[16] & 0x80)
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PRINT_PROC("%d\n", nvram[16] & 7);
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seq_printf(seq, "%d\n", nvram[16] & 7);
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else
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PRINT_PROC("n/a\n");
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seq_printf(seq, "n/a\n");
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/* the following entries are defined only for the Falcon */
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if ((atari_mch_cookie >> 16) != ATARI_MCH_FALCON)
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return 1;
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return;
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PRINT_PROC("OS language : ");
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seq_printf(seq, "OS language : ");
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if (nvram[6] < ARRAY_SIZE(languages))
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PRINT_PROC("%s\n", languages[nvram[6]]);
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seq_printf(seq, "%s\n", languages[nvram[6]]);
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else
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PRINT_PROC("%u (undefined)\n", nvram[6]);
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PRINT_PROC("Keyboard language: ");
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seq_printf(seq, "%u (undefined)\n", nvram[6]);
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seq_printf(seq, "Keyboard language: ");
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if (nvram[7] < ARRAY_SIZE(languages))
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PRINT_PROC("%s\n", languages[nvram[7]]);
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seq_printf(seq, "%s\n", languages[nvram[7]]);
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else
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PRINT_PROC("%u (undefined)\n", nvram[7]);
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PRINT_PROC("Date format : ");
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PRINT_PROC(dateformat[nvram[8] & 7],
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seq_printf(seq, "%u (undefined)\n", nvram[7]);
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seq_printf(seq, "Date format : ");
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seq_printf(seq, dateformat[nvram[8] & 7],
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nvram[9] ? nvram[9] : '/', nvram[9] ? nvram[9] : '/');
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PRINT_PROC(", %dh clock\n", nvram[8] & 16 ? 24 : 12);
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PRINT_PROC("Boot delay : ");
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seq_printf(seq, ", %dh clock\n", nvram[8] & 16 ? 24 : 12);
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seq_printf(seq, "Boot delay : ");
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if (nvram[10] == 0)
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PRINT_PROC("default");
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seq_printf(seq, "default");
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else
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PRINT_PROC("%ds%s\n", nvram[10],
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seq_printf(seq, "%ds%s\n", nvram[10],
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nvram[10] < 8 ? ", no memory test" : "");
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vmode = (nvram[14] << 8) || nvram[15];
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PRINT_PROC("Video mode : %s colors, %d columns, %s %s monitor\n",
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seq_printf(seq,
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"Video mode : %s colors, %d columns, %s %s monitor\n",
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colors[vmode & 7],
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vmode & 8 ? 80 : 40,
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vmode & 16 ? "VGA" : "TV", vmode & 32 ? "PAL" : "NTSC");
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PRINT_PROC(" %soverscan, compat. mode %s%s\n",
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seq_printf(seq, " %soverscan, compat. mode %s%s\n",
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vmode & 64 ? "" : "no ",
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vmode & 128 ? "on" : "off",
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vmode & 256 ?
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(vmode & 16 ? ", line doubling" : ", half screen") : "");
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return 1;
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return;
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}
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#endif
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