Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-nvram
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-nvram: [PATCH] nvram - convert PRINT_PROC to seq_file [PATCH] nvram - CodingStyle
This commit is contained in:
Linus Torvalds
commit
2926328554
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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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@ -46,7 +47,7 @@
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/* select machine configuration */
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#if defined(CONFIG_ATARI)
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# define MACH ATARI
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#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) /* and others?? */
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#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) /* and ?? */
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# define MACH PC
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#else
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# error Cannot build nvram driver for this machine configuration.
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@ -106,10 +107,11 @@
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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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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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static DEFINE_SPINLOCK(nvram_state_lock);
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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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@ -133,18 +135,17 @@ static int mach_proc_infos(unsigned char *contents, char *buffer, int *len,
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*
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* It is worth noting that these functions all access bytes of general
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* purpose memory in the NVRAM - that is to say, they all add the
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* NVRAM_FIRST_BYTE offset. Pass them offsets into NVRAM as if you did not
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* NVRAM_FIRST_BYTE offset. Pass them offsets into NVRAM as if you did not
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* know about the RTC cruft.
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*/
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unsigned char
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__nvram_read_byte(int i)
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unsigned char __nvram_read_byte(int i)
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{
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return CMOS_READ(NVRAM_FIRST_BYTE + i);
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}
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EXPORT_SYMBOL(__nvram_read_byte);
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unsigned char
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nvram_read_byte(int i)
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unsigned char nvram_read_byte(int i)
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{
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unsigned long flags;
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unsigned char c;
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@ -154,16 +155,16 @@ nvram_read_byte(int i)
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spin_unlock_irqrestore(&rtc_lock, flags);
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return c;
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}
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EXPORT_SYMBOL(nvram_read_byte);
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/* This races nicely with trying to read with checksum checking (nvram_read) */
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void
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__nvram_write_byte(unsigned char c, int i)
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void __nvram_write_byte(unsigned char c, int i)
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{
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CMOS_WRITE(c, NVRAM_FIRST_BYTE + i);
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}
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EXPORT_SYMBOL(__nvram_write_byte);
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void
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nvram_write_byte(unsigned char c, int i)
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void nvram_write_byte(unsigned char c, int i)
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{
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unsigned long flags;
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@ -171,15 +172,15 @@ nvram_write_byte(unsigned char c, int i)
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__nvram_write_byte(c, i);
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spin_unlock_irqrestore(&rtc_lock, flags);
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}
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EXPORT_SYMBOL(nvram_write_byte);
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int
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__nvram_check_checksum(void)
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int __nvram_check_checksum(void)
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{
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return mach_check_checksum();
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}
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EXPORT_SYMBOL(__nvram_check_checksum);
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int
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nvram_check_checksum(void)
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int nvram_check_checksum(void)
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{
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unsigned long flags;
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int rv;
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@ -189,16 +190,15 @@ nvram_check_checksum(void)
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spin_unlock_irqrestore(&rtc_lock, flags);
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return rv;
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}
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EXPORT_SYMBOL(nvram_check_checksum);
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static void
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__nvram_set_checksum(void)
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static void __nvram_set_checksum(void)
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{
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mach_set_checksum();
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}
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#if 0
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void
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nvram_set_checksum(void)
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void nvram_set_checksum(void)
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{
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unsigned long flags;
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@ -212,7 +212,7 @@ nvram_set_checksum(void)
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* The are the file operation function for user access to /dev/nvram
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*/
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static loff_t nvram_llseek(struct file *file,loff_t offset, int origin )
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static loff_t nvram_llseek(struct file *file, loff_t offset, int origin)
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{
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lock_kernel();
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switch (origin) {
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@ -230,8 +230,8 @@ static loff_t nvram_llseek(struct file *file,loff_t offset, int origin )
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return (offset >= 0) ? (file->f_pos = offset) : -EINVAL;
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}
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static ssize_t
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nvram_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
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static ssize_t nvram_read(struct file *file, char __user *buf,
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size_t count, loff_t *ppos)
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{
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unsigned char contents[NVRAM_BYTES];
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unsigned i = *ppos;
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@ -254,13 +254,13 @@ nvram_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
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return tmp - contents;
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checksum_err:
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checksum_err:
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spin_unlock_irq(&rtc_lock);
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return -EIO;
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}
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static ssize_t
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nvram_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
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static ssize_t nvram_write(struct file *file, const char __user *buf,
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size_t count, loff_t *ppos)
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{
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unsigned char contents[NVRAM_BYTES];
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unsigned i = *ppos;
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@ -287,14 +287,13 @@ nvram_write(struct file *file, const char __user *buf, size_t count, loff_t *ppo
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return tmp - contents;
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checksum_err:
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checksum_err:
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spin_unlock_irq(&rtc_lock);
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return -EIO;
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}
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static int
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nvram_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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static int nvram_ioctl(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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int i;
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@ -315,7 +314,7 @@ nvram_ioctl(struct inode *inode, struct file *file,
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return 0;
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case NVRAM_SETCKS:
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/* just set checksum, contents unchanged (maybe useful after
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/* just set checksum, contents unchanged (maybe useful after
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* checksum garbaged somehow...) */
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if (!capable(CAP_SYS_ADMIN))
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return -EACCES;
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@ -330,8 +329,7 @@ nvram_ioctl(struct inode *inode, struct file *file,
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}
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}
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static int
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nvram_open(struct inode *inode, struct file *file)
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static int nvram_open(struct inode *inode, struct file *file)
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{
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lock_kernel();
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spin_lock(&nvram_state_lock);
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@ -356,8 +354,7 @@ nvram_open(struct inode *inode, struct file *file)
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return 0;
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}
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static int
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nvram_release(struct inode *inode, struct file *file)
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static int nvram_release(struct inode *inode, struct file *file)
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{
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spin_lock(&nvram_state_lock);
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@ -375,48 +372,47 @@ 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
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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
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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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@ -436,8 +432,7 @@ static struct miscdevice nvram_dev = {
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&nvram_fops
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};
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static int __init
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nvram_init(void)
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static int __init nvram_init(void)
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{
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int ret;
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@ -451,23 +446,21 @@ 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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printk(KERN_INFO "Non-volatile memory driver v" NVRAM_VERSION "\n");
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out:
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out:
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return ret;
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outmisc:
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outmisc:
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misc_deregister(&nvram_dev);
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goto out;
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}
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|
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static void __exit
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nvram_cleanup_module(void)
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||||
static void __exit nvram_cleanup_module(void)
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{
|
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remove_proc_entry("driver/nvram", NULL);
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||||
misc_deregister(&nvram_dev);
|
||||
|
|
@ -482,8 +475,7 @@ module_exit(nvram_cleanup_module);
|
|||
|
||||
#if MACH == PC
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||||
|
||||
static int
|
||||
pc_check_checksum(void)
|
||||
static int pc_check_checksum(void)
|
||||
{
|
||||
int i;
|
||||
unsigned short sum = 0;
|
||||
|
|
@ -493,11 +485,10 @@ pc_check_checksum(void)
|
|||
sum += __nvram_read_byte(i);
|
||||
expect = __nvram_read_byte(PC_CKS_LOC)<<8 |
|
||||
__nvram_read_byte(PC_CKS_LOC+1);
|
||||
return ((sum & 0xffff) == expect);
|
||||
return (sum & 0xffff) == expect;
|
||||
}
|
||||
|
||||
static void
|
||||
pc_set_checksum(void)
|
||||
static void pc_set_checksum(void)
|
||||
{
|
||||
int i;
|
||||
unsigned short sum = 0;
|
||||
|
|
@ -522,9 +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;
|
||||
|
|
@ -533,56 +523,57 @@ 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
|
||||
|
||||
|
|
@ -590,20 +581,18 @@ pc_proc_infos(unsigned char *nvram, char *buffer, int *len,
|
|||
|
||||
#if MACH == ATARI
|
||||
|
||||
static int
|
||||
atari_check_checksum(void)
|
||||
static int atari_check_checksum(void)
|
||||
{
|
||||
int i;
|
||||
unsigned char sum = 0;
|
||||
|
||||
for (i = ATARI_CKS_RANGE_START; i <= ATARI_CKS_RANGE_END; ++i)
|
||||
sum += __nvram_read_byte(i);
|
||||
return (__nvram_read_byte(ATARI_CKS_LOC) == (~sum & 0xff) &&
|
||||
__nvram_read_byte(ATARI_CKS_LOC + 1) == (sum & 0xff));
|
||||
return (__nvram_read_byte(ATARI_CKS_LOC) == (~sum & 0xff)) &&
|
||||
(__nvram_read_byte(ATARI_CKS_LOC + 1) == (sum & 0xff));
|
||||
}
|
||||
|
||||
static void
|
||||
atari_set_checksum(void)
|
||||
static void atari_set_checksum(void)
|
||||
{
|
||||
int i;
|
||||
unsigned char sum = 0;
|
||||
|
|
@ -654,82 +643,75 @@ 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
|
||||
|
||||
#endif /* MACH == ATARI */
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
EXPORT_SYMBOL(__nvram_read_byte);
|
||||
EXPORT_SYMBOL(nvram_read_byte);
|
||||
EXPORT_SYMBOL(__nvram_write_byte);
|
||||
EXPORT_SYMBOL(nvram_write_byte);
|
||||
EXPORT_SYMBOL(__nvram_check_checksum);
|
||||
EXPORT_SYMBOL(nvram_check_checksum);
|
||||
MODULE_ALIAS_MISCDEV(NVRAM_MINOR);
|
||||
|
|
|
|||
Reference in New Issue