/*
- * $Id: mtdchar.c,v 1.54 2003/05/21 10:50:43 dwmw2 Exp $
+ * $Id: mtdchar.c,v 1.76 2005/11/07 11:14:20 gleixner Exp $
*
* Character-device access to raw MTD devices.
*
*/
-#include <linux/config.h>
+#include <linux/device.h>
+#include <linux/fs.h>
+#include <linux/err.h>
+#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/mtd/mtd.h>
#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/fs.h>
+#include <linux/sched.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/compatmac.h>
+
#include <asm/uaccess.h>
-#ifdef CONFIG_DEVFS_FS
-#include <linux/devfs_fs_kernel.h>
-static void mtd_notify_add(struct mtd_info* mtd);
-static void mtd_notify_remove(struct mtd_info* mtd);
+static struct class *mtd_class;
+
+static void mtd_notify_add(struct mtd_info* mtd)
+{
+ if (!mtd)
+ return;
+
+ class_device_create(mtd_class, NULL, MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
+ NULL, "mtd%d", mtd->index);
+
+ class_device_create(mtd_class, NULL,
+ MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
+ NULL, "mtd%dro", mtd->index);
+}
+
+static void mtd_notify_remove(struct mtd_info* mtd)
+{
+ if (!mtd)
+ return;
+
+ class_device_destroy(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2));
+ class_device_destroy(mtd_class, MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1));
+}
static struct mtd_notifier notifier = {
.add = mtd_notify_add,
.remove = mtd_notify_remove,
};
-#endif
+/*
+ * Data structure to hold the pointer to the mtd device as well
+ * as mode information ofr various use cases.
+ */
+struct mtd_file_info {
+ struct mtd_info *mtd;
+ enum mtd_file_modes mode;
+};
static loff_t mtd_lseek (struct file *file, loff_t offset, int orig)
{
- struct mtd_info *mtd=(struct mtd_info *)file->private_data;
+ struct mtd_file_info *mfi = file->private_data;
+ struct mtd_info *mtd = mfi->mtd;
switch (orig) {
- case 0:
- /* SEEK_SET */
- file->f_pos = offset;
+ case SEEK_SET:
break;
- case 1:
- /* SEEK_CUR */
- file->f_pos += offset;
+ case SEEK_CUR:
+ offset += file->f_pos;
break;
- case 2:
- /* SEEK_END */
- file->f_pos =mtd->size + offset;
+ case SEEK_END:
+ offset += mtd->size;
break;
default:
return -EINVAL;
}
- if (file->f_pos < 0)
- file->f_pos = 0;
- else if (file->f_pos >= mtd->size)
- file->f_pos = mtd->size - 1;
+ if (offset >= 0 && offset <= mtd->size)
+ return file->f_pos = offset;
- return file->f_pos;
+ return -EINVAL;
}
int minor = iminor(inode);
int devnum = minor >> 1;
struct mtd_info *mtd;
+ struct mtd_file_info *mfi;
DEBUG(MTD_DEBUG_LEVEL0, "MTD_open\n");
return -EACCES;
mtd = get_mtd_device(NULL, devnum);
-
- if (!mtd)
- return -ENODEV;
-
+
+ if (IS_ERR(mtd))
+ return PTR_ERR(mtd);
+
if (MTD_ABSENT == mtd->type) {
put_mtd_device(mtd);
return -ENODEV;
}
- file->private_data = mtd;
-
/* You can't open it RW if it's not a writeable device */
if ((file->f_mode & 2) && !(mtd->flags & MTD_WRITEABLE)) {
put_mtd_device(mtd);
return -EACCES;
}
-
+
+ mfi = kzalloc(sizeof(*mfi), GFP_KERNEL);
+ if (!mfi) {
+ put_mtd_device(mtd);
+ return -ENOMEM;
+ }
+ mfi->mtd = mtd;
+ file->private_data = mfi;
+
return 0;
} /* mtd_open */
static int mtd_close(struct inode *inode, struct file *file)
{
- struct mtd_info *mtd;
+ struct mtd_file_info *mfi = file->private_data;
+ struct mtd_info *mtd = mfi->mtd;
DEBUG(MTD_DEBUG_LEVEL0, "MTD_close\n");
- mtd = (struct mtd_info *)file->private_data;
-
if (mtd->sync)
mtd->sync(mtd);
-
+
put_mtd_device(mtd);
+ file->private_data = NULL;
+ kfree(mfi);
return 0;
} /* mtd_close */
*/
#define MAX_KMALLOC_SIZE 0x20000
-static ssize_t mtd_read(struct file *file, char *buf, size_t count,loff_t *ppos)
+static ssize_t mtd_read(struct file *file, char __user *buf, size_t count,loff_t *ppos)
{
- struct mtd_info *mtd = (struct mtd_info *)file->private_data;
+ struct mtd_file_info *mfi = file->private_data;
+ struct mtd_info *mtd = mfi->mtd;
size_t retlen=0;
size_t total_retlen=0;
int ret=0;
int len;
char *kbuf;
-
+
DEBUG(MTD_DEBUG_LEVEL0,"MTD_read\n");
if (*ppos + count > mtd->size)
if (!count)
return 0;
-
+
/* FIXME: Use kiovec in 2.5 to lock down the user's buffers
and pass them directly to the MTD functions */
+
+ if (count > MAX_KMALLOC_SIZE)
+ kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
+ else
+ kbuf=kmalloc(count, GFP_KERNEL);
+
+ if (!kbuf)
+ return -ENOMEM;
+
while (count) {
- if (count > MAX_KMALLOC_SIZE)
+
+ if (count > MAX_KMALLOC_SIZE)
len = MAX_KMALLOC_SIZE;
else
len = count;
- kbuf=kmalloc(len,GFP_KERNEL);
- if (!kbuf)
- return -ENOMEM;
-
- ret = MTD_READ(mtd, *ppos, len, &retlen, kbuf);
- if (!ret) {
+ switch (mfi->mode) {
+ case MTD_MODE_OTP_FACTORY:
+ ret = mtd->read_fact_prot_reg(mtd, *ppos, len, &retlen, kbuf);
+ break;
+ case MTD_MODE_OTP_USER:
+ ret = mtd->read_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
+ break;
+ case MTD_MODE_RAW:
+ {
+ struct mtd_oob_ops ops;
+
+ ops.mode = MTD_OOB_RAW;
+ ops.datbuf = kbuf;
+ ops.oobbuf = NULL;
+ ops.len = len;
+
+ ret = mtd->read_oob(mtd, *ppos, &ops);
+ retlen = ops.retlen;
+ break;
+ }
+ default:
+ ret = mtd->read(mtd, *ppos, len, &retlen, kbuf);
+ }
+ /* Nand returns -EBADMSG on ecc errors, but it returns
+ * the data. For our userspace tools it is important
+ * to dump areas with ecc errors !
+ * For kernel internal usage it also might return -EUCLEAN
+ * to signal the caller that a bitflip has occured and has
+ * been corrected by the ECC algorithm.
+ * Userspace software which accesses NAND this way
+ * must be aware of the fact that it deals with NAND
+ */
+ if (!ret || (ret == -EUCLEAN) || (ret == -EBADMSG)) {
*ppos += retlen;
if (copy_to_user(buf, kbuf, retlen)) {
- kfree(kbuf);
+ kfree(kbuf);
return -EFAULT;
}
else
count -= retlen;
buf += retlen;
+ if (retlen == 0)
+ count = 0;
}
else {
kfree(kbuf);
return ret;
}
-
- kfree(kbuf);
+
}
-
+
+ kfree(kbuf);
return total_retlen;
} /* mtd_read */
-static ssize_t mtd_write(struct file *file, const char *buf, size_t count,loff_t *ppos)
+static ssize_t mtd_write(struct file *file, const char __user *buf, size_t count,loff_t *ppos)
{
- struct mtd_info *mtd = (struct mtd_info *)file->private_data;
+ struct mtd_file_info *mfi = file->private_data;
+ struct mtd_info *mtd = mfi->mtd;
char *kbuf;
size_t retlen;
size_t total_retlen=0;
int len;
DEBUG(MTD_DEBUG_LEVEL0,"MTD_write\n");
-
+
if (*ppos == mtd->size)
return -ENOSPC;
-
+
if (*ppos + count > mtd->size)
count = mtd->size - *ppos;
if (!count)
return 0;
+ if (count > MAX_KMALLOC_SIZE)
+ kbuf=kmalloc(MAX_KMALLOC_SIZE, GFP_KERNEL);
+ else
+ kbuf=kmalloc(count, GFP_KERNEL);
+
+ if (!kbuf)
+ return -ENOMEM;
+
while (count) {
- if (count > MAX_KMALLOC_SIZE)
+
+ if (count > MAX_KMALLOC_SIZE)
len = MAX_KMALLOC_SIZE;
else
len = count;
- kbuf=kmalloc(len,GFP_KERNEL);
- if (!kbuf) {
- printk("kmalloc is null\n");
- return -ENOMEM;
- }
-
if (copy_from_user(kbuf, buf, len)) {
kfree(kbuf);
return -EFAULT;
}
-
- ret = (*(mtd->write))(mtd, *ppos, len, &retlen, kbuf);
+
+ switch (mfi->mode) {
+ case MTD_MODE_OTP_FACTORY:
+ ret = -EROFS;
+ break;
+ case MTD_MODE_OTP_USER:
+ if (!mtd->write_user_prot_reg) {
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ ret = mtd->write_user_prot_reg(mtd, *ppos, len, &retlen, kbuf);
+ break;
+
+ case MTD_MODE_RAW:
+ {
+ struct mtd_oob_ops ops;
+
+ ops.mode = MTD_OOB_RAW;
+ ops.datbuf = kbuf;
+ ops.oobbuf = NULL;
+ ops.len = len;
+
+ ret = mtd->write_oob(mtd, *ppos, &ops);
+ retlen = ops.retlen;
+ break;
+ }
+
+ default:
+ ret = (*(mtd->write))(mtd, *ppos, len, &retlen, kbuf);
+ }
if (!ret) {
*ppos += retlen;
total_retlen += retlen;
kfree(kbuf);
return ret;
}
-
- kfree(kbuf);
}
+ kfree(kbuf);
return total_retlen;
} /* mtd_write */
IOCTL calls for getting device parameters.
======================================================================*/
-static void mtd_erase_callback (struct erase_info *instr)
+static void mtdchar_erase_callback (struct erase_info *instr)
{
wake_up((wait_queue_head_t *)instr->priv);
}
+#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP)
+static int otp_select_filemode(struct mtd_file_info *mfi, int mode)
+{
+ struct mtd_info *mtd = mfi->mtd;
+ int ret = 0;
+
+ switch (mode) {
+ case MTD_OTP_FACTORY:
+ if (!mtd->read_fact_prot_reg)
+ ret = -EOPNOTSUPP;
+ else
+ mfi->mode = MTD_MODE_OTP_FACTORY;
+ break;
+ case MTD_OTP_USER:
+ if (!mtd->read_fact_prot_reg)
+ ret = -EOPNOTSUPP;
+ else
+ mfi->mode = MTD_MODE_OTP_USER;
+ break;
+ default:
+ ret = -EINVAL;
+ case MTD_OTP_OFF:
+ break;
+ }
+ return ret;
+}
+#else
+# define otp_select_filemode(f,m) -EOPNOTSUPP
+#endif
+
static int mtd_ioctl(struct inode *inode, struct file *file,
u_int cmd, u_long arg)
{
- struct mtd_info *mtd = (struct mtd_info *)file->private_data;
+ struct mtd_file_info *mfi = file->private_data;
+ struct mtd_info *mtd = mfi->mtd;
+ void __user *argp = (void __user *)arg;
int ret = 0;
u_long size;
-
+ struct mtd_info_user info;
+
DEBUG(MTD_DEBUG_LEVEL0, "MTD_ioctl\n");
size = (cmd & IOCSIZE_MASK) >> IOCSIZE_SHIFT;
if (cmd & IOC_IN) {
- ret = verify_area(VERIFY_READ, (char *)arg, size);
- if (ret) return ret;
+ if (!access_ok(VERIFY_READ, argp, size))
+ return -EFAULT;
}
if (cmd & IOC_OUT) {
- ret = verify_area(VERIFY_WRITE, (char *)arg, size);
- if (ret) return ret;
+ if (!access_ok(VERIFY_WRITE, argp, size))
+ return -EFAULT;
}
-
+
switch (cmd) {
case MEMGETREGIONCOUNT:
- if (copy_to_user((int *) arg, &(mtd->numeraseregions), sizeof(int)))
+ if (copy_to_user(argp, &(mtd->numeraseregions), sizeof(int)))
return -EFAULT;
break;
{
struct region_info_user ur;
- if (copy_from_user( &ur,
- (struct region_info_user *)arg,
- sizeof(struct region_info_user))) {
+ if (copy_from_user(&ur, argp, sizeof(struct region_info_user)))
return -EFAULT;
- }
if (ur.regionindex >= mtd->numeraseregions)
return -EINVAL;
- if (copy_to_user((struct mtd_erase_region_info *) arg,
- &(mtd->eraseregions[ur.regionindex]),
+ if (copy_to_user(argp, &(mtd->eraseregions[ur.regionindex]),
sizeof(struct mtd_erase_region_info)))
return -EFAULT;
break;
}
case MEMGETINFO:
- if (copy_to_user((struct mtd_info *)arg, mtd,
- sizeof(struct mtd_info_user)))
+ info.type = mtd->type;
+ info.flags = mtd->flags;
+ info.size = mtd->size;
+ info.erasesize = mtd->erasesize;
+ info.writesize = mtd->writesize;
+ info.oobsize = mtd->oobsize;
+ info.ecctype = mtd->ecctype;
+ info.eccsize = mtd->eccsize;
+ if (copy_to_user(argp, &info, sizeof(struct mtd_info_user)))
return -EFAULT;
break;
if(!(file->f_mode & 2))
return -EPERM;
- erase=kmalloc(sizeof(struct erase_info),GFP_KERNEL);
+ erase=kzalloc(sizeof(struct erase_info),GFP_KERNEL);
if (!erase)
ret = -ENOMEM;
else {
init_waitqueue_head(&waitq);
- memset (erase,0,sizeof(struct erase_info));
- if (copy_from_user(&erase->addr, (u_long *)arg,
- 2 * sizeof(u_long))) {
+ if (copy_from_user(&erase->addr, argp,
+ sizeof(struct erase_info_user))) {
kfree(erase);
return -EFAULT;
}
erase->mtd = mtd;
- erase->callback = mtd_erase_callback;
+ erase->callback = mtdchar_erase_callback;
erase->priv = (unsigned long)&waitq;
-
+
/*
FIXME: Allow INTERRUPTIBLE. Which means
not having the wait_queue head on the stack.
-
+
If the wq_head is on the stack, and we
leave because we got interrupted, then the
wq_head is no longer there when the
case MEMWRITEOOB:
{
struct mtd_oob_buf buf;
- void *databuf;
- ssize_t retlen;
-
+ struct mtd_oob_ops ops;
+
if(!(file->f_mode & 2))
return -EPERM;
- if (copy_from_user(&buf, (struct mtd_oob_buf *)arg, sizeof(struct mtd_oob_buf)))
+ if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
return -EFAULT;
-
- if (buf.length > 0x4096)
+
+ if (buf.length > 4096)
return -EINVAL;
if (!mtd->write_oob)
ret = -EOPNOTSUPP;
else
- ret = verify_area(VERIFY_READ, (char *)buf.ptr, buf.length);
+ ret = access_ok(VERIFY_READ, buf.ptr,
+ buf.length) ? 0 : EFAULT;
if (ret)
return ret;
- databuf = kmalloc(buf.length, GFP_KERNEL);
- if (!databuf)
+ ops.ooblen = buf.length;
+ ops.ooboffs = buf.start & (mtd->oobsize - 1);
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
+
+ if (ops.ooboffs && ops.ooblen > (mtd->oobsize - ops.ooboffs))
+ return -EINVAL;
+
+ ops.oobbuf = kmalloc(buf.length, GFP_KERNEL);
+ if (!ops.oobbuf)
return -ENOMEM;
-
- if (copy_from_user(databuf, buf.ptr, buf.length)) {
- kfree(databuf);
+
+ if (copy_from_user(ops.oobbuf, buf.ptr, buf.length)) {
+ kfree(ops.oobbuf);
return -EFAULT;
}
- ret = (mtd->write_oob)(mtd, buf.start, buf.length, &retlen, databuf);
+ buf.start &= ~(mtd->oobsize - 1);
+ ret = mtd->write_oob(mtd, buf.start, &ops);
- if (copy_to_user((void *)arg + sizeof(u_int32_t), &retlen, sizeof(u_int32_t)))
+ if (copy_to_user(argp + sizeof(uint32_t), &ops.oobretlen,
+ sizeof(uint32_t)))
ret = -EFAULT;
- kfree(databuf);
+ kfree(ops.oobbuf);
break;
}
case MEMREADOOB:
{
struct mtd_oob_buf buf;
- void *databuf;
- ssize_t retlen;
+ struct mtd_oob_ops ops;
- if (copy_from_user(&buf, (struct mtd_oob_buf *)arg, sizeof(struct mtd_oob_buf)))
+ if (copy_from_user(&buf, argp, sizeof(struct mtd_oob_buf)))
return -EFAULT;
-
- if (buf.length > 0x4096)
+
+ if (buf.length > 4096)
return -EINVAL;
if (!mtd->read_oob)
ret = -EOPNOTSUPP;
else
- ret = verify_area(VERIFY_WRITE, (char *)buf.ptr, buf.length);
-
+ ret = access_ok(VERIFY_WRITE, buf.ptr,
+ buf.length) ? 0 : -EFAULT;
if (ret)
return ret;
- databuf = kmalloc(buf.length, GFP_KERNEL);
- if (!databuf)
+ ops.ooblen = buf.length;
+ ops.ooboffs = buf.start & (mtd->oobsize - 1);
+ ops.datbuf = NULL;
+ ops.mode = MTD_OOB_PLACE;
+
+ if (ops.ooboffs && ops.len > (mtd->oobsize - ops.ooboffs))
+ return -EINVAL;
+
+ ops.oobbuf = kmalloc(buf.length, GFP_KERNEL);
+ if (!ops.oobbuf)
return -ENOMEM;
-
- ret = (mtd->read_oob)(mtd, buf.start, buf.length, &retlen, databuf);
- if (copy_to_user((void *)arg + sizeof(u_int32_t), &retlen, sizeof(u_int32_t)))
+ buf.start &= ~(mtd->oobsize - 1);
+ ret = mtd->read_oob(mtd, buf.start, &ops);
+
+ if (put_user(ops.oobretlen, (uint32_t __user *)argp))
ret = -EFAULT;
- else if (retlen && copy_to_user(buf.ptr, databuf, retlen))
+ else if (ops.oobretlen && copy_to_user(buf.ptr, ops.oobbuf,
+ ops.oobretlen))
ret = -EFAULT;
-
- kfree(databuf);
+
+ kfree(ops.oobbuf);
break;
}
case MEMLOCK:
{
- unsigned long adrs[2];
+ struct erase_info_user info;
- if (copy_from_user(adrs ,(void *)arg, 2* sizeof(unsigned long)))
+ if (copy_from_user(&info, argp, sizeof(info)))
return -EFAULT;
if (!mtd->lock)
ret = -EOPNOTSUPP;
else
- ret = mtd->lock(mtd, adrs[0], adrs[1]);
+ ret = mtd->lock(mtd, info.start, info.length);
break;
}
case MEMUNLOCK:
{
- unsigned long adrs[2];
+ struct erase_info_user info;
- if (copy_from_user(adrs, (void *)arg, 2* sizeof(unsigned long)))
+ if (copy_from_user(&info, argp, sizeof(info)))
return -EFAULT;
if (!mtd->unlock)
ret = -EOPNOTSUPP;
else
- ret = mtd->unlock(mtd, adrs[0], adrs[1]);
+ ret = mtd->unlock(mtd, info.start, info.length);
+ break;
+ }
+
+ /* Legacy interface */
+ case MEMGETOOBSEL:
+ {
+ struct nand_oobinfo oi;
+
+ if (!mtd->ecclayout)
+ return -EOPNOTSUPP;
+ if (mtd->ecclayout->eccbytes > ARRAY_SIZE(oi.eccpos))
+ return -EINVAL;
+
+ oi.useecc = MTD_NANDECC_AUTOPLACE;
+ memcpy(&oi.eccpos, mtd->ecclayout->eccpos, sizeof(oi.eccpos));
+ memcpy(&oi.oobfree, mtd->ecclayout->oobfree,
+ sizeof(oi.oobfree));
+ oi.eccbytes = mtd->ecclayout->eccbytes;
+
+ if (copy_to_user(argp, &oi, sizeof(struct nand_oobinfo)))
+ return -EFAULT;
+ break;
+ }
+
+ case MEMGETBADBLOCK:
+ {
+ loff_t offs;
+
+ if (copy_from_user(&offs, argp, sizeof(loff_t)))
+ return -EFAULT;
+ if (!mtd->block_isbad)
+ ret = -EOPNOTSUPP;
+ else
+ return mtd->block_isbad(mtd, offs);
+ break;
+ }
+
+ case MEMSETBADBLOCK:
+ {
+ loff_t offs;
+
+ if (copy_from_user(&offs, argp, sizeof(loff_t)))
+ return -EFAULT;
+ if (!mtd->block_markbad)
+ ret = -EOPNOTSUPP;
+ else
+ return mtd->block_markbad(mtd, offs);
+ break;
+ }
+
+#if defined(CONFIG_MTD_OTP) || defined(CONFIG_MTD_ONENAND_OTP)
+ case OTPSELECT:
+ {
+ int mode;
+ if (copy_from_user(&mode, argp, sizeof(int)))
+ return -EFAULT;
+
+ mfi->mode = MTD_MODE_NORMAL;
+
+ ret = otp_select_filemode(mfi, mode);
+
+ file->f_pos = 0;
+ break;
+ }
+
+ case OTPGETREGIONCOUNT:
+ case OTPGETREGIONINFO:
+ {
+ struct otp_info *buf = kmalloc(4096, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ ret = -EOPNOTSUPP;
+ switch (mfi->mode) {
+ case MTD_MODE_OTP_FACTORY:
+ if (mtd->get_fact_prot_info)
+ ret = mtd->get_fact_prot_info(mtd, buf, 4096);
+ break;
+ case MTD_MODE_OTP_USER:
+ if (mtd->get_user_prot_info)
+ ret = mtd->get_user_prot_info(mtd, buf, 4096);
+ break;
+ default:
+ break;
+ }
+ if (ret >= 0) {
+ if (cmd == OTPGETREGIONCOUNT) {
+ int nbr = ret / sizeof(struct otp_info);
+ ret = copy_to_user(argp, &nbr, sizeof(int));
+ } else
+ ret = copy_to_user(argp, buf, ret);
+ if (ret)
+ ret = -EFAULT;
+ }
+ kfree(buf);
break;
}
- case MEMSETOOBSEL:
+ case OTPLOCK:
{
- if (copy_from_user(&mtd->oobinfo ,(void *)arg, sizeof(struct nand_oobinfo)))
+ struct otp_info info;
+
+ if (mfi->mode != MTD_MODE_OTP_USER)
+ return -EINVAL;
+ if (copy_from_user(&info, argp, sizeof(info)))
return -EFAULT;
+ if (!mtd->lock_user_prot_reg)
+ return -EOPNOTSUPP;
+ ret = mtd->lock_user_prot_reg(mtd, info.start, info.length);
+ break;
+ }
+#endif
+
+ case ECCGETLAYOUT:
+ {
+ if (!mtd->ecclayout)
+ return -EOPNOTSUPP;
+
+ if (copy_to_user(argp, mtd->ecclayout,
+ sizeof(struct nand_ecclayout)))
+ return -EFAULT;
+ break;
+ }
+
+ case ECCGETSTATS:
+ {
+ if (copy_to_user(argp, &mtd->ecc_stats,
+ sizeof(struct mtd_ecc_stats)))
+ return -EFAULT;
+ break;
+ }
+
+ case MTDFILEMODE:
+ {
+ mfi->mode = 0;
+
+ switch(arg) {
+ case MTD_MODE_OTP_FACTORY:
+ case MTD_MODE_OTP_USER:
+ ret = otp_select_filemode(mfi, arg);
+ break;
+
+ case MTD_MODE_RAW:
+ if (!mtd->read_oob || !mtd->write_oob)
+ return -EOPNOTSUPP;
+ mfi->mode = arg;
+
+ case MTD_MODE_NORMAL:
+ break;
+ default:
+ ret = -EINVAL;
+ }
+ file->f_pos = 0;
break;
}
-
+
default:
- DEBUG(MTD_DEBUG_LEVEL0, "Invalid ioctl %x (MEMGETINFO = %x)\n", cmd, MEMGETINFO);
ret = -ENOTTY;
}
.release = mtd_close,
};
-
-#ifdef CONFIG_DEVFS_FS
-/* Notification that a new device has been added. Create the devfs entry for
- * it. */
-
-static void mtd_notify_add(struct mtd_info* mtd)
-{
- if (!mtd)
- return;
- devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2),
- S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%d", mtd->index);
- devfs_mk_cdev(MKDEV(MTD_CHAR_MAJOR, mtd->index*2+1),
- S_IFCHR | S_IRUGO | S_IWUGO, "mtd/%dro", mtd->index);
-}
-
-static void mtd_notify_remove(struct mtd_info* mtd)
-{
- if (!mtd)
- return;
- devfs_remove("mtd/%d", mtd->index);
- devfs_remove("mtd/%dro", mtd->index);
-}
-#endif
-
static int __init init_mtdchar(void)
{
if (register_chrdev(MTD_CHAR_MAJOR, "mtd", &mtd_fops)) {
return -EAGAIN;
}
-#ifdef CONFIG_DEVFS_FS
- devfs_mk_dir("mtd");
+ mtd_class = class_create(THIS_MODULE, "mtd");
+
+ if (IS_ERR(mtd_class)) {
+ printk(KERN_ERR "Error creating mtd class.\n");
+ unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
+ return PTR_ERR(mtd_class);
+ }
register_mtd_user(¬ifier);
-#endif
return 0;
}
static void __exit cleanup_mtdchar(void)
{
-#ifdef CONFIG_DEVFS_FS
unregister_mtd_user(¬ifier);
- devfs_remove("mtd");
-#endif
+ class_destroy(mtd_class);
unregister_chrdev(MTD_CHAR_MAJOR, "mtd");
}
git://git.onelab.eu / linux-2.6.git / blobdiff