Add Block-to-character device driver
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1237 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
f47adddbb2
commit
6aeb99bc51
@ -550,4 +550,6 @@
|
||||
* Each NSH command can not be disabled through a configuration setting. All of these
|
||||
settings make the configuration of NSH potentially complex but also allow it to squeeze
|
||||
into very small memory footprints.
|
||||
* Added a block to character (BCH) driver. This is kind of the reverse of the loop
|
||||
device; it allows you access a block device like a character device.
|
||||
|
||||
|
||||
@ -1193,6 +1193,8 @@ nuttx-0.3.18 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
* Each NSH command can not be disabled through a configuration setting. All of these
|
||||
settings make the configuration of NSH potentially complex but also allow it to squeeze
|
||||
into very small memory footprints.
|
||||
* Added a block to character (BCH) driver. This is kind of the reverse of the loop
|
||||
device; it allows you access a block device like a character device.
|
||||
|
||||
pascal-0.1.3 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
|
||||
|
||||
|
||||
@ -53,7 +53,16 @@ ROOTDEPPATH = --dep-path .
|
||||
MMCSDDEPPATH = --dep-path mmcsd
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh "$(CC)" $(TOPDIR)/drivers/mmcsd}
|
||||
|
||||
ASRCS = $(NET_ASRCS) $(USBDEV_ASRCS) $(MMCSD_ASRCS)
|
||||
ifneq ($(CONFIG_NFILE_DESCRIPTORS),0)
|
||||
ifneq ($(CONFIG_DISABLE_MOUNTPOINT),y)
|
||||
include bch/Make.defs
|
||||
ROOTDEPPATH = --dep-path .
|
||||
BCHDEPPATH = --dep-path bch
|
||||
CFLAGS += ${shell $(TOPDIR)/tools/incdir.sh "$(CC)" $(TOPDIR)/drivers/bch}
|
||||
endif
|
||||
endif
|
||||
|
||||
ASRCS = $(NET_ASRCS) $(USBDEV_ASRCS) $(MMCSD_ASRCS) $(BCH_ASRCS)
|
||||
AOBJS = $(ASRCS:.S=$(OBJEXT))
|
||||
|
||||
CSRCS =
|
||||
@ -64,7 +73,7 @@ ifneq ($(CONFIG_DISABLE_MOUNTPOINT),y)
|
||||
CSRCS += ramdisk.c
|
||||
endif
|
||||
endif
|
||||
CSRCS += $(NET_CSRCS) $(USBDEV_CSRCS) $(MMCSD_CSRCS)
|
||||
CSRCS += $(NET_CSRCS) $(USBDEV_CSRCS) $(MMCSD_CSRCS) $(BCH_CSRCS)
|
||||
COBJS = $(CSRCS:.c=$(OBJEXT))
|
||||
|
||||
SRCS = $(ASRCS) $(CSRCS)
|
||||
@ -72,7 +81,7 @@ OBJS = $(AOBJS) $(COBJS)
|
||||
|
||||
BIN = libdrivers$(LIBEXT)
|
||||
|
||||
VPATH = net:usbdev:mmcsd
|
||||
VPATH = net:usbdev:mmcsd:bch
|
||||
|
||||
all: $(BIN)
|
||||
|
||||
@ -88,7 +97,7 @@ $(BIN): $(OBJS)
|
||||
done ; )
|
||||
|
||||
.depend: Makefile $(SRCS)
|
||||
@$(MKDEP) $(ROOTDEPPATH) $(NETDEPPATH) $(USBDEVDEPPATH) $(MMCSDDEPPATH) \
|
||||
@$(MKDEP) $(ROOTDEPPATH) $(NETDEPPATH) $(USBDEVDEPPATH) $(MMCSDDEPPATH) $(BCHDEPPATH) \
|
||||
$(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
|
||||
@touch $@
|
||||
|
||||
|
||||
@ -370,8 +370,28 @@ EXTERN int lib_flushall(FAR struct streamlist *list);
|
||||
* subdirectory
|
||||
*/
|
||||
|
||||
/* Register /dev/null */
|
||||
|
||||
EXTERN void devnull_register(void);
|
||||
EXTERN int losetup(const char *name, int minor, uint16 sectsize);
|
||||
|
||||
/* Setup the loop device so that it exports the file referenced by 'filename'
|
||||
* as a block device.
|
||||
*/
|
||||
|
||||
EXTERN int losetup(const char *devname, const char *filename, uint16 sectsize,
|
||||
off_t offset, boolean readonly);
|
||||
EXTERN int loteardown(const char *devname);
|
||||
|
||||
/* Setup so that the block driver referenced by 'blkdev' can be accessed
|
||||
* similar to a character device.
|
||||
*/
|
||||
|
||||
EXTERN int bchdev_register(const char *blkdev, const char *chardev, boolean readonly);
|
||||
EXTERN int bchdev_unregister(const char *chardev);
|
||||
EXTERN int bchlib_setup(const char *blkdev, boolean readonly, FAR void **handle);
|
||||
EXTERN int bchlib_teardown(FAR void *handle);
|
||||
EXTERN ssize_t bchlib_read(FAR void *handle, FAR char *buffer, size_t offset, size_t len);
|
||||
EXTERN ssize_t bchlib_write(FAR void *handle, FAR const char *buffer, size_t offset, size_t len);
|
||||
|
||||
#undef EXTERN
|
||||
#if defined(__cplusplus)
|
||||
|
||||
@ -53,8 +53,9 @@
|
||||
*/
|
||||
|
||||
#define _FIOCBASE (0x8700) /* File system ioctl commands */
|
||||
#define _BIOCBASE (0x8800) /* Block driver ioctl commands */
|
||||
#define _SIOCBASE (0x8900) /* Socket ioctl commandss */
|
||||
#define _DIOCBASE (0x8800) /* Character driver ioctl commands */
|
||||
#define _BIOCBASE (0x8900) /* Block driver ioctl commands */
|
||||
#define _SIOCBASE (0x8a00) /* Socket ioctl commandss */
|
||||
|
||||
/* Macros used to manage ioctl commands */
|
||||
|
||||
@ -69,10 +70,25 @@
|
||||
#define _FIOCVALID(c) (_IOC_TYPE(c)==_FIOCBASE)
|
||||
#define _FIOC(nr) _IOC(_FIOCBASE,nr)
|
||||
|
||||
#define FIOC_MMAP _FIOC(0x0001) /* IN: None
|
||||
#define FIOC_MMAP _FIOC(0x0001) /* IN: Location to return address (void **)
|
||||
* OUT: If media is directly acccesible,
|
||||
* return (void*) base address
|
||||
* of file */
|
||||
* of file
|
||||
*/
|
||||
/* NuttX file system ioctl definitions */
|
||||
|
||||
#define _DIOCVALID(c) (_IOC_TYPE(c)==_DIOCBASE)
|
||||
#define _DIOC(nr) _IOC(_DIOCBASE,nr)
|
||||
|
||||
#define DIOC_GETPRIV _DIOC(0x0001) /* IN: Location to return handle (void **)
|
||||
* OUT: Reference to internal data
|
||||
* structure. May have a reference
|
||||
* incremented.
|
||||
*/
|
||||
#define DIOC_RELPRIV _DIOC(0x0003) /* IN: None
|
||||
* OUT: None, reference obtained by
|
||||
* FIOC_GETPRIV released.
|
||||
*/
|
||||
|
||||
/* NuttX block driver ioctl definitions */
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user