changelog

开放源码实时操作系统源码.

2006-09-21  Jonathan Larmour  <[e-mail]>

	* include/disk.h (DISK_CHANNEL): No need for extra _part_dev
	slot intended for entire disk's own devtab.

	* src/disk.c (disk_lookup): Just access pdevs_dev directly
	with no adjusted offset.
	(disk_init): No longer set entry 0 from device devtab.
	It's unnecessary.

2006-09-20  Jonathan Larmour  <[e-mail]>

	* include/disk.h: Merge eCosCentric CVS with public eCos CVS.
	This merges (and therefore changes) the API. ChangeLog
	entries have been incorporated in the correct places below.
	* include/diskio.h: Also merged.
	* cdl/io_disk.cdl: Also merged.
	* src/disk.c: Also merged.

2006-08-18  Andy Jackson  <[e-mail]>

	* cdl/io_disk.cdl: Made debugging CDL controlled. 
	* src/disk.c: Added support to allow non-CHS disk devices to 
	use LBA information in MBR.

2006-02-03  Nick Garnett  <[e-mail]>

	* src/disk.c (read_partition): Switched to favour LBA partition
	information in partition tables. This also means we don't now rely
	on the driver reporting a correct CHS size for the disk.
	(disk_bread, disk_bwrite): API changed to take length in sectors
	rather than bytes. Also call hardware driver to transfer in
	(up to) max_transfer sized chunks, rather than a sector at a
	time. Call in to driver now made with DSR lock claimed, to avoid a
	race condition between the DSR and the calling thread.
	(disk_get_config): Added phys_block_size to channel info.

	* include/diskio.h (struct cyg_disk_identify_t): Added
	phys_block_size and max_transfer fields. These must be filled in
	by the driver.

2005-12-12  Jonathan Larmour  <[e-mail]>

	* include/disk.h (DISK_CHANNEL_INIT): New macro. Allows a
	DISK_CHANNEL to be defined dynamically.

2005-12-02  Andrew Lunn  <[e-mail]>

	* src/disk.c: Add comments that bread/bwrite take the position and
	len in terms of blocks, not bytes.

2005-10-11  Nick Garnett  <[e-mail]>

	* src/disk.c (disk_bread, disk_bwrite): Made calls to
	cyg_thread_yield() dependent on presence ok kernel.

2005-06-01  Jonathan Larmour  <[e-mail]>

	* src/disk.c (disk_bwrite): Uncomment the cyg_thread_yield() at
	the end to prevent thread starvation between threads at the same
	priority.
	(disk_bread): Ditto.

2004-07-21  Nick Garnett  <[e-mail]>

	* src/disk.c (read_partition): Changed to account for very large
	disks which report bogus CHS geometry. We can only use the LBA
	partition parameters in such disks.
	(disk_set_config): Added some extra debug output.

2004-07-01  Savin Zlobec  <[e-mail]> 

 	* src/disk.c:
 	* include/disk.h:
 	* include/diskio.h:
 	Use predefined arrays for partition devices and info 
 	radher than malloc. Extended DISK_CHANNEL macro to
  	support defining maximum number of partitions.

2004-04-15  Nick Garnett  <[e-mail]>

	* src/disk.c: 
	Various changes to support disconnect/reconnect of changeable
	media.

	* include/diskio.h: Added mount counter to disk_info structure.

	* include/disk.h: Changed disk_disconnected() function to take a
	pointer to a struct disk_channel rather than a struct
	cyg_devtab_entry. Added mount count to disk_channel structure.
	Moved include of diskio.h to end to fix declaration problems.

2004-02-04  Nick Garnett  <[e-mail]>

	* src/disk.c: Fixed bug in write routine where controller result
	field was not being initialized. Added signals on controller queue
	condition variable after setting controller busy flag to false.

	* include/disk.h: Made controller result and busy fields
	volatile. Just in case.

2004-01-23  Nick Garnett  <[e-mail]>

	* include/disk.h: 
	* src/disk.c:
	Many changes. Added additional disk_controller data structure to
	better reflect hardware structure. Added support for serialization
	of multithreaded accesses to a single controller. Added support
	for asynchronous, interrupt driven, IO operations. Various
	tidies.

2004-01-15  Nick Garnett  <[e-mail]>

	* src/disk.c:
	* include/disk.h: Removed block_pos arguments from
	hardware driver read and write calls: it is not necessary.

	* src/disk.c (read_mbr): Modified to read a complete sector from
	the disk rather than pieces. Drivers should only ever see
	reads/writes in multiples of 512 bytes.

2003-10-16 Savin Zlobec <[e-mail]>

	* src/disk.c:
        Check return code from MBR scan and set
        connected flag only if there was no error.

2003-09-01 Savin Zlobec <[e-mail]>

        * cdl/io_disk.cdl:
        * inc/disk.h:
        * inc/diskio.h:
        * src/disk.c:
        A block device IO implementation



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