talos-obmc-linux/include/linux/mtd/mtd.h, branch v2.6.26-rc6

[MTD][NOR] Add physical address to point() method

2008-05-01T17:59:11+00:00

Adding the ability to get a physical address from point() in addition to virtual address. This physical address is required for XIP of userspace code from flash. Signed-off-by: Jared Hulbert Reviewed-by: Jörn Engel Acked-by: Nicolas Pitre Acked-by: Greg Ungerer Signed-off-by: David Woodhouse

[MTD] Add mtd panic_write function pointer

2008-02-07T10:30:48+00:00

MTDs are well suited for logging critical data and the mtdoops driver allows kernel panics/oops to be written to flash in a blackbox flight recorder fashion allowing better debugging and analysis of crashes. Any kernel oops in user context can be easily handled since the kernel continues as normal and any queued mtd writes are scheduled. Any kernel oops in interrupt context results in a panic and the delayed writes will not be scheduled however. The existing mtd->write function cannot be called in interrupt context so these messages can never be written to flash. This patch adds a panic_write function pointer that drivers can optionally implement which can be called in interrupt context. It is only intended to be called when its known the kernel is about to panic and we need to write to succeed. Since the kernel is not going to be running for much longer, this function can break locks and delay to ensure the write succeeds (but not sleep). Signed-off-by: Richard Purdie Signed-off-by: David Woodhouse

[MTD] Document erase interface.

2007-09-21T13:48:33+00:00

Document mtd erase interface. Signed-off-by: Jörn Engel Signed-off-by: David Woodhouse

[MTD] Delete allegedly obsolete "bank_size" field of mtd_info.

2007-05-09T12:26:52+00:00

Delete the allegedly obsolete "bank_size" member of struct mtd_info. Signed-off-by: Robert P. J. Day Signed-off-by: David Woodhouse

[MTD] Remove unnecessary user space check from mtd.h.

2007-05-09T12:24:37+00:00

Since the header file include/linux/mtd/mtd.h is not exported to user space, remove the user space check and error. Signed-off-by: Robert P. J. Day Signed-off-by: David Woodhouse

[MTD] [NOR] Support for auto locking flash on power up

2007-04-02T18:12:23+00:00

Auto unlock sectors on resume for auto locking flash on power up. Signed-off-by: Rodolfo Giometti Signed-off-by: Andrew Morton Signed-off-by: David Woodhouse

[MTD] [NAND] make oobavail public

2007-03-08T09:17:43+00:00

During the MTD rework the oobavail parameter of mtd_info structure has become private. This is not quite correct in terms of integrity and logic. If we have means to write to OOB area, then we'd like to know upfront how many bytes out of OOB are spare per page to be able to adapt to specific cases. The patch inlined adds the public oobavail parameter. Signed-off-by: Vitaly Wool Signed-off-by: David Woodhouse

[MTD] Clarify OOB-operation interface comments

2007-02-09T15:27:50+00:00

Add more comment to OOB I/O interface. Read/write are not symmetric which is confusing and should be documented. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

[MTD] remove unused ecctype,eccsize fields from struct mtd_info

2007-02-09T15:27:12+00:00

Remove unused and broken mtd->ecctype and mtd->eccsize fields from struct mtd_info. Do not remove them from userspace API data structures (don't want to breake userspace) but mark them as obsolete by a comment. Any userspace program which uses them should be half-broken anyway, so this is more about saving data structure size. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

[MTD] [NOR] Intel: remove ugly PROGREGION macros

2007-02-09T15:26:37+00:00

Remove ugly and weird MTD_PROGREGION_CTRLMODE_VALID() and MTD_PROGREGION_CTRLMODE_INVALID() macros. There is only one user of them and they are used locally just for printing. Anyway, this patch is a preparation for removing mtd->ecctype and mtd->eccsize, but these macros use them. Fix this. Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse