linux-toradex.git/drivers/char/ps3flash.c, branch tegra-10.7.1 Linux kernel for Apalis and Colibri modules ps3flash: Always read chunks of 256 KiB, and cache them 2009-06-15T06:47:27+00:00 Geert Uytterhoeven Geert.Uytterhoeven@sonycom.com 2009-06-10T04:39:08+00:00 42e27bfc4bfa42bd905e53be93d862b8e3d80a00 Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
ps3flash: Cache the last accessed FLASH chunk 2009-06-15T06:47:27+00:00 Geert Uytterhoeven Geert.Uytterhoeven@sonycom.com 2009-06-10T04:39:07+00:00 6bd57f2e5db408e0dfdb3bf052d58c4e7b18ed3c Add support for caching, to reduce FLASH wear when writing using small blocksizes. As we also don't care anymore about heads and tails in case of partial writes, this greatly simplifies the code for handling writes. Note: We don't bother caching reads smaller than the FLASH chunk size (256 KiB). Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Add support for caching, to reduce FLASH wear when writing using small
blocksizes. As we also don't care anymore about heads and tails in case of
partial writes, this greatly simplifies the code for handling writes.

Note: We don't bother caching reads smaller than the FLASH chunk size
(256 KiB).

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
ps3: Replace direct file operations by callback 2009-06-15T06:47:26+00:00 Geert Uytterhoeven Geert.Uytterhoeven@sonycom.com 2009-06-10T04:39:06+00:00 a4e623fbc9b201930abcf78df6db5e49aa8e00cb Currently the FLASH database is updated by the kernel using file operations, meant for userspace only. While this works for us because copy_{from,to}_user() on powerpc can handle kernel pointers, this is unportable and a bad example. Replace the file operations by callbacks, registered by the ps3flash driver. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Currently the FLASH database is updated by the kernel using file operations,
meant for userspace only. While this works for us because copy_{from,to}_user()
on powerpc can handle kernel pointers, this is unportable and a bad example.
Replace the file operations by callbacks, registered by the ps3flash driver.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
ps3flash: Use ps3_system_bus_[gs]et_drvdata() instead of direct access 2009-06-15T06:47:25+00:00 Geert Uytterhoeven Geert.Uytterhoeven@sonycom.com 2009-06-10T04:38:55+00:00 559dc87f50d062d881fed406efb76925aa1f30e7 Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
powerpc/ps3: Printing fixups for l64 to ll64 conversion drivers/char 2009-01-16T05:15:14+00:00 Stephen Rothwell sfr@canb.auug.org.au 2009-01-13T20:06:02+00:00 4c33d2dc34f50e5d5436e62cd99395859f157a19 Also a couple of min -> min_t changes. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> 
Also a couple of min -> min_t changes.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
ps3: FLASH ROM Storage Driver 2007-07-22T00:49:16+00:00 Geert Uytterhoeven Geert.Uytterhoeven@sonycom.com 2007-07-21T11:37:48+00:00 f96526354bb0824f3ce550a028606d2f94435b92 Add a FLASH ROM Storage Driver for the PS3: - Implemented as a misc character device driver - Uses a fixed 256 KiB buffer allocated from boot memory as the hypervisor requires the writing of aligned 256 KiB blocks Cc: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Add a FLASH ROM Storage Driver for the PS3:
  - Implemented as a misc character device driver
  - Uses a fixed 256 KiB buffer allocated from boot memory as the hypervisor
    requires the writing of aligned 256 KiB blocks

Cc: Geoff Levand <geoffrey.levand@am.sony.com>
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>