u-boot.git/common/usb_storage.c, branch v2012.10

usb: Optimize USB storage read/write

2012-09-01T14:21:52+00:00

Trim down the IO times by removing uneeded
test unit reeady calls.

Signed-off-by: Jim Shimer

usb_stor_BBB_transport: Do not delay when not required

2012-09-01T14:21:52+00:00

There is a 5-ms delay in usb_stor_BBB_transport, which occurs every 10 kiB of
data for fragmented fatload usb, i.e. roughly 500 ms of delay per MiB. This adds
up to quite a bit of delay if you're loading a large ramdisk.

The purpose of this delay should be to debounce the 5-V/100-mA USB power up.
This patch skips the delay if the device has already been queried as ready.

Signed-off-by: Jim Shimer 

Rework following the review:
 - Rebase against the latest u-boot-usb master.
 - Replace typedef with #define.
 - Use the existing flags struct field instead of adding a new field.
 - Remove the setter function.
 - Remove the typecasts.
Signed-off-by: Benoît Thébaudeau 

Cc: Marek Vasut 
Cc: Ilya Yanok 
Cc: Stefan Herbrechtsmeier 
Cc: Jim Shimer

usb_storage: Remove EHCI constraints

2012-09-01T14:21:52+00:00

Now that the EHCI driver allocates its qTDs from the heap, the MSC driver is
only limited by the SCSI commands it uses.

Signed-off-by: Benoît Thébaudeau 
Cc: Marek Vasut 
Cc: Ilya Yanok 
Cc: Stefan Herbrechtsmeier

usb_storage: Restore non-EHCI support

2012-09-01T14:21:52+00:00

The commit 5dd95cf made the MSC driver EHCI-specific. This patch restores a
basic support of non-EHCI HCDs, like before that commit.

The fallback transfer size is certainly not optimal, but at least it should work
like before.

Signed-off-by: Benoît Thébaudeau 
Cc: Marek Vasut 
Cc: Ilya Yanok 
Cc: Stefan Herbrechtsmeier

usb_storage: fix ehci driver max transfer size

2012-07-18T12:46:19+00:00

The commit 5dd95cf93dfffa1d19a1928990852aac9f55b9d9 'usb_storage:
Fix EHCI "out of buffer pointers" with CD-ROM' introduce a bug in
usb_storage as it wrongly assumes that every transfer can use
4096 bytes per qt_buffer. This is wrong if the start address of
the data is not page aligned to 4096 bytes and leads to 'EHCI
timed out on TD' messages because of 'out of buffer pointers'
in ehci_td_buffer function.

The bug appears during load of a fragmented file and
read from or write to an unaligned memory address.

Cc: Marek Vasut 
Signed-off-by: Stefan Herbrechtsmeier

USB: Align buffers at cacheline

2012-05-20T06:32:32+00:00

This avoids cache-alignment warnings shown in console
when a usb command is entered.

Whenever X bytes of unaligned buffer is invalidated, arm core
invalidates X + Y bytes as per the cache line size and throws
these warnings.

Signed-off-by: Puneet Saxena 
Signed-off-by: Marek Vasut

usb: replace wait_ms() with mdelay()

2012-03-18T23:08:16+00:00

Common code has a mdelay() func, so use that instead of the usb-specific
wait_ms() func.  This also fixes the build errors:

ohci-hcd.c: In function 'submit_common_msg':
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1519:9: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1816:10: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1827:10: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1844:10: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1563:11: sorry, unimplemented: called from here
/usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available
ohci-hcd.c:1583:9: sorry, unimplemented: called from here
make[1]: *** [ohci-hcd.o] Error 1

Signed-off-by: Mike Frysinger 
Acked-by: Marek Vasut

usb_storage: Fix EHCI "out of buffer pointers" with CD-ROM

2012-01-05T19:10:38+00:00

When performing large bulk reads from a CD or DVD using the U-Boot
usb_storage driver, it generates requests of up to 20 blocks at a time.

With a standard 512-byte block size, that is 10240 bytes and within the
limit of U-Boot's EHCI driver (maximum 5 pages at 4k per page).

Unfortunately CD-ROM media has a 2048-byte blocksize, resulting in a
maximum transfer size of 40960 bytes, which does not fit.

Since the EHCI specification is impossibly obtuse and far beyond my
comprehension, I chose to dynamically compute the limit based on the
blocksize.

Signed-off-by: Kyle Moffett

GCC4.6: Squash subsequent warnings in usb_storage.c

2011-10-27T21:54:03+00:00

usb_storage.c: In function ‘us_one_transfer’:
usb_storage.c:377:7: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 2 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:389:6: warning: format ‘%d’ expects argument of type ‘int’, but
argument 2 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:394:6: warning: format ‘%d’ expects argument of type ‘int’, but
argument 2 has type ‘long unsigned int’ [-Wformat]
usb_storage.c: In function ‘usb_stor_BBB_reset’:
usb_storage.c:442:2: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:448:2: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:454:2: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c: In function ‘usb_stor_CB_reset’:
usb_storage.c:482:2: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c: In function ‘usb_stor_CB_comdat’:
usb_storage.c:572:3: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:584:4: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c: In function ‘usb_stor_BBB_transport’:
usb_storage.c:782:3: warning: format ‘%d’ expects argument of type ‘int’, but
argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c: In function ‘usb_stor_CB_transport’:
usb_storage.c:807:2: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 3 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:830:3: warning: format ‘%X’ expects argument of type ‘unsigned
int’, but argument 2 has type ‘long unsigned int’ [-Wformat]
usb_storage.c:857:3: warning: format ‘%d’ expects argument of type ‘int’, but
argument 2 has type ‘long unsigned int’ [-Wformat]

Signed-off-by: Marek Vasut 
Cc: Wolfgang Denk 
Cc: Simon Glass 
Cc: Mike Frysinger 
Cc: Remy Bohmer

GCC4.6: Squash warning in usb_storage.c

2011-10-27T21:54:03+00:00

usb_storage.c: In function ‘usb_stor_CB_reset’:
usb_storage.c:466:6: warning: variable ‘result’ set but not used
[-Wunused-but-set-variable]

Signed-off-by: Marek Vasut 
Cc: Wolfgang Denk 
Cc: Simon Glass 
Cc: Mike Frysinger