u-boot.git/drivers/usb/host, branch v2011.03

Fix EHCI usb submit timeout and unify with OHCI

2011-02-19T19:32:34+00:00

Changed both to use a common timeout for URB submission, since they were using
different values and EHCI's was too short.

Also fixed EHCI to actually check if urb submission succeeded, rather than
silently continuing into the weeds.

Change-Id: I7f71499ffaa05187d8e5618db2419e1606007b82

Signed-off-by: Simon Glass

usb: Remove usb_dev_init() from ehci-ppc4xx.c

2010-11-26T20:24:57+00:00

Calling usb_dev_init() from within the EHCI host driver is wrong.
The EHCI host driver should have no dependency/interconnection to the
USB device driver.

Signed-off-by: Stefan Roese 
Cc: Remy Bohmer

usb: Clear CMD_RUN while issuing CMD_RESET in ehci_reset()

2010-11-26T20:23:25+00:00

This patch fixes a problem noticed on lwmon5 (PPC440EPx) using the
common EHCI driver, when "usb reset" is issued multiple times.
Upon the 2nd (and further) "usb reset" command, the command fails
with the following messages:

=> usb reset
(Re)start USB...
USB:   Register 1111 NbrPorts 1
USB EHCI 1.00
scanning bus for devices... 5 USB Device(s) found
       scanning bus for storage devices... 2 Storage Device(s) found
=> usb reset
(Re)start USB...
USB:   EHCI fail to reset
Error, couldn't init Lowlevel part

This patch fixes this problem. Now "usb reset" can be called multiple
times.

Signed-off-by: Stefan Roese 
Cc: Remy Bohmer

usb: Add WATCHDOG_RESET call to polling loop

2010-11-26T20:21:50+00:00

This watchdog reset call is needed here, otherwise the lwmon5 board
(PPC440EPx based) will reset upon the "usb reset" command.

Signed-off-by: Stefan Roese 
Cc: Remy Bohmer

usb: fix for USB_ST_STALLED status reporting in ehci_submit_async()

2010-11-26T20:21:16+00:00

Checking the status field of the qTD token in the current code
do not take into acount cases where endpoint stall (halted) bit
is set together with XactErr status bit. As a result clearing
stall on an endpoint won't be done if this status bit was also
set. Check for halted bit and report USB_ST_STALLED status
if the host controller also indicates endpoit stall condition.

Signed-off-by: Anatolij Gustschin

Switch from archive libraries to partial linking

2010-11-17T20:02:18+00:00

Before this commit, weak symbols were not overridden by non-weak symbols
found in archive libraries when linking with recent versions of
binutils.  As stated in the System V ABI, "the link editor does not
extract archive members to resolve undefined weak symbols".

This commit changes all Makefiles to use partial linking (ld -r) instead
of creating library archives, which forces all symbols to participate in
linking, allowing non-weak symbols to override weak symbols as intended.
This approach is also used by Linux, from which the gmake function
cmd_link_o_target (defined in config.mk and used in all Makefiles) is
inspired.

The name of each former library archive is preserved except for
extensions which change from ".a" to ".o".  This commit updates
references accordingly where needed, in particular in some linker
scripts.

This commit reveals board configurations that exclude some features but
include source files that depend these disabled features in the build,
resulting in undefined symbols.  Known such cases include:
- disabling CMD_NET but not CMD_NFS;
- enabling CONFIG_OF_LIBFDT but not CONFIG_QE.

Signed-off-by: Sebastien Carlier

ehci-hcd.c: fix hanging under higher load

2010-10-22T19:44:37+00:00

This patch solves a problem with USB hanging under higher load on a
i.MX31 board.  It falls into class of typical USB problems and fixes:
if you don't understand the real cause, add a delay somewhere.

The problem appeared after introduction of ELF relocation, which
results in smaller code, which appears to run faster (probably because
it fits better in the cache); turning off the instruction cache,
adding debug printf()s and increasing the delay have all been found to
make the problem go away.

Moving the original "udelay(1)" up in the code to it's new place made
the problem appear much less frequently. Increasing the delay to 2
microseconds then made the code run reliably in all (hour-long) tests.
To be on the safe side, we set it to 5 microseconds here.

Signed-off-by: Heiko schocher 
Signed-off-by: Wolfgang Denk 
Cc: Remy Bohmer 
Cc: Stefano Babic

USB: fix Queue Element Transfer Descriptor changes

2010-10-22T19:41:45+00:00

Commit 3ed1607 "USB: sync Queue Element Transfer Descriptor against
EHCI spec" added an "__attribute__ ((aligned (32)))" to the
declaration of struct qTD, as used for example in the Linux kernel as
well.

However, it turns out that this attribute causes errors in "usb start"
(like "ERROR: NOT USB_CONFIG_DESC 7b" and similar). Drop the attribute
again.

Signed-off-by: Wolfgang Denk 
Cc: Dan Lykowski 
Cc: Remy Bohmer 
Cc: Stefano Babic

ehci-pci: print hccr, hcor and hc_lenght

2010-10-22T19:41:45+00:00

It is useful to know the EHCI-PCI hccr, hcor and hc_lenght to make sure it was
successfully registered, and at the correct location.

Signed-off-by: Florian Fainelli

USB: sync Queue Element Transfer Descriptor against EHCI spec

2010-10-19T22:23:57+00:00

Appendix B "EHCI 64-Bit Data Structures" of the "Enhanced Host
Controller Interface Specification for Universal Serial Bus" (Rev.
1.0, March 12, 2002) defines additional fields which were missing in
U-Boot's struct qTD; as these are also present in recent versions of
struct ehci_qtd in the Linux kernel, we add them here, too.

This fixes some nasty memory corruption problems.

Reported-by: Dan Lykowski 
See http://permalink.gmane.org/gmane.comp.boot-loaders.u-boot/76942

Signed-off-by: Wolfgang Denk 
Cc: Remy Bohmer 
Cc: Dan Lykowski 
Cc: Stefano Babic 
Tested-by: Stefano Babic