[U-Boot] [PATCH V2] usb: ci_udc: Allocate the qTD list directly

["Jörg Krause" <jkrause@posteo.de>]

On 07/02/2014 12:36 AM, Stephen Warren wrote:
> On 07/01/2014 04:34 PM, J?rg Krause wrote:
>> On 07/01/2014 01:22 PM, J?rg Krause wrote:
>>> On 07/01/2014 01:19 PM, Marek Vasut wrote:
>>>> [snip]
>>>>>> Can you edit arch/arm/cpu/arm926ejs/cache.c and change the debug() to
>>>>>> printf() , then re-test please ? I suspect this might trap something
>>>>>> still. Ah, and please test on u-boot-usb/master with this patch.
>>>>> No additional output on the console.
>>>> What does this mean? Do you see warning messages prefixed with
>>>> "CACHE: " ?
>>> No messages prefixed with "CACHE: ". Just the usual error message.
>> I am sorry, but maybe I edited arch/arm/cpu/arm926ejs/ in a another
>> branch and compiled in u-boot-usb. If I run now tftp with printf enabled
>> in arch/arm/cpu/arm926ejs/cache.c I get the following "CACHE: " messages:
>>
>>      CACHE: Misaligned operation at range [40008000, 4000c653]
>>      CACHE: Misaligned operation at range [43fd0b0c, 43fd0b60]
> That happens right when you first use the UDC driver right? If so, I
> hope that "[U-Boot] [PATCH 1/6] usb: ci_udc: fix ci_flush_{qh, qtd}
> calls in ci_udc_probe()" will fix that.

Checkout clean u-boot-usb/master, applied board specific patches and 
applied the mentioned patch. Running tftp three times in a row:

    => reset
    resetting ...
    HTLLCLLC

    U-Boot 2014.07-rc3-g0b32423-dirty (Jul 02 2014 - 00:44:53)

    CPU:   Freescale i.MX28 rev1.2 at 454 MHz
    BOOT:  NAND, 3V3
    DRAM:  64 MiB
    NAND:  128 MiB
    In:    serial
    Out:   serial
    Err:   serial
    Net:   usb_ether [PRIME]
    Hit any key to stop autoboot:  0
    => tftp imx28-airlino.dtb
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    USB network up!
    Using usb_ether device
    TFTP from server 10.0.0.1; our IP address is 10.0.0.2
    Filename 'imx28-airlino.dtb'.
    Load address: 0x40008000
    Loading: ##
          4.3 MiB/s
    done
    Bytes transferred = 18003 (4653 hex)
    CACHE: Misaligned operation at range [40008000, 4000c653]
    =>
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    USB network up!
    Using usb_ether device
    TFTP from server 10.0.0.1; our IP address is 10.0.0.2
    Filename 'imx28-airlino.dtb'.
    Load address: 0x40008000
    Loading: ##
          1.7 MiB/s
    done
    Bytes transferred = 18003 (4653 hex)
    CACHE: Misaligned operation at range [40008000, 4000c653]
    =>
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    USB network up!
    Using usb_ether device
    TFTP from server 10.0.0.1; our IP address is 10.0.0.2
    Filename 'imx28-airlino.dtb'.
    Load address: 0x40008000
    Loading: ##
          3.4 MiB/s
    done
    Bytes transferred = 18003 (4653 hex)
    CACHE: Misaligned operation at range [40008000, 4000c653]
    =>
    using ci_udc, OUT ep- IN ep- STATUS ep-
    MAC 00:19:b8:00:00:02
    HOST MAC 00:19:b8:00:00:01
    high speed config #1: 2 mA, Ethernet Gadget, using CDC Ethernet
    ERROR: The remote end did not respond in time.
    at drivers/usb/gadget/ether.c:2388/usb_eth_init()