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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 16:25:16 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 16:25:16 (GMT) |
commit | be90a49ca22a95f184d9f32d35b5247b44032849 (patch) | |
tree | d3c2edc18c003c384366f57901616ac29c80bc27 /Documentation | |
parent | 1f0918d03ff4b5c94540c71ce889672abdbc2f4a (diff) | |
parent | a87371b477774b290c27bc5cb7f4ccc5379574a9 (diff) | |
download | linux-fsl-qoriq-be90a49ca22a95f184d9f32d35b5247b44032849.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (142 commits)
USB: Fix sysfs paths in documentation
USB: skeleton: fix coding style issues.
USB: O_NONBLOCK in read path of skeleton
USB: make usb-skeleton honor O_NONBLOCK in write path
USB: skel_read really sucks royally
USB: Add hub descriptor update hook for xHCI
USB: xhci: Support USB hubs.
USB: xhci: Set multi-TT field for LS/FS devices under hubs.
USB: xhci: Set route string for all devices.
USB: xhci: Fix command wait list handling.
USB: xhci: Change how xHCI commands are handled.
USB: xhci: Refactor input device context setup.
USB: xhci: Endpoint representation refactoring.
USB: gadget: ether needs to select CRC32
USB: fix USBTMC get_capabilities success handling
USB: fix missing error check in probing
USB: usbfs: add USBDEVFS_URB_BULK_CONTINUATION flag
USB: support for autosuspend in sierra while online
USB: ehci-dbgp,ehci: Allow dbpg to work with suspend/resume
USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/kernel-parameters.txt | 2 | ||||
-rw-r--r-- | Documentation/usb/authorization.txt | 10 | ||||
-rw-r--r-- | Documentation/usb/usbmon.txt | 8 | ||||
-rw-r--r-- | Documentation/x86/earlyprintk.txt | 39 |
4 files changed, 47 insertions, 12 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index c363840..6fa7292 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -671,7 +671,7 @@ and is between 256 and 4096 characters. It is defined in the file earlyprintk= [X86,SH,BLACKFIN] earlyprintk=vga earlyprintk=serial[,ttySn[,baudrate]] - earlyprintk=dbgp + earlyprintk=dbgp[debugController#] Append ",keep" to not disable it when the real console takes over. diff --git a/Documentation/usb/authorization.txt b/Documentation/usb/authorization.txt index 381b22e..c069b68 100644 --- a/Documentation/usb/authorization.txt +++ b/Documentation/usb/authorization.txt @@ -16,20 +16,20 @@ Usage: Authorize a device to connect: -$ echo 1 > /sys/usb/devices/DEVICE/authorized +$ echo 1 > /sys/bus/usb/devices/DEVICE/authorized Deauthorize a device: -$ echo 0 > /sys/usb/devices/DEVICE/authorized +$ echo 0 > /sys/bus/usb/devices/DEVICE/authorized Set new devices connected to hostX to be deauthorized by default (ie: lock down): -$ echo 0 > /sys/bus/devices/usbX/authorized_default +$ echo 0 > /sys/bus/usb/devices/usbX/authorized_default Remove the lock down: -$ echo 1 > /sys/bus/devices/usbX/authorized_default +$ echo 1 > /sys/bus/usb/devices/usbX/authorized_default By default, Wired USB devices are authorized by default to connect. Wireless USB hosts deauthorize by default all new connected @@ -47,7 +47,7 @@ USB port): boot up rc.local -> - for host in /sys/bus/devices/usb* + for host in /sys/bus/usb/devices/usb* do echo 0 > $host/authorized_default done diff --git a/Documentation/usb/usbmon.txt b/Documentation/usb/usbmon.txt index 6c3c625..66f92d1 100644 --- a/Documentation/usb/usbmon.txt +++ b/Documentation/usb/usbmon.txt @@ -33,7 +33,7 @@ if usbmon is built into the kernel. Verify that bus sockets are present. -# ls /sys/kernel/debug/usbmon +# ls /sys/kernel/debug/usb/usbmon 0s 0u 1s 1t 1u 2s 2t 2u 3s 3t 3u 4s 4t 4u # @@ -58,11 +58,11 @@ Bus=03 means it's bus 3. 3. Start 'cat' -# cat /sys/kernel/debug/usbmon/3u > /tmp/1.mon.out +# cat /sys/kernel/debug/usb/usbmon/3u > /tmp/1.mon.out to listen on a single bus, otherwise, to listen on all buses, type: -# cat /sys/kernel/debug/usbmon/0u > /tmp/1.mon.out +# cat /sys/kernel/debug/usb/usbmon/0u > /tmp/1.mon.out This process will be reading until killed. Naturally, the output can be redirected to a desirable location. This is preferred, because it is going @@ -305,7 +305,7 @@ Before the call, hdr, data, and alloc should be filled. Upon return, the area pointed by hdr contains the next event structure, and the data buffer contains the data, if any. The event is removed from the kernel buffer. -The MON_IOCX_GET copies 48 bytes, MON_IOCX_GETX copies 64 bytes. +The MON_IOCX_GET copies 48 bytes to hdr area, MON_IOCX_GETX copies 64 bytes. MON_IOCX_MFETCH, defined as _IOWR(MON_IOC_MAGIC, 7, struct mon_mfetch_arg) diff --git a/Documentation/x86/earlyprintk.txt b/Documentation/x86/earlyprintk.txt index 607b1a0..f19802c 100644 --- a/Documentation/x86/earlyprintk.txt +++ b/Documentation/x86/earlyprintk.txt @@ -7,7 +7,7 @@ and two USB cables, connected like this: [host/target] <-------> [USB debug key] <-------> [client/console] -1. There are three specific hardware requirements: +1. There are a number of specific hardware requirements: a.) Host/target system needs to have USB debug port capability. @@ -42,7 +42,35 @@ and two USB cables, connected like this: This is a small blue plastic connector with two USB connections, it draws power from its USB connections. - c.) Thirdly, you need a second client/console system with a regular USB port. + c.) You need a second client/console system with a high speed USB 2.0 + port. + + d.) The Netchip device must be plugged directly into the physical + debug port on the "host/target" system. You cannot use a USB hub in + between the physical debug port and the "host/target" system. + + The EHCI debug controller is bound to a specific physical USB + port and the Netchip device will only work as an early printk + device in this port. The EHCI host controllers are electrically + wired such that the EHCI debug controller is hooked up to the + first physical and there is no way to change this via software. + You can find the physical port through experimentation by trying + each physical port on the system and rebooting. Or you can try + and use lsusb or look at the kernel info messages emitted by the + usb stack when you plug a usb device into various ports on the + "host/target" system. + + Some hardware vendors do not expose the usb debug port with a + physical connector and if you find such a device send a complaint + to the hardware vendor, because there is no reason not to wire + this port into one of the physically accessible ports. + + e.) It is also important to note, that many versions of the Netchip + device require the "client/console" system to be plugged into the + right and side of the device (with the product logo facing up and + readable left to right). The reason being is that the 5 volt + power supply is taken from only one side of the device and it + must be the side that does not get rebooted. 2. Software requirements: @@ -56,6 +84,13 @@ and two USB cables, connected like this: (If you are using Grub, append it to the 'kernel' line in /etc/grub.conf) + On systems with more than one EHCI debug controller you must + specify the correct EHCI debug controller number. The ordering + comes from the PCI bus enumeration of the EHCI controllers. The + default with no number argument is "0" the first EHCI debug + controller. To use the second EHCI debug controller, you would + use the command line: "earlyprintk=dbgp1" + NOTE: normally earlyprintk console gets turned off once the regular console is alive - use "earlyprintk=dbgp,keep" to keep this channel open beyond early bootup. This can be useful for |