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Re: [microblaze-uclinux] USB & Hotplug

To: microblaze-uclinux@xxxxxxxxxxxxxx
Subject: Re: [microblaze-uclinux] USB & Hotplug
From: Leonardo Pereira Santos <lsantos@xxxxxxxxxx>
Date: Thu, 26 Apr 2007 15:13:03 -0300
In-reply-to: <1a1bcc500704260824o42e9788ey862b2e82bd827e8e@xxxxxxxxxxxxxx>
Organization: PD3 Tecnologia
References: <1a1bcc500704250820o7457fd87i7afa65f37fa2abee@xxxxxxxxxxxxxx> <200704251613.38385.lsantos@xxxxxxxxxx> <1a1bcc500704260824o42e9788ey862b2e82bd827e8e@xxxxxxxxxxxxxx>
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Hi Everybody!
	That's good to hear Raúl! In my last message I intended to be more verbose, 
but ended up deleting part of the message. When I read it, it was very 
odd ;-) and kind of rude, sorry about that.
	Well, I confess I never worked with USB besides plugging pendrives on my 
workstation ;-), but I think lsusb can be your friend now. By your console 
output I guess it detected just the hub and not the device you plugged. One 
good indication that things are kind of working is to enable the kernel and 
system log and see if you get any events when you plug/unplug your device.
	And about /dev/sda1, I think it depends on whether you configured devfs or 
not. You can try to manually create the sda1 entry using mknod and see if it 
works, but first I'd check the logs and see if the device was at least 
detected. Cheers!

P.S. On a personal note, I'd try to mount the root filesystem on NFS, as 
having to write to flash everytime you try something new is VERY boring. And 
try to compile the whole USB part as a module, again, it's easier than have 
to recompile the whole kernel often.

On Thursday 26 April 2007 12:24, Raúl Rodríguez Canales wrote:
> Hi all,
>
> Thank you very much for your help Leonardo.
>
> Now I have some cuestions:
>
> This is my uClinux logging:
>
> Linux version 2.4.32-uc0 (mira@toledo) (gcc version 3.4.1 ( Xilinx EDK
> 8.1.01 Bu
> ild EDK_I.19.4 060306 )) #20 Thu Apr 26 18:47:50 CEST 2007
> On node 0 totalpages: 16384
> zone(0): 16384 pages.
> zone(1): 0 pages.
> zone(2): 0 pages.
> CPU: MICROBLAZE
> Kernel command line: console=ttyS0
> Console: xmbserial on UARTLite
> Calibrating delay loop... 49.25 BogoMIPS
> Memory: 64MB = 64MB total
> Memory: 62936KB available (1160K code, 724K data, 48K init)
> Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
> Inode cache hash table entries: 4096 (order: 3, 32768 bytes)
> Mount cache hash table entries: 512 (order: 0, 4096 bytes)
> Buffer cache hash table entries: 4096 (order: 2, 16384 bytes)
> Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
> POSIX conformance testing by UNIFIX
> Linux NET4.0 for Linux 2.4
> Based upon Swansea University Computer Society NET3.039
> Microblaze UARTlite serial driver version 1.00
> ttyS0 at 0x40600000 (irq = 4) is a Microblaze UARTlite
> ttyS1 at 0x41400000 (irq = 1) is a Microblaze UARTlite
> Starting kswapd
> RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
> Initializing SystemAce driver
> Partition check:
>  xsysacea: xsysacea1
> System ACE at 0x41800000 mapped to 0x41800000, irq=3, 31360KB
> SCSI subsystem driver Revision: 1.00
> uclinux[mtd]: RAM probe address=0x24159b5c size=0x7e000
> uclinux[mtd]: root filesystem index=0
> usb.c: registered new driver usbdevfs
> usb.c: registered new driver hub
> Initializing USB Mass Storage driver...
> usb.c: registered new driver usb-storage
> USB Mass Storage support registered.
> cy7c67200_300_hcd.c:1744: Configuring for Xilinx ML40x
> usb.c: new USB bus registered, assigned bus number 1
> usb.c: kmalloc IF 2428d6dc, numif 1
> usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1
> usb.c: USB device number 1 default language ID 0x0
> Product: USB CY7C67200/300 Root Hub
> SerialNumber: 0
> hub.c: USB hub found
> hub.c: 1 port detected
> hub.c: standalone hub
> hub.c: ganged power switching
> hub.c: global over-current protection
> hub.c: Port indicators are not supported
> hub.c: power on to power good time: 100ms
> hub.c: hub controller current requirement: 0mA
> hub.c: port removable status: R
> hub.c: local power source is good
> hub.c: no over-current condition exists
> hub.c: enabling power on all ports
> usb.c: hub driver claimed interface 2428d6dc
> usb.c: kusbd: /sbin/hotplug add 1
> usb.c: kusbd policy returned 0xfffffffe
> usb.c: new USB bus registered, assigned bus number 2
> usb.c: kmalloc IF 2428d7dc, numif 1
> usb.c: new device strings: Mfr=0, Product=2, SerialNumber=1
> usb.c: USB device number 1 default language ID 0x0
> Product: USB CY7C67200/300 Root Hub
> SerialNumber: 1
> hub.c: USB hub found
> hub.c: 1 port detected
> hub.c: standalone hub
> hub.c: ganged power switching
> hub.c: global over-current protection
> hub.c: Port indicators are not supported
> hub.c: power on to power good time: 100ms
> hub.c: hub controller current requirement: 0mA
> hub.c: port removable status: R
> hub.c: local power source is good
> hub.c: no over-current condition exists
> hub.c: enabling power on all ports
> usb.c: hub driver claimed interface 2428d7dc
> usb.c: kusbd: /sbin/hotplug add 1
> usb.c: kusbd policy returned 0xfffffffe
> FAT: bogus logical sector size 27888
> FAT: bogus logical sector size 27888
> VFS: Mounted root (romfs filesystem) readonly.
> Freeing init memory: 48K
> Mounting proc:
> Mounting var:
> Populating /var:
> Mounting CF
> Running local start scripts.
>
> And my cuestions...
>
> The OS founds two USB ports, but I don't know if they are the USB
> peripherals or if one of them is the USB host. Do I need to select the
> option of Host USB in kernel configuration? In this case I have to add a
> PCI controller to the MicroBlaze, isn't true?
>
> These ports are added to the hotplug, but I can't find hotplug in /sbin.
> Where is it?
>
> In /dev doesn't appear /sda1 and I'd like to do mount -t vfat /dev/sda1 for
> my USB mass storage. How can I include the /dev/sda1 for manual mounting?
>
> Sorry if there are too many questions!
>
> Thank you very much.
>
> Kind regards
>
> 2007/4/25, Leonardo Pereira Santos:
> > Hi All:
> >         To enable the SCSI support, you need first to enable "Disk
> > hardware support".
> > Go to "General setup" and enable "Disk hardware support".
> >
> > Cheers!
> >
> > On Wednesday 25 April 2007 12:20, Raúl Rodríguez Canales wrote:
> > > Hello everyone,
> > >
> > > I'm working in a proyect with a ML402 with microblaze & uclinux and I
> >
> > need
> >
> > > to connect a USB mass storage device.
> > >
> > > I've got a uclinux loggin in which the CYPRESS USB chip was detected,
> >
> > but
> >
> > > if I try to compile a new kernel enabling the HOTPLUG and the USB MASS
> > > STORAGE i have the following error:
> > >
> > > drivers/usb/usbdrv.o: In function `detect':
> > > /home/mira/proyecto2/uclinux/uClinux-2.4.x
> >
> > /drivers/usb/storage/scsiglue.c(.
> >
> > >text+0x8664): undefinedreference to `scsi_register'
> > > drivers/usb/usbdrv.o: In function `storage_probe':
> > > /home/mira/proyecto2/uclinux/uClinux-2.4.x
> >
> > /drivers/usb/storage/usb.c(.text+
> >
> > >0xe2c4): undefined reference to `scsi_register_module'
> > > drivers/usb/usbdrv.o: In function `usbd_hotplug':
> > > /home/mira/proyecto2/uclinux/uClinux-2.4.x
> >
> > /drivers/usb/cy7c67300/usbd/usbd.
> >
> > >c(.text+0x1c268): undefined reference to `hotplug'
> > > drivers/usb/usbdrv.o: In function `usb_stor_exit':
> > > /home/mira/proyecto2/uclinux/uClinux-2.4.x
> >
> > /drivers/usb/storage/usb.c(.text.
> >
> > >exit+0x60): undefined reference to `scsi_unregister_module'
> > > make[1]: *** [linux] Error 1
> > >
> > > I think this error is because I've not enabled the SCSI driver, but the
> > > problem is that I can't find this option in menuconfig... Does anyone
> >
> > know
> >
> > > how to enable the SCSI in uClinux-2.4.x? Or is there anther form to do
> > > this?
> > >
> > > I'll appreciate any help!
> > >
> > > Thank you very much.
> > >
> > > Kind regards.
> >
> > --
> > This is Linux country.
> > On a quiet night, you can hear Windows reboot.
> >
> > Leonardo Pereira Santos     |_|0|_|
> > Engenheiro de Projetos      |_|_|0|
> > PD3 Tecnologia              |0|0|0|
> > av. Para 330/202
> > (51) 3337 1237
> >
> > Today Fortune tells us:
> >
> >
> > Reading is thinking with someone else's head instead of one's own.
> >
> > ___________________________
> > microblaze-uclinux mailing list
> > microblaze-uclinux@xxxxxxxxxxxxxx
> > Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
> > Mailing List Archive :
> > http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/

-- 
This is Linux country.
On a quiet night, you can hear Windows reboot.

Leonardo Pereira Santos     |_|0|_|
Engenheiro de Projetos      |_|_|0|
PD3 Tecnologia              |0|0|0|
av. Para 330/202
(51) 3337 1237

Today Fortune tells us:


So little time, so little to do.
		-- Oscar Levant

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References:
- [microblaze-uclinux] USB & Hotplug
  - From: Raúl Rodríguez Canales
- Re: [microblaze-uclinux] USB & Hotplug
  - From: Leonardo Pereira Santos
- Re: [microblaze-uclinux] USB & Hotplug
  - From: Raúl Rodríguez Canales

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