Re: [microblaze-uclinux] USB & Hotplug

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Raúl Rodríguez Canales wrote:

> Making cat /proc/devices I get this:
>
> Character devices:
>   1 mem
>   2 pty/m%d
>   3 pty/s%d
>   4 ttyS
>   5 console
>  10 misc
>  90 mtd
> 162 raw
> 180 usb
> 254 de3
>
> Block devices:
>   1 ramdisk
>  31 mtdblock
> 254 System ACE

You need to enable the SCSI subsystem, and usb-storage

> So I changed make file adding this line:
>
> DEVICES =+ sda,c,180,0    sda1,c,180,1

These should be block devices ('b'), not char ('c')

> Then: mount -t vfat /dev/sda1 /var/pendrive
> mount: Mounting /dev/sda1 on /var failed: Block device required
>
> If I make: mount -t usbdevfs /proc/bus/usb:
>
> # ls /proc/bus/usb
> 001      002      devices  drivers
> # cat drivers
>          usbdevfs
>          hub
>          usb-storage
> # cat devices
> T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 1
> B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
> D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> P:  Vendor=0000 ProdID=0000 Rev= 0.00
> S:  Product=USB CY7C67200/300 Root Hub
> S:  SerialNumber=1
> C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
> I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
> E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms
> T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=12  MxCh= 1
> B:  Alloc=  0/900 us ( 0%), #Int=  0, #Iso=  0
> D:  Ver= 1.10 Cls=09(hub  ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> P:  Vendor=0000 ProdID=0000 Rev= 0.00
> S:  Product=USB CY7C67200/300 Root Hub
> S:  SerialNumber=0
> C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=  0mA
> I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
> E:  Ad=81(I) Atr=03(Int.) MxPS=   2 Ivl=255ms

> I think I'm very near from my target...but I don't find a solution :-(

Enable SCSI device support - it implements the block device interface 
for usb-storage.  That will get you a bit closer.

I'm not sure why your USB drive is not appearing in the list of 
/proc/bus/usb/devices - but take one thing at a time.

Regards,

John
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