Dear Wolfgang Denk
Dear "Ashok Kumar Kacham",
In message 0969b5bdd1b15922721db142831c3b02.squirrel@mail.bel.co.in you wrote:
Hi all,
we have a pci-to-usb controller(32bit,33MHZ,PCI1 controller, IDSEL 18) on pci bus, we disabled PCI and tried to read the configuration data(vendor and device id) of the usb controller by giving following commands. (0xe0000000 is the CCSR base address)
$mw 0xe0008000 0x80009000
What exactly is this command supposed to do?
it writes the value 0x80009000 to addr e0008000 (we can also give the count, we tried it also) here e0008000 is the CFG_ADDR of PCI1 controller, where we can write the bus number,device number, function number and config reg number of the pci device we want to read. after writing it, we have to read the CFG_DATA (addr 0xe0008004) register of PCI config space, then the PCI controller will try to read that particular reg number from the PCI device.
$md 0xe0008004
Which exact devices / registers are supposed to be mapped at 0xe0008000, 0xe0008004, and 0x80009000 ?
=> mw 0xe0008000 0x80009000 => md 0xe0008004 e0008004: //hangs here
Are you 100% sure that reading a probably large number of 32 words starting at address 0xe0008004 should work? Can you provide the register mapping for this address range?
same thing is working in one of our MPC8540 based board, where we are able to read the vendor id and device id of the pci device properly.
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de A list is only as strong as its weakest link. -- Don Knuth
Email secured by Check Point
Regards,