Messages in this thread | | | Date | Fri, 22 Feb 2002 16:40:15 -0800 | From | Kallol Biswas <> | Subject | Re: eepro100 driver can't read serial eeprom that is beyond a bridge |
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The problem has been fixed changing the access to the eeprom comtrol register from I/O to memory.
The lines that have been changed: do_eeprom_cmd() { change io_outw to outw and out_inw to inw } speedo_found1() {
/* iobase = pci_resource_start(pdev, 1); */ iobase = ioaddr; }
Kallol Biswas wrote:
> Hi, > We have a system running 2.4.17 with the following configuration. > > ------North Bridge---------PCI-PCI-BRIDGE----82559ER > | > 82559ER > # lspci > ...... > 00:12.0 Ethernet controller: Intel Corp. 82559ER (rev 09) > ....... > 00:0f.0 PCI bridge: Digital Equipment Corporation DECchip 21152 (rev 03) > > ......... > 02:01.0 Ethernet controller: Intel Corp. 82559ER (rev 09) > > #insmod eepro100 > > ......... > eth0: Intel Corp. 82559ER, l00:eC0:s85:/30:292:.9F, 4IRQ 12. > ............ > > eth1: OEM i82557/i82558 10/100 Ethernet, FF:FF:FF:FF:FF:FF, IRQ 10. > ........ > > It seems eepro100 driver can't read the eeprom from the 2nd card. I > have > printed the data bits in the > do_eeprom_cmd routine, all were 1. Adjusting the delay did not help. > > The eepro100 driver on 2.2 kernel works fine and even intel's e100 > driver on > 2.4.17 also works fine. > > I guess there may be some timing issues involved. > > Are the devices beyond a bridge imapped to I/O space properly in 2.4 > kernel? Intel's driver reads the EEPROM > control register using memory cycles. > > Kallol > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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