[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: EHCI driver
From: |
Vladimir 'φ-coder/phcoder' Serbinenko |
Subject: |
Re: EHCI driver |
Date: |
Sun, 22 Jul 2012 18:58:24 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120624 Icedove/10.0.5 |
On 18.07.2012 17:32, Aleš Nesrsta wrote:
> Hi Frank,
>
> You are probably right - it might be the problem with PCI bus master
> settings! The same problem was solved in UHCI driver for coreboot by
> Rock some time ago.
>
> Try this patch, please:
>
Feel free to commit this patch (especially given the confirmation that
it works). My response time nowadays is long, feel free to commit USB
patches as you see fit.
> @@ -533,6 +533,11 @@ grub_ehci_pci_iter (grub_pci_device_t de
> "EHCI grub_ehci_pci_iter: registers above 4G are not
> supported\n");
> return 0;
> }
> +
> + /* Set bus master - needed for coreboot or broken BIOSes (and
> VMware?) */
> + addr = grub_pci_make_address (dev, GRUB_PCI_REG_COMMAND);
> + grub_pci_write_word(addr,
> + GRUB_PCI_COMMAND_BUS_MASTER | grub_pci_read_word(addr));
>
> grub_dprintf ("ehci", "EHCI grub_ehci_pci_iter: 32-bit EHCI OK
> \n");
> }
>
> BR,
> Ales
>
>
> yanxiang fang wrote:
>> Hi, Ales.
>>
>> I studied linux ehci driver which can work well in vmware. But found
>> nothing useful, mybe because it is too complex. So I turned to
>> other simpler OS to find some useful thing.
>>
>> I don't know anything about PCI. Do you think this problem having
>> something to do with PCI configuration?
>>
>> BR,
>>
>> frank
>>
>> _______________________________________________
>> Grub-devel mailing list
>> address@hidden
>> https://lists.gnu.org/mailman/listinfo/grub-devel
>
>
>
> _______________________________________________
> Grub-devel mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/grub-devel
> .
>
--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko
signature.asc
Description: OpenPGP digital signature