[Xen-devel] Re: [Qemu-devel] [PATCH RFC V3 04/12] xen: Add the Xen platform pci device

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

On Fri, Sep 17, 2010 at 12:14:59PM +0100, anthony.perard@xxxxxxxxxx wrote:
> +static int xen_platform_initfn(PCIDevice *dev)
> +{
> +    PCIXenPlatformState *d = DO_UPCAST(PCIXenPlatformState, pci_dev, dev);
> +    uint8_t *pci_conf;
> +
> +    pci_conf = d->pci_dev.config;
> +
> +    pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_XENSOURCE);
> +    pci_config_set_device_id(pci_conf, 0x0001);
> +    pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | 
> PCI_COMMAND_MEMORY);
> +
> +    pci_config_set_revision(pci_conf, 1);
> +    pci_config_set_prog_interface(pci_conf, 0);
> +
> +    pci_config_set_class(pci_conf, PCI_CLASS_OTHERS << 8 | 0x80);
> +
> +    pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL;

Eliminate this line. Don't overwrite multifunction bit.
Please refer to 
498238687fd3a2bf3efb32694732f88ceac72e99
6eab3de16d36c48a983366b09d0a0029a5260bc3



> +    pci_conf[PCI_INTERRUPT_PIN] = 1;
> +
> +    /* Microsoft WHQL requires non-zero subsystem IDs. */
> +    /* http://www.pcisig.com/reflector/msg02205.html.  */
> +    pci_set_word(pci_conf + PCI_SUBSYSTEM_VENDOR_ID, 
> pci_conf[PCI_VENDOR_ID]);
> +    pci_set_word(pci_conf + PCI_SUBSYSTEM_ID, 0x0001);
> +
> +    pci_register_bar(&d->pci_dev, 0, 0x100,
> +            PCI_BASE_ADDRESS_SPACE_IO, platform_ioport_map);
> +
> +    /* reserve 16MB mmio address for share memory*/
> +    pci_register_bar(&d->pci_dev, 1, 0x1000000,
> +            PCI_BASE_ADDRESS_MEM_PREFETCH, platform_mmio_map);
> +
> +    platform_fixed_ioport_init(d);
> +
> +    return 0;
> +}

-- 
yamahata

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