Re: [Qemu-devel] [PATCH v5 6/7] libqos: Added MSI-X support

["Marc Marí" <marc.mari.barcelo@gmail.com>]

>El Mon, 18 Aug 2014 14:46:11 +0200
>Marc Marí <marc.mari.barcelo@gmail.com> escribió:
> +void qpci_msix_enable(QPCIDevice *dev)
> +{
> +    uint8_t addr;
> +    uint16_t val;
> +    uint32_t table;
> +    uint8_t bir_table;
> +    uint8_t bir_pba;
> +    void *offset;
> +
> +    addr = qpci_find_capability(dev, PCI_CAP_ID_MSIX);
> +    g_assert_cmphex(addr, !=, 0);
> +
> +    val = qpci_config_readw(dev, addr + PCI_MSIX_FLAGS);
> +    qpci_config_writew(dev, addr + PCI_MSIX_FLAGS, val |
> PCI_MSIX_FLAGS_ENABLE); +
> +    table = qpci_config_readl(dev, addr + PCI_MSIX_TABLE);
> +    bir_table = table & PCI_MSIX_FLAGS_BIRMASK;
> +    offset = qpci_iomap(dev, bir_table);
> +    dev->msix_table = offset + (table & ~PCI_MSIX_FLAGS_BIRMASK);
> +
> +    table = qpci_config_readl(dev, addr+PCI_MSIX_PBA);
> +    bir_pba = table & PCI_MSIX_FLAGS_BIRMASK;
> +    if (bir_pba != bir_table) {
> +        offset = qpci_iomap(dev, bir_pba);

qpci_iomap changed its prototype in one of the lastest pull requests.
Both qpci_iomap should have a NULL as third parameter. Will change in
next version.

Marc