C++ (Cpp) pci_msi_conf_write_interceptの例

コード例 #1

ファイル: pci.c プロジェクト: 0day-ci/xen

int pci_conf_write_intercept(unsigned int seg, unsigned int bdf,
                             unsigned int reg, unsigned int size,
                             uint32_t *data)
{
    struct pci_dev *pdev;
    int rc = xsm_pci_config_permission(XSM_HOOK, current->domain, bdf,
                                       reg, reg + size - 1, 1);

    if ( rc < 0 )
        return rc;
    ASSERT(!rc);

    /*
     * Avoid expensive operations when no hook is going to do anything
     * for the access anyway.
     */
    if ( reg < 64 || reg >= 256 )
        return 0;

    pcidevs_lock();

    pdev = pci_get_pdev(seg, PCI_BUS(bdf), PCI_DEVFN2(bdf));
    if ( pdev )
        rc = pci_msi_conf_write_intercept(pdev, reg, size, data);

    pcidevs_unlock();

    return rc;
}

コード例 #2

ファイル: pci.c プロジェクト: Fantu/Xen

int pci_conf_write_intercept(unsigned int seg, unsigned int bdf,
                             unsigned int reg, unsigned int size,
                             uint32_t *data)
{
    struct pci_dev *pdev;
    int rc = 0;

    /*
     * Avoid expensive operations when no hook is going to do anything
     * for the access anyway.
     */
    if ( reg < 64 || reg >= 256 )
        return 0;

    spin_lock(&pcidevs_lock);

    pdev = pci_get_pdev(seg, PCI_BUS(bdf), PCI_DEVFN2(bdf));
    if ( pdev )
        rc = pci_msi_conf_write_intercept(pdev, reg, size, data);

    spin_unlock(&pcidevs_lock);

    return rc;
}