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;
}
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;
}