int vboxPciOsDevUnregisterWithIommu(PVBOXRAWPCIINS pIns)
{
#ifdef VBOX_WITH_IOMMU
int rc = VINF_SUCCESS;
PVBOXRAWPCIDRVVM pData = VBOX_DRV_VMDATA(pIns);
if (!pData)
{
printk(KERN_DEBUG "vboxpci: VM data not inited (detach)\n");
return VERR_INVALID_PARAMETER;
}
if (!pData->pIommuDomain)
{
printk(KERN_DEBUG "vboxpci: No IOMMU domain (detach)\n");
return VERR_NOT_FOUND;
}
if (pIns->fIommuUsed)
{
iommu_detach_device(pData->pIommuDomain, &pIns->pPciDev->dev);
printk(KERN_DEBUG "vboxpci: iommu_detach_device()\n");
pIns->fIommuUsed = false;
}
return rc;
#else
return VERR_NOT_SUPPORTED;
#endif
}
static DECLCALLBACK(int) vboxPciDevPowerStateChange(PRAWPCIDEVPORT pPort,
PCIRAWPOWERSTATE aState,
uint64_t *pu64Param)
{
PVBOXRAWPCIINS pThis = DEVPORT_2_VBOXRAWPCIINS(pPort);
int rc;
RTSPINLOCKTMP aTmp;
vboxPciDevLock(pThis, &aTmp);
rc = vboxPciOsDevPowerStateChange(pThis, aState);
switch (aState)
{
case PCIRAW_POWER_ON:
/*
* Let virtual device know about VM caps.
*/
*pu64Param = VBOX_DRV_VMDATA(pThis)->pPerVmData->fVmCaps;
break;
default:
pu64Param = 0;
break;
}
vboxPciDevUnlock(pThis, &aTmp);
return rc;
}
static int vboxPciLinuxDevRegisterWithIommu(PVBOXRAWPCIINS pIns)
{
#ifdef VBOX_WITH_IOMMU
int rc = VINF_SUCCESS;
struct pci_dev *pPciDev = pIns->pPciDev;
PVBOXRAWPCIDRVVM pData = VBOX_DRV_VMDATA(pIns);
IPRT_LINUX_SAVE_EFL_AC();
if (RT_LIKELY(pData))
{
if (RT_LIKELY(pData->pIommuDomain))
{
/** @todo: KVM checks IOMMU_CAP_CACHE_COHERENCY and sets
* flag IOMMU_CACHE later used when mapping physical
* addresses, which could improve performance.
*/
int rcLnx = iommu_attach_device(pData->pIommuDomain, &pPciDev->dev);
if (!rcLnx)
{
vbpci_printk(KERN_DEBUG, pPciDev, "attached to IOMMU\n");
pIns->fIommuUsed = true;
rc = VINF_SUCCESS;
}
else
{
vbpci_printk(KERN_DEBUG, pPciDev, "failed to attach to IOMMU, error %d\n", rcLnx);
rc = VERR_INTERNAL_ERROR;
}
}
else
{
vbpci_printk(KERN_DEBUG, pIns->pPciDev, "cannot attach to IOMMU, no domain\n");
rc = VERR_NOT_FOUND;
}
}
else
{
vbpci_printk(KERN_DEBUG, pPciDev, "cannot attach to IOMMU, no VM data\n");
rc = VERR_INVALID_PARAMETER;
}
IPRT_LINUX_RESTORE_EFL_AC();
return rc;
#else
return VERR_NOT_SUPPORTED;
#endif
}
int vboxPciOsDevRegisterWithIommu(PVBOXRAWPCIINS pIns)
{
#ifdef VBOX_WITH_IOMMU
int rc;
int status;
PVBOXRAWPCIDRVVM pData = VBOX_DRV_VMDATA(pIns);
if (!pData)
{
printk(KERN_DEBUG "vboxpci: VM data not initialized (attach)\n");
return VERR_INVALID_PARAMETER;
}
if (!pData->pIommuDomain)
{
printk(KERN_DEBUG "vboxpci: No IOMMU domain (attach)\n");
return VERR_NOT_FOUND;
}
status = iommu_attach_device(pData->pIommuDomain, &pIns->pPciDev->dev);
if (status == 0)
{
printk(KERN_DEBUG "vboxpci: iommu_attach_device() success\n");
pIns->fIommuUsed = true;
rc = VINF_SUCCESS;;
}
else
{
printk(KERN_DEBUG "vboxpci: iommu_attach_device() failed\n");
rc = VERR_INTERNAL_ERROR;
}
/* @todo: KVM checks IOMMU_CAP_CACHE_COHERENCY and sets
flag IOMMU_CACHE later used when mapping physical
addresses, which could improve performance. */
return rc;
#else
return VERR_NOT_SUPPORTED;
#endif
}
static int vboxPciLinuxDevUnregisterWithIommu(PVBOXRAWPCIINS pIns)
{
#ifdef VBOX_WITH_IOMMU
int rc = VINF_SUCCESS;
struct pci_dev *pPciDev = pIns->pPciDev;
PVBOXRAWPCIDRVVM pData = VBOX_DRV_VMDATA(pIns);
IPRT_LINUX_SAVE_EFL_AC();
if (RT_LIKELY(pData))
{
if (RT_LIKELY(pData->pIommuDomain))
{
if (pIns->fIommuUsed)
{
iommu_detach_device(pData->pIommuDomain, &pIns->pPciDev->dev);
vbpci_printk(KERN_DEBUG, pPciDev, "detached from IOMMU\n");
pIns->fIommuUsed = false;
}
}
else
{
vbpci_printk(KERN_DEBUG, pPciDev,
"cannot detach from IOMMU, no domain\n");
rc = VERR_NOT_FOUND;
}
}
else
{
vbpci_printk(KERN_DEBUG, pPciDev,
"cannot detach from IOMMU, no VM data\n");
rc = VERR_INVALID_PARAMETER;
}
IPRT_LINUX_RESTORE_EFL_AC();
return rc;
#else
return VERR_NOT_SUPPORTED;
#endif
}
