Add a check to the init-path of the AMD IOMMUv2 driver if
the hardware is available in the system. Only allocate all
the resources if it is really available.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

This call-back is invoked when the task that is bound to a
pasid is about to exit. The driver can use it to shutdown
all context related to that context in a safe way.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

This callback can be used to change the PRI response code
sent to a device when a PPR fault fails.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

Since pages are not pinned anymore we need notifications
when the VMM changes the page-tables. Use mmu_notifiers for
that.
Also use the task_exit notifier from the profiling subsystem
to shutdown all contexts related to this task.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

Register the notifier for PPR faults and handle them as
necessary.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

This patch adds routines to bind a specific process
address-space to a given PASID.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

This patch adds the amd_iommu_init_device() and
amd_iommu_free_device() functions which make a device and
the IOMMU ready for IOMMUv2 usage.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>

Add a Kconfig option for the optional driver. Since it is
optional it can be compiled as a module and will only be
loaded when required by another driver.
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>