Let's introduce a helper function aiming at recording an
event in the event queue.
Signed-off-by: NEric Auger <eric.auger@redhat.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1524665762-31355-9-git-send-email-eric.auger@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Now we have relevant helpers for queue and irq
management, let's implement MMIO write operations.
Signed-off-by: NEric Auger <eric.auger@redhat.com>
Signed-off-by: NPrem Mallappa <prem.mallappa@broadcom.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1524665762-31355-8-git-send-email-eric.auger@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

We introduce helpers to read/write into the command and event
circular queues.

smmuv3_write_eventq and smmuv3_cmq_consume will become static
in subsequent patches.

Invalidation commands are not yet dealt with. We do not cache
data that need to be invalidated. This will change with vhost
integration.
Signed-off-by: NEric Auger <eric.auger@redhat.com>
Signed-off-by: NPrem Mallappa <prem.mallappa@broadcom.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1524665762-31355-7-git-send-email-eric.auger@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

We introduce some helpers to handle wired IRQs and especially
GERROR interrupt. SMMU writes GERROR register on GERROR event
and SW acks GERROR interrupts by setting GERRORn.

The Wired interrupts are edge sensitive hence the pulse usage.
Signed-off-by: NEric Auger <eric.auger@redhat.com>
Signed-off-by: NPrem Mallappa <prem.mallappa@broadcom.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1524665762-31355-6-git-send-email-eric.auger@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

This patch implements a skeleton for the smmuv3 device.
Datatypes and register definitions are introduced. The MMIO
region, the interrupts and the queue are initialized.

Only the MMIO read operation is implemented here.
Signed-off-by: NPrem Mallappa <prem.mallappa@broadcom.com>
Signed-off-by: NEric Auger <eric.auger@redhat.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 1524665762-31355-5-git-send-email-eric.auger@redhat.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>