accel/ivpu: Fix NOC firewall interrupt handling
authorAndrzej Kacprowski <Andrzej.Kacprowski@intel.com>
Thu, 17 Oct 2024 14:49:58 +0000 (16:49 +0200)
committerJacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Wed, 30 Oct 2024 09:17:00 +0000 (10:17 +0100)
commit72f7e16eccddde99386a10eb2d08833e805917c6
tree7031d963424d45507456fc0d0e79548f5cf441f5
parent746ae46c11137ba21f0c0c68f082a9d8c1222c78
accel/ivpu: Fix NOC firewall interrupt handling

The NOC firewall interrupt means that the HW prevented
unauthorized access to a protected resource, so there
is no need to trigger device reset in such case.

To facilitate security testing add firewall_irq_counter
debugfs file that tracks firewall interrupts.

Fixes: 8a27ad81f7d3 ("accel/ivpu: Split IP and buttress code")
Cc: stable@vger.kernel.org # v6.11+
Signed-off-by: Andrzej Kacprowski <Andrzej.Kacprowski@intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241017144958.79327-1-jacek.lawrynowicz@linux.intel.com
drivers/accel/ivpu/ivpu_debugfs.c
drivers/accel/ivpu/ivpu_hw.c
drivers/accel/ivpu/ivpu_hw.h
drivers/accel/ivpu/ivpu_hw_ip.c