accel/ivpu: Fix missing MMU events from reserved SSID

commit 353b8f4 upstream.

Generate recovery when fault from reserved context is detected.
Add Abort (A) bit to reserved (1) SSID to ensure NPU also receives a fault.

There is no way to create a file_priv with reserved SSID
but it is still possible to receive MMU faults from that SSID
as it is a default NPU HW setting. Such situation will occur if
FW freed context related resources but still performed access to DRAM.

Signed-off-by: Karol Wachowski <karol.wachowski@intel.com>
Signed-off-by: Maciej Falkowski <maciej.falkowski@linux.intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250107173238.381120-9-maciej.falkowski@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: kwachows

drivers/accel/ivpu/ivpu_mmu.c

@@ -725,8 +725,8 @@ static int ivpu_mmu_cdtab_entry_set(struct ivpu_device *vdev, u32 ssid, u64 cd_d
 	cd[2] = 0;
 	cd[3] = 0x0000000000007444;
 
-	/* For global context generate memory fault on VPU */
-	if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID)
+	/* For global and reserved contexts generate memory fault on VPU */
+	if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID || ssid == IVPU_RESERVED_CONTEXT_MMU_SSID)
 		cd[0] |= IVPU_MMU_CD_0_A;
 
 	if (valid)
@@ -945,7 +945,8 @@ void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev)
 
 	while ((event = ivpu_mmu_get_event(vdev))) {
 		ssid = FIELD_GET(IVPU_MMU_EVT_SSID_MASK, *event);
-		if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID) {
+		if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID ||
+		    ssid == IVPU_RESERVED_CONTEXT_MMU_SSID) {
 			ivpu_mmu_dump_event(vdev, event);
 			ivpu_pm_trigger_recovery(vdev, "MMU event");
 			return;