drm/xe/vf: Update LRC with memory based interrupts data

When Memory Based Interrupts are used, the VF driver must provide
in the LRC the references to the Source and Status Report Pages.

Update the LRC according to the requirements.
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20231214185955.1791-9-michal.wajdeczko@intel.comSigned-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>

drivers/gpu/drm/xe/xe_lrc.c

@@ -19,6 +19,8 @@
 #include "xe_gt_printk.h"
 #include "xe_hw_fence.h"
 #include "xe_map.h"
+#include "xe_memirq.h"
+#include "xe_sriov.h"
 #include "xe_vm.h"
 
 #define CTX_VALID				(1 << 0)
@@ -532,6 +534,27 @@ static void set_context_control(u32 *regs, struct xe_hw_engine *hwe)
 	/* TODO: Timestamp */
 }
 
+static void set_memory_based_intr(u32 *regs, struct xe_hw_engine *hwe)
+{
+	struct xe_memirq *memirq = &gt_to_tile(hwe->gt)->sriov.vf.memirq;
+	struct xe_device *xe = gt_to_xe(hwe->gt);
+
+	if (!IS_SRIOV_VF(xe) || !xe_device_has_memirq(xe))
+		return;
+
+	regs[CTX_LRM_INT_MASK_ENABLE] = MI_LOAD_REGISTER_MEM |
+					MI_LRI_LRM_CS_MMIO | MI_LRM_USE_GGTT;
+	regs[CTX_INT_MASK_ENABLE_REG] = RING_IMR(0).addr;
+	regs[CTX_INT_MASK_ENABLE_PTR] = xe_memirq_enable_ptr(memirq);
+
+	regs[CTX_LRI_INT_REPORT_PTR] = MI_LOAD_REGISTER_IMM | MI_LRI_NUM_REGS(2) |
+				       MI_LRI_LRM_CS_MMIO | MI_LRI_FORCE_POSTED;
+	regs[CTX_INT_STATUS_REPORT_REG] = RING_INT_STATUS_RPT_PTR(0).addr;
+	regs[CTX_INT_STATUS_REPORT_PTR] = xe_memirq_status_ptr(memirq);
+	regs[CTX_INT_SRC_REPORT_REG] = RING_INT_SRC_RPT_PTR(0).addr;
+	regs[CTX_INT_SRC_REPORT_PTR] = xe_memirq_source_ptr(memirq);
+}
+
 static int lrc_ring_mi_mode(struct xe_hw_engine *hwe)
 {
 	struct xe_device *xe = gt_to_xe(hwe->gt);
@@ -667,6 +690,7 @@ static void *empty_lrc_data(struct xe_hw_engine *hwe)
 	regs = data + LRC_PPHWSP_SIZE;
 	set_offsets(regs, reg_offsets(xe, hwe->class), hwe);
 	set_context_control(regs, hwe);
+	set_memory_based_intr(regs, hwe);
 	reset_stop_ring(regs, hwe);
 
 	return data;