[CI v2 08/10] drm/xe/vf: Update LRC with memory based interrupts data

[Michal Wajdeczko]

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 at intel.com>
Link: https://lore.kernel.org/r/20231214185955.1791-9-michal.wajdeczko@intel.com
Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
---
 drivers/gpu/drm/xe/xe_lrc.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c
index 44586e612eaf..f17e9785355e 100644
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/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;
-- 
2.25.1