[PATCH 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>
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 c8e242d8fb09..779311d9e3be 100644
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/drivers/gpu/drm/xe/xe_lrc.c
@@ -21,6 +21,8 @@
 #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)
@@ -534,6 +536,27 @@ 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);
@@ -669,6 +692,7 @@ 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