[PATCH v4 2/7] drm/xe: Add ring address to LRC snapshot

[Matthew Brost]

The ring is currently in LRC BO but this may change going forward.
Include the ring address in the snapshot protecting again any future
changes.

v2:
 - s/ring_desc/ring_addr (Jonathan)

Signed-off-by: Matthew Brost <matthew.brost at intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
---
 drivers/gpu/drm/xe/xe_lrc.c | 3 +++
 drivers/gpu/drm/xe/xe_lrc.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_lrc.c b/drivers/gpu/drm/xe/xe_lrc.c
index e0d80e8201eb..cc77e5132157 100644
--- a/drivers/gpu/drm/xe/xe_lrc.c
+++ b/drivers/gpu/drm/xe/xe_lrc.c
@@ -1636,6 +1636,7 @@ struct xe_lrc_snapshot *xe_lrc_snapshot_capture(struct xe_lrc *lrc)
 		xe_vm_get(lrc->bo->vm);
 
 	snapshot->context_desc = xe_lrc_ggtt_addr(lrc);
+	snapshot->ring_addr = __xe_lrc_ring_ggtt_addr(lrc);
 	snapshot->indirect_context_desc = xe_lrc_indirect_ring_ggtt_addr(lrc);
 	snapshot->head = xe_lrc_ring_head(lrc);
 	snapshot->tail.internal = lrc->ring.tail;
@@ -1693,6 +1694,8 @@ void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer
 		return;
 
 	drm_printf(p, "\tHW Context Desc: 0x%08x\n", snapshot->context_desc);
+	drm_printf(p, "\tHW Ring address: 0x%08x\n",
+		   snapshot->ring_addr);
 	drm_printf(p, "\tHW Indirect Ring State: 0x%08x\n",
 		   snapshot->indirect_context_desc);
 	drm_printf(p, "\tLRC Head: (memory) %u\n", snapshot->head);
diff --git a/drivers/gpu/drm/xe/xe_lrc.h b/drivers/gpu/drm/xe/xe_lrc.h
index 9d64cedc4d14..37ca321ed492 100644
--- a/drivers/gpu/drm/xe/xe_lrc.h
+++ b/drivers/gpu/drm/xe/xe_lrc.h
@@ -25,6 +25,7 @@ struct xe_lrc_snapshot {
 	unsigned long lrc_size, lrc_offset;
 
 	u32 context_desc;
+	u32 ring_addr;
 	u32 indirect_context_desc;
 	u32 head;
 	struct {
-- 
2.34.1