drm/nouveau/fifo/r535: initial support

- Adds support for allocating CHANNEL_GPFIFO classes from RM.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-39-skeggsb@gmail.com

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h b/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h
index 7de63718ae7e..93c75540ba5a 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/engine/fifo.h
@@ -4,6 +4,7 @@
 #include <core/engine.h>
 #include <core/object.h>
 #include <core/event.h>
+#include <subdev/gsp.h>
 struct nvkm_fault_data;
 
 #define NVKM_FIFO_ENGN_NR 16
@@ -35,6 +36,14 @@ struct nvkm_chan {
 	atomic_t blocked;
 	atomic_t errored;
 
+	struct {
+		struct nvkm_gsp_object object;
+		struct {
+			dma_addr_t addr;
+			void *ptr;
+		} mthdbuf;
+	} rm;
+
 	struct list_head cctxs;
 	struct list_head head;
 };
@@ -71,6 +80,10 @@ struct nvkm_fifo {
 		struct list_head list;
 	} userd;
 
+	struct {
+		u32 mthdbuf_size;
+	} rm;
+
 	spinlock_t lock;
 	struct mutex mutex;
 };