drm/nouveau/gsp: add hal for fifo.rsvd_chids

555.42.02 reserves some CHIDs for internal use.

Signed-off-by: Ben Skeggs <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>
Reviewed-by: Timur Tabi <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

Author: Ben Skeggs

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/fifo.c

@@ -427,13 +427,14 @@ r535_fifo_runl_ctor(struct nvkm_fifo *fifo)
 	struct nvkm_rm *rm = gsp->rm;
 	struct nvkm_runl *runl;
 	struct nvkm_engn *engn;
-	u32 cgids = 2048;
 	u32 chids = 2048;
+	u32 first = rm->api->fifo->rsvd_chids;
+	u32 count = chids - first;
 	int ret;
 	NV2080_CTRL_FIFO_GET_DEVICE_INFO_TABLE_PARAMS *ctrl;
 
-	if ((ret = nvkm_chid_new(&nvkm_chan_event, subdev, cgids, 0, cgids, &fifo->cgid)) ||
-	    (ret = nvkm_chid_new(&nvkm_chan_event, subdev, chids, 0, chids, &fifo->chid)))
+	if ((ret = nvkm_chid_new(&nvkm_chan_event, subdev, chids, first, count, &fifo->cgid)) ||
+	    (ret = nvkm_chid_new(&nvkm_chan_event, subdev, chids, first, count, &fifo->chid)))
 		return ret;
 
 	ctrl = nvkm_gsp_rm_ctrl_rd(&gsp->internal.device.subdevice,

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/r535/gr.c

@@ -298,7 +298,8 @@ r535_gr_oneinit(struct nvkm_gr *base)
 	if (ret)
 		goto done;
 
-	ret = rm->api->fifo->chan.alloc(&golden.vmm->rm.device, NVKM_RM_CHAN(0), 1, 0, true, 0,
+	ret = rm->api->fifo->chan.alloc(&golden.vmm->rm.device, NVKM_RM_CHAN(0),
+					1, 0, true, rm->api->fifo->rsvd_chids,
 					nvkm_memory_addr(golden.inst),
 					nvkm_memory_addr(golden.inst) + 0x1000,
 					nvkm_memory_addr(golden.inst) + 0x2000,

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/rm/rm.h

@@ -101,6 +101,7 @@ struct nvkm_rm_api {
 		int (*xlat_rm_engine_type)(u32 rm_engine_type,
 					   enum nvkm_subdev_type *, int *nv2080_type);
 		int (*ectx_size)(struct nvkm_fifo *);
+		unsigned rsvd_chids;
 		struct {
 			int (*alloc)(struct nvkm_gsp_device *, u32 handle,
 				     u32 nv2080_engine_type, u8 runq, bool priv, int chid,