drm/nouveau/fifo: add new channel classes

Exposes a bunch of the new features that became possible as a result
of the earlier commits.  DRM will build on this in the future to add
support for features such as SCG ("async compute") and multi-device
rendering, as part of the work necessary to be able to write a half-
decent vulkan driver - finally.

For the moment, this just crudely ports DRM to the API changes.

- channel class interfaces now the same for all HW classes
- channel group class exposed (SCG)
- channel runqueue selector exposed (SCG)
- channel sub-device id control exposed (multi-device rendering)
- channel names in logging will reflect creating process, not fd owner
- explicit USERD allocation required by VOLTA_CHANNEL_GPFIFO_A and newer
- drm is smarter about determining the appropriate channel class to use

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>

1 files changed, 3 insertions, 6 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c
index 286c1098b665..d92d1ac39191 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/fifo/gm200.c
@@ -21,8 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
-#include "gk104.h"
-#include "changk104.h"
+#include "priv.h"
 
 #include <nvif/class.h>
 
@@ -40,8 +39,6 @@ gm200_fifo_chid_nr(struct nvkm_fifo *fifo)
 
 static const struct nvkm_fifo_func
 gm200_fifo = {
-	.dtor = gk104_fifo_dtor,
-	.oneinit = gk104_fifo_oneinit,
 	.chid_nr = gm200_fifo_chid_nr,
 	.chid_ctor = gk110_fifo_chid_ctor,
 	.runq_nr = gm200_fifo_runq_nr,
@@ -58,12 +55,12 @@ gm200_fifo = {
 	.engn = &gk104_engn,
 	.engn_ce = &gk104_engn_ce,
 	.cgrp = {{ 0, 0,  KEPLER_CHANNEL_GROUP_A  }, &gk110_cgrp },
-	.chan = {{ 0, 0, MAXWELL_CHANNEL_GPFIFO_A }, &gm107_chan, .ctor = &gk104_fifo_gpfifo_new },
+	.chan = {{ 0, 0, MAXWELL_CHANNEL_GPFIFO_A }, &gm107_chan },
 };
 
 int
 gm200_fifo_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 	       struct nvkm_fifo **pfifo)
 {
-	return gk104_fifo_new_(&gm200_fifo, device, type, inst, 0, pfifo);
+	return nvkm_fifo_new_(&gm200_fifo, device, type, inst, pfifo);
 }