drm/nouveau/ce/ga100-: initial support

- replaces the hacked-up version that existed solely to support TTM
- noop until the next commit, adding proper support for ampere host

v2. fixup for ga103 early merge

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

4 files changed, 132 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/ce/Kbuild b/drivers/gpu/drm/nouveau/nvkm/engine/ce/Kbuild
index ba88613e1e46..8bf1635ffabc 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/ce/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/ce/Kbuild
@@ -8,3 +8,5 @@ nvkm-y += nvkm/engine/ce/gp100.o
 nvkm-y += nvkm/engine/ce/gp102.o
 nvkm-y += nvkm/engine/ce/gv100.o
 nvkm-y += nvkm/engine/ce/tu102.o
+nvkm-y += nvkm/engine/ce/ga100.o
+nvkm-y += nvkm/engine/ce/ga102.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/ce/ga100.c b/drivers/gpu/drm/nouveau/nvkm/engine/ce/ga100.c
new file mode 100644
index 000000000000..6648ed62daa6
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/ce/ga100.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+#include <subdev/vfn.h>
+
+#include <nvif/class.h>
+
+static irqreturn_t
+ga100_ce_intr(struct nvkm_inth *inth)
+{
+	struct nvkm_subdev *subdev = container_of(inth, typeof(*subdev), inth);
+
+	/*TODO*/
+	nvkm_error(subdev, "intr\n");
+	return IRQ_NONE;
+}
+
+int
+ga100_ce_fini(struct nvkm_engine *engine, bool suspend)
+{
+	nvkm_inth_block(&engine->subdev.inth);
+	return 0;
+}
+
+int
+ga100_ce_init(struct nvkm_engine *engine)
+{
+	nvkm_inth_allow(&engine->subdev.inth);
+	return 0;
+}
+
+int
+ga100_ce_oneinit(struct nvkm_engine *engine)
+{
+	struct nvkm_subdev *subdev = &engine->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 vector;
+
+	vector = nvkm_rd32(device, 0x10442c + (subdev->inst * 0x80)) & 0x00000fff;
+
+	return nvkm_inth_add(&device->vfn->intr, vector, NVKM_INTR_PRIO_NORMAL,
+			     subdev, ga100_ce_intr, &subdev->inth);
+}
+
+static const struct nvkm_engine_func
+ga100_ce = {
+	.oneinit = ga100_ce_oneinit,
+	.init = ga100_ce_init,
+	.fini = ga100_ce_fini,
+	.cclass = &gv100_ce_cclass,
+	.sclass = {
+		{ -1, -1, AMPERE_DMA_COPY_A },
+		{}
+	}
+};
+
+int
+ga100_ce_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	     struct nvkm_engine **pengine)
+{
+	return nvkm_engine_new_(&ga100_ce, device, type, inst, true, pengine);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/ce/ga102.c b/drivers/gpu/drm/nouveau/nvkm/engine/ce/ga102.c
new file mode 100644
index 000000000000..9f3448ad625f
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/ce/ga102.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2021 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "priv.h"
+
+#include <nvif/class.h>
+
+static const struct nvkm_engine_func
+ga102_ce = {
+	.oneinit = ga100_ce_oneinit,
+	.init = ga100_ce_init,
+	.fini = ga100_ce_fini,
+	.cclass = &gv100_ce_cclass,
+	.sclass = {
+		{ -1, -1, AMPERE_DMA_COPY_A },
+		{ -1, -1, AMPERE_DMA_COPY_B },
+		{}
+	}
+};
+
+int
+ga102_ce_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	     struct nvkm_engine **pengine)
+{
+	return nvkm_engine_new_(&ga102_ce, device, type, inst, true, pengine);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/ce/priv.h b/drivers/gpu/drm/nouveau/nvkm/engine/ce/priv.h
index cd53b93664d6..c4c046916fa6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/ce/priv.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/ce/priv.h
@@ -8,4 +8,8 @@ void gk104_ce_intr(struct nvkm_engine *);
 void gp100_ce_intr(struct nvkm_engine *);
 
 extern const struct nvkm_object_func gv100_ce_cclass;
+
+int ga100_ce_oneinit(struct nvkm_engine *);
+int ga100_ce_init(struct nvkm_engine *);
+int ga100_ce_fini(struct nvkm_engine *, bool);
 #endif