drm/nouveau/nvenc: add a stub implementation for the GPUs where it should be supported

Mostly so we don't lose info hidden in falcon.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/core/device.h

@@ -171,7 +171,7 @@ struct nvkm_device {
 	struct nvkm_engine *mspdec;
 	struct nvkm_engine *msppp;
 	struct nvkm_engine *msvld;
-	struct nvkm_engine *nvenc[3];
+	struct nvkm_nvenc *nvenc[3];
 	struct nvkm_nvdec *nvdec[3];
 	struct nvkm_pm *pm;
 	struct nvkm_engine *sec;
@@ -245,7 +245,7 @@ struct nvkm_device_chip {
 	int (*mspdec  )(struct nvkm_device *, int idx, struct nvkm_engine **);
 	int (*msppp   )(struct nvkm_device *, int idx, struct nvkm_engine **);
 	int (*msvld   )(struct nvkm_device *, int idx, struct nvkm_engine **);
-	int (*nvenc[3])(struct nvkm_device *, int idx, struct nvkm_engine **);
+	int (*nvenc[3])(struct nvkm_device *, int idx, struct nvkm_nvenc **);
 	int (*nvdec[3])(struct nvkm_device *, int idx, struct nvkm_nvdec **);
 	int (*pm      )(struct nvkm_device *, int idx, struct nvkm_pm **);
 	int (*sec     )(struct nvkm_device *, int idx, struct nvkm_engine **);

drivers/gpu/drm/nouveau/include/nvkm/engine/nvenc.h

 /* SPDX-License-Identifier: MIT */
 #ifndef __NVKM_NVENC_H__
 #define __NVKM_NVENC_H__
+#define nvkm_nvenc(p) container_of((p), struct nvkm_nvenc, engine)
 #include <core/engine.h>
+#include <core/falcon.h>
+
+struct nvkm_nvenc {
+	const struct nvkm_nvenc_func *func;
+	struct nvkm_engine engine;
+	struct nvkm_falcon falcon;
+};
+
+int gm107_nvenc_new(struct nvkm_device *, int, struct nvkm_nvenc **);
 #endif

drivers/gpu/drm/nouveau/nvkm/engine/device/base.c

@@ -1988,6 +1988,7 @@ nv117_chipset = {
 	.fifo = gm107_fifo_new,
 	.gr = gm107_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sw = gf100_sw_new,
 };
 
@@ -2059,6 +2060,8 @@ nv120_chipset = {
 	.fifo = gm200_fifo_new,
 	.gr = gm200_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
 	.sw = gf100_sw_new,
 };
 
@@ -2096,6 +2099,8 @@ nv124_chipset = {
 	.fifo = gm200_fifo_new,
 	.gr = gm200_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
 	.sw = gf100_sw_new,
 };
 
@@ -2133,6 +2138,7 @@ nv126_chipset = {
 	.fifo = gm200_fifo_new,
 	.gr = gm200_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sw = gf100_sw_new,
 };
 
@@ -2197,6 +2203,9 @@ nv130_chipset = {
 	.fifo = gp100_fifo_new,
 	.gr = gp100_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
+	.nvenc[2] = gm107_nvenc_new,
 	.sw = gf100_sw_new,
 };
 
@@ -2233,6 +2242,8 @@ nv132_chipset = {
 	.fifo = gp100_fifo_new,
 	.gr = gp102_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
 	.sec2 = gp102_sec2_new,
 	.sw = gf100_sw_new,
 };
@@ -2270,6 +2281,8 @@ nv134_chipset = {
 	.fifo = gp100_fifo_new,
 	.gr = gp104_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
 	.sec2 = gp102_sec2_new,
 	.sw = gf100_sw_new,
 };
@@ -2307,6 +2320,7 @@ nv136_chipset = {
 	.fifo = gp100_fifo_new,
 	.gr = gp104_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sec2 = gp102_sec2_new,
 	.sw = gf100_sw_new,
 };
@@ -2344,6 +2358,8 @@ nv137_chipset = {
 	.fifo = gp100_fifo_new,
 	.gr = gp107_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
 	.sec2 = gp102_sec2_new,
 	.sw = gf100_sw_new,
 };
@@ -2449,6 +2465,9 @@ nv140_chipset = {
 	.fifo = gv100_fifo_new,
 	.gr = gv100_gr_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
+	.nvenc[1] = gm107_nvenc_new,
+	.nvenc[2] = gm107_nvenc_new,
 	.sec2 = gp108_sec2_new,
 };
 
@@ -2484,6 +2503,7 @@ nv162_chipset = {
 	.dma = gv100_dma_new,
 	.fifo = tu102_fifo_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sec2 = tu102_sec2_new,
 };
 
@@ -2520,6 +2540,7 @@ nv164_chipset = {
 	.fifo = tu102_fifo_new,
 	.nvdec[0] = gm107_nvdec_new,
 	.nvdec[1] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sec2 = tu102_sec2_new,
 };
 
@@ -2557,6 +2578,7 @@ nv166_chipset = {
 	.nvdec[0] = gm107_nvdec_new,
 	.nvdec[1] = gm107_nvdec_new,
 	.nvdec[2] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sec2 = tu102_sec2_new,
 };
 
@@ -2592,6 +2614,7 @@ nv167_chipset = {
 	.dma = gv100_dma_new,
 	.fifo = tu102_fifo_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sec2 = tu102_sec2_new,
 };
 
@@ -2627,6 +2650,7 @@ nv168_chipset = {
 	.dma = gv100_dma_new,
 	.fifo = tu102_fifo_new,
 	.nvdec[0] = gm107_nvdec_new,
+	.nvenc[0] = gm107_nvenc_new,
 	.sec2 = tu102_sec2_new,
 };
 
@@ -2724,9 +2748,9 @@ nvkm_device_engine(struct nvkm_device *device, int index)
 	_(MSPDEC , device->mspdec  ,  device->mspdec);
 	_(MSPPP  , device->msppp   ,  device->msppp);
 	_(MSVLD  , device->msvld   ,  device->msvld);
-	_(NVENC0 , device->nvenc[0],  device->nvenc[0]);
-	_(NVENC1 , device->nvenc[1],  device->nvenc[1]);
-	_(NVENC2 , device->nvenc[2],  device->nvenc[2]);
+	_(NVENC0 , device->nvenc[0], &device->nvenc[0]->engine);
+	_(NVENC1 , device->nvenc[1], &device->nvenc[1]->engine);
+	_(NVENC2 , device->nvenc[2], &device->nvenc[2]->engine);
 	_(NVDEC0 , device->nvdec[0], &device->nvdec[0]->engine);
 	_(NVDEC1 , device->nvdec[1], &device->nvdec[1]->engine);
 	_(NVDEC2 , device->nvdec[2], &device->nvdec[2]->engine);

drivers/gpu/drm/nouveau/nvkm/engine/nvenc/Kbuild

 # SPDX-License-Identifier: MIT
-#nvkm-y += nvkm/engine/nvenc/base.o
+nvkm-y += nvkm/engine/nvenc/base.o
+nvkm-y += nvkm/engine/nvenc/gm107.o

drivers/gpu/drm/nouveau/nvkm/engine/nvenc/base.c

+/*
+ * Copyright 2019 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 "priv.h"
+#include <core/firmware.h>
+
+static void *
+nvkm_nvenc_dtor(struct nvkm_engine *engine)
+{
+	struct nvkm_nvenc *nvenc = nvkm_nvenc(engine);
+	nvkm_falcon_dtor(&nvenc->falcon);
+	return nvenc;
+}
+
+static const struct nvkm_engine_func
+nvkm_nvenc = {
+	.dtor = nvkm_nvenc_dtor,
+};
+
+int
+nvkm_nvenc_new_(const struct nvkm_nvenc_fwif *fwif, struct nvkm_device *device,
+		int index, struct nvkm_nvenc **pnvenc)
+{
+	struct nvkm_nvenc *nvenc;
+	int ret;
+
+	if (!(nvenc = *pnvenc = kzalloc(sizeof(*nvenc), GFP_KERNEL)))
+		return -ENOMEM;
+
+	ret = nvkm_engine_ctor(&nvkm_nvenc, device, index, true,
+			       &nvenc->engine);
+	if (ret)
+		return ret;
+
+	fwif = nvkm_firmware_load(&nvenc->engine.subdev, fwif, "Nvenc", nvenc);
+	if (IS_ERR(fwif))
+		return -ENODEV;
+
+	nvenc->func = fwif->func;
+
+	return nvkm_falcon_ctor(nvenc->func->flcn, &nvenc->engine.subdev,
+				nvkm_subdev_name[index], 0, &nvenc->falcon);
+};

drivers/gpu/drm/nouveau/nvkm/engine/nvenc/gm107.c

+/*
+ * Copyright 2019 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"
+
+static const struct nvkm_falcon_func
+gm107_nvenc_flcn = {
+	.load_imem = nvkm_falcon_v1_load_imem,
+	.load_dmem = nvkm_falcon_v1_load_dmem,
+	.read_dmem = nvkm_falcon_v1_read_dmem,
+	.bind_context = nvkm_falcon_v1_bind_context,
+	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
+	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
+	.set_start_addr = nvkm_falcon_v1_set_start_addr,
+	.start = nvkm_falcon_v1_start,
+	.enable = nvkm_falcon_v1_enable,
+	.disable = nvkm_falcon_v1_disable,
+};
+
+static const struct nvkm_nvenc_func
+gm107_nvenc = {
+	.flcn = &gm107_nvenc_flcn,
+};
+
+static int
+gm107_nvenc_nofw(struct nvkm_nvenc *nvenc, int ver,
+		 const struct nvkm_nvenc_fwif *fwif)
+{
+	return 0;
+}
+
+static const struct nvkm_nvenc_fwif
+gm107_nvenc_fwif[] = {
+	{ -1, gm107_nvenc_nofw, &gm107_nvenc },
+	{}
+};
+
+int
+gm107_nvenc_new(struct nvkm_device *device, int index,
+		struct nvkm_nvenc **pnvenc)
+{
+	return nvkm_nvenc_new_(gm107_nvenc_fwif, device, index, pnvenc);
+}

drivers/gpu/drm/nouveau/nvkm/engine/nvenc/priv.h

+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_NVENC_PRIV_H__
+#define __NVKM_NVENC_PRIV_H__
+#include <engine/nvenc.h>
+
+struct nvkm_nvenc_func {
+	const struct nvkm_falcon_func *flcn;
+};
+
+struct nvkm_nvenc_fwif {
+	int version;
+	int (*load)(struct nvkm_nvenc *, int ver,
+		    const struct nvkm_nvenc_fwif *);
+	const struct nvkm_nvenc_func *func;
+};
+
+int nvkm_nvenc_new_(const struct nvkm_nvenc_fwif *, struct nvkm_device *,
+		    int, struct nvkm_nvenc **pnvenc);
+#endif