drm/nouveau/core: add SEC2 engine

SEC2 is the name given by NVIDIA to the SEC engine post-Fermi (reasons
unknown). Even though it shares the same address range as SEC, its usage
is quite different and this justifies a new engine. Add this engine and
make TOP use it all post-TOP devices should use this implementation and
not the older SEC.

Also quickly add the short gp102 implementation which will be used for
falcon booting purposes.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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

@@ -59,6 +59,7 @@ enum nvkm_devidx {
 	NVKM_ENGINE_NVDEC,
 	NVKM_ENGINE_PM,
 	NVKM_ENGINE_SEC,
+	NVKM_ENGINE_SEC2,
 	NVKM_ENGINE_SW,
 	NVKM_ENGINE_VIC,
 	NVKM_ENGINE_VP,
@@ -158,6 +159,7 @@ struct nvkm_device {
 	struct nvkm_nvdec *nvdec;
 	struct nvkm_pm *pm;
 	struct nvkm_engine *sec;
+	struct nvkm_sec2 *sec2;
 	struct nvkm_sw *sw;
 	struct nvkm_engine *vic;
 	struct nvkm_engine *vp;
@@ -228,6 +230,7 @@ struct nvkm_device_chip {
 	int (*nvdec   )(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 **);
+	int (*sec2    )(struct nvkm_device *, int idx, struct nvkm_sec2 **);
 	int (*sw      )(struct nvkm_device *, int idx, struct nvkm_sw **);
 	int (*vic     )(struct nvkm_device *, int idx, struct nvkm_engine **);
 	int (*vp      )(struct nvkm_device *, int idx, struct nvkm_engine **);

drivers/gpu/drm/nouveau/include/nvkm/engine/sec2.h

@@ -0,0 +1,13 @@
+#ifndef __NVKM_SEC2_H__
+#define __NVKM_SEC2_H__
+#include <core/engine.h>
+
+struct nvkm_sec2 {
+	struct nvkm_engine engine;
+	struct nvkm_falcon *falcon;
+	struct nvkm_msgqueue *queue;
+	struct work_struct work;
+};
+
+int gp102_sec2_new(struct nvkm_device *, int, struct nvkm_sec2 **);
+#endif

drivers/gpu/drm/nouveau/nvkm/core/subdev.c

@@ -78,6 +78,7 @@ nvkm_subdev_name[NVKM_SUBDEV_NR] = {
 	[NVKM_ENGINE_NVDEC   ] = "nvdec",
 	[NVKM_ENGINE_PM      ] = "pm",
 	[NVKM_ENGINE_SEC     ] = "sec",
+	[NVKM_ENGINE_SEC2    ] = "sec2",
 	[NVKM_ENGINE_SW      ] = "sw",
 	[NVKM_ENGINE_VIC     ] = "vic",
 	[NVKM_ENGINE_VP      ] = "vp",

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

@@ -18,6 +18,7 @@ include $(src)/nvkm/engine/nvenc/Kbuild
 include $(src)/nvkm/engine/nvdec/Kbuild
 include $(src)/nvkm/engine/pm/Kbuild
 include $(src)/nvkm/engine/sec/Kbuild
+include $(src)/nvkm/engine/sec2/Kbuild
 include $(src)/nvkm/engine/sw/Kbuild
 include $(src)/nvkm/engine/vic/Kbuild
 include $(src)/nvkm/engine/vp/Kbuild

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

@@ -2365,6 +2365,7 @@ nvkm_device_engine(struct nvkm_device *device, int index)
 	_(NVDEC  , device->nvdec   , &device->nvdec->engine);
 	_(PM     , device->pm      , &device->pm->engine);
 	_(SEC    , device->sec     ,  device->sec);
+	_(SEC2   , device->sec2    , &device->sec2->engine);
 	_(SW     , device->sw      , &device->sw->engine);
 	_(VIC    , device->vic     ,  device->vic);
 	_(VP     , device->vp      ,  device->vp);
@@ -2812,6 +2813,7 @@ nvkm_device_ctor(const struct nvkm_device_func *func,
 		_(NVKM_ENGINE_NVDEC   ,    nvdec);
 		_(NVKM_ENGINE_PM      ,       pm);
 		_(NVKM_ENGINE_SEC     ,      sec);
+		_(NVKM_ENGINE_SEC2    ,     sec2);
 		_(NVKM_ENGINE_SW      ,       sw);
 		_(NVKM_ENGINE_VIC     ,      vic);
 		_(NVKM_ENGINE_VP      ,       vp);

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

@@ -41,6 +41,7 @@
 #include <engine/nvdec.h>
 #include <engine/pm.h>
 #include <engine/sec.h>
+#include <engine/sec2.h>
 #include <engine/sw.h>
 #include <engine/vic.h>
 #include <engine/vp.h>

drivers/gpu/drm/nouveau/nvkm/engine/sec2/Kbuild

@@ -0,0 +1,2 @@
+nvkm-y += nvkm/engine/sec2/base.o
+nvkm-y += nvkm/engine/sec2/gp102.o

drivers/gpu/drm/nouveau/nvkm/engine/sec2/base.c

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 <core/msgqueue.h>
+#include <engine/falcon.h>
+
+static void *
+nvkm_sec2_dtor(struct nvkm_engine *engine)
+{
+	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
+	nvkm_msgqueue_del(&sec2->queue);
+	nvkm_falcon_del(&sec2->falcon);
+	return sec2;
+}
+
+static void
+nvkm_sec2_intr(struct nvkm_engine *engine)
+{
+	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
+	struct nvkm_subdev *subdev = &engine->subdev;
+	struct nvkm_device *device = subdev->device;
+	u32 disp = nvkm_rd32(device, 0x8701c);
+	u32 intr = nvkm_rd32(device, 0x87008) & disp & ~(disp >> 16);
+
+	if (intr & 0x00000040) {
+		schedule_work(&sec2->work);
+		nvkm_wr32(device, 0x87004, 0x00000040);
+		intr &= ~0x00000040;
+	}
+
+	if (intr) {
+		nvkm_error(subdev, "unhandled intr %08x\n", intr);
+		nvkm_wr32(device, 0x87004, intr);
+
+	}
+}
+
+static void
+nvkm_sec2_recv(struct work_struct *work)
+{
+	struct nvkm_sec2 *sec2 = container_of(work, typeof(*sec2), work);
+	nvkm_msgqueue_recv(sec2->queue);
+}
+
+
+static int
+nvkm_sec2_oneinit(struct nvkm_engine *engine)
+{
+	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
+	return nvkm_falcon_v1_new(&sec2->engine.subdev, "SEC2", 0x87000,
+				  &sec2->falcon);
+}
+
+static int
+nvkm_sec2_fini(struct nvkm_engine *engine, bool suspend)
+{
+	struct nvkm_sec2 *sec2 = nvkm_sec2(engine);
+	flush_work(&sec2->work);
+	return 0;
+}
+
+static const struct nvkm_engine_func
+nvkm_sec2 = {
+	.dtor = nvkm_sec2_dtor,
+	.oneinit = nvkm_sec2_oneinit,
+	.fini = nvkm_sec2_fini,
+	.intr = nvkm_sec2_intr,
+};
+
+int
+nvkm_sec2_new_(struct nvkm_device *device, int index,
+	       struct nvkm_sec2 **psec2)
+{
+	struct nvkm_sec2 *sec2;
+
+	if (!(sec2 = *psec2 = kzalloc(sizeof(*sec2), GFP_KERNEL)))
+		return -ENOMEM;
+	INIT_WORK(&sec2->work, nvkm_sec2_recv);
+
+	return nvkm_engine_ctor(&nvkm_sec2, device, index, true, &sec2->engine);
+};

drivers/gpu/drm/nouveau/nvkm/engine/sec2/gp102.c

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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"
+
+int
+gp102_sec2_new(struct nvkm_device *device, int index,
+	       struct nvkm_sec2 **psec2)
+{
+	return nvkm_sec2_new_(device, index, psec2);
+}

drivers/gpu/drm/nouveau/nvkm/engine/sec2/priv.h

@@ -0,0 +1,9 @@
+#ifndef __NVKM_SEC2_PRIV_H__
+#define __NVKM_SEC2_PRIV_H__
+#include <engine/sec2.h>
+
+#define nvkm_sec2(p) container_of((p), struct nvkm_sec2, engine)
+
+int nvkm_sec2_new_(struct nvkm_device *, int, struct nvkm_sec2 **);
+
+#endif

drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c

@@ -82,7 +82,7 @@ gk104_top_oneinit(struct nvkm_top *top)
 		case 0x0000000a: A_(MSVLD ); break;
 		case 0x0000000b: A_(MSENC ); break;
 		case 0x0000000c: A_(VIC   ); break;
-		case 0x0000000d: A_(SEC   ); break;
+		case 0x0000000d: A_(SEC2  ); break;
 		case 0x0000000e: B_(NVENC ); break;
 		case 0x0000000f: A_(NVENC1); break;
 		case 0x00000010: A_(NVDEC ); break;