drm/nouveau/dma/gv100: initial support

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

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

@@ -27,4 +27,5 @@ int nv04_dma_new(struct nvkm_device *, int, struct nvkm_dma **);
 int nv50_dma_new(struct nvkm_device *, int, struct nvkm_dma **);
 int gf100_dma_new(struct nvkm_device *, int, struct nvkm_dma **);
 int gf119_dma_new(struct nvkm_device *, int, struct nvkm_dma **);
+int gv100_dma_new(struct nvkm_device *, int, struct nvkm_dma **);
 #endif

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

@@ -2416,6 +2416,7 @@ nv140_chipset = {
 	.therm = gp100_therm_new,
 	.timer = gk20a_timer_new,
 	.top = gk104_top_new,
+	.dma = gv100_dma_new,
 };
 
 static int

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

@@ -3,9 +3,11 @@ nvkm-y += nvkm/engine/dma/nv04.o
 nvkm-y += nvkm/engine/dma/nv50.o
 nvkm-y += nvkm/engine/dma/gf100.o
 nvkm-y += nvkm/engine/dma/gf119.o
+nvkm-y += nvkm/engine/dma/gv100.o
 
 nvkm-y += nvkm/engine/dma/user.o
 nvkm-y += nvkm/engine/dma/usernv04.o
 nvkm-y += nvkm/engine/dma/usernv50.o
 nvkm-y += nvkm/engine/dma/usergf100.o
 nvkm-y += nvkm/engine/dma/usergf119.o
+nvkm-y += nvkm/engine/dma/usergv100.o

drivers/gpu/drm/nouveau/nvkm/engine/dma/gv100.c

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2018 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 "user.h"
+
+static const struct nvkm_dma_func
+gv100_dma = {
+	.class_new = gv100_dmaobj_new,
+};
+
+int
+gv100_dma_new(struct nvkm_device *device, int index, struct nvkm_dma **pdma)
+{
+	return nvkm_dma_new_(&gv100_dma, device, index, pdma);
+}

drivers/gpu/drm/nouveau/nvkm/engine/dma/user.h

@@ -16,4 +16,6 @@ int gf100_dmaobj_new(struct nvkm_dma *, const struct nvkm_oclass *, void *, u32,
 		     struct nvkm_dmaobj **);
 int gf119_dmaobj_new(struct nvkm_dma *, const struct nvkm_oclass *, void *, u32,
 		     struct nvkm_dmaobj **);
+int gv100_dmaobj_new(struct nvkm_dma *, const struct nvkm_oclass *, void *, u32,
+		     struct nvkm_dmaobj **);
 #endif

drivers/gpu/drm/nouveau/nvkm/engine/dma/usergv100.c

@@ -0,0 +1,119 @@
+/*
+ * Copyright 2018 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.
+ */
+#define gv100_dmaobj(p) container_of((p), struct gv100_dmaobj, base)
+#include "user.h"
+
+#include <core/client.h>
+#include <core/gpuobj.h>
+#include <subdev/fb.h>
+
+#include <nvif/cl0002.h>
+#include <nvif/unpack.h>
+
+struct gv100_dmaobj {
+	struct nvkm_dmaobj base;
+	u32 flags0;
+};
+
+static int
+gv100_dmaobj_bind(struct nvkm_dmaobj *base, struct nvkm_gpuobj *parent,
+		  int align, struct nvkm_gpuobj **pgpuobj)
+{
+	struct gv100_dmaobj *dmaobj = gv100_dmaobj(base);
+	struct nvkm_device *device = dmaobj->base.dma->engine.subdev.device;
+	u64 start = dmaobj->base.start >> 8;
+	u64 limit = dmaobj->base.limit >> 8;
+	int ret;
+
+	ret = nvkm_gpuobj_new(device, 24, align, false, parent, pgpuobj);
+	if (ret == 0) {
+		nvkm_kmap(*pgpuobj);
+		nvkm_wo32(*pgpuobj, 0x00, dmaobj->flags0);
+		nvkm_wo32(*pgpuobj, 0x04, lower_32_bits(start));
+		nvkm_wo32(*pgpuobj, 0x08, upper_32_bits(start));
+		nvkm_wo32(*pgpuobj, 0x0c, lower_32_bits(limit));
+		nvkm_wo32(*pgpuobj, 0x10, upper_32_bits(limit));
+		nvkm_done(*pgpuobj);
+	}
+
+	return ret;
+}
+
+static const struct nvkm_dmaobj_func
+gv100_dmaobj_func = {
+	.bind = gv100_dmaobj_bind,
+};
+
+int
+gv100_dmaobj_new(struct nvkm_dma *dma, const struct nvkm_oclass *oclass,
+		 void *data, u32 size, struct nvkm_dmaobj **pdmaobj)
+{
+	union {
+		struct gf119_dma_v0 v0;
+	} *args;
+	struct nvkm_object *parent = oclass->parent;
+	struct gv100_dmaobj *dmaobj;
+	u32 kind, page;
+	int ret;
+
+	if (!(dmaobj = kzalloc(sizeof(*dmaobj), GFP_KERNEL)))
+		return -ENOMEM;
+	*pdmaobj = &dmaobj->base;
+
+	ret = nvkm_dmaobj_ctor(&gv100_dmaobj_func, dma, oclass,
+			       &data, &size, &dmaobj->base);
+	if (ret)
+		return ret;
+
+	ret  = -ENOSYS;
+	args = data;
+
+	nvif_ioctl(parent, "create gv100 dma size %d\n", size);
+	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
+		nvif_ioctl(parent,
+			   "create gv100 dma vers %d page %d kind %02x\n",
+			   args->v0.version, args->v0.page, args->v0.kind);
+		kind = args->v0.kind != 0;
+		page = args->v0.page != 0;
+	} else
+	if (size == 0) {
+		kind = 0;
+		page = GF119_DMA_V0_PAGE_SP;
+	} else
+		return ret;
+
+	if (kind)
+		dmaobj->flags0 |= 0x00100000;
+	if (page)
+		dmaobj->flags0 |= 0x00000040;
+	dmaobj->flags0 |= 0x00000004; /* rw */
+
+	switch (dmaobj->base.target) {
+	case NV_MEM_TARGET_VRAM       : dmaobj->flags0 |= 0x00000001; break;
+	case NV_MEM_TARGET_PCI        : dmaobj->flags0 |= 0x00000002; break;
+	case NV_MEM_TARGET_PCI_NOSNOOP: dmaobj->flags0 |= 0x00000003; break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}