drm/nouveau/fifo/gv100: initial support

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

4 files changed, 103 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvif/Kbuild b/drivers/gpu/drm/nouveau/nvif/Kbuild
index 3db12504140f..42e8c85caa33 100644
--- a/drivers/gpu/drm/nouveau/nvif/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvif/Kbuild
@@ -8,3 +8,7 @@ nvif-y += nvif/mem.o
 nvif-y += nvif/mmu.o
 nvif-y += nvif/notify.o
 nvif-y += nvif/vmm.o
+
+# Usermode classes
+nvif-y += nvif/user.o
+nvif-y += nvif/userc361.o
diff --git a/drivers/gpu/drm/nouveau/nvif/device.c b/drivers/gpu/drm/nouveau/nvif/device.c
index ca5eb3dde70a..1ec101ba3b42 100644
--- a/drivers/gpu/drm/nouveau/nvif/device.c
+++ b/drivers/gpu/drm/nouveau/nvif/device.c
@@ -37,6 +37,7 @@ nvif_device_time(struct nvif_device *device)
 void
 nvif_device_fini(struct nvif_device *device)
 {
+	nvif_user_fini(device);
 	kfree(device->runlist);
 	device->runlist = NULL;
 	nvif_object_fini(&device->object);
@@ -49,6 +50,7 @@ nvif_device_init(struct nvif_object *parent, u32 handle, s32 oclass,
 	int ret = nvif_object_init(parent, handle, oclass, data, size,
 				   &device->object);
 	device->runlist = NULL;
+	device->user.func = NULL;
 	if (ret == 0) {
 		device->info.version = 0;
 		ret = nvif_object_mthd(&device->object, NV_DEVICE_V0_INFO,
diff --git a/drivers/gpu/drm/nouveau/nvif/user.c b/drivers/gpu/drm/nouveau/nvif/user.c
new file mode 100644
index 000000000000..10da3cdca647
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvif/user.c
@@ -0,0 +1,64 @@
+/*
+ * 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 <nvif/user.h>
+#include <nvif/device.h>
+
+#include <nvif/class.h>
+
+void
+nvif_user_fini(struct nvif_device *device)
+{
+	if (device->user.func) {
+		nvif_object_fini(&device->user.object);
+		device->user.func = NULL;
+	}
+}
+
+int
+nvif_user_init(struct nvif_device *device)
+{
+	struct {
+		s32 oclass;
+		int version;
+		const struct nvif_user_func *func;
+	} users[] = {
+		{ VOLTA_USERMODE_A, -1, &nvif_userc361 },
+		{}
+	};
+	int cid, ret;
+
+	if (device->user.func)
+		return 0;
+
+	cid = nvif_mclass(&device->object, users);
+	if (cid < 0)
+		return cid;
+
+	ret = nvif_object_init(&device->object, 0, users[cid].oclass, NULL, 0,
+			       &device->user.object);
+	if (ret)
+		return ret;
+
+	nvif_object_map(&device->user.object, NULL, 0);
+	device->user.func = users[cid].func;
+	return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/nvif/userc361.c b/drivers/gpu/drm/nouveau/nvif/userc361.c
new file mode 100644
index 000000000000..19f9958e7e01
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvif/userc361.c
@@ -0,0 +1,33 @@
+/*
+ * 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 <nvif/user.h>
+
+static void
+nvif_userc361_doorbell(struct nvif_user *user, u32 token)
+{
+	nvif_wr32(&user->object, 0x90, token);
+}
+
+const struct nvif_user_func
+nvif_userc361 = {
+	.doorbell = nvif_userc361_doorbell,
+};