drm/nouveau: remove symlinks, move core/ to nvkm/ (no code changes)

The symlinks were annoying some people, and they're not used anywhere
else in the kernel tree.  The include directory structure has been
changed so that symlinks aren't needed anymore.

NVKM has been moved from core/ to nvkm/ to make it more obvious as to
what the directory is for, and as some minor prep for when NVKM gets
split out into its own module (virt) at a later date.

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

1 files changed, 532 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c b/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c
new file mode 100644
index 000000000000..bdfabb4a8dc9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/core/ioctl.c
@@ -0,0 +1,532 @@
+/*
+ * Copyright 2014 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.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+
+#include <core/object.h>
+#include <core/parent.h>
+#include <core/handle.h>
+#include <core/namedb.h>
+#include <core/client.h>
+#include <core/device.h>
+#include <core/ioctl.h>
+#include <core/event.h>
+
+#include <nvif/unpack.h>
+#include <nvif/ioctl.h>
+
+static int
+nvkm_ioctl_nop(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_nop none;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "nop size %d\n", size);
+	if (nvif_unvers(args->none)) {
+		nv_ioctl(object, "nop\n");
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_sclass(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_sclass_v0 v0;
+	} *args = data;
+	int ret;
+
+	if (!nv_iclass(object, NV_PARENT_CLASS)) {
+		nv_debug(object, "cannot have children (sclass)\n");
+		return -ENODEV;
+	}
+
+	nv_ioctl(object, "sclass size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, true)) {
+		nv_ioctl(object, "sclass vers %d count %d\n",
+			 args->v0.version, args->v0.count);
+		if (size == args->v0.count * sizeof(args->v0.oclass[0])) {
+			ret = nouveau_parent_lclass(object, args->v0.oclass,
+							    args->v0.count);
+			if (ret >= 0) {
+				args->v0.count = ret;
+				ret = 0;
+			}
+		} else {
+			ret = -EINVAL;
+		}
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_new(struct nouveau_handle *handle, void *data, u32 size)
+{
+	union {
+		struct nvif_ioctl_new_v0 v0;
+	} *args = data;
+	struct nouveau_client *client = nouveau_client(handle->object);
+	struct nouveau_object *engctx = NULL;
+	struct nouveau_object *object = NULL;
+	struct nouveau_parent *parent;
+	struct nouveau_object *engine;
+	struct nouveau_oclass *oclass;
+	u32 _handle, _oclass;
+	int ret;
+
+	nv_ioctl(client, "new size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, true)) {
+		_handle = args->v0.handle;
+		_oclass = args->v0.oclass;
+	} else
+		return ret;
+
+	nv_ioctl(client, "new vers %d handle %08x class %08x "
+			 "route %02x token %llx\n",
+		args->v0.version, _handle, _oclass,
+		args->v0.route, args->v0.token);
+
+	if (!nv_iclass(handle->object, NV_PARENT_CLASS)) {
+		nv_debug(handle->object, "cannot have children (ctor)\n");
+		ret = -ENODEV;
+		goto fail_class;
+	}
+
+	parent = nv_parent(handle->object);
+
+	/* check that parent supports the requested subclass */
+	ret = nouveau_parent_sclass(&parent->object, _oclass, &engine, &oclass);
+	if (ret) {
+		nv_debug(parent, "illegal class 0x%04x\n", _oclass);
+		goto fail_class;
+	}
+
+	/* make sure engine init has been completed *before* any objects
+	 * it controls are created - the constructors may depend on
+	 * state calculated at init (ie. default context construction)
+	 */
+	if (engine) {
+		ret = nouveau_object_inc(engine);
+		if (ret)
+			goto fail_class;
+	}
+
+	/* if engine requires it, create a context object to insert
+	 * between the parent and its children (eg. PGRAPH context)
+	 */
+	if (engine && nv_engine(engine)->cclass) {
+		ret = nouveau_object_ctor(&parent->object, engine,
+					  nv_engine(engine)->cclass,
+					  data, size, &engctx);
+		if (ret)
+			goto fail_engctx;
+	} else {
+		nouveau_object_ref(&parent->object, &engctx);
+	}
+
+	/* finally, create new object and bind it to its handle */
+	ret = nouveau_object_ctor(engctx, engine, oclass, data, size, &object);
+	client->data = object;
+	if (ret)
+		goto fail_ctor;
+
+	ret = nouveau_object_inc(object);
+	if (ret)
+		goto fail_init;
+
+	ret = nouveau_handle_create(&parent->object, handle->name,
+				    _handle, object, &handle);
+	if (ret)
+		goto fail_handle;
+
+	ret = nouveau_handle_init(handle);
+	handle->route = args->v0.route;
+	handle->token = args->v0.token;
+	if (ret)
+		nouveau_handle_destroy(handle);
+
+fail_handle:
+	nouveau_object_dec(object, false);
+fail_init:
+	nouveau_object_ref(NULL, &object);
+fail_ctor:
+	nouveau_object_ref(NULL, &engctx);
+fail_engctx:
+	if (engine)
+		nouveau_object_dec(engine, false);
+fail_class:
+	return ret;
+}
+
+static int
+nvkm_ioctl_del(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_del none;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "delete size %d\n", size);
+	if (nvif_unvers(args->none)) {
+		nv_ioctl(object, "delete\n");
+		nouveau_handle_fini(handle, false);
+		nouveau_handle_destroy(handle);
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_mthd(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	struct nouveau_ofuncs *ofuncs = object->oclass->ofuncs;
+	union {
+		struct nvif_ioctl_mthd_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "mthd size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, true)) {
+		nv_ioctl(object, "mthd vers %d mthd %02x\n",
+			 args->v0.version, args->v0.method);
+		if (ret = -ENODEV, ofuncs->mthd)
+			ret = ofuncs->mthd(object, args->v0.method, data, size);
+	}
+
+	return ret;
+}
+
+
+static int
+nvkm_ioctl_rd(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	struct nouveau_ofuncs *ofuncs = object->oclass->ofuncs;
+	union {
+		struct nvif_ioctl_rd_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "rd size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(object, "rd vers %d size %d addr %016llx\n",
+			args->v0.version, args->v0.size, args->v0.addr);
+		switch (args->v0.size) {
+		case 1:
+			if (ret = -ENODEV, ofuncs->rd08) {
+				args->v0.data = nv_ro08(object, args->v0.addr);
+				ret = 0;
+			}
+			break;
+		case 2:
+			if (ret = -ENODEV, ofuncs->rd16) {
+				args->v0.data = nv_ro16(object, args->v0.addr);
+				ret = 0;
+			}
+			break;
+		case 4:
+			if (ret = -ENODEV, ofuncs->rd32) {
+				args->v0.data = nv_ro32(object, args->v0.addr);
+				ret = 0;
+			}
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_wr(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	struct nouveau_ofuncs *ofuncs = object->oclass->ofuncs;
+	union {
+		struct nvif_ioctl_wr_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "wr size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(object, "wr vers %d size %d addr %016llx data %08x\n",
+			 args->v0.version, args->v0.size, args->v0.addr,
+			 args->v0.data);
+		switch (args->v0.size) {
+		case 1:
+			if (ret = -ENODEV, ofuncs->wr08) {
+				nv_wo08(object, args->v0.addr, args->v0.data);
+				ret = 0;
+			}
+			break;
+		case 2:
+			if (ret = -ENODEV, ofuncs->wr16) {
+				nv_wo16(object, args->v0.addr, args->v0.data);
+				ret = 0;
+			}
+			break;
+		case 4:
+			if (ret = -ENODEV, ofuncs->wr32) {
+				nv_wo32(object, args->v0.addr, args->v0.data);
+				ret = 0;
+			}
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_map(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	struct nouveau_ofuncs *ofuncs = object->oclass->ofuncs;
+	union {
+		struct nvif_ioctl_map_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "map size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(object, "map vers %d\n", args->v0.version);
+		if (ret = -ENODEV, ofuncs->map) {
+			ret = ofuncs->map(object, &args->v0.handle,
+						  &args->v0.length);
+		}
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_unmap(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_unmap none;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "unmap size %d\n", size);
+	if (nvif_unvers(args->none)) {
+		nv_ioctl(object, "unmap\n");
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_ntfy_new(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_object *object = handle->object;
+	struct nouveau_ofuncs *ofuncs = object->oclass->ofuncs;
+	union {
+		struct nvif_ioctl_ntfy_new_v0 v0;
+	} *args = data;
+	struct nvkm_event *event;
+	int ret;
+
+	nv_ioctl(object, "ntfy new size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, true)) {
+		nv_ioctl(object, "ntfy new vers %d event %02x\n",
+			 args->v0.version, args->v0.event);
+		if (ret = -ENODEV, ofuncs->ntfy)
+			ret = ofuncs->ntfy(object, args->v0.event, &event);
+		if (ret == 0) {
+			ret = nvkm_client_notify_new(object, event, data, size);
+			if (ret >= 0) {
+				args->v0.index = ret;
+				ret = 0;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_ntfy_del(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_client *client = nouveau_client(handle->object);
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_ntfy_del_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "ntfy del size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(object, "ntfy del vers %d index %d\n",
+			 args->v0.version, args->v0.index);
+		ret = nvkm_client_notify_del(client, args->v0.index);
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_ntfy_get(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_client *client = nouveau_client(handle->object);
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_ntfy_get_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "ntfy get size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(object, "ntfy get vers %d index %d\n",
+			 args->v0.version, args->v0.index);
+		ret = nvkm_client_notify_get(client, args->v0.index);
+	}
+
+	return ret;
+}
+
+static int
+nvkm_ioctl_ntfy_put(struct nouveau_handle *handle, void *data, u32 size)
+{
+	struct nouveau_client *client = nouveau_client(handle->object);
+	struct nouveau_object *object = handle->object;
+	union {
+		struct nvif_ioctl_ntfy_put_v0 v0;
+	} *args = data;
+	int ret;
+
+	nv_ioctl(object, "ntfy put size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nv_ioctl(object, "ntfy put vers %d index %d\n",
+			 args->v0.version, args->v0.index);
+		ret = nvkm_client_notify_put(client, args->v0.index);
+	}
+
+	return ret;
+}
+
+static struct {
+	int version;
+	int (*func)(struct nouveau_handle *, void *, u32);
+}
+nvkm_ioctl_v0[] = {
+	{ 0x00, nvkm_ioctl_nop },
+	{ 0x00, nvkm_ioctl_sclass },
+	{ 0x00, nvkm_ioctl_new },
+	{ 0x00, nvkm_ioctl_del },
+	{ 0x00, nvkm_ioctl_mthd },
+	{ 0x00, nvkm_ioctl_rd },
+	{ 0x00, nvkm_ioctl_wr },
+	{ 0x00, nvkm_ioctl_map },
+	{ 0x00, nvkm_ioctl_unmap },
+	{ 0x00, nvkm_ioctl_ntfy_new },
+	{ 0x00, nvkm_ioctl_ntfy_del },
+	{ 0x00, nvkm_ioctl_ntfy_get },
+	{ 0x00, nvkm_ioctl_ntfy_put },
+};
+
+static int
+nvkm_ioctl_path(struct nouveau_handle *parent, u32 type, u32 nr,
+		  u32 *path, void *data, u32 size,
+		  u8 owner, u8 *route, u64 *token)
+{
+	struct nouveau_handle *handle = parent;
+	struct nouveau_namedb *namedb;
+	struct nouveau_object *object;
+	int ret;
+
+	while ((object = parent->object), nr--) {
+		nv_ioctl(object, "path 0x%08x\n", path[nr]);
+		if (!nv_iclass(object, NV_PARENT_CLASS)) {
+			nv_debug(object, "cannot have children (path)\n");
+			return -EINVAL;
+		}
+
+		if (!(namedb = (void *)nv_pclass(object, NV_NAMEDB_CLASS)) ||
+		    !(handle = nouveau_namedb_get(namedb, path[nr]))) {
+			nv_debug(object, "handle 0x%08x not found\n", path[nr]);
+			return -ENOENT;
+		}
+		nouveau_namedb_put(handle);
+		parent = handle;
+	}
+
+	if (owner != NVIF_IOCTL_V0_OWNER_ANY &&
+	    owner != handle->route) {
+		nv_ioctl(object, "object route != owner\n");
+		return -EACCES;
+	}
+	*route = handle->route;
+	*token = handle->token;
+
+	if (ret = -EINVAL, type < ARRAY_SIZE(nvkm_ioctl_v0)) {
+		if (nvkm_ioctl_v0[type].version == 0) {
+			ret = nvkm_ioctl_v0[type].func(handle, data, size);
+		}
+	}
+
+	return ret;
+}
+
+int
+nvkm_ioctl(struct nouveau_client *client, bool supervisor,
+	   void *data, u32 size, void **hack)
+{
+	union {
+		struct nvif_ioctl_v0 v0;
+	} *args = data;
+	int ret;
+
+	client->super = supervisor;
+	nv_ioctl(client, "size %d\n", size);
+
+	if (nvif_unpack(args->v0, 0, 0, true)) {
+		nv_ioctl(client, "vers %d type %02x path %d owner %02x\n",
+			 args->v0.version, args->v0.type, args->v0.path_nr,
+			 args->v0.owner);
+		ret = nvkm_ioctl_path(client->root, args->v0.type,
+				      args->v0.path_nr, args->v0.path,
+				      data, size, args->v0.owner,
+				     &args->v0.route, &args->v0.token);
+	}
+
+	nv_ioctl(client, "return %d\n", ret);
+	if (hack) {
+		*hack = client->data;
+		client->data = NULL;
+	}
+	client->super = false;
+	return ret;
+}