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-rw-r--r--drivers/gpu/drm/nouveau/core/core/ioctl.c531
1 files changed, 531 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/core/ioctl.c b/drivers/gpu/drm/nouveau/core/core/ioctl.c
new file mode 100644
index 000000000000..f7e19bfb489c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/core/ioctl.c
@@ -0,0 +1,531 @@
+/*
+ * 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 *parent, void *data, u32 size)
+{
+ union {
+ struct nvif_ioctl_new_v0 v0;
+ } *args = data;
+ struct nouveau_client *client = nouveau_client(parent->object);
+ struct nouveau_object *engctx = NULL;
+ struct nouveau_object *object = NULL;
+ struct nouveau_object *engine;
+ struct nouveau_oclass *oclass;
+ struct nouveau_handle *handle;
+ 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(parent->object, NV_PARENT_CLASS)) {
+ nv_debug(parent->object, "cannot have children (ctor)\n");
+ ret = -ENODEV;
+ goto fail_class;
+ }
+
+ /* check that parent supports the requested subclass */
+ ret = nouveau_parent_sclass(parent->object, _oclass, &engine, &oclass);
+ if (ret) {
+ nv_debug(parent->object, "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, parent->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_client *client = nouveau_client(handle->object);
+ 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(client, 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;
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.