Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nouveau_nvif.c

diff --git a/kernel/drivers/gpu/drm/nouveau/nouveau_nvif.c b/kernel/drivers/gpu/drm/nouveau/nouveau_nvif.c
new file mode 100644 (file)
index 0000000..ca0ad9d
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nouveau_nvif.c
@@ -0,0 +1,136 @@
+/*
+ * 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>
+ */
+
+/*******************************************************************************
+ * NVIF client driver - NVKM directly linked
+ ******************************************************************************/
+
+#include <core/client.h>
+#include <core/notify.h>
+#include <core/ioctl.h>
+
+#include <nvif/client.h>
+#include <nvif/driver.h>
+#include <nvif/notify.h>
+#include <nvif/event.h>
+#include <nvif/ioctl.h>
+
+#include "nouveau_drm.h"
+#include "nouveau_usif.h"
+
+static void
+nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size)
+{
+       iounmap(ptr);
+}
+
+static void __iomem *
+nvkm_client_map(void *priv, u64 handle, u32 size)
+{
+       return ioremap(handle, size);
+}
+
+static int
+nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack)
+{
+       return nvkm_ioctl(priv, super, data, size, hack);
+}
+
+static int
+nvkm_client_resume(void *priv)
+{
+       return nvkm_client_init(priv);
+}
+
+static int
+nvkm_client_suspend(void *priv)
+{
+       return nvkm_client_fini(priv, true);
+}
+
+static void
+nvkm_client_driver_fini(void *priv)
+{
+       struct nvkm_object *client = priv;
+       nvkm_client_fini(nv_client(client), false);
+       atomic_set(&client->refcount, 1);
+       nvkm_object_ref(NULL, &client);
+}
+
+static int
+nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size)
+{
+       const union {
+               struct nvif_notify_req_v0 v0;
+       } *args = header;
+       u8 route;
+
+       if (length == sizeof(args->v0) && args->v0.version == 0) {
+               route = args->v0.route;
+       } else {
+               WARN_ON(1);
+               return NVKM_NOTIFY_DROP;
+       }
+
+       switch (route) {
+       case NVDRM_NOTIFY_NVIF:
+               return nvif_notify(header, length, data, size);
+       case NVDRM_NOTIFY_USIF:
+               return usif_notify(header, length, data, size);
+       default:
+               WARN_ON(1);
+               break;
+       }
+
+       return NVKM_NOTIFY_DROP;
+}
+
+static int
+nvkm_client_driver_init(const char *name, u64 device, const char *cfg,
+                       const char *dbg, void **ppriv)
+{
+       struct nvkm_client *client;
+       int ret;
+
+       ret = nvkm_client_create(name, device, cfg, dbg, &client);
+       *ppriv = client;
+       if (ret)
+               return ret;
+
+       client->ntfy = nvkm_client_ntfy;
+       return 0;
+}
+
+const struct nvif_driver
+nvif_driver_nvkm = {
+       .name = "nvkm",
+       .init = nvkm_client_driver_init,
+       .fini = nvkm_client_driver_fini,
+       .suspend = nvkm_client_suspend,
+       .resume = nvkm_client_resume,
+       .ioctl = nvkm_client_ioctl,
+       .map = nvkm_client_map,
+       .unmap = nvkm_client_unmap,
+       .keep = false,
+};