drm/nouveau/sec: separate from cipher (formerly crypt)

Switch to NVIDIA's name for the device.

The namespace of NVKM is being changed to nvkm_ instead of nouveau_,
which will be used for the DRM part of the driver.  This is being
done in order to make it very clear as to what part of the driver a
given symbol belongs to, and as a minor step towards splitting the
DRM driver out to be able to stand on its own (for virt).

Because there's already a large amount of churn here anyway, this is
as good a time as any to also switch to NVIDIA's device and chipset
naming to ease collaboration with them.

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

2 files changed, 189 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/cipher/Kbuild b/drivers/gpu/drm/nouveau/nvkm/engine/cipher/Kbuild
new file mode 100644
index 000000000000..07cc2150463b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/cipher/Kbuild
@@ -0,0 +1 @@
+nvkm-y += nvkm/engine/cipher/nv84.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/cipher/nv84.c b/drivers/gpu/drm/nouveau/nvkm/engine/cipher/nv84.c
new file mode 100644
index 000000000000..d4ecd91ccbe6
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/cipher/nv84.c
@@ -0,0 +1,188 @@
+/*
+ * Copyright 2012 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
+ */
+
+#include <core/client.h>
+#include <core/os.h>
+#include <core/enum.h>
+#include <core/engctx.h>
+#include <core/gpuobj.h>
+
+#include <subdev/fb.h>
+
+#include <engine/fifo.h>
+#include <engine/cipher.h>
+
+struct nv84_cipher_priv {
+	struct nouveau_engine base;
+};
+
+/*******************************************************************************
+ * Crypt object classes
+ ******************************************************************************/
+
+static int
+nv84_cipher_object_ctor(struct nouveau_object *parent,
+		       struct nouveau_object *engine,
+		       struct nouveau_oclass *oclass, void *data, u32 size,
+		       struct nouveau_object **pobject)
+{
+	struct nouveau_gpuobj *obj;
+	int ret;
+
+	ret = nouveau_gpuobj_create(parent, engine, oclass, 0, parent,
+				    16, 16, 0, &obj);
+	*pobject = nv_object(obj);
+	if (ret)
+		return ret;
+
+	nv_wo32(obj, 0x00, nv_mclass(obj));
+	nv_wo32(obj, 0x04, 0x00000000);
+	nv_wo32(obj, 0x08, 0x00000000);
+	nv_wo32(obj, 0x0c, 0x00000000);
+	return 0;
+}
+
+static struct nouveau_ofuncs
+nv84_cipher_ofuncs = {
+	.ctor = nv84_cipher_object_ctor,
+	.dtor = _nouveau_gpuobj_dtor,
+	.init = _nouveau_gpuobj_init,
+	.fini = _nouveau_gpuobj_fini,
+	.rd32 = _nouveau_gpuobj_rd32,
+	.wr32 = _nouveau_gpuobj_wr32,
+};
+
+static struct nouveau_oclass
+nv84_cipher_sclass[] = {
+	{ 0x74c1, &nv84_cipher_ofuncs },
+	{}
+};
+
+/*******************************************************************************
+ * PCIPHER context
+ ******************************************************************************/
+
+static struct nouveau_oclass
+nv84_cipher_cclass = {
+	.handle = NV_ENGCTX(CIPHER, 0x84),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = _nouveau_engctx_ctor,
+		.dtor = _nouveau_engctx_dtor,
+		.init = _nouveau_engctx_init,
+		.fini = _nouveau_engctx_fini,
+		.rd32 = _nouveau_engctx_rd32,
+		.wr32 = _nouveau_engctx_wr32,
+	},
+};
+
+/*******************************************************************************
+ * PCIPHER engine/subdev functions
+ ******************************************************************************/
+
+static const struct nouveau_bitfield nv84_cipher_intr_mask[] = {
+	{ 0x00000001, "INVALID_STATE" },
+	{ 0x00000002, "ILLEGAL_MTHD" },
+	{ 0x00000004, "ILLEGAL_CLASS" },
+	{ 0x00000080, "QUERY" },
+	{ 0x00000100, "FAULT" },
+	{}
+};
+
+static void
+nv84_cipher_intr(struct nouveau_subdev *subdev)
+{
+	struct nouveau_fifo *pfifo = nouveau_fifo(subdev);
+	struct nouveau_engine *engine = nv_engine(subdev);
+	struct nouveau_object *engctx;
+	struct nv84_cipher_priv *priv = (void *)subdev;
+	u32 stat = nv_rd32(priv, 0x102130);
+	u32 mthd = nv_rd32(priv, 0x102190);
+	u32 data = nv_rd32(priv, 0x102194);
+	u32 inst = nv_rd32(priv, 0x102188) & 0x7fffffff;
+	int chid;
+
+	engctx = nouveau_engctx_get(engine, inst);
+	chid   = pfifo->chid(pfifo, engctx);
+
+	if (stat) {
+		nv_error(priv, "%s", "");
+		nouveau_bitfield_print(nv84_cipher_intr_mask, stat);
+		pr_cont(" ch %d [0x%010llx %s] mthd 0x%04x data 0x%08x\n",
+		       chid, (u64)inst << 12, nouveau_client_name(engctx),
+		       mthd, data);
+	}
+
+	nv_wr32(priv, 0x102130, stat);
+	nv_wr32(priv, 0x10200c, 0x10);
+
+	nouveau_engctx_put(engctx);
+}
+
+static int
+nv84_cipher_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+	       struct nouveau_oclass *oclass, void *data, u32 size,
+	       struct nouveau_object **pobject)
+{
+	struct nv84_cipher_priv *priv;
+	int ret;
+
+	ret = nouveau_engine_create(parent, engine, oclass, true,
+				    "PCIPHER", "cipher", &priv);
+	*pobject = nv_object(priv);
+	if (ret)
+		return ret;
+
+	nv_subdev(priv)->unit = 0x00004000;
+	nv_subdev(priv)->intr = nv84_cipher_intr;
+	nv_engine(priv)->cclass = &nv84_cipher_cclass;
+	nv_engine(priv)->sclass = nv84_cipher_sclass;
+	return 0;
+}
+
+static int
+nv84_cipher_init(struct nouveau_object *object)
+{
+	struct nv84_cipher_priv *priv = (void *)object;
+	int ret;
+
+	ret = nouveau_engine_init(&priv->base);
+	if (ret)
+		return ret;
+
+	nv_wr32(priv, 0x102130, 0xffffffff);
+	nv_wr32(priv, 0x102140, 0xffffffbf);
+	nv_wr32(priv, 0x10200c, 0x00000010);
+	return 0;
+}
+
+struct nouveau_oclass
+nv84_cipher_oclass = {
+	.handle = NV_ENGINE(CIPHER, 0x84),
+	.ofuncs = &(struct nouveau_ofuncs) {
+		.ctor = nv84_cipher_ctor,
+		.dtor = _nouveau_engine_dtor,
+		.init = nv84_cipher_init,
+		.fini = _nouveau_engine_fini,
+	},
+};