From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- .../gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c | 102 +++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 kernel/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c') diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c new file mode 100644 index 000000000..c0fdb89e7 --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk20a.c @@ -0,0 +1,102 @@ +/* + * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved. + * + * 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 AUTHORS OR COPYRIGHT HOLDERS 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 +#include + +struct gk20a_ibus_priv { + struct nvkm_ibus base; +}; + +static void +gk20a_ibus_init_priv_ring(struct gk20a_ibus_priv *priv) +{ + nv_mask(priv, 0x137250, 0x3f, 0); + + nv_mask(priv, 0x000200, 0x20, 0); + usleep_range(20, 30); + nv_mask(priv, 0x000200, 0x20, 0x20); + + nv_wr32(priv, 0x12004c, 0x4); + nv_wr32(priv, 0x122204, 0x2); + nv_rd32(priv, 0x122204); +} + +static void +gk20a_ibus_intr(struct nvkm_subdev *subdev) +{ + struct gk20a_ibus_priv *priv = (void *)subdev; + u32 status0 = nv_rd32(priv, 0x120058); + + if (status0 & 0x7) { + nv_debug(priv, "resetting priv ring\n"); + gk20a_ibus_init_priv_ring(priv); + } + + /* Acknowledge interrupt */ + nv_mask(priv, 0x12004c, 0x2, 0x2); + + if (!nv_wait(subdev, 0x12004c, 0x3f, 0x00)) + nv_warn(priv, "timeout waiting for ringmaster ack\n"); +} + +static int +gk20a_ibus_init(struct nvkm_object *object) +{ + struct gk20a_ibus_priv *priv = (void *)object; + int ret; + + ret = _nvkm_ibus_init(object); + if (ret) + return ret; + + gk20a_ibus_init_priv_ring(priv); + + return 0; +} + +static int +gk20a_ibus_ctor(struct nvkm_object *parent, struct nvkm_object *engine, + struct nvkm_oclass *oclass, void *data, u32 size, + struct nvkm_object **pobject) +{ + struct gk20a_ibus_priv *priv; + int ret; + + ret = nvkm_ibus_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + nv_subdev(priv)->intr = gk20a_ibus_intr; + return 0; +} + +struct nvkm_oclass +gk20a_ibus_oclass = { + .handle = NV_SUBDEV(IBUS, 0xea), + .ofuncs = &(struct nvkm_ofuncs) { + .ctor = gk20a_ibus_ctor, + .dtor = _nvkm_ibus_dtor, + .init = gk20a_ibus_init, + .fini = _nvkm_ibus_fini, + }, +}; -- cgit 1.2.3-korg