cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

wimmgv100.c (2873B)

      1/*
      2 * Copyright 2018 Red Hat Inc.
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a
      5 * copy of this software and associated documentation files (the "Software"),
      6 * to deal in the Software without restriction, including without limitation
      7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8 * and/or sell copies of the Software, and to permit persons to whom the
      9 * Software is furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice shall be included in
     12 * all copies or substantial portions of the Software.
     13 *
     14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     20 * OTHER DEALINGS IN THE SOFTWARE.
     21 */
     22#include "channv50.h"
     23
     24#include <core/client.h>
     25
     26#include <nvif/clc37b.h>
     27#include <nvif/unpack.h>
     28
     29static void
     30gv100_disp_wimm_intr(struct nv50_disp_chan *chan, bool en)
     31{
     32	struct nvkm_device *device = chan->disp->base.engine.subdev.device;
     33	const u32 mask = 0x00000001 << chan->head;
     34	const u32 data = en ? mask : 0;
     35	nvkm_mask(device, 0x611da8, mask, data);
     36}
     37
     38static const struct nv50_disp_chan_func
     39gv100_disp_wimm = {
     40	.init = gv100_disp_dmac_init,
     41	.fini = gv100_disp_dmac_fini,
     42	.intr = gv100_disp_wimm_intr,
     43	.user = gv100_disp_chan_user,
     44};
     45
     46static int
     47gv100_disp_wimm_new_(const struct nv50_disp_chan_func *func,
     48		     const struct nv50_disp_chan_mthd *mthd,
     49		     struct nv50_disp *disp, int chid,
     50		     const struct nvkm_oclass *oclass, void *argv, u32 argc,
     51		     struct nvkm_object **pobject)
     52{
     53	union {
     54		struct nvc37b_window_imm_channel_dma_v0 v0;
     55	} *args = argv;
     56	struct nvkm_object *parent = oclass->parent;
     57	int wndw, ret = -ENOSYS;
     58	u64 push;
     59
     60	nvif_ioctl(parent, "create window imm channel dma size %d\n", argc);
     61	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
     62		nvif_ioctl(parent, "create window imm channel dma vers %d "
     63				   "pushbuf %016llx index %d\n",
     64			   args->v0.version, args->v0.pushbuf, args->v0.index);
     65		if (!(disp->wndw.mask & BIT(args->v0.index)))
     66			return -EINVAL;
     67		push = args->v0.pushbuf;
     68		wndw = args->v0.index;
     69	} else
     70		return ret;
     71
     72	return nv50_disp_dmac_new_(func, mthd, disp, chid + wndw,
     73				   wndw, push, oclass, pobject);
     74}
     75
     76int
     77gv100_disp_wimm_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
     78		    struct nv50_disp *disp, struct nvkm_object **pobject)
     79{
     80	return gv100_disp_wimm_new_(&gv100_disp_wimm, NULL, disp, 33,
     81				    oclass, argv, argc, pobject);
     82}