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

nvc0_fence.c (2918B)

      1/*
      2 * Copyright 2012 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 * Authors: Ben Skeggs
     23 */
     24#include "nouveau_drv.h"
     25#include "nouveau_dma.h"
     26#include "nouveau_fence.h"
     27
     28#include "nv50_display.h"
     29
     30#include <nvif/push906f.h>
     31
     32#include <nvhw/class/cl906f.h>
     33
     34static int
     35nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
     36{
     37	struct nvif_push *push = chan->chan.push;
     38	int ret = PUSH_WAIT(push, 6);
     39	if (ret == 0) {
     40		PUSH_MTHD(push, NV906F, SEMAPHOREA,
     41			  NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
     42
     43					SEMAPHOREB, lower_32_bits(virtual),
     44					SEMAPHOREC, sequence,
     45
     46					SEMAPHORED,
     47			  NVDEF(NV906F, SEMAPHORED, OPERATION, RELEASE) |
     48			  NVDEF(NV906F, SEMAPHORED, RELEASE_WFI, EN) |
     49			  NVDEF(NV906F, SEMAPHORED, RELEASE_SIZE, 16BYTE),
     50
     51					NON_STALL_INTERRUPT, 0);
     52		PUSH_KICK(push);
     53	}
     54	return ret;
     55}
     56
     57static int
     58nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
     59{
     60	struct nvif_push *push = chan->chan.push;
     61	int ret = PUSH_WAIT(push, 5);
     62	if (ret == 0) {
     63		PUSH_MTHD(push, NV906F, SEMAPHOREA,
     64			  NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
     65
     66					SEMAPHOREB, lower_32_bits(virtual),
     67					SEMAPHOREC, sequence,
     68
     69					SEMAPHORED,
     70			  NVDEF(NV906F, SEMAPHORED, OPERATION, ACQ_GEQ) |
     71			  NVDEF(NV906F, SEMAPHORED, ACQUIRE_SWITCH, ENABLED));
     72		PUSH_KICK(push);
     73	}
     74	return ret;
     75}
     76
     77static int
     78nvc0_fence_context_new(struct nouveau_channel *chan)
     79{
     80	int ret = nv84_fence_context_new(chan);
     81	if (ret == 0) {
     82		struct nv84_fence_chan *fctx = chan->fence;
     83		fctx->base.emit32 = nvc0_fence_emit32;
     84		fctx->base.sync32 = nvc0_fence_sync32;
     85	}
     86	return ret;
     87}
     88
     89int
     90nvc0_fence_create(struct nouveau_drm *drm)
     91{
     92	int ret = nv84_fence_create(drm);
     93	if (ret == 0) {
     94		struct nv84_fence_priv *priv = drm->fence;
     95		priv->base.context_new = nvc0_fence_context_new;
     96	}
     97	return ret;
     98}