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

wimmc37b.c (2824B)

      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 "wimm.h"
     23#include "atom.h"
     24#include "wndw.h"
     25
     26#include <nvif/clc37b.h>
     27#include <nvif/pushc37b.h>
     28
     29#include <nvhw/class/clc37b.h>
     30
     31static int
     32wimmc37b_update(struct nv50_wndw *wndw, u32 *interlock)
     33{
     34	struct nvif_push *push = wndw->wimm.push;
     35	int ret;
     36
     37	if ((ret = PUSH_WAIT(push, 2)))
     38		return ret;
     39
     40	PUSH_MTHD(push, NVC37B, UPDATE, 0x00000001 |
     41		  NVVAL(NVC37B, UPDATE, INTERLOCK_WITH_WINDOW,
     42			!!(interlock[NV50_DISP_INTERLOCK_WNDW] & wndw->interlock.data)));
     43	return PUSH_KICK(push);
     44}
     45
     46static int
     47wimmc37b_point(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
     48{
     49	struct nvif_push *push = wndw->wimm.push;
     50	int ret;
     51
     52	if ((ret = PUSH_WAIT(push, 2)))
     53		return ret;
     54
     55	PUSH_MTHD(push, NVC37B, SET_POINT_OUT(0),
     56		  NVVAL(NVC37B, SET_POINT_OUT, X, asyw->point.x) |
     57		  NVVAL(NVC37B, SET_POINT_OUT, Y, asyw->point.y));
     58	return 0;
     59}
     60
     61static const struct nv50_wimm_func
     62wimmc37b = {
     63	.point = wimmc37b_point,
     64	.update = wimmc37b_update,
     65};
     66
     67static int
     68wimmc37b_init_(const struct nv50_wimm_func *func, struct nouveau_drm *drm,
     69	       s32 oclass, struct nv50_wndw *wndw)
     70{
     71	struct nvc37b_window_imm_channel_dma_v0 args = {
     72		.pushbuf = 0xb0007b00 | wndw->id,
     73		.index = wndw->id,
     74	};
     75	struct nv50_disp *disp = nv50_disp(drm->dev);
     76	int ret;
     77
     78	ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
     79			       &oclass, 0, &args, sizeof(args), -1,
     80			       &wndw->wimm);
     81	if (ret) {
     82		NV_ERROR(drm, "wimm%04x allocation failed: %d\n", oclass, ret);
     83		return ret;
     84	}
     85
     86	wndw->interlock.wimm = wndw->interlock.data;
     87	wndw->immd = func;
     88	return 0;
     89}
     90
     91int
     92wimmc37b_init(struct nouveau_drm *drm, s32 oclass, struct nv50_wndw *wndw)
     93{
     94	return wimmc37b_init_(&wimmc37b, drm, oclass, wndw);
     95}