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

nv04.c (2393B)

      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 "priv.h"
     25#include "head.h"
     26
     27static const struct nvkm_disp_oclass *
     28nv04_disp_root(struct nvkm_disp *disp)
     29{
     30	return &nv04_disp_root_oclass;
     31}
     32
     33static void
     34nv04_disp_intr(struct nvkm_disp *disp)
     35{
     36	struct nvkm_subdev *subdev = &disp->engine.subdev;
     37	struct nvkm_device *device = subdev->device;
     38	u32 crtc0 = nvkm_rd32(device, 0x600100);
     39	u32 crtc1 = nvkm_rd32(device, 0x602100);
     40	u32 pvideo;
     41
     42	if (crtc0 & 0x00000001) {
     43		nvkm_disp_vblank(disp, 0);
     44		nvkm_wr32(device, 0x600100, 0x00000001);
     45	}
     46
     47	if (crtc1 & 0x00000001) {
     48		nvkm_disp_vblank(disp, 1);
     49		nvkm_wr32(device, 0x602100, 0x00000001);
     50	}
     51
     52	if (device->chipset >= 0x10 && device->chipset <= 0x40) {
     53		pvideo = nvkm_rd32(device, 0x8100);
     54		if (pvideo & ~0x11)
     55			nvkm_info(subdev, "PVIDEO intr: %08x\n", pvideo);
     56		nvkm_wr32(device, 0x8100, pvideo);
     57	}
     58}
     59
     60static const struct nvkm_disp_func
     61nv04_disp = {
     62	.intr = nv04_disp_intr,
     63	.root = nv04_disp_root,
     64};
     65
     66int
     67nv04_disp_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
     68	      struct nvkm_disp **pdisp)
     69{
     70	int ret, i;
     71
     72	ret = nvkm_disp_new_(&nv04_disp, device, type, inst, pdisp);
     73	if (ret)
     74		return ret;
     75
     76	for (i = 0; i < 2; i++) {
     77		ret = nv04_head_new(*pdisp, i);
     78		if (ret)
     79			return ret;
     80	}
     81
     82	return 0;
     83}