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

hdmigf119.c (3337B)

      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 "hdmi.h"
     25
     26void
     27gf119_hdmi_ctrl(struct nvkm_ior *ior, int head, bool enable, u8 max_ac_packet,
     28		u8 rekey, u8 *avi, u8 avi_size, u8 *vendor, u8 vendor_size)
     29{
     30	struct nvkm_device *device = ior->disp->engine.subdev.device;
     31	const u32 ctrl = 0x40000000 * enable |
     32			 max_ac_packet << 16 |
     33			 rekey;
     34	const u32 hoff = head * 0x800;
     35	struct packed_hdmi_infoframe avi_infoframe;
     36	struct packed_hdmi_infoframe vendor_infoframe;
     37
     38	pack_hdmi_infoframe(&avi_infoframe, avi, avi_size);
     39	pack_hdmi_infoframe(&vendor_infoframe, vendor, vendor_size);
     40
     41	if (!(ctrl & 0x40000000)) {
     42		nvkm_mask(device, 0x616798 + hoff, 0x40000000, 0x00000000);
     43		nvkm_mask(device, 0x616730 + hoff, 0x00000001, 0x00000000);
     44		nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);
     45		nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000000);
     46		return;
     47	}
     48
     49	/* AVI InfoFrame */
     50	nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000000);
     51	if (avi_size) {
     52		nvkm_wr32(device, 0x61671c + hoff, avi_infoframe.header);
     53		nvkm_wr32(device, 0x616720 + hoff, avi_infoframe.subpack0_low);
     54		nvkm_wr32(device, 0x616724 + hoff, avi_infoframe.subpack0_high);
     55		nvkm_wr32(device, 0x616728 + hoff, avi_infoframe.subpack1_low);
     56		nvkm_wr32(device, 0x61672c + hoff, avi_infoframe.subpack1_high);
     57		nvkm_mask(device, 0x616714 + hoff, 0x00000001, 0x00000001);
     58	}
     59
     60	/* GENERIC(?) / Vendor InfoFrame? */
     61	nvkm_mask(device, 0x616730 + hoff, 0x00010001, 0x00010000);
     62	if (vendor_size) {
     63		/*
     64		 * These appear to be the audio infoframe registers,
     65		 * but no other set of infoframe registers has yet
     66		 * been found.
     67		 */
     68		nvkm_wr32(device, 0x616738 + hoff, vendor_infoframe.header);
     69		nvkm_wr32(device, 0x61673c + hoff, vendor_infoframe.subpack0_low);
     70		nvkm_wr32(device, 0x616740 + hoff, vendor_infoframe.subpack0_high);
     71		/* Is there a second (or further?) set of subpack registers here? */
     72		nvkm_mask(device, 0x616730 + hoff, 0x00000001, 0x00000001);
     73	}
     74
     75	/* ??? InfoFrame? */
     76	nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000000);
     77	nvkm_wr32(device, 0x6167ac + hoff, 0x00000010);
     78	nvkm_mask(device, 0x6167a4 + hoff, 0x00000001, 0x00000001);
     79
     80	/* HDMI_CTRL */
     81	nvkm_mask(device, 0x616798 + hoff, 0x401f007f, ctrl);
     82}