cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gt215.c (2754B)

      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 "fuc/gt215.fuc3.h"
     26
     27#include <core/client.h>
     28#include <core/enum.h>
     29#include <core/gpuobj.h>
     30#include <engine/fifo.h>
     31
     32#include <nvif/class.h>
     33
     34static const struct nvkm_enum
     35gt215_ce_isr_error_name[] = {
     36	{ 0x0001, "ILLEGAL_MTHD" },
     37	{ 0x0002, "INVALID_ENUM" },
     38	{ 0x0003, "INVALID_BITFIELD" },
     39	{}
     40};
     41
     42void
     43gt215_ce_intr(struct nvkm_falcon *ce, struct nvkm_fifo_chan *chan)
     44{
     45	struct nvkm_subdev *subdev = &ce->engine.subdev;
     46	struct nvkm_device *device = subdev->device;
     47	const u32 base = subdev->inst * 0x1000;
     48	u32 ssta = nvkm_rd32(device, 0x104040 + base) & 0x0000ffff;
     49	u32 addr = nvkm_rd32(device, 0x104040 + base) >> 16;
     50	u32 mthd = (addr & 0x07ff) << 2;
     51	u32 subc = (addr & 0x3800) >> 11;
     52	u32 data = nvkm_rd32(device, 0x104044 + base);
     53	const struct nvkm_enum *en =
     54		nvkm_enum_find(gt215_ce_isr_error_name, ssta);
     55
     56	nvkm_error(subdev, "DISPATCH_ERROR %04x [%s] ch %d [%010llx %s] "
     57			   "subc %d mthd %04x data %08x\n", ssta,
     58		   en ? en->name : "", chan ? chan->chid : -1,
     59		   chan ? chan->inst->addr : 0,
     60		   chan ? chan->object.client->name : "unknown",
     61		   subc, mthd, data);
     62}
     63
     64static const struct nvkm_falcon_func
     65gt215_ce = {
     66	.code.data = gt215_ce_code,
     67	.code.size = sizeof(gt215_ce_code),
     68	.data.data = gt215_ce_data,
     69	.data.size = sizeof(gt215_ce_data),
     70	.intr = gt215_ce_intr,
     71	.sclass = {
     72		{ -1, -1, GT212_DMA },
     73		{}
     74	}
     75};
     76
     77int
     78gt215_ce_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
     79	     struct nvkm_engine **pengine)
     80{
     81	return nvkm_falcon_new_(&gt215_ce, device, type, -1,
     82				(device->chipset != 0xaf), 0x104000, pengine);
     83}