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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ctxgm200.c (4228B)


      1/*
      2 * Copyright 2015 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 <bskeggs@redhat.com>
     23 */
     24#include "ctxgf100.h"
     25
     26/*******************************************************************************
     27 * PGRAPH context implementation
     28 ******************************************************************************/
     29
     30void
     31gm200_grctx_generate_r419a3c(struct gf100_gr *gr)
     32{
     33	struct nvkm_device *device = gr->base.engine.subdev.device;
     34	nvkm_mask(device, 0x419a3c, 0x00000014, 0x00000000);
     35}
     36
     37static void
     38gm200_grctx_generate_r418e94(struct gf100_gr *gr)
     39{
     40	struct nvkm_device *device = gr->base.engine.subdev.device;
     41	nvkm_mask(device, 0x418e94, 0xffffffff, 0xc4230000);
     42	nvkm_mask(device, 0x418e4c, 0xffffffff, 0x70000000);
     43}
     44
     45void
     46gm200_grctx_generate_smid_config(struct gf100_gr *gr)
     47{
     48	struct nvkm_device *device = gr->base.engine.subdev.device;
     49	const u32 dist_nr = DIV_ROUND_UP(gr->tpc_total, 4);
     50	u32 dist[TPC_MAX / 4] = {};
     51	u32 gpcs[GPC_MAX] = {};
     52	u8  sm, i;
     53
     54	for (sm = 0; sm < gr->sm_nr; sm++) {
     55		const u8 gpc = gr->sm[sm].gpc;
     56		const u8 tpc = gr->sm[sm].tpc;
     57		dist[sm / 4] |= ((gpc << 4) | tpc) << ((sm % 4) * 8);
     58		gpcs[gpc] |= sm << (tpc * 8);
     59	}
     60
     61	for (i = 0; i < dist_nr; i++)
     62		nvkm_wr32(device, 0x405b60 + (i * 4), dist[i]);
     63	for (i = 0; i < gr->gpc_nr; i++)
     64		nvkm_wr32(device, 0x405ba0 + (i * 4), gpcs[i]);
     65}
     66
     67void
     68gm200_grctx_generate_tpc_mask(struct gf100_gr *gr)
     69{
     70	u32 tmp, i;
     71	for (tmp = 0, i = 0; i < gr->gpc_nr; i++)
     72		tmp |= ((1 << gr->tpc_nr[i]) - 1) << (i * gr->func->tpc_nr);
     73	nvkm_wr32(gr->base.engine.subdev.device, 0x4041c4, tmp);
     74}
     75
     76void
     77gm200_grctx_generate_r406500(struct gf100_gr *gr)
     78{
     79	nvkm_wr32(gr->base.engine.subdev.device, 0x406500, 0x00000000);
     80}
     81
     82void
     83gm200_grctx_generate_dist_skip_table(struct gf100_gr *gr)
     84{
     85	struct nvkm_device *device = gr->base.engine.subdev.device;
     86	u32 data[8] = {};
     87	int gpc, ppc, i;
     88
     89	for (gpc = 0; gpc < gr->gpc_nr; gpc++) {
     90		for (ppc = 0; ppc < gr->ppc_nr[gpc]; ppc++) {
     91			u8 ppc_tpcs = gr->ppc_tpc_nr[gpc][ppc];
     92			u8 ppc_tpcm = gr->ppc_tpc_mask[gpc][ppc];
     93			while (ppc_tpcs-- > gr->ppc_tpc_min)
     94				ppc_tpcm &= ppc_tpcm - 1;
     95			ppc_tpcm ^= gr->ppc_tpc_mask[gpc][ppc];
     96			((u8 *)data)[gpc] |= ppc_tpcm;
     97		}
     98	}
     99
    100	for (i = 0; i < ARRAY_SIZE(data); i++)
    101		nvkm_wr32(device, 0x4064d0 + (i * 0x04), data[i]);
    102}
    103
    104const struct gf100_grctx_func
    105gm200_grctx = {
    106	.main  = gf100_grctx_generate_main,
    107	.unkn  = gk104_grctx_generate_unkn,
    108	.bundle = gm107_grctx_generate_bundle,
    109	.bundle_size = 0x3000,
    110	.bundle_min_gpm_fifo_depth = 0x180,
    111	.bundle_token_limit = 0x780,
    112	.pagepool = gm107_grctx_generate_pagepool,
    113	.pagepool_size = 0x20000,
    114	.attrib = gm107_grctx_generate_attrib,
    115	.attrib_nr_max = 0x600,
    116	.attrib_nr = 0x400,
    117	.alpha_nr_max = 0x1800,
    118	.alpha_nr = 0x1000,
    119	.sm_id = gm107_grctx_generate_sm_id,
    120	.rop_mapping = gf117_grctx_generate_rop_mapping,
    121	.dist_skip_table = gm200_grctx_generate_dist_skip_table,
    122	.r406500 = gm200_grctx_generate_r406500,
    123	.gpc_tpc_nr = gk104_grctx_generate_gpc_tpc_nr,
    124	.tpc_mask = gm200_grctx_generate_tpc_mask,
    125	.smid_config = gm200_grctx_generate_smid_config,
    126	.r418e94 = gm200_grctx_generate_r418e94,
    127	.r419a3c = gm200_grctx_generate_r419a3c,
    128};