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

gp100.c (2329B)


      1/*
      2 * Copyright 2016 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
     26void
     27gp100_ltc_intr(struct nvkm_ltc *ltc)
     28{
     29	struct nvkm_device *device = ltc->subdev.device;
     30	u32 mask;
     31
     32	mask = nvkm_rd32(device, 0x0001c0);
     33	while (mask) {
     34		u32 s, c = __ffs(mask);
     35		for (s = 0; s < ltc->lts_nr; s++)
     36			gm107_ltc_intr_lts(ltc, c, s);
     37		mask &= ~(1 << c);
     38	}
     39}
     40
     41int
     42gp100_ltc_oneinit(struct nvkm_ltc *ltc)
     43{
     44	struct nvkm_device *device = ltc->subdev.device;
     45	ltc->ltc_nr = nvkm_rd32(device, 0x12006c);
     46	ltc->lts_nr = nvkm_rd32(device, 0x17e280) >> 28;
     47	/*XXX: tagram allocation - TBD */
     48	return 0;
     49}
     50
     51void
     52gp100_ltc_init(struct nvkm_ltc *ltc)
     53{
     54	/*XXX: PMU LS call to setup tagram address */
     55}
     56
     57static const struct nvkm_ltc_func
     58gp100_ltc = {
     59	.oneinit = gp100_ltc_oneinit,
     60	.init = gp100_ltc_init,
     61	.intr = gp100_ltc_intr,
     62	.cbc_clear = gm107_ltc_cbc_clear,
     63	.cbc_wait = gm107_ltc_cbc_wait,
     64	.zbc = 16,
     65	.zbc_clear_color = gm107_ltc_zbc_clear_color,
     66	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
     67	.invalidate = gf100_ltc_invalidate,
     68	.flush = gf100_ltc_flush,
     69};
     70
     71int
     72gp100_ltc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
     73	      struct nvkm_ltc **pltc)
     74{
     75	return nvkm_ltc_new_(&gp100_ltc, device, type, inst, pltc);
     76}