LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gp100.c

   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
  26static void
  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
  41static int
  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 nvkm_mm_init(&ltc->tags, 0, 0, 1);
  49}
  50
  51static void
  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, int index, struct nvkm_ltc **pltc)
  73{
  74        return nvkm_ltc_new_(&gp100_ltc, device, index, pltc);
  75}
  76