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
  26 void
  27 gp100_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
  41 int
  42 gp100_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
  51 void
  52 gp100_ltc_init(struct nvkm_ltc *ltc)
  53 {
  54         /*XXX: PMU LS call to setup tagram address */
  55 }
  56
  57 static const struct nvkm_ltc_func
  58 gp100_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
  71 int
  72 gp100_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
  73 {
  74         return nvkm_ltc_new_(&gp100_ltc, device, index, pltc);
  75 }