drivers/gpu/drm/nouveau/nvkm/subdev/ltc/gk104.c

   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
  26 static void
  27 gk104_ltc_init(struct nvkm_ltc *ltc)
  28 {
  29         struct nvkm_device *device = ltc->subdev.device;
  30         u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
  31
  32         nvkm_wr32(device, 0x17e8d8, ltc->ltc_nr);
  33         nvkm_wr32(device, 0x17e000, ltc->ltc_nr);
  34         nvkm_wr32(device, 0x17e8d4, ltc->tag_base);
  35         nvkm_mask(device, 0x17e8c0, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
  36 }
  37
  38 static const struct nvkm_ltc_func
  39 gk104_ltc = {
  40         .oneinit = gf100_ltc_oneinit,
  41         .init = gk104_ltc_init,
  42         .intr = gf100_ltc_intr,
  43         .cbc_clear = gf100_ltc_cbc_clear,
  44         .cbc_wait = gf100_ltc_cbc_wait,
  45         .zbc = 16,
  46         .zbc_clear_color = gf100_ltc_zbc_clear_color,
  47         .zbc_clear_depth = gf100_ltc_zbc_clear_depth,
  48 };
  49
  50 int
  51 gk104_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
  52 {
  53         return nvkm_ltc_new_(&gk104_ltc, device, index, pltc);
  54 }