drivers/gpu/drm/nouveau/nvc0_fence.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 "nouveau_drv.h"
  25 #include "nouveau_dma.h"
  26 #include "nouveau_fence.h"
  27
  28 #include "nv50_display.h"
  29
  30 #include <nvif/push906f.h>
  31
  32 #include <nvhw/class/cl906f.h>
  33
  34 static int
  35 nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
  36 {
  37         struct nvif_push *push = chan->chan.push;
  38         int ret = PUSH_WAIT(push, 6);
  39         if (ret == 0) {
  40                 PUSH_MTHD(push, NV906F, SEMAPHOREA,
  41                           NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
  42
  43                                         SEMAPHOREB, lower_32_bits(virtual),
  44                                         SEMAPHOREC, sequence,
  45
  46                                         SEMAPHORED,
  47                           NVDEF(NV906F, SEMAPHORED, OPERATION, RELEASE) |
  48                           NVDEF(NV906F, SEMAPHORED, RELEASE_WFI, EN) |
  49                           NVDEF(NV906F, SEMAPHORED, RELEASE_SIZE, 16BYTE),
  50
  51                                         NON_STALL_INTERRUPT, 0);
  52                 PUSH_KICK(push);
  53         }
  54         return ret;
  55 }
  56
  57 static int
  58 nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
  59 {
  60         struct nvif_push *push = chan->chan.push;
  61         int ret = PUSH_WAIT(push, 5);
  62         if (ret == 0) {
  63                 PUSH_MTHD(push, NV906F, SEMAPHOREA,
  64                           NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
  65
  66                                         SEMAPHOREB, lower_32_bits(virtual),
  67                                         SEMAPHOREC, sequence,
  68
  69                                         SEMAPHORED,
  70                           NVDEF(NV906F, SEMAPHORED, OPERATION, ACQ_GEQ) |
  71                           NVDEF(NV906F, SEMAPHORED, ACQUIRE_SWITCH, ENABLED));
  72                 PUSH_KICK(push);
  73         }
  74         return ret;
  75 }
  76
  77 static int
  78 nvc0_fence_context_new(struct nouveau_channel *chan)
  79 {
  80         int ret = nv84_fence_context_new(chan);
  81         if (ret == 0) {
  82                 struct nv84_fence_chan *fctx = chan->fence;
  83                 fctx->base.emit32 = nvc0_fence_emit32;
  84                 fctx->base.sync32 = nvc0_fence_sync32;
  85         }
  86         return ret;
  87 }
  88
  89 int
  90 nvc0_fence_create(struct nouveau_drm *drm)
  91 {
  92         int ret = nv84_fence_create(drm);
  93         if (ret == 0) {
  94                 struct nv84_fence_priv *priv = drm->fence;
  95                 priv->base.context_new = nvc0_fence_context_new;
  96         }
  97         return ret;
  98 }