drm/nouveau/nvc0_fence.c

0001 /*
0002  * Copyright 2012 Red Hat Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Ben Skeggs
0023  */
0024 #include "nouveau_drv.h"
0025 #include "nouveau_dma.h"
0026 #include "nouveau_fence.h"
0027
0028 #include "nv50_display.h"
0029
0030 #include <nvif/push906f.h>
0031
0032 #include <nvhw/class/cl906f.h>
0033
0034 static int
0035 nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
0036 {
0037     struct nvif_push *push = chan->chan.push;
0038     int ret = PUSH_WAIT(push, 6);
0039     if (ret == 0) {
0040         PUSH_MTHD(push, NV906F, SEMAPHOREA,
0041               NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
0042
0043                     SEMAPHOREB, lower_32_bits(virtual),
0044                     SEMAPHOREC, sequence,
0045
0046                     SEMAPHORED,
0047               NVDEF(NV906F, SEMAPHORED, OPERATION, RELEASE) |
0048               NVDEF(NV906F, SEMAPHORED, RELEASE_WFI, EN) |
0049               NVDEF(NV906F, SEMAPHORED, RELEASE_SIZE, 16BYTE),
0050
0051                     NON_STALL_INTERRUPT, 0);
0052         PUSH_KICK(push);
0053     }
0054     return ret;
0055 }
0056
0057 static int
0058 nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
0059 {
0060     struct nvif_push *push = chan->chan.push;
0061     int ret = PUSH_WAIT(push, 5);
0062     if (ret == 0) {
0063         PUSH_MTHD(push, NV906F, SEMAPHOREA,
0064               NVVAL(NV906F, SEMAPHOREA, OFFSET_UPPER, upper_32_bits(virtual)),
0065
0066                     SEMAPHOREB, lower_32_bits(virtual),
0067                     SEMAPHOREC, sequence,
0068
0069                     SEMAPHORED,
0070               NVDEF(NV906F, SEMAPHORED, OPERATION, ACQ_GEQ) |
0071               NVDEF(NV906F, SEMAPHORED, ACQUIRE_SWITCH, ENABLED));
0072         PUSH_KICK(push);
0073     }
0074     return ret;
0075 }
0076
0077 static int
0078 nvc0_fence_context_new(struct nouveau_channel *chan)
0079 {
0080     int ret = nv84_fence_context_new(chan);
0081     if (ret == 0) {
0082         struct nv84_fence_chan *fctx = chan->fence;
0083         fctx->base.emit32 = nvc0_fence_emit32;
0084         fctx->base.sync32 = nvc0_fence_sync32;
0085     }
0086     return ret;
0087 }
0088
0089 int
0090 nvc0_fence_create(struct nouveau_drm *drm)
0091 {
0092     int ret = nv84_fence_create(drm);
0093     if (ret == 0) {
0094         struct nv84_fence_priv *priv = drm->fence;
0095         priv->base.context_new = nvc0_fence_context_new;
0096     }
0097     return ret;
0098 }