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nouveau_nvc0_fence.c revision 1.1 
      1 /*	$NetBSD: nouveau_nvc0_fence.c,v 1.1 2014/08/06 12:36:23 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvc0_fence.c,v 1.1 2014/08/06 12:36:23 riastradh Exp $");
     29 
     30 #include <core/object.h>
     31 #include <core/client.h>
     32 #include <core/class.h>
     33 
     34 #include <engine/fifo.h>
     35 
     36 #include "nouveau_drm.h"
     37 #include "nouveau_dma.h"
     38 #include "nouveau_fence.h"
     39 
     40 #include "nv50_display.h"
     41 
     42 static int
     43 nvc0_fence_emit32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
     44 {
     45 	int ret = RING_SPACE(chan, 6);
     46 	if (ret == 0) {
     47 		BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 5);
     48 		OUT_RING  (chan, upper_32_bits(virtual));
     49 		OUT_RING  (chan, lower_32_bits(virtual));
     50 		OUT_RING  (chan, sequence);
     51 		OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG);
     52 		OUT_RING  (chan, 0x00000000);
     53 		FIRE_RING (chan);
     54 	}
     55 	return ret;
     56 }
     57 
     58 static int
     59 nvc0_fence_sync32(struct nouveau_channel *chan, u64 virtual, u32 sequence)
     60 {
     61 	int ret = RING_SPACE(chan, 5);
     62 	if (ret == 0) {
     63 		BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4);
     64 		OUT_RING  (chan, upper_32_bits(virtual));
     65 		OUT_RING  (chan, lower_32_bits(virtual));
     66 		OUT_RING  (chan, sequence);
     67 		OUT_RING  (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_GEQUAL |
     68 				 NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD);
     69 		FIRE_RING (chan);
     70 	}
     71 	return ret;
     72 }
     73 
     74 static int
     75 nvc0_fence_context_new(struct nouveau_channel *chan)
     76 {
     77 	int ret = nv84_fence_context_new(chan);
     78 	if (ret == 0) {
     79 		struct nv84_fence_chan *fctx = chan->fence;
     80 		fctx->base.emit32 = nvc0_fence_emit32;
     81 		fctx->base.sync32 = nvc0_fence_sync32;
     82 	}
     83 	return ret;
     84 }
     85 
     86 int
     87 nvc0_fence_create(struct nouveau_drm *drm)
     88 {
     89 	int ret = nv84_fence_create(drm);
     90 	if (ret == 0) {
     91 		struct nv84_fence_priv *priv = drm->fence;
     92 		priv->base.context_new = nvc0_fence_context_new;
     93 	}
     94 	return ret;
     95 }
     96