nv50.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 "nv50.h"
 25
 26#include <core/gpuobj.h>
 27#include <engine/disp.h>
 28#include <engine/fifo/chan.h>
 29#include <subdev/bar.h>
 30
 31#include <nvif/class.h>
 32#include <nvif/event.h>
 33
 34/*******************************************************************************
 35 * software context
 36 ******************************************************************************/
 37
 38static int
 39nv50_sw_chan_vblsem_release(struct nvkm_event_ntfy *notify, u32 bits)
 40{
 41	struct nv50_sw_chan *chan =
 42		container_of(notify, typeof(*chan), vblank.notify[notify->id]);
 43	struct nvkm_sw *sw = chan->base.sw;
 44	struct nvkm_device *device = sw->engine.subdev.device;
 45
 46	nvkm_wr32(device, 0x001704, chan->base.fifo->inst->addr >> 12);
 47	nvkm_wr32(device, 0x001710, 0x80000000 | chan->vblank.ctxdma);
 48	nvkm_bar_flush(device->bar);
 49
 50	if (device->chipset == 0x50) {
 51		nvkm_wr32(device, 0x001570, chan->vblank.offset);
 52		nvkm_wr32(device, 0x001574, chan->vblank.value);
 53	} else {
 54		nvkm_wr32(device, 0x060010, chan->vblank.offset);
 55		nvkm_wr32(device, 0x060014, chan->vblank.value);
 56	}
 57
 58	return NVKM_EVENT_DROP;
 59}
 60
 61static bool
 62nv50_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
 63{
 64	struct nv50_sw_chan *chan = nv50_sw_chan(base);
 65	struct nvkm_engine *engine = chan->base.object.engine;
 66	struct nvkm_device *device = engine->subdev.device;
 67	switch (mthd) {
 68	case 0x018c: chan->vblank.ctxdma = data; return true;
 69	case 0x0400: chan->vblank.offset = data; return true;
 70	case 0x0404: chan->vblank.value  = data; return true;
 71	case 0x0408:
 72		if (data < device->disp->vblank.index_nr) {
 73			nvkm_event_ntfy_allow(&chan->vblank.notify[data]);
 74			return true;
 75		}
 76		break;
 77	default:
 78		break;
 79	}
 80	return false;
 81}
 82
 83void *
 84nv50_sw_chan_dtor(struct nvkm_sw_chan *base)
 85{
 86	struct nv50_sw_chan *chan = nv50_sw_chan(base);
 87	int i;
 88
 89	for (i = 0; i < ARRAY_SIZE(chan->vblank.notify); i++)
 90		nvkm_event_ntfy_del(&chan->vblank.notify[i]);
 91
 92	return chan;
 93}
 94
 95static const struct nvkm_sw_chan_func
 96nv50_sw_chan = {
 97	.dtor = nv50_sw_chan_dtor,
 98	.mthd = nv50_sw_chan_mthd,
 99};
100
101static int
102nv50_sw_chan_new(struct nvkm_sw *sw, struct nvkm_chan *fifoch,
103		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
104{
105	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
106	struct nv50_sw_chan *chan;
107	int ret, i;
108
109	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
110		return -ENOMEM;
111	*pobject = &chan->base.object;
112
113	ret = nvkm_sw_chan_ctor(&nv50_sw_chan, sw, fifoch, oclass, &chan->base);
114	if (ret)
115		return ret;
116
117	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
118		nvkm_event_ntfy_add(&disp->vblank, i, NVKM_DISP_HEAD_EVENT_VBLANK, true,
119				    nv50_sw_chan_vblsem_release, &chan->vblank.notify[i]);
120	}
121
122	return 0;
123}
124
125/*******************************************************************************
126 * software engine/subdev functions
127 ******************************************************************************/
128
129static const struct nvkm_sw_func
130nv50_sw = {
131	.chan_new = nv50_sw_chan_new,
132	.sclass = {
133		{ nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV50 } },
134		{}
135	}
136};
137
138int
139nv50_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
140{
141	return nvkm_sw_new_(&nv50_sw, device, type, inst, psw);
142}