kernel/drivers/gpu/drm/nouveau/nvkm/engine/sw/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/event.h>
  32 #include <nvif/ioctl.h>
  33
  34 /*******************************************************************************
  35  * software context
  36  ******************************************************************************/
  37
  38 static int
  39 nv50_sw_chan_vblsem_release(struct nvkm_notify *notify)
  40 {
  41         struct nv50_sw_chan *chan =
  42                 container_of(notify, typeof(*chan), vblank.notify[notify->index]);
  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_NOTIFY_DROP;
  59 }
  60
  61 static bool
  62 nv50_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_notify_get(&chan->vblank.notify[data]);
  74                         return true;
  75                 }
  76                 break;
  77         default:
  78                 break;
  79         }
  80         return false;
  81 }
  82
  83 void *
  84 nv50_sw_chan_dtor(struct nvkm_sw_chan *base)
  85 {
  86         struct nv50_sw_chan *chan = nv50_sw_chan(base);
  87         int i;
  88         for (i = 0; i < ARRAY_SIZE(chan->vblank.notify); i++)
  89                 nvkm_notify_fini(&chan->vblank.notify[i]);
  90         return chan;
  91 }
  92
  93 static const struct nvkm_sw_chan_func
  94 nv50_sw_chan = {
  95         .dtor = nv50_sw_chan_dtor,
  96         .mthd = nv50_sw_chan_mthd,
  97 };
  98
  99 static int
 100 nv50_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifoch,
 101                  const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
 102 {
 103         struct nvkm_disp *disp = sw->engine.subdev.device->disp;
 104         struct nv50_sw_chan *chan;
 105         int ret, i;
 106
 107         if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 108                 return -ENOMEM;
 109         *pobject = &chan->base.object;
 110
 111         ret = nvkm_sw_chan_ctor(&nv50_sw_chan, sw, fifoch, oclass, &chan->base);
 112         if (ret)
 113                 return ret;
 114
 115         for (i = 0; disp && i < disp->vblank.index_nr; i++) {
 116                 ret = nvkm_notify_init(NULL, &disp->vblank,
 117                                        nv50_sw_chan_vblsem_release, false,
 118                                        &(struct nvif_notify_head_req_v0) {
 119                                         .head = i,
 120                                        },
 121                                        sizeof(struct nvif_notify_head_req_v0),
 122                                        sizeof(struct nvif_notify_head_rep_v0),
 123                                        &chan->vblank.notify[i]);
 124                 if (ret)
 125                         return ret;
 126         }
 127
 128         return 0;
 129 }
 130
 131 /*******************************************************************************
 132  * software engine/subdev functions
 133  ******************************************************************************/
 134
 135 static const struct nvkm_sw_func
 136 nv50_sw = {
 137         .chan_new = nv50_sw_chan_new,
 138         .sclass = {
 139                 { nvkm_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_NV50 } },
 140                 {}
 141         }
 142 };
 143
 144 int
 145 nv50_sw_new(struct nvkm_device *device, int index, struct nvkm_sw **psw)
 146 {
 147         return nvkm_sw_new_(&nv50_sw, device, index, psw);
 148 }