kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/dmacnv50.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 "dmacnv50.h"
  25 #include "rootnv50.h"
  26
  27 #include <core/client.h>
  28 #include <core/oproxy.h>
  29 #include <core/ramht.h>
  30 #include <subdev/fb.h>
  31 #include <subdev/timer.h>
  32 #include <engine/dma.h>
  33
  34 struct nv50_disp_dmac_object {
  35         struct nvkm_oproxy oproxy;
  36         struct nv50_disp_root *root;
  37         int hash;
  38 };
  39
  40 static void
  41 nv50_disp_dmac_child_del_(struct nvkm_oproxy *base)
  42 {
  43         struct nv50_disp_dmac_object *object =
  44                 container_of(base, typeof(*object), oproxy);
  45         nvkm_ramht_remove(object->root->ramht, object->hash);
  46 }
  47
  48 static const struct nvkm_oproxy_func
  49 nv50_disp_dmac_child_func_ = {
  50         .dtor[0] = nv50_disp_dmac_child_del_,
  51 };
  52
  53 static int
  54 nv50_disp_dmac_child_new_(struct nv50_disp_chan *base,
  55                           const struct nvkm_oclass *oclass,
  56                           void *data, u32 size, struct nvkm_object **pobject)
  57 {
  58         struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
  59         struct nv50_disp_root *root = chan->base.root;
  60         struct nvkm_device *device = root->disp->base.engine.subdev.device;
  61         const struct nvkm_device_oclass *sclass = oclass->priv;
  62         struct nv50_disp_dmac_object *object;
  63         int ret;
  64
  65         if (!(object = kzalloc(sizeof(*object), GFP_KERNEL)))
  66                 return -ENOMEM;
  67         nvkm_oproxy_ctor(&nv50_disp_dmac_child_func_, oclass, &object->oproxy);
  68         object->root = root;
  69         *pobject = &object->oproxy.base;
  70
  71         ret = sclass->ctor(device, oclass, data, size, &object->oproxy.object);
  72         if (ret)
  73                 return ret;
  74
  75         object->hash = chan->func->bind(chan, object->oproxy.object,
  76                                               oclass->handle);
  77         if (object->hash < 0)
  78                 return object->hash;
  79
  80         return 0;
  81 }
  82
  83 static int
  84 nv50_disp_dmac_child_get_(struct nv50_disp_chan *base, int index,
  85                           struct nvkm_oclass *sclass)
  86 {
  87         struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
  88         struct nv50_disp *disp = chan->base.root->disp;
  89         struct nvkm_device *device = disp->base.engine.subdev.device;
  90         const struct nvkm_device_oclass *oclass = NULL;
  91
  92         sclass->engine = nvkm_device_engine(device, NVKM_ENGINE_DMAOBJ);
  93         if (sclass->engine && sclass->engine->func->base.sclass) {
  94                 sclass->engine->func->base.sclass(sclass, index, &oclass);
  95                 if (oclass) {
  96                         sclass->priv = oclass;
  97                         return 0;
  98                 }
  99         }
 100
 101         return -EINVAL;
 102 }
 103
 104 static void
 105 nv50_disp_dmac_fini_(struct nv50_disp_chan *base)
 106 {
 107         struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
 108         chan->func->fini(chan);
 109 }
 110
 111 static int
 112 nv50_disp_dmac_init_(struct nv50_disp_chan *base)
 113 {
 114         struct nv50_disp_dmac *chan = nv50_disp_dmac(base);
 115         return chan->func->init(chan);
 116 }
 117
 118 static void *
 119 nv50_disp_dmac_dtor_(struct nv50_disp_chan *base)
 120 {
 121         return nv50_disp_dmac(base);
 122 }
 123
 124 static const struct nv50_disp_chan_func
 125 nv50_disp_dmac_func_ = {
 126         .dtor = nv50_disp_dmac_dtor_,
 127         .init = nv50_disp_dmac_init_,
 128         .fini = nv50_disp_dmac_fini_,
 129         .child_get = nv50_disp_dmac_child_get_,
 130         .child_new = nv50_disp_dmac_child_new_,
 131 };
 132
 133 int
 134 nv50_disp_dmac_new_(const struct nv50_disp_dmac_func *func,
 135                     const struct nv50_disp_chan_mthd *mthd,
 136                     struct nv50_disp_root *root, int chid, int head, u64 push,
 137                     const struct nvkm_oclass *oclass,
 138                     struct nvkm_object **pobject)
 139 {
 140         struct nvkm_device *device = root->disp->base.engine.subdev.device;
 141         struct nvkm_client *client = oclass->client;
 142         struct nvkm_dmaobj *dmaobj;
 143         struct nv50_disp_dmac *chan;
 144         int ret;
 145
 146         if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
 147                 return -ENOMEM;
 148         *pobject = &chan->base.object;
 149         chan->func = func;
 150
 151         ret = nv50_disp_chan_ctor(&nv50_disp_dmac_func_, mthd, root,
 152                                   chid, head, oclass, &chan->base);
 153         if (ret)
 154                 return ret;
 155
 156         dmaobj = nvkm_dma_search(device->dma, client, push);
 157         if (!dmaobj)
 158                 return -ENOENT;
 159
 160         if (dmaobj->limit - dmaobj->start != 0xfff)
 161                 return -EINVAL;
 162
 163         switch (dmaobj->target) {
 164         case NV_MEM_TARGET_VRAM:
 165                 chan->push = 0x00000001 | dmaobj->start >> 8;
 166                 break;
 167         case NV_MEM_TARGET_PCI_NOSNOOP:
 168                 chan->push = 0x00000003 | dmaobj->start >> 8;
 169                 break;
 170         default:
 171                 return -EINVAL;
 172         }
 173
 174         return 0;
 175 }
 176
 177 int
 178 nv50_disp_dmac_bind(struct nv50_disp_dmac *chan,
 179                     struct nvkm_object *object, u32 handle)
 180 {
 181         return nvkm_ramht_insert(chan->base.root->ramht, object,
 182                                  chan->base.chid, -10, handle,
 183                                  chan->base.chid << 28 |
 184                                  chan->base.chid);
 185 }
 186
 187 static void
 188 nv50_disp_dmac_fini(struct nv50_disp_dmac *chan)
 189 {
 190         struct nv50_disp *disp = chan->base.root->disp;
 191         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
 192         struct nvkm_device *device = subdev->device;
 193         int chid = chan->base.chid;
 194
 195         /* deactivate channel */
 196         nvkm_mask(device, 0x610200 + (chid * 0x0010), 0x00001010, 0x00001000);
 197         nvkm_mask(device, 0x610200 + (chid * 0x0010), 0x00000003, 0x00000000);
 198         if (nvkm_msec(device, 2000,
 199                 if (!(nvkm_rd32(device, 0x610200 + (chid * 0x10)) & 0x001e0000))
 200                         break;
 201         ) < 0) {
 202                 nvkm_error(subdev, "ch %d fini timeout, %08x\n", chid,
 203                            nvkm_rd32(device, 0x610200 + (chid * 0x10)));
 204         }
 205
 206         /* disable error reporting and completion notifications */
 207         nvkm_mask(device, 0x610028, 0x00010001 << chid, 0x00000000 << chid);
 208 }
 209
 210 static int
 211 nv50_disp_dmac_init(struct nv50_disp_dmac *chan)
 212 {
 213         struct nv50_disp *disp = chan->base.root->disp;
 214         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
 215         struct nvkm_device *device = subdev->device;
 216         int chid = chan->base.chid;
 217
 218         /* enable error reporting */
 219         nvkm_mask(device, 0x610028, 0x00010000 << chid, 0x00010000 << chid);
 220
 221         /* initialise channel for dma command submission */
 222         nvkm_wr32(device, 0x610204 + (chid * 0x0010), chan->push);
 223         nvkm_wr32(device, 0x610208 + (chid * 0x0010), 0x00010000);
 224         nvkm_wr32(device, 0x61020c + (chid * 0x0010), chid);
 225         nvkm_mask(device, 0x610200 + (chid * 0x0010), 0x00000010, 0x00000010);
 226         nvkm_wr32(device, 0x640000 + (chid * 0x1000), 0x00000000);
 227         nvkm_wr32(device, 0x610200 + (chid * 0x0010), 0x00000013);
 228
 229         /* wait for it to go inactive */
 230         if (nvkm_msec(device, 2000,
 231                 if (!(nvkm_rd32(device, 0x610200 + (chid * 0x10)) & 0x80000000))
 232                         break;
 233         ) < 0) {
 234                 nvkm_error(subdev, "ch %d init timeout, %08x\n", chid,
 235                            nvkm_rd32(device, 0x610200 + (chid * 0x10)));
 236                 return -EBUSY;
 237         }
 238
 239         return 0;
 240 }
 241
 242 const struct nv50_disp_dmac_func
 243 nv50_disp_dmac_func = {
 244         .init = nv50_disp_dmac_init,
 245         .fini = nv50_disp_dmac_fini,
 246         .bind = nv50_disp_dmac_bind,
 247 };