drm/nv50/fifo: add support for dma channel class

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

3 files changed, 72 insertions, 7 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/dmaobj/nv50.c b/drivers/gpu/drm/nouveau/core/engine/dmaobj/nv50.c
index fbcd9d04fe6b..be5c0df644db 100644
--- a/drivers/gpu/drm/nouveau/core/engine/dmaobj/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/dmaobj/nv50.c
@@ -109,6 +109,7 @@ nv50_dmaobj_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
                 return ret;
 
         switch (nv_mclass(parent)) {
+        case 0x506e:
         case 0x506f:
         case 0x826e:
         case 0x826f:
diff --git a/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c b/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c
index 452f2241783a..44a0dce07e19 100644
--- a/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/engine/fifo/nv50.c
@@ -178,10 +178,62 @@ nv50_fifo_object_detach(struct nouveau_object *parent, int cookie)
 }
 
 static int
-nv50_fifo_chan_ctor(struct nouveau_object *parent,
-                    struct nouveau_object *engine,
-                    struct nouveau_oclass *oclass, void *data, u32 size,
-                    struct nouveau_object **pobject)
+nv50_fifo_chan_ctor_dma(struct nouveau_object *parent,
+                        struct nouveau_object *engine,
+                        struct nouveau_oclass *oclass, void *data, u32 size,
+                        struct nouveau_object **pobject)
+{
+        struct nouveau_bar *bar = nouveau_bar(parent);
+        struct nv50_fifo_base *base = (void *)parent;
+        struct nv50_fifo_chan *chan;
+        struct nv03_channel_dma_class *args = data;
+        int ret;
+
+        if (size < sizeof(*args))
+                return -EINVAL;
+
+        ret = nouveau_fifo_channel_create(parent, engine, oclass, 0, 0xc00000,
+                                          0x2000, args->pushbuf,
+                                          (1 << NVDEV_ENGINE_DMAOBJ) |
+                                          (1 << NVDEV_ENGINE_SW) |
+                                          (1 << NVDEV_ENGINE_GR) |
+                                          (1 << NVDEV_ENGINE_MPEG), &chan);
+        *pobject = nv_object(chan);
+        if (ret)
+                return ret;
+
+        nv_parent(chan)->context_attach = nv50_fifo_context_attach;
+        nv_parent(chan)->context_detach = nv50_fifo_context_detach;
+        nv_parent(chan)->object_attach = nv50_fifo_object_attach;
+        nv_parent(chan)->object_detach = nv50_fifo_object_detach;
+
+        ret = nouveau_ramht_new(parent, parent, 0x8000, 16, &chan->ramht);
+        if (ret)
+                return ret;
+
+        nv_wo32(base->ramfc, 0x08, lower_32_bits(args->offset));
+        nv_wo32(base->ramfc, 0x0c, upper_32_bits(args->offset));
+        nv_wo32(base->ramfc, 0x10, lower_32_bits(args->offset));
+        nv_wo32(base->ramfc, 0x14, upper_32_bits(args->offset));
+        nv_wo32(base->ramfc, 0x3c, 0x003f6078);
+        nv_wo32(base->ramfc, 0x44, 0x01003fff);
+        nv_wo32(base->ramfc, 0x48, chan->base.pushgpu->node->offset >> 4);
+        nv_wo32(base->ramfc, 0x4c, 0xffffffff);
+        nv_wo32(base->ramfc, 0x60, 0x7fffffff);
+        nv_wo32(base->ramfc, 0x78, 0x00000000);
+        nv_wo32(base->ramfc, 0x7c, 0x30000001);
+        nv_wo32(base->ramfc, 0x80, ((chan->ramht->bits - 9) << 27) |
+                                   (4 << 24) /* SEARCH_FULL */ |
+                                   (chan->ramht->base.node->offset >> 4));
+        bar->flush(bar);
+        return 0;
+}
+
+static int
+nv50_fifo_chan_ctor_ind(struct nouveau_object *parent,
+                        struct nouveau_object *engine,
+                        struct nouveau_oclass *oclass, void *data, u32 size,
+                        struct nouveau_object **pobject)
 {
         struct nv50_channel_ind_class *args = data;
         struct nouveau_bar *bar = nouveau_bar(parent);
@@ -273,8 +325,18 @@ nv50_fifo_chan_fini(struct nouveau_object *object, bool suspend)
 }
 
 static struct nouveau_ofuncs
-nv50_fifo_ofuncs = {
-        .ctor = nv50_fifo_chan_ctor,
+nv50_fifo_ofuncs_dma = {
+        .ctor = nv50_fifo_chan_ctor_dma,
+        .dtor = nv50_fifo_chan_dtor,
+        .init = nv50_fifo_chan_init,
+        .fini = nv50_fifo_chan_fini,
+        .rd32 = _nouveau_fifo_channel_rd32,
+        .wr32 = _nouveau_fifo_channel_wr32,
+};
+
+static struct nouveau_ofuncs
+nv50_fifo_ofuncs_ind = {
+        .ctor = nv50_fifo_chan_ctor_ind,
         .dtor = nv50_fifo_chan_dtor,
         .init = nv50_fifo_chan_init,
         .fini = nv50_fifo_chan_fini,
@@ -284,7 +346,8 @@ nv50_fifo_ofuncs = {
 
 static struct nouveau_oclass
 nv50_fifo_sclass[] = {
-        { 0x506f, &nv50_fifo_ofuncs },
+        { 0x506e, &nv50_fifo_ofuncs_dma },
+        { 0x506f, &nv50_fifo_ofuncs_ind },
         {}
 };
 
diff --git a/drivers/gpu/drm/nouveau/core/include/core/class.h b/drivers/gpu/drm/nouveau/core/include/core/class.h
index 36759159db05..b0e1948f4e71 100644
--- a/drivers/gpu/drm/nouveau/core/include/core/class.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/class.h
@@ -55,6 +55,7 @@ struct nv_dma_class {
  * 006e: NV10_CHANNEL_DMA
  * 176e: NV17_CHANNEL_DMA
  * 406e: NV40_CHANNEL_DMA
+ * 506e: NV50_CHANNEL_DMA
  * 826e: NV84_CHANNEL_DMA
  */