[Nouveau] [mesa 7/9] nv50: fix g98+ vdec class allocation

[Ben Skeggs]

From: Ben Skeggs <bskeggs at redhat.com>

The kernel previously exposed incorrect classes for some of the chipsets
that this code supports.  It no longer does, but the older object ioctls
have compatibility to avoid breaking userspace.

This needs to be fixed before switching over to the newer interfaces.

Rather than hardcoding chipset->class like the rest of the driver does,
this makes use of (new) sclass queries to determine what's available.

Signed-off-by: Ben Skeggs <bskeggs at redhat.com>
---
 src/gallium/drivers/nouveau/nv50/nv98_video.c | 55 ++++++++++++++++++++++++---
 1 file changed, 49 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nv50/nv98_video.c b/src/gallium/drivers/nouveau/nv50/nv98_video.c
index 20ea547..ef1d6f3 100644
--- a/src/gallium/drivers/nouveau/nv50/nv98_video.c
+++ b/src/gallium/drivers/nouveau/nv50/nv98_video.c
@@ -56,6 +56,28 @@ nv98_decoder_decode_bitstream(struct pipe_video_codec *decoder,
    nv98_decoder_ppp(dec, desc, target, comm_seq);
 }
 
+static const struct nouveau_mclass
+nv98_decoder_msvld[] = {
+   { 0x88b1, -1 },
+   { 0x86b1, -1 },
+   { 0x85b1, -1 },
+   {}
+};
+
+static const struct nouveau_mclass
+nv98_decoder_mspdec[] = {
+   { 0x88b2, -1 },
+   { 0x85b2, -1 },
+   {}
+};
+
+static const struct nouveau_mclass
+nv98_decoder_msppp[] = {
+   { 0x88b3, -1 },
+   { 0x85b3, -1 },
+   {}
+};
+
 struct pipe_video_codec *
 nv98_create_decoder(struct pipe_context *context,
                     const struct pipe_video_codec *templ)
@@ -103,12 +125,33 @@ nv98_create_decoder(struct pipe_context *context,
    }
    push = dec->pushbuf;
 
-   if (!ret)
-      ret = nouveau_object_new(dec->channel[0], 0x390b1, 0x85b1, NULL, 0, &dec->bsp);
-   if (!ret)
-      ret = nouveau_object_new(dec->channel[1], 0x190b2, 0x85b2, NULL, 0, &dec->vp);
-   if (!ret)
-      ret = nouveau_object_new(dec->channel[2], 0x290b3, 0x85b3, NULL, 0, &dec->ppp);
+   if (!ret) {
+      ret = nouveau_object_mclass(dec->channel[0], nv98_decoder_msvld);
+      if (ret >= 0) {
+         ret = nouveau_object_new(dec->channel[0], 0xbeef85b1,
+                                  nv98_decoder_msvld[ret].oclass, NULL, 0,
+                                  &dec->bsp);
+      }
+   }
+
+   if (!ret) {
+      ret = nouveau_object_mclass(dec->channel[1], nv98_decoder_mspdec);
+      if (ret >= 0) {
+         ret = nouveau_object_new(dec->channel[1], 0xbeef85b2,
+                                  nv98_decoder_mspdec[ret].oclass, NULL, 0,
+                                  &dec->vp);
+      }
+   }
+
+   if (!ret) {
+      ret = nouveau_object_mclass(dec->channel[2], nv98_decoder_msppp);
+      if (ret >= 0) {
+         ret = nouveau_object_new(dec->channel[2], 0xbeef85b3,
+                                  nv98_decoder_msppp[ret].oclass, NULL, 0,
+                                  &dec->ppp);
+      }
+   }
+
    if (ret)
       goto fail;
 
-- 
2.6.3