2 files changed, 39 insertions, 0 deletions
diff --git a/src/gallium/drivers/nv50/nv50_context.h b/src/gallium/drivers/nv50/nv50_context.h
index edd79159e72..2bf634a8237 100644
--- a/src/gallium/drivers/nv50/nv50_context.h
+++ b/src/gallium/drivers/nv50/nv50_context.h
@@ -53,6 +53,7 @@
 #define NV50_BUFCTX_TEXTURES 3
 #define NV50_BUFCTX_COUNT    4
 
+#define NV50_CB_TMP 123
 /* fixed constant buffer binding points - low indices for user's constbufs */
 #define NV50_CB_PVP 124
 #define NV50_CB_PGP 126
@@ -206,6 +207,11 @@ nv50_m2mf_copy_linear(struct nouveau_context *pipe,
                       struct nouveau_bo *dst, unsigned dstoff, unsigned dstdom,
                       struct nouveau_bo *src, unsigned srcoff, unsigned srcdom,
                       unsigned size);
+void
+nv50_cb_push(struct nouveau_context *nv,
+             struct nouveau_bo *bo, unsigned domain,
+             unsigned base, unsigned size,
+             unsigned offset, unsigned words, const uint32_t *data);
 
 /* nv50_vbo.c */
 void nv50_draw_vbo(struct pipe_context *, const struct pipe_draw_info *);
diff --git a/src/gallium/drivers/nv50/nv50_transfer.c b/src/gallium/drivers/nv50/nv50_transfer.c
index c86c417c071..6f860e73348 100644
--- a/src/gallium/drivers/nv50/nv50_transfer.c
+++ b/src/gallium/drivers/nv50/nv50_transfer.c
@@ -364,3 +364,36 @@ nv50_miptree_transfer_unmap(struct pipe_context *pctx,
    nouveau_bo_unmap(tx->rect[1].bo);
 }
 
+void
+nv50_cb_push(struct nouveau_context *nv,
+             struct nouveau_bo *bo, unsigned domain,
+             unsigned base, unsigned size,
+             unsigned offset, unsigned words, const uint32_t *data)
+{
+   struct nouveau_channel *chan = nv->screen->channel;
+
+   assert(!(offset & 3));
+   size = align(size, 0x100);
+
+   while (words) {
+      unsigned nr;
+
+      MARK_RING(chan, 24, 2);
+      nr = AVAIL_RING(chan);
+      nr = MIN2(nr - 7, words);
+      nr = MIN2(nr, NV04_PFIFO_MAX_PACKET_LEN - 1);
+
+      BEGIN_RING(chan, RING_3D(CB_DEF_ADDRESS_HIGH), 3);
+      OUT_RELOCh(chan, bo, base, domain | NOUVEAU_BO_WR);
+      OUT_RELOCl(chan, bo, base, domain | NOUVEAU_BO_WR);
+      OUT_RING  (chan, (NV50_CB_TMP << 16) | (size & 0xffff));
+      BEGIN_RING(chan, RING_3D(CB_ADDR), 1);
+      OUT_RING  (chan, (offset << 6) | NV50_CB_TMP);
+      BEGIN_RING_NI(chan, RING_3D(CB_DATA(0)), nr);
+      OUT_RINGp (chan, data, nr);
+
+      words -= nr;
+      data += nr;
+      offset += nr * 4;
+   }
+}