drm/nv50-nvc0: initialise display sync channels
Also imports a couple of helper functions that'll be used to implement
page flipping in the following commits..
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_object.c b/drivers/gpu/drm/nouveau/nouveau_object.c
index 710a705..4f00c87 100644
--- a/drivers/gpu/drm/nouveau/nouveau_object.c
+++ b/drivers/gpu/drm/nouveau/nouveau_object.c
@@ -36,6 +36,7 @@
#include "nouveau_drm.h"
#include "nouveau_ramht.h"
#include "nouveau_vm.h"
+#include "nv50_display.h"
struct nouveau_gpuobj_method {
struct list_head head;
@@ -782,7 +783,7 @@
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_gpuobj *vram = NULL, *tt = NULL;
- int ret;
+ int ret, i;
NV_DEBUG(dev, "ch%d vram=0x%08x tt=0x%08x\n", chan->id, vram_h, tt_h);
@@ -847,6 +848,25 @@
nouveau_gpuobj_ref(NULL, &ramht);
if (ret)
return ret;
+
+ /* dma objects for display sync channel semaphore blocks */
+ for (i = 0; i < 2; i++) {
+ struct nouveau_gpuobj *sem = NULL;
+ struct nv50_display_crtc *dispc =
+ &nv50_display(dev)->crtc[i];
+ u64 offset = dispc->sem.bo->bo.mem.start << PAGE_SHIFT;
+
+ ret = nouveau_gpuobj_dma_new(chan, 0x3d, offset, 0xfff,
+ NV_MEM_ACCESS_RW,
+ NV_MEM_TARGET_VRAM, &sem);
+ if (ret)
+ return ret;
+
+ ret = nouveau_ramht_insert(chan, NvEvoSema0 + i, sem);
+ nouveau_gpuobj_ref(NULL, &sem);
+ if (ret)
+ return ret;
+ }
}
/* VRAM ctxdma */