Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 113 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_dma.h b/drivers/gpu/drm/nouveau/nouveau_dma.h
new file mode 100644
index 000000000..035a709c7
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_dma.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2007 Ben Skeggs.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __NOUVEAU_DMA_H__
+#define __NOUVEAU_DMA_H__
+
+#include "nouveau_bo.h"
+#include "nouveau_chan.h"
+
+int nouveau_dma_wait(struct nouveau_channel *, int slots, int size);
+void nv50_dma_push(struct nouveau_channel *, u64 addr, int length);
+
+/*
+ * There's a hw race condition where you can't jump to your PUT offset,
+ * to avoid this we jump to offset + SKIPS and fill the difference with
+ * NOPs.
+ *
+ * xf86-video-nv configures the DMA fetch size to 32 bytes, and uses
+ * a SKIPS value of 8.  Lets assume that the race condition is to do
+ * with writing into the fetch area, we configure a fetch size of 128
+ * bytes so we need a larger SKIPS value.
+ */
+#define NOUVEAU_DMA_SKIPS (128 / 4)
+
+/* Object handles - for stuff that's doesn't use handle == oclass. */
+enum {
+	NvDmaFB		= 0x80000002,
+	NvDmaTT		= 0x80000003,
+	NvNotify0       = 0x80000006,
+	NvSema		= 0x8000000f,
+	NvEvoSema0	= 0x80000010,
+	NvEvoSema1	= 0x80000011,
+};
+
+static __must_check inline int
+RING_SPACE(struct nouveau_channel *chan, int size)
+{
+	int ret;
+
+	ret = nouveau_dma_wait(chan, 1, size);
+	if (ret)
+		return ret;
+
+	chan->dma.free -= size;
+	return 0;
+}
+
+static inline void
+OUT_RING(struct nouveau_channel *chan, int data)
+{
+	nouveau_bo_wr32(chan->push.buffer, chan->dma.cur++, data);
+}
+
+#define WRITE_PUT(val) do {                                                    \
+	mb();                                                   \
+	nouveau_bo_rd32(chan->push.buffer, 0);                                 \
+	nvif_wr32(&chan->user, chan->user_put, ((val) << 2) + chan->push.addr);\
+} while (0)
+
+static inline void
+FIRE_RING(struct nouveau_channel *chan)
+{
+	if (chan->dma.cur == chan->dma.put)
+		return;
+	chan->accel_done = true;
+
+	if (chan->dma.ib_max) {
+		nv50_dma_push(chan, chan->push.addr + (chan->dma.put << 2),
+			      (chan->dma.cur - chan->dma.put) << 2);
+	} else {
+		WRITE_PUT(chan->dma.cur);
+	}
+
+	chan->dma.put = chan->dma.cur;
+}
+
+static inline void
+WIND_RING(struct nouveau_channel *chan)
+{
+	chan->dma.cur = chan->dma.put;
+}
+
+/* NV_SW object class */
+#define NV_SW_DMA_VBLSEM                                             0x0000018c
+#define NV_SW_VBLSEM_OFFSET                                          0x00000400
+#define NV_SW_VBLSEM_RELEASE_VALUE                                   0x00000404
+#define NV_SW_VBLSEM_RELEASE                                         0x00000408
+#define NV_SW_PAGE_FLIP                                              0x00000500
+
+#endif