nouveau: ouch, add nouveau_dma.[ch] files..

1 files changed, 98 insertions, 0 deletions

diff --git a/shared-core/nouveau_dma.h b/shared-core/nouveau_dma.h
new file mode 100644
index 00000000..5e51c1c4
--- /dev/null
+++ b/shared-core/nouveau_dma.h
@@ -0,0 +1,98 @@
+/*
+ * 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__
+
+typedef enum {
+	NvSubM2MF	= 0,
+} nouveau_subchannel_id_t;
+
+typedef enum {
+	NvM2MF		= 0x80039001,
+	NvDmaFB		= 0x8003d001,
+	NvDmaTT		= 0x8003d002,
+	NvNotify0       = 0x8003d003
+} nouveau_object_handle_t;
+
+#define NV_MEMORY_TO_MEMORY_FORMAT                                    0x00000039
+#define NV_MEMORY_TO_MEMORY_FORMAT_NAME                               0x00000000
+#define NV_MEMORY_TO_MEMORY_FORMAT_SET_REF                            0x00000050
+#define NV_MEMORY_TO_MEMORY_FORMAT_NOP                                0x00000100
+#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY                             0x00000104
+#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE                 0x00000000
+#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE_LE_AWAKEN       0x00000001
+#define NV_MEMORY_TO_MEMORY_FORMAT_SET_DMA_NOTIFY                     0x00000180
+#define NV_MEMORY_TO_MEMORY_FORMAT_SET_DMA_SOURCE                     0x00000184
+#define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN                          0x0000030c
+
+#define NV50_MEMORY_TO_MEMORY_FORMAT                                  0x00005039
+#define NV50_MEMORY_TO_MEMORY_FORMAT_UNK200                           0x00000200
+#define NV50_MEMORY_TO_MEMORY_FORMAT_UNK21C                           0x0000021c
+#define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN_HIGH                   0x00000238
+#define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_OUT_HIGH                  0x0000023c
+
+#define BEGIN_RING(subc, mthd, cnt) do {                                       \
+	int push_size = (cnt) + 1;                                             \
+	if (dchan->push_free) {                                                \
+		DRM_ERROR("prior packet incomplete: %d\n", dchan->push_free);  \
+		break;                                                         \
+	}                                                                      \
+	if (dchan->free < push_size) {                                         \
+		if (nouveau_dma_wait(dev, push_size)) {                        \
+			DRM_ERROR("FIFO timeout\n");                           \
+			break;                                                 \
+		}                                                              \
+	}                                                                      \
+	dchan->free -= push_size;                                              \
+	dchan->push_free = push_size;                                          \
+	OUT_RING(((cnt)<<18) | ((subc)<<15) | mthd);                           \
+} while(0)
+
+#define OUT_RING(data) do {                                                    \
+	if (dchan->push_free == 0) {                                           \
+		DRM_ERROR("no space left in packet\n");                        \
+		break;                                                         \
+	}                                                                      \
+	dchan->pushbuf[dchan->cur++] = (data);                                 \
+	dchan->push_free--;                                                    \
+} while(0)
+
+#define FIRE_RING() do {                                                       \
+	if (dchan->push_free) {                                                \
+		DRM_ERROR("packet incomplete: %d\n", dchan->push_free);        \
+		break;                                                         \
+	}                                                                      \
+	if (dchan->cur != dchan->put) {                                        \
+		DRM_MEMORYBARRIER();                                           \
+		dchan->put = dchan->cur;                                       \
+		NV_WRITE(NV03_FIFO_REGS_DMAPUT(dchan->chan->id),               \
+			 (dchan->put<<2));                                     \
+	}                                                                      \
+} while(0)
+
+#endif
+