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-rw-r--r--shared-core/nouveau_dma.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/shared-core/nouveau_dma.h b/shared-core/nouveau_dma.h
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+++ b/shared-core/nouveau_dma.h
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+/*
+ * 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
+