1/*
  2 * Copyright 2007 Dave Airlied
  3 * All Rights Reserved.
  4 *
  5 * Permission is hereby granted, free of charge, to any person obtaining a
  6 * copy of this software and associated documentation files (the "Software"),
  7 * to deal in the Software without restriction, including without limitation
  8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  9 * and/or sell copies of the Software, and to permit persons to whom the
 10 * Software is furnished to do so, subject to the following conditions:
 11 *
 12 * The above copyright notice and this permission notice (including the next
 13 * paragraph) shall be included in all copies or substantial portions of the
 14 * Software.
 15 *
 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 19 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 22 * OTHER DEALINGS IN THE SOFTWARE.
 23 */
 24/*
 25 * Authors: Dave Airlied <airlied@linux.ie>
 26 *	    Ben Skeggs   <darktama@iinet.net.au>
 27 *	    Jeremy Kolb  <jkolb@brandeis.edu>
 28 */
 29#include "nouveau_bo.h"
 30#include "nouveau_dma.h"
 31#include "nouveau_drv.h"
 32
 33#include <nvif/push006c.h>
 34
 35#include <nvhw/class/cl0039.h>
 36
 37static inline uint32_t
 38nouveau_bo_mem_ctxdma(struct ttm_buffer_object *bo,
 39		      struct nouveau_channel *chan, struct ttm_resource *reg)
 40{
 41	if (reg->mem_type == TTM_PL_TT)
 42		return NvDmaTT;
 43	return chan->vram.handle;
 44}
 45
 46int
 47nv04_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
 48		  struct ttm_resource *old_reg, struct ttm_resource *new_reg)
 49{
 50	struct nvif_push *push = &chan->chan.push;
 51	u32 src_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, old_reg);
 52	u32 src_offset = old_reg->start << PAGE_SHIFT;
 53	u32 dst_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, new_reg);
 54	u32 dst_offset = new_reg->start << PAGE_SHIFT;
 55	u32 page_count = PFN_UP(new_reg->size);
 56	int ret;
 57
 58	ret = PUSH_WAIT(push, 3);
 59	if (ret)
 60		return ret;
 61
 62	PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_BUFFER_IN, src_ctxdma,
 63			       SET_CONTEXT_DMA_BUFFER_OUT, dst_ctxdma);
 64
 65	page_count = PFN_UP(new_reg->size);
 66	while (page_count) {
 67		int line_count = (page_count > 2047) ? 2047 : page_count;
 68
 69		ret = PUSH_WAIT(push, 11);
 70		if (ret)
 71			return ret;
 72
 73		PUSH_MTHD(push, NV039, OFFSET_IN, src_offset,
 74				       OFFSET_OUT, dst_offset,
 75				       PITCH_IN, PAGE_SIZE,
 76				       PITCH_OUT, PAGE_SIZE,
 77				       LINE_LENGTH_IN, PAGE_SIZE,
 78				       LINE_COUNT, line_count,
 79
 80				       FORMAT,
 81			  NVVAL(NV039, FORMAT, IN, 1) |
 82			  NVVAL(NV039, FORMAT, OUT, 1),
 83
 84				       BUFFER_NOTIFY, NV039_BUFFER_NOTIFY_WRITE_ONLY);
 85
 86		PUSH_MTHD(push, NV039, NO_OPERATION, 0x00000000);
 87
 88		page_count -= line_count;
 89		src_offset += (PAGE_SIZE * line_count);
 90		dst_offset += (PAGE_SIZE * line_count);
 91	}
 92
 93	return 0;
 94}
 95
 96int
 97nv04_bo_move_init(struct nouveau_channel *chan, u32 handle)
 98{
 99	struct nvif_push *push = &chan->chan.push;
100	int ret;
101
102	ret = PUSH_WAIT(push, 4);
103	if (ret)
104		return ret;
105
106	PUSH_MTHD(push, NV039, SET_OBJECT, handle);
107	PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_NOTIFIES, chan->cli->drm->ntfy.handle);
108	return 0;
109}