/*
 * Copyright 2007 Dave Airlied
 * 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
 * VA LINUX SYSTEMS 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.
 */
/*
 * Authors: Dave Airlied <airlied@linux.ie>
 *          Ben Skeggs   <darktama@iinet.net.au>
 *          Jeremy Kolb  <jkolb@brandeis.edu>
 */
#include "nouveau_bo.h"
#include "nouveau_dma.h"
#include "nouveau_drv.h"

#include <nvif/push006c.h>

#include <nvhw/class/cl0039.h>

static inline uint32_t
nouveau_bo_mem_ctxdma(struct ttm_buffer_object *bo,
                      struct nouveau_channel *chan, struct ttm_resource *reg)
{
        if (reg->mem_type == TTM_PL_TT)
                return NvDmaTT;
        return chan->vram.handle;
}

int
nv04_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
                  struct ttm_resource *old_reg, struct ttm_resource *new_reg)
{
        struct nvif_push *push = &chan->chan.push;
        u32 src_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, old_reg);
        u32 src_offset = old_reg->start << PAGE_SHIFT;
        u32 dst_ctxdma = nouveau_bo_mem_ctxdma(bo, chan, new_reg);
        u32 dst_offset = new_reg->start << PAGE_SHIFT;
        u32 page_count = PFN_UP(new_reg->size);
        int ret;

        ret = PUSH_WAIT(push, 3);
        if (ret)
                return ret;

        PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_BUFFER_IN, src_ctxdma,
                               SET_CONTEXT_DMA_BUFFER_OUT, dst_ctxdma);

        page_count = PFN_UP(new_reg->size);
        while (page_count) {
                int line_count = (page_count > 2047) ? 2047 : page_count;

                ret = PUSH_WAIT(push, 11);
                if (ret)
                        return ret;

                PUSH_MTHD(push, NV039, OFFSET_IN, src_offset,
                                       OFFSET_OUT, dst_offset,
                                       PITCH_IN, PAGE_SIZE,
                                       PITCH_OUT, PAGE_SIZE,
                                       LINE_LENGTH_IN, PAGE_SIZE,
                                       LINE_COUNT, line_count,

                                       FORMAT,
                          NVVAL(NV039, FORMAT, IN, 1) |
                          NVVAL(NV039, FORMAT, OUT, 1),

                                       BUFFER_NOTIFY, NV039_BUFFER_NOTIFY_WRITE_ONLY);

                PUSH_MTHD(push, NV039, NO_OPERATION, 0x00000000);

                page_count -= line_count;
                src_offset += (PAGE_SIZE * line_count);
                dst_offset += (PAGE_SIZE * line_count);
        }

        return 0;
}

int
nv04_bo_move_init(struct nouveau_channel *chan, u32 handle)
{
        struct nvif_push *push = &chan->chan.push;
        int ret;

        ret = PUSH_WAIT(push, 4);
        if (ret)
                return ret;

        PUSH_MTHD(push, NV039, SET_OBJECT, handle);
        PUSH_MTHD(push, NV039, SET_CONTEXT_DMA_NOTIFIES, chan->cli->drm->ntfy.handle);
        return 0;
}