LXR linux/drivers/gpu/drm/nouveau/nouveau

   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 = new_reg->num_pages;
  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 = new_reg->num_pages;
  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->drm->ntfy.handle);
 108        return 0;
 109}
 110