drivers/gpu/drm/nouveau/nouveau_bo0039.c

   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
  37 static inline uint32_t
  38 nouveau_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
  46 int
  47 nv04_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
  96 int
  97 nv04_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 }