cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

nouveau_bo85b5.c (2520B)

      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_mem.h"
     32
     33#include <nvif/push206e.h>
     34
     35/*XXX: Fixup class to be compatible with NVIDIA's, which will allow sharing
     36 *     code with KeplerDmaCopyA.
     37 */
     38
     39int
     40nva3_bo_move_copy(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
     41		  struct ttm_resource *old_reg, struct ttm_resource *new_reg)
     42{
     43	struct nouveau_mem *mem = nouveau_mem(old_reg);
     44	struct nvif_push *push = chan->chan.push;
     45	u64 src_offset = mem->vma[0].addr;
     46	u64 dst_offset = mem->vma[1].addr;
     47	u32 page_count = new_reg->num_pages;
     48	int ret;
     49
     50	page_count = new_reg->num_pages;
     51	while (page_count) {
     52		int line_count = (page_count > 8191) ? 8191 : page_count;
     53
     54		ret = PUSH_WAIT(push, 11);
     55		if (ret)
     56			return ret;
     57
     58		PUSH_NVSQ(push, NV85B5, 0x030c, upper_32_bits(src_offset),
     59					0x0310, lower_32_bits(src_offset),
     60					0x0314, upper_32_bits(dst_offset),
     61					0x0318, lower_32_bits(dst_offset),
     62					0x031c, PAGE_SIZE,
     63					0x0320, PAGE_SIZE,
     64					0x0324, PAGE_SIZE,
     65					0x0328, line_count);
     66		PUSH_NVSQ(push, NV85B5, 0x0300, 0x00000110);
     67
     68		page_count -= line_count;
     69		src_offset += (PAGE_SIZE * line_count);
     70		dst_offset += (PAGE_SIZE * line_count);
     71	}
     72
     73	return 0;
     74}