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_bo9039.c (3175B)

      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/push906f.h>
     34
     35#include <nvhw/class/cl9039.h>
     36
     37int
     38nvc0_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo,
     39		  struct ttm_resource *old_reg, struct ttm_resource *new_reg)
     40{
     41	struct nvif_push *push = chan->chan.push;
     42	struct nouveau_mem *mem = nouveau_mem(old_reg);
     43	u64 src_offset = mem->vma[0].addr;
     44	u64 dst_offset = mem->vma[1].addr;
     45	u32 page_count = new_reg->num_pages;
     46	int ret;
     47
     48	page_count = new_reg->num_pages;
     49	while (page_count) {
     50		int line_count = (page_count > 2047) ? 2047 : page_count;
     51
     52		ret = PUSH_WAIT(push, 12);
     53		if (ret)
     54			return ret;
     55
     56		PUSH_MTHD(push, NV9039, OFFSET_OUT_UPPER,
     57			  NVVAL(NV9039, OFFSET_OUT_UPPER, VALUE, upper_32_bits(dst_offset)),
     58
     59					OFFSET_OUT, lower_32_bits(dst_offset));
     60
     61		PUSH_MTHD(push, NV9039, OFFSET_IN_UPPER,
     62			  NVVAL(NV9039, OFFSET_IN_UPPER, VALUE, upper_32_bits(src_offset)),
     63
     64					OFFSET_IN, lower_32_bits(src_offset),
     65					PITCH_IN, PAGE_SIZE,
     66					PITCH_OUT, PAGE_SIZE,
     67					LINE_LENGTH_IN, PAGE_SIZE,
     68					LINE_COUNT, line_count);
     69
     70		PUSH_MTHD(push, NV9039, LAUNCH_DMA,
     71			  NVDEF(NV9039, LAUNCH_DMA, SRC_INLINE, FALSE) |
     72			  NVDEF(NV9039, LAUNCH_DMA, SRC_MEMORY_LAYOUT, PITCH) |
     73			  NVDEF(NV9039, LAUNCH_DMA, DST_MEMORY_LAYOUT, PITCH) |
     74			  NVDEF(NV9039, LAUNCH_DMA, COMPLETION_TYPE, FLUSH_DISABLE) |
     75			  NVDEF(NV9039, LAUNCH_DMA, INTERRUPT_TYPE, NONE) |
     76			  NVDEF(NV9039, LAUNCH_DMA, SEMAPHORE_STRUCT_SIZE, ONE_WORD));
     77
     78		page_count -= line_count;
     79		src_offset += (PAGE_SIZE * line_count);
     80		dst_offset += (PAGE_SIZE * line_count);
     81	}
     82
     83	return 0;
     84}
     85
     86int
     87nvc0_bo_move_init(struct nouveau_channel *chan, u32 handle)
     88{
     89	struct nvif_push *push = chan->chan.push;
     90	int ret;
     91
     92	ret = PUSH_WAIT(push, 2);
     93	if (ret)
     94		return ret;
     95
     96	PUSH_MTHD(push, NV9039, SET_OBJECT, handle);
     97	return 0;
     98}