LXR linux/drivers/net/wireless/mediatek/mt76/dma.h

   1/*
   2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   3 *
   4 * Permission to use, copy, modify, and/or distribute this software for any
   5 * purpose with or without fee is hereby granted, provided that the above
   6 * copyright notice and this permission notice appear in all copies.
   7 *
   8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15 */
  16#ifndef __MT76_DMA_H
  17#define __MT76_DMA_H
  18
  19#define MT_RING_SIZE                    0x10
  20
  21#define MT_DMA_CTL_SD_LEN1              GENMASK(13, 0)
  22#define MT_DMA_CTL_LAST_SEC1            BIT(14)
  23#define MT_DMA_CTL_BURST                BIT(15)
  24#define MT_DMA_CTL_SD_LEN0              GENMASK(29, 16)
  25#define MT_DMA_CTL_LAST_SEC0            BIT(30)
  26#define MT_DMA_CTL_DMA_DONE             BIT(31)
  27
  28struct mt76_desc {
  29        __le32 buf0;
  30        __le32 ctrl;
  31        __le32 buf1;
  32        __le32 info;
  33} __packed __aligned(4);
  34
  35int mt76_dma_attach(struct mt76_dev *dev);
  36void mt76_dma_cleanup(struct mt76_dev *dev);
  37
  38#endif
  39