sim/bfin/dv-bfin_dma.h

   1 /* Blackfin Direct Memory Access (DMA) Channel model.
   2
   3    Copyright (C) 2010-2011 Free Software Foundation, Inc.
   4    Contributed by Analog Devices, Inc.
   5
   6    This file is part of simulators.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef DV_BFIN_DMA_H
  22 #define DV_BFIN_DMA_H
  23
  24 #define BFIN_MMR_DMA_SIZE       (4 * 16)
  25
  26 /* DMA_CONFIG Masks */
  27 #define DMAEN           0x0001  /* DMA Channel Enable */
  28 #define WNR             0x0002  /* Channel Direction (W/R*) */
  29 #define WDSIZE_8        0x0000  /* Transfer Word Size = 8 */
  30 #define WDSIZE_16       0x0004  /* Transfer Word Size = 16 */
  31 #define WDSIZE_32       0x0008  /* Transfer Word Size = 32 */
  32 #define WDSIZE          0x000c  /* Transfer Word Size */
  33 #define DMA2D           0x0010  /* DMA Mode (2D/1D*) */
  34 #define RESTART         0x0020  /* DMA Buffer Clear */
  35 #define DI_SEL          0x0040  /* Data Interrupt Timing Select */
  36 #define DI_EN           0x0080  /* Data Interrupt Enable */
  37 #define NDSIZE_0        0x0000  /* Next Descriptor Size = 0 (Stop/Autobuffer) */
  38 #define NDSIZE_1        0x0100  /* Next Descriptor Size = 1 */
  39 #define NDSIZE_2        0x0200  /* Next Descriptor Size = 2 */
  40 #define NDSIZE_3        0x0300  /* Next Descriptor Size = 3 */
  41 #define NDSIZE_4        0x0400  /* Next Descriptor Size = 4 */
  42 #define NDSIZE_5        0x0500  /* Next Descriptor Size = 5 */
  43 #define NDSIZE_6        0x0600  /* Next Descriptor Size = 6 */
  44 #define NDSIZE_7        0x0700  /* Next Descriptor Size = 7 */
  45 #define NDSIZE_8        0x0800  /* Next Descriptor Size = 8 */
  46 #define NDSIZE_9        0x0900  /* Next Descriptor Size = 9 */
  47 #define NDSIZE          0x0f00  /* Next Descriptor Size */
  48 #define NDSIZE_SHIFT    8
  49 #define DMAFLOW         0x7000  /* Flow Control */
  50 #define DMAFLOW_STOP    0x0000  /* Stop Mode */
  51 #define DMAFLOW_AUTO    0x1000  /* Autobuffer Mode */
  52 #define DMAFLOW_ARRAY   0x4000  /* Descriptor Array Mode */
  53 #define DMAFLOW_SMALL   0x6000  /* Small Model Descriptor List Mode */
  54 #define DMAFLOW_LARGE   0x7000  /* Large Model Descriptor List Mode */
  55
  56 /* DMA_IRQ_STATUS Masks */
  57 #define DMA_DONE        0x0001  /* DMA Completion Interrupt Status */
  58 #define DMA_ERR         0x0002  /* DMA Error Interrupt Status */
  59 #define DFETCH          0x0004  /* DMA Descriptor Fetch Indicator */
  60 #define DMA_RUN         0x0008  /* DMA Channel Running Indicator */
  61
  62 /* DMA_PERIPHERAL_MAP Masks */
  63 #define CTYPE           (1 << 6)
  64
  65 #endif