1 /* Blackfin Direct Memory Access (DMA) Channel model. 2 3 Copyright (C) 2010-2024 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 /* DMA_CONFIG Masks */ 25 #define DMAEN 0x0001 /* DMA Channel Enable */ 26 #define WNR 0x0002 /* Channel Direction (W/R*) */ 27 #define WDSIZE_8 0x0000 /* Transfer Word Size = 8 */ 28 #define WDSIZE_16 0x0004 /* Transfer Word Size = 16 */ 29 #define WDSIZE_32 0x0008 /* Transfer Word Size = 32 */ 30 #define WDSIZE 0x000c /* Transfer Word Size */ 31 #define DMA2D 0x0010 /* DMA Mode (2D/1D*) */ 32 #define RESTART 0x0020 /* DMA Buffer Clear */ 33 #define DI_SEL 0x0040 /* Data Interrupt Timing Select */ 34 #define DI_EN 0x0080 /* Data Interrupt Enable */ 35 #define NDSIZE_0 0x0000 /* Next Descriptor Size = 0 (Stop/Autobuffer) */ 36 #define NDSIZE_1 0x0100 /* Next Descriptor Size = 1 */ 37 #define NDSIZE_2 0x0200 /* Next Descriptor Size = 2 */ 38 #define NDSIZE_3 0x0300 /* Next Descriptor Size = 3 */ 39 #define NDSIZE_4 0x0400 /* Next Descriptor Size = 4 */ 40 #define NDSIZE_5 0x0500 /* Next Descriptor Size = 5 */ 41 #define NDSIZE_6 0x0600 /* Next Descriptor Size = 6 */ 42 #define NDSIZE_7 0x0700 /* Next Descriptor Size = 7 */ 43 #define NDSIZE_8 0x0800 /* Next Descriptor Size = 8 */ 44 #define NDSIZE_9 0x0900 /* Next Descriptor Size = 9 */ 45 #define NDSIZE 0x0f00 /* Next Descriptor Size */ 46 #define NDSIZE_SHIFT 8 47 #define DMAFLOW 0x7000 /* Flow Control */ 48 #define DMAFLOW_STOP 0x0000 /* Stop Mode */ 49 #define DMAFLOW_AUTO 0x1000 /* Autobuffer Mode */ 50 #define DMAFLOW_ARRAY 0x4000 /* Descriptor Array Mode */ 51 #define DMAFLOW_SMALL 0x6000 /* Small Model Descriptor List Mode */ 52 #define DMAFLOW_LARGE 0x7000 /* Large Model Descriptor List Mode */ 53 54 /* DMA_IRQ_STATUS Masks */ 55 #define DMA_DONE 0x0001 /* DMA Completion Interrupt Status */ 56 #define DMA_ERR 0x0002 /* DMA Error Interrupt Status */ 57 #define DFETCH 0x0004 /* DMA Descriptor Fetch Indicator */ 58 #define DMA_RUN 0x0008 /* DMA Channel Running Indicator */ 59 60 /* DMA_PERIPHERAL_MAP Masks */ 61 #define CTYPE (1 << 6) 62 63 #endif 64