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Diffstat (limited to 'include/asm-blackfin/dma.h')
| -rw-r--r-- | include/asm-blackfin/dma.h | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/include/asm-blackfin/dma.h b/include/asm-blackfin/dma.h deleted file mode 100644 index c0d5259e315..00000000000 --- a/include/asm-blackfin/dma.h +++ /dev/null @@ -1,197 +0,0 @@ -/* - * File: include/asm-blackfin/simple_bf533_dma.h - * Based on: none - original work - * Author: LG Soft India - * Copyright (C) 2004-2005 Analog Devices Inc. - * Created: Tue Sep 21 2004 - * Description: This file contains the major Data structures and constants - * used for DMA Implementation in BF533 - * Modified: - * - * Bugs: Enter bugs at http://blackfin.uclinux.org/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; see the file COPYING. - * If not, write to the Free Software Foundation, - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -#ifndef _BLACKFIN_DMA_H_ -#define _BLACKFIN_DMA_H_ - -#include <asm/io.h> -#include <linux/slab.h> -#include <asm/irq.h> -#include <asm/signal.h> - -#include <linux/kernel.h> -#include <asm/mach/dma.h> -#include <linux/mm.h> -#include <linux/interrupt.h> -#include <asm/blackfin.h> - -#define MAX_DMA_ADDRESS PAGE_OFFSET - -/***************************************************************************** -* Generic DMA Declarations -* -****************************************************************************/ -enum dma_chan_status { - DMA_CHANNEL_FREE, - DMA_CHANNEL_REQUESTED, - DMA_CHANNEL_ENABLED, -}; - -/*------------------------- - * config reg bits value - *-------------------------*/ -#define DATA_SIZE_8 0 -#define DATA_SIZE_16 1 -#define DATA_SIZE_32 2 - -#define DMA_FLOW_STOP 0 -#define DMA_FLOW_AUTO 1 -#define DMA_FLOW_ARRAY 4 -#define DMA_FLOW_SMALL 6 -#define DMA_FLOW_LARGE 7 - -#define DIMENSION_LINEAR 0 -#define DIMENSION_2D 1 - -#define DIR_READ 0 -#define DIR_WRITE 1 - -#define INTR_DISABLE 0 -#define INTR_ON_BUF 2 -#define INTR_ON_ROW 3 - -#define DMA_NOSYNC_KEEP_DMA_BUF 0 -#define DMA_SYNC_RESTART 1 - -struct dmasg { - unsigned long next_desc_addr; - unsigned long start_addr; - unsigned short cfg; - unsigned short x_count; - short x_modify; - unsigned short y_count; - short y_modify; -} __attribute__((packed)); - -struct dma_register { - unsigned long next_desc_ptr; /* DMA Next Descriptor Pointer register */ - unsigned long start_addr; /* DMA Start address register */ - - unsigned short cfg; /* DMA Configuration register */ - unsigned short dummy1; /* DMA Configuration register */ - - unsigned long reserved; - - unsigned short x_count; /* DMA x_count register */ - unsigned short dummy2; - - short x_modify; /* DMA x_modify register */ - unsigned short dummy3; - - unsigned short y_count; /* DMA y_count register */ - unsigned short dummy4; - - short y_modify; /* DMA y_modify register */ - unsigned short dummy5; - - unsigned long curr_desc_ptr; /* DMA Current Descriptor Pointer - register */ - unsigned long curr_addr_ptr; /* DMA Current Address Pointer - register */ - unsigned short irq_status; /* DMA irq status register */ - unsigned short dummy6; - - unsigned short peripheral_map; /* DMA peripheral map register */ - unsigned short dummy7; - - unsigned short curr_x_count; /* DMA Current x-count register */ - unsigned short dummy8; - - unsigned long reserved2; - - unsigned short curr_y_count; /* DMA Current y-count register */ - unsigned short dummy9; - - unsigned long reserved3; - -}; - -typedef irqreturn_t(*dma_interrupt_t) (int irq, void *dev_id); - -struct dma_channel { - struct mutex dmalock; - char *device_id; - enum dma_chan_status chan_status; - struct dma_register *regs; - struct dmasg *sg; /* large mode descriptor */ - unsigned int ctrl_num; /* controller number */ - dma_interrupt_t irq_callback; - void *data; - unsigned int dma_enable_flag; - unsigned int loopback_flag; -}; - -/******************************************************************************* -* DMA API's -*******************************************************************************/ -/* functions to set register mode */ -void set_dma_start_addr(unsigned int channel, unsigned long addr); -void set_dma_next_desc_addr(unsigned int channel, unsigned long addr); -void set_dma_curr_desc_addr(unsigned int channel, unsigned long addr); -void set_dma_x_count(unsigned int channel, unsigned short x_count); -void set_dma_x_modify(unsigned int channel, short x_modify); -void set_dma_y_count(unsigned int channel, unsigned short y_count); -void set_dma_y_modify(unsigned int channel, short y_modify); -void set_dma_config(unsigned int channel, unsigned short config); -unsigned short set_bfin_dma_config(char direction, char flow_mode, - char intr_mode, char dma_mode, char width, - char syncmode); -void set_dma_curr_addr(unsigned int channel, unsigned long addr); - -/* get curr status for polling */ -unsigned short get_dma_curr_irqstat(unsigned int channel); -unsigned short get_dma_curr_xcount(unsigned int channel); -unsigned short get_dma_curr_ycount(unsigned int channel); -unsigned long get_dma_next_desc_ptr(unsigned int channel); -unsigned long get_dma_curr_desc_ptr(unsigned int channel); -unsigned long get_dma_curr_addr(unsigned int channel); - -/* set large DMA mode descriptor */ -void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg); - -/* check if current channel is in use */ -int dma_channel_active(unsigned int channel); - -/* common functions must be called in any mode */ -void free_dma(unsigned int channel); -int dma_channel_active(unsigned int channel); /* check if a channel is in use */ -void disable_dma(unsigned int channel); -void enable_dma(unsigned int channel); -int request_dma(unsigned int channel, char *device_id); -int set_dma_callback(unsigned int channel, dma_interrupt_t callback, - void *data); -void dma_disable_irq(unsigned int channel); -void dma_enable_irq(unsigned int channel); -void clear_dma_irqstat(unsigned int channel); -void *dma_memcpy(void *dest, const void *src, size_t count); -void *safe_dma_memcpy(void *dest, const void *src, size_t count); - -extern int channel2irq(unsigned int channel); -extern struct dma_register *dma_io_base_addr[MAX_BLACKFIN_DMA_CHANNEL]; - -#endif |