/*
 * Copyright (c) 2008 Carsten Schlote <c.schlote@konzeptpark.de>
 * See file CREDITS for list of people who contributed to this project.
 *
 * This file is part of barebox.
 *
 * barebox 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 3 of the License, or
 * (at your option) any later version.
 *
 * barebox 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 barebox.  If not, see <http://www.gnu.org/licenses/>.
 */

/** @file
 *  Declaration of support function used with the MultiChannel DMA
 */
#ifndef _DMA_UTILS_H_
#define _DMA_UTILS_H_


void   dma_irq_enable(uint8_t, uint8_t);
void   dma_irq_disable(void);
int    dma_set_initiator(int);
uint32_t dma_get_initiator(int);
void   dma_free_initiator(int);
int    dma_set_channel(int, void (*)(void));
int    dma_get_channel(int);
void   dma_free_channel(int);
int    dma_interrupt_handler(void *, void *);

/*
 * Create identifiers for each initiator/requestor
 */
#define DMA_ALWAYS      (0)
#define DMA_DSPI_RX     (1)
#define DMA_DSPI_TX     (2)
#define DMA_DREQ0       (3)
#define DMA_PSC0_RX     (4)
#define DMA_PSC0_TX     (5)
#define DMA_USBEP0      (6)
#define DMA_USBEP1      (7)
#define DMA_USBEP2      (8)
#define DMA_USBEP3      (9)
#define DMA_PCI_TX      (10)
#define DMA_PCI_RX      (11)
#define DMA_PSC1_RX     (12)
#define DMA_PSC1_TX     (13)
#define DMA_I2C_RX      (14)
#define DMA_I2C_TX      (15)
#define DMA_FEC0_RX     (16)
#define DMA_FEC0_TX     (17)
#define DMA_FEC1_RX     (18)
#define DMA_FEC1_TX     (19)
#define DMA_DREQ1       (20)
#define DMA_CTM0        (21)
#define DMA_CTM1        (22)
#define DMA_CTM2        (23)
#define DMA_CTM3        (24)
#define DMA_CTM4        (25)
#define DMA_CTM5        (26)
#define DMA_CTM6        (27)
#define DMA_CTM7        (28)
#define DMA_USBEP4      (29)
#define DMA_USBEP5      (30)
#define DMA_USBEP6      (31)
#define DMA_PSC2_RX     (32)
#define DMA_PSC2_TX     (33)
#define DMA_PSC3_RX     (34)
#define DMA_PSC3_TX     (35)
#define DMA_FEC_RX(x)   ((x == 0) ? DMA_FEC0_RX : DMA_FEC1_RX)
#define DMA_FEC_TX(x)   ((x == 0) ? DMA_FEC0_TX : DMA_FEC1_TX)

#endif /* _DMA_UTILS_H_ */