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/*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* This file is based on code
* (C) Copyright Motorola, Inc., 2000
*
* MPC8220 dma header file
*/
#ifndef __MPC8220_DMA_H
#define __MPC8220_DMA_H
#include <common.h>
#include <mpc8220.h>
/* Task number assignment */
#define FEC_RECV_TASK_NO 0
#define FEC_XMIT_TASK_NO 1
/*---------------------------------------------------------------------
* Stuff for Ethernet Tx/Rx tasks
*---------------------------------------------------------------------
*/
/* Layout of Ethernet controller Parameter SRAM area:
* ----------------------------------------------------------------
* 0x00: TBD_BASE, base address of TX BD ring
* 0x04: TBD_NEXT, address of next TX BD to be processed
* 0x08: RBD_BASE, base address of RX BD ring
* 0x0C: RBD_NEXT, address of next RX BD to be processed
* ---------------------------------------------------------------
* ALL PARAMETERS ARE ALL LONGWORDS (FOUR BYTES EACH).
*/
/* base address of SRAM area to store parameters used by Ethernet tasks */
#define FEC_PARAM_BASE (MMAP_SRAM + 0x5b00)
/* base address of SRAM area for buffer descriptors */
#define FEC_BD_BASE (MMAP_SRAM + 0x5b20)
/*---------------------------------------------------------------------
* common shortcuts used by driver C code
*---------------------------------------------------------------------
*/
/* Disable SmartDMA task */
#define DMA_TASK_DISABLE(tasknum) \
{ \
volatile ushort *tcr = (ushort *)(MMAP_DMA + 0x0000001c + 2 * tasknum); \
*tcr = (*tcr) & (~0x8000); \
}
/* Enable SmartDMA task */
#define DMA_TASK_ENABLE(tasknum) \
{ \
volatile ushort *tcr = (ushort *) (MMAP_DMA + 0x0000001c + 2 * tasknum);\
*tcr = (*tcr) | 0x8000; \
}
/* Clear interrupt pending bits */
#define DMA_CLEAR_IEVENT(tasknum) \
{ \
struct mpc8220_dma *dma = (struct mpc8220_dma *)MMAP_DMA; \
dma->IntPend = (1 << tasknum); \
}
#endif /* __MPC8220_DMA_H */
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