| /* |
| * (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 */ |
