include/mpc5xxx_sdma.h

   1 /*
   2  * (C) Copyright 2003
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * This file is based on code
   6  * (C) Copyright Motorola, Inc., 2000
   7  *
   8  * odin smartdma header file
   9  */
  10
  11 #ifndef __MPC5XXX_SDMA_H
  12 #define __MPC5XXX_SDMA_H
  13
  14 #include <common.h>
  15 #include <mpc5xxx.h>
  16
  17 /* Task number assignment */
  18 #define FEC_RECV_TASK_NO            0
  19 #define FEC_XMIT_TASK_NO            1
  20
  21 /*---------------------------------------------------------------------*/
  22
  23 /* Stuff for Ethernet Tx/Rx tasks                                      */
  24
  25 /*---------------------------------------------------------------------*/
  26
  27 /* Layout of Ethernet controller Parameter SRAM area:
  28 ----------------------------------------------------------------
  29 0x00: TBD_BASE, base address of TX BD ring
  30 0x04: TBD_NEXT, address of next TX BD to be processed
  31 0x08: RBD_BASE, base address of RX BD ring
  32 0x0C: RBD_NEXT, address of next RX BD to be processed
  33 ---------------------------------------------------------------
  34 ALL PARAMETERS ARE ALL LONGWORDS (FOUR BYTES EACH).
  35 */
  36
  37 /* base address of SRAM area to store parameters used by Ethernet tasks */
  38 #define FEC_PARAM_BASE          (MPC5XXX_SRAM + 0x0800)
  39
  40 /* base address of SRAM area for buffer descriptors */
  41 #define FEC_BD_BASE             (MPC5XXX_SRAM + 0x0820)
  42
  43 /*---------------------------------------------------------------------*/
  44
  45 /* common shortcuts  used  by driver C code                            */
  46
  47 /*---------------------------------------------------------------------*/
  48
  49 /* Disable SmartDMA task */
  50 #define SDMA_TASK_DISABLE(tasknum)                     \
  51 {                                                      \
  52     volatile ushort *tcr = (ushort *)(MPC5XXX_SDMA + 0x0000001c + 2 * tasknum); \
  53     *tcr = (*tcr) & (~0x8000);                         \
  54 }
  55
  56 /* Enable SmartDMA task */
  57 #define SDMA_TASK_ENABLE(tasknum)                      \
  58 {                                                      \
  59     volatile ushort *tcr = (ushort *) (MPC5XXX_SDMA + 0x0000001c + 2 * tasknum); \
  60     *tcr = (*tcr)  | 0x8000;                           \
  61 }
  62
  63 /* Enable interrupt */
  64 #define SDMA_INT_ENABLE(tasknum)                       \
  65 {                                                      \
  66     struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA; \
  67     sdma->IntMask &= ~(1 << tasknum);                  \
  68 }
  69
  70 /* Disable interrupt */
  71 #define SDMA_INT_DISABLE(tasknum)   \
  72 {                                                      \
  73     struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA; \
  74     sdma->IntMask |= (1 << tasknum);                   \
  75 }
  76
  77
  78 /* Clear interrupt pending bits */
  79 #define SDMA_CLEAR_IEVENT(tasknum)  \
  80 {                                                      \
  81     struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA; \
  82     sdma->IntPend = (1 << tasknum);                    \
  83 }
  84
  85 /* get interrupt pending bit of a task */
  86 #define SDMA_GET_PENDINGBIT(tasknum)                   \
  87         ((*(vu_long *)(MPC5XXX_SDMA + 0x14)) & (1<<(tasknum)))
  88
  89 /* get interrupt mask bit of a task */
  90 #define SDMA_GET_MASKBIT(tasknum)                      \
  91         ((*(vu_long *)(MPC5XXX_SDMA + 0x18)) & (1<<(tasknum)))
  92
  93 #endif  /* __MPC5XXX_SDMA_H */