Eric Lee / smarc-uboot

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include/mpc5xxx_sdma.h 3.11 KB
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945af8d72   wdenk   * Add support for... 
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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
   *
   * odin smartdma header file
   */
  
  #ifndef __MPC5XXX_SDMA_H
  #define __MPC5XXX_SDMA_H
  
  #include <common.h>
  #include <mpc5xxx.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		(MPC5XXX_SRAM + 0x0800)
  
  /* base address of SRAM area for buffer descriptors */
  #define FEC_BD_BASE		(MPC5XXX_SRAM + 0x0820)
  
  /*---------------------------------------------------------------------*/
  
  /* common shortcuts  used  by driver C code                            */
  
  /*---------------------------------------------------------------------*/
  
  /* Disable SmartDMA task */
  #define SDMA_TASK_DISABLE(tasknum)                     \
  {                                                      \
      volatile ushort *tcr = (ushort *)(MPC5XXX_SDMA + 0x0000001c + 2 * tasknum); \
      *tcr = (*tcr) & (~0x8000);                         \
  }
  
  /* Enable SmartDMA task */
  #define SDMA_TASK_ENABLE(tasknum)                      \
  {                                                      \
      volatile ushort *tcr = (ushort *) (MPC5XXX_SDMA + 0x0000001c + 2 * tasknum); \
      *tcr = (*tcr)  | 0x8000;                           \
  }
  
  /* Enable interrupt */
  #define SDMA_INT_ENABLE(tasknum)                       \
  {                                                      \
      struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA; \
      sdma->IntMask &= ~(1 << tasknum);                  \
  }
  
  /* Disable interrupt */
  #define SDMA_INT_DISABLE(tasknum)   \
  {                                                      \
      struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA; \
      sdma->IntMask |= (1 << tasknum);                   \
  }
  
  
  /* Clear interrupt pending bits */
  #define SDMA_CLEAR_IEVENT(tasknum)  \
  {                                                      \
      struct mpc5xxx_sdma *sdma = (struct mpc5xxx_sdma *)MPC5XXX_SDMA; \
      sdma->IntPend = (1 << tasknum);                    \
  }
162630879   Mike Williams   cleanup: Fix typo... 
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  /* get interrupt pending bit of a task */
945af8d72   wdenk   * Add support for... 
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  #define SDMA_GET_PENDINGBIT(tasknum)                   \
  	((*(vu_long *)(MPC5XXX_SDMA + 0x14)) & (1<<(tasknum)))
162630879   Mike Williams   cleanup: Fix typo... 
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  /* get interrupt mask bit of a task */
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  #define SDMA_GET_MASKBIT(tasknum)                      \
  	((*(vu_long *)(MPC5XXX_SDMA + 0x18)) & (1<<(tasknum)))
  
  #endif	/* __MPC5XXX_SDMA_H */