/* $Id: msi.h,v 1.3 1996/08/29 09:48:25 davem Exp $
   * msi.h:  Defines specific to the MBus - Sbus - Interface.
   *
   * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
   * Copyright (C) 1996 Eddie C. Dost   (ecd@skynet.be)
   */
  
  #ifndef _SPARC_MSI_H
  #define _SPARC_MSI_H
  
  /*
   * Locations of MSI Registers.
   */
  #define MSI_MBUS_ARBEN	0xe0001008	/* MBus Arbiter Enable register */
  
  /*
   * Useful bits in the MSI Registers.
   */
  #define MSI_ASYNC_MODE  0x80000000	/* Operate the MSI asynchronously */

  static inline void msi_set_sync(void)

  {
  	__asm__ __volatile__ ("lda [%0] %1, %%g3
  \t"
  			      "andn %%g3, %2, %%g3
  \t"
  			      "sta %%g3, [%0] %1
  \t" : :
  			      "r" (MSI_MBUS_ARBEN),
  			      "i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");
  }
  
  #endif /* !(_SPARC_MSI_H) */