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/* $Id: msi.h,v 1.1 2005-12-20 11:32:11 jcastillo 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@pool.informatik.rwth-aachen.de)

 */

#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 */

extern inline void msi_set_sync(void)

{

        __asm__ __volatile__ ("lda [%0] %1, %%g3\n\t"

                              "andn %%g3, %2, %%g3\n\t"

                              "sta %%g3, [%0] %1\n\t" : :

                              "r" (MSI_MBUS_ARBEN),

                              "i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");

}

#endif /* !(_SPARC_MSI_H) */