1/* $Id: msi.h,v 1.1.1.1 2007/08/03 18:53:36 Exp $
2 * msi.h:  Defines specific to the MBus - Sbus - Interface.
3 *
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1996 Eddie C. Dost   (ecd@skynet.be)
6 */
7
8#ifndef _SPARC_MSI_H
9#define _SPARC_MSI_H
10
11/*
12 * Locations of MSI Registers.
13 */
14#define MSI_MBUS_ARBEN	0xe0001008	/* MBus Arbiter Enable register */
15
16/*
17 * Useful bits in the MSI Registers.
18 */
19#define MSI_ASYNC_MODE  0x80000000	/* Operate the MSI asynchronously */
20
21
22static inline void msi_set_sync(void)
23{
24	__asm__ __volatile__ ("lda [%0] %1, %%g3\n\t"
25			      "andn %%g3, %2, %%g3\n\t"
26			      "sta %%g3, [%0] %1\n\t" : :
27			      "r" (MSI_MBUS_ARBEN),
28			      "i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");
29}
30
31#endif /* !(_SPARC_MSI_H) */
32