msi.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- /* $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 */
- extern __inline__ void msi_set_sync(void)
- {
- __asm__ __volatile__ ("lda [%0] %1, %%g3nt"
- "andn %%g3, %2, %%g3nt"
- "sta %%g3, [%0] %1nt" : :
- "r" (MSI_MBUS_ARBEN),
- "i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");
- }
- #endif /* !(_SPARC_MSI_H) */