1 /* $Id: msi.h,v 1.3 1996/08/29 09:48:25 davem Exp $
2 * msi.h: Defines specific to the MBus - Sbus - Interface.
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
12 * Locations of MSI Registers.
14 #define MSI_MBUS_ARBEN 0xe0001008 /* MBus Arbiter Enable register */
17 * Useful bits in the MSI Registers.
19 #define MSI_ASYNC_MODE 0x80000000 /* Operate the MSI asynchronously */
22 static inline void msi_set_sync(void)
24 __asm__
__volatile__ ("lda [%0] %1, %%g3\n\t"
25 "andn %%g3, %2, %%g3\n\t"
26 "sta %%g3, [%0] %1\n\t" : :
28 "i" (ASI_M_CTL
), "r" (MSI_ASYNC_MODE
) : "g3");
31 #endif /* !(_SPARC_MSI_H) */
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