| /* $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\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) */ |
