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1da177e4 LT |
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. | |
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 | ||
3115624e | 22 | static inline void msi_set_sync(void) |
1da177e4 LT |
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) */ |