32 lines
735 B
C
32 lines
735 B
C
|
/*
|
||
|
|
* 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) */
|