[net-next-2.6.git] / arch / sparc / include / asm / msi.h

/*
 * 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) */
Commit	Line	Data
88278ca2	1	/*
1da177e4 LT	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) */