[mirror_ubuntu-focal-kernel.git] / arch / sparc / include / asm / msi.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * 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
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
88278ca2	2	/*
1da177e4 LT	3	* msi.h: Defines specific to the MBus - Sbus - Interface.
	4	*
	5	* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
	6	* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
	7	*/
	8
	9	#ifndef _SPARC_MSI_H
	10	#define _SPARC_MSI_H
	11
	12	/*
	13	* Locations of MSI Registers.
	14	*/
	15	#define MSI_MBUS_ARBEN 0xe0001008 /* MBus Arbiter Enable register */
	16
	17	/*
	18	* Useful bits in the MSI Registers.
	19	*/
	20	#define MSI_ASYNC_MODE 0x80000000 /* Operate the MSI asynchronously */
	21
	22
3115624e	23	static inline void msi_set_sync(void)
1da177e4 LT	24	{
	25	__asm__ __volatile__ ("lda [%0] %1, %%g3\n\t"
	26	"andn %%g3, %2, %%g3\n\t"
	27	"sta %%g3, [%0] %1\n\t" : :
	28	"r" (MSI_MBUS_ARBEN),
	29	"i" (ASI_M_CTL), "r" (MSI_ASYNC_MODE) : "g3");
	30	}
	31
	32	#endif /* !(_SPARC_MSI_H) */