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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_IA64_XTP_H
#define _ASM_IA64_XTP_H
#include <asm/io.h>
#ifdef CONFIG_SMP
#define XTP_OFFSET 0x1e0008
#define SMP_IRQ_REDIRECTION (1 << 0)
#define SMP_IPI_REDIRECTION (1 << 1)
extern unsigned char smp_int_redirect;
/*
* XTP control functions:
* min_xtp : route all interrupts to this CPU
* normal_xtp: nominal XTP value
* max_xtp : never deliver interrupts to this CPU.
*/
static inline void
min_xtp (void)
{
if (smp_int_redirect & SMP_IRQ_REDIRECTION)
writeb(0x00, ipi_base_addr + XTP_OFFSET); /* XTP to min */
}
static inline void
normal_xtp (void)
{
if (smp_int_redirect & SMP_IRQ_REDIRECTION)
writeb(0x08, ipi_base_addr + XTP_OFFSET); /* XTP normal */
}
static inline void
max_xtp (void)
{
if (smp_int_redirect & SMP_IRQ_REDIRECTION)
writeb(0x0f, ipi_base_addr + XTP_OFFSET); /* Set XTP to max */
}
#endif /* CONFIG_SMP */
#endif /* _ASM_IA64_XTP_Hy */