mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-13 07:06:17 +07:00
b3545192e2
We want to remove the #include <asm/io.h> from <asm/smp.h>, but for this we have to move the XTP bits into a separate header first (as these bits rely on <asm/io.h> definitions), and include them in the .c files that rely on those APIs. Co-developed-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
47 lines
938 B
C
47 lines
938 B
C
/* 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 */
|