From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/x86/include/asm/pc-conf-reg.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 arch/x86/include/asm/pc-conf-reg.h (limited to 'arch/x86/include/asm/pc-conf-reg.h') diff --git a/arch/x86/include/asm/pc-conf-reg.h b/arch/x86/include/asm/pc-conf-reg.h new file mode 100644 index 000000000..56bceceac --- /dev/null +++ b/arch/x86/include/asm/pc-conf-reg.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Support for the configuration register space at port I/O locations + * 0x22 and 0x23 variously used by PC architectures, e.g. the MP Spec, + * Cyrix CPUs, numerous chipsets. + */ +#ifndef _ASM_X86_PC_CONF_REG_H +#define _ASM_X86_PC_CONF_REG_H + +#include +#include +#include + +#define PC_CONF_INDEX 0x22 +#define PC_CONF_DATA 0x23 + +#define PC_CONF_MPS_IMCR 0x70 + +extern raw_spinlock_t pc_conf_lock; + +static inline u8 pc_conf_get(u8 reg) +{ + outb(reg, PC_CONF_INDEX); + return inb(PC_CONF_DATA); +} + +static inline void pc_conf_set(u8 reg, u8 data) +{ + outb(reg, PC_CONF_INDEX); + outb(data, PC_CONF_DATA); +} + +#endif /* _ASM_X86_PC_CONF_REG_H */ -- cgit v1.2.3