linuxkpi: Add asm/processor.h

Also fill the boot_cpu_data struct as drm needs it.

Reviewed by:	bz
Obtained from:	drm-kmod
Sponsored by:	Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D36107
This commit is contained in:
Emmanuel Vadot 2022-08-09 14:21:09 +02:00
parent 9202c95f47
commit b2c860060c
2 changed files with 50 additions and 0 deletions

View File

@ -0,0 +1,46 @@
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021 Vladimir Kondratyev <wulf@FreeBSD.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LINUXKPI_ASM_PROCESSOR_H_
#define _LINUXKPI_ASM_PROCESSOR_H_
#include <sys/types.h>
#include <machine/cpufunc.h>
#include <machine/cpu.h>
#if defined(__i386__) || defined(__amd64__)
struct cpuinfo_x86 {
uint8_t x86;
uint16_t x86_clflush_size;
};
#define cpu_relax() cpu_spinwait()
extern struct cpuinfo_x86 boot_cpu_data;
#endif
#endif /* _LINUXKPI_ASM_PROCESSOR_H_ */

View File

@ -97,6 +97,7 @@ __FBSDID("$FreeBSD$");
#if defined(__i386__) || defined(__amd64__)
#include <asm/smp.h>
#include <asm/processor.h>
#endif
SYSCTL_NODE(_compat, OID_AUTO, linuxkpi, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
@ -2730,6 +2731,7 @@ io_mapping_create_wc(resource_size_t base, unsigned long size)
#if defined(__i386__) || defined(__amd64__)
bool linux_cpu_has_clflush;
struct cpuinfo_x86 boot_cpu_data;
#endif
static void
@ -2740,6 +2742,8 @@ linux_compat_init(void *arg)
#if defined(__i386__) || defined(__amd64__)
linux_cpu_has_clflush = (cpu_feature & CPUID_CLFSH);
boot_cpu_data.x86_clflush_size = cpu_clflush_line_size;
boot_cpu_data.x86 = ((cpu_id & 0xf0000) >> 12) | ((cpu_id & 0xf0) >> 4);
#endif
rw_init(&linux_vma_lock, "lkpi-vma-lock");