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
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sys/compat/linuxkpi/common/include/asm/processor.h
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46
sys/compat/linuxkpi/common/include/asm/processor.h
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2021 Vladimir Kondratyev <wulf@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUXKPI_ASM_PROCESSOR_H_
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#define _LINUXKPI_ASM_PROCESSOR_H_
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#include <sys/types.h>
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#include <machine/cpufunc.h>
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#include <machine/cpu.h>
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#if defined(__i386__) || defined(__amd64__)
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struct cpuinfo_x86 {
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uint8_t x86;
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uint16_t x86_clflush_size;
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};
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#define cpu_relax() cpu_spinwait()
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extern struct cpuinfo_x86 boot_cpu_data;
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#endif
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#endif /* _LINUXKPI_ASM_PROCESSOR_H_ */
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@ -97,6 +97,7 @@ __FBSDID("$FreeBSD$");
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#if defined(__i386__) || defined(__amd64__)
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#include <asm/smp.h>
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#include <asm/processor.h>
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#endif
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SYSCTL_NODE(_compat, OID_AUTO, linuxkpi, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
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@ -2730,6 +2731,7 @@ io_mapping_create_wc(resource_size_t base, unsigned long size)
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#if defined(__i386__) || defined(__amd64__)
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bool linux_cpu_has_clflush;
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struct cpuinfo_x86 boot_cpu_data;
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#endif
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static void
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@ -2740,6 +2742,8 @@ linux_compat_init(void *arg)
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#if defined(__i386__) || defined(__amd64__)
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linux_cpu_has_clflush = (cpu_feature & CPUID_CLFSH);
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boot_cpu_data.x86_clflush_size = cpu_clflush_line_size;
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boot_cpu_data.x86 = ((cpu_id & 0xf0000) >> 12) | ((cpu_id & 0xf0) >> 4);
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#endif
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rw_init(&linux_vma_lock, "lkpi-vma-lock");
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