diff --git a/sys/compat/linuxkpi/common/include/asm/fpu/api.h b/sys/compat/linuxkpi/common/include/asm/fpu/api.h new file mode 100644 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/asm/fpu/api.h @@ -0,0 +1,68 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2020 Greg V + * + * 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 AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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 _FPU_API_H_ +#define _FPU_API_H_ + +#if defined(__aarch64__) || defined(__amd64__) || defined(__i386__) + +#include + +extern struct fpu_kern_ctx *__lkpi_fpu_ctx; +extern unsigned int __lkpi_fpu_ctx_level; + +static inline void +kernel_fpu_begin() +{ + if (__lkpi_fpu_ctx_level++ == 0) { + fpu_kern_enter(curthread, __lkpi_fpu_ctx, FPU_KERN_NORMAL); + } +} + +static inline void +kernel_fpu_end() +{ + if (--__lkpi_fpu_ctx_level == 0) { + fpu_kern_leave(curthread, __lkpi_fpu_ctx); + } +} + +#else + +static inline void +kernel_fpu_begin() +{ +} + +static inline void +kernel_fpu_end() +{ +} + +#endif + +#endif /* _FPU_API_H_ */ diff --git a/sys/compat/linuxkpi/common/src/linux_fpu.c b/sys/compat/linuxkpi/common/src/linux_fpu.c new file mode 100644 --- /dev/null +++ b/sys/compat/linuxkpi/common/src/linux_fpu.c @@ -0,0 +1,50 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * Copyright (c) 2020 Greg V + * + * 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 AUTHORS AND CONTRIBUTORS ``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 AUTHORS OR CONTRIBUTORS 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. + */ + +#include +#include +#include +#include + +#include + +struct fpu_kern_ctx *__lkpi_fpu_ctx; +unsigned int __lkpi_fpu_ctx_level = 0; + +static void +linux_fpu_init(void *arg __unused) +{ + __lkpi_fpu_ctx = fpu_kern_alloc_ctx(0); +} +SYSINIT(linux_fpu, SI_SUB_EVENTHANDLER, SI_ORDER_SECOND, linux_fpu_init, NULL); + +static void +linux_fpu_uninit(void *arg __unused) +{ + fpu_kern_free_ctx(__lkpi_fpu_ctx); +} +SYSUNINIT(linux_fpu, SI_SUB_EVENTHANDLER, SI_ORDER_SECOND, linux_fpu_uninit, NULL); diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64 --- a/sys/conf/files.amd64 +++ b/sys/conf/files.amd64 @@ -462,6 +462,9 @@ x86/xen/pvcpu_enum.c optional xenhvm x86/xen/xen_pci_bus.c optional xenhvm +compat/linuxkpi/common/src/linux_fpu.c optional compat_linuxkpi \ + compile-with "${LINUXKPI_C}" + contrib/openzfs/module/zcommon/zfs_fletcher_avx512.c optional zfs compile-with "${ZFS_C}" contrib/openzfs/module/zcommon/zfs_fletcher_intel.c optional zfs compile-with "${ZFS_C}" contrib/openzfs/module/zcommon/zfs_fletcher_sse.c optional zfs compile-with "${ZFS_C}" diff --git a/sys/conf/files.arm64 b/sys/conf/files.arm64 --- a/sys/conf/files.arm64 +++ b/sys/conf/files.arm64 @@ -494,3 +494,6 @@ compile-with "${NORMAL_FW}" \ no-obj no-implicit-rule \ clean "tegra210_xusb.fw" + +compat/linuxkpi/common/src/linux_fpu.c optional compat_linuxkpi \ + compile-with "${LINUXKPI_C}" diff --git a/sys/conf/files.i386 b/sys/conf/files.i386 --- a/sys/conf/files.i386 +++ b/sys/conf/files.i386 @@ -241,3 +241,6 @@ x86/x86/mptable.c optional apic x86/x86/mptable_pci.c optional apic pci x86/x86/msi.c optional apic pci + +compat/linuxkpi/common/src/linux_fpu.c optional compat_linuxkpi \ + compile-with "${LINUXKPI_C}" diff --git a/sys/modules/linuxkpi/Makefile b/sys/modules/linuxkpi/Makefile --- a/sys/modules/linuxkpi/Makefile +++ b/sys/modules/linuxkpi/Makefile @@ -26,7 +26,7 @@ .if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \ ${MACHINE_CPUARCH} == "i386" -SRCS+= opt_acpi.h acpi_if.h linux_acpi.c +SRCS+= opt_acpi.h acpi_if.h linux_acpi.c linux_fpu.c .endif SRCS+= ${LINUXKPI_GENSRCS}