/* * Copyright (C) 2012 ARM Ltd. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef __ASM_FP_H #define __ASM_FP_H #include <asm/ptrace.h> #include <asm/errno.h> #ifndef __ASSEMBLY__ #include <linux/cache.h> #include <linux/stddef.h> /* * FP/SIMD storage area has: * - FPSR and FPCR * - 32 128-bit data registers * * Note that user_fpsimd forms a prefix of this structure, which is * relied upon in the ptrace FP/SIMD accessors. */ struct fpsimd_state { union { struct user_fpsimd_state user_fpsimd; struct { __uint128_t vregs[32]; u32 fpsr; u32 fpcr; /* * For ptrace compatibility, pad to next 128-bit * boundary here if extending this struct. */ }; }; /* the id of the last cpu to have restored this state */ unsigned int cpu; }; #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* Masks for extracting the FPSR and FPCR from the FPSCR */ #define VFP_FPSCR_STAT_MASK 0xf800009f #define VFP_FPSCR_CTRL_MASK 0x07f79f00 /* * The VFP state has 32x64-bit registers and a single 32-bit * control/status register. */ #define VFP_STATE_SIZE ((32 * 8) + 4) #endif struct task_struct; extern void fpsimd_save_state(struct fpsimd_state *state); extern void fpsimd_load_state(struct fpsimd_state *state); extern void fpsimd_thread_switch(struct task_struct *next); extern void fpsimd_flush_thread(void); extern void fpsimd_signal_preserve_current_state(void); extern void fpsimd_preserve_current_state(void); extern void fpsimd_restore_current_state(void); extern void fpsimd_update_current_state(struct fpsimd_state *state); extern void fpsimd_flush_task_state(struct task_struct *target); extern void sve_flush_cpu_state(void); /* Maximum VL that SVE VL-agnostic software can transparently support */ #define SVE_VL_ARCH_MAX 0x100 extern void sve_save_state(void *state, u32 *pfpsr); extern void sve_load_state(void const *state, u32 const *pfpsr, unsigned long vq_minus_1); extern unsigned int sve_get_vl(void); struct arm64_cpu_capabilities; extern void sve_kernel_enable(const struct arm64_cpu_capabilities *__unused); extern int __ro_after_init sve_max_vl; #ifdef CONFIG_ARM64_SVE extern size_t sve_state_size(struct task_struct const *task); extern void sve_alloc(struct task_struct *task); extern void fpsimd_release_task(struct task_struct *task); extern void fpsimd_sync_to_sve(struct task_struct *task); extern void sve_sync_to_fpsimd(struct task_struct *task); extern void sve_sync_from_fpsimd_zeropad(struct task_struct *task); extern int sve_set_vector_length(struct task_struct *task, unsigned long vl, unsigned long flags); extern int sve_set_current_vl(unsigned long arg); extern int sve_get_current_vl(void); /* * Probing and setup functions. * Calls to these functions must be serialised with one another. */ extern void __init sve_init_vq_map(void); extern void sve_update_vq_map(void); extern int sve_verify_vq_map(void); extern void __init sve_setup(void); #else /* ! CONFIG_ARM64_SVE */ static inline void sve_alloc(struct task_struct *task) { } static inline void fpsimd_release_task(struct task_struct *task) { } static inline void sve_sync_to_fpsimd(struct task_struct *task) { } static inline void sve_sync_from_fpsimd_zeropad(struct task_struct *task) { } static inline int sve_set_current_vl(unsigned long arg) { return -EINVAL; } static inline int sve_get_current_vl(void) { return -EINVAL; } static inline void sve_init_vq_map(void) { } static inline void sve_update_vq_map(void) { } static inline int sve_verify_vq_map(void) { return 0; } static inline void sve_setup(void) { } #endif /* ! CONFIG_ARM64_SVE */ /* For use by EFI runtime services calls only */ extern void __efi_fpsimd_begin(void); extern void __efi_fpsimd_end(void); #endif #endif
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xen | Folder | 0755 |
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Kbuild | File | 703 B | 0644 |
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acenv.h | File | 541 B | 0644 |
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acpi.h | File | 4.34 KB | 0644 |
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alternative.h | File | 7.63 KB | 0644 |
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arch_gicv3.h | File | 3.44 KB | 0644 |
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arch_timer.h | File | 4.87 KB | 0644 |
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arm-cci.h | File | 794 B | 0644 |
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asm-bug.h | File | 1.45 KB | 0644 |
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asm-offsets.h | File | 35 B | 0644 |
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asm-uaccess.h | File | 2.09 KB | 0644 |
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assembler.h | File | 13.51 KB | 0644 |
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atomic.h | File | 8.35 KB | 0644 |
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atomic_ll_sc.h | File | 10.62 KB | 0644 |
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atomic_lse.h | File | 14.82 KB | 0644 |
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barrier.h | File | 3.78 KB | 0644 |
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bitops.h | File | 1.9 KB | 0644 |
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bitrev.h | File | 452 B | 0644 |
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boot.h | File | 384 B | 0644 |
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brk-imm.h | File | 706 B | 0644 |
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bug.h | File | 1.09 KB | 0644 |
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cache.h | File | 2.23 KB | 0644 |
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cacheflush.h | File | 4.87 KB | 0644 |
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checksum.h | File | 1.35 KB | 0644 |
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clocksource.h | File | 192 B | 0644 |
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cmpxchg.h | File | 7.98 KB | 0644 |
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compat.h | File | 7.15 KB | 0644 |
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compiler.h | File | 1.18 KB | 0644 |
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cpu.h | File | 1.84 KB | 0644 |
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cpu_ops.h | File | 2.73 KB | 0644 |
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cpucaps.h | File | 1.83 KB | 0644 |
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cpufeature.h | File | 19.14 KB | 0644 |
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cpuidle.h | File | 401 B | 0644 |
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cputype.h | File | 8.1 KB | 0644 |
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current.h | File | 517 B | 0644 |
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daifflags.h | File | 1.59 KB | 0644 |
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dcc.h | File | 1.36 KB | 0644 |
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debug-monitors.h | File | 3.76 KB | 0644 |
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device.h | File | 886 B | 0644 |
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dma-mapping.h | File | 2.42 KB | 0644 |
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dmi.h | File | 850 B | 0644 |
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efi.h | File | 4.57 KB | 0644 |
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elf.h | File | 5.7 KB | 0644 |
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esr.h | File | 9.02 KB | 0644 |
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exception.h | File | 1.21 KB | 0644 |
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exec.h | File | 868 B | 0644 |
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extable.h | File | 815 B | 0644 |
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fb.h | File | 1000 B | 0644 |
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fixmap.h | File | 2.91 KB | 0644 |
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fpsimd.h | File | 4.21 KB | 0644 |
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fpsimdmacros.h | File | 5.62 KB | 0644 |
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ftrace.h | File | 1.92 KB | 0644 |
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futex.h | File | 3.41 KB | 0644 |
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hardirq.h | File | 2.08 KB | 0644 |
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hugetlb.h | File | 2.71 KB | 0644 |
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hw_breakpoint.h | File | 4.46 KB | 0644 |
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hwcap.h | File | 1.86 KB | 0644 |
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hypervisor.h | File | 144 B | 0644 |
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insn.h | File | 16.03 KB | 0644 |
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io.h | File | 7.72 KB | 0644 |
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irq.h | File | 307 B | 0644 |
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irq_work.h | File | 228 B | 0644 |
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irqflags.h | File | 2.3 KB | 0644 |
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jump_label.h | File | 1.68 KB | 0644 |
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kasan.h | File | 1.16 KB | 0644 |
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kernel-pgtable.h | File | 4.03 KB | 0644 |
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kexec.h | File | 2.42 KB | 0644 |
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kgdb.h | File | 3.79 KB | 0644 |
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kprobes.h | File | 1.74 KB | 0644 |
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kvm_arm.h | File | 8.38 KB | 0644 |
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kvm_asm.h | File | 4.26 KB | 0644 |
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kvm_coproc.h | File | 2.04 KB | 0644 |
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kvm_emulate.h | File | 10.38 KB | 0644 |
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kvm_host.h | File | 15.73 KB | 0644 |
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kvm_hyp.h | File | 5.79 KB | 0644 |
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kvm_mmio.h | File | 1.3 KB | 0644 |
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kvm_mmu.h | File | 11.72 KB | 0644 |
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linkage.h | File | 114 B | 0644 |
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lse.h | File | 1.26 KB | 0644 |
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memblock.h | File | 720 B | 0644 |
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memory.h | File | 9.32 KB | 0644 |
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mmu.h | File | 2.74 KB | 0644 |
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mmu_context.h | File | 6.35 KB | 0644 |
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mmzone.h | File | 266 B | 0644 |
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module.h | File | 2.8 KB | 0644 |
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neon.h | File | 815 B | 0644 |
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numa.h | File | 1.33 KB | 0644 |
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page-def.h | File | 1.17 KB | 0644 |
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page.h | File | 1.61 KB | 0644 |
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paravirt.h | File | 458 B | 0644 |
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pci.h | File | 878 B | 0644 |
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percpu.h | File | 7.48 KB | 0644 |
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perf_event.h | File | 3.17 KB | 0644 |
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pgalloc.h | File | 3.71 KB | 0644 |
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pgtable-hwdef.h | File | 9.4 KB | 0644 |
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pgtable-prot.h | File | 4.38 KB | 0644 |
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pgtable-types.h | File | 1.84 KB | 0644 |
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pgtable.h | File | 21.55 KB | 0644 |
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probes.h | File | 1022 B | 0644 |
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proc-fns.h | File | 1.21 KB | 0644 |
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processor.h | File | 6.52 KB | 0644 |
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ptdump.h | File | 1.42 KB | 0644 |
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ptrace.h | File | 9 KB | 0644 |
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sdei.h | File | 1.46 KB | 0644 |
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seccomp.h | File | 714 B | 0644 |
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sections.h | File | 1.46 KB | 0644 |
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shmparam.h | File | 965 B | 0644 |
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signal32.h | File | 1.45 KB | 0644 |
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simd.h | File | 1.39 KB | 0644 |
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smp.h | File | 4.23 KB | 0644 |
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smp_plat.h | File | 1.43 KB | 0644 |
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sparsemem.h | File | 771 B | 0644 |
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spinlock.h | File | 3.33 KB | 0644 |
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spinlock_types.h | File | 1.06 KB | 0644 |
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stack_pointer.h | File | 247 B | 0644 |
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stackprotector.h | File | 1.11 KB | 0644 |
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stacktrace.h | File | 2.53 KB | 0644 |
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stage2_pgtable-nopmd.h | File | 1.3 KB | 0644 |
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stage2_pgtable-nopud.h | File | 1.24 KB | 0644 |
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stage2_pgtable.h | File | 4.89 KB | 0644 |
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stat.h | File | 1.43 KB | 0644 |
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string.h | File | 2.33 KB | 0644 |
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suspend.h | File | 1.65 KB | 0644 |
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sync_bitops.h | File | 1.11 KB | 0644 |
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syscall.h | File | 2.87 KB | 0644 |
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sysreg.h | File | 25.1 KB | 0644 |
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system_misc.h | File | 1.86 KB | 0644 |
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thread_info.h | File | 3.93 KB | 0644 |
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timex.h | File | 883 B | 0644 |
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tlb.h | File | 2.22 KB | 0644 |
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tlbflush.h | File | 5.38 KB | 0644 |
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topology.h | File | 1.29 KB | 0644 |
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traps.h | File | 3.33 KB | 0644 |
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uaccess.h | File | 12.01 KB | 0644 |
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unistd.h | File | 1.6 KB | 0644 |
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unistd32.h | File | 27.53 KB | 0644 |
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uprobes.h | File | 777 B | 0644 |
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vdso.h | File | 1.09 KB | 0644 |
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vdso_datapage.h | File | 1.53 KB | 0644 |
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vectors.h | File | 1.75 KB | 0644 |
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virt.h | File | 3 KB | 0644 |
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vmap_stack.h | File | 769 B | 0644 |
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word-at-a-time.h | File | 2.22 KB | 0644 |
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