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add arm64 support

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- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests
This commit is contained in:
Takayuki Okamoto
2017-09-05 15:06:27 +09:00
parent 704096b139
commit 9989f41fd3
192 changed files with 26941 additions and 34 deletions
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99
arch/arm64/kernel/include/fpsimd.h Normal file
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/* fpsimd.h COPYRIGHT FUJITSU LIMITED 2016-2017 */
#ifndef __HEADER_ARM64_COMMON_FPSIMD_H
#define __HEADER_ARM64_COMMON_FPSIMD_H
#include <ptrace.h>
#ifndef __ASSEMBLY__
/*
* 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.
*/
/* @ref.impl arch/arm64/include/asm/fpsimd.h::struct fpsimd_state */
struct fpsimd_state {
union {
struct user_fpsimd_state user_fpsimd;
struct {
__uint128_t vregs[32];
unsigned int fpsr;
unsigned int 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;
};
/* need for struct process */
typedef struct fpsimd_state fp_regs_struct;
extern void thread_fpsimd_to_sve(struct thread *thread, fp_regs_struct *fp_regs);
extern void thread_sve_to_fpsimd(struct thread *thread, fp_regs_struct *fp_regs);
#ifdef CONFIG_ARM64_SVE
extern size_t sve_state_size(struct thread const *thread);
extern void sve_free(struct thread *thread);
extern void sve_alloc(struct thread *thread);
extern void sve_save_state(void *state, unsigned int *pfpsr);
extern void sve_load_state(void const *state, unsigned int const *pfpsr, unsigned long vq_minus_1);
extern unsigned int sve_get_vl(void);
extern int sve_set_thread_vl(struct thread *thread, const unsigned long vector_length, const unsigned long flags);
extern int sve_get_thread_vl(const struct thread *thread);
extern int sve_set_vector_length(struct thread *thread, unsigned long vl, unsigned long flags);
#define SVE_SET_VL(thread, vector_length, flags) sve_set_thread_vl(thread, vector_length, flags)
#define SVE_GET_VL(thread) sve_get_thread_vl(thread)
#else /* CONFIG_ARM64_SVE */
#include <ihk/debug.h>
#include <errno.h>
static void sve_save_state(void *state, unsigned int *pfpsr)
{
panic("PANIC:sve_save_state() was called CONFIG_ARM64_SVE off.\n");
}
static void sve_load_state(void const *state, unsigned int const *pfpsr, unsigned long vq_minus_1)
{
panic("PANIC:sve_load_state() was called CONFIG_ARM64_SVE off.\n");
}
static unsigned int sve_get_vl(void)
{
panic("PANIC:sve_get_vl() was called CONFIG_ARM64_SVE off.\n");
return (unsigned int)-1;
}
static int sve_set_vector_length(struct thread *thread, unsigned long vl, unsigned long flags)
{
return -EINVAL;
}
/* for prctl syscall */
#define SVE_SET_VL(a,b,c) (-EINVAL)
#define SVE_GET_VL(a) (-EINVAL)
#endif /* CONFIG_ARM64_SVE */
extern void init_sve_vl(void);
extern void fpsimd_save_state(struct fpsimd_state *state);
extern void fpsimd_load_state(struct fpsimd_state *state);
extern void thread_fpsimd_save(struct thread *thread);
extern void thread_fpsimd_load(struct thread *thread);
extern int sve_max_vl;
extern int sve_default_vl;
#endif /* !__ASSEMBLY__ */
#endif /* !__HEADER_ARM64_COMMON_FPSIMD_H */