Contributors: 15
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Clément Leger |
103 |
20.77% |
5 |
13.51% |
| Evan Green |
83 |
16.73% |
5 |
13.51% |
| Charlie Jenkins |
61 |
12.30% |
5 |
13.51% |
| Andrew Jones |
59 |
11.90% |
1 |
2.70% |
| Conor Dooley |
46 |
9.27% |
5 |
13.51% |
| Anup Patel |
44 |
8.87% |
2 |
5.41% |
| JiSheng Zhang |
33 |
6.65% |
3 |
8.11% |
| Jesse Taube |
30 |
6.05% |
2 |
5.41% |
| Atish Patra |
12 |
2.42% |
3 |
8.11% |
| Xiao Wang |
8 |
1.61% |
1 |
2.70% |
| Palmer Dabbelt |
5 |
1.01% |
1 |
2.70% |
| Alexandre Ghiti |
4 |
0.81% |
1 |
2.70% |
| Greentime Hu |
4 |
0.81% |
1 |
2.70% |
| Andy Chiu |
3 |
0.60% |
1 |
2.70% |
| Samuel Holland |
1 |
0.20% |
1 |
2.70% |
| Total |
496 |
|
37 |
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright 2022-2024 Rivos, Inc
*/
#ifndef _ASM_CPUFEATURE_H
#define _ASM_CPUFEATURE_H
#include <linux/bitmap.h>
#include <linux/jump_label.h>
#include <linux/workqueue.h>
#include <linux/kconfig.h>
#include <linux/percpu-defs.h>
#include <linux/threads.h>
#include <asm/hwcap.h>
#include <asm/cpufeature-macros.h>
/*
* These are probed via a device_initcall(), via either the SBI or directly
* from the corresponding CSRs.
*/
struct riscv_cpuinfo {
unsigned long mvendorid;
unsigned long marchid;
unsigned long mimpid;
};
struct riscv_isainfo {
DECLARE_BITMAP(isa, RISCV_ISA_EXT_MAX);
};
DECLARE_PER_CPU(struct riscv_cpuinfo, riscv_cpuinfo);
/* Per-cpu ISA extensions. */
extern struct riscv_isainfo hart_isa[NR_CPUS];
void __init riscv_user_isa_enable(void);
#define _RISCV_ISA_EXT_DATA(_name, _id, _subset_exts, _subset_exts_size, _validate) { \
.name = #_name, \
.property = #_name, \
.id = _id, \
.subset_ext_ids = _subset_exts, \
.subset_ext_size = _subset_exts_size, \
.validate = _validate \
}
#define __RISCV_ISA_EXT_DATA(_name, _id) _RISCV_ISA_EXT_DATA(_name, _id, NULL, 0, NULL)
#define __RISCV_ISA_EXT_DATA_VALIDATE(_name, _id, _validate) \
_RISCV_ISA_EXT_DATA(_name, _id, NULL, 0, _validate)
/* Used to declare pure "lasso" extension (Zk for instance) */
#define __RISCV_ISA_EXT_BUNDLE(_name, _bundled_exts) \
_RISCV_ISA_EXT_DATA(_name, RISCV_ISA_EXT_INVALID, _bundled_exts, \
ARRAY_SIZE(_bundled_exts), NULL)
/* Used to declare extensions that are a superset of other extensions (Zvbb for instance) */
#define __RISCV_ISA_EXT_SUPERSET(_name, _id, _sub_exts) \
_RISCV_ISA_EXT_DATA(_name, _id, _sub_exts, ARRAY_SIZE(_sub_exts), NULL)
#define __RISCV_ISA_EXT_SUPERSET_VALIDATE(_name, _id, _sub_exts, _validate) \
_RISCV_ISA_EXT_DATA(_name, _id, _sub_exts, ARRAY_SIZE(_sub_exts), _validate)
bool check_unaligned_access_emulated_all_cpus(void);
#if defined(CONFIG_RISCV_SCALAR_MISALIGNED)
void check_unaligned_access_emulated(struct work_struct *work __always_unused);
void unaligned_emulation_finish(void);
bool unaligned_ctl_available(void);
DECLARE_PER_CPU(long, misaligned_access_speed);
#else
static inline bool unaligned_ctl_available(void)
{
return false;
}
#endif
bool check_vector_unaligned_access_emulated_all_cpus(void);
#if defined(CONFIG_RISCV_VECTOR_MISALIGNED)
void check_vector_unaligned_access_emulated(struct work_struct *work __always_unused);
DECLARE_PER_CPU(long, vector_misaligned_access);
#endif
#if defined(CONFIG_RISCV_PROBE_UNALIGNED_ACCESS)
DECLARE_STATIC_KEY_FALSE(fast_unaligned_access_speed_key);
static __always_inline bool has_fast_unaligned_accesses(void)
{
return static_branch_likely(&fast_unaligned_access_speed_key);
}
#else
static __always_inline bool has_fast_unaligned_accesses(void)
{
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS))
return true;
else
return false;
}
#endif
unsigned long riscv_get_elf_hwcap(void);
struct riscv_isa_ext_data {
const unsigned int id;
const char *name;
const char *property;
const unsigned int *subset_ext_ids;
const unsigned int subset_ext_size;
int (*validate)(const struct riscv_isa_ext_data *data, const unsigned long *isa_bitmap);
};
extern const struct riscv_isa_ext_data riscv_isa_ext[];
extern const size_t riscv_isa_ext_count;
extern bool riscv_isa_fallback;
unsigned long riscv_isa_extension_base(const unsigned long *isa_bitmap);
static __always_inline bool riscv_cpu_has_extension_likely(int cpu, const unsigned long ext)
{
compiletime_assert(ext < RISCV_ISA_EXT_MAX, "ext must be < RISCV_ISA_EXT_MAX");
if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE) &&
__riscv_has_extension_likely(STANDARD_EXT, ext))
return true;
return __riscv_isa_extension_available(hart_isa[cpu].isa, ext);
}
static __always_inline bool riscv_cpu_has_extension_unlikely(int cpu, const unsigned long ext)
{
compiletime_assert(ext < RISCV_ISA_EXT_MAX, "ext must be < RISCV_ISA_EXT_MAX");
if (IS_ENABLED(CONFIG_RISCV_ALTERNATIVE) &&
__riscv_has_extension_unlikely(STANDARD_EXT, ext))
return true;
return __riscv_isa_extension_available(hart_isa[cpu].isa, ext);
}
#endif