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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2024 Rivos, Inc
*/
#include <asm/vendorid_list.h>
#include <asm/vendor_extensions.h>
#include <asm/vendor_extensions/andes.h>
#include <linux/array_size.h>
#include <linux/types.h>
struct riscv_isa_vendor_ext_data_list *riscv_isa_vendor_ext_list[] = {
#ifdef CONFIG_RISCV_ISA_VENDOR_EXT_ANDES
&riscv_isa_vendor_ext_list_andes,
#endif
};
const size_t riscv_isa_vendor_ext_list_size = ARRAY_SIZE(riscv_isa_vendor_ext_list);
/**
* __riscv_isa_vendor_extension_available() - Check whether given vendor
* extension is available or not.
*
* @cpu: check if extension is available on this cpu
* @vendor: vendor that the extension is a member of
* @bit: bit position of the desired extension
* Return: true or false
*
* NOTE: When cpu is -1, will check if extension is available on all cpus
*/
bool __riscv_isa_vendor_extension_available(int cpu, unsigned long vendor, unsigned int bit)
{
struct riscv_isavendorinfo *bmap;
struct riscv_isavendorinfo *cpu_bmap;
switch (vendor) {
#ifdef CONFIG_RISCV_ISA_VENDOR_EXT_ANDES
case ANDES_VENDOR_ID:
bmap = &riscv_isa_vendor_ext_list_andes.all_harts_isa_bitmap;
cpu_bmap = riscv_isa_vendor_ext_list_andes.per_hart_isa_bitmap;
break;
#endif
default:
return false;
}
if (cpu != -1)
bmap = &cpu_bmap[cpu];
if (bit >= RISCV_ISA_VENDOR_EXT_MAX)
return false;
return test_bit(bit, bmap->isa) ? true : false;
}
EXPORT_SYMBOL_GPL(__riscv_isa_vendor_extension_available);
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