1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <asm/cpufeature.h> 4 #include <asm/vendor_extensions.h> 5 #include <asm/vendor_extensions/thead.h> 6 7 #include <linux/array_size.h> 8 #include <linux/cpumask.h> 9 #include <linux/types.h> 10 11 /* All T-Head vendor extensions supported in Linux */ 12 static const struct riscv_isa_ext_data riscv_isa_vendor_ext_thead[] = { 13 __RISCV_ISA_EXT_DATA(xtheadvector, RISCV_ISA_VENDOR_EXT_XTHEADVECTOR), 14 }; 15 16 struct riscv_isa_vendor_ext_data_list riscv_isa_vendor_ext_list_thead = { 17 .ext_data_count = ARRAY_SIZE(riscv_isa_vendor_ext_thead), 18 .ext_data = riscv_isa_vendor_ext_thead, 19 }; 20 21 void disable_xtheadvector(void) 22 { 23 int cpu; 24 25 for_each_possible_cpu(cpu) 26 clear_bit(RISCV_ISA_VENDOR_EXT_XTHEADVECTOR, riscv_isa_vendor_ext_list_thead.per_hart_isa_bitmap[cpu].isa); 27 28 clear_bit(RISCV_ISA_VENDOR_EXT_XTHEADVECTOR, riscv_isa_vendor_ext_list_thead.all_harts_isa_bitmap.isa); 29 } 30