Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2020 Synopsys, Inc. (www.synopsys.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef _ASM_ARC_FPU_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define _ASM_ARC_FPU_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifdef CONFIG_ARC_FPU_SAVE_RESTORE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifdef CONFIG_ISA_ARCOMPACT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /* These DPFP regs need to be saved/restored across ctx-sw */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct arc_fpu {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		unsigned int l, h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	} aux_dpfp[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define fpu_init_task(regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * ARCv2 FPU Control aux register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  *   - bits to enable Traps on Exceptions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  *   - Rounding mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  * ARCv2 FPU Status aux register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  *   - FPU exceptions flags (Inv, Div-by-Zero, overflow, underflow, inexact)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  *   - Flag Write Enable to clear flags explicitly (vs. by fpu instructions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  *     only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct arc_fpu {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	unsigned int ctrl, status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) extern void fpu_init_task(struct pt_regs *regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #endif	/* !CONFIG_ISA_ARCOMPACT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct task_struct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) extern void fpu_save_restore(struct task_struct *p, struct task_struct *n);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #else	/* !CONFIG_ARC_FPU_SAVE_RESTORE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define fpu_save_restore(p, n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define fpu_init_task(regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #endif	/* CONFIG_ARC_FPU_SAVE_RESTORE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #endif	/* _ASM_ARC_FPU_H */