diff options
Diffstat (limited to 'arch/powerpc/include/asm/hw_breakpoint.h')
| -rw-r--r-- | arch/powerpc/include/asm/hw_breakpoint.h | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index ece4dc89c90b..27ac6f5d2891 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -1,23 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * PowerPC BookIII S hardware breakpoint definitions * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * * Copyright 2010, IBM Corporation. * Author: K.Prasad <prasad@linux.vnet.ibm.com> - * */ #ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H @@ -28,6 +14,7 @@ struct arch_hw_breakpoint { unsigned long address; u16 type; u16 len; /* length of the target data symbol */ + u16 hw_len; /* length programmed in hw */ }; /* Note: Don't change the the first 6 bits below as they are in the same order @@ -47,6 +34,11 @@ struct arch_hw_breakpoint { #define HW_BRK_TYPE_PRIV_ALL (HW_BRK_TYPE_USER | HW_BRK_TYPE_KERNEL | \ HW_BRK_TYPE_HYP) +#define HW_BREAKPOINT_ALIGN 0x7 + +#define DABR_MAX_LEN 8 +#define DAWR_MAX_LEN 512 + #ifdef CONFIG_HAVE_HW_BREAKPOINT #include <linux/kdebug.h> #include <asm/reg.h> @@ -58,8 +50,6 @@ struct pmu; struct perf_sample_data; struct task_struct; -#define HW_BREAKPOINT_ALIGN 0x7 - extern int hw_breakpoint_slots(int type); extern int arch_bp_generic_fields(int type, int *gen_bp_type); extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw); @@ -84,6 +74,7 @@ static inline void hw_breakpoint_disable(void) brk.address = 0; brk.type = 0; brk.len = 0; + brk.hw_len = 0; if (ppc_breakpoint_available()) __set_breakpoint(&brk); } @@ -94,6 +85,21 @@ int hw_breakpoint_handler(struct die_args *args); static inline void hw_breakpoint_disable(void) { } static inline void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs) { } + #endif /* CONFIG_HAVE_HW_BREAKPOINT */ + + +#ifdef CONFIG_PPC_DAWR +extern bool dawr_force_enable; +static inline bool dawr_enabled(void) +{ + return dawr_force_enable; +} +int set_dawr(struct arch_hw_breakpoint *brk); +#else +static inline bool dawr_enabled(void) { return false; } +static inline int set_dawr(struct arch_hw_breakpoint *brk) { return -1; } +#endif + #endif /* __KERNEL__ */ #endif /* _PPC_BOOK3S_64_HW_BREAKPOINT_H */ |
