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71 lines
2.0 KiB
71 lines
2.0 KiB
/* |
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* Copyright (C) 2012 ARM Ltd. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#ifndef __CLKSOURCE_ARM_ARCH_TIMER_H |
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#define __CLKSOURCE_ARM_ARCH_TIMER_H |
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#include <linux/timecounter.h> |
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#include <linux/types.h> |
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#define ARCH_TIMER_CTRL_ENABLE (1 << 0) |
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#define ARCH_TIMER_CTRL_IT_MASK (1 << 1) |
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#define ARCH_TIMER_CTRL_IT_STAT (1 << 2) |
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enum arch_timer_reg { |
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ARCH_TIMER_REG_CTRL, |
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ARCH_TIMER_REG_TVAL, |
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}; |
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#define ARCH_TIMER_PHYS_ACCESS 0 |
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#define ARCH_TIMER_VIRT_ACCESS 1 |
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#define ARCH_TIMER_MEM_PHYS_ACCESS 2 |
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#define ARCH_TIMER_MEM_VIRT_ACCESS 3 |
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#define ARCH_TIMER_USR_PCT_ACCESS_EN (1 << 0) /* physical counter */ |
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#define ARCH_TIMER_USR_VCT_ACCESS_EN (1 << 1) /* virtual counter */ |
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#define ARCH_TIMER_VIRT_EVT_EN (1 << 2) |
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#define ARCH_TIMER_EVT_TRIGGER_SHIFT (4) |
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#define ARCH_TIMER_EVT_TRIGGER_MASK (0xF << ARCH_TIMER_EVT_TRIGGER_SHIFT) |
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#define ARCH_TIMER_USR_VT_ACCESS_EN (1 << 8) /* virtual timer registers */ |
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#define ARCH_TIMER_USR_PT_ACCESS_EN (1 << 9) /* physical timer registers */ |
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#define ARCH_TIMER_EVT_STREAM_FREQ 10000 /* 100us */ |
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#ifdef CONFIG_ARM_ARCH_TIMER |
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extern u32 arch_timer_get_rate(void); |
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extern u64 (*arch_timer_read_counter)(void); |
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extern struct timecounter *arch_timer_get_timecounter(void); |
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#else |
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static inline u32 arch_timer_get_rate(void) |
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{ |
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return 0; |
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} |
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static inline u64 arch_timer_read_counter(void) |
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{ |
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return 0; |
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} |
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static inline struct timecounter *arch_timer_get_timecounter(void) |
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{ |
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return NULL; |
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} |
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#endif |
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#endif
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