1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * apb_timer.h: Driver for Langwell APB timer based on Synopsis DesignWare
4  *
5  * (C) Copyright 2009 Intel Corporation
6  * Author: Jacob Pan (jacob.jun.pan@intel.com)
7  *
8  * Note:
9  */
10 
11 #ifndef ASM_X86_APBT_H
12 #define ASM_X86_APBT_H
13 #include <linux/sfi.h>
14 
15 #ifdef CONFIG_APB_TIMER
16 
17 /* default memory mapped register base */
18 #define LNW_SCU_ADDR           0xFF100000
19 #define LNW_EXT_TIMER_OFFSET   0x1B800
20 #define APBT_DEFAULT_BASE      (LNW_SCU_ADDR+LNW_EXT_TIMER_OFFSET)
21 #define LNW_EXT_TIMER_PGOFFSET         0x800
22 
23 /* APBT clock speed range from PCLK to fabric base, 25-100MHz */
24 #define APBT_MAX_FREQ          50000000
25 #define APBT_MIN_FREQ          1000000
26 #define APBT_MMAP_SIZE         1024
27 
28 extern void apbt_time_init(void);
29 extern void apbt_setup_secondary_clock(void);
30 
31 extern struct sfi_timer_table_entry *sfi_get_mtmr(int hint);
32 extern void sfi_free_mtmr(struct sfi_timer_table_entry *mtmr);
33 extern int sfi_mtimer_num;
34 
35 #else /* CONFIG_APB_TIMER */
36 
apbt_time_init(void)37 static inline void apbt_time_init(void) { }
38 
39 #endif
40 #endif /* ASM_X86_APBT_H */
41