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1 /*
2  * tmon.h contains data structures and constants used by TMON
3  *
4  * Copyright (C) 2012 Intel Corporation. All rights reserved.
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License version
8  * 2 or later as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * Author Name Jacob Pan <jacob.jun.pan@linux.intel.com>
16  *
17  */
18 
19 #ifndef TMON_H
20 #define TMON_H
21 
22 #define MAX_DISP_TEMP 125
23 #define MAX_CTRL_TEMP 105
24 #define MIN_CTRL_TEMP 40
25 #define MAX_NR_TZONE 16
26 #define MAX_NR_CDEV 32
27 #define MAX_NR_TRIP 16
28 #define MAX_NR_CDEV_TRIP 12 /* number of cooling devices that can bind
29 			     * to a thermal zone trip.
30 			     */
31 #define MAX_TEMP_KC 140000
32 /* starting char position to draw sensor data, such as tz names
33  * trip point list, etc.
34  */
35 #define DATA_LEFT_ALIGN 10
36 #define NR_LINES_TZDATA 1
37 #define TMON_LOG_FILE "/var/tmp/tmon.log"
38 
39 extern unsigned long ticktime;
40 extern double time_elapsed;
41 extern unsigned long target_temp_user;
42 extern int dialogue_on;
43 extern char ctrl_cdev[];
44 extern pthread_mutex_t input_lock;
45 extern int tmon_exit;
46 extern int target_thermal_zone;
47 /* use fixed size record to simplify data processing and transfer
48  * TBD: more info to be added, e.g. programmable trip point data.
49 */
50 struct thermal_data_record {
51 	struct timeval tv;
52 	unsigned long temp[MAX_NR_TZONE];
53 	double pid_out_pct;
54 };
55 
56 struct cdev_info {
57 	char type[64];
58 	int instance;
59 	unsigned long max_state;
60 	unsigned long cur_state;
61 	unsigned long flag;
62 };
63 
64 enum trip_type {
65 	THERMAL_TRIP_CRITICAL,
66 	THERMAL_TRIP_HOT,
67 	THERMAL_TRIP_PASSIVE,
68 	THERMAL_TRIP_ACTIVE,
69 	NR_THERMAL_TRIP_TYPE,
70 };
71 
72 struct trip_point {
73 	enum trip_type type;
74 	unsigned long temp;
75 	unsigned long hysteresis;
76 	int attribute; /* programmability etc. */
77 };
78 
79 /* thermal zone configuration information, binding with cooling devices could
80  * change at runtime.
81  */
82 struct tz_info {
83 	char type[256]; /* e.g. acpitz */
84 	int instance;
85 	int passive; /* active zone has passive node to force passive mode */
86 	int nr_cdev; /* number of cooling device binded */
87 	int nr_trip_pts;
88 	struct trip_point tp[MAX_NR_TRIP];
89 	unsigned long cdev_binding; /* bitmap for attached cdevs */
90 	/* cdev bind trip points, allow one cdev bind to multiple trips */
91 	unsigned long trip_binding[MAX_NR_CDEV];
92 };
93 
94 struct tmon_platform_data {
95 	int nr_tz_sensor;
96 	int nr_cooling_dev;
97 	/* keep track of instance ids since there might be gaps */
98 	int max_tz_instance;
99 	int max_cdev_instance;
100 	struct tz_info *tzi;
101 	struct cdev_info *cdi;
102 };
103 
104 struct control_ops {
105 	void (*set_ratio)(unsigned long ratio);
106 	unsigned long (*get_ratio)(unsigned long ratio);
107 
108 };
109 
110 enum cdev_types {
111 	CDEV_TYPE_PROC,
112 	CDEV_TYPE_FAN,
113 	CDEV_TYPE_MEM,
114 	CDEV_TYPE_NR,
115 };
116 
117 /* REVISIT: the idea is to group sensors if possible, e.g. on intel mid
118  * we have "skin0", "skin1", "sys", "msicdie"
119  * on DPTF enabled systems, we might have PCH, TSKN, TAMB, etc.
120  */
121 enum tzone_types {
122 	TZONE_TYPE_ACPI,
123 	TZONE_TYPE_PCH,
124 	TZONE_TYPE_NR,
125 };
126 
127 /* limit the output of PID controller adjustment */
128 #define LIMIT_HIGH (95)
129 #define LIMIT_LOW  (2)
130 
131 struct pid_params {
132 	double kp;  /* Controller gain from Dialog Box */
133 	double ki;  /* Time-constant for I action from Dialog Box */
134 	double kd;  /* Time-constant for D action from Dialog Box */
135 	double ts;
136 	double k_lpf;
137 
138 	double t_target;
139 	double y_k;
140 };
141 
142 extern int init_thermal_controller(void);
143 extern void controller_handler(const double xk, double *yk);
144 
145 extern struct tmon_platform_data ptdata;
146 extern struct pid_params p_param;
147 
148 extern FILE *tmon_log;
149 extern int cur_thermal_record; /* index to the trec array */
150 extern struct thermal_data_record trec[];
151 extern const char *trip_type_name[];
152 extern unsigned long no_control;
153 
154 extern void initialize_curses(void);
155 extern void show_controller_stats(char *line);
156 extern void show_title_bar(void);
157 extern void setup_windows(void);
158 extern void disable_tui(void);
159 extern void show_sensors_w(void);
160 extern void show_data_w(void);
161 extern void write_status_bar(int x, char *line);
162 extern void show_control_w();
163 
164 extern void show_cooling_device(void);
165 extern void show_dialogue(void);
166 extern int update_thermal_data(void);
167 
168 extern int probe_thermal_sysfs(void);
169 extern void free_thermal_data(void);
170 extern	void resize_handler(int sig);
171 extern void set_ctrl_state(unsigned long state);
172 extern void get_ctrl_state(unsigned long *state);
173 extern void *handle_tui_events(void *arg);
174 extern int sysfs_set_ulong(char *path, char *filename, unsigned long val);
175 extern int zone_instance_to_index(int zone_inst);
176 extern void close_windows(void);
177 
178 #define PT_COLOR_DEFAULT    1
179 #define PT_COLOR_HEADER_BAR 2
180 #define PT_COLOR_ERROR      3
181 #define PT_COLOR_RED        4
182 #define PT_COLOR_YELLOW     5
183 #define PT_COLOR_GREEN      6
184 #define PT_COLOR_BRIGHT     7
185 #define PT_COLOR_BLUE	    8
186 
187 /* each thermal zone uses 12 chars, 8 for name, 2 for instance, 2 space
188  * also used to list trip points in forms of AAAC, which represents
189  * A: Active
190  * C: Critical
191  */
192 #define TZONE_RECORD_SIZE 12
193 #define TZ_LEFT_ALIGN 32
194 #define CDEV_NAME_SIZE 20
195 #define CDEV_FLAG_IN_CONTROL (1 << 0)
196 
197 /* dialogue box starts */
198 #define DIAG_X 48
199 #define DIAG_Y 8
200 #define THERMAL_SYSFS "/sys/class/thermal"
201 #define CDEV "cooling_device"
202 #define TZONE "thermal_zone"
203 #define TDATA_LEFT 16
204 #endif /* TMON_H */
205