drivers/macintosh/therm_pm72.h

   1 #ifndef __THERM_PMAC_7_2_H__
   2 #define __THERM_PMAC_7_2_H__
   3
   4 typedef unsigned short fu16;
   5 typedef int fs32;
   6 typedef short fs16;
   7
   8 struct mpu_data
   9 {
  10         u8      signature;              /* 0x00 - EEPROM sig. */
  11         u8      bytes_used;             /* 0x01 - Bytes used in eeprom (160 ?) */
  12         u8      size;                   /* 0x02 - EEPROM size (256 ?) */
  13         u8      version;                /* 0x03 - EEPROM version */
  14         u32     data_revision;          /* 0x04 - Dataset revision */
  15         u8      processor_bin_code[3];  /* 0x08 - Processor BIN code */
  16         u8      bin_code_expansion;     /* 0x0b - ??? (padding ?) */
  17         u8      processor_num;          /* 0x0c - Number of CPUs on this MPU */
  18         u8      input_mul_bus_div;      /* 0x0d - Clock input multiplier/bus divider */
  19         u8      reserved1[2];           /* 0x0e - */
  20         u32     input_clk_freq_high;    /* 0x10 - Input clock frequency high */
  21         u8      cpu_nb_target_cycles;   /* 0x14 - ??? */
  22         u8      cpu_statlat;            /* 0x15 - ??? */
  23         u8      cpu_snooplat;           /* 0x16 - ??? */
  24         u8      cpu_snoopacc;           /* 0x17 - ??? */
  25         u8      nb_paamwin;             /* 0x18 - ??? */
  26         u8      nb_statlat;             /* 0x19 - ??? */
  27         u8      nb_snooplat;            /* 0x1a - ??? */
  28         u8      nb_snoopwin;            /* 0x1b - ??? */
  29         u8      api_bus_mode;           /* 0x1c - ??? */
  30         u8      reserved2[3];           /* 0x1d - */
  31         u32     input_clk_freq_low;     /* 0x20 - Input clock frequency low */
  32         u8      processor_card_slot;    /* 0x24 - Processor card slot number */
  33         u8      reserved3[2];           /* 0x25 - */
  34         u8      padjmax;                /* 0x27 - Max power adjustment (Not in OF!) */
  35         u8      ttarget;                /* 0x28 - Target temperature */
  36         u8      tmax;                   /* 0x29 - Max temperature */
  37         u8      pmaxh;                  /* 0x2a - Max power */
  38         u8      tguardband;             /* 0x2b - Guardband temp ??? Hist. len in OSX */
  39         fs32    pid_gp;                 /* 0x2c - PID proportional gain */
  40         fs32    pid_gr;                 /* 0x30 - PID reset gain */
  41         fs32    pid_gd;                 /* 0x34 - PID derivative gain */
  42         fu16    voph;                   /* 0x38 - Vop High */
  43         fu16    vopl;                   /* 0x3a - Vop Low */
  44         fs16    nactual_die;            /* 0x3c - nActual Die */
  45         fs16    nactual_heatsink;       /* 0x3e - nActual Heatsink */
  46         fs16    nactual_system;         /* 0x40 - nActual System */
  47         u16     calibration_flags;      /* 0x42 - Calibration flags */
  48         fu16    mdiode;                 /* 0x44 - Diode M value (scaling factor) */
  49         fs16    bdiode;                 /* 0x46 - Diode B value (offset) */
  50         fs32    theta_heat_sink;        /* 0x48 - Theta heat sink */
  51         u16     rminn_intake_fan;       /* 0x4c - Intake fan min RPM */
  52         u16     rmaxn_intake_fan;       /* 0x4e - Intake fan max RPM */
  53         u16     rminn_exhaust_fan;      /* 0x50 - Exhaust fan min RPM */
  54         u16     rmaxn_exhaust_fan;      /* 0x52 - Exhaust fan max RPM */
  55         u8      processor_part_num[8];  /* 0x54 - Processor part number */
  56         u32     processor_lot_num;      /* 0x5c - Processor lot number */
  57         u8      orig_card_sernum[0x10]; /* 0x60 - Card original serial number */
  58         u8      curr_card_sernum[0x10]; /* 0x70 - Card current serial number */
  59         u8      mlb_sernum[0x18];       /* 0x80 - MLB serial number */
  60         u32     checksum1;              /* 0x98 - */
  61         u32     checksum2;              /* 0x9c - */
  62 }; /* Total size = 0xa0 */
  63
  64 /* Display a 16.16 fixed point value */
  65 #define FIX32TOPRINT(f) ((f) >> 16),((((f) & 0xffff) * 1000) >> 16)
  66
  67 /*
  68  * Maximum number of seconds to be in critical state (after a
  69  * normal shutdown attempt). If the machine isn't down after
  70  * this counter elapses, we force an immediate machine power
  71  * off.
  72  */
  73 #define MAX_CRITICAL_STATE                      30
  74 static char * critical_overtemp_path = "/sbin/critical_overtemp";
  75
  76 /*
  77  * This option is "weird" :) Basically, if you define this to 1
  78  * the control loop for the RPMs fans (not PWMs) will apply the
  79  * correction factor obtained from the PID to the _actual_ RPM
  80  * speed read from the FCU.
  81  * If you define the below constant to 0, then it will be
  82  * applied to the setpoint RPM speed, that is basically the
  83  * speed we proviously "asked" for.
  84  *
  85  * I'm not sure which of these Apple's algorithm is supposed
  86  * to use
  87  */
  88 #define RPM_PID_USE_ACTUAL_SPEED                0
  89
  90 /*
  91  * i2c IDs. Currently, we hard code those and assume that
  92  * the FCU is on U3 bus 1 while all sensors are on U3 bus
  93  * 0. This appear to be safe enough for this first version
  94  * of the driver, though I would accept any clean patch
  95  * doing a better use of the device-tree without turning the
  96  * while i2c registration mecanism into a racy mess
  97  */
  98 #define FAN_CTRLER_ID           0x15e
  99 #define SUPPLY_MONITOR_ID       0x58
 100 #define SUPPLY_MONITORB_ID      0x5a
 101 #define DRIVES_DALLAS_ID        0x94
 102 #define BACKSIDE_MAX_ID         0x98
 103
 104 /*
 105  * Some MAX6690 & DS1775 register definitions
 106  */
 107 #define MAX6690_INT_TEMP        0
 108 #define MAX6690_EXT_TEMP        1
 109 #define DS1775_TEMP             0
 110
 111 /*
 112  * Scaling factors for the AD7417 ADC converters (except
 113  * for the CPU diode which is obtained from the EEPROM).
 114  * Those values are obtained from the property list of
 115  * the darwin driver
 116  */
 117 #define ADC_12V_CURRENT_SCALE   0x0320  /* _AD2 */
 118 #define ADC_CPU_VOLTAGE_SCALE   0x00a0  /* _AD3 */
 119 #define ADC_CPU_CURRENT_SCALE   0x1f40  /* _AD4 */
 120
 121 /*
 122  * PID factors for the U3/Backside fan control loop
 123  */
 124 #define BACKSIDE_FAN_PWM_ID             1
 125 #define BACKSIDE_PID_G_d                0x02800000
 126 #define BACKSIDE_PID_G_p                0x00500000
 127 #define BACKSIDE_PID_G_r                0x00000000
 128 #define BACKSIDE_PID_INPUT_TARGET       0x00410000
 129 #define BACKSIDE_PID_INTERVAL           5
 130 #define BACKSIDE_PID_OUTPUT_MAX         100
 131 #define BACKSIDE_PID_OUTPUT_MIN         20
 132 #define BACKSIDE_PID_HISTORY_SIZE       2
 133
 134 struct backside_pid_state
 135 {
 136         int                     ticks;
 137         struct i2c_client *     monitor;
 138         s32                     sample_history[BACKSIDE_PID_HISTORY_SIZE];
 139         s32                     error_history[BACKSIDE_PID_HISTORY_SIZE];
 140         int                     cur_sample;
 141         s32                     last_temp;
 142         int                     pwm;
 143         int                     first;
 144 };
 145
 146 /*
 147  * PID factors for the Drive Bay fan control loop
 148  */
 149 #define DRIVES_FAN_RPM_ID               2
 150 #define DRIVES_PID_G_d                  0x01e00000
 151 #define DRIVES_PID_G_p                  0x00500000
 152 #define DRIVES_PID_G_r                  0x00000000
 153 #define DRIVES_PID_INPUT_TARGET         0x00280000
 154 #define DRIVES_PID_INTERVAL             5
 155 #define DRIVES_PID_OUTPUT_MAX           4000
 156 #define DRIVES_PID_OUTPUT_MIN           300
 157 #define DRIVES_PID_HISTORY_SIZE         2
 158
 159 struct drives_pid_state
 160 {
 161         int                     ticks;
 162         struct i2c_client *     monitor;
 163         s32                     sample_history[BACKSIDE_PID_HISTORY_SIZE];
 164         s32                     error_history[BACKSIDE_PID_HISTORY_SIZE];
 165         int                     cur_sample;
 166         s32                     last_temp;
 167         int                     rpm;
 168         int                     first;
 169 };
 170
 171 #define SLOTS_FAN_PWM_ID                2
 172 #define SLOTS_FAN_DEFAULT_PWM           50 /* Do better here ! */
 173
 174 /*
 175  * IDs in Darwin for the sensors & fans
 176  *
 177  * CPU A AD7417_TEMP    10      (CPU A ambient temperature)
 178  * CPU A AD7417_AD1     11      (CPU A diode temperature)
 179  * CPU A AD7417_AD2     12      (CPU A 12V current)
 180  * CPU A AD7417_AD3     13      (CPU A voltage)
 181  * CPU A AD7417_AD4     14      (CPU A current)
 182  *
 183  * CPU A FAKE POWER     48      (I_V_inputs: 13, 14)
 184  *
 185  * CPU B AD7417_TEMP    15      (CPU B ambient temperature)
 186  * CPU B AD7417_AD1     16      (CPU B diode temperature)
 187  * CPU B AD7417_AD2     17      (CPU B 12V current)
 188  * CPU B AD7417_AD3     18      (CPU B voltage)
 189  * CPU B AD7417_AD4     19      (CPU B current)
 190  *
 191  * CPU B FAKE POWER     49      (I_V_inputs: 18, 19)
 192  */
 193
 194 #define CPUA_INTAKE_FAN_RPM_ID          3
 195 #define CPUA_EXHAUST_FAN_RPM_ID         4
 196 #define CPUB_INTAKE_FAN_RPM_ID          5
 197 #define CPUB_EXHAUST_FAN_RPM_ID         6
 198
 199 #define CPU_INTAKE_SCALE                0x0000f852
 200 #define CPU_TEMP_HISTORY_SIZE           2
 201 #define CPU_POWER_HISTORY_SIZE          10
 202 #define CPU_PID_INTERVAL                1
 203 #define CPU_MAX_OVERTEMP                30
 204
 205 struct cpu_pid_state
 206 {
 207         int                     index;
 208         struct i2c_client *     monitor;
 209         struct mpu_data         mpu;
 210         int                     overtemp;
 211         s32                     temp_history[CPU_TEMP_HISTORY_SIZE];
 212         int                     cur_temp;
 213         s32                     power_history[CPU_POWER_HISTORY_SIZE];
 214         s32                     error_history[CPU_POWER_HISTORY_SIZE];
 215         int                     cur_power;
 216         int                     count_power;
 217         int                     rpm;
 218         int                     intake_rpm;
 219         s32                     voltage;
 220         s32                     current_a;
 221         s32                     last_temp;
 222         int                     first;
 223         u8                      adc_config;
 224 };
 225
 226 /*
 227  * Driver state
 228  */
 229 enum {
 230         state_detached,
 231         state_attaching,
 232         state_attached,
 233         state_detaching,
 234 };
 235
 236
 237 #endif /* __THERM_PMAC_7_2_H__ */