1 /* 2 * Definitions for talking to the PMU. The PMU is a microcontroller 3 * which controls battery charging and system power on PowerBook 3400 4 * and 2400 models as well as the RTC and various other things. 5 * 6 * Copyright (C) 1998 Paul Mackerras. 7 * Copyright (C) 2016 Ben Herrenschmidt 8 */ 9 10 #ifndef PMU_H 11 #define PMU_H 12 13 #include "hw/misc/mos6522.h" 14 #include "hw/misc/macio/gpio.h" 15 16 /* 17 * PMU commands 18 */ 19 20 #define PMU_POWER_CTRL0 0x10 /* control power of some devices */ 21 #define PMU_POWER_CTRL 0x11 /* control power of some devices */ 22 #define PMU_ADB_CMD 0x20 /* send ADB packet */ 23 #define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */ 24 #define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */ 25 #define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */ 26 #define PMU_SET_RTC 0x30 /* set real-time clock */ 27 #define PMU_READ_RTC 0x38 /* read real-time clock */ 28 #define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */ 29 #define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */ 30 #define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */ 31 #define PMU_PCEJECT 0x4c /* eject PC-card from slot */ 32 #define PMU_BATTERY_STATE 0x6b /* report battery state etc. */ 33 #define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */ 34 #define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */ 35 #define PMU_INT_ACK 0x78 /* read interrupt bits */ 36 #define PMU_SHUTDOWN 0x7e /* turn power off */ 37 #define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */ 38 #define PMU_SLEEP 0x7f /* put CPU to sleep */ 39 #define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */ 40 #define PMU_I2C_CMD 0x9a /* I2C operations */ 41 #define PMU_RESET 0xd0 /* reset CPU */ 42 #define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */ 43 #define PMU_GET_COVER 0xdc /* report cover open/closed */ 44 #define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */ 45 #define PMU_DOWNLOAD_STATUS 0xe2 /* Called by MacOS during boot... */ 46 #define PMU_READ_PMU_RAM 0xe8 /* read the PMU RAM... ??? */ 47 #define PMU_GET_VERSION 0xea /* read the PMU version */ 48 49 /* Bits to use with the PMU_POWER_CTRL0 command */ 50 #define PMU_POW0_ON 0x80 /* OR this to power ON the device */ 51 #define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */ 52 #define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power 53 * (on wallstreet/lombard ?) */ 54 55 /* Bits to use with the PMU_POWER_CTRL command */ 56 #define PMU_POW_ON 0x80 /* OR this to power ON the device */ 57 #define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */ 58 #define PMU_POW_BACKLIGHT 0x01 /* backlight power */ 59 #define PMU_POW_CHARGER 0x02 /* battery charger power */ 60 #define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */ 61 #define PMU_POW_MEDIABAY 0x08 /* media bay power 62 * (wallstreet/lombard ?) */ 63 64 /* Bits in PMU interrupt and interrupt mask bytes */ 65 #define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */ 66 #define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */ 67 #define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */ 68 #define PMU_INT_BATTERY 0x20 /* Battery state change */ 69 #define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */ 70 #define PMU_INT_TICK 0x80 /* 1-second tick interrupt */ 71 72 /* Other bits in PMU interrupt valid when PMU_INT_ADB is set */ 73 #define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */ 74 #define PMU_INT_WAITING_CHARGER 0x01 /* ??? */ 75 #define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */ 76 77 /* Bits in the environement message (either obtained via PMU_GET_COVER, 78 * or via PMU_INT_ENVIRONMENT on core99 */ 79 #define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */ 80 81 /* I2C related definitions */ 82 #define PMU_I2C_MODE_SIMPLE 0 83 #define PMU_I2C_MODE_STDSUB 1 84 #define PMU_I2C_MODE_COMBINED 2 85 86 #define PMU_I2C_BUS_STATUS 0 87 #define PMU_I2C_BUS_SYSCLK 1 88 #define PMU_I2C_BUS_POWER 2 89 90 #define PMU_I2C_STATUS_OK 0 91 #define PMU_I2C_STATUS_DATAREAD 1 92 #define PMU_I2C_STATUS_BUSY 0xfe 93 94 /* Kind of PMU (model) */ 95 enum { 96 PMU_UNKNOWN, 97 PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */ 98 PMU_HEATHROW_BASED, /* PowerBook G3 series */ 99 PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */ 100 PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */ 101 PMU_68K_V1, /* 68K PMU, version 1 */ 102 PMU_68K_V2, /* 68K PMU, version 2 */ 103 }; 104 105 /* PMU PMU_POWER_EVENTS commands */ 106 enum { 107 PMU_PWR_GET_POWERUP_EVENTS = 0x00, 108 PMU_PWR_SET_POWERUP_EVENTS = 0x01, 109 PMU_PWR_CLR_POWERUP_EVENTS = 0x02, 110 PMU_PWR_GET_WAKEUP_EVENTS = 0x03, 111 PMU_PWR_SET_WAKEUP_EVENTS = 0x04, 112 PMU_PWR_CLR_WAKEUP_EVENTS = 0x05, 113 }; 114 115 /* Power events wakeup bits */ 116 enum { 117 PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */ 118 PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */ 119 PMU_PWR_WAKEUP_AC_CHANGE = 0x04, 120 PMU_PWR_WAKEUP_LID_OPEN = 0x08, 121 PMU_PWR_WAKEUP_RING = 0x10, 122 }; 123 124 /* 125 * This table indicates for each PMU opcode: 126 * - the number of data bytes to be sent with the command, or -1 127 * if a length byte should be sent, 128 * - the number of response bytes which the PMU will return, or 129 * -1 if it will send a length byte. 130 */ 131 132 static const int8_t pmu_data_len[256][2] = { 133 /* 0 1 2 3 4 5 6 7 */ 134 {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 135 {-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 136 { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 137 { 0, 1},{ 0, 1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{ 0, 0}, 138 {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0}, 139 { 0, -1},{ 0, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{ 0, -1}, 140 { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 141 { 0, 4},{ 0, 20},{ 2, -1},{ 2, 1},{ 3, -1},{-1, -1},{-1, -1},{ 4, 0}, 142 { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 143 { 0, 1},{ 0, 1},{-1, -1},{ 1, 0},{ 1, 0},{-1, -1},{-1, -1},{-1, -1}, 144 { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0}, 145 { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0, -1},{-1, -1},{-1, -1},{-1, -1}, 146 { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 147 { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0, -1},{ 0, -1},{-1, -1},{-1, -1}, 148 { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 149 { 0, -1},{ 0, -1},{-1, -1},{-1, -1},{-1, -1},{ 5, 1},{ 4, 1},{ 4, 1}, 150 { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 151 { 0, 5},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 152 { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 153 { 0, 1},{ 0, 1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 154 { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0}, 155 { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 156 {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 157 {-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 158 {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 159 {-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 160 { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 161 { 1, 1},{ 1, 1},{-1, -1},{-1, -1},{ 0, 1},{ 0, -1},{-1, -1},{-1, -1}, 162 {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0}, 163 { 3, -1},{-1, -1},{ 0, 1},{-1, -1},{ 0, -1},{-1, -1},{-1, -1},{ 0, 0}, 164 {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 165 {-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1}, 166 }; 167 168 /* Command protocol state machine */ 169 typedef enum { 170 pmu_state_idle, /* Waiting for command */ 171 pmu_state_cmd, /* Receiving command */ 172 pmu_state_rsp, /* Responding to command */ 173 } PMUCmdState; 174 175 /* MOS6522 PMU */ 176 typedef struct MOS6522PMUState { 177 /*< private >*/ 178 MOS6522State parent_obj; 179 } MOS6522PMUState; 180 181 #define TYPE_MOS6522_PMU "mos6522-pmu" 182 #define MOS6522_PMU(obj) OBJECT_CHECK(MOS6522PMUState, (obj), \ 183 TYPE_MOS6522_PMU) 184 /** 185 * PMUState: 186 * @last_b: last value of B register 187 */ 188 189 typedef struct PMUState { 190 /*< private >*/ 191 SysBusDevice parent_obj; 192 /*< public >*/ 193 194 MemoryRegion mem; 195 uint64_t frequency; 196 qemu_irq via_irq; 197 bool via_irq_state; 198 199 /* PMU state */ 200 MOS6522PMUState mos6522_pmu; 201 202 /* PMU low level protocol state */ 203 PMUCmdState cmd_state; 204 uint8_t last_b; 205 uint8_t cmd; 206 uint32_t cmdlen; 207 uint32_t rsplen; 208 uint8_t cmd_buf_pos; 209 uint8_t cmd_buf[128]; 210 uint8_t cmd_rsp_pos; 211 uint8_t cmd_rsp_sz; 212 uint8_t cmd_rsp[128]; 213 214 /* PMU events/interrupts */ 215 uint8_t intbits; 216 uint8_t intmask; 217 218 /* ADB */ 219 bool has_adb; 220 ADBBusState adb_bus; 221 uint8_t adb_reply_size; 222 uint8_t adb_reply[ADB_MAX_OUT_LEN]; 223 224 /* RTC */ 225 uint32_t tick_offset; 226 QEMUTimer *one_sec_timer; 227 int64_t one_sec_target; 228 229 /* GPIO */ 230 MacIOGPIOState *gpio; 231 } PMUState; 232 233 #define TYPE_VIA_PMU "via-pmu" 234 #define VIA_PMU(obj) OBJECT_CHECK(PMUState, (obj), TYPE_VIA_PMU) 235 236 #endif /* PMU_H */ 237