16cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt/* 26cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * Windfarm PowerMac thermal control 36cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * 46cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * Copyright 2012 Benjamin Herrenschmidt, IBM Corp. 56cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * 66cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * Released under the term of the GNU GPL v2. 76cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt */ 86cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 96cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt#ifndef __WINDFARM_MPU_H 106cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt#define __WINDFARM_MPU_H 116cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 126cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidttypedef unsigned short fu16; 136cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidttypedef int fs32; 146cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidttypedef short fs16; 156cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 166cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt/* Definition of the MPU data structure which contains per CPU 176cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * calibration information (among others) for the G5 machines 186cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt */ 196cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidtstruct mpu_data 206cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt{ 216cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 signature; /* 0x00 - EEPROM sig. */ 226cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 bytes_used; /* 0x01 - Bytes used in eeprom (160 ?) */ 236cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 size; /* 0x02 - EEPROM size (256 ?) */ 246cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 version; /* 0x03 - EEPROM version */ 256cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u32 data_revision; /* 0x04 - Dataset revision */ 266cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 processor_bin_code[3]; /* 0x08 - Processor BIN code */ 276cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 bin_code_expansion; /* 0x0b - ??? (padding ?) */ 286cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 processor_num; /* 0x0c - Number of CPUs on this MPU */ 296cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 input_mul_bus_div; /* 0x0d - Clock input multiplier/bus divider */ 306cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 reserved1[2]; /* 0x0e - */ 316cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u32 input_clk_freq_high; /* 0x10 - Input clock frequency high */ 326cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 cpu_nb_target_cycles; /* 0x14 - ??? */ 336cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 cpu_statlat; /* 0x15 - ??? */ 346cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 cpu_snooplat; /* 0x16 - ??? */ 356cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 cpu_snoopacc; /* 0x17 - ??? */ 366cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 nb_paamwin; /* 0x18 - ??? */ 376cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 nb_statlat; /* 0x19 - ??? */ 386cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 nb_snooplat; /* 0x1a - ??? */ 396cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 nb_snoopwin; /* 0x1b - ??? */ 406cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 api_bus_mode; /* 0x1c - ??? */ 416cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 reserved2[3]; /* 0x1d - */ 426cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u32 input_clk_freq_low; /* 0x20 - Input clock frequency low */ 436cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 processor_card_slot; /* 0x24 - Processor card slot number */ 446cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 reserved3[2]; /* 0x25 - */ 456cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 padjmax; /* 0x27 - Max power adjustment (Not in OF!) */ 466cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 ttarget; /* 0x28 - Target temperature */ 476cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 tmax; /* 0x29 - Max temperature */ 486cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 pmaxh; /* 0x2a - Max power */ 496cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 tguardband; /* 0x2b - Guardband temp ??? Hist. len in OSX */ 506cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs32 pid_gp; /* 0x2c - PID proportional gain */ 516cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs32 pid_gr; /* 0x30 - PID reset gain */ 526cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs32 pid_gd; /* 0x34 - PID derivative gain */ 536cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fu16 voph; /* 0x38 - Vop High */ 546cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fu16 vopl; /* 0x3a - Vop Low */ 556cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs16 nactual_die; /* 0x3c - nActual Die */ 566cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs16 nactual_heatsink; /* 0x3e - nActual Heatsink */ 576cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs16 nactual_system; /* 0x40 - nActual System */ 586cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u16 calibration_flags; /* 0x42 - Calibration flags */ 596cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fu16 mdiode; /* 0x44 - Diode M value (scaling factor) */ 606cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs16 bdiode; /* 0x46 - Diode B value (offset) */ 616cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt fs32 theta_heat_sink; /* 0x48 - Theta heat sink */ 626cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u16 rminn_intake_fan; /* 0x4c - Intake fan min RPM */ 636cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u16 rmaxn_intake_fan; /* 0x4e - Intake fan max RPM */ 646cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u16 rminn_exhaust_fan; /* 0x50 - Exhaust fan min RPM */ 656cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u16 rmaxn_exhaust_fan; /* 0x52 - Exhaust fan max RPM */ 666cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 processor_part_num[8]; /* 0x54 - Processor part number XX pumps min/max */ 676cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u32 processor_lot_num; /* 0x5c - Processor lot number */ 686cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 orig_card_sernum[0x10]; /* 0x60 - Card original serial number */ 696cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 curr_card_sernum[0x10]; /* 0x70 - Card current serial number */ 706cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u8 mlb_sernum[0x18]; /* 0x80 - MLB serial number */ 716cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u32 checksum1; /* 0x98 - */ 726cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt u32 checksum2; /* 0x9c - */ 736cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt}; /* Total size = 0xa0 */ 746cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 756cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidtstatic inline const struct mpu_data *wf_get_mpu(int cpu) 766cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt{ 776cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt struct device_node *np; 786cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt char nodename[64]; 796cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt const void *data; 806cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt int len; 816cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 826cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt /* 836cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * prom.c routine for finding a node by path is a bit brain dead 846cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * and requires exact @xxx unit numbers. This is a bit ugly but 856cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * will work for these machines 866cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt */ 876cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt sprintf(nodename, "/u3@0,f8000000/i2c@f8001000/cpuid@a%d", cpu ? 2 : 0); 886cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt np = of_find_node_by_path(nodename); 896cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt if (!np) 906cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt return NULL; 916cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt data = of_get_property(np, "cpuid", &len); 926cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt of_node_put(np); 936cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt if (!data) 946cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt return NULL; 956cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 966cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt /* 976cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * We are naughty, we have dropped the reference to the device 986cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * node and still return a pointer to the content. We know we 996cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * can do that though as this is only ever called on PowerMac 1006cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt * which cannot remove those nodes 1016cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt */ 1026cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt return data; 1036cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt} 1046cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt 1056cd3209967469f6e89d329deda6bb0b4700e7b62Benjamin Herrenschmidt#endif /* __WINDFARM_MPU_H */ 106