^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Windfarm PowerMac thermal control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2012 Benjamin Herrenschmidt, IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #ifndef __WINDFARM_MPU_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define __WINDFARM_MPU_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) typedef unsigned short fu16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) typedef int fs32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) typedef short fs16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* Definition of the MPU data structure which contains per CPU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * calibration information (among others) for the G5 machines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct mpu_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) u8 signature; /* 0x00 - EEPROM sig. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) u8 bytes_used; /* 0x01 - Bytes used in eeprom (160 ?) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) u8 size; /* 0x02 - EEPROM size (256 ?) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) u8 version; /* 0x03 - EEPROM version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u32 data_revision; /* 0x04 - Dataset revision */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) u8 processor_bin_code[3]; /* 0x08 - Processor BIN code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u8 bin_code_expansion; /* 0x0b - ??? (padding ?) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) u8 processor_num; /* 0x0c - Number of CPUs on this MPU */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) u8 input_mul_bus_div; /* 0x0d - Clock input multiplier/bus divider */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) u8 reserved1[2]; /* 0x0e - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) u32 input_clk_freq_high; /* 0x10 - Input clock frequency high */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) u8 cpu_nb_target_cycles; /* 0x14 - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) u8 cpu_statlat; /* 0x15 - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) u8 cpu_snooplat; /* 0x16 - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u8 cpu_snoopacc; /* 0x17 - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) u8 nb_paamwin; /* 0x18 - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u8 nb_statlat; /* 0x19 - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) u8 nb_snooplat; /* 0x1a - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) u8 nb_snoopwin; /* 0x1b - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) u8 api_bus_mode; /* 0x1c - ??? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) u8 reserved2[3]; /* 0x1d - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u32 input_clk_freq_low; /* 0x20 - Input clock frequency low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) u8 processor_card_slot; /* 0x24 - Processor card slot number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) u8 reserved3[2]; /* 0x25 - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) u8 padjmax; /* 0x27 - Max power adjustment (Not in OF!) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u8 ttarget; /* 0x28 - Target temperature */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u8 tmax; /* 0x29 - Max temperature */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u8 pmaxh; /* 0x2a - Max power */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u8 tguardband; /* 0x2b - Guardband temp ??? Hist. len in OSX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) fs32 pid_gp; /* 0x2c - PID proportional gain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) fs32 pid_gr; /* 0x30 - PID reset gain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) fs32 pid_gd; /* 0x34 - PID derivative gain */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) fu16 voph; /* 0x38 - Vop High */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) fu16 vopl; /* 0x3a - Vop Low */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) fs16 nactual_die; /* 0x3c - nActual Die */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) fs16 nactual_heatsink; /* 0x3e - nActual Heatsink */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) fs16 nactual_system; /* 0x40 - nActual System */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u16 calibration_flags; /* 0x42 - Calibration flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) fu16 mdiode; /* 0x44 - Diode M value (scaling factor) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) fs16 bdiode; /* 0x46 - Diode B value (offset) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) fs32 theta_heat_sink; /* 0x48 - Theta heat sink */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u16 rminn_intake_fan; /* 0x4c - Intake fan min RPM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u16 rmaxn_intake_fan; /* 0x4e - Intake fan max RPM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u16 rminn_exhaust_fan; /* 0x50 - Exhaust fan min RPM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u16 rmaxn_exhaust_fan; /* 0x52 - Exhaust fan max RPM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u8 processor_part_num[8]; /* 0x54 - Processor part number XX pumps min/max */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u32 processor_lot_num; /* 0x5c - Processor lot number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u8 orig_card_sernum[0x10]; /* 0x60 - Card original serial number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u8 curr_card_sernum[0x10]; /* 0x70 - Card current serial number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) u8 mlb_sernum[0x18]; /* 0x80 - MLB serial number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) u32 checksum1; /* 0x98 - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) u32 checksum2; /* 0x9c - */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }; /* Total size = 0xa0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static inline const struct mpu_data *wf_get_mpu(int cpu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) struct device_node *np;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) char nodename[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) const void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * prom.c routine for finding a node by path is a bit brain dead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * and requires exact @xxx unit numbers. This is a bit ugly but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * will work for these machines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) sprintf(nodename, "/u3@0,f8000000/i2c@f8001000/cpuid@a%d", cpu ? 2 : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) np = of_find_node_by_path(nodename);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (!np)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) data = of_get_property(np, "cpuid", &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) of_node_put(np);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * We are naughty, we have dropped the reference to the device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * node and still return a pointer to the content. We know we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * can do that though as this is only ever called on PowerMac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * which cannot remove those nodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif /* __WINDFARM_MPU_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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