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717 lines
18 KiB
717 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Windfarm PowerMac thermal control. |
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* Control loops for machines with SMU and PPC970MP processors. |
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* |
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* Copyright (C) 2005 Paul Mackerras, IBM Corp. <[email protected]> |
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* Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp. |
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*/ |
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#include <linux/types.h> |
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#include <linux/errno.h> |
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#include <linux/kernel.h> |
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#include <linux/device.h> |
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#include <linux/platform_device.h> |
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#include <linux/reboot.h> |
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#include <asm/prom.h> |
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#include <asm/smu.h> |
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#include "windfarm.h" |
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#include "windfarm_pid.h" |
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#define VERSION "0.2" |
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#define DEBUG |
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#undef LOTSA_DEBUG |
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#ifdef DEBUG |
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#define DBG(args...) printk(args) |
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#else |
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#define DBG(args...) do { } while(0) |
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#endif |
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#ifdef LOTSA_DEBUG |
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#define DBG_LOTS(args...) printk(args) |
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#else |
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#define DBG_LOTS(args...) do { } while(0) |
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#endif |
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|
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/* define this to force CPU overtemp to 60 degree, useful for testing |
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* the overtemp code |
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*/ |
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#undef HACKED_OVERTEMP |
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/* We currently only handle 2 chips, 4 cores... */ |
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#define NR_CHIPS 2 |
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#define NR_CORES 4 |
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#define NR_CPU_FANS 3 * NR_CHIPS |
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|
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/* Controls and sensors */ |
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static struct wf_sensor *sens_cpu_temp[NR_CORES]; |
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static struct wf_sensor *sens_cpu_power[NR_CORES]; |
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static struct wf_sensor *hd_temp; |
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static struct wf_sensor *slots_power; |
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static struct wf_sensor *u4_temp; |
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static struct wf_control *cpu_fans[NR_CPU_FANS]; |
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static char *cpu_fan_names[NR_CPU_FANS] = { |
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"cpu-rear-fan-0", |
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"cpu-rear-fan-1", |
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"cpu-front-fan-0", |
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"cpu-front-fan-1", |
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"cpu-pump-0", |
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"cpu-pump-1", |
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}; |
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static struct wf_control *cpufreq_clamp; |
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/* Second pump isn't required (and isn't actually present) */ |
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#define CPU_FANS_REQD (NR_CPU_FANS - 2) |
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#define FIRST_PUMP 4 |
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#define LAST_PUMP 5 |
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|
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/* We keep a temperature history for average calculation of 180s */ |
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#define CPU_TEMP_HIST_SIZE 180 |
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|
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/* Scale factor for fan speed, *100 */ |
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static int cpu_fan_scale[NR_CPU_FANS] = { |
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100, |
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100, |
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97, /* inlet fans run at 97% of exhaust fan */ |
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97, |
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100, /* updated later */ |
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100, /* updated later */ |
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}; |
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static struct wf_control *backside_fan; |
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static struct wf_control *slots_fan; |
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static struct wf_control *drive_bay_fan; |
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/* PID loop state */ |
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static struct wf_cpu_pid_state cpu_pid[NR_CORES]; |
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static u32 cpu_thist[CPU_TEMP_HIST_SIZE]; |
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static int cpu_thist_pt; |
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static s64 cpu_thist_total; |
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static s32 cpu_all_tmax = 100 << 16; |
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static int cpu_last_target; |
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static struct wf_pid_state backside_pid; |
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static int backside_tick; |
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static struct wf_pid_state slots_pid; |
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static bool slots_started; |
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static struct wf_pid_state drive_bay_pid; |
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static int drive_bay_tick; |
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static int nr_cores; |
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static int have_all_controls; |
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static int have_all_sensors; |
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static bool started; |
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static int failure_state; |
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#define FAILURE_SENSOR 1 |
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#define FAILURE_FAN 2 |
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#define FAILURE_PERM 4 |
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#define FAILURE_LOW_OVERTEMP 8 |
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#define FAILURE_HIGH_OVERTEMP 16 |
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/* Overtemp values */ |
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#define LOW_OVER_AVERAGE 0 |
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#define LOW_OVER_IMMEDIATE (10 << 16) |
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#define LOW_OVER_CLEAR ((-10) << 16) |
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#define HIGH_OVER_IMMEDIATE (14 << 16) |
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#define HIGH_OVER_AVERAGE (10 << 16) |
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#define HIGH_OVER_IMMEDIATE (14 << 16) |
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/* Implementation... */ |
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static int create_cpu_loop(int cpu) |
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{ |
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int chip = cpu / 2; |
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int core = cpu & 1; |
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struct smu_sdbp_header *hdr; |
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struct smu_sdbp_cpupiddata *piddata; |
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struct wf_cpu_pid_param pid; |
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struct wf_control *main_fan = cpu_fans[0]; |
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s32 tmax; |
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int fmin; |
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/* Get FVT params to get Tmax; if not found, assume default */ |
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hdr = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL); |
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if (hdr) { |
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struct smu_sdbp_fvt *fvt = (struct smu_sdbp_fvt *)&hdr[1]; |
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tmax = fvt->maxtemp << 16; |
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} else |
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tmax = 95 << 16; /* default to 95 degrees C */ |
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/* We keep a global tmax for overtemp calculations */ |
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if (tmax < cpu_all_tmax) |
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cpu_all_tmax = tmax; |
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kfree(hdr); |
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/* Get PID params from the appropriate SAT */ |
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hdr = smu_sat_get_sdb_partition(chip, 0xC8 + core, NULL); |
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if (hdr == NULL) { |
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printk(KERN_WARNING"windfarm: can't get CPU PID fan config\n"); |
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return -EINVAL; |
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} |
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piddata = (struct smu_sdbp_cpupiddata *)&hdr[1]; |
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/* |
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* Darwin has a minimum fan speed of 1000 rpm for the 4-way and |
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* 515 for the 2-way. That appears to be overkill, so for now, |
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* impose a minimum of 750 or 515. |
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*/ |
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fmin = (nr_cores > 2) ? 750 : 515; |
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/* Initialize PID loop */ |
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pid.interval = 1; /* seconds */ |
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pid.history_len = piddata->history_len; |
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pid.gd = piddata->gd; |
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pid.gp = piddata->gp; |
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pid.gr = piddata->gr / piddata->history_len; |
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pid.pmaxadj = (piddata->max_power << 16) - (piddata->power_adj << 8); |
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pid.ttarget = tmax - (piddata->target_temp_delta << 16); |
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pid.tmax = tmax; |
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pid.min = main_fan->ops->get_min(main_fan); |
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pid.max = main_fan->ops->get_max(main_fan); |
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if (pid.min < fmin) |
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pid.min = fmin; |
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wf_cpu_pid_init(&cpu_pid[cpu], &pid); |
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kfree(hdr); |
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return 0; |
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} |
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static void cpu_max_all_fans(void) |
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{ |
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int i; |
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/* We max all CPU fans in case of a sensor error. We also do the |
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* cpufreq clamping now, even if it's supposedly done later by the |
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* generic code anyway, we do it earlier here to react faster |
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*/ |
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if (cpufreq_clamp) |
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wf_control_set_max(cpufreq_clamp); |
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for (i = 0; i < NR_CPU_FANS; ++i) |
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if (cpu_fans[i]) |
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wf_control_set_max(cpu_fans[i]); |
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} |
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static int cpu_check_overtemp(s32 temp) |
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{ |
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int new_state = 0; |
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s32 t_avg, t_old; |
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/* First check for immediate overtemps */ |
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if (temp >= (cpu_all_tmax + LOW_OVER_IMMEDIATE)) { |
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new_state |= FAILURE_LOW_OVERTEMP; |
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if ((failure_state & FAILURE_LOW_OVERTEMP) == 0) |
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printk(KERN_ERR "windfarm: Overtemp due to immediate CPU" |
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" temperature !\n"); |
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} |
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if (temp >= (cpu_all_tmax + HIGH_OVER_IMMEDIATE)) { |
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new_state |= FAILURE_HIGH_OVERTEMP; |
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if ((failure_state & FAILURE_HIGH_OVERTEMP) == 0) |
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printk(KERN_ERR "windfarm: Critical overtemp due to" |
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" immediate CPU temperature !\n"); |
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} |
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/* We calculate a history of max temperatures and use that for the |
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* overtemp management |
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*/ |
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t_old = cpu_thist[cpu_thist_pt]; |
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cpu_thist[cpu_thist_pt] = temp; |
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cpu_thist_pt = (cpu_thist_pt + 1) % CPU_TEMP_HIST_SIZE; |
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cpu_thist_total -= t_old; |
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cpu_thist_total += temp; |
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t_avg = cpu_thist_total / CPU_TEMP_HIST_SIZE; |
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DBG_LOTS("t_avg = %d.%03d (out: %d.%03d, in: %d.%03d)\n", |
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FIX32TOPRINT(t_avg), FIX32TOPRINT(t_old), FIX32TOPRINT(temp)); |
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/* Now check for average overtemps */ |
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if (t_avg >= (cpu_all_tmax + LOW_OVER_AVERAGE)) { |
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new_state |= FAILURE_LOW_OVERTEMP; |
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if ((failure_state & FAILURE_LOW_OVERTEMP) == 0) |
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printk(KERN_ERR "windfarm: Overtemp due to average CPU" |
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" temperature !\n"); |
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} |
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if (t_avg >= (cpu_all_tmax + HIGH_OVER_AVERAGE)) { |
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new_state |= FAILURE_HIGH_OVERTEMP; |
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if ((failure_state & FAILURE_HIGH_OVERTEMP) == 0) |
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printk(KERN_ERR "windfarm: Critical overtemp due to" |
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" average CPU temperature !\n"); |
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} |
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/* Now handle overtemp conditions. We don't currently use the windfarm |
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* overtemp handling core as it's not fully suited to the needs of those |
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* new machine. This will be fixed later. |
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*/ |
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if (new_state) { |
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/* High overtemp -> immediate shutdown */ |
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if (new_state & FAILURE_HIGH_OVERTEMP) |
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machine_power_off(); |
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if ((failure_state & new_state) != new_state) |
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cpu_max_all_fans(); |
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failure_state |= new_state; |
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} else if ((failure_state & FAILURE_LOW_OVERTEMP) && |
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(temp < (cpu_all_tmax + LOW_OVER_CLEAR))) { |
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printk(KERN_ERR "windfarm: Overtemp condition cleared !\n"); |
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failure_state &= ~FAILURE_LOW_OVERTEMP; |
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} |
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return failure_state & (FAILURE_LOW_OVERTEMP | FAILURE_HIGH_OVERTEMP); |
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} |
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static void cpu_fans_tick(void) |
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{ |
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int err, cpu; |
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s32 greatest_delta = 0; |
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s32 temp, power, t_max = 0; |
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int i, t, target = 0; |
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struct wf_sensor *sr; |
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struct wf_control *ct; |
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struct wf_cpu_pid_state *sp; |
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DBG_LOTS(KERN_DEBUG); |
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for (cpu = 0; cpu < nr_cores; ++cpu) { |
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/* Get CPU core temperature */ |
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sr = sens_cpu_temp[cpu]; |
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err = sr->ops->get_value(sr, &temp); |
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if (err) { |
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DBG("\n"); |
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printk(KERN_WARNING "windfarm: CPU %d temperature " |
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"sensor error %d\n", cpu, err); |
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failure_state |= FAILURE_SENSOR; |
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cpu_max_all_fans(); |
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return; |
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} |
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/* Keep track of highest temp */ |
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t_max = max(t_max, temp); |
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/* Get CPU power */ |
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sr = sens_cpu_power[cpu]; |
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err = sr->ops->get_value(sr, &power); |
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if (err) { |
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DBG("\n"); |
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printk(KERN_WARNING "windfarm: CPU %d power " |
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"sensor error %d\n", cpu, err); |
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failure_state |= FAILURE_SENSOR; |
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cpu_max_all_fans(); |
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return; |
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} |
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/* Run PID */ |
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sp = &cpu_pid[cpu]; |
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t = wf_cpu_pid_run(sp, power, temp); |
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if (cpu == 0 || sp->last_delta > greatest_delta) { |
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greatest_delta = sp->last_delta; |
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target = t; |
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} |
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DBG_LOTS("[%d] P=%d.%.3d T=%d.%.3d ", |
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cpu, FIX32TOPRINT(power), FIX32TOPRINT(temp)); |
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} |
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DBG_LOTS("fans = %d, t_max = %d.%03d\n", target, FIX32TOPRINT(t_max)); |
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/* Darwin limits decrease to 20 per iteration */ |
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if (target < (cpu_last_target - 20)) |
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target = cpu_last_target - 20; |
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cpu_last_target = target; |
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for (cpu = 0; cpu < nr_cores; ++cpu) |
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cpu_pid[cpu].target = target; |
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/* Handle possible overtemps */ |
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if (cpu_check_overtemp(t_max)) |
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return; |
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/* Set fans */ |
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for (i = 0; i < NR_CPU_FANS; ++i) { |
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ct = cpu_fans[i]; |
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if (ct == NULL) |
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continue; |
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err = ct->ops->set_value(ct, target * cpu_fan_scale[i] / 100); |
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if (err) { |
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printk(KERN_WARNING "windfarm: fan %s reports " |
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"error %d\n", ct->name, err); |
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failure_state |= FAILURE_FAN; |
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break; |
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} |
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} |
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} |
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/* Backside/U4 fan */ |
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static struct wf_pid_param backside_param = { |
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.interval = 5, |
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.history_len = 2, |
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.gd = 48 << 20, |
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.gp = 5 << 20, |
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.gr = 0, |
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.itarget = 64 << 16, |
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.additive = 1, |
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}; |
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static void backside_fan_tick(void) |
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{ |
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s32 temp; |
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int speed; |
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int err; |
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if (!backside_fan || !u4_temp) |
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return; |
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if (!backside_tick) { |
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/* first time; initialize things */ |
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printk(KERN_INFO "windfarm: Backside control loop started.\n"); |
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backside_param.min = backside_fan->ops->get_min(backside_fan); |
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backside_param.max = backside_fan->ops->get_max(backside_fan); |
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wf_pid_init(&backside_pid, &backside_param); |
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backside_tick = 1; |
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} |
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if (--backside_tick > 0) |
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return; |
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backside_tick = backside_pid.param.interval; |
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err = u4_temp->ops->get_value(u4_temp, &temp); |
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if (err) { |
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printk(KERN_WARNING "windfarm: U4 temp sensor error %d\n", |
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err); |
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failure_state |= FAILURE_SENSOR; |
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wf_control_set_max(backside_fan); |
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return; |
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} |
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speed = wf_pid_run(&backside_pid, temp); |
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DBG_LOTS("backside PID temp=%d.%.3d speed=%d\n", |
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FIX32TOPRINT(temp), speed); |
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err = backside_fan->ops->set_value(backside_fan, speed); |
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if (err) { |
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printk(KERN_WARNING "windfarm: backside fan error %d\n", err); |
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failure_state |= FAILURE_FAN; |
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} |
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} |
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/* Drive bay fan */ |
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static struct wf_pid_param drive_bay_prm = { |
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.interval = 5, |
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.history_len = 2, |
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.gd = 30 << 20, |
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.gp = 5 << 20, |
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.gr = 0, |
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.itarget = 40 << 16, |
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.additive = 1, |
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}; |
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static void drive_bay_fan_tick(void) |
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{ |
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s32 temp; |
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int speed; |
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int err; |
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if (!drive_bay_fan || !hd_temp) |
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return; |
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if (!drive_bay_tick) { |
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/* first time; initialize things */ |
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printk(KERN_INFO "windfarm: Drive bay control loop started.\n"); |
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drive_bay_prm.min = drive_bay_fan->ops->get_min(drive_bay_fan); |
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drive_bay_prm.max = drive_bay_fan->ops->get_max(drive_bay_fan); |
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wf_pid_init(&drive_bay_pid, &drive_bay_prm); |
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drive_bay_tick = 1; |
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} |
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if (--drive_bay_tick > 0) |
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return; |
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drive_bay_tick = drive_bay_pid.param.interval; |
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err = hd_temp->ops->get_value(hd_temp, &temp); |
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if (err) { |
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printk(KERN_WARNING "windfarm: drive bay temp sensor " |
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"error %d\n", err); |
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failure_state |= FAILURE_SENSOR; |
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wf_control_set_max(drive_bay_fan); |
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return; |
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} |
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speed = wf_pid_run(&drive_bay_pid, temp); |
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DBG_LOTS("drive_bay PID temp=%d.%.3d speed=%d\n", |
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FIX32TOPRINT(temp), speed); |
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err = drive_bay_fan->ops->set_value(drive_bay_fan, speed); |
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if (err) { |
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printk(KERN_WARNING "windfarm: drive bay fan error %d\n", err); |
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failure_state |= FAILURE_FAN; |
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} |
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} |
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/* PCI slots area fan */ |
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/* This makes the fan speed proportional to the power consumed */ |
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static struct wf_pid_param slots_param = { |
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.interval = 1, |
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.history_len = 2, |
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.gd = 0, |
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.gp = 0, |
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.gr = 0x1277952, |
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.itarget = 0, |
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.min = 1560, |
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.max = 3510, |
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}; |
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static void slots_fan_tick(void) |
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{ |
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s32 power; |
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int speed; |
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int err; |
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if (!slots_fan || !slots_power) |
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return; |
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if (!slots_started) { |
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/* first time; initialize things */ |
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printk(KERN_INFO "windfarm: Slots control loop started.\n"); |
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wf_pid_init(&slots_pid, &slots_param); |
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slots_started = true; |
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} |
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err = slots_power->ops->get_value(slots_power, &power); |
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if (err) { |
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printk(KERN_WARNING "windfarm: slots power sensor error %d\n", |
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err); |
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failure_state |= FAILURE_SENSOR; |
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wf_control_set_max(slots_fan); |
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return; |
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} |
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speed = wf_pid_run(&slots_pid, power); |
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DBG_LOTS("slots PID power=%d.%.3d speed=%d\n", |
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FIX32TOPRINT(power), speed); |
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err = slots_fan->ops->set_value(slots_fan, speed); |
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if (err) { |
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printk(KERN_WARNING "windfarm: slots fan error %d\n", err); |
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failure_state |= FAILURE_FAN; |
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} |
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} |
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static void set_fail_state(void) |
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{ |
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int i; |
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|
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if (cpufreq_clamp) |
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wf_control_set_max(cpufreq_clamp); |
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for (i = 0; i < NR_CPU_FANS; ++i) |
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if (cpu_fans[i]) |
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wf_control_set_max(cpu_fans[i]); |
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if (backside_fan) |
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wf_control_set_max(backside_fan); |
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if (slots_fan) |
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wf_control_set_max(slots_fan); |
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if (drive_bay_fan) |
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wf_control_set_max(drive_bay_fan); |
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} |
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|
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static void pm112_tick(void) |
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{ |
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int i, last_failure; |
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|
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if (!started) { |
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started = true; |
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printk(KERN_INFO "windfarm: CPUs control loops started.\n"); |
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for (i = 0; i < nr_cores; ++i) { |
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if (create_cpu_loop(i) < 0) { |
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failure_state = FAILURE_PERM; |
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set_fail_state(); |
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break; |
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} |
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} |
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DBG_LOTS("cpu_all_tmax=%d.%03d\n", FIX32TOPRINT(cpu_all_tmax)); |
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|
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#ifdef HACKED_OVERTEMP |
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cpu_all_tmax = 60 << 16; |
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#endif |
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} |
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|
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/* Permanent failure, bail out */ |
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if (failure_state & FAILURE_PERM) |
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return; |
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/* Clear all failure bits except low overtemp which will be eventually |
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* cleared by the control loop itself |
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*/ |
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last_failure = failure_state; |
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failure_state &= FAILURE_LOW_OVERTEMP; |
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cpu_fans_tick(); |
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backside_fan_tick(); |
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slots_fan_tick(); |
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drive_bay_fan_tick(); |
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|
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DBG_LOTS("last_failure: 0x%x, failure_state: %x\n", |
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last_failure, failure_state); |
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|
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/* Check for failures. Any failure causes cpufreq clamping */ |
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if (failure_state && last_failure == 0 && cpufreq_clamp) |
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wf_control_set_max(cpufreq_clamp); |
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if (failure_state == 0 && last_failure && cpufreq_clamp) |
|
wf_control_set_min(cpufreq_clamp); |
|
|
|
/* That's it for now, we might want to deal with other failures |
|
* differently in the future though |
|
*/ |
|
} |
|
|
|
static void pm112_new_control(struct wf_control *ct) |
|
{ |
|
int i, max_exhaust; |
|
|
|
if (cpufreq_clamp == NULL && !strcmp(ct->name, "cpufreq-clamp")) { |
|
if (wf_get_control(ct) == 0) |
|
cpufreq_clamp = ct; |
|
} |
|
|
|
for (i = 0; i < NR_CPU_FANS; ++i) { |
|
if (!strcmp(ct->name, cpu_fan_names[i])) { |
|
if (cpu_fans[i] == NULL && wf_get_control(ct) == 0) |
|
cpu_fans[i] = ct; |
|
break; |
|
} |
|
} |
|
if (i >= NR_CPU_FANS) { |
|
/* not a CPU fan, try the others */ |
|
if (!strcmp(ct->name, "backside-fan")) { |
|
if (backside_fan == NULL && wf_get_control(ct) == 0) |
|
backside_fan = ct; |
|
} else if (!strcmp(ct->name, "slots-fan")) { |
|
if (slots_fan == NULL && wf_get_control(ct) == 0) |
|
slots_fan = ct; |
|
} else if (!strcmp(ct->name, "drive-bay-fan")) { |
|
if (drive_bay_fan == NULL && wf_get_control(ct) == 0) |
|
drive_bay_fan = ct; |
|
} |
|
return; |
|
} |
|
|
|
for (i = 0; i < CPU_FANS_REQD; ++i) |
|
if (cpu_fans[i] == NULL) |
|
return; |
|
|
|
/* work out pump scaling factors */ |
|
max_exhaust = cpu_fans[0]->ops->get_max(cpu_fans[0]); |
|
for (i = FIRST_PUMP; i <= LAST_PUMP; ++i) |
|
if ((ct = cpu_fans[i]) != NULL) |
|
cpu_fan_scale[i] = |
|
ct->ops->get_max(ct) * 100 / max_exhaust; |
|
|
|
have_all_controls = 1; |
|
} |
|
|
|
static void pm112_new_sensor(struct wf_sensor *sr) |
|
{ |
|
unsigned int i; |
|
|
|
if (!strncmp(sr->name, "cpu-temp-", 9)) { |
|
i = sr->name[9] - '0'; |
|
if (sr->name[10] == 0 && i < NR_CORES && |
|
sens_cpu_temp[i] == NULL && wf_get_sensor(sr) == 0) |
|
sens_cpu_temp[i] = sr; |
|
|
|
} else if (!strncmp(sr->name, "cpu-power-", 10)) { |
|
i = sr->name[10] - '0'; |
|
if (sr->name[11] == 0 && i < NR_CORES && |
|
sens_cpu_power[i] == NULL && wf_get_sensor(sr) == 0) |
|
sens_cpu_power[i] = sr; |
|
} else if (!strcmp(sr->name, "hd-temp")) { |
|
if (hd_temp == NULL && wf_get_sensor(sr) == 0) |
|
hd_temp = sr; |
|
} else if (!strcmp(sr->name, "slots-power")) { |
|
if (slots_power == NULL && wf_get_sensor(sr) == 0) |
|
slots_power = sr; |
|
} else if (!strcmp(sr->name, "backside-temp")) { |
|
if (u4_temp == NULL && wf_get_sensor(sr) == 0) |
|
u4_temp = sr; |
|
} else |
|
return; |
|
|
|
/* check if we have all the sensors we need */ |
|
for (i = 0; i < nr_cores; ++i) |
|
if (sens_cpu_temp[i] == NULL || sens_cpu_power[i] == NULL) |
|
return; |
|
|
|
have_all_sensors = 1; |
|
} |
|
|
|
static int pm112_wf_notify(struct notifier_block *self, |
|
unsigned long event, void *data) |
|
{ |
|
switch (event) { |
|
case WF_EVENT_NEW_SENSOR: |
|
pm112_new_sensor(data); |
|
break; |
|
case WF_EVENT_NEW_CONTROL: |
|
pm112_new_control(data); |
|
break; |
|
case WF_EVENT_TICK: |
|
if (have_all_controls && have_all_sensors) |
|
pm112_tick(); |
|
} |
|
return 0; |
|
} |
|
|
|
static struct notifier_block pm112_events = { |
|
.notifier_call = pm112_wf_notify, |
|
}; |
|
|
|
static int wf_pm112_probe(struct platform_device *dev) |
|
{ |
|
wf_register_client(&pm112_events); |
|
return 0; |
|
} |
|
|
|
static int wf_pm112_remove(struct platform_device *dev) |
|
{ |
|
wf_unregister_client(&pm112_events); |
|
/* should release all sensors and controls */ |
|
return 0; |
|
} |
|
|
|
static struct platform_driver wf_pm112_driver = { |
|
.probe = wf_pm112_probe, |
|
.remove = wf_pm112_remove, |
|
.driver = { |
|
.name = "windfarm", |
|
}, |
|
}; |
|
|
|
static int __init wf_pm112_init(void) |
|
{ |
|
struct device_node *cpu; |
|
|
|
if (!of_machine_is_compatible("PowerMac11,2")) |
|
return -ENODEV; |
|
|
|
/* Count the number of CPU cores */ |
|
nr_cores = 0; |
|
for_each_node_by_type(cpu, "cpu") |
|
++nr_cores; |
|
|
|
printk(KERN_INFO "windfarm: initializing for dual-core desktop G5\n"); |
|
|
|
#ifdef MODULE |
|
request_module("windfarm_smu_controls"); |
|
request_module("windfarm_smu_sensors"); |
|
request_module("windfarm_smu_sat"); |
|
request_module("windfarm_lm75_sensor"); |
|
request_module("windfarm_max6690_sensor"); |
|
request_module("windfarm_cpufreq_clamp"); |
|
|
|
#endif /* MODULE */ |
|
|
|
platform_driver_register(&wf_pm112_driver); |
|
return 0; |
|
} |
|
|
|
static void __exit wf_pm112_exit(void) |
|
{ |
|
platform_driver_unregister(&wf_pm112_driver); |
|
} |
|
|
|
module_init(wf_pm112_init); |
|
module_exit(wf_pm112_exit); |
|
|
|
MODULE_AUTHOR("Paul Mackerras <[email protected]>"); |
|
MODULE_DESCRIPTION("Thermal control for PowerMac11,2"); |
|
MODULE_LICENSE("GPL"); |
|
MODULE_ALIAS("platform:windfarm");
|
|
|