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/freebsd/sys/dev/isci/scil/
H A Dscu_bios_definitions.h2 * SPDX-License-Identifier: BSD-2-Clause OR GPL-2.0
12 * it under the terms of version 2 of the GNU General Public License as
252 * Bit 2 = This controller's PHY index 2 (0x04)
285 * array[2] = 0x01
398 * NOTE: Max spread for SATA is +0 / -5000 PPM.
401 * SATA SSC Tx at +0 / -1419 PPM Spread = 0x2
402 * SATA SSC Tx at +0 / -2129 PPM Spread = 0x3
403 * SATA SSC Tx at +0 / -4257 PPM Spread = 0x6
404 * SATA SSC Tx at +0 / -4967 PPM Spread = 0x7
411 * NOTE: Max spread for SAS down-spreading +0 / -2300 PPM
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/freebsd/lib/libsys/
H A Dntp_adjtime.21 .\" $NetBSD: ntp_adjtime.2,v 1.6 2003/04/16 13:34:55 wiz Exp $
14 .\" 2. Redistributions in binary form must reproduce the above copyright
82 long freq; /* frequency offset (scaled ppm) (rw) */
89 * ppm) (ro) */
95 long ppsfreq; /* pps frequency (scaled ppm) (ro) */
98 long stabil; /* pps stability (scaled ppm) (ro) */
137 Frequency offset (scaled ppm) (read-write).
203 Logarithm to base 2 of the interval duration in seconds (PPS,
206 PPS stability (scaled ppm); dispersion (wander) measured by the
/freebsd/lib/libpmcstat/
H A Dlibpmcstat_process.c10 * 2. Redistributions in binary form must reproduce the above copyright
194 struct pmcstat_pcmap *ppm; in pmcstat_process_find_map() local
196 TAILQ_FOREACH(ppm, &p->pp_map, ppm_next) { in pmcstat_process_find_map()
197 if (pc >= ppm->ppm_lowpc && pc < ppm->ppm_highpc) in pmcstat_process_find_map()
198 return (ppm); in pmcstat_process_find_map()
199 if (pc < ppm->ppm_lowpc) in pmcstat_process_find_map()
219 struct pmcstat_pcmap *ppm, *ppmtmp; in pmcstat_process_lookup() local
229 TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, in pmcstat_process_lookup()
231 TAILQ_REMOVE(&pp->pp_map, ppm, in pmcstat_process_lookup()
233 free(ppm); in pmcstat_process_lookup()
H A Dlibpmcstat_logging.c10 * 2. Redistributions in binary form must reproduce the above copyright
198 struct pmcstat_pcmap *ppm, *ppmtmp; in pmcstat_analyze_log() local
341 TAILQ_FOREACH_SAFE(ppm, &pp->pp_map, ppm_next, ppmtmp) { in pmcstat_analyze_log()
342 TAILQ_REMOVE(&pp->pp_map, ppm, ppm_next); in pmcstat_analyze_log()
343 free(ppm); in pmcstat_analyze_log()
398 TAILQ_FOREACH(ppm, &pp->pp_map, ppm_next) in pmcstat_analyze_log()
399 pmcstat_image_link(ppnew, ppm->ppm_image, in pmcstat_analyze_log()
400 ppm->ppm_lowpc); in pmcstat_analyze_log()
602 struct pmcstat_pcmap *ppm, *ppmtmp; in pmcstat_shutdown_logging() local
613 args->pa_verbosity >= 2) in pmcstat_shutdown_logging()
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/freebsd/sys/contrib/device-tree/Bindings/iio/afe/
H A Dtemperature-transducer.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
78 alpha-ppm-per-celsius:
92 - alpha-ppm-per-celsius
103 alpha-ppm-per-celsius = <1>; /* 1 uA/K */
109 io-channels = <&temp_adc 2>;
112 alpha-ppm-per-celsius = <4000>; /* 4 mV/K */
H A Dtemperature-sense-rtd.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
62 alpha-ppm-per-celsius:
87 - alpha-ppm-per-celsius
98 alpha-ppm-per-celsius = <3908>;
/freebsd/usr.sbin/pmcstat/
H A Dpmcpl_callgraph.c2 * SPDX-License-Identifier: BSD-2-Clause
16 * 2. Redistributions in binary form must reproduce the above copyright
132 struct pmcstat_pcmap *ppm; in pmcstat_cgnode_hash_lookup_pc() local
140 ppm = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, pc); in pmcstat_cgnode_hash_lookup_pc()
141 if (ppm == NULL) in pmcstat_cgnode_hash_lookup_pc()
144 image = ppm->ppm_image; in pmcstat_cgnode_hash_lookup_pc()
146 loadaddress = ppm->ppm_lowpc + image->pi_vaddr - image->pi_start; in pmcstat_cgnode_hash_lookup_pc()
333 struct pmcstat_pcmap *ppm; in pmcpl_cg_process() local
377 ppm = pmcstat_process_find_map(usermode ? pp : km, pc); in pmcpl_cg_process()
378 if (ppm in pmcpl_cg_process()
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H A Dpmcpl_calltree.c2 * SPDX-License-Identifier: BSD-2-Clause
12 * 2. Redistributions in binary form must reproduce the above copyright
121 #define PMCPL_PCT_BLACK 2
576 pmcstat_pmcinfilter, pmcstat_displayheight - 2); in pmcpl_ct_topdisplay()
606 * `ppm'.
733 struct pmcstat_pcmap *ppm[PMC_CALLCHAIN_DEPTH_MAX]; in pmcpl_ct_process() local
751 ppm[n] = pmcstat_process_find_map(usermode ? in pmcpl_ct_process()
753 if (ppm[n] == NULL) { in pmcpl_ct_process()
756 ppm[n] = pmcstat_process_find_map(pp, cc[n]); in pmcpl_ct_process()
757 if (ppm[n] != NULL) in pmcpl_ct_process()
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/freebsd/contrib/ntp/kernel/sys/
H A Dtimex.h99 #define SHIFT_KH 2 /* FLL frequency factor (shift) */
145 * plus 100 ppm for vernier frequency adjustments. If the kernel
159 #define MAXFREQ (512L << SHIFT_USEC) /* max freq error (100 ppm) */
162 #define MAXFREQ (512L << SHIFT_USEC) /* max freq error (200 ppm) */
188 #define PPS_AVG 2 /* pps averaging constant (shift) */
189 #define PPS_SHIFT 2 /* min interval duration (s) (shift) */
238 #define TIME_DEL 2 /* delete leap second warning */
246 * Note: maximum error = NTP synch distance = dispersion + delay / 2;
262 long freq; /* frequency offset (scaled ppm) (rw) */
269 * ppm) (ro) */
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/freebsd/sys/sys/
H A Dtimex.h57 #define SCALE_PPM (65536 / 1000) /* crude ns/s to scaled PPM */
104 #define TIME_DEL 2 /* delete leap second warning */
110 * NTP user interface -- ntp_gettime(2) - used to read kernel clock values
121 * NTP daemon interface -- ntp_adjtime(2) -- used to discipline CPU clock
130 long freq; /* frequency offset (scaled PPM) (rw) */
137 * PPM) (ro) */
144 long ppsfreq; /* PPS frequency (scaled PPM) (ro) */
147 long stabil; /* PPS stability (scaled PPM) (ro) */
/freebsd/contrib/ntp/scripts/stats/
H A Dloop.awk6 # MJD sec time (s) freq (ppm) poll
9 # format of output dataset (time values in milliseconds, freq in ppm)
42 …2f+/-%0.3f, var %.3f\n", loop_count, (loop_tmax + loop_tmin) / 2 * 1e6, (loop_tmax - loop_tmin) / …
/freebsd/contrib/ntp/util/
H A Dkern.c25 #define MAXFREQ 200 /* max frequency error (ppm) */
26 #define TAU 2 /* time constant (shift 0 - 6) */
41 int fixtick; /* amortization constant (ppm) */
50 long time_tolerance = MAXFREQ; /* frequency tolerance (ppm) */
55 long time_freq = 0; /* frequency offset (scaled ppm) */
H A Dntptime.c41 "\20\1OFFSET\2FREQUENCY\3MAXERROR\4ESTERROR\5STATUS\6TIMECONST\
45 "\20\1PLL\2PPSFREQ\3PPSTIME\4FLL\5INS\6DEL\7UNSYNC\10FREQHOLD\
60 #define TS_MASK_NS 0xfffffffc /* 1/2^30, for nsec */
183 -f frequency Frequency error (-500 .. 500) (ppm)\n\ in main()
211 exit(2); in main()
345 printf(" us, frequency %.3f ppm, interval %d s,\n", in main()
353 " time constant %lu, precision %.3f us, tolerance %.0f ppm,\n", in main()
360 printf(" pps frequency %.3f ppm, stability %.3f ppm, jitter %.3f us,\n", in main()
/freebsd/contrib/ntp/html/hints/
H A Dsolaris.html73 oscillator frequency tolerance of +-100 parts-per-million (PPM), which is
79 release, this tolerance has been increased to +-500 PPM. <p>However, in the
136 than 500 PPM. For machines with a value of <tt>tick</tt> in the 10-ms range,
138 about 100 PPM. In order to determine the value of <tt>tick</tt> for a
148 which sets tick 100 PPM fast, <tt>tickadj</tt> to 5 microseconds and turns
212 of at most 2 seconds will complete in 20 seconds.
220 clock should be within 2 seconds of the correct time.
/freebsd/contrib/ntp/html/
H A Ddiscipline.html29 … filtered update <em>V<sub>s</sub></em>. The loop filter implements a type-2 proportional-integra…
33 …2. By construction, the time constant exponent is five times the poll interval exponent. Thus, t…
34 …ily, a step correction would causes a temporary frequency surge of about 5 PPM, which along with t…
40 …ciplined to within one part per million (PPM), even when the clock oscillator native frequency off…
43 …nterval. This generally results in a residual frequency error less than 1 PPM. The measurement i…
H A Dclock.html33 … using these options. The slew rate is fixed at 500 parts-per-million (PPM) by the Unix kernel…
35 …valent to a poll exponent of 2), but does not adjust the frequency. Assuming that the frequency ha…
40 …of the interval. This generally results in a frequency error less than 0.5 PPM. Note that, if the …
H A Daudio.html37 …PPM. In order for the driver to reliably lock on the audio signal, the sample clock frequency tole…
38 …o select the input port and to monitor the input signal. The <tt>fudge flag 2</tt> command selects…
H A Ddebug.html45 …licit calendar dates, times are in milliseconds and frequencies are in parts-per-million (PPM).</p>
58 …sometimes above 500 PPM. While the daemon can handle frequency errors up to 500 PPM, or 43 seconds…
59 …ference divided by the time difference. If the frequency is much above 100 PPM, the <a href="ticka…
75 …and the <tt>ntpd</tt> implementation is basically complete. Autokey version 2, which is the latest…
/freebsd/contrib/bsnmp/snmp_ntp/
H A DBEGEMOT-NTP-MIB.txt13 -- 2. Redistributions in binary form must reproduce the above copyright
79 ::= { begemotNtpObjects 2 }
108 "Current jitter in seconds multiplied by 2^32."
116 "Current stability in ppm multiplied by 2^32."
124 "Jitter trap threshold in seconds multiplied by 2^32."
132 "Stability trap threshold in ppm multiplied by 2^32."
/freebsd/sys/dev/usb/net/
H A Dif_ipheth.c2 * SPDX-License-Identifier: BSD-2-Clause
12 * 2. Redistributions in binary form must reproduce the above copyright
370 ipheth_free_queue(struct mbuf **ppm, uint8_t n) in ipheth_free_queue() argument
375 if (ppm[x] != NULL) { in ipheth_free_queue()
376 m_freem(ppm[x]); in ipheth_free_queue()
377 ppm[x] = NULL; in ipheth_free_queue()
/freebsd/sys/contrib/dev/iwlwifi/mvm/
H A Dptp.c14 /* The scaled_ppm parameter is ppm (parts per million) with a 16-bit fractional
16 * 2^-16 ppm, and 2^16=65536 is 1 ppm.
/freebsd/sys/dev/firewire/
H A Diec13213.h13 * 2. Redistributions in binary form must reproduce the above copyright
64 #define CSRTYPE_L (2 << CSRTYPE_SHIFT) /* Leaf */
69 * 00 - 2F: defined by CSR architecture standards.
173 cyc_clk_acc:8, /* 0 <= ppm <= 100 */
174 max_rec:4, /* (2 << max_rec) bytes */
175 :2,
176 max_rom:2,
184 max_rom:2,
185 :2,
186 max_rec:4, /* (2 << max_rec) bytes */
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/freebsd/contrib/ntp/html/drivers/
H A Ddriver36.html24 …e reliable signal capture, the codec frequency error must be less than 187 PPM (.0187 percent). If…
25 …he accuracy depends on the computer clock oscillator stability, ordinarily better than 0.5 PPM.</p>
36 … of the second (<i>e</i><sub>0</sub>). The bipolar data signal is expressed 2<i>s</i><sub>1</sub> …
44 …PPM. Under most conditions, the averaging interval doubles in stages from the initial value to 102…
63 …ispersion. Assuming the system clock frequency can be disciplined within 1 PPM, it can coast witho…
78 …odes the station (<tt>WV</tt> for WWV, <tt>WH</tt> for WWVH) and frequency (2, 5, 10, 15 or 20), <…
121 …<dd>The frequency offset is the current estimate of the codec frequency offset to within 0.1 PPM. …
127 … 86 and 5 bit errors during the last minute. The current frequency is 66.4 PPM and the averaging i…
/freebsd/contrib/ntp/scripts/calc_tickadj/
H A Dcalc_tickadj.in30 # Drift file is in PPM where Milion is actually 2**20
31 my $cvt = (2 ** 20) / $tick;
/freebsd/sys/contrib/device-tree/Bindings/clock/
H A Dsilabs,si570.txt6 found in the data sheets[2][3].
9 [2] Si570/571 Data Sheet
23 - temperature-stability: Temperature stability of the device in PPM. Should be

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