| /linux-6.8/tools/perf/pmu-events/arch/arm64/arm/neoverse-n2-v2/ |
| D | fp_operation.json | 4 … "PublicDescription": "Counts speculatively executed half precision floating point operations."
8 … "PublicDescription": "Counts speculatively executed single precision floating point operations."
12 … "PublicDescription": "Counts speculatively executed double precision floating point operations."
16 …"PublicDescription": "Counts speculatively executed scalable single precision floating point opera…
20 …"PublicDescription": "Counts speculatively executed non-scalable single precision floating point o…
|
| /linux-6.8/tools/perf/pmu-events/arch/arm64/ |
| D | common-and-microarch.json | 129 "PublicDescription": "Attributable Level 1 data cache write-back",
132 "BriefDescription": "Attributable Level 1 data cache write-back"
147 "PublicDescription": "Attributable Level 2 data cache write-back",
150 "BriefDescription": "Attributable Level 2 data cache write-back"
273 "PublicDescription": "Access to another socket in a multi-socket system",
276 "BriefDescription": "Access to another socket in a multi-socket system"
303 … "PublicDescription": "Attributable memory read access to another socket in a multi-socket system",
306 … "BriefDescription": "Attributable memory read access to another socket in a multi-socket system"
309 …"PublicDescription": "Level 1 data cache long-latency read miss. The counter counts each memory r…
312 "BriefDescription": "Level 1 data cache long-latency read miss"
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| /linux-6.8/arch/x86/math-emu/ |
| D | reg_round.S | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 /*---------------------------------------------------------------------------+
10 | Australia. E-mail billm@suburbia.net |
20 | Return value is the tag of the answer, or-ed with FPU_Exception if |
21 | one was raised, or -1 on internal error. |
26 +---------------------------------------------------------------------------*/
28 /*---------------------------------------------------------------------------+
47 | must be non-zero. |
48 | If the significand extension is non-zero then the significand is |
52 | non-zero values: |
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| D | README | 1 +---------------------------------------------------------------------------+
2 | wm-FPU-emu an FPU emulator for 80386 and 80486SX microprocessors. |
6 | Australia. E-mail billm@melbpc.org.au |
21 +---------------------------------------------------------------------------+
25 wm-FPU-emu is an FPU emulator for Linux. It is derived from wm-emu387
27 msdos); wm-emu387 was in turn based upon emu387 which was written by
31 My target FPU for wm-FPU-emu is that described in the Intel486
40 wm-FPU-emu does not implement all of the behaviour of the 80486 FPU,
52 --Bill Metzenthen
56 ----------------------- Internals of wm-FPU-emu -----------------------
[all …]
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| /linux-6.8/tools/perf/pmu-events/arch/x86/sapphirerapids/ |
| D | floating-point.json | 68 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
71 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
76 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
79 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
84 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
87 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
92 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
95 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
100 …-bit packed single and 256-bit packed double precision FP instructions retired; some instructions …
103 …-bit packed single precision and 256-bit packed double precision floating-point instructions reti…
[all …]
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| /linux-6.8/tools/perf/pmu-events/arch/x86/emeraldrapids/ |
| D | floating-point.json | 68 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
71 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
76 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
79 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
84 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
87 …-bit packed double precision floating-point instructions retired; some instructions will count twi…
92 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
95 …-bit packed single precision floating-point instructions retired; some instructions will count twi…
100 …-bit packed single and 256-bit packed double precision FP instructions retired; some instructions …
103 …-bit packed single precision and 256-bit packed double precision floating-point instructions reti…
[all …]
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| /linux-6.8/Documentation/devicetree/bindings/riscv/ |
| D | extensions.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V ISA extensions
10 - Paul Walmsley <paul.walmsley@sifive.com>
11 - Palmer Dabbelt <palmer@sifive.com>
12 - Conor Dooley <conor@kernel.org>
15 RISC-V has a large number of extensions, some of which are "standard"
16 extensions, meaning they are ratified by RISC-V International, and others
36 Identifies the specific RISC-V instruction set architecture
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| /linux-6.8/drivers/gpu/drm/i915/gt/ |
| D | selftest_ring.c | 1 // SPDX-License-Identifier: GPL-2.0
14 kref_init(&ring->ref); in mock_ring()
15 ring->size = sz; in mock_ring()
16 ring->wrap = BITS_PER_TYPE(ring->size) - ilog2(sz); in mock_ring()
17 ring->effective_size = sz; in mock_ring()
18 ring->vaddr = (void *)(ring + 1); in mock_ring()
19 atomic_set(&ring->pin_count, 1); in mock_ring()
39 result = -1; in check_ring_direction()
46 return -EINVAL; in check_ring_direction()
60 err |= check_ring_direction(ring, prev, next, -1); in check_ring_step()
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| /linux-6.8/arch/m68k/fpsp040/ |
| D | satanh.S | 9 | Input: Double-extended number X in location pointed to
12 | Output: The value arctanh(X) returned in floating-point register Fp0.
16 | result is subsequently rounded to double precision. The
17 | result is provably monotonic in double precision.
29 | z := 2y/(1-y)
36 | divide-by-zero by
63 |--ATANH(X) = X FOR DENORMALIZED X
75 |--THIS IS THE USUAL CASE, |X| < 1
76 |--Y = |X|, Z = 2Y/(1-Y), ATANH(X) = SIGN(X) * (1/2) * LOG1P(Z).
80 fnegx %fp1 | ...-Y
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| D | ssin.S | 9 | Input: Double-extended number X in location pointed to
20 | result is subsequently rounded to double precision. The
21 | result is provably monotonic in double precision.
32 | 2. If |X| >= 15Pi or |X| < 2**(-40), go to 7.
40 | 5. (k is odd) Set j := (k-1)/2, sgn := (-1)**j. Return sgn*cos(r)
45 | 6. (k is even) Set j := k/2, sgn := (-1)**j. Return sgn*sin(r)
52 | 8. (|X|<2**(-40)) If SIN is invoked, return X; otherwise return 1.
57 | 1. If |X| >= 15Pi or |X| < 2**(-40), go to 6.
64 | 4. (k is odd) Set j1 := (k-1)/2, j2 := j1 (EOR) (k mod 2), i.e.
66 | sgn1 := (-1)**j1, sgn2 := (-1)**j2.
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| D | stan.S | 8 | Input: Double-extended number X in location pointed to
11 | Output: The value tan(X) returned in floating-point register Fp0.
15 | result is subsequently rounded to double precision. The
16 | result is provably monotonic in double precision.
24 | 1. If |X| >= 15Pi or |X| < 2**(-40), go to 6.
37 | 4. (k is odd) Tan(X) = -cot(r). Since tan(r) is approximated by a
41 | -Cot(r) = -V/U. Exit.
45 | 7. (|X|<2**(-40)) Tan(X) = X. Exit.
83 |--N*PI/2, -32 <= N <= 32, IN A LEADING TERM IN EXT. AND TRAILING
84 |--TERM IN SGL. NOTE THAT PI IS 64-BIT LONG, THUS N*PI/2 IS AT
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| /linux-6.8/drivers/net/ethernet/qualcomm/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
59 supports IEEE 802.3-2002, half-duplex mode at 10/100 Mb/s,
60 full-duplex mode at 10/100/1000Mb/s, Wake On LAN (WOL) for
61 low power, Receive-Side Scaling (RSS), and IEEE 1588-2008
62 Precision Clock Synchronization Protocol.
|
| /linux-6.8/tools/perf/Documentation/ |
| D | topdown.txt | 2 ---------------------
11 perf stat --topdown implements this using available metrics that vary
14 % perf stat -a --topdown -I1000
84 int slots_fd = perf_event_open(&slots, 0, -1, -1, 0);
104 int metrics_fd = perf_event_open(&metrics, 0, -1, slots_fd, 0);
205 retiring_slots = GET_METRIC(metric_b, 0) * slots_b - retiring_slots_a
206 bad_spec_slots = GET_METRIC(metric_b, 1) * slots_b - bad_spec_slots_a
207 fe_bound_slots = GET_METRIC(metric_b, 2) * slots_b - fe_bound_slots_a
208 be_bound_slots = GET_METRIC(metric_b, 3) * slots_b - be_bound_slots_a
213 slots_delta = slots_b - slots_a
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| /linux-6.8/arch/powerpc/kernel/ |
| D | vecemu.c | 1 // SPDX-License-Identifier: GPL-2.0
36 * Computes an estimate of 2^x. The `s' argument is the 32-bit
37 * single-precision floating-point representation of x.
45 exp = ((s >> 23) & 0xff) - 127; in eexp2()
50 /* 2^-big = 0, 2^+big = +Inf */ in eexp2()
53 if (exp < -23) in eexp2()
61 pwr >>= -exp; in eexp2()
63 pwr = -pwr; in eexp2()
69 if (exp < -23) in eexp2()
85 exp = -exp; in eexp2()
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| /linux-6.8/arch/mips/dec/ |
| D | time.c | 1 // SPDX-License-Identifier: GPL-2.0
6 * This file contains the time handling details for PC-style clocks as
15 #include <asm/cpu-features.h>
55 year += real_year - 72 + 2000; in read_persistent_clock64()
57 ts->tv_sec = mktime64(year, mon, day, hour, min, sec); in read_persistent_clock64()
58 ts->tv_nsec = 0; in read_persistent_clock64()
96 if (((abs(real_minutes - cmos_minutes) + 15) / 30) & 1) in update_persistent_clock64()
97 real_minutes += 30; /* correct for half hour time zone */ in update_persistent_clock64()
100 if (abs(real_minutes - cmos_minutes) < 30) { in update_persistent_clock64()
111 retval = -1; in update_persistent_clock64()
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| /linux-6.8/drivers/net/dsa/mv88e6xxx/ |
| D | chip.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Marvell 88E6xxx Ethernet switch single-chip definition
28 /* PVT limits for 4-bit port and 5-bit switch */
110 * enum mv88e6xxx_edsa_support - Ethertype DSA tag support level
149 * ports 2-4 are not routet to pins.
152 /* Multi-chip Addressing Mode.
154 * when it is non-zero, and use indirect access to internal registers.
157 /* Dual-chip Addressing Mode
158 * Some chips respond to only half of the 32 SMI addresses,
354 /* Handles automatic disabling and re-enabling of the PHY
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| /linux-6.8/arch/m68k/ |
| D | Kconfig.cpu | 1 # SPDX-License-Identifier: GPL-2.0
13 applications, and are all System-On-Chip (SOC) devices, as opposed
53 System-On-Chip devices (eg 68328, 68302, etc). It does not contain
126 Select the type of ColdFire System-on-Chip (SoC) that you want
328 At some point in the future, this will cause floating-point math
330 floating-point math coprocessor. Thrill-seekers and chronically
331 sleep-deprived psychotic hacker types can say Y now, everyone else
335 bool "Math emulation extra precision"
349 This option prevents any floating-point instructions from being
352 kernel will only be usable on machines without a floating-point
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| /linux-6.8/arch/parisc/math-emu/ |
| D | sfadd.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
5 * Floating-point emulation code
6 * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
15 * Single_add: add two single precision values.
33 * Single_add: add two single precision values.
259 diff_exponent = result_exponent - right_exponent; in sgl_fadd()
305 /* Must have been "x-x" or "x+(-x)". */ in sgl_fadd()
311 result_exponent--; in sgl_fadd()
347 if((result_exponent -= 8) <= 0 && !underflowtrap) in sgl_fadd()
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| D | dfadd.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
5 * Floating-point emulation code
6 * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
15 * Double_add: add two double precision values.
33 * Double_add: add two double precision values.
263 diff_exponent = result_exponent - right_exponent; in dbl_fadd()
310 /* Must have been "x-x" or "x+(-x)". */ in dbl_fadd()
316 result_exponent--; in dbl_fadd()
352 if((result_exponent -= 8) <= 0 && !underflowtrap) in dbl_fadd()
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| D | sfsub.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
5 * Floating-point emulation code
6 * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
15 * Single_subtract: subtract two single precision values.
33 * Single_subtract: subtract two single precision values.
262 diff_exponent = result_exponent - right_exponent; in sgl_fsub()
308 /* Must have been "x-x" or "x+(-x)". */ in sgl_fsub()
314 result_exponent--; in sgl_fsub()
350 if((result_exponent -= 8) <= 0 && !underflowtrap) in sgl_fsub()
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| D | dfsub.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
5 * Floating-point emulation code
6 * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
15 * Double_subtract: subtract two double precision values.
33 * Double_subtract: subtract two double precision values.
266 diff_exponent = result_exponent - right_exponent; in dbl_fsub()
313 /* Must have been "x-x" or "x+(-x)". */ in dbl_fsub()
319 result_exponent--; in dbl_fsub()
355 if((result_exponent -= 8) <= 0 && !underflowtrap) in dbl_fsub()
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| D | fpudispatch.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Linux/PA-RISC Project (http://www.parisc-linux.org/)
5 * Floating-point emulation code
6 * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
52 #define extru(r,pos,len) (((r) >> (31-(pos))) & (( 1 << (len)) - 1))
73 * the following are for the multi-ops
106 * positions 21-22
111 * located at bit positions 16-18
116 * at bit positions 15-16 (PA1.1) or 14-16 (PA2.0)
160 /* on pa-linux the fpu type is not filled in by the in parisc_linux_get_fpu_type()
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| /linux-6.8/Documentation/networking/device_drivers/ethernet/stmicro/ |
| D | stmmac.rst | 1 .. SPDX-License-Identifier: GPL-2.0+
13 - In This Release
14 - Feature List
15 - Kernel Configuration
16 - Command Line Parameters
17 - Driver Information and Notes
18 - Debug Information
19 - Support
33 (and older) and DesignWare(R) Cores Ethernet Quality-of-Service version 4.0
35 DesignWare(R) Cores XGMAC - 10G Ethernet MAC and DesignWare(R) Cores
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| /linux-6.8/arch/m68k/ifpsp060/src/ |
| D | fplsp.S | 3 M68000 Hi-Performance Microprocessor Division
5 Production Release P1.00 -- October 10, 1994
276 set LV, -LOCAL_SIZE # stack offset
285 set EXC_AREGS, -68 # offset of all address regs
286 set EXC_DREGS, -100 # offset of all data regs
287 set EXC_FPREGS, -36 # offset of all fp regs
372 set FTEMP_EX, 0 # extended precision
379 set LOCAL_EX, 0 # extended precision
386 set DST_EX, 0 # extended precision
391 set SRC_EX, 0 # extended precision
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| /linux-6.8/drivers/iio/gyro/ |
| D | mpu3050-core.c | 1 // SPDX-License-Identifier: GPL-2.0-only
39 * Register map: anything suffixed *_H is a big-endian high byte and always
76 /* Bits 8-11 select memory bank */
163 * Fullscale precision is (for finest precision) +/- 250 deg/s, so the full
184 if (mpu3050->lpf == MPU3050_DLPF_CFG_256HZ_NOLPF2) in mpu3050_get_freq()
188 freq /= (mpu3050->divisor + 1); in mpu3050_get_freq()
200 ret = regmap_update_bits(mpu3050->map, MPU3050_PWR_MGM, in mpu3050_start_sampling()
205 /* Turn on the Z-axis PLL */ in mpu3050_start_sampling()
206 ret = regmap_update_bits(mpu3050->map, MPU3050_PWR_MGM, in mpu3050_start_sampling()
214 raw_val[i] = cpu_to_be16(mpu3050->calibration[i]); in mpu3050_start_sampling()
[all …]
|