src/sys/conf/files.mips, branch main

mips: Remove sys/mips

2021-12-31T03:57:24Z

Remove sys/mips as the next step of decomissioning mips from the tree. Remove mips special cases from the kernel make files. Remove the mips specific linker scripts. Sponsored by: Netflix

netinet: Deduplicate most in_cksum() implementations

2021-11-24T18:31:16Z

in_cksum() and related routines are implemented separately for each platform, but only i386 and arm have optimized versions. Other platforms' copies of in_cksum.c are identical except for style differences and support for big-endian CPUs. Deduplicate the implementations for the rest of the platforms. This will make it easier to implement in_cksum() for unmapped mbufs. On arm and i386, define HAVE_MD_IN_CKSUM to mean that the MI implementation is not to be compiled. No functional change intended. Reviewed by: kp, glebius MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33095

Rename ofwpci.c to ofw_pcib.c

2021-05-20T09:22:25Z

It's a class0 driver that implements some pcib methods and creates a pci bus as its children. The "ofw_pci" name will be used by a new driver that will be a subclass of the pci bus. No functional changes intended. Submitted by: Kornel Duleba Reviewed by: andrew Obtained from: Semihalf Sponsored by: Alstom Group Differential Revision: https://reviews.freebsd.org/D30226

amd64: implement strlen in assembly

2021-02-08T19:15:21Z

The C variant in libkern performs excessive branching to find the non-zero byte instead of using the bsfq instruction. The same code patched to use it is still slower than the routine implemented here as the compiler keeps neglecting to perform certain optimizations (like using leaq). On top of that the routine can is a starting point for copyinstr which operates on words instead of bytes. Tested with glibc test suite. Sample results (calls/s): Haswell: $(perl -e "print 'A' x 3"): stock: 211198039 patched:338626619 asm: 465609618 $(perl -e "print 'A' x 100"): stock: 83151997 patched: 98285919 asm: 120719888 AMD EPYC 7R32: $(perl -e "print 'A' x 3"): stock: 282523617 asm: 491498172 $(perl -e "print 'A' x 100"): stock: 114857172 asm: 112082057

Move kern_clocksource.c to sys/conf/files

2020-11-19T02:53:29Z

Remove support for DES and Triple DES from OCF.

2020-05-11T21:34:29Z

It no longer has any in-kernel consumers via OCF. smbfs still uses single DES directly, so sys/crypto/des remains for that use case. Reviewed by: cem Relnotes: yes Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D24773

Remove support for the Blowfish algorithm from OCF.

2020-05-11T21:24:05Z

It no longer has any in-kernel consumers. Reviewed by: cem Relnotes: yes Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D24772

[PowerPC] [MIPS] Implement 32-bit kernel emulation of atomic64 operations

2020-01-02T23:20:37Z

This is a lock-based emulation of 64-bit atomics for kernel use, split off from an earlier patch by jhibbits. This is needed to unblock future improvements that reduce the need for locking on 64-bit platforms by using atomic updates. The implementation allows for future integration with userland atomic64, but as that implies going through sysarch for every use, the current status quo of userland doing its own locking may be for the best. Submitted by: jhibbits (original patch), kevans (mips bits) Reviewed by: jhibbits, jeff, kevans Differential Revision: https://reviews.freebsd.org/D22976

Add support for BERI statcounters.

2019-09-18T16:13:50Z

BERI stands for Bluespec Extensible RISC Implementation, based on MIPS. BERI has not implemented standard MIPS perfomance monitoring counters, instead it provides statistical counters. BERI statcounters have a several limitations: - They can't be written - They don't support start/stop operation - None of hardware interrupt is provided on a counter overflow. So make it separate to hwpmc_mips module and support process/system counting mode only. Sponsored by: DARPA, AFRL

Move scterm_teken.c from 6 MD files lists to the MI files list so that it

2019-02-21T17:31:33Z

is easier to configure. It is MI, unlike some of the other syscons files already in the MI list. Move scvtb.c similarly. It is needed whenever sc is configured, and is more MI than most of the files already in the MI list. This only changes the combined list for arm64 and mips. These arches already cannot build sc or even NOTES.