src/sys/sparc64/include/cpu.h, branch stable/13

Remove sparc64 kernel support

2020-02-03T17:35:11Z

Remove all sparc64 specific files Remove all sparc64 ifdefs Removee indireeect sparc64 ifdefs

Add a KPI for the delay while spinning on a spin lock.

2018-11-05T21:34:17Z

Replace a call to DELAY(1) with a new cpu_lock_delay() KPI. Currently cpu_lock_delay() is defined to DELAY(1) on all platforms. However, platforms with a DELAY() implementation that uses spin locks should implement a custom cpu_lock_delay() doesn't use locks. Reviewed by: kib MFC after: 3 days

sys: further adoption of SPDX licensing ID tags.

2017-11-20T19:43:44Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

Revert r253748,253749

2013-07-28T18:44:17Z

This WIP should not have been committed yet. Pointyhat to: avg

put contents of cpu.h under _KERNEL

2013-07-28T18:32:27Z

no userland-serviceable parts inside MFC after: 20 days

Mark cpu_{halt,reset}() as __dead2 as appropriate.

2012-01-27T22:04:43Z

- For Cheetah- and Zeus-class CPUs don't flush all unlocked entries from

2011-07-02T11:14:54Z

the TLBs in order to get rid of the user mappings but instead traverse them an flush only the latter like we also do for the Spitfire-class. Also flushing the unlocked kernel entries can cause instant faults which when called from within cpu_switch() are handled with the scheduler lock held which in turn can cause timeouts on the acquisition of the lock by other CPUs. This was easily seen with a 16-core V890 but occasionally also happened with 2-way machines. While at it, move the SPARC64-V support code entirely to zeus.c. This causes a little bit of duplication but is less confusing than partially using Cheetah-class bits for these. - For SPARC64-V ensure that 4-Mbyte page entries are stored in the 1024- entry, 2-way set associative TLB. - In {d,i}tlb_get_data_sun4u() turn off the interrupts in order to ensure that ASI_{D,I}TLB_DATA_ACCESS_REG actually are read twice back-to-back. Tested by: Peter Jeremy (16-core US-IV), Michael Moll (2-way SPARC64-V)

Some machines can not only consist of CPUs running at different speeds

2010-02-20T23:24:19Z

but also of different types, f.e. Sun Fire V890 can be equipped with a mix of UltraSPARC IV and IV+ CPUs, requiring different MMU initialization and different workarounds for model specific errata. Therefore move the CPU implementation number from a global variable to the per-CPU data. Functions which are called before the latter is available are passed the implementation number as a parameter now.

Flesh out MMU and cache handling of cheetah-class CPUs.

2008-09-04T19:58:52Z