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History log of /src/sys/arch/arm/clps711x/clpscom.c
RevisionDateAuthorComments
 1.11  01-Sep-2023  andvar fix typo in the type krandsource_t -> krndsource_t.

fixes RND_COM enabled build for epoc32.
 1.10  26-Oct-2022  riastradh ddb/db_active.h: New home for extern db_active.

This can be included unconditionally, and db_active can then be
queried unconditionally; if DDB is not in the kernel, then db_active
is a constant zero. Reduces need for #include opt_ddb.h, #ifdef DDB.
 1.9  20-Nov-2020  thorpej malloc(9) -> kmem(9)
 1.8  10-Nov-2019  chs branches: 1.8.8;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.
 1.7  03-Sep-2018  riastradh Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)
 1.6  13-Apr-2015  riastradh branches: 1.6.16; 1.6.18;
MD rnd.h cleanups. Please let me know if I broke anything!
 1.5  15-Nov-2014  christos branches: 1.5.2;
centralize the call unit / dialout macros
 1.4  10-Aug-2014  tls Merge tls-earlyentropy branch into HEAD.
 1.3  25-Jul-2014  dholland Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.
 1.2  16-Mar-2014  dholland branches: 1.2.2; 1.2.4;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.
 1.1  28-Apr-2013  kiyohara branches: 1.1.4; 1.1.6;
Add support SoC CL PS-711x.
 1.1.6.1  18-May-2014  rmind sync with head
 1.1.4.4  03-Dec-2017  jdolecek update from HEAD
 1.1.4.3  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.1.4.2  23-Jun-2013  tls resync from head
 1.1.4.1  28-Apr-2013  tls file clpscom.c was added on branch tls-maxphys on 2013-06-23 06:20:00 +0000
 1.2.4.2  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.2.4.1  16-Mar-2014  yamt file clpscom.c was added on branch yamt-pagecache on 2014-05-22 11:39:31 +0000
 1.2.2.2  10-Aug-2014  tls Rebase.
 1.2.2.1  07-Apr-2014  tls Be a little more clear and consistent about harvesting entropy from devices:

1) deprecate RND_FLAG_NO_ESTIMATE

2) define RND_FLAG_COLLECT_TIME, RND_FLAG_COLLECT_VALUE

3) define RND_FLAG_ESTIMATE_TIME, RND_FLAG_ESTIMATE_VALUE

4) define RND_FLAG_DEFAULT: RND_FLAG_COLLECT_TIME|
RND_FLAG_COLLECT_VALUE|RND_FLAG_ESTIMATE_TIME

5) Make entropy harvesting from environmental sensors a little more generic
and remove it from individual sensor drivers.

6) Remove individual open-coded delta-estimators for values from a few
places in the tree (uvm, environmental drivers).

7) 0 -> RND_FLAG_DEFAULT, actually gather entropy from various drivers
that had stubbed out code, other minor cleanups.
 1.5.2.1  06-Jun-2015  skrll Sync with HEAD
 1.6.18.2  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.6.18.1  10-Jun-2019  christos Sync with HEAD
 1.6.16.1  06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.8.8.1  14-Dec-2020  thorpej Sync w/ HEAD.

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