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History log of /src/sys/arch/sgimips/gio/grtwo.c
RevisionDateAuthorComments
 1.19  13-Dec-2023  andvar Add (intptr_t) casts to fix "cast to pointer from integer of different size",
mainly for GENERIC64_32_* configs.
Also change segp->ds_len format specifier to %lld, which fixes DMA_DEBUG build.
 1.18  07-Aug-2021  thorpej Merge thorpej-cfargs2.
 1.17  24-Apr-2021  thorpej branches: 1.17.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).
 1.16  21-Nov-2020  thorpej branches: 1.16.2;
malloc(9) -> kmem(9)
 1.15  03-Sep-2018  riastradh branches: 1.15.12;
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!)
 1.14  04-Mar-2018  mrg branches: 1.14.2; 1.14.4;
#if 0 grtwo_cursor_data[] to match the #if 0'd code that uses it.
 1.13  27-Oct-2012  chs split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.
 1.12  11-Jan-2012  macallan branches: 1.12.6;
adjust for wsfont_find() change
 1.11  22-Nov-2009  mbalmer branches: 1.11.12; 1.11.16;
more s/the the/the/
 1.10  04-Mar-2007  christos branches: 1.10.44;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.9  29-Dec-2006  rumble branches: 1.9.2;
IP12 (and perhaps other systems) appear to be buggy and incapable of
reliably supporting badaddr(). False negatives appear to occur
approximately 1.8 percent of the time, although neither false positives
nor consecutive false negatives occur. We take advantage of the latter
property and always use a wrapper that makes multiple checks.

My IP12 no longer sees occasional ghost devices and related panics during
boot.
 1.8  28-Dec-2006  rumble Only probe on known supported base addresses.
 1.7  12-Apr-2006  jmmv branches: 1.7.8;
Add an extra cookie to the ioctl and mmap wsdisplay accessops that points
to the screen on which they are being called. The driver cannot guess
this by itself but it is needed to implement, at least, the getwschar and
putwschar functions in the correct place. There are no functional changes
yet.

Tested on i386 (vga, vga_raster, machfb, vesafb), macppc and sparc64.
Suggested and reviewed by macallan@.
 1.6  11-Dec-2005  christos branches: 1.6.4; 1.6.6; 1.6.8; 1.6.10; 1.6.12;
merge ktrace-lwp.
 1.5  29-Sep-2004  sekiya branches: 1.5.12;
Abbreviate identification message to fit in 80 columns.
 1.4  08-Jul-2004  sekiya branches: 1.4.2;
Remove unnecessary variables from grtwo_cnattach().
 1.3  07-Jul-2004  sekiya Oops. Remove reference to phantom variable.
 1.2  06-Jul-2004  sekiya Many fixes to the grtwo wscons driver:

* fills seem to be broken. Avoid filling large vertical regions; instead,
attempt to break it up into managable chunks. This doesn't work perfectly
either, so clear the screen row-by-row (which does work).
* Characters are now right-side-up
* the driver now uses screen coordinates properly.

With the exception of column erases (which fall prey to the fill issue), the
driver is now usable.
 1.1  18-Mar-2004  sekiya Checkpoint the GR2 wscons driver. Heavily derived from lonewolf@'s newport
driver. Still some issues:

* framebuffer setup seems incomplete. Some drawing primitives work 100%
of the time, while others fail one in ten tries. Perhaps my board is
slightly broken, as the exact model as probed by ARCS seems to shift
between Elan and XS24 from time to time.
* characters are drawn bottom-up rather than top-down (as the wsfont
definitions expect).
 1.4.2.6  13-Jan-2005  skrll Adapt to branch
 1.4.2.5  19-Oct-2004  skrll Sync with HEAD
 1.4.2.4  21-Sep-2004  skrll Fix the sync with head I botched.
 1.4.2.3  18-Sep-2004  skrll Sync with HEAD.
 1.4.2.2  03-Aug-2004  skrll Sync with HEAD
 1.4.2.1  08-Jul-2004  skrll file grtwo.c was added on branch ktrace-lwp on 2004-08-03 10:40:06 +0000
 1.5.12.3  03-Sep-2007  yamt sync with head.
 1.5.12.2  30-Dec-2006  yamt sync with head.
 1.5.12.1  21-Jun-2006  yamt sync with head.
 1.6.12.1  24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.6.10.1  19-Apr-2006  elad sync with head - hopefully this will work
 1.6.8.1  24-May-2006  yamt sync with head.
 1.6.6.1  22-Apr-2006  simonb Sync with head.
 1.6.4.1  09-Sep-2006  rpaulo sync with head
 1.7.8.1  12-Jan-2007  ad Sync with head.
 1.9.2.1  12-Mar-2007  rmind Sync with HEAD.
 1.10.44.1  11-Mar-2010  yamt sync with head
 1.11.16.1  18-Feb-2012  mrg merge to -current.
 1.11.12.2  30-Oct-2012  yamt sync with head
 1.11.12.1  17-Apr-2012  yamt sync with head
 1.12.6.1  20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.14.4.1  10-Jun-2019  christos Sync with HEAD
 1.14.2.1  06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.15.12.1  14-Dec-2020  thorpej Sync w/ HEAD.
 1.16.2.1  21-Mar-2021  thorpej Give config_found() the same variadic arguments treatment as
config_search(). This commit only adds the CFARG_EOL sentinel
to the existing config_found() calls. Conversion of config_found_sm_loc()
and config_found_ia() call sites will be in subsequent commits.
 1.17.8.1  04-Aug-2021  thorpej Adapt to CFARGS().

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