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macppc/if_gm.c (superseded by gem(4))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!)

branches: 1.25.58;
Don't pull in the whole uvm(9) API to access only PAGE_SIZE and
some other constants. These are provided by sys/param.h now.

branches: 1.24.22;
Remove clause 3 and 4 from TNF licenses

branches: 1.23.2; 1.23.4;
Split device_t/softc for MI ncr53c9x and some related devices,
with various cleanup.

branches: 1.22.6;
Use the VAX_PHYS_TO_S0 macro from vax/tc_machdep.h

Fix TC on VAX. (missed committing these earlier)

machine/{bus,cpu,intr}.h -> sys/{bus,cpu,intr}.h

branches: 1.19.2; 1.19.14; 1.19.16; 1.19.20;
fix fallout from caddr_t changes.

XXX what "volatile caddr_t" in if_le_ioasic.c was for?

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.17.14;
integrate kauth.

Use ANSI function decls, apply static.

Use device_private().

branches: 1.14.4; 1.14.6; 1.14.8; 1.14.10; 1.14.12;
merge ktrace-lwp.

branches: 1.13.2;
No 0x in front of %p...

de-__P

branches: 1.11.2; 1.11.10; 1.11.12;
DMA, not dma nor Dma.

Use PAGE_SIZE rather than NBPG.

hz -> Hz

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

don't need <sys/types.h> when including <sys/param.h>

add/cleanup RCSIDs

Use BUS_DMA_READ and BUS_DMA_WRITE in some obvious places.

branches: 1.2.2;
Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
(no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge

branches: 1.1.2; 1.1.4;
Repopulate TCDS dual channel SCSI adapter to MI dev/tc, squashing
internals for better layering between TCDS DMA ASIC and ASC SCSI
controller.