is for "standard PC i/o stuff" at known and constant locations, e.g. when
multi-io chips are used on non-ISA mainboards.
Implement drsupio.c, the DraCo version of this.
Attach the generic com.c to this bus.
Remove the old drcom hack.
Currently, this is only kind of a wrapper around the *_sicallback() function
family. This way, we'll only break the new driver if it doesn't work.
After more drivers are converted, we'll change it to be the other way round.
(currently only CD-ROM drives on i386). The sys/dev/scsipi system provides 2
busses to which devices can attach (scsibus and atapibus). This needed to
change some include files and structure names in the low level scsi drivers.
user to:
- get entries from a file other than "calendar".
- get entries for a different date than today.
- get entries for a whole week in advance, or only one day.
processing of /etc/ld.so.conf in ld.so itself (rather than in /etc/rc):
- added do_conf function and call to it in main to implement internal
processing of /etc/ld.so.conf
- moved maintenance of dir_list to dodir, with an added argument to
dodir to specify whether dir_list should be updated
- added option '-c' to suppress processing of /etc/ld.so.conf
- added option '-S' to suppress processing of std directories (but not
/etc/ld.so.conf)
- modified option -s to suppress processing of _both_ std directories
and /etc/ld.so.conf (i.e., it is equivalent to -cS)--this was done
so that users and scripts that interpret -s as meaning "process
only directories specified on the command line" would not be
startled
From PR #4031. One change was not committed, since it was unnecessary
(option variables are in the BSS, and do not need to be initialized to
0 explicitly).
Plus one change from me:
- getopt() returns -1 when completed, not EOF.
two DMA channels to do e.g. full-duplex. This allows
a way of specifying the second channel in a sane way.
THIS IS TEMPORARY. The drq2 locator will go away when
the locator system has been changed to allow multiple
values per locator.
* hoist code to deal with fragments of a 16-byte chunk outside
main copy loop.
* over 98% of dynamic calls are 2-byte-algnied but not 4-byte-aligned
(due to 14-byte Ether headers). kernel bcopy is poorly tune for this.
Replace bcopy() with inline code tuned to minimize accesses
to DMA buffers, which aren't uncached on mips.
Tested on 5000/240 (3MAXPLUS) and 3000/700 (sandpiper) (mjacob@feral.com)
device memory mapping cacheable/non-cacheable:
- PG_N doesn't exist on the 386.
- pmap_changebit() only deals with managed pages.
Basically, calling it is unnecessary, and never did anything. Pointed
out by Chuck Cranor, and further discussed with Frank van der Linden.
Also, add a comment about why we don't mark pages non-cacheable in
_bus_dmamem_map().
is