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author | sos <sos@FreeBSD.org> | 1997-09-04 18:49:53 +0000 |
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committer | sos <sos@FreeBSD.org> | 1997-09-04 18:49:53 +0000 |
commit | 4d6dd4fc2d4b7a4112c261c7c34037dbe9de3e56 (patch) | |
tree | d9d1bc4feef0cf975d010ef759400307cbbd7302 /sys/conf/NOTES | |
parent | fb633824a1760e5b18d4ec464cabc4e5e9c28cbf (diff) | |
download | FreeBSD-src-4d6dd4fc2d4b7a4112c261c7c34037dbe9de3e56.zip FreeBSD-src-4d6dd4fc2d4b7a4112c261c7c34037dbe9de3e56.tar.gz |
Upgrade of EIDE DMA support, Johns comments:
* lots of fixes to error handling-- mostly works now
* improve DMA timing config for Triton chipsets-- PIIX4 and UDMA drive
still untested
* generally improve DMA config in many ways-- mostly cleanup
* clean up boot-time messages
* rewrite PRD generation algorithm
* first wd timeout is now longer, to handle drive spinup
Submitted by: John Hood <cgull@smoke.marlboro.vt.us>
Diffstat (limited to 'sys/conf/NOTES')
-rw-r--r-- | sys/conf/NOTES | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES index 1761da2..4ffd358 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -2,7 +2,7 @@ # LINT -- config file for checking all the sources, tries to pull in # as much of the source tree as it can. # -# $Id: LINT,v 1.359 1997/08/28 12:18:07 jkh Exp $ +# $Id: LINT,v 1.360 1997/08/28 15:00:05 jlemon Exp $ # # NB: You probably don't want to try running a kernel built from this # file. Instead, you should start from GENERIC, and add options from @@ -724,8 +724,6 @@ controller wds0 at isa? port 0x350 bio irq 15 drq 6 vector wdsintr # # ST-506, ESDI, and IDE hard disks: `wdc' and `wd' # -# NB: ``Enhanced IDE'' is NOT supported at this time. -# # The flags fields are used to enable the multi-sector I/O and # the 32BIT I/O modes. The flags may be used in either the controller # definition or in the individual disk definitions. The controller @@ -735,7 +733,10 @@ controller wds0 at isa? port 0x350 bio irq 15 drq 6 vector wdsintr # The low 8 bits are the maximum value for the multi-sector I/O, # where 0xff defaults to the maximum that the drive can handle. # The high bit of the 16 bit flags (0x8000) allows probing for -# 32 bit transfers. +# 32 bit transfers. Bit 14 (0x4000) enables a hack to wake +# up powered-down laptop drives. Bit 13 (0x2000) allows +# probing for PCI IDE DMA controllers, such as Intel's PIIX +# south bridges. See the wd.4 man page. # # The flags field for the drives can be specified in the controller # specification with the low 16 bits for drive 0, and the high 16 bits |