Module Name: src
Committed By: jdolecek
Date: Fri Aug 31 19:15:04 UTC 2018
Modified Files:
src/sys/dev/ata [jdolecek-ncqfixes]: TODO.ncq
Log Message:
list goals for the jdolecek-ncqfixes branch
To generate a diff of this commit:
cvs rdiff -u -r1.4 -r1.4.2.1 src/sys/dev/ata/TODO.ncq
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/ata/TODO.ncq
diff -u src/sys/dev/ata/TODO.ncq:1.4 src/sys/dev/ata/TODO.ncq:1.4.2.1
--- src/sys/dev/ata/TODO.ncq:1.4 Fri Aug 31 18:44:04 2018
+++ src/sys/dev/ata/TODO.ncq Fri Aug 31 19:15:04 2018
@@ -1,3 +1,16 @@
+jdolecek-ncqfixes goals:
+- make ata_xfer dynamically allocated per-drive using a pool
+ - fixes: queue is allocated regardless if there are any drives, fix?
+- remove limit of queued ata_xfers, allow any number of pending xfers;
+ this should fix kern/52614 AKA wdc-attached ATAPI cd(4)
+- remove the wd(4) flush condition, just allocate a dynamic ata_xfer
+- change wd(4) dump code to use on-stack ata_xfer to not rely on pool having
+ memory
+- re-fix QEMU ahci(4) bug workaround (no READ LOG EXT support) - now it
+ triggers KASSERT()
+- fix ahci(4) error handling under paralles - invalid bio via WD_CHAOS_MONKEY
+ ends up being handled as NOERROR, triggering KASSERT() in wd(4)
+
Bugs
----
test wd* at umass?, confirm the ata_channel kludge works
@@ -15,8 +28,6 @@ xfers for several different drives
maybe do device error handling in not-interrupt-context (maybe this should be
done on a mpata branch?)
-queue is allocated regardless if there are any drives, fix?
-
dump to unopened disk fails (e.g. dump do wd1b when wd1a not mounted), due
to the open path executing ata_get_params(), which eventually tsleeps()
while waiting for the command to finish; specifically, if WDF_LOADED is not
