[src/jdolecek-ncq]: src/sys/dev/ata bunch of random observations

[jdolecek <jdolecek%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1435bcff1c41
branches:  jdolecek-ncq
changeset: 352631:1435bcff1c41
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Wed Apr 19 20:49:58 2017 +0000

description:
bunch of random observations

diffstat:

 sys/dev/ata/TODO.ncq |  20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diffs (24 lines):

diff -r 5597978d30ba -r 1435bcff1c41 sys/dev/ata/TODO.ncq
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/ata/TODO.ncq      Wed Apr 19 20:49:58 2017 +0000
@@ -0,0 +1,20 @@
+ahci with NCQ gets frequent timeouts, something's amiss
+
+ata_xfer_*() uses wd->drvp->chnl_softc as ata_channel, but it's umass
+softc for wd? at umass*
+
+protect more of wddone() with mutex?
+
+wdminphys() - LBA48 has maximum 65536 sectors
+
+refactor mvsata to reuse (more of) ata_wdc.c?
+
+NCQ ICC - investigate and set/get the behaviour with timeouts
+
+implement DIOCGCACHE/DIOCCACHESYNC for ld@ataraid? just passthrough, like ccd
+
+MSI/MSI-X support for AHCI
+
+fix all 'XXX slot' 
+
+malloc(M_CANFAIL) actually doesn't do anything