TODO revision 1.35 
1/* $NetBSD: TODO,v 1.35 2021/02/27 18:19:57 palle Exp $ */
2
3Things to be done:
4
5common:
6- make %g6 point to curcpu
7- make %g7 point to curlwp
8- change run-time checks for cpu type to function pointers
9
10sun4u:
11- GENERIC.UP kernel hangs on v445 (missing interrupt?)
12
13sun4v:
14 - current status
15     T5 ldom with 2 VCPU and 4GB:
16       The kernel boots and starts userland when booting miniroot.fs.
17       The sysinst tool starts properly and is functional.
18	   Installation is not possible, since no driver currently exists
19	   for the ldom network interfaces, but openbsd vnet and vsw drivers are
20	   possible to integrate and this work is progressing.
21	   OpenBoot (properly trashed registers).
22	 T2000 ldom with 8 VCPU and 4GB:
23	   On this platform it crashes in /sbin/init doing an access() call where %o0 is corrupted (zero)
24- 64-bit kernel support
25- 32-bit kernel support
26- libkvm
27- ofwboot: tlb_init_sun4v() hardcodes number of slots to 64
28- locore.s: sun4v_datatrap missing implementation for trap level 1
29- check build without SUN4V defined
30- replace relevant references to %ver with GET_MAXCWP
31- pmap_mp_init(): sun4v missing handling
32- replace constructs like "wrpr %g0, PSTATE_KERN, %pstate" with NORMAL_GLOBALS
33- replace constructs line "wrpr %g0, PSTATE_INTR, %pstate" with ALTERNATE_GOBALS
34- sun4v tsb no need to lock... per cpu... anyway...
35- ci_tsb_desc->td_ctxidx: -1 or 1?
36- MP support - currently bypassed in pmap_bootstrap() for sun4v
37- vpci.c/vpcivar.h: cleanup FIXMEs
38- interrupts not handled properly (com at ebus only...)
39- mpt(4) complains: mpt0: Phy 0: Link Status Unknown
40- man pages for drivers imported from OpenBSD lke vpci, vbus, cbus, vdsk, ldc etc.
41- vdsk and ldc drivers: code maked with OPENBSD_BUSDMA - make the bus_dma stuff work properly
42- vbus.c: handle prom_getprop() memory leaks
43- locore.s: rft_user (sun4v specific manaul fill) - seems to work, but is it good enough (compared to openbsds rft_user?
44 - platforms tested so far:
45 -- qemu sun4v/niagara - reaches the point where the kernel needs to mount a root fs
46 -- T2000 - mmu fault somewhere
47 -- T5 - stickcmpr is not properly initialized ???
48