TODO revision 1.38
1 /* $NetBSD: TODO,v 1.38 2021/03/16 20:11:30 palle Exp $ */ 2 3 Things to be done: 4 5 common: 6 - make %g6 point to curcpu 7 - make %g7 point to curlwp 8 - change run-time checks for cpu type to function pointers 9 10 sun4u: 11 - GENERIC.UP kernel hangs on v445 (missing interrupt?) 12 13 sun4v: 14 - current status 15 T5 ldom with 2 VCPU and 4GB: 16 - kernel boots from miniroot.fs via ldom fisk (vdsk) 17 - ldom virtual network interface (vnet) is working 18 (verified by exiting sysinst and issuing a ping command) 19 - the sysinst tool starts, disk setup is working, 20 but the process crashes when selecting network installtion method 21 (probably due to trashing of user proces 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 - idle handling - call hypervisor trap (openbsd code...??) 25 - 64-bit kernel support 26 - 32-bit kernel support 27 - libkvm 28 - ofwboot: tlb_init_sun4v() hardcodes number of slots to 64 29 - locore.s: sun4v_datatrap missing implementation for trap level 1 30 - check build without SUN4V defined 31 - replace relevant references to %ver with GET_MAXCWP 32 - pmap_mp_init(): sun4v missing handling 33 - replace constructs like "wrpr %g0, PSTATE_KERN, %pstate" with NORMAL_GLOBALS 34 - replace constructs line "wrpr %g0, PSTATE_INTR, %pstate" with ALTERNATE_GOBALS 35 - sun4v tsb no need to lock... per cpu... anyway... 36 - ci_tsb_desc->td_ctxidx: -1 or 1? 37 - MP support - currently bypassed in pmap_bootstrap() for sun4v 38 - vpci.c/vpcivar.h: cleanup FIXMEs 39 - interrupts not handled properly (com at ebus only...) 40 - mpt(4) complains: mpt0: Phy 0: Link Status Unknown 41 - man pages for drivers imported from OpenBSD lke vpci, vbus, cbus, vdsk, ldc etc. 42 - vdsk and ldc drivers: code maked with OPENBSD_BUSDMA - make the bus_dma stuff work properly 43 - vbus.c: handle prom_getprop() memory leaks 44 - locore.s: rft_user (sun4v specific manaul fill) - seems to work, but is it good enough (compared to openbsds rft_user? 45 - openfirmware interface 46 bounce handlng could need rework 47 - only #if __arch64__ independent for SUN4V, as OF for all ultrasparcs is 48 plain 32bit code too (and this #if only because the point below becomes 49 always false otherwise) 50 - only bounce if the address is >= 1UL<<32 51 - perhaps apply the lock to OF calls in general, not only the bounce'd ones 52 (in other words: let's protect the OF context with the lock, not 53 only the bounce buffer contents). 54 - Are there any other bounce-worthy OF calls? If so, apply handling 55 to all of them now 56 - consider method used by Solaris/OpenSolaris/Illumos (look for PROM_32BIT_ADDRS in 57 the Illumos codebase) 58 - platforms tested so far: 59 -- qemu sun4v/niagara - reaches the point where the kernel needs to mount a root fs 60 -- T2000 - mmu fault somewhere 61 -- T5 - stickcmpr is not properly initialized ??? 62
Indexes created Wed Oct 01 19:09:53 GMT 2025