TODO revision 1.44
1 /* $NetBSD: TODO,v 1.44 2021/07/05 16:59:54 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 (primary ldom is Solaris 11.4 SRU30):: 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 installation method. 21 The %i,%l and %o registers are corrupted, after a call to the libcurses 22 wrefresh() function. 23 If the sysinst insallation source is local directory, the sets are properly 24 unpacked, but the system hangs afterwards when running the makedev script. 25 T2000 ldom with 8 VCPU and 4GB: 26 - crashes in /sbin/init doing an access() call where %o0 is corrupted (zero) 27 S7 ldom with 8 VCPU and 16GB (primary ldom is Solaris 11.4 SRU33): 28 - same status as T5 ldom 29 - 64-bit kernel support 30 - 32-bit kernel support 31 - libkvm 32 - ofwboot: tlb_init_sun4v() hardcodes number of slots to 64 33 - locore.s: sun4v_datatrap missing implementation for trap level 1 34 - check build without SUN4V defined 35 - replace relevant references to %ver with GET_MAXCWP 36 - pmap_mp_init(): sun4v missing handling 37 - replace constructs like "wrpr %g0, PSTATE_KERN, %pstate" with NORMAL_GLOBALS 38 - replace constructs line "wrpr %g0, PSTATE_INTR, %pstate" with ALTERNATE_GOBALS 39 - sun4v tsb no need to lock... per cpu... anyway... 40 - ci_tsb_desc->td_ctxidx: -1 or 1? 41 - MP support - currently bypassed in pmap_bootstrap() for sun4v 42 - vpci.c/vpcivar.h: cleanup FIXMEs 43 - interrupts not handled properly (com at ebus only...) 44 - mpt(4) complains: mpt0: Phy 0: Link Status Unknown 45 - man pages for drivers imported from OpenBSD lke vpci, vbus, cbus, vdsk, ldc etc. 46 - vdsk and ldc drivers: code maked with OPENBSD_BUSDMA - make the bus_dma stuff work properly 47 - vbus.c: handle prom_getprop() memory leaks 48 - locore.s: rft_user (sun4v specific manaul fill) - seems to work, but is it good enough (compared to openbsds rft_user? 49 - openfirmware interface 50 bounce handlng could need rework 51 - only #if __arch64__ independent for SUN4V, as OF for all ultrasparcs is 52 plain 32bit code too (and this #if only because the point below becomes 53 always false otherwise) 54 - only bounce if the address is >= 1UL<<32 55 - perhaps apply the lock to OF calls in general, not only the bounce'd ones 56 (in other words: let's protect the OF context with the lock, not 57 only the bounce buffer contents). 58 - Are there any other bounce-worthy OF calls? If so, apply handling 59 to all of them now 60 - consider method used by Solaris/OpenSolaris/Illumos (look for PROM_32BIT_ADDRS in 61 the Illumos codebase) 62 - platforms tested so far: 63 -- qemu sun4v/niagara - reaches the point where the kernel needs to mount a root fs 64 -- T2000 - mmu fault somewhere 65 -- T5 - stickcmpr is not properly initialized ??? 66
Indexes created Tue Sep 30 17:09:57 GMT 2025