TODO revision 1.42
1 /* $NetBSD: TODO,v 1.42 2021/06/13 17:02:14 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 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, an error in the 24 ldsk device driver is triggered when a DATA/NACK/DRING_DATA event is received. 25 The current implementation does not hande this exception properly. 26 T2000 ldom with 8 VCPU and 4GB: 27 - crashes in /sbin/init doing an access() call where %o0 is corrupted (zero) 28 S7 ldom with 8 VCPU and 16GB (primary ldom is Solaris 11.4 SRU30): 29 - during autoconfiguration of vnet devices the call to hv_vintr_setenabled() 30 returns error code 7 (EBADTRAP?) 31 - 64-bit kernel support 32 - 32-bit kernel support 33 - libkvm 34 - ofwboot: tlb_init_sun4v() hardcodes number of slots to 64 35 - locore.s: sun4v_datatrap missing implementation for trap level 1 36 - check build without SUN4V defined 37 - replace relevant references to %ver with GET_MAXCWP 38 - pmap_mp_init(): sun4v missing handling 39 - replace constructs like "wrpr %g0, PSTATE_KERN, %pstate" with NORMAL_GLOBALS 40 - replace constructs line "wrpr %g0, PSTATE_INTR, %pstate" with ALTERNATE_GOBALS 41 - sun4v tsb no need to lock... per cpu... anyway... 42 - ci_tsb_desc->td_ctxidx: -1 or 1? 43 - MP support - currently bypassed in pmap_bootstrap() for sun4v 44 - vpci.c/vpcivar.h: cleanup FIXMEs 45 - interrupts not handled properly (com at ebus only...) 46 - mpt(4) complains: mpt0: Phy 0: Link Status Unknown 47 - man pages for drivers imported from OpenBSD lke vpci, vbus, cbus, vdsk, ldc etc. 48 - vdsk and ldc drivers: code maked with OPENBSD_BUSDMA - make the bus_dma stuff work properly 49 - vbus.c: handle prom_getprop() memory leaks 50 - locore.s: rft_user (sun4v specific manaul fill) - seems to work, but is it good enough (compared to openbsds rft_user? 51 - openfirmware interface 52 bounce handlng could need rework 53 - only #if __arch64__ independent for SUN4V, as OF for all ultrasparcs is 54 plain 32bit code too (and this #if only because the point below becomes 55 always false otherwise) 56 - only bounce if the address is >= 1UL<<32 57 - perhaps apply the lock to OF calls in general, not only the bounce'd ones 58 (in other words: let's protect the OF context with the lock, not 59 only the bounce buffer contents). 60 - Are there any other bounce-worthy OF calls? If so, apply handling 61 to all of them now 62 - consider method used by Solaris/OpenSolaris/Illumos (look for PROM_32BIT_ADDRS in 63 the Illumos codebase) 64 - platforms tested so far: 65 -- qemu sun4v/niagara - reaches the point where the kernel needs to mount a root fs 66 -- T2000 - mmu fault somewhere 67 -- T5 - stickcmpr is not properly initialized ??? 68
Indexes created Tue Sep 30 20:09:53 GMT 2025