Re: About support for rtVAX300

[Holm Tiffe <holm%freibergnet.de@localhost>]

[..]

We made some progress guys :-)

That is the current stand of things:

Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
    2006, 2007, 2008, 2009, 2010, 2011, 2012
    The NetBSD Foundation, Inc.  All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
    The Regents of the University of California.  All rights reserved.

NetBSD 6.0 (RTVAX300-test) #179: Sun Jan 13 18:21:03 CET 2013

holm%beast.freibergnet.de@localhost:/home/holm/tmp/netbsd/root6/usr/src/sys/arch/vax/compile/RTVAX
Embedded VAX rtVAX 300
total memory = 16380 KB
avail memory = 13068 KB
mainbus0 (root)
cpu0 at mainbus0: RTVAX300, CVAX microcode rev 6 Firmware rev 17
ze at mainbus0 not configured
lance at mainbus0 not configured
uba at mainbus0 not configured
boot device: <unknown>
root device: 
... here it sits and waits, should provice a getchar() maybe..

I've removed the entire rtvbus from the configuration so the devices should
be attached to the mainbus0 now.
In the case of the ze0 it seems I can only reach this, when I hack the
"ze" in to the following line in ka650.c:

static const char * const ka650_devs[] = { "cpu", "ze", "lance", "uba", NULL };
This is why lance and uba are displayed here too (no problem).

There are now some questions again:

I know from the Hardware manual that the SCN2681 should interrupt at IPL14
and the SGEC at IPL15.

in scn.c I have to establish the interrupt for that chip somewhere,
the original MIPS software has done this:

cpu_intr_establish(duartno, IPL_TTY, scnintr, duart);

I had, while using that rtvbus this:

rtv_intr_establish(&duartno, IPL_TTY, (void *)scnintr, duart, NULL);

..which compiles flawlessly, but no I couldn't find where that IPL_TTY is
defined? It may false...

Now I have looked at that dz_vsbus.c and there this looks like this:

scb_vecalloc(va->va_cvec, dzxint, sc, SCB_ISTACK, &sc->sc_tintrcnt);
scb_vecalloc(va->va_cvec - 4, dzrint, sc, SCB_ISTACK, &sc->sc_rintrcnt);

therefore I'm trying to use this:

scb_vecalloc(IPL_TTY, (void (*)(void *)) scnintr, sc, SCB_ISTACK, 
&sc->sc_intrcnt);


Is this correct so far? That IPL_TTY for sure not, what is the correct
value for this? ( I'm crossbuilding on FreeBSD, have no netbsd manuals on
that system, maybe I can find what this functions want in the source or on
the web, but ...)

The next thing is, that the ze0 soesn't get attached, there are the values
looking like this:

#define SGECADDR        0x20008000
#define NISA_ROM        0x20084000
#define NISA_ROM_VXT    0x200c4000
#define NISA_ROM_VSBUS  0x27800000
#define NISA_ROM_RTVAX  0x20010000
#define SGECVEC         0x108

static int      ze_mainbus_match(device_t, cfdata_t, void *);
static void     ze_mainbus_attach(device_t, device_t, void *);

static const struct sgec_data {
        uint32_t sd_boardtype;
        bus_addr_t sd_addr;
        bus_addr_t sd_rom;
        uint16_t sd_intvec;
        uint8_t sd_romshift;
} sgec_data[] = {
        { VAX_BTYP_660, SGECADDR, NISA_ROM, SGECVEC, 24, },
#if VXT2000 || VAXANY
        { VAX_BTYP_VXT, SGECADDR, NISA_ROM_VXT, 0x200, 0, },
#endif
#if RTVAX || VAXANY
        { VAX_BTYP_RTVAX300, SGECADDR, NISA_ROM_RTVAX, 0x108, 24, },
#endif
        { VAX_BTYP_670, SGECADDR, NISA_ROM, SGECVEC, 8, },
        { VAX_BTYP_680, SGECADDR, NISA_ROM, SGECVEC, 8, },
        { VAX_BTYP_681, SGECADDR, NISA_ROM, SGECVEC, 8, },
        { VAX_BTYP_48, SGECADDR, NISA_ROM_VSBUS, SGECVEC, 0, },
        { VAX_BTYP_49, SGECADDR, NISA_ROM_VSBUS, SGECVEC, 0, },
        { VAX_BTYP_53, SGECADDR, NISA_ROM, SGECVEC, 8, },

.. I've corrected that NISA_ROM and the Address for the SGEC is ok.
SGECVEC is defined in this file as 0x108, tried that 0x200 from the VS2000
also..but this where a strange coincidence if it qould fit.

What are the correct values for the both int vecs?
(..and whow they are calculated?)

Regards,

Holm
-- 
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