diff options
| author | se <se@FreeBSD.org> | 1995-02-14 22:48:01 +0000 |
|---|---|---|
| committer | se <se@FreeBSD.org> | 1995-02-14 22:48:01 +0000 |
| commit | 0044192fdf92b0b40aa3c4f34cb2078b1d6a4747 (patch) | |
| tree | 0db0028554fe54d5663b9fecd887020238312457 | |
| parent | 0d9e46cf174fbbc3009966da7302ab01b406987e (diff) | |
| download | FreeBSD-src-0044192fdf92b0b40aa3c4f34cb2078b1d6a4747.zip FreeBSD-src-0044192fdf92b0b40aa3c4f34cb2078b1d6a4747.tar.gz | |
Verify that NCR was mapped to uncached address.
Submitted by: wolf@kintaro.cologne.de <Wolfgang Stanglmeier>
| -rw-r--r-- | sys/pci/ncr.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/sys/pci/ncr.c b/sys/pci/ncr.c index ff85939..d4b0b75 100644 --- a/sys/pci/ncr.c +++ b/sys/pci/ncr.c @@ -1,6 +1,6 @@ /************************************************************************** ** -** $Id: ncr.c,v 1.20 1995/02/10 13:24:52 se Exp $ +** $Id: ncr.c,v 1.21 1995/02/14 06:20:03 phk Exp $ ** ** Device driver for the NCR 53C810 PCI-SCSI-Controller. ** @@ -44,7 +44,7 @@ *************************************************************************** */ -#define NCR_PATCHLEVEL "pl11 95/02/09" +#define NCR_PATCHLEVEL "pl12 95/02/09" #define NCR_VERSION (2) #define MAX_UNITS (16) @@ -1228,7 +1228,7 @@ static void ncr_attach (pcici_t tag, int unit); static char ident[] = - "\n$Id: ncr.c,v 1.20 1995/02/10 13:24:52 se Exp $\n"; + "\n$Id: ncr.c,v 1.21 1995/02/14 06:20:03 phk Exp $\n"; u_long ncr_version = NCR_VERSION + (u_long) sizeof (struct ncb) @@ -6396,9 +6396,39 @@ static int ncr_scatter **========================================================== */ +static int ncr_regtest (struct ncb* np) +{ + register volatile u_long data, *addr; +#ifndef NCR_IOMAPPED + /* + ** ncr registers may NOT be cached. + ** write 0xffffffff to a read only register area, + ** and try to read it back. + */ + addr = (u_long*) &np->reg->nc_dstat; + data = 0xffffffff; + *addr= data; + data = *addr; +#if 1 + if (data == 0xffffffff) { +#else + if ((data & 0xe2f0fffd) != 0x02000080) { +#endif + printf ("CACHE TEST FAILED: reg dstat-sstat2 readback %x.\n", + (unsigned) data); + return (0x10); + }; + return (0); +#endif +} + static int ncr_snooptest (struct ncb* np) { u_long ncr_rd, ncr_wr, ncr_bk, host_rd, host_wr, pc, err=0; +#ifndef NCR_IOMAPPED + err |= ncr_regtest (np); + if (err) return (err); +#endif /* ** init */ |
