PCI to PCI Bridge initialization fails or is corrupted
Kurt Jaeger
lists at c0mplx.org
Fri Sep 28 11:13:18 PDT 2007
Hi!
> If somebody could point out to me where the prefetch decode
> occurs in the code, this would be a big help.
I assume you have
sys/dev/pci/pci_pci.c, version 1.49
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/dev/pci/pci_pci.c?rev=1.49;content-type=text%2Fplain
In line 183f, sc->pmembase is set:
sc->pmembase = PCI_PPBMEMBASE(pci_read_config(dev, PCIR_PMBASEH_1, 4),
pci_read_config(dev, PCIR_PMBASEL_1, 2));
and if sc->pmembase is set, the function call to pcib_is_prefetch_open()
leads to the result you are looking for in line 267:
if (pcib_is_prefetch_open(sc))
device_printf(dev, " prefetched decode 0x%jx-0x%jx\n",
(uintmax_t)sc->pmembase, (uintmax_t)sc->pmemlimit);
But why the pci_read_config() returns something different, I do not know.
--
pi at c0mplx.org +49 171 3101372 13 years to go !
More information about the freebsd-current
mailing list