Author: marcel
Date: Tue Jul 23 03:03:17 2013
New Revision: 253560
URL: http://svnweb.freebsd.org/changeset/base/253560
Log:
In pci_cfgregread() and pci_cfgregwrite(), multiplex the domain and
bus number into the bus argument. The bus number occupies the least
significant 8 bits. The PCI domain occupies the most significant 24
bits.
On the Altix 350, the PCI domain is a required parameter, but
changing the prototype of the pci_cfgreg*() functions to include a
separate domain argument has wide-spread consequences across the
supported architectures. We'd be changing a known interface.
Multiplexing is an acceptable kluge to give us what we need with
manageable impact. Note that the PCI bus number fits in 8 bits,
so the multiplexing of the domain is a backward compatible change.
Modified:
head/sys/ia64/pci/pci_cfgreg.c
Modified: head/sys/ia64/pci/pci_cfgreg.c
==============================================================================
--- head/sys/ia64/pci/pci_cfgreg.c Tue Jul 23 02:38:23 2013
(r253559)
+++ head/sys/ia64/pci/pci_cfgreg.c Tue Jul 23 03:03:17 2013
(r253560)
@@ -70,7 +70,7 @@ pci_cfgregread(int bus, int slot, int fu
register_t is;
u_long addr;
- addr = pci_sal_address(0, bus, slot, func, reg);
+ addr = pci_sal_address(bus >> 8, bus & 0xff, slot, func, reg);
if (addr == ~0ul)
return (~0);
@@ -91,7 +91,7 @@ pci_cfgregwrite(int bus, int slot, int f
register_t is;
u_long addr;
- addr = pci_sal_address(0, bus, slot, func, reg);
+ addr = pci_sal_address(bus >> 8, bus & 0xff, slot, func, reg);
if (addr == ~0ul)
return;
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
