Turns out we are pretty close. The only problem is that X still wants
to probe the pci bus. We allow access to /dev/pci0 if
machdep.allowaperture is 0, but libpciaccess uses O_RDWR to open it.
The diff below chages this such that it tries O_RDONLY if O_RDWR fails.
Works fine with inteldrm(4), although Xorg will still print a warning
telling you to set machdep.allowaperture to 1:
[257036.053] (WW) checkDevMem: failed to open /dev/xf86 and /dev/mem
(Operation not permitted)
Check that you have set 'machdep.allowaperture=1'
in /etc/sysctl.conf and reboot your machine
refer to xf86(4) for details
Haven't tried radeondrm(4) yet.
ok?
Index: openbsd_pci.c
===================================================================
RCS file: /cvs/xenocara/lib/libpciaccess/src/openbsd_pci.c,v
retrieving revision 1.18
diff -u -p -r1.18 openbsd_pci.c
--- openbsd_pci.c 13 Aug 2013 17:24:03 -0000 1.18
+++ openbsd_pci.c 13 Feb 2014 21:42:08 -0000
@@ -599,8 +599,11 @@ pci_system_openbsd_create(void)
for (domain = 0; domain < sizeof(pcifd) / sizeof(pcifd[0]); domain++) {
snprintf(path, sizeof(path), "/dev/pci%d", domain);
pcifd[domain] = open(path, O_RDWR | O_CLOEXEC);
- if (pcifd[domain] == -1)
- break;
+ if (pcifd[domain] == -1) {
+ pcifd[domain] = open(path, O_RDONLY | O_CLOEXEC);
+ if (pcifd[domain] == -1)
+ break;
+ }
ndomains++;
}
