kernel: massive pci code rewrite

The new pci code is moved to port/pci.[hc] and shared by
all ports.

Each port has its own PCI controller implementation,
providing the pcicfgrw*() functions for low level pci
config space access. The locking for pcicfgrw*() is now
done by the caller (only port/pci.c).

Device drivers now need to include "../port/pci.h" in
addition to "io.h".

The new code now checks bridge windows and membars,
while enumerating the bus, giving the pc driver a chance
to re-assign them. This is needed because some UEFI
implementations fail to assign the bars for some devices,
so we need to do it outselfs. (See pcireservemem()).

While working on this, it was discovered that the pci
code assimed the smallest I/O bar size is 16 (pcibarsize()),
which is wrong. I/O bars can be as small as 4 bytes.
Bit 1 in an I/O bar is also reserved and should be masked off,
making the port mask: port = bar & ~3;

1 files changed, 0 insertions, 6 deletions

diff --git a/sys/src/9/ppc/fns.h b/sys/src/9/ppc/fns.h
index 5ae2f8097..0606e3b69 100644
--- a/sys/src/9/ppc/fns.h
+++ b/sys/src/9/ppc/fns.h
@@ -67,12 +67,6 @@ void	mmuinit(void);
 void	mmusweep(void*);
 int	newmmupid(void);
 void	outb(int, int);
-int	pcicfgr16(Pcidev*, int);
-int	pcicfgr32(Pcidev*, int);
-int	pcicfgr8(Pcidev*, int);
-void	pcicfgw16(Pcidev*, int, int);
-void	pcicfgw32(Pcidev*, int, int);
-void	pcicfgw8(Pcidev*, int, int);
 void	procsave(Proc*);
 void	procsetup(Proc*);
 void	procfork(Proc*);