pc, pc64: allocate i/o port space for unassigned pci bars, move ioalloc() to port/iomap.c

With some newer UEFI firmware, not all pci bars get
programmed and we have to assign them ourselfs.

This was already done for memory bars. This change
adds the same for i/o port space, by providing a
ioreservewin() function which can be used to allocate
port space within the parent pci-pci bridge window.

Also, the pci code now allocates the pci config
space i/o ports 0xCF8/0xCFC so userspace needs to
use devpnp to access pci config space now. (see
latest realemu change).

Also, this moves the ioalloc()/iofree() code out
of devarch into port/iomap.c as it can be shared
with the ppc mtx kernel.

1 files changed, 0 insertions, 4 deletions

diff --git a/sys/src/9/pc64/fns.h b/sys/src/9/pc64/fns.h
index 39afc4864..b3408badb 100644
--- a/sys/src/9/pc64/fns.h
+++ b/sys/src/9/pc64/fns.h
@@ -83,11 +83,7 @@ void	intrenable(int, void (*)(Ureg*, void*), void*, int, char*);
 void	introff(void);
 void	intron(void);
 void	invlpg(uintptr);
-void	iofree(int);
 void	ioinit(void);
-int	iounused(int, int);
-int	ioalloc(int, int, int, char*);
-int	ioreserve(int, int, int, char*);
 int	iprint(char*, ...);
 int	isaconfig(char*, int, ISAConf*);
 void*	kaddr(uintptr);