stubdom: PCI passthrough support via PV-PCI

Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>

extras/mini-os/include/pcifront.h

@@ -0,0 +1,15 @@
+#include <types.h>
+#include <xen/io/pciif.h>
+struct pcifront_dev;
+struct pcifront_dev *init_pcifront(char *nodename);
+void pcifront_scan(struct pcifront_dev *dev, void (*fun)(unsigned int domain, unsigned int bus, unsigned slot, unsigned int fun));
+void pcifront_op(struct pcifront_dev *dev, struct xen_pci_op *op);
+void shutdown_pcifront(struct pcifront_dev *dev);
+int pcifront_conf_read(struct pcifront_dev *dev,
+                       unsigned int dom,
+                       unsigned int bus, unsigned int slot, unsigned long fun,
+                       unsigned int off, unsigned int size, unsigned int *val);
+int pcifront_conf_write(struct pcifront_dev *dev,
+                        unsigned int dom,
+                        unsigned int bus, unsigned int slot, unsigned long fun,
+                        unsigned int off, unsigned int size, unsigned int val);

extras/mini-os/include/posix/sys/mman.h

@@ -9,6 +9,9 @@
 #define MAP_PRIVATE	0x02
 #define MAP_ANON	0x20
 
+/* Pages are always resident anyway */
+#define MAP_LOCKED	0x0
+
 #define MAP_FAILED	((void*)0)
 
 void *mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset);