xref: /openbmc/qemu/include/sysemu/xen-mapcache.h (revision 05caa062)
1 /*
2  * Copyright (C) 2011       Citrix Ltd.
3  *
4  * This work is licensed under the terms of the GNU GPL, version 2.  See
5  * the COPYING file in the top-level directory.
6  *
7  */
8 
9 #ifndef XEN_MAPCACHE_H
10 #define XEN_MAPCACHE_H
11 
12 #include "exec/cpu-common.h"
13 #include "sysemu/xen.h"
14 
15 typedef hwaddr (*phys_offset_to_gaddr_t)(hwaddr phys_offset,
16                                          ram_addr_t size);
17 #ifdef CONFIG_XEN_IS_POSSIBLE
18 
19 void xen_map_cache_init(phys_offset_to_gaddr_t f,
20                         void *opaque);
21 uint8_t *xen_map_cache(MemoryRegion *mr, hwaddr phys_addr, hwaddr size,
22                        ram_addr_t ram_addr_offset,
23                        uint8_t lock, bool dma,
24                        bool is_write);
25 ram_addr_t xen_ram_addr_from_mapcache(void *ptr);
26 void xen_invalidate_map_cache_entry(uint8_t *buffer);
27 void xen_invalidate_map_cache(void);
28 uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
29                                  hwaddr new_phys_addr,
30                                  hwaddr size);
31 #else
32 
33 static inline void xen_map_cache_init(phys_offset_to_gaddr_t f,
34                                       void *opaque)
35 {
36 }
37 
38 static inline uint8_t *xen_map_cache(MemoryRegion *mr,
39                                      hwaddr phys_addr,
40                                      hwaddr size,
41                                      ram_addr_t ram_addr_offset,
42                                      uint8_t lock,
43                                      bool dma,
44                                      bool is_write)
45 {
46     abort();
47 }
48 
49 static inline ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
50 {
51     abort();
52 }
53 
54 static inline void xen_invalidate_map_cache_entry(uint8_t *buffer)
55 {
56 }
57 
58 static inline void xen_invalidate_map_cache(void)
59 {
60 }
61 
62 static inline uint8_t *xen_replace_cache_entry(hwaddr old_phys_addr,
63                                                hwaddr new_phys_addr,
64                                                hwaddr size)
65 {
66     abort();
67 }
68 
69 #endif
70 
71 #endif /* XEN_MAPCACHE_H */
72