usb-bsd: convert to QOM
[qemu.git] / cache-utils.h
1 #ifndef QEMU_CACHE_UTILS_H
2 #define QEMU_CACHE_UTILS_H
3
4 #if defined(_ARCH_PPC)
5 struct qemu_cache_conf {
6 unsigned long dcache_bsize;
7 unsigned long icache_bsize;
8 };
9
10 extern struct qemu_cache_conf qemu_cache_conf;
11
12 void qemu_cache_utils_init(char **envp);
13
14 /* mildly adjusted code from tcg-dyngen.c */
15 static inline void flush_icache_range(unsigned long start, unsigned long stop)
16 {
17 unsigned long p, start1, stop1;
18 unsigned long dsize = qemu_cache_conf.dcache_bsize;
19 unsigned long isize = qemu_cache_conf.icache_bsize;
20
21 start1 = start & ~(dsize - 1);
22 stop1 = (stop + dsize - 1) & ~(dsize - 1);
23 for (p = start1; p < stop1; p += dsize) {
24 asm volatile ("dcbst 0,%0" : : "r"(p) : "memory");
25 }
26 asm volatile ("sync" : : : "memory");
27
28 start &= start & ~(isize - 1);
29 stop1 = (stop + isize - 1) & ~(isize - 1);
30 for (p = start1; p < stop1; p += isize) {
31 asm volatile ("icbi 0,%0" : : "r"(p) : "memory");
32 }
33 asm volatile ("sync" : : : "memory");
34 asm volatile ("isync" : : : "memory");
35 }
36
37 #else
38 #define qemu_cache_utils_init(envp) do { (void) (envp); } while (0)
39 #endif
40
41 #endif /* QEMU_CACHE_UTILS_H */