static void homecache_finv_page_home(struct page *page, int home)
{
if (!PageHighMem(page) && home == page_home(page))
homecache_finv_page_va(page_address(page), home);
else
homecache_finv_map_page(page, home);
}
static void homecache_finv_page_internal(struct page *page, int force_map)
{
int home = page_home(page);
if (home == PAGE_HOME_UNCACHED)
return;
if (incoherent_home(home)) {
int cpu;
for_each_cpu(cpu, &cpu_cacheable_map)
homecache_finv_map_page(page, cpu);
} else if (force_map) {
/* Force if, e.g., the normal mapping is migrating. */
homecache_finv_map_page(page, home);
} else {
homecache_finv_page_home(page, home);
}
sim_validate_lines_evicted(PFN_PHYS(page_to_pfn(page)), PAGE_SIZE);
}
/* Make the page ready to be read by the core. */
static void __dma_complete_page(struct page *page, unsigned long offset,
size_t size, enum dma_data_direction direction)
{
#ifdef __tilegx__
switch (page_home(page)) {
case PAGE_HOME_HASH:
/* I/O device delivered data the way the cpu wanted it. */
break;
case PAGE_HOME_INCOHERENT:
/* Incoherent anyway, so no need to work hard here. */
break;
case PAGE_HOME_IMMUTABLE:
/* Extra read-only copies are not a problem. */
break;
default:
/* Flush the bogus hash-for-home I/O entries to memory. */
homecache_finv_map_page(page, PAGE_HOME_HASH);
break;
}
#endif
}
