Author: andrew Date: Mon Aug 24 12:01:39 2015 New Revision: 287105 URL: https://svnweb.freebsd.org/changeset/base/287105
Log: Add support for pmap_sync_icache on arm64. Reviewed by: emaste, imp (both earlier version) Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D3438 Modified: head/sys/arm64/arm64/pmap.c Modified: head/sys/arm64/arm64/pmap.c ============================================================================== --- head/sys/arm64/arm64/pmap.c Mon Aug 24 10:55:54 2015 (r287104) +++ head/sys/arm64/arm64/pmap.c Mon Aug 24 12:01:39 2015 (r287105) @@ -3050,10 +3050,32 @@ pmap_activate(struct thread *td) } void -pmap_sync_icache(pmap_t pm, vm_offset_t va, vm_size_t sz) +pmap_sync_icache(pmap_t pmap, vm_offset_t va, vm_size_t sz) { - panic("ARM64TODO: pmap_sync_icache"); + if (va >= VM_MIN_KERNEL_ADDRESS) { + cpu_icache_sync_range(va, sz); + } else { + u_int len, offset; + vm_paddr_t pa; + + /* Find the length of data in this page to flush */ + offset = va & PAGE_MASK; + len = imin(PAGE_SIZE - offset, sz); + + while (sz != 0) { + /* Extract the physical address & find it in the DMAP */ + pa = pmap_extract(pmap, va); + if (pa != 0) + cpu_icache_sync_range(PHYS_TO_DMAP(pa), len); + + /* Move to the next page */ + sz -= len; + va += len; + /* Set the length for the next iteration */ + len = imin(PAGE_SIZE, sz); + } + } } /* _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
