Module Name: src
Committed By: riastradh
Date: Mon Aug 27 15:29:19 UTC 2018
Modified Files:
src/sys/external/bsd/drm2/drm: drm_cache.c
Log Message:
Draft sparc cache flushing.
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/sys/external/bsd/drm2/drm/drm_cache.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/drm/drm_cache.c
diff -u src/sys/external/bsd/drm2/drm/drm_cache.c:1.11 src/sys/external/bsd/drm2/drm/drm_cache.c:1.12
--- src/sys/external/bsd/drm2/drm/drm_cache.c:1.11 Mon Aug 27 15:24:27 2018
+++ src/sys/external/bsd/drm2/drm/drm_cache.c Mon Aug 27 15:29:19 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: drm_cache.c,v 1.11 2018/08/27 15:24:27 riastradh Exp $ */
+/* $NetBSD: drm_cache.c,v 1.12 2018/08/27 15:29:19 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: drm_cache.c,v 1.11 2018/08/27 15:24:27 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: drm_cache.c,v 1.12 2018/08/27 15:29:19 riastradh Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -174,6 +174,65 @@ drm_md_clflush_virt_range(const void *pt
asm volatile ("clflush %0" : : "m" (*(const char *)va));
}
+#elif defined(__sparc__) || defined(__sparc64__)
+
+#ifdef __sparc64__
+#include <sparc64/sparc64/cache.h>
+#else
+#include <sparc/sparc/cache.h>
+#endif
+
+static bool
+drm_md_clflush_finegrained_p(void)
+{
+ return true;
+}
+
+static void
+drm_md_clflush_all(void)
+{
+ panic("don't know how to flush entire cache on sparc64");
+}
+
+static void
+drm_md_clflush_begin(void)
+{
+ membar_Sync(); /* unsure if needed */
+}
+
+static void
+drm_md_clflush_commit(void)
+{
+ membar_Sync(); /* unsure if needed */
+}
+
+static void
+drm_md_clflush_page(struct page *page)
+{
+#ifdef __sparc64__
+ paddr_t pa = VM_PAGE_TO_PHYS(&page->p_vmp);
+
+ cache_flush_phys(pa, PAGE_SIZE, 0);
+#else
+ void *const vaddr = kmap_atomic(page);
+
+ cache_flush(vaddr, PAGE_SIZE);
+
+ kunmap_atomic(vaddr);
+#endif
+}
+
+static void
+drm_md_clflush_virt_range(const void *ptr, size_t nbytes)
+{
+#ifdef __sparc64__
+ /* XXX Mega-kludge -- doesn't seem to be a way to flush by vaddr. */
+ blast_dcache();
+#else
+ cache_flush(ptr, nbytes);
+#endif
+}
+
#elif defined(__powerpc__)
static bool
