svn commit: r289865 - head/sys/arm/arm
Ian Lepore
ian at FreeBSD.org
Sat Oct 24 03:01:48 UTC 2015
Author: ian
Date: Sat Oct 24 03:01:47 2015
New Revision: 289865
URL: https://svnweb.freebsd.org/changeset/base/289865
Log:
A few more whitespace, style, and comment cleanups. No functional changes.
Modified:
head/sys/arm/arm/busdma_machdep-v6.c
Modified: head/sys/arm/arm/busdma_machdep-v6.c
==============================================================================
--- head/sys/arm/arm/busdma_machdep-v6.c Sat Oct 24 02:44:13 2015 (r289864)
+++ head/sys/arm/arm/busdma_machdep-v6.c Sat Oct 24 03:01:47 2015 (r289865)
@@ -1,5 +1,5 @@
/*-
- * Copyright (c) 2012-2014 Ian Lepore
+ * Copyright (c) 2012-2015 Ian Lepore
* Copyright (c) 2010 Mark Tinguely
* Copyright (c) 2004 Olivier Houchard
* Copyright (c) 2002 Peter Grehan
@@ -35,9 +35,6 @@ __FBSDID("$FreeBSD$");
#define _ARM32_BUS_DMA_PRIVATE
#include <sys/param.h>
-#include <sys/kdb.h>
-#include <ddb/ddb.h>
-#include <ddb/db_output.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/bus.h>
@@ -740,6 +737,7 @@ bus_dmamap_create(bus_dma_tag_t dmat, in
int
bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
{
+
if (STAILQ_FIRST(&map->bpages) != NULL || map->sync_count != 0) {
CTR3(KTR_BUSDMA, "%s: tag %p error %d",
__func__, dmat, EBUSY);
@@ -756,14 +754,13 @@ bus_dmamap_destroy(bus_dma_tag_t dmat, b
return (0);
}
-
/*
- * Allocate a piece of memory that can be efficiently mapped into
- * bus device space based on the constraints lited in the dma tag.
- * A dmamap to for use with dmamap_load is also allocated.
+ * Allocate a piece of memory that can be efficiently mapped into bus device
+ * space based on the constraints listed in the dma tag. Returns a pointer to
+ * the allocated memory, and a pointer to an associated bus_dmamap.
*/
int
-bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
+bus_dmamem_alloc(bus_dma_tag_t dmat, void **vaddr, int flags,
bus_dmamap_t *mapp)
{
busdma_bufalloc_t ba;
@@ -829,8 +826,6 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, voi
mflags, 0, dmat->lowaddr, dmat->alignment, dmat->boundary,
memattr);
}
-
-
if (*vaddr == NULL) {
CTR4(KTR_BUSDMA, "%s: tag %p tag flags 0x%x error %d",
__func__, dmat, dmat->flags, ENOMEM);
@@ -850,8 +845,8 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, voi
}
/*
- * Free a piece of memory and it's allociated dmamap, that was allocated
- * via bus_dmamem_alloc. Make the same choice for free/contigfree.
+ * Free a piece of memory that was allocated via bus_dmamem_alloc, along with
+ * its associated map.
*/
void
bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
@@ -1075,7 +1070,7 @@ _bus_dmamap_load_phys(bus_dma_tag_t dmat
sgsize)) {
sgsize = MIN(sgsize, PAGE_SIZE - (curaddr & PAGE_MASK));
curaddr = add_bounce_page(dmat, map, 0, curaddr,
- sgsize);
+ sgsize);
} else {
if (map->sync_count > 0)
sl_end = VM_PAGE_TO_PHYS(sl->pages) +
@@ -1187,7 +1182,7 @@ _bus_dmamap_load_buffer(bus_dma_tag_t dm
if (map->pagesneeded != 0 && must_bounce(dmat, map, curaddr,
sgsize)) {
curaddr = add_bounce_page(dmat, map, kvaddr, curaddr,
- sgsize);
+ sgsize);
} else {
if (map->sync_count > 0) {
sl_pend = VM_PAGE_TO_PHYS(sl->pages) +
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