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Message-ID: <20080313040233.GL12370@sgi.com>
Date: Wed, 12 Mar 2008 21:02:33 -0700
From: akepner@....com
To: Tony Luck <tony.luck@...el.com>,
Jesse Barnes <jbarnes@...tuousgeek.org>,
Jes Sorensen <jes@....com>,
Randy Dunlap <randy.dunlap@...cle.com>,
Roland Dreier <rdreier@...co.com>,
James Bottomley <James.Bottomley@...senPartnership.com>,
David Miller <davem@...emloft.net>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Grant Grundler <grundler@...isc-linux.org>,
Michael Ellerman <michael@...erman.id.au>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 2/4 v4] swiotlb: introduce swiotlb_*_attrs() functions
Introduce swiotlb_{map|unmap}_{single|sg}_attrs() functions
in anticipation of using them when redefining the ia64 machvecs.
Signed-off-by: Arthur Kepner <akepner@....com>
Acked-by: Jesse Barnes <jesse.barnes@...el.com>
---
swiotlb.c | 50 ++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 42 insertions(+), 8 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 4bb5a11..5776897 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -564,7 +564,8 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
* either swiotlb_unmap_single or swiotlb_dma_sync_single is performed.
*/
dma_addr_t
-swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
+swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
+ int dir, struct dma_attrs *attrs)
{
dma_addr_t dev_addr = virt_to_bus(ptr);
void *map;
@@ -597,6 +598,13 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
return dev_addr;
}
+EXPORT_SYMBOL(swiotlb_map_single_attrs);
+
+dma_addr_t
+swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
+{
+ return swiotlb_map_single_attrs(hwdev, ptr, size, dir, NULL);
+}
/*
* Unmap a single streaming mode DMA translation. The dma_addr and size must
@@ -607,8 +615,8 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
* whatever the device wrote there.
*/
void
-swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
- int dir)
+swiotlb_unmap_single_attrs(struct device *hwdev, dma_addr_t dev_addr,
+ size_t size, int dir, struct dma_attrs *attrs)
{
char *dma_addr = bus_to_virt(dev_addr);
@@ -618,7 +626,14 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
else if (dir == DMA_FROM_DEVICE)
dma_mark_clean(dma_addr, size);
}
+EXPORT_SYMBOL(swiotlb_unmap_single_attrs);
+void
+swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
+ int dir)
+{
+ return swiotlb_unmap_single_attrs(hwdev, dev_addr, size, dir, NULL);
+}
/*
* Make physical memory consistent for a single streaming mode DMA translation
* after a transfer.
@@ -689,6 +704,8 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
SYNC_FOR_DEVICE);
}
+void swiotlb_unmap_sg_attrs(struct device *, struct scatterlist *, int, int,
+ struct dma_attrs *);
/*
* Map a set of buffers described by scatterlist in streaming mode for DMA.
* This is the scatter-gather version of the above swiotlb_map_single
@@ -706,8 +723,8 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
* same here.
*/
int
-swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
- int dir)
+swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
+ int dir, struct dma_attrs *attrs)
{
struct scatterlist *sg;
void *addr;
@@ -725,7 +742,8 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
/* Don't panic here, we expect map_sg users
to do proper error handling. */
swiotlb_full(hwdev, sg->length, dir, 0);
- swiotlb_unmap_sg(hwdev, sgl, i, dir);
+ swiotlb_unmap_sg_attrs(hwdev, sgl, i, dir,
+ attrs);
sgl[0].dma_length = 0;
return 0;
}
@@ -736,14 +754,22 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
}
return nelems;
}
+EXPORT_SYMBOL(swiotlb_map_sg_attrs);
+
+int
+swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
+ int dir)
+{
+ return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
+}
/*
* Unmap a set of streaming mode DMA translations. Again, cpu read rules
* concerning calls here are the same as for swiotlb_unmap_single() above.
*/
void
-swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
- int dir)
+swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
+ int nelems, int dir, struct dma_attrs *attrs)
{
struct scatterlist *sg;
int i;
@@ -758,6 +784,14 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length);
}
}
+EXPORT_SYMBOL(swiotlb_unmap_sg_attrs);
+
+void
+swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
+ int dir)
+{
+ return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
+}
/*
* Make physical memory consistent for a set of streaming mode DMA translations
--
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