[PATCH 0/20] dma_ops for i386

[PATCH 0/20] dma_ops for i386

[Glauber Costa]

Hello,

Here there is a series of 20 patches that lays the foundations for
using dma_ops in i386 in the very same way x86_64, as well as many other
architectures already do.

The functions themselves for i386 are placed in a pci-base_32.c, but just
a few among them are actually implemented. Most were no-ops anyway.

Also, as I said, this is by no means a complete coverage of dma_ops.
there are still some call sites to be patches in pci-dma_32.c (although I don't
really plan to change them, but to integrate them in a single pci-dma.c).
I intend to have it done progressively.

The granularity is per-operation, meaning each patch moves one specific function
to the common header. This is compiled-tested in both i386 and x86_64 in 
~5 randconfigs each, and boot-tested in my hardware with my default configs

The motivation for that is the ongoing work for pci-passthrough in KVM.
So ingo, avi, what do you think it's the best way to handle these patches through?

Thanks



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[PATCH 01/20] x86: move dma_ops struct definition to dma-mapping.h

[Glauber Costa]

take it off the x86_64 specific header

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping.h    |   54 ++++++++++++++++++++++++++++++++++++++
 include/asm-x86/dma-mapping_64.h |   49 ----------------------------------
 2 files changed, 54 insertions(+), 49 deletions(-)

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 58f790f..aebd178 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -1,5 +1,59 @@
+#ifndef _ASM_DMA_MAPPING_H_
+#define _ASM_DMA_MAPPING_H_
+
+/*
+ * IOMMU interface. See Documentation/DMA-mapping.txt and DMA-API.txt for
+ * documentation.
+ */
+
+#include <linux/scatterlist.h>
+#include <asm/io.h>
+#include <asm/swiotlb.h>
+
+struct dma_mapping_ops {
+	int             (*mapping_error)(dma_addr_t dma_addr);
+	void*           (*alloc_coherent)(struct device *dev, size_t size,
+				dma_addr_t *dma_handle, gfp_t gfp);
+	void            (*free_coherent)(struct device *dev, size_t size,
+				void *vaddr, dma_addr_t dma_handle);
+	dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
+				size_t size, int direction);
+	/* like map_single, but doesn't check the device mask */
+	dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
+				size_t size, int direction);
+	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
+				size_t size, int direction);
+	void            (*sync_single_for_cpu)(struct device *hwdev,
+				dma_addr_t dma_handle, size_t size,
+				int direction);
+	void            (*sync_single_for_device)(struct device *hwdev,
+				dma_addr_t dma_handle, size_t size,
+				int direction);
+	void            (*sync_single_range_for_cpu)(struct device *hwdev,
+				dma_addr_t dma_handle, unsigned long offset,
+				size_t size, int direction);
+	void            (*sync_single_range_for_device)(struct device *hwdev,
+				dma_addr_t dma_handle, unsigned long offset,
+				size_t size, int direction);
+	void            (*sync_sg_for_cpu)(struct device *hwdev,
+				struct scatterlist *sg, int nelems,
+				int direction);
+	void            (*sync_sg_for_device)(struct device *hwdev,
+				struct scatterlist *sg, int nelems,
+				int direction);
+	int             (*map_sg)(struct device *hwdev, struct scatterlist *sg,
+				int nents, int direction);
+	void            (*unmap_sg)(struct device *hwdev,
+				struct scatterlist *sg, int nents,
+				int direction);
+	int             (*dma_supported)(struct device *hwdev, u64 mask);
+	int		is_phys;
+};
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
 # include "dma-mapping_64.h"
 #endif
+
+#endif
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index ecd0f61..369188a 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -1,55 +1,6 @@
 #ifndef _X8664_DMA_MAPPING_H
 #define _X8664_DMA_MAPPING_H 1
 
-/*
- * IOMMU interface. See Documentation/DMA-mapping.txt and DMA-API.txt for
- * documentation.
- */
-
-#include <linux/scatterlist.h>
-#include <asm/io.h>
-#include <asm/swiotlb.h>
-
-struct dma_mapping_ops {
-	int             (*mapping_error)(dma_addr_t dma_addr);
-	void*           (*alloc_coherent)(struct device *dev, size_t size,
-                                dma_addr_t *dma_handle, gfp_t gfp);
-	void            (*free_coherent)(struct device *dev, size_t size,
-                                void *vaddr, dma_addr_t dma_handle);
-	dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
-                                size_t size, int direction);
-	/* like map_single, but doesn't check the device mask */
-	dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
-                                size_t size, int direction);
-	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
-		                size_t size, int direction);
-	void            (*sync_single_for_cpu)(struct device *hwdev,
-		                dma_addr_t dma_handle, size_t size,
-				int direction);
-	void            (*sync_single_for_device)(struct device *hwdev,
-                                dma_addr_t dma_handle, size_t size,
-				int direction);
-	void            (*sync_single_range_for_cpu)(struct device *hwdev,
-                                dma_addr_t dma_handle, unsigned long offset,
-		                size_t size, int direction);
-	void            (*sync_single_range_for_device)(struct device *hwdev,
-				dma_addr_t dma_handle, unsigned long offset,
-		                size_t size, int direction);
-	void            (*sync_sg_for_cpu)(struct device *hwdev,
-                                struct scatterlist *sg, int nelems,
-				int direction);
-	void            (*sync_sg_for_device)(struct device *hwdev,
-				struct scatterlist *sg, int nelems,
-				int direction);
-	int             (*map_sg)(struct device *hwdev, struct scatterlist *sg,
-		                int nents, int direction);
-	void            (*unmap_sg)(struct device *hwdev,
-				struct scatterlist *sg, int nents,
-				int direction);
-	int             (*dma_supported)(struct device *hwdev, u64 mask);
-	int		is_phys;
-};
-
 extern dma_addr_t bad_dma_address;
 extern const struct dma_mapping_ops* dma_ops;
 extern int iommu_merge;
-- 
1.5.0.6


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[PATCH 02/20] x86: implement dma_map_single through dma_ops

[Glauber Costa]

That's already the name of the game for x86_64. For i386,
we add a pci-base_32.c, that will hold the default operations.
The function call itself goes through dma-mapping.h , the common
header

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/Makefile         |    1 +
 arch/x86/kernel/pci-base_32.c    |   20 ++++++++++++++++++++
 include/asm-x86/dma-mapping.h    |   10 ++++++++++
 include/asm-x86/dma-mapping_32.h |   10 ----------
 include/asm-x86/dma-mapping_64.h |    9 ---------
 5 files changed, 31 insertions(+), 19 deletions(-)
 create mode 100644 arch/x86/kernel/pci-base_32.c

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 340221f..95fbf57 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -27,6 +27,7 @@ obj-y			+= pci-dma_$(BITS).o  bootflag.o e820_$(BITS).o
 obj-y			+= quirks.o i8237.o topology.o kdebugfs.o
 obj-y			+= alternative.o i8253.o
 obj-$(CONFIG_X86_64)	+= pci-nommu_64.o bugs_64.o
+obj-$(CONFIG_X86_32)	+= pci-base_32.o
 obj-y			+= tsc_$(BITS).o io_delay.o rtc.o
 
 obj-y				+= process.o
diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
new file mode 100644
index 0000000..b613d73
--- /dev/null
+++ b/arch/x86/kernel/pci-base_32.c
@@ -0,0 +1,20 @@
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <asm/dma-mapping.h>
+
+static dma_addr_t pci32_map_single(struct device *dev, void *ptr,
+				   size_t size, int direction)
+{
+	WARN_ON(size == 0);
+	flush_write_buffers();
+	return virt_to_phys(ptr);
+}
+
+static const struct dma_mapping_ops pci32_dma_ops = {
+	.map_single = pci32_map_single,
+};
+
+const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
+EXPORT_SYMBOL(dma_ops);
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index aebd178..d320244 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -50,10 +50,20 @@ struct dma_mapping_ops {
 	int		is_phys;
 };
 
+extern const struct dma_mapping_ops *dma_ops;
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
 # include "dma-mapping_64.h"
 #endif
 
+static inline dma_addr_t
+dma_map_single(struct device *hwdev, void *ptr, size_t size,
+	       int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	return dma_ops->map_single(hwdev, ptr, size, direction);
+}
+
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index 55f01bd..b496306 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -17,16 +17,6 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 void dma_free_coherent(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle);
 
-static inline dma_addr_t
-dma_map_single(struct device *dev, void *ptr, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	WARN_ON(size == 0);
-	flush_write_buffers();
-	return virt_to_phys(ptr);
-}
-
 static inline void
 dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
 		 enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 369188a..969a7da 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -2,7 +2,6 @@
 #define _X8664_DMA_MAPPING_H 1
 
 extern dma_addr_t bad_dma_address;
-extern const struct dma_mapping_ops* dma_ops;
 extern int iommu_merge;
 
 static inline int dma_mapping_error(dma_addr_t dma_addr)
@@ -24,14 +23,6 @@ extern void *dma_alloc_coherent(struct device *dev, size_t size,
 extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 			      dma_addr_t dma_handle);
 
-static inline dma_addr_t
-dma_map_single(struct device *hwdev, void *ptr, size_t size,
-	       int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	return dma_ops->map_single(hwdev, ptr, size, direction);
-}
-
 static inline void
 dma_unmap_single(struct device *dev, dma_addr_t addr,size_t size,
 		 int direction)
-- 
1.5.0.6


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[PATCH 03/20] x86: move dma_unmap_single to common header

[Glauber Costa]

i386 base does not need it, so it gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |   10 ++++++++++
 include/asm-x86/dma-mapping_32.h |    7 -------
 include/asm-x86/dma-mapping_64.h |    8 --------
 4 files changed, 11 insertions(+), 15 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index b613d73..a8a7c7f 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -14,6 +14,7 @@ static dma_addr_t pci32_map_single(struct device *dev, void *ptr,
 
 static const struct dma_mapping_ops pci32_dma_ops = {
 	.map_single = pci32_map_single,
+	.unmap_single = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index d320244..bb0378f 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -66,4 +66,14 @@ dma_map_single(struct device *hwdev, void *ptr, size_t size,
 	return dma_ops->map_single(hwdev, ptr, size, direction);
 }
 
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
+		 int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->unmap_single)
+		dma_ops->unmap_single(dev, addr, size, direction);
+}
+
+
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index b496306..0b27cb0 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -17,13 +17,6 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 void dma_free_coherent(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle);
 
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-		 enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-}
-
 static inline int
 dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
 	   enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 969a7da..5d349db 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -23,14 +23,6 @@ extern void *dma_alloc_coherent(struct device *dev, size_t size,
 extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 			      dma_addr_t dma_handle);
 
-static inline void
-dma_unmap_single(struct device *dev, dma_addr_t addr,size_t size,
-		 int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	dma_ops->unmap_single(dev, addr, size, direction);
-}
-
 #define dma_map_page(dev,page,offset,size,dir) \
 	dma_map_single((dev), page_address(page)+(offset), (size), (dir))
 
-- 
1.5.0.6


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[PATCH 04/20] x86: move dma_map_sg to common header

[Glauber Costa]

the old i386 implementation is moved to pci-base_32.c

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |   19 +++++++++++++++++++
 include/asm-x86/dma-mapping.h    |    8 +++++++-
 include/asm-x86/dma-mapping_32.h |   20 --------------------
 include/asm-x86/dma-mapping_64.h |    7 -------
 4 files changed, 26 insertions(+), 28 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index a8a7c7f..2474152 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -12,9 +12,28 @@ static dma_addr_t pci32_map_single(struct device *dev, void *ptr,
 	return virt_to_phys(ptr);
 }
 
+static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
+			    int nents, int direction)
+{
+	struct scatterlist *sg;
+	int i;
+
+	WARN_ON(nents == 0 || sglist[0].length == 0);
+
+	for_each_sg(sglist, sg, nents, i) {
+		BUG_ON(!sg_page(sg));
+
+		sg->dma_address = sg_phys(sg);
+	}
+
+	flush_write_buffers();
+	return nents;
+}
+
 static const struct dma_mapping_ops pci32_dma_ops = {
 	.map_single = pci32_map_single,
 	.unmap_single = NULL,
+	.map_sg = pci32_dma_map_sg,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index bb0378f..0901154 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -75,5 +75,11 @@ dma_unmap_single(struct device *dev, dma_addr_t addr, size_t size,
 		dma_ops->unmap_single(dev, addr, size, direction);
 }
 
-
+static inline int
+dma_map_sg(struct device *hwdev, struct scatterlist *sg,
+	   int nents, int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	return dma_ops->map_sg(hwdev, sg, nents, direction);
+}
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index 0b27cb0..cdcdeff 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -17,26 +17,6 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
 void dma_free_coherent(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle);
 
-static inline int
-dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
-	   enum dma_data_direction direction)
-{
-	struct scatterlist *sg;
-	int i;
-
-	BUG_ON(!valid_dma_direction(direction));
-	WARN_ON(nents == 0 || sglist[0].length == 0);
-
-	for_each_sg(sglist, sg, nents, i) {
-		BUG_ON(!sg_page(sg));
-
-		sg->dma_address = sg_phys(sg);
-	}
-
-	flush_write_buffers();
-	return nents;
-}
-
 static inline dma_addr_t
 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
 	     size_t size, enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 5d349db..b27527a 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -96,13 +96,6 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 	flush_write_buffers();
 }
 
-static inline int
-dma_map_sg(struct device *hwdev, struct scatterlist *sg, int nents, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	return dma_ops->map_sg(hwdev, sg, nents, direction);
-}
-
 static inline void
 dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
 	     int direction)
-- 
1.5.0.6


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[PATCH 05/20] x86: move dma_unmap_sg to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |    9 +++++++++
 include/asm-x86/dma-mapping_32.h |    8 --------
 include/asm-x86/dma-mapping_64.h |    8 --------
 4 files changed, 10 insertions(+), 16 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index 2474152..9205304 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -34,6 +34,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.map_single = pci32_map_single,
 	.unmap_single = NULL,
 	.map_sg = pci32_dma_map_sg,
+	.unmap_sg = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 0901154..6e7747a 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -82,4 +82,13 @@ dma_map_sg(struct device *hwdev, struct scatterlist *sg,
 	BUG_ON(!valid_dma_direction(direction));
 	return dma_ops->map_sg(hwdev, sg, nents, direction);
 }
+
+static inline void
+dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
+	     int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->unmap_sg)
+		dma_ops->unmap_sg(hwdev, sg, nents, direction);
+}
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index cdcdeff..55445e3 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -32,14 +32,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 	BUG_ON(!valid_dma_direction(direction));
 }
 
-
-static inline void
-dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-	     enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-}
-
 static inline void
 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
 			enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index b27527a..ce37efb 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -96,14 +96,6 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 	flush_write_buffers();
 }
 
-static inline void
-dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
-	     int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	dma_ops->unmap_sg(hwdev, sg, nents, direction);
-}
-
 extern int dma_supported(struct device *hwdev, u64 mask);
 
 /* same for gart, swiotlb, and nommu */
-- 
1.5.0.6


-------------------------------------------------------------------------
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[PATCH 06/20] x86: move dma_sync_single_for_cpu to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |   12 ++++++++++++
 include/asm-x86/dma-mapping_32.h |    6 ------
 include/asm-x86/dma-mapping_64.h |   11 -----------
 4 files changed, 13 insertions(+), 17 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index 9205304..dce03c8 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -35,6 +35,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.unmap_single = NULL,
 	.map_sg = pci32_dma_map_sg,
 	.unmap_sg = NULL,
+	.sync_single_for_cpu = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 6e7747a..507069d 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -91,4 +91,16 @@ dma_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nents,
 	if (dma_ops->unmap_sg)
 		dma_ops->unmap_sg(hwdev, sg, nents, direction);
 }
+
+static inline void
+dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
+			size_t size, int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->sync_single_for_cpu)
+		dma_ops->sync_single_for_cpu(hwdev, dma_handle, size,
+					     direction);
+	flush_write_buffers();
+}
+
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index 55445e3..a05b2fc 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -33,12 +33,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 }
 
 static inline void
-dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
-			enum dma_data_direction direction)
-{
-}
-
-static inline void
 dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
 			enum dma_data_direction direction)
 {
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index ce37efb..b055964 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -29,17 +29,6 @@ extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 #define dma_unmap_page dma_unmap_single
 
 static inline void
-dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
-			size_t size, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	if (dma_ops->sync_single_for_cpu)
-		dma_ops->sync_single_for_cpu(hwdev, dma_handle, size,
-					     direction);
-	flush_write_buffers();
-}
-
-static inline void
 dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
 			   size_t size, int direction)
 {
-- 
1.5.0.6


-------------------------------------------------------------------------
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[PATCH 07/20] x86: move dma_sync_single_for_device to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |   11 +++++++++++
 include/asm-x86/dma-mapping_32.h |    7 -------
 include/asm-x86/dma-mapping_64.h |   11 -----------
 4 files changed, 12 insertions(+), 18 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index dce03c8..3648824 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -36,6 +36,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.map_sg = pci32_dma_map_sg,
 	.unmap_sg = NULL,
 	.sync_single_for_cpu = NULL,
+	.sync_single_for_device = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 507069d..8ad582c 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -103,4 +103,15 @@ dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
 	flush_write_buffers();
 }
 
+static inline void
+dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
+			   size_t size, int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->sync_single_for_device)
+		dma_ops->sync_single_for_device(hwdev, dma_handle, size,
+						direction);
+	flush_write_buffers();
+}
+
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index a05b2fc..b91771a 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -33,13 +33,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 }
 
 static inline void
-dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
-			enum dma_data_direction direction)
-{
-	flush_write_buffers();
-}
-
-static inline void
 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
 			      unsigned long offset, size_t size,
 			      enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index b055964..b539f61 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -29,17 +29,6 @@ extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 #define dma_unmap_page dma_unmap_single
 
 static inline void
-dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
-			   size_t size, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	if (dma_ops->sync_single_for_device)
-		dma_ops->sync_single_for_device(hwdev, dma_handle, size,
-						direction);
-	flush_write_buffers();
-}
-
-static inline void
 dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
 			      unsigned long offset, size_t size, int direction)
 {
-- 
1.5.0.6


-------------------------------------------------------------------------
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[PATCH 08/20] x86: move dma_sync_single_range_for_cpu to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |   11 +++++++++++
 include/asm-x86/dma-mapping_32.h |    7 -------
 include/asm-x86/dma-mapping_64.h |   12 ------------
 4 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index 3648824..c501599 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -37,6 +37,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.unmap_sg = NULL,
 	.sync_single_for_cpu = NULL,
 	.sync_single_for_device = NULL,
+	.sync_single_range_for_cpu = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 8ad582c..a466470 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -114,4 +114,15 @@ dma_sync_single_for_device(struct device *hwdev, dma_addr_t dma_handle,
 	flush_write_buffers();
 }
 
+static inline void
+dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
+			      unsigned long offset, size_t size, int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->sync_single_range_for_cpu)
+		dma_ops->sync_single_range_for_cpu(hwdev, dma_handle, offset,
+						   size, direction);
+
+	flush_write_buffers();
+}
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index b91771a..e24c59d 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -33,13 +33,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 }
 
 static inline void
-dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-			      unsigned long offset, size_t size,
-			      enum dma_data_direction direction)
-{
-}
-
-static inline void
 dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
 				 unsigned long offset, size_t size,
 				 enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index b539f61..6ecafad 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -29,18 +29,6 @@ extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 #define dma_unmap_page dma_unmap_single
 
 static inline void
-dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
-			      unsigned long offset, size_t size, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	if (dma_ops->sync_single_range_for_cpu) {
-		dma_ops->sync_single_range_for_cpu(hwdev, dma_handle, offset, size, direction);
-	}
-
-	flush_write_buffers();
-}
-
-static inline void
 dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
 				 unsigned long offset, size_t size, int direction)
 {
-- 
1.5.0.6


-------------------------------------------------------------------------
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[PATCH 09/20] x86: move dma_sync_single_range_for_device to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |   14 ++++++++++++++
 include/asm-x86/dma-mapping_32.h |    8 --------
 include/asm-x86/dma-mapping_64.h |   12 ------------
 4 files changed, 15 insertions(+), 20 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index c501599..4512c30 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -38,6 +38,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.sync_single_for_cpu = NULL,
 	.sync_single_for_device = NULL,
 	.sync_single_range_for_cpu = NULL,
+	.sync_single_range_for_device = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index a466470..260538b 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -125,4 +125,18 @@ dma_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dma_handle,
 
 	flush_write_buffers();
 }
+
+static inline void
+dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
+				 unsigned long offset, size_t size,
+				 int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->sync_single_range_for_device)
+		dma_ops->sync_single_range_for_device(hwdev, dma_handle,
+						      offset, size, direction);
+
+	flush_write_buffers();
+}
+
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index e24c59d..60d5371 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -33,14 +33,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 }
 
 static inline void
-dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-				 unsigned long offset, size_t size,
-				 enum dma_data_direction direction)
-{
-	flush_write_buffers();
-}
-
-static inline void
 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
 		    enum dma_data_direction direction)
 {
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 6ecafad..dfa66cc 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -29,18 +29,6 @@ extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 #define dma_unmap_page dma_unmap_single
 
 static inline void
-dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
-				 unsigned long offset, size_t size, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	if (dma_ops->sync_single_range_for_device)
-		dma_ops->sync_single_range_for_device(hwdev, dma_handle,
-						      offset, size, direction);
-
-	flush_write_buffers();
-}
-
-static inline void
 dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
 		    int nelems, int direction)
 {
-- 
1.5.0.6


-------------------------------------------------------------------------
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[PATCH 10/20] x86: move dma_sync_sg_for_cpu to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |    9 +++++++++
 include/asm-x86/dma-mapping_32.h |    6 ------
 include/asm-x86/dma-mapping_64.h |   11 -----------
 4 files changed, 10 insertions(+), 17 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index 4512c30..d876600 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -39,6 +39,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.sync_single_for_device = NULL,
 	.sync_single_range_for_cpu = NULL,
 	.sync_single_range_for_device = NULL,
+	.sync_sg_for_cpu = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 260538b..1a301d7 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -139,4 +139,13 @@ dma_sync_single_range_for_device(struct device *hwdev, dma_addr_t dma_handle,
 	flush_write_buffers();
 }
 
+static inline void
+dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
+		    int nelems, int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->sync_sg_for_cpu)
+		dma_ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
+	flush_write_buffers();
+}
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index 60d5371..e7c82e3 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -33,12 +33,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 }
 
 static inline void
-dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-		    enum dma_data_direction direction)
-{
-}
-
-static inline void
 dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
 		    enum dma_data_direction direction)
 {
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index dfa66cc..804b154 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -27,17 +27,6 @@ extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 	dma_map_single((dev), page_address(page)+(offset), (size), (dir))
 
 #define dma_unmap_page dma_unmap_single
-
-static inline void
-dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
-		    int nelems, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	if (dma_ops->sync_sg_for_cpu)
-		dma_ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
-	flush_write_buffers();
-}
-
 static inline void
 dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 		       int nelems, int direction)
-- 
1.5.0.6


-------------------------------------------------------------------------
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[PATCH 11/20] x86: move dma_sync_sg_for_device to common header

[Glauber Costa]

i386 gets an empty function

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    1 +
 include/asm-x86/dma-mapping.h    |   11 +++++++++++
 include/asm-x86/dma-mapping_32.h |    7 -------
 include/asm-x86/dma-mapping_64.h |   12 ------------
 4 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index d876600..033d94e 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -40,6 +40,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.sync_single_range_for_cpu = NULL,
 	.sync_single_range_for_device = NULL,
 	.sync_sg_for_cpu = NULL,
+	.sync_sg_for_device = NULL,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 1a301d7..53a404b 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -148,4 +148,15 @@ dma_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
 		dma_ops->sync_sg_for_cpu(hwdev, sg, nelems, direction);
 	flush_write_buffers();
 }
+
+static inline void
+dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
+		       int nelems, int direction)
+{
+	BUG_ON(!valid_dma_direction(direction));
+	if (dma_ops->sync_sg_for_device)
+		dma_ops->sync_sg_for_device(hwdev, sg, nelems, direction);
+
+	flush_write_buffers();
+}
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index e7c82e3..eff42f4 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -32,13 +32,6 @@ dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
 	BUG_ON(!valid_dma_direction(direction));
 }
 
-static inline void
-dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-		    enum dma_data_direction direction)
-{
-	flush_write_buffers();
-}
-
 static inline int
 dma_mapping_error(dma_addr_t dma_addr)
 {
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 804b154..707dbbe 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -27,18 +27,6 @@ extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
 	dma_map_single((dev), page_address(page)+(offset), (size), (dir))
 
 #define dma_unmap_page dma_unmap_single
-static inline void
-dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
-		       int nelems, int direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	if (dma_ops->sync_sg_for_device) {
-		dma_ops->sync_sg_for_device(hwdev, sg, nelems, direction);
-	}
-
-	flush_write_buffers();
-}
-
 extern int dma_supported(struct device *hwdev, u64 mask);
 
 /* same for gart, swiotlb, and nommu */
-- 
1.5.0.6


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[PATCH 12/20] x86: move alloc and free coherent to common header

[Glauber Costa]

they are the same between architectures (except for the fact
that x86_64 has duplicate code)

move them to dma-mapping.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping.h    |   10 ++++++++++
 include/asm-x86/dma-mapping_32.h |    9 ---------
 include/asm-x86/dma-mapping_64.h |   11 -----------
 3 files changed, 10 insertions(+), 20 deletions(-)

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 53a404b..3ea3802 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -52,6 +52,16 @@ struct dma_mapping_ops {
 
 extern const struct dma_mapping_ops *dma_ops;
 
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+			   dma_addr_t *dma_handle, gfp_t flag);
+
+void dma_free_coherent(struct device *dev, size_t size,
+			 void *vaddr, dma_addr_t dma_handle);
+
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index eff42f4..d8f6420 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -8,15 +8,6 @@
 #include <asm/io.h>
 #include <asm/bug.h>
 
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
-			   dma_addr_t *dma_handle, gfp_t flag);
-
-void dma_free_coherent(struct device *dev, size_t size,
-			 void *vaddr, dma_addr_t dma_handle);
-
 static inline dma_addr_t
 dma_map_page(struct device *dev, struct page *page, unsigned long offset,
 	     size_t size, enum dma_data_direction direction)
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 707dbbe..ce881d9 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -12,17 +12,6 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
 	return (dma_addr == bad_dma_address);
 }
 
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
-
-extern void *dma_alloc_coherent(struct device *dev, size_t size,
-				dma_addr_t *dma_handle, gfp_t gfp);
-extern void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-			      dma_addr_t dma_handle);
-
 #define dma_map_page(dev,page,offset,size,dir) \
 	dma_map_single((dev), page_address(page)+(offset), (size), (dir))
 
-- 
1.5.0.6


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[PATCH 13/20] x86: move dma_map_page and dma_unmap_page to common header

[Glauber Costa]

They are similar enough to do this move.
the macro version is ugly, and we use inline functions instead

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping.h    |   14 ++++++++++++++
 include/asm-x86/dma-mapping_32.h |   15 ---------------
 include/asm-x86/dma-mapping_64.h |    4 ----
 3 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 3ea3802..b5a413a 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -169,4 +169,18 @@ dma_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 
 	flush_write_buffers();
 }
+
+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
+				      size_t offset, size_t size,
+				      int direction)
+{
+	return dma_map_single(dev, page_address(page)+offset, size, direction);
+}
+
+static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
+				  size_t size, int direction)
+{
+	dma_unmap_single(dev, addr, size, direction);
+}
+
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index d8f6420..c61ae7f 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -8,21 +8,6 @@
 #include <asm/io.h>
 #include <asm/bug.h>
 
-static inline dma_addr_t
-dma_map_page(struct device *dev, struct page *page, unsigned long offset,
-	     size_t size, enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-	return page_to_phys(page) + offset;
-}
-
-static inline void
-dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG_ON(!valid_dma_direction(direction));
-}
-
 static inline int
 dma_mapping_error(dma_addr_t dma_addr)
 {
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index ce881d9..2b4a430 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -12,10 +12,6 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
 	return (dma_addr == bad_dma_address);
 }
 
-#define dma_map_page(dev,page,offset,size,dir) \
-	dma_map_single((dev), page_address(page)+(offset), (size), (dir))
-
-#define dma_unmap_page dma_unmap_single
 extern int dma_supported(struct device *hwdev, u64 mask);
 
 /* same for gart, swiotlb, and nommu */
-- 
1.5.0.6


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[PATCH 14/20] x86: move dma_cache_sync to common header

[Glauber Costa]

they are the same in both architectures.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping.h    |    6 ++++++
 include/asm-x86/dma-mapping_32.h |    7 -------
 include/asm-x86/dma-mapping_64.h |    7 -------
 3 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index b5a413a..70a5ede 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -183,4 +183,10 @@ static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
 	dma_unmap_single(dev, addr, size, direction);
 }
 
+static inline void
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+	enum dma_data_direction dir)
+{
+	flush_write_buffers();
+}
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index c61ae7f..e60c30a 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -55,13 +55,6 @@ dma_get_cache_alignment(void)
 
 #define dma_is_consistent(d, h)	(1)
 
-static inline void
-dma_cache_sync(struct device *dev, void *vaddr, size_t size,
-	       enum dma_data_direction direction)
-{
-	flush_write_buffers();
-}
-
 #define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
 extern int
 dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 2b4a430..b1bc6ca 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -24,13 +24,6 @@ static inline int dma_get_cache_alignment(void)
 
 extern int dma_set_mask(struct device *dev, u64 mask);
 
-static inline void
-dma_cache_sync(struct device *dev, void *vaddr, size_t size,
-	enum dma_data_direction dir)
-{
-	flush_write_buffers();
-}
-
 extern struct device fallback_dev;
 extern int panic_on_overflow;
 
-- 
1.5.0.6


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[PATCH 15/20] x86: move dma_supported and dma_set_mask to pci-dma_32.c

[Glauber Costa]

This is the way x86_64 does, so this make them equal. They have
to be extern now in the header, and the extern definition is moved to
the common dma-mapping.h header

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-dma_32.c     |   33 +++++++++++++++++++++++++++++++++
 include/asm-x86/dma-mapping.h    |    3 +++
 include/asm-x86/dma-mapping_32.h |   29 -----------------------------
 include/asm-x86/dma-mapping_64.h |    4 ----
 4 files changed, 36 insertions(+), 33 deletions(-)

diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
index 5133032..453b4bd 100644
--- a/arch/x86/kernel/pci-dma_32.c
+++ b/arch/x86/kernel/pci-dma_32.c
@@ -156,6 +156,39 @@ EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
 int forbid_dac;
 EXPORT_SYMBOL(forbid_dac);
 
+int
+dma_supported(struct device *dev, u64 mask)
+{
+	/*
+	 * we fall back to GFP_DMA when the mask isn't all 1s,
+	 * so we can't guarantee allocations that must be
+	 * within a tighter range than GFP_DMA..
+	 */
+	if (mask < 0x00ffffff)
+		return 0;
+
+	/* Work around chipset bugs */
+	if (forbid_dac > 0 && mask > 0xffffffffULL)
+		return 0;
+
+	if (dma_ops->dma_supported)
+		return dma_ops->dma_supported(dev, mask);
+
+	return 1;
+}
+
+int
+dma_set_mask(struct device *dev, u64 mask)
+{
+	if (!dev->dma_mask || !dma_supported(dev, mask))
+		return -EIO;
+
+	*dev->dma_mask = mask;
+
+	return 0;
+}
+
+
 static __devinit void via_no_dac(struct pci_dev *dev)
 {
 	if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 70a5ede..06eb448 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -62,6 +62,9 @@ void dma_free_coherent(struct device *dev, size_t size,
 			 void *vaddr, dma_addr_t dma_handle);
 
 
+extern int dma_supported(struct device *hwdev, u64 mask);
+extern int dma_set_mask(struct device *dev, u64 mask);
+
 #ifdef CONFIG_X86_32
 # include "dma-mapping_32.h"
 #else
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index e60c30a..fd7246d 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -17,35 +17,6 @@ dma_mapping_error(dma_addr_t dma_addr)
 extern int forbid_dac;
 
 static inline int
-dma_supported(struct device *dev, u64 mask)
-{
-        /*
-         * we fall back to GFP_DMA when the mask isn't all 1s,
-         * so we can't guarantee allocations that must be
-         * within a tighter range than GFP_DMA..
-         */
-        if(mask < 0x00ffffff)
-                return 0;
-
-	/* Work around chipset bugs */
-	if (forbid_dac > 0 && mask > 0xffffffffULL)
-		return 0;
-
-	return 1;
-}
-
-static inline int
-dma_set_mask(struct device *dev, u64 mask)
-{
-	if(!dev->dma_mask || !dma_supported(dev, mask))
-		return -EIO;
-
-	*dev->dma_mask = mask;
-
-	return 0;
-}
-
-static inline int
 dma_get_cache_alignment(void)
 {
 	/* no easy way to get cache size on all x86, so return the
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index b1bc6ca..9674dac 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -12,8 +12,6 @@ static inline int dma_mapping_error(dma_addr_t dma_addr)
 	return (dma_addr == bad_dma_address);
 }
 
-extern int dma_supported(struct device *hwdev, u64 mask);
-
 /* same for gart, swiotlb, and nommu */
 static inline int dma_get_cache_alignment(void)
 {
@@ -22,8 +20,6 @@ static inline int dma_get_cache_alignment(void)
 
 #define dma_is_consistent(d, h) 1
 
-extern int dma_set_mask(struct device *dev, u64 mask);
-
 extern struct device fallback_dev;
 extern int panic_on_overflow;
 
-- 
1.5.0.6


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[PATCH 16/20] x86: align to clflush size

[Glauber Costa]

Do it instead of using the conservative approach we're currently
doing. This is the way x86_64 does, and this patch makes this piece
of code the same between them, ready to be integrated

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping_32.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index fd7246d..d0512c9 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -21,7 +21,7 @@ dma_get_cache_alignment(void)
 {
 	/* no easy way to get cache size on all x86, so return the
 	 * maximum possible, to be safe */
-	return (1 << INTERNODE_CACHE_SHIFT);
+	return boot_cpu_data.x86_clflush_size;
 }
 
 #define dma_is_consistent(d, h)	(1)
-- 
1.5.0.6


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[PATCH 17/20] x86: provide a bad_dma_address symbol for i386

[Glauber Costa]

It's initially 0, since we don't expect any DMA there.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-dma_32.c     |    4 ++++
 include/asm-x86/dma-mapping.h    |    2 ++
 include/asm-x86/dma-mapping_64.h |    1 -
 3 files changed, 6 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
index 453b4bd..55ab3c8 100644
--- a/arch/x86/kernel/pci-dma_32.c
+++ b/arch/x86/kernel/pci-dma_32.c
@@ -14,6 +14,10 @@
 #include <linux/module.h>
 #include <asm/io.h>
 
+/* For i386, we make it point to the NULL address */
+dma_addr_t bad_dma_address __read_mostly = 0x0;
+EXPORT_SYMBOL(bad_dma_address);
+
 struct dma_coherent_mem {
 	void		*virt_base;
 	u32		device_base;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 06eb448..908fcaa 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -10,6 +10,8 @@
 #include <asm/io.h>
 #include <asm/swiotlb.h>
 
+extern dma_addr_t bad_dma_address;
+
 struct dma_mapping_ops {
 	int             (*mapping_error)(dma_addr_t dma_addr);
 	void*           (*alloc_coherent)(struct device *dev, size_t size,
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 9674dac..352bf41 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -1,7 +1,6 @@
 #ifndef _X8664_DMA_MAPPING_H
 #define _X8664_DMA_MAPPING_H 1
 
-extern dma_addr_t bad_dma_address;
 extern int iommu_merge;
 
 static inline int dma_mapping_error(dma_addr_t dma_addr)
-- 
1.5.0.6


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[PATCH 18/20] x86: unify dma_mapping_error

[Glauber Costa]

We provide a map_error function in pci-base_32.c to make
sure i386 keeps with the same behaviour it used to.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 arch/x86/kernel/pci-base_32.c    |    7 +++++++
 include/asm-x86/dma-mapping.h    |    8 ++++++++
 include/asm-x86/dma-mapping_32.h |    6 ------
 include/asm-x86/dma-mapping_64.h |    8 --------
 4 files changed, 15 insertions(+), 14 deletions(-)

diff --git a/arch/x86/kernel/pci-base_32.c b/arch/x86/kernel/pci-base_32.c
index 033d94e..89d3587 100644
--- a/arch/x86/kernel/pci-base_32.c
+++ b/arch/x86/kernel/pci-base_32.c
@@ -30,6 +30,12 @@ static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
 	return nents;
 }
 
+/* Make sure we keep the same behaviour */
+static int pci32_map_error(dma_addr_t dma_addr)
+{
+	return 0;
+}
+
 static const struct dma_mapping_ops pci32_dma_ops = {
 	.map_single = pci32_map_single,
 	.unmap_single = NULL,
@@ -41,6 +47,7 @@ static const struct dma_mapping_ops pci32_dma_ops = {
 	.sync_single_range_for_device = NULL,
 	.sync_sg_for_cpu = NULL,
 	.sync_sg_for_device = NULL,
+	.mapping_error = pci32_map_error,
 };
 
 const struct dma_mapping_ops *dma_ops = &pci32_dma_ops;
diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 908fcaa..352433b 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -54,6 +54,14 @@ struct dma_mapping_ops {
 
 extern const struct dma_mapping_ops *dma_ops;
 
+static inline int dma_mapping_error(dma_addr_t dma_addr)
+{
+	if (dma_ops->mapping_error)
+		return dma_ops->mapping_error(dma_addr);
+
+	return (dma_addr == bad_dma_address);
+}
+
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
 
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index d0512c9..03a75f8 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -8,12 +8,6 @@
 #include <asm/io.h>
 #include <asm/bug.h>
 
-static inline int
-dma_mapping_error(dma_addr_t dma_addr)
-{
-	return 0;
-}
-
 extern int forbid_dac;
 
 static inline int
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
index 352bf41..8353025 100644
--- a/include/asm-x86/dma-mapping_64.h
+++ b/include/asm-x86/dma-mapping_64.h
@@ -3,14 +3,6 @@
 
 extern int iommu_merge;
 
-static inline int dma_mapping_error(dma_addr_t dma_addr)
-{
-	if (dma_ops->mapping_error)
-		return dma_ops->mapping_error(dma_addr);
-
-	return (dma_addr == bad_dma_address);
-}
-
 /* same for gart, swiotlb, and nommu */
 static inline int dma_get_cache_alignment(void)
 {
-- 
1.5.0.6


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[PATCH 19/20] x86: move ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY to dma-mapping.h

[Glauber Costa]

define it conditionally to i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping.h    |   14 ++++++++++++++
 include/asm-x86/dma-mapping_32.h |   12 ------------
 2 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 352433b..9548b19 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -202,4 +202,18 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 {
 	flush_write_buffers();
 }
+
+#ifdef CONFIG_X86_32
+#  define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
+extern int
+dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
+			    dma_addr_t device_addr, size_t size, int flags);
+
+extern void
+dma_release_declared_memory(struct device *dev);
+
+extern void *
+dma_mark_declared_memory_occupied(struct device *dev,
+				  dma_addr_t device_addr, size_t size);
+#endif /* CONFIG_X86_32 */
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
index 03a75f8..4ec4f45 100644
--- a/include/asm-x86/dma-mapping_32.h
+++ b/include/asm-x86/dma-mapping_32.h
@@ -20,16 +20,4 @@ dma_get_cache_alignment(void)
 
 #define dma_is_consistent(d, h)	(1)
 
-#define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
-extern int
-dma_declare_coherent_memory(struct device *dev, dma_addr_t bus_addr,
-			    dma_addr_t device_addr, size_t size, int flags);
-
-extern void
-dma_release_declared_memory(struct device *dev);
-
-extern void *
-dma_mark_declared_memory_occupied(struct device *dev,
-				  dma_addr_t device_addr, size_t size);
-
 #endif
-- 
1.5.0.6


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[PATCH 20/20] x86: delete the arch-specific dma-mapping headers.

[Glauber Costa]

all the code that is left is ready to be merged as-is
in dma-mapping.h

Signed-off-by: Glauber Costa <gcosta@redhat.com>
---
 include/asm-x86/dma-mapping.h    |   19 +++++++++++++------
 include/asm-x86/dma-mapping_32.h |   23 -----------------------
 include/asm-x86/dma-mapping_64.h |   17 -----------------
 3 files changed, 13 insertions(+), 46 deletions(-)
 delete mode 100644 include/asm-x86/dma-mapping_32.h
 delete mode 100644 include/asm-x86/dma-mapping_64.h

diff --git a/include/asm-x86/dma-mapping.h b/include/asm-x86/dma-mapping.h
index 9548b19..3809b35 100644
--- a/include/asm-x86/dma-mapping.h
+++ b/include/asm-x86/dma-mapping.h
@@ -11,6 +11,9 @@
 #include <asm/swiotlb.h>
 
 extern dma_addr_t bad_dma_address;
+extern int iommu_merge;
+extern struct device fallback_dev;
+extern int panic_on_overflow;
 
 struct dma_mapping_ops {
 	int             (*mapping_error)(dma_addr_t dma_addr);
@@ -75,12 +78,6 @@ void dma_free_coherent(struct device *dev, size_t size,
 extern int dma_supported(struct device *hwdev, u64 mask);
 extern int dma_set_mask(struct device *dev, u64 mask);
 
-#ifdef CONFIG_X86_32
-# include "dma-mapping_32.h"
-#else
-# include "dma-mapping_64.h"
-#endif
-
 static inline dma_addr_t
 dma_map_single(struct device *hwdev, void *ptr, size_t size,
 	       int direction)
@@ -203,6 +200,15 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 	flush_write_buffers();
 }
 
+static inline int dma_get_cache_alignment(void)
+{
+	/* no easy way to get cache size on all x86, so return the
+	 * maximum possible, to be safe */
+	return boot_cpu_data.x86_clflush_size;
+}
+
+#define dma_is_consistent(d, h)	(1)
+
 #ifdef CONFIG_X86_32
 #  define ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY
 extern int
@@ -215,5 +221,6 @@ dma_release_declared_memory(struct device *dev);
 extern void *
 dma_mark_declared_memory_occupied(struct device *dev,
 				  dma_addr_t device_addr, size_t size);
+extern int forbid_dac;
 #endif /* CONFIG_X86_32 */
 #endif
diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
deleted file mode 100644
index 4ec4f45..0000000
--- a/include/asm-x86/dma-mapping_32.h
+++ /dev/null
@@ -1,23 +0,0 @@
-#ifndef _ASM_I386_DMA_MAPPING_H
-#define _ASM_I386_DMA_MAPPING_H
-
-#include <linux/mm.h>
-#include <linux/scatterlist.h>
-
-#include <asm/cache.h>
-#include <asm/io.h>
-#include <asm/bug.h>
-
-extern int forbid_dac;
-
-static inline int
-dma_get_cache_alignment(void)
-{
-	/* no easy way to get cache size on all x86, so return the
-	 * maximum possible, to be safe */
-	return boot_cpu_data.x86_clflush_size;
-}
-
-#define dma_is_consistent(d, h)	(1)
-
-#endif
diff --git a/include/asm-x86/dma-mapping_64.h b/include/asm-x86/dma-mapping_64.h
deleted file mode 100644
index 8353025..0000000
--- a/include/asm-x86/dma-mapping_64.h
+++ /dev/null
@@ -1,17 +0,0 @@
-#ifndef _X8664_DMA_MAPPING_H
-#define _X8664_DMA_MAPPING_H 1
-
-extern int iommu_merge;
-
-/* same for gart, swiotlb, and nommu */
-static inline int dma_get_cache_alignment(void)
-{
-	return boot_cpu_data.x86_clflush_size;
-}
-
-#define dma_is_consistent(d, h) 1
-
-extern struct device fallback_dev;
-extern int panic_on_overflow;
-
-#endif /* _X8664_DMA_MAPPING_H */
-- 
1.5.0.6


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Re: [PATCH 16/20] x86: align to clflush size

[Ingo Molnar]

* Glauber Costa <gcosta@redhat.com> wrote:

>  	/* no easy way to get cache size on all x86, so return the
>  	 * maximum possible, to be safe */
> -	return (1 << INTERNODE_CACHE_SHIFT);
> +	return boot_cpu_data.x86_clflush_size;

please update the comment too. (just add a delta patch to your next 
series)

	Ingo

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Re: [PATCH 15/20] x86: move dma_supported and dma_set_mask to pci-dma_32.c

[Mark McLoughlin]

On Tue, 2008-03-25 at 18:36 -0300, Glauber Costa wrote:
> This is the way x86_64 does, so this make them equal. They have
> to be extern now in the header, and the extern definition is moved to
> the common dma-mapping.h header
> 
> Signed-off-by: Glauber Costa <gcosta@redhat.com>
...
> diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
> index 5133032..453b4bd 100644
> --- a/arch/x86/kernel/pci-dma_32.c
> +++ b/arch/x86/kernel/pci-dma_32.c
> @@ -156,6 +156,39 @@ EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
>  int forbid_dac;
>  EXPORT_SYMBOL(forbid_dac);
>  
> +int
> +dma_supported(struct device *dev, u64 mask)
> +{
...
> +}
> +
> +int
> +dma_set_mask(struct device *dev, u64 mask)
> +{
...
> +}
...
> diff --git a/include/asm-x86/dma-mapping_32.h b/include/asm-x86/dma-mapping_32.h
> index e60c30a..fd7246d 100644
> --- a/include/asm-x86/dma-mapping_32.h
> +++ b/include/asm-x86/dma-mapping_32.h
> @@ -17,35 +17,6 @@ dma_mapping_error(dma_addr_t dma_addr)
>  extern int forbid_dac;
>  
>  static inline int
> -dma_supported(struct device *dev, u64 mask)
> -{
...
> -}
> -
> -static inline int
> -dma_set_mask(struct device *dev, u64 mask)
> -{
...
> -}

This breaks for me with:

ERROR: "dma_supported" [drivers/ssb/ssb.ko] undefined!
ERROR: "dma_set_mask" [drivers/scsi/qla2xxx/qla2xxx.ko] undefined!
ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic7xxx.ko] undefined!
ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic79xx.ko] undefined!
ERROR: "dma_supported" [drivers/net/pcnet32.ko] undefined!
ERROR: "dma_supported" [drivers/media/video/saa7134/saa7134.ko] undefined!
ERROR: "dma_set_mask" [drivers/media/video/meye.ko] undefined!
ERROR: "dma_supported" [drivers/media/video/cx88/cx8802.ko] undefined!
ERROR: "dma_supported" [drivers/media/video/cx88/cx8800.ko] undefined!
ERROR: "dma_supported" [drivers/media/video/cx88/cx88-alsa.ko] undefined!
ERROR: "dma_supported" [drivers/media/video/cx23885/cx23885.ko] undefined!

They just need to be exported like on x86_64.

Cheers,
Mark.

Subject: [PATCH] x86: export dma_supported() and dma_set_mask() on i386

dma_supported() and dma_set_mask() were previously inlined,
but are now moved to pci-dma_32.c.

Since they're used by various drivers, they need to be
exported.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
---
 arch/x86/kernel/pci-dma_32.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/pci-dma_32.c b/arch/x86/kernel/pci-dma_32.c
index 55ab3c8..be6b1f6 100644
--- a/arch/x86/kernel/pci-dma_32.c
+++ b/arch/x86/kernel/pci-dma_32.c
@@ -180,6 +180,7 @@ dma_supported(struct device *dev, u64 mask)
 
 	return 1;
 }
+EXPORT_SYMBOL(dma_supported);
 
 int
 dma_set_mask(struct device *dev, u64 mask)
@@ -191,6 +192,7 @@ dma_set_mask(struct device *dev, u64 mask)
 
 	return 0;
 }
+EXPORT_SYMBOL(dma_set_mask);
 
 
 static __devinit void via_no_dac(struct pci_dev *dev)


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Re: [PATCH 15/20] x86: move dma_supported and dma_set_mask to pci-dma_32.c

[Ingo Molnar]

* Mark McLoughlin <markmc@redhat.com> wrote:

> This breaks for me with:
> 
> ERROR: "dma_supported" [drivers/ssb/ssb.ko] undefined!
> ERROR: "dma_set_mask" [drivers/scsi/qla2xxx/qla2xxx.ko] undefined!
> ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic7xxx.ko] undefined!
> ERROR: "dma_set_mask" [drivers/scsi/aic7xxx/aic79xx.ko] undefined!
> ERROR: "dma_supported" [drivers/net/pcnet32.ko] undefined!
> ERROR: "dma_supported" [drivers/media/video/saa7134/saa7134.ko] undefined!
> ERROR: "dma_set_mask" [drivers/media/video/meye.ko] undefined!
> ERROR: "dma_supported" [drivers/media/video/cx88/cx8802.ko] undefined!
> ERROR: "dma_supported" [drivers/media/video/cx88/cx8800.ko] undefined!
> ERROR: "dma_supported" [drivers/media/video/cx88/cx88-alsa.ko] undefined!
> ERROR: "dma_supported" [drivers/media/video/cx23885/cx23885.ko] undefined!
> 
> They just need to be exported like on x86_64.

thanks Mark, applied.

	Ingo

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Re: [PATCH 0/20] dma_ops for i386

[Ingo Molnar]

* Glauber Costa <gcosta@redhat.com> wrote:

> Hello,
> 
> Here there is a series of 20 patches that lays the foundations for 
> using dma_ops in i386 in the very same way x86_64, as well as many 
> other architectures already do.
> 
> The functions themselves for i386 are placed in a pci-base_32.c, but 
> just a few among them are actually implemented. Most were no-ops 
> anyway.
> 
> Also, as I said, this is by no means a complete coverage of dma_ops. 
> there are still some call sites to be patches in pci-dma_32.c 
> (although I don't really plan to change them, but to integrate them in 
> a single pci-dma.c). I intend to have it done progressively.
> 
> The granularity is per-operation, meaning each patch moves one 
> specific function to the common header. This is compiled-tested in 
> both i386 and x86_64 in ~5 randconfigs each, and boot-tested in my 
> hardware with my default configs
> 
> The motivation for that is the ongoing work for pci-passthrough in 
> KVM. So ingo, avi, what do you think it's the best way to handle these 
> patches through?

looks very nice to me! I've applied it to x86.git, lets see what 
happens.

	Ingo

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Re: [PATCH 0/20] dma_ops for i386

[Ingo Molnar]

[-- Attachment #1: Type: text/plain, Size: 4070 bytes --]


* Ingo Molnar <mingo@elte.hu> wrote:

> > The motivation for that is the ongoing work for pci-passthrough in 
> > KVM. So ingo, avi, what do you think it's the best way to handle 
> > these patches through?
> 
> looks very nice to me! I've applied it to x86.git, lets see what 
> happens.

Houston, we've got a problem! :-/

randconfig testing found that this patchset broke sendfile on certain 
.config's - DMA started returning all 0xfffffffff data, corrupting 
files. (config attached)

After some bisection fun it turns out that the conversions from struct 
page are wrong:

+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
+                                     size_t offset, size_t size,
+                                     int direction)
+{
+       return dma_map_single(dev, page_address(page)+offset, size, direction);

because page_address() is not defined for highmem pages in general. (and 
even if it's defined, it will corrupt data)

changing it to page_to_phys() is not good because it goes via a 32-bit 
bottleneck that trims things on PAE:

       dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,

the 'ptr' is 32-bit albeit it's a DMA target.

what i came up is the prototype 32-bit fix below - this works on 32-bit 
but breaks 64-bit because we pass in physical addresses instead of 
virtual direct addresses.

i'll fix the 64-bit side but that means materially touching all the 
dma_mapping_ops instantiations materially on the 64-bit side - not 
really something we wanted to do :-/

	Ingo

---------------->
Subject: x86: dma-ops on highmem fix
From: Ingo Molnar <mingo@elte.hu>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/pci-base_32.c |    4 ++--
 include/asm-x86/dma-mapping.h |   10 ++++++----
 2 files changed, 8 insertions(+), 6 deletions(-)

Index: linux-x86.q/arch/x86/kernel/pci-base_32.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-base_32.c
+++ linux-x86.q/arch/x86/kernel/pci-base_32.c
@@ -4,12 +4,12 @@
 #include <linux/dma-mapping.h>
 #include <asm/dma-mapping.h>
 
-static dma_addr_t pci32_map_single(struct device *dev, void *ptr,
+static dma_addr_t pci32_map_single(struct device *dev, u64 ptr,
 				   size_t size, int direction)
 {
 	WARN_ON(size == 0);
 	flush_write_buffers();
-	return virt_to_phys(ptr);
+	return ptr;
 }
 
 static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
Index: linux-x86.q/include/asm-x86/dma-mapping.h
===================================================================
--- linux-x86.q.orig/include/asm-x86/dma-mapping.h
+++ linux-x86.q/include/asm-x86/dma-mapping.h
@@ -16,10 +16,10 @@ struct dma_mapping_ops {
 				dma_addr_t *dma_handle, gfp_t gfp);
 	void            (*free_coherent)(struct device *dev, size_t size,
 				void *vaddr, dma_addr_t dma_handle);
-	dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
+	dma_addr_t      (*map_single)(struct device *hwdev, u64 ptr,
 				size_t size, int direction);
 	/* like map_single, but doesn't check the device mask */
-	dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
+	dma_addr_t      (*map_simple)(struct device *hwdev, u64 ptr,
 				size_t size, int direction);
 	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
 				size_t size, int direction);
@@ -73,7 +73,7 @@ dma_map_single(struct device *hwdev, voi
 	       int direction)
 {
 	BUG_ON(!valid_dma_direction(direction));
-	return dma_ops->map_single(hwdev, ptr, size, direction);
+	return dma_ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
 }
 
 static inline void
@@ -174,7 +174,9 @@ static inline dma_addr_t dma_map_page(st
 				      size_t offset, size_t size,
 				      int direction)
 {
-	return dma_map_single(dev, page_address(page)+offset, size, direction);
+	BUG_ON(!valid_dma_direction(direction));
+	return dma_ops->map_single(dev, page_to_phys(page)+offset,
+				   size, direction);
 }
 
 static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,

[-- Attachment #2: config --]
[-- Type: text/plain, Size: 45675 bytes --]

#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.25-rc7
# Wed Mar 26 12:48:59 2008
#
# CONFIG_64BIT is not set
CONFIG_X86_32=y
# CONFIG_X86_64 is not set
CONFIG_X86=y
# CONFIG_GENERIC_LOCKBREAK is not set
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_SEMAPHORE_SLEEPERS=y
CONFIG_FAST_CMPXCHG_LOCAL=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_GENERIC_HWEIGHT=y
# CONFIG_GENERIC_GPIO is not set
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_DMI=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
# CONFIG_ARCH_HAS_ILOG2_U32 is not set
# CONFIG_ARCH_HAS_ILOG2_U64 is not set
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
# CONFIG_GENERIC_TIME_VSYSCALL is not set
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_HAVE_SETUP_PER_CPU_AREA=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
# CONFIG_ZONE_DMA32 is not set
CONFIG_ARCH_POPULATES_NODE_MAP=y
# CONFIG_AUDIT_ARCH is not set
CONFIG_ARCH_SUPPORTS_AOUT=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_X86_SMP=y
CONFIG_X86_32_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_X86_TRAMPOLINE=y
CONFIG_KTIME_SCALAR=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"

#
# General setup
#
CONFIG_EXPERIMENTAL=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
# CONFIG_SWAP is not set
# CONFIG_SYSVIPC is not set
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
# CONFIG_TASK_DELAY_ACCT is not set
# CONFIG_TASK_XACCT is not set
# CONFIG_AUDIT is not set
# CONFIG_IKCONFIG is not set
CONFIG_LOG_BUF_SHIFT=20
CONFIG_CGROUPS=y
CONFIG_CGROUP_DEBUG=y
CONFIG_CGROUP_NS=y
CONFIG_CPUSETS=y
# CONFIG_GROUP_SCHED is not set
# CONFIG_CGROUP_CPUACCT is not set
CONFIG_RESOURCE_COUNTERS=y
# CONFIG_CGROUP_MEM_RES_CTLR is not set
CONFIG_SYSFS_DEPRECATED=y
CONFIG_SYSFS_DEPRECATED_V2=y
# CONFIG_PROC_PID_CPUSET is not set
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
# CONFIG_UTS_NS is not set
# CONFIG_USER_NS is not set
CONFIG_PID_NS=y
# CONFIG_BLK_DEV_INITRD is not set
# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
CONFIG_SYSCTL=y
# CONFIG_EMBEDDED is not set
CONFIG_UID16=y
CONFIG_SYSCTL_SYSCALL=y
CONFIG_KALLSYMS=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_COMPAT_BRK=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLAB=y
# CONFIG_SLUB is not set
# CONFIG_SLOB is not set
# CONFIG_PROFILING is not set
# CONFIG_MARKERS is not set
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0
# CONFIG_MODULES is not set
CONFIG_STOP_MACHINE=y
CONFIG_BLOCK=y
# CONFIG_LBD is not set
CONFIG_BLK_DEV_IO_TRACE=y
# CONFIG_LSF is not set
# CONFIG_BLK_DEV_BSG is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
# CONFIG_IOSCHED_DEADLINE is not set
# CONFIG_IOSCHED_CFQ is not set
# CONFIG_DEFAULT_AS is not set
# CONFIG_DEFAULT_DEADLINE is not set
# CONFIG_DEFAULT_CFQ is not set
CONFIG_DEFAULT_NOOP=y
CONFIG_DEFAULT_IOSCHED="noop"
CONFIG_PREEMPT_NOTIFIERS=y
# CONFIG_CLASSIC_RCU is not set

#
# Processor type and features
#
# CONFIG_TICK_ONESHOT is not set
# CONFIG_NO_HZ is not set
# CONFIG_HIGH_RES_TIMERS is not set
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_SMP=y
CONFIG_X86_PC=y
# CONFIG_X86_ELAN is not set
# CONFIG_X86_VOYAGER is not set
# CONFIG_X86_NUMAQ is not set
# CONFIG_X86_SUMMIT is not set
# CONFIG_X86_BIGSMP is not set
# CONFIG_X86_VISWS is not set
# CONFIG_X86_GENERICARCH is not set
# CONFIG_X86_ES7000 is not set
# CONFIG_X86_RDC321X is not set
# CONFIG_X86_VSMP is not set
# CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER is not set
# CONFIG_PARAVIRT_GUEST is not set
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
# CONFIG_M686 is not set
# CONFIG_MPENTIUMII is not set
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUMM is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MK8 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MEFFICEON is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP2 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MGEODEGX1 is not set
# CONFIG_MGEODE_LX is not set
CONFIG_MCYRIXIII=y
# CONFIG_MVIAC3_2 is not set
# CONFIG_MVIAC7 is not set
# CONFIG_MPSC is not set
# CONFIG_MCORE2 is not set
# CONFIG_GENERIC_CPU is not set
CONFIG_X86_GENERIC=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=7
CONFIG_X86_XADD=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_ALIGNMENT_16=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_USE_3DNOW=y
CONFIG_X86_TSC=y
CONFIG_X86_MINIMUM_CPU_FAMILY=4
CONFIG_X86_DEBUGCTLMSR=y
# CONFIG_HPET_TIMER is not set
# CONFIG_IOMMU_HELPER is not set
CONFIG_NR_CPUS=8
# CONFIG_SCHED_SMT is not set
CONFIG_SCHED_MC=y
# CONFIG_PREEMPT_NONE is not set
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_RCU=y
# CONFIG_RCU_TRACE is not set
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_MCE=y
# CONFIG_X86_MCE_NONFATAL is not set
# CONFIG_X86_MCE_P4THERMAL is not set
CONFIG_VM86=y
# CONFIG_TOSHIBA is not set
CONFIG_I8K=y
CONFIG_X86_REBOOTFIXUPS=y
CONFIG_MICROCODE=y
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=y
# CONFIG_X86_CPUID is not set
# CONFIG_NOHIGHMEM is not set
# CONFIG_HIGHMEM4G is not set
CONFIG_HIGHMEM64G=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
CONFIG_X86_PAE=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
# CONFIG_DISCONTIGMEM_MANUAL is not set
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_SPARSEMEM_STATIC=y
# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_RESOURCES_64BIT=y
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_HIGHPTE=y
# CONFIG_MATH_EMULATION is not set
# CONFIG_MTRR is not set
# CONFIG_EFI is not set
# CONFIG_IRQBALANCE is not set
# CONFIG_SECCOMP is not set
CONFIG_HZ_100=y
# CONFIG_HZ_250 is not set
# CONFIG_HZ_300 is not set
# CONFIG_HZ_1000 is not set
CONFIG_HZ=100
# CONFIG_SCHED_HRTICK is not set
# CONFIG_KEXEC is not set
CONFIG_CRASH_DUMP=y
CONFIG_PHYSICAL_START=0x100000
CONFIG_RELOCATABLE=y
CONFIG_PHYSICAL_ALIGN=0x100000
CONFIG_HOTPLUG_CPU=y
CONFIG_COMPAT_VDSO=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y

#
# Power management options
#
CONFIG_PM=y
CONFIG_PM_LEGACY=y
# CONFIG_PM_DEBUG is not set
# CONFIG_SUSPEND is not set
CONFIG_ACPI=y
# CONFIG_ACPI_PROCFS is not set
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
# CONFIG_ACPI_AC is not set
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
# CONFIG_ACPI_FAN is not set
CONFIG_ACPI_DOCK=y
# CONFIG_ACPI_BAY is not set
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_HOTPLUG_CPU=y
# CONFIG_ACPI_THERMAL is not set
# CONFIG_ACPI_WMI is not set
# CONFIG_ACPI_ASUS is not set
CONFIG_ACPI_TOSHIBA=y
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=0
# CONFIG_ACPI_DEBUG is not set
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=y
# CONFIG_ACPI_SBS is not set

#
# CPU Frequency scaling
#
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GOMMCONFIG is not set
CONFIG_PCI_GODIRECT=y
# CONFIG_PCI_GOANY is not set
CONFIG_PCI_DIRECT=y
CONFIG_PCI_DOMAINS=y
# CONFIG_PCIEPORTBUS is not set
CONFIG_ARCH_SUPPORTS_MSI=y
# CONFIG_PCI_MSI is not set
# CONFIG_PCI_LEGACY is not set
CONFIG_HT_IRQ=y
CONFIG_ISA_DMA_API=y
# CONFIG_ISA is not set
# CONFIG_MCA is not set
# CONFIG_SCx200 is not set
CONFIG_K8_NB=y
CONFIG_PCCARD=y
# CONFIG_PCMCIA_DEBUG is not set
CONFIG_PCMCIA=y
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_PCMCIA_IOCTL=y
# CONFIG_CARDBUS is not set

#
# PC-card bridges
#
# CONFIG_YENTA is not set
# CONFIG_PD6729 is not set
# CONFIG_I82092 is not set
# CONFIG_HOTPLUG_PCI is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_AOUT=y
CONFIG_BINFMT_MISC=y

#
# Networking
#
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_UNIX=y
CONFIG_XFRM=y
# CONFIG_XFRM_USER is not set
# CONFIG_XFRM_SUB_POLICY is not set
CONFIG_XFRM_MIGRATE=y
CONFIG_XFRM_STATISTICS=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
# CONFIG_ASK_IP_FIB_HASH is not set
CONFIG_IP_FIB_TRIE=y
# CONFIG_IP_FIB_HASH is not set
CONFIG_IP_FIB_TRIE_STATS=y
# CONFIG_IP_MULTIPLE_TABLES is not set
CONFIG_IP_ROUTE_MULTIPATH=y
# CONFIG_IP_ROUTE_VERBOSE is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
CONFIG_NET_IPGRE=y
# CONFIG_NET_IPGRE_BROADCAST is not set
CONFIG_IP_MROUTE=y
# CONFIG_IP_PIMSM_V1 is not set
# CONFIG_IP_PIMSM_V2 is not set
CONFIG_ARPD=y
CONFIG_SYN_COOKIES=y
# CONFIG_INET_AH is not set
CONFIG_INET_ESP=y
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_XFRM_TUNNEL is not set
# CONFIG_INET_TUNNEL is not set
CONFIG_INET_XFRM_MODE_TRANSPORT=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
# CONFIG_INET_XFRM_MODE_BEET is not set
CONFIG_INET_LRO=y
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
CONFIG_TCP_CONG_ADVANCED=y
CONFIG_TCP_CONG_BIC=y
# CONFIG_TCP_CONG_CUBIC is not set
CONFIG_TCP_CONG_WESTWOOD=y
CONFIG_TCP_CONG_HTCP=y
CONFIG_TCP_CONG_HSTCP=y
# CONFIG_TCP_CONG_HYBLA is not set
CONFIG_TCP_CONG_VEGAS=y
CONFIG_TCP_CONG_SCALABLE=y
CONFIG_TCP_CONG_LP=y
CONFIG_TCP_CONG_VENO=y
CONFIG_TCP_CONG_YEAH=y
CONFIG_TCP_CONG_ILLINOIS=y
# CONFIG_DEFAULT_BIC is not set
# CONFIG_DEFAULT_CUBIC is not set
# CONFIG_DEFAULT_HTCP is not set
# CONFIG_DEFAULT_VEGAS is not set
# CONFIG_DEFAULT_WESTWOOD is not set
CONFIG_DEFAULT_RENO=y
CONFIG_DEFAULT_TCP_CONG="reno"
# CONFIG_TCP_MD5SIG is not set
# CONFIG_IPV6 is not set
# CONFIG_INET6_XFRM_TUNNEL is not set
# CONFIG_INET6_TUNNEL is not set
# CONFIG_NETLABEL is not set
CONFIG_NETWORK_SECMARK=y
# CONFIG_NETFILTER is not set
# CONFIG_IP_DCCP is not set
CONFIG_IP_SCTP=y
CONFIG_SCTP_DBG_MSG=y
# CONFIG_SCTP_DBG_OBJCNT is not set
# CONFIG_SCTP_HMAC_NONE is not set
CONFIG_SCTP_HMAC_SHA1=y
# CONFIG_SCTP_HMAC_MD5 is not set
# CONFIG_TIPC is not set
# CONFIG_ATM is not set
CONFIG_BRIDGE=y
CONFIG_VLAN_8021Q=y
CONFIG_DECNET=y
# CONFIG_DECNET_ROUTER is not set
CONFIG_LLC=y
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
CONFIG_X25=y
CONFIG_LAPB=y
CONFIG_ECONET=y
# CONFIG_ECONET_AUNUDP is not set
CONFIG_ECONET_NATIVE=y
# CONFIG_WAN_ROUTER is not set
CONFIG_NET_SCHED=y

#
# Queueing/Scheduling
#
# CONFIG_NET_SCH_CBQ is not set
CONFIG_NET_SCH_HTB=y
CONFIG_NET_SCH_HFSC=y
CONFIG_NET_SCH_PRIO=y
CONFIG_NET_SCH_RR=y
CONFIG_NET_SCH_RED=y
CONFIG_NET_SCH_SFQ=y
CONFIG_NET_SCH_TEQL=y
# CONFIG_NET_SCH_TBF is not set
CONFIG_NET_SCH_GRED=y
# CONFIG_NET_SCH_DSMARK is not set
# CONFIG_NET_SCH_NETEM is not set

#
# Classification
#
CONFIG_NET_CLS=y
CONFIG_NET_CLS_BASIC=y
CONFIG_NET_CLS_TCINDEX=y
CONFIG_NET_CLS_ROUTE4=y
CONFIG_NET_CLS_ROUTE=y
CONFIG_NET_CLS_FW=y
CONFIG_NET_CLS_U32=y
CONFIG_CLS_U32_PERF=y
CONFIG_CLS_U32_MARK=y
CONFIG_NET_CLS_RSVP=y
CONFIG_NET_CLS_RSVP6=y
# CONFIG_NET_CLS_FLOW is not set
# CONFIG_NET_EMATCH is not set
# CONFIG_NET_CLS_ACT is not set
# CONFIG_NET_CLS_IND is not set
CONFIG_NET_SCH_FIFO=y

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
CONFIG_HAMRADIO=y

#
# Packet Radio protocols
#
CONFIG_AX25=y
# CONFIG_AX25_DAMA_SLAVE is not set
CONFIG_NETROM=y
# CONFIG_ROSE is not set

#
# AX.25 network device drivers
#
CONFIG_MKISS=y
# CONFIG_6PACK is not set
# CONFIG_BPQETHER is not set
# CONFIG_BAYCOM_SER_FDX is not set
CONFIG_BAYCOM_SER_HDX=y
# CONFIG_YAM is not set
# CONFIG_CAN is not set
CONFIG_IRDA=y

#
# IrDA protocols
#
# CONFIG_IRLAN is not set
# CONFIG_IRNET is not set
CONFIG_IRCOMM=y
# CONFIG_IRDA_ULTRA is not set

#
# IrDA options
#
CONFIG_IRDA_CACHE_LAST_LSAP=y
CONFIG_IRDA_FAST_RR=y
# CONFIG_IRDA_DEBUG is not set

#
# Infrared-port device drivers
#

#
# SIR device drivers
#
CONFIG_IRTTY_SIR=y

#
# Dongle support
#
# CONFIG_DONGLE is not set
CONFIG_KINGSUN_DONGLE=y
# CONFIG_KSDAZZLE_DONGLE is not set
CONFIG_KS959_DONGLE=y

#
# FIR device drivers
#
# CONFIG_USB_IRDA is not set
# CONFIG_SIGMATEL_FIR is not set
# CONFIG_NSC_FIR is not set
# CONFIG_WINBOND_FIR is not set
# CONFIG_TOSHIBA_FIR is not set
CONFIG_SMC_IRCC_FIR=y
CONFIG_ALI_FIR=y
CONFIG_VLSI_FIR=y
CONFIG_VIA_FIR=y
# CONFIG_MCS_FIR is not set
CONFIG_BT=y
CONFIG_BT_L2CAP=y
# CONFIG_BT_SCO is not set
CONFIG_BT_RFCOMM=y
# CONFIG_BT_RFCOMM_TTY is not set
CONFIG_BT_BNEP=y
# CONFIG_BT_BNEP_MC_FILTER is not set
# CONFIG_BT_BNEP_PROTO_FILTER is not set
CONFIG_BT_HIDP=y

#
# Bluetooth device drivers
#
# CONFIG_BT_HCIUSB is not set
CONFIG_BT_HCIBTUSB=y
CONFIG_BT_HCIUART=y
CONFIG_BT_HCIUART_H4=y
# CONFIG_BT_HCIUART_BCSP is not set
CONFIG_BT_HCIUART_LL=y
# CONFIG_BT_HCIBCM203X is not set
CONFIG_BT_HCIBPA10X=y
CONFIG_BT_HCIBFUSB=y
# CONFIG_BT_HCIDTL1 is not set
CONFIG_BT_HCIBT3C=y
# CONFIG_BT_HCIBLUECARD is not set
CONFIG_BT_HCIBTUART=y
# CONFIG_BT_HCIVHCI is not set
CONFIG_AF_RXRPC=y
CONFIG_AF_RXRPC_DEBUG=y
CONFIG_RXKAD=y

#
# Wireless
#
CONFIG_CFG80211=y
# CONFIG_NL80211 is not set
CONFIG_WIRELESS_EXT=y
CONFIG_MAC80211=y

#
# Rate control algorithm selection
#
CONFIG_MAC80211_RC_DEFAULT_PID=y
# CONFIG_MAC80211_RC_DEFAULT_SIMPLE is not set
# CONFIG_MAC80211_RC_DEFAULT_NONE is not set

#
# Selecting 'y' for an algorithm will
#

#
# build the algorithm into mac80211.
#
CONFIG_MAC80211_RC_DEFAULT="pid"
CONFIG_MAC80211_RC_PID=y
CONFIG_MAC80211_RC_SIMPLE=y
# CONFIG_MAC80211_DEBUGFS is not set
CONFIG_MAC80211_DEBUG_PACKET_ALIGNMENT=y
# CONFIG_MAC80211_DEBUG is not set
CONFIG_IEEE80211=y
# CONFIG_IEEE80211_DEBUG is not set
CONFIG_IEEE80211_CRYPT_WEP=y
CONFIG_IEEE80211_CRYPT_CCMP=y
# CONFIG_IEEE80211_CRYPT_TKIP is not set
CONFIG_IEEE80211_SOFTMAC=y
# CONFIG_IEEE80211_SOFTMAC_DEBUG is not set
# CONFIG_RFKILL is not set
CONFIG_NET_9P=y
CONFIG_NET_9P_FD=y
# CONFIG_NET_9P_VIRTIO is not set
# CONFIG_NET_9P_DEBUG is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
# CONFIG_SYS_HYPERVISOR is not set
# CONFIG_CONNECTOR is not set
# CONFIG_MTD is not set
# CONFIG_PARPORT is not set
CONFIG_PNP=y
CONFIG_PNP_DEBUG=y

#
# Protocols
#
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
# CONFIG_BLK_DEV_FD is not set
CONFIG_BLK_CPQ_DA=y
CONFIG_BLK_CPQ_CISS_DA=y
# CONFIG_CISS_SCSI_TAPE is not set
# CONFIG_BLK_DEV_DAC960 is not set
CONFIG_BLK_DEV_UMEM=y
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=4096
CONFIG_BLK_DEV_XIP=y
# CONFIG_CDROM_PKTCDVD is not set
CONFIG_ATA_OVER_ETH=y
# CONFIG_VIRTIO_BLK is not set
# CONFIG_MISC_DEVICES is not set
CONFIG_HAVE_IDE=y
# CONFIG_IDE is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_TGT=y
CONFIG_SCSI_NETLINK=y
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
CONFIG_CHR_DEV_OSST=y
# CONFIG_BLK_DEV_SR is not set
# CONFIG_CHR_DEV_SG is not set
# CONFIG_CHR_DEV_SCH is not set

#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
CONFIG_SCSI_MULTI_LUN=y
# CONFIG_SCSI_CONSTANTS is not set
CONFIG_SCSI_LOGGING=y
# CONFIG_SCSI_SCAN_ASYNC is not set

#
# SCSI Transports
#
CONFIG_SCSI_SPI_ATTRS=y
CONFIG_SCSI_FC_ATTRS=y
# CONFIG_SCSI_FC_TGT_ATTRS is not set
CONFIG_SCSI_ISCSI_ATTRS=y
CONFIG_SCSI_SAS_ATTRS=y
CONFIG_SCSI_SAS_LIBSAS=y
CONFIG_SCSI_SAS_ATA=y
CONFIG_SCSI_SAS_HOST_SMP=y
CONFIG_SCSI_SAS_LIBSAS_DEBUG=y
# CONFIG_SCSI_SRP_ATTRS is not set
CONFIG_SCSI_LOWLEVEL=y
# CONFIG_ISCSI_TCP is not set
CONFIG_BLK_DEV_3W_XXXX_RAID=y
CONFIG_SCSI_3W_9XXX=y
# CONFIG_SCSI_ACARD is not set
# CONFIG_SCSI_AACRAID is not set
CONFIG_SCSI_AIC7XXX=y
CONFIG_AIC7XXX_CMDS_PER_DEVICE=32
CONFIG_AIC7XXX_RESET_DELAY_MS=5000
# CONFIG_AIC7XXX_DEBUG_ENABLE is not set
CONFIG_AIC7XXX_DEBUG_MASK=0
# CONFIG_AIC7XXX_REG_PRETTY_PRINT is not set
# CONFIG_SCSI_AIC7XXX_OLD is not set
# CONFIG_SCSI_AIC79XX is not set
# CONFIG_SCSI_AIC94XX is not set
CONFIG_SCSI_DPT_I2O=y
# CONFIG_SCSI_ADVANSYS is not set
CONFIG_SCSI_ARCMSR=y
# CONFIG_MEGARAID_NEWGEN is not set
CONFIG_MEGARAID_LEGACY=y
# CONFIG_MEGARAID_SAS is not set
CONFIG_SCSI_HPTIOP=y
# CONFIG_SCSI_BUSLOGIC is not set
CONFIG_SCSI_DMX3191D=y
# CONFIG_SCSI_EATA is not set
CONFIG_SCSI_FUTURE_DOMAIN=y
# CONFIG_SCSI_GDTH is not set
# CONFIG_SCSI_IPS is not set
CONFIG_SCSI_INITIO=y
CONFIG_SCSI_INIA100=y
# CONFIG_SCSI_MVSAS is not set
CONFIG_SCSI_STEX=y
CONFIG_SCSI_SYM53C8XX_2=y
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
CONFIG_SCSI_SYM53C8XX_MMIO=y
CONFIG_SCSI_IPR=y
# CONFIG_SCSI_IPR_TRACE is not set
# CONFIG_SCSI_IPR_DUMP is not set
CONFIG_SCSI_QLOGIC_1280=y
CONFIG_SCSI_QLA_FC=y
CONFIG_SCSI_QLA_ISCSI=y
CONFIG_SCSI_LPFC=y
CONFIG_SCSI_DC395x=y
CONFIG_SCSI_DC390T=y
CONFIG_SCSI_NSP32=y
# CONFIG_SCSI_DEBUG is not set
CONFIG_SCSI_SRP=y
# CONFIG_SCSI_LOWLEVEL_PCMCIA is not set
CONFIG_ATA=y
# CONFIG_ATA_NONSTANDARD is not set
CONFIG_ATA_ACPI=y
CONFIG_SATA_AHCI=y
# CONFIG_SATA_SVW is not set
CONFIG_ATA_PIIX=y
# CONFIG_SATA_MV is not set
# CONFIG_SATA_NV is not set
# CONFIG_PDC_ADMA is not set
# CONFIG_SATA_QSTOR is not set
# CONFIG_SATA_PROMISE is not set
# CONFIG_SATA_SX4 is not set
CONFIG_SATA_SIL=y
# CONFIG_SATA_SIL24 is not set
CONFIG_SATA_SIS=y
# CONFIG_SATA_ULI is not set
CONFIG_SATA_VIA=y
CONFIG_SATA_VITESSE=y
# CONFIG_SATA_INIC162X is not set
CONFIG_PATA_ACPI=y
# CONFIG_PATA_ALI is not set
CONFIG_PATA_AMD=y
CONFIG_PATA_ARTOP=y
# CONFIG_PATA_ATIIXP is not set
CONFIG_PATA_CMD640_PCI=y
# CONFIG_PATA_CMD64X is not set
# CONFIG_PATA_CS5520 is not set
# CONFIG_PATA_CS5530 is not set
CONFIG_PATA_CS5535=y
# CONFIG_PATA_CS5536 is not set
# CONFIG_PATA_CYPRESS is not set
CONFIG_PATA_EFAR=y
CONFIG_ATA_GENERIC=y
# CONFIG_PATA_HPT366 is not set
# CONFIG_PATA_HPT37X is not set
CONFIG_PATA_HPT3X2N=y
# CONFIG_PATA_HPT3X3 is not set
CONFIG_PATA_IT821X=y
CONFIG_PATA_IT8213=y
CONFIG_PATA_JMICRON=y
# CONFIG_PATA_TRIFLEX is not set
CONFIG_PATA_MARVELL=y
# CONFIG_PATA_MPIIX is not set
CONFIG_PATA_OLDPIIX=y
CONFIG_PATA_NETCELL=y
# CONFIG_PATA_NINJA32 is not set
CONFIG_PATA_NS87410=y
# CONFIG_PATA_NS87415 is not set
CONFIG_PATA_OPTI=y
# CONFIG_PATA_OPTIDMA is not set
# CONFIG_PATA_PCMCIA is not set
CONFIG_PATA_PDC_OLD=y
CONFIG_PATA_RADISYS=y
CONFIG_PATA_RZ1000=y
# CONFIG_PATA_SC1200 is not set
# CONFIG_PATA_SERVERWORKS is not set
CONFIG_PATA_PDC2027X=y
# CONFIG_PATA_SIL680 is not set
CONFIG_PATA_SIS=y
# CONFIG_PATA_VIA is not set
CONFIG_PATA_WINBOND=y
# CONFIG_MD is not set
# CONFIG_FUSION is not set

#
# IEEE 1394 (FireWire) support
#
CONFIG_FIREWIRE=y
CONFIG_FIREWIRE_OHCI=y
CONFIG_FIREWIRE_SBP2=y
# CONFIG_IEEE1394 is not set
CONFIG_I2O=y
# CONFIG_I2O_LCT_NOTIFY_ON_CHANGES is not set
# CONFIG_I2O_EXT_ADAPTEC is not set
# CONFIG_I2O_CONFIG is not set
CONFIG_I2O_BUS=y
# CONFIG_I2O_BLOCK is not set
CONFIG_I2O_SCSI=y
# CONFIG_I2O_PROC is not set
CONFIG_MACINTOSH_DRIVERS=y
# CONFIG_MAC_EMUMOUSEBTN is not set
CONFIG_NETDEVICES=y
# CONFIG_NETDEVICES_MULTIQUEUE is not set
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
CONFIG_MACVLAN=y
# CONFIG_EQUALIZER is not set
CONFIG_TUN=y
CONFIG_VETH=y
CONFIG_NET_SB1000=y
# CONFIG_ARCNET is not set
CONFIG_PHYLIB=y

#
# MII PHY device drivers
#
CONFIG_MARVELL_PHY=y
# CONFIG_DAVICOM_PHY is not set
# CONFIG_QSEMI_PHY is not set
# CONFIG_LXT_PHY is not set
# CONFIG_CICADA_PHY is not set
CONFIG_VITESSE_PHY=y
# CONFIG_SMSC_PHY is not set
CONFIG_BROADCOM_PHY=y
# CONFIG_ICPLUS_PHY is not set
# CONFIG_REALTEK_PHY is not set
# CONFIG_FIXED_PHY is not set
# CONFIG_MDIO_BITBANG is not set
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
CONFIG_HAPPYMEAL=y
CONFIG_SUNGEM=y
CONFIG_CASSINI=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_ENC28J60 is not set
CONFIG_NET_TULIP=y
# CONFIG_DE2104X is not set
# CONFIG_TULIP is not set
CONFIG_DE4X5=y
CONFIG_WINBOND_840=y
# CONFIG_DM9102 is not set
CONFIG_ULI526X=y
# CONFIG_HP100 is not set
# CONFIG_IBM_NEW_EMAC_ZMII is not set
# CONFIG_IBM_NEW_EMAC_RGMII is not set
# CONFIG_IBM_NEW_EMAC_TAH is not set
# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
CONFIG_NET_PCI=y
CONFIG_PCNET32=y
CONFIG_PCNET32_NAPI=y
# CONFIG_AMD8111_ETH is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_B44 is not set
CONFIG_FORCEDETH=y
# CONFIG_FORCEDETH_NAPI is not set
CONFIG_EEPRO100=y
CONFIG_E100=y
CONFIG_FEALNX=y
# CONFIG_NATSEMI is not set
CONFIG_NE2K_PCI=y
CONFIG_8139CP=y
CONFIG_8139TOO=y
CONFIG_8139TOO_PIO=y
# CONFIG_8139TOO_TUNE_TWISTER is not set
CONFIG_8139TOO_8129=y
# CONFIG_8139_OLD_RX_RESET is not set
CONFIG_R6040=y
CONFIG_SIS900=y
# CONFIG_EPIC100 is not set
CONFIG_SUNDANCE=y
# CONFIG_SUNDANCE_MMIO is not set
# CONFIG_TLAN is not set
CONFIG_VIA_RHINE=y
CONFIG_VIA_RHINE_MMIO=y
# CONFIG_VIA_RHINE_NAPI is not set
CONFIG_SC92031=y
CONFIG_NETDEV_1000=y
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
CONFIG_E1000=y
CONFIG_E1000_NAPI=y
CONFIG_E1000_DISABLE_PACKET_SPLIT=y
# CONFIG_E1000E is not set
# CONFIG_E1000E_ENABLED is not set
# CONFIG_IP1000 is not set
# CONFIG_IGB is not set
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
CONFIG_YELLOWFIN=y
# CONFIG_R8169 is not set
# CONFIG_SIS190 is not set
CONFIG_SKGE=y
CONFIG_SKGE_DEBUG=y
CONFIG_SKY2=y
# CONFIG_SKY2_DEBUG is not set
# CONFIG_SK98LIN is not set
# CONFIG_VIA_VELOCITY is not set
CONFIG_TIGON3=y
CONFIG_BNX2=y
# CONFIG_QLA3XXX is not set
# CONFIG_ATL1 is not set
# CONFIG_NETDEV_10000 is not set
CONFIG_TR=y
CONFIG_IBMOL=y
# CONFIG_IBMLS is not set
# CONFIG_3C359 is not set
CONFIG_TMS380TR=y
CONFIG_TMSPCI=y
CONFIG_ABYSS=y

#
# Wireless LAN
#
# CONFIG_WLAN_PRE80211 is not set
# CONFIG_WLAN_80211 is not set

#
# USB Network Adapters
#
CONFIG_USB_CATC=y
CONFIG_USB_KAWETH=y
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
CONFIG_USB_USBNET=y
# CONFIG_USB_NET_AX8817X is not set
CONFIG_USB_NET_CDCETHER=y
# CONFIG_USB_NET_DM9601 is not set
# CONFIG_USB_NET_GL620A is not set
CONFIG_USB_NET_NET1080=y
CONFIG_USB_NET_PLUSB=y
# CONFIG_USB_NET_MCS7830 is not set
# CONFIG_USB_NET_RNDIS_HOST is not set
# CONFIG_USB_NET_CDC_SUBSET is not set
# CONFIG_USB_NET_ZAURUS is not set
CONFIG_NET_PCMCIA=y
# CONFIG_PCMCIA_3C589 is not set
CONFIG_PCMCIA_3C574=y
CONFIG_PCMCIA_FMVJ18X=y
CONFIG_PCMCIA_PCNET=y
# CONFIG_PCMCIA_NMCLAN is not set
CONFIG_PCMCIA_SMC91C92=y
# CONFIG_PCMCIA_XIRC2PS is not set
CONFIG_PCMCIA_AXNET=y
CONFIG_PCMCIA_IBMTR=y
# CONFIG_WAN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
CONFIG_PPP=y
# CONFIG_PPP_MULTILINK is not set
CONFIG_PPP_FILTER=y
CONFIG_PPP_ASYNC=y
# CONFIG_PPP_SYNC_TTY is not set
CONFIG_PPP_DEFLATE=y
CONFIG_PPP_BSDCOMP=y
# CONFIG_PPP_MPPE is not set
CONFIG_PPPOE=y
# CONFIG_PPPOL2TP is not set
# CONFIG_SLIP is not set
CONFIG_SLHC=y
# CONFIG_NET_FC is not set
CONFIG_NETCONSOLE=y
# CONFIG_NETCONSOLE_DYNAMIC is not set
CONFIG_NETPOLL=y
# CONFIG_NETPOLL_TRAP is not set
CONFIG_NET_POLL_CONTROLLER=y
# CONFIG_VIRTIO_NET is not set
# CONFIG_ISDN is not set
CONFIG_PHONE=y
# CONFIG_PHONE_IXJ is not set

#
# Input device support
#
CONFIG_INPUT=y
CONFIG_INPUT_FF_MEMLESS=y
CONFIG_INPUT_POLLDEV=y

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_EVDEV is not set
CONFIG_INPUT_EVBUG=y

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
CONFIG_KEYBOARD_STOWAWAY=y
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
CONFIG_MOUSE_PS2_TOUCHKIT=y
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_APPLETOUCH is not set
CONFIG_MOUSE_VSXXXAA=y
CONFIG_INPUT_JOYSTICK=y
# CONFIG_JOYSTICK_ANALOG is not set
CONFIG_JOYSTICK_A3D=y
CONFIG_JOYSTICK_ADI=y
# CONFIG_JOYSTICK_COBRA is not set
CONFIG_JOYSTICK_GF2K=y
# CONFIG_JOYSTICK_GRIP is not set
# CONFIG_JOYSTICK_GRIP_MP is not set
CONFIG_JOYSTICK_GUILLEMOT=y
CONFIG_JOYSTICK_INTERACT=y
# CONFIG_JOYSTICK_SIDEWINDER is not set
# CONFIG_JOYSTICK_TMDC is not set
CONFIG_JOYSTICK_IFORCE=y
# CONFIG_JOYSTICK_IFORCE_USB is not set
# CONFIG_JOYSTICK_IFORCE_232 is not set
CONFIG_JOYSTICK_WARRIOR=y
# CONFIG_JOYSTICK_MAGELLAN is not set
# CONFIG_JOYSTICK_SPACEORB is not set
CONFIG_JOYSTICK_SPACEBALL=y
# CONFIG_JOYSTICK_STINGER is not set
CONFIG_JOYSTICK_TWIDJOY=y
CONFIG_JOYSTICK_JOYDUMP=y
# CONFIG_JOYSTICK_XPAD is not set
# CONFIG_INPUT_TABLET is not set
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=y
# CONFIG_TOUCHSCREEN_FUJITSU is not set
# CONFIG_TOUCHSCREEN_GUNZE is not set
# CONFIG_TOUCHSCREEN_ELO is not set
CONFIG_TOUCHSCREEN_MTOUCH=y
# CONFIG_TOUCHSCREEN_MK712 is not set
CONFIG_TOUCHSCREEN_PENMOUNT=y
CONFIG_TOUCHSCREEN_TOUCHRIGHT=y
CONFIG_TOUCHSCREEN_TOUCHWIN=y
CONFIG_TOUCHSCREEN_UCB1400=y
# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set
CONFIG_INPUT_MISC=y
# CONFIG_INPUT_PCSPKR is not set
# CONFIG_INPUT_APANEL is not set
# CONFIG_INPUT_WISTRON_BTNS is not set
# CONFIG_INPUT_ATLAS_BTNS is not set
CONFIG_INPUT_ATI_REMOTE=y
# CONFIG_INPUT_ATI_REMOTE2 is not set
# CONFIG_INPUT_KEYSPAN_REMOTE is not set
# CONFIG_INPUT_POWERMATE is not set
# CONFIG_INPUT_YEALINK is not set
# CONFIG_INPUT_UINPUT is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
# CONFIG_SERIO_SERPORT is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=y
CONFIG_GAMEPORT=y
# CONFIG_GAMEPORT_NS558 is not set
# CONFIG_GAMEPORT_L4 is not set
# CONFIG_GAMEPORT_EMU10K1 is not set
CONFIG_GAMEPORT_FM801=y

#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
# CONFIG_SERIAL_NONSTANDARD is not set
# CONFIG_NOZOMI is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=y
CONFIG_SERIAL_8250_PNP=y
# CONFIG_SERIAL_8250_CS is not set
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
# CONFIG_SERIAL_8250_SHARE_IRQ is not set
# CONFIG_SERIAL_8250_DETECT_IRQ is not set
CONFIG_SERIAL_8250_RSA=y

#
# Non-8250 serial port support
#
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
# CONFIG_LEGACY_PTYS is not set
CONFIG_IPMI_HANDLER=y
# CONFIG_IPMI_PANIC_EVENT is not set
# CONFIG_IPMI_DEVICE_INTERFACE is not set
# CONFIG_IPMI_SI is not set
# CONFIG_IPMI_WATCHDOG is not set
# CONFIG_IPMI_POWEROFF is not set
# CONFIG_HW_RANDOM is not set
# CONFIG_NVRAM is not set
# CONFIG_RTC is not set
# CONFIG_GEN_RTC is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set
# CONFIG_SONYPI is not set

#
# PCMCIA character devices
#
# CONFIG_SYNCLINK_CS is not set
CONFIG_CARDMAN_4000=y
# CONFIG_CARDMAN_4040 is not set
CONFIG_IPWIRELESS=y
# CONFIG_MWAVE is not set
# CONFIG_PC8736x_GPIO is not set
CONFIG_NSC_GPIO=y
CONFIG_CS5535_GPIO=y
CONFIG_RAW_DRIVER=y
CONFIG_MAX_RAW_DEVS=256
CONFIG_HPET=y
CONFIG_HPET_RTC_IRQ=y
# CONFIG_HPET_MMAP is not set
CONFIG_HANGCHECK_TIMER=y
CONFIG_TCG_TPM=y
CONFIG_TCG_TIS=y
CONFIG_TCG_NSC=y
CONFIG_TCG_ATMEL=y
# CONFIG_TCG_INFINEON is not set
# CONFIG_TELCLOCK is not set
CONFIG_DEVPORT=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
# CONFIG_I2C_CHARDEV is not set

#
# I2C Algorithms
#
CONFIG_I2C_ALGOBIT=y
CONFIG_I2C_ALGOPCF=y
CONFIG_I2C_ALGOPCA=y

#
# I2C Hardware Bus support
#
# CONFIG_I2C_ALI1535 is not set
# CONFIG_I2C_ALI1563 is not set
# CONFIG_I2C_ALI15X3 is not set
CONFIG_I2C_AMD756=y
# CONFIG_I2C_AMD756_S4882 is not set
# CONFIG_I2C_AMD8111 is not set
CONFIG_I2C_I801=y
CONFIG_I2C_I810=y
CONFIG_I2C_PIIX4=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_OCORES is not set
CONFIG_I2C_PARPORT_LIGHT=y
CONFIG_I2C_PROSAVAGE=y
# CONFIG_I2C_SAVAGE4 is not set
CONFIG_I2C_SIMTEC=y
CONFIG_SCx200_ACB=y
# CONFIG_I2C_SIS5595 is not set
# CONFIG_I2C_SIS630 is not set
CONFIG_I2C_SIS96X=y
# CONFIG_I2C_TAOS_EVM is not set
# CONFIG_I2C_TINY_USB is not set
# CONFIG_I2C_VIA is not set
CONFIG_I2C_VIAPRO=y
CONFIG_I2C_VOODOO3=y

#
# Miscellaneous I2C Chip support
#
CONFIG_DS1682=y
CONFIG_SENSORS_EEPROM=y
CONFIG_SENSORS_PCF8574=y
CONFIG_PCF8575=y
CONFIG_SENSORS_PCF8591=y
CONFIG_TPS65010=y
CONFIG_SENSORS_MAX6875=y
# CONFIG_SENSORS_TSL2550 is not set
CONFIG_I2C_DEBUG_CORE=y
CONFIG_I2C_DEBUG_ALGO=y
# CONFIG_I2C_DEBUG_BUS is not set
# CONFIG_I2C_DEBUG_CHIP is not set

#
# SPI support
#
CONFIG_SPI=y
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
CONFIG_SPI_BITBANG=y

#
# SPI Protocol Masters
#
# CONFIG_SPI_AT25 is not set
CONFIG_SPI_SPIDEV=y
CONFIG_SPI_TLE62X0=y
CONFIG_W1=y

#
# 1-wire Bus Masters
#
# CONFIG_W1_MASTER_MATROX is not set
CONFIG_W1_MASTER_DS2490=y
CONFIG_W1_MASTER_DS2482=y

#
# 1-wire Slaves
#
CONFIG_W1_SLAVE_THERM=y
CONFIG_W1_SLAVE_SMEM=y
# CONFIG_W1_SLAVE_DS2433 is not set
CONFIG_W1_SLAVE_DS2760=y
CONFIG_POWER_SUPPLY=y
CONFIG_POWER_SUPPLY_DEBUG=y
# CONFIG_PDA_POWER is not set
CONFIG_BATTERY_DS2760=y
# CONFIG_HWMON is not set
# CONFIG_THERMAL is not set
CONFIG_WATCHDOG=y
# CONFIG_WATCHDOG_NOWAYOUT is not set

#
# Watchdog Device Drivers
#
# CONFIG_SOFT_WATCHDOG is not set
CONFIG_ACQUIRE_WDT=y
CONFIG_ADVANTECH_WDT=y
CONFIG_ALIM1535_WDT=y
# CONFIG_ALIM7101_WDT is not set
# CONFIG_SC520_WDT is not set
# CONFIG_EUROTECH_WDT is not set
# CONFIG_IB700_WDT is not set
# CONFIG_IBMASR is not set
# CONFIG_WAFER_WDT is not set
# CONFIG_I6300ESB_WDT is not set
# CONFIG_ITCO_WDT is not set
CONFIG_IT8712F_WDT=y
# CONFIG_HP_WATCHDOG is not set
# CONFIG_SC1200_WDT is not set
CONFIG_PC87413_WDT=y
# CONFIG_60XX_WDT is not set
CONFIG_SBC8360_WDT=y
CONFIG_SBC7240_WDT=y
CONFIG_CPU5_WDT=y
# CONFIG_SMSC37B787_WDT is not set
# CONFIG_W83627HF_WDT is not set
CONFIG_W83697HF_WDT=y
CONFIG_W83877F_WDT=y
CONFIG_W83977F_WDT=y
# CONFIG_MACHZ_WDT is not set
CONFIG_SBC_EPX_C3_WATCHDOG=y

#
# PCI-based Watchdog Cards
#
# CONFIG_PCIPCWATCHDOG is not set
# CONFIG_WDTPCI is not set

#
# USB-based Watchdog Cards
#
# CONFIG_USBPCWATCHDOG is not set

#
# Sonics Silicon Backplane
#
CONFIG_SSB_POSSIBLE=y
CONFIG_SSB=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
# CONFIG_SSB_B43_PCI_BRIDGE is not set
CONFIG_SSB_PCMCIAHOST_POSSIBLE=y
# CONFIG_SSB_PCMCIAHOST is not set
CONFIG_SSB_DEBUG=y
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
# CONFIG_SSB_DRIVER_PCICORE is not set

#
# Multifunction device drivers
#
CONFIG_MFD_SM501=y

#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set
# CONFIG_DVB_CORE is not set
CONFIG_DAB=y
CONFIG_USB_DABUSB=y

#
# Graphics support
#
CONFIG_AGP=y
# CONFIG_AGP_ALI is not set
# CONFIG_AGP_ATI is not set
# CONFIG_AGP_AMD is not set
CONFIG_AGP_AMD64=y
CONFIG_AGP_INTEL=y
# CONFIG_AGP_NVIDIA is not set
CONFIG_AGP_SIS=y
# CONFIG_AGP_SWORKS is not set
CONFIG_AGP_VIA=y
# CONFIG_AGP_EFFICEON is not set
CONFIG_DRM=y
CONFIG_DRM_TDFX=y
# CONFIG_DRM_R128 is not set
CONFIG_DRM_RADEON=y
CONFIG_DRM_I810=y
CONFIG_DRM_I830=y
# CONFIG_DRM_I915 is not set
# CONFIG_DRM_MGA is not set
# CONFIG_DRM_SIS is not set
# CONFIG_DRM_VIA is not set
CONFIG_DRM_SAVAGE=y
CONFIG_VGASTATE=y
CONFIG_VIDEO_OUTPUT_CONTROL=y
CONFIG_FB=y
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set
CONFIG_FB_SYS_FILLRECT=y
CONFIG_FB_SYS_COPYAREA=y
CONFIG_FB_SYS_IMAGEBLIT=y
CONFIG_FB_SYS_FOPS=y
CONFIG_FB_DEFERRED_IO=y
CONFIG_FB_SVGALIB=y
# CONFIG_FB_MACMODES is not set
CONFIG_FB_BACKLIGHT=y
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y

#
# Frame buffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
CONFIG_FB_CYBER2000=y
# CONFIG_FB_ARC is not set
# CONFIG_FB_ASILIANT is not set
CONFIG_FB_IMSTT=y
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_VESA is not set
# CONFIG_FB_EFI is not set
CONFIG_FB_HECUBA=y
CONFIG_FB_HGA=y
# CONFIG_FB_HGA_ACCEL is not set
# CONFIG_FB_S1D13XXX is not set
CONFIG_FB_NVIDIA=y
# CONFIG_FB_NVIDIA_I2C is not set
# CONFIG_FB_NVIDIA_DEBUG is not set
# CONFIG_FB_NVIDIA_BACKLIGHT is not set
CONFIG_FB_RIVA=y
CONFIG_FB_RIVA_I2C=y
CONFIG_FB_RIVA_DEBUG=y
CONFIG_FB_RIVA_BACKLIGHT=y
CONFIG_FB_I810=y
CONFIG_FB_I810_GTF=y
# CONFIG_FB_I810_I2C is not set
# CONFIG_FB_LE80578 is not set
# CONFIG_FB_INTEL is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_RADEON is not set
CONFIG_FB_ATY128=y
CONFIG_FB_ATY128_BACKLIGHT=y
CONFIG_FB_ATY=y
CONFIG_FB_ATY_CT=y
CONFIG_FB_ATY_GENERIC_LCD=y
CONFIG_FB_ATY_GX=y
# CONFIG_FB_ATY_BACKLIGHT is not set
CONFIG_FB_S3=y
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
CONFIG_FB_KYRO=y
CONFIG_FB_3DFX=y
# CONFIG_FB_3DFX_ACCEL is not set
CONFIG_FB_VOODOO1=y
CONFIG_FB_VT8623=y
# CONFIG_FB_CYBLA is not set
# CONFIG_FB_TRIDENT is not set
# CONFIG_FB_ARK is not set
CONFIG_FB_PM3=y
# CONFIG_FB_GEODE is not set
# CONFIG_FB_SM501 is not set
# CONFIG_FB_VIRTUAL is not set
CONFIG_BACKLIGHT_LCD_SUPPORT=y
# CONFIG_LCD_CLASS_DEVICE is not set
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_CORGI=y
# CONFIG_BACKLIGHT_PROGEAR is not set

#
# Display device support
#
# CONFIG_DISPLAY_SUPPORT is not set

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
# CONFIG_VGACON_SOFT_SCROLLBACK is not set
# CONFIG_VIDEO_SELECT is not set
CONFIG_DUMMY_CONSOLE=y
# CONFIG_FRAMEBUFFER_CONSOLE is not set
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
# CONFIG_LOGO_LINUX_CLUT224 is not set

#
# Sound
#
CONFIG_SOUND=y

#
# Advanced Linux Sound Architecture
#
# CONFIG_SND is not set

#
# Open Sound System
#
# CONFIG_SOUND_PRIME is not set
CONFIG_AC97_BUS=y
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
# CONFIG_HID_DEBUG is not set
# CONFIG_HIDRAW is not set

#
# USB Input Devices
#
CONFIG_USB_HID=y
# CONFIG_USB_HIDINPUT_POWERBOOK is not set
CONFIG_HID_FF=y
# CONFIG_HID_PID is not set
# CONFIG_LOGITECH_FF is not set
CONFIG_PANTHERLORD_FF=y
CONFIG_THRUSTMASTER_FF=y
CONFIG_ZEROPLUS_FF=y
CONFIG_USB_HIDDEV=y
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y

#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_DYNAMIC_MINORS=y
CONFIG_USB_SUSPEND=y
# CONFIG_USB_PERSIST is not set
# CONFIG_USB_OTG is not set

#
# USB Host Controller Drivers
#
CONFIG_USB_EHCI_HCD=y
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
CONFIG_USB_EHCI_TT_NEWSCHED=y
# CONFIG_USB_ISP116X_HCD is not set
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_SSB=y
# CONFIG_USB_OHCI_BIG_ENDIAN_DESC is not set
# CONFIG_USB_OHCI_BIG_ENDIAN_MMIO is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_UHCI_HCD=y
CONFIG_USB_SL811_HCD=y
# CONFIG_USB_SL811_CS is not set
# CONFIG_USB_R8A66597_HCD is not set

#
# USB Device Class drivers
#
CONFIG_USB_ACM=y
# CONFIG_USB_PRINTER is not set

#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support'
#

#
# may also be needed; see USB_STORAGE Help for more information
#
# CONFIG_USB_STORAGE is not set
# CONFIG_USB_LIBUSUAL is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
CONFIG_USB_MICROTEK=y
# CONFIG_USB_MON is not set

#
# USB port drivers
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
CONFIG_USB_EMI62=y
CONFIG_USB_EMI26=y
# CONFIG_USB_ADUTUX is not set
CONFIG_USB_AUERSWALD=y
CONFIG_USB_RIO500=y
# CONFIG_USB_LEGOTOWER is not set
CONFIG_USB_LCD=y
CONFIG_USB_BERRY_CHARGE=y
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_PHIDGET is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_FTDI_ELAN is not set
CONFIG_USB_APPLEDISPLAY=y
# CONFIG_USB_SISUSBVGA is not set
CONFIG_USB_LD=y
# CONFIG_USB_TRANCEVIBRATOR is not set
# CONFIG_USB_IOWARRIOR is not set
CONFIG_USB_TEST=y
CONFIG_USB_GADGET=y
CONFIG_USB_GADGET_DEBUG_FILES=y
CONFIG_USB_GADGET_DEBUG_FS=y
CONFIG_USB_GADGET_SELECTED=y
# CONFIG_USB_GADGET_AMD5536UDC is not set
# CONFIG_USB_GADGET_ATMEL_USBA is not set
# CONFIG_USB_GADGET_FSL_USB2 is not set
# CONFIG_USB_GADGET_NET2280 is not set
# CONFIG_USB_GADGET_PXA2XX is not set
# CONFIG_USB_GADGET_M66592 is not set
CONFIG_USB_GADGET_GOKU=y
CONFIG_USB_GOKU=y
# CONFIG_USB_GADGET_LH7A40X is not set
# CONFIG_USB_GADGET_OMAP is not set
# CONFIG_USB_GADGET_S3C2410 is not set
# CONFIG_USB_GADGET_AT91 is not set
# CONFIG_USB_GADGET_DUMMY_HCD is not set
# CONFIG_USB_GADGET_DUALSPEED is not set
CONFIG_USB_ZERO=y
# CONFIG_USB_ETH is not set
# CONFIG_USB_GADGETFS is not set
# CONFIG_USB_FILE_STORAGE is not set
# CONFIG_USB_G_SERIAL is not set
# CONFIG_USB_MIDI_GADGET is not set
# CONFIG_USB_G_PRINTER is not set
# CONFIG_MMC is not set
# CONFIG_MEMSTICK is not set
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=y

#
# LED drivers
#
# CONFIG_LEDS_CLEVO_MAIL is not set

#
# LED Triggers
#
# CONFIG_LEDS_TRIGGERS is not set
# CONFIG_INFINIBAND is not set
CONFIG_EDAC=y

#
# Reporting subsystems
#
# CONFIG_EDAC_DEBUG is not set
# CONFIG_EDAC_MM_EDAC is not set
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
# CONFIG_RTC_DEBUG is not set

#
# RTC interfaces
#
CONFIG_RTC_INTF_SYSFS=y
# CONFIG_RTC_INTF_PROC is not set
# CONFIG_RTC_INTF_DEV is not set
# CONFIG_RTC_DRV_TEST is not set

#
# I2C RTC drivers
#
# CONFIG_RTC_DRV_DS1307 is not set
# CONFIG_RTC_DRV_DS1374 is not set
CONFIG_RTC_DRV_DS1672=y
# CONFIG_RTC_DRV_MAX6900 is not set
# CONFIG_RTC_DRV_RS5C372 is not set
CONFIG_RTC_DRV_ISL1208=y
# CONFIG_RTC_DRV_X1205 is not set
CONFIG_RTC_DRV_PCF8563=y
CONFIG_RTC_DRV_PCF8583=y
# CONFIG_RTC_DRV_M41T80 is not set
# CONFIG_RTC_DRV_S35390A is not set

#
# SPI RTC drivers
#
# CONFIG_RTC_DRV_MAX6902 is not set
# CONFIG_RTC_DRV_R9701 is not set
CONFIG_RTC_DRV_RS5C348=y

#
# Platform RTC drivers
#
CONFIG_RTC_DRV_CMOS=y
# CONFIG_RTC_DRV_DS1511 is not set
CONFIG_RTC_DRV_DS1553=y
CONFIG_RTC_DRV_DS1742=y
CONFIG_RTC_DRV_STK17TA8=y
CONFIG_RTC_DRV_M48T86=y
CONFIG_RTC_DRV_M48T59=y
# CONFIG_RTC_DRV_V3020 is not set

#
# on-CPU RTC drivers
#

#
# Userspace I/O
#
# CONFIG_UIO is not set

#
# Firmware Drivers
#
CONFIG_EDD=y
CONFIG_DELL_RBU=y
CONFIG_DCDBAS=y
CONFIG_DMIID=y

#
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
# CONFIG_EXT2_FS_POSIX_ACL is not set
CONFIG_EXT2_FS_SECURITY=y
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
# CONFIG_EXT4DEV_FS is not set
CONFIG_JBD=y
CONFIG_JBD_DEBUG=y
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
# CONFIG_GFS2_FS is not set
# CONFIG_OCFS2_FS is not set
# CONFIG_DNOTIFY is not set
CONFIG_INOTIFY=y
# CONFIG_INOTIFY_USER is not set
CONFIG_QUOTA=y
# CONFIG_QUOTA_NETLINK_INTERFACE is not set
CONFIG_PRINT_QUOTA_WARNING=y
CONFIG_QFMT_V1=y
CONFIG_QFMT_V2=y
CONFIG_QUOTACTL=y
CONFIG_AUTOFS_FS=y
# CONFIG_AUTOFS4_FS is not set
CONFIG_FUSE_FS=y

#
# CD-ROM/DVD Filesystems
#
# CONFIG_ISO9660_FS is not set
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
# CONFIG_MSDOS_FS is not set
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_VMCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_CONFIGFS_FS=y

#
# Miscellaneous filesystems
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_ECRYPT_FS is not set
CONFIG_HFS_FS=y
# CONFIG_HFSPLUS_FS is not set
CONFIG_BEFS_FS=y
# CONFIG_BEFS_DEBUG is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
CONFIG_CRAMFS=y
CONFIG_VXFS_FS=y
CONFIG_MINIX_FS=y
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
CONFIG_ROMFS_FS=y
CONFIG_SYSV_FS=y
# CONFIG_UFS_FS is not set
# CONFIG_NETWORK_FILESYSTEMS is not set

#
# Partition Types
#
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION is not set
# CONFIG_OSF_PARTITION is not set
# CONFIG_AMIGA_PARTITION is not set
CONFIG_ATARI_PARTITION=y
# CONFIG_MAC_PARTITION is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_BSD_DISKLABEL=y
# CONFIG_MINIX_SUBPARTITION is not set
CONFIG_SOLARIS_X86_PARTITION=y
# CONFIG_UNIXWARE_DISKLABEL is not set
# CONFIG_LDM_PARTITION is not set
CONFIG_SGI_PARTITION=y
CONFIG_ULTRIX_PARTITION=y
CONFIG_SUN_PARTITION=y
# CONFIG_KARMA_PARTITION is not set
# CONFIG_EFI_PARTITION is not set
# CONFIG_SYSV68_PARTITION is not set
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
CONFIG_NLS_CODEPAGE_737=y
CONFIG_NLS_CODEPAGE_775=y
CONFIG_NLS_CODEPAGE_850=y
CONFIG_NLS_CODEPAGE_852=y
CONFIG_NLS_CODEPAGE_855=y
# CONFIG_NLS_CODEPAGE_857 is not set
CONFIG_NLS_CODEPAGE_860=y
# CONFIG_NLS_CODEPAGE_861 is not set
CONFIG_NLS_CODEPAGE_862=y
CONFIG_NLS_CODEPAGE_863=y
# CONFIG_NLS_CODEPAGE_864 is not set
CONFIG_NLS_CODEPAGE_865=y
CONFIG_NLS_CODEPAGE_866=y
# CONFIG_NLS_CODEPAGE_869 is not set
CONFIG_NLS_CODEPAGE_936=y
CONFIG_NLS_CODEPAGE_950=y
CONFIG_NLS_CODEPAGE_932=y
# CONFIG_NLS_CODEPAGE_949 is not set
CONFIG_NLS_CODEPAGE_874=y
CONFIG_NLS_ISO8859_8=y
CONFIG_NLS_CODEPAGE_1250=y
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ASCII is not set
# CONFIG_NLS_ISO8859_1 is not set
CONFIG_NLS_ISO8859_2=y
CONFIG_NLS_ISO8859_3=y
CONFIG_NLS_ISO8859_4=y
CONFIG_NLS_ISO8859_5=y
CONFIG_NLS_ISO8859_6=y
CONFIG_NLS_ISO8859_7=y
CONFIG_NLS_ISO8859_9=y
# CONFIG_NLS_ISO8859_13 is not set
CONFIG_NLS_ISO8859_14=y
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
CONFIG_NLS_KOI8_U=y
CONFIG_NLS_UTF8=y
# CONFIG_DLM is not set

#
# Kernel hacking
#
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_ENABLE_WARN_DEPRECATED=y
# CONFIG_ENABLE_MUST_CHECK is not set
CONFIG_MAGIC_SYSRQ=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
# CONFIG_DEBUG_KERNEL is not set
CONFIG_DEBUG_BUGVERBOSE=y
# CONFIG_LATENCYTOP is not set
CONFIG_PROVIDE_OHCI1394_DMA_INIT=y
# CONFIG_SAMPLES is not set
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_NONPROMISC_DEVMEM=y
CONFIG_EARLY_PRINTK=y
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
CONFIG_DOUBLEFAULT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
# CONFIG_IO_DELAY_0X80 is not set
CONFIG_IO_DELAY_0XED=y
# CONFIG_IO_DELAY_UDELAY is not set
# CONFIG_IO_DELAY_NONE is not set
CONFIG_DEFAULT_IO_DELAY_TYPE=1
CONFIG_OPTIMIZE_INLINING=y

#
# Security options
#
CONFIG_KEYS=y
CONFIG_KEYS_DEBUG_PROC_KEYS=y
CONFIG_SECURITY=y
# CONFIG_SECURITY_NETWORK is not set
CONFIG_SECURITY_CAPABILITIES=y
CONFIG_SECURITY_FILE_CAPABILITIES=y
# CONFIG_SECURITY_ROOTPLUG is not set
CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_SEQIV=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_HMAC=y
# CONFIG_CRYPTO_XCBC is not set
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
# CONFIG_CRYPTO_WP512 is not set
CONFIG_CRYPTO_TGR192=y
CONFIG_CRYPTO_GF128MUL=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_PCBC=y
CONFIG_CRYPTO_LRW=y
# CONFIG_CRYPTO_XTS is not set
CONFIG_CRYPTO_CTR=y
# CONFIG_CRYPTO_GCM is not set
CONFIG_CRYPTO_CCM=y
# CONFIG_CRYPTO_CRYPTD is not set
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_FCRYPT=y
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_TWOFISH_COMMON=y
CONFIG_CRYPTO_TWOFISH_586=y
CONFIG_CRYPTO_SERPENT=y
CONFIG_CRYPTO_AES=y
# CONFIG_CRYPTO_AES_586 is not set
# CONFIG_CRYPTO_CAST5 is not set
CONFIG_CRYPTO_CAST6=y
# CONFIG_CRYPTO_TEA is not set
CONFIG_CRYPTO_ARC4=y
# CONFIG_CRYPTO_KHAZAD is not set
CONFIG_CRYPTO_ANUBIS=y
# CONFIG_CRYPTO_SEED is not set
CONFIG_CRYPTO_SALSA20=y
# CONFIG_CRYPTO_SALSA20_586 is not set
CONFIG_CRYPTO_DEFLATE=y
# CONFIG_CRYPTO_MICHAEL_MIC is not set
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_CAMELLIA is not set
CONFIG_CRYPTO_AUTHENC=y
# CONFIG_CRYPTO_LZO is not set
# CONFIG_CRYPTO_HW is not set
CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
CONFIG_KVM=y
CONFIG_KVM_INTEL=y
# CONFIG_KVM_AMD is not set
CONFIG_VIRTIO=y
CONFIG_VIRTIO_RING=y
# CONFIG_VIRTIO_PCI is not set
CONFIG_VIRTIO_BALLOON=y

#
# Library routines
#
CONFIG_BITREVERSE=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=y
CONFIG_CRC_ITU_T=y
CONFIG_CRC32=y
# CONFIG_CRC7 is not set
CONFIG_LIBCRC32C=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_CHECK_SIGNATURE=y

[-- Attachment #3: Type: text/plain, Size: 278 bytes --]

-------------------------------------------------------------------------
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Re: [PATCH 0/20] dma_ops for i386

[Ingo Molnar]

* Ingo Molnar <mingo@elte.hu> wrote:

> what i came up is the prototype 32-bit fix below - this works on 
> 32-bit but breaks 64-bit because we pass in physical addresses instead 
> of virtual direct addresses.
> 
> i'll fix the 64-bit side but that means materially touching all the 
> dma_mapping_ops instantiations materially on the 64-bit side - not 
> really something we wanted to do :-/

the full fix ended up being the one below. It's not that bad - and 
gart_64.c looks even a bit cleaner. Still, it needs careful review.

	Ingo

--------------->
Subject: x86: dma-ops on highmem fix
From: Ingo Molnar <mingo@elte.hu>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/x86/kernel/pci-base_32.c    |    4 ++--
 arch/x86/kernel/pci-calgary_64.c |    3 ++-
 arch/x86/kernel/pci-dma_64.c     |    2 +-
 arch/x86/kernel/pci-gart_64.c    |   15 +++++++--------
 arch/x86/kernel/pci-nommu_64.c   |    4 ++--
 arch/x86/kernel/pci-swiotlb_64.c |    9 ++++++++-
 include/asm-x86/dma-mapping.h    |   10 ++++++----
 7 files changed, 28 insertions(+), 19 deletions(-)

Index: linux-x86.q/arch/x86/kernel/pci-base_32.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-base_32.c
+++ linux-x86.q/arch/x86/kernel/pci-base_32.c
@@ -4,12 +4,12 @@
 #include <linux/dma-mapping.h>
 #include <asm/dma-mapping.h>
 
-static dma_addr_t pci32_map_single(struct device *dev, void *ptr,
+static dma_addr_t pci32_map_single(struct device *dev, phys_addr_t ptr,
 				   size_t size, int direction)
 {
 	WARN_ON(size == 0);
 	flush_write_buffers();
-	return virt_to_phys(ptr);
+	return ptr;
 }
 
 static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
Index: linux-x86.q/arch/x86/kernel/pci-calgary_64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-calgary_64.c
+++ linux-x86.q/arch/x86/kernel/pci-calgary_64.c
@@ -470,10 +470,11 @@ error:
 	return 0;
 }
 
-static dma_addr_t calgary_map_single(struct device *dev, void *vaddr,
+static dma_addr_t calgary_map_single(struct device *dev, phys_addr_t paddr,
 	size_t size, int direction)
 {
 	dma_addr_t dma_handle = bad_dma_address;
+	void *vaddr = phys_to_virt(paddr);
 	unsigned long uaddr;
 	unsigned int npages;
 	struct iommu_table *tbl = find_iommu_table(dev);
Index: linux-x86.q/arch/x86/kernel/pci-dma_64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-dma_64.c
+++ linux-x86.q/arch/x86/kernel/pci-dma_64.c
@@ -141,7 +141,7 @@ dma_alloc_coherent(struct device *dev, s
 	}
 
 	if (dma_ops->map_simple) {
-		*dma_handle = dma_ops->map_simple(dev, memory,
+		*dma_handle = dma_ops->map_simple(dev, virt_to_phys(memory),
 					      size,
 					      PCI_DMA_BIDIRECTIONAL);
 		if (*dma_handle != bad_dma_address)
Index: linux-x86.q/arch/x86/kernel/pci-gart_64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-gart_64.c
+++ linux-x86.q/arch/x86/kernel/pci-gart_64.c
@@ -264,9 +264,9 @@ static dma_addr_t dma_map_area(struct de
 }
 
 static dma_addr_t
-gart_map_simple(struct device *dev, char *buf, size_t size, int dir)
+gart_map_simple(struct device *dev, phys_addr_t paddr, size_t size, int dir)
 {
-	dma_addr_t map = dma_map_area(dev, virt_to_bus(buf), size, dir);
+	dma_addr_t map = dma_map_area(dev, paddr, size, dir);
 
 	flush_gart();
 
@@ -275,18 +275,17 @@ gart_map_simple(struct device *dev, char
 
 /* Map a single area into the IOMMU */
 static dma_addr_t
-gart_map_single(struct device *dev, void *addr, size_t size, int dir)
+gart_map_single(struct device *dev, phys_addr_t paddr, size_t size, int dir)
 {
-	unsigned long phys_mem, bus;
+	unsigned long bus;
 
 	if (!dev)
 		dev = &fallback_dev;
 
-	phys_mem = virt_to_phys(addr);
-	if (!need_iommu(dev, phys_mem, size))
-		return phys_mem;
+	if (!need_iommu(dev, paddr, size))
+		return paddr;
 
-	bus = gart_map_simple(dev, addr, size, dir);
+	bus = gart_map_simple(dev, paddr, size, dir);
 
 	return bus;
 }
Index: linux-x86.q/arch/x86/kernel/pci-nommu_64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-nommu_64.c
+++ linux-x86.q/arch/x86/kernel/pci-nommu_64.c
@@ -26,10 +26,10 @@ check_addr(char *name, struct device *hw
 }
 
 static dma_addr_t
-nommu_map_single(struct device *hwdev, void *ptr, size_t size,
+nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size,
 	       int direction)
 {
-	dma_addr_t bus = virt_to_bus(ptr);
+	dma_addr_t bus = paddr;
 	if (!check_addr("map_single", hwdev, bus, size))
 				return bad_dma_address;
 	return bus;
Index: linux-x86.q/arch/x86/kernel/pci-swiotlb_64.c
===================================================================
--- linux-x86.q.orig/arch/x86/kernel/pci-swiotlb_64.c
+++ linux-x86.q/arch/x86/kernel/pci-swiotlb_64.c
@@ -11,11 +11,18 @@
 
 int swiotlb __read_mostly;
 
+static dma_addr_t
+swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
+			int direction)
+{
+	return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction);
+}
+
 const struct dma_mapping_ops swiotlb_dma_ops = {
 	.mapping_error = swiotlb_dma_mapping_error,
 	.alloc_coherent = swiotlb_alloc_coherent,
 	.free_coherent = swiotlb_free_coherent,
-	.map_single = swiotlb_map_single,
+	.map_single = swiotlb_map_single_phys,
 	.unmap_single = swiotlb_unmap_single,
 	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
 	.sync_single_for_device = swiotlb_sync_single_for_device,
Index: linux-x86.q/include/asm-x86/dma-mapping.h
===================================================================
--- linux-x86.q.orig/include/asm-x86/dma-mapping.h
+++ linux-x86.q/include/asm-x86/dma-mapping.h
@@ -16,10 +16,10 @@ struct dma_mapping_ops {
 				dma_addr_t *dma_handle, gfp_t gfp);
 	void            (*free_coherent)(struct device *dev, size_t size,
 				void *vaddr, dma_addr_t dma_handle);
-	dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
+	dma_addr_t      (*map_single)(struct device *hwdev, phys_addr_t ptr,
 				size_t size, int direction);
 	/* like map_single, but doesn't check the device mask */
-	dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
+	dma_addr_t      (*map_simple)(struct device *hwdev, phys_addr_t ptr,
 				size_t size, int direction);
 	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
 				size_t size, int direction);
@@ -73,7 +73,7 @@ dma_map_single(struct device *hwdev, voi
 	       int direction)
 {
 	BUG_ON(!valid_dma_direction(direction));
-	return dma_ops->map_single(hwdev, ptr, size, direction);
+	return dma_ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
 }
 
 static inline void
@@ -174,7 +174,9 @@ static inline dma_addr_t dma_map_page(st
 				      size_t offset, size_t size,
 				      int direction)
 {
-	return dma_map_single(dev, page_address(page)+offset, size, direction);
+	BUG_ON(!valid_dma_direction(direction));
+	return dma_ops->map_single(dev, page_to_phys(page)+offset,
+				   size, direction);
 }
 
 static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,

Re: [PATCH 0/20] dma_ops for i386

[Glauber Costa]

Ingo Molnar wrote:
> * Ingo Molnar <mingo@elte.hu> wrote:
> 
>> what i came up is the prototype 32-bit fix below - this works on 
>> 32-bit but breaks 64-bit because we pass in physical addresses instead 
>> of virtual direct addresses.
>>
>> i'll fix the 64-bit side but that means materially touching all the 
>> dma_mapping_ops instantiations materially on the 64-bit side - not 
>> really something we wanted to do :-/
> 
> the full fix ended up being the one below. It's not that bad - and 
> gart_64.c looks even a bit cleaner. Still, it needs careful review.
> 
> 	Ingo
> 
> --------------->
> Subject: x86: dma-ops on highmem fix
> From: Ingo Molnar <mingo@elte.hu>
> 
> Signed-off-by: Ingo Molnar <mingo@elte.hu>
> ---
>  arch/x86/kernel/pci-base_32.c    |    4 ++--
>  arch/x86/kernel/pci-calgary_64.c |    3 ++-
>  arch/x86/kernel/pci-dma_64.c     |    2 +-
>  arch/x86/kernel/pci-gart_64.c    |   15 +++++++--------
>  arch/x86/kernel/pci-nommu_64.c   |    4 ++--
>  arch/x86/kernel/pci-swiotlb_64.c |    9 ++++++++-
>  include/asm-x86/dma-mapping.h    |   10 ++++++----
>  7 files changed, 28 insertions(+), 19 deletions(-)
> 
> Index: linux-x86.q/arch/x86/kernel/pci-base_32.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/pci-base_32.c
> +++ linux-x86.q/arch/x86/kernel/pci-base_32.c
> @@ -4,12 +4,12 @@
>  #include <linux/dma-mapping.h>
>  #include <asm/dma-mapping.h>
>  
> -static dma_addr_t pci32_map_single(struct device *dev, void *ptr,
> +static dma_addr_t pci32_map_single(struct device *dev, phys_addr_t ptr,
>  				   size_t size, int direction)
>  {
>  	WARN_ON(size == 0);
>  	flush_write_buffers();
> -	return virt_to_phys(ptr);
> +	return ptr;
>  }
>  
>  static int pci32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
> Index: linux-x86.q/arch/x86/kernel/pci-calgary_64.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/pci-calgary_64.c
> +++ linux-x86.q/arch/x86/kernel/pci-calgary_64.c
> @@ -470,10 +470,11 @@ error:
>  	return 0;
>  }
>  
> -static dma_addr_t calgary_map_single(struct device *dev, void *vaddr,
> +static dma_addr_t calgary_map_single(struct device *dev, phys_addr_t paddr,
>  	size_t size, int direction)
>  {
>  	dma_addr_t dma_handle = bad_dma_address;
> +	void *vaddr = phys_to_virt(paddr);
>  	unsigned long uaddr;
>  	unsigned int npages;
>  	struct iommu_table *tbl = find_iommu_table(dev);
> Index: linux-x86.q/arch/x86/kernel/pci-dma_64.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/pci-dma_64.c
> +++ linux-x86.q/arch/x86/kernel/pci-dma_64.c
> @@ -141,7 +141,7 @@ dma_alloc_coherent(struct device *dev, s
>  	}
>  
>  	if (dma_ops->map_simple) {
> -		*dma_handle = dma_ops->map_simple(dev, memory,
> +		*dma_handle = dma_ops->map_simple(dev, virt_to_phys(memory),
>  					      size,
>  					      PCI_DMA_BIDIRECTIONAL);
>  		if (*dma_handle != bad_dma_address)
> Index: linux-x86.q/arch/x86/kernel/pci-gart_64.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/pci-gart_64.c
> +++ linux-x86.q/arch/x86/kernel/pci-gart_64.c
> @@ -264,9 +264,9 @@ static dma_addr_t dma_map_area(struct de
>  }
>  
>  static dma_addr_t
> -gart_map_simple(struct device *dev, char *buf, size_t size, int dir)
> +gart_map_simple(struct device *dev, phys_addr_t paddr, size_t size, int dir)
>  {
> -	dma_addr_t map = dma_map_area(dev, virt_to_bus(buf), size, dir);
> +	dma_addr_t map = dma_map_area(dev, paddr, size, dir);
>  
>  	flush_gart();
>  
> @@ -275,18 +275,17 @@ gart_map_simple(struct device *dev, char
>  
>  /* Map a single area into the IOMMU */
>  static dma_addr_t
> -gart_map_single(struct device *dev, void *addr, size_t size, int dir)
> +gart_map_single(struct device *dev, phys_addr_t paddr, size_t size, int dir)
>  {
> -	unsigned long phys_mem, bus;
> +	unsigned long bus;
>  
>  	if (!dev)
>  		dev = &fallback_dev;
>  
> -	phys_mem = virt_to_phys(addr);
> -	if (!need_iommu(dev, phys_mem, size))
> -		return phys_mem;
> +	if (!need_iommu(dev, paddr, size))
> +		return paddr;
>  
> -	bus = gart_map_simple(dev, addr, size, dir);
> +	bus = gart_map_simple(dev, paddr, size, dir);
>  
>  	return bus;
>  }
> Index: linux-x86.q/arch/x86/kernel/pci-nommu_64.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/pci-nommu_64.c
> +++ linux-x86.q/arch/x86/kernel/pci-nommu_64.c
> @@ -26,10 +26,10 @@ check_addr(char *name, struct device *hw
>  }
>  
>  static dma_addr_t
> -nommu_map_single(struct device *hwdev, void *ptr, size_t size,
> +nommu_map_single(struct device *hwdev, phys_addr_t paddr, size_t size,
>  	       int direction)
>  {
> -	dma_addr_t bus = virt_to_bus(ptr);
> +	dma_addr_t bus = paddr;
>  	if (!check_addr("map_single", hwdev, bus, size))
>  				return bad_dma_address;
>  	return bus;
> Index: linux-x86.q/arch/x86/kernel/pci-swiotlb_64.c
> ===================================================================
> --- linux-x86.q.orig/arch/x86/kernel/pci-swiotlb_64.c
> +++ linux-x86.q/arch/x86/kernel/pci-swiotlb_64.c
> @@ -11,11 +11,18 @@
>  
>  int swiotlb __read_mostly;
>  
> +static dma_addr_t
> +swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
> +			int direction)
> +{
> +	return swiotlb_map_single(hwdev, phys_to_virt(paddr), size, direction);
> +}
> +
>  const struct dma_mapping_ops swiotlb_dma_ops = {
>  	.mapping_error = swiotlb_dma_mapping_error,
>  	.alloc_coherent = swiotlb_alloc_coherent,
>  	.free_coherent = swiotlb_free_coherent,
> -	.map_single = swiotlb_map_single,
> +	.map_single = swiotlb_map_single_phys,
>  	.unmap_single = swiotlb_unmap_single,
>  	.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
>  	.sync_single_for_device = swiotlb_sync_single_for_device,
> Index: linux-x86.q/include/asm-x86/dma-mapping.h
> ===================================================================
> --- linux-x86.q.orig/include/asm-x86/dma-mapping.h
> +++ linux-x86.q/include/asm-x86/dma-mapping.h
> @@ -16,10 +16,10 @@ struct dma_mapping_ops {
>  				dma_addr_t *dma_handle, gfp_t gfp);
>  	void            (*free_coherent)(struct device *dev, size_t size,
>  				void *vaddr, dma_addr_t dma_handle);
> -	dma_addr_t      (*map_single)(struct device *hwdev, void *ptr,
> +	dma_addr_t      (*map_single)(struct device *hwdev, phys_addr_t ptr,
>  				size_t size, int direction);
>  	/* like map_single, but doesn't check the device mask */
> -	dma_addr_t      (*map_simple)(struct device *hwdev, char *ptr,
> +	dma_addr_t      (*map_simple)(struct device *hwdev, phys_addr_t ptr,
>  				size_t size, int direction);
>  	void            (*unmap_single)(struct device *dev, dma_addr_t addr,
>  				size_t size, int direction);
> @@ -73,7 +73,7 @@ dma_map_single(struct device *hwdev, voi
>  	       int direction)
>  {
>  	BUG_ON(!valid_dma_direction(direction));
> -	return dma_ops->map_single(hwdev, ptr, size, direction);
> +	return dma_ops->map_single(hwdev, virt_to_phys(ptr), size, direction);
>  }
>  
>  static inline void
> @@ -174,7 +174,9 @@ static inline dma_addr_t dma_map_page(st
>  				      size_t offset, size_t size,
>  				      int direction)
>  {
> -	return dma_map_single(dev, page_address(page)+offset, size, direction);
> +	BUG_ON(!valid_dma_direction(direction));
> +	return dma_ops->map_single(dev, page_to_phys(page)+offset,
> +				   size, direction);
>  }
>  
>  static inline void dma_unmap_page(struct device *dev, dma_addr_t addr,
It looks all good to me.
I'll give a shot in my systems to see if it goes okay.

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Re: [PATCH 0/20] dma_ops for i386

[Avi Kivity]

Glauber Costa wrote:
> Hello,
>
> Here there is a series of 20 patches that lays the foundations for
> using dma_ops in i386 in the very same way x86_64, as well as many other
> architectures already do.
>
> The functions themselves for i386 are placed in a pci-base_32.c, but just
> a few among them are actually implemented. Most were no-ops anyway.
>
>   

I see the headers are unified, but the .c files are duplicated.  I 
presume unifying the implementation is deferred to later patches?


> The motivation for that is the ongoing work for pci-passthrough in KVM.
> So ingo, avi, what do you think it's the best way to handle these patches through?
>   

x86.git.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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Re: [PATCH 0/20] dma_ops for i386

[Glauber Costa]

Avi Kivity wrote:
> Glauber Costa wrote:
>> Hello,
>>
>> Here there is a series of 20 patches that lays the foundations for
>> using dma_ops in i386 in the very same way x86_64, as well as many other
>> architectures already do.
>>
>> The functions themselves for i386 are placed in a pci-base_32.c, but just
>> a few among them are actually implemented. Most were no-ops anyway.
>>
>>   
> 
> I see the headers are unified, but the .c files are duplicated.  I 
> presume unifying the implementation is deferred to later patches?
presume correctly.


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Re: [PATCH 0/20] dma_ops for i386

[Amit Shah]

* On Wednesday 26 March 2008 03:06:19 Glauber Costa wrote:
> Hello,
>
> Here there is a series of 20 patches that lays the foundations for
> using dma_ops in i386 in the very same way x86_64, as well as many other
> architectures already do.

Thanks; Please also see Stephen Tweedie's tree at

http://git.et.redhat.com/?p=linux-2.6-dom0-pvops.git;a=summary

I guess your work would be overlapped anyway, but just to make sure there's no 
double work.

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