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Date: Tue, 25 Mar 2008 18:36:34 -0300
From: Glauber Costa <gcosta@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: akpm@...ux-foundation.org, glommer@...il.com, mingo@...e.hu,
tglx@...utronix.de, kvm-devel@...ts.sourceforge.net,
avi@...ranet.com, amit.shah@...ranet.com
Subject: [PATCH 15/20] x86: move dma_supported and dma_set_mask to pci-dma_32.c
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@...hat.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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