From d7c4f1b78afeedfc22b1756fcdc1acbe84284d74 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 13 May 2009 22:56:31 +0000
Subject: asm-generic: make pci.h usable directly
Some generic code is using the horribly misnamed PCI_DMA_BUS_IS_PHYS
from asm/pci.h. This makes sure that an architecture without PCI
support does not have to define this itself but can rely on the
asm-generic version.
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/frv/include/asm/pci.h | 13 +++----------
arch/m32r/include/asm/pci.h | 2 --
include/asm-generic/pci.h | 8 ++++++++
3 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/arch/frv/include/asm/pci.h b/arch/frv/include/asm/pci.h
index 585d9b49949a..3ce227ba7744 100644
--- a/arch/frv/include/asm/pci.h
+++ b/arch/frv/include/asm/pci.h
@@ -10,8 +10,8 @@
* 2 of the License, or (at your option) any later version.
*/
-#ifndef ASM_PCI_H
-#define ASM_PCI_H
+#ifndef _ASM_FRV_PCI_H
+#define _ASM_FRV_PCI_H
#include <linux/mm.h>
#include <asm/scatterlist.h>
@@ -43,12 +43,6 @@ extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
/* Return the index of the PCI controller for device PDEV. */
#define pci_controller_num(PDEV) (0)
-/* The PCI address space does equal the physical memory
- * address space. The networking and block device layers use
- * this boolean for bounce buffer decisions.
- */
-#define PCI_DMA_BUS_IS_PHYS (1)
-
/* pci_unmap_{page,single} is a nop so... */
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
@@ -114,5 +108,4 @@ static inline void pci_dma_sync_sg(struct pci_dev *hwdev,
sg_dma_address(&sg[i])+sg_dma_len(&sg[i]));
}
-
-#endif
+#endif /* _ASM_FRV_PCI_H */
diff --git a/arch/m32r/include/asm/pci.h b/arch/m32r/include/asm/pci.h
index fe785d167db6..07d3834c6dec 100644
--- a/arch/m32r/include/asm/pci.h
+++ b/arch/m32r/include/asm/pci.h
@@ -3,6 +3,4 @@
#include <asm-generic/pci.h>
-#define PCI_DMA_BUS_IS_PHYS (1)
-
#endif /* _ASM_M32R_PCI_H */
diff --git a/include/asm-generic/pci.h b/include/asm-generic/pci.h
index c36a77d3bf44..515c6e2e3218 100644
--- a/include/asm-generic/pci.h
+++ b/include/asm-generic/pci.h
@@ -52,4 +52,12 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
}
#endif /* HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ */
+/*
+ * By default, assume that no iommu is in use and that the PCI
+ * space is mapped to address physical 0.
+ */
+#ifndef PCI_DMA_BUS_IS_PHYS
+#define PCI_DMA_BUS_IS_PHYS (1)
#endif
+
+#endif /* _ASM_GENERIC_PCI_H */
--
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