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authorJan Beulich <jbeulich@novell.com>2007-07-09 11:55:51 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2007-07-11 16:02:11 -0700
commitcaa5171622c8fef70fa20d2d74f4326866039df9 (patch)
treeeee98d71a3d57db4fcadd6bcca2612b64c367083 /arch
parentb7b095c154c50ee753832bbf78e8690c492fc8f6 (diff)
downloadop-kernel-dev-caa5171622c8fef70fa20d2d74f4326866039df9.zip
op-kernel-dev-caa5171622c8fef70fa20d2d74f4326866039df9.tar.gz
PCI: remove pci_dac_dma_... APIs
Based on replies to a respective query, remove the pci_dac_dma_...() APIs (except for pci_dac_dma_supported() on Alpha, where this function is used in non-DAC PCI DMA code). Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: Andi Kleen <ak@suse.de> Cc: Jesse Barnes <jesse.barnes@intel.com> Cc: Christoph Hellwig <hch@infradead.org> Acked-by: David Miller <davem@davemloft.net> Cc: Jeff Garzik <jeff@garzik.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/alpha/kernel/pci_iommu.c32
-rw-r--r--arch/mips/pci/Makefile2
-rw-r--r--arch/mips/pci/pci-dac.c79
-rw-r--r--arch/x86_64/kernel/pci-dma.c3
4 files changed, 7 insertions, 109 deletions
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index 28c84e5..6b07f89 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -207,6 +207,10 @@ iommu_arena_free(struct pci_iommu_arena *arena, long ofs, long n)
p[i] = 0;
}
+/* True if the machine supports DAC addressing, and DEV can
+ make use of it given MASK. */
+static int pci_dac_dma_supported(struct pci_dev *hwdev, u64 mask);
+
/* Map a single buffer of the indicated size for PCI DMA in streaming
mode. The 32-bit PCI bus mastering address to use is returned.
Once the device is given the dma address, the device owns this memory
@@ -897,7 +901,7 @@ iommu_unbind(struct pci_iommu_arena *arena, long pg_start, long pg_count)
/* True if the machine supports DAC addressing, and DEV can
make use of it given MASK. */
-int
+static int
pci_dac_dma_supported(struct pci_dev *dev, u64 mask)
{
dma64_addr_t dac_offset = alpha_mv.pci_dac_offset;
@@ -917,32 +921,6 @@ pci_dac_dma_supported(struct pci_dev *dev, u64 mask)
return ok;
}
-EXPORT_SYMBOL(pci_dac_dma_supported);
-
-dma64_addr_t
-pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page,
- unsigned long offset, int direction)
-{
- return (alpha_mv.pci_dac_offset
- + __pa(page_address(page))
- + (dma64_addr_t) offset);
-}
-EXPORT_SYMBOL(pci_dac_page_to_dma);
-
-struct page *
-pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- unsigned long paddr = (dma_addr & PAGE_MASK) - alpha_mv.pci_dac_offset;
- return virt_to_page(__va(paddr));
-}
-EXPORT_SYMBOL(pci_dac_dma_to_page);
-
-unsigned long
-pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return (dma_addr & ~PAGE_MASK);
-}
-EXPORT_SYMBOL(pci_dac_dma_to_offset);
/* Helper for generic DMA-mapping functions. */
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
index f26ede0..c58bd3d 100644
--- a/arch/mips/pci/Makefile
+++ b/arch/mips/pci/Makefile
@@ -2,7 +2,7 @@
# Makefile for the PCI specific kernel interface routines under Linux.
#
-obj-y += pci.o pci-dac.o
+obj-y += pci.o
#
# PCI bus host bridge specific code
diff --git a/arch/mips/pci/pci-dac.c b/arch/mips/pci/pci-dac.c
deleted file mode 100644
index 0f0ea1b..0000000
--- a/arch/mips/pci/pci-dac.c
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000 Ani Joshi <ajoshi@unixbox.com>
- * Copyright (C) 2000, 2001, 06 Ralf Baechle <ralf@linux-mips.org>
- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
- */
-
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/string.h>
-
-#include <asm/cache.h>
-#include <asm/io.h>
-
-#include <dma-coherence.h>
-
-#include <linux/pci.h>
-
-dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
- struct page *page, unsigned long offset, int direction)
-{
- struct device *dev = &pdev->dev;
-
- BUG_ON(direction == DMA_NONE);
-
- if (!plat_device_is_coherent(dev)) {
- unsigned long addr;
-
- addr = (unsigned long) page_address(page) + offset;
- dma_cache_wback_inv(addr, PAGE_SIZE);
- }
-
- return plat_map_dma_mem_page(dev, page) + offset;
-}
-
-EXPORT_SYMBOL(pci_dac_page_to_dma);
-
-struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return pfn_to_page(plat_dma_addr_to_phys(dma_addr) >> PAGE_SHIFT);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_page);
-
-unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
- dma64_addr_t dma_addr)
-{
- return dma_addr & ~PAGE_MASK;
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_offset);
-
-void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- if (!plat_device_is_coherent(&pdev->dev))
- dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
-
-void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
- dma64_addr_t dma_addr, size_t len, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- if (!plat_device_is_coherent(&pdev->dev))
- dma_cache_wback_inv(dma_addr + PAGE_OFFSET, len);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
diff --git a/arch/x86_64/kernel/pci-dma.c b/arch/x86_64/kernel/pci-dma.c
index 9f80aad..90f6315 100644
--- a/arch/x86_64/kernel/pci-dma.c
+++ b/arch/x86_64/kernel/pci-dma.c
@@ -22,8 +22,7 @@ EXPORT_SYMBOL(bad_dma_address);
int iommu_bio_merge __read_mostly = 0;
EXPORT_SYMBOL(iommu_bio_merge);
-int iommu_sac_force __read_mostly = 0;
-EXPORT_SYMBOL(iommu_sac_force);
+static int iommu_sac_force __read_mostly = 0;
int no_iommu __read_mostly;
#ifdef CONFIG_IOMMU_DEBUG
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