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Date: Mon, 4 Aug 2008 18:04:41 +0200
From: Joerg Roedel <joerg.roedel@....com>
To: Andrew Morton <akpm@...ux-foundation.org>
CC: mingo@...hat.com, tglx@...utronix.de, hpa@...or.com,
rth@...ddle.net, paulus@...ba.org, benh@...nel.crashing.org,
davem@...emloft.net,
FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
Muli Ben-Yehuda <muli@...ibm.com>,
linux-kernel@...r.kernel.org, Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 01/10] x86: rename iommu_num_pages function to iommu_nr_pages
This is a preparation patch for introducing a generic iommu_num_pages function.
Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
arch/x86/kernel/amd_iommu.c | 8 ++++----
arch/x86/kernel/pci-dma.c | 4 ++--
arch/x86/kernel/pci-gart_64.c | 8 ++++----
include/asm-x86/iommu.h | 2 +-
4 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 22d7d05..f211341 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -182,7 +182,7 @@ static int iommu_flush_pages(struct amd_iommu *iommu, u16 domid,
u64 address, size_t size)
{
int s = 0;
- unsigned pages = iommu_num_pages(address, size);
+ unsigned pages = iommu_nr_pages(address, size);
address &= PAGE_MASK;
@@ -554,7 +554,7 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu,
if (iommu->exclusion_start &&
iommu->exclusion_start < dma_dom->aperture_size) {
unsigned long startpage = iommu->exclusion_start >> PAGE_SHIFT;
- int pages = iommu_num_pages(iommu->exclusion_start,
+ int pages = iommu_nr_pages(iommu->exclusion_start,
iommu->exclusion_length);
dma_ops_reserve_addresses(dma_dom, startpage, pages);
}
@@ -764,7 +764,7 @@ static dma_addr_t __map_single(struct device *dev,
unsigned int pages;
int i;
- pages = iommu_num_pages(paddr, size);
+ pages = iommu_nr_pages(paddr, size);
paddr &= PAGE_MASK;
address = dma_ops_alloc_addresses(dev, dma_dom, pages);
@@ -799,7 +799,7 @@ static void __unmap_single(struct amd_iommu *iommu,
if ((dma_addr == 0) || (dma_addr + size > dma_dom->aperture_size))
return;
- pages = iommu_num_pages(dma_addr, size);
+ pages = iommu_nr_pages(dma_addr, size);
dma_addr &= PAGE_MASK;
start = dma_addr;
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 87d4d69..9e46c71 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -124,13 +124,13 @@ void __init pci_iommu_alloc(void)
pci_swiotlb_init();
}
-unsigned long iommu_num_pages(unsigned long addr, unsigned long len)
+unsigned long iommu_nr_pages(unsigned long addr, unsigned long len)
{
unsigned long size = roundup((addr & ~PAGE_MASK) + len, PAGE_SIZE);
return size >> PAGE_SHIFT;
}
-EXPORT_SYMBOL(iommu_num_pages);
+EXPORT_SYMBOL(iommu_nr_pages);
#endif
/*
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 49285f8..cdf1c00 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -238,7 +238,7 @@ nonforced_iommu(struct device *dev, unsigned long addr, size_t size)
static dma_addr_t dma_map_area(struct device *dev, dma_addr_t phys_mem,
size_t size, int dir)
{
- unsigned long npages = iommu_num_pages(phys_mem, size);
+ unsigned long npages = iommu_nr_pages(phys_mem, size);
unsigned long iommu_page = alloc_iommu(dev, npages);
int i;
@@ -301,7 +301,7 @@ static void gart_unmap_single(struct device *dev, dma_addr_t dma_addr,
return;
iommu_page = (dma_addr - iommu_bus_base)>>PAGE_SHIFT;
- npages = iommu_num_pages(dma_addr, size);
+ npages = iommu_nr_pages(dma_addr, size);
for (i = 0; i < npages; i++) {
iommu_gatt_base[iommu_page + i] = gart_unmapped_entry;
CLEAR_LEAK(iommu_page + i);
@@ -384,7 +384,7 @@ static int __dma_map_cont(struct device *dev, struct scatterlist *start,
}
addr = phys_addr;
- pages = iommu_num_pages(s->offset, s->length);
+ pages = iommu_nr_pages(s->offset, s->length);
while (pages--) {
iommu_gatt_base[iommu_page] = GPTE_ENCODE(addr);
SET_LEAK(iommu_page);
@@ -467,7 +467,7 @@ gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, int dir)
seg_size += s->length;
need = nextneed;
- pages += iommu_num_pages(s->offset, s->length);
+ pages += iommu_nr_pages(s->offset, s->length);
ps = s;
}
if (dma_map_cont(dev, start_sg, i - start, sgmap, pages, need) < 0)
diff --git a/include/asm-x86/iommu.h b/include/asm-x86/iommu.h
index 5f888cc..61d64e4 100644
--- a/include/asm-x86/iommu.h
+++ b/include/asm-x86/iommu.h
@@ -7,7 +7,7 @@ extern struct dma_mapping_ops nommu_dma_ops;
extern int force_iommu, no_iommu;
extern int iommu_detected;
-extern unsigned long iommu_num_pages(unsigned long addr, unsigned long len);
+extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
#ifdef CONFIG_GART_IOMMU
extern int gart_iommu_aperture;
--
1.5.3.7
--
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