From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 11 May 2010 15:40:57 +0000 (+0200)
Subject: Merge branch 'iommu/largepages' into amd-iommu/2.6.35
X-Git-Tag: v3.12-rc1~10331^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=795e74f7a69f9c08afa4fa7c86cc4f18a62bd630;p=kernel%2Fkernel-generic.git

Merge branch 'iommu/largepages' into amd-iommu/2.6.35

Conflicts:
	arch/x86/kernel/amd_iommu.c
---

795e74f7a69f9c08afa4fa7c86cc4f18a62bd630
diff --cc arch/x86/kernel/amd_iommu.c
index f854d89b,d8da998..fa5a1474
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@@ -2439,58 -2506,31 +2506,41 @@@ static int amd_iommu_attach_device(stru
  	return ret;
  }
  
- static int amd_iommu_map_range(struct iommu_domain *dom,
- 			       unsigned long iova, phys_addr_t paddr,
- 			       size_t size, int iommu_prot)
+ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
+ 			 phys_addr_t paddr, int gfp_order, int iommu_prot)
  {
+ 	unsigned long page_size = 0x1000UL << gfp_order;
  	struct protection_domain *domain = dom->priv;
- 	unsigned long i,  npages = iommu_num_pages(paddr, size, PAGE_SIZE);
  	int prot = 0;
 +	int ret;
  
  	if (iommu_prot & IOMMU_READ)
  		prot |= IOMMU_PROT_IR;
  	if (iommu_prot & IOMMU_WRITE)
  		prot |= IOMMU_PROT_IW;
  
- 	iova  &= PAGE_MASK;
- 	paddr &= PAGE_MASK;
- 
 -	return iommu_map_page(domain, iova, paddr, prot, page_size);
 +	mutex_lock(&domain->api_lock);
- 
- 	for (i = 0; i < npages; ++i) {
- 		ret = iommu_map_page(domain, iova, paddr, prot, PM_MAP_4k);
- 		if (ret)
- 			return ret;
- 
- 		iova  += PAGE_SIZE;
- 		paddr += PAGE_SIZE;
- 	}
- 
++	ret = iommu_map_page(domain, iova, paddr, prot, page_size);
 +	mutex_unlock(&domain->api_lock);
 +
- 	return 0;
++	return ret;
  }
  
- static void amd_iommu_unmap_range(struct iommu_domain *dom,
- 				  unsigned long iova, size_t size)
+ static int amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
+ 			   int gfp_order)
  {
- 
  	struct protection_domain *domain = dom->priv;
- 	unsigned long i,  npages = iommu_num_pages(iova, size, PAGE_SIZE);
+ 	unsigned long page_size, unmap_size;
  
- 	iova  &= PAGE_MASK;
+ 	page_size  = 0x1000UL << gfp_order;
 +
 +	mutex_lock(&domain->api_lock);
- 
- 	for (i = 0; i < npages; ++i) {
- 		iommu_unmap_page(domain, iova, PM_MAP_4k);
- 		iova  += PAGE_SIZE;
- 	}
+ 	unmap_size = iommu_unmap_page(domain, iova, page_size);
++	mutex_unlock(&domain->api_lock);
 +
 +	iommu_flush_tlb_pde(domain);
  
- 	mutex_unlock(&domain->api_lock);
+ 	return get_order(unmap_size);
  }
  
  static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,