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author | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-24 16:43:06 +0100 |
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committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-27 14:20:28 +0100 |
commit | 71c70984e5afc20d304fbb523f1c8bb42c4ceb36 (patch) | |
tree | 37a5d835a81bb7d3a264ebcd3168094cfff3c702 /arch/x86/kernel/amd_iommu.c | |
parent | 94f6d190eeed91cb2bb901aa7816edd1e2405347 (diff) | |
download | op-kernel-dev-71c70984e5afc20d304fbb523f1c8bb42c4ceb36.zip op-kernel-dev-71c70984e5afc20d304fbb523f1c8bb42c4ceb36.tar.gz |
x86/amd-iommu: Move find_protection_domain to helper functions
This is a helper function and when its placed in the helper
function section we can remove its forward declaration.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
-rw-r--r-- | arch/x86/kernel/amd_iommu.c | 57 |
1 files changed, 28 insertions, 29 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index e5bbe9a..405f8da 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -59,7 +59,6 @@ struct iommu_cmd { static int dma_ops_unity_map(struct dma_ops_domain *dma_dom, struct unity_map_entry *e); -static struct dma_ops_domain *find_protection_domain(u16 devid); static u64 *alloc_pte(struct protection_domain *domain, unsigned long address, int end_lvl, u64 **pte_page, gfp_t gfp); @@ -84,6 +83,34 @@ static inline u16 get_device_id(struct device *dev) return calc_devid(pdev->bus->number, pdev->devfn); } +/* + * In this function the list of preallocated protection domains is traversed to + * find the domain for a specific device + */ +static struct dma_ops_domain *find_protection_domain(u16 devid) +{ + struct dma_ops_domain *entry, *ret = NULL; + unsigned long flags; + u16 alias = amd_iommu_alias_table[devid]; + + if (list_empty(&iommu_pd_list)) + return NULL; + + spin_lock_irqsave(&iommu_pd_list_lock, flags); + + list_for_each_entry(entry, &iommu_pd_list, list) { + if (entry->target_dev == devid || + entry->target_dev == alias) { + ret = entry; + break; + } + } + + spin_unlock_irqrestore(&iommu_pd_list_lock, flags); + + return ret; +} + #ifdef CONFIG_AMD_IOMMU_STATS /* @@ -1456,34 +1483,6 @@ static bool check_device(struct device *dev) } /* - * In this function the list of preallocated protection domains is traversed to - * find the domain for a specific device - */ -static struct dma_ops_domain *find_protection_domain(u16 devid) -{ - struct dma_ops_domain *entry, *ret = NULL; - unsigned long flags; - u16 alias = amd_iommu_alias_table[devid]; - - if (list_empty(&iommu_pd_list)) - return NULL; - - spin_lock_irqsave(&iommu_pd_list_lock, flags); - - list_for_each_entry(entry, &iommu_pd_list, list) { - if (entry->target_dev == devid || - entry->target_dev == alias) { - ret = entry; - break; - } - } - - spin_unlock_irqrestore(&iommu_pd_list_lock, flags); - - return ret; -} - -/* * In the dma_ops path we only have the struct device. This function * finds the corresponding IOMMU, the protection domain and the * requestor id for a given device. |