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authorSebastian Andrzej Siewior <bigeasy@linutronix.de>2018-03-22 16:22:39 +0100
committerJoerg Roedel <jroedel@suse.de>2018-03-29 10:38:16 +0200
commit2fcc1e8ac4a8514c64f946178fc36c2e30e56a41 (patch)
tree2bc696ddcbd9ecf5ed0afca0cd594a3939415239 /drivers/iommu
parent4fde541c9dc114c5b448ad34b0286fe8b7c550f1 (diff)
downloadlinux-2fcc1e8ac4a8514c64f946178fc36c2e30e56a41.tar.bz2
iommu/amd: Factor out setting the remap table for a devid
Setting the IRQ remap table for a specific devid (or its alias devid) includes three steps. Those three steps are always repeated each time this is done. Introduce a new helper function, move those steps there and use that function instead. The compiler can still decide if it is worth to inline. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c23
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index ea120c7b46c9..11ea2d656be8 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3617,6 +3617,14 @@ static struct irq_remap_table *get_irq_table(u16 devid)
return table;
}
+static void set_remap_table_entry(struct amd_iommu *iommu, u16 devid,
+ struct irq_remap_table *table)
+{
+ irq_lookup_table[devid] = table;
+ set_dte_irq_entry(devid, table);
+ iommu_flush_dte(iommu, devid);
+}
+
static struct irq_remap_table *alloc_irq_table(u16 devid)
{
struct irq_remap_table *table = NULL;
@@ -3637,9 +3645,7 @@ static struct irq_remap_table *alloc_irq_table(u16 devid)
alias = amd_iommu_alias_table[devid];
table = irq_lookup_table[alias];
if (table) {
- irq_lookup_table[devid] = table;
- set_dte_irq_entry(devid, table);
- iommu_flush_dte(iommu, devid);
+ set_remap_table_entry(iommu, devid, table);
goto out;
}
@@ -3666,14 +3672,9 @@ static struct irq_remap_table *alloc_irq_table(u16 devid)
(MAX_IRQS_PER_TABLE * (sizeof(u64) * 2)));
- irq_lookup_table[devid] = table;
- set_dte_irq_entry(devid, table);
- iommu_flush_dte(iommu, devid);
- if (devid != alias) {
- irq_lookup_table[alias] = table;
- set_dte_irq_entry(alias, table);
- iommu_flush_dte(iommu, alias);
- }
+ set_remap_table_entry(iommu, devid, table);
+ if (devid != alias)
+ set_remap_table_entry(iommu, alias, table);
out:
iommu_completion_wait(iommu);