Hi Alexey,
> This patch does 2 things:
> 1. removes the loop in which PCI devices were added to groups and
> adds explicit iommu_add_device() calls to add devices as soon as they get
> the iommu_table pointer assigned to them.
> 2. moves a bus notifier to powernv code in order to avoid conflict with
> the notifier from Freescale driver.
This breaks when building with !IOMMU_API for me, as the
iommu_add_device function is declared but not defined. We'd need
something like the following (on top of your change) to work:
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h
index 426d0ec0..04d2abbe 100644
--- a/arch/powerpc/include/asm/iommu.h
+++ b/arch/powerpc/include/asm/iommu.h
@@ -102,10 +102,27 @@ extern void iommu_free_table(struct iommu_table *tbl, cons
*/
extern struct iommu_table *iommu_init_table(struct iommu_table * tbl,
int nid);
+
+#ifdef CONFIG_IOMMU_API
extern void iommu_register_group(struct iommu_table *tbl,
int pci_domain_number, unsigned long pe_num);
extern int iommu_add_device(struct device *dev);
extern void iommu_del_device(struct device *dev);
+#else
+static inline void iommu_register_group(struct iommu_table *tbl,
+ int pci_domain_number, unsigned long pe_num)
+{
+}
+
+static inline int iommu_add_device(struct device *dev)
+{
+ return 0;
+}
+
+static inline void iommu_del_device(struct device *dev)
+{
+}
+#endif
static inline void set_iommu_table_base_and_group(struct device *dev,
void *base)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 170b2182..5a02a50f 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -1212,11 +1212,4 @@ void iommu_del_device(struct device *dev)
}
EXPORT_SYMBOL_GPL(iommu_del_device);
-#else
-
-void iommu_register_group(struct iommu_table *tbl,
- int pci_domain_number, unsigned long pe_num)
-{
-}
-
#endif /* CONFIG_IOMMU_API */
Cheers,
Jeremy
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