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authorAlexey Kardashevskiy <aik@ozlabs.ru>2022-07-14 11:08:00 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2022-07-28 09:22:13 +0300
commitd73b46c3c1449bf27f793b9d9ee86ed70c7a7163 (patch)
tree5b87409b0ab438580dea90b2140369473c9e6cba /arch/powerpc
parentb1fc44eaa9ba31e28c4125d6b9205a3582b47b5d (diff)
downloadlinux-d73b46c3c1449bf27f793b9d9ee86ed70c7a7163.tar.xz
powerpc/ioda/iommu/debugfs: Generate unique debugfs entries
The iommu_table::it_index is a LIOBN which is not initialized on PowerNV as it is not used except IOMMU debugfs where it is used for a node name. This initializes it_index witn a unique number to avoid warnings and have a node for every iommu_table. This should not cause any behavioral change without CONFIG_IOMMU_DEBUGFS. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220714080800.3712998-1-aik@ozlabs.ru
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/powernv/pci-ioda.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index c8cf2728031a..9de9b2fb163d 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1609,6 +1609,7 @@ found:
tbl->it_ops = &pnv_ioda1_iommu_ops;
pe->table_group.tce32_start = tbl->it_offset << tbl->it_page_shift;
pe->table_group.tce32_size = tbl->it_size << tbl->it_page_shift;
+ tbl->it_index = (phb->hose->global_number << 16) | pe->pe_number;
if (!iommu_init_table(tbl, phb->hose->node, 0, 0))
panic("Failed to initialize iommu table");
@@ -1779,6 +1780,7 @@ static long pnv_pci_ioda2_setup_default_config(struct pnv_ioda_pe *pe)
res_end = min(window_size, SZ_4G) >> tbl->it_page_shift;
}
+ tbl->it_index = (pe->phb->hose->global_number << 16) | pe->pe_number;
if (iommu_init_table(tbl, pe->phb->hose->node, res_start, res_end))
rc = pnv_pci_ioda2_set_window(&pe->table_group, 0, tbl);
else