[U-Boot] [PATCH] pci/layerscape: Setup mmu-masters property for the PCIe

Varun Sethi
2015-07-28T18:33:47Z

Setup mmu-masters property for the PCIe controllers. This would be
used by the Linux SMMU driver, while setting up stream ID table mappings
for the PCIe devices.

Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
---
drivers/pci/pcie_layerscape.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c
index 95cfe8c..2f24a6a 100644
--- a/drivers/pci/pcie_layerscape.c
+++ b/drivers/pci/pcie_layerscape.c
@@ -689,6 +689,7 @@ void fdt_fixup_smmu_pcie(void *blob)
{
int count;
u32 stream_ids[MAX_STREAM_IDS];
+ u32 ctlr_streamid = 0x300;

#ifdef CONFIG_PCIE1
/* PEX1 stream ID fixup */
@@ -696,6 +697,8 @@ void fdt_fixup_smmu_pcie(void *blob)
alloc_stream_ids(FSL_PEX1_STREAM_ID_START, count, stream_ids,
MAX_STREAM_IDS);
pcie_set_available_streamids(blob, "/pcie at 3400000", stream_ids, count);
+ append_mmu_masters(blob, "/iommu at 5000000", "/pcie at 3400000",
+ &ctlr_streamid, 1);
#endif

#ifdef CONFIG_PCIE2
@@ -704,6 +707,8 @@ void fdt_fixup_smmu_pcie(void *blob)
alloc_stream_ids(FSL_PEX2_STREAM_ID_START, count, stream_ids,
MAX_STREAM_IDS);
pcie_set_available_streamids(blob, "/pcie at 3500000", stream_ids, count);
+ append_mmu_masters(blob, "/iommu at 5000000", "/pcie at 3500000",
+ &ctlr_streamid, 1);
#endif

#ifdef CONFIG_PCIE3
@@ -712,6 +717,8 @@ void fdt_fixup_smmu_pcie(void *blob)
alloc_stream_ids(FSL_PEX3_STREAM_ID_START, count, stream_ids,
MAX_STREAM_IDS);
pcie_set_available_streamids(blob, "/pcie at 3600000", stream_ids, count);
+ append_mmu_masters(blob, "/iommu at 5000000", "/pcie at 3600000",
+ &ctlr_streamid, 1);
#endif

#ifdef CONFIG_PCIE4
@@ -720,6 +727,8 @@ void fdt_fixup_smmu_pcie(void *blob)
alloc_stream_ids(FSL_PEX4_STREAM_ID_START, count, stream_ids,
MAX_STREAM_IDS);
pcie_set_available_streamids(blob, "/pcie at 3700000", stream_ids, count);
+ append_mmu_masters(blob, "/iommu at 5000000", "/pcie at 3700000",
+ &ctlr_streamid, 1);
#endif
}
#endif
--
1.7.9.5