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| author | Hou Zhiqiang <[email protected]> | 2021-04-13 14:22:19 +0000 |
|---|---|---|
| committer | Lorenzo Pieralisi <[email protected]> | 2021-04-29 16:05:59 +0000 |
| commit | 8bcca26585585ae4b44d25d30f351ad0afa4976b (patch) | |
| tree | 77d2aa7dbf5d895d319dc93d3f6c1d429c51b2b2 /drivers/pci/controller/dwc/pcie-designware.h | |
| parent | PCI: dwc/intel-gw: Remove unused function (diff) | |
| download | kernel-8bcca26585585ae4b44d25d30f351ad0afa4976b.tar.gz kernel-8bcca26585585ae4b44d25d30f351ad0afa4976b.zip | |
PCI: dwc: Move iATU detection earlier
dw_pcie_ep_init() depends on the detected iATU region numbers to allocate
the in/outbound window management bitmap. It fails after 281f1f99cf3a
("PCI: dwc: Detect number of iATU windows").
Move the iATU region detection into a new function, move the detection to
the very beginning of dw_pcie_host_init() and dw_pcie_ep_init(). Also
remove it from the dw_pcie_setup(), since it's more like a software
initialization step than hardware setup.
Link: https://lore.kernel.org/r/[email protected]
Link: https://lore.kernel.org/linux-pci/[email protected]
Link: https://lore.kernel.org/r/[email protected]
Fixes: 281f1f99cf3a ("PCI: dwc: Detect number of iATU windows")
Tested-by: Kunihiko Hayashi <[email protected]>
Tested-by: Marek Szyprowski <[email protected]>
Tested-by: Manivannan Sadhasivam <[email protected]>
Signed-off-by: Hou Zhiqiang <[email protected]>
[DB: moved dw_pcie_iatu_detect to happen after host_init callback]
Signed-off-by: Dmitry Baryshkov <[email protected]>
Signed-off-by: Lorenzo Pieralisi <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Cc: [email protected] # v5.11+
Cc: Marek Szyprowski <[email protected]>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware.h')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 7247c8b01f04..7d6e9b7576be 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -306,6 +306,7 @@ int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, void dw_pcie_disable_atu(struct dw_pcie *pci, int index, enum dw_pcie_region_type type); void dw_pcie_setup(struct dw_pcie *pci); +void dw_pcie_iatu_detect(struct dw_pcie *pci); static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val) { |