diff options
| author | Frank Li <Frank.Li@nxp.com> | 2025-03-15 15:15:47 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-03-24 14:58:34 -0500 |
| commit | befc86a0b354285f49b6d0dccd50956e95f437c4 (patch) | |
| tree | 669e369a1cdfc9083997655222b8428bb2a90e90 /drivers/pci/controller/dwc/pcie-designware-ep.c | |
| parent | f3e1dccba0a0833fc9a05fb838ebeb6ea4ca0e1a (diff) | |
PCI: dwc: Use parent_bus_offset to remove need for .cpu_addr_fixup()
We know the parent_bus_offset, either computed from a DT reg property (the
offset is the CPU physical addr - the 'config'/'addr_space' address on the
parent bus) or from a .cpu_addr_fixup() (which may have used a host bridge
window offset).
Apply that parent_bus_offset instead of calling .cpu_addr_fixup() when
programming the ATU.
This assumes all intermediate addresses are at the same offset from the CPU
physical addresses.
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20250315201548.858189-13-helgaas@kernel.org
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware-ep.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware-ep.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index 2ef9964fa080..c1feaadb046a 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -314,7 +314,8 @@ static void dw_pcie_ep_unmap_addr(struct pci_epc *epc, u8 func_no, u8 vfunc_no, struct dw_pcie_ep *ep = epc_get_drvdata(epc); struct dw_pcie *pci = to_dw_pcie_from_ep(ep); - ret = dw_pcie_find_index(ep, addr, &atu_index); + ret = dw_pcie_find_index(ep, addr - pci->parent_bus_offset, + &atu_index); if (ret < 0) return; @@ -333,7 +334,7 @@ static int dw_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, u8 vfunc_no, atu.func_no = func_no; atu.type = PCIE_ATU_TYPE_MEM; - atu.parent_bus_addr = addr; + atu.parent_bus_addr = addr - pci->parent_bus_offset; atu.pci_addr = pci_addr; atu.size = size; ret = dw_pcie_ep_outbound_atu(ep, &atu); |