Hi Marc,
On 13/03/2019 11:45, Marc Gonzalez wrote:
We don't need to fudge the device class in qcom_pcie_rd_own_conf()
because dw_pcie_setup_rc() already does the right thing:
/* Program correct class for RC */
dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, PCI_CLASS_BRIDGE_PCI);
Signed-off-by: Marc Gonzalez <marc.w.gonzalez@xxxxxxx>
---
Changes from v1 to v2: Completely drop qcom_pcie_rd_own_conf
Srinivas, could you test this patch on apq/ipq8064?
---
drivers/pci/controller/dwc/pcie-qcom.c | 17 -----------------
1 file changed, 17 deletions(-)
I tried this patch on IFC6410 board which has APQ8064, and the pci does
not work anymore after applying this patch.
non-working output of 'lspci -vvv'
https://paste.ubuntu.com/p/ndmdsW4zkJ/ and bootlog
ahttps://paste.ubuntu.com/p/CqVzGymnq8/
working without patch : https://paste.ubuntu.com/p/TJm4hgjGW4/
I have not debugged it any further other than just testing the patch.
Let me know if you need any more dumps for more debug.
Thanks,
srini
diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 3de5510fd3d5..d0c5c7616b3e 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1131,25 +1131,8 @@ static int qcom_pcie_host_init(struct pcie_port *pp)
return ret;
}
-static int qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size,
- u32 *val)
-{
- struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
-
- /* the device class is not reported correctly from the register */
- if (where == PCI_CLASS_REVISION && size == 4) {
- *val = readl(pci->dbi_base + PCI_CLASS_REVISION);
- *val &= 0xff; /* keep revision id */
- *val |= PCI_CLASS_BRIDGE_PCI << 16;
- return PCIBIOS_SUCCESSFUL;
- }
-
- return dw_pcie_read(pci->dbi_base + where, size, val);
-}
-
static const struct dw_pcie_host_ops qcom_pcie_dw_ops = {
.host_init = qcom_pcie_host_init,
- .rd_own_conf = qcom_pcie_rd_own_conf,
};
/* Qcom IP rev.: 2.1.0 Synopsys IP rev.: 4.01a */
