PCI aardvark hardware supports access to DEVCAP2, DEVCTL2, LNKCAP2 and
LNKCTL2 configuration registers of PCIe core via PCIE_CORE_PCIEXP_CAP.
Export them via emulated software root bridge.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Reviewed-by: Marek Behún <kabel@xxxxxxxxxx>
Fixes: 8a3ebd8de328 ("PCI: aardvark: Implement emulated root PCI bridge config space")
---
drivers/pci/controller/pci-aardvark.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
index e724d05a61a8..13bbc0b5134d 100644
--- a/drivers/pci/controller/pci-aardvark.c
+++ b/drivers/pci/controller/pci-aardvark.c
@@ -610,8 +610,13 @@ advk_pci_bridge_emul_pcie_conf_read(struct pci_bridge_emul *bridge,
case PCI_EXP_DEVCAP:
case PCI_EXP_DEVCTL:
case PCI_EXP_LNKCAP:
+ case PCI_EXP_DEVCAP2:
+ case PCI_EXP_DEVCTL2:
+ case PCI_EXP_LNKCAP2:
+ case PCI_EXP_LNKCTL2:
*value = advk_readl(pcie, PCIE_CORE_PCIEXP_CAP + reg);
return PCI_BRIDGE_EMUL_HANDLED;
+
default:
return PCI_BRIDGE_EMUL_NOT_HANDLED;
}
@@ -631,16 +636,18 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
*/
switch (reg) {
- case PCI_EXP_DEVCTL:
- advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
- break;
-
case PCI_EXP_LNKCTL:
advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
if (new & PCI_EXP_LNKCTL_RL)
advk_pcie_wait_for_retrain(pcie);
break;
+ case PCI_EXP_DEVCTL:
+ case PCI_EXP_DEVCTL2:
+ case PCI_EXP_LNKCTL2:
+ advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
+ break;
+
default:
break;
}
--
2.20.1
