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PCI: aardvark: Add support for DEVCAP2, DEVCTL2, LNKCAP2 and LNKCTL2 registers on emulated bridge
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. Link: https://lore.kernel.org/r/20211130172913.9727-4-kabel@kernel.org Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
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parent
8ea673a8b3
commit
1d3e170344
1 changed files with 11 additions and 4 deletions
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@ -884,8 +884,13 @@ advk_pci_bridge_emul_pcie_conf_read(struct pci_bridge_emul *bridge,
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case PCI_CAP_LIST_ID:
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case PCI_EXP_DEVCAP:
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case PCI_EXP_DEVCTL:
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case PCI_EXP_DEVCAP2:
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case PCI_EXP_DEVCTL2:
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case PCI_EXP_LNKCAP2:
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case PCI_EXP_LNKCTL2:
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*value = advk_readl(pcie, PCIE_CORE_PCIEXP_CAP + reg);
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return PCI_BRIDGE_EMUL_HANDLED;
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default:
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return PCI_BRIDGE_EMUL_NOT_HANDLED;
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}
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@ -899,10 +904,6 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
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struct advk_pcie *pcie = bridge->data;
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switch (reg) {
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case PCI_EXP_DEVCTL:
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advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
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break;
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case PCI_EXP_LNKCTL:
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advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
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if (new & PCI_EXP_LNKCTL_RL)
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@ -924,6 +925,12 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge,
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advk_writel(pcie, new, PCIE_ISR0_REG);
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break;
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case PCI_EXP_DEVCTL:
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case PCI_EXP_DEVCTL2:
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case PCI_EXP_LNKCTL2:
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advk_writel(pcie, new, PCIE_CORE_PCIEXP_CAP + reg);
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break;
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default:
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break;
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}
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