From: Pali Rohár Date: Tue, 30 Nov 2021 17:29:05 +0000 (+0100) Subject: PCI: aardvark: Add support for DEVCAP2, DEVCTL2, LNKCAP2 and LNKCTL2 registers on... X-Git-Tag: v6.1-rc5~2209^2~19^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1d3e170344dff2cef8827db6c09909b78cbc11d7;p=platform%2Fkernel%2Flinux-starfive.git 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 Signed-off-by: Marek Behún Signed-off-by: Lorenzo Pieralisi --- diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index c5300d4..25af189 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -884,8 +884,13 @@ advk_pci_bridge_emul_pcie_conf_read(struct pci_bridge_emul *bridge, case PCI_CAP_LIST_ID: case PCI_EXP_DEVCAP: case PCI_EXP_DEVCTL: + 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; } @@ -899,10 +904,6 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge, struct advk_pcie *pcie = bridge->data; 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) @@ -924,6 +925,12 @@ advk_pci_bridge_emul_pcie_conf_write(struct pci_bridge_emul *bridge, advk_writel(pcie, new, PCIE_ISR0_REG); 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; }