From: Pali Rohár pali@kernel.org
commit 239edf686c14a9ff926dec2f350289ed7adfefe2 upstream.
This register is exported at address offset 0x30.
Link: https://lore.kernel.org/r/20211028185659.20329-8-kabel@kernel.org Fixes: 8a3ebd8de328 ("PCI: aardvark: Implement emulated root PCI bridge config space") 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 Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pci/controller/pci-aardvark.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -31,6 +31,7 @@ #define PCIE_CORE_DEV_ID_REG 0x0 #define PCIE_CORE_CMD_STATUS_REG 0x4 #define PCIE_CORE_DEV_REV_REG 0x8 +#define PCIE_CORE_EXP_ROM_BAR_REG 0x30 #define PCIE_CORE_PCIEXP_CAP 0xc0 #define PCIE_CORE_ERR_CAPCTL_REG 0x118 #define PCIE_CORE_ERR_CAPCTL_ECRC_CHK_TX BIT(5) @@ -813,6 +814,10 @@ advk_pci_bridge_emul_base_conf_read(stru *value = advk_readl(pcie, PCIE_CORE_CMD_STATUS_REG); return PCI_BRIDGE_EMUL_HANDLED;
+ case PCI_ROM_ADDRESS1: + *value = advk_readl(pcie, PCIE_CORE_EXP_ROM_BAR_REG); + return PCI_BRIDGE_EMUL_HANDLED; + case PCI_INTERRUPT_LINE: { /* * From the whole 32bit register we support reading from HW only @@ -845,6 +850,10 @@ advk_pci_bridge_emul_base_conf_write(str advk_writel(pcie, new, PCIE_CORE_CMD_STATUS_REG); break;
+ case PCI_ROM_ADDRESS1: + advk_writel(pcie, new, PCIE_CORE_EXP_ROM_BAR_REG); + break; + case PCI_INTERRUPT_LINE: if (mask & (PCI_BRIDGE_CTL_BUS_RESET << 16)) { u32 val = advk_readl(pcie, PCIE_CORE_CTRL1_REG);