From: Pali Rohár <pali@xxxxxxxxxx>
pci-bridge-emul driver already allocates buffer for capabilities up to the
PCI_EXP_SLTSTA2 register, but does not define bit access behavior for these
registers. Add these missing definitions.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Signed-off-by: Marek Behún <kabel@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/pci/pci-bridge-emul.c | 39 +++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/pci/pci-bridge-emul.c b/drivers/pci/pci-bridge-emul.c
index a4af1a533d71..aa3320e3c469 100644
--- a/drivers/pci/pci-bridge-emul.c
+++ b/drivers/pci/pci-bridge-emul.c
@@ -251,6 +251,45 @@ struct pci_bridge_reg_behavior pcie_cap_regs_behavior[PCI_CAP_PCIE_SIZEOF / 4] =
.ro = GENMASK(15, 0) | PCI_EXP_RTSTA_PENDING,
.w1c = PCI_EXP_RTSTA_PME,
},
+
+ [PCI_EXP_DEVCAP2 / 4] = {
+ /* Device capabilities 2 register has reserved bits [30:27]. */
+ .ro = BIT(31) | GENMASK(26, 0),
+ },
+
+ [PCI_EXP_DEVCTL2 / 4] = {
+ /*
+ * Device control 2 register is RW.
+ *
+ * Device status 2 register is reserved.
+ */
+ .rw = GENMASK(15, 0),
+ },
+
+ [PCI_EXP_LNKCAP2 / 4] = {
+ /* Link capabilities 2 register has reserved bits [30:25] and 0. */
+ .ro = BIT(31) | GENMASK(24, 1),
+ },
+
+ [PCI_EXP_LNKCTL2 / 4] = {
+ /*
+ * Link control 2 register is RW.
+ *
+ * Link status 2 register has bits 5, 15 W1C;
+ * bits 10, 11 reserved and others are RO.
+ */
+ .rw = GENMASK(15, 0),
+ .w1c = (BIT(15) | BIT(5)) << 16,
+ .ro = (GENMASK(14, 12) | GENMASK(9, 6) | GENMASK(4, 0)) << 16,
+ },
+
+ [PCI_EXP_SLTCAP2 / 4] = {
+ /* Slot capabilities 2 register is reserved. */
+ },
+
+ [PCI_EXP_SLTCTL2 / 4] = {
+ /* Both Slot control 2 and Slot status 2 registers are reserved. */
+ },
};
/*
--
2.32.0
