diff options
Diffstat (limited to 'drivers/pci/hotplug/pciehp.h')
| -rw-r--r-- | drivers/pci/hotplug/pciehp.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h index e0a614acee05..debc79b0adfb 100644 --- a/drivers/pci/hotplug/pciehp.h +++ b/drivers/pci/hotplug/pciehp.h @@ -46,6 +46,9 @@ extern int pciehp_poll_time; /** * struct controller - PCIe hotplug controller * @pcie: pointer to the controller's PCIe port service device + * @dsn: cached copy of Device Serial Number of Function 0 in the hotplug slot + * (PCIe r6.2 sec 7.9.3); used to determine whether a hotplugged device + * was replaced with a different one during system sleep * @slot_cap: cached copy of the Slot Capabilities register * @inband_presence_disabled: In-Band Presence Detect Disable supported by * controller and disabled per spec recommendation (PCIe r5.0, appendix I @@ -87,6 +90,7 @@ extern int pciehp_poll_time; */ struct controller { struct pcie_device *pcie; + u64 dsn; u32 slot_cap; /* capabilities and quirks */ unsigned int inband_presence_disabled:1; @@ -183,6 +187,7 @@ int pciehp_card_present(struct controller *ctrl); int pciehp_card_present_or_link_active(struct controller *ctrl); int pciehp_check_link_status(struct controller *ctrl); int pciehp_check_link_active(struct controller *ctrl); +bool pciehp_device_replaced(struct controller *ctrl); void pciehp_release_ctrl(struct controller *ctrl); int pciehp_sysfs_enable_slot(struct hotplug_slot *hotplug_slot); |