9 #define dev_fmt(fmt) "DPC: " fmt
96  * pci_dpc_recovered - whether DPC triggered and has recovered successfully
99  * Return true if DPC was triggered for @pdev and has recovered successfully.
101  * driver to recognize and ignore Link Down/Up events caused by DPC.
111 	 * Synchronization between hotplug and DPC is not supported  in pci_dpc_recovered()
112 	 * if DPC is owned by firmware and EDR is not enabled.  in pci_dpc_recovered()
119 	 * Need a timeout in case DPC never completes due to failure of  in pci_dpc_recovered()
121 	 * but reports indicate that DPC completes within 4 seconds.  in pci_dpc_recovered()
156 	 * DPC disables the Link automatically in hardware, so it has  in dpc_reset_link()
162 	 * Wait until the Link is inactive, then clear DPC Trigger Status  in dpc_reset_link()
163 	 * to allow the Port to leave DPC.  in dpc_reset_link()
177 	if (pci_bridge_wait_for_secondary_bus(pdev, "DPC")) {  in dpc_reset_link()
366 	/* We configure DPC so it only triggers on ERR_FATAL */  in dpc_handler()
418 	int dpc = pdev->dpc_cap;  in dpc_enable()  local
422 	 * Clear DPC Interrupt Status so we don't get an interrupt for an  in dpc_enable()
423 	 * old event when setting DPC Interrupt Enable.  in dpc_enable()
425 	pci_write_config_word(pdev, dpc + PCI_EXP_DPC_STATUS,  in dpc_enable()
428 	pci_read_config_word(pdev, dpc + PCI_EXP_DPC_CTL, &ctl);  in dpc_enable()
431 	pci_write_config_word(pdev, dpc + PCI_EXP_DPC_CTL, ctl);  in dpc_enable()
437 	int dpc = pdev->dpc_cap;  in dpc_disable()  local
440 	/* Disable DPC triggering and DPC interrupts */  in dpc_disable()
441 	pci_read_config_word(pdev, dpc + PCI_EXP_DPC_CTL, &ctl);  in dpc_disable()
443 	pci_write_config_word(pdev, dpc + PCI_EXP_DPC_CTL, ctl);  in dpc_disable()
459 					   "pcie-dpc", pdev);  in dpc_probe()
498 	.name		= "dpc",