47 static int dpc_wait_rp_inactive(struct dpc_dev *dpc)  in dpc_wait_rp_inactive()  argument
50 	struct pci_dev *pdev = dpc->dev->port;  in dpc_wait_rp_inactive()
51 	struct device *dev = &dpc->dev->device;  in dpc_wait_rp_inactive()
52 	u16 cap = dpc->cap_pos, status;  in dpc_wait_rp_inactive()
69 	struct dpc_dev *dpc;  in dpc_reset_link()  local
81 	dpc = get_service_data(pciedev);  in dpc_reset_link()
82 	cap = dpc->cap_pos;  in dpc_reset_link()
90 	if (dpc->rp_extensions && dpc_wait_rp_inactive(dpc))  in dpc_reset_link()
100 static void dpc_process_rp_pio_error(struct dpc_dev *dpc)  in dpc_process_rp_pio_error()  argument
102 	struct device *dev = &dpc->dev->device;  in dpc_process_rp_pio_error()
103 	struct pci_dev *pdev = dpc->dev->port;  in dpc_process_rp_pio_error()
104 	u16 cap = dpc->cap_pos, dpc_status, first_error;  in dpc_process_rp_pio_error()
129 	if (dpc->rp_log_size < 4)  in dpc_process_rp_pio_error()
142 	if (dpc->rp_log_size < 5)  in dpc_process_rp_pio_error()
147 	for (i = 0; i < dpc->rp_log_size - 5; i++) {  in dpc_process_rp_pio_error()
159 	struct dpc_dev *dpc = context;  in dpc_handler()  local
160 	struct pci_dev *pdev = dpc->dev->port;  in dpc_handler()
161 	struct device *dev = &dpc->dev->device;  in dpc_handler()
162 	u16 cap = dpc->cap_pos, status, source, reason, ext_reason;  in dpc_handler()
181 	if (dpc->rp_extensions && reason == 3 && ext_reason == 0)  in dpc_handler()
182 		dpc_process_rp_pio_error(dpc);  in dpc_handler()
196 	struct dpc_dev *dpc = (struct dpc_dev *)context;  in dpc_irq()  local
197 	struct pci_dev *pdev = dpc->dev->port;  in dpc_irq()
198 	u16 cap = dpc->cap_pos, status;  in dpc_irq()
215 	struct dpc_dev *dpc;  in dpc_probe()  local
224 	dpc = devm_kzalloc(device, sizeof(*dpc), GFP_KERNEL);  in dpc_probe()
225 	if (!dpc)  in dpc_probe()
228 	dpc->cap_pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DPC);  in dpc_probe()
229 	dpc->dev = dev;  in dpc_probe()
230 	set_service_data(dev, dpc);  in dpc_probe()
234 					   "pcie-dpc", dpc);  in dpc_probe()
241 	pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CAP, &cap);  in dpc_probe()
242 	pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, &ctl);  in dpc_probe()
244 	dpc->rp_extensions = (cap & PCI_EXP_DPC_CAP_RP_EXT);  in dpc_probe()
245 	if (dpc->rp_extensions) {  in dpc_probe()
246 		dpc->rp_log_size = (cap & PCI_EXP_DPC_RP_PIO_LOG_SIZE) >> 8;  in dpc_probe()
247 		if (dpc->rp_log_size < 4 || dpc->rp_log_size > 9) {  in dpc_probe()
249 				dpc->rp_log_size);  in dpc_probe()
250 			dpc->rp_log_size = 0;  in dpc_probe()
255 	pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, ctl);  in dpc_probe()
260 		FLAG(cap, PCI_EXP_DPC_CAP_SW_TRIGGER), dpc->rp_log_size,  in dpc_probe()
267 	struct dpc_dev *dpc = get_service_data(dev);  in dpc_remove()  local
271 	pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, &ctl);  in dpc_remove()
273 	pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, ctl);  in dpc_remove()