controller/cadence/pcie-cadence-host.c

32 	struct cdns_pcie_rc *rc = pci_host_bridge_priv(bridge);
33 	struct cdns_pcie *pcie = &rc->pcie;
73 	return rc->cfg_base + (where & 0xfff);
161 static int cdns_pcie_host_start_link(struct cdns_pcie_rc *rc)
163 	struct cdns_pcie *pcie = &rc->pcie;
172 	if (!ret && rc->quirk_retrain_flag)
178 static int cdns_pcie_host_init_root_port(struct cdns_pcie_rc *rc)
180 	struct cdns_pcie *pcie = &rc->pcie;
202 	if (rc->vendor_id != 0xffff) {
203 		id = CDNS_PCIE_LM_ID_VENDOR(rc->vendor_id) |
204 			CDNS_PCIE_LM_ID_SUBSYS(rc->vendor_id);
208 	if (rc->device_id != 0xffff)
209 		cdns_pcie_rp_writew(pcie, PCI_DEVICE_ID, rc->device_id);
218 static int cdns_pcie_host_bar_ib_config(struct cdns_pcie_rc *rc,
223 	struct cdns_pcie *pcie = &rc->pcie;
226 	if (!rc->avail_ib_bar[bar])
229 	rc->avail_ib_bar[bar] = false;
264 cdns_pcie_host_find_min_bar(struct cdns_pcie_rc *rc, u64 size)
270 		if (!rc->avail_ib_bar[bar])
288 cdns_pcie_host_find_max_bar(struct cdns_pcie_rc *rc, u64 size)
294 		if (!rc->avail_ib_bar[bar])
311 static int cdns_pcie_host_bar_config(struct cdns_pcie_rc *rc,
315 	struct cdns_pcie *pcie = &rc->pcie;
341 		bar = cdns_pcie_host_find_min_bar(rc, size);
343 			ret = cdns_pcie_host_bar_ib_config(rc, bar, cpu_addr,
361 		bar = cdns_pcie_host_find_max_bar(rc, size);
369 		ret = cdns_pcie_host_bar_ib_config(rc, bar, cpu_addr, winsize,
394 static int cdns_pcie_host_map_dma_ranges(struct cdns_pcie_rc *rc)
396 	struct cdns_pcie *pcie = &rc->pcie;
404 	bridge = pci_host_bridge_from_priv(rc);
411 		err = cdns_pcie_host_bar_ib_config(rc, RP_NO_BAR, 0x0,
421 		err = cdns_pcie_host_bar_config(rc, entry);
431 static int cdns_pcie_host_init_address_translation(struct cdns_pcie_rc *rc)
433 	struct cdns_pcie *pcie = &rc->pcie;
434 	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(rc);
435 	struct resource *cfg_res = rc->cfg_res;
485 	return cdns_pcie_host_map_dma_ranges(rc);
489 			       struct cdns_pcie_rc *rc)
493 	err = cdns_pcie_host_init_root_port(rc);
497 	return cdns_pcie_host_init_address_translation(rc);
500 int cdns_pcie_host_setup(struct cdns_pcie_rc *rc)
502 	struct device *dev = rc->pcie.dev;
511 	bridge = pci_host_bridge_from_priv(rc);
515 	pcie = &rc->pcie;
518 	rc->vendor_id = 0xffff;
519 	of_property_read_u32(np, "vendor-id", &rc->vendor_id);
521 	rc->device_id = 0xffff;
522 	of_property_read_u32(np, "device-id", &rc->device_id);
531 	rc->cfg_base = devm_pci_remap_cfg_resource(dev, res);
532 	if (IS_ERR(rc->cfg_base))
533 		return PTR_ERR(rc->cfg_base);
534 	rc->cfg_res = res;
536 	if (rc->quirk_detect_quiet_flag)
537 		cdns_pcie_detect_quiet_min_delay_set(&rc->pcie);
547 	ret = cdns_pcie_host_start_link(rc);
552 		rc->avail_ib_bar[bar] = true;
554 	ret = cdns_pcie_host_init(dev, rc);