controller/dwc/pcie-qcom.c

24 #include <linux/pci.h>
34 #include "../../pci.h"
240 	struct dw_pcie *pci;
269 static int qcom_pcie_start_link(struct dw_pcie *pci)
271 	struct qcom_pcie *pcie = to_qcom_pcie(pci);
280 static void qcom_pcie_clear_aspm_l0s(struct dw_pcie *pci)
282 	struct qcom_pcie *pcie = to_qcom_pcie(pci);
289 	offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
291 	dw_pcie_dbi_ro_wr_en(pci);
293 	val = readl(pci->dbi_base + offset + PCI_EXP_LNKCAP);
295 	writel(val, pci->dbi_base + offset + PCI_EXP_LNKCAP);
297 	dw_pcie_dbi_ro_wr_dis(pci);
300 static void qcom_pcie_clear_hpc(struct dw_pcie *pci)
302 	u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
305 	dw_pcie_dbi_ro_wr_en(pci);
307 	val = readl(pci->dbi_base + offset + PCI_EXP_SLTCAP);
309 	writel(val, pci->dbi_base + offset + PCI_EXP_SLTCAP);
311 	dw_pcie_dbi_ro_wr_dis(pci);
327 	struct dw_pcie *pci = pcie->pci;
328 	struct device *dev = pci->dev;
356 	res->resets[0].id = "pci";
387 	struct dw_pcie *pci = pcie->pci;
388 	struct device *dev = pci->dev;
417 	struct dw_pcie *pci = pcie->pci;
418 	struct device *dev = pci->dev;
465 	       pci->dbi_base + AXI_MSTR_RESP_COMP_CTRL0);
467 	       pci->dbi_base + AXI_MSTR_RESP_COMP_CTRL1);
469 	qcom_pcie_clear_hpc(pcie->pci);
477 	struct dw_pcie *pci = pcie->pci;
478 	struct device *dev = pci->dev;
510 	struct dw_pcie *pci = pcie->pci;
511 	struct device *dev = pci->dev;
554 	qcom_pcie_clear_hpc(pcie->pci);
572 	struct dw_pcie *pci = pcie->pci;
573 	struct device *dev = pci->dev;
606 	struct dw_pcie *pci = pcie->pci;
607 	struct device *dev = pci->dev;
651 	qcom_pcie_clear_hpc(pcie->pci);
659 	struct dw_pcie *pci = pcie->pci;
660 	struct device *dev = pci->dev;
709 	struct dw_pcie *pci = pcie->pci;
710 	struct device *dev = pci->dev;
741 	struct dw_pcie *pci = pcie->pci;
742 	struct device *dev = pci->dev;
780 	struct dw_pcie *pci = pcie->pci;
781 	struct device *dev = pci->dev;
824 	struct dw_pcie *pci = pcie->pci;
825 	u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
842 	writel(PCI_COMMAND_MASTER, pci->dbi_base + PCI_COMMAND);
844 	dw_pcie_dbi_ro_wr_en(pci);
846 	writel(PCIE_CAP_SLOT_VAL, pci->dbi_base + offset + PCI_EXP_SLTCAP);
848 	val = readl(pci->dbi_base + offset + PCI_EXP_LNKCAP);
850 	writel(val, pci->dbi_base + offset + PCI_EXP_LNKCAP);
852 	writel(PCI_EXP_DEVCTL2_COMP_TMOUT_DIS, pci->dbi_base + offset +
855 	dw_pcie_dbi_ro_wr_dis(pci);
863 	struct dw_pcie *pci = pcie->pci;
864 	struct device *dev = pci->dev;
917 	struct dw_pcie *pci = pcie->pci;
918 	struct device *dev = pci->dev;
989 	qcom_pcie_clear_aspm_l0s(pcie->pci);
990 	qcom_pcie_clear_hpc(pcie->pci);
1009 	struct dw_pcie_rp *pp = &pcie->pci->pp;
1033 	struct device *dev = pcie->pci->dev;
1102 	struct dw_pcie *pci = pcie->pci;
1103 	struct device *dev = pci->dev;
1133 	struct device *dev = pcie->pci->dev;
1161 	struct dw_pcie *pci = pcie->pci;
1162 	u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
1180 		pci->dbi_base + GEN3_RELATED_OFF);
1189 	dw_pcie_dbi_ro_wr_en(pci);
1191 	writel(PCIE_CAP_SLOT_VAL, pci->dbi_base + offset + PCI_EXP_SLTCAP);
1193 	val = readl(pci->dbi_base + offset + PCI_EXP_LNKCAP);
1195 	writel(val, pci->dbi_base + offset + PCI_EXP_LNKCAP);
1197 	writel(PCI_EXP_DEVCTL2_COMP_TMOUT_DIS, pci->dbi_base + offset +
1200 	dw_pcie_dbi_ro_wr_dis(pci);
1208 static int qcom_pcie_link_up(struct dw_pcie *pci)
1210 	u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
1211 	u16 val = readw(pci->dbi_base + offset + PCI_EXP_LNKSTA);
1218 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
1219 	struct qcom_pcie *pcie = to_qcom_pcie(pci);
1264 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
1265 	struct qcom_pcie *pcie = to_qcom_pcie(pci);
1274 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
1275 	struct qcom_pcie *pcie = to_qcom_pcie(pci);
1405 	struct dw_pcie *pci = pcie->pci;
1408 	pcie->icc_mem = devm_of_icc_get(pci->dev, "pcie-mem");
1421 		dev_err(pci->dev, "failed to set interconnect bandwidth: %d\n",
1431 	struct dw_pcie *pci = pcie->pci;
1439 	offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
1440 	status = readw(pci->dbi_base + offset + PCI_EXP_LNKSTA);
1451 		dev_err(pci->dev, "failed to set interconnect bandwidth: %d\n",
1480 	struct dw_pcie *pci = pcie->pci;
1481 	struct device *dev = pci->dev;
1500 	struct dw_pcie *pci;
1513 	pci = devm_kzalloc(dev, sizeof(*pci), GFP_KERNEL);
1514 	if (!pci)
1522 	pci->dev = dev;
1523 	pci->ops = &dw_pcie_ops;
1524 	pp = &pci->pp;
1526 	pcie->pci = pci;
1632 	if (!dw_pcie_link_up(pcie->pci)) {
1633 		qcom_pcie_host_deinit(&pcie->pci->pp);
1646 		ret = qcom_pcie_host_init(&pcie->pci->pp);