5 files changed, 88 insertions, 54 deletions

diff --git a/drivers/pci/host/pci-xgene-msi.c b/drivers/pci/host/pci-xgene-msi.c
index a6456b578269..1f38d0836751 100644
--- a/drivers/pci/host/pci-xgene-msi.c
+++ b/drivers/pci/host/pci-xgene-msi.c
@@ -360,16 +360,16 @@ static void xgene_msi_isr(struct irq_desc *desc)
 	chained_irq_exit(chip, desc);
 }
 
+static enum cpuhp_state pci_xgene_online;
+
 static int xgene_msi_remove(struct platform_device *pdev)
 {
-	int virq, i;
 	struct xgene_msi *msi = platform_get_drvdata(pdev);
 
-	for (i = 0; i < NR_HW_IRQS; i++) {
-		virq = msi->msi_groups[i].gic_irq;
-		if (virq != 0)
-			irq_set_chained_handler_and_data(virq, NULL, NULL);
-	}
+	if (pci_xgene_online)
+		cpuhp_remove_state(pci_xgene_online);
+	cpuhp_remove_state(CPUHP_PCI_XGENE_DEAD);
+
 	kfree(msi->msi_groups);
 
 	kfree(msi->bitmap);
@@ -427,7 +427,7 @@ static int xgene_msi_hwirq_alloc(unsigned int cpu)
 	return 0;
 }
 
-static void xgene_msi_hwirq_free(unsigned int cpu)
+static int xgene_msi_hwirq_free(unsigned int cpu)
 {
 	struct xgene_msi *msi = &xgene_msi_ctrl;
 	struct xgene_msi_group *msi_group;
@@ -441,33 +441,9 @@ static void xgene_msi_hwirq_free(unsigned int cpu)
 		irq_set_chained_handler_and_data(msi_group->gic_irq, NULL,
 						 NULL);
 	}
+	return 0;
 }
 
-static int xgene_msi_cpu_callback(struct notifier_block *nfb,
-				  unsigned long action, void *hcpu)
-{
-	unsigned cpu = (unsigned long)hcpu;
-
-	switch (action) {
-	case CPU_ONLINE:
-	case CPU_ONLINE_FROZEN:
-		xgene_msi_hwirq_alloc(cpu);
-		break;
-	case CPU_DEAD:
-	case CPU_DEAD_FROZEN:
-		xgene_msi_hwirq_free(cpu);
-		break;
-	default:
-		break;
-	}
-
-	return NOTIFY_OK;
-}
-
-static struct notifier_block xgene_msi_cpu_notifier = {
-	.notifier_call = xgene_msi_cpu_callback,
-};
-
 static const struct of_device_id xgene_msi_match_table[] = {
 	{.compatible = "apm,xgene1-msi"},
 	{},
@@ -478,7 +454,6 @@ static int xgene_msi_probe(struct platform_device *pdev)
 	struct resource *res;
 	int rc, irq_index;
 	struct xgene_msi *xgene_msi;
-	unsigned int cpu;
 	int virt_msir;
 	u32 msi_val, msi_idx;
 
@@ -540,28 +515,22 @@ static int xgene_msi_probe(struct platform_device *pdev)
 		}
 	}
 
-	cpu_notifier_register_begin();
-
-	for_each_online_cpu(cpu)
-		if (xgene_msi_hwirq_alloc(cpu)) {
-			dev_err(&pdev->dev, "failed to register MSI handlers\n");
-			cpu_notifier_register_done();
-			goto error;
-		}
-
-	rc = __register_hotcpu_notifier(&xgene_msi_cpu_notifier);
-	if (rc) {
-		dev_err(&pdev->dev, "failed to add CPU MSI notifier\n");
-		cpu_notifier_register_done();
-		goto error;
-	}
-
-	cpu_notifier_register_done();
+	rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "pci/xgene:online",
+			       xgene_msi_hwirq_alloc, NULL);
+	if (rc)
+		goto err_cpuhp;
+	pci_xgene_online = rc;
+	rc = cpuhp_setup_state(CPUHP_PCI_XGENE_DEAD, "pci/xgene:dead", NULL,
+			       xgene_msi_hwirq_free);
+	if (rc)
+		goto err_cpuhp;
 
 	dev_info(&pdev->dev, "APM X-Gene PCIe MSI driver loaded\n");
 
 	return 0;
 
+err_cpuhp:
+	dev_err(&pdev->dev, "failed to add CPU MSI notifier\n");
 error:
 	xgene_msi_remove(pdev);
 	return rc;
diff --git a/drivers/pci/host/pcie-designware-plat.c b/drivers/pci/host/pcie-designware-plat.c
index 8df6312ed300..1a02038c4640 100644
--- a/drivers/pci/host/pcie-designware-plat.c
+++ b/drivers/pci/host/pcie-designware-plat.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
  *
- * Authors: Joao Pinto <jpmpinto@gmail.com>
+ * Authors: Joao Pinto <Joao.Pinto@synopsys.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 035f50c03281..bed19994c1e9 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -637,8 +637,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
 		}
 	}
 
-	pp->iatu_unroll_enabled = dw_pcie_iatu_unroll_enabled(pp);
-
 	if (pp->ops->host_init)
 		pp->ops->host_init(pp);
 
@@ -809,6 +807,11 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
 {
 	u32 val;
 
+	/* get iATU unroll support */
+	pp->iatu_unroll_enabled = dw_pcie_iatu_unroll_enabled(pp);
+	dev_dbg(pp->dev, "iATU unroll: %s\n",
+		pp->iatu_unroll_enabled ? "enabled" : "disabled");
+
 	/* set the number of lanes */
 	val = dw_pcie_readl_rc(pp, PCIE_PORT_LINK_CONTROL);
 	val &= ~PORT_LINK_MODE_MASK;
diff --git a/drivers/pci/host/pcie-qcom.c b/drivers/pci/host/pcie-qcom.c
index ef0a84c7a588..35936409b2d4 100644
--- a/drivers/pci/host/pcie-qcom.c
+++ b/drivers/pci/host/pcie-qcom.c
@@ -533,11 +533,11 @@ static int qcom_pcie_probe(struct platform_device *pdev)
 	if (IS_ERR(pcie->phy))
 		return PTR_ERR(pcie->phy);
 
+	pp->dev = dev;
 	ret = pcie->ops->get_resources(pcie);
 	if (ret)
 		return ret;
 
-	pp->dev = dev;
 	pp->root_bus_nr = -1;
 	pp->ops = &qcom_pcie_dw_ops;
 
diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c
index e0b22dab9b7a..e04f69beb42d 100644
--- a/drivers/pci/host/pcie-rockchip.c
+++ b/drivers/pci/host/pcie-rockchip.c
@@ -190,6 +190,9 @@ struct rockchip_pcie {
 	struct	reset_control *mgmt_rst;
 	struct	reset_control *mgmt_sticky_rst;
 	struct	reset_control *pipe_rst;
+	struct	reset_control *pm_rst;
+	struct	reset_control *aclk_rst;
+	struct	reset_control *pclk_rst;
 	struct	clk *aclk_pcie;
 	struct	clk *aclk_perf_pcie;
 	struct	clk *hclk_pcie;
@@ -408,6 +411,44 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip)
 
 	gpiod_set_value(rockchip->ep_gpio, 0);
 
+	err = reset_control_assert(rockchip->aclk_rst);
+	if (err) {
+		dev_err(dev, "assert aclk_rst err %d\n", err);
+		return err;
+	}
+
+	err = reset_control_assert(rockchip->pclk_rst);
+	if (err) {
+		dev_err(dev, "assert pclk_rst err %d\n", err);
+		return err;
+	}
+
+	err = reset_control_assert(rockchip->pm_rst);
+	if (err) {
+		dev_err(dev, "assert pm_rst err %d\n", err);
+		return err;
+	}
+
+	udelay(10);
+
+	err = reset_control_deassert(rockchip->pm_rst);
+	if (err) {
+		dev_err(dev, "deassert pm_rst err %d\n", err);
+		return err;
+	}
+
+	err = reset_control_deassert(rockchip->aclk_rst);
+	if (err) {
+		dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err);
+		return err;
+	}
+
+	err = reset_control_deassert(rockchip->pclk_rst);
+	if (err) {
+		dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err);
+		return err;
+	}
+
 	err = phy_init(rockchip->phy);
 	if (err < 0) {
 		dev_err(dev, "fail to init phy, err %d\n", err);
@@ -781,6 +822,27 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip)
 		return PTR_ERR(rockchip->pipe_rst);
 	}
 
+	rockchip->pm_rst = devm_reset_control_get(dev, "pm");
+	if (IS_ERR(rockchip->pm_rst)) {
+		if (PTR_ERR(rockchip->pm_rst) != -EPROBE_DEFER)
+			dev_err(dev, "missing pm reset property in node\n");
+		return PTR_ERR(rockchip->pm_rst);
+	}
+
+	rockchip->pclk_rst = devm_reset_control_get(dev, "pclk");
+	if (IS_ERR(rockchip->pclk_rst)) {
+		if (PTR_ERR(rockchip->pclk_rst) != -EPROBE_DEFER)
+			dev_err(dev, "missing pclk reset property in node\n");
+		return PTR_ERR(rockchip->pclk_rst);
+	}
+
+	rockchip->aclk_rst = devm_reset_control_get(dev, "aclk");
+	if (IS_ERR(rockchip->aclk_rst)) {
+		if (PTR_ERR(rockchip->aclk_rst) != -EPROBE_DEFER)
+			dev_err(dev, "missing aclk reset property in node\n");
+		return PTR_ERR(rockchip->aclk_rst);
+	}
+
 	rockchip->ep_gpio = devm_gpiod_get(dev, "ep", GPIOD_OUT_HIGH);
 	if (IS_ERR(rockchip->ep_gpio)) {
 		dev_err(dev, "missing ep-gpios property in node\n");