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authorBjorn Helgaas <bhelgaas@google.com>2020-06-04 12:59:15 -0500
committerBjorn Helgaas <bhelgaas@google.com>2020-06-04 12:59:15 -0500
commitb9fcf4910b72dd4d94b36989df5d6bcf7795c18d (patch)
treecf1d51fe10b942f98b72c3bc945dbc6e2a628f67 /drivers/pci
parent712879510fa4930b65748046426ac4a730512bba (diff)
parent8d7e33d6811fbd24d3a1476a1b481b704975352a (diff)
Merge branch 'remotes/lorenzo/pci/dwc'
- Simplify computation of msix_tbl (Jiri Slaby) - Make hisi_pcie_platform_ops static (Zou Wei) - Warn about resources above 4G (Alan Mikhak) - Make intel_pcie_cpu_addr() static (Jason Yan) - Use devm_platform_ioremap_resource_byname() to simplify code and improve error checking (Wei Yongjun) - Fix inner MSI IRQ domain registration so it doesn't confuse debugfs (Marc Zyngier) - Don't use FAST_LINK_MODE on meson (Marc Zyngier) - Add Socionext UniPhier Pro5 PCIe endpoint controller driver and DT description (Kunihiko Hayashi) * remotes/lorenzo/pci/dwc: PCI: uniphier: Add Socionext UniPhier Pro5 PCIe endpoint controller driver dt-bindings: PCI: Add UniPhier PCIe endpoint controller description PCI: dwc: Use private data pointer of "struct irq_domain" to get pcie_port PCI: amlogic: meson: Don't use FAST_LINK_MODE to set up link PCI: dwc: Fix inner MSI IRQ domain registration PCI: dwc: pci-dra7xx: Use devm_platform_ioremap_resource_byname() PCI: dwc: intel: Make intel_pcie_cpu_addr() static PCI: dwc: Program outbound ATU upper limit register PCI: dwc: Make hisi_pcie_platform_ops static PCI: dwc: Clean up computing of msix_tbl
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/controller/dwc/Kconfig14
-rw-r--r--drivers/pci/controller/dwc/Makefile1
-rw-r--r--drivers/pci/controller/dwc/pci-dra7xx.c8
-rw-r--r--drivers/pci/controller/dwc/pci-meson.c4
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-ep.c6
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-host.c4
-rw-r--r--drivers/pci/controller/dwc/pcie-designware.c7
-rw-r--r--drivers/pci/controller/dwc/pcie-designware.h3
-rw-r--r--drivers/pci/controller/dwc/pcie-hisi.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-intel-gw.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-uniphier-ep.c383
11 files changed, 414 insertions, 20 deletions
diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index ce13fd62d161..044a3761c44f 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -280,15 +280,25 @@ config PCIE_TEGRA194_EP
selected. This uses the DesignWare core.
config PCIE_UNIPHIER
- bool "Socionext UniPhier PCIe controllers"
+ bool "Socionext UniPhier PCIe host controllers"
depends on ARCH_UNIPHIER || COMPILE_TEST
depends on OF && HAS_IOMEM
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW_HOST
help
- Say Y here if you want PCIe controller support on UniPhier SoCs.
+ Say Y here if you want PCIe host controller support on UniPhier SoCs.
This driver supports LD20 and PXs3 SoCs.
+config PCIE_UNIPHIER_EP
+ bool "Socionext UniPhier PCIe endpoint controllers"
+ depends on ARCH_UNIPHIER || COMPILE_TEST
+ depends on OF && HAS_IOMEM
+ depends on PCI_ENDPOINT
+ select PCIE_DW_EP
+ help
+ Say Y here if you want PCIe endpoint controller support on
+ UniPhier SoCs. This driver supports Pro5 SoC.
+
config PCIE_AL
bool "Amazon Annapurna Labs PCIe controller"
depends on OF && (ARM64 || COMPILE_TEST)
diff --git a/drivers/pci/controller/dwc/Makefile b/drivers/pci/controller/dwc/Makefile
index 8a637cfcf6e9..a751553fa0db 100644
--- a/drivers/pci/controller/dwc/Makefile
+++ b/drivers/pci/controller/dwc/Makefile
@@ -19,6 +19,7 @@ obj-$(CONFIG_PCIE_HISI_STB) += pcie-histb.o
obj-$(CONFIG_PCI_MESON) += pci-meson.o
obj-$(CONFIG_PCIE_TEGRA194) += pcie-tegra194.o
obj-$(CONFIG_PCIE_UNIPHIER) += pcie-uniphier.o
+obj-$(CONFIG_PCIE_UNIPHIER_EP) += pcie-uniphier-ep.o
# The following drivers are for devices that use the generic ACPI
# pci_root.c driver but don't support standard ECAM config access.
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 3b0e58f2de58..6184ebc9392d 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -840,7 +840,6 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
struct phy **phy;
struct device_link **link;
void __iomem *base;
- struct resource *res;
struct dw_pcie *pci;
struct dra7xx_pcie *dra7xx;
struct device *dev = &pdev->dev;
@@ -877,10 +876,9 @@ static int __init dra7xx_pcie_probe(struct platform_device *pdev)
return irq;
}
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ti_conf");
- base = devm_ioremap(dev, res->start, resource_size(res));
- if (!base)
- return -ENOMEM;
+ base = devm_platform_ioremap_resource_byname(pdev, "ti_conf");
+ if (IS_ERR(base))
+ return PTR_ERR(base);
phy_count = of_property_count_strings(np, "phy-names");
if (phy_count < 0) {
diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c
index 3715dceca1bf..ca59ba9e0ecd 100644
--- a/drivers/pci/controller/dwc/pci-meson.c
+++ b/drivers/pci/controller/dwc/pci-meson.c
@@ -289,11 +289,11 @@ static void meson_pcie_init_dw(struct meson_pcie *mp)
meson_cfg_writel(mp, val, PCIE_CFG0);
val = meson_elb_readl(mp, PCIE_PORT_LINK_CTRL_OFF);
- val &= ~LINK_CAPABLE_MASK;
+ val &= ~(LINK_CAPABLE_MASK | FAST_LINK_MODE);
meson_elb_writel(mp, val, PCIE_PORT_LINK_CTRL_OFF);
val = meson_elb_readl(mp, PCIE_PORT_LINK_CTRL_OFF);
- val |= LINK_CAPABLE_X1 | FAST_LINK_MODE;
+ val |= LINK_CAPABLE_X1;
meson_elb_writel(mp, val, PCIE_PORT_LINK_CTRL_OFF);
val = meson_elb_readl(mp, PCIE_GEN2_CTRL_OFF);
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 1cdcbd102ce8..c815d36905b6 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -433,7 +433,6 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
struct pci_epf_msix_tbl *msix_tbl;
struct pci_epc *epc = ep->epc;
- struct pci_epf_bar *epf_bar;
u32 reg, msg_data, vec_ctrl;
unsigned int aligned_offset;
u32 tbl_offset;
@@ -446,10 +445,7 @@ int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
bir = (tbl_offset & PCI_MSIX_TABLE_BIR);
tbl_offset &= PCI_MSIX_TABLE_OFFSET;
- epf_bar = ep->epf_bar[bir];
- msix_tbl = epf_bar->addr;
- msix_tbl = (struct pci_epf_msix_tbl *)((char *)msix_tbl + tbl_offset);
-
+ msix_tbl = ep->epf_bar[bir]->addr + tbl_offset;
msg_addr = msix_tbl[(interrupt_num - 1)].msg_addr;
msg_data = msix_tbl[(interrupt_num - 1)].msg_data;
vec_ctrl = msix_tbl[(interrupt_num - 1)].vector_ctrl;
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 395feb8ca051..0a4a5aa6fe46 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -236,7 +236,7 @@ static void dw_pcie_irq_domain_free(struct irq_domain *domain,
unsigned int virq, unsigned int nr_irqs)
{
struct irq_data *d = irq_domain_get_irq_data(domain, virq);
- struct pcie_port *pp = irq_data_get_irq_chip_data(d);
+ struct pcie_port *pp = domain->host_data;
unsigned long flags;
raw_spin_lock_irqsave(&pp->lock, flags);
@@ -264,6 +264,8 @@ int dw_pcie_allocate_domains(struct pcie_port *pp)
return -ENOMEM;
}
+ irq_domain_update_bus_token(pp->irq_domain, DOMAIN_BUS_NEXUS);
+
pp->msi_domain = pci_msi_create_irq_domain(fwnode,
&dw_pcie_msi_domain_info,
pp->irq_domain);
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index 681548c88282..c92496e36fd5 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -244,13 +244,16 @@ static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, int index,
u64 pci_addr, u32 size)
{
u32 retries, val;
+ u64 limit_addr = cpu_addr + size - 1;
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_LOWER_BASE,
lower_32_bits(cpu_addr));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_BASE,
upper_32_bits(cpu_addr));
- dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_LIMIT,
- lower_32_bits(cpu_addr + size - 1));
+ dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_LOWER_LIMIT,
+ lower_32_bits(limit_addr));
+ dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_LIMIT,
+ upper_32_bits(limit_addr));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_LOWER_TARGET,
lower_32_bits(pci_addr));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_TARGET,
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index d6e1f397e6b0..656e00f8fbeb 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -112,9 +112,10 @@
#define PCIE_ATU_UNR_REGION_CTRL2 0x04
#define PCIE_ATU_UNR_LOWER_BASE 0x08
#define PCIE_ATU_UNR_UPPER_BASE 0x0C
-#define PCIE_ATU_UNR_LIMIT 0x10
+#define PCIE_ATU_UNR_LOWER_LIMIT 0x10
#define PCIE_ATU_UNR_LOWER_TARGET 0x14
#define PCIE_ATU_UNR_UPPER_TARGET 0x18
+#define PCIE_ATU_UNR_UPPER_LIMIT 0x20
/*
* The default address offset between dbi_base and atu_base. Root controller
diff --git a/drivers/pci/controller/dwc/pcie-hisi.c b/drivers/pci/controller/dwc/pcie-hisi.c
index 6d9e1b2b8f7b..11f5ff711d4d 100644
--- a/drivers/pci/controller/dwc/pcie-hisi.c
+++ b/drivers/pci/controller/dwc/pcie-hisi.c
@@ -362,7 +362,7 @@ static int hisi_pcie_platform_init(struct pci_config_window *cfg)
return 0;
}
-struct pci_ecam_ops hisi_pcie_platform_ops = {
+static struct pci_ecam_ops hisi_pcie_platform_ops = {
.bus_shift = 20,
.init = hisi_pcie_platform_init,
.pci_ops = {
diff --git a/drivers/pci/controller/dwc/pcie-intel-gw.c b/drivers/pci/controller/dwc/pcie-intel-gw.c
index fc2a12212dec..2d8dbb318087 100644
--- a/drivers/pci/controller/dwc/pcie-intel-gw.c
+++ b/drivers/pci/controller/dwc/pcie-intel-gw.c
@@ -453,7 +453,7 @@ static int intel_pcie_msi_init(struct pcie_port *pp)
return 0;
}
-u64 intel_pcie_cpu_addr(struct dw_pcie *pcie, u64 cpu_addr)
+static u64 intel_pcie_cpu_addr(struct dw_pcie *pcie, u64 cpu_addr)
{
return cpu_addr + BUS_IATU_OFFSET;
}
diff --git a/drivers/pci/controller/dwc/pcie-uniphier-ep.c b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
new file mode 100644
index 000000000000..148355960061
--- /dev/null
+++ b/drivers/pci/controller/dwc/pcie-uniphier-ep.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PCIe endpoint controller driver for UniPhier SoCs
+ * Copyright 2018 Socionext Inc.
+ * Author: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/of_device.h>
+#include <linux/pci.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include "pcie-designware.h"
+
+/* Link Glue registers */
+#define PCL_RSTCTRL0 0x0010
+#define PCL_RSTCTRL_AXI_REG BIT(3)
+#define PCL_RSTCTRL_AXI_SLAVE BIT(2)
+#define PCL_RSTCTRL_AXI_MASTER BIT(1)
+#define PCL_RSTCTRL_PIPE3 BIT(0)
+
+#define PCL_RSTCTRL1 0x0020
+#define PCL_RSTCTRL_PERST BIT(0)
+
+#define PCL_RSTCTRL2 0x0024
+#define PCL_RSTCTRL_PHY_RESET BIT(0)
+
+#define PCL_MODE 0x8000
+#define PCL_MODE_REGEN BIT(8)
+#define PCL_MODE_REGVAL BIT(0)
+
+#define PCL_APP_CLK_CTRL 0x8004
+#define PCL_APP_CLK_REQ BIT(0)
+
+#define PCL_APP_READY_CTRL 0x8008
+#define PCL_APP_LTSSM_ENABLE BIT(0)
+
+#define PCL_APP_MSI0 0x8040
+#define PCL_APP_VEN_MSI_TC_MASK GENMASK(10, 8)
+#define PCL_APP_VEN_MSI_VECTOR_MASK GENMASK(4, 0)
+
+#define PCL_APP_MSI1 0x8044
+#define PCL_APP_MSI_REQ BIT(0)
+
+#define PCL_APP_INTX 0x8074
+#define PCL_APP_INTX_SYS_INT BIT(0)
+
+/* assertion time of INTx in usec */
+#define PCL_INTX_WIDTH_USEC 30
+
+struct uniphier_pcie_ep_priv {
+ void __iomem *base;
+ struct dw_pcie pci;
+ struct clk *clk, *clk_gio;
+ struct reset_control *rst, *rst_gio;
+ struct phy *phy;
+ const struct pci_epc_features *features;
+};
+
+#define to_uniphier_pcie(x) dev_get_drvdata((x)->dev)
+
+static void uniphier_pcie_ltssm_enable(struct uniphier_pcie_ep_priv *priv,
+ bool enable)
+{
+ u32 val;
+
+ val = readl(priv->base + PCL_APP_READY_CTRL);
+ if (enable)
+ val |= PCL_APP_LTSSM_ENABLE;
+ else
+ val &= ~PCL_APP_LTSSM_ENABLE;
+ writel(val, priv->base + PCL_APP_READY_CTRL);
+}
+
+static void uniphier_pcie_phy_reset(struct uniphier_pcie_ep_priv *priv,
+ bool assert)
+{
+ u32 val;
+
+ val = readl(priv->base + PCL_RSTCTRL2);
+ if (assert)
+ val |= PCL_RSTCTRL_PHY_RESET;
+ else
+ val &= ~PCL_RSTCTRL_PHY_RESET;
+ writel(val, priv->base + PCL_RSTCTRL2);
+}
+
+static void uniphier_pcie_init_ep(struct uniphier_pcie_ep_priv *priv)
+{
+ u32 val;
+
+ /* set EP mode */
+ val = readl(priv->base + PCL_MODE);
+ val |= PCL_MODE_REGEN | PCL_MODE_REGVAL;
+ writel(val, priv->base + PCL_MODE);
+
+ /* clock request */
+ val = readl(priv->base + PCL_APP_CLK_CTRL);
+ val &= ~PCL_APP_CLK_REQ;
+ writel(val, priv->base + PCL_APP_CLK_CTRL);
+
+ /* deassert PIPE3 and AXI reset */
+ val = readl(priv->base + PCL_RSTCTRL0);
+ val |= PCL_RSTCTRL_AXI_REG | PCL_RSTCTRL_AXI_SLAVE
+ | PCL_RSTCTRL_AXI_MASTER | PCL_RSTCTRL_PIPE3;
+ writel(val, priv->base + PCL_RSTCTRL0);
+
+ uniphier_pcie_ltssm_enable(priv, false);
+
+ msleep(100);
+}
+
+static int uniphier_pcie_start_link(struct dw_pcie *pci)
+{
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+
+ uniphier_pcie_ltssm_enable(priv, true);
+
+ return 0;
+}
+
+static void uniphier_pcie_stop_link(struct dw_pcie *pci)
+{
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+
+ uniphier_pcie_ltssm_enable(priv, false);
+}
+
+static void uniphier_pcie_ep_init(struct dw_pcie_ep *ep)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ enum pci_barno bar;
+
+ for (bar = BAR_0; bar <= BAR_5; bar++)
+ dw_pcie_ep_reset_bar(pci, bar);
+}
+
+static int uniphier_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+ u32 val;
+
+ /*
+ * This makes pulse signal to send INTx to the RC, so this should
+ * be cleared as soon as possible. This sequence is covered with
+ * mutex in pci_epc_raise_irq().
+ */
+ /* assert INTx */
+ val = readl(priv->base + PCL_APP_INTX);
+ val |= PCL_APP_INTX_SYS_INT;
+ writel(val, priv->base + PCL_APP_INTX);
+
+ udelay(PCL_INTX_WIDTH_USEC);
+
+ /* deassert INTx */
+ val &= ~PCL_APP_INTX_SYS_INT;
+ writel(val, priv->base + PCL_APP_INTX);
+
+ return 0;
+}
+
+static int uniphier_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep,
+ u8 func_no, u16 interrupt_num)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+ u32 val;
+
+ val = FIELD_PREP(PCL_APP_VEN_MSI_TC_MASK, func_no)
+ | FIELD_PREP(PCL_APP_VEN_MSI_VECTOR_MASK, interrupt_num - 1);
+ writel(val, priv->base + PCL_APP_MSI0);
+
+ val = readl(priv->base + PCL_APP_MSI1);
+ val |= PCL_APP_MSI_REQ;
+ writel(val, priv->base + PCL_APP_MSI1);
+
+ return 0;
+}
+
+static int uniphier_pcie_ep_raise_irq(struct dw_pcie_ep *ep, u8 func_no,
+ enum pci_epc_irq_type type,
+ u16 interrupt_num)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+
+ switch (type) {
+ case PCI_EPC_IRQ_LEGACY:
+ return uniphier_pcie_ep_raise_legacy_irq(ep);
+ case PCI_EPC_IRQ_MSI:
+ return uniphier_pcie_ep_raise_msi_irq(ep, func_no,
+ interrupt_num);
+ default:
+ dev_err(pci->dev, "UNKNOWN IRQ type (%d)\n", type);
+ }
+
+ return 0;
+}
+
+static const struct pci_epc_features*
+uniphier_pcie_get_features(struct dw_pcie_ep *ep)
+{
+ struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
+ struct uniphier_pcie_ep_priv *priv = to_uniphier_pcie(pci);
+
+ return priv->features;
+}
+
+static const struct dw_pcie_ep_ops uniphier_pcie_ep_ops = {
+ .ep_init = uniphier_pcie_ep_init,
+ .raise_irq = uniphier_pcie_ep_raise_irq,
+ .get_features = uniphier_pcie_get_features,
+};
+
+static int uniphier_add_pcie_ep(struct uniphier_pcie_ep_priv *priv,
+ struct platform_device *pdev)
+{
+ struct dw_pcie *pci = &priv->pci;
+ struct dw_pcie_ep *ep = &pci->ep;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int ret;
+
+ ep->ops = &uniphier_pcie_ep_ops;
+
+ pci->dbi_base2 = devm_platform_ioremap_resource_byname(pdev, "dbi2");
+ if (IS_ERR(pci->dbi_base2))
+ return PTR_ERR(pci->dbi_base2);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space");
+ if (!res)
+ return -EINVAL;
+
+ ep->phys_base = res->start;
+ ep->addr_size = resource_size(res);
+
+ ret = dw_pcie_ep_init(ep);
+ if (ret)
+ dev_err(dev, "Failed to initialize endpoint (%d)\n", ret);
+
+ return ret;
+}
+
+static int uniphier_pcie_ep_enable(struct uniphier_pcie_ep_priv *priv)
+{
+ int ret;
+
+ ret = clk_prepare_enable(priv->clk);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(priv->clk_gio);
+ if (ret)
+ goto out_clk_disable;
+
+ ret = reset_control_deassert(priv->rst);
+ if (ret)
+ goto out_clk_gio_disable;
+
+ ret = reset_control_deassert(priv->rst_gio);
+ if (ret)
+ goto out_rst_assert;
+
+ uniphier_pcie_init_ep(priv);
+
+ uniphier_pcie_phy_reset(priv, true);
+
+ ret = phy_init(priv->phy);
+ if (ret)
+ goto out_rst_gio_assert;
+
+ uniphier_pcie_phy_reset(priv, false);
+
+ return 0;
+
+out_rst_gio_assert:
+ reset_control_assert(priv->rst_gio);
+out_rst_assert:
+ reset_control_assert(priv->rst);
+out_clk_gio_disable:
+ clk_disable_unprepare(priv->clk_gio);
+out_clk_disable:
+ clk_disable_unprepare(priv->clk);
+
+ return ret;
+}
+
+static const struct dw_pcie_ops dw_pcie_ops = {
+ .start_link = uniphier_pcie_start_link,
+ .stop_link = uniphier_pcie_stop_link,
+};
+
+static int uniphier_pcie_ep_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct uniphier_pcie_ep_priv *priv;
+ struct resource *res;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->features = of_device_get_match_data(dev);
+ if (WARN_ON(!priv->features))
+ return -EINVAL;
+
+ priv->pci.dev = dev;
+ priv->pci.ops = &dw_pcie_ops;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
+ priv->pci.dbi_base = devm_pci_remap_cfg_resource(dev, res);
+ if (IS_ERR(priv->pci.dbi_base))
+ return PTR_ERR(priv->pci.dbi_base);
+
+ priv->base = devm_platform_ioremap_resource_byname(pdev, "link");
+ if (IS_ERR(priv->base))
+ return PTR_ERR(priv->base);
+
+ priv->clk_gio = devm_clk_get(dev, "gio");
+ if (IS_ERR(priv->clk_gio))
+ return PTR_ERR(priv->clk_gio);
+
+ priv->rst_gio = devm_reset_control_get_shared(dev, "gio");
+ if (IS_ERR(priv->rst_gio))
+ return PTR_ERR(priv->rst_gio);
+
+ priv->clk = devm_clk_get(dev, "link");
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+
+ priv->rst = devm_reset_control_get_shared(dev, "link");
+ if (IS_ERR(priv->rst))
+ return PTR_ERR(priv->rst);
+
+ priv->phy = devm_phy_optional_get(dev, "pcie-phy");
+ if (IS_ERR(priv->phy)) {
+ ret = PTR_ERR(priv->phy);
+ dev_err(dev, "Failed to get phy (%d)\n", ret);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ ret = uniphier_pcie_ep_enable(priv);
+ if (ret)
+ return ret;
+
+ return uniphier_add_pcie_ep(priv, pdev);
+}
+
+static const struct pci_epc_features uniphier_pro5_data = {
+ .linkup_notifier = false,
+ .msi_capable = true,
+ .msix_capable = false,
+ .align = 1 << 16,
+ .bar_fixed_64bit = BIT(BAR_0) | BIT(BAR_2) | BIT(BAR_4),
+ .reserved_bar = BIT(BAR_4),
+};
+
+static const struct of_device_id uniphier_pcie_ep_match[] = {
+ {
+ .compatible = "socionext,uniphier-pro5-pcie-ep",
+ .data = &uniphier_pro5_data,
+ },
+ { /* sentinel */ },
+};
+
+static struct platform_driver uniphier_pcie_ep_driver = {
+ .probe = uniphier_pcie_ep_probe,
+ .driver = {
+ .name = "uniphier-pcie-ep",
+ .of_match_table = uniphier_pcie_ep_match,
+ .suppress_bind_attrs = true,
+ },
+};
+builtin_platform_driver(uniphier_pcie_ep_driver);