116 lines
3.5 KiB
Diff
116 lines
3.5 KiB
Diff
From db9d6d790968fd6df9faa7fa1f51967e05afd492 Mon Sep 17 00:00:00 2001
|
|
From: Ray Jui <rjui@broadcom.com>
|
|
Date: Mon, 27 Jul 2015 15:42:18 -0700
|
|
Subject: [PATCH 1/4] PCI: iproc: enable arm64 support for iProc PCIe
|
|
|
|
PCI: iproc: Add arm64 support
|
|
|
|
Add arm64 support to the iProc PCIe driver.
|
|
|
|
Note that on arm32, bus->sysdata points to the arm32-specific
|
|
pci_sys_data struct, and pci_sys_data.private_data contains the
|
|
iproc_pcie pointer. For arm64, there's nothing corresponding to
|
|
pci_sys_data, so we keep the iproc_pcie pointer directly in
|
|
bus->sysdata.
|
|
|
|
In addition, arm64 does IRQ mapping in pcibios_add_device(), so it
|
|
doesn't need pci_fixup_irqs() as arm32 does.
|
|
|
|
Signed-off-by: Ray Jui <rjui@broadcom.com>
|
|
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
|
|
Reviewed-by: Scott Branden <sbranden@broadcom.com>
|
|
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
|
|
Signed-off-by: Olof Johansson <olof@lixom.net>
|
|
---
|
|
drivers/pci/host/pcie-iproc.c | 27 ++++++++++++++++++++-------
|
|
drivers/pci/host/pcie-iproc.h | 4 +++-
|
|
2 files changed, 23 insertions(+), 8 deletions(-)
|
|
|
|
--- a/drivers/pci/host/pcie-iproc.c
|
|
+++ b/drivers/pci/host/pcie-iproc.c
|
|
@@ -58,9 +58,17 @@
|
|
#define SYS_RC_INTX_EN 0x330
|
|
#define SYS_RC_INTX_MASK 0xf
|
|
|
|
-static inline struct iproc_pcie *sys_to_pcie(struct pci_sys_data *sys)
|
|
+static inline struct iproc_pcie *iproc_data(struct pci_bus *bus)
|
|
{
|
|
- return sys->private_data;
|
|
+ struct iproc_pcie *pcie;
|
|
+#ifdef CONFIG_ARM
|
|
+ struct pci_sys_data *sys = bus->sysdata;
|
|
+
|
|
+ pcie = sys->private_data;
|
|
+#else
|
|
+ pcie = bus->sysdata;
|
|
+#endif
|
|
+ return pcie;
|
|
}
|
|
|
|
/**
|
|
@@ -71,8 +79,7 @@ static void __iomem *iproc_pcie_map_cfg_
|
|
unsigned int devfn,
|
|
int where)
|
|
{
|
|
- struct pci_sys_data *sys = bus->sysdata;
|
|
- struct iproc_pcie *pcie = sys_to_pcie(sys);
|
|
+ struct iproc_pcie *pcie = iproc_data(bus);
|
|
unsigned slot = PCI_SLOT(devfn);
|
|
unsigned fn = PCI_FUNC(devfn);
|
|
unsigned busno = bus->number;
|
|
@@ -186,6 +193,7 @@ static void iproc_pcie_enable(struct ipr
|
|
int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
|
|
{
|
|
int ret;
|
|
+ void *sysdata;
|
|
struct pci_bus *bus;
|
|
|
|
if (!pcie || !pcie->dev || !pcie->base)
|
|
@@ -205,10 +213,13 @@ int iproc_pcie_setup(struct iproc_pcie *
|
|
|
|
iproc_pcie_reset(pcie);
|
|
|
|
+#ifdef CONFIG_ARM
|
|
pcie->sysdata.private_data = pcie;
|
|
-
|
|
- bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops,
|
|
- &pcie->sysdata, res);
|
|
+ sysdata = &pcie->sysdata;
|
|
+#else
|
|
+ sysdata = pcie;
|
|
+#endif
|
|
+ bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops, sysdata, res);
|
|
if (!bus) {
|
|
dev_err(pcie->dev, "unable to create PCI root bus\n");
|
|
ret = -ENOMEM;
|
|
@@ -226,7 +237,9 @@ int iproc_pcie_setup(struct iproc_pcie *
|
|
|
|
pci_scan_child_bus(bus);
|
|
pci_assign_unassigned_bus_resources(bus);
|
|
+#ifdef CONFIG_ARM
|
|
pci_fixup_irqs(pci_common_swizzle, pcie->map_irq);
|
|
+#endif
|
|
pci_bus_add_devices(bus);
|
|
|
|
return 0;
|
|
--- a/drivers/pci/host/pcie-iproc.h
|
|
+++ b/drivers/pci/host/pcie-iproc.h
|
|
@@ -21,7 +21,7 @@
|
|
* @dev: pointer to device data structure
|
|
* @base: PCIe host controller I/O register base
|
|
* @resources: linked list of all PCI resources
|
|
- * @sysdata: Per PCI controller data
|
|
+ * @sysdata: Per PCI controller data (ARM-specific)
|
|
* @root_bus: pointer to root bus
|
|
* @phy: optional PHY device that controls the Serdes
|
|
* @irqs: interrupt IDs
|
|
@@ -29,7 +29,9 @@
|
|
struct iproc_pcie {
|
|
struct device *dev;
|
|
void __iomem *base;
|
|
+#ifdef CONFIG_ARM
|
|
struct pci_sys_data sysdata;
|
|
+#endif
|
|
struct pci_bus *root_bus;
|
|
struct phy *phy;
|
|
int irqs[IPROC_PCIE_MAX_NUM_IRQS];
|