diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.10/0078-PCI-mvebu-add-support-for-MSI.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.10/0078-PCI-mvebu-add-support-for-MSI.patch | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/target/linux/mvebu/patches-3.10/0078-PCI-mvebu-add-support-for-MSI.patch b/target/linux/mvebu/patches-3.10/0078-PCI-mvebu-add-support-for-MSI.patch deleted file mode 100644 index 9121b82dc6..0000000000 --- a/target/linux/mvebu/patches-3.10/0078-PCI-mvebu-add-support-for-MSI.patch +++ /dev/null @@ -1,109 +0,0 @@ -From be448338edda73460dc3e8c005b17edddf1c1b4f Mon Sep 17 00:00:00 2001 -From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Date: Thu, 6 Jun 2013 18:27:16 +0200 -Subject: [PATCH 078/203] PCI: mvebu: add support for MSI - -This commit adds support for Message Signaled Interrupts in the -Marvell PCIe host controller. The work is very simple: it simply gets -a reference to the msi_chip associated to the PCIe controller thanks -to the msi-parent DT property, and stores this reference in the -pci_bus structure. This is enough to let the Linux PCI core use the -functions of msi_chip to setup and teardown MSIs. - -Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Reviewed-by: Thierry Reding <thierry.reding@gmail.com> -Acked-by: Bjorn Helgaas <bhelgaas@google.com> ---- - .../devicetree/bindings/pci/mvebu-pci.txt | 3 +++ - drivers/pci/host/pci-mvebu.c | 26 ++++++++++++++++++++++ - 2 files changed, 29 insertions(+) - ---- a/Documentation/devicetree/bindings/pci/mvebu-pci.txt -+++ b/Documentation/devicetree/bindings/pci/mvebu-pci.txt -@@ -14,6 +14,8 @@ Mandatory properties: - interfaces, and ranges describing the MBus windows needed to access - the memory and I/O regions of each PCIe interface. - -+- msi-parent: Link to the hardware entity that serves as the Message -+ Signaled Interrupt controller for this PCI controller. - The ranges describing the MMIO registers have the following layout: - - 0x82000000 0 r MBUS_ID(0xf0, 0x01) r 0 s -@@ -85,6 +87,7 @@ pcie-controller { - #size-cells = <2>; - - bus-range = <0x00 0xff>; -+ msi-parent = <&mpic>; - - ranges = - <0x82000000 0 0x40000 MBUS_ID(0xf0, 0x01) 0x40000 0 0x00002000 /* Port 0.0 registers */ ---- a/drivers/pci/host/pci-mvebu.c -+++ b/drivers/pci/host/pci-mvebu.c -@@ -11,6 +11,7 @@ - #include <linux/clk.h> - #include <linux/module.h> - #include <linux/mbus.h> -+#include <linux/msi.h> - #include <linux/slab.h> - #include <linux/platform_device.h> - #include <linux/of_address.h> -@@ -103,6 +104,7 @@ struct mvebu_pcie_port; - struct mvebu_pcie { - struct platform_device *pdev; - struct mvebu_pcie_port *ports; -+ struct msi_chip *msi; - struct resource io; - struct resource realio; - struct resource mem; -@@ -673,6 +675,12 @@ static struct pci_bus *mvebu_pcie_scan_b - return bus; - } - -+void mvebu_pcie_add_bus(struct pci_bus *bus) -+{ -+ struct mvebu_pcie *pcie = sys_to_pcie(bus->sysdata); -+ bus->msi = pcie->msi; -+} -+ - resource_size_t mvebu_pcie_align_resource(struct pci_dev *dev, - const struct resource *res, - resource_size_t start, -@@ -709,6 +717,7 @@ static void __init mvebu_pcie_enable(str - hw.map_irq = mvebu_pcie_map_irq; - hw.ops = &mvebu_pcie_ops; - hw.align_resource = mvebu_pcie_align_resource; -+ hw.add_bus = mvebu_pcie_add_bus; - - pci_common_init(&hw); - } -@@ -733,6 +742,21 @@ mvebu_pcie_map_registers(struct platform - return devm_request_and_ioremap(&pdev->dev, ®s); - } - -+static void __init mvebu_pcie_msi_enable(struct mvebu_pcie *pcie) -+{ -+ struct device_node *msi_node; -+ -+ msi_node = of_parse_phandle(pcie->pdev->dev.of_node, -+ "msi-parent", 0); -+ if (!msi_node) -+ return; -+ -+ pcie->msi = of_pci_find_msi_chip_by_node(msi_node); -+ -+ if (pcie->msi) -+ pcie->msi->dev = &pcie->pdev->dev; -+} -+ - #define DT_FLAGS_TO_TYPE(flags) (((flags) >> 24) & 0x03) - #define DT_TYPE_IO 0x1 - #define DT_TYPE_MEM32 0x2 -@@ -911,6 +935,8 @@ static int __init mvebu_pcie_probe(struc - i++; - } - -+ mvebu_pcie_msi_enable(pcie); -+ - mvebu_pcie_enable(pcie); - - return 0; |