5b4deb6526
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> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
298 lines
9.7 KiB
Plaintext
298 lines
9.7 KiB
Plaintext
* Marvell EBU PCIe interfaces
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Mandatory properties:
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- compatible: one of the following values:
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marvell,armada-370-pcie
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marvell,armada-xp-pcie
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marvell,kirkwood-pcie
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- #address-cells, set to <3>
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- #size-cells, set to <2>
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- #interrupt-cells, set to <1>
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- bus-range: PCI bus numbers covered
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- device_type, set to "pci"
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- ranges: ranges describing the MMIO registers to control the PCIe
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interfaces, and ranges describing the MBus windows needed to access
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the memory and I/O regions of each PCIe interface.
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- msi-parent: Link to the hardware entity that serves as the Message
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Signaled Interrupt controller for this PCI controller.
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The ranges describing the MMIO registers have the following layout:
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0x82000000 0 r MBUS_ID(0xf0, 0x01) r 0 s
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where:
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* r is a 32-bits value that gives the offset of the MMIO
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registers of this PCIe interface, from the base of the internal
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registers.
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* s is a 32-bits value that give the size of this MMIO
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registers area. This range entry translates the '0x82000000 0 r' PCI
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address into the 'MBUS_ID(0xf0, 0x01) r' CPU address, which is part
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of the internal register window (as identified by MBUS_ID(0xf0,
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0x01)).
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The ranges describing the MBus windows have the following layout:
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0x8t000000 s 0 MBUS_ID(w, a) 0 1 0
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where:
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* t is the type of the MBus window (as defined by the standard PCI DT
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bindings), 1 for I/O and 2 for memory.
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* s is the PCI slot that corresponds to this PCIe interface
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* w is the 'target ID' value for the MBus window
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* a the 'attribute' value for the MBus window.
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Since the location and size of the different MBus windows is not fixed in
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hardware, and only determined in runtime, those ranges cover the full first
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4 GB of the physical address space, and do not translate into a valid CPU
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address.
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In addition, the device tree node must have sub-nodes describing each
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PCIe interface, having the following mandatory properties:
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- reg: used only for interrupt mapping, so only the first four bytes
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are used to refer to the correct bus number and device number.
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- assigned-addresses: reference to the MMIO registers used to control
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this PCIe interface.
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- clocks: the clock associated to this PCIe interface
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- marvell,pcie-port: the physical PCIe port number
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- status: either "disabled" or "okay"
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- device_type, set to "pci"
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- #address-cells, set to <3>
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- #size-cells, set to <2>
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- #interrupt-cells, set to <1>
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- ranges, translating the MBus windows ranges of the parent node into
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standard PCI addresses.
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- interrupt-map-mask and interrupt-map, standard PCI properties to
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define the mapping of the PCIe interface to interrupt numbers.
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and the following optional properties:
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- marvell,pcie-lane: the physical PCIe lane number, for ports having
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multiple lanes. If this property is not found, we assume that the
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value is 0.
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Example:
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pcie-controller {
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compatible = "marvell,armada-xp-pcie";
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status = "disabled";
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device_type = "pci";
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#address-cells = <3>;
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#size-cells = <2>;
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bus-range = <0x00 0xff>;
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msi-parent = <&mpic>;
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ranges =
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<0x82000000 0 0x40000 MBUS_ID(0xf0, 0x01) 0x40000 0 0x00002000 /* Port 0.0 registers */
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0x82000000 0 0x42000 MBUS_ID(0xf0, 0x01) 0x42000 0 0x00002000 /* Port 2.0 registers */
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0x82000000 0 0x44000 MBUS_ID(0xf0, 0x01) 0x44000 0 0x00002000 /* Port 0.1 registers */
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0x82000000 0 0x48000 MBUS_ID(0xf0, 0x01) 0x48000 0 0x00002000 /* Port 0.2 registers */
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0x82000000 0 0x4c000 MBUS_ID(0xf0, 0x01) 0x4c000 0 0x00002000 /* Port 0.3 registers */
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0x82000000 0 0x80000 MBUS_ID(0xf0, 0x01) 0x80000 0 0x00002000 /* Port 1.0 registers */
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0x82000000 0 0x82000 MBUS_ID(0xf0, 0x01) 0x82000 0 0x00002000 /* Port 3.0 registers */
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0x82000000 0 0x84000 MBUS_ID(0xf0, 0x01) 0x84000 0 0x00002000 /* Port 1.1 registers */
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0x82000000 0 0x88000 MBUS_ID(0xf0, 0x01) 0x88000 0 0x00002000 /* Port 1.2 registers */
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0x82000000 0 0x8c000 MBUS_ID(0xf0, 0x01) 0x8c000 0 0x00002000 /* Port 1.3 registers */
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0x82000000 0x1 0 MBUS_ID(0x04, 0xe8) 0 1 0 /* Port 0.0 MEM */
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0x81000000 0x1 0 MBUS_ID(0x04, 0xe0) 0 1 0 /* Port 0.0 IO */
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0x82000000 0x2 0 MBUS_ID(0x04, 0xd8) 0 1 0 /* Port 0.1 MEM */
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0x81000000 0x2 0 MBUS_ID(0x04, 0xd0) 0 1 0 /* Port 0.1 IO */
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0x82000000 0x3 0 MBUS_ID(0x04, 0xb8) 0 1 0 /* Port 0.2 MEM */
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0x81000000 0x3 0 MBUS_ID(0x04, 0xb0) 0 1 0 /* Port 0.2 IO */
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0x82000000 0x4 0 MBUS_ID(0x04, 0x78) 0 1 0 /* Port 0.3 MEM */
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0x81000000 0x4 0 MBUS_ID(0x04, 0x70) 0 1 0 /* Port 0.3 IO */
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0x82000000 0x5 0 MBUS_ID(0x08, 0xe8) 0 1 0 /* Port 1.0 MEM */
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0x81000000 0x5 0 MBUS_ID(0x08, 0xe0) 0 1 0 /* Port 1.0 IO */
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0x82000000 0x6 0 MBUS_ID(0x08, 0xd8) 0 1 0 /* Port 1.1 MEM */
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0x81000000 0x6 0 MBUS_ID(0x08, 0xd0) 0 1 0 /* Port 1.1 IO */
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0x82000000 0x7 0 MBUS_ID(0x08, 0xb8) 0 1 0 /* Port 1.2 MEM */
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0x81000000 0x7 0 MBUS_ID(0x08, 0xb0) 0 1 0 /* Port 1.2 IO */
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0x82000000 0x8 0 MBUS_ID(0x08, 0x78) 0 1 0 /* Port 1.3 MEM */
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0x81000000 0x8 0 MBUS_ID(0x08, 0x70) 0 1 0 /* Port 1.3 IO */
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0x82000000 0x9 0 MBUS_ID(0x04, 0xf8) 0 1 0 /* Port 2.0 MEM */
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0x81000000 0x9 0 MBUS_ID(0x04, 0xf0) 0 1 0 /* Port 2.0 IO */
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0x82000000 0xa 0 MBUS_ID(0x08, 0xf8) 0 1 0 /* Port 3.0 MEM */
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0x81000000 0xa 0 MBUS_ID(0x08, 0xf0) 0 1 0 /* Port 3.0 IO */>;
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pcie@1,0 {
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device_type = "pci";
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assigned-addresses = <0x82000800 0 0x40000 0 0x2000>;
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reg = <0x0800 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x1 0 1 0
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0x81000000 0 0 0x81000000 0x1 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 58>;
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marvell,pcie-port = <0>;
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marvell,pcie-lane = <0>;
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clocks = <&gateclk 5>;
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status = "disabled";
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};
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pcie@2,0 {
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device_type = "pci";
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assigned-addresses = <0x82001000 0 0x44000 0 0x2000>;
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reg = <0x1000 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x2 0 1 0
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0x81000000 0 0 0x81000000 0x2 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 59>;
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marvell,pcie-port = <0>;
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marvell,pcie-lane = <1>;
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clocks = <&gateclk 6>;
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status = "disabled";
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};
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pcie@3,0 {
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device_type = "pci";
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assigned-addresses = <0x82001800 0 0x48000 0 0x2000>;
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reg = <0x1800 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x3 0 1 0
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0x81000000 0 0 0x81000000 0x3 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 60>;
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marvell,pcie-port = <0>;
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marvell,pcie-lane = <2>;
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clocks = <&gateclk 7>;
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status = "disabled";
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};
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pcie@4,0 {
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device_type = "pci";
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assigned-addresses = <0x82002000 0 0x4c000 0 0x2000>;
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reg = <0x2000 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x4 0 1 0
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0x81000000 0 0 0x81000000 0x4 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 61>;
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marvell,pcie-port = <0>;
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marvell,pcie-lane = <3>;
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clocks = <&gateclk 8>;
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status = "disabled";
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};
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pcie@5,0 {
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device_type = "pci";
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assigned-addresses = <0x82002800 0 0x80000 0 0x2000>;
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reg = <0x2800 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x5 0 1 0
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0x81000000 0 0 0x81000000 0x5 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 62>;
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marvell,pcie-port = <1>;
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marvell,pcie-lane = <0>;
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clocks = <&gateclk 9>;
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status = "disabled";
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};
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pcie@6,0 {
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device_type = "pci";
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assigned-addresses = <0x82003000 0 0x84000 0 0x2000>;
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reg = <0x3000 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x6 0 1 0
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0x81000000 0 0 0x81000000 0x6 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 63>;
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marvell,pcie-port = <1>;
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marvell,pcie-lane = <1>;
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clocks = <&gateclk 10>;
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status = "disabled";
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};
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pcie@7,0 {
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device_type = "pci";
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assigned-addresses = <0x82003800 0 0x88000 0 0x2000>;
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reg = <0x3800 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x7 0 1 0
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0x81000000 0 0 0x81000000 0x7 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 64>;
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marvell,pcie-port = <1>;
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marvell,pcie-lane = <2>;
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clocks = <&gateclk 11>;
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status = "disabled";
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};
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pcie@8,0 {
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device_type = "pci";
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assigned-addresses = <0x82004000 0 0x8c000 0 0x2000>;
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reg = <0x4000 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x8 0 1 0
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0x81000000 0 0 0x81000000 0x8 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 65>;
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marvell,pcie-port = <1>;
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marvell,pcie-lane = <3>;
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clocks = <&gateclk 12>;
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status = "disabled";
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};
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pcie@9,0 {
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device_type = "pci";
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assigned-addresses = <0x82004800 0 0x42000 0 0x2000>;
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reg = <0x4800 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0x9 0 1 0
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0x81000000 0 0 0x81000000 0x9 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 99>;
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marvell,pcie-port = <2>;
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marvell,pcie-lane = <0>;
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clocks = <&gateclk 26>;
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status = "disabled";
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};
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pcie@10,0 {
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device_type = "pci";
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assigned-addresses = <0x82005000 0 0x82000 0 0x2000>;
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reg = <0x5000 0 0 0 0>;
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#address-cells = <3>;
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#size-cells = <2>;
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#interrupt-cells = <1>;
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ranges = <0x82000000 0 0 0x82000000 0xa 0 1 0
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0x81000000 0 0 0x81000000 0xa 0 1 0>;
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interrupt-map-mask = <0 0 0 0>;
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interrupt-map = <0 0 0 0 &mpic 103>;
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marvell,pcie-port = <3>;
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marvell,pcie-lane = <0>;
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clocks = <&gateclk 27>;
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status = "disabled";
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};
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};
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