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linux/arch/powerpc/boot/dts/akebono.dts
Alistair Popple e2c37d9083 powerpc: Added PCI MSI support using the HSTA module 
The PPC476GTR SoC supports message signalled interrupts (MSI) by writing
to special addresses within the High Speed Transfer Assist (HSTA) module.

This patch adds support for PCI MSI with a new system device. The DMA
window is also updated to allow access to the entire 42-bit address range
to allow PCI devices write access to the HSTA module.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2014-05-01 08:26:30 +10:00

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/*
* Device Tree Source for IBM Embedded PPC 476 Platform
*
* Copyright © 2013 Tony Breeds IBM Corporation
* Copyright © 2013 Alistair Popple IBM Corporation
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without
* any warranty of any kind, whether express or implied.
*/
/dts-v1/;
/memreserve/ 0x01f00000 0x00100000; // spin table
/ {
#address-cells = <2>;
#size-cells = <2>;
model = "ibm,akebono";
compatible = "ibm,akebono", "ibm,476gtr";
dcr-parent = <&{/cpus/cpu@0}>;
aliases {
serial0 = &UART0;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu@0 {
device_type = "cpu";
model = "PowerPC,476";
reg = <0>;
clock-frequency = <1600000000>; // 1.6 GHz
timebase-frequency = <100000000>; // 100Mhz
i-cache-line-size = <32>;
d-cache-line-size = <32>;
i-cache-size = <32768>;
d-cache-size = <32768>;
dcr-controller;
dcr-access-method = "native";
status = "ok";
};
cpu@1 {
device_type = "cpu";
model = "PowerPC,476";
reg = <1>;
clock-frequency = <1600000000>; // 1.6 GHz
timebase-frequency = <100000000>; // 100Mhz
i-cache-line-size = <32>;
d-cache-line-size = <32>;
i-cache-size = <32768>;
d-cache-size = <32768>;
dcr-controller;
dcr-access-method = "native";
status = "disabled";
enable-method = "spin-table";
cpu-release-addr = <0x0 0x01f00000>;
};
};
memory {
device_type = "memory";
reg = <0x0 0x0 0x0 0x0>; // filled in by zImage
};
MPIC: interrupt-controller {
compatible = "chrp,open-pic";
interrupt-controller;
dcr-reg = <0xffc00000 0x00040000>;
#address-cells = <0>;
#size-cells = <0>;
#interrupt-cells = <2>;
single-cpu-affinity;
};
plb {
compatible = "ibm,plb6";
#address-cells = <2>;
#size-cells = <2>;
ranges;
clock-frequency = <200000000>; // 200Mhz
HSTA0: hsta@310000e0000 {
compatible = "ibm,476gtr-hsta-msi", "ibm,hsta-msi";
reg = <0x310 0x000e0000 0x0 0xf0>;
interrupt-parent = <&MPIC>;
interrupts = <108 0
109 0
110 0
111 0
112 0
113 0
114 0
115 0
116 0
117 0
118 0
119 0
120 0
121 0
122 0
123 0>;
};
MAL0: mcmal {
compatible = "ibm,mcmal-476gtr", "ibm,mcmal2";
dcr-reg = <0xc0000000 0x062>;
num-tx-chans = <1>;
num-rx-chans = <1>;
#address-cells = <0>;
#size-cells = <0>;
interrupt-parent = <&MPIC>;
interrupts = < /*TXEOB*/ 77 0x4
/*RXEOB*/ 78 0x4
/*SERR*/ 76 0x4
/*TXDE*/ 79 0x4
/*RXDE*/ 80 0x4>;
};
SATA0: sata@30000010000 {
compatible = "ibm,476gtr-ahci";
reg = <0x300 0x00010000 0x0 0x10000>;
interrupt-parent = <&MPIC>;
interrupts = <93 2>;
};
EHCI0: ehci@30010000000 {
compatible = "ibm,476gtr-ehci", "generic-ehci";
reg = <0x300 0x10000000 0x0 0x10000>;
interrupt-parent = <&MPIC>;
interrupts = <85 2>;
};
SD0: sd@30000000000 {
compatible = "ibm,476gtr-sdhci", "generic-sdhci";
reg = <0x300 0x00000000 0x0 0x10000>;
interrupts = <91 2>;
interrupt-parent = <&MPIC>;
};
OHCI0: ohci@30010010000 {
compatible = "ibm,476gtr-ohci", "generic-ohci";
reg = <0x300 0x10010000 0x0 0x10000>;
interrupt-parent = <&MPIC>;
interrupts = <89 1>;
};
OHCI1: ohci@30010020000 {
compatible = "ibm,476gtr-ohci", "generic-ohci";
reg = <0x300 0x10020000 0x0 0x10000>;
interrupt-parent = <&MPIC>;
interrupts = <88 1>;
};
POB0: opb {
compatible = "ibm,opb-4xx", "ibm,opb";
#address-cells = <1>;
#size-cells = <1>;
/* Wish there was a nicer way of specifying a full
* 32-bit range
*/
ranges = <0x00000000 0x0000033f 0x00000000 0x80000000
0x80000000 0x0000033f 0x80000000 0x80000000>;
clock-frequency = <100000000>;
RGMII0: emac-rgmii-wol@50004 {
compatible = "ibm,rgmii-wol-476gtr", "ibm,rgmii-wol";
reg = <0x50004 0x00000008>;
has-mdio;
};
EMAC0: ethernet@30000 {
device_type = "network";
compatible = "ibm,emac-476gtr", "ibm,emac4sync";
interrupt-parent = <&EMAC0>;
interrupts = <0x0 0x1>;
#interrupt-cells = <1>;
#address-cells = <0>;
#size-cells = <0>;
interrupt-map = </*Status*/ 0x0 &MPIC 81 0x4
/*Wake*/ 0x1 &MPIC 82 0x4>;
reg = <0x30000 0x78>;
/* local-mac-address will normally be added by
* the wrapper. If your device doesn't support
* passing data to the wrapper (in the form
* local-mac-addr=<hwaddr>) then you will need
* to set it manually here. */
//local-mac-address = [000000000000];
mal-device = <&MAL0>;
mal-tx-channel = <0>;
mal-rx-channel = <0>;
cell-index = <0>;
max-frame-size = <9000>;
rx-fifo-size = <4096>;
tx-fifo-size = <2048>;
rx-fifo-size-gige = <16384>;
phy-mode = "rgmii";
phy-map = <0x00000000>;
rgmii-wol-device = <&RGMII0>;
has-inverted-stacr-oc;
has-new-stacr-staopc;
};
UART0: serial@10000 {
device_type = "serial";
compatible = "ns16750", "ns16550";
reg = <0x10000 0x00000008>;
virtual-reg = <0xe8010000>;
clock-frequency = <1851851>;
current-speed = <38400>;
interrupt-parent = <&MPIC>;
interrupts = <39 2>;
};
IIC0: i2c@00000000 {
compatible = "ibm,iic-476gtr", "ibm,iic";
reg = <0x0 0x00000020>;
interrupt-parent = <&MPIC>;
interrupts = <37 2>;
#address-cells = <1>;
#size-cells = <0>;
rtc@68 {
compatible = "stm,m41t80", "m41st85";
reg = <0x68>;
};
};
IIC1: i2c@00000100 {
compatible = "ibm,iic-476gtr", "ibm,iic";
reg = <0x100 0x00000020>;
interrupt-parent = <&MPIC>;
interrupts = <38 2>;
#address-cells = <1>;
#size-cells = <0>;
avr@58 {
compatible = "ibm,akebono-avr";
reg = <0x58>;
};
};
FPGA0: fpga@ebc00000 {
compatible = "ibm,akebono-fpga";
reg = <0xebc00000 0x8>;
};
};
PCIE0: pciex@10100000000 {
device_type = "pci";
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
primary;
port = <0x0>; /* port number */
reg = <0x00000101 0x00000000 0x0 0x10000000 /* Config space access */
0x00000100 0x00000000 0x0 0x00001000>; /* UTL Registers space access */
dcr-reg = <0xc0 0x20>;
// pci_space < pci_addr > < cpu_addr > < size >
ranges = <0x02000000 0x00000000 0x80000000 0x00000110 0x80000000 0x0 0x80000000
0x01000000 0x0 0x0 0x00000140 0x0 0x0 0x00010000>;
/* Inbound starting at 0x0 to 0x40000000000. In order to use MSI
* PCI devices must be able to write to the HSTA module.
*/
dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x400 0x0>;
/* This drives busses 0 to 0xf */
bus-range = <0x0 0xf>;
/* Legacy interrupts (note the weird polarity, the bridge seems
* to invert PCIe legacy interrupts).
* We are de-swizzling here because the numbers are actually for
* port of the root complex virtual P2P bridge. But I want
* to avoid putting a node for it in the tree, so the numbers
* below are basically de-swizzled numbers.
* The real slot is on idsel 0, so the swizzling is 1:1
*/
interrupt-map-mask = <0x0 0x0 0x0 0x7>;
interrupt-map = <
0x0 0x0 0x0 0x1 &MPIC 45 0x2 /* int A */
0x0 0x0 0x0 0x2 &MPIC 46 0x2 /* int B */
0x0 0x0 0x0 0x3 &MPIC 47 0x2 /* int C */
0x0 0x0 0x0 0x4 &MPIC 48 0x2 /* int D */>;
};
PCIE1: pciex@20100000000 {
device_type = "pci";
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
primary;
port = <0x1>; /* port number */
reg = <0x00000201 0x00000000 0x0 0x10000000 /* Config space access */
0x00000200 0x00000000 0x0 0x00001000>; /* UTL Registers space access */
dcr-reg = <0x100 0x20>;
// pci_space < pci_addr > < cpu_addr > < size >
ranges = <0x02000000 0x00000000 0x80000000 0x00000210 0x80000000 0x0 0x80000000
0x01000000 0x0 0x0 0x00000240 0x0 0x0 0x00010000>;
/* Inbound starting at 0x0 to 0x40000000000. In order to use MSI
* PCI devices must be able to write to the HSTA module.
*/
dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x400 0x0>;
/* This drives busses 0 to 0xf */
bus-range = <0x0 0xf>;
/* Legacy interrupts (note the weird polarity, the bridge seems
* to invert PCIe legacy interrupts).
* We are de-swizzling here because the numbers are actually for
* port of the root complex virtual P2P bridge. But I want
* to avoid putting a node for it in the tree, so the numbers
* below are basically de-swizzled numbers.
* The real slot is on idsel 0, so the swizzling is 1:1
*/
interrupt-map-mask = <0x0 0x0 0x0 0x7>;
interrupt-map = <
0x0 0x0 0x0 0x1 &MPIC 53 0x2 /* int A */
0x0 0x0 0x0 0x2 &MPIC 54 0x2 /* int B */
0x0 0x0 0x0 0x3 &MPIC 55 0x2 /* int C */
0x0 0x0 0x0 0x4 &MPIC 56 0x2 /* int D */>;
};
PCIE2: pciex@18100000000 {
device_type = "pci";
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
primary;
port = <0x2>; /* port number */
reg = <0x00000181 0x00000000 0x0 0x10000000 /* Config space access */
0x00000180 0x00000000 0x0 0x00001000>; /* UTL Registers space access */
dcr-reg = <0xe0 0x20>;
// pci_space < pci_addr > < cpu_addr > < size >
ranges = <0x02000000 0x00000000 0x80000000 0x00000190 0x80000000 0x0 0x80000000
0x01000000 0x0 0x0 0x000001c0 0x0 0x0 0x00010000>;
/* Inbound starting at 0x0 to 0x40000000000. In order to use MSI
* PCI devices must be able to write to the HSTA module.
*/
dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x400 0x0>;
/* This drives busses 0 to 0xf */
bus-range = <0x0 0xf>;
/* Legacy interrupts (note the weird polarity, the bridge seems
* to invert PCIe legacy interrupts).
* We are de-swizzling here because the numbers are actually for
* port of the root complex virtual P2P bridge. But I want
* to avoid putting a node for it in the tree, so the numbers
* below are basically de-swizzled numbers.
* The real slot is on idsel 0, so the swizzling is 1:1
*/
interrupt-map-mask = <0x0 0x0 0x0 0x7>;
interrupt-map = <
0x0 0x0 0x0 0x1 &MPIC 61 0x2 /* int A */
0x0 0x0 0x0 0x2 &MPIC 62 0x2 /* int B */
0x0 0x0 0x0 0x3 &MPIC 63 0x2 /* int C */
0x0 0x0 0x0 0x4 &MPIC 64 0x2 /* int D */>;
};
PCIE3: pciex@28100000000 {
device_type = "pci";
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
compatible = "ibm,plb-pciex-476fpe", "ibm,plb-pciex";
primary;
port = <0x3>; /* port number */
reg = <0x00000281 0x00000000 0x0 0x10000000 /* Config space access */
0x00000280 0x00000000 0x0 0x00001000>; /* UTL Registers space access */
dcr-reg = <0x120 0x20>;
// pci_space < pci_addr > < cpu_addr > < size >
ranges = <0x02000000 0x00000000 0x80000000 0x00000290 0x80000000 0x0 0x80000000
0x01000000 0x0 0x0 0x000002c0 0x0 0x0 0x00010000>;
/* Inbound starting at 0x0 to 0x40000000000. In order to use MSI
* PCI devices must be able to write to the HSTA module.
*/
dma-ranges = <0x42000000 0x0 0x0 0x0 0x0 0x400 0x0>;
/* This drives busses 0 to 0xf */
bus-range = <0x0 0xf>;
/* Legacy interrupts (note the weird polarity, the bridge seems
* to invert PCIe legacy interrupts).
* We are de-swizzling here because the numbers are actually for
* port of the root complex virtual P2P bridge. But I want
* to avoid putting a node for it in the tree, so the numbers
* below are basically de-swizzled numbers.
* The real slot is on idsel 0, so the swizzling is 1:1
*/
interrupt-map-mask = <0x0 0x0 0x0 0x7>;
interrupt-map = <
0x0 0x0 0x0 0x1 &MPIC 69 0x2 /* int A */
0x0 0x0 0x0 0x2 &MPIC 70 0x2 /* int B */
0x0 0x0 0x0 0x3 &MPIC 71 0x2 /* int C */
0x0 0x0 0x0 0x4 &MPIC 72 0x2 /* int D */>;
};
};
chosen {
linux,stdout-path = &UART0;
};
};
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