Hi,
i'm porting the linux 2.6.27 kernel to the custom board with PowerPC 7448 &
Marvell 64560. In DTS file the PCI ranges are configured as follows:
system-control...@fbe00000 { /* Marvell Discovery mv64560 (Discovery
V)*/
#address-cells = <1>;
#size-cells = <1>;
model = "mv64560"; /* Default */
compatible = "marvell,mv64360", "marvell,mv64560";
clock-frequency = <133333333>;
reg = <0xfbe00000 0x100000>;
virtual-reg = <0xfbe00000>;
ranges =
<0xd8000000 0xd8000000 0x00010000
/* PCI 0 I/O Space */
0x80000000 0x80000000 0x68000000
/* PCI 0 MEM Space */
0xd8080000 0xd8080000 0x00010000
/* PCI 1 I/O Space */
0x60000000 0x60000000 0x20000000
/* PCI 1 MEM Space */
0x00000000 0xfbe00000 0x00100000>;
/* Bridge's regs */
.....
PCI0: p...@30000 {
#address-cells = <3>;
#size-cells = <2>;
#interrupt-cells = <1>;
device_type = "pci";
compatible = "marvell,mv64360-pci";
reg = <0x30c78 12>;
ranges =
<0x01000000 0x0 0x00000000 0xd8000000 0x0
0x00010000
0x02000000 0x0 0x80000000 0x80000000 0x0
0x40000000>;
bus-range = <0 255>;
clock-frequency = <33000000>;
interrupt-pci-iack = <0x30c34>;
interrupt-parent = <&PIC>;
interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
interrupt-map = <
/* IDSEL 0x07 */
0x3800 0 0 1 &PIC 74
0x3800 0 0 2 &PIC 74
0x3800 0 0 3 &PIC 74
0x3800 0 0 4 &PIC 74
/* IDSEL 0x09 */
0x4800 0 0 1 &PIC 68
0x4800 0 0 2 &PIC 68
0x4800 0 0 3 &PIC 68
0x4800 0 0 4 &PIC 68
/* IDSEL 0x0A */
0x5000 0 0 1 &PIC 69
0x5000 0 0 2 &PIC 69
0x5000 0 0 3 &PIC 69
0x5000 0 0 4 &PIC 69
>;
};
when the kernel is booting, at the beginning the ranges are detected
correctly:
PCI host bridge /system-control...@fbe00000/p...@30000 (primary) ranges:
IO 0x00000000d8000000..0x00000000d800ffff -> 0x0000000000000000
MEM 0x0000000080000000..0x00000000bfffffff -> 0x0000000080000000
nevertheless later the range for IO space is changed as follow:
PCI: Probing PCI hardware
....
PCI: PHB (bus 0) bridge rsrc 0: 0000000000011000-0000000000020fff [0x100],
PCI: PHB (bus 0) bridge rsrc 1: 0000000080000000-00000000bfffffff [0x200],
normally the IO space should be from 0x00000000-0x0000ffff. Can someone
explain to me where the offset 0x11000 comes from.
Best regards
Eduard Fuchs
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