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[Qemu-devel] ARM Realview can not support PCI

From: PianoPan
Subject: [Qemu-devel] ARM Realview can not support PCI
Date: Wed, 16 Apr 2008 17:50:55 +0800

HI, everyone,

I try to use the PCI on ARM Realview (Qemu). But the PCI could not
work, and the boot message contain the "Cannot find PCI core!".

The  kernel that I used is 2.6.24 from kernel.org. The patch is from
the ARM Website.

And I found a strange thing. In pci driver of arm linux kernel, the
address of PCI controller is

#define REALVIEW_EB_PCI_VIRT_BASE   0xe8000000
#define REALVIEW_EB_PCI_CFG_VIRT_BASE   0xe9000000
#define REALVIEW_EB_PCI_IO_VIRT_BASE    0xea000000

but in qemu,
   /* 0x60000000 PCI.  */
    /* 0x61000000 PCI Self Config.  */
    /* 0x62000000 PCI Config.  */
    /* 0x63000000 PCI IO.  */
    /* 0x64000000 PCI mem 0.  */
    /* 0x68000000 PCI mem 1.  */
    /* 0x6c000000 PCI mem 2.  */

I am puzzled about them, (example: IO address in qemu is 0x63000000,
but in driver, it is 0x6a000000). If somebody give me some comments to
resolve this issue?



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