[OpenBIOS] Faulty Qemu SPARC64 IDE emulation?

[Blue Swirl]

On Tue, Dec 22, 2009 at 7:20 PM, Tarl Neustaedter
<Tarl.Neustaedter at sun.com> wrote:
> Tarl Neustaedter wrote:
>>
>> [...]
>>>
>>> Right, I think I understand now. So the obvious question to ask now is
>>> how is PCI configuration space mapped on Sparc64? I can see that on x86 it's
>>> mapped to an I/O port at 0xCF8 but I can't seem to find how this is
>>> implemented on Sparc64. Anyone have any idea?
>>
>> PCI spaces are each mapped in separately in physical spaces on SPARC.
>> [...]
>
> On a sun4u system (Tazmo, SUNW,Ultra-4), the first PCI root complex is a
> Psycho (Sun's first PCI bus chip) and has spaces at:

QEMU is emulating a Sabre/Simba based system.

>
> Config: 000001fe.01000000, length 00800000.
> IO: 000001fe.02010000 length 00010000.
> mem32: 000001ff.80000000 length 80000000.
> mem64: 000001ff.80000000 length 80000000

There the values are (from the US-IIi manual)
Config: 000001fe.01000000, length 00800000?
IO: 000001fe.02000000 length 00100000
mem32: 000001ff.00000000 length f0000000 (4G - PROM)
mem64: 000001ff.80000000 length f0000000 (I think)

> This can be derived from the "Ranges" property in the PCI node, attached
> below. Note that Psycho did not implement mem64 separately, so the mem64
> space simply points to mem32 space. And it only has 31 bits of
> addressability - I recall the other half of the mem32 space is used for DMA,
> so thus not mappable as registers.
>
> The config space is addressed precisely as defined by the PCI bindings
> "phys.hi" definition. That means it's composed of:
>
> phys.hi: xxxxxxxx bbbbbbbb dddddfff rrrrrrrr
>
> Where xxxx is not part of the addressing in above address space, bbbbbbbb is
> eight bits of bus number, ddddd is five bits of device number, fff is three
> bits of function number and rrrrrrrr is eight bits of register offset
> addressing (sorry I got it wrong on an earlier email, I was thinking of some
> pci-e stuff).

Same as  Sabre.

> - - - - -
> PCI node as shown by Solaris "prtconf -pv":
>
>   Node 0xf006ebb8
>       slot-names:
>  0000001e.4d6f7468.6572626f.61726400.4d6f7468.6572626f.61726
> 400.4d6f7468.6572626f.61726400.50434920.736c6f74.20313000
>       available:
>  82000000.00000000.00017000.00000000.7ffe9000.81000000.000000
> 00.00000900.00000000.0000f700
>       bus-range:  00000000.00000000
>       version#:  00000004
>       implementation#:  00000000
>       address:  fffb4000.fffb2000.fffa4000
>       #upa-interrupt-proxies:  00000002
>       clock-frequency:  01f78a40
>       upa-portid:  0000001f
>       interrupts:  000007f1.000007ee.000007ef.000007e5.000007e8.000007f2
>       ranges:
>  00000000.00000000.00000000.000001fe.01000000.00000000.00800000.
> 01000000.00000000.00000000.000001fe.02010000.00000000.00010000.02000000.00000000
> .00000000.000001ff.80000000.00000000.80000000.03000000.00000000.00000000.000001f
> f.80000000.00000000.80000000
>       reg:
>  000001fe.00004000.00000000.00002000.000001fe.01000000.00000000.000
> 00100.000001fe.00000000.00000000.0000d000
>       no-probe-list:  '0'
>       latency-timer:  00000040
>       model:  'SUNW,psycho'
>       compatible: 'pci108e,8000' + 'pciclass,060000'
>       thermal-interrupt:       bus-parity-generated:       #size-cells:
>  00000002
>       #address-cells:  00000003
>       device_type:  'pci'
>       name:  'pci'

This one is from "SUNW,Ultra-5_10":

    Node 0xf005f1e0
        bus-range:  00000000.00000002
        available:  82000000.00000000.00001000.00000000.fffff000.81000000.000000
00.00000400.00000000.00fffc00.00006176.61696c61
        virtual-dma:  c0000000.20000000
        #virtual-dma-size-cells:  00000001
        #virtual-dma-addr-cells:  00000001
        latency-timer:
        address:  fffc4000.fffc2000
        button-interrupt:
        no-streaming-cache:
        clock-frequency:  03ef1480
        upa-portid:  0000001f
        66mhz-capable:
        interrupts:  000007f0.000007ee.000007ef.000007e5
        ranges:  00000000.00000000.00000000.000001fe.01000000.00000000.01000000.
01000000.00000000.00000000.000001fe.02000000.00000000.01000000.02000000.00000000
.00000000.000001ff.00000000.00000001.00000000.03000000.00000000.00000000.000001f
f.00000000.00000001.00000000
        reg:  000001fe.00000000.00000000.00010000.000001fe.01000000.00000000.000
00100
        model:  'SUNW,sabre'
        compatible:  70636931.3038652c.61303030.00706369
        bus-parity-generated:
        #size-cells:  '00000002'
        #address-cells:  '00000003'
        device_type:  'pci'
        name:  'pci'

        Node 0xf005f9d4
            bus-range:  00000001.00000001
            scsi-initiator-id:  00000007
            compatible:  70636931.3038652c.35303030.00706369
            66mhz-capable:
            fast-back-to-back:
            devsel-speed:  00000001
            class-code:  00060400
            revision-id:  00000011
            device-id:  00005000
            vendor-id:  0000108e
            interrupt-map:  00010800.00000000.00000000.00000001.f005f1e0.0000002
1.00011000.00000000.00000000.00000001.f005f1e0.0000000f.00011800.00000000.000000
00.00000001.f005f1e0.00000020
            interrupt-map-mask:  00fff800.00000000.00000000.00000007
            #interrupt-cells:  00000001
            slot-names:  00000000
            no-probe-list:  '0'
            clock-frequency:  01f78a40
            model:  'SUNW,simba'
            #address-cells:  00000003
            #size-cells:  00000002
            reg:  00000900.00000000.00000000.00000000.00000000
            device_type:  'pci'
            name:  'pci'