[vbox-dev] PDM virtual PCI device bar size

José Massada jose.massada at gmail.com
Wed Apr 24 06:47:22 PDT 2013


I managed to get it to call my callbacks.
Calling PDMDevHlpMMIORegister with the phys address and the full size does
not work. By calling PDMDevHlpMMIORegister with smaller sizes (and the
correct phys address) it works.

Calling PDMDevHlpMMIORegister with phys addr 0x40000000 and size 0x20000000
fails.
Calling PDMDevHlpMMIORegister 4 times with phys addr
0x40000000, 0x48000000, 0x50000000 and 0x58000000, and size 0x8000000 works.

Jose


On Wed, Apr 24, 2013 at 10:30 AM, José Massada <jose.massada at gmail.com>wrote:

> Not sure if relevant but I got the following errors on the log (the
> machine still loads) when using the ICH9 chipset:
>
> 00:00:11.500658 VMSetError:
> /home/vbox/vbox-4.2.10/src/VBox/VMM/VMMR3/PGMPhys.cpp(4502) int
> pgmPhysFreePage(VM*, GMMFREEPAGESREQ*, uint32_t*, PGMPAGE*, RTGCPHYS);
> rc=VERR_PGM_PHYS_NOT_RAM
> 00:00:11.500676 VMSetError: GCPhys=0000000020001000 type=6
> 00:00:11.500723 AssertLogRel
> /home/vbox/vbox-4.2.10/src/VBox/VMM/VMMR3/PGMPhys.cpp(911) int
> pgmR3PhysFreePageRange(VM*, PGMRAMRANGE*, RTGCPHYS, RTGCPHYS, uint8_t):
> RT_SUCCESS_NP(rc)
> 00:00:11.501156 VERR_PGM_PHYS_NOT_RAM (-1639) - Trying to free a page that
> isn't RAM.
> 00:00:11.581464 AssertLogRel
> /home/vbox/vbox-4.2.10/src/VBox/VMM/VMMR3/PGMPhys.cpp(2248) int
> PGMR3PhysMMIORegister(VM*, RTGCPHYS, RTGCPHYS, int (*)(VM*, RTGCPHYS,
> void*, void*, size_t, PGMACCESSTYPE, void*), void*, RTHCUINTPTR, RTR0PTR,
> RTRCPTR, RTRCPTR, const char*): RT_SUCCESS_NP(rc)
> 00:00:11.581495 cbRamRange=2097280
>
>
> And when using PIIX3, I only get this next one:
>
> 00:00:11.926143 AssertLogRel
> /home/vbox/vbox-4.2.10/src/VBox/VMM/VMMR3/PGMPhys.cpp(2248) int
> PGMR3PhysMMIORegister(VM*, RTGCPHYS, RTGCPHYS, int (*)(VM*, RTGCPHYS,
> void*, void*, size_t, PGMACCESSTYPE, void*), void*, RTHCUINTPTR, RTR0PTR,
> RTRCPTR, RTRCPTR, const char*): RT_SUCCESS_NP(rc)
> 00:00:11.926178 cbRamRange=2097280
>
> Jose
>
>
> On Wed, Apr 24, 2013 at 8:18 AM, José Massada <jose.massada at gmail.com>wrote:
>
>> I tried both but lately I've been testing with ICH9. Same behaviour.
>>
>> Jose
>>
>> On 24/04/2013, at 08:08, Nikolay Igotti <igotti at gmail.com> wrote:
>>
>>  Which chipset you are using? ICH9 generally shall be better suited for
>> your needs, due to recent
>> PCI features support.
>>
>>   Nikolay
>>
>> 23.04.2013 18:25, José Massada пишет:
>>
>> Hi all,
>>
>>  I'm working on a PDM virtual PCI device module and I need to have a bar
>> size of 512MB.
>> This particular PCI device uses bar 0 and 1 for register blocks (64KB
>> each) and bar 2 for memory (this one I need to be 512MB or even bigger).
>>
>>  Registering the memory bar using the MMIO2 functions fails when the
>> size is bigger than 256MB (hard coded limit in the allocation function) so
>> I tried registering using MMIO. It seems to work but my read and write
>> callbacks never get called (bar 0 and 1 also use MMIO and their callbacks
>> always get called). I tried decreasing the bar 2 size and the callbacks got
>> called.
>>
>>  Is this even possible without modifying VBox source code? What am I
>> missing?
>>
>>  Thanks,
>> Jose
>>
>>
>> _______________________________________________
>> vbox-dev mailing listvbox-dev at virtualbox.orghttps://www.virtualbox.org/mailman/listinfo/vbox-dev
>>
>>
>>
>
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