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Vinod E | 1 Jan 2008 13:21
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adding a new PCI device support in QEMU

Hi,
   I have a special kind of PCI device on my system. 
I want QEMU to emulate that device and have Guest VM
see that.  Can someone point me to any documentation
available on how I/O device handling is done in QEMU?

Thanks,
Vinod

      ____________________________________________________________________________________
Never miss a thing.  Make Yahoo your home page. 
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Paul Brook | 1 Jan 2008 16:51
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Re: adding a new PCI device support in QEMU

On Tuesday 01 January 2008, Vinod E wrote:
> Hi,
>    I have a special kind of PCI device on my system.
> I want QEMU to emulate that device and have Guest VM
> see that.  Can someone point me to any documentation
> available on how I/O device handling is done in QEMU?

Read the source. There are plenty of examples of PCI devices (e.g. USB host 
adapters, LSI scsi adapter and various network cards).

Paul
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Blue Swirl | 1 Jan 2008 18:04
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qemu/hw iommu.c sun4m.c sun4m.h

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Changes by:	Blue Swirl <blueswir1>	08/01/01 17:04:45

Modified files:
	hw             : iommu.c sun4m.c sun4m.h 

Log message:
	 DVMA translation errors raise a module error irq (NMI)

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/iommu.c?cvsroot=qemu&r1=1.23&r2=1.24
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sun4m.c?cvsroot=qemu&r1=1.77&r2=1.78
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sun4m.h?cvsroot=qemu&r1=1.7&r2=1.8
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Blue Swirl | 1 Jan 2008 18:06
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qemu/hw eccmemctl.c esp.c fdc.c iommu.c pcnet.c...

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Changes by:	Blue Swirl <blueswir1>	08/01/01 17:06:39

Modified files:
	hw             : eccmemctl.c esp.c fdc.c iommu.c pcnet.c sbi.c 
	                 slavio_intctl.c slavio_misc.c slavio_serial.c 
	                 slavio_timer.c sparc32_dma.c sun4c_intctl.c 
	                 tcx.c 

Log message:
	 Register only valid register access widths

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/eccmemctl.c?cvsroot=qemu&r1=1.1&r2=1.2
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/esp.c?cvsroot=qemu&r1=1.32&r2=1.33
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/fdc.c?cvsroot=qemu&r1=1.36&r2=1.37
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/iommu.c?cvsroot=qemu&r1=1.24&r2=1.25
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/pcnet.c?cvsroot=qemu&r1=1.22&r2=1.23
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sbi.c?cvsroot=qemu&r1=1.1&r2=1.2
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_intctl.c?cvsroot=qemu&r1=1.27&r2=1.28
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_misc.c?cvsroot=qemu&r1=1.16&r2=1.17
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_serial.c?cvsroot=qemu&r1=1.31&r2=1.32
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_timer.c?cvsroot=qemu&r1=1.27&r2=1.28
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sparc32_dma.c?cvsroot=qemu&r1=1.10&r2=1.11
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sun4c_intctl.c?cvsroot=qemu&r1=1.1&r2=1.2
http://cvs.savannah.gnu.org/viewcvs/qemu/hw/tcx.c?cvsroot=qemu&r1=1.25&r2=1.26
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Blue Swirl | 1 Jan 2008 17:57
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qemu cpu-all.h exec.c

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Changes by:	Blue Swirl <blueswir1>	08/01/01 16:57:19

Modified files:
	.              : cpu-all.h exec.c 

Log message:
	 Support for registering address space only for some access widths

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/cpu-all.h?cvsroot=qemu&r1=1.80&r2=1.81
http://cvs.savannah.gnu.org/viewcvs/qemu/exec.c?cvsroot=qemu&r1=1.120&r2=1.121
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Blue Swirl | 1 Jan 2008 18:07
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qemu/target-sparc op_helper.c

CVSROOT:	/cvsroot/qemu
Module name:	qemu
Changes by:	Blue Swirl <blueswir1>	08/01/01 17:07:40

Modified files:
	target-sparc   : op_helper.c 

Log message:
	 More ASIs

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/qemu/target-sparc/op_helper.c?cvsroot=qemu&r1=1.64&r2=1.65
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Dan Kenigsberg | 1 Jan 2008 19:35

[PATCH] (resend) Allow setting the vendor and model_id strings with x86's -cpu option

Would you consider the following patch, that allows users to set two
important x86 cpu options from the command line? (the vendor and
model_id strings)

Regards,
    Dan.

commit 04433bad959a7a4c1b8a0c22bd50eab9bf181b32
Author: Dan Kenigsberg <danken <at> qumranet.com>
Date:   Thu Dec 20 15:43:15 2007 +0200

    Change vendor string and model id from the -cpu command line option

diff --git a/target-i386/helper2.c b/target-i386/helper2.c
index 551a0d8..b59bf92 100644
--- a/target-i386/helper2.c
+++ b/target-i386/helper2.c
 <at>  <at>  -121,6 +121,7  <at>  <at>  typedef struct x86_def_t {
     const char *name;
     uint32_t level;
     uint32_t vendor1, vendor2, vendor3;
+    char model_id[48];
     int family;
     int model;
     int stepping;
 <at>  <at>  -262,7 +263,21  <at>  <at>  static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
                     goto error;
                 }
                 x86_cpu_def->stepping = stepping;
-            } else {
(Continue reading)

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Aurelien Jarno | 1 Jan 2008 20:25

Re: qemu/hw slavio_intctl.c slavio_timer.c sun4m.c

On Sat, Dec 29, 2007 at 08:09:57PM +0000, Blue Swirl wrote:
> CVSROOT:	/cvsroot/qemu
> Module name:	qemu
> Changes by:	Blue Swirl <blueswir1>	07/12/29 20:09:57
> 
> Modified files:
> 	hw             : slavio_intctl.c slavio_timer.c sun4m.c 
> 
> Log message:
> 	 Fix CPU timer interrupts
> 
> CVSWeb URLs:
> http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_intctl.c?cvsroot=qemu&r1=1.26&r2=1.27
> http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_timer.c?cvsroot=qemu&r1=1.26&r2=1.27
> http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sun4m.c?cvsroot=qemu&r1=1.76&r2=1.77
> 

Unfortunately this commit has broken SS-5 running Linux:

[sparc] Booting file 'disk' with parameters ''
Not a bootable ELF image
Not a Linux kernel image
Loading a.out image...
Loaded 7680 bytes
entry point is 0x4000
Jumping to entry point...
SILO Version 1.4.13
boot:
Uncompressing image...
Loaded kernel version 2.6.18
(Continue reading)

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Blue Swirl | 1 Jan 2008 21:00
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Re: qemu/hw slavio_intctl.c slavio_timer.c sun4m.c

On 1/1/08, Aurelien Jarno <aurelien <at> aurel32.net> wrote:
> On Sat, Dec 29, 2007 at 08:09:57PM +0000, Blue Swirl wrote:
> > CVSROOT:      /cvsroot/qemu
> > Module name:  qemu
> > Changes by:   Blue Swirl <blueswir1>  07/12/29 20:09:57
> >
> > Modified files:
> >       hw             : slavio_intctl.c slavio_timer.c sun4m.c
> >
> > Log message:
> >        Fix CPU timer interrupts
> >
> > CVSWeb URLs:
> > http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_intctl.c?cvsroot=qemu&r1=1.26&r2=1.27
> > http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_timer.c?cvsroot=qemu&r1=1.26&r2=1.27
> > http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sun4m.c?cvsroot=qemu&r1=1.76&r2=1.77
> >
>
> Unfortunately this commit has broken SS-5 running Linux:

Thanks for the report, I can reproduce the bug. What a strange error!

The following patch hides the problem, but it also un-fixes the CPU
timer. I have to think of a better solution.

diff -u -r1.28 slavio_intctl.c
--- hw/slavio_intctl.c  1 Jan 2008 17:06:38 -0000       1.28
+++ hw/slavio_intctl.c  1 Jan 2008 19:52:22 -0000
 <at>  <at>  -257,7 +257,7  <at>  <at> 
                 if (pending & (1 << j))
(Continue reading)

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Andreas Färber | 1 Jan 2008 21:25
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Re: qemu/hw slavio_intctl.c slavio_timer.c sun4m.c


Am 01.01.2008 um 20:25 schrieb Aurelien Jarno:

> On Sat, Dec 29, 2007 at 08:09:57PM +0000, Blue Swirl wrote:
>> CVSROOT:	/cvsroot/qemu
>> Module name:	qemu
>> Changes by:	Blue Swirl <blueswir1>	07/12/29 20:09:57
>>
>> Modified files:
>> 	hw             : slavio_intctl.c slavio_timer.c sun4m.c
>>
>> Log message:
>> 	 Fix CPU timer interrupts
>>
>> CVSWeb URLs:
>> http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_intctl.c?cvsroot=qemu&r1=1.26&r2=1.27
>> http://cvs.savannah.gnu.org/viewcvs/qemu/hw/slavio_timer.c?cvsroot=qemu&r1=1.26&r2=1.27
>> http://cvs.savannah.gnu.org/viewcvs/qemu/hw/sun4m.c?cvsroot=qemu&r1=1.76&r2=1.77
>>
>
> Unfortunately this commit has broken SS-5 running Linux:
>
>
> [sparc] Booting file 'disk' with parameters ''
> Not a bootable ELF image
> Not a Linux kernel image
> Loading a.out image...
> Loaded 7680 bytes
> entry point is 0x4000
> Jumping to entry point...
(Continue reading)

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