Re: [Xen-devel] Re: Video Presentation on PCI Express x16 VGA Pass Through to Xen-based Windows XP Home Edition HVM Virtual Machine

["Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>]

Hi All,

Weidong's graphic card is:

01:00.0 VGA 
compatible controller: nVidia Corporation Unknown device 05ff (rev a1) (prog-if 
00 [VGA controller])
        Subsystem: 
nVidia Corporation Unknown device 
0661
        Flags: bus master, fast 
devsel, latency 0, IRQ 16
        Memory 
at c2000000 (32-bit, non-prefetchable) 
[size=16M]
        Memory at e0000000 
(64-bit, prefetchable) [size=256M]
        
Memory at c0000000 (64-bit, non-prefetchable) 
[size=32M]
        I/O ports at 9c00 
[size=128]
        Expansion ROM at 
bff00000 [disabled] [size=512K]
        
Capabilities: [60] Power Management version 
3
        Capabilities: [68] Message 
Signalled Interrupts: 64bit+ Queue=0/0 
Enable+
        Capabilities: [78] Express 
Endpoint IRQ 0

So his xen-vBAR-pBAR.patch is:

<CODE>

diff -r 96b634bf65c3 tools/firmware/hvmloader/acpi/dsdt.asl
--- a/tools/firmware/hvmloader/acpi/dsdt.asl    Mon Aug 31 13:14:47 2009 +0800
+++ b/tools/firmware/hvmloader/acpi/dsdt.asl    Mon Aug 31 16:03:27 2009 +0800
@@ -175,6 +175,34 @@ DefinitionBlock ("DSDT.aml", "DSDT", 2, 
                         0x000BFFFF,
                         0x00000000,
                         0x00020000)
+
+                    /* reserve MMIO BARs of gfx for 1:1 mapping */
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        Cacheable, ReadWrite,
+                        0x00000000,
+                        0xE0000000,
+                        0xEFFFFFFF,
+                        0x00000000,
+                        0x10000000)
+
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        NonCacheable, ReadWrite,
+                        0x00000000,
+                        0xC0000000,
+                        0xC1FFFFFF,
+                        0x00000000,
+                        0x02000000)
+
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        NonCacheable, ReadWrite,
+                        0x00000000,
+                        0xC2000000,
+                        0xC2FFFFFF,
+                        0x00000000,
+                        0x01000000)
+                        0x01000000)
 
                     DWordMemory(
                         ResourceProducer, PosDecode, MinFixed, MaxFixed,

</CODE>

My own nvidia pci express x16 geforce 8400 GS graphics card is:

01:00.0 VGA compatible controller: nVidia Corporation GeForce 8400 GS (rev a1) (prog-if 00 [VGA controller])
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at d2000000 (32-bit, non-prefetchable) [size=16M]
    Memory at c0000000 (64-bit, prefetchable) [size=256M]
    Memory at d0000000 (64-bit, non-prefetchable) [size=32M]
    I/O ports at d000 [size=128]
    [virtual] Expansion ROM at d3000000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: nvidia
    Kernel modules: nvidia



So should I modify Weidong's xen-vBAR-pBAR.patch like the following code section to reflect my own graphics card?

<CODE>

diff -r 96b634bf65c3 tools/firmware/hvmloader/acpi/dsdt.asl
--- a/tools/firmware/hvmloader/acpi/dsdt.asl    Mon Aug 31 13:14:47 2009 +0800
+++ b/tools/firmware/hvmloader/acpi/dsdt.asl    Mon Aug 31 16:03:27 2009 +0800
@@ -175,6 +175,34 @@ DefinitionBlock ("DSDT.aml", "DSDT", 2, 
                         0x000BFFFF,
                         0x00000000,
                         0x00020000)
+
+                    /* reserve MMIO BARs of gfx for 1:1 mapping */
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        Cacheable, ReadWrite,
+                        0x00000000,
+                        0xC0000000,
+                        0xCFFFFFFF,
+                        0x00000000,
+                        0x10000000)
+
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        NonCacheable, ReadWrite,
+                        0x00000000,
+                        0xD0000000,
+                        0xD1FFFFFF,
+                        0x00000000,
+                        0x02000000)
+
+                    DWordMemory(
+                        ResourceProducer, PosDecode, MinFixed, MaxFixed,
+                        NonCacheable, ReadWrite,
+                        0x00000000,
+                        0xD2000000,
+                        0xD2FFFFFF,
+                        0x00000000,
+                        0x01000000)
+                        0x01000000)
 
                     DWordMemory(
                         ResourceProducer, PosDecode, MinFixed, MaxFixed,

</CODE>

I am doing a direct substitution using pattern recognition. Please advise and correct me on my modifications above because I am not acquainted with the memory regions of graphics card.

-- 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
Blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
Email: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone: +65-9648-9798
Street: Bedok Reservoir Road
Republic of Singapore
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel