Vga on sandpoint

Vga on sandpoint

[maurie]

Linuxppc developers,

	I am attempting to get pci vga working on the sandpoint platform
using dink32 to start linux.  I have tried several S3 cards with no video
success.  The kernel has vga driver support for SIS and ATI support, but
these are classified as experimental and will not compile, undefined
externals for __floatsidf, __divdf3, __adddf3, __fixunsdfsi, __muldf3, and
__vmalloc.
	I have written dummy routies for these functions, compiled it
successfully,  and I can get linux to recognize it has an SIS 300 card, the
one I'm using, but it still does not work and in fact crashes if I use
XFree86, via startx.   My vmalloc code attempts to allocate space from an
array I have declared in the code space.  I have also attempted to allocate
code from video space at 0xb0000000, but this also crashes.
	Can anyone tell me what these functions do, and/or where I can get
the code for them?
	Has anyone succesfully used vga on a sandpoint, and if so, can I get
the code and and the model of the pci video card used?
	I'm also getting a timeout on the AT keyboard, however, it works
fine under dink32.
	I am using 2.4.21-rc1 kernel.
	these are  the messages I get.  The vmalloc and ivideo messages are
mine.

Oct  2 12:59:56 SPlinux syslogd 1.4.1: restart.
Oct  2 12:59:56 SPlinux syslog: syslogd startup succeeded
Oct  2 12:59:56 SPlinux syslog: klogd startup succeeded
Oct  2 12:59:56 SPlinux kernel: klogd 1.4.1, log source = /proc/kmsg
started.
Oct  2 12:59:56 SPlinux kernel: Memory BAT mapping: BAT2=128Mb, BAT3=0Mb,
residual: 0Mb
Oct  2 12:59:56 SPlinux kernel: Total memory = 128MB; using 256kB for hash
table (at c02c0000)
Oct  2 12:59:56 SPlinux kernel: Linux version 2.4.21-rc1
(maurie@SPlinux.sps.mot.com) (gcc version 3.3) #112 Thu Oct 2 12:54:32 EDT
2003
Oct  2 12:59:56 SPlinux kernel: Motorola SPS Sandpoint Test Platform
Oct  2 12:59:56 SPlinux kernel: Port by MontaVista Software, Inc.
(source@mvista.com)
Oct  2 12:59:56 SPlinux kernel: On node 0 totalpages: 32768
Oct  2 12:59:56 SPlinux kernel: zone(0): 32768 pages.
Oct  2 12:59:56 SPlinux kernel: zone(1): 0 pages.
Oct  2 12:59:56 SPlinux kernel: zone(2): 0 pages.
Oct  2 12:59:56 SPlinux kernel: Kernel command line: root=/dev/hda3
Oct  2 12:59:57 SPlinux kernel: OpenPIC Version 1.2 (1 CPUs and 11 IRQ
sources) at fdfd0000
Oct  2 12:59:57 SPlinux kernel: OpenPIC timer frequency is 100.000000 MHz
Oct  2 12:59:57 SPlinux kernel: time_init: decrementer frequency = 24.359418
MHz
Oct  2 12:59:57 SPlinux kernel: Console: colour dummy device 80x25
Oct  2 12:59:57 SPlinux kernel: Calibrating delay loop... 973.20 BogoMIPS
Oct  2 12:59:57 SPlinux kernel: Memory: 126552k available (1816k kernel
code, 784k data, 108k init, 0k highmem)
Oct  2 12:59:57 SPlinux kernel: Dentry cache hash table entries: 16384
(order: 5, 131072 bytes)
Oct  2 12:59:57 SPlinux kernel: Inode cache hash table entries: 8192 (order:
4, 65536 bytes)
Oct  2 12:59:57 SPlinux kernel: Mount cache hash table entries: 512 (order:
0, 4096 bytes)
Oct  2 12:59:57 SPlinux kernel: Buffer-cache hash table entries: 8192
(order: 3, 32768 bytes)
Oct  2 12:59:57 SPlinux kernel: Page-cache hash table entries: 32768 (order:
5, 131072 bytes)
Oct  2 12:59:57 SPlinux kernel: POSIX conformance testing by UNIFIX
Oct  2 12:59:57 SPlinux kernel: PCI: Probing PCI hardware
Oct  2 12:59:57 SPlinux kernel: Linux NET4.0 for Linux 2.4
Oct  2 12:59:57 SPlinux kernel: Based upon Swansea University Computer
Society NET3.039
Oct  2 12:59:57 SPlinux kernel: Initializing RT netlink socket
Oct  2 12:59:57 SPlinux kernel: Starting kswapd
Oct  2 12:59:57 SPlinux portmap: portmap startup succeeded
Oct  2 12:59:57 SPlinux kernel: devfs: v1.12c (20020818) Richard Gooch
(rgooch@atnf.csiro.au)
Oct  2 12:59:57 SPlinux kernel: devfs: boot_options: 0x0
Oct  2 12:59:57 SPlinux kernel: Installing knfsd (copyright (C) 1996
okir@monad.swb.de).
Oct  2 12:59:57 SPlinux kernel: Calling vmalloc from sishw_ext.pSR
Oct  2 12:59:57 SPlinux kernel: In vmalloc,size = 10, counter = 1
Oct  2 12:59:57 SPlinux kernel: In vmalloc,spacertn = c02976a4, spaceptr =
0xc02976c8
Oct  2 12:59:57 SPlinux kernel: Calling vmalloc from sishw_ext.pCR
Oct  2 12:59:57 SPlinux kernel: In vmalloc,size = 10, counter = 2
Oct  2 12:59:57 SPlinux kernel: In vmalloc,spacertn = c02976cc, spaceptr =
0xc02976f0
Oct  2 12:59:57 SPlinux kernel: ivideo.video_base = 0xb0000000,
ivideo.video_size = 0x0
Oct  2 12:59:57 SPlinux kernel: sisfb: Fatal error: Unable to reserve frame
buffer memory
Oct  2 12:59:57 SPlinux kernel: sisfb: Is there another framebuffer driver
active?
Oct  2 12:59:57 SPlinux kernel: Trying to vfree() bad address (c02976a4)
Oct  2 12:59:57 SPlinux kernel: Trying to vfree() bad address (c02976cc)
Oct  2 12:59:57 SPlinux kernel: vga16fb: mapped to 0xc9000000
Oct  2 12:59:57 SPlinux kernel: Console: switching to colour frame buffer
device 80x30
Oct  2 12:59:57 SPlinux kernel: fb0: VGA16 VGA frame buffer device
Oct  2 12:59:57 SPlinux kernel: initialize_kbd: Keyboard reset failed, no
ACK
Oct  2 12:59:57 SPlinux kernel: Detected PS/2 Mouse Port.
Oct  2 12:59:57 SPlinux kernel: pty: 256 Unix98 ptys configured
Oct  2 12:59:57 SPlinux kernel: Serial driver version 5.05c (2001-07-08)
with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
Oct  2 12:59:57 SPlinux kernel: keyboard: Timeout - AT keyboard not
present?(ed)
Oct  2 12:59:57 SPlinux kernel: ttyS00 at 0xfe0003f8 (irq = 4) is a 16550A
Oct  2 12:59:57 SPlinux kernel: RAMDISK driver initialized: 16 RAM disks of
4096K size 1024 blocksize
Oct  2 12:59:57 SPlinux kernel: loop: loaded (max 8 devices)
[root@SPlinux log]#


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Re: Vga on sandpoint

[Benjamin Herrenschmidt]

On Tue, 2003-10-07 at 17:40, maurie wrote:
> Linuxppc developers,
>
> 	I am attempting to get pci vga working on the sandpoint platform
> using dink32 to start linux.  I have tried several S3 cards with no video
> success.  The kernel has vga driver support for SIS and ATI support, but
> these are classified as experimental and will not compile, undefined
> externals for __floatsidf, __divdf3, __adddf3, __fixunsdfsi, __muldf3, and
> __vmalloc.

What kernel is this exactly ? Those symbols seem to imply something
is trying to do floating point in the kernel, which is totally
forbidden. Most video cards need to be soft-booted (POSTed) some way
before a kernel driver can use them. This require some firmware support,
typically an x86 BIOS emulator, do you have that in dink32 ? Some
fbdev's, afaik, can run a card booted from scratch (I think Matroxfb
with earlier cards and some clgen but I don't know the details).

Regarding __vmalloc, that should be defined (and exported) by the
core kernel.

Now, regarding he availability of the VGA space, that depends how
your host bridge is configured, do you have a pass-through window
to legacy VGA addresses on the PCI ?

Ben.


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Re: Vga on sandpoint

[Tom Rini]

On Tue, Oct 07, 2003 at 10:40:13AM -0500, maurie wrote:

> 	I am attempting to get pci vga working on the sandpoint platform
> using dink32 to start linux.  I have tried several S3 cards with no video
> success.  The kernel has vga driver support for SIS and ATI support, but
> these are classified as experimental and will not compile, undefined
> externals for __floatsidf, __divdf3, __adddf3, __fixunsdfsi, __muldf3, and
> __vmalloc.

I have used a Matrox Millenium I successfuly on a Motorola Sandpoint.
Newer cards, if you buy a PCI version, should also work.

--
Tom Rini
http://gate.crashing.org/~trini/

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