[linux-dvb] Re: AMD64 and DVB

[Max Nickel <max@unmuted.de>]

Am Sa, den 07.02.2004 schrieb Johannes Stezenbach um 16:06:
> Max Nickel wrote:
> > Hi,
> > i bought a brand new Athlon64 yesterday. So far everything is running
> > fine, except the DVB drivers.
> 
> Which driver? From 2.6.x kernel, CVS or release 1.1.0?
> 

I tested it with the drivers of 2.6.1 and 2.6.2 kernel release.

> > The problem is, that the av7110 driver makes excessive use of crc32 when
> > it tries to load the firmware, which causes problems on a 64Bit System
> > :)
> 
> Hm, I wonder what your definition of "excessive" is...
> What exactly is the problem?
> 
> > Is there any way to fix this, or some smart workaround ?
> 
> The firmware crc checks are just for fun ;-), you can
> comment them out if you want. But maybe the checks fail
> because something else corrupts the firmware? Some
> alignment issue?
> 

well it fails on multiple occasions. First it fails on the crc32 checks
when it wants to load the firmware. When i comment it out, it fails
cause it thinks the firmware has the wrong size. If i also comment this
check, i get this error:

Unable to handle kernel paging request at ffffff00014ca000 RIP:
<ffffffff802ab88b>{memcpy+11}PML4 64a063 PGD 37ee3067 PMD 3fc61067 PTE 0
Oops: 0000 [1]
CPU 0
Pid: 6637, comm: modprobe Not tainted
RIP: 0010:[<ffffffff802ab88b>] <ffffffff802ab88b>{memcpy+11}
RSP: 0018:000001003a8d9d20  EFLAGS: 00010246
RAX: 000001000064e000 RBX: 0000000000000047 RCX: 00000000000000a7
RDX: 0000000000000000 RSI: ffffff00014c9ffc RDI: 000001000064e6c8
RBP: 0000010036ef8000 R08: 0000000000000002 R09: ffffff0000278a32
R10: 0000000000000000 R11: 000000000000ad55 R12: 000000002e034c04
R13: 0000000000000049 R14: 0000000000035400 R15: ffffff0001495134
FS:  0000002a98460060(0000) GS:ffffffff8063ee80(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffffff00014ca000 CR3: 0000000000101000 CR4: 00000000000006a0
Process modprobe (pid: 6637, stackpage=1003f9f2260)
Stack: ffffffffa005a4c4 0000076800004400 0000000000002000
0000010036ef8000
       000001003e7697c0 00000000cfffee00 000001003e7697fc
ffffffffa006a900
       ffffffffa005a95d ffffffffa006a900
Call Trace:<ffffffffa005a4c4>{:dvb_ttpci:load_dram+260}
<ffffffffa005a95d>{:dvb_ttpci:av7110_bootarm+685}
       <ffffffffa00636c1>{:dvb_ttpci:av7110_attach+753}
<ffffffffa0049813>{:saa7146:saa7146_init_one+1155}
       <ffffffff801a4a71>{sysfs_create+113}
<ffffffff802b016d>{pci_device_probe_static+61}
       <ffffffff802b01c9>{__pci_device_probe+41}
<ffffffff802b0223>{pci_device_probe+51}
       <ffffffff802fc397>{bus_match+71}
<ffffffff802fc4b6>{driver_attach+70}
       <ffffffff802fc75e>{bus_add_driver+126}
<ffffffff802fcad2>{driver_register+50}
       <ffffffff802b047b>{pci_register_driver+107}
<ffffffffa0049b4f>{:saa7146:saa7146_register_extension+207}
       <ffffffffa006d00d>{:dvb_ttpci:av7110_init+13}
<ffffffff8014d851>{sys_init_module+321}
       <ffffffff80111894>{system_call+124}
 
Code: f3 48 a5 89 d1 f3 a4 c3 66 66 66 90 66 66 66 90 66 66 66 90
RIP <ffffffff802ab88b>{memcpy+11} RSP <000001003a8d9d20>
CR2: ffffff00014ca000


> > P.S. During compiling i noticed some warnings about casts from Ints to
> > Pointers that have a different size. If you are interested i can send
> > you the list of files where it occured
> 
> Sure. We don't have 64bit machines, so we can only fix if we
> get detailed info.
> 

i gather the information for you later this evening.

> 
> Thanks,
> Johannes
> 

thanks
Max



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