Oliver Endriss wrote:
Klaus Schmidinger wrote:
I'm currently improving VDR's CAM handling, and while doing so
I came across what seems to be a bug in the AV7110 driver code.
If I do
int fd = open("/dev/dvb/adapter0/ca0", O_RDWR);
ca_slot_info_t sinfo;
sinfo.num = 0;
ioctl(fd, CA_GET_SLOT_INFO, &sinfo);
to check whether the CI adapter contains a CAM, the value of
sinfo.flags is 0 as long as no CAM is inserted. When I insert a CAM,
it first goes to 1 (CA_CI_MODULE_PRESENT) and then to 3
(CA_CI_MODULE_PRESENT | CA_CI_MODULE_READY). So far everything is ok.
However, when I remove the CAM from the slot, sinfo.flags still remains
set to 3. It never goes back to 0.
Is this a bug or "intended behavior"?
Afaics it is a bug. Could you check whether CI_handle(in av7110_ca.c) is
called when you remove the CAM? If not it's a firmware bug.
CI_handle(in av7110_ca.c) never gets called.
I've added the following debug output to av7110.c (after trying directly in
av7110_ca.c, which didn't give any results):
case DATA_CI_GET:
{
printk("DATA_CI_GET: %d %d %d %d %d %d %d\n", __LINE__,
debibuf[0], debibuf[1], debibuf[2], debibuf[3], debibuf[4], debibuf[5]);//XXX
if ((debibuf[0] < 2) && debibuf[2] == 0xff) {
int flags = 0;
if (debibuf[5] > 0)
flags |= CA_CI_MODULE_PRESENT;
if (debibuf[5] > 5)
flags |= CA_CI_MODULE_READY;
printk("DATA_CI_GET: %d %04X %04X\n", __LINE__,
av7110->ci_slot[debibuf[0]].flags, flags);//XXX
av7110->ci_slot[debibuf[0]].flags = flags;
} else
ci_get_data(&av7110->ci_rbuffer, debibuf,
debilen);
break;
}
case DATA_COMMON_INTERFACE:
printk("DATA_COMMON_INTERFACE: %d %d\n", __LINE__,
debilen);//XXX
CI_handle(av7110, debibuf, debilen);
What I get in the log file is:
* Start VDR with no CAM in the slot
Nov 1 11:25:22 video kernel: DATA_CI_GET: 376 0 0 255 2 0 0
Nov 1 11:25:22 video kernel: DATA_CI_GET: 383 0000 0000
* Insert CAM into slot:
Nov 1 11:25:58 video kernel: DATA_CI_GET: 376 0 0 255 2 0 1
Nov 1 11:25:58 video kernel: DATA_CI_GET: 383 0000 0001
Nov 1 11:25:59 video kernel: DATA_CI_GET: 376 0 0 255 2 0 2
Nov 1 11:25:59 video kernel: DATA_CI_GET: 383 0001 0001
Nov 1 11:25:59 video kernel: DATA_CI_GET: 376 0 0 255 2 0 3
Nov 1 11:25:59 video kernel: DATA_CI_GET: 383 0001 0001
Nov 1 11:25:59 video kernel: DATA_CI_GET: 376 0 0 255 2 0 4
Nov 1 11:25:59 video kernel: DATA_CI_GET: 383 0001 0001
Nov 1 11:25:59 video kernel: DATA_CI_GET: 376 0 0 255 2 0 5
Nov 1 11:25:59 video kernel: DATA_CI_GET: 383 0001 0001
Nov 1 11:25:59 video kernel: DATA_CI_GET: 376 0 0 255 2 0 6
Nov 1 11:25:59 video kernel: DATA_CI_GET: 383 0001 0003
Nov 1 11:26:00 video vdr: [8977] CAM: module ready in slot 0
Nov 1 11:26:01 video kernel: DATA_CI_GET: 376 0 1 131 1 1 128
Nov 1 11:26:01 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:01 video kernel: DATA_CI_GET: 376 0 1 160 7 1 145
Nov 1 11:26:01 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:01 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:02 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:03 video kernel: DATA_CI_GET: 376 0 1 160 130 0 9
Nov 1 11:26:03 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:04 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:04 video kernel: DATA_CI_GET: 376 0 1 160 130 0 9
Nov 1 11:26:04 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:06 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:06 video kernel: DATA_CI_GET: 376 0 1 160 7 1 145
Nov 1 11:26:06 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:06 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:07 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:07 video kernel: DATA_CI_GET: 376 0 1 160 130 0 31
Nov 1 11:26:07 video vdr: [8977] CAM: AlphaCrypt, 01, 4A20, 4A20
Nov 1 11:26:08 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:09 video kernel: DATA_CI_GET: 376 0 1 160 7 1 145
Nov 1 11:26:09 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:09 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:10 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:10 video kernel: DATA_CI_GET: 376 0 1 160 130 0 17
Nov 1 11:26:11 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:12 video kernel: DATA_CI_GET: 376 0 1 160 7 1 145
Nov 1 11:26:12 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:13 video kernel: DATA_CI_GET: 376 0 1 128 2 1 128
Nov 1 11:26:13 video kernel: DATA_CI_GET: 376 0 1 160 130 0 10
Nov 1 11:26:13 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:14 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
Nov 1 11:26:16 video kernel: DATA_CI_GET: 376 0 1 128 2 1 0
(the last line is repeated continuously)
* Remove CAM from slot:
-> no more debug output at all.
Even though I call the CA_GET_SLOT_INFO ioctl() regularly to check
whether a module is still present, once a module has been found to
be ready, the code that would handle the CA_CI_MODULE_PRESENT and
CA_CI_MODULE_READY flags in av7110.c is never called again.
Klaus
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