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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6

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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: sbp2: provide fallback if mgt_ORB_timeout is missing
  ieee1394: add documentation entry to MAINTAINERS
  ieee1394: update URLs in debugging-via-ohci1394.txt
This commit is contained in:
Linus Torvalds 2009-10-14 15:36:19 -07:00
commit a3ccf63ee6
3 changed files with 24 additions and 24 deletions
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8
Documentation/debugging-via-ohci1394.txt
View file

@ -64,14 +64,14 @@ be used to view the printk buffer of a remote machine, even with live update.
Bernhard Kaindl enhanced firescope to support accessing 64-bit machines
from 32-bit firescope and vice versa:
- ftp://ftp.suse.de/private/bk/firewire/tools/firescope-0.2.2.tar.bz2
- http://halobates.de/firewire/firescope-0.2.2.tar.bz2
and he implemented fast system dump (alpha version - read README.txt):
- ftp://ftp.suse.de/private/bk/firewire/tools/firedump-0.1.tar.bz2
- http://halobates.de/firewire/firedump-0.1.tar.bz2
There is also a gdb proxy for firewire which allows to use gdb to access
data which can be referenced from symbols found by gdb in vmlinux:
- ftp://ftp.suse.de/private/bk/firewire/tools/fireproxy-0.33.tar.bz2
- http://halobates.de/firewire/fireproxy-0.33.tar.bz2
The latest version of this gdb proxy (fireproxy-0.34) can communicate (not
yet stable) with kgdb over an memory-based communication module (kgdbom).
@ -178,7 +178,7 @@ Step-by-step instructions for using firescope with early OHCI initialization:
Notes
-----
Documentation and specifications: ftp://ftp.suse.de/private/bk/firewire/docs
Documentation and specifications: http://halobates.de/firewire/
FireWire is a trademark of Apple Inc. - for more information please refer to:
http://en.wikipedia.org/wiki/FireWire

1
MAINTAINERS
View file

@ -2615,6 +2615,7 @@ L: linux1394-devel@lists.sourceforge.net
W: http://www.linux1394.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
S: Maintained
F: Documentation/debugging-via-ohci1394.txt
F: drivers/ieee1394/
IEEE 1394 RAW I/O DRIVER

39
drivers/firewire/sbp2.c
View file

@ -188,14 +188,7 @@ static struct fw_device *target_device(struct sbp2_target *tgt)
/* Impossible login_id, to detect logout attempt before successful login */
#define INVALID_LOGIN_ID 0x10000
/*
* Per section 7.4.8 of the SBP-2 spec, a mgt_ORB_timeout value can be
* provided in the config rom. Most devices do provide a value, which
* we'll use for login management orbs, but with some sane limits.
*/
#define SBP2_MIN_LOGIN_ORB_TIMEOUT 5000U /* Timeout in ms */
#define SBP2_MAX_LOGIN_ORB_TIMEOUT 40000U /* Timeout in ms */
#define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
#define SBP2_ORB_TIMEOUT 2000U /* Timeout in ms */
#define SBP2_ORB_NULL 0x80000000
#define SBP2_RETRY_LIMIT 0xf /* 15 retries */
#define SBP2_CYCLE_LIMIT (0xc8 << 12) /* 200 125us cycles */
@ -1034,7 +1027,6 @@ static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory,
{
struct fw_csr_iterator ci;
int key, value;
unsigned int timeout;
fw_csr_iterator_init(&ci, directory);
while (fw_csr_iterator_next(&ci, &key, &value)) {
@ -1059,17 +1051,7 @@ static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory,
case SBP2_CSR_UNIT_CHARACTERISTICS:
/* the timeout value is stored in 500ms units */
timeout = ((unsigned int) value >> 8 & 0xff) * 500;
timeout = max(timeout, SBP2_MIN_LOGIN_ORB_TIMEOUT);
tgt->mgt_orb_timeout =
min(timeout, SBP2_MAX_LOGIN_ORB_TIMEOUT);
if (timeout > tgt->mgt_orb_timeout)
fw_notify("%s: config rom contains %ds "
"management ORB timeout, limiting "
"to %ds\n", tgt->bus_id,
timeout / 1000,
tgt->mgt_orb_timeout / 1000);
tgt->mgt_orb_timeout = (value >> 8 & 0xff) * 500;
break;
case SBP2_CSR_LOGICAL_UNIT_NUMBER:
@ -1087,6 +1069,22 @@ static int sbp2_scan_unit_dir(struct sbp2_target *tgt, u32 *directory,
return 0;
}
/*
* Per section 7.4.8 of the SBP-2 spec, a mgt_ORB_timeout value can be
* provided in the config rom. Most devices do provide a value, which
* we'll use for login management orbs, but with some sane limits.
*/
static void sbp2_clamp_management_orb_timeout(struct sbp2_target *tgt)
{
unsigned int timeout = tgt->mgt_orb_timeout;
if (timeout > 40000)
fw_notify("%s: %ds mgt_ORB_timeout limited to 40s\n",
tgt->bus_id, timeout / 1000);
tgt->mgt_orb_timeout = clamp_val(timeout, 5000, 40000);
}
static void sbp2_init_workarounds(struct sbp2_target *tgt, u32 model,
u32 firmware_revision)
{
@ -1171,6 +1169,7 @@ static int sbp2_probe(struct device *dev)
&firmware_revision) < 0)
goto fail_tgt_put;
sbp2_clamp_management_orb_timeout(tgt);
sbp2_init_workarounds(tgt, model, firmware_revision);
/*