Commit Graph

410 Commits

Author SHA1 Message Date
Stefan Richter
099398719b ieee1394: eth1394: some conditions are unlikely
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Stefan Richter
2e2173df68 ieee1394: eth1394: clean up fragment_overlap
offset > fi->offset + fi->len - 1  ==  !(offset < fi->offset + fi->len)
offset + len - 1 < fi->offset      ==  !(offset + len > fi->offset)
!(A || B)  ==  (!A && !B)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
01590d20b4 ieee1394: eth1394: don't use alloc_etherdev
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
8a62bf7978 ieee1394: eth1394: omit useless set_mac_address callback
We can't reconfigure the MAC address, hence we don't need the callback.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
599bba9647 ieee1394: eth1394: CONFIG_INET is always defined
because CONFIG_IEEE1394_ETH1394 depends on it.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
17bab407d5 ieee1394: eth1394: allow MTU bigger than 1500
RFC 2734 says: "IP-capable nodes may operate with an MTU size larger
than the default [1500 octets], but the means by which a larger MTU is
configured are beyond the scope of this document."

Allow users to set an MTU bigger than 1500.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Adrian Bunk
f982e5ffcf ieee1394: unexport highlevel_host_reset
highlevel_host_reset no longer has any modular users.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
246a5fdade ieee1394: eth1394: contain host reset
Call only eth1394's own host reset handler from .tx_timeout, not the
reset hooks of all other IEEE 1394 drivers.

A minor drawback of this patch is that ether1394_host_reset by timeout
is not serialized against ether1394_host_reset by bus reset.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
5009d26961 ieee1394: eth1394: shorter error messages
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
027611b842 ieee1394: eth1394: correct a memset argument
The old argument calculated the correct value in a wrong way.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
d06c1ddad9 ieee1394: eth1394: refactor .probe and .update
Move common code into an extra function.  This implicitly adds a missing
node_info->fifo = CSR1212_INVALID_ADDR_SPACE; to .update.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
5e7abccd38 ieee1394: eth1394: .probe and .update may sleep
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
efbeccf174 ieee1394: eth1394: coding style
Adjust white space and line wraps.  Remove unnecessary parentheses and
braces, unused macros, and some of the more redundant comments.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Jean Delvare
09d7a96f5a ieee1394: eth1394: Move common recv_init code to helper function
There is some common code between ether1394_open and ether1394_add_host
which can be moved to a separate helper function for a slightly smaller
eth1394 driver (-160 bytes on i386.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
70093cfde8 ieee1394: eth1394: don't autoload by hotplug when ohci1394 starts
Until now, ieee1394 put an IP-over-1394 capability entry into each new
host's config ROM.  As soon as the controller was initialized --- i.e.
right after modprobe ohci1394 --- this entry triggered a hotplug event
which typically caused auto-loading of eth1394.

This irritated or annoyed many users and distributors.  Of course they
could blacklist eth1394, but then ieee1394 wrongly advertized IP-over-
1394 capability to the FireWire bus.

Therefore
  - remove the offending kernel config option
    IEEE1394_CONFIG_ROM_IP1394,
  - let eth1394 add the ROM entry by itself, i.e. only after eth1394 was
    loaded.

This fixes http://bugzilla.kernel.org/show_bug.cgi?id=7793 .

To emulate the behaviour of older kernels, simply add the following to
to /etc/modprobe.conf:

install ohci1394 /sbin/modprobe eth1394; \
                 /sbin/modprobe --ignore-install ohci1394

Note, autoloading of eth1394 when an _external_ IP-over-1394 capable
device is discovered is _not_ affected by this patch.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
e00f04a70f ieee1394: eth1394: reduce excessive function inlining
Shrinks eth1394.ko by about 5%.

Many of these functions have only one caller and are therefore auto-
inlined anyway.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
2cd556ae61 ieee1394: eth1394: clean up host removal
ether1394_add_host() guarantees that hi->dev != NULL if hi != NULL.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
157188cb54 ieee1394: eth1394: unregister address space in failure case
Warn if hpsb_allocate_and_register_addrspace() failed.
Unregister the address space if something else failed.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
ea9057ad62 ieee1394: send async streams at S100
The comment says it all.  This affects only asynchronous streams sent
via raw1394; the eth1394 driver has own code and needs an own fix.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Milind Arun Choudhary
df18ce85de ieee1394: SPIN_LOCK_UNLOCKED cleanup
SPIN_LOCK_UNLOCKED cleanup,use DEFINE_SPINLOCK instead

Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
9be51c5d78 ieee1394: nodemgr: unify some error messages
Shrinks object file size a little bit.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
9324547235 ieee1394: nodemgr: less noise in dmesg
Everytime when eth1394 or a libraw1394 client updates the configuration
ROM, a certain sysfs attribute cannot be added since it already exists.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
d4c60085a9 ieee1394: unroll a weird macro
This is a coding style touch-up for ieee1394's handle_incoming_packet().

A preprocessor macro contained hardwired variable names and, even worse,
the 'break' keyword.  This macro is now unrolled and removed.

Also, all 'break's which had the effect of a return are replaced by
return.  And a FIXME comment is brought up to date.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Andrew Morton
b9e5eb067b ieee1394: iso.c needs sched.h
alpha:

drivers/ieee1394/iso.c: In function 'hpsb_iso_xmit_sync':
drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct'
drivers/ieee1394/iso.c:440: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/iso.c:440: error: (Each undeclared identifier is reported only once
drivers/ieee1394/iso.c:440: error: for each function it appears in.)
drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'signal_pending'
drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct'
drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'schedule'
drivers/ieee1394/iso.c: In function 'hpsb_iso_wake':
drivers/ieee1394/iso.c:562: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
2007-04-30 00:00:29 +02:00
Stefan Richter
9543a931dc ieee1394: some more includes
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Torsten Kaiser
3a23a81e83 ieee1394: ieee1394_transactions needs sched.h
drivers/ieee1394/ieee1394_transactions.c fails for me if CONFIG_SMP=n

gcc complains:
  CC      drivers/ieee1394/ieee1394_transactions.o
drivers/ieee1394/ieee1394_transactions.c: In function 'hpsb_get_tlabel':
drivers/ieee1394/ieee1394_transactions.c:183: error:
'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/ieee1394_transactions.c:183: error: (Each undeclared
identifier is reported only once

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added comment)
2007-04-30 00:00:29 +02:00
Randy Dunlap
504945c9c6 ieee1394: ieee1394_core printk format
Fix printk format string:
drivers/ieee1394/ieee1394_core.c:702: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
7542e0e696 ieee1394: remove usage of skb_queue as packet queue
This considerably reduces the memory requirements for a packet and
eliminates ieee1394's dependency on CONFIG_NET.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
d265250341 ieee1394: csr1212: log if devices have CRC errors in their ROM
This will point out firmware bugs.

I tested with 11 SBP-2 devices and one OS X PC and got these errors from
two old CD-RWs only.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
511f7b3227 ieee1394: csr1212: more sensible names for jump targets
Code beneath two labels called "fail" is actually also reached in case
of success.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
c94ccf9e33 ieee1394: csr1212: warn on unreachable code
We want bugs to show themselves.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
a1c6250cb6 ieee1394: shrink csr1212_new_string_descriptor_leaf
Make unnecessarily generic code specific and thus simpler.
Shrink a lookup table from 128 to 16 bytes.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
c868ae2a1d ieee1394: csr1212: coding style
Whitespace, line breaks, braces...

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
fd2f3bddae ieee1394: replace vmalloc by kmalloc in csr1212
The biggest chunk ever allocated by CSR1212_MALLOC is 1024 Bytes +
sizeof(struct csr1212_csr_rom_cache) big.  Most of the time much
smaller data structures are allocated.  Therefore vmalloc is a waste.

The one exception is csr1212_append_new_cache() which is called to
append a chunk of CSR1212_EXTENDED_ROM_SIZE + sizeof(struct
csr1212_csr_rom_cache) if the currently allocated ROM cache is too
small.  CSR1212_EXTENDED_ROM_SIZE is generously defined as 256 kBytes.
In SVN commit 1220, Steve Kinneberg lowered this to 2 kBytes in the
config_rom_2.4 branch.  This same commit also switched CSR1212_MALLOC
from kmalloc to vmalloc in the SVN trunk branch:

> r1220 | kberg | 2004-05-31 01:51:44 +0200 (Mon, 31 May 2004) | 13 lines
>
> CSR1212 Extended ROM bug fixes:
> trunk line changes:
>   - Use vmalloc instead of kmalloc
>   - Change delayed_reset_bus() to operate in a work_queue instead of a
>     timer interrupt.
>   - Fix hpsb_allocate_and_register_addrspace() to not allocate space
>     on top of already allocated space.
>   - Fix problems in csr1212.c filling ConfigROM images when extend
>     ROMs are present.
> config-rom-2.4 changes:
>   - Changed extended rom allocation from 256K to 8K.
(It was actually 2 kB, not 8 kB.)
>   - Fix hpsb_allocate_and_register_addrspace() to not allocate space
>     on top of already allocated space.
>   - Fix problems in csr1212.c filling ConfigROM images when extend
>     ROMs are present.

I am now setting CSR1212_EXTENDED_ROM_SIZE to 2 kB minus the overhead of
struct csr1212_csr_rom_cache.  Note, this code path is not used by the
in-kernel drivers though.  raw1394 could trigger it, but the respective
libraw1394 functions don't exist yet.

Furthermore, userspace programs can replace the entire local ROM via
raw1394.  If kmalloc does not fulfill their needs --- well, tough luck.
I decree that nobody needs such huge extended ROMs.  (Extended ROMs are
defined by IEEE 1212 clause 7.7.18.  The spec does not impose
practically relevant restrictions on the size of extended ROM chunks.)

Another potentially demanding use of CSR1212_MALLOC is if external
FireWire devices come with Extended ROM entries.  If they are too big
for kmalloc (or have been too big for vmalloc) we just fail to read
their ROM.  This is quite unlikely though, to my knowledge.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
c1a37f2c65 ieee1394: de-inline some functions
This small reorganization of public csr1212 functions saves one
exported symbol and a few bytes in the driver modules.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
64ff712321 ieee1394: stricter error checks in csr1212
return -EINVAL becomes BUG_ON in checks of function call parameters.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
982610bd0d ieee1394: csr1212: rename some types
Use u8, u32 etc. instead of u_int8_t, csr1212_quad_t etc.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
7fb9addba8 ieee1394: drop csr1212's support for external compilation
csr1212 was written to be compiled either as part of the ieee1394 kernel
driver or of an anticipated IEEE 1212 userspace library.  We now drop
support for the latter.  The costs in terms of code footprint and depth
of abstraction are not countered by any actual benefit.

Also remove some obsolete #includes.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
6c88e47566 ieee1394: remove unused csr1212 code
Delete unused code.
Make some extern functions static.
Remove superfluous inline keywords.
Move private definitions from csr1212.h to csr1212.c.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
e167c88ebb ieee1394: small header cleanup
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
afd6546d8d ieee1394: move some comments from declaration to definition
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
ef8153348f ieee1394: remove declarations of nonexisting functions
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Andrew Morton
f84c922ba1 ieee1394: sbp2: include fixes
drivers/ieee1394/sbp2.c: In function 'sbp2util_access_timeout':
drivers/ieee1394/sbp2.c:399: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/sbp2.c:399: error: (Each undeclared identifier is reported only once
drivers/ieee1394/sbp2.c:399: error: for each function it appears in.)
drivers/ieee1394/sbp2.c:399: warning: implicit declaration of function 'signal_pending'
drivers/ieee1394/sbp2.c:399: warning: implicit declaration of function 'schedule_timeout'
drivers/ieee1394/sbp2.c: In function 'sbp2_prep_command_orb_sg':
drivers/ieee1394/sbp2.c:1438: warning: implicit declaration of function 'page_address'
drivers/ieee1394/sbp2.c:1438: warning: passing argument 2 of 'dma_map_single' makes pointer from integer without a cast
drivers/ieee1394/sbp2.c: In function 'sbp2_handle_status_write':
drivers/ieee1394/sbp2.c:1842: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)

Possibly due to changes in -mm, but this file should explicitly include the
headers for the stuff it uses.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
2007-04-30 00:00:27 +02:00
Stefan Richter
3d269cb50c ieee1394: sbp2: move some memory allocations into non-atomic context
When the command ORB pool is created, the ORB list won't be accessed
concurrently.  Therefore we don't have to take the spinlock there.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Stefan Richter
2446a79f4f ieee1394: sbp2: optimize DMA direction of s/g tables
Unlike the name suggests, "cmd->scatter_gather_element" holds only the
s/g table, not the actual s/g elements.  Since the table is only read
but never written by the device, DMA_BIDIRECTIONAL can be replaced by
DMA_TO_DEVICE which may be cheaper on some architectures.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Stefan Richter
0555659d63 ieee1394: sbp2: enforce 32bit DMA mapping
In order to use OHCI-1394 physical DMA, all s/g elements, s/g tables,
ORBs, and response buffers have to reside within the first 4 GB of the
FireWire controller's physical address space.  Set the correct mask for
DMA mappings.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Stefan Richter
f412bf440b ieee1394: sbp2: remove unnecessary alignments of struct members
The members "dma_addr_t command_orb_dma" and "dma_addr_t sge_dma" of
sbp2.h::sbp2_command_info do not have to be aligned themselves --- only
the memory which they point to has to be.

The member "struct sbp2_command_orb command_orb" has to be aligned on
4 bytes boundary which is guaranteed because it contains u32 members.

The member "struct sbp2_unrestricted_page_table scatter_gather_element",
i.e. the SBP-2 s/g table, has to be aligned on 8 bytes boundary
according to the SBP-2 spec.  This is not a requirement for FireWire
controllers but could be expected by SBP-2 targets.

I see no need to align the members command_orb and
scatter_gather_element on CPU cacheline boundaries.  It could have
performance benefits, but on the other hand sbp2 has a somewhat wasteful
allocation scheme which should be optimized first before further tweaks
like cacheline alignments.  (E.g. don't always allocate SG_ALL s/g table
elements.)

Note, before as well as after the patch, the code relies on the
assumption that memory alignment in the virtual address space is
preserved in the physical address space after DMA mapping.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Greg Kroah-Hartman
a2a0f74dc1 IEEE1394: remove rwsem use from ieee1394 core
The subsystem rwsem is not used by the driver core at all, so the use of
it in the ieee1394 code doesn't make any sense.  They might possibly
want to use a local lock, but as most of these operations are already
protected by a local lock, it really doesn't look like it would be
needed.

Cc: Ben Collins <bcollins@debian.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linux1394-devel <linux1394-devel@lists.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:30 -07:00
Eric Rannaud
bf62456eb9 uevent: use add_uevent_var() instead of open coding it
Make use of add_uevent_var() instead of (often incorrectly) open coding it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Eric Rannaud <eric.rannaud@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Arnaldo Carvalho de Melo
eddc9ec53b [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:10 -07:00
Arnaldo Carvalho de Melo
98e399f82a [SK_BUFF]: Introduce skb_mac_header()
For the places where we need a pointer to the mac header, it is still legal to
touch skb->mac.raw directly if just adding to, subtracting from or setting it
to another layer header.

This one also converts some more cases to skb_reset_mac_header() that my
regex missed as it had no spaces before nor after '=', ugh.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:41 -07:00
Arnaldo Carvalho de Melo
459a98ed88 [SK_BUFF]: Introduce skb_reset_mac_header(skb)
For the common, open coded 'skb->mac.raw = skb->data' operation, so that we can
later turn skb->mac.raw into a offset, reducing the size of struct sk_buff in
64bit land while possibly keeping it as a pointer on 32bit.

This one touches just the most simple case, next will handle the slightly more
"complex" cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:24:32 -07:00
Stefan Richter
199c1167f5 ieee1394: change deprecation status of dv1394
Nobody ported ffmpeg from dv1394 to rawiso yet, and there is no
justification to remove dv1394 right now.

Nevertheless, a strong deprecation of this ABI makes a lot of sense,
especially as Kristian H's drivers shape up to be an attractive
alternative to the existing ones.  But we don't have a schedule at the
moment.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-09 18:52:27 +02:00
Stefan Richter
7a9eeb2fa1 ieee1394: fix oops on "modprobe -r ohci1394" after network class_device conversion
The networking subsystem has been converted from class_device to device
but ieee1394 hasn't.  This results in a 100% reproducible NULL pointer
dereference if the ohci1394 driver module is unloaded while the eth1394
module is still loaded.
http://lkml.org/lkml/2006/11/16/147
http://lkml.org/lkml/2007/3/14/4

This is a regression in 2.6.21-rc1.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Ismail Dönmez <ismail@pardus.org.tr>
2007-03-23 10:55:25 +01:00
Stefan Richter
22a38e72bc firewire: put old and new stack into same Kconfig submenu
Screenshot from "make menuconfig":
...
  ?????????????????????? IEEE 1394 (FireWire) support ???????????????????????
  ?  Arrow keys navigate the menu.  <Enter> selects submenus --->.          ?
...
  ? ??????????????????????????????????????????????????????????????????????? ?
  ? ?    <M> IEEE 1394 (FireWire) support (JUJU alternative stack, experim? ?
  ? ?    <M>   Support for OHCI firewire host controllers                 ? ?
  ? ?    <M>   Support for storage devices (SBP-2 protocol driver)        ? ?
  ? ?    <M> IEEE 1394 (FireWire) support                                 ? ?
  ? ?    ---   Subsystem Options                                          ? ?
  ? ?    [ ]   Excessive debugging output                                 ? ?
...
  ?                    <Select>    < Exit >    < Help >                     ?
  ???????????????????????????????????????????????????????????????????????????

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-03-09 22:02:38 +01:00
Linus Torvalds
874ff01bd9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (25 commits)
  Documentation/kernel-docs.txt update.
  arch/cris: typo in KERN_INFO
  Storage class should be before const qualifier
  kernel/printk.c: comment fix
  update I/O sched Kconfig help texts - CFQ is now default, not AS.
  Remove duplicate listing of Cris arch from README
  kbuild: more doc. cleanups
  doc: make doc. for maxcpus= more visible
  drivers/net/eexpress.c: remove duplicate comment
  add a help text for BLK_DEV_GENERIC
  correct a dead URL in the IP_MULTICAST help text
  fix the BAYCOM_SER_HDX help text
  fix SCSI_SCAN_ASYNC help text
  trivial documentation patch for platform.txt
  Fix typos concerning hierarchy
  Fix comment typo "spin_lock_irqrestore".
  Fix misspellings of "agressive".
  drivers/scsi/a100u2w.c: trivial typo patch
  Correct trivial typo in log2.h.
  Remove useless FIND_FIRST_BIT() macro from cardbus.c.
  ...
2007-02-19 13:29:02 -08:00
Linus Torvalds
920841d8d1 Merge branch 'for-linus' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  ieee1394: fix another deadlock in nodemgr
  ieee1394: cycle timer read extension for raw1394
2007-02-19 13:07:19 -08:00
Tobias Klauser
c5a69d57eb Storage class should be before const qualifier
The C99 specification states in section 6.11.5:

The placement of a storage-class specifier other than at the
beginning of the declaration specifiers in a declaration is an
obsolescent feature.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-02-17 20:11:19 +01:00
Stefan Richter
a65421ea3f ieee1394: fix another deadlock in nodemgr
A "modprobe ohci1394; sleep 1.5; modprobe -r ohci1394" could get stuck
in uninterruptible state, especially if an external node was connected.
http://bugzilla.kernel.org/show_bug.cgi?id=7792

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-17 14:41:18 +01:00
Pieter Palmers
3dc5ea9b31 ieee1394: cycle timer read extension for raw1394
This implements the simultaneous read of the isochronous cycle timer and
the system clock (in usecs).  This allows to express the exact receive
time of an ISO packet as a system time with microsecond accuracy.
http://bugzilla.kernel.org/show_bug.cgi?id=7773

The counterpart patch for libraw1394 can be found at
http://thread.gmane.org/gmane.linux.kernel.firewire.devel/8934

Patch update (Stefan R.):  Disable preemption and local interrupts.
Prevent integer overflow.  Add paranoid error checks and kerneldoc to
hpsb_read_cycle_timer.  Move it to other ieee1394_core high-level API
functions.  Change comments.  Adjust whitespace.  Rename struct
_raw1394_cycle_timer.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Pieter Palmers <pieterp@joow.be>
Acked-by: Dan Dennedy <dan@dennedy.org>
2007-02-17 14:39:33 +01:00
Tim Schmielau
cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00
Jean Delvare
12a917f69d i2c: Declare more i2c_adapter parent devices
Declare the parent device of i2c_adapter devices each time we can
easily do so. It makes the i2c_adapter appear at the right place in
the device tree, rather than as a platform device.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Len Brown <len.brown@intel.com>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Cc: Jody McIntyre <scjody@modernduck.com>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: v4l-dvb-maintainer@linuxtv.org
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
2007-02-13 22:09:03 +01:00
Arjan van de Ven
2b8693c061 [PATCH] mark struct file_operations const 3
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:45 -08:00
Stefan Richter
91efa46205 ieee1394: fix host device registering when nodemgr disabled
Since my commit 8252bbb136 in 2.6.20-rc1,
host devices have a dummy driver attached.  Alas the driver was not
registered before use if ieee1394 was loaded with disable_nodemgr=1.

This resulted in non-functional FireWire drivers or kernel lockup.
http://bugzilla.kernel.org/show_bug.cgi?id=7942

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 21:36:22 +01:00
David Moore
a5782010b4 ieee1394: video1394: DMA fix
This together with the phys_to_virt fix in lib/swiotlb.c::swiotlb_sync_sg
fixes video1394 DMA on machines with DMA bounce buffers, especially Intel
x86-64 machines with > 3GB RAM.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: David Moore <dcm@acm.org>
Tested-by: Nicolas Turro <Nicolas.Turro@inrialpes.fr>
2007-02-08 21:36:18 +01:00
Stefan Richter
0fe4c6fcac ieee1394: raw1394: prevent unloading of low-level driver
Unloading the low-level driver module of a FireWire host can lead to
all sorts of trouble if a raw1394 userspace client is using the host.
Just disallow it by incrementing the LLD's module reference count on
a RAW1394_REQ_SET_CARD write operation.  Decrement it when the file
is closed.

This feature wouldn't be relevant if "modprobe -r video1394" or
"modprobe -r dv1394" didn't automatically unload ohci1394 too.
http://bugzilla.kernel.org/show_bug.cgi?id=7701

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Dan Dennedy <dan@dennedy.org>
2007-02-08 21:36:01 +01:00
Stefan Richter
12ba145c94 ieee1394: dv1394: tidy up card removal
small coding style touch-up and terser coding

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 21:00:53 +01:00
Stefan Richter
88e7bf2a4c ieee1394: dv1394: fix CardBus card ejection
Fix NULL pointer dereference on hot ejection of a FireWire card while
dv1394 was loaded.  http://bugzilla.kernel.org/show_bug.cgi?id=7121
I did not test card ejection with open /dev/dv1394 files yet.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 21:00:48 +01:00
Stefan Richter
beb2fdcad1 ieee1394: sbp2: lower block queue alignment requirement
The old setting is copy & waste from usb-storage and doesn't apply to
sbp2.  There is only 4-byte alignment required for everything, except
for S/G table elements which have to be 8-byte aligned according to the
SBP-2 spec.  (They happen to be ____cacheline_aligned in our
implementation.  Whether that's good is another question.)

We now simply don't tune block queue alignment at all.  The default
alignment would surely never become anything else than a multiple of 4,
else tons of calls to blk_queue_dma_alignment would have to be added
everywhere in drivers/...

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:59:54 +01:00
Stefan Richter
9c31b38723 ieee1394: sbp2: remove bogus "emulated" host flag
There is no emulation going on here.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:59:48 +01:00
Stefan Richter
d06170a9ba ieee1394: save one word in struct hpsb_host
hpsb_host.config_roms is a bitfield of which only one bit is currently
used.  hpsb_host.update_config_rom is only a Boolean.  Neither one is
accessed in hot code paths or with alignment requirements.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:59:27 +01:00
Stefan Richter
3360177c62 ieee1394: restore config ROM when resuming
After PM suspend + resume, the local configuration ROM was not restored.
This prevented remote nodes from recognizing the resuming machine.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:59:19 +01:00
Stefan Richter
083922fe1c ieee1394: ohci1394: drop pcmcia-cs compatibility code
#ifdef PCMCIA is only true if compiled inside pcmcia-cs, isn't it?

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:59:09 +01:00
Stefan Richter
b2051f8873 ieee1394: nodemgr: check info_length in ROM header earlier
The whole ROM area which is covered by the crc_length field of the ROM
header was fetched before the info_length field was checked for correct
general ROM format.  This might be wasteful or even dangerous with nodes
with minimal ROM, nonstandard ROM, or corrupt ROM.

Perform this check at the earliest opportunity.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:59:03 +01:00
Adrian Bunk
e658bc556b the scheduled IEEE1394_OUI_DB removal
This patch contains the scheduled IEEE1394_OUI_DB removal.

Signed-off-by: Adrian Bunk <bunk@stusta.de>

Update: Also remove drivers/ieee1394/.gitignore.
Remove now unused struct members in drivers/ieee1394/nodemgr.h.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:57:43 +01:00
Adrian Bunk
d395a1774f the scheduled IEEE1394_EXPORT_FULL_API removal
This patch contains the scheduled IEEE1394_EXPORT_FULL_API removal.

Signed-off-by: Adrian Bunk <bunk@stusta.de>

Update: Pull proper portion of feature-removal-schedule.txt.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:57:27 +01:00
Stefan Richter
4618fd3001 ieee1394: sbp2: use a better wildcard for blacklist
0x000000 could be a valid value to match against, but anything bigger
than 0xffffff cannot.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:57:08 +01:00
Kristian Hgsberg
dcb7112984 Add PCI class ID for firewire OHCI controllers.
Pull this define out of drivers/ieee1394/ohci1394.c and rename to match
other PCI class defines.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:55:23 +01:00
Andrea Guzzo
0749aaab49 ieee1394: modified csr1212_key_id_type_map to support lisight
This patch applies a little change in csr1212.c to fix iSight (firewire
digital camera) related issues (but maybe other firewire devices could
also need such modification)
The actual implementation of the "csr1212_key_id_type_map" table doesn't
support some node types used by the iSight for the audio unit. This
limit makes the csr scanning routine to never see the audio unit node ,
and consequently the iSight driver probe() routine to be never called
and there is no way to hook an isight device when it is inserted.

Signed-off-by: Andrea Guzzo <xant@xant.net>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-02-08 20:55:02 +01:00
Stefan Richter
1a74bc68e4 ieee1394: sbp2: fix probing of some DVD-ROM/RWs
Since commit 98e238cd42 in Linux 2.6.19,
"ieee1394: sbp2: don't prefer MODE SENSE 10", some FireWire DVD-ROMs and
DVD-RWs were mistaken as CD-ROM because sr_mod now sent MODE SENSE 6.
The MMC command set includes only MODE SENSE 10.
http://bugzilla.kernel.org/show_bug.cgi?id=7800

This fix lets sbp2 switch scsi_device.use_10_for_rw on for MMC LUs.
This should rather be done in the command set driver sr_mod, not in the
sbp2 transport driver, and an according patch will follow for a next
Linux release.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-01-10 20:24:42 +01:00
Stefan Richter
97d552e35d ieee1394: sbp2: fix bogus dma mapping
Need to use a PCI device, not a FireWire host device.  Problem found by
Andreas Schwab, mistake pointed out by Benjamin Herrenschmidt.
http://ozlabs.org/pipermail/linuxppc-dev/2006-December/029595.html

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Andreas Schwab <schwab@suse.de>
2006-12-30 14:26:59 +01:00
Stefan Richter
b2bb550c4a ieee1394: sbp2: pass REQUEST_SENSE through to the target
Delete some incorrect code, left over from the initial driver submission
in March 2001.

SBP-2 targets should provide sense data via the SBP-2 status block
(autosense).  We have to pass the REQUEST_SENSE command through to
targets which don't implement autosense, if there are any, and to
accomodate application clients which use this command.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-30 14:26:41 +01:00
Jean Delvare
3269711b76 i2c: Discard the i2c algo del_bus wrappers
They are all only calling i2c_del_adapter, so we may as well do
it directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:33 +01:00
Josef Sipek
4db61081fa [PATCH] struct path: convert ieee1394
Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:46 -08:00
Stefan Richter
ec9b7e1044 ieee1394: sbp2: code formatting around work_struct stuff
Merge is finished, can bring the code in readable style again.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:23:25 +01:00
Stefan Richter
1e4f7bc8f8 ieee1394: nodemgr: remove a kcalloc
Was I sleepwalking when I wrote this?

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:12:16 +01:00
Stefan Richter
3015c73978 ieee1394: conditionally export ieee1394_bus_type
Follow-up to patch "Consolidate driver registering":
Since I plan the lifetime of Linux 2.6.20 to be the deprecation phase
of CONFIG_IEEE1394_EXPORT_FULL_API, it seems fair to keep all previously
exported symbols available with this option until this phase is over.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:12:02 +01:00
Ben Collins
ed30c26ee8 ieee1394: Consolidate driver registering
This patch consolidates some bookkeeping for driver registering. It
closely models what pci_register_driver() does. The main addition is
that the owner of the driver is set, so we get a proper symlink
for /sys/bus/ieee1394/driver/*/module.

Also moves setting of name and bus type into nodemgr. Because of this,
we can remove the EXPORT_SYMBOL for ieee1394_bus_type, since it's now
only used in ieee1394.ko.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:11:55 +01:00
Stefan Richter
9b7d9c096d ieee1394: sbp2: convert from PCI DMA to generic DMA
API conversion without change in functionality

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:11:43 +01:00
Stefan Richter
d41bba2d3a ieee1394: nodemgr: spaces to tabs
whitespace pedantry

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:11:28 +01:00
Stefan Richter
8252bbb136 ieee1394: nodemgr: fix deadlock in shutdown
If "modprobe ohci1394" was quickly followed by "modprobe -r ohci1394",
say with 1 second pause in between, the modprobe -r got stuck in
uninterruptible sleep in kthread_stop.  At the same time the knodemgrd
slept uninterruptibly in bus_rescan_devices_helper.  That's because
driver_detach took the semaphore of the PCI device and
bus_rescan_devices_helper wanted to take the semaphore of the FireWire
host device's parent, which is the same semaphore. This was a regression
since Linux 2.6.16, commit bf74ad5bc4,
"Hold the device's parent's lock during probe and remove".

The fix (or workaround) adds a dummy driver to the hpsb_host device. Now
bus_rescan_devices_helper won't scan the host device anymore.  This
doesn't hurt since we have no drivers which will bind to these devices
and it is unlikely that there will ever be such a driver.  The dummy
driver is befittingly presented as a representation of ieee1394 itself.

Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=6706

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:10:23 +01:00
Stefan Richter
cec1a31196 ieee1394: nodemgr: remove duplicate assignment
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:06:05 +01:00
Luca Tettamanti
ff6a4cd2e1 sbp2: make 1bit bitfield unsigned
A signed single-bit bitfield doesn't make much sense. Make it unsigned.

Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:47 +01:00
Stefan Richter
4e834da1da ieee1394: schedule *_oui sysfs attributes for removal
There is no manpower available to reform oui.db into a library for use
in more kernel subsystems.  The low ratio of usefulness to size and the
occasional need to update oui.db from IEEE's official list suggest to
drop oui.db.  I plan to make a userspace script available which
translates the remaining numeric sysfs attributes to names of
organizations.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:34 +01:00
Stefan Richter
e9429dfdc3 ieee1394: schedule unused symbol exports for removal
This also means that former parts of ieee1394's API will be subject to
change or removal.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:24 +01:00
Stefan Richter
861646f522 ieee1394: dv1394: schedule for feature removal
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:05:12 +01:00
Stefan Richter
9868e0ec03 ieee1394: raw1394: defer feature removal of old isoch interface
Known to be affected:
 - libdc1394: prefers video1394 for now, old-style raw1394 support might
   be dropped eventually
 - OpenH323 PWLib, AVC video input module: uses libraw1394's old API

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:59 +01:00
Stefan Richter
63cca59e89 ieee1394: ohci1394: call PMac code in shutdown only for proper machines
There has been an if(...) missing, for ages.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:35 +01:00
Stefan Richter
5370f1f5e9 ieee1394: ohci1394: reformat PPC_PMAC platform code
Adjust whitespace and line lengths

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:24 +01:00
Stefan Richter
48cfae44b4 ieee1394: ohci1394: add PPC_PMAC platform code to driver probe
Fixes http://bugzilla.kernel.org/show_bug.cgi?id=7431
iBook G3 threw a machine check exception and put the display backlight
to full brightness after ohci1394 was unloaded and reloaded.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2006-12-07 23:04:14 +01:00