30 Aug, 2013
2 commits
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Access to the slow_subchannel_set has to be secured via the
slow_subchannel_lock.Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Some functions that do arch specific resume actions are called
directly from swsusp_asm64.S . Before we add another function call
provide a generic s390_early_resume function which can be used
for this purpose.Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
22 Aug, 2013
3 commits
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With the introduction of PCI it became apparent that s390 should
convert to generic hardirqs as too many drivers do not have the
correct dependency for GENERIC_HARDIRQS. On the architecture
level s390 does not have irq lines. It has external interrupts,
I/O interrupts and adapter interrupts. This patch hard-codes all
external interrupts as irq #1, all I/O interrupts as irq #2 and
all adapter interrupts as irq #3. The additional information from
the lowcore associated with the interrupt is stored in the
pt_regs of the interrupt frame, where the interrupt handler can
pick it up. For PCI/MSI interrupts the adapter interrupt handler
scans the relevant bit fields and calls generic_handle_irq with
the virtual irq number for the MSI interrupt.Reviewed-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
The PCI code is the first user of adapter interrupts vectors.
Add a set of helpers to airq.c to separate the adatper interrupt
code from the PCI bits. The helpers allow for adapter interrupt
vectors of any size.Reviewed-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.Signed-off-by: Jingoo Han
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
16 Jul, 2013
1 commit
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Fix a "set but not used" warning found via make W=1.
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
27 Jun, 2013
9 commits
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There are three users of adapter interrupts: AP, QDIO and PCI. Each
registers a single adapter interrupt with independent ISCs. Define
a "struct airq" with the interrupt handler, a pointer and a mask for
the local summary indicator and the ISC for the adapter interrupt
source. Convert the indicator array with its fixed number of adapter
interrupt sources per ISE to an array of hlists. This removes the
limitation to 32 adapter interrupts per ISC and allows for arbitrary
memory locations for the local summary indicator.Signed-off-by: Martin Schwidefsky
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Copy the interrupt parameters from the lowcore to the pt_regs structure
in entry[64].S and reduce the arguments of the low level interrupt handler
to the pt_regs pointer only. In addition move the test-pending-interrupt
loop from do_IRQ to entry[64].S to make sure that interrupt information
is always delivered via pt_regs.Signed-off-by: Martin Schwidefsky
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Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
Move the code to issue the set adapter device controls command to
chsc.c and make it accessible for the qdio code via the wrapper
chsc_sadc.Reviewed-by: Ursula Braun
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Cleanup the function qdio_setup_get_ssqd. Fix some possible
memleaks and an unchecked allocation and create a wrapper
for SSQD in chsc.c .Reviewed-by: Ursula Braun
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Introduce two new ioctls CHSC_ON_CLOSE_SET and CHSC_ON_CLOSE_REMOVE
that allow to add and remove one CHSC that is unconditionally executed
when the CHSC device node is closed.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
In order to allow serialization of dynamic I/O with this patch
the /dev/chsc character device can only be accessed by one
single opener. Any subsequent open calls are rejected with EBUSY.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
This patch adds a new ioctl CHSC_START_SYNC that allows to
execute any synchronous CHSC that is provided by user space.Signed-off-by: Michael Holzheu
Signed-off-by: Martin Schwidefsky -
Remove the unused function qdio_trace_aob.
Acked-by: Ursula Braun
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
15 May, 2013
1 commit
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Add new attributes "chid" and "chid_external" to the channel-path
sysfs directory. These attributes contain information related to
the channel-ID of the channel-path.Reviewed-by: Sebastian Ott
Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky
02 May, 2013
3 commits
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Provide a 'condev' keyword to cio_ignore to (un)ignore the
CCW console device.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Provide an 'ipldev' keyword to cio_ignore to (un)ignore the
CCW or FCP based boot device.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Pull VFS updates from Al Viro,
Misc cleanups all over the place, mainly wrt /proc interfaces (switch
create_proc_entry to proc_create(), get rid of the deprecated
create_proc_read_entry() in favor of using proc_create_data() and
seq_file etc).7kloc removed.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (204 commits)
don't bother with deferred freeing of fdtables
proc: Move non-public stuff from linux/proc_fs.h to fs/proc/internal.h
proc: Make the PROC_I() and PDE() macros internal to procfs
proc: Supply a function to remove a proc entry by PDE
take cgroup_open() and cpuset_open() to fs/proc/base.c
ppc: Clean up scanlog
ppc: Clean up rtas_flash driver somewhat
hostap: proc: Use remove_proc_subtree()
drm: proc: Use remove_proc_subtree()
drm: proc: Use minor->index to label things, not PDE->name
drm: Constify drm_proc_list[]
zoran: Don't print proc_dir_entry data in debug
reiserfs: Don't access the proc_dir_entry in r_open(), r_start() r_show()
proc: Supply an accessor for getting the data from a PDE's parent
airo: Use remove_proc_subtree()
rtl8192u: Don't need to save device proc dir PDE
rtl8187se: Use a dir under /proc/net/r8180/
proc: Add proc_mkdir_data()
proc: Move some bits from linux/proc_fs.h to linux/{of.h,signal.h,tty.h}
proc: Move PDE_NET() to fs/proc/proc_net.c
...
26 Apr, 2013
1 commit
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When we fetch an interrupt on the CCW console using tsch (via
ccw_device_wait_idle formerly known as wait_cons_dev) we increment
the irq count for the affected interruption class but it is not
accounted as an IO interrupt.This is broken since commit b603d258a43b4e7339660bdd3b5c25eacd603e54
"s390: remove superfluous tpi from wait_cons_dev"Fix it so that the sum of the individual interrupts per class matches
the number of IO interrupts again.Reported-by: Gerald Schaefer
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
17 Apr, 2013
12 commits
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cio_validate_subchannel is used to do some basic checks to find out
if it's worth to further investigate a subchannel. Move the allocation
and initialization of the subchannels locks to css_alloc_subchannel.Clean up the functions involved while at it.
Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Via ccw_device_init_count we keep track of how many devices are in
asynchronous device recognition/initialization. For early devices this
variable was not only used prior to its initialization but used
incorrectly (incremented but never decremented). Fix this by using static
initialization for this variable (and friends), make them visible to
device.c only, and decrement the counter after recognition of early
devices is finished.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Make css_probe_device static and remove an unimplemented prototype.
Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Use cio_register_early_subchannels to register early subchannels
which are already in use. Call this function before we do the
actual subchannel scanning loop. This helps us to get rid of some
more special cases regarding the console subchannel.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Remove the static console ccw device (and friends) and use dynamic
allocation for these structures. With this change the console
device is treated (mostly) like any other ccw device and we can
remove some special cases.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Remove the static console subchannel (and friends) and use dynamic
allocation for these structures. With this change the console
subchanel is treated (mostly) like any other subchannel and we can
remove some special cases.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Split the subchannel registration in device_initialize and device_add
and move the initialization part inside the allocation function. With
this change we can use refcounting during the complete lifespan of a
subchannel which is important for devices where we do the actually
registration at a later time.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
force_console is used to wake up the CCW based console device to
print a panic message in case something goes wrong in a suspend
or resume cycle. Stop using the static console_subchannel and add
a parameter to this function to specify which ccw device we have
to wake up.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
wait_cons_dev is used to busy wait for an interrupt on the console
ccw device. Stop using the static console_subchannel and add a
parameter to this function to specify on which ccw device/subchannel
we have to do the polling.While at it rename the function to ccw_device_wait_idle and
move it to device.cReviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky -
Use BITS_TO_LONGS() instead of __BITOPS_WORDS() that is considered
to be private macro in asm/bitops.h for s390.Signed-off-by: Akinobu Mita
Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Make use of the stored copy of format 1 channel-path data instead
of querying the information every time the corresponding function
is called.Reviewed-by: Sebastian Ott
Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky -
Collect format 1 channel-path description data for each CHPID
and update the information in one place.Reviewed-by: Sebastian Ott
Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky
10 Apr, 2013
1 commit
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Signed-off-by: Al Viro
07 Mar, 2013
2 commits
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Let the bus code process scm availability information and
notify scm device drivers about the new state.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky -
Extend the notify callback of scm_driver by an event parameter
to allow to distinguish between different notifications.Reviewed-by: Peter Oberparleiter
Signed-off-by: Sebastian Ott
Signed-off-by: Peter Oberparleiter
Signed-off-by: Martin Schwidefsky
28 Feb, 2013
1 commit
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Remove unused function parameters.
Signed-off-by: Stefan Raspl
Signed-off-by: Martin Schwidefsky
27 Feb, 2013
1 commit
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Pull vfs pile (part one) from Al Viro:
"Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent
locking violations, etc.The most visible changes here are death of FS_REVAL_DOT (replaced with
"has ->d_weak_revalidate()") and a new helper getting from struct file
to inode. Some bits of preparation to xattr method interface changes.Misc patches by various people sent this cycle *and* ocfs2 fixes from
several cycles ago that should've been upstream right then.PS: the next vfs pile will be xattr stuff."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits)
saner proc_get_inode() calling conventions
proc: avoid extra pde_put() in proc_fill_super()
fs: change return values from -EACCES to -EPERM
fs/exec.c: make bprm_mm_init() static
ocfs2/dlm: use GFP_ATOMIC inside a spin_lock
ocfs2: fix possible use-after-free with AIO
ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path
get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero
target: writev() on single-element vector is pointless
export kernel_write(), convert open-coded instances
fs: encode_fh: return FILEID_INVALID if invalid fid_type
kill f_vfsmnt
vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op
nfsd: handle vfs_getattr errors in acl protocol
switch vfs_getattr() to struct path
default SET_PERSONALITY() in linux/elf.h
ceph: prepopulate inodes only when request is aborted
d_hash_and_lookup(): export, switch open-coded instances
9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate()
9p: split dropping the acls from v9fs_set_create_acl()
...
23 Feb, 2013
1 commit
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Signed-off-by: Al Viro
14 Feb, 2013
2 commits
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Fix name clash with some common code device drivers and add "tod"
to all tod clock access function names.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky -
Convert the defines for the !CONFIG_SCM* stuff to static inline
functions.Signed-off-by: Sebastian Ott
Signed-off-by: Martin Schwidefsky
