linux-toradex.git/include/asm-s390/cio.h, branch v2.6.23.5

[S390] vmur: fix diag14 exceptions with addresses > 2GB.

2007-08-22T11:51:47+00:00

There are several s390 diagnose calls, which must be executed below the
2GB memory boundary. In order to enforce this, those diagnoses must be
compiled into the kernel. Currently diag 14 can be called within the
vmur kernel module from addresses above 2GB. This leads to specification
exceptions. This patch moves diag10, diag14 and diag210 into the new
diag.c file.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens

[S390] cio: Channel-path configure function.

2007-04-27T14:01:39+00:00

Add a new attribute to the channel-path sysfs directory through which
channel-path configure operations can be triggered. Also listen for
hardware events requesting channel-path configure operations and
process them accordingly.

Signed-off-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens

[S390] cio/ipl: Clean interface between cio and ipl code.

2007-04-27T14:01:38+00:00

Clean interface between cio and ipl code, so Peter stops complaining.

Signed-off-by: Martin Schwidefsky 
Signed-off-by: Heiko Carstens

[S390] cio: Make ccw_dev_id_is_equal() more robust.

2006-12-04T14:40:54+00:00

Using memcmp to compare ccw_dev_id implies that the whole structure (incl.
padding) has always been completely initialized to sane values. Comparing
the structures field by field doesn't make such assumptions.

Signed-off-by: Cornelia Huck 
Signed-off-by: Martin Schwidefsky

[S390] Reset infrastructure for re-IPL.

2006-12-04T14:40:26+00:00

In case of re-IPL and diag308 doesn't work we have to reset all devices
manually and wait synchronously that each reset finished.
This patch adds the necessary infrastucture and the first exploiter of it.

Subsystems that need to add a function that needs to be called at re-IPL
may register/unregister this function via

struct reset_call {
	struct reset_call *next;
	void (*fn)(void);
};

void register_reset_call(struct reset_call *reset);
void unregister_reset_call(struct reset_call *reset);

When the registered function get called the context is:

- all cpus beside the current one are stopped
- all machine checks and interrupts are disabled
- prefixing is disabled
- a default machine check handler is available for use

The registered functions may not take any locks are sleep.

For the common I/O layer part of this patch:

Introduce a reset_call css_reset that does the following:
- clear all subchannels
- perform a rchp on all channel paths and wait for the resulting
  machine checks
This replaces the calls to clear_all_subchannels() and
cio_reset_channel_paths() for kexec and ccw reipl. reipl_ccw_dev() now
uses reipl_find_schid() to determine the subchannel id for a given
device id.
Also remove cio_reset_channel_paths() and friends since they are not
needed anymore.

Signed-off-by: Heiko Carstens 
Signed-off-by: Cornelia Huck 
Signed-off-by: Martin Schwidefsky

[S390] cio: Use ccw_dev_id and subchannel_id in ccw_device_private

2006-10-11T13:31:38+00:00

Use the proper structures to identify device and subchannel. Change
get_disc_ccwdev_by_devno() to get_disc_ccwdev_by_dev_id().

Signed-off-by: Cornelia Huck 
Signed-off-by: Martin Schwidefsky

[S390] ipl/dump on panic.

2006-09-20T13:58:49+00:00

It is now possible to specify a ccw/fcp dump device which is used to
automatically create a system dump in case of a kernel panic. The dump
device can be configured under /sys/firmware/dump.
In addition it is now possible to specify a ccw/fcp device which is used
for the next reboot of Linux. The reipl device can be configured under
/sys/firmware/reipl.

Signed-off-by: Michael Holzheu 
Signed-off-by: Martin Schwidefsky

[S390] path grouping and path verifications fixes.

2006-07-12T14:40:19+00:00

1. Multipath devices for which SetPGID is not supported are not handled well.
   Use NOP ccws for path verification (sans path grouping) when SetPGID is not
   supported.
2. Check for PGIDs already set with SensePGID on _all_ paths (not just the
   first one) and try to find a common one. Moan if no common PGID can be
   found (and use NOP verification). If no PGIDs have been set, use the css
   global PGID (as before). (Rationale: SetPGID will get a command reject if
   the PGID it tries to set does not match the already set PGID.)
3. Immediately before reboot, issue RESET CHANNEL PATH (rcp) on all chpids. This
   will remove the old PGIDs. rcp will generate solicited CRWs which can be
   savely ignored by the machine check handler (all other actions create
   unsolicited CRWs).

Signed-off-by: Cornelia Huck 
Signed-off-by: Martin Schwidefsky

[S390] cio async subchannel reprobe.

2006-06-29T12:57:03+00:00

Changes in the DASD driver require an asynchronous implementation of the
subchannel reprobe loop. This loop was so far only used by the blacklisting
mechanism but is now available to all CCW device drivers.

Signed-off-by: Peter Oberparleiter 
Signed-off-by: Martin Schwidefsky

Linux-2.6.12-rc2

2005-04-16T22:20:36+00:00

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!