linux-toradex.git/drivers/rapidio/rio-sysfs.c, branch v3.2.46

rapidio: modify configuration to support PCI-SRIO controller

2011-03-24T02:46:42+00:00

1. Add an option to include RapidIO support if the PCI is available.
2. Add FSL_RIO configuration option to enable controller selection.
3. Add RapidIO support option into x86 and MIPS architectures.

Signed-off-by: Alexandre Bounine 
Acked-by: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Cc: Benjamin Herrenschmidt 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: add new sysfs attributes

2011-03-24T02:46:41+00:00

Add new sysfs attributes.

1. Routing information required to to reach the RIO device:
destid - device destination ID (real for for endpoint, route for switch)
hopcount - hopcount for maintenance requests (switches only)

2. device linking information:
lprev - name of device that precedes the given device in the enumeration
        or discovery order (displayed along with of the port to which it
        is attached).
lnext - names of devices (with corresponding port numbers) that are
        attached to the given device as next in the enumeration or
        discovery order (switches only)

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: fix sysfs config attribute to access 16MB of maint space

2011-02-25T23:07:37+00:00

Fixes sysfs config attribute to allow access to entire 16MB maintenance
space of RapidIO devices.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: integrate rio_switch into rio_dev

2011-01-13T16:03:17+00:00

Convert RIO switches device structures (rio_dev + rio_switch) into a
single allocation unit.

This change is based on the fact that RIO switches are using common RIO
device objects anyway.  Allocating RIO switch objects as RIO devices with
added space for switch information simplifies handling of RIO switch
devices.

Signed-off-by: Alexandre Bounine 
Cc: Kumar Gala 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Thomas Moll 
Cc: Micha Nelissen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

rapidio: modify sysfs initialization for switches

2010-10-28T01:03:15+00:00

1. Change to create attribute "routes" only for switches.

2. Add a switch-specific callback to create/remove proprietary attributes.

Signed-off-by: Alexandre Bounine 
Cc: Thomas Moll 
Cc: Matt Porter 
Cc: Li Yang 
Cc: Kumar Gala 
Cc: Micha Nelissen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

sysfs: add struct file* to bin_attr callbacks

2010-05-21T16:37:31+00:00

This allows bin_attr->read,write,mmap callbacks to check file specific data
(such as inode owner) as part of any privilege validation.

Signed-off-by: Chris Wright 
Signed-off-by: Greg Kroah-Hartman

rio: warn_unused_result warnings fix

2009-06-16T02:45:32+00:00

Adding failure path for the following two cases.

warning: ignoring return value of 'device_add', declared with attribute warn_unused_result
warning: ignoring return value of 'sysfs_create_bin_file', declared with attribute warn_unused_result

Signed-off-by: Li Yang 
Signed-off-by: Kumar Gala

[RAPIDIO] Auto-probe the RapidIO system size

2008-04-29T09:40:28+00:00

The RapidIO system size will auto probe in RIO setup.  The route table
and rionet_active in rionet.c are changed to be allocated dynamically
according to the size of the system.

Signed-off-by: Zhang Wei 
Signed-off-by: Andrew Morton 
Signed-off-by: Paul Mackerras

sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes

2007-07-11T23:09:09+00:00

Well, first of all, I don't want to change so many files either.

What I do:
Adding a new parameter "struct bin_attribute *" in the
.read/.write methods for the sysfs binary attributes.

In fact, only the four lines change in fs/sysfs/bin.c and
include/linux/sysfs.h do the real work.
But I have to update all the files that use binary attributes
to make them compatible with the new .read and .write methods.
I'm not sure if I missed any. :(

Why I do this:
For a sysfs attribute, we can get a pointer pointing to the
struct attribute in the .show/.store method,
while we can't do this for the binary attributes.
I don't know why this is different, but this does make it not
so handy to use the binary attributes as the regular ones.
So I think this patch is reasonable. :)

Who benefits from it:
The patch that exposes ACPI tables in sysfs
requires such an improvement.
All the table binary attributes share the same .read method.
Parameter "struct bin_attribute *" is used to get
the table signature and instance number which are used to
distinguish different ACPI table binary attributes.

Without this parameter, we need to offer different .read methods
for different ACPI table binary attributes.
This is impossible as there are various ACPI tables on different
platforms, and we don't know what they are until they are loaded.

Signed-off-by: Zhang Rui 
Signed-off-by: Greg Kroah-Hartman

sysfs: kill unnecessary attribute->owner

2007-07-11T23:09:06+00:00

sysfs is now completely out of driver/module lifetime game.  After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners.  Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.

This patch kills now unnecessary attribute->owner.  Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.

For more info regarding lifetime rule cleanup, please read the
following message.

  http://article.gmane.org/gmane.linux.kernel/510293

(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)

Signed-off-by: Tejun Heo 
Cc: Cornelia Huck 
Cc: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman