25 May, 2013
2 commits
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Add RapidIO enumeration/discovery start from user space. User space
start allows to defer RapidIO fabric scan until the moment when all
participating endpoints are initialized avoiding mandatory synchronized
start of all endpoints (which may be challenging in systems with large
number of RapidIO endpoints).Signed-off-by: Alexandre Bounine
Cc: Matt Porter
Cc: Li Yang
Cc: Kumar Gala
Cc: Andre van Herk
Cc: Micha Nelissen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Systems that use RapidIO fabric may need to implement their own
enumeration and discovery methods which are better suitable for needs of
a target application.The following set of patches is intended to simplify process of
introduction of new RapidIO fabric enumeration/discovery methods.The first patch offers ability to add new RapidIO enumeration/discovery
methods using kernel configuration options. This new configuration
option mechanism allows to select statically linked or modular
enumeration/discovery method(s) from the list of existing methods or use
external module(s).This patch also updates the currently existing enumeration/discovery
code to be used as a statically linked or modular method.The corresponding configuration option is named "Basic
enumeration/discovery" method. This is the only one configuration
option available today but new methods are expected to be introduced
after adoption of provided patches.The second patch address a long time complaint of RapidIO subsystem
users regarding fabric enumeration/discovery start sequence. Existing
implementation offers only a boot-time enumeration/discovery start which
requires synchronized boot of all endpoints in RapidIO network. While
it works for small closed configurations with limited number of
endpoints, using this approach in systems with large number of endpoints
is quite challenging.To eliminate requirement for synchronized start the second patch
introduces RapidIO enumeration/discovery start from user space.For compatibility with the existing RapidIO subsystem implementation,
automatic boot time enumeration/discovery start can be configured in by
specifying "rio-scan.scan=1" command line parameter if statically linked
basic enumeration method is selected.This patch:
Rework to implement RapidIO enumeration/discovery method selection
combined with ability to use enumeration/discovery as a kernel module.This patch adds ability to introduce new RapidIO enumeration/discovery
methods using kernel configuration options. Configuration option
mechanism allows to select statically linked or modular
enumeration/discovery method from the list of existing methods or use
external modules. If a modular enumeration/discovery is selected each
RapidIO mport device can have its own method attached to it.The existing enumeration/discovery code was updated to be used as
statically linked or modular method. This configuration option is named
"Basic enumeration/discovery" method.Several common routines have been moved from rio-scan.c to make them
available to other enumeration methods and reduce number of exported
symbols.Signed-off-by: Alexandre Bounine
Cc: Matt Porter
Cc: Li Yang
Cc: Kumar Gala
Cc: Andre van Herk
Cc: Micha Nelissen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Dec, 2012
1 commit
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Pull driver core updates from Greg Kroah-Hartman:
"Here's the large driver core updates for 3.8-rc1.The biggest thing here is the various __dev* marking removals. This
is going to be a pain for the merge with different subsystem trees, I
know, but all of the patches included here have been ACKed by their
various subsystem maintainers, as they wanted them to go through here.If this is too much of a pain, I can pull all of them out of this tree
and just send you one with the other fixes/updates and then, after
3.8-rc1 is out, do the rest of the removals to ensure we catch them
all, it's up to you. The merges should all be trivial, and Stephen
has been doing them all in linux-next for a few weeks now quite
easily.Other than the __dev* marking removals, there's nothing major here,
some firmware loading updates and other minor things in the driver
core.All of these have (much to Stephen's annoyance), been in linux-next
for a while.Signed-off-by: Greg Kroah-Hartman "
Fixed up trivial conflicts in drivers/gpio/gpio-{em,stmpe}.c due to gpio
update.* tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (93 commits)
modpost.c: Stop checking __dev* section mismatches
init.h: Remove __dev* sections from the kernel
acpi: remove use of __devinit
PCI: Remove __dev* markings
PCI: Always build setup-bus when PCI is enabled
PCI: Move pci_uevent into pci-driver.c
PCI: Remove CONFIG_HOTPLUG ifdefs
unicore32/PCI: Remove CONFIG_HOTPLUG ifdefs
sh/PCI: Remove CONFIG_HOTPLUG ifdefs
powerpc/PCI: Remove CONFIG_HOTPLUG ifdefs
mips/PCI: Remove CONFIG_HOTPLUG ifdefs
microblaze/PCI: Remove CONFIG_HOTPLUG ifdefs
dma: remove use of __devinit
dma: remove use of __devexit_p
firewire: remove use of __devinitdata
firewire: remove use of __devinit
leds: remove use of __devexit
leds: remove use of __devinit
leds: remove use of __devexit_p
mmc: remove use of __devexit
...
29 Nov, 2012
1 commit
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CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.Signed-off-by: Bill Pemberton
Cc: Matt Porter
Acked-by: Alexandre Bounine
Signed-off-by: Greg Kroah-Hartman
17 Nov, 2012
1 commit
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Fix rapidio kernel-doc warnings:
Warning(drivers/rapidio/rio.c:415): No description found for parameter 'local'
Warning(drivers/rapidio/rio.c:415): Excess function parameter 'lstart' description in 'rio_map_inb_region'
Warning(include/linux/rio.h:290): No description found for parameter 'switches'
Warning(include/linux/rio.h:290): No description found for parameter 'destid_table'Signed-off-by: Randy Dunlap
Cc: Matt Porter
Acked-by: Alexandre Bounine
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Oct, 2012
1 commit
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Update discovery process initialization based on Andrew Morton's comments:
https://lkml.org/lkml/2012/10/3/552.This update processes all enumerating mports first and schedules discovery
work after that. If the initialization routine fails to allocate resources
needed to execute discovery, it abandons discovery for all ports.Signed-off-by: Alexandre Bounine
Cc: Matt Porter
Cc: Li Yang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Oct, 2012
2 commits
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Modify mport initialization routine to run the RapidIO discovery process
asynchronously. This allows to have an arbitrary order of enumerating and
discovering ports in systems with multiple RapidIO controllers without
creating a deadlock situation if enumerator port is registered after a
discovering one.Making netID matching to mportID ensures consistent net ID assignment in
multiport RapidIO systems with asynchronous discovery process (global
counter implementation is affected by race between threads).[akpm@linux-foundation.org: tweak code layput]
Signed-off-by: Alexandre Bounine
Cc: Matt Porter
Cc: Li Yang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add common inbound memory mapping/unmapping interface. This allows to make
local memory space accessible from the RapidIO side using hardware mapping
capabilities of RapidIO bridging devices. The new interface is intended to
enable data transfers between RapidIO devices in combination with DMA engine
support.This patch is based on patch submitted by Li Yang
(https://lists.ozlabs.org/pipermail/linuxppc-dev/2009-April/071210.html)Signed-off-by: Alexandre Bounine
Cc: Matt Porter
Cc: Li Yang
Cc: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jun, 2012
1 commit
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Adds DMA Engine framework support into RapidIO subsystem.
Uses DMA Engine DMA_SLAVE interface to generate data transfers to/from
remote RapidIO target devices.Introduces RapidIO-specific wrapper for prep_slave_sg() interface with an
extra parameter to pass target specific information.Uses scatterlist to describe local data buffer. Address flat data buffer
on a remote side.Signed-off-by: Alexandre Bounine
Cc: Dan Williams
Acked-by: Vinod Koul
Cc: Li Yang
Cc: Matt Porter
Cc: Paul Gortmaker
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Apr, 2011
1 commit
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Fix a possible problem with mport registration left non-cleared after
fsl_rio_setup() exits on link error. Abort mport initialization if
registration failed.This patch is applicable to 2.6.39-rc1 only. The problem does not exist
for earlier versions.Signed-off-by: Alexandre Bounine
Cc: Kumar Gala
Cc: Matt Porter
Cc: Li Yang
Cc: Thomas Moll
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Mar, 2011
4 commits
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Removes resource reservation from the common sybsystem initialization code
and make it part of mport driver initialization. This resolves conflict
with resource reservation by device specific mport drivers.Signed-off-by: Alexandre Bounine
Cc: 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 -
Changes mport ID and host destination ID assignment to implement unified
method common to all mport drivers. Makes "riohdid=" kernel command line
parameter common for all architectures with support for more that one host
destination ID assignment.Signed-off-by: Alexandre Bounine
Cc: 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 -
Subsystem initialization sequence modified to support presence of multiple
RapidIO controllers in the system. The new sequence is compatible with
initialization of PCI devices.Signed-off-by: Alexandre Bounine
Cc: 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 -
This set of patches eliminates RapidIO dependency on PowerPC architecture
and makes it available to other architectures (x86 and MIPS). It also
enables support of new platform independent RapidIO controllers such as
PCI-to-SRIO and PCI Express-to-SRIO.This patch:
Extend number of mport callback functions to eliminate direct linking of
architecture specific mport operations.Signed-off-by: Alexandre Bounine
Cc: 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
14 Jan, 2011
2 commits
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Add definition of the unique device identifier field in the component tag.
RIO_CTAG_UDEVID does not take all 32 bits of the component tag value to
allow future extensions to the component tag use.Selected size of the RIO_CTAG_UDEVID field (17 bits) is sufficient to
accommodate maximum number of endpoints in large RIO network (16-bit id)
plus switches.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 -
Change code to use one storage location common for switches and endpoints.
This eliminates unnecessary device type checks during basic access
operations. Logic that assigns destid to RIO devices stays unchanged - as
before, switches use an associated destid because they do not have their
own.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
12 Nov, 2010
1 commit
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The size calculation is done incorrectly here because it should include
both the start and end (end - start + 1). It's easiest to just use
resource_size() which does the right thing.I was worried there was something non-standard going on because the
printk() subtracts "end - 1", but the rest of the file uses the normal
resource size calculations. This function is only called from
fsl_rio_setup() in arch/powerpc/sysdev/fsl_rio.c and the calculation
there is also:port->iores.start = law_start;
port->iores.end = law_start + law_size - 1;So I think this is the correct fix.
Signed-off-by: Dan Carpenter
Cc: Alexandre Bounine
Acked-by: Li Yang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Oct, 2010
5 commits
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RapidIO spec v.2.1 adds Idle Sequence 2 into LP-Serial Physical Layer.
The fix ensures that corresponding bits are not corrupted during error
handling.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 -
Detects RIO link to the already enumerated device and properly sets links
between device objects. Changes to the enumeration/discovery logic:1. Use Master Enable bit to signal end of the enumeration - agents may
start their discovery process as soon as they see this bit set
(Component Tag register was used before for this purpose).2. Enumerator sets Component Tag (!= 0) immediately during device
setup. This allows to identify the device if the redundant route
exists in a RIO system.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 -
Add explicit device access check before performing device enumeration.
This gives a chance to clear possible link error conditions by issuing
safe maintenance read request(s).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 -
Add check for access to port-write (PW) message source device before
processing the PW message. If source RIO device is not available (power
down or RIO link failure) trace back to a last available switch/port on
the PW message route and service failure at that point.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 -
The default error-stopped state handler provides recovery mechanism as
defined by RIO specification.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
17 Jun, 2010
1 commit
-
Signed-off-by: Uwe Kleine-König
Signed-off-by: Jiri Kosina
31 May, 2010
1 commit
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Fix a bunch of new rapidio kernel-doc warnings:
Warning(include/linux/rio.h:123): No description found for parameter 'comp_tag'
Warning(include/linux/rio.h:123): No description found for parameter 'phys_efptr'
Warning(include/linux/rio.h:123): No description found for parameter 'em_efptr'
Warning(include/linux/rio.h:123): No description found for parameter 'pwcback'
Warning(include/linux/rio.h:247): No description found for parameter 'set_domain'
Warning(include/linux/rio.h:247): No description found for parameter 'get_domain'
Warning(drivers/rapidio/rio-scan.c:1133): No description found for parameter 'rdev'
Warning(drivers/rapidio/rio-scan.c:1133): Excess function parameter 'port' description in 'rio_init_em'
Warning(drivers/rapidio/rio.c:349): No description found for parameter 'rdev'
Warning(drivers/rapidio/rio.c:349): Excess function parameter 'mport' description in 'rio_request_inb_pwrite'
Warning(drivers/rapidio/rio.c:393): No description found for parameter 'port'
Warning(drivers/rapidio/rio.c:393): No description found for parameter 'local'
Warning(drivers/rapidio/rio.c:393): No description found for parameter 'destid'
Warning(drivers/rapidio/rio.c:393): No description found for parameter 'hopcount'
Warning(drivers/rapidio/rio.c:393): Excess function parameter 'rdev' description in 'rio_mport_get_physefb'
Warning(drivers/rapidio/rio.c:845): Excess function parameter 'local' description in 'rio_std_route_clr_table'Signed-off-by: Randy Dunlap
Cc: Alexandre Bounine
Signed-off-by: Linus Torvalds
28 May, 2010
3 commits
-
Signed-off-by: Alexandre Bounine
Cc: Matt Porter
Cc: Li Yang
Cc: Kumar Gala
Cc: Thomas Moll
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add RapidIO Port-Write message handling in the context of Error
Management Extensions Specification Rev.1.3.Signed-off-by: Alexandre Bounine
Tested-by: Thomas Moll
Cc: Matt Porter
Cc: Li Yang
Cc: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extentions to RapidIO switch support:
1. modify switch route operation declarations to allow using single
switch-specific file for family of switches that share the same route
table operations.2. add standard route table operations for switches that that support
route table manipulation registers as defined in the Rev.1.3 of RapidIO
specification.3. add clear-route-table operation for switches
4. add CPSxx and TSIxxx families of RapidIO switches
Signed-off-by: Alexandre Bounine
Tested-by: Thomas Moll
Cc: Matt Porter
Cc: Li Yang
Cc: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Dec, 2008
1 commit
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functions calling devinit and called only from devinit
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
29 Apr, 2008
1 commit
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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
24 Jan, 2008
1 commit
-
drivers/rapidio/rio.c: In function 'rio_get_asm':
drivers/rapidio/rio.c:413: error: implicit declaration of function 'in_interrupt'
drivers/rapidio/rio.c: In function 'rio_init_mports':
drivers/rapidio/rio.c:480: warning: format '%8.8lx' expects type 'long unsigned int', but argument 2 has type 'resource_size_t'
drivers/rapidio/rio.c:480: warning: format '%8.8lx' expects type 'long unsigned int', but argument 3 has type 'resource_size_t'Signed-off-by: Kumar Gala
01 Jul, 2006
1 commit
-
Signed-off-by: Jörn Engel
Signed-off-by: Adrian Bunk
09 Jan, 2006
1 commit
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Include fixes for 2.6.14-git11. Should allow to remove sched.h from
module.h on i386, x86_64, arm, ia64, ppc, ppc64, and s390. Probably more
to come since I haven't yet checked the other archs.Signed-off-by: Tim Schmielau
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Nov, 2005
2 commits
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Updates the RIO messaging interface to pass a device instance into the
event registeration and callbacks.Signed-off-by: Matt Porter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Adds a RapidIO subsystem to the kernel. RIO is a switched fabric interconnect
used in higher-end embedded applications. The curious can look at the specs
over at http://www.rapidio.orgThe core code implements enumeration/discovery, management of
devices/resources, and interfaces for RIO drivers.There's a lot more to do to take advantages of all the hardware features.
However, this should provide a good base for folks with RIO hardware to start
contributing.Signed-off-by: Matt Porter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
