1. 03 Jul, 2013 4 commits
    • Alexandre Bounine's avatar
      rapidio: change endpoint device name format · 6ca40c25
      Alexandre Bounine authored
      
      
      Change endpoint device name format to use a component tag value instead of
      device destination ID.
      
      RapidIO specification defines a component tag to be a unique identifier
      for devices in a network.  RapidIO switches already use component tag as
      part of their device name and also use it for device identification when
      processing error management event notifications.
      
      Forming an endpoint's device name using its component tag instead of
      destination ID allows to keep sysfs device directories unchanged in case
      if a routing process dynamically changes endpoint's destination ID as a
      result of route optimization.
      
      This change should not affect any existing users because a valid device
      destination ID always should be obtained by reading "destid" attribute and
      not by parsing device name.
      
      This patch also removes switchid member from struct rio_switch because it
      simply duplicates the component tag and does not have other use than in
      device name generation.
      Signed-off-by: default avatarAlexandre Bounine <alexandre.bounine@idt.com>
      Cc: Matt Porter <mporter@kernel.crashing.org>
      Cc: Li Yang <leoli@freescale.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
      Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
      Cc: Stef van Os <stef.van.os@Prodrive.nl>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6ca40c25
    • Alexandre Bounine's avatar
      rapidio: add udev notification · 3bdbb62f
      Alexandre Bounine authored
      
      
      Add RapidIO-specific modalias generation to enable udev notifications
      about RapidIO-specific events.
      
      The RapidIO modalias string format is shown below:
      
      "rapidio:vNNNNdNNNNavNNNNadNNNN"
      
      Where:
      v  - Device Vendor ID (16 bit),
      d  - Device ID (16 bit),
      av - Assembly Vendor ID (16 bit),
      ad - Assembly ID (16 bit),
      
      as they are reported in corresponding Capability Registers (CARs)
      of each RapidIO device.
      Signed-off-by: default avatarAlexandre Bounine <alexandre.bounine@idt.com>
      Cc: Matt Porter <mporter@kernel.crashing.org>
      Cc: Li Yang <leoli@freescale.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
      Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
      Cc: Stef van Os <stef.van.os@Prodrive.nl>
      Cc: Jean Delvare <jdelvare@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3bdbb62f
    • Alexandre Bounine's avatar
      rapidio: update enumerator registration mechanism · 9edbc30b
      Alexandre Bounine authored
      
      
      Update enumeration/discovery method registration mechanism to allow
      loading enumeration/discovery methods before all mports are registered.
      
      Existing statically linked RapidIO subsystem expects that all available
      RapidIO mport devices are initialized and registered before the
      enumeration/discovery method is registered.  Switching to loadable mport
      device drivers creates situation when mport device driver can be loaded
      after enumeration/discovery method is attached (e.g., loadable mport
      driver in a system with statically linked RapidIO core and enumerator).
      This also will happen in a system with hot-pluggable RapidIO controllers.
      
      To remove the dependency on the initialization/registration order this
      patch introduces enumeration/discovery registration mechanism that
      supports arbitrary registration order of mports and enumerator/discovery
      methods.
      
      The following registration rules are implemented:
      - only one enumeration/discovery method can be registered for given mport ID
        (including RIO_MPORT_ANY);
      - when new enumeration/discovery methods tries to attach to the registered mport
        device, method with matching mport ID will replace a default method previously
        registered for given mport (if any);
      - enumeration/discovery method with target ID=RIO_MPORT_ANY will be attached
        only to mports that do not have another enumerator attached to them;
      - when new mport device is registered with RapidIO subsystem, registration
        routine searches for the enumeration/discovery method with the best matching
        mport ID;
      Signed-off-by: default avatarAlexandre Bounine <alexandre.bounine@idt.com>
      Cc: Matt Porter <mporter@kernel.crashing.org>
      Cc: Li Yang <leoli@freescale.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
      Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
      Cc: Stef van Os <stef.van.os@Prodrive.nl>
      Cc: Jean Delvare <jdelvare@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9edbc30b
    • Alexandre Bounine's avatar
      rapidio: convert switch drivers to modules · 2ec3ba69
      Alexandre Bounine authored
      
      
      Rework RapidIO switch drivers to add an option to build them as loadable
      kernel modules.
      
      This patch removes RapidIO-specific vmlinux section and converts switch
      drivers to be compatible with LDM driver registration method.  To simplify
      registration of device-specific callback routines this patch introduces
      rio_switch_ops data structure.  The sw_sysfs() callback is removed from
      the list of device-specific operations because under the new structure its
      functions can be handled by switch driver's probe() and remove() routines.
      
      If a specific switch device driver is not loaded the RapidIO subsystem
      core will use default standard-based operations to configure a switch.
      Because the current implementation of RapidIO enumeration/discovery method
      relies on availability of device-specific operations for error management,
      switch device drivers must be loaded before the RapidIO
      enumeration/discovery starts.
      
      This patch also moves several common routines from enumeration/discovery
      module into the RapidIO core code to make switch-specific operations
      accessible to all components of RapidIO subsystem.
      Signed-off-by: default avatarAlexandre Bounine <alexandre.bounine@idt.com>
      Cc: Matt Porter <mporter@kernel.crashing.org>
      Cc: Li Yang <leoli@freescale.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
      Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
      Cc: Stef van Os <stef.van.os@Prodrive.nl>
      Cc: Jean Delvare <jdelvare@suse.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2ec3ba69
  2. 24 May, 2013 2 commits
    • Alexandre Bounine's avatar
      rapidio: add enumeration/discovery start from user space · bc8fcfea
      Alexandre Bounine authored
      
      
      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: default avatarAlexandre Bounine <alexandre.bounine@idt.com>
      Cc: Matt Porter <mporter@kernel.crashing.org>
      Cc: Li Yang <leoli@freescale.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
      Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      bc8fcfea
    • Alexandre Bounine's avatar
      rapidio: make enumeration/discovery configurable · a11650e1
      Alexandre Bounine authored
      
      
      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: default avatarAlexandre Bounine <alexandre.bounine@idt.com>
      Cc: Matt Porter <mporter@kernel.crashing.org>
      Cc: Li Yang <leoli@freescale.com>
      Cc: Kumar Gala <galak@kernel.crashing.org>
      Cc: Andre van Herk <andre.van.herk@Prodrive.nl>
      Cc: Micha Nelissen <micha.nelissen@Prodrive.nl>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a11650e1
  3. 16 Nov, 2012 1 commit
  4. 15 Oct, 2012 1 commit
  5. 10 Oct, 2012 2 commits
  6. 05 Oct, 2012 5 commits
  7. 31 May, 2012 1 commit
  8. 14 Apr, 2011 1 commit
  9. 23 Mar, 2011 3 commits
  10. 13 Jan, 2011 3 commits
  11. 27 Oct, 2010 5 commits
  12. 30 May, 2010 1 commit
    • Randy Dunlap's avatar
      rapidio: fix new kernel-doc warnings · 97ef6f74
      Randy Dunlap authored
      
      
      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: default avatarRandy Dunlap <randy.dunlap@oracle.com>
      Cc: Alexandre Bounine <alexandre.bounine@idt.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      97ef6f74
  13. 27 May, 2010 4 commits
  14. 01 May, 2008 1 commit
    • Randy Dunlap's avatar
      [RAPIDIO] fix current kernel-doc notation · 9941d945
      Randy Dunlap authored
      
      
      Fix current (-git16) missing docbook/kernel-doc notation in RapidIO files.
      
      Warning(linux-2.6.25-git16//include/linux/rio.h:187): No description found for parameter 'sys_size'
      Warning(linux-2.6.25-git16//include/linux/rio.h:187): No description found for parameter 'phy_type'
      
      Warning(linux-2.6.25-git16//arch/powerpc/sysdev/fsl_rio.c:188): No description found for parameter 'mport'
      Warning(linux-2.6.25-git16//arch/powerpc/sysdev/fsl_rio.c:224): No description found for parameter 'mport'
      Warning(linux-2.6.25-git16//arch/powerpc/sysdev/fsl_rio.c:245): No description found for parameter 'mport'
      Warning(linux-2.6.25-git16//arch/powerpc/sysdev/fsl_rio.c:270): No description found for parameter 'mport'
      Warning(linux-2.6.25-git16//arch/powerpc/sysdev/fsl_rio.c:311): No description found for parameter 'mport'
      Warning(linux-2.6.25-git16//arch/powerpc/sysdev/fsl_rio.c:996): No description found for parameter 'dev'
      Signed-off-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
      Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      9941d945
  15. 30 Apr, 2008 1 commit
  16. 29 Apr, 2008 3 commits
  17. 11 Feb, 2007 1 commit
  18. 26 Apr, 2006 1 commit