user/sven/linux.git/include/linux/rio.h, branch v3.10.93

rapidio: add enumeration/discovery start from user space

2013-05-24T23:22:50Z

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

rapidio: make enumeration/discovery configurable

2013-05-24T23:22:50Z

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

rapidio: fix kernel-doc warnings

2012-11-16T22:33:04Z

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

rapidio: fix comment

2012-10-10T23:50:16Z

The resource index for the mailboxes was incorrect. Signed-off-by: Chad Reese Acked-by: Alexandre Bounine Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio: update for destination ID allocation

2012-10-10T23:50:15Z

Address comments provided by Andrew Morton: https://lkml.org/lkml/2012/10/3/550 - Keeps consistent kerneldoc compatible comments style for new static functions. - Removes unnecessary complexity from destination ID allocation routine. - Uses kcalloc() for code clarity. Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Li Yang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio: add destination ID allocation mechanism

2012-10-05T18:05:23Z

Replace the single global destination ID counter with per-net allocation mechanism to allow independent destID management for each available RapidIO network. Using bitmap based mechanism instead of counters allows destination ID release and reuse in systems that support hot-swap. Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Li Yang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio: use device lists handling on per-net basis

2012-10-05T18:05:22Z

Modify handling of device lists to resolve issues caused by using single global list of RIO devices during enumeration/discovery. The most common sign of existing issue is incorrect contents of switch routing tables in systems with multiple mport controllers while single-port configuration performs as expected. Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Li Yang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio: add inbound memory mapping interface

2012-10-05T18:05:21Z

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

rapidio: fix kerneldoc warnings after DMA support was added

2012-10-05T18:05:20Z

Signed-off-by: Alexandre Bounine Reported-by: Robert P. J. Day Cc: Robert P. J. Day Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio/tsi721: modify mport name assignment

2012-10-05T18:05:20Z

Modify RapidIO mport device name assignment to include device name of PCIe side of Tsi721 bridge. The new name format is intended to provide definitive reference between RapidIO and PCIe sides of the bridge in systems with multiple Tsi721 bridges. Signed-off-by: Alexandre Bounine Cc: Matt Porter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds