linux-dev/Documentation/rapidio, branch master

docs: rapidio: add it to the driver API

2019-07-15T12:20:27Z

This is actually a subsystem description, with contains both kAPI and uAPI. While it should ideally be slplit, let's place it at driver-api, as most things are related to kAPI and driver-specific info. Signed-off-by: Mauro Carvalho Chehab

docs: rapidio: convert to ReST

2019-07-15T12:20:26Z

Rename the rapidio documentation files to ReST, add an index for them and adjust in order to produce a nice html output via the Sphinx build system. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab

Documentation: rapidio: move sysfs interface to ABI

2018-02-23T15:25:45Z

Right now, the description of the rapidio sysfs interfaces is in Documentation/rapidio/sysfs.txt. Since these are a part of the ABI, they should be in Documentation/ABI along with the rest. Signed-off-by: Aishwarya Pant Acked-by: Alexandre Bounine Signed-off-by: Jonathan Corbet

rapidio/documentation/mport_cdev: add missing parameter description

2016-09-02T00:52:02Z

Add missing description for rio_mport_cdev driver parameter 'dma_timeout'. This patch is applicable to kernel versions starting from v4.6. Link: http://lkml.kernel.org/r/20160901173104.2928-1-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio/tsi721: add messaging mbox selector parameter

2016-08-02T23:35:34Z

Add module parameter to allow load time configuration of available RapidIO messaging mailboxes (MBOX1 - MBOX4). Having a messaging MBOX selector mask allows to define which MBOXes are controlled by the mport device driver and reserve some of them for direct use by other drivers. Link: http://lkml.kernel.org/r/1469125134-16523-7-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Tested-by: Barry Wood Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio/tsi721: add PCIe MRRS override parameter

2016-08-02T23:35:34Z

Add PCIe Maximum Read Request Size (MRRS) adjustment parameter to allow users to override configuration register value set during PCIe bus initialization. Performance of Tsi721 device as PCIe bus master can be improved if MRRS is set to its maximum value (4096 bytes). Some platforms have limitations for supported MRRS and therefore the default value should be preserved, unless it is known that given platform supports full set of MRRS values defined by PCI Express specification. Link: http://lkml.kernel.org/r/1469125134-16523-6-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio/tsi721_dma: add channel mask and queue size parameters

2016-08-02T23:35:33Z

Add module parameters to allow load time configuration of DMA channels. Depending on application, performance of DMA data transfers can benefit from adjusted sizes of buffer descriptor ring and/or transaction requests queue. Having HW DMA channel selector mask allows to define which channels (from seven available) are controlled by the mport device driver and reserve some of them for direct use by other drivers. Link: http://lkml.kernel.org/r/1469125134-16523-5-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Tested-by: Barry Wood Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio/documentation: fix mangled paragraph in mport_cdev

2016-08-02T23:35:32Z

Minor edits to correct parameter description. This patch is applicable to kernel versions starting from v4.6. Link: http://lkml.kernel.org/r/1469125134-16523-3-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Reported-by: Barry Wood Cc: Matt Porter Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio: add RapidIO channelized messaging driver

2016-08-02T23:35:31Z

Add channelized messaging driver to support native RapidIO messaging exchange between multiple senders/recipients on devices that use kernel RapidIO subsystem services. This device driver is the result of collaboration within the RapidIO.org Software Task Group (STG) between Texas Instruments, Prodrive Technologies, Nokia Networks, BAE and IDT. Additional input was received from other members of RapidIO.org. The objective was to create a character mode driver interface which exposes messaging capabilities of RapidIO endpoint devices (mports) directly to applications, in a manner that allows the numerous and varied RapidIO implementations to interoperate. This char mode device driver allows user-space applications to setup messaging communication channels using single shared RapidIO messaging mailbox. By default this driver uses RapidIO MBOX_1 (MBOX_0 is reserved for use by RIONET Ethernet emulation driver). [weiyj.lk@gmail.com: rapidio/rio_cm: fix return value check in riocm_init()] Link: http://lkml.kernel.org/r/1469198221-21970-1-git-send-email-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1468952862-18056-1-git-send-email-alexandre.bounine@idt.com Signed-off-by: Alexandre Bounine Tested-by: Barry Wood Cc: Matt Porter Cc: Aurelien Jacquiot Cc: Andre van Herk Cc: Barry Wood Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rapidio: add mport char device driver

2016-03-22T22:36:02Z

Add mport character device driver to provide user space interface to basic RapidIO subsystem operations. See included Documentation/rapidio/mport_cdev.txt for more details. [akpm@linux-foundation.org: fix printk warning on i386] [dan.carpenter@oracle.com: mport_cdev: fix some error codes] Signed-off-by: Alexandre Bounine Signed-off-by: Dan Carpenter Tested-by: Barry Wood Cc: Matt Porter Cc: Aurelien Jacquiot Cc: Andre van Herk Cc: Barry Wood Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds