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path: root/drivers/rapidio/rio.c
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2012-05-31rapidio: add DMA engine support for RIO data transfersAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Dan Williams <dan.j.williams@intel.com> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Cc: Li Yang <leoli@freescale.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-14RapidIO/mpc85xx: fix possible mport registration problemsAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23rapidio: remove mport resource reservation from common RIO codeAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23rapidio: modify mport ID assignmentAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23rapidio: modify subsystem and driver initialization sequenceAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23rapidio: add architecture specific callbacksAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13rapidio: add definitions of Component Tag fieldsAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13rapidio: use common destid storage for endpoints and switchesAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12rapidio: use resource_size()Dan Carpenter
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 <error27@gmail.com> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Acked-by: Li Yang <leoli@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27rapidio: fix IDLE2 bits corruptionAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27rapidio: add handling of redundant routesAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27rapidio: add device access check into the enumerationAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27rapidio: add handling of orphan port-write messageAlexandre Bounine
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 <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-10-27rapidio: add default handler for error-stopped stateAlexandre Bounine
The default error-stopped state handler provides recovery mechanism as defined by RIO specification. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-06-16fix typos concerning "associate"Uwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-05-30rapidio: fix new kernel-doc warningsRandy Dunlap
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 <randy.dunlap@oracle.com> Cc: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27rapidio: fix typos and minor editsAlexandre Bounine
Signed-off-by: Alexandre 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: Thomas Moll <thomas.moll@sysgo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27rapidio: add Port-Write handling for EMAlexandre Bounine
Add RapidIO Port-Write message handling in the context of Error Management Extensions Specification Rev.1.3. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Tested-by: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-27rapidio: add IDT CPS/TSI switchesAlexandre Bounine
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 <alexandre.bounine@idt.com> Tested-by: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-30rapidio section noiseAl Viro
functions calling devinit and called only from devinit Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29[RAPIDIO] Auto-probe the RapidIO system sizeZhang Wei
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 <wei.zhang@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-01-23[RAPIDIO] Fix compile error and warningKumar Gala
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 <galak@kernel.crashing.org>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-01-08[PATCH] fix more missing includesTim Schmielau
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 <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] rapidio: message interface updatesMatt Porter
Updates the RIO messaging interface to pass a device instance into the event registeration and callbacks. Signed-off-by: Matt Porter <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-07[PATCH] RapidIO support: core baseMatt Porter
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.org The 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 <mporter@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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