linux-toradex.git/include/linux/rio.h, branch v2.6.38.8

rapidio: add definitions of Component Tag fields

2011-01-13T16:03:18+00:00

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

rapidio: integrate rio_switch into rio_dev

2011-01-13T16:03:17+00:00

Convert RIO switches device structures (rio_dev + rio_switch) into a
single allocation unit.

This change is based on the fact that RIO switches are using common RIO
device objects anyway.  Allocating RIO switch objects as RIO devices with
added space for switch information simplifies handling of RIO switch
devices.

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

rapidio: use common destid storage for endpoints and switches

2011-01-13T16:03:17+00:00

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

rapidio: add handling of redundant routes

2010-10-28T01:03:16+00:00

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

rapidio: modify sysfs initialization for switches

2010-10-28T01:03:15+00:00

1. Change to create attribute "routes" only for switches.

2. Add a switch-specific callback to create/remove proprietary attributes.

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

rapidio: add relation links between RIO device structures

2010-10-28T01:03:15+00:00

Create back and forward links between RIO devices.  These links are
intended for use by error management and hot-plug extensions.  Links for
redundant RIO connections between switches are not set (will be fixed in a
separate patch).

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

rapidio: use stored ingress port number instead of register read

2010-10-28T01:03:15+00:00

The switch port information is obtained and stored during RIO device
setup.  Therefore repeated reads from Switch Port Information CAR may be
removed.

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

rapidio: fix RapidIO sysfs hierarchy

2010-10-28T01:03:15+00:00

This set of RapidIO patches extends support for standard error recovery
mechanism and adds new IDT Gen2 sRIO switch devices - CPS-1848 and
CPS-1616.  Implementation of the standard error-stopped state recovery
mechanism (as defined by the RapidIO specification) is required for the
new switches.

Version 2 of this set of patches addresses received comments and fixes an
error notification setup issue found in the idt_gen2.c after the first
version was released.

This patch:

Make RapidIO devices appear in /sys/devices/rapidio directory instead of
top of /sys/devices directory.

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

rapidio: fix new kernel-doc warnings

2010-05-30T16:02:47+00:00

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

rapidio: add switch domain routines

2010-05-27T16:12:51+00:00

Add switch specific domain routines required for 16-bit routing support in
switches with hierarchical implementation of routing tables.

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