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authorAlexandre Bounine <alexandre.bounine@idt.com>2014-04-07 15:38:56 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-07 16:36:07 -0700
commit2aaf308b95b24649a6dcfed89cd956e972089b2a (patch)
treea8fdaea74d50c4a38633bd7aafdc8a98723b1628 /drivers/rapidio/rio.h
parent40f847baf50debfd42ad66f862bfcfea069ffbe7 (diff)
downloadop-kernel-dev-2aaf308b95b24649a6dcfed89cd956e972089b2a.zip
op-kernel-dev-2aaf308b95b24649a6dcfed89cd956e972089b2a.tar.gz
rapidio: rework device hierarchy and introduce mport class of devices
This patch removes an artificial RapidIO bus root device and establishes actual device hierarchy by providing reference to real parent devices. It also introduces device class for RapidIO controller devices (on-chip or an eternal bridge, known as "mport"). Existing implementation was sufficient for SoC-based platforms that have a single RapidIO controller. With introduction of devices using multiple RapidIO controllers and PCIe-to-RapidIO bridges the old scheme is very limiting or does not work at all. The implemented changes allow to properly reference platform's local RapidIO mport devices and provide device details needed for upper layers. This change to RapidIO device hierarchy does not break any known existing kernel or user space interfaces. 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: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Stef van Os <stef.van.os@prodrive-technologies.com> Cc: Jerry Jacobs <jerry.jacobs@prodrive-technologies.com> Cc: Arno Tiemersma <arno.tiemersma@prodrive-technologies.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/rio.h')
-rw-r--r--drivers/rapidio/rio.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h
index 5f99d22..2d0550e 100644
--- a/drivers/rapidio/rio.h
+++ b/drivers/rapidio/rio.h
@@ -50,6 +50,7 @@ extern int rio_mport_scan(int mport_id);
/* Structures internal to the RIO core code */
extern const struct attribute_group *rio_dev_groups[];
extern const struct attribute_group *rio_bus_groups[];
+extern const struct attribute_group *rio_mport_groups[];
#define RIO_GET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
#define RIO_SET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x000000ff) << 16))
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