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author | Alexandre Bounine <alexandre.bounine@idt.com> | 2016-03-22 14:26:17 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-22 15:36:02 -0700 |
commit | e6b585ca6e81badeb3d42db3cc408174f2826034 (patch) | |
tree | 3f76dedb40343d0aab5f7ea26b1a1e0de306a051 /drivers/rapidio/rio.c | |
parent | b74ec56e8ae8759d83448528bde587d00908b4a9 (diff) | |
download | linux-e6b585ca6e81badeb3d42db3cc408174f2826034.tar.bz2 |
rapidio: move net allocation into core code
Make net allocation/release routines available to all components of
RapidIO subsystem by moving code from rio-scan enumerator.
Make destination ID allocation method private to existing enumerator
because other enumeration methods can use their own algorithm.
Setup net device object as a parent of all RapidIO devices residing in
it and register net as a child of active mport device.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/rio.c')
-rw-r--r-- | drivers/rapidio/rio.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index 0be86f4eea5d..5fd68cb4b610 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -42,6 +42,7 @@ MODULE_PARM_DESC(hdid, "Destination ID assignment to local RapidIO controllers"); static LIST_HEAD(rio_devices); +static LIST_HEAD(rio_nets); static DEFINE_SPINLOCK(rio_global_list_lock); static LIST_HEAD(rio_mports); @@ -85,6 +86,58 @@ int rio_query_mport(struct rio_mport *port, EXPORT_SYMBOL(rio_query_mport); /** + * rio_alloc_net- Allocate and initialize a new RIO network data structure + * @mport: Master port associated with the RIO network + * + * Allocates a RIO network structure, initializes per-network + * list heads, and adds the associated master port to the + * network list of associated master ports. Returns a + * RIO network pointer on success or %NULL on failure. + */ +struct rio_net *rio_alloc_net(struct rio_mport *mport) +{ + struct rio_net *net; + + net = kzalloc(sizeof(struct rio_net), GFP_KERNEL); + if (net) { + INIT_LIST_HEAD(&net->node); + INIT_LIST_HEAD(&net->devices); + INIT_LIST_HEAD(&net->switches); + INIT_LIST_HEAD(&net->mports); + mport->net = net; + } + return net; +} +EXPORT_SYMBOL_GPL(rio_alloc_net); + +int rio_add_net(struct rio_net *net) +{ + int err; + + err = device_register(&net->dev); + if (err) + return err; + spin_lock(&rio_global_list_lock); + list_add_tail(&net->node, &rio_nets); + spin_unlock(&rio_global_list_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(rio_add_net); + +void rio_free_net(struct rio_net *net) +{ + spin_lock(&rio_global_list_lock); + if (!list_empty(&net->node)) + list_del(&net->node); + spin_unlock(&rio_global_list_lock); + if (net->release) + net->release(net); + device_unregister(&net->dev); +} +EXPORT_SYMBOL_GPL(rio_free_net); + +/** * rio_add_device- Adds a RIO device to the device model * @rdev: RIO device * |