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Pull rpmsg updates from Bjorn Andersson:
"This introduces the Qualcomm GLINK protocol driver and
DeviceTree-based modalias support, as well as a number of smaller
fixes"
* tag 'rpmsg-v4.13' of git://github.com/andersson/remoteproc:
rpmsg: Make modalias work for DeviceTree based devices
rpmsg: Drop VIRTUALIZATION dependency from RPMSG_VIRTIO
rpmsg: Don't overwrite release op of rpdev
rpmsg: virtio_rpmsg_bus: cleanup multiple assignment to ops
rpmsg: virtio_rpmsg_bus: fix nameservice address
rpmsg: cleanup incorrect function in dev_err message
rpmsg: virtio_rpmsg_bus: fix announce for devices without endpoint
rpmsg: Introduce Qualcomm RPM glink driver
soc: qcom: Add device tree binding for GLINK RPM
rpmsg: Release rpmsg devices in backends
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Pull networking updates from David Miller:
"Reasonably busy this cycle, but perhaps not as busy as in the 4.12
merge window:
1) Several optimizations for UDP processing under high load from
Paolo Abeni.
2) Support pacing internally in TCP when using the sch_fq packet
scheduler for this is not practical. From Eric Dumazet.
3) Support mutliple filter chains per qdisc, from Jiri Pirko.
4) Move to 1ms TCP timestamp clock, from Eric Dumazet.
5) Add batch dequeueing to vhost_net, from Jason Wang.
6) Flesh out more completely SCTP checksum offload support, from
Davide Caratti.
7) More plumbing of extended netlink ACKs, from David Ahern, Pablo
Neira Ayuso, and Matthias Schiffer.
8) Add devlink support to nfp driver, from Simon Horman.
9) Add RTM_F_FIB_MATCH flag to RTM_GETROUTE queries, from Roopa
Prabhu.
10) Add stack depth tracking to BPF verifier and use this information
in the various eBPF JITs. From Alexei Starovoitov.
11) Support XDP on qed device VFs, from Yuval Mintz.
12) Introduce BPF PROG ID for better introspection of installed BPF
programs. From Martin KaFai Lau.
13) Add bpf_set_hash helper for TC bpf programs, from Daniel Borkmann.
14) For loads, allow narrower accesses in bpf verifier checking, from
Yonghong Song.
15) Support MIPS in the BPF selftests and samples infrastructure, the
MIPS eBPF JIT will be merged in via the MIPS GIT tree. From David
Daney.
16) Support kernel based TLS, from Dave Watson and others.
17) Remove completely DST garbage collection, from Wei Wang.
18) Allow installing TCP MD5 rules using prefixes, from Ivan
Delalande.
19) Add XDP support to Intel i40e driver, from Björn Töpel
20) Add support for TC flower offload in nfp driver, from Simon
Horman, Pieter Jansen van Vuuren, Benjamin LaHaise, Jakub
Kicinski, and Bert van Leeuwen.
21) IPSEC offloading support in mlx5, from Ilan Tayari.
22) Add HW PTP support to macb driver, from Rafal Ozieblo.
23) Networking refcount_t conversions, From Elena Reshetova.
24) Add sock_ops support to BPF, from Lawrence Brako. This is useful
for tuning the TCP sockopt settings of a group of applications,
currently via CGROUPs"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1899 commits)
net: phy: dp83867: add workaround for incorrect RX_CTRL pin strap
dt-bindings: phy: dp83867: provide a workaround for incorrect RX_CTRL pin strap
cxgb4: Support for get_ts_info ethtool method
cxgb4: Add PTP Hardware Clock (PHC) support
cxgb4: time stamping interface for PTP
nfp: default to chained metadata prepend format
nfp: remove legacy MAC address lookup
nfp: improve order of interfaces in breakout mode
net: macb: remove extraneous return when MACB_EXT_DESC is defined
bpf: add missing break in for the TCP_BPF_SNDCWND_CLAMP case
bpf: fix return in load_bpf_file
mpls: fix rtm policy in mpls_getroute
net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t
net, ax25: convert ax25_route.refcount from atomic_t to refcount_t
net, ax25: convert ax25_uid_assoc.refcount from atomic_t to refcount_t
net, sctp: convert sctp_ep_common.refcnt from atomic_t to refcount_t
net, sctp: convert sctp_transport.refcnt from atomic_t to refcount_t
net, sctp: convert sctp_chunk.refcnt from atomic_t to refcount_t
net, sctp: convert sctp_datamsg.refcnt from atomic_t to refcount_t
net, sctp: convert sctp_auth_bytes.refcnt from atomic_t to refcount_t
...
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When rpmsg devices are expected to be matched based on their compatible
the modalias should reflect this, so that module autoloading has a
chance to match and load the appropriate module.
Tested-by: Rob Clark <robdclark@gmail.com>
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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A dependency to VIRTUALIZATION has been added to RPMSG_VIRTIO (back
when it was named RPMSG) in v3.10 kernel in commit 397944df3290
("rpmsg: fix kconfig dependencies for VIRTIO") to resolve Kconfig
warnings due to the inclusion of the virtio configuration file from
the ARM's KVM config file. The KVM config was fixed properly in the
subsequent release in commit 8bd4ffd6b3a9 ("ARM: kvm: don't include
drivers/virtio/Kconfig"). So, drop this unneeded VIRTUALIZATION
dependency from RPMSG_VIRTIO.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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b0b03b811963 ("rpmsg: Release rpmsg devices in backends") attempted to
correct the ownership of freeing rpmsg device memory. But the patch
is not complete, in that the rpmsg core will overwrite the release op as
the device is being registered.
Fixes: b0b03b811963 ("rpmsg: Release rpmsg devices in backends")
Reported-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Trivial cleanup: the .ops pointer is assigned twice. This patch removes the
first assignment.
Acked-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Commit 2a48d7322dc8 ("rpmsg: rpmsg_send() operations takes rpmsg_endpoint")
only changed the nameservice address for virtio_rpmsg_announce_create() but
did not do the same change for virtio_rpmsg_announce_destroy().
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Trivial cleanup for incorrect function in dev_err message
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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A device might not have an endpoint assigned. This patch checks if
rpdev->ept has a value before dereferencing or using it.
Signed-off-by: Henri Roosen <henri.roosen@ginzinger.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
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-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
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-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
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-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
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-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The dev_attrs field has long been "depreciated" and is finally being
removed, so move the driver to use the "correct" dev_groups field
instead for struct bus_type.
Cc: Ohad Ben-Cohen <ohad@wizery.com>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: <linux-remoteproc@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This introduces a basic driver for communicating over "native glink"
with the RPM found in Qualcomm platforms.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The rpmsg devices are allocated in the backends and as such must be
freed there as well.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Pull virtio updates from Michael Tsirkin:
"Fixes, cleanups, performance
A bunch of changes to virtio, most affecting virtio net. Also ptr_ring
batched zeroing - first of batching enhancements that seems ready."
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
s390/virtio: change maintainership
tools/virtio: fix spelling mistake: "wakeus" -> "wakeups"
virtio_net: tidy a couple debug statements
ptr_ring: support testing different batching sizes
ringtest: support test specific parameters
ptr_ring: batch ring zeroing
virtio: virtio_driver doc
virtio_net: don't reset twice on XDP on/off
virtio_net: fix support for small rings
virtio_net: reduce alignment for buffers
virtio_net: rework mergeable buffer handling
virtio_net: allow specifying context for rx
virtio: allow extra context per descriptor
tools/virtio: fix build breakage
virtio: add context flag to find vqs
virtio: wrap find_vqs
ringtest: fix an assert statement
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We are going to add more parameters to find_vqs, let's wrap the call so
we don't need to tweak all drivers every time.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Remove the standalone SMD implementation as we have transitioned the
client drivers to use the RPMSG based one.
Also remove all dependencies on QCOM_SMD from Kconfig files, in order to
keep them selectable in the absence of the removed symbol.
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull vhost updates from Michael Tsirkin:
"virtio, vhost: optimizations, fixes
Looks like a quiet cycle for vhost/virtio, just a couple of minor
tweaks. Most notable is automatic interrupt affinity for blk and scsi.
Hopefully other devices are not far behind"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio-console: avoid DMA from stack
vhost: introduce O(1) vq metadata cache
virtio_scsi: use virtio IRQ affinity
virtio_blk: use virtio IRQ affinity
blk-mq: provide a default queue mapping for virtio device
virtio: provide a method to get the IRQ affinity mask for a virtqueue
virtio: allow drivers to request IRQ affinity when creating VQs
virtio_pci: simplify MSI-X setup
virtio_pci: don't duplicate the msix_enable flag in struct pci_dev
virtio_pci: use shared interrupts for virtqueues
virtio_pci: remove struct virtio_pci_vq_info
vhost: try avoiding avail index access when getting descriptor
virtio_mmio: expose header to userspace
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Add a struct irq_affinity pointer to the find_vqs methods, which if set
is used to tell the PCI layer to create the MSI-X vectors for our I/O
virtqueues with the proper affinity from the start. Compared to after
the fact affinity hints this gives us an instantly working setup and
allows to allocate the irq descritors node-local and avoid interconnect
traffic. Last but not least this will allow blk-mq queues are created
based on the interrupt affinity for storage drivers.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The parameter validation incorrectly returned an ERR_PTR(), which is not
handled by the callers to rpmsg_create_ept(), per the definition NULL
should be returned.
Fixes: 93e9324431c9 ("rpmsg: Handle invalid parameters in public API")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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We should unlock before returning if skb_dequeue() returns a NULL.
Fixes: c0cdc19f84a4 ("rpmsg: Driver for user space endpoint interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Without CONFIG_NET, we get a build failure for the new driver:
ERROR: "skb_queue_tail" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "skb_put" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "__alloc_skb" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "kfree_skb" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "skb_dequeue" [drivers/rpmsg/rpmsg_char.ko] undefined!
This adds a dependency so we don't try to build the broken configuration.
Fixes: c0cdc19f84a4 ("rpmsg: Driver for user space endpoint interface")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Create and register a rpmsg device for use with the rpmsg user space
interface, allowing user space to access SMD channels.
Also provide the "rpmsg_name" device attribute to expose the edge name
in sysfs, allowing the user to write udev rules for specific rpmsg
devices and their children.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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This driver allows rpmsg instances to expose access to rpmsg endpoints
to user space processes. It provides a control interface, allowing
userspace to export endpoints and an endpoint interface for each exposed
endpoint.
The implementation is based on prior art by Texas Instrument, Google,
PetaLogix and was derived from a FreeRTOS performance statistics driver
written by Michal Simek.
The control interface provides a "create endpoint" ioctl, which is fed a
name, source and destination address. The three values are used to
create the endpoint, in a backend-specific way, and a rpmsg endpoint
device is created - with the three parameters are available in sysfs for
udev usage.
E.g. to create an endpoint device for one of the Qualcomm SMD channel
related to DIAG one would issue:
struct rpmsg_endpoint_info info = { "DIAG_CNTL", 0, 0 };
int fd = open("/dev/rpmsg_ctrl0", O_RDWR);
ioctl(fd, RPMSG_CREATE_EPT_IOCTL, &info);
Each created endpoint device shows up as an individual character device
in /dev, allowing permission to be controlled on a per-endpoint basis.
The rpmsg endpoint will be created and destroyed following the opening
and closing of the endpoint device, allowing rpmsg backends to open and
close the physical channel, if supported by the wire protocol.
Cc: Marek Novak <marek.novak@nxp.com>
Cc: Matteo Sartori <matteo.sartori@t3lab.it>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Add support for polling the status of the write buffer so that user
space can use rpmsg character devices in non-blocking mode.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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This allows rpmsg backends to implement polling of the outgoing buffer,
which provides poll support to user space when using the rpmsg character
device.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Add support for the "label" property, used to give the edge a name other
than the one of the DT node. This allows the implementor to provide
consistently named edges when using the rpmsg character device.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Since commit 4dffed5b3ac796b ("rpmsg: Name rpmsg devices based on
channel id"), it is no more possible for a firmware to register twice
a service (on different endpoints). rpmsg_register_device function
is failing when calling device_add for the second time as second
device has the same name as first one already register.
It is because name is based only on service name and so is not more
unique. Previously name was unique thanks to the use of rpmsg_dev_index.
This patch adds destination and source endpoint numbers device name to
create an unique identifier.
Fixes: 4dffed5b3ac7 ("rpmsg: Name rpmsg devices based on channel id")
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Loic Pallardy <loic.pallardy@st.com>
[bjorn: flipped name and address in device name]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Pull rpmsg updates from Bjorn Andersson:
"Argument validation in public functions, function stubs for
COMPILE_TEST-ing clients, preparation for exposing rpmsg endponts
to user space and minor Qualcomm SMD fixes"
* tag 'rpmsg-v4.10' of git://github.com/andersson/remoteproc:
dt-binding: soc: qcom: smd: Add label property
rpmsg: qcom_smd: Correct return value for O_NONBLOCK
rpmsg: Provide function stubs for API
rpmsg: Handle invalid parameters in public API
rpmsg: Support drivers without primary endpoint
rpmsg: Introduce a driver override mechanism
rpmsg: smd: Reduce restrictions when finding channel
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qcom_smd_send() should return -EAGAIN for non-blocking channels with
insufficient space, so that we can propagate this event to user space.
Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The edge registration functions is to be used from a remoteproc driver
to register and unregister an edge as the remote processor comes and
goes.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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There are two cases of possible uninitialized pointer usage in the API,
either the parameters themselves are invalid or we're trying to jump to
functions not required to be implemented by all backends.
Suggested-by: Loic Pallardy <loic.pallardy@st.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Some types of rpmsg drivers does not have a primary endpoint to tie
their existence upon, but wishes to create and destroy endpoints
dynamically, e.g. based on user interactions.
Allow rpmsg drivers to omit a driver callback to signal this case and
make the probe path not create a primary endpoint in this case.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Similar to other subsystems it's useful to provide a mechanism to force
a specific driver match on a device, so introduce this.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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SMD channels are created by the remotes in "opening" state, but
sometimes as we close and try to reopen them they linger in closing
state.
Following the search for a matching channel the create_ept() will verify
that the channel is in a suitable state, so we can lax the restrictions
of the search function to work around above difference in behaviour.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The ARM allmodconfig build broke with the addition of the SMD rpmsg
driver that conflicts with the driver its replaces:
WARNING: drivers/soc/qcom/smd: 'qcom_smd_register_edge' exported twice. Previous export was in drivers/rpmsg/qcom_smd.ko
WARNING: drivers/soc/qcom/smd: 'qcom_smd_unregister_edge' exported twice. Previous export was in drivers/rpmsg/qcom_smd.ko
There is already a dependency that is meant to avoid the broken
configuration, but that only prevents the case where at least
one of the two are built-in, but not if both are modules.
This changes the dependency to "=n", to ensure that the new driver
can only be enabled if the other one is completely disabled.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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This introduces a new rpmsg backend for the Qualcomm SMD system,
allowing communication with various remote processors found in Qualcomm
platforms. The implementation is based on, and intends to replace,
drivers/soc/qcom/smd.c with the necessary adaptions for fitting with the
rpmsg core.
Based on original work by Sricharan R <sricharan@codeaurora.org>
Cc: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Some rpmsg backends support holding on to and redelivering messages upon
failed handling of them, so provide a way for the callback to report and
error and allow the backends to handle this.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Move virtio rpmsg implementation details from the public header file to
the virtio rpmsg implementation.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Create a container struct virtio_rpmsg_channel around the rpmsg_channel
to keep virtio backend information separate from the rpmsg and public
API. This makes the public structures independant of virtio.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Move the device and endpoint indirection tables to the rpmsg internal
header file, to hide them from the public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Extract the generic rpmsg core functionality from the virtio rpmsg
implementation, splitting the implementation in a rpmsg core and a
virtio backend.
Based on initial work by Sricharan R <sricharan@codeaurora.org>
Cc: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The tail of create_channel() is common among all rpmsg backends, so
split it off from the virtio specific part to allow it to be extracted
to the rpmsg core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Extract and move the helper function for finding rpmsg child devices to
the core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Move the rpmsg_send() and rpmsg_destroy_ept() interface to the rpmsg
core, so that we eventually can hide the rpmsg_endpoint ops from the
public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Add indirection table for rpmsg_endpoint related operations and move
virtio implementation behind this, this finishes of the decoupling of
the virtio implementation from the public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Extract the now indirect rpmsg_create_ept() interface to a separate
file and start building up a rpmsg core.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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To allow for multiple backend implementations add an indireection table
for rpmsg_device related operations and move the virtio implementation
behind this table.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The rpmsg device representing struct is called rpmsg_channel and the
variable name used throughout is rpdev, with the communication happening
on endpoints it's clearer to just call this a "device" in a public API.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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As we introduce support for additional rpmsg backends, some of these
only supports point-to-point "links" represented by a name. By making
rpmsg_create_ept() take a channel_info struct we allow for these
backends to either be passed a source address, a destination address or
a name identifier.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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The rpmsg_send() operations has been taking a rpmsg_device, but this
forces users of secondary rpmsg_endpoints to use the rpmsg_sendto()
interface - by extracting source and destination from the given data
structures. If we instead pass the rpmsg_endpoint to these functions a
service can use rpmsg_sendto() to respond to messages, even on secondary
endpoints.
In addition this would allow us to support operations on multiple
channels in future backends that does not support off-channel
operations.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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