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Viresh Kumar [Tue, 11 Aug 2015 02:06:10 +0000 (07:36 +0530)]
greybus: spi: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:09 +0000 (07:36 +0530)]
greybus: sdio: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:08 +0000 (07:36 +0530)]
greybus: raw: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:07 +0000 (07:36 +0530)]
greybus: pwm: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:06 +0000 (07:36 +0530)]
greybus: loopback: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:05 +0000 (07:36 +0530)]
greybus: i2c: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:04 +0000 (07:36 +0530)]
greybus: hid: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:03 +0000 (07:36 +0530)]
greybus: gpio: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:02 +0000 (07:36 +0530)]
greybus: control: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:01 +0000 (07:36 +0530)]
greybus: battery: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:06:00 +0000 (07:36 +0530)]
greybus: audio: Drop get_version support
This is done from a common place now, no need to replicate it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:05:59 +0000 (07:35 +0530)]
greybus: connection: request protocol version before initializing connection
This can (should) be done from a common place as its required for most
of the protocols. Do it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:05:58 +0000 (07:35 +0530)]
greybus: connection: Save major/minor supported by module
Save major/minor number supported by the module inside connection
structure, as this can be used later.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:05:57 +0000 (07:35 +0530)]
greybus: define greybus wide protocol request numbers
Some request numbers (like invalid and get_version) are same across all
protocols. Create common macros for them.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 02:05:56 +0000 (07:35 +0530)]
greybus: connection: disconnect connection on failures during initialization
Its possible for connection_init() to fail, in such cases the
disconnected event must be sent to the module.
It is missing currently, fix it.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 01:59:19 +0000 (07:29 +0530)]
greybus: svc: error out only for smaller payloads received
!= was used in place of <, while comparing expected and actual payload
size. The module may be running a higher version of the protocol and
might have some extra fields (towards the end) in the structure, and the
AP needs to ignore them.
This also updates the print (expected-payload-size <
actual-payload-size), when the size doesn't match for requests received
by the module. This gives more details required for debugging.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 11 Aug 2015 01:59:18 +0000 (07:29 +0530)]
greybus: audio: Add '<' to the print message for short messages
This increases readability a bit more, as it tells which value is actual
size and which one is expected size.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 7 Aug 2015 12:36:43 +0000 (18:06 +0530)]
greybus: svc: Remove FIXME for firmware download
Its handled by the firmware driver now, drop the FIXME comment from svc
code.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:41 +0000 (10:25 +0530)]
greybus: vibrator: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:40 +0000 (10:25 +0530)]
greybus: usb: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:39 +0000 (10:25 +0530)]
greybus: uart: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:38 +0000 (10:25 +0530)]
greybus: spi: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:37 +0000 (10:25 +0530)]
greybus: pwm: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:36 +0000 (10:25 +0530)]
greybus: i2c: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:35 +0000 (10:25 +0530)]
greybus: hid: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:34 +0000 (10:25 +0530)]
greybus: gpio: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:33 +0000 (10:25 +0530)]
greybus: battery: Use (already defined) major/minor macros
We already have macros for these, use them instead of writing fixed
values.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 04:55:32 +0000 (10:25 +0530)]
greybus: hid: spell fix (s/infomation/information)
Minor spell fix.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 8 Aug 2015 02:39:32 +0000 (08:09 +0530)]
greybus: sdio: error out only for smaller payloads received
!= was used in place of <, while comparing expected and actual payload
size. The module may be running a higher version of the protocol and
might have some extra fields (towards the end) in the structure, and the
AP needs to ignore them.
This also updates the print (expected-payload-size <
actual-payload-size), when the size doesn't match for requests received
by the module. This gives more details required for debugging.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Thu, 6 Aug 2015 07:14:51 +0000 (12:44 +0530)]
greybus: gpio: Print expected/actual payload size on mismatch
Print (expected-payload-size actual-payload-size), when the size doesn't
match for requests received by the module. This gives more details
required for debugging the issue.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Thu, 6 Aug 2015 07:14:52 +0000 (12:44 +0530)]
greybus: raw: Print expected/actual payload size on mismatch
Print (expected-payload-size actual-payload-size), when the size doesn't
match for requests received by the module. This gives more details
required for debugging the issue.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Tue, 4 Aug 2015 18:44:10 +0000 (13:44 -0500)]
greybus: kernel_ver.h: define U32_MAX and U64_MAX
These were not defined, and I just posted patches that use them.
Signed-off-by: Alex Elder <elder@linaro.org>
Tested-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:20 +0000 (12:57 -0500)]
greybus: loopback: fix connection cleanup paths
The error paths in gb_loopback_connection_init() are kind of screwed
up--not in proper order, and the label naming convention seems a
little inconsistent.
Fix this, ensuring each error cleans up the setup that's been done
up to that point. Use the convention that the label indicates the
first thing that needs to be cleaned up.
Reorder the statements in gb_loopback_connection_exit() to match
the order of cleanup in gb_loopback_connection_init().
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:19 +0000 (12:57 -0500)]
greybus: loopback: compute average stats on demand only
Stop recording and updating the average every time a sample
is recorded. Instead, compute it from the sum and count only
when it's required.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:18 +0000 (12:57 -0500)]
greybus: loopback: use separate attribute macro for average
Define a separate macro for displaying the average of the samples
collected. This will be used so we can calculate the average only
when requested, rather than every time a new value gets recorded.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:17 +0000 (12:57 -0500)]
greybus: loopback: all read-only attributes are unsigned
The only values passed to the gb_loopback_ro_attr() macro are
unsigned 32-bit values. So there's no need to pass a "type"
format specifier.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:16 +0000 (12:57 -0500)]
greybus: loopback: error is an unsigned attribute
The error count is unsigned, so fix the format specifier used in its
attribute definition.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:15 +0000 (12:57 -0500)]
greybus: loopback: use a 32-bit count
The count of statistical samples recorded is currently a 64-bit
value. 32 bits is sufficient, and in fact anything more than
that won't work for the do_div() call it's pass to anyway. So make
the count field be 32 bits.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:14 +0000 (12:57 -0500)]
greybus: loopback: record 32-bit min and max
The minimum and maximum values for stats values are always 32 bits.
Change the type for these fields to reflect this.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:13 +0000 (12:57 -0500)]
greybus: loopback: use u32 for stats update
The only values supplied to gb_loopback_update_stats() are 32-bits,
so change the type of the second argument to reflect that.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:12 +0000 (12:57 -0500)]
greybus: loopback: use U64_MAX for initialization
Use the largest representable value when initializing the "min"
field when resetting loopback statistics.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:11 +0000 (12:57 -0500)]
greybus: loopback: drop unneeded casts for void pointers
There is no need to cast a void pointer to a particular type.
Drop the casts used in this way, mainly in the attribute definition
macros.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:10 +0000 (12:57 -0500)]
greybus: looback: fix two typos
Fix two misspellings. And add spaces around a '%' operator.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Alex Elder [Mon, 3 Aug 2015 17:57:09 +0000 (12:57 -0500)]
greybus: interface: declare gb_interface_destroy()
Add a public declaration for gb_interface_destroy(), matching
gb_interface_create().
It's not yet used outside "interface.c" but I suppose it
could be, and its scope is currently public.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Sat, 1 Aug 2015 09:50:41 +0000 (11:50 +0200)]
greybus: greybus_protocols: use only type attributes for message packing
For consistency reasons, use only type attributes for message packing.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Sat, 1 Aug 2015 09:50:40 +0000 (11:50 +0200)]
greybus: sdio: fix message packing
Add missing packed attributes to prevent implicit structure padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Sat, 1 Aug 2015 09:50:39 +0000 (11:50 +0200)]
greybus: uart: fix message packing
Add missing packed attributes to prevent implicit structure padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Sat, 1 Aug 2015 09:50:38 +0000 (11:50 +0200)]
greybus: svc: fix message packing
Add missing packed attributes to prevent implicit structure padding.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Sat, 1 Aug 2015 09:50:37 +0000 (11:50 +0200)]
greybus: greybus_protocols: fix typo in comment
Fix misspelled variable name in comment.
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Wed, 29 Jul 2015 06:12:54 +0000 (11:42 +0530)]
greybus: operation: Move operation header to greybus_protocols.h
This should be exposed to external users (like gbsim). Move it to
greybus_protocols.h.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Wed, 29 Jul 2015 06:12:53 +0000 (11:42 +0530)]
greybus: operation: Drop alignment attribute from operation message header
The buffers allocated for message header is already 64 bit aligned and
we have explicit pad bytes in the header structure, to 64 bit align the
operation specific data.
And so there is no need to add the aligned attribute to the operation
message header. Drop it.
Suggested-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Reviewed-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 30 Jul 2015 18:30:41 +0000 (20:30 +0200)]
greybus: usb: disable protocol driver
The USB bridged-PHY protocol driver currently depends on changes to USB
core that are not yet upstream.
Disable for now.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 30 Jul 2015 18:30:40 +0000 (20:30 +0200)]
greybus: usb: implement hub_control callback
Implement the hub_control callback.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 30 Jul 2015 18:30:39 +0000 (20:30 +0200)]
greybus: usb: fix hc_driver fields
Fix hc_driver description, product_desc and flags fields.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 30 Jul 2015 18:30:38 +0000 (20:30 +0200)]
greybus: usb: fix hcd allocation, deregistration and deallocation
Fix allocation, deregistration and deallocation of USB HCD, and update
the hcd_priv helper functions.
The HCD private data was not allocated correctly, something which would
lead to a crash when accessed in hcd_start. The HCD was neither
reregistered or deallocated on connection tear down.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 30 Jul 2015 18:30:37 +0000 (20:30 +0200)]
greybus: usb: renumber operation types
Renumber the current operation types.
NOTE: Protocol change.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 30 Jul 2015 18:30:36 +0000 (20:30 +0200)]
greybus: usb: clean up driver
Remove unused, broken or unneeded code and constructs.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Thu, 30 Jul 2015 16:43:27 +0000 (22:13 +0530)]
greybus: connection: remove special check for svc cport id
This is required to get things working for now, after the latest revert
of svc protocol is done.
Currently svc's cport id is set to 2 and that hd cport id will be used
for the third connection we make. And that protocol (which is i2c in one
of the cases), may not work as the (dis)connected event isn't sent for
it.
Fix this by getting rid of svc protocol check from (dis)connected
events for now. This must be reverted later, once svc protocol is
included again.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Mark Greer <mgreer@animalcreek.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Wed, 29 Jul 2015 17:05:09 +0000 (10:05 -0700)]
greybus: svc: revert svc changes to keep things working for a while.
The firmware for the svc changes isn't quite ready, so revert the whole
set of patches in one hunk to get things back to a working state for the
other firmware developers. The svc patches will be added back in a
separate branch.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 28 Jul 2015 17:34:39 +0000 (18:34 +0100)]
greybus: loopback: warn user if kfifo cannot log all data
The depth of the kfifo used to log the latency data for user-space can be
moved upwards or downward by way of a module parameter. The user may still
specify a test set that's larger than the number of kfifo elements we have
available. If the user specifies more iterations than can be logged give a
warning as feedback and continue with the test.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 28 Jul 2015 17:34:38 +0000 (18:34 +0100)]
greybus: loopback: provide interface to read all latency data-points
The current loopback code provides the minimum, maximum and average latency
values for a given test set. It would be highly useful for user-space to
have access to each one of the latency metrics in order to graph outliers.
This patch adds a simple character device interface implmenting a read()
interface that allows user-space to read out the saved latency metrics
which have been stored in a kfifo for this purpose.
A module parameter is provided to allow varying the depth of the kfifo in
order to allow a user to capture potentially large data sets. This version
sets the default depth for the kfifo at 8192 dwords.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 28 Jul 2015 17:34:36 +0000 (18:34 +0100)]
greybus: loopback: make loopback code thread safe
Current code allows a sysfs callback and a kernel worker thread to write
all over and act upon data that could be in the process of being updated by
the other. This patch adds a reasonably coarse mutex to enscure sync
between the two.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 28 Jul 2015 17:34:35 +0000 (18:34 +0100)]
greybus: loopback: remove redundant timestamping
It is of more interest to graphing system performance to base our
timestamps on the time it takes a greybus_operation_sync() to complete.
Higher level timestamping code is less accurate and not relevant to
throughput and latency characterization.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Tue, 28 Jul 2015 01:58:42 +0000 (07:28 +0530)]
greybus: initialize svc connection while creating hd
Its really part of initializing the host device and is required for
every 'hd' that is created. Lets move the call to do basic
initialization of svc connection to greybus_create_hd().
Also add a comment to specify why we need to do it that early.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Mon, 27 Jul 2015 21:23:44 +0000 (14:23 -0700)]
greybus: core: clean up ida memory for host controller
We forgot to free any ida internal structures that were used by this
host controller structure when we free the memory for the controller.
So fix that up by doing so in the release function.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Viresh Kumar [Sat, 25 Jul 2015 04:40:06 +0000 (10:10 +0530)]
greybus: remove svc_msg.h
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Sat, 25 Jul 2015 04:40:05 +0000 (10:10 +0530)]
greybus: es1: create svc connection early enough
The svc connection needs to be ready before creating the URBs, otherwise
the svc version request might come in before the AP was ready to parse
them.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Sat, 25 Jul 2015 00:21:25 +0000 (17:21 -0700)]
greybus: interface: make gb_interface_destroy() static
The function is only called locally, so mark it static to make sparse
happy.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Sat, 25 Jul 2015 00:19:21 +0000 (17:19 -0700)]
greybus: remove submit_svc from the host driver
The callback is never used anymore, so remove it from struct
greybus_host_driver as well as from the es1 and es2 drivers.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Sat, 25 Jul 2015 00:15:59 +0000 (17:15 -0700)]
greybus: greybus.h: remove greybus_svc_in()
The function is gone, remove it from the header file as well.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Perry Hung [Fri, 24 Jul 2015 23:02:34 +0000 (19:02 -0400)]
greybus: svc: add flags and traffic class parameter to connection create op
The AP needs to be able to specify L4 CPort flags and traffic class
parameters on a connection-by-connection basis. Extend the connection
create operation to accept these. Since there's no policy to decide
these, fix them at TC0 with end-to-end-flow control, controlled segment
dropping, and CPort safety valve enabled.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Perry Hung [Fri, 24 Jul 2015 23:02:33 +0000 (19:02 -0400)]
greybus: svc: connection: ask SVC to create connections
Ask the SVC to do all the necessary bits for creating a new connection.
This is skipped for the initial SVC connection.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Perry Hung [Fri, 24 Jul 2015 23:02:32 +0000 (19:02 -0400)]
greybus: svc: create bidirectional routes on hotplug request
Upon receiving a hotplug request, we need to prepare the routing table
to allow packets to flow between the AP interface and the newly detected
interface.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Perry Hung [Fri, 24 Jul 2015 23:02:31 +0000 (19:02 -0400)]
greybus: svc: add route create operation
Implement the SVC Protocol Route Create Operation.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:26 +0000 (15:32 +0530)]
greybus: get rid of old svc-protocol
Its not used anymore as we have more sophisticated svc protocol in
place, lets get rid of earlier code.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Sat, 25 Jul 2015 00:09:48 +0000 (17:09 -0700)]
greybus: es2: remove svc endpoint message handling
We have switched over to use the "new" svc messages, no more need to
have a special USB endpoint to handle them, they come through the normal
CPort messages.
Based on a patch from Viresh.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Fri, 24 Jul 2015 23:47:07 +0000 (16:47 -0700)]
greybus: es1: remove svc endpoint message handling
We have switched over to use the "new" svc messages, no more need to
have a special USB endpoint to handle them, they come through the normal
CPort messages.
Based on a patch from Viresh.
Tested-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:24 +0000 (15:32 +0530)]
greybus: Switch to Cport 0 for svc and control protocol
Initially we fixed it to Cport 2, but its changed to Cport 0 now. Lets
switch that in code as well.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:23 +0000 (15:32 +0530)]
greybus: es1/2: Lets start using svc protocol
All bits and pieces are in place now. Lets start using svc protocol
instead of stuff present in ap.c.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 13:12:03 +0000 (18:42 +0530)]
greybus: connection: compare hd_cport_id for matching SVC protocol
SVC protocol isn't per interface, but per entire entire endo. And so svc
cport id must be matched against hd_cport_id, not per-interface cport
id.
Fixes:
82edfac17e5f ("connection: don't send connected/disconnected events for SVC connection")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Perry Hung [Fri, 24 Jul 2015 23:02:30 +0000 (19:02 -0400)]
greybus: connection: silence warning on unbound protocols
If a protocol was not successfully created, we can't drop the refcount
on it. This might happen for example if the connection fails to bind a
protocol.
Silences a warning on cleanup.
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Perry Hung [Fri, 24 Jul 2015 23:02:29 +0000 (19:02 -0400)]
greybus: battery: fix panic on operation error
If an operation times out or otherwise returns an error, val->intval
should not be set and an error-code should be returned.
Fixes a panic on unload while receiving -ENOTCONN.
Signed-off-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:22 +0000 (15:32 +0530)]
greybus: interface: localize gb_interface_destroy()
Its not referenced by svc or any other code anymore, lets stop exposing
it to rest of the files.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:21 +0000 (15:32 +0530)]
greybus: svc: remove interface->svc pointer
Its not updated/used anymore, remove it. Also move back the struct
gb_svc to svc.c as its not referenced by external users anymore.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:20 +0000 (15:32 +0530)]
greybus: svc: connection is created only once now
We no longer create a fresh connection on receiving svc-hello message,
but rather update the initial one.
Update 'initial_svc_connection' after the connection is fully
initialized. Look for the partially initialized connection while
removing hd, as hd might be removed before getting svc-hello requests
from svc.
Also update gb_svc_connection_init() to initialize id_map on the first
(and the only) call to connection-init function.
We also can't update connection->bundle->intf->svc, as its a bundle-less
connection. Lets stop updating intf->svc as its not really used.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Viresh Kumar [Fri, 24 Jul 2015 10:02:19 +0000 (15:32 +0530)]
greybus: svc: fully initialize the partially initialized connection
SVC hello message is received now and we should fully initialize the
partially initialized connection. This can be done by removing and
re-adding the device corresponding to the connection.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Perry Hung <perry@leaflabs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Fri, 24 Jul 2015 09:02:56 +0000 (10:02 +0100)]
greybus: loopback: convert loopback wake/sleep to a waitqueue
Current code will incrementally poll for gb->type == 0 and sleep.
This type of polling strategy wastes cycles.
This patch changes the sleep strategy by introducing a wait-queue which
waits for gb->type != 0 or kthread_should_stop() to wake-up and work or
to wake-up and terminate.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Wed, 22 Jul 2015 18:09:23 +0000 (11:09 -0700)]
greybus: loopback: add poll support to the iteration_count sysfs file
This adds the ability to poll on "iteration_count" in sysfs and be woken
up when it changes, saving some cycles constantly hammering on the file
waiting for it to change.
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Johan Hovold [Thu, 23 Jul 2015 08:50:03 +0000 (10:50 +0200)]
greybus: operation: add completion work queue
Add dedicated bound work queue for operation completions and use the
connection work queues for incoming requests only.
There is no need to keep responses ordered internally or with respect to
requests. Instead allow operations to complete as soon as possible when
a response arrives (or the operation is cancelled).
Note that this also allows synchronous requests to be submitted from
request handlers as responses will no longer be blocked on the same
single-threaded work queue. Similarly, operations can now also be
cancelled from a request handler.
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 23 Jul 2015 08:50:02 +0000 (10:50 +0200)]
greybus: operation: use per-connection work queues
Replace the global operation work queue with per-connection work queues.
There is no need to keep operations strictly ordered across connections,
something which only adds unnecessary latency.
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 23 Jul 2015 08:50:01 +0000 (10:50 +0200)]
greybus: connection: clean up creation error paths
Clean up connection-creation error paths.
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Thu, 23 Jul 2015 08:50:00 +0000 (10:50 +0200)]
greybus: connection: clean up connection creation
Add variable for the host cport id rather than overload retval.
Remove redundant automatic variable for the id map.
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Greg Kroah-Hartman [Thu, 23 Jul 2015 01:21:04 +0000 (18:21 -0700)]
greybus: connection: prevent oops for protocol_id sysfs file
If we don't have a protocol assigned to a connection, don't oops when
trying to read the "protocol_id" sysfs file.
Fixes Jira SW-968.
Reported-by: Alexandre Bailon <abailon@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Viresh Kumar [Thu, 23 Jul 2015 05:00:47 +0000 (10:30 +0530)]
greybus: svc: Fix build warning on 64bit systems
Fix below warnings that only generate for a 64 bit system:
greybus/svc.c:202:16: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘size_t {aka long unsigned int}’ [-Wformat=]
dev_err(dev, "%s: Illegal size of hello request (%d %d)\n",
^
greybus/svc.c:202:16: warning: format ‘%d’ expects argument of type ‘int’, but argument 5 has type ‘long unsigned int’ [-Wformat=]
Fixes:
9cbe73e0cf45 ("svc: Implement SVC requests")
Reported-by: Greg KH <gregkh@google.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Wed, 22 Jul 2015 15:49:19 +0000 (17:49 +0200)]
greybus: connection: fix connection initialisation
Make sure connection is fully initialised before registering the
connection device and adding it to the host-device and bundle lists.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Wed, 22 Jul 2015 15:49:18 +0000 (17:49 +0200)]
greybus: operation: clean up greybus_message_sent
Add connection variable to greybus_message_sent.
This will be put to more use by a follow-up up patch.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Johan Hovold [Wed, 22 Jul 2015 15:49:17 +0000 (17:49 +0200)]
greybus: operation: fix operation ordering
Make the operation work queue single threaded.
The operation work queue was meant to be single threaded, but due to a
missing flag instead allowed one active task per CPU, something which
could lead to requests being processed out of order on SMP systems.
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Tested-by: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 21 Jul 2015 22:50:10 +0000 (23:50 +0100)]
greybus: loopback: rename frequency to requests
The name frequency does not adequately describe the data-point tracking the
number of greybus operations performed in a second by the loopback code.
Firmware team is moving towards calling this variable requests-per-second
or similar. This patch renames to keep the namespace consistent.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 21 Jul 2015 22:50:09 +0000 (23:50 +0100)]
greybus: loopback: add commentary to sysfs variables
Add some missing comments.
Add a TODO to look at doing iteration_count with KOBJ_CHANGE event instead
of having user-space poll the value reported in iteration_count to
determine when a test set is complete.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Patrick Titiano <ptitiano@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Bryan O'Donoghue [Tue, 21 Jul 2015 22:50:08 +0000 (23:50 +0100)]
greybus: loopback: run operations a set number of times
In order to extract a meaningful set of data out of loopback metrics it
makes sense to have the ability to specify how many times a loopback
operation should run and then to stop when the threshold is hit.
This will allow exactly the same loopback data pattern to be run again and
again, which is a fundamental prerequisite to instrumenting and
characterizing the loopback interface over time.
This patch introduces a simple sysfs controlled variable iteration_max.
iteration_max is the maximum number of iterations to run for a given set.
iteration_count is used internally to count from zero to iteration_max
if-and-only-if iteration_max is non zero. If iteration_max is zero then the
original behaviour of running the test command ad infinitum is maintained.
User-space should incrementally poll the iteration_count to determine when
the sequence is finished.
To accomplish this we move away from running as many commands as possible
in a one second window and instead run a fixed number of commands and log
the time it takes for those commands to complete in aggregate. Since we are
no longer resetting counters every one second, the tracker variables have
been moved from u32 to u64 to allow for reasonably long tests to gather
reasonably large amounts of data, without fear of over-flowing the
data-points.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>