linux-stable.git/drivers/net/ipa/ipa_main.c, branch v6.2.2

net: ipa: add IPA v4.7 support

2022-12-12T23:55:06+00:00

Add the necessary register and data definitions needed for IPA v4.7,
which is found on the SM6350 SoC.

Co-developed-by: Luca Weiss 
Signed-off-by: Luca Weiss 
Signed-off-by: Alex Elder 
Signed-off-by: Jakub Kicinski

net: ipa: permit GSI firmware loading to be skipped

2022-11-18T05:46:55+00:00

Define a new value "skip" for the "qcom,gsi-loader" Device Tree
property.  If used, it indicates that neither the AP nor the modem
need to load GSI firmware (because it has already been loaded--for
example by the boot loader).

Signed-off-by: Alex Elder 
Signed-off-by: Jakub Kicinski

net: ipa: introduce "qcom,gsi-loader" property

2022-11-18T05:46:54+00:00

Introduce a new way of specifying how the GSI firmware gets loaded
for IPA.  Currently, this is indicated by the presence or absence of
the Boolean "modem-init" Device Tree property.  The new property
must have a value--either "self" or "modem"--which indicates whether
the AP or modem is the GSI firmware loader, respectively.

For legacy systems, the new property will not exist, and the
"modem-init" property will be used.  For newer systems, the
"qcom,gsi-loader" property *must* exist, and must have one of the
two prescribed values.  It is an error to have both properties
defined, and it is an error for the new property to have an
unrecognized value.

Signed-off-by: Alex Elder 
Signed-off-by: Jakub Kicinski

net: ipa: encapsulate decision about firmware load

2022-11-18T05:46:54+00:00

The GSI layer used for IPA requires firmware to be loaded.

Currently either the AP or the modem loads the firmware,
distinguished by whether the "modem-init" Device Tree
property is defined.

Some newer systems implement a third option.  In preparation for
that, encapsulate the code that determines how the GSI firmware
gets loaded in a new function, ipa_firmware_loader().

Signed-off-by: Alex Elder 
Signed-off-by: Jakub Kicinski

net: ipa: support more filtering endpoints

2022-11-04T10:16:53+00:00

Prior to IPA v5.0, there could be no more than 32 endpoints.

A filter table begins with a bitmap indicating which endpoints have
a filter defined.  That bitmap is currently assumed to fit in a
32-bit value.

Starting with IPA v5.0, more than 32 endpoints are supported, so
it's conceivable that a TX endpoint has an ID that exceeds 32.
Increase the size of the field representing endpoints that support
filtering to 64 bits.  Rename the bitmap field "filtered".

Unlike other similar fields, we do not use an (arbitrarily long)
Linux bitmap for this purpose.  The reason is that if a filter table
ever *did* need to support more than 64 TX endpoints, its format
would change in ways we can't anticipate.

Have ipa_endpoint_init() return a negative errno rather than a mask
that indicates which endpoints support filtering, and have that
function assign the "filtered" field directly.

Signed-off-by: Alex Elder 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-10-27T23:56:36+00:00

drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
  2871edb32f46 ("can: kvaser_usb: Fix possible completions during init_completion")
  abb8670938b2 ("can: kvaser_usb_leaf: Ignore stale bus-off after start")
  8d21f5927ae6 ("can: kvaser_usb_leaf: Fix improved state not being reported")

Signed-off-by: Jakub Kicinski

net: ipa: don't assume 8 modem routing table entries

2022-10-27T11:38:13+00:00

Currently all platforms are assumed allot 8 routing table entries
for use by the modem.  Instead, add a new configuration data entry
that defines the number of modem routing table entries, and record
that in the IPA structure.

Signed-off-by: Alex Elder 
Signed-off-by: Paolo Abeni

net: ipa: don't configure IDLE_INDICATION on v3.1

2022-10-26T02:49:13+00:00

IPA v3.1 doesn't support the IDLE_INDICATION_CFG register, this was
causing a harmless splat in ipa_idle_indication_cfg(), add a version
check to prevent trying to fetch this register on v3.1

Fixes: 6a244b75cfab ("net: ipa: introduce ipa_reg()")
Signed-off-by: Caleb Connolly 
Reviewed-by: Alex Elder 
Tested-by: Jami Kettunen 
Link: https://lore.kernel.org/r/20221024234850.4049778-1-caleb.connolly@linaro.org
Signed-off-by: Jakub Kicinski

net: ipa: update copyrights

2022-10-03T23:49:20+00:00

Some source files state copyright dates that are earlier than the
last modification of the file.  Change the copyright year to 2022 in
all such cases.

Signed-off-by: Alex Elder 
Link: https://lore.kernel.org/r/20220930224549.3503434-1-elder@linaro.org
Signed-off-by: Jakub Kicinski

net: ipa: define even more IPA register fields

2022-09-28T01:42:51+00:00

Define the fields for the FLAVOR_0, IDLE_INDICATION_CFG,
QTIME_TIMESTAMP_CFG, TIMERS_XO_CLK_DIV_CFG and TIMERS_PULSE_GRAN_CFG
IPA registers for all supported IPA versions.

Create enumerated types to identify fields for these IPA registers.
Use IPA_REG_FIELDS() to specify the field mask values defined for
these registers, for each supported version of IPA.

Use ipa_reg_bit() and ipa_reg_encode() to build up the values to be
written to these registers.  Use ipa_reg_decode() to extract field
values from the FLAVOR_0 register.

Remove the definition of the no-longer-used *_FMASK symbols.

Signed-off-by: Alex Elder 
Signed-off-by: Jakub Kicinski