qed: Use the doorbell overflow recovery mechanism in case of doorbell overflow

In case of an attention from the doorbell queue block, analyze the HW
indications. In case of a doorbell overflow, exec

qed: Use the doorbell overflow recovery mechanism in case of doorbell overflow

In case of an attention from the doorbell queue block, analyze the HW
indications. In case of a doorbell overflow, execute a doorbell recovery.
Since there can be spurious indications (race conditions between multiple PFs),
schedule a periodic task for checking whether a doorbell overflow may have been
missed. After a set time with no indications, terminate the periodic task.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Fix reading wrong value in loop condition

The value of "sb_index" is written by the hardware. Reading its value and
writing it to "index" must finish before checking the loop condition.

Signed

qed: Fix reading wrong value in loop condition

The value of "sb_index" is written by the hardware. Reading its value and
writing it to "index" must finish before checking the loop condition.

Signed-off-by: Denis Bolotin <denis.bolotin@cavium.com>
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: fix spelling mistake "Ireelevant" -> "Irrelevant"

Trivial fix to spelling mistake in DP_INFO message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <da

qed: fix spelling mistake "Ireelevant" -> "Irrelevant"

Trivial fix to spelling mistake in DP_INFO message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

treewide: Fix typos in printk

This patch fixes spelling typos found in printk.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jir

treewide: Fix typos in printk

This patch fixes spelling typos found in printk.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

show more ...

qed*: HSI renaming for different types of HW

This patch renames defines and structures in the FW HSI files to allow a
distinction between different types of HW.

Signed-off-by: Ariel Elior <Ariel.El

qed*: HSI renaming for different types of HW

This patch renames defines and structures in the FW HSI files to allow a
distinction between different types of HW.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed*: Refactoring and rearranging FW API with no functional impact

This patch refactors and reorders the FW API files in preparation of
upgrading the code to support new FW.

- Make use of the BIT m

qed*: Refactoring and rearranging FW API with no functional impact

This patch refactors and reorders the FW API files in preparation of
upgrading the code to support new FW.

- Make use of the BIT macro in appropriate places.
- Whitespace changes to align values and code blocks.
- Comments are updated (spelling mistakes, removed if not clear).
- Group together code blocks which are related or deal with similar
matters.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Reset IGU CAM to default on init

The IGU CAM contains an assocaition between hardware SBs
and interrupt lines, and it can be dynamically configured
to allow more interrupts in one entity over a

qed: Reset IGU CAM to default on init

The IGU CAM contains an assocaition between hardware SBs
and interrupt lines, and it can be dynamically configured
to allow more interrupts in one entity over another, specifically
for Re-distibution of SBs between a PF and its child VFs.

While we don't yet use this functionality, there are other
clients that do and as such its possible the information
passed from management firmware during initialization in
regard to the possible number of SBs doesn't accurately reflect
the current HW configuration.

The following changes are going to apply to the driver init sequence:

a. PF is going to re-configure all entries belonging to itself and
its child VFs in IGU CAM based on the management firmware info
regarding the number of SBs that are supposed to exist there.

b. PF is going to stop using the SB resource [management firmware
provided information] for anything but the initialization.
Instead, it would use the live-time counters it maintains for
the numbers.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Hold a single array for SBs

A PF today holds 2 different arrays - one holding information
about the HW configuration and one holding information about
the SBs that are used by the protocol driv

qed: Hold a single array for SBs

A PF today holds 2 different arrays - one holding information
about the HW configuration and one holding information about
the SBs that are used by the protocol drivers.
These arrays aren't really connected - e.g., protocol driver
initializing a given SB would not mark the same SB as occupied
in the HW shadow array.

Move into a single array [at least for PFs] - hold the mapping
of the driver-protocol SBs on the HW entry which they configure.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Provide auxiliary for getting free VF SB

IOV code is very intrusive in its manipulation of the status block
database.
Add a new auxiliary function to allow the PF to find an available unused
st

qed: Provide auxiliary for getting free VF SB

IOV code is very intrusive in its manipulation of the status block
database.
Add a new auxiliary function to allow the PF to find an available unused
status block to configure for a specific VF's MSI-x vector.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Remove assumption on SB order in IGU

Current code assumes there's a known layout for SBs in the IGU,
where all the SBs of a single entity would be laid in consecutive
order of vectors.

While t

qed: Remove assumption on SB order in IGU

Current code assumes there's a known layout for SBs in the IGU,
where all the SBs of a single entity would be laid in consecutive
order of vectors.

While the assumption is still kept by management firmware, we already
have the necessary information to eliminate it, so no reason to keep
it in code.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Encapsulate interrupt counters in struct

We already have an API struct that contains interrupt-related
numbers. Use it to encapsulate all information relating to the
status of SBs as (used|free

qed: Encapsulate interrupt counters in struct

We already have an API struct that contains interrupt-related
numbers. Use it to encapsulate all information relating to the
status of SBs as (used|free).

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Add aux. function translating sb_id -> igu_sb_id

An additional step for relaxing the IGU order assumption, we now add
an auxiliary function that can be used for finding the HW status block
that

qed: Add aux. function translating sb_id -> igu_sb_id

An additional step for relaxing the IGU order assumption, we now add
an auxiliary function that can be used for finding the HW status block
that's associated with a given MSI-x vector.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Distinguish between sb_id and igu_sb_id

In qed code, sb_id means 2 different things:
- An interrupt vector [usually when received as a parameter from
a protocol driver, but not only] that

qed: Distinguish between sb_id and igu_sb_id

In qed code, sb_id means 2 different things:
- An interrupt vector [usually when received as a parameter from
a protocol driver, but not only] that's associated with a status
block.

- An index to a status block entity existing in HW.

This patch renames the references to the HW entity, adding an 'igu_'
prefix to allow an easier distinction.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: IGU read revised

As a first step for relaxing various assumptions done by driver
about the IGU mapping, the driver is now going to read the entire
IGU into a shadow copy, and mark in its databa

qed: IGU read revised

As a first step for relaxing various assumptions done by driver
about the IGU mapping, the driver is now going to read the entire
IGU into a shadow copy, and mark in its database each status block
that's relevant for it.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Minor refactoring in interrupt code

Separate the portions controlling interrupt enablement form those
controlling the ability of HW to generate attentions.

Signed-off-by: Yuval Mintz <Yuval.Mi

qed: Minor refactoring in interrupt code

Separate the portions controlling interrupt enablement form those
controlling the ability of HW to generate attentions.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Make qed_int_cau_conf_pi() static

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qed: Mask parities after occurance

Parities might exhibit a flood behavior since we re-enable the
attention line without preventing the parity from re-triggering the
assertion.
Mask the source in AE

qed: Mask parities after occurance

Parities might exhibit a flood behavior since we re-enable the
attention line without preventing the parity from re-triggering the
assertion.
Mask the source in AEU until the parity would be handled.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Print multi-bit attentions properly

In strucuture reflecting the AEU hw block some entries
represent multiple HW bits, and the associated name is in fact
a pattern.
Today, whenever such an atte

qed: Print multi-bit attentions properly

In strucuture reflecting the AEU hw block some entries
represent multiple HW bits, and the associated name is in fact
a pattern.
Today, whenever such an attention would be asserted the resulted
prints would show the pattern string instead of indicating which
of the possible bits was set.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Diffrentiate adapter-specific attentions

There are 4 attention bits in AEU that have different meaning
for QL45xxx and QL41xxx adapters.

Instead of doing a massive infrastructure change in fav

qed: Diffrentiate adapter-specific attentions

There are 4 attention bits in AEU that have different meaning
for QL45xxx and QL41xxx adapters.

Instead of doing a massive infrastructure change in favor of these
bits, we implement a point fix where only those four would change
meaning dependent on the adapter involved.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Get rid of the attention-arrays

We have almost all the necessary information regarding attentions
in the logic employed for taking register dumps.
Add some more and get rid of the seperate impl

qed: Get rid of the attention-arrays

We have almost all the necessary information regarding attentions
in the logic employed for taking register dumps.
Add some more and get rid of the seperate implementation we have today
for identifying & printing various attention sources.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed: Revise alloc/setup/free flow

Re-organize the logic that allocates and frees memory of various
sub-components of the hw-function -

a. No need to pass pointers to said structure as parameters;

qed: Revise alloc/setup/free flow

Re-organize the logic that allocates and frees memory of various
sub-components of the hw-function -

a. No need to pass pointers to said structure as parameters;
The internal logic knows exactly where to find/set the data.

b. Nullify pointers after cleanup to prevent possible errors to
re-entrant code.

Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

treewide: spelling: correct diffrent[iate] and banlance typos

Add these misspellings to scripts/spelling.txt too

Link: http://lkml.kernel.org/r/962aace119675e5fe87be2a88ddac1a5486f8e60.1490931810.g

treewide: spelling: correct diffrent[iate] and banlance typos

Add these misspellings to scripts/spelling.txt too

Link: http://lkml.kernel.org/r/962aace119675e5fe87be2a88ddac1a5486f8e60.1490931810.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

show more ...

qed: Revise QM cofiguration

Refactor and clean up the queue manager initialization logic.
Also, this adds support for RoC low latency queues, which later
would be used for improving RoCE latency in

qed: Revise QM cofiguration

Refactor and clean up the queue manager initialization logic.
Also, this adds support for RoC low latency queues, which later
would be used for improving RoCE latency in high throughput scenarios.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

qed*: Update to dual-license

Since the submission of the qedr driver, there's inconsistency
in the licensing of the various qed/qede files - some are GPLv2
and some are dual-license.
Since qedr requ

qed*: Update to dual-license

Since the submission of the qedr driver, there's inconsistency
in the licensing of the various qed/qede files - some are GPLv2
and some are dual-license.
Since qedr requires dual-license and it's dependent on both,
we're updating the licensing of all qed/qede source files.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

treewide: Fix printk() message errors

This patch fix spelling typos in printk and kconfig.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed

treewide: Fix printk() message errors

This patch fix spelling typos in printk and kconfig.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

show more ...