History log of /openbmc/linux/drivers/net/wireless/intel/iwlwifi/pcie/rx.c (Results 1 – 25 of 260)
Revision (<<< Hide revision tags) (Show revision tags >>>) Date Author Comments
Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50
# 9fe75ad3 30-Aug-2023 Johannes Berg <johannes.berg@intel.com>

wifi: iwlwifi: pcie: fix RB status reading

commit 9f9797c7de18d2ec6be4ef6e0abbaea585040b39 upstream.

On newer hardware, a queue's RB status / write pointer
can be bigger than 4095 (0xFFF), so we ca

wifi: iwlwifi: pcie: fix RB status reading

commit 9f9797c7de18d2ec6be4ef6e0abbaea585040b39 upstream.

On newer hardware, a queue's RB status / write pointer
can be bigger than 4095 (0xFFF), so we cannot mask the
value by 0xFFF unconditionally. Since anyway that's
only necessary on older hardware, move the masking to
the helper function and apply it only for older HW.
This also moves the endian conversion in to handle it
more easily.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230830112059.7be2a3fff6f4.I94f11dee314a4f7c1941d2d223936b1fa8aa9ee4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Revision tags: v6.6.25, v6.6.24, v6.6.23, v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8, v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6, v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3, v6.5.2, v6.1.51, v6.5.1, v6.1.50
# 9fe75ad3 30-Aug-2023 Johannes Berg <johannes.berg@intel.com>

wifi: iwlwifi: pcie: fix RB status reading

commit 9f9797c7de18d2ec6be4ef6e0abbaea585040b39 upstream.

On newer hardware, a queue's RB status / write pointer
can be bigger than 4095 (0xFFF), so we ca

wifi: iwlwifi: pcie: fix RB status reading

commit 9f9797c7de18d2ec6be4ef6e0abbaea585040b39 upstream.

On newer hardware, a queue's RB status / write pointer
can be bigger than 4095 (0xFFF), so we cannot mask the
value by 0xFFF unconditionally. Since anyway that's
only necessary on older hardware, move the masking to
the helper function and apply it only for older HW.
This also moves the endian conversion in to handle it
more easily.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230830112059.7be2a3fff6f4.I94f11dee314a4f7c1941d2d223936b1fa8aa9ee4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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# 015cfa30 06-Dec-2023 Avraham Stern <avraham.stern@intel.com>

wifi: iwlwifi: pcie: avoid a NULL pointer dereference

[ Upstream commit ce038edfce43fb345f8dfdca0f7b17f535896701 ]

It possible that while the rx rb is being handled, the transport has
been stopped

wifi: iwlwifi: pcie: avoid a NULL pointer dereference

[ Upstream commit ce038edfce43fb345f8dfdca0f7b17f535896701 ]

It possible that while the rx rb is being handled, the transport has
been stopped and re-started. In this case the tx queue pointer is not
yet initialized, which will lead to a NULL pointer dereference.
Fix it.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231207044813.cd0898cafd89.I0b84daae753ba9612092bf383f5c6f761446e964@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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# ad1220bb 15-Dec-2023 Johannes Berg <johannes.berg@intel.com>

wifi: iwlwifi: pcie: don't synchronize IRQs from IRQ

[ Upstream commit 400f6ebbc175286576c7f7fddf3c347d09d12310 ]

On older devices (before unified image!) we can end up calling
stop_device from an

wifi: iwlwifi: pcie: don't synchronize IRQs from IRQ

[ Upstream commit 400f6ebbc175286576c7f7fddf3c347d09d12310 ]

On older devices (before unified image!) we can end up calling
stop_device from an rfkill interrupt. However, in stop_device
we attempt to synchronize IRQs, which then of course deadlocks.

Avoid this by checking the context, if running from the IRQ
thread then don't synchronize. This wouldn't be correct on a
new device since RSS is supported, but older devices only have
a single interrupt/queue.

Fixes: 37fb29bd1f90 ("wifi: iwlwifi: pcie: synchronize IRQs before NAPI")
Reviewed-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231215111335.59aab00baed7.Iadfe154d6248e7f9dfd69522e5429dbbd72925d7@changeid
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Revision tags: v6.5, v6.1.49, v6.1.48, v6.1.46
# d5050543 16-Aug-2023 Johannes Berg <johannes.berg@intel.com>

wifi: iwlwifi: remove 'def_rx_queue' struct member

This is only ever initialized to zero, use a new define
for the default RX queue instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
S

wifi: iwlwifi: remove 'def_rx_queue' struct member

This is only ever initialized to zero, use a new define
for the default RX queue instead.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230816104355.e0c6fa57c162.I907bbb428cf99725f06a348c8dbce5d3dd877136@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Revision tags: v6.1.45, v6.1.44, v6.1.43, v6.1.42, v6.1.41, v6.1.40, v6.1.39, v6.1.38, v6.1.37, v6.1.36, v6.4, v6.1.35
# 4742c732 20-Jun-2023 Johannes Berg <johannes.berg@intel.com>

wifi: iwlwifi: pcie: refactor RB status size calculation

We have three places doing this check, and even in
slightly different ways (with/without an intermediate).
Refactor that to a new small inlin

wifi: iwlwifi: pcie: refactor RB status size calculation

We have three places doing this check, and even in
slightly different ways (with/without an intermediate).
Refactor that to a new small inline function.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230620125813.f3e87ddd5bce.Ifefba753043b68c394590a35bc6914a0f6497fd3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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# 1902f195 14-Jun-2023 Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>

wifi: iwlwifi: pcie: fix NULL pointer dereference in iwl_pcie_irq_rx_msix_handler()

rxq can be NULL only when trans_pcie->rxq is NULL and entry->entry
is zero. For the case when entry->entry is not

wifi: iwlwifi: pcie: fix NULL pointer dereference in iwl_pcie_irq_rx_msix_handler()

rxq can be NULL only when trans_pcie->rxq is NULL and entry->entry
is zero. For the case when entry->entry is not equal to 0, rxq
won't be NULL even if trans_pcie->rxq is NULL. Modify checker to
check for trans_pcie->rxq.

Fixes: abc599efa67b ("iwlwifi: pcie: don't crash when rx queues aren't allocated in interrupt")
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230614123446.5a5eb3889a4a.I375a1d58f16b48cd2044e7b7caddae512d7c86fd@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Revision tags: v6.1.34
# d4f1a50c 12-Jun-2023 Johannes Berg <johannes.berg@intel.com>

wifi: iwlwifi: unify checks for HW error values

The hardware, depending on which part fails or times out,
returns 0xA5A5A5A. or 0x5A5A5A5. with the lowest 4 bits
encoding some further reason/status.

wifi: iwlwifi: unify checks for HW error values

The hardware, depending on which part fails or times out,
returns 0xA5A5A5A. or 0x5A5A5A5. with the lowest 4 bits
encoding some further reason/status. However, mostly we
don't really need to care about the exact reasons, so
unify the checks for this to avoid hardcoding those magic
values all over the driver.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230612184434.3e2959741a38.I1c297a53787b87e4e2b8f296c041921338573f4d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Revision tags: v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25
# 5af2bb31 16-Apr-2023 Gregory Greenman <gregory.greenman@intel.com>

wifi: iwlwifi: call napi_synchronize() before freeing rx/tx queues

When rx/tx queues are being freed, on a different CPU there could be
still rx flow running. Call napi_synchronize() to prevent such

wifi: iwlwifi: call napi_synchronize() before freeing rx/tx queues

When rx/tx queues are being freed, on a different CPU there could be
still rx flow running. Call napi_synchronize() to prevent such a race.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Co-developed-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Link: https://lore.kernel.org/r/20230416154301.5171ee44dcc1.Iff18718540da412e084e7d8266447d40730600ed@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

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Revision tags: v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13, v6.2, v6.1.12, v6.1.11, v6.1.10, v6.1.9, v6.1.8, v6.1.7, v6.1.6, v6.1.5, v6.0.19, v6.0.18, v6.1.4, v6.1.3, v6.0.17, v6.1.2, v6.0.16, v6.1.1, v6.0.15, v6.0.14, v6.0.13, v6.1, v6.0.12, v6.0.11, v6.0.10, v5.15.80, v6.0.9, v5.15.79, v6.0.8, v5.15.78, v6.0.7, v5.15.77, v5.15.76, v6.0.6, v6.0.5, v5.15.75, v6.0.4, v6.0.3, v6.0.2, v5.15.74, v5.15.73, v6.0.1, v5.15.72, v6.0, v5.15.71
# b48b89f9 27-Sep-2022 Jakub Kicinski <kuba@kernel.org>

net: drop the weight argument from netif_napi_add

We tell driver developers to always pass NAPI_POLL_WEIGHT
as the weight to netif_napi_add(). This may be confusing
to newcomers, drop the weight arg

net: drop the weight argument from netif_napi_add

We tell driver developers to always pass NAPI_POLL_WEIGHT
as the weight to netif_napi_add(). This may be confusing
to newcomers, drop the weight argument, those who really
need to tweak the weight can use netif_napi_add_weight().

Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for CAN
Link: https://lore.kernel.org/r/20220927132753.750069-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Revision tags: v5.15.70, v5.15.69, v5.15.68, v5.15.67, v5.15.66, v5.15.65, v5.15.64, v5.15.63, v5.15.62, v5.15.61, v5.15.60, v5.15.59, v5.19, v5.15.58, v5.15.57, v5.15.56, v5.15.55, v5.15.54, v5.15.53, v5.15.52, v5.15.51, v5.15.50, v5.15.49, v5.15.48, v5.15.47, v5.15.46, v5.15.45, v5.15.44, v5.15.43, v5.15.42, v5.18, v5.15.41, v5.15.40, v5.15.39, v5.15.38, v5.15.37, v5.15.36, v5.15.35, v5.15.34, v5.15.33, v5.15.32, v5.15.31, v5.17, v5.15.30, v5.15.29, v5.15.28, v5.15.27, v5.15.26, v5.15.25, v5.15.24, v5.15.23, v5.15.22, v5.15.21, v5.15.20, v5.15.19, v5.15.18, v5.15.17, v5.4.173, v5.15.16, v5.15.15, v5.16, v5.15.10, v5.15.9
# 195a367e 16-Dec-2021 Xiang wangx <wangxiang@cdjrlc.com>

iwlwifi: Fix syntax errors in comments

Delete the redundant word 'the'.

Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Link: https://lore.kernel.org/r/20211216085756.11053-1-wangxiang@cdjrlc.com

iwlwifi: Fix syntax errors in comments

Delete the redundant word 'the'.

Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com>
Link: https://lore.kernel.org/r/20211216085756.11053-1-wangxiang@cdjrlc.com
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# 91ca9c3a 05-Feb-2022 Emmanuel Grumbach <emmanuel.grumbach@intel.com>

iwlwifi: don't dump_stack() when we get an unexpected interrupt

It is yet unclear if the WARNING really points to a real problem,
but for sure the stack dump doesn't help fixing it.
Just use a regul

iwlwifi: don't dump_stack() when we get an unexpected interrupt

It is yet unclear if the WARNING really points to a real problem,
but for sure the stack dump doesn't help fixing it.
Just use a regular error print instead.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220205112029.a79e733a12f7.I8189344294222be0589fa43cc70fdf38e3057045@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# fba58d37 04-Feb-2022 Matti Gottlieb <matti.gottlieb@intel.com>

iwlwifi: pcie: Adapt rx queue write pointer for Bz family

Adapt rx queue write pointer for Bz family.
The register has moved to the same one as Tx.

Signed-off-by: Matti Gottlieb <matti.gottlieb@int

iwlwifi: pcie: Adapt rx queue write pointer for Bz family

Adapt rx queue write pointer for Bz family.
The register has moved to the same one as Tx.

Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220204122220.57bd62a4365c.I873aa9b3d13abf5633a4963c55c3a09a833254f0@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# 5d19e208 04-Feb-2022 Johannes Berg <johannes.berg@intel.com>

iwlwifi: pcie: adjust to Bz completion descriptor

The Bz devices got a new completion descriptor again since
we only ever really used 4 out of 32 bytes anyway. Adjust
the code to deal with that. Not

iwlwifi: pcie: adjust to Bz completion descriptor

The Bz devices got a new completion descriptor again since
we only ever really used 4 out of 32 bytes anyway. Adjust
the code to deal with that. Note that the intention was to
reduce the size, but the hardware was implemented wrongly.

While at it, do some cleanups and remove the union to simplify
the code, clean up iwl_pcie_free_bd_size() to no longer need
an argument and add iwl_pcie_used_bd_size() with the logic to
selct completion descriptor size.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220204122220.bef461a04110.I90c8885550fa54eb0aaa4363d322f50e301175a6@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# f1658dcb 30-Jan-2022 Andrei Otcheretianski <andrei.otcheretianski@intel.com>

iwlwifi: pcie: make sure iwl_rx_packet_payload_len() will not underflow

If the device is malfunctioning and reports too short rx descriptor
length, iwl_rx_packet_payload_len() will underflow, eventu

iwlwifi: pcie: make sure iwl_rx_packet_payload_len() will not underflow

If the device is malfunctioning and reports too short rx descriptor
length, iwl_rx_packet_payload_len() will underflow, eventually resulting
in accessing memory out of bounds and other bad things. Prevent this.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220130115024.ea00b52c6f25.I8b79b14f1af8b6f2f579f97b397b9e005fe446b1@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# c0941ace 29-Jan-2022 Mukesh Sisodiya <mukesh.sisodiya@intel.com>

iwlwifi: yoyo: add IMR DRAM dump support

Support debug collection of the platform IMR memory region,
where data is copied by FW during d3 state

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel

iwlwifi: yoyo: add IMR DRAM dump support

Support debug collection of the platform IMR memory region,
where data is copied by FW during d3 state

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220129105618.715f04ecc635.Ib89a6caa06c1324c1c0dd3f9f4cf7407f2857155@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# 3827cb59 28-Jan-2022 Johannes Berg <johannes.berg@intel.com>

iwlwifi: avoid void pointer arithmetic

Avoid void pointer arithmetic since it's technically
undefined and causes warnings in some places that use
our code.

Signed-off-by: Johannes Berg <johannes.be

iwlwifi: avoid void pointer arithmetic

Avoid void pointer arithmetic since it's technically
undefined and causes warnings in some places that use
our code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153014.e349104ecd94.Iadc937f475158b9437becdfefb361a97e7eaa934@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# f0c86427 28-Jan-2022 Johannes Berg <johannes.berg@intel.com>

iwlwifi: prefer WIDE_ID() over iwl_cmd_id()

The order of arguments for iwl_cmd_id() is confusing, and the
version is always 0 and thus a useless argument. Prefer the
WIDE_ID() macro (which needs to

iwlwifi: prefer WIDE_ID() over iwl_cmd_id()

The order of arguments for iwl_cmd_id() is confusing, and the
version is always 0 and thus a useless argument. Prefer the
WIDE_ID() macro (which needs to be a macro due to use in switch
cases etc.) over the iwl_cmd_id() function.

Obviously done with spatch:

@@
expression G, C;
@@
-iwl_cmd_id(C, G, 0)
+WIDE_ID(G, C)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153014.cc4f9d1a2e9b.Ieb023cd773ea22e819d1ef1c37ae857ecc1a839d@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# 459fc0f2 19-Dec-2021 Luca Coelho <luciano.coelho@intel.com>

iwlwifi: pcie: make sure prph_info is set when treating wakeup IRQ

In some rare cases when the HW is in a bad state, we may get this
interrupt when prph_info is not set yet. Then we will try to
der

iwlwifi: pcie: make sure prph_info is set when treating wakeup IRQ

In some rare cases when the HW is in a bad state, we may get this
interrupt when prph_info is not set yet. Then we will try to
dereference it to check the sleep_notif element, which will cause an
oops.

Fix that by ignoring the interrupt if prph_info is not set yet.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211219132536.0537aa562313.I183bb336345b9b3da196ba9e596a6f189fbcbd09@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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Revision tags: v5.15.8, v5.15.7, v5.15.6, v5.15.5, v5.15.4, v5.15.3, v5.15.2, v5.15.1, v5.15
# 571836a0 24-Oct-2021 Mike Golant <michael.golant@intel.com>

iwlwifi: pcie: update sw error interrupt for BZ family

The cause for sw error in BZ device family was changed

Signed-off-by: Mike Golant <michael.golant@intel.com>
Signed-off-by: Luca Coelho <lucia

iwlwifi: pcie: update sw error interrupt for BZ family

The cause for sw error in BZ device family was changed

Signed-off-by: Mike Golant <michael.golant@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211024165252.f674cd409b8e.I519f554d0a22d4711077785ec2bd7c564997241f@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# 0c3f9c13 19-Dec-2021 Luca Coelho <luciano.coelho@intel.com>

iwlwifi: pcie: make sure prph_info is set when treating wakeup IRQ

[ Upstream commit 459fc0f2c6b0f6e280bfa0f230c100c9dfe3a199 ]

In some rare cases when the HW is in a bad state, we may get this
int

iwlwifi: pcie: make sure prph_info is set when treating wakeup IRQ

[ Upstream commit 459fc0f2c6b0f6e280bfa0f230c100c9dfe3a199 ]

In some rare cases when the HW is in a bad state, we may get this
interrupt when prph_info is not set yet. Then we will try to
dereference it to check the sleep_notif element, which will cause an
oops.

Fix that by ignoring the interrupt if prph_info is not set yet.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211219132536.0537aa562313.I183bb336345b9b3da196ba9e596a6f189fbcbd09@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Revision tags: v5.14.14, v5.14.13, v5.14.12, v5.14.11, v5.14.10, v5.14.9, v5.14.8, v5.14.7, v5.14.6, v5.10.67, v5.10.66, v5.14.5, v5.14.4, v5.10.65, v5.14.3, v5.10.64, v5.14.2, v5.10.63, v5.14.1, v5.10.62, v5.14, v5.10.61, v5.10.60
# e63aafea 02-Aug-2021 Johannes Berg <johannes.berg@intel.com>

iwlwifi: pcie: dump error on FW reset handshake failures

If the firmware crashes while we're waiting for the reset
handshake then it cannot possibly make progress anymore,
and we will just time out

iwlwifi: pcie: dump error on FW reset handshake failures

If the firmware crashes while we're waiting for the reset
handshake then it cannot possibly make progress anymore,
and we will just time out the wait. That's pointless, so
just stop waiting at that point.

Additionally, if it never acknowledges the reset handshake,
something went wrong.

Dump an error in both of these cases, but we need to do it
synchronously here since the device will be turned off.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802170640.8b6a33544b4b.I55f97f70f8efa64db064a9207177a094c60ac8f1@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# b8221b0f 02-Aug-2021 Johannes Berg <johannes.berg@intel.com>

iwlwifi: prepare for synchronous error dumps

In some cases it may be necessary to synchronously create
a firmware error report, add the necessary infrastructure
for this.

Signed-off-by: Johannes Be

iwlwifi: prepare for synchronous error dumps

In some cases it may be necessary to synchronously create
a firmware error report, add the necessary infrastructure
for this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802170640.481b6642f0fc.I7c9c958408a285e3d19aceed2a5a3341cfc08382@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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# 6ac57200 02-Aug-2021 Johannes Berg <johannes.berg@intel.com>

iwlwifi: pcie: free RBs during configure

When switching op-modes, or more generally when reconfiguring,
we might switch the RB size. In _iwl_pcie_rx_init() we have a
comment saying we must free all

iwlwifi: pcie: free RBs during configure

When switching op-modes, or more generally when reconfiguring,
we might switch the RB size. In _iwl_pcie_rx_init() we have a
comment saying we must free all RBs since we might switch the
size, but this is actually too late: the switch has been done
and we'll free the buffers with the wrong size.

Fix this by always freeing the buffers, if any, at the start
of configure, instead of only after the size may have changed.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210802170640.42d7c93279c4.I07f74e65aab0e3d965a81206fcb289dc92d74878@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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Revision tags: v5.10.53, v5.10.52, v5.10.51, v5.10.50, v5.10.49, v5.13, v5.10.46
# 8e08e191 17-Jun-2021 Johannes Berg <johannes.berg@intel.com>

iwlwifi: pcie: remove TR/CR tail allocations

The TR/CR tail data are meant to be per-queue-arrays, however,
we allocate them completely wrong (we have a separate allocation
per queue).

Looking at t

iwlwifi: pcie: remove TR/CR tail allocations

The TR/CR tail data are meant to be per-queue-arrays, however,
we allocate them completely wrong (we have a separate allocation
per queue).

Looking at this more closely, it turns out that the hardware
never uses these - we have a separate free list per RX queue
and maintain a write pointer for that in a register, and the
RX itself is indicated in the RB status (rb_stts) DMA region.

Despite nothing using the tail pointers, the hardware will
unconditionally access them to write updates, even when we aren't
using CRs/TRs.

Give it dummy values that we never use/update so it can do that
without causing trouble.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210617110647.5f5764e04c46.I4d5de1929be048085767f1234a1e07b517ab6a2d@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

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