902592 Commits

Author SHA1 Message Date
Kalle Valo
4bbf92b7a1 First set of iwlwifi patches intended for v5.7
* Refactoring of the device selection algorithms;
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Merge tag 'iwlwifi-next-for-kalle-2020-03-17' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

First set of iwlwifi patches intended for v5.7

* Refactoring of the device selection algorithms;
2020-03-18 14:05:09 +02:00
Kalle Valo
48346a9557 mt76 patches for 5.7
* MT7663 support for the MT7615 driver
 * USB fixes
 * DBDC fixes for MT7615
 * MT76x02 watchdog fixes
 * Injection fix for MT7615
 * Sensitivity fix for MT7615
 * MCU support code cleanup
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Merge tag 'mt76-for-kvalo-2020-03-17' of https://github.com/nbd168/wireless

mt76 patches for 5.7

* MT7663 support for the MT7615 driver
* USB fixes
* DBDC fixes for MT7615
* MT76x02 watchdog fixes
* Injection fix for MT7615
* Sensitivity fix for MT7615
* MCU support code cleanup
2020-03-18 14:01:24 +02:00
Luca Coelho
5e003982b0 iwlwifi: move AX200 devices to the new table
Move the AX200 devices to the new table and add the appropriate cfg
struct and strings.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.fdfa5f31b8b1.Idfd28829d9f3820de06d3bba8fa66048b8d0d0b0@changeid
2020-03-17 21:10:47 +02:00
Luca Coelho
a363e77d9f iwlwifi: remove trans entries from COMMON 9260 macro
These entries are decided at runtime using the new parameters now, so
they are not needed in the macro that is reused in the configs.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.3387a6c8fdbe.I98284457f26c5695754964b28f0257a7dc7c6b1c@changeid
2020-03-17 21:10:47 +02:00
Luca Coelho
2edf602d40 iwlwifi: move shared clock entries to new table
These devices can now also be fully differentiated by using the new
parameters.  Move them all to the new table format.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.11c65d195677.I8faf50b325282df4892520a3b21fbdedabbb64f0@changeid
2020-03-17 21:10:47 +02:00
Luca Coelho
c8685937d0 iwlwifi: move pu devices to new table
All the pu devices can now be differentiated using the new
parameters, so move them all to the new tables accordingly.

This also includes removal of a few deprecated IDs and redundant cfg
structs.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.e7dc61e665f3.I44dcf9195bb8cc9e8c8e3e87182e9185c819a99d@changeid
2020-03-17 21:10:46 +02:00
Luca Coelho
f19b0f76e9 iwlwifi: remove 9260 devices with 0x1010 and 0x1210 subsytem IDs
These devices don't exist anymore, so remove them from the tables.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.fef62aa45887.I302e32b7cfff7da0d920547fae60ad9f2296e052@changeid
2020-03-17 21:10:46 +02:00
Luca Coelho
55cf5fb9ff iwlwifi: convert the 9260-1x1 device to use the new parameters
The 9260-1x1 device can be differentiated using the PCI device ID.
There is a single occurrence of this device, so continue relying on
the device and subsystem device IDs.

The name of this device was incorrect, so add a new string
specifically for it.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.4d74e1be7cac.Id27bd9c878b73cb771691cbe6082fd40e079b44d@changeid
2020-03-17 21:10:46 +02:00
Luca Coelho
fe25b1518f iwlwifi: move TH1 devices to the new table
TH1 devices can now be fully differentiated by using the device
parameters we have (particularly the RF_TYPE).  Start using these
parameters instead of hardcoding to specific subsystem device IDs.

This also fixes the name of one of the TH1 devices that was
erroneously using the 9260 struct and renames 9160 to 9162.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.18d4304b5454.Ib168d186da88393e9ec46f0fca523edb48d9138e@changeid
2020-03-17 21:10:46 +02:00
Luca Coelho
b200dba702 iwlwifi: map 9461 and 9462 using RF type and RF ID
These devices can be differentiated depending on the RF type and RF
ID.  Change them to use these instead of relying on the subsystem
device IDs.

This also fixes some names that were not including 160MHz (as they
should).

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.345de1efb3ec.Ib9221027a955188ea7c1ffca8a45bccd6c1e6a13@changeid
2020-03-17 21:10:46 +02:00
Luca Coelho
f673a193d5 iwlwifi: add Pu/PnJ/Th device values to differentiate them
Pu, PnJ and Th devices have different combinations of PCI ID, MAC ID
and RF IDs.  Use these to differentiate them and choose the correct
configuration.

This also includes a change from using soc cfg's for 0x2526
devices (PnJ/Th), which was incorrect.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.602bb33528cf.I3acacb07c69ed063c7f1ca78f2dce9b7b4ef3946@changeid
2020-03-17 21:10:45 +02:00
Luca Coelho
95939551e2 iwlwifi: add GNSS differentiation to the device tables
Devices that also include a GNSS module have different names, so add a
new device option to differentiate them, according to the values we
have in the modules section of the subsystem device ID.

Additionally, convert the two applicable devices to use this value
instead of hardcoded subsystem IDs.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.1f958e558d05.I45492bb57cbbeb4cc0ec84313bade4def7377a27@changeid
2020-03-17 21:10:45 +02:00
Luca Coelho
d6f2134a38 iwlwifi: add mac/rf types and 160MHz to the device tables
Add MAC ID, RF ID and the bit that tells us whether the device can
handle 160MHz bandwidth to the device struct.

This allows us to chose the correct structure and string depending on
these parameters.  Do so for all the 0x2526 devices we already moved
to the new table.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.a6bef6ee8fe1.I01f7a6f49aa60d2d61633a8a8b859015681eac5b@changeid
2020-03-17 21:10:45 +02:00
Luca Coelho
67eb556da6 iwlwifi: combine 9260 cfgs that only change names
All the 0x2526 devices are now in the new table, so we can start
reusing configurations and adding the strings independently to all of
them, reusing them when possible.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.88e3d47c42a8.I1bd37ae0d0f9f79732f03badf84d7d063993b73e@changeid
2020-03-17 21:10:45 +02:00
Luca Coelho
56ba371a52 iwlwifi: move the remaining 0x2526 configs to the new table
Now that we have the strings separate from the rest, we can move the
remaining 0x2526 devices to the new table in preparation to reuse the
configs.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200309091348.a7998f8d7507.I4be8776edb8c30416efc184c66f11add5eed06de@changeid
2020-03-17 21:10:45 +02:00
Lorenzo Bianconi
f40ac0f3d3 mt76: mt7615: introduce mt7663e support
Introduce support for mt7663e 802.11ac 2x2:2 chipset to mt7615 driver.

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:48:00 +01:00
Lorenzo Bianconi
8327cd8282 mt76: mt7615: get rid of sta_rec_wtbl data structure
Sobstitute sta_rec_wtbl data structure with tlv one

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:59 +01:00
Lorenzo Bianconi
c686a35c0e mt76: mt7615: introduce set_ba uni command
Introduce mt7615_mcu_uni_set_ba routine in order to add support
for mt7663e driver

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:59 +01:00
Sean Wang
138860679b mt76: mt7615: add more uni mcu commands
Introduce mt7615_mcu_uni_set_bss, mt7615_mcu_uni_set_dev and
mt7615_mcu_uni_set_beacon_offload uni mcu commands. This is a
preliminary patch to add mt7663e support

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:59 +01:00
Lorenzo Bianconi
af44ce4f47 mt76: mt7615: introduce set_bmc and st_sta for uni commands
Introduce mt7615_mcu_uni_set_bmc and mt7615_mcu_uni_set_sta routines for
mt7663e commands.

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:58 +01:00
Lorenzo Bianconi
323d7daad3 mt76: mt7615: introduce uni cmd command types
Introduce mcu uni command type. Uni commands rely on a stripped verions
of mt7615_mcu_txd data strutture. Split mt7615_mcu_txd_common and
mt7615_mcu_txd. Uni commands will be use by mt7663e driver

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:58 +01:00
Lorenzo Bianconi
5784e91a5a mt76: mt7615: introduce mt7615_init_mac_chain routine
Introduce mt7615_init_mac_chain routine to configure per band mac
register since new devices (e.g. mt7663e) do not support dbdc

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:57 +01:00
Lorenzo Bianconi
b3d95f0968 mt76: mt7615: introduce mt7615_eeprom_parse_hw_band_cap routine
Introduce mt7615_eeprom_parse_hw_band_cap routine in order to configure
supported band for mt7663e and mt7622 devices since they do not rely on
eeprom data to enable 2GHz/5GHz bands

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:57 +01:00
Lorenzo Bianconi
c321a3d7e3 mt76: mt7615: add mt7663e support to mt7615_mcu_set_eeprom
Extend mt7615_mcu_set_eeprom routine in order to be reused
adding mt7663e support to mt7615 driver

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:57 +01:00
Lorenzo Bianconi
9e6372c821 mt76: mt7615: add mt7663e support to mt7615_{driver,firmware}_own
Extend mt7615_driver_own and mt7615_firmware_own in order to reuse
them adding mt7663e support to mt7615 driver

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:56 +01:00
Lorenzo Bianconi
f82282efc0 mt76: mt7615: add mt7663e support to mt7615_reg_map
Introduce mt7663e support to mt7615_reg_map routine in order to reuse it
adding support for mt7663e driver

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:56 +01:00
Lorenzo Bianconi
94f83b66cd mt76: mt7615: introduce mt7615_register_map
In order to reuse mt7615 code adding support for mt7663e driver,
introduce mt7615e_reg_map since mt7663e and mt7615 rely on a
different base registers definitions.

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Co-developed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:55 +01:00
Lorenzo Bianconi
3b862bad34 mt76: mt7615: introduce MCU_FW_PREFIX for fw mcu commands
Currently fw commands rely on negative cmds since they need different
mcu msg metadata. Extend this approach introducing MCU_FW_PREFIX.
This is a preliminary patch to support new mt7663e firmware commands

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:55 +01:00
Lorenzo Bianconi
062c3699b9 mt76: mt7615: move more mcu commands in mt7615_mcu_ops data structure
Move mt7615_mcu_set_beacon_offload, mt7615_mcu_set_dev and
mt7615_mcu_set_bss routine in mt7615_mcu_ops data structure.
This is a preliminary patch to support mt7663 firmware

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:55 +01:00
Lorenzo Bianconi
adb2ed0e45 mt76: mt7615: rework mt7615_mcu_set_bss_info using skb APIs
Simplify mt7615_mcu_set_bss_info relying on mcu tlv helpers

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:54 +01:00
Lorenzo Bianconi
936fca1f08 mt76: mt7615: rely on skb API for mt7615_mcu_set_eeprom
Rely on skb API and avoid kmalloc the buffer in mt7615_mcu_set_eeprom
routine

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:54 +01:00
Lorenzo Bianconi
b4985ff18c mt76: mt7615: move mt7615_mcu_set_sta in mt7615_mcu_ops
Move mt7615_mcu_set_sta for fw version 1 and version 2 in mt7615_mcu_ops
data structure. This is a preliminary patch to properly support mt7663e
firmware.
Rework utility routines to rely on skb APIs for msg parsing

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:53 +01:00
Lorenzo Bianconi
99c457d902 mt76: mt7615: move mt7615_mcu_set_bmc to mt7615_mcu_ops
Move mt7615_mcu_set_bmc for fw version 1 and version 2 in
mt7615_mcu_ops data structure. This is a preliminary patch
to properly support mt7663e firmware.
Rework utility routines to rely on skb APIs for msg parsing

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:53 +01:00
Lorenzo Bianconi
6f4d7cc88c mt76: mt7615: add mt7615_mcu_ops data structure
Introduce mt7615_mcu_ops data structure in order to support multiple
mcu ops API.
Move mt7615_mcu_set_{tx,rx}_ba to mt7615_mcu_ops differentiating between
fw v1 and v2. This is a preliminary patch to properly support mt7663e
firmware.
Rework utility routines to rely on skb APIs for msg parsing

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:53 +01:00
Lorenzo Bianconi
f4d45fe29e mt76: mt7615: introduce mt7615_mcu_send_message routine
Introduce mt7615_mcu_send_message routine in order to allocate mcu skb
out of mcu sending routine. This approach is useful when the mcu
message is complicated and it is convenient to rely on skb buffer API

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:52 +01:00
Lorenzo Bianconi
3b64e41b13 mt76: always init to 0 mcu messages
Always initialize to 0 mcu messages since if they are not propely
configured they could hang the firmware.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:52 +01:00
Lorenzo Bianconi
2ee920c293 mt76: mt7615: introduce mt7615_init_device routine
Add mt7615_init_device routine in order to be reused adding support for
mt7663 in mt7615 driver

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:52 +01:00
Lorenzo Bianconi
0b3117e458 mt76: mt7615: cleanup fw queue just for mmio devices
In order to reuse mt7615_mcu_send_firmware routine adding support for
usb devices, clean fw hw queue just for mmio devices

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:51 +01:00
Lorenzo Bianconi
044a43256a mt76: mt7615: introduce mt7615_mcu_wait_response
Introduce mt7615_mcu_wait_response in order to be reused parsing mt7663u
mcu messages

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:51 +01:00
Lorenzo Bianconi
63f09b6b98 mt76: mt7615: introduce mt7615_mcu_fill_msg
Introduce mt7615_mcu_fill_msg routine to initialize mcu messages.
mt7615_mcu_fill_msg will be reused adding mt7663u support

Co-developed-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:47:50 +01:00
Chen Wandun
373954ef27 mt76: remove variable 'val' set but not used
Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/wireless/mediatek/mt76/mt76x0/phy.c: In function mt76x0_phy_rf_init:
drivers/net/wireless/mediatek/mt76/mt76x0/phy.c:1158:5: warning: variable val set but not used [-Wunused-but-set-variable]

Fixes: 10de7a8b4ab9 ("mt76x0: phy files")
Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Dan Carpenter
5ddffa1b62 mt76: mt7615: remove a stray if statement
This if statement was supposed to be deleted, but it wasn't.  It means
that we sometimes don't set the sensitivity correctly.

Fixes: 2cad515ece8a ("mt76: mt7615: add missing settings for simultaneous dual-band support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Felix Fietkau
e58f6e0625 mt76: mt76x02: reset MCU timeout counter earlier in watchdog reset
Ensure that MCU commands issued right after hardware reset are not dropped
and treated as failed.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Felix Fietkau
c984457b66 mt76: mt7615: fix monitor injection of beacon frames
When injecting beacon frames via monitor interface, they must not be sent to
the beacon hardware queue, because they don't follow normal hardware beacon tx
rules.
Fix sending them by adding a flag to mt7615_mac_write_txwi that selects the
beacon queue for tx, and use it only from mt7615_mcu_set_bcn.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Felix Fietkau
e9415009af mt76: mt7603: make dynamic sensitivity adjustment configurable via debugfs
In some cases it may be useful for debugging to disable this feature

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Felix Fietkau
633348f2ca mt76: mt7603: add upper limit for dynamic sensitivity minimum receive power
If the minimum power is raised too much, it can make it impossible for weaker
clients to connect, and there are some scenarios where the false detects will
not go down no matter how much the sensitivity is adjusted.
Fixes connectivity issues in some rare cases

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Felix Fietkau
1a7d3f4793 mt76: mt7615: fix antenna mask initialization in DBDC mode
Update wiphy available antenna mask, and fix chainmask setting on 3x3 hardware

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:59 +01:00
Lorenzo Bianconi
b2c4d95cb4 mt76: mt76u: rely only on data buffer for usb control messagges
Starting from commit 'a6bfb6d13f33 ("mt76: usb: use max packet length
for m76u_copy")' reg_val does not share memory with usb data buffer.
On non-coherent devices this approach can corrupt data pointer since data
and reg_val share the same cache-line, resulting in the following crash:

[  371.544901] CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 8042fbb0
[  371.558521] CPU: 0 PID: 11 Comm: kworker/u2:2 Not tainted 4.14.160 #0
[  371.565204] Workqueue: mt76u mt76u_deinit [mt76_usb]
[  371.570331] task: 83823ac0 task.stack: 8386c000
[  371.575004] $ 0   : 00000000 80590000 00000000 00000000
[  371.580407] $ 4   : 82edaad0 00000002 83823ac0 fffffff8
[  371.585810] $ 8   : fffffffd 0000fc00 8052da00 00000000
[  371.591212] $12   : 000b2285 ae53a1a9 00108845 89da44c4
[  371.596615] $16   : 82edaad0 82ed9d20 00001798 832edf00
[  371.602019] $20   : 00000000 8386dda8 80530000 fffffffe
[  371.607421] $24   : 8051d040 76274d1b
[  371.612824] $28   : 8386c000 8386dd88 82edaad4 830d4d50
[  371.618228] Hi    : 000000f7
[  371.621203] Lo    : 33333371
[  371.624196] epc   : 8042fbb0 __mutex_lock.isra.2+0x134/0x378
[  371.630043] ra    : 830d4d50 mt76u_deinit+0x418/0xa6c [mt76_usb]
[  371.636237] Status: 1000fc03KERNEL EXL IE
[  371.640557] Cause : 0080000c (ExcCode 03)
[  371.644696] BadVA : 00000000
[  371.647671] PrId  : 00019374 (MIPS 24Kc)
[  371.726123]  usbcore nls_base usb_common
[  371.730180] Process kworker/u2:2 (pid: 11, threadinfo=8386c000, task=83823ac0, tls=00000000)
[  371.738884] Stack : 833d009c 83210b4c 82ed8bc0 8386ddac 000001ff 8008ac50 8386ddac 83b74b00
[  371.747519]         82edaad4 00000000 83b74b48 83210c38 82edaad0 82ed9d20 00001798 832edf00
[  371.756157]         00000000 00000000 80530000 fffffffe 80530000 830d4d50 00000040 8389d850
[  371.764794]         8052d9d8 8389d850 8386de30 82ed9d20 8386de5f 831c27bc 833d48ec 8052d9d8
[  371.773431]         83823ac0 83823af0 82edab00 82ed9d20 8386de5f 831c5c30 00000000 8052d9a8
[  371.782069]         ...
[  371.784598] Call Trace:
[  371.787130] [<8042fbb0>] __mutex_lock.isra.2+0x134/0x378
[  371.792622] [<830d4d50>] mt76u_deinit+0x418/0xa6c [mt76_usb]
[  371.808546]
[  371.810920] ---[ end trace c62f0601f6730eb0 ]---
[  371.818101] Kernel panic - not syncing: Fatal exception
[  371.824420] Rebooting in 3 seconds..

Fix the issue relying only on data buffer to send/receive usb control messages

Fixes: a6bfb6d13f33 ("mt76: usb: use max packet length for m76u_copy")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:58 +01:00
Lorenzo Bianconi
2da7cc7dce mt76: mt76u: fix a possible memory leak in mt76u_init
Remove usb workqueue if mt76u_set_endpoints fails.

Fixes: 284efb473ef5 ("mt76: mt76u: rely on a dedicated stats workqueue")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:58 +01:00
Lorenzo Bianconi
44e8f8efd9 mt76: mt76u: loop over all possible rx queues in mt76u_rx_tasklet
Loop over all possible hw rx queues in mt76u_rx_tasklet since new
devices will report mcu events through mcu hw queue

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2020-03-17 17:13:58 +01:00