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2019-05-01mt76: reduce locking in mt76_dma_tx_cleanupFelix Fietkau
q->tail can be safely updated without locking, because there is no concurrent access. If called from outside of the tasklet (for flushing), the tasklet is always disabled. q->queued can be safely read without locking, as long as the decrement happens within the locked section. This patch allows cleaning up tx packets outside of the section that holds the queue lock for improved performance Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: use mac80211 txq schedulingFelix Fietkau
Performance improvement and preparation for adding airtime fairness support Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: use readl/writel instead of ioread32/iowrite32Felix Fietkau
Switching to readl/writel is faster because it gets rid of an unnecessary wrapper with extra checks. Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: fix tx power issuesFelix Fietkau
- tx power is stored in the channels after ieee80211_register_hw, so chan->orig_mpwr needs to be updated as well - for non-TSSI devices, mt76x2e needs to use a different target power value from the EEPROM - fix a rounding error in a few places (need to round up, not down) Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: introduce mt76_free_device routineLorenzo Bianconi
Move mt76_tx_free in mt76_free_device routine in order to unmap all txwi descriptors at module unload Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: remove queue variable from rx_taskletStanislaw Gruszka
Since now only mt76u_get_next_rx_entry use queue argument move it to this function. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: allocate urb and sg as linear dataStanislaw Gruszka
Alloc sg table at the end of urb structure. This will increase cache usage. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: remove unneded sg_init_tableStanislaw Gruszka
We already allocate with GFP_ZERO and sg marker is set later for both RX and TX. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: resue mt76u_urb_alloc for txStanislaw Gruszka
Add new rx_urb_alloc routine and reuse common urb_alloc for tx allocations. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: remove MT_RXQ_MAIN queue from mt76u_urb_allocStanislaw Gruszka
Get the RX queue inside mt76u_refill_rx. This will allow to reuse mt76u_urb_alloc for TX allocations. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: remove mt76u_buf and use urb directlyStanislaw Gruszka
Put urb pointer in mt76_queue_entry directly instead of mt76u_buf structure. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: move mt76u_buf->done to queue entryStanislaw Gruszka
mt76_queue_entry has alreay one bool variable, adding new one will not increase it's size. Removing ->done filed from mt76u_buf will allow to use urb directly in mt76usb code. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: remove mt76u_buf redundant filedsStanislaw Gruszka
Remove mt76u_buf->{len, buf} fields and operate on corresponding urb fields directly. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: use usb_dev private dataStanislaw Gruszka
Setup usb device private data. This allows to remove mt76u_buf->dev and simplify some routines as no longer we need to get usb device through usb interface. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: change mt76u_fill_rx_sg argumentsStanislaw Gruszka
We do not need to pass len and sglen to the function. Additionally pass gfp to control allocation context. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: remove rx_page_lockStanislaw Gruszka
We can not run mt76u_alloc_buf() concurently, rx_tasklet is stooped when mt76u_submit_rx_buffers(). We can remove rx_page_lock. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76usb: change mt76u_submit_bufStanislaw Gruszka
Remove unnecessery arguments and change the function name since is now used only for RX. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: enable AP mode for USBStanislaw Gruszka
Enable AP mode. For now without multi-vif support, this will require more testing and investigation. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: unify set_timStanislaw Gruszka
All mt76 drivers (now also USB drivers) require empty .set_tim callback. Add it to common mt76 module and use on all drivers. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02u: add mt76_release_buffered_framesStanislaw Gruszka
Create software MT_TXQ_PSD queue for USB and map it to MT_TXQ_VO since we do not have USB endpoint for PSD. This should make mt76_release_buffered_frames() work by sending released frames via MT_TXQ_VO. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: make beacon slots bigger for USBStanislaw Gruszka
Since we sent PS buffered frames via beacon memory we need to make beacon slots bigger. That imply we will also need to decrease number of slots as beacon SRAM memory is limited to 8kB. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02u: implement pre TBTT work for USBStanislaw Gruszka
Program beacons data and PS buffered frames on TBTT work for USB. We do not have MT_TXQ_PSD queue available via USB endpoints. The way we can send PS broadcast frames in timely manner before PS stations go sleep again is program them in beacon data area. Hardware do not modify those frames since TXWI is properly configured. mt76x02_mac_set_beacon() already handle this and free no longer used frames. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: disable HW encryption for group framesStanislaw Gruszka
This is required to sent multicast/broadcast frames in USB AP mode just after beacon. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02u: add sta_psStanislaw Gruszka
Add sta_ps callback but dont set WCID drop sicne registers for USB can not be accessed from tasklet context. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: generalize some mmio beaconing functionsStanislaw Gruszka
Move some TBTT mmio functions to mt76x02_beacon.c and create new ones in order to be reused by USB pre-TBTT. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02u: implement beacon_opsStanislaw Gruszka
Add implementation of beacon_ops for USB and exit function to stop the timer if running when device is removed. Still no actual work on pre tbtt event. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: introduce beacon_opsStanislaw Gruszka
Enabling/disableing TBTT and beacon will be diffrent for USB. Introduce beacon_ops to encapsulate that and implement it for MMIO. USB implementation is noop for now. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: add hrtimer for pre TBTT for USBStanislaw Gruszka
Add timer and work for pre TBTT for USB devices. For now code doesn't do anyting useful, just add hrtimer which synchronize with hardware MT_TBTT_TIMER. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76x02: introduce mt76x02_beacon.cStanislaw Gruszka
Move most of beaconing code into separate file and separate beacon initialization for USB and MMIO as pre TBTT implementation for USB will be different. Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: usb: reduce code indentation in mt76u_alloc_txLorenzo Bianconi
Improve code readability reducing code indentation in mt76u_alloc_tx Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt7603: core: do not use magic numbers in mt7603_reg_mapLorenzo Bianconi
Use register definitions instead of magic numbers in mt7603_reg_map Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt7603: remove mt7603_mcu_init routineLorenzo Bianconi
Remove mt7603_mcu_init since mcu.mutex has been already initialized in mt76_mmio_init. Run mt7603_load_firmware directly in mt7603_init_hardware Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: dma: add static qualifier to mt76_dma_tx_queue_skbLorenzo Bianconi
As already done for mt76_dma_tx_queue_skb_raw, add static qualifier to mt76_dma_tx_queue_skb and introduce mt76_tx_queue_skb in order to run mt76_dma_tx_queue_skb in driver code Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: introduce mt76_tx_info data structureLorenzo Bianconi
Add mt76_tx_info as auxiliary data structure to pass values to tx_prepare_skb pointer. This is a preliminary patch to add support for new chipsets (e.g. mt7615) Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: move skb dma mapping before running tx_prepare_skbLorenzo Bianconi
Move skb dma mapping before configuring txwi since new chipsets (mt7615) will need skb dma addresses in order to properly configure txwi Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: mmio: move mt76_insert_hdr_pad in mt76_dma_tx_queue_skbLorenzo Bianconi
Introduce tx_aligned4_skbs in mt76_driver_ops and move mt76_insert_hdr_pad in mt76_dma_tx_queue_skb. This is a preliminary patch in order to unify tx dma mapping for mt76x02 and new chipsets Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: move mt76x02_insert_hdr_pad in mt76-core moduleLorenzo Bianconi
Move mt76x02_insert_hdr_pad in m76-core and rename it in mt76_insert_hdr_pad in order to be used in mt76_dma_tx_queue_skb. This is a preliminary patch in order to properly support tx dma mapping for new chipsets (e.g. mt7615) Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: introduce mt76_txq_id field in mt76_queue_entryLorenzo Bianconi
Add mt76_txq_id field to mt76_queue_entry in order to properly track outstanding frames for mt7615 that relies on a single hw queue Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: introduce mt76_sw_queue data structureLorenzo Bianconi
Introduce mt76_sw_queue data structure in order to support new chipsets (e.g. mt7615) that have a shared hardware queue for all traffic identifiers. mt76_sw_queue will be used to track outstanding packets Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: remove mt76_queue dependency from tx_complete_skb function pointerLorenzo Bianconi
Remove mt76_queue dependency from tx_complete_skb function pointer and rely on mt76_tx_qid instead. Remove flush from tx_complete_skb signature. This is a preliminary patch to introduce mt76_sw_queue support Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: remove mt76_queue dependency from tx_prepare_skb function pointerLorenzo Bianconi
Remove mt76_queue dependency from tx_prepare_skb function pointer and rely on mt76_tx_qid instead. This is a preliminary patch to introduce mt76_sw_queue support Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: remove mt76_queue dependency from tx_queue_skb function pointerLorenzo Bianconi
Remove mt76_queue dependency from tx_queue_skb function pointer and rely on mt76_tx_qid instead. This is a preliminary patch to introduce mt76_sw_queue support Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: dma: move mt76x02_init_{tx,rx}_queue in mt76 moduleLorenzo Bianconi
Move mt76x02_init_tx_queue and mt76x02_init_rx_queue in mt76 module in order to be reused adding support for mt7603 driver and remove duplicated code. Squash mt76x02_init_tx_queue and mt76x02_init_rx_queue in mt76_dma_alloc_queue Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01mt76: mmio: move mt76x02_set_irq_mask in mt76 moduleLorenzo Bianconi
Move mt76x02_set_irq_mask in mt76 module in order to be reused adding support for mt7603 driver and remove duplicated code Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2019-05-01staging: kpc2000: fix up build problems with readq()Greg Kroah-Hartman
The 0-day system found a bunch of warnings for when readq() is not defined on the platform, so fix this by including the linux/io-64-nonatomic-lo-hi.h file which will fix up these issues. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-01staging: rtlwifi: move remaining phydm .h filesGreg Kroah-Hartman
The rtl8188eu driver uses the phydm .h files from the rtlwifi driver, but now that the rtlwifi driver is gone, it's silly to have a whole directory for just 2 .h files. So move these files into the rtl8188eu driver's directory so that it can be self-contained. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-01staging: rtlwifi: strip down phydm .h filesGreg Kroah-Hartman
The phydm .h files are used by another driver, but not all of the defines are used, so strip them down to their basic necessities before we move them out of this directory. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-01staging: rtlwifi: delete the staging driverGreg Kroah-Hartman
A "real" driver for this hardware is now in the wireless-drivers-next tree, to be merged in the next major kernel release, so this staging driver can now be deleted as it is not needed anymore. Note, 2 .h files remain for this driver, as they are referenced in a separate staging driver. That mess will be cleaned up in a follow-on patch. Cc: Ping-Ke Shih <pkshih@realtek.com> Cc: Tzu-En Huang <tehuang@realtek.com> Cc: Yan-Hsuan Chuang <yhchuang@realtek.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Brian Norris <briannorris@chromium.org> Cc: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-01ACPI / property: fix handling of data_nodes in acpi_get_next_subnode()Pierre-Louis Bossart
When the DSDT tables expose devices with subdevices and a set of hierarchical _DSD properties, the data returned by acpi_get_next_subnode() is incorrect, with the results suggesting a bad pointer assignment. The parser works fine with device_nodes or data_nodes, but not with a combination of the two. The problem is traced to an invalid pointer used when jumping from handling device_nodes to data nodes. The existing code looks for data nodes below the last subdevice found instead of the common root. Fix by forcing the acpi_device pointer to be derived from the same fwnode for the two types of subnodes. This same problem of handling device and data nodes was already fixed in a similar way by 'commit bf4703fdd166 ("ACPI / property: fix data node parsing in acpi_get_next_subnode()")' but broken later by 'commit 34055190b19 ("ACPI / property: Add fwnode_get_next_child_node()")', so this should probably go to linux-stable all the way to 4.12 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2019-04-30libfs: document simple_get_link()Eric Biggers
Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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