- 07 Dec, 2023 4 commits
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Chia-Yuan Li authored
To diagnose the reason why firmware or hardware get abnormal, add to dump MAC registers related to counters and interrupt masks. With these values, people can classify problems and check if registers values are unexpected, and then correct them. However, it could possible false alarm because firmware triggers this SER event by wrong conditions that we should correct it at firmware or register settings. In field, SER might happen under special conditions, and very hard to happen again, so dump lots of registers to provide rich information to catch the problem. Signed-off-by:
Chia-Yuan Li <leo.li@realtek.com> Signed-off-by:
Zong-Zhe Yang <kevin_yang@realtek.com> Signed-off-by:
Ping-Ke Shih <pkshih@realtek.com> Signed-off-by:
Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20231204080751.15354-5-pkshih@realtek.com
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Ping-Ke Shih authored
To activate SER (system error recovery) in firmware, we have to configure IMR to trigger interrupts, and then SER can check registers to know if it need to reset hardware or notify driver to re-configure whole settings. Signed-off-by:
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Zong-Zhe Yang authored
Extend FW program counter dump for Wi-Fi 7 chip. They poll different addresses. Signed-off-by:
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Zong-Zhe Yang authored
RTL8922A FW supports CRASH_TRIGGER feature from v0.34.30.0. After it, debugfs fw_crash can accept type 1 on RTL8922A to trigger firmware crash and verify L2 recovery. Besides, RTL8922A sync address offset of reserved payload engine. And, SER (system error recovery) tweaks conversion from WCPU address to indirect access address for RTL8922A. The new conversion works for all supported chips. Signed-off-by:
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- 06 Dec, 2023 2 commits
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Johannes Berg authored
This is just a collection of data and we only read it, so make it const. Signed-off-by:Johannes Berg <johannes.berg@intel.com>
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Johannes Berg authored
This function has so many arguments already, before adding yet another one, refactor it to take a struct instead. Signed-off-by:
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- 01 Dec, 2023 25 commits
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Chih-Kang Chang authored
In concurrent mode, when STA interface is scanning, it causes AP interface TX beacon on wrong channel. We modified it to scan with the operating channel when one of the interfaces is already connected. Additionally, STA interface need to stop scan when AP interface is starting to avoid TX beacon on wrong channel. Finally, AP interface need to stop TX beacon when STA interface is scanning and switching to non-OP channel,This prevent other device to get beacons on wrong channel. Signed-off-by:
Chih-Kang Chang <gary.chang@realtek.com> Signed-off-by:
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Chih-Kang Chang authored
We add a scanning check to avoid entering IPS after ROC (remain on channel) during scanning. Additionally, When P2P scanning, the flow is `1. p2p_listen step` and `2. configure filter` and `3. p2p_scan starts` in wpas, but in kernel, cfg80211 uses another workqueue to notify driver the filter change, so sometimes we see (1 > 3 > 2), that will cause Rx filter related to scan to be cleared. Therefore, we add a scanning check when configure filter to avoid scan results to be filtered. Finally, we cancel the ROC delayed workqueue before entering ROC to avoid entering twice, which might cause leaving ROC too early. Signed-off-by:
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Po-Hao Huang authored
The interval between sending each probe request is regulated. Before this patch, some packets are not sent out properly because of our HW limit. Extend the 6 GHz channel dwell time to cope with this. Signed-off-by:
Po-Hao Huang <phhuang@realtek.com> Signed-off-by:
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Po-Hao Huang authored
The attempt to enter power save mode might fail if there are still beacons pending in the queue. This sometimes happens after stopping P2P GO or AP mode. Extend stop AP function and flush all beacons to resolve this. Signed-off-by:
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Stanislaw Gruszka authored
We can run PCI/MMIO devices together with USB devices in the system. Make watchdog parameter per device to avoid situation when plugin USB device change modparam_watchdog for PCI/MMIO device. Signed-off-by:
Stanislaw Gruszka <stf_xl@wp.pl> Tested-by:
Shiji Yang <yangshiji66@outlook.com> Signed-off-by:
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Ilpo Järvinen authored
Neither vendorid nor deviceid in the struct mp_adapter is used so remove them. Signed-off-by:
Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by:
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Ilpo Järvinen authored
The rtlwifi driver comes with a number of PCI related defines that are unused and many would be provided by PCI core anyway if they'd be needed again. Similarly, the struct rtl_pci_capabilities_header is unused and no driver should come up their own way to access PCI Capabilities anyway. Remove the unused/duplicated PCI related defines and struct. Signed-off-by:
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Ilpo Järvinen authored
_rtl8821ae_clear_pci_pme_status() accesses the upper byte of the Power Management Control/Status register (PMCS) with literal 5 offset. Access the entire PMCS register using defines from pci_regs.h to improve code readability. While at it, remove the obvious comment and tweak debug prints slightly to not sound misleading. Signed-off-by:
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Ilpo Järvinen authored
Add local variable pdev to shorten rtlpci->pdev. Signed-off-by:
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Ilpo Järvinen authored
Instead of open coding the capability structure search, find the PM Capability using pci_find_capability(). While at it, rename the generic 'cap_pointer' to 'pm_cap' which makes the intent of the code more obvious. Signed-off-by:
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Ilpo Järvinen authored
Check if PM Capability does not exists and return early which follows the usual error handling pattern. Signed-off-by:
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Ilpo Järvinen authored
BIT(7) (PME_Status) is first checked and then set unnecessarily. Remove the unnecessary setting for the bit that is already on and adjust the comment related to it. Signed-off-by:
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Ilpo Järvinen authored
The rtlwifi driver accesses PCIe capabilities through custom config offsets. Convert the accesses to use the normal PCIe capability accessors. Signed-off-by:
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Ilpo Järvinen authored
The rtlwifi driver comes with custom code to write into PCIe Link Control register. RMW access for the Link Control register requires locking that is already provided by the standard PCIe capability accessors. Convert the custom RMW code writing into LNKCTL register to standard RMW capability accessors. The accesses are changed to cover the full LNKCTL register instead of touching just a single byte of the register. Fixes: 0c817338 ("rtl8192ce: Add new driver") Cc: stable@vger.kernel.org Signed-off-by:
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Ilpo Järvinen authored
Ever since introduction in the commit 0c817338 ("rtl8192ce: Add new driver") the rtlwifi code has, according to comments, attempted to disable/enable ASPM of the upstream bridge by writing into its LNKCTL register. However, the code has never been correct because it performs the writes to the device instead of the upstream bridge. Worse yet, the offset where the PCIe capabilities reside is derived from the offset of the upstream bridge. As a result, the write will use an offset on the device that does not relate to the LNKCTL register making the ASPM disable/enable code outright dangerous. Because of those problems, there is no indication that the driver needs disable/enable ASPM on the upstream bridge. As the Capabilities offset is not correctly calculated for the write to target device's LNKCTL register, the code is not disabling/enabling device's ASPM either. Therefore, just remove the upstream bridge related ASPM disable/enable code entirely. The upstream bridge related ASPM code was the only user of the struct mp_adapter members num4bytes, pcibridge_pciehdr_offset, and pcibridge_linkctrlreg so those are removed as well. Note: This change does not remove the code related to changing the device's ASPM on purpose (which is independent of this flawed code related to upstream bridge's ASPM). Suggested-by:
Bjorn Helgaas <bhelgaas@kernel.org> Fixes: 0c817338 ("rtl8192ce: Add new driver") Fixes: 886e14b6 ("rtlwifi: Eliminate raw reads and writes from PCIe portion") Cc: stable@vger.kernel.org Signed-off-by:
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Martin Blumenstingl authored
Lukas reports skb_over_panic errors on his Banana Pi BPI-CM4 which comes with an Amlogic A311D (G12B) SoC and a RTL8822CS SDIO wifi/Bluetooth combo card. The error he observed is identical to what has been fixed in commit e967229e ("wifi: rtw88: sdio: Check the HISR RX_REQUEST bit in rtw_sdio_rx_isr()") but that commit didn't fix Lukas' problem. Lukas found that disabling or limiting RX aggregation works around the problem for some time (but does not fully fix it). In the following discussion a few key topics have been discussed which have an impact on this problem: - The Amlogic A311D (G12B) SoC has a hardware bug in the SDIO controller which prevents DMA transfers. Instead all transfers need to go through the controller SRAM which limits transfers to 1536 bytes - rtw88 chips don't split incoming (RX) packets, so if a big packet is received this is forwarded to the host in it's original form - rtw88 chips can do RX aggregation, meaning more multiple incoming packets can be pulled by the host from the card with one MMC/SDIO transfer. This Depends on settings in the REG_RXDMA_AGG_PG_TH register (BIT_RXDMA_AGG_PG_TH limits the number of packets that will be aggregated, BIT_DMA_AGG_TO_V1 configures a timeout for aggregation and BIT_EN_PRE_CALC makes the chip honor the limits more effectively) Use multiple consecutive reads in rtw_sdio_read_port() and limit the number of bytes which are copied by the host from the card in one MMC/SDIO transfer. This allows receiving a buffer that's larger than the hosts max_req_size (number of bytes which can be transferred in one MMC/SDIO transfer). As a result of this the skb_over_panic error is gone as the rtw88 driver is now able to receive more than 1536 bytes from the card (either because the incoming packet is larger than that or because multiple packets have been aggregated). In case of an receive errors (-EILSEQ has been observed by Lukas) we need to drain the remaining data from the card's buffer, otherwise the card will return corrupt data for the next rtw_sdio_read_port() call. Fixes: 65371a3f ("wifi: rtw88: sdio: Add HCI implementation for SDIO based chipsets") Reported-by:
Lukas F. Hartmann <lukas@mntre.com> Closes: https://lore.kernel.org/linux-wireless/CAFBinCBaXtebixKbjkWKW_WXc5k=NdGNaGUjVE8NCPNxOhsb2g@mail.gmail.com/Suggested-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by:
Ulf Hansson <ulf.hansson@linaro.org> Acked-by:
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Ping-Ke Shih authored
Add functions to configure HCI, DMAC (data MAC), DLE (data link engine), HFC (HCI flow control), PLE (payload engine) and etc for WiFi 7 chips. Signed-off-by:
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Ping-Ke Shih authored
To share flow with WiFi 7 chips, abstract functions related hardware engines and their quota, so use pointer to access them. This doesn't change logic at all. Signed-off-by:
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Ping-Ke Shih authored
WiFi 7 chips will use the same functionalities but different registers to control hardware components, so move these stuff into functions, and then we can implement these for WiFi 7 chips later. This patch doesn't change logic. Signed-off-by:
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Zong-Zhe Yang authored
This function, currently called by WoWLAN flow, polls until specific HW queues are empty. The polling bit definitions are not totally the same between WiFi 6 and 7 chips. In addition, the check conditions are also a little different. So, we differentiate the implementations according to chip gen. Signed-off-by:
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Zong-Zhe Yang authored
In queue empty check, one group contains 32 queues. And, the two elements, wde_qempty_acq_num and wde_qempty_mgq_sel, are number of group and select of group. To avoid confusing them with queue number and queue selection, we refine their naming. (don't change logic at all) Signed-off-by:
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Ping-Ke Shih authored
DLE stands for Double Link Engine that is used to maintain buffer page. To avoid linking to wrong pages, we check the used page size during initialization and stop driver probe if the used size is unexpected. Currently, we check the page size used by PLE (payload engine) and WDE (WiFi descriptor engine). For coming WiFi 7 chips, additional reserved size is added for BB as buffer to run LA mode, so add and check the reserved size as well. Signed-off-by:
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Ping-Ke Shih authored
The reserved quota of DLE (data link engine) is used for processing next packet. Add this to get quota number, and then WiFi 7 chips can use them. Signed-off-by:
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Ping-Ke Shih authored
Define 8922A buffer quota that are used by HCI control flow, payload engine, descriptor engine and etc for operation modes, such as SCC (single channel concurrence) and download firmware. Since WiFi 7 chips has more buffer classifications, add fields and struct according to design. Signed-off-by:
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Justin Stitt authored
strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. Based on the deliberate `sizeof(dest) ... - 1` pattern we can see that both dump_info->dev_human_readable and dump_info->bus_human_readable are intended to be NUL-terminated. Moreover, since this seems to cross the file boundary let's NUL-pad to ensure no behavior change. strscpy_pad() covers both the NUL-termination and NUL-padding, let's use it. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by:
Justin Stitt <justinstitt@google.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
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- 30 Nov, 2023 9 commits
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Ping-Ke Shih authored
The wrapper of rtw89_debug() is unnecessary, so just remove it. Signed-off-by:
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Ping-Ke Shih authored
A dynamic mechanism is usually an algorithm to adjust registers to adapt to different environment every two seconds. In field, it could get unexpected result, so we need to stop it and adjust registers manually, and then fine tune the algorithm. To stop mechanisms to assist debugging, add a debugfs entry shown as Disabled DM: 0x1 [0] DYNAMIC_EDCCA: X Signed-off-by:
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Yi-Chen Chen authored
Add dynamic mechanism EDCCA (Energy Detection Clear Channel Assessment) in track work. Using a fixed-value threshold will make EDCCA particularly sensitive and cause failure to transmit under certain circumstances. Therefore, the threshold is dynamically adjusted to make EDCCA suitable for any situation. However, in some cases, we will adjust the EDCCA threshold to the highest level so that urgent transmissions can be performed successfully, such as scanning. Finally, in order to observe the EDCCA report in time, add the EDCCA perIC register macro and EDCCA HW report analysis. EDCCA logs can be displayed by using the EDCCA debug mask. Signed-off-by:
Yi-Chen Chen <jamie_chen@realtek.com> Signed-off-by:
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Ping-Ke Shih authored
The coming dynamic mechanism of EDCCA adjustment will add a function to dump registers to reflect status. However, if we are not debugging the mechanism, we don't print anything, so avoid reading registers by checking debug mask to reduce IO. Signed-off-by:
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Su Hui authored
Clang static checker warns: drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c:184:49: The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'u32'. [core.UndefinedBinaryOperatorResult] If the value of the right operand is negative or is greater than or equal to the width of the promoted left operand, the behavior is undefined.[1][2] For example, when using different gcc's compilation optimization options (-O0 or -O2), the result of '(u32)data << 32' is different. One is 0, the other is old value of data. Let _rtl8821ae_phy_calculate_bit_shift()'s return value less than 32 to fix this problem. Warn if bitmask is zero. [1] https://stackoverflow.com/questions/11270492/what-does-the-c-standard-say-about-bitshifting-more-bits-than-the-width-of-type [2] https://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf Fixes: 21e4b072 ("rtlwifi: rtl8821ae: Move driver from staging to regular tree") Signed-off-by:
Su Hui <suhui@nfschina.com> Acked-by:
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Su Hui authored
Clang static checker warns: Value stored to 'v1' is never read [deadcode.DeadStores] Value stored to 'channel' is never read [deadcode.DeadStores] Remove them to save some place. Signed-off-by:
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Ilpo Järvinen authored
Replace literal 0x7f with PCI_HEADER_TYPE_MASK. Signed-off-by:
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Lukas Bulwahn authored
Commit 4b478bf6 ("wifi: libertas: drop 16-bit PCMCIA support") reworks the dependencies for config LIBERTAS, and adds alternative dependencies for USB, SDIO and SPI. The config option SDIO however does not exist in the kernel tree. It was probably intended to refer to the config option MMC, which represents "MMC/SD/SDIO card support" and is used as dependency by various other drivers that use SDIO. Fix the dependency to the config option MMC for declaring the requirement on provision of SDIO support. Fixes: 4b478bf6 ("wifi: libertas: drop 16-bit PCMCIA support") Signed-off-by:
Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Ping-Ke Shih authored
Remove unnecessary wrapper of rtw_dbg(), and just call it directly. Signed-off-by:
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