There has been a coding error in rtl8821ae since it was first introduced,
namely that an 8-bit register was read using a 16-bit read in
_rtl8821ae_dbi_read(). This error was fixed with commit 40b368af4b
("rtlwifi: Fix alignment issues"); however, this change led to
instability in the connection. To restore stability, this change
was reverted in commit b8b8b16352 ("rtlwifi: rtl8821ae: Fix connection
lost problem").
Unfortunately, the unaligned access causes machine checks in ARM
architecture, and we were finally forced to find the actual cause of the
problem on x86 platforms. Following a suggestion from Pkshih
<pkshih@realtek.com>, it was found that increasing the ASPM L1
latency from 0 to 7 fixed the instability. This parameter was varied to
see if a smaller value would work; however, it appears that 7 is the
safest value. A new symbol is defined for this quantity, thus it can be
easily changed if necessary.
Fixes: b8b8b16352 ("rtlwifi: rtl8821ae: Fix connection lost problem")
Cc: Stable <stable@vger.kernel.org> # 4.14+
Fix-suggested-by: Pkshih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: James Cameron <quozl@laptop.org> # x86_64 OLPC NL3
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
With the RTL8822BE and later devices, the number of interrupt vectors
has grown from 2 to 4. At this point, saving and passing those vectors
in a struct makes more sense than using individual scaler variables.
In two of the drivers, code to process the second of the interrupt
registers was included, but commented out. This patch removes those
useless sections.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The calculation of ppsc->last_wakeup_time is not y2038-safe, but
the variable is not used at all, so we can simply drop it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
do_gettimeofday() is deprecated and slower than necessary for the purpose
of reading the seconds. This changes rtl_op_suspend/resume to use
ktime_get_real_seconds() instead, which is simpler and avoids confusion
about whether it is y2038-safe or not.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
We set rtlhal->last_suspend_sec to an uninitialized stack variable,
but unfortunately gcc never warned about this, I only found it
while working on another patch. I opened a gcc bug for this.
Presumably the value of rtlhal->last_suspend_sec is not all that
important, but it does get used, so we probably want the
patch backported to stable kernels.
Cc: stable@vger.kernel.org
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82839
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
8822be checks H2CQ by int_d, so we extend to four ISR.
Also, irq_mask is extended to four.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Clean up unused cur_rfstate variables in rtl8188ee, rtl8723ae, rtl8723be
and rtl8821ae.
Signed-off-by: Christos Gkekas <chris.gekas@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
- Add new parameter "is_bw_update" to control if current bandwidth setting
is updated to FW RA.
- After this commit, we keep the same setting as before.
- Later, bandwidth update in watchdog is changed to false for 8822BE.
Signed-off-by: Tsang-Shian Lin <thlin@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
1. Both 32-bit and 64-bit use the same TX/RX buffer desc layout
2. Extend set_desc() and get_desc() to set and get 64-bit address
3. Remove directive DMA_IS_64BIT
4. Add module parameter to turn on 64-bit dma
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
In commit 40b368af4b ("rtlwifi: Fix alignment issues"), the read
of REG_DBI_READ was changed from 16 to 8 bits. For unknown reasonsi
this change results in reduced stability for the wireless connection.
This regression was located using bisection.
Fixes: 40b368af4b ("rtlwifi: Fix alignment issues")
Reported-and-tested-by: James Cameron <quozl@laptop.org>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> # 4.11+
Cc: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The cast here is wrong. We want to cast the pointer but we accidentally
do a no-op cast of the value. We normally want to set us_nav_upper to
WIFI_NAV_UPPER_US (30000) but because of this bug we instead set it to
184 on little endian systems and 0 on big endian ones.
Fixes: 3c05bedb5f ("Staging: rtl8812ae: Add Realtek 8821 PCI WIFI driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This patch fix some spelling typos found in printk.
[jkosina@suse.cz: drop arch/arm64/kernel/hibernate.c that was already
in place]
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Two additional preset responses are added to the reserved page on the
wifi device.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
In commit 6773386f97 ("rtlwifi: rtl8192c-common: Fix "BUG: KASAN:"),
a BUG detected when CONFIG_KASAN=y was fixed by reordering the layouts
of struct rtl_pci_priv, and struct rtl_usb_priv so that the variables
used by both PCI and USB drivers have the same offsets in both structs.
The better fix of relocating the critical variables into struct rtl_priv
was deferred as these changes do not have to be applied to stable
kernels.
This change also removes CamelCase variables with pLed0 => pled0.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The addresses of Wlan NIC registers are natural alignment, but some
drivers have bugs. These are evident on platforms that need natural
alignment to access registers. This change contains the following:
1. Function _rtl8821ae_dbi_read() is used to read one byte from DBI,
thus it should use rtl_read_byte().
2. Register 0x4C7 of 8192ee is single byte.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This is a step toward eliminating the RT_TRACE macros. Those calls that
have DBG_EMERG as the level are always logged, and they represent error
conditions, thus they are replaced with pr_err().
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This macro can be replaced with WARN_ONCE. In addition to using a
standard debugging macro for these critical errors, we also get
a stack dump.
In rtl8821ae/hw.c, a senseless comment was removed, and an incorrect
indentation was fixed.
This patch also fixes two places in each of rtl8192ee, rtl8723be,
and rtl8821ae where the logical condition was incorrect.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Help along debugging by showing what switch/case variable is not
being processed in these messages.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
The driver for RTL8821AE chips is converted to use the common routine
for getting the hardware information.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
RT_TRACE does not add a newline to the end of a message and always
emits at KERN_DEBUG so these are susceptible to message interleaving
from other processes without the newline.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
There are nine copies of the _rtl88ee_read_adapter_info() function,
and most but not all of them cause a build warning in some configurations:
rtl8192de/hw.c: In function '_rtl92de_read_adapter_info':
rtl8192de/hw.c:1767:12: error: 'hwinfo' may be used uninitialized in this function [-Werror=maybe-uninitialized]
rtl8723ae/hw.c: In function '_rtl8723e_read_adapter_info.constprop':
rtlwifi/rtl8723ae/hw.c:1654:12: error: 'hwinfo' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The problem is that when rtlefuse->epromtype is something other than
EEPROM_BOOT_EFUSE, the rest of the function uses undefined data, resulting
in random behavior later.
Apparently, in some drivers, the problem was already found and fixed
but the fix did not make it into the others.
This picks one approach to deal with the problem and applies identical
code to all 9 files, to simplify the later consolidation of those.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This patch fix spelling typos found in printk
within various part of the kernel sources.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Smatch reports the following warning:
CHECK drivers/net/wireless/realtek/rtlwifi/rc.c
drivers/net/wireless/realtek/rtlwifi/rc.c:144 _rtl_rc_rate_set_series() warn: impossible condition '(wireless_mode == 256) => (0-255 == 256)'
This warning arises because commit acc6907b87a9 ("rtlwifi: Fix warning
from ieee80211_get_tx_rates() when using 5G") now checks the wireless
mode for WIRELESS_MODE_AC_ONLY (BIT(8)) in _rtl_rc_rate_set_series().
As a result, all quantities used to store the wireless mode must be u16.
This patch also reorders struct rtl_sta_info to save a little space.
Fixes: d76d65fd26 ("rtlwifi: fix broken VHT support")
Reported-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
There are several copies of the 5G channel tables in this driver. These
are removed so that the tables in the core will be used. This change
also removes a useless message of "Channel 163 in Group not found".
The number of possible 5G channels was reduced from 54 to a better
value of 49 during the conversion.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
In commit 54328e6404 ("rtlwifi: rtl8821ae: Fix system lockups on boot"),
an attempt was made to fix a regression introduced in commit 1277fa2ab2
("rtlwifi: Remove the clear interrupt routine from all drivers").
Unfortunately, there were logic errors in that patch that prevented
affected boxes from booting even after that patch was applied.
The actual cause of the original problem is unknown as none of the
developers have systems that are affected.
Fixes: 54328e6404 ("rtlwifi: rtl8821ae: Fix system lockups on boot")
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [V4.1+]
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
* using netdev carrier state
* add and rework some cfg80211 callbacks mainly for AP mode
* use devcoredump when triggered by firmware event
realtek
* create new directory drivers/net/wireless/realtek/ for all realtek
drivers, not visible to users (no kconfig changes etc)
* add rtl8xxxu, a new mac80211 driver for RTL8723AU, RTL8188CU,
RTL8188RU, RTL8191CU, RTL8192CU and hopefully more in the future
ath10k
* add board 2 API support for automatically choosing correct board file
* data path optimisations
* disable PCI power save for qca988x and QCA99x0 due to interop reasons
wil6210
* BlockAckReq support
* firmware crashdump using devcoredump
* capture all frames with sniffer
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Merge tag 'wireless-drivers-next-for-davem-2015-10-27' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
here's a bigger pull request for 4.4. The diffstat looks scary as we
created a new directory realtek for all realtek drivers. In the future
I'm planning to create similar directories for all vendors, currently we
just have ath, mediatek and realtek. This change has been in linux-next
for a couple of weeks so it should be safe, but of course you never
know.
There's also a new driver rtl8xxxu for few realtek USB devices. This
just made it to the last linux-next build.
Otherwise there's nothing really special, more info below. If time
permits, and it's ok for you, I'm hoping to send you a one more pull
request this week.
brcmfmac
* using netdev carrier state
* add and rework some cfg80211 callbacks mainly for AP mode
* use devcoredump when triggered by firmware event
realtek
* create new directory drivers/net/wireless/realtek/ for all realtek
drivers, not visible to users (no kconfig changes etc)
* add rtl8xxxu, a new mac80211 driver for RTL8723AU, RTL8188CU,
RTL8188RU, RTL8191CU, RTL8192CU and hopefully more in the future
ath10k
* add board 2 API support for automatically choosing correct board file
* data path optimisations
* disable PCI power save for qca988x and QCA99x0 due to interop reasons
wil6210
* BlockAckReq support
* firmware crashdump using devcoredump
* capture all frames with sniffer
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Now that a new mac80211-based driver for Realtek devices has been submitted,
it is time to reorganize the directories. Rather than having directories
rtlwifi and rtl818x be in drivers/net/wireless/, they will now be in
drivers/net/wireless/realtek/. This change simplifies the directory
structure, but does not result in any configuration changes that are
visable to the user.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Larry Finger