instead of having a tracer that can only trace command completions,
let's promote this tracer so it can trace and decode any TRB.
With that, it will be easier to extrapolate the lifetime of any TRB
which might help debugging certain issues.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we just provide a helper to convert completion code to string, we can
combine all debugging messages into a single print.
[keep the old debug messages, for warn and grep -Mathias]
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
xhci_unmap_td_bounce_buffer() already checks for a valid td->bounce_seg
and bails out early if that's invalid. There's no need to check for this
twice.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
By extracting xhci_td_cleanup() from finish_td(), code before clearer
and easier to follow.
There are no functional changes with this patch. It's merely a cleanup.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
no functional changes. Simple cleanup to make sure variables are ordered
in a 'reverse christmas tree' fashion. While at that, also remove an
obsolete comment which doesn't apply anymore.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Instead of having several return points, let's use a local variable and
a single place to return. This makes the code slightly easier to read.
[set ret = IRQ_HANDLED in default working case -Mathias]
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cleanup only. This patch is a mechaninal rename to make sure our macros
for TRB completion codes match what the specification uses to refer to
such errors. The idea behind this is that it makes it far easier to grep
the specification and match it with implementation.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When calling xhci_dbg_regs() we actually _do_ want to know XHCI's
version. This might help figure out why certain problems only happen
in some cases.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In case 'quirk-broken-port-ped' property is passed in via device property,
we should enable the corresponding BROKEN_PED quirk flag for XHCI core.
[rogerq@ti.com] Updated code from platform data to device property
and added DT binding.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some devices from Texas Instruments [1] suffer from
a silicon bug where Port Enabled/Disabled bit
should not be used to silence an erroneous device.
The bug is so that if port is disabled with PED
bit, an IRQ for device removal (or attachment)
will never fire.
Just for the sake of completeness, the actual
problem lies with SNPS USB IP and this affects
all known versions up to 3.00a. A separate
patch will be added to dwc3 to enabled this
quirk flag if version is <= 3.00a.
[1] - AM572x Silicon Errata http://www.ti.com/lit/er/sprz429j/sprz429j.pdf
Section i896— USB xHCI Port Disable Feature Does Not Work
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The second try was a workaround for (what we thought was) command
ring failing to stop in the first place. But this turns out to be
due to the race that we have fixed(see "xhci: Fix race related to
abort operation"). With that fix, it is time to remove the second
try.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A counter was used to find out if the stop endpoint completion raced with
the stop endpoint timeout timer. This was needed in case the stop ep
completion failed to delete the timer as it was running on anoter cpu.
The EP_STOP_CMD_PENDING flag was not enough as a new stop endpoint command
may be queued between the command completion and timeout function, which
would set the flag back.
Instead of the separate counter that was used we can detect the race by
checking both the STOP_EP_PENDING flag and timer_pending in the timeout
function.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We don't want to confuse halted and stalled endpoint states with
a flag indicating we are waiting for a stop endpoint command to
finish or timeout
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The 'isnew' variable in 'sddr09_write_lba' function is set but never
used.
This has been detected by building the driver with W=1:
drivers/usb/storage/sddr09.c: In function ‘sddr09_write_lba’:
drivers/usb/storage/sddr09.c:873:17: warning: variable ‘isnew’ set but
not used [-Wunused-but-set-variable]
int i, result, isnew;
^
Signed-off-by: Augusto Mecking Caringi <augustocaringi@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Declare musb_hdrc_config structures as const as they are only stored in
the config field of a musb_hdrc_platform_data structure. This field is of
type const, so musb_hdrc_config structures having this property can be
made const too.
Done using Coccinelle:
@r disable optional_qualifier@
identifier x;
position p;
@@
static struct musb_hdrc_config x@p={...};
@ok@
struct musb_hdrc_platform_data pdata;
identifier r.x;
position p;
@@
pdata.config=&x@p;
@bad@
position p != {r.p,ok.p};
identifier r.x;
@@
x@p
@depends on !bad disable optional_qualifier@
identifier r.x;
@@
+const
struct musb_hdrc_config x;
File size before:
text data bss dec hex filename
1212 338 0 1550 60e drivers/usb/musb/jz4740.o
File size after:
text data bss dec hex filename
1268 290 0 1558 616 drivers/usb/musb/jz4740.o
File size before:
text data bss dec hex filename
6151 333 16 6500 1964 drivers/usb/musb/sunxi.o
File size after:
text data bss dec hex filename
6215 269 16 6500 1964 drivers/usb/musb/sunxi.o
File size before:
text data bss dec hex filename
3668 864 0 4532 11b4 drivers/usb/musb/ux500.o
File size after:
text data bss dec hex filename
3724 808 0 4532 11b4 drivers/usb/musb/ux500.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove legacy DWC2_G_P_LEGACY_TX_FIFO_SIZE array for TX FIFOs.
Update dwc2_set_param_tx_fifo_sizes function to calculate
and assign default average FIFO depth to each member of
g_tx_fifo_size array. Total FIFO size, EP Info block's size,
FIFO operation mode and device operation mode are taken into
consideration during the calculation.
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Sevak Arakelyan <sevaka@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. Fix up the 100ms delays here passing the adjusted "min"
value to msleep(). This helps reduce the load on the hrtimer subsystem.
Link: http://lkml.org/lkml/2017/1/11/377
Fixes: commit 2938fc63e0 ("usb: dwc2: Properly account for the force mode delays")
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Basically when plugging in various cables in different orders, I'm
occasionally seeing the following BUG splat:
[ 86.215403] BUG: scheduling while atomic: kworker/u16:2/53/0x00000002
[ 86.219164] usb 1-1: USB disconnect, device number 9
[ 86.226845] Preemption disabled at:[ 86.230218]
[<ffffff8008673558>] dwc2_conn_id_status_change+0x120/0x250
[ 86.236894] CPU: 0 PID: 53 Comm: kworker/u16:2 Tainted: G W
4.9.0-rc8-00051-gd5a7979-dirty #1702
[ 86.246836] Hardware name: HiKey Development Board (DT)
[ 86.252100] Workqueue: dwc2 dwc2_conn_id_status_change
[ 86.257279] Call trace:
[ 86.259771] [<ffffff8008087c28>] dump_backtrace+0x0/0x1a0
[ 86.265210] [<ffffff8008087ddc>] show_stack+0x14/0x20
[ 86.270308] [<ffffff80084343f0>] dump_stack+0x90/0xb0
[ 86.275401] [<ffffff80080d8d94>] __schedule_bug+0x6c/0xb8
[ 86.280841] [<ffffff8008a07220>] __schedule+0x4f8/0x5b0
[ 86.286099] [<ffffff8008a073e8>] schedule+0x38/0xa0
[ 86.291017] [<ffffff8008a0a6cc>] schedule_hrtimeout_range_clock+0x8c/0xf0
[ 86.297846] [<ffffff8008a0a740>] schedule_hrtimeout_range+0x10/0x18
[ 86.304150] [<ffffff8008a0a4a0>] usleep_range+0x50/0x58
[ 86.309418] [<ffffff800866d8dc>] dwc2_wait_for_mode.isra.4+0x54/0xd0
[ 86.315815] [<ffffff800866f058>] dwc2_core_reset+0xe0/0x168
[ 86.321431] [<ffffff800867e364>] dwc2_hsotg_core_init_disconnected+0x2c/0x310
[ 86.328602] [<ffffff8008673568>] dwc2_conn_id_status_change+0x130/0x250
[ 86.335254] [<ffffff80080ccd48>] process_one_work+0x118/0x370
[ 86.341035] [<ffffff80080ccfe8>] worker_thread+0x48/0x498
[ 86.346473] [<ffffff80080d2eb0>] kthread+0xd0/0xe8
[ 86.351299] [<ffffff8008082e80>] ret_from_fork+0x10/0x50
This seems to be caused by the dwc2_wait_for_mode() calling
usleep_range() while the hstog->lock spinlock is held, since
we take that before calling dwc2_hsotg_core_init_disconnected().
This patch avoids the issue by adding an extra argument to
dwc2_core_reset(), as suggested by John Youn, which allows us to
skip the waiting, which should be unnecessary when calling from
dwc2_hsotg_core_init_disconnected().
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Guodong Xu <guodong.xu@linaro.org>
Cc: Amit Pundir <amit.pundir@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: John Youn <johnyoun@synopsys.com>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Chen Yu <chenyu56@huawei.com>
Cc: Vardan Mikayelyan <mvardan@synopsys.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Further reduce the set of parameters set by platforms. Many of them are
unnecessary as they should be reported by hardware. They should only
need to be overridden if there is a problem.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Check these parameters only for true or false. There is no need to check
for greater or less than 0.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Remove the platform-specific static param structs and set only those
params that are necessary for each platform.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Group the members by global, host, and gadget params. Formatting and
organizational change only.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
