When the USB core wants to change to an alternate interface setting that
doesn't include an active endpoint, or de-configuring the device, the xHCI
driver needs to issue a Configure Endpoint command to tell the host to
drop some endpoints from the schedule. After the command completes, the
xHCI driver needs to free rings for any endpoints that were dropped.
Unfortunately, the xHCI driver wasn't actually freeing the endpoint rings
for dropped endpoints. The rings would be freed if the endpoint's
information was simply changed (and a new ring was installed), but dropped
endpoints never had their rings freed. This caused errors when the ring
segment DMA pool was freed when the xHCI driver was unloaded:
[ 5582.883995] xhci_hcd 0000:06:00.0: dma_pool_destroy xHCI ring segments, ffff88003371d000 busy
[ 5582.884002] xhci_hcd 0000:06:00.0: dma_pool_destroy xHCI ring segments, ffff880033716000 busy
[ 5582.884011] xhci_hcd 0000:06:00.0: dma_pool_destroy xHCI ring segments, ffff880033455000 busy
[ 5582.884018] xhci_hcd 0000:06:00.0: Freed segment pool
[ 5582.884026] xhci_hcd 0000:06:00.0: Freed device context pool
[ 5582.884033] xhci_hcd 0000:06:00.0: Freed small stream array pool
[ 5582.884038] xhci_hcd 0000:06:00.0: Freed medium stream array pool
[ 5582.884048] xhci_hcd 0000:06:00.0: xhci_stop completed - status = 1
[ 5582.884061] xhci_hcd 0000:06:00.0: USB bus 3 deregistered
[ 5582.884193] xhci_hcd 0000:06:00.0: PCI INT A disabled
Fix this issue and free endpoint rings when their endpoints are
successfully dropped.
This patch should be backported to kernels as old as 2.6.31.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
When an endpoint ring is freed, it is either cached in a per-device ring
cache, or simply freed if the ring cache is full. If the ring was added
to the cache, then virt_dev->num_rings_cached is incremented. The cache
is designed to hold up to 31 endpoint rings, in array indexes 0 to 30.
When the device is freed (when the slot was disabled),
xhci_free_virt_device() is called, it would free the cached rings in
array indexes 0 to virt_dev->num_rings_cached.
Unfortunately, the original code in xhci_free_or_cache_endpoint_ring()
would put the first entry into the ring cache in array index 1, instead of
array index 0. This was caused by the second assignment to rings_cached:
rings_cached = virt_dev->num_rings_cached;
if (rings_cached < XHCI_MAX_RINGS_CACHED) {
virt_dev->num_rings_cached++;
rings_cached = virt_dev->num_rings_cached;
virt_dev->ring_cache[rings_cached] =
virt_dev->eps[ep_index].ring;
This meant that when the device was freed, cached rings with indexes 0 to
N would be freed, and the last cached ring in index N+1 would not be
freed. When the driver was unloaded, this caused interesting messages
like:
xhci_hcd 0000:06:00.0: dma_pool_destroy xHCI ring segments, ffff880063040000 busy
This should be queued to stable kernels back to 2.6.33.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
Dmitry's patch
dfa49c4ad1 USB: xhci - fix math in xhci_get_endpoint_interval()
introduced a bug. The USB 2.0 spec says that full speed isochronous endpoints'
bInterval must be decoded as an exponent to a power of two (e.g. interval =
2^(bInterval - 1)). Full speed interrupt endpoints, on the other hand, don't
use exponents, and the interval in frames is encoded straight into bInterval.
Dmitry's patch was supposed to fix up the full speed isochronous to parse
bInterval as an exponent, but instead it changed the *interrupt* endpoint
bInterval decoding. The isochronous endpoint encoding was the same.
This caused full speed devices with interrupt endpoints (including mice, hubs,
and USB to ethernet devices) to fail under NEC 0.96 xHCI host controllers:
[ 100.909818] xhci_hcd 0000:06:00.0: add ep 0x83, slot id 1, new drop flags = 0x0, new add flags = 0x99, new slot info = 0x38100000
[ 100.909821] xhci_hcd 0000:06:00.0: xhci_check_bandwidth called for udev ffff88011f0ea000
...
[ 100.910187] xhci_hcd 0000:06:00.0: ERROR: unexpected command completion code 0x11.
[ 100.910190] xhci_hcd 0000:06:00.0: xhci_reset_bandwidth called for udev ffff88011f0ea000
When the interrupt endpoint was added and a Configure Endpoint command was
issued to the host, the host controller would return a very odd error message
(0x11 means "Slot Not Enabled", which isn't true because the slot was enabled).
Probably the host controller was getting very confused with the bad encoding.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Dmitry Torokhov <dtor@vmware.com>
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Tested-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There are several functions using same code to get max ports and port array,
this patch moves the common code to a function in order to reuse them easily.
Signed-off-by: Huajun Li <huajun.li.lee@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
The BIOS handoff for the unused EHCI controller on the ExoPC tablet
hangs for 90 seconds on boot. Detect that device, skip negotiation
and force the handoff.
Signed-off-by: Andy Ross <andy.ross@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Factor the handoff code out from quirk_usb_disable_ehci
Signed-off-by: Andy Ross <andy.ross@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When the xHCI driver attempts to cancel a transfer, it issues a Stop
Endpoint command and waits for the host controller to indicate which TRB
it was in the middle of processing. The host will put an event TRB with
completion code COMP_STOP on the event ring if it stops on a control
transfer TRB (or other types of transfer TRBs). The ring handling code
is supposed to set ep->stopped_trb to the TRB that the host stopped on
when this happens.
Unfortunately, there is a long-standing bug in the control transfer
completion code. It doesn't actually check to see if COMP_STOP is set
before attempting to process the transfer based on which part of the
control TD completed. So when we get an event on the data phase of the
control TRB with COMP_STOP set, it thinks it's a normal completion of
the transfer and doesn't set ep->stopped_td or ep->stopped_trb.
When the ring handling code goes on to process the completion of the Stop
Endpoint command, it sees that ep->stopped_trb is not a part of the TD
it's trying to cancel. It thinks the hardware has its enqueue pointer
somewhere further up in the ring, and thinks it's safe to turn the control
TRBs into no-op TRBs. Since the hardware was in the middle of the control
TRBs to be cancelled, the proper software behavior is to issue a Set TR
dequeue pointer command.
It turns out that the NEC host controllers can handle active TRBs being
set to no-op TRBs after a stop endpoint command, but other host
controllers have issues with this out-of-spec software behavior. Fix this
behavior.
This patch should be backported to kernels as far back as 2.6.31, but it
may be a bit challenging, since process_ctrl_td() was introduced in some
refactoring done in 2.6.36, and some endian-safe patches added in 2.6.40
that touch the same lines.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: stable@kernel.org
The __devinit and __devexit macros were added to probe and remove
functions. The macros move the probe and remove functions to the
devinit and devexit sections
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-usb-next' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/sarah/xhci:
xHCI 1.0: Max Exit Latency Too Large Error
xHCI 1.0: TT_THINK_TIME set
xHCI 1.0: Block Interrupts for Isoch transfer
xHCI 1.0: Isoch endpoint CErr field set
xHCI 1.0: Control endpoint average TRB length field set
xHCI 1.0: Setup Stage TRB Transfer Type flag
This is a new TRB Completion Code of the xHCI spec 1.0.
Asserted by the Evalute Context Command if the proposed Max Exit Latency would
not allow the periodic endpoints of the Device Slot to be scheduled.
Signed-off-by: Alex He <alex.he@amd.com>
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
xHCI 1.0 spec says the TT Think Time field shall be set to zero if the device
is not a High-speed hub.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Currently an isoc URB is divided into multiple TDs, and every TD will
trigger an interrupt when it's processed. However, software can schedule
multiple TDs at a time, and it only needs an interrupt every URB.
xHCI 1.0 introduces the Block Event Interrupt(BEI) flag which allows Normal
and Isoch Transfer TRBs to place an Event TRB on an Event Ring but not
assert an intrrupt to the host, and the interrupt rate is significantly
reduced and the system performance is improved.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
xHCI 1.0 specification specifies that CErr does not apply to Isoch endpoints
and shall be set to '0' for Isoch endpoints.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
xHCI 1.0 specification indicates that software should set Average TRB Length
to '8' for control endpoints.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Setup Stage Transfer Type field is added to indicate the presence and the
direction of the Data Stage TD, and determines the direction of the Status
Stage TD so the wLength length field should be ignored by the xHC.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This patch adds support for the UHCI part of the GRLIB GRUSBHC controller
found on some LEON/GRLIB SoCs.
The UHCI HCD previously only supported controllers connected over PCI.
This patch adds support for the first non-PCI UHCI HC. I have tried to
replicate the solution used in ehci-hcd.c.
Tested on GR-LEON4-ITX board (LEON4/GRLIB with GRUSBHC) and x86 with Intel
UHCI HC.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is part of a series that extend the UHCI HCD to support
non-PCI host controllers.
This patch also extends the uhci_{read,write}* functions to allow accesses
to registers not mapped into PCI I/O space. This extension also includes
the addition of a void __iomem pointer to the uhci structure.
A new Kconfig option is added to signal that the system has a non-PCI HC.
If this Kconfig option is set, uhci-hcd.c will include generic reset functions
for systems that do not make use of keyboard and mouse legacy support. PCI
controllers will still always use the reset functions from pci-quirks
This patch is followed by a patch that adds bus glue for the first non-PCI
UHCI HC.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is part of a series that extend the UHCI HCD to support
non-PCI controllers.
This patch replaces in{b,w,l} and out{b,wl} with calls to local inline
functions. This is done so that the register access functions can be
extended to support register areas not mapped in PCI I/O space.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is part of a series that extend the UHCI HCD to support
non-PCI controllers.
This patch moves PCI specific functions to uhci-pci.c and includes
this file in uhci-hcd.c. It also renames the function uhci_init to
uhci_pci_init.
uhci_init/uhci_pci_init is modified so that the port-detection logic
is kept in a new separate function uhci_count_ports() in uhci-hcd.c.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is part of a series that extend the UHCI HCD to support
non-PCI host controllers.
This patch fixes the following warnings from checkpatch:
ERROR: switch and case should be at the same indent
+ switch (to_pci_dev(uhci_dev(uhci))->vendor) {
+ default:
[...]
+ case PCI_VENDOR_ID_GENESYS:
[...]
+ case PCI_VENDOR_ID_INTEL:
WARNING: static char array declaration should probably be static const char
+ static char bad_Asus_board[] = "A7V8X";
WARNING: Use DEFINE_PCI_DEVICE_TABLE for struct pci_device_id
+static const struct pci_device_id uhci_pci_ids[] = { {
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is part of a series that extend the UHCI HCD to support
non-PCI controllers.
This patch changes calls to uhci_reset_hc, uhci_check_and_reset_hc,
configure_hc, resume_detect_interrupts_are_broken and
global_suspend_mode_is_broken so that they are made through pointers
in the uhci hcd struct. This will allow these functions to be replaced
with bus/arch specific functions.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is part of a series that extend the UHCI HCD to support
non-PCI host controllers.
uhci-hub.c contained two PCI vendor checks for silicon quirks. Move
these checks into uhci-hcd.c and use bits in uhci_hcd structure to
mark that we need to use the quirks.
This patch is followed by other patches that will remove PCI
dependencies from uhci-hcd.c as well.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes the checkpatch errors ans warnings listed below:
ERROR: do not use assignment in if condition
WARNING: line over 80 characters
WARNING: braces {} are not necessary for single statement blocks
WARNING: space prohibited between function name and open parenthesis '('
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Remove a stray 'return 0' at the top of the suspend callback,
and move au1xxx_stop_ehc() out of the ehci spinlock since it takes
some time to complete.
Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds support for the GRLIB GRUSBHC EHCI controller from
Aeroflex Gaisler. The controller is typically found on LEON/GRLIB
SoCs.
Tested on GR-LEON4-ITX with with little endian interface and on
LEON3 system on GR-PCI-XC5V development board for big endian
controller.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The two first HC capability registers (CAPLENGTH and HCIVERSION)
are defined as one 8-bit and one 16-bit register. Most HC
implementations have selected to treat these registers as part
of a 32-bit register, giving the same layout for both big and
small endian systems.
This patch adds a new quirk, big_endian_capbase, to support
controllers with big endian register interfaces that treat
HCIVERSION and CAPLENGTH as individual registers.
Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch clears PORT_PLC if xhci_bus_resume() resumes a previous suspended
port, because if a port transition from U3 to U0 state, it will report a
port link state change, and software should clear the corresponding PLC bit.
It also uses hcd->speed to check if a port is a USB2 protocol port.
The patch fixes the issue that USB keyboard can not wakeup system from
hibernation.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
The reset value of the uSOF cycle period is incorrect. Set it to
60,000 bits. Without this, several commercial USB flash memory
devices and hubs fail to work properly.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The UCTL clock initialization will cause the ehci and ohci blocks to
become inoperable if the clocks are reinitialized.
Check to see if the clocks have already been initialized.
Also use a mutex to protect the clock initialization code so that
there can be no attempt to use the clocks before they are fully
configured.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This fixes a bug in my previous (2.6.38) patch series which caused
urb->status value to be wrong after unlink (broke usbtest 11, 12).
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* 'for-usb-next' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/sarah/xhci:
xhci 1.0: Set transfer burst last packet count field.
xhci 1.0: Set transfer burst count field.
xhci 1.0: Update TD size field format.
xhci 1.0: Only interrupt on short packet for IN EPs.
xhci: Remove sparse warning about cmd_status.
usbcore: warm reset USB3 port in SS.Inactive state
usbcore: Refine USB3.0 device suspend and resume
xHCI: report USB3.0 portstatus comply with USB3.0 specification
xHCI: Set link state support
xHCI: Clear link state change support
xHCI: warm reset support
usb/ch9: use proper endianess for wBytesPerInterval
xhci: Remove recursive call to xhci_handle_event
xhci: Add an assertion to check for virt_dev=0 bug.
xhci: Add rmb() between reading event validity & event data access.
xhci: Make xHCI driver endian-safe
This patch replaces the code that handles qtds. Intead of directly allocating
chip mem and chip slot, enqueue the transfer in a list of queue heads. Use
a centralized function enqueue_qtds() to prioritize and enqueue transfers.
This removes all of the interrupt context BUG() calls when out of chip
mem or transfer slots. It also makes it possible to efficiently use the
dual-port mem on the chip for double-buffered transfers, which improve
transfer times to/from/between usb sticks by about 40 % on my HW.
With this patch it should also be possible to handle qtd scheduling outside
of the interrupt handler, for significantly improved kernel latency. I have
not implemented this since there are some locking issues which I haven't
had time to look at.
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This fixes a bug in my previous (2.6.38) patch series which caused
urb->status value to be wrong after unlink (broke usbtest 11, 12).
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Since we always set the OR flag for each transfer, we can just as well set all
these bits to 1 at init and be done with it. Also, HcBufferStatus can be set
at init as per the ISP1761 datasheet page 47 with no loss of performance.
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This collects urb enqueue code that was spread out all over the place
into a couple of more readable functions.
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This removes the "qh is 0" printout. qh == NULL if the urb has
been unlinked, so this condition is normal.
Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The xHCI 1.0 specification defines a new isochronous TRB field, called
transfer burst last packet count (TBLPC). This field defines the number
of packets in the last "burst" of packets in a TD. Only SuperSpeed
endpoints can handle more than one burst, so this is set to the number for
packets in a TD for all non-SuperSpeed devices (minus one, since the field
is zero based).
This patch should have no effect on host controllers that don't advertise
the xHCI 1.0 (0x100) version number in their hci_version field.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
The xHCI 1.0 specification adds a new field to the fourth dword in an
isochronous TRB: the transfer burst count (TBC). This field is only
non-zero for SuperSpeed devices. Each SS endpoint sets the bMaxBurst
field in the SuperSpeed endpoint companion descriptor, which indicates how
many max-packet-sized "bursts" it can handle in one service interval. The
device driver may choose to burst less max packet sized chunks each
service interval (which is defined by one TD). The xHCI driver indicates
to the host controller how many bursts it needs to schedule through the
transfer burst count field.
This patch will only effect xHCI hosts that advertise 1.0 support (0x100)
in the HCI version field of their capabilities register.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
The xHCI 1.0 specification changes the format of the TD size field in
Normal and Isochronous TRBs. The field in control TRBs is still set to
reserved zero. Instead of representing the number of bytes left to
transfer in the TD (including the current TRB's buffer), it now represents
the number of packets left to transfer (*not* including this TRB).
See section 4.11.2.4 of the xHCI 1.0 specification for details. The math
is basically copied straight from there.
Create a new function, xhci_v1_0_td_remainder(), that should be called for
all xHCI 1.0 host controllers. The field location and maximum value is
still the same, so reuse the old function, xhci_td_remainder(), to handle
the bit shifting.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
It doesn't make sense to set the interrupt on short packet (TRB_ISP) flag
for TRBs queued to endpoints that only receive packets from the host
controller (i.e. OUT endpoints). Packets can only be short when they are
sent from a USB device. Plus, the xHCI 1.0 specification forbids setting
the flag for anything but IN endpoints.
While we're at it, remove some of my snide remarks about the inefficiency
of event data TRBs.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Sparse complains about the arguments to xhci_evaluate_context_result() and
xhci_configure_endpoint_result():
CHECK drivers/usb/host/xhci.c
drivers/usb/host/xhci.c:1647:53: warning: incorrect type in argument 3 (different signedness)
drivers/usb/host/xhci.c:1647:53: expected int *cmd_status
drivers/usb/host/xhci.c:1647:53: got unsigned int [usertype] *[assigned] cmd_status
drivers/usb/host/xhci.c:1648:50: warning: incorrect type in argument 3 (different signedness)
drivers/usb/host/xhci.c:1648:50: expected int *cmd_status
drivers/usb/host/xhci.c:1648:50: got unsigned int [usertype] *[assigned] cmd_status
The command status is taken from the command completion event TRB, and
will always be a positive number. Change the signature of
xhci_evaluate_context_result() and xhci_configure_endpoint_result() to
take a u32 for cmd_status.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
In the past, we use USB2.0 request to suspend and resume a USB3.0 device.
Actually, USB3.0 hub does not support Set/Clear PORT_SUSPEND request,
instead, it uses Set PORT_LINK_STATE request. This patch makes USB3.0 device
suspend/resume comply with USB3.0 specification.
This patch fixes the issue that USB3.0 device can not be suspended when
connected to a USB3.0 external hub.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
USB3.0 specification has different wPortStatus and wPortChange definitions
from USB2.0 specification. Since USB3 root hub and USB2 root hub are split
now and USB3 hub only has USB3 protocol ports, we should modify the
portstatus and portchange report of USB3 ports to comply with USB3.0
specification.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This patch adds support for Set Port Feature(PORT_LINK_STATE) request.
The most significant byte (bits 15..8) of the wIndex field specifies
the U state the host software wants to put the link connected to the
port into. This request is only valid when the PORT_ENABLE bit is set
and the PORT_LINK_STATE should not be above value '5' (Rx.Detect).
This request will be later used to replace the set/clear suspend USB3
protocol ports in hub driver.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This patch adds support for Clear Port Feature(C_PORT_LINK_STATE)
request from usbcore.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
