Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay
Ethernet"' I failed to notice that b4 noticed it was based on next and
so took that as the base commit and merged that part of next to master.

This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing
changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35.

Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: Remove <common.h> and add needed includes

Remove <common.h> from this driver directory and when needed
add missing include files directly.

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set up endpoints for the first 2 interfaces

The xhci driver currently only does the necessary initialization for
endpoints found in the first interface descriptor. Apple USB keyboards
(released 2021) use the second interface descriptor for the HID keyboard
boot protocol. To allow USB drivers to use endpoints from other
interface descriptors the xhci driver needs to ensure these endpoints
are initialized as well.
Use USB_MAX_ACTIVE_INTERFACES to control how many interface descriptors
are considered during endpoint initialisation.
For now define it to 2 as that is sufficient for supporting the Apple
keyboards.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

usb: xhci: refactor xhci_set_configuration

In the next step endpoints for multiple interfaces are set up. Move most
of the per endpoint initialization to separate function to avoid another
identation level.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

usb: xhci: Guard all calls to xhci_wait_for_event

xhci_wait_for_event returns NULL on timeout, so the caller always has to
check for that. This addresses immediate explosions in this part
of the code when timeouts happen, but not the root cause for the
timeout.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Fix double free on failure

drivers/core/device.c will call `device_free()` after xhci_register
already frees the private device data. This can cause a crash later
during the boot process, observed on aarch64 RPi4b as a synchronous
exception. All callers of xhci_register use priv_auto, so this won't
lead to memory leaks.

Signed-off-by: Richard Habeeb <richard.habeeb@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Fix root hub descriptor

When a system has multiple XHCI controllers, some of the
properties described in the descriptor of the root hub (such as
the number of ports) might differ between controllers. Fix this
by switching from a single global hub descriptor to a hub
descriptor per controller.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Implement DMA mapping

An XHCI controller that sits behind an IOMMU needs to map and unmap
its memory buffers to do DMA. Implement this by inroducing new
xhci_dma_map() and xhci_dma_unmap() helper functions. The
xhci_dma_map() function replaces the existing xhci_virt_to_bus()
function in the sense that it returns the bus address in the case
of simple address translation in the absence of an IOMMU. The
xhci_bus_to_virt() function is eliminated by storing the CPU
address of the allocated scratchpad memory in struct xhci_ctrl.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: Remove non-DM code in ehci-fsl and xhci

The DM_USB migration deadline has passed and this is not used in SPL.
Remove this now unused code.

Signed-off-by: Tom Rini <trini@konsulko.com>

doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

usb: xhci-pci: Move reset logic out of XHCI core

Resetting an XHCI controller inside xhci_register undoes any register
setup performed by the platform driver. And at least on the Allwinner
H6, resetting the XHCI controller also resets the PHY, which prevents
the controller from working. That means the controller must be taken out
of reset before initializing the PHY, which must be done before calling
xhci_register.

The logic in the XHCI core was added to support the Raspberry Pi 4
(although this was not mentioned in the commit log!), which uses the
xhci-pci platform driver. Move the reset logic to the platform driver,
where it belongs, and where it cannot interfere with other platform
drivers.

This also fixes a failure to call reset_free if xhci_register failed.

Fixes: 0b80371b350e ("usb: xhci: Add reset controller support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

xhci: translate virtual addresses into the bus's address space

So far we've been content with passing physical addresses when
configuring memory addresses into XHCI controllers, but not all
platforms have buses with transparent mappings. Specifically the
Raspberry Pi 4 might introduce an offset to memory accesses incoming
from its PCIe port.

Introduce xhci_virt_to_bus() and xhci_bus_to_virt() to cater with these
limitations, and make sure we don't break non DM users.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: fix compilation for 32 bit]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

fix from nicolas

usb: xhci: Include device_compat.h

This header is necessary for the dev_xxx macros.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

usb: xhci: convert to readx_poll_sleep_timeout()

Use readx_poll_sleep_timeout() to poll the register status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: use macros with parameter to fill ep_info2

Use macros with parameter to fill ep_info2, then some macros
for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: convert to HCS_MAX_PORTS()

Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add quirks flag to support MediaTek xHCI 0.96

There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reserved
DWs of slot context and endpoint context.
2. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add a member hci_version in xhci_ctrl struct

Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add virt_to_phys() to support mapped platforms

Some platforms, like MIPS Octeon, use mapped addresses (virtual address
!= physical address). On these platforms we need to make sure, that the
local virtual addresses are converted to physical (DMA) addresses for
the xHCI controller. This patch adds the missing virt_to_phys() calls,
so that the correct addresses are used.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Add reset controller support

Some atypical users of xhci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[mb: squash fix to only build xhci_reset_hw() if CONFIG_DM_BUS]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

xhci: mediatek: Add support for MTK xHCI host controller

This patch is used to support the on-chip xHCI controller on
MediaTek SoCs, currently control/bulk/interrupt transfers are
supported.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

common: Move ARM cache operations out of common.h

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not under drivers/usb/xhci

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

usb: Add nonblock argument to submit_int_msg

This will be used to implement non-blocking keyboard polling in case of
errors.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

usb: s/CONFIG_DM_USB/CONFIG_IS_ENABLED(DM_USB)/

This allows to disable the USB driver model in SPL because it checks
the CONFIG_SPL_DM_USB variable for SPL builds. Nothing changes for
regular non-SPL builds.

Signed-off-by: Sven Schwermer <sven@svenschwermer.de>

usb: xhci: Handle endianness in xhci_set_configuration()

In xhci_set_configuration(), 'Context Entries' field in the slot
context was cleared with mask LAST_CTX_MASK, but it should have
taken the endianness into consideration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix config fail of FS hub behind a HS hub with MTT

If a full speed hub connects to a high speed hub which supports MTT,
the MTT field of its slot context will be set to 1 when xHCI driver
setups an xHCI virtual device in xhci_setup_addressable_virt_dev().
Once usb core fetch its hub descriptor, and need to update the xHC's
internal data structures for the device, the HUB field of its slot
context will be set to 1 too, meanwhile MTT is also set before, this
will cause configure endpoint command fail. In the case, we should
clear MTT to 0 for full speed hub according to section 6.2.2.

This keeps in sync with Linux kernel commit:
096b110: usb: xhci: fix config fail of FS hub behind a HS hub with MTT

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Initialize dev_state to 0 in the input slot context

Per xHCI spec chapter 6.2.2 table 6-7, as input, software shall
initialize the dev_state field to '0'. Though this does not seem
to cause any issue with most xHC implementations, let's do this
to conform with the spec.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

usb: xhci: Set accurate add context flags when updating hub attributes

If a USB 3.0 hub is plugged into the root port of the xHC, the xHCI
driver will issue a 'Configure Endpoint' command to the xHC for it
to update its internal data structure for this hub device. The hub
attributes are in the slot context so we need tell xHC to update the
slot context by setting the add context flags of the input control
context to only cover the slot context.

At present the add context flags is or'ed with the slot context bit,
but it should really be accurately set to the slot context, as the
variable that holds the value of the add context flags comes from
whatever was set in the last command execution, which may contain
additional contexts that 'Configure Endpoint' command should not
touch. Some xHC implementations like x86 don't complain such, but
it was observed on Renesas RCar Gen3 platform that the RCar xHC
complains with a 'TRB error' completion codes as the response.

Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set 'Average TRB Length' to 8 for control endpoints

Update the codes to conform with xHCI spec chapter 6.2.3.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Set 'Error Count' to 0 for isoch endpoints

Per xHCI spec, 'Error Count' should be set to 0 for isoch endpoints.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Program max burst size for endpoint

The 'Max Burst Size' indicates to the xHC the maximum number of
consecutive USB transactions that should be executed per scheduling
opportunity. This is a “zero-based” value, where 0 to 15 represents
burst sizes of 1 to 16, but at present this is always set to zero.
Let's program the required value according to real needs.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Honor endpoint's interval

USB endpoint reports the period between consecutive requests to send
or receive data as bInverval in its endpoint descriptor. So far this
is ignored by xHCI driver and the 'Interval' field in xHC's endpoint
context is always programmed to zero which means 1ms for low speed
or full speed , or 125us for high speed or super speed. We should
honor the interval by getting it from endpoint descriptor.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix max packet size for full speed device endpoint 0

In xhci_check_maxpacket(), the control endpoint 0 max packet size
is wrongly taken from the interface's endpoint descriptor. However
the default endpoint 0 does not come with an endpoint descriptor
hence is not included in the interface structure. Change to use
epmaxpacketin[0] instead.

The other bug in this routine is that when setting max packet size
to the xHC endpoint 0 context, it does not clear its previous value
at all before programming a new one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add interrupt transfer support

xHCI uses normal TRBs for both bulk and interrupt. This adds the
missing interrupt transfer support to xHCI so that devices like
USB keyboard that uses interrupt transfer can work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

dm: usb: xhci: Implement get_max_xfer_size() operation

xHCD allocates one segment which includes 64 TRBs for each endpoint
and the last TRB in this segment is configured as a link TRB to form
a TRB ring. Each TRB can transfer up to 64K bytes, however data
buffers referenced by transfer TRBs shall not span 64KB boundaries.
Hence the maximum number of TRBs we can use in one transfer is 62.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Implement update_hub_device() operation

There is no way to know whether the attached device is a hub or
not in advance before the device's descriptor is fetched. But
once we know it's a high speed hub, per the xHCI spec, we need
to tell xHC it's a hub device by initializing hub-related fields
in the input slot context.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Change xhci_setup_addressable_virt_dev() signature

For future extension, change xhci_setup_addressable_virt_dev()
signature to accept a pointer to 'struct usb_device', instead
of its members slot_id & speed, as the struct already contains
these two plus some other useful information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: hub: Add a new API to test if a hub device is root hub

Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.

While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Get rid of CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS

xHC reports supported maximum number of ports in the HCSPARAMS1
register, so it's unnecessary to use a hardcoded config option
CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Change USB hub descriptor to match USB 3.0 hubs

USB 3.0 hubs have a slightly different hub descriptor than USB 2.0
hubs, with a fixed (rather than variable length) size. Change the
host controller drivers that access those last two fields
(DeviceRemovable and PortPowerCtrlMask) to use the union.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Send correct wValue to get hub descriptor of a USB 3.0 hub

Testing a USB 3.0 hub by connecting it to the xHCI port on Intel
MinnowMax, when issuing 'get hub descriptor' to the hub, xHCI
reports a transfer event TRB with a completion code 6 which means
'Stall Error'.

In fact super speed USB hub descriptor type is 0x2a, not 0x29.
Sending correct SETUP packet to the hub makes it not stall anymore.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: xhci: Add input slot context in xhci_set_configuration()

A valid input slot context for a 'configure endpoint' command requires
the 'Context Entries' field to be initialized to the index of the last
valid endpoint context that is defined by the target configuration. We
set up the 'Context Entries' field, but we forget to include the input
slot context in the input control context 'Add Context flags' bitmap.
So xHC will simply ignore input slot context and continue using its own
which contains old information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: add static to local symbols

Sparse reports "... was not declared. Should it be static?"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>

Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.

Add test into xhci_submit_control_message for usb requesttype in USB
vendor request being of standardized type. This fixes detection of
certain USB fixes, for example Ethernet, USB 3.0 port. Non standardized
requesttype in USB vendor request will be ignored.

Signed-off-by: Ted Chen <tedchen@realtek.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>

dm: Rename dev_get_parentdata() to dev_get_parent_priv()

The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

usb: xhci: Fix a potential NULL pointer dereference

This patch fixes a potential NULL pointer dereference arising on
non-present/non-initialized xHCI controllers and adds some error
handling to xHCI code

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

dm: usb: Rename the XHCI HCD to U-Boot

This should be "U-Boot", not "u-boot".

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: Support driver model in XHCI

Add driver model support in the XHCI support code so that it can be used by
XHCI USB drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Factor out common init/uninit

Since driver model will want to use most of the same code for XHCI init
and uninit, put it in a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_setup_addressable_virt_dev()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_alloc_virt_device()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use a function to get xhci_ctrl

Rather than getting this directly from struct usb_device, call a function
to obtain it. This will make it possible for driver model to provide it
another way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: 64-bit architectures support for xHCI

This commit allows xHCI to use both 64 and 32 bit memory
physical addresses depending on architecture it's being built for.
Also it makes use of readq()/writeq() on 64-bit systems

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

linux/kernel.h: sync min, max, min3, max3 macros with Linux

U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does. This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
- Use min, max, min3, max3 only when the arguments have the same type
(or add casts to the arguments)
- Use min_t/max_t instead with the appropriate type for the first
argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>

usb: xhci: (likely) fix bracket in if condition

Because of the brackets the & and && is evaluated before
the comparison. This is likely not the intention. Change
it to test the first and second condition to both be true.

cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

usb: add enum usb_init_type parameter to usb_lowlevel_init

This parameter will later be used to verify OTG ports.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

USB: xHCI: Add stack support for xHCI

This adds stack layer for eXtensible Host Controller Interface
which facilitates use of USB 3.0 in host mode.

Adapting xHCI host controller driver in linux-kernel
by Sarah Sharp to needs in u-boot.

Initial porting from Linux kernel version 3.4, with following
top commit history of drivers/usb/host/xhci* :
cf84055 xHCI: Cleanup isoc transfer ring when TD length mismatch found

This adds the basic xHCI host controller driver with bare minimum
features:
- Control/Bulk transfer support has been added with required
infrastructure for necessary xHC data structures.
- Stream protocol hasn't been supported yet.
- No support for quirky devices has been added.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

usb: Remove <common.h> and add needed includes

Remove <common.h> from this driver directory and when needed
add missing include files directly.

Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set up endpoints for the first 2 interfaces

The xhci driver currently only does the necessary initialization for
endpoints found in the first interface descriptor. Apple USB keyboards
(released 2021) use the second interface descriptor for the HID keyboard
boot protocol. To allow USB drivers to use endpoints from other
interface descriptors the xhci driver needs to ensure these endpoints
are initialized as well.
Use USB_MAX_ACTIVE_INTERFACES to control how many interface descriptors
are considered during endpoint initialisation.
For now define it to 2 as that is sufficient for supporting the Apple
keyboards.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

usb: xhci: refactor xhci_set_configuration

In the next step endpoints for multiple interfaces are set up. Move most
of the per endpoint initialization to separate function to avoid another
identation level.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

usb: xhci: Guard all calls to xhci_wait_for_event

xhci_wait_for_event returns NULL on timeout, so the caller always has to
check for that. This addresses immediate explosions in this part
of the code when timeouts happen, but not the root cause for the
timeout.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Fix double free on failure

drivers/core/device.c will call `device_free()` after xhci_register
already frees the private device data. This can cause a crash later
during the boot process, observed on aarch64 RPi4b as a synchronous
exception. All callers of xhci_register use priv_auto, so this won't
lead to memory leaks.

Signed-off-by: Richard Habeeb <richard.habeeb@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Fix root hub descriptor

When a system has multiple XHCI controllers, some of the
properties described in the descriptor of the root hub (such as
the number of ports) might differ between controllers. Fix this
by switching from a single global hub descriptor to a hub
descriptor per controller.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Implement DMA mapping

An XHCI controller that sits behind an IOMMU needs to map and unmap
its memory buffers to do DMA. Implement this by inroducing new
xhci_dma_map() and xhci_dma_unmap() helper functions. The
xhci_dma_map() function replaces the existing xhci_virt_to_bus()
function in the sense that it returns the bus address in the case
of simple address translation in the absence of an IOMMU. The
xhci_bus_to_virt() function is eliminated by storing the CPU
address of the allocated scratchpad memory in struct xhci_ctrl.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: Remove non-DM code in ehci-fsl and xhci

The DM_USB migration deadline has passed and this is not used in SPL.
Remove this now unused code.

Signed-off-by: Tom Rini <trini@konsulko.com>

doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

usb: xhci-pci: Move reset logic out of XHCI core

Resetting an XHCI controller inside xhci_register undoes any register
setup performed by the platform driver. And at least on the Allwinner
H6, resetting the XHCI controller also resets the PHY, which prevents
the controller from working. That means the controller must be taken out
of reset before initializing the PHY, which must be done before calling
xhci_register.

The logic in the XHCI core was added to support the Raspberry Pi 4
(although this was not mentioned in the commit log!), which uses the
xhci-pci platform driver. Move the reset logic to the platform driver,
where it belongs, and where it cannot interfere with other platform
drivers.

This also fixes a failure to call reset_free if xhci_register failed.

Fixes: 0b80371b350e ("usb: xhci: Add reset controller support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

xhci: translate virtual addresses into the bus's address space

So far we've been content with passing physical addresses when
configuring memory addresses into XHCI controllers, but not all
platforms have buses with transparent mappings. Specifically the
Raspberry Pi 4 might introduce an offset to memory accesses incoming
from its PCIe port.

Introduce xhci_virt_to_bus() and xhci_bus_to_virt() to cater with these
limitations, and make sure we don't break non DM users.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: fix compilation for 32 bit]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

fix from nicolas

usb: xhci: Include device_compat.h

This header is necessary for the dev_xxx macros.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

usb: xhci: convert to readx_poll_sleep_timeout()

Use readx_poll_sleep_timeout() to poll the register status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: use macros with parameter to fill ep_info2

Use macros with parameter to fill ep_info2, then some macros
for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: convert to HCS_MAX_PORTS()

Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add quirks flag to support MediaTek xHCI 0.96

There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reserved
DWs of slot context and endpoint context.
2. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add a member hci_version in xhci_ctrl struct

Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add virt_to_phys() to support mapped platforms

Some platforms, like MIPS Octeon, use mapped addresses (virtual address
!= physical address). On these platforms we need to make sure, that the
local virtual addresses are converted to physical (DMA) addresses for
the xHCI controller. This patch adds the missing virt_to_phys() calls,
so that the correct addresses are used.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Add reset controller support

Some atypical users of xhci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[mb: squash fix to only build xhci_reset_hw() if CONFIG_DM_BUS]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

xhci: mediatek: Add support for MTK xHCI host controller

This patch is used to support the on-chip xHCI controller on
MediaTek SoCs, currently control/bulk/interrupt transfers are
supported.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

common: Move ARM cache operations out of common.h

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not under drivers/usb/xhci

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

usb: Add nonblock argument to submit_int_msg

This will be used to implement non-blocking keyboard polling in case of
errors.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

usb: s/CONFIG_DM_USB/CONFIG_IS_ENABLED(DM_USB)/

This allows to disable the USB driver model in SPL because it checks
the CONFIG_SPL_DM_USB variable for SPL builds. Nothing changes for
regular non-SPL builds.

Signed-off-by: Sven Schwermer <sven@svenschwermer.de>

usb: xhci: Handle endianness in xhci_set_configuration()

In xhci_set_configuration(), 'Context Entries' field in the slot
context was cleared with mask LAST_CTX_MASK, but it should have
taken the endianness into consideration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix config fail of FS hub behind a HS hub with MTT

If a full speed hub connects to a high speed hub which supports MTT,
the MTT field of its slot context will be set to 1 when xHCI driver
setups an xHCI virtual device in xhci_setup_addressable_virt_dev().
Once usb core fetch its hub descriptor, and need to update the xHC's
internal data structures for the device, the HUB field of its slot
context will be set to 1 too, meanwhile MTT is also set before, this
will cause configure endpoint command fail. In the case, we should
clear MTT to 0 for full speed hub according to section 6.2.2.

This keeps in sync with Linux kernel commit:
096b110: usb: xhci: fix config fail of FS hub behind a HS hub with MTT

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Initialize dev_state to 0 in the input slot context

Per xHCI spec chapter 6.2.2 table 6-7, as input, software shall
initialize the dev_state field to '0'. Though this does not seem
to cause any issue with most xHC implementations, let's do this
to conform with the spec.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

usb: xhci: Set accurate add context flags when updating hub attributes

If a USB 3.0 hub is plugged into the root port of the xHC, the xHCI
driver will issue a 'Configure Endpoint' command to the xHC for it
to update its internal data structure for this hub device. The hub
attributes are in the slot context so we need tell xHC to update the
slot context by setting the add context flags of the input control
context to only cover the slot context.

At present the add context flags is or'ed with the slot context bit,
but it should really be accurately set to the slot context, as the
variable that holds the value of the add context flags comes from
whatever was set in the last command execution, which may contain
additional contexts that 'Configure Endpoint' command should not
touch. Some xHC implementations like x86 don't complain such, but
it was observed on Renesas RCar Gen3 platform that the RCar xHC
complains with a 'TRB error' completion codes as the response.

Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set 'Average TRB Length' to 8 for control endpoints

Update the codes to conform with xHCI spec chapter 6.2.3.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Set 'Error Count' to 0 for isoch endpoints

Per xHCI spec, 'Error Count' should be set to 0 for isoch endpoints.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Program max burst size for endpoint

The 'Max Burst Size' indicates to the xHC the maximum number of
consecutive USB transactions that should be executed per scheduling
opportunity. This is a “zero-based” value, where 0 to 15 represents
burst sizes of 1 to 16, but at present this is always set to zero.
Let's program the required value according to real needs.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Honor endpoint's interval

USB endpoint reports the period between consecutive requests to send
or receive data as bInverval in its endpoint descriptor. So far this
is ignored by xHCI driver and the 'Interval' field in xHC's endpoint
context is always programmed to zero which means 1ms for low speed
or full speed , or 125us for high speed or super speed. We should
honor the interval by getting it from endpoint descriptor.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix max packet size for full speed device endpoint 0

In xhci_check_maxpacket(), the control endpoint 0 max packet size
is wrongly taken from the interface's endpoint descriptor. However
the default endpoint 0 does not come with an endpoint descriptor
hence is not included in the interface structure. Change to use
epmaxpacketin[0] instead.

The other bug in this routine is that when setting max packet size
to the xHC endpoint 0 context, it does not clear its previous value
at all before programming a new one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add interrupt transfer support

xHCI uses normal TRBs for both bulk and interrupt. This adds the
missing interrupt transfer support to xHCI so that devices like
USB keyboard that uses interrupt transfer can work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

dm: usb: xhci: Implement get_max_xfer_size() operation

xHCD allocates one segment which includes 64 TRBs for each endpoint
and the last TRB in this segment is configured as a link TRB to form
a TRB ring. Each TRB can transfer up to 64K bytes, however data
buffers referenced by transfer TRBs shall not span 64KB boundaries.
Hence the maximum number of TRBs we can use in one transfer is 62.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Implement update_hub_device() operation

There is no way to know whether the attached device is a hub or
not in advance before the device's descriptor is fetched. But
once we know it's a high speed hub, per the xHCI spec, we need
to tell xHC it's a hub device by initializing hub-related fields
in the input slot context.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Change xhci_setup_addressable_virt_dev() signature

For future extension, change xhci_setup_addressable_virt_dev()
signature to accept a pointer to 'struct usb_device', instead
of its members slot_id & speed, as the struct already contains
these two plus some other useful information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: hub: Add a new API to test if a hub device is root hub

Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.

While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Get rid of CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS

xHC reports supported maximum number of ports in the HCSPARAMS1
register, so it's unnecessary to use a hardcoded config option
CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Change USB hub descriptor to match USB 3.0 hubs

USB 3.0 hubs have a slightly different hub descriptor than USB 2.0
hubs, with a fixed (rather than variable length) size. Change the
host controller drivers that access those last two fields
(DeviceRemovable and PortPowerCtrlMask) to use the union.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Send correct wValue to get hub descriptor of a USB 3.0 hub

Testing a USB 3.0 hub by connecting it to the xHCI port on Intel
MinnowMax, when issuing 'get hub descriptor' to the hub, xHCI
reports a transfer event TRB with a completion code 6 which means
'Stall Error'.

In fact super speed USB hub descriptor type is 0x2a, not 0x29.
Sending correct SETUP packet to the hub makes it not stall anymore.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: xhci: Add input slot context in xhci_set_configuration()

A valid input slot context for a 'configure endpoint' command requires
the 'Context Entries' field to be initialized to the index of the last
valid endpoint context that is defined by the target configuration. We
set up the 'Context Entries' field, but we forget to include the input
slot context in the input control context 'Add Context flags' bitmap.
So xHC will simply ignore input slot context and continue using its own
which contains old information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: add static to local symbols

Sparse reports "... was not declared. Should it be static?"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>

Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.

Add test into xhci_submit_control_message for usb requesttype in USB
vendor request being of standardized type. This fixes detection of
certain USB fixes, for example Ethernet, USB 3.0 port. Non standardized
requesttype in USB vendor request will be ignored.

Signed-off-by: Ted Chen <tedchen@realtek.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>

dm: Rename dev_get_parentdata() to dev_get_parent_priv()

The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

usb: xhci: Fix a potential NULL pointer dereference

This patch fixes a potential NULL pointer dereference arising on
non-present/non-initialized xHCI controllers and adds some error
handling to xHCI code

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

dm: usb: Rename the XHCI HCD to U-Boot

This should be "U-Boot", not "u-boot".

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: Support driver model in XHCI

Add driver model support in the XHCI support code so that it can be used by
XHCI USB drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Factor out common init/uninit

Since driver model will want to use most of the same code for XHCI init
and uninit, put it in a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_setup_addressable_virt_dev()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_alloc_virt_device()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use a function to get xhci_ctrl

Rather than getting this directly from struct usb_device, call a function
to obtain it. This will make it possible for driver model to provide it
another way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: 64-bit architectures support for xHCI

This commit allows xHCI to use both 64 and 32 bit memory
physical addresses depending on architecture it's being built for.
Also it makes use of readq()/writeq() on 64-bit systems

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

linux/kernel.h: sync min, max, min3, max3 macros with Linux

U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does. This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
- Use min, max, min3, max3 only when the arguments have the same type
(or add casts to the arguments)
- Use min_t/max_t instead with the appropriate type for the first
argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>

usb: xhci: (likely) fix bracket in if condition

Because of the brackets the & and && is evaluated before
the comparison. This is likely not the intention. Change
it to test the first and second condition to both be true.

cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

usb: add enum usb_init_type parameter to usb_lowlevel_init

This parameter will later be used to verify OTG ports.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

USB: xHCI: Add stack support for xHCI

This adds stack layer for eXtensible Host Controller Interface
which facilitates use of USB 3.0 in host mode.

Adapting xHCI host controller driver in linux-kernel
by Sarah Sharp to needs in u-boot.

Initial porting from Linux kernel version 3.4, with following
top commit history of drivers/usb/host/xhci* :
cf84055 xHCI: Cleanup isoc transfer ring when TD length mismatch found

This adds the basic xHCI host controller driver with bare minimum
features:
- Control/Bulk transfer support has been added with required
infrastructure for necessary xHC data structures.
- Stream protocol hasn't been supported yet.
- No support for quirky devices has been added.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Set up endpoints for the first 2 interfaces

The xhci driver currently only does the necessary initialization for
endpoints found in the first interface descriptor. Apple USB keyboards
(released 2021) use the second interface descriptor for the HID keyboard
boot protocol. To allow USB drivers to use endpoints from other
interface descriptors the xhci driver needs to ensure these endpoints
are initialized as well.
Use USB_MAX_ACTIVE_INTERFACES to control how many interface descriptors
are considered during endpoint initialisation.
For now define it to 2 as that is sufficient for supporting the Apple
keyboards.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

usb: xhci: refactor xhci_set_configuration

In the next step endpoints for multiple interfaces are set up. Move most
of the per endpoint initialization to separate function to avoid another
identation level.

Reviewed-by: Marek Vasut <marex@denx.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Janne Grunau <j@jannau.net>

usb: xhci: Guard all calls to xhci_wait_for_event

xhci_wait_for_event returns NULL on timeout, so the caller always has to
check for that. This addresses immediate explosions in this part
of the code when timeouts happen, but not the root cause for the
timeout.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Fix double free on failure

drivers/core/device.c will call `device_free()` after xhci_register
already frees the private device data. This can cause a crash later
during the boot process, observed on aarch64 RPi4b as a synchronous
exception. All callers of xhci_register use priv_auto, so this won't
lead to memory leaks.

Signed-off-by: Richard Habeeb <richard.habeeb@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Fix root hub descriptor

When a system has multiple XHCI controllers, some of the
properties described in the descriptor of the root hub (such as
the number of ports) might differ between controllers. Fix this
by switching from a single global hub descriptor to a hub
descriptor per controller.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Implement DMA mapping

An XHCI controller that sits behind an IOMMU needs to map and unmap
its memory buffers to do DMA. Implement this by inroducing new
xhci_dma_map() and xhci_dma_unmap() helper functions. The
xhci_dma_map() function replaces the existing xhci_virt_to_bus()
function in the sense that it returns the bus address in the case
of simple address translation in the absence of an IOMMU. The
xhci_bus_to_virt() function is eliminated by storing the CPU
address of the allocated scratchpad memory in struct xhci_ctrl.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: Remove non-DM code in ehci-fsl and xhci

The DM_USB migration deadline has passed and this is not used in SPL.
Remove this now unused code.

Signed-off-by: Tom Rini <trini@konsulko.com>

doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

usb: xhci-pci: Move reset logic out of XHCI core

Resetting an XHCI controller inside xhci_register undoes any register
setup performed by the platform driver. And at least on the Allwinner
H6, resetting the XHCI controller also resets the PHY, which prevents
the controller from working. That means the controller must be taken out
of reset before initializing the PHY, which must be done before calling
xhci_register.

The logic in the XHCI core was added to support the Raspberry Pi 4
(although this was not mentioned in the commit log!), which uses the
xhci-pci platform driver. Move the reset logic to the platform driver,
where it belongs, and where it cannot interfere with other platform
drivers.

This also fixes a failure to call reset_free if xhci_register failed.

Fixes: 0b80371b350e ("usb: xhci: Add reset controller support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

xhci: translate virtual addresses into the bus's address space

So far we've been content with passing physical addresses when
configuring memory addresses into XHCI controllers, but not all
platforms have buses with transparent mappings. Specifically the
Raspberry Pi 4 might introduce an offset to memory accesses incoming
from its PCIe port.

Introduce xhci_virt_to_bus() and xhci_bus_to_virt() to cater with these
limitations, and make sure we don't break non DM users.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: fix compilation for 32 bit]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

fix from nicolas

usb: xhci: Include device_compat.h

This header is necessary for the dev_xxx macros.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

usb: xhci: convert to readx_poll_sleep_timeout()

Use readx_poll_sleep_timeout() to poll the register status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: use macros with parameter to fill ep_info2

Use macros with parameter to fill ep_info2, then some macros
for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: convert to HCS_MAX_PORTS()

Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add quirks flag to support MediaTek xHCI 0.96

There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reserved
DWs of slot context and endpoint context.
2. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add a member hci_version in xhci_ctrl struct

Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add virt_to_phys() to support mapped platforms

Some platforms, like MIPS Octeon, use mapped addresses (virtual address
!= physical address). On these platforms we need to make sure, that the
local virtual addresses are converted to physical (DMA) addresses for
the xHCI controller. This patch adds the missing virt_to_phys() calls,
so that the correct addresses are used.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Add reset controller support

Some atypical users of xhci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[mb: squash fix to only build xhci_reset_hw() if CONFIG_DM_BUS]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

xhci: mediatek: Add support for MTK xHCI host controller

This patch is used to support the on-chip xHCI controller on
MediaTek SoCs, currently control/bulk/interrupt transfers are
supported.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

common: Move ARM cache operations out of common.h

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not under drivers/usb/xhci

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

usb: Add nonblock argument to submit_int_msg

This will be used to implement non-blocking keyboard polling in case of
errors.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

usb: s/CONFIG_DM_USB/CONFIG_IS_ENABLED(DM_USB)/

This allows to disable the USB driver model in SPL because it checks
the CONFIG_SPL_DM_USB variable for SPL builds. Nothing changes for
regular non-SPL builds.

Signed-off-by: Sven Schwermer <sven@svenschwermer.de>

usb: xhci: Handle endianness in xhci_set_configuration()

In xhci_set_configuration(), 'Context Entries' field in the slot
context was cleared with mask LAST_CTX_MASK, but it should have
taken the endianness into consideration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix config fail of FS hub behind a HS hub with MTT

If a full speed hub connects to a high speed hub which supports MTT,
the MTT field of its slot context will be set to 1 when xHCI driver
setups an xHCI virtual device in xhci_setup_addressable_virt_dev().
Once usb core fetch its hub descriptor, and need to update the xHC's
internal data structures for the device, the HUB field of its slot
context will be set to 1 too, meanwhile MTT is also set before, this
will cause configure endpoint command fail. In the case, we should
clear MTT to 0 for full speed hub according to section 6.2.2.

This keeps in sync with Linux kernel commit:
096b110: usb: xhci: fix config fail of FS hub behind a HS hub with MTT

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Initialize dev_state to 0 in the input slot context

Per xHCI spec chapter 6.2.2 table 6-7, as input, software shall
initialize the dev_state field to '0'. Though this does not seem
to cause any issue with most xHC implementations, let's do this
to conform with the spec.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

usb: xhci: Set accurate add context flags when updating hub attributes

If a USB 3.0 hub is plugged into the root port of the xHC, the xHCI
driver will issue a 'Configure Endpoint' command to the xHC for it
to update its internal data structure for this hub device. The hub
attributes are in the slot context so we need tell xHC to update the
slot context by setting the add context flags of the input control
context to only cover the slot context.

At present the add context flags is or'ed with the slot context bit,
but it should really be accurately set to the slot context, as the
variable that holds the value of the add context flags comes from
whatever was set in the last command execution, which may contain
additional contexts that 'Configure Endpoint' command should not
touch. Some xHC implementations like x86 don't complain such, but
it was observed on Renesas RCar Gen3 platform that the RCar xHC
complains with a 'TRB error' completion codes as the response.

Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set 'Average TRB Length' to 8 for control endpoints

Update the codes to conform with xHCI spec chapter 6.2.3.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Set 'Error Count' to 0 for isoch endpoints

Per xHCI spec, 'Error Count' should be set to 0 for isoch endpoints.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Program max burst size for endpoint

The 'Max Burst Size' indicates to the xHC the maximum number of
consecutive USB transactions that should be executed per scheduling
opportunity. This is a “zero-based” value, where 0 to 15 represents
burst sizes of 1 to 16, but at present this is always set to zero.
Let's program the required value according to real needs.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Honor endpoint's interval

USB endpoint reports the period between consecutive requests to send
or receive data as bInverval in its endpoint descriptor. So far this
is ignored by xHCI driver and the 'Interval' field in xHC's endpoint
context is always programmed to zero which means 1ms for low speed
or full speed , or 125us for high speed or super speed. We should
honor the interval by getting it from endpoint descriptor.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix max packet size for full speed device endpoint 0

In xhci_check_maxpacket(), the control endpoint 0 max packet size
is wrongly taken from the interface's endpoint descriptor. However
the default endpoint 0 does not come with an endpoint descriptor
hence is not included in the interface structure. Change to use
epmaxpacketin[0] instead.

The other bug in this routine is that when setting max packet size
to the xHC endpoint 0 context, it does not clear its previous value
at all before programming a new one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add interrupt transfer support

xHCI uses normal TRBs for both bulk and interrupt. This adds the
missing interrupt transfer support to xHCI so that devices like
USB keyboard that uses interrupt transfer can work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

dm: usb: xhci: Implement get_max_xfer_size() operation

xHCD allocates one segment which includes 64 TRBs for each endpoint
and the last TRB in this segment is configured as a link TRB to form
a TRB ring. Each TRB can transfer up to 64K bytes, however data
buffers referenced by transfer TRBs shall not span 64KB boundaries.
Hence the maximum number of TRBs we can use in one transfer is 62.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Implement update_hub_device() operation

There is no way to know whether the attached device is a hub or
not in advance before the device's descriptor is fetched. But
once we know it's a high speed hub, per the xHCI spec, we need
to tell xHC it's a hub device by initializing hub-related fields
in the input slot context.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Change xhci_setup_addressable_virt_dev() signature

For future extension, change xhci_setup_addressable_virt_dev()
signature to accept a pointer to 'struct usb_device', instead
of its members slot_id & speed, as the struct already contains
these two plus some other useful information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: hub: Add a new API to test if a hub device is root hub

Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.

While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Get rid of CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS

xHC reports supported maximum number of ports in the HCSPARAMS1
register, so it's unnecessary to use a hardcoded config option
CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Change USB hub descriptor to match USB 3.0 hubs

USB 3.0 hubs have a slightly different hub descriptor than USB 2.0
hubs, with a fixed (rather than variable length) size. Change the
host controller drivers that access those last two fields
(DeviceRemovable and PortPowerCtrlMask) to use the union.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Send correct wValue to get hub descriptor of a USB 3.0 hub

Testing a USB 3.0 hub by connecting it to the xHCI port on Intel
MinnowMax, when issuing 'get hub descriptor' to the hub, xHCI
reports a transfer event TRB with a completion code 6 which means
'Stall Error'.

In fact super speed USB hub descriptor type is 0x2a, not 0x29.
Sending correct SETUP packet to the hub makes it not stall anymore.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: xhci: Add input slot context in xhci_set_configuration()

A valid input slot context for a 'configure endpoint' command requires
the 'Context Entries' field to be initialized to the index of the last
valid endpoint context that is defined by the target configuration. We
set up the 'Context Entries' field, but we forget to include the input
slot context in the input control context 'Add Context flags' bitmap.
So xHC will simply ignore input slot context and continue using its own
which contains old information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: add static to local symbols

Sparse reports "... was not declared. Should it be static?"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>

Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.

Add test into xhci_submit_control_message for usb requesttype in USB
vendor request being of standardized type. This fixes detection of
certain USB fixes, for example Ethernet, USB 3.0 port. Non standardized
requesttype in USB vendor request will be ignored.

Signed-off-by: Ted Chen <tedchen@realtek.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>

dm: Rename dev_get_parentdata() to dev_get_parent_priv()

The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

usb: xhci: Fix a potential NULL pointer dereference

This patch fixes a potential NULL pointer dereference arising on
non-present/non-initialized xHCI controllers and adds some error
handling to xHCI code

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

dm: usb: Rename the XHCI HCD to U-Boot

This should be "U-Boot", not "u-boot".

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: Support driver model in XHCI

Add driver model support in the XHCI support code so that it can be used by
XHCI USB drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Factor out common init/uninit

Since driver model will want to use most of the same code for XHCI init
and uninit, put it in a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_setup_addressable_virt_dev()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_alloc_virt_device()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use a function to get xhci_ctrl

Rather than getting this directly from struct usb_device, call a function
to obtain it. This will make it possible for driver model to provide it
another way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: 64-bit architectures support for xHCI

This commit allows xHCI to use both 64 and 32 bit memory
physical addresses depending on architecture it's being built for.
Also it makes use of readq()/writeq() on 64-bit systems

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

linux/kernel.h: sync min, max, min3, max3 macros with Linux

U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does. This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
- Use min, max, min3, max3 only when the arguments have the same type
(or add casts to the arguments)
- Use min_t/max_t instead with the appropriate type for the first
argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>

usb: xhci: (likely) fix bracket in if condition

Because of the brackets the & and && is evaluated before
the comparison. This is likely not the intention. Change
it to test the first and second condition to both be true.

cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

usb: add enum usb_init_type parameter to usb_lowlevel_init

This parameter will later be used to verify OTG ports.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

USB: xHCI: Add stack support for xHCI

This adds stack layer for eXtensible Host Controller Interface
which facilitates use of USB 3.0 in host mode.

Adapting xHCI host controller driver in linux-kernel
by Sarah Sharp to needs in u-boot.

Initial porting from Linux kernel version 3.4, with following
top commit history of drivers/usb/host/xhci* :
cf84055 xHCI: Cleanup isoc transfer ring when TD length mismatch found

This adds the basic xHCI host controller driver with bare minimum
features:
- Control/Bulk transfer support has been added with required
infrastructure for necessary xHC data structures.
- Stream protocol hasn't been supported yet.
- No support for quirky devices has been added.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Guard all calls to xhci_wait_for_event

xhci_wait_for_event returns NULL on timeout, so the caller always has to
check for that. This addresses immediate explosions in this part
of the code when timeouts happen, but not the root cause for the
timeout.

Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Fix double free on failure

drivers/core/device.c will call `device_free()` after xhci_register
already frees the private device data. This can cause a crash later
during the boot process, observed on aarch64 RPi4b as a synchronous
exception. All callers of xhci_register use priv_auto, so this won't
lead to memory leaks.

Signed-off-by: Richard Habeeb <richard.habeeb@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Fix root hub descriptor

When a system has multiple XHCI controllers, some of the
properties described in the descriptor of the root hub (such as
the number of ports) might differ between controllers. Fix this
by switching from a single global hub descriptor to a hub
descriptor per controller.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Implement DMA mapping

An XHCI controller that sits behind an IOMMU needs to map and unmap
its memory buffers to do DMA. Implement this by inroducing new
xhci_dma_map() and xhci_dma_unmap() helper functions. The
xhci_dma_map() function replaces the existing xhci_virt_to_bus()
function in the sense that it returns the bus address in the case
of simple address translation in the absence of an IOMMU. The
xhci_bus_to_virt() function is eliminated by storing the CPU
address of the allocated scratchpad memory in struct xhci_ctrl.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: Remove non-DM code in ehci-fsl and xhci

The DM_USB migration deadline has passed and this is not used in SPL.
Remove this now unused code.

Signed-off-by: Tom Rini <trini@konsulko.com>

doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

usb: xhci-pci: Move reset logic out of XHCI core

Resetting an XHCI controller inside xhci_register undoes any register
setup performed by the platform driver. And at least on the Allwinner
H6, resetting the XHCI controller also resets the PHY, which prevents
the controller from working. That means the controller must be taken out
of reset before initializing the PHY, which must be done before calling
xhci_register.

The logic in the XHCI core was added to support the Raspberry Pi 4
(although this was not mentioned in the commit log!), which uses the
xhci-pci platform driver. Move the reset logic to the platform driver,
where it belongs, and where it cannot interfere with other platform
drivers.

This also fixes a failure to call reset_free if xhci_register failed.

Fixes: 0b80371b350e ("usb: xhci: Add reset controller support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

xhci: translate virtual addresses into the bus's address space

So far we've been content with passing physical addresses when
configuring memory addresses into XHCI controllers, but not all
platforms have buses with transparent mappings. Specifically the
Raspberry Pi 4 might introduce an offset to memory accesses incoming
from its PCIe port.

Introduce xhci_virt_to_bus() and xhci_bus_to_virt() to cater with these
limitations, and make sure we don't break non DM users.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: fix compilation for 32 bit]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

fix from nicolas

usb: xhci: Include device_compat.h

This header is necessary for the dev_xxx macros.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

usb: xhci: convert to readx_poll_sleep_timeout()

Use readx_poll_sleep_timeout() to poll the register status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: use macros with parameter to fill ep_info2

Use macros with parameter to fill ep_info2, then some macros
for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: convert to HCS_MAX_PORTS()

Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add quirks flag to support MediaTek xHCI 0.96

There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reserved
DWs of slot context and endpoint context.
2. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add a member hci_version in xhci_ctrl struct

Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add virt_to_phys() to support mapped platforms

Some platforms, like MIPS Octeon, use mapped addresses (virtual address
!= physical address). On these platforms we need to make sure, that the
local virtual addresses are converted to physical (DMA) addresses for
the xHCI controller. This patch adds the missing virt_to_phys() calls,
so that the correct addresses are used.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Add reset controller support

Some atypical users of xhci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[mb: squash fix to only build xhci_reset_hw() if CONFIG_DM_BUS]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

xhci: mediatek: Add support for MTK xHCI host controller

This patch is used to support the on-chip xHCI controller on
MediaTek SoCs, currently control/bulk/interrupt transfers are
supported.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

common: Move ARM cache operations out of common.h

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not under drivers/usb/xhci

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

usb: Add nonblock argument to submit_int_msg

This will be used to implement non-blocking keyboard polling in case of
errors.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

usb: s/CONFIG_DM_USB/CONFIG_IS_ENABLED(DM_USB)/

This allows to disable the USB driver model in SPL because it checks
the CONFIG_SPL_DM_USB variable for SPL builds. Nothing changes for
regular non-SPL builds.

Signed-off-by: Sven Schwermer <sven@svenschwermer.de>

usb: xhci: Handle endianness in xhci_set_configuration()

In xhci_set_configuration(), 'Context Entries' field in the slot
context was cleared with mask LAST_CTX_MASK, but it should have
taken the endianness into consideration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix config fail of FS hub behind a HS hub with MTT

If a full speed hub connects to a high speed hub which supports MTT,
the MTT field of its slot context will be set to 1 when xHCI driver
setups an xHCI virtual device in xhci_setup_addressable_virt_dev().
Once usb core fetch its hub descriptor, and need to update the xHC's
internal data structures for the device, the HUB field of its slot
context will be set to 1 too, meanwhile MTT is also set before, this
will cause configure endpoint command fail. In the case, we should
clear MTT to 0 for full speed hub according to section 6.2.2.

This keeps in sync with Linux kernel commit:
096b110: usb: xhci: fix config fail of FS hub behind a HS hub with MTT

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Initialize dev_state to 0 in the input slot context

Per xHCI spec chapter 6.2.2 table 6-7, as input, software shall
initialize the dev_state field to '0'. Though this does not seem
to cause any issue with most xHC implementations, let's do this
to conform with the spec.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

usb: xhci: Set accurate add context flags when updating hub attributes

If a USB 3.0 hub is plugged into the root port of the xHC, the xHCI
driver will issue a 'Configure Endpoint' command to the xHC for it
to update its internal data structure for this hub device. The hub
attributes are in the slot context so we need tell xHC to update the
slot context by setting the add context flags of the input control
context to only cover the slot context.

At present the add context flags is or'ed with the slot context bit,
but it should really be accurately set to the slot context, as the
variable that holds the value of the add context flags comes from
whatever was set in the last command execution, which may contain
additional contexts that 'Configure Endpoint' command should not
touch. Some xHC implementations like x86 don't complain such, but
it was observed on Renesas RCar Gen3 platform that the RCar xHC
complains with a 'TRB error' completion codes as the response.

Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set 'Average TRB Length' to 8 for control endpoints

Update the codes to conform with xHCI spec chapter 6.2.3.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Set 'Error Count' to 0 for isoch endpoints

Per xHCI spec, 'Error Count' should be set to 0 for isoch endpoints.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Program max burst size for endpoint

The 'Max Burst Size' indicates to the xHC the maximum number of
consecutive USB transactions that should be executed per scheduling
opportunity. This is a “zero-based” value, where 0 to 15 represents
burst sizes of 1 to 16, but at present this is always set to zero.
Let's program the required value according to real needs.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Honor endpoint's interval

USB endpoint reports the period between consecutive requests to send
or receive data as bInverval in its endpoint descriptor. So far this
is ignored by xHCI driver and the 'Interval' field in xHC's endpoint
context is always programmed to zero which means 1ms for low speed
or full speed , or 125us for high speed or super speed. We should
honor the interval by getting it from endpoint descriptor.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix max packet size for full speed device endpoint 0

In xhci_check_maxpacket(), the control endpoint 0 max packet size
is wrongly taken from the interface's endpoint descriptor. However
the default endpoint 0 does not come with an endpoint descriptor
hence is not included in the interface structure. Change to use
epmaxpacketin[0] instead.

The other bug in this routine is that when setting max packet size
to the xHC endpoint 0 context, it does not clear its previous value
at all before programming a new one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add interrupt transfer support

xHCI uses normal TRBs for both bulk and interrupt. This adds the
missing interrupt transfer support to xHCI so that devices like
USB keyboard that uses interrupt transfer can work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

dm: usb: xhci: Implement get_max_xfer_size() operation

xHCD allocates one segment which includes 64 TRBs for each endpoint
and the last TRB in this segment is configured as a link TRB to form
a TRB ring. Each TRB can transfer up to 64K bytes, however data
buffers referenced by transfer TRBs shall not span 64KB boundaries.
Hence the maximum number of TRBs we can use in one transfer is 62.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Implement update_hub_device() operation

There is no way to know whether the attached device is a hub or
not in advance before the device's descriptor is fetched. But
once we know it's a high speed hub, per the xHCI spec, we need
to tell xHC it's a hub device by initializing hub-related fields
in the input slot context.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Change xhci_setup_addressable_virt_dev() signature

For future extension, change xhci_setup_addressable_virt_dev()
signature to accept a pointer to 'struct usb_device', instead
of its members slot_id & speed, as the struct already contains
these two plus some other useful information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: hub: Add a new API to test if a hub device is root hub

Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.

While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Get rid of CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS

xHC reports supported maximum number of ports in the HCSPARAMS1
register, so it's unnecessary to use a hardcoded config option
CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Change USB hub descriptor to match USB 3.0 hubs

USB 3.0 hubs have a slightly different hub descriptor than USB 2.0
hubs, with a fixed (rather than variable length) size. Change the
host controller drivers that access those last two fields
(DeviceRemovable and PortPowerCtrlMask) to use the union.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Send correct wValue to get hub descriptor of a USB 3.0 hub

Testing a USB 3.0 hub by connecting it to the xHCI port on Intel
MinnowMax, when issuing 'get hub descriptor' to the hub, xHCI
reports a transfer event TRB with a completion code 6 which means
'Stall Error'.

In fact super speed USB hub descriptor type is 0x2a, not 0x29.
Sending correct SETUP packet to the hub makes it not stall anymore.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: xhci: Add input slot context in xhci_set_configuration()

A valid input slot context for a 'configure endpoint' command requires
the 'Context Entries' field to be initialized to the index of the last
valid endpoint context that is defined by the target configuration. We
set up the 'Context Entries' field, but we forget to include the input
slot context in the input control context 'Add Context flags' bitmap.
So xHC will simply ignore input slot context and continue using its own
which contains old information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: add static to local symbols

Sparse reports "... was not declared. Should it be static?"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>

Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.

Add test into xhci_submit_control_message for usb requesttype in USB
vendor request being of standardized type. This fixes detection of
certain USB fixes, for example Ethernet, USB 3.0 port. Non standardized
requesttype in USB vendor request will be ignored.

Signed-off-by: Ted Chen <tedchen@realtek.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>

dm: Rename dev_get_parentdata() to dev_get_parent_priv()

The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

usb: xhci: Fix a potential NULL pointer dereference

This patch fixes a potential NULL pointer dereference arising on
non-present/non-initialized xHCI controllers and adds some error
handling to xHCI code

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

dm: usb: Rename the XHCI HCD to U-Boot

This should be "U-Boot", not "u-boot".

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: Support driver model in XHCI

Add driver model support in the XHCI support code so that it can be used by
XHCI USB drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Factor out common init/uninit

Since driver model will want to use most of the same code for XHCI init
and uninit, put it in a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_setup_addressable_virt_dev()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_alloc_virt_device()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use a function to get xhci_ctrl

Rather than getting this directly from struct usb_device, call a function
to obtain it. This will make it possible for driver model to provide it
another way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: 64-bit architectures support for xHCI

This commit allows xHCI to use both 64 and 32 bit memory
physical addresses depending on architecture it's being built for.
Also it makes use of readq()/writeq() on 64-bit systems

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

linux/kernel.h: sync min, max, min3, max3 macros with Linux

U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does. This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
- Use min, max, min3, max3 only when the arguments have the same type
(or add casts to the arguments)
- Use min_t/max_t instead with the appropriate type for the first
argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>

usb: xhci: (likely) fix bracket in if condition

Because of the brackets the & and && is evaluated before
the comparison. This is likely not the intention. Change
it to test the first and second condition to both be true.

cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

usb: add enum usb_init_type parameter to usb_lowlevel_init

This parameter will later be used to verify OTG ports.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

USB: xHCI: Add stack support for xHCI

This adds stack layer for eXtensible Host Controller Interface
which facilitates use of USB 3.0 in host mode.

Adapting xHCI host controller driver in linux-kernel
by Sarah Sharp to needs in u-boot.

Initial porting from Linux kernel version 3.4, with following
top commit history of drivers/usb/host/xhci* :
cf84055 xHCI: Cleanup isoc transfer ring when TD length mismatch found

This adds the basic xHCI host controller driver with bare minimum
features:
- Control/Bulk transfer support has been added with required
infrastructure for necessary xHC data structures.
- Stream protocol hasn't been supported yet.
- No support for quirky devices has been added.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Fix double free on failure

drivers/core/device.c will call `device_free()` after xhci_register
already frees the private device data. This can cause a crash later
during the boot process, observed on aarch64 RPi4b as a synchronous
exception. All callers of xhci_register use priv_auto, so this won't
lead to memory leaks.

Signed-off-by: Richard Habeeb <richard.habeeb@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Fix root hub descriptor

When a system has multiple XHCI controllers, some of the
properties described in the descriptor of the root hub (such as
the number of ports) might differ between controllers. Fix this
by switching from a single global hub descriptor to a hub
descriptor per controller.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: xhci: Implement DMA mapping

An XHCI controller that sits behind an IOMMU needs to map and unmap
its memory buffers to do DMA. Implement this by inroducing new
xhci_dma_map() and xhci_dma_unmap() helper functions. The
xhci_dma_map() function replaces the existing xhci_virt_to_bus()
function in the sense that it returns the bus address in the case
of simple address translation in the absence of an IOMMU. The
xhci_bus_to_virt() function is eliminated by storing the CPU
address of the allocated scratchpad memory in struct xhci_ctrl.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: Remove non-DM code in ehci-fsl and xhci

The DM_USB migration deadline has passed and this is not used in SPL.
Remove this now unused code.

Signed-off-by: Tom Rini <trini@konsulko.com>

doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

usb: xhci-pci: Move reset logic out of XHCI core

Resetting an XHCI controller inside xhci_register undoes any register
setup performed by the platform driver. And at least on the Allwinner
H6, resetting the XHCI controller also resets the PHY, which prevents
the controller from working. That means the controller must be taken out
of reset before initializing the PHY, which must be done before calling
xhci_register.

The logic in the XHCI core was added to support the Raspberry Pi 4
(although this was not mentioned in the commit log!), which uses the
xhci-pci platform driver. Move the reset logic to the platform driver,
where it belongs, and where it cannot interfere with other platform
drivers.

This also fixes a failure to call reset_free if xhci_register failed.

Fixes: 0b80371b350e ("usb: xhci: Add reset controller support")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

xhci: translate virtual addresses into the bus's address space

So far we've been content with passing physical addresses when
configuring memory addresses into XHCI controllers, but not all
platforms have buses with transparent mappings. Specifically the
Raspberry Pi 4 might introduce an offset to memory accesses incoming
from its PCIe port.

Introduce xhci_virt_to_bus() and xhci_bus_to_virt() to cater with these
limitations, and make sure we don't break non DM users.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
[mb: fix compilation for 32 bit]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

fix from nicolas

usb: xhci: Include device_compat.h

This header is necessary for the dev_xxx macros.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

usb: xhci: convert to readx_poll_sleep_timeout()

Use readx_poll_sleep_timeout() to poll the register status

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: use macros with parameter to fill ep_info2

Use macros with parameter to fill ep_info2, then some macros
for MASK and SHIFT can be removed

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: convert to HCS_MAX_PORTS()

Use HCS_MAX_PORTS(p) instead of
((p & HCS_MAX_PORTS_MASK) >> HCS_MAX_PORTS_SHIFT)

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add quirks flag to support MediaTek xHCI 0.96

There some vendor quirks for MTK xHCI 0.96 host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reserved
DWs of slot context and endpoint context.
2. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: add a member hci_version in xhci_ctrl struct

Add a member to save xHCI version, it's used some times.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add virt_to_phys() to support mapped platforms

Some platforms, like MIPS Octeon, use mapped addresses (virtual address
!= physical address). On these platforms we need to make sure, that the
local virtual addresses are converted to physical (DMA) addresses for
the xHCI controller. This patch adds the missing virt_to_phys() calls,
so that the correct addresses are used.

Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>

usb: xhci: Add reset controller support

Some atypical users of xhci might need to manually reset their xHCI
controller before starting the HCD setup. Check if a reset controller
device is available to the PCI bus and trigger a reset.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
[mb: squash fix to only build xhci_reset_hw() if CONFIG_DM_BUS]
Signed-off-by: Matthias Brugger <mbrugger@suse.com>

common: Drop linux/bitops.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop linux/bug.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

xhci: mediatek: Add support for MTK xHCI host controller

This patch is used to support the on-chip xHCI controller on
MediaTek SoCs, currently control/bulk/interrupt transfers are
supported.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>

common: Move ARM cache operations out of common.h

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

usb: xhci: move xhci.h to include usb

The xhci.h header file is currently located under drivers/usb/xhci
Move it to the include/usb folder to make it available to drivers that
are not under drivers/usb/xhci

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>

usb: Add nonblock argument to submit_int_msg

This will be used to implement non-blocking keyboard polling in case of
errors.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>

usb: s/CONFIG_DM_USB/CONFIG_IS_ENABLED(DM_USB)/

This allows to disable the USB driver model in SPL because it checks
the CONFIG_SPL_DM_USB variable for SPL builds. Nothing changes for
regular non-SPL builds.

Signed-off-by: Sven Schwermer <sven@svenschwermer.de>

usb: xhci: Handle endianness in xhci_set_configuration()

In xhci_set_configuration(), 'Context Entries' field in the slot
context was cleared with mask LAST_CTX_MASK, but it should have
taken the endianness into consideration.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix config fail of FS hub behind a HS hub with MTT

If a full speed hub connects to a high speed hub which supports MTT,
the MTT field of its slot context will be set to 1 when xHCI driver
setups an xHCI virtual device in xhci_setup_addressable_virt_dev().
Once usb core fetch its hub descriptor, and need to update the xHC's
internal data structures for the device, the HUB field of its slot
context will be set to 1 too, meanwhile MTT is also set before, this
will cause configure endpoint command fail. In the case, we should
clear MTT to 0 for full speed hub according to section 6.2.2.

This keeps in sync with Linux kernel commit:
096b110: usb: xhci: fix config fail of FS hub behind a HS hub with MTT

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Initialize dev_state to 0 in the input slot context

Per xHCI spec chapter 6.2.2 table 6-7, as input, software shall
initialize the dev_state field to '0'. Though this does not seem
to cause any issue with most xHC implementations, let's do this
to conform with the spec.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

usb: xhci: Set accurate add context flags when updating hub attributes

If a USB 3.0 hub is plugged into the root port of the xHC, the xHCI
driver will issue a 'Configure Endpoint' command to the xHC for it
to update its internal data structure for this hub device. The hub
attributes are in the slot context so we need tell xHC to update the
slot context by setting the add context flags of the input control
context to only cover the slot context.

At present the add context flags is or'ed with the slot context bit,
but it should really be accurately set to the slot context, as the
variable that holds the value of the add context flags comes from
whatever was set in the last command execution, which may contain
additional contexts that 'Configure Endpoint' command should not
touch. Some xHC implementations like x86 don't complain such, but
it was observed on Renesas RCar Gen3 platform that the RCar xHC
complains with a 'TRB error' completion codes as the response.

Reported-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Marek Vasut <marek.vasut@gmail.com>
Tested-by: Matthias Blankertz <matthias.blankertz@cetitec.com>

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Set 'Average TRB Length' to 8 for control endpoints

Update the codes to conform with xHCI spec chapter 6.2.3.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Set 'Error Count' to 0 for isoch endpoints

Per xHCI spec, 'Error Count' should be set to 0 for isoch endpoints.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Program max burst size for endpoint

The 'Max Burst Size' indicates to the xHC the maximum number of
consecutive USB transactions that should be executed per scheduling
opportunity. This is a “zero-based” value, where 0 to 15 represents
burst sizes of 1 to 16, but at present this is always set to zero.
Let's program the required value according to real needs.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Honor endpoint's interval

USB endpoint reports the period between consecutive requests to send
or receive data as bInverval in its endpoint descriptor. So far this
is ignored by xHCI driver and the 'Interval' field in xHC's endpoint
context is always programmed to zero which means 1ms for low speed
or full speed , or 125us for high speed or super speed. We should
honor the interval by getting it from endpoint descriptor.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Fix max packet size for full speed device endpoint 0

In xhci_check_maxpacket(), the control endpoint 0 max packet size
is wrongly taken from the interface's endpoint descriptor. However
the default endpoint 0 does not come with an endpoint descriptor
hence is not included in the interface structure. Change to use
epmaxpacketin[0] instead.

The other bug in this routine is that when setting max packet size
to the xHC endpoint 0 context, it does not clear its previous value
at all before programming a new one.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Add interrupt transfer support

xHCI uses normal TRBs for both bulk and interrupt. This adds the
missing interrupt transfer support to xHCI so that devices like
USB keyboard that uses interrupt transfer can work.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

dm: usb: xhci: Implement get_max_xfer_size() operation

xHCD allocates one segment which includes 64 TRBs for each endpoint
and the last TRB in this segment is configured as a link TRB to form
a TRB ring. Each TRB can transfer up to 64K bytes, however data
buffers referenced by transfer TRBs shall not span 64KB boundaries.
Hence the maximum number of TRBs we can use in one transfer is 62.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Implement update_hub_device() operation

There is no way to know whether the attached device is a hub or
not in advance before the device's descriptor is fetched. But
once we know it's a high speed hub, per the xHCI spec, we need
to tell xHC it's a hub device by initializing hub-related fields
in the input slot context.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: xhci: Change xhci_setup_addressable_virt_dev() signature

For future extension, change xhci_setup_addressable_virt_dev()
signature to accept a pointer to 'struct usb_device', instead
of its members slot_id & speed, as the struct already contains
these two plus some other useful information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

usb: hub: Add a new API to test if a hub device is root hub

Sometimes we need know if a given hub device is root hub or not.
Add a new API to test this. This removes the xHCI driver's own
version is_root_hub() and change to use the new API.

While we are here, remove the unused/commented out get_usb_device()
in the xHCI driver too.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>

usb: xhci: Get rid of CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS

xHC reports supported maximum number of ports in the HCSPARAMS1
register, so it's unnecessary to use a hardcoded config option
CONFIG_SYS_USB_XHCI_MAX_ROOT_PORTS.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Change USB hub descriptor to match USB 3.0 hubs

USB 3.0 hubs have a slightly different hub descriptor than USB 2.0
hubs, with a fixed (rather than variable length) size. Change the
host controller drivers that access those last two fields
(DeviceRemovable and PortPowerCtrlMask) to use the union.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: hub: Send correct wValue to get hub descriptor of a USB 3.0 hub

Testing a USB 3.0 hub by connecting it to the xHCI port on Intel
MinnowMax, when issuing 'get hub descriptor' to the hub, xHCI
reports a transfer event TRB with a completion code 6 which means
'Stall Error'.

In fact super speed USB hub descriptor type is 0x2a, not 0x29.
Sending correct SETUP packet to the hub makes it not stall anymore.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: xhci: Add input slot context in xhci_set_configuration()

A valid input slot context for a 'configure endpoint' command requires
the 'Context Entries' field to be initialized to the index of the last
valid endpoint context that is defined by the target configuration. We
set up the 'Context Entries' field, but we forget to include the input
slot context in the input control context 'Add Context flags' bitmap.
So xHC will simply ignore input slot context and continue using its own
which contains old information of the device.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>

usb: add static to local symbols

Sparse reports "... was not declared. Should it be static?"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

treewide: replace #include <asm-generic/errno.h> with <linux/errno.h>

Now, include/linux/errno.h is a wrapper of <asm-generic/errno.h>.
Replace all include directives for <asm-generic/errno.h> with
<linux/errno.h>.

<asm-generic/...> is supposed to be included from <asm/...> when
arch-headers fall back into generic implementation. Generally, they
should not be directly included from .c files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Add drivers/usb/host/xhci-rockchip.c]
Signed-off-by: Tom Rini <trini@konsulko.com>

usb: xhci: Fix vendor command error if the request type is USB_REQ_SET_ADDRESS or USB_REQ_SET_CONFIGURATION.

Add test into xhci_submit_control_message for usb requesttype in USB
vendor request being of standardized type. This fixes detection of
certain USB fixes, for example Ethernet, USB 3.0 port. Non standardized
requesttype in USB vendor request will be ignored.

Signed-off-by: Ted Chen <tedchen@realtek.com>
Tested-by: Anand Moon <linux.amoon@gmail.com>

dm: Rename dev_get_parentdata() to dev_get_parent_priv()

The current name is inconsistent with other driver model data access
functions. Rename it and fix up all users.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

usb: xhci: Fix a potential NULL pointer dereference

This patch fixes a potential NULL pointer dereference arising on
non-present/non-initialized xHCI controllers and adds some error
handling to xHCI code

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

dm: usb: Rename the XHCI HCD to U-Boot

This should be "U-Boot", not "u-boot".

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: Support driver model in XHCI

Add driver model support in the XHCI support code so that it can be used by
XHCI USB drivers.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Factor out common init/uninit

Since driver model will want to use most of the same code for XHCI init
and uninit, put it in a separate function.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_setup_addressable_virt_dev()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use explicit parameters for xhci_alloc_virt_device()

This function should not be delving into struct usb_device. Pass in the
parameters it needs directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

dm: usb: xhci: Use a function to get xhci_ctrl

Rather than getting this directly from struct usb_device, call a function
to obtain it. This will make it possible for driver model to provide it
another way.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

usb: 64-bit architectures support for xHCI

This commit allows xHCI to use both 64 and 32 bit memory
physical addresses depending on architecture it's being built for.
Also it makes use of readq()/writeq() on 64-bit systems

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

linux/kernel.h: sync min, max, min3, max3 macros with Linux

U-Boot has never cared about the type when we get max/min of two
values, but Linux Kernel does. This commit gets min, max, min3, max3
macros synced with the kernel introducing type checks.

Many of references of those macros must be fixed to suppress warnings.
We have two options:
- Use min, max, min3, max3 only when the arguments have the same type
(or add casts to the arguments)
- Use min_t/max_t instead with the appropriate type for the first
argument

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Pavel Machek <pavel@denx.de>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Tested-by: Lukasz Majewski <l.majewski@samsung.com>
[trini: Fixup arch/blackfin/lib/string.c]
Signed-off-by: Tom Rini <trini@ti.com>

usb: xhci: (likely) fix bracket in if condition

Because of the brackets the & and && is evaluated before
the comparison. This is likely not the intention. Change
it to test the first and second condition to both be true.

cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

usb: add enum usb_init_type parameter to usb_lowlevel_init

This parameter will later be used to verify OTG ports.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

USB: xHCI: Add stack support for xHCI

This adds stack layer for eXtensible Host Controller Interface
which facilitates use of USB 3.0 in host mode.

Adapting xHCI host controller driver in linux-kernel
by Sarah Sharp to needs in u-boot.

Initial porting from Linux kernel version 3.4, with following
top commit history of drivers/usb/host/xhci* :
cf84055 xHCI: Cleanup isoc transfer ring when TD length mismatch found

This adds the basic xHCI host controller driver with bare minimum
features:
- Control/Bulk transfer support has been added with required
infrastructure for necessary xHC data structures.
- Stream protocol hasn't been supported yet.
- No support for quirky devices has been added.

Signed-off-by: Vikas C Sajjan <vikas.sajjan@samsung.com>
Signed-off-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>