The condition to compare the labels was twisted.
Change-Id: I34a665aa87e2ff0480eda0f249bbbea8a8fe68d8
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1941
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Slightly more complete keymap
Change-Id: I4fef6b8f75ab07cb20a3a8ccd7eaad81c9fe719f
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1922
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
We have to free TDs more carefully if they have been processed by the
controller yet. The current code tries to force the controller to post
them back to the done queue, but that seems wrong. We can't be sure,
when they get written back. This resulted in leaking TDs with an invalid
reference to a freed interrupt queue.
The new approach: Mark the interrupt queue to be destroyed and handle
the freeing later, when the controller posted the last TD to the done
queue.
Change-Id: I79d80a9dc89e1ca79dc125c4bbccbf23664227b3
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1905
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The connection state detection in the OHCI root hub driver was broken if
you used more than one device per root hub.
Change-Id: Ica5c735426beac45ef6f591ce68a72d8283a00f5
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1904
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
If somethings goes wrong during an interrupt transfer, drop the
transfer.
Change-Id: I450c08a7a0bf23fbee74237e0355d4a726ace114
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1901
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
If usb_poll() isn't called fast enough, the UHCI controller marks an
underrun interrupt queue as done (terminating the queue at the head).
We can recover from this situation, when usb_poll() gets called again,
and the queue is processed.
Change-Id: Id56c9df44d6dbd53cd30ad89dfb5bf5977799829
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1898
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The linking of interrupt queues into UHCI controller's framelist (in
uhci_create_intr_queue()) was incomplete. The implementation of
uhci_destroy_intr_queue() was even worse, looking like it wanted to
clean up more than uhci_create_intr_queue() did.
This patch follows the simple approach that we used for OHCI and EHCI:
Each slot in the framelist holds only one interrupt queue. Therefore, we
have to look for free slots each time we want to link an interrupt queue
into the framelist. In return, we have a much simpler structured
framelist.
With this, USB devices using interrupt transfers (e.g. keyboards) can be
detached cleanly from UHCI controllers. Also, more than one of such
devices can be attached without further risk.
Change-Id: I07b81a3b6f2cb3ff69515c973b3ae6321ad969aa
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1897
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
The USB HID driver had some static variables with keyboard state. This
moves them to the driver's instance, so multiple attached keyboards
don't effect each other.
Change-Id: I3f1ccfdea95062b443cebe510abf2f72fdeb1916
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1907
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
Prevent race conditions, when an interrupt-queue underrun occurred and
the controller is currently working on our queue head or a transfer is
still in progress.
Change-Id: Ia14f80a08071306ee5d1349780be081bfacb206a
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1902
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
When a USB hub got removed, we should also remove all devices that
were attached to it.
Change-Id: I73c0da1b7570f1af9726925ca222781b3d752557
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1903
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
If an endpoint gets stalled by an MSC device, after successful
transmission of a command (CBW), we should still ask for the status
(CSW). Otherwise, the driver and the device get desynchronized on the
command tags.
Change-Id: I53167f22c43b3a237cb4539b3affe37799378b93
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1900
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
Stalled transfers are not fatal, so don't spew on the console on every
tiny failure.
Change-Id: I175c1e83a6af09c1abbd43d045ed6dbf0c79f871
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1899
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
dump_td() is orphaned but looks useful => commented out.
The delay identifier shadowed the global one => renamed to total_delay.
Change-Id: I4f3766a07db9194b2552ebf9302bd7ef8a66371f
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1895
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
We can trust free() and memset() to work correctly on volatile
references, so cast volatile pointers to (void *) when calling them.
Change-Id: Ieff7f78133b72f303349cca0a0ca3bbf37ec52bb
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1896
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
usb_controller_initialize() is not declared in any header file nor
called from outside of usbinit.c, so make it static.
set_configuration() looks like beeing non-static on purpose (like the
other helpers around it in usb.c), so put a prototype into usb.h.
Change-Id: I08d93b3769d8398bb43462d9afdfeec81fef93ec
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1894
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
We had mixed virtual and physical pointers in struct sysinfo_t. Some
being virtual by accident which led to problems when we tried to
reinitialize lib_sysinfo after relocating FILO (to get intentionally
virtual pointers valid again). I guess this didn't cause much trouble
before, as lib_get_sysinfo() was always called with physical addresses
being equal to their virtual counterparts.
For FILO, two possibilities seem practical: Either, have all pointers in
struct sysinfo_t physical, so relocation doesn't hurt. Or, have all
pointers virtual and call lib_get_sysinfo() again after relocation.
This patch goes the latter way, changing the following pointers for
situations where virtual pointers differ from physical:
.extra_version
.build
.compile_time
.compile_by
.compile_host
.compile_domain
.compiler
.linker
.assembler
.cb_version
.vdat_addr
.tstamp_table
.cbmem_cons
.mrc_cache
We could also just correct the accidentally virtual pointers. But, IMO,
this would lower the risk of future confusion.
Note 1: Looks like .version gets never set.
Note 2: .option_table and .framebuffer were virtual pointers but treated
like physical ones. Even in FILO, this led to no problems as
they were set before relocation.
Change-Id: I4c456f56f049d9f8fc40e62520b1d8ec3dad48f8
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1855
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
uhci_reset() differs in semantics compared to the other HCI's reset()
implementations. uhci_reset() does some initialization work after a
controller reset. So move the initialization part to a new function,
uhci_reinit(), which get's exported through a new entry in hci_t:
hci_t.init().
Warning: This breaks code that relies on the current, special,
counterintuitive behaviour of uhci_reset(). If one wants a working host
controller after calling hci_t.reset(), he should call hci_t.init()
afterwards.
Change-Id: Ia7ce80865d12d11157645ce251f77f349f8e3c34
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1851
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
When ohci_reset() was implemented, OHCI controllers stopped working
since the stub ohci_reset() is called at the end of ohci_init().
This is fixed by removing the call. To prevent further problems the call
to the xhci_reset() stub is removed, too.
Change-Id: If89825c8e6caf40f7f4fe078e8b2e90054a54ba2
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1850
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
All shutdown() implementations but ehci_shutdown() free the hci_t
structure. This seems correct and the reference to the hci_t shouldn't
be used after shutdown(), so do it in ehci_shutdown(), too.
Change-Id: Ie3506d769e73007735f3211710734a5f0107e43a
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1849
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
FILO can use this as offset to enumerate AHCI and its own IDE
devices together.
Change-Id: I57380e7bd1df6db5c882427e9a34d068f4348fb2
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1846
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This makes their names more consistent with other constants in this header,
avoids name collisions, and makes it more obvious where the names came from.
Change-Id: I7b8bd4ada0fbaf049f35759a907281265f5bb2e6
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1729
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
Added ehci_reset() function to do a full reset of
the host controller
Change-Id: Ia48db8462ebbb8f260813eb6ba8349d002c4678b
Signed-off-by: Anton Kochkov <a.kochkov@securitycode.ru>
Reviewed-on: http://review.coreboot.org/1814
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This is useful if you need to put some text in a particular place on the
screen, for instance in the middle.
Change-Id: I3dae6b62ca1917c5020ffa3e8115ea7e8e5c0643
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1734
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
It's possible to want to display text on the display without using it as a
console. This change separates the initialization of the video code from
setting up the video console by pulling out everything but installing the
console into a new function called video_init.
Change-Id: Ie07654ca13f79489c0e9b3a4998b96f598ab8513
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1733
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Change-Id: I1489b5306ef1ca078686fed4dba2d242f70ad941
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1727
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The endianness of an architecture is now set up automatically using Kconfig
and some common code. The available conversion functions were also expanded
to go to or from a particular endianness. Those use the abbreviation le or be
for little or big endian.
Built for Stumpy and saw coreinfo cbfs support work which uses network
byte order. Used the functions which convert to little endian to implement an
AHCI driver. The source arch is also little endian, so they were effectively
(and successfully) inert.
Change-Id: I3a2d2403855b3e0e93fa34f45e8e542b3e5afeac
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1719
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
The "debug" macro used internally in the libpayload USB subsystem was very
generically named and would leak into consumers of the library that included
usb.h directly or indirectly. This change turns that #define from a macro into
a static inline function to move away from the preprocessor, and also renames
it to usb_debug so it's less likely to collide with something unrelated.
Change-Id: I18717df111aa9671495f8a2a5bdb2c6311fa7acf
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1738
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
While it might be slightly more convenient to not have to call usb_poll
manually after calling usb_initialize, you'll still likely want to call it
before trying to use a USB device since one have have been hotplugged since
you last looked. By not calling usb_poll, usb_initialize completes quickly and
can be called unconditionally without a long delay. The delay can be put off
until later when we're sure it's necessary.
Change-Id: Ib8b1bdea996702c42d1b7021f492d9f8e174d304
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1737
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
The usb_initialize function would scan for USB host controllers by brute force
iterating over all possible busses, devices, and functions. This change makes
it recursively scan busses only if it finds them on the other side of a bridge,
and only scan for functions beyond function 0 if the device claims to be
multifunction.
This change also takes the opportunity to clean up some style problems
throughout the file.
Change-Id: I0f5e8b9a454a42a76d30bccca898c8e1af770b2b
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1736
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
This information is now stored in a structure instead of in a few seperate
fields. libpayload hadn't been updated to reflect the new layout or to consume
the new information intelligently.
Change-Id: Ice3486ffcdcdbe1f16f9c84515120c591d8dc882
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1724
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Tested-by: build bot (Jenkins)
This adds a new interface for storage devices. A driver for ATA and
ATAPI drives on AHCI host controllers comes along.
The interface is very simple and was designed to match FILO's needs.
It consists of three functions:
void storage_initialize(void);
Initializes controllers. Should be called once at startup.
storage_poll_t storage_probe(size_t dev_num);
with typedef enum {
POLL_NO_DEVICE = -2,
POLL_ERROR = -1,
POLL_NO_MEDIUM = 0,
POLL_MEDIUM_PRESENT = 1,
} storage_poll_t;
Looks for a drive with number dev_num (drives are counted from
zero) and polls for a medium in the drive if appropriate.
int storage_read_blocks512(size_t dev_num,
u64 start, size_t count,
unsigned char *buf);
Reads count blocks of 512 bytes from block start of drive dev_num
into buf.
Change-Id: I1c85796b7f8e379ff3817a61b1837636b57e182b
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1622
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Peter Stuge <peter@stuge.se>
Instead of having the highlevel functions make use of the lowlevel
functions, it implemented the lowlevel stuff in terms of highlevel.
Change-Id: I530bfe3cbc6f57a6294d86fbf1739e06467a2318
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1539
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Previously we assume that hardware using 8 bits
per char by default, but on Asrock A53 Pro
this is not true (7 bit per char by default).
Forcing use 8n1 now.
Change-Id: Ib701725d2ec6dacd7862016b2045270956b27029
Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-on: http://review.coreboot.org/1541
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
The handling of finalize in uhci_bulk was confusing, and so its
behaviour changed.
If set, the driver is supposed to add a trailing empty packet iff
the last packet is of maximum packet size. This helps the device to
decide if the transfer is completed simply by waiting for a packet
that isn't full length.
Change-Id: I162e8c1e034924d0de6fdcb971c94cf3a5ea31eb
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/1555
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
Fixed masking to run QH shedule.
Fixed final zero filled TD generation for
UHCI bulk transaction.
Change-Id: I9c6ea34d132368922f2eeeaa7aadbbb6aac3e2b8
Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-on: http://review.coreboot.org/1553
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
libpayload already contained a number of functions for convenient
access to CMOS configuration. Add functions to support iteration
over available enum fields.
Change-Id: If95f45d7223d2e19c42f1d8680c12d23f6890a01
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1538
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
We used sizeof(listp*) at a place where sizeof(listp) is more appropriate:
While these are pointers, they're part of the UHCI design, and don't depend
on ISA details.
Change-Id: I4d3cb571c9a407103bc81fc171a8e73b68f7c7a1
Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com>
Reviewed-on: http://review.coreboot.org/1530
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
Add controller type (UHCI, OHCI, EHCI or XHCI)
into usbdev_hc (hci_t) struct, so now we know
which type selected controller have. It needed
to access controller specific data, if access
usb tree outside of libpayload (e.g. in payload
intself)
Change-Id: I7df947bbb56a50d0d792ccd4d3a6b021ee95e2ea
Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-on: http://review.coreboot.org/1145
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Implemented OHCI reset function ohci_reset() in ohci.c
for libpayload's USB driver.
Change-Id: Id6518cbe00a21202757b34926bad171909740e97
Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-on: http://review.coreboot.org/1177
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Correct registers base (PCI BAR) reading to be
more specification friendly. Registers base
only in [31-12] bits, all other proposed to be 0
but that not true for some motherboards. So
adding mask to use only valid bits.
Change-Id: I2e9a4997e016dab812ccfe654e966bc91d42a625
Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-on: http://review.coreboot.org/1143
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
As we using 16-bit reading and writing in UHCI drive,
so all variables related to that must be 16-bit too.
Change-Id: Ib1abb03d054c167512e21f24f3c3da688c7fd01f
Signed-off-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-on: http://review.coreboot.org/1144
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
This sets the timeout for control and bulk transfers to 2s per
transfer descriptor (like we set it in the EHCI driver). It also adds
delays around the disabling of control and bulk list access to
overcome some race conditions.
Change-Id: Ia2d1db890fca51c7d9477de163d55030e0c5a04a
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1127
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This adds a simple check if a device is really configured before
returning it's address to the usb hub driver who wants to attach it.
Change-Id: I6fea140217c3e7468cc48ef7c3cbf2be8d11f47a
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1131
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This lets the init of usb mass storage return if the device
configuration is unusable. Also add some checks for proper shutdown so
we don't free/remove an uninitialized device.
Change-Id: I6daf9b38e632b6e381bcd5a7717f0f1a3150b64a
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1130
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This adds support for usb interrupt transfers to the OHCI driver.
Basically this enables support for HID keyboard devices.
For each interrupt transfer endpoint, two queues of transfer
descriptors (TDs) are maintained: the first with initialized TDs
is linked to the periodic schedule of the host controller (HC), the
second holds processed TDs which will be polled by the usb class
driver. The HC moves processed TDs from its schedule to a done queue.
We periodically fetch all TDs from the done queue, to put them on the
queue associated with the endpoint, where they can be polled from.
Fully processed TDs (i.e. which have gone throuch all of this) will be
reinitialized and put on the first queue again.
Change-Id: Iaab72c04087b36c9f0f6e539e31b47060c190015
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1128
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
This fixes some memory corruption, leaking and padding issues within
the initialization of the OHCI driver.
Change-Id: If6891f2a53e339d32c4324f4c9e0b1ed07596a60
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1126
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
This adds correct processing of the done queue of the OHCI host
controller (HC). We will always process the done queue after a control
or bulk transfer. Unfortunately, it's hard to tell when the HC will
write out the done queue, so we have do free the transfer descriptors
later and have to allocate them one by one.
To distinguish different types of TDs (e.g. async vs. interrupt
transfers) on the done queue, they are flagged in the lsb of there
.config field. We can utilize this bit for our own purpose, as it's
reserved and the host controller won't interpret it and preserves its
state.
Change-Id: I3b2271ae6221cdd50fc0f94582afdfe52bf7e797
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/1125
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
Nico Huber