The scsi layer may return us more data than the guests wants to have.
Handle this by just ignoring the extra bytes and calling the
{read,write}_data callback to finish the request.
Seen happening in real life with some extended inquiry command.
With this patch applied the linux kernel stops reseting the device
once at boot.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Change usb_msd_send_status() to take a pointer to the status packet
instead of writing the status to s->usb_buf which might not point
to the correct location.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add high speed support to the usb mass storage device. With this patch
applied the linux kernel recognises the usb storage device as highspeed
capable device and suggests to connect it to a highspeed port instead of
the uhci. Tested with both uhci and (not-yet submitted) ehci.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add support for device_qualifier and other_speed_config descriptors.
These are used to query the "other speed" configuration of usb 2.0
devices, i.e. in high-speed mode they return the full-speed
configuration and visa versa.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add usb_desc_attach() which sets up the device according to the speed
the usb port is able to handle. This function can be hooked into the
handle_attach callback.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add handle_attach() callback to USBDeviceInfo which is called by the
generic package handler when the device is attached to the usb bus
(i.e. plugged into a port).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
It would be nice to have some way to signal our hid devices support
remote wakeup. There is a descriptor bit for that of course. Problem
with using is one is that older qemu versions used to set the bit even
though they did *not* support remote wakeup. Bummer.
This patch changes the serial number of our hid devices from "1" to "42"
to signal "it is safe to enable remote wakeup". The serial number was
choosen because it isn't used for anything and it is available in sysfs
so it is easy to match it using udev rules like this:
ACTION=="add", SUBSYSTEM=="usb", \
ATTR{product}=="QEMU USB Tablet", ATTR{serial}=="42", \
RUN+="usb_enable_autosuspend %p"
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch makes the usb hub handle remote wakeup requests from devices
properly by updating the port status register and forwarding the wakeup
to the upstream port.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add wakeup callback to port ops for remote wakeup handling.
Also add a usb_wakeup() function for devices which want
trigger a remote wakeup.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add separate detach callback to USBPortOps, split
uhci/ohci/musb/usbhub attach functions into two.
Move common code to the usb_attach() function, only
the hardware-specific bits remain in the attach/detach
callbacks.
Keep track of the port it is attached to for each usb device.
[ v3: fix tyops in usb-musb.c ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch moves setting and clearing the remote_wakeup feature
bit (via USB_REQ_{SET,CLEAR}_FEATURE) to common code. Also
USB_REQ_GET_STATUS handling is moved to common code.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch adds fields to the USBDevice struct for the current
speed (hard-wired to full speed for now) and current device
configuration. Also a init function is added which inializes
these fields. This allows USB_REQ_{GET,SET}_CONFIGURATION
handling to be moved to common code.
For most drivers the conversion is trivial ad they support a single
configuration only anyway. One exception is bluetooth where some
device-specific setup code runs after get/set configuration. The
other is usb-net which actually has two configurations so the
the code to check for the active configuration has been adapted.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Switch the usb hub driver over to the
new descriptor infrastructure.
It also removes the nr_ports variable and MAX_PORTS define and
introduces a NUM_PORTS define instead. The numver of ports was
(and still is) fixed at 8 anyway.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Switch the usb serial drivers (serial, braille) over to the
new descriptor infrastructure.
Note that this removes the freely configurable vendor and product id
properties. I think the only reason this was configurable is that the
only difference between the serial and the braille device is the
vendor+product id. Of course the serial and braille devices keep their
different IDs, but they can't be overritten from the command line any
more.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch adds hw/usb-desc.[ch] files. They carry data structures
for various usb descriptors and helper functions to generate usb
packets from the structures.
The intention is to have a internal representation of the device
desription which is more usable than the current char array blobs,
so we can have common code handle common usb device emulation using
the device description.
The usage of this infrastructure is optional for usb drivers as there
are cases such as pass-through where it probably isn't very useful.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Slirp code tries to be smart an avoid data copy by using pointer to
the data. This solution leads to unaligned access, in this case
preq_addr, which is a 32-bit long structure. There is no real point
of avoiding data copy in a such case, as the value itself is smaller
or the same size as a pointer.
The patch replaces pointers to the preq_addr structure by the strcture
itself, and use the address 0.0.0.0 if no address has been requested
(this is not a valid address in such a request). It compares it with
htonl(0L) for correctness reasons, in case a code checker look for such
mistakes. It also uses memcpy() for copying the data, which takes care
of alignement issues.
This fixes an unaligned access on IA64 host while requesting a DHCP
address.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Improve constant loading in two ways:
- On all ARM versions, it's possible to load 0xffffff00 = -0x100 using
the mvn rd, #0. Fix the conditions.
- On <= ARMv6 versions, where movw and movt are not available, load the
constants using mov and orr with rotations depending on the constant
to load. This is very useful for example to load constants where the
low byte is 0. This reduce the generated code size by about 7%.
Also fix the coding style at the same time.
Cc: Andrzej Zaborowski <balrog@zabor.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
SH4 is using 16-bit instructions which means most of the constants are
loaded through a constant pool at the end of the subroutine. The same
memory page is therefore accessed in exec and read mode.
With the current implementation, a QEMU TLB entry is set to read or
read/write mode after an UTLB search and to exec mode after an ITLB
search, which causes a lot of TLB exceptions to switch from read or
read/write to exec and vice versa.
This patch optimizes that by already setting the QEMU TLB entry in read
or read/write mode when an UTLB entry is copied into ITLB (during an
ITLB miss). This improve the emulation speed by about 14%.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Some Linux kernels seems to implement ITLB/UTLB flushing through by
writing all TLB entries through the memory mapped interface instead
of writing one to MMUCR.TI.
Implement memory mapped ITLB write interface so that such kernels can
boot. This fixes https://bugs.launchpad.net/bugs/700774 .
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Each @section should have a menu entry and a @node entry.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Fix a file descriptor leak reported by cppcheck:
[/src/qemu/usb-bsd.c:392]: (error) Resource leak: bfd
[/src/qemu/usb-bsd.c:388]: (error) Resource leak: dfd
Rearrange the code to avoid descriptor leaks. Also add braces as
needed.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
TCG on MIPS was trying to avoid changing the branch offset, but didn't
due to a stupid typo. Fix it.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Due to a typo, qemu_st64 doesn't properly byteswap the 32-bit low word of
a 64 bit word before saving it. This patch fixes that.
Acked-by: Andrzej Zaborowski <balrogg@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
