Commit Graph

15784 Commits

Author SHA1 Message Date
Marcin Krzeminski
1435bcd612 block: m25p80: at25128a/at25256a models
Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-12-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:24 +01:00
Marcin Krzeminski
d31912bd7e block: m25p80: n25q256a/n25q512a models
Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-11-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:24 +01:00
Marcin Krzeminski
9fbaa36477 block: m25p80: Implemented FSR register
Implements FSR register, it is used for busy waits.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-10-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:23 +01:00
Marcin Krzeminski
63e47f6f72 block: m25p80: Fast read and 4bytes commands
Adds fast read and 4bytes commands family.
This work is based on Pawel Lenkow patch from v1.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-9-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:23 +01:00
Marcin Krzeminski
aeb83edbf3 block: m25p80: Dummy cycles for N25Q256/512
Use the setting from the volatile cfg register to correctly
set the number of dummy cycles.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-8-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:23 +01:00
Marcin Krzeminski
cb475951c0 block: m25p80: Add configuration registers
This patch adds both volatile and non volatile configuration registers
and commands to allow modify them. It is needed for proper handling
dummy cycles. Initialization of those registers and flash state
has been included as well.
Some of this registers are used by kernel.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Acked-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-7-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:23 +01:00
Marcin Krzeminski
c0f3f6754a block: m25p80: 4byte address mode
This patch adds only 4byte address mode (does not cover dummy cycles).
This mode is needed to access more than 16 MiB of flash.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-6-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:23 +01:00
Marcin Krzeminski
d8a29a7a89 block: m25p80: Extend address mode
Extend address mode allows to switch flash 16 MiB banks,
allowing user to access all flash sectors.
This access mode is used by u-boot.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-5-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:23 +01:00
Marcin Krzeminski
76e872695a block: m25p80: Widen flags variable
Extend the width of the flags variable to support the already existing
(but unused) WR_1 flag, which is above the range of 8 bits.
This allows support of EEPROM emulation which requires the WR_1 feature.

Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-4-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:22 +01:00
Marcin Krzeminski
187c26364c block: m25p80: RESET_ENABLE and RESET_MEMORY commands
Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-3-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:22 +01:00
Marcin Krzeminski
e8710c2293 block: m25p80: Removed unused variable
Signed-off-by: Marcin Krzeminski <marcin.krzeminski@nokia.com>
Reviewed-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-id: 1458719789-29868-2-git-send-email-marcin.krzeminski@nokia.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:22 +01:00
Shannon Zhao
94f02c5ea9 ARM: Virt: Use gpio_key for power button
There is a problem for power button that it will not work if an early
system_powerdown request happens before guest gpio driver loads.

Fix this problem by using gpio_key.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Message-id: 1458221140-15232-3-git-send-email-zhaoshenglong@huawei.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:22 +01:00
Shannon Zhao
e5a8152c9b hw/gpio: Add the emulation of gpio_key
This will be used by ARM virt machine as a power button.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Message-id: 1458221140-15232-2-git-send-email-zhaoshenglong@huawei.com
[PMM: Use hyphen rather than underscore in type names;
 add a comment briefly describing what the device does]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 17:27:22 +01:00
Peter Maydell
489ef4c810 MIPS patches 2016-03-29
Changes:
 * add initial MIPS CPS support
 * implement ITU block
 * implement MAAR
 -----BEGIN PGP SIGNATURE-----
 
 iQEcBAABAgAGBQJW+43VAAoJEFIRjjwLKdprLmoH/1iWT4WsUJDF+9KX7PpFANbQ
 DT+QSDBJr6K+jCenLlqfvB30txS+NDRFzmW65J8hlawVOwhamg1X+pcQTbAYy0sm
 Du3Wexye0uw5YKUmqK2oCrgLJCKm3AqsmraaITE8q1URlkrQpuOuzazlIx5UA+RW
 RgF/DsPAlit8TkZMHwaVIOeXUl8vl8152fU26QvwOGAT6J3lV+lQJ+gMPGRSAWOw
 dcuVGNOTV0g3+kzOWisiqZc/V0Wp2Yu5IPezEVkFjZ4iyTTpnR8gkzuTNebzoRZo
 Zmws4mqaZAX6ijveevd+ueh5sR+AX+mFBunoXQVSSBvRFlqBcEEL2nrwb9wOUX4=
 =Ns6n
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/lalrae/tags/mips-20160329-2' into staging

MIPS patches 2016-03-29

Changes:
* add initial MIPS CPS support
* implement ITU block
* implement MAAR

# gpg: Signature made Wed 30 Mar 2016 09:27:01 BST using RSA key ID 0B29DA6B
# gpg: Good signature from "Leon Alrae <leon.alrae@imgtec.com>"

* remotes/lalrae/tags/mips-20160329-2: (21 commits)
  target-mips: add MAAR, MAARI register
  target-mips: use CP0_CHECK for gen_m{f|t}hc0
  hw/mips/cps: enable ITU for multithreading processors
  target-mips: make ITC Configuration Tags accessible to the CPU
  target-mips: check CP0 enabled for CACHE instruction also in R6
  hw/mips: implement ITC Storage - Bypass View
  hw/mips: implement ITC Storage - P/V Sync and Try Views
  hw/mips: implement ITC Storage - Empty/Full Sync and Try Views
  hw/mips: implement ITC Storage - Control View
  hw/mips: implement ITC Configuration Tags and Storage Cells
  target-mips: enable CM GCR in MIPS64R6-generic CPU
  hw/mips_malta: add CPS to Malta board
  hw/mips_malta: move CPU creation to a separate function
  hw/mips_malta: remove redundant irq and clock init
  hw/mips_malta: remove CPUMIPSState from the write_bootloader()
  hw/mips/cps: create CPC block inside CPS
  hw/mips: add initial Cluster Power Controller support
  hw/mips/cps: create GCR block inside CPS
  hw/mips: add initial Global Config Register support
  target-mips: add CMGCRBase register
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 16:06:45 +01:00
Peter Maydell
b9c27e7ae6 Block layer patches
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJW+7EyAAoJEH8JsnLIjy/WzXEP/0grmb7+Pu36dT835sLQonzB
 eIK5WIIlVDQsvW/pRXefsRZiZxlXPPMBfk5VmegtcjKycIDxZ8thDa4wOQMzMuD2
 nOGyG0lo7tLcx+/t2P6sICGYLpHgvfbObtnEQuSpi6wk2fg6Mg3K9Nhxqs8kyn0B
 ADs8Bx+FrzSK4rOVfgZP9AvLJUgz1/Keq4i8pdIIBuXP/ZQOQlaDQwF4IgxCXBJL
 ETS0q3JySiy6F1nt5HNzj8AcJFUEYVqUc+Og2/lry1/ZR3r/iaX63sRKqlb/kV/J
 g/Hh+075D0RQlp1I4Nl/0MvBBAYZ53JmURLc8nFFnFF8+vwiLxZR5LkwNkMfdyrI
 masbxmhEpHHuAqdOabSp4lSNIGYarKSc3n/HrC5lMGBNnxPuWfeM4t88JlYUSxKu
 Km9ofhdaTqDXDm5P2l4nrJcCMwOzVZaddaZYpj6vAxuRpCe91rbZZVvhtjHe6WE7
 jspMLzcr5yUlOBa8+hPvWiIq29U+qnEdTAqq+3sYzvN2cvTNsveRgQMG7J+c1Bsn
 2EWZz+m+ni2Uz+mDKX4oC6dqwcAjg+RB/b1I5Zsf6kEpoyq+mULdruevE6lFVHhX
 bMKKXOxJErxc40IrvXfAAYLJzbZyMBD3V5cbulOqIJiPAio94F8WEuye1gacEi7g
 rwpsqg/wi7jwc9pWsBcr
 =+NOQ
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Wed 30 Mar 2016 11:57:54 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"

* remotes/kevin/tags/for-upstream: (48 commits)
  iotests: Test qemu-img convert -S 0 behavior
  block/null-{co,aio}: Implement get_block_status()
  block/null-{co,aio}: Allow reading zeroes
  qemu-img: Fix preallocation with -S 0 for convert
  block: Remove bdrv_(set_)enable_write_cache()
  block: Remove BDRV_O_CACHE_WB
  block: Remove bdrv_parse_cache_flags()
  qemu-io: Use bdrv_parse_cache_mode() in reopen_f()
  block: Use bdrv_parse_cache_mode() in drive_init()
  raw: Support BDRV_REQ_FUA
  nbd: Support BDRV_REQ_FUA
  iscsi: Support BDRV_REQ_FUA
  block: Introduce bdrv_co_writev_flags()
  block/qapi: Use blk_enable_write_cache()
  block: Move enable_write_cache to BB level
  block: Handle flush error in bdrv_pwrite_sync()
  block: Always set writeback mode in blk_new_open()
  block: blockdev_init(): Call blk_set_enable_write_cache() explicitly
  xen_disk: Call blk_set_enable_write_cache() explicitly
  qemu-img: Call blk_set_enable_write_cache() explicitly
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-30 13:43:05 +01:00
Kevin Wolf
ecdd3cc82d xen_disk: Call blk_set_enable_write_cache() explicitly
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
2016-03-30 12:16:01 +02:00
Leon Alrae
408294352a hw/mips/cps: enable ITU for multithreading processors
Make ITU available in the system if CPU supports multithreading
and is part of CPS.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
25a611e3e4 hw/mips: implement ITC Storage - Bypass View
Bypass View does not cause issuing thread to block and does not affect
any of the cells state bit.

Read from a FIFO cell returns the value of the oldest entry.
Store to a FIFO cell changes the value of the newest entry.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
40dc9dc339 hw/mips: implement ITC Storage - P/V Sync and Try Views
P/V Synchronized and Try Views can be used to access Semaphore cells.
Load returns current value and post-decrements the value in the cell
(until it reaches zero). Stores increment the value (until it saturates
at 0xFFFF).

P/V Synchronized View causes the issuing thread to block on read if value
is 0. P/V Try View does not block the thread, it returns 0 in this case.

Cell's Empty and Full bits are not modified.

Trap bit (i.e. Gating Storage exceptions) not implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
4051089d61 hw/mips: implement ITC Storage - Empty/Full Sync and Try Views
Empty/Full Synchronized and Try views can be used to access FIFO cells.
Store to the FIFO cell pushes the value into the queue, load pops the oldest
element from the queue. Cell's Full and Empty bits are automatically updated
to reflect new state of the cell.

Empty/Full Synchronized View causes the issuing thread to block when FIFO is
empty while thread is performing a read, or FIFO is full while thread is
performing a write.

Empty/Full Try View never blocks the thread. If cell is full then write is
ignored, if cell is empty then load returns 0.

Trap bit (i.e. Gating Storage exceptions) not implemented.
Store Conditional support for E/F Try View (i.e. indicate failure if FIFO
is full) not implemented.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
5924c869c0 hw/mips: implement ITC Storage - Control View
Control view is used to access the ITC Storage Cell Tags. It never causes
the issuing thread to block.

Guest can empty the FIFO cell by setting Empty bit to 1.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
34fa7e83e1 hw/mips: implement ITC Configuration Tags and Storage Cells
Implement ITC as a single object consisting of two memory regions:

1) tag_io: ITC Configuration Tags (i.e. ITCAddressMap{0,1} registers) which
are accessible by the CPU via CACHE instruction. Also adding
MemoryRegion *itc_tag to the CPUMIPSState so that CACHE instruction will
dispatch reads/writes directly.

2) storage_io: memory-mapped ITC Storage whose address space is configurable
(i.e. enabled/remapped/resized) by writing to ITCAddressMap{0,1} registers.

ITC Storage contains FIFO and Semaphore cells. Read-only FIFO bit in the
ITC cell tag indicates the type of the cell. If the ITC Storage contains
both types of cells then FIFOs are located before Semaphores.

Since issuing thread can get blocked on the access to a cell (in E/F
Synchronized and P/V Synchronized Views) each cell has a bitmap to track
which threads are currently blocked.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:14:00 +01:00
Leon Alrae
bff384a4fb hw/mips_malta: add CPS to Malta board
If the user specifies smp > 1 and the CPU with CM GCR support, then
create Coherent Processing System (which takes care of instantiating CPUs)
rather than CPUs directly and connect i8259 and cbus to the pins exposed by
CPS. However, there is no GIC yet, thus CPS exposes CPU's IRQ pins so use
the same pin numbers as before.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
67a5496184 hw/mips_malta: move CPU creation to a separate function
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
dc520a7dee hw/mips_malta: remove redundant irq and clock init
Global smp_cpus is never zero (even if user provides -smp 0), thus clocks
and irqs are always initialized for each created CPU in the loop at the
beginning of mips_malta_init.

These two lines cause a leak of already allocated timer and irqs for the
first CPU - remove them.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
cc518af0b2 hw/mips_malta: remove CPUMIPSState from the write_bootloader()
Remove CPUMIPSState from the write_bootloader() argument list as it
is not used in the function.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
2edd5261ff hw/mips/cps: create CPC block inside CPS
Create Cluster Power Controller and add a link to the CPC MemoryRegion
in GCR. Guest can enable / map CPC to any physical address by writing to
the memory-mapped GCR_CPC_BASE register.

Set vp-start-reset property to 1 to allow only first VP to run from reset.
Others are brought up by the guest via CPC memory-mapped registers.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
1f93a6e4f3 hw/mips: add initial Cluster Power Controller support
Cluster Power Controller (CPC) is responsible for power management in
multiprocessing system. It provides registers to control the power and the
clock frequency of the individual elements in the system.

This patch implements only three registers that are used to control the
power state of each VP on a single core:
* VP Run is a write-only register used to set each VP to the run state
* VP Stop is a write-only register used to set each VP to the suspend state
* VP Running is a read-only register indicating the run state of each VP

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
a9bd9b5a86 hw/mips/cps: create GCR block inside CPS
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Yongbok Kim
3994215db4 hw/mips: add initial Global Config Register support
Add initial GCR support to indicate number of VPs present in the system,
L2 bypass mode and revision number.

Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>
[leon.alrae@imgtec.com:
 * removed GIC part,
 * changed commit message,
 * replaced %lx format spec. with PRIx64,
 * renamed mips_gcr.{c,h} to mips_cmgcr.{c,h},
 * replaced CONFIG_MIPS_GIC with CONFIG_MIPS_CPS]
Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:59 +01:00
Leon Alrae
8e7e8a5b7b hw/mips: implement generic MIPS Coherent Processing System container
Implement generic MIPS Coherent Processing System (CPS) which in this
commit just creates VPs, but it will serve as a container also for
other components like Global Configuration Registers and Cluster Power
Controller.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
2016-03-30 09:13:58 +01:00
Sameeh Jubran
8e0f7dd251 Revert "e1000: fix hang of win2k12 shutdown with flood ping"
This reverts commit 9596ef7c7b.

This workaround in order to fix endless interrupts is no
longer needed because it was superseded by the previous patch
(e1000: Fixing interrupt pace).

Signed-off-by: Sameeh Jubran <sameeh@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:42 +08:00
Sameeh Jubran
74004e8ce4 e1000: Fixing interrupts pace.
This patch introduces an upper bound for number of interrupts
per second. Without this bound an interrupt storm can occur as
it has been observed on Windows 10 when disabling the device.

According to the SPEC - Intel PCI/PCI-X Family of Gigabit
Ethernet Controllers Software Developer's Manual, section
13.4.18 - the Ethernet controller guarantees a maximum
observable interrupt rate of 7813 interrupts/sec. If there is
no upper bound this could lead to an interrupt storm by e1000
(when mit_delay < 500) causing interrupts to fire at a very high
pace.
Thus if mit_delay < 500 then the delay should be set to the
minimum delay possible which is 500. This can be calculated
easily as follows:

Interval = 10^9 / (7813 * 256) = 500.

Signed-off-by: Sameeh Jubran <sameeh@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2016-03-30 08:57:36 +08:00
Peter Maydell
7cd592bc65 VFIO updates 2016-03-28
- Use 128bit math to avoid asserts with IOMMU regions (Bandan Das)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJW+a1UAAoJECObm247sIsiqMsP/RX+lfr2LF7MA7mTEHFIya51
 K0LkICysQ5Kh/nIa7yPuPKuGJaDazpYrASq4P5dwm/5IPHk3r/eE7oue7/f1itOK
 Rgv1sv2nsVkd0p9adTpMkuIAYzLPyp2enL6iuFZo8urwFDfjfAxo8Q0pFd/nxWz7
 u7ft69vV40uWtHDg3TZx1EH19UJc0S2ouJeP1Q/MBLZ6FrJq2/SkgujNdX/OvnAv
 0zi9mKOykc+lDEzQShXyivIDnl8NYwnEDdcfMvCf3JoV5j/SkCtLyryRoKGOV2LW
 53687rNucVX5HLiFEs2hBuYhpxo5/Y7XOxAgbtRkkX1Dh12oy0u1NlV21BV5sPpQ
 KfiIimtVcq/EuLhs/HLMvwT83EwIRvlXmXiJxii5vWU7Nimmx+dpBqtkrwJ0qzch
 SPs+SxcCKCNLYeSPQxZ5mQTaf4uNgvBWMVm0nJtQvrWfUp/iLdDMeOx5Dx2wnoT4
 8ksHkJin7j2JQnmQiCrPHgLsp47NF0cJixe10DkA9AaQBUcPaExfyr/n5qZIkbvz
 gxbW0QG1bkpYPD8uNxgFIblSlQGXVTpcvVUaUW7crEH+Dw3GK4h8UcTkKH7rqHGk
 9eg0NfHMQDpS/Hr8MneXuOOlUOH2s9ZR0zVPsEwR1kqV1GNEmPbAz1tiLrGLwH3r
 /UBzyVFjBrdeP4gAJt4/
 =DpB8
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/awilliam/tags/vfio-update-20160328.0' into staging

VFIO updates 2016-03-28

 - Use 128bit math to avoid asserts with IOMMU regions (Bandan Das)

# gpg: Signature made Mon 28 Mar 2016 23:16:52 BST using RSA key ID 3BB08B22
# gpg: Good signature from "Alex Williamson <alex.williamson@redhat.com>"
# gpg:                 aka "Alex Williamson <alex@shazbot.org>"
# gpg:                 aka "Alex Williamson <alwillia@redhat.com>"
# gpg:                 aka "Alex Williamson <alex.l.williamson@gmail.com>"

* remotes/awilliam/tags/vfio-update-20160328.0:
  vfio: convert to 128 bit arithmetic calculations when adding mem regions

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-29 17:39:41 +01:00
Bandan Das
55efcc537d vfio: convert to 128 bit arithmetic calculations when adding mem regions
vfio_listener_region_add for a iommu mr results in
an overflow assert since iommu memory region is initialized
with UINT64_MAX. Convert calculations to 128 bit arithmetic
for iommu memory regions and let int128_get64 assert for non iommu
regions if there's an overflow.

Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
[missed (end - 1) on 2nd trace call, move llsize closer to use]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2016-03-28 13:27:49 -06:00
Peter Maydell
84a5a80148 * Log filtering from Alex and Peter
* Chardev fix from Marc-André
 * config.status tweak from David
 * Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
 * get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
 * Coverity fix from myself
 * PKE implementation from myself, based on rth's XSAVE support
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQEcBAABCAAGBQJW9ErPAAoJEL/70l94x66DJfEH/A/QkMpAhrgNdyVsahzsGrzE
 wx5gHFIc1nBYxyr62w4apUb5jPB7zaXu0LA7EAWDeAe0pyP8hZzLT9kJyOEDsuJu
 zwKN2QeLSNMtPbnbKN0I/YQ2za2xX1V5ruhSeOJoVslUI214hgnAURaGshhQNzuZ
 2CluDT9KgL5cQifAnKs5kJrwhIYShYNQB+1eDC/7wk28dd/EH+sPALIoF+rqrSmt
 Zu4Mdqd+9Ns+oKOjA6br9ULq/Hzg0aDfY82J+XLVVqfF3PXQe8rTDmuMf/7jTn+M
 Un7ZOcei9oZF2/9vfAfKQpDCcgD9HvOUSbgqV/ubmkPPmN/LNJzeKj0fBhrRN+Y=
 =K12D
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Log filtering from Alex and Peter
* Chardev fix from Marc-André
* config.status tweak from David
* Header file tweaks from Markus, myself and Veronia (Outreachy candidate)
* get_ticks_per_sec() removal from Rutuja (Outreachy candidate)
* Coverity fix from myself
* PKE implementation from myself, based on rth's XSAVE support

# gpg: Signature made Thu 24 Mar 2016 20:15:11 GMT using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (28 commits)
  target-i386: implement PKE for TCG
  config.status: Pass extra parameters
  char: translate from QIOChannel error to errno
  exec: fix error handling in file_ram_alloc
  cputlb: modernise the debug support
  qemu-log: support simple pid substitution for logs
  target-arm: dfilter support for in_asm
  qemu-log: dfilter-ise exec, out_asm, op and opt_op
  qemu-log: new option -dfilter to limit output
  qemu-log: Improve the "exec" TB execution logging
  qemu-log: Avoid function call for disabled qemu_log_mask logging
  qemu-log: correct help text for -d cpu
  tcg: pass down TranslationBlock to tcg_code_gen
  util: move declarations out of qemu-common.h
  Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND
  hw: explicitly include qemu-common.h and cpu.h
  include/crypto: Include qapi-types.h or qemu/bswap.h instead of qemu-common.h
  isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h
  Move ParallelIOArg from qemu-common.h to sysemu/char.h
  Move QEMU_ALIGN_*() from qemu-common.h to qemu/osdep.h
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Conflicts:
	scripts/clean-includes
2016-03-24 21:42:40 +00:00
Thomas Huth
57c522f47b hw/net/spapr_llan: Enable the RX buffer pools by default for new machines
RX buffer pools are now enabled by default for new machine types.
For older machine types, they are still disabled to avoid breaking
migration.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-03-24 11:17:34 +11:00
Thomas Huth
831e882253 hw/net/spapr_llan: Fix receive buffer handling for better performance
tl;dr:
This patch introduces an alternate way of handling the receive
buffers of the spapr-vlan device, resulting in much better
receive performance for the guest.

Full story:
One of our testers recently discovered that the performance of the
spapr-vlan device is very poor compared to other NICs, and that
a simple "ping -i 0.2 -s 65507 someip" in the guest can result
in more than 50% lost ping packets (especially with older guest
kernels < 3.17).

After doing some analysis, it was clear that there is a problem
with the way we handle the receive buffers in spapr_llan.c: The
ibmveth driver of the guest Linux kernel tries to add a lot of
buffers into several buffer pools (with 512, 2048 and 65536 byte
sizes by default, but it can be changed via the entries in the
/sys/devices/vio/1000/pool* directories of the guest). However,
the spapr-vlan device of QEMU only tries to squeeze all receive
buffer descriptors into one single page which has been supplied
by the guest during the H_REGISTER_LOGICAL_LAN call, without
taking care of different buffer sizes. This has two bad effects:
First, only a very limited number of buffer descriptors is accepted
at all. Second, we also hand 64k buffers to the guest even if
the 2k buffers would fit better - and this results in dropped packets
in the IP layer of the guest since too much skbuf memory is used.

Though it seems at a first glance like PAPR says that we should store
the receive buffer descriptors in the page that is supplied during
the H_REGISTER_LOGICAL_LAN call, chapter 16.4.1.2 in the LoPAPR spec
declares that "the contents of these descriptors are architecturally
opaque, none of these descriptors are manipulated by code above
the architected interfaces". That means we don't have to store
the RX buffer descriptors in this page, but can also manage the
receive buffers at the hypervisor level only. This is now what we
are doing here: Introducing proper RX buffer pools which are also
sorted by size of the buffers, so we can hand out a buffer with
the best fitting size when a packet has been received.

To avoid problems with migration from/to older version of QEMU,
the old behavior is also retained and enabled by default. The new
buffer management has to be enabled via a new "use-rx-buffer-pools"
property.

Now with the new buffer pool management enabled, the problem with
"ping -s 65507" is fixed for me, and the throughput of a simple
test with wget increases from creeping 3MB/s up to 20MB/s!

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-03-24 11:17:34 +11:00
Thomas Huth
d6f39fdfcd hw/net/spapr_llan: Extract rx buffer code into separate functions
Refactor the code a little bit by extracting the code that reads
and writes the receive buffer list page into separate functions.
There should be no functional change in this patch, this is just
a preparation for the upcoming extensions that introduce receive
buffer pools.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-03-24 11:17:34 +11:00
Benjamin Herrenschmidt
26a7f1291b ppc: Create cpu_ppc_set_papr() helper
And move the code adjusting the MSR mask and calling kvmppc_set_papr()
to it. This allows us to add a few more things such as disabling setting
of MSR:HV and appropriate LPCR bits which will be used when fixing
the exception model.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
[clg: removed LPCR setting ]
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-03-24 11:17:34 +11:00
Alexey Kardashevskiy
0ddbd05362 spapr/target-ppc/kvm: Only add hcall-instructions if KVM supports it
ePAPR defines "hcall-instructions" device-tree property which contains
code to call hypercalls in ePAPR paravirtualized guests.  In general
pseries guests won't use this property, instead using the PAPR defined
hypercall interface.

However, this property has been re-used to implement a hack to allow
PR KVM to run (slightly modified) guests in some situations where it
otherwise wouldn't be able to (because the system's L0 hypervisor
doesn't forward the PAPR hypercalls to the PR KVM kernel).

Hence, this property is always present in the device tree for pseries
guests. All KVM guests use it at least to read features via the
KVM_HC_FEATURES hypercall.

The property is populated by the code returned from the KVM's
KVM_PPC_GET_PVINFO ioctl; if not implemented in the KVM, QEMU supplies
code which will fail all hypercall attempts. If QEMU does not create
the property, and the guest kernel is compiled with
CONFIG_EPAPR_PARAVIRT (which is normally the case), there is exactly
the same stub at @epapr_hypercall_start already.

Rather than maintaining this fairly useless stub implementation, it
makes more sense not to create the property in the device tree in the
first place if the host kernel does not implement it.

This changes kvmppc_get_hypercall() to return 1 if the host kernel
does not implement KVM_CAP_PPC_GET_PVINFO. The caller can use it to decide
on whether to create the property or not.

This changes the pseries machine to not create the property if KVM does
not implement KVM_PPC_GET_PVINFO. In practice this means that from now
on the property will not be created if either HV KVM or TCG is used.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
[reworded commit message for clarity --dwg]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2016-03-24 11:17:33 +11:00
Peter Maydell
2538039f2c ivshmem: Fixes, cleanups, device model split
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJW8FqyAAoJEDhwtADrkYZTjYcP/R1m2LcFnLTxzDjSK38nxWcw
 5t/Do7nBNgXL2ZdRHfJsy7bx/9RR55k16rvzkFgW8LpUa5Ro64onRh2PfMz2p0e8
 QvZRBhXTh5/y4TD61y5Y8d9xawA6Hr1oEUtwsfovI9EiXzVaLl3sLI/nleed68Rk
 eAD2h8+ZcBeJ+lRK3UHEzAvqh0u+IScRMJifCxHyJuoZiylHIHVVq7x40ywg0Ejq
 8wHEj/nDJZHUxbuH4sm215Lv4dK6CmIP8UzuhfY6MxAS6Jo7Zdk1zv2SjJO2DzwT
 rWU4hD0+khwTz3hBR341oWxb84C5MujPwkeP7mibR46HLHCn5imQMz0W+6tj7umb
 dxnwPpXzON00+56B7e4i21aXTO0IaY3AcL9QuETSAaoy3SD5BdDkt3R9XWM+jqqZ
 armE5nNAv8WEN8qUYL/YpBxFDYSZ3CFgNv1enoP2pSp4DqeF/H3aP4RWu+dYqLDm
 MyVhcXUkjHfTCY6NVPPBkNwSvz2vq4ft/b6t7tLN+0ZmIRsEegKxxRrI2vB6O8Ga
 Gh2iKcJfMp90jwwvywfGO+DNQ8npHvhxMkioyzMHflo0QyS2ZDhlf4ubp7cXlYZ6
 tj7iGXJKJQpQyJWA58k8EXR9wc2W+fgRYD/H61QTTyTUgxEo6w10KjBDTsbFwvIY
 R0poHCfRR0DQ7y3GerZO
 =XEMm
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/armbru/tags/pull-ivshmem-2016-03-18' into staging

ivshmem: Fixes, cleanups, device model split

# gpg: Signature made Mon 21 Mar 2016 20:33:54 GMT using RSA key ID EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"

* remotes/armbru/tags/pull-ivshmem-2016-03-18: (40 commits)
  contrib/ivshmem-server: Print "not for production" warning
  ivshmem: Require master to have ID zero
  ivshmem: Drop ivshmem property x-memdev
  ivshmem: Clean up after the previous commit
  ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem
  ivshmem: Replace int role_val by OnOffAuto master
  qdev: New DEFINE_PROP_ON_OFF_AUTO
  ivshmem: Inline check_shm_size() into its only caller
  ivshmem: Simplify memory regions for BAR 2 (shared memory)
  ivshmem: Implement shm=... with a memory backend
  ivshmem: Tighten check of property "size"
  ivshmem: Simplify how we cope with short reads from server
  ivshmem: Drop the hackish test for UNIX domain chardev
  ivshmem: Rely on server sending the ID right after the version
  ivshmem: Propagate errors through ivshmem_recv_setup()
  ivshmem: Receive shared memory synchronously in realize()
  ivshmem: Plug leaks on unplug, fix peer disconnect
  ivshmem: Disentangle ivshmem_read()
  ivshmem: Simplify rejection of invalid peer ID from server
  ivshmem: Assert interrupts are set up once
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-03-23 12:57:44 +00:00
Veronia Bahaa
f348b6d1a5 util: move declarations out of qemu-common.h
Move declarations out of qemu-common.h for functions declared in
utils/ files: e.g. include/qemu/path.h for utils/path.c.
Move inline functions out of qemu-common.h and into new files (e.g.
include/qemu/bcd.h)

Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:17 +01:00
Rutuja Shah
73bcb24d93 Replaced get_tick_per_sec() by NANOSECONDS_PER_SECOND
This patch replaces get_ticks_per_sec() calls with the macro
NANOSECONDS_PER_SECOND. Also, as there are no callers, get_ticks_per_sec()
is then removed.  This replacement improves the readability and
understandability of code.

For example,

    timer_mod(fdctrl->result_timer,
	      qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + (get_ticks_per_sec() / 50));

NANOSECONDS_PER_SECOND makes it obvious that qemu_clock_get_ns
matches the unit of the expression on the right side of the plus.

Signed-off-by: Rutuja Shah <rutu.shah.26@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:17 +01:00
Paolo Bonzini
4771d756f4 hw: explicitly include qemu-common.h and cpu.h
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:17 +01:00
Markus Armbruster
bd36a618cc isa: Move DMA_transfer_handler from qemu-common.h to hw/isa/isa.h
DMA_transfer_handler is actually an ISA thing, and as such has no
business in qemu-common.h.  Move it to hw/isa/isa.h, and rename it to
IsaDmaTransferHandler.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Markus Armbruster
a7c4d9c7ca hw/pci/pci.h: Don't include qemu-common.h
qemu-common.h should only be included by .c files.  Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easily lead to circular header dependencies."

hw/pci/pci.h includes qemu-common.h, but its users only need pcibus_t
and PCIHostDeviceAddress from it.  Move them to hw/pci/pci.h and drop
the ill-advised include.  Include hw/pci/pci.h where the moved stuff
is now missing.  Except we can't in target-i386/kvm_i386.h, because
that would break the i386-linux-user compile.  Add
PCIHostDeviceAddress to qemu/typedefs.h instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Markus Armbruster
0137fdc094 include/hw/hw.h: Don't include qemu-common.h
qemu-common.h should only be included by .c files.  Its file comment
explains why: "No header file should depend on qemu-common.h, as this
would easily lead to circular header dependencies."

hw/hw.h includes qemu-common.h, but its users generally need only
hw_error() and qemu/module.h from it.  Move the former to hw/hw.h,
include the latter there, and drop the ill-advised include.
hw/misc/cbus.c now misses hw_error(), so include hw/hw.h there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Markus Armbruster
c80f6e9caa Clean up includes some more
Manually drop redundant includes that scripts/clean-includes misses,
e.g. because they're hidden in generator programs, or they use the
wrong kind of delimiter.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00
Markus Armbruster
14b6d44d47 Use scripts/clean-includes to drop redundant qemu/typedefs.h
Re-run scripts/clean-includes to apply the previous commit's
corrections and updates.  Besides redundant qemu/typedefs.h, this only
finds a redundant config-host.h include in ui/egl-helpers.c.  No idea
how that escaped the previous runs.

Some manual whitespace trimming around dropped includes squashed in.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-03-22 22:20:16 +01:00