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The "I" bit in PIO Setup and D2H FISes is exclusively a device concept
and the irqstatus register in the controller does not matter. The SATA
spec says when it should be one; for D2H FISes in practice it is always
set, while the PIO Setup FIS has several subcases that are documented in
the patch.
Also, the PIO Setup FIS interrupt is actually generated _after_ data
has been received.
Someone should probably spend some time reading the SATA specification and
figuring out the more obscure fields in the PIO Setup FIS, but this is enough
to fix SeaBIOS booting from ATAPI CD-ROMs over an AHCI controller.
Fixes: 956556e131e35f387ac482ad7b41151576fef057
Reported-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20180622165159.19863-1-pbonzini@redhat.com
[Minor edit to avoid ATAPI comment ambiguity. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
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We banned use of certain g_assert_FOO() functions outside tests, and
made checkpatch.pl flag them (commit 6e9389563e5). We neglected to
purge existing uses. Do that now.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180608170231.27912-1-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: John Snow <jsnow@redhat.com>
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Now that end_transfer_func is a tail call in ahci_start_transfer,
formalize the fact that the callback (of which ahci_start_transfer is
the sole implementation) takes care of the transfer too: rename it to
pio_transfer and, if it is present, call the end_transfer_func as soon
as it returns.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180606190955.20845-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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The PIO Setup FIS is written in the PIO:Entry state, which comes before
the ATA and ATAPI data transfer states. As a result, the PIO Setup FIS
interrupt is now raised before DMA ends for ATAPI commands, and tests have
to be adjusted.
This is also hinted by the description of the command header in the AHCI
specification, where the "A" bit is described as
When ‘1’, indicates that a PIO setup FIS shall be sent by the device
indicating a transfer for the ATAPI command.
and also by the description of the ACMD (ATAPI command region):
The ATAPI command must be either 12 or 16 bytes in length. The length
transmitted by the HBA is determined by the PIO setup FIS that is sent
by the device requesting the ATAPI command.
QEMU, which conflates the "generator" and the "receiver" of the FIS into
one device, always uses ATAPI_PACKET_SIZE, aka 12, for the length.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180606190955.20845-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-17-jsnow@redhat.com
[Fixed format specifiers. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
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Actually, this function looks pretty broken, but for now, let's finish
up what this series of commits came here to do.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-15-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-14-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-13-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-12-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-10-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-8-jsnow@redhat.com
[Changed format specifier. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-7-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-6-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Churn.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-5-jsnow@redhat.com
[Fix patchew/checkpatch nit. --js]
Signed-off-by: John Snow <jsnow@redhat.com>
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A trace is added to let us watch unimplemented registers specifically,
as these are more likely to cause us trouble. Otherwise, the port read
traces now tell us what register is getting hit, which is nicer.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Instead of tracking offsets, lets count the registers.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20180531222835.16558-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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The comment gives us a hint. *Maybe* we still have something to
process. Well, why not check?
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 20180531004323.4611-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Fixes: https://bugs.launchpad.net/qemu/+bug/1769189
AHCI presently signals completion prior to the PxCI register being
cleared to indicate completion. If a guest driver attempts to issue
a new command in its IRQ handler, it might be surprised to learn there
is still a command pending.
In the case of Windows 10's boot driver, it will actually poll the IRQ
register hoping to find out when the command is done running -- which
will never happen, as there isn't a command running.
Fix this: clear PxCI in ahci_cmd_done and not in the asynchronous BH.
Because it now runs synchronously, we don't need to check if the command
is actually done by spying on the ATA registers. We know it's done.
CC: qemu-stable <qemu-stable@nongnu.org>
Reported-by: François Guerraz <kubrick@fgv6.net>
Tested-by: Bruce Rogers <brogers@suse.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 20180531004323.4611-3-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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These functions work on the AHCI device, not the individual
AHCI devices, so trim the AHCIDevice argument.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 20180531004323.4611-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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When pulling in headers that are in the same directory as the C file (as
opposed to one in include/), we should use its relative path, without a
directory.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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Replace all occurs of __FUNCTION__ except for the check in checkpatch
with the non GCC specific __func__.
One line in hcd-musb.c was manually tweaked to pass checkpatch.
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
[THH: Removed hunks related to pxa2xx_mmci.c (fixed already)]
Signed-off-by: Thomas Huth <thuth@redhat.com>
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and remove a duplicated include
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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The allwinner code is only needed for the allwinner board (for which
we also have a separate CONFIG_ALLWINNER_A10 config switch), so it
does not make sense that we compile this for all the other boards
that need AHCI, too. Let's move it to a separate file that is only
compiled when CONFIG_ALLWINNER_A10 is set.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 1508784509-29377-1-git-send-email-thuth@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Apparently GCC gets bent over comparing enum values against zero.
Replace the conditional with something less readable.
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170921013821.1673-1-jsnow@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170901001502.29915-10-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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The current FIS printing routines dump the FIS to screen. adjust this
such that it dumps to buffer instead, then use this ability to have
FIS dump mechanisms via trace-events instead of compiled defines.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170901001502.29915-9-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Create a new enum so that we can name the IRQ bits, which will make debugging
them a little nicer if we can print them out. Not handled in this patch, but
this will make it possible to get a nice debug printf detailing exactly which
status bits are set, as it can be multiple at any given time.
As a consequence of this patch, it is no longer possible to set multiple IRQ
codes at once, but nothing was utilizing this ability anyway.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170901001502.29915-8-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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There are a few hangers-on that will be dealt with individually
in forthcoming patches.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170901001502.29915-7-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Fixes read after freeing error reported
https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg04243.html
Message-Id: <59a56959-ca12-ea75-33fa-ff07eba1b090@redhat.com>
ich9-ahci device creates ide buses and attaches them as QOM children
at realize time, however it forgets to properly clean them up
at unrealize time and frees memory containing these children,
with following call-chain:
qdev_device_add()
object_property_set_bool('realized', true)
device_set_realized()
...
pci_qdev_realize() -> pci_ich9_ahci_realize() -> ahci_realize()
...
s->dev = g_new0(AHCIDevice, ports);
...
AHCIDevice *ad = &s->dev[i];
ide_bus_new(&ad->port, sizeof(ad->port), qdev, i, 1);
^^^ creates bus in memory allocated by above gnew()
and adds it as child propety to ahci device
...
hotplug_handler_plug(); -> goto post_realize_fail;
pci_qdev_unrealize() -> pci_ich9_uninit() -> ahci_uninit()
...
g_free(s->dev);
^^^ free memory that holds children busses
return with error from device_set_realized()
As result later when qdev_device_add() tries to unparent ich9-ahci
after failed device_set_realized(),
object_unparent() -> object_property_del_child()
iterates over existing QOM children including buses added by
ide_bus_new() and tries to unparent them, which causes access to
freed memory where they where located.
Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1503938085-169486-1-git-send-email-imammedo@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Complete the split by renaming ahci_public.h --> ahci.h and
moving the current ahci.h to hw/ide/ahci_internal.h.
Adjust ahci_internal.h to now load ahci.h instead of ahci_public.h.
Finalize the split by switching external users to the new header.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170623220926.11479-4-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Instead of reaching into the PCI state, allow the AHCIDevice to
respond with how many ports it has.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20170623220926.11479-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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In some cases a failing VMSTATE_*_EQUAL does not mean we detected a bug,
but it's actually the best we can do. Especially in these cases a verbose
error message is required.
Let's introduce infrastructure for specifying a error hint to be used if
equal check fails. Let's do this by adding a parameter to the _EQUAL
macros called _err_hint. Also change all current users to pass NULL as
last parameter so nothing changes for them.
Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Message-Id: <20170623144823.42936-1-pasic@linux.vnet.ibm.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
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This can avoid memory leak when hotunplug the ahci device.
Signed-off-by: Li Qiang <liqiang6-s@360.cn>
Message-id: 1488449293-80280-4-git-send-email-liqiang6-s@360.cn
Signed-off-by: John Snow <jsnow@redhat.com>
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The AHCI emulation code supports 64-bit addressing and should advertise this
fact in the Host Capabilities register. Both Linux and Windows drivers test
this bit to decide if the upper 32 bits of various registers may be written
to, and at least some versions of Windows have a bug where DMA is attempted
with an address above 4GB but, in the absence of HOST_CAP_64, the upper 32
bits are left unititialized which leads to a memory corruption.
[Maintainer edit:
This fixes https://bugzilla.redhat.com/show_bug.cgi?id=1411105,
which affects Windows Server 2008 SP2 in some cases.]
Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Message-id: 1484305370-6220-1-git-send-email-lprosek@redhat.com
[Amended commit message --js]
Signed-off-by: John Snow <jsnow@redhat.com>
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The hard-coded default alignment is BDRV_SECTOR_SIZE, however this is not
necessarily the case for all platforms. Use this as the default alignment for
all current callers.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
Message-id: 1476445266-27503-2-git-send-email-mark.cave-ayland@ilande.co.uk
Signed-off-by: John Snow <jsnow@redhat.com>
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Similar to existing fixes for IDE (87ac25fd) and ATAPI (7f951b2d), the
AIOCB must be cleared in the callback. Otherwise, we may accidentally
try to reset a dangling pointer in bdrv_aio_cancel() from a port reset.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1474575040-32079-2-git-send-email-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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ahci-test /x86_64/ahci/io/dma/lba28/retry triggers the following leak:
Direct leak of 16 byte(s) in 1 object(s) allocated from:
#0 0x7fc4b2a25e20 in malloc (/lib64/libasan.so.3+0xc6e20)
#1 0x7fc4993bce58 in g_malloc (/lib64/libglib-2.0.so.0+0x4ee58)
#2 0x556a187d4b34 in ahci_populate_sglist hw/ide/ahci.c:896
#3 0x556a187d8237 in ahci_dma_prepare_buf hw/ide/ahci.c:1367
#4 0x556a187b5a1a in ide_dma_cb hw/ide/core.c:844
#5 0x556a187d7eec in ahci_start_dma hw/ide/ahci.c:1333
#6 0x556a187b650b in ide_start_dma hw/ide/core.c:921
#7 0x556a187b61e6 in ide_sector_start_dma hw/ide/core.c:911
#8 0x556a187b9e26 in cmd_write_dma hw/ide/core.c:1486
#9 0x556a187bd519 in ide_exec_cmd hw/ide/core.c:2027
#10 0x556a187d71c5 in handle_reg_h2d_fis hw/ide/ahci.c:1204
#11 0x556a187d7681 in handle_cmd hw/ide/ahci.c:1254
#12 0x556a187d168a in check_cmd hw/ide/ahci.c:510
#13 0x556a187d0afc in ahci_port_write hw/ide/ahci.c:314
#14 0x556a187d105d in ahci_mem_write hw/ide/ahci.c:435
#15 0x556a1831d959 in memory_region_write_accessor /home/elmarco/src/qemu/memory.c:525
#16 0x556a1831dc35 in access_with_adjusted_size /home/elmarco/src/qemu/memory.c:591
#17 0x556a18323ce3 in memory_region_dispatch_write /home/elmarco/src/qemu/memory.c:1262
#18 0x556a1828cf67 in address_space_write_continue /home/elmarco/src/qemu/exec.c:2578
#19 0x556a1828d20b in address_space_write /home/elmarco/src/qemu/exec.c:2635
#20 0x556a1828d92b in address_space_rw /home/elmarco/src/qemu/exec.c:2737
#21 0x556a1828daf7 in cpu_physical_memory_rw /home/elmarco/src/qemu/exec.c:2746
#22 0x556a183068d3 in cpu_physical_memory_write /home/elmarco/src/qemu/include/exec/cpu-common.h:72
#23 0x556a18308194 in qtest_process_command /home/elmarco/src/qemu/qtest.c:382
#24 0x556a18309999 in qtest_process_inbuf /home/elmarco/src/qemu/qtest.c:573
#25 0x556a18309a4a in qtest_read /home/elmarco/src/qemu/qtest.c:585
#26 0x556a18598b85 in qemu_chr_be_write_impl /home/elmarco/src/qemu/qemu-char.c:387
#27 0x556a18598c52 in qemu_chr_be_write /home/elmarco/src/qemu/qemu-char.c:399
#28 0x556a185a2afa in tcp_chr_read /home/elmarco/src/qemu/qemu-char.c:2902
#29 0x556a18cbaf52 in qio_channel_fd_source_dispatch io/channel-watch.c:84
Follow John Snow recommendation:
Everywhere else ncq_err is used, it is accompanied by a list cleanup
except for ncq_cb, which is the case you are fixing here.
Move the sglist destruction inside of ncq_err and then delete it from
the other two locations to keep it tidy.
Call dma_buf_commit in ide_dma_cb after the early return. Though, this
is also a little wonky because this routine does more than clear the
list, but it is at the moment the centralized "we're done with the
sglist" function and none of the other side effects that occur in
dma_buf_commit will interfere with the reset that occurs from
ide_restart_bh, I think
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
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Each irq is referenced by the IDEBus in ide_init2(), thus we can free
the no longer used array.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
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Tracked down with an ugly, brittle and probably buggy Perl script.
Also move includes converted to <...> up so they get included before
ours where that's obviously okay.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
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The patch moves "hw/ide/achi.h", "hw/ide/pci.h" and "hw/ide/internal.h" headers
to corresponding folders inside "include" folder alike other Qemu headers.
Signed-off-by: Efimov Vasily <real@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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If the FIS or DMA engines are already started, do not allow them to be
"restarted." As a side-effect of this change, the migration post-load
routine must be modified to cope. If the engines are listed as "on"
in the migrated registers, they must be cleared to allow the startup
routine to see the transition from "off" to "on".
As a second side-effect, the extra argument to ahci_cond_engine_start
is removed in favor of consistent behavior.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1454103689-13042-5-git-send-email-jsnow@redhat.com
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Currently, we let ahci_cond_start_engines reject weird configurations
where either the DMA (CLB) or FIS engines are said to be started, but
their matching on/off control bit is toggled off.
There should be no way to achieve this, since any time you toggle the
control bit off, the status bit should always follow synchronously.
Preparing for a refactor in cond_start_engines, move the rejection logic
straight up into post_load.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1454103689-13042-4-git-send-email-jsnow@redhat.com
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Instead of relying on ahci_cond_start_engines to maintain the
engine status indicators itself, have the lower-layer CLB and FIS mapper
helpers do it themselves.
This makes the cond_start routine slightly nicer to read, and makes sure
that the status indicators will always be correct.
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1454103689-13042-3-git-send-email-jsnow@redhat.com
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Definitely don't try to unmap a garbage address.
Reported-by: Zuozhi fzz <zuozhi.fzz@alibaba-inc.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1454103689-13042-2-git-send-email-jsnow@redhat.com
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Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.
This commit was created with scripts/clean-includes.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1453832250-766-17-git-send-email-peter.maydell@linaro.org
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When processing NCQ commands, AHCI device emulation prepares a
NCQ transfer object; To which an aio control block(aiocb) object
is assigned in 'execute_ncq_command'. In case, when the NCQ
command is invalid, the 'aiocb' object is not assigned, and NCQ
transfer object is left as 'used'. This leads to a use after
free kind of error in 'bdrv_aio_cancel_async' via 'ahci_reset_port'.
Reset NCQ transfer object to 'unused' to avoid it.
[Maintainer edit: s/ACHI/AHCI/ in the commit message. --js]
Reported-by: Qinghao Tang <luodalongde@gmail.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1452282511-4116-1-git-send-email-ppandit@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
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Add a Sysbus AHCI subclass for the Allwinner AHCI. It has a few extra
vendor specific registers which are used for phy and power init.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 833b5b05ed5ade38bf69656679b0a7575e79492b.1445917756.git.crosthwaite.peter@gmail.com
[resolved patch context on pull --js]
Signed-off-by: John Snow <jsnow@redhat.com>
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Do the init level tasks asap and the realize later (mainly when
num_ports is available). This allows sub-class realize routines
to work with the device post-init.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 1a7c7b2b32e5ccf49373a5065da5ece89730d3ac.1445917756.git.crosthwaite.peter@gmail.com
Signed-off-by: John Snow <jsnow@redhat.com>
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