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2011-11-01lsi53c895a: Use PCI DMA stub functionsEduard - Gabriel Munteanu
This updates the lsi53c895a device emulation to use the explicit PCI DMA functions, instead of directly calling physical memory access functions. Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-10-28scsi: add channel to addressingPaolo Bonzini
This also requires little more than adding the new argument to scsi_device_find, and the qdev property. All devices by default end up on channel 0. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi: allow arbitrary LUNsPaolo Bonzini
This only requires changes in two places: in SCSIBus, we need to look for a free LUN if somebody creates a device with a pre-existing scsi-id but the default LUN (-1, meaning "search for a free spot"); in vSCSI, we need to actually parse the LUN according to the SCSI spec. For vSCSI, max_target/max_lun are set according to the logical unit addressing format in SAM. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi: remove devs array from SCSIBusPaolo Bonzini
Change the devs array into a linked list, and add a scsi_device_find function to navigate the children list instead. This lets the SCSI bus use more complex addressing, and HBAs can talk to the correct device when there are multiple LUNs per target. scsi_device_find may return another LUN on the same target if none is found that matches exactly. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-28scsi: move tcq/ndev to SCSIBusOps (now SCSIBusInfo)Paolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-10-05lsi: Fix tag reference in debug printJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-09-19pci: interrupt pin documentation updateMichael S. Tsirkin
Fix up some erroneous comments in code: interrupt pins are named A-D, the interrupt pin register is always readonly and isn't zeroed out on reset. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-09-12hw: Trim superfluous #include "block_int.h"Markus Armbruster
Including it in device models is unclean, including it without a reason adds insult to injury. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-10lsi53c895a: avoid a warning from clang analyzerBlue Swirl
Avoid this warning from clang analyzer by deleting the variable: /src/qemu/hw/lsi53c895a.c:895:5: warning: Value stored to 'id' is never read id = (current_tag >> 8) & 0xf; Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-12scsi: pass cdb already to scsi_req_newPaolo Bonzini
Right now the CDB is not passed to the SCSIBus until scsi_req_enqueue. Passing it to scsi_req_new will let scsi_req_new dispatch common requests through different reqops. Moving the memcpy to scsi_req_new is a hack that will go away as soon as scsi_req_new will also take care of the parsing. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-08pci: rename pci_register_bar_region() to pci_register_bar()Avi Kivity
Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-08lsi53c895a: convert to memory APIAvi Kivity
An optimization that fast-pathed DMA reads from the SCRIPTS memory was removed int the process. Likely it breaks with iommus anyway. Reviewed-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-23Correct spelling of licensedMatthew Fernandez
Correct typos of "licenced" to "licensed". Reviewed-by: Stefan Weil <weil@mail.berlios.de> Reviewed-by: Andreas F=E4rber <andreas.faerber@web.de> Signed-off-by: Matthew Fernandez <matthew.fernandez@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-07-19scsi: Add 'hba_private' to SCSIRequestHannes Reinecke
'tag' is just an abstraction to identify the command from the driver. So we should make that explicit by replacing 'tag' with a driver-defined pointer 'hba_private'. This saves the lookup for driver handling several commands in parallel. 'tag' is still being kept for tracing purposes. Signed-off-by: Hannes Reinecke <hare@suse.de> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-06-22Merge remote-tracking branch 'mst/for_anthony' into stagingAnthony Liguori
Conflicts: hw/usb-uhci.c
2011-06-20lsi: Fix unused-but-set-variable warningChristophe Fergeau
This warning is new in gcc 4.6. Signed-off-by: Christophe Fergeau <cfergeau@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-06-15Merge remote-tracking branch 'origin/master' into pciMichael S. Tsirkin
Conflicts: hw/virtio-pci.c
2011-06-12hw/lsi53c895a.c: convert to PCIDeviceInfo to initialize idsIsaku Yamahata
use PCIDeviceInfo to initialize ids. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-05-26scsi: rename arguments to the new callbacksPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: split command_complete callback in twoPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: introduce scsi_req_get_bufPaolo Bonzini
... and remove some SCSIDevice variables or fields that now become unused. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: introduce scsi_req_continuePaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: introduce scsi_req_newPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: do not call send_command directlyPaolo Bonzini
Move the common part of scsi-disk.c and scsi-generic.c to the SCSI layer. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: introduce scsi_req_cancelPaolo Bonzini
This is for when the request must be dropped in the void, but still memory should be freed. To this end, the devices register a second callback in SCSIBusOps. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: Use 'SCSIRequest' directlyHannes Reinecke
Currently the SCSIRequest structure is abstracted away and cannot accessed directly from the driver. This requires the handler to do a lookup on an abstract 'tag' which identifies the SCSIRequest structure. With this patch the SCSIRequest structure is exposed to the driver. This allows use to use it directly as an argument to the SCSIDeviceInfo callback functions and remove the lookup. A new callback function 'alloc_req' is introduced matching 'free req'; unref'ing to free up resources after use is moved into the scsi_command_complete callbacks. This temporarily introduces a leak of requests that are cancelled, when they are removed from the queue and not from the driver. This is fixed later by introducing scsi_req_cancel. That patch in turn depends on this one, because the argument to scsi_req_cancel is a SCSIRequest. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-05-26lsi: extract lsi_find_by_tagPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2011-05-26scsi: introduce SCSIBusOpsPaolo Bonzini
There are more operations than a SCSI bus can handle, besides completing commands. One example, which this series will introduce, is cleaning up after a request is cancelled. More long term, a "SCSI bus" can represent the LUNs attached to a target; in this case, while all commands will ultimately reach a logical unit, it is the target who is in charge of answering REPORT LUNs. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Christoph Hellwig <hch@lst.de>
2011-05-08lsi53c895a: Rename 'sense' to 'status'Hannes Reinecke
The 'sense' field in the HBA status structure is misnamed, as it actually carries the SCSI status. Rename it. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Cc: qemu-trivial@nongnu.org Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-05Merge remote branch 'origin/master' into pciMichael S. Tsirkin
Conflicts: exec.c
2011-04-07hda-intel: convert to pci_register_bar_simple() (partial)Avi Kivity
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-04-01lsi53c895a: add support for ABORT messagesBernhard Kohl
If these messages are not handled correctly the guest driver may hang. Always mandatory: - ABORT - BUS DEVICE RESET Mandatory if tagged queuing is implemented (which disks usually do): - ABORT TAG - CLEAR QUEUE Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-06lsi53c895a: Update dnad when skipping MSGOUT bytesStefan Hajnoczi
Update not only dbc but also dnad when skipping bytes during the MSGOUT phase. Previously only dbc was updated which is probably wrong and could lead to bogus message codes being read. Tested on Linux and Windows Server 2003. Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-14lsi53c895a: fix endianness issuesAurelien Jarno
lsi_ram_read*() and lsi_ram_write*() are not consistent, one uses leXX_to_cpu() the other uses nothing. As the comment above the RAM declaration says: "Script ram is stored as 32-bit words in host byteorder.", remove the leXX_to_cpu() calls. This fixes the boot of an ARM versatile machine on MIPS and PowerPC hosts. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-12-11Add endianness as io mem parameterAlexander Graf
As stated before, devices can be little, big or native endian. The target endianness is not of their concern, so we need to push things down a level. This patch adds a parameter to cpu_register_io_memory that allows a device to choose its endianness. For now, all devices simply choose native endian, because that's the same behavior as before. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-11-22pci: Replace unneeded type casts in calls of pci_register_barStefan Weil
There is no need for these type casts (as other existing code shows). So re-write the first argument without type cast (and remove a related TODO comment). Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2010-10-13lsi53c895a: avoid a write only variableBlue Swirl
Compiling with GCC 4.6.0 20100925 produced a warning: /src/qemu/hw/lsi53c895a.c: In function 'lsi_do_msgout': /src/qemu/hw/lsi53c895a.c:848:9: error: variable 'len' set but not used [-Werror=unused-but-set-variable] Fix by adding a dummy cast so that the variable is not unused for non-debug case. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-08scsi: fix and improve debug printsBernhard Kohl
Some of them are not compile clean. Signed-off-by: Bernhard Kohl <bernhard.kohl@nsn.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-07-06scsi: Fix SCSI bus resetJan Kiszka
When the controller raises the SCSI reset line, we have to perform the requested reset on all disks attached to the controller's bus. Moreover, reset is edge triggered, so avoid repeating it if the line was already high. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-07-02scsi: scsi_bus_legacy_handle_cmdline() can fail, fix callersMarkus Armbruster
None of its callers checks for failure. scsi_hot_add() can crash because of that: (qemu) drive_add 4 if=scsi,format=host_device,file=/dev/sg1 scsi-generic: scsi generic interface too old Segmentation fault (core dumped) Fix all callers, not just scsi_hot_add(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2010-06-29lsi53c895a: fix Phase Mismatch JumpPaolo Bonzini
lsi_bad_phase has a bug in the choice of pmjad1/pmjad2. This does not matter with Linux guests because it uses just one routine for both, but it breaks Windows 64-bit guests. This is the text from the spec: "[The PMJCTL] bit controls which decision mechanism is used when jumping on phase mismatch. When this bit is cleared the LSI53C895A will use Phase Mismatch Jump Address 1 (PMJAD1) when the WSR bit is cleared and Phase Mismatch Jump Address 2 (PMJAD2) when the WSR bit is set. When this bit is set the LSI53C895A will use jump address one (PMJAD1) on data out (data out, command, message out) transfers and jump address two (PMJAD2) on data in (data in, status, message in) transfers." Which means: CCNTL0.PMJCTL 0 SCNTL2.WSR = 0 PMJAD1 0 SCNTL2.WSR = 1 PMJAD2 1 out PMJAD1 1 in PMJAD2 In qemu, what you get instead is: CCNTL0.PMJCTL 0 out PMJAD1 0 in PMJAD2 <<<<< 1 out PMJAD1 1 in PMJAD1 <<<<< Considering that qemu always has SCNTL2.WSR cleared, the two marked cases (corresponding to phase mismatch on input) are always jumping to the wrong PMJAD register. The patch implements the correct semantics. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-22lsi: Fix value overflow in request tag processingJan Kiszka
This fixes a mismerge of 64d564094cac5f72eeaeb950c442b773a00d3586 (wrong patch version): We need to mask the tag value properly to obtain its device ID. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-05-10lsi: Handle removal of selected devicesJan Kiszka
We must not store references to selected devices as they may be hot-removed. Instead, look up the device based on its tag right before using it. If the device disappeared, throw an interrupt and disconnect. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-10lsi: Adjust some register reset valuesJan Kiszka
According to the LSI spec, the reset value of dcmd, dstat, and ctest2 were wrong, and sdid as well as ssid require zero initialization. There are surely more discrepancies, this is just another increment. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-10lsi: Purge message queue on resetJan Kiszka
Declare the input message queue empty and initialize the related state machine properly on controller reset. This fixes unrecoverable errors when the controller was reset during ongoing requests. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-03lsi: Properly initialize controller state on resetJan Kiszka
The LSI controller was lacking a system reset handler. Simply invoke the existing soft reset handler in this case. This also allows to drop its explicit invocation during init. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-05-03lsi: Purge request queue on soft resetJan Kiszka
Avoid keeping zombie requests across controller reset by purging the queue and also dropping the currently active request. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-04-09lsi: fix segfault in lsi_command_completeGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2010-01-11lsi: pass lsi_request to lsi_reselectGerd Hoffmann
All callers of lsi_reselect have a lsi_request struct at hand anyway. So just pass it directly instead of having lsi_reselect search for it using the tag. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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