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2011-08-21esp: avoid structure holes spotted by paholeBlue Swirl
Report from pahole on amd64 host: struct ESPState { SysBusDevice busdev; /* 0 5648 */ /* --- cacheline 88 boundary (5632 bytes) was 16 bytes ago --- */ uint32_t it_shift; /* 5648 4 */ /* XXX 4 bytes hole, try to pack */ qemu_irq irq; /* 5656 8 */ uint8_t rregs[16]; /* 5664 16 */ uint8_t wregs[16]; /* 5680 16 */ /* --- cacheline 89 boundary (5696 bytes) --- */ int32_t ti_size; /* 5696 4 */ uint32_t ti_rptr; /* 5700 4 */ uint32_t ti_wptr; /* 5704 4 */ uint8_t ti_buf[16]; /* 5708 16 */ uint32_t status; /* 5724 4 */ uint32_t dma; /* 5728 4 */ /* XXX 4 bytes hole, try to pack */ SCSIBus bus; /* 5736 2120 */ /* --- cacheline 122 boundary (7808 bytes) was 48 bytes ago --- */ SCSIDevice * current_dev; /* 7856 8 */ SCSIRequest * current_req; /* 7864 8 */ /* --- cacheline 123 boundary (7872 bytes) --- */ uint8_t cmdbuf[16]; /* 7872 16 */ uint32_t cmdlen; /* 7888 4 */ uint32_t do_cmd; /* 7892 4 */ uint32_t dma_left; /* 7896 4 */ uint32_t dma_counter; /* 7900 4 */ uint8_t * async_buf; /* 7904 8 */ uint32_t async_len; /* 7912 4 */ /* XXX 4 bytes hole, try to pack */ ESPDMAMemoryReadWriteFunc dma_memory_read; /* 7920 8 */ ESPDMAMemoryReadWriteFunc dma_memory_write; /* 7928 8 */ /* --- cacheline 124 boundary (7936 bytes) --- */ void * dma_opaque; /* 7936 8 */ int dma_enabled; /* 7944 4 */ /* XXX 4 bytes hole, try to pack */ void (*dma_cb)(ESPState *); /* 7952 8 */ /* size: 7960, cachelines: 125 */ /* sum members: 7944, holes: 4, sum holes: 16 */ /* last cacheline: 24 bytes */ }; /* definitions: 1 */ Fix by rearranging the structure to avoid padding. Signed-off-by: Blue Swirl <blauwirbel@gmail.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>
2011-07-19scsi: 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>
2011-07-12esp: cancel current request only if some request is in flightHervé Poussineau
This bug was introduced in 94d3f98a3f3caddd7875f9a11776daeb84962a7b: scsi_cancel_io was checking if some request was pending before trying to cancel it, while scsi_req_cancel always cancels the request. This may lead to a crash of Qemu due to dereferencing a NULL pointer, as exhibited by NetBSD 5.1 installer on MIPS Magnum emulation. Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-02esp: correctly fill bus id with requested lunHervé Poussineau
This bug showed up after 1455084ea2c48abf23c4e4e15e378ee43457f381, and may be seen only on operating systems *not* using DMA to give commands to SCSI adapter. Signed-off-by: Hervé Poussineau <hpoussin@reactos.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.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>
2011-05-26esp: rename sense to statusPaolo Bonzini
This mirrors the LSI patch that was recently committed. 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>
2011-05-26scsi: 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>
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>
2010-09-11ESP: fix ESP DMA access when DMA is not enabledBlue Swirl
Sending ESP a command caused it to trigger DMA immediately even if DMA was not enabled at the DMA controller. Add a signal from DMA controller to ESP to tell ESP about changes in DMA enable bit. Also use the correct function for setting up GPIO outputs. This fixes NetBSD 1.6.1 through 3.0 boot. Thanks to Artyom Tarasenko for extensive debugging of the problem. Signed-off-by: Blue Swirl <blauwirbel@gmail.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>
2010-06-10esp: lower IRQ on soft resetBlue Swirl
42f1ced228c9b616cfa2b69846025271618e4ef5 removed irq lowering during reset. However, for chip reset command and DMA reset signal, its actually the correct thing to do. Lower IRQ on soft reset only. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-02-07esp: use CamelCaseFunc for function typesBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-01-16ESP: improve IRQ debuggingBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-11-09scsi: move scsi-disk.h -> scsi.hGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-09scsi: move scsi.h -> esp.hGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-11-07sparc32 (mostly): remove unneeded calls to device resetBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-10-24esp: convert to reset + vmsdBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-10-07New qdev_init_nofail()Markus Armbruster
Like qdev_init(), but terminate program via hw_error() instead of returning an error value. Use it instead of qdev_init() where terminating the program on failure is okay, either because it's during machine construction, or because we know that failure can't happen. Because relying in the latter is somewhat unclean, and the former is not always obvious, it would be nice to go back to qdev_init() in the not-so-obvious cases, only with proper error handling. I'm leaving that for another day, because it involves making sure that error values are properly checked by all callers. Patchworks-ID: 35168 Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05switch scsi bus to inplace allocation.Gerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01Revert "Get rid of _t suffix"Anthony Liguori
In the very least, a change like this requires discussion on the list. The naming convention is goofy and it causes a massive merge problem. Something like this _must_ be presented on the list first so people can provide input and cope with it. This reverts commit 99a0949b720a0936da2052cb9a46db04ffc6db29. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-01Get rid of _t suffixmalc
Some not so obvious bits, slirp and Xen were left alone for the time being. Signed-off-by: malc <av1474@comtv.ru>
2009-09-19ESP: convert to VMStateBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-09-09qdev/scsi: add scsi bus support to qdev, convert drivers.Gerd Hoffmann
* Add SCSIBus. * Add SCSIDeviceInfo, move device callbacks here. * add qdev/scsi helper functions. * convert drivers. Adding scsi disks via -device works now, i.e. you can do: -drive id=sda,if=none,... -device lsi -device scsi-disk,drive=sda legacy command lines (-drive if=scsi,...) continue to work. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-05esp: handle "select without attention"Artyom Tarasenko
Up to now "select without attention" was handled the same way as "select with attention". According to http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt select without ATN sends the CDB (Command Descriptor Block) directly, whereas select with ATN sends one message phase byte followed by 6, 10, or 12 command phase bytes. The attached patch implements the behaviour described above. Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> [blauwirbel@gmail.com: cleaned up formatting] Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-31esp (sparc32) Extra scsi data.Artyom Tarasenko
> ESP: Message Accepted (12) > ESP: Transfer status (sense=0) > ESP: read reg[5]: 0x20 > ESP: read reg[4]: 0x07 > ESP: read reg[7]: 0x02 > Extra scsi data. Fatal error. It looks like "Message Accepted" shouldn't write a response. At least ESP_RFLAGS must definetely be 0. With the following fix OBP goes one step further: Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-27qdev: add return value to init() callbacks.Gerd Hoffmann
Sorry folks, but it has to be. One more of these invasive qdev patches. We have a serious design bug in the qdev interface: device init callbacks can't signal failure because the init() callback has no return value. This patch fixes it. We have already one case in-tree where this is needed: Try -device virtio-blk-pci (without drive= specified) and watch qemu segfault. This patch fixes it. With usb+scsi being converted to qdev we'll get more devices where the init callback can fail for various reasons. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-25Make CPURead/WriteFunc structure 'const'Blue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-22ESP: implement Transfer PadBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-22ESP: Implement select without ATN, fix commentsBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-08Sparc32: move sparc32_dma init to sun4m.cBlue Swirl
Also connect ESP and Lance reset signals to DMA. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-31esp: fix interrupt register readBlue Swirl
Read of interrupt register should clear it and also sequence step and status. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-16qdev: rework device properties.Gerd Hoffmann
This patch is a major overhaul of the device properties. The properties are saved directly in the device state struct now, the linked list of property values is gone. Advantages: * We don't have to maintain the list with the property values. * The value in the property list and the value actually used by the device can't go out of sync any more (used to happen for the pci.devfn == -1 case) because there is only one place where the value is stored. * A record describing the property is required now, you can't set random properties any more. There are bus-specific and device-specific properties. The former should be used for properties common to all bus drivers. Typical use case is bus addressing, i.e. pci.devfn and i2c.address. Properties have a PropertyInfo struct attached with name, size and function pointers to parse and print properties. A few common property types have PropertyInfos defined in qdev-properties.c. Drivers are free to implement their own very special property parsers if needed. Properties can have default values. If unset they are zero-filled. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29Revert "Introduce reset notifier order"Jan Kiszka
This reverts commit 8217606e6edb49591b4a6fd5a0d1229cebe470a9 (and updates later added users of qemu_register_reset), we solved the problem it originally addressed less invasively. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-17Don't set IRQs on device reset and loadvm/savevmBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-06-16Remove io_index argument from cpu_register_io_memory()Avi Kivity
The parameter is always zero except when registering the three internal io regions (ROM, unassigned, notdirty). Remove the parameter to reduce the API's power, thus facilitating future change. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-26Remove qdev irq sink handlingPaul Brook
We have both IRQ sinks and GPIO inputs. These are in principle exactly the same thing, so remove the former. Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-05-22Introduce reset notifier orderJan Kiszka
Add the parameter 'order' to qemu_register_reset and sort callbacks on registration. On system reset, callbacks with lower order will be invoked before those with higher order. Update all existing users to the standard order 0. Note: At least for x86, the existing users seem to assume that handlers are called in their registration order. Therefore, the patch preserves this property. If someone feels bored, (s)he could try to identify this dependency and express it properly on callback registration. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-14ESP SCSI qdev conversionPaul Brook
Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-05-13Replace gcc variadic macro extension with C99 versionBlue Swirl
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-02-05hw: remove error handling from qemu_malloc() callers (Avi Kivity)aliguori
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6529 c046a42c-6fe2-441c-8c8c-71466251a162
2008-12-02Remove address maskingblueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5853 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-30Fix ICCS command (Herve Poussineau)blueswir1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5818 c046a42c-6fe2-441c-8c8c-71466251a162
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