- 04 12月, 2009 1 次提交
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由 Jan Kiszka 提交于
Seeking on vmstate save/load does not work if the underlying file is a stream. We could try to make all QEMUFile* forward-seek-aware, but first attempts in this direction indicated that it's saner to convert the few qemu_fseek-on-vmstates users to plain reads/writes. This fixes various subtle vmstate corruptions where unused fields were involved. Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NJuan Quintela <quintela@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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- 03 12月, 2009 39 次提交
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由 Laszlo Ast 提交于
The critical part of this change is how to deal with simultaneaous generation of interrupts. The only (normal) case when this happens in the emulation is near simultaneous reselection + selection. If selection comes first, there is no problem, since the target attempting reselection loses the arbitration (in the emulation it only means that the reselect function will not be started). In the worst case the host adapter is reselected, but the device driver already started a selection, so we jump to the alternative address to handle the situation. The SCRIPTS code can trigger another interrupt to notify the driver that the new task has to be postponed. I suppose that on real hardware there is enough time after the reselection interrupt to set the SIP bit before the next interrupt comes, so it would result in 2 stacked interrupts (a SCSI and a DMA one). However, in the emulation there is no interrupt stacking, so there is a good chance that the 2 interrupts will get to the interrupt handler at the same time. Nevertheless, it should not make a big difference in interrupt handling, since in both cases both interrupts have to be fetched first, and after that the new task (that failed during the selection phase) has to be prepared/reset for a later restart, and the reconnected device has to be serviced. The changes do not modify the host adapter's behavior if this interrupt is not enabled. See also LSI53C895A technical manual, SCID and SIEN0. Signed-off-by: NLaszlo Ast <laszlo.ast@siemens-enterprise.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Laszlo Ast 提交于
See SCRIPTS, 3.2.17 SELECT. Signed-off-by: NLaszlo Ast <laszlo.ast@siemens-enterprise.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Laszlo Ast 提交于
See SCRIPTS Programming Guide, 3.2.17 SELECT. Signed-off-by: NLaszlo Ast <laszlo.ast@siemens-enterprise.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Laszlo Ast 提交于
See SCSI-2, 6.5 Message system description/message codes. Signed-off-by: NLaszlo Ast <laszlo.ast@siemens-enterprise.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Laszlo Ast 提交于
Signed-off-by: NLaszlo Ast <laszlo.ast@siemens-enterprise.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Laszlo Ast 提交于
Signed-off-by: NLaszlo Ast <laszlo.ast@siemens-enterprise.com> Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Add READ_16 + friends to scsi-defs.h, scsi_command_name() and the request parsing helper functions. Use them in scsi-disk.c too. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move VERIFY emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move REPORT_LUNS emulation from scsi_send_command() to scsi_disk_emulate_command(). Also add REPORT_LUNS to scsi-defs.h and scsi_command_name(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move SERVICE_ACTION_IN emulation from scsi_send_command() to scsi_disk_emulate_command(). Also add SERVICE_ACTION_IN to scsi-defs.h and scsi_command_name(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move GET_CONFIGURATION emulation from scsi_send_command() to scsi_disk_emulate_command(). Also add GET_CONFIGURATION to scsi-defs.h and scsi_command_name(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move READ_TOC emulation from scsi_send_command() to scsi_disk_emulate_command(). Add scsi_disk_emulate_read_toc() function which holds the longisch READ_TOC emulation code. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move SYNCHRONIZE_CACHE emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move READ_CAPACITY emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move ALLOW_MEDIUM_REMOVAL emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move START_STOP emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move MODE_SENSE emulation from scsi_send_command() to scsi_disk_emulate_command(). Create two helper functions: mode_sense_page() which writes the actual mode pages and scsi_disk_emulate_mode_sense() which holds the longish MODE_SENSE emulation code, calling into mode_sense_page() as needed. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move RESERVE+RELEASE emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move INQUIRY emulation from scsi_send_command() to scsi_disk_emulate_command(). Also split the longish INQUITY emulation code into the new scsi_disk_emulate_inquiry() function. Serial number handling is slightly changed, we don't copy it any more but look it up directly in DriveInfo which we have at hand anyway. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Move REQUEST_SENSE emulation from scsi_send_command() to scsi_disk_emulate_command(). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Add new scsi_disk_emulate_command() function, which will -- when finished -- handle all scsi disk command emulation except actual I/O (READ+WRITE commands) which goes to the block layer. The function builds on top of the new SCSIRequest struct. SCSI command emulation code is moved over from scsi_send_command() in steps to ease review and make it easier to pin down regressions (if any) using bisect. This patch moves over TEST_UNIT_READY only. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Handy for debugging. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Also add and use the scsi_req_complete() helper function for calling the completion callback. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Add helper functions for scsi request parsing to common code. Getting command length, transfer size, and linear block address is handled. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Largely based on <scsi/scsi.h> from linux. Added into the tree so we can use the defines everywhere, not just in scsi-generic.c (which is linux-specific). Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Create generic functions to allocate, find and release SCSIRequest structs. Make scsi-disk and scsi-generic use them. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Changes: * Move from open-coded lists to QTAILQ macros. * Move the struct elements to the common data structures (SCSIDevice + SCSIRequest). * Drop free request pools. * Fix request cleanup in the destroy callback. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Rename the SCSIRequest structs in scsi-disk.c and scsi-generic.c to SCSIDiskReq and SCSIGenericReq. Create a SCSIRequest struct and move the common elements over. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Gerd Hoffmann 提交于
Also delete the leftover and unused scsi-disk.h file. Signed-off-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Mark McLoughlin 提交于
Print an error if the user specifies vnet_hdr=1 on the cmdline. Signed-off-by: NMark McLoughlin <markmc@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Mark McLoughlin 提交于
net_tap_init() always sets vnet_hdr using qemu_opt_get_bool(), but initialize it in net_init_tap() just to reduce confusion. Signed-off-by: NMark McLoughlin <markmc@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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由 Pierre Riteau 提交于
This avoids the "TUNSETOFFLOAD ioctl() failed: Invalid argument" message on kernels without TUNSETOFFLOAD support. Signed-off-by: NPierre Riteau <Pierre.Riteau@irisa.fr> Signed-off-by: NMark McLoughlin <markmc@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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