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2018-06-29i.mx7d: Change IRQ number type from hwaddr to intJean-Christophe Dubois
The qdev_get_gpio_in() function accept an int as second parameter. Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29i.mx7d: Change SRC unimplemented device name from sdma to srcJean-Christophe Dubois
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29i.mx7d: Remove unused header filesJean-Christophe Dubois
Signed-off-by: Jean-Christophe Dubois <jcd@tribudubois.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: support reading of CNT[VCT|FRQ]_EL0 from user-spaceAlex Bennée
Since kernel commit a86bd139f2 (arm64: arch_timer: Enable CNTVCT_EL0 trap..), released in kernel version v4.12, user-space has been able to read these system registers. As we can't use QEMUTimer's in linux-user mode we just directly call cpu_get_clock(). Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180625160009.17437-2-alex.bennee@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement ARMv8.2-DotProdRichard Henderson
We've already added the helpers with an SVE patch, all that remains is to wire up the aa64 and aa32 translators. Enable the feature within -cpu max for CONFIG_USER_ONLY. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-36-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Enable SVE for aarch64-linux-userRichard Henderson
Enable ARM_FEATURE_SVE for the generic "max" cpu. Tested-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-35-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE dot product (indexed)Richard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180627043328.11531-34-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE dot product (vectors)Richard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-33-richard.henderson@linaro.org [PMM: moved 'ra=%reg_movprfx' here from following patch] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE fp complex multiply add (indexed)Richard Henderson
Enhance the existing helpers to support SVE, which takes the index from each 128-bit segment. The change has no effect for AdvSIMD, since there is only one such segment. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180627043328.11531-32-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Pass index to AdvSIMD FCMLA (indexed)Richard Henderson
For aa64 advsimd, we had been passing the pre-indexed vector. However, sve applies the index to each 128-bit segment, so we need to pass in the index separately. For aa32 advsimd, the fp32 operation always has index 0, but we failed to interpret the fp16 index correctly. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180627043328.11531-31-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE fp complex multiply addRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-30-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point complex addRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-29-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE MOVPRFXRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-28-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point unary operationsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-27-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point round to integral valueRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-26-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point convert to integerRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-25-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point convert precisionRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-24-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point trig multiply-add coefficientRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-23-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE FP Compare with Zero GroupRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-22-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE Floating Point Unary Operations - Unpredicated GroupRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-21-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE FP Fast Reduction GroupRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-20-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE Floating Point Multiply Indexed GroupRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-19-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point arithmetic with immediateRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-18-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point compare vectorsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-17-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE scatter store vector immediateRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-16-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE first-fault gather loadsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-15-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE gather loadsRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180627043328.11531-14-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE prefetchesRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-13-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE scatter storesRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-12-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE store vector/predicate registerRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-11-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE load and broadcast elementRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-10-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE Floating Point Accumulating Reduction GroupRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-9-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE FP Multiply-Add GroupRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180627043328.11531-8-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE floating-point arithmetic (predicated)Richard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-7-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE integer convert to floating-pointRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> [PMM: fixed typo] Message-id: 20180627043328.11531-6-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE load and broadcast quadwordRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE Memory Contiguous Store GroupRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-4-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE Contiguous Load, first-fault and no-faultRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 20180627043328.11531-3-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29target/arm: Implement SVE Memory Contiguous Load GroupRichard Henderson
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180627043328.11531-2-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29hw/arm/virt: Silence dtc /memory warningEric Auger
When running dtc on the guest /proc/device-tree we get the following warning: Warning (unit_address_vs_reg): Node /memory has a reg or ranges property, but no unit name". Let's fix that by adding the unit address to the node name. We also don't create the /memory node anymore in create_fdt(). We directly create it in load_dtb. /chosen still needs to be created in create_fdt as the uart needs it. In case the user provided his own dtb, we nop all memory nodes found in root and create new one(s). Signed-off-by: Eric Auger <eric.auger@redhat.com> Message-id: 1530044492-24921-4-git-send-email-eric.auger@redhat.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29hw/arm/virt: Silence dtc /intc warningsEric Auger
When running dtc on the guest /proc/device-tree we get the following warnings: "Warning (unit_address_vs_reg): Node <name> has a reg or ranges property, but no unit name", with name: /intc, /intc/its, /intc/v2m. Nodes should have a name in the form <name>[@<unit-address>] where unit-address is the primary address used to access the device, listed in the node's reg property. This fix seems to make dtc happy. Signed-off-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1530044492-24921-3-git-send-email-eric.auger@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29device_tree: Add qemu_fdt_node_unit_pathEric Auger
This helper allows to retrieve the paths of nodes whose name match node-name or node-name@unit-address patterns. Signed-off-by: Eric Auger <eric.auger@redhat.com> Message-id: 1530044492-24921-2-git-send-email-eric.auger@redhat.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29device_tree: Replace error_setg(&error_fatal) by error_report() + exit()Philippe Mathieu-Daudé
Use error_report() + exit() instead of error_setg(&error_fatal), as suggested by the "qapi/error.h" documentation: Please don't error_setg(&error_fatal, ...), use error_report() and exit(), because that's more obvious. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Message-id: 20180625165749.3910-4-f4bug@amsat.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29hw/arm/sysbus-fdt: Replace error_setg(&error_fatal) by error_report() + exit()Philippe Mathieu-Daudé
Use error_report() + exit() instead of error_setg(&error_fatal), as suggested by the "qapi/error.h" documentation: Please don't error_setg(&error_fatal, ...), use error_report() and exit(), because that's more obvious. This fixes CID 1352173: "Passing null pointer dt_name to qemu_fdt_node_path, which dereferences it." And this also fixes: hw/arm/sysbus-fdt.c:322:9: warning: Array access (from variable 'node_path') results in a null pointer dereference if (node_path[1]) { ^~~~~~~~~~~~ Fixes: Coverity CID 1352173 (Dereference after null check) Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Eric Auger <eric.auger@redhat.com> Message-id: 20180625165749.3910-3-f4bug@amsat.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29hw/block/fdc: Replace error_setg(&error_abort) by assert()Philippe Mathieu-Daudé
Use assert() instead of error_setg(&error_abort), as suggested by the "qapi/error.h" documentation: Please don't error_setg(&error_fatal, ...), use error_report() and exit(), because that's more obvious. Likewise, don't error_setg(&error_abort, ...), use assert(). Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Acked-by: John Snow <jsnow@redhat.com> Message-id: 20180625165749.3910-2-f4bug@amsat.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell
* "info mtree" improvements (Alexey) * fake VPD block limits for SCSI passthrough (Daniel Barboza) * chardev and main loop fixes (Daniel Berrangé, Sergio, Stefan) * help fixes (Eduardo) * pc-dimm refactoring (David) * tests improvements and fixes (Emilio, Thomas) * SVM emulation fixes (Jan) * MemoryRegionCache fix (Eric) * WHPX improvements (Justin) * ESP cleanup (Mark) * -overcommit option (Michael) * qemu-pr-helper fixes (me) * "info pic" improvements for x86 (Peter) * x86 TCG emulation fixes (Richard) * KVM slot handling fix (Shannon) * Next round of deprecation (Thomas) * Windows dump format support (Viktor) # gpg: Signature made Fri 29 Jun 2018 12:03:05 BST # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (60 commits) tests/boot-serial: Do not delete the output file in case of errors hw/scsi: add VPD Block Limits emulation hw/scsi: centralize SG_IO calls into single function hw/scsi: cleanups before VPD BL emulation dump: add Windows live system dump dump: add fallback KDBG using in Windows dump dump: use system context in Windows dump dump: add Windows dump format to dump-guest-memory i386/cpu: make -cpu host support monitor/mwait kvm: support -overcommit cpu-pm=on|off hmp: obsolete "info ioapic" ioapic: support "info irq" ioapic: some proper indents when dump info ioapic: support "info pic" doc: another fix to "info pic" target-i386: Mark cpu_vmexit noreturn target-i386: Allow interrupt injection after STGI target-i386: Add NMI interception to SVM memory/hmp: Print owners/parents in "info mtree" WHPX: register for unrecognized MSR exits ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-29tests/boot-serial: Do not delete the output file in case of errorsThomas Huth
Peter reported that the boot-serial tester sometimes runs into timeouts with SPARC guests. It's currently completely unclear whether this is due to too much load on the host machine (so that the guest really just ran too slow), or whether there is something wrong with the guest's firmware boot. For further debugging, we need the serial output of the guest in case of errors, so instead of unlinking the file immediately, this is now only done in case of success. In case of error, print the name of the file with the serial output via g_error() (which then also calls abort() internally to mark the test as failed). Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1526977831-31129-1-git-send-email-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-29hw/scsi: add VPD Block Limits emulationDaniel Henrique Barboza
The VPD Block Limits Inquiry page is optional, allowing SCSI devices to not implement it. This is the case for devices like the MegaRAID SAS 9361-8i and Microsemi PM8069. In case of SCSI passthrough, the response of this request is used by the QEMU SCSI layer to set the max_io_sectors that the guest device will support, based on the value of the max_sectors_kb that the device has set in the host at that time. Without this response, the guest kernel is free to assume any value of max_io_sectors for the SCSI device. If this value is greater than the value from the host, SCSI Sense errors will occur because the guest will send read/write requests that are larger than the underlying host device is configured to support. An example of this behavior can be seen in [1]. A workaround is to set the max_sectors_kb host value back in the guest kernel (a process that can be automated using rc.local startup scripts and the like), but this has several drawbacks: - it can be troublesome if the guest has many passthrough devices that needs this tuning; - if a change in max_sectors_kb is made in the host side, manual change in the guests will also be required; - during an OS install it is difficult, and sometimes not possible, to go to a terminal and change the max_sectors_kb prior to the installation. This means that the disk can't be used during the install process. The easiest alternative here is to roll back to scsi-hd, install the guest and then go back to SCSI passthrough when the installation is done and max_sectors_kb can be set. An easier way would be to QEMU handle the absence of the Block Limits VPD device response, setting max_io_sectors accordingly and allowing the guest to use the device without the hassle. This patch adds emulation of the Block Limits VPD response for SCSI passthrough devices of type TYPE_DISK that doesn't support it. The following changes were made: - scsi_handle_inquiry_reply will now check the available VPD pages from the Inquiry EVPD reply. In case the device does not - a new function called scsi_generic_set_vpd_bl_emulation, that is called during device realize, was created to set a new flag 'needs_vpd_bl_emulation' of the device. This function retrieves the Inquiry EVPD response of the device to check for VPD BL support. - scsi_handle_inquiry_reply will now check the available VPD pages from the Inquiry EVPD reply in case the device needs VPD BL emulation, adding the Block Limits page (0xb0) to the list. This will make the guest kernel aware of the support that we're now providing by emulation. - a new function scsi_emulate_block_limits creates the emulated Block Limits response. This function is called inside scsi_read_complete in case the device requires Block Limits VPD emulation and we detected a SCSI Sense error in the VPD Block Limits reply that was issued from the guest kernel to the device. This error is expected: we're reporting support from our side, but the device isn't aware of it. With this patch, the guest now queries the Block Limits page during the device configuration because it is being advertised in the Supported Pages response. It will either receive the Block Limits page from the hardware, if it supports it, or will receive an emulated response from QEMU. At any rate, the guest now has the information to set the max_sectors_kb parameter accordingly, sparing the user of SCSI sense errors that would happen without the emulated response and in the absence of Block Limits support from the hardware. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1566195 Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1566195 Reported-by: Dac Nguyen <dacng@us.ibm.com> Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20180627172432.11120-4-danielhb413@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-29hw/scsi: centralize SG_IO calls into single functionDaniel Henrique Barboza
For the VPD Block Limits emulation with SCSI passthrough, we'll issue an Inquiry request with EVPD set to retrieve the available VPD pages of the device. This would be done in a way similar of what scsi_generic_read_device_identification does: create a SCSI command and a reply buffer, fill in the sg_io_hdr_t structure, call blk_ioctl, check if an error occurred, process the response. This same process is done in other 2 functions, get_device_type and get_stream_blocksize. They differ in the command/reply buffer and post-processing, everything else is almost a copy/paste. Instead of adding a forth copy/pasted-ish code when adding the passthrough VPD BL emulation, this patch extirpates this repetition of those 3 functions and put it into a new one called scsi_SG_IO_FROM_DEV. Any future code that wants to execute an SG_DXFER_FROM_DEV to the device can use it, avoiding filling sg_io_hdr_t again and et cetera. Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20180627172432.11120-3-danielhb413@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-29hw/scsi: cleanups before VPD BL emulationDaniel Henrique Barboza
To add support for the emulation of Block Limits VPD page for passthrough devices, a few adjustments in the current code base is required to avoid repetition and improve clarity. In scsi-generic.c, detach the Inquiry handling from scsi_read_complete and put it into a new function called scsi_handle_inquiry_reply. This change aims to avoid cluttering of scsi_read_complete when we more logic in the Inquiry response handling is added in the next patches, centralizing the changes in the new function. In scsi-disk.c, take the build of all emulated VPD pages from scsi_disk_emulate_inquiry and make it available to other files into a non-static function called scsi_disk_emulate_vpd_page. Making it public will allow the future VPD BL emulation code for passthrough devices to use it from scsi-generic.c, avoiding copy/pasting this code solely for that purpose. It also has the advantage of providing emulation of all VPD pages in case we need to emulate other pages in other scenarios. As a bonus, scsi_disk_emulate_inquiry got tidier. Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20180627172432.11120-2-danielhb413@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>