From 33f0c061287fcb8c4ae97802374a6208778684a4 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:30 +0100 Subject: [PATCH 01/11] hw/i386/pc: Use qdev_prop_set_array() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-2-kwolf@redhat.com> Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Kevin Wolf --- hw/i386/pc.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 188bc9d0f8..29b9964733 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -44,6 +44,7 @@ #include "sysemu/reset.h" #include "kvm/kvm_i386.h" #include "hw/xen/xen.h" +#include "qapi/qmp/qlist.h" #include "qemu/error-report.h" #include "hw/acpi/cpu_hotplug.h" #include "acpi-build.h" @@ -1457,10 +1458,11 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, /* Declare the APIC range as the reserved MSI region */ char *resv_prop_str = g_strdup_printf("0xfee00000:0xfeefffff:%d", VIRTIO_IOMMU_RESV_MEM_T_MSI); + QList *reserved_regions = qlist_new(); + + qlist_append_str(reserved_regions, resv_prop_str); + qdev_prop_set_array(dev, "reserved-regions", reserved_regions); - object_property_set_uint(OBJECT(dev), "len-reserved-regions", 1, errp); - object_property_set_str(OBJECT(dev), "reserved-regions[0]", - resv_prop_str, errp); g_free(resv_prop_str); } From 31805a0aa46d8806fcdac7e1473251f40ca5b993 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:31 +0100 Subject: [PATCH 02/11] hw/arm/mps2-tz: Use qdev_prop_set_array() Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-3-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/arm/mps2-tz.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c index eae3639da2..668db5ed61 100644 --- a/hw/arm/mps2-tz.c +++ b/hw/arm/mps2-tz.c @@ -48,6 +48,7 @@ #include "qemu/units.h" #include "qemu/cutils.h" #include "qapi/error.h" +#include "qapi/qmp/qlist.h" #include "qemu/error-report.h" #include "hw/arm/boot.h" #include "hw/arm/armv7m.h" @@ -461,6 +462,7 @@ static MemoryRegion *make_scc(MPS2TZMachineState *mms, void *opaque, MPS2SCC *scc = opaque; DeviceState *sccdev; MPS2TZMachineClass *mmc = MPS2TZ_MACHINE_GET_CLASS(mms); + QList *oscclk; uint32_t i; object_initialize_child(OBJECT(mms), "scc", scc, TYPE_MPS2_SCC); @@ -469,11 +471,13 @@ static MemoryRegion *make_scc(MPS2TZMachineState *mms, void *opaque, qdev_prop_set_uint32(sccdev, "scc-cfg4", 0x2); qdev_prop_set_uint32(sccdev, "scc-aid", 0x00200008); qdev_prop_set_uint32(sccdev, "scc-id", mmc->scc_id); - qdev_prop_set_uint32(sccdev, "len-oscclk", mmc->len_oscclk); + + oscclk = qlist_new(); for (i = 0; i < mmc->len_oscclk; i++) { - g_autofree char *propname = g_strdup_printf("oscclk[%u]", i); - qdev_prop_set_uint32(sccdev, propname, mmc->oscclk[i]); + qlist_append_int(oscclk, mmc->oscclk[i]); } + qdev_prop_set_array(sccdev, "oscclk", oscclk); + sysbus_realize(SYS_BUS_DEVICE(scc), &error_fatal); return sysbus_mmio_get_region(SYS_BUS_DEVICE(sccdev), 0); } From 80e09151c202d5a5b740cf1b25ea59fac342f879 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:32 +0100 Subject: [PATCH 03/11] hw/arm/mps2: Use qdev_prop_set_array() Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-4-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/arm/mps2.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c index d92fd60684..292a180ad2 100644 --- a/hw/arm/mps2.c +++ b/hw/arm/mps2.c @@ -48,6 +48,7 @@ #include "net/net.h" #include "hw/watchdog/cmsdk-apb-watchdog.h" #include "hw/qdev-clock.h" +#include "qapi/qmp/qlist.h" #include "qom/object.h" typedef enum MPS2FPGAType { @@ -138,6 +139,7 @@ static void mps2_common_init(MachineState *machine) MemoryRegion *system_memory = get_system_memory(); MachineClass *mc = MACHINE_GET_CLASS(machine); DeviceState *armv7m, *sccdev; + QList *oscclk; int i; if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) { @@ -402,10 +404,12 @@ static void mps2_common_init(MachineState *machine) qdev_prop_set_uint32(sccdev, "scc-aid", 0x00200008); qdev_prop_set_uint32(sccdev, "scc-id", mmc->scc_id); /* All these FPGA images have the same OSCCLK configuration */ - qdev_prop_set_uint32(sccdev, "len-oscclk", 3); - qdev_prop_set_uint32(sccdev, "oscclk[0]", 50000000); - qdev_prop_set_uint32(sccdev, "oscclk[1]", 24576000); - qdev_prop_set_uint32(sccdev, "oscclk[2]", 25000000); + oscclk = qlist_new(); + qlist_append_int(oscclk, 50000000); + qlist_append_int(oscclk, 24576000); + qlist_append_int(oscclk, 25000000); + qdev_prop_set_array(sccdev, "oscclk", oscclk); + sysbus_realize(SYS_BUS_DEVICE(&mms->scc), &error_fatal); sysbus_mmio_map(SYS_BUS_DEVICE(sccdev), 0, 0x4002f000); object_initialize_child(OBJECT(mms), "fpgaio", From d210fa2f055bc1528cfb32c1b644cebbe36ff220 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:33 +0100 Subject: [PATCH 04/11] hw/arm/sbsa-ref: Use qdev_prop_set_array() Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-5-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/arm/sbsa-ref.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c index bce44690e5..f3c9704693 100644 --- a/hw/arm/sbsa-ref.c +++ b/hw/arm/sbsa-ref.c @@ -48,6 +48,7 @@ #include "hw/char/pl011.h" #include "hw/watchdog/sbsa_gwdt.h" #include "net/net.h" +#include "qapi/qmp/qlist.h" #include "qom/object.h" #define RAMLIMIT_GB 8192 @@ -437,6 +438,7 @@ static void create_gic(SBSAMachineState *sms, MemoryRegion *mem) SysBusDevice *gicbusdev; const char *gictype; uint32_t redist0_capacity, redist0_count; + QList *redist_region_count; int i; gictype = gicv3_class_name(); @@ -455,8 +457,9 @@ static void create_gic(SBSAMachineState *sms, MemoryRegion *mem) sbsa_ref_memmap[SBSA_GIC_REDIST].size / GICV3_REDIST_SIZE; redist0_count = MIN(smp_cpus, redist0_capacity); - qdev_prop_set_uint32(sms->gic, "len-redist-region-count", 1); - qdev_prop_set_uint32(sms->gic, "redist-region-count[0]", redist0_count); + redist_region_count = qlist_new(); + qlist_append_int(redist_region_count, redist0_count); + qdev_prop_set_array(sms->gic, "redist-region-count", redist_region_count); object_property_set_link(OBJECT(sms->gic), "sysmem", OBJECT(mem), &error_fatal); From 50ab8648c0ae513ca882b07571837b41668655fd Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:34 +0100 Subject: [PATCH 05/11] hw/arm/vexpress: Use qdev_prop_set_array() Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-6-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/arm/vexpress.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/hw/arm/vexpress.c b/hw/arm/vexpress.c index c08ea34e92..fd981f4c33 100644 --- a/hw/arm/vexpress.c +++ b/hw/arm/vexpress.c @@ -43,6 +43,7 @@ #include "hw/cpu/a15mpcore.h" #include "hw/i2c/arm_sbcon_i2c.h" #include "hw/sd/sd.h" +#include "qapi/qmp/qlist.h" #include "qom/object.h" #include "audio/audio.h" @@ -544,6 +545,7 @@ static void vexpress_common_init(MachineState *machine) ram_addr_t vram_size, sram_size; MemoryRegion *sysmem = get_system_memory(); const hwaddr *map = daughterboard->motherboard_map; + QList *db_voltage, *db_clock; int i; daughterboard->init(vms, machine->ram_size, machine->cpu_type, pic); @@ -584,20 +586,19 @@ static void vexpress_common_init(MachineState *machine) sysctl = qdev_new("realview_sysctl"); qdev_prop_set_uint32(sysctl, "sys_id", sys_id); qdev_prop_set_uint32(sysctl, "proc_id", daughterboard->proc_id); - qdev_prop_set_uint32(sysctl, "len-db-voltage", - daughterboard->num_voltage_sensors); + + db_voltage = qlist_new(); for (i = 0; i < daughterboard->num_voltage_sensors; i++) { - char *propname = g_strdup_printf("db-voltage[%d]", i); - qdev_prop_set_uint32(sysctl, propname, daughterboard->voltages[i]); - g_free(propname); + qlist_append_int(db_voltage, daughterboard->voltages[i]); } - qdev_prop_set_uint32(sysctl, "len-db-clock", - daughterboard->num_clocks); + qdev_prop_set_array(sysctl, "db-voltage", db_voltage); + + db_clock = qlist_new(); for (i = 0; i < daughterboard->num_clocks; i++) { - char *propname = g_strdup_printf("db-clock[%d]", i); - qdev_prop_set_uint32(sysctl, propname, daughterboard->clocks[i]); - g_free(propname); + qlist_append_int(db_clock, daughterboard->clocks[i]); } + qdev_prop_set_array(sysctl, "db-clock", db_clock); + sysbus_realize_and_unref(SYS_BUS_DEVICE(sysctl), &error_fatal); sysbus_mmio_map(SYS_BUS_DEVICE(sysctl), 0, map[VE_SYSREGS]); From 3c86b9dadc378db207d36f6f9c988d6886c8a2e3 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:35 +0100 Subject: [PATCH 06/11] hw/arm/virt: Use qdev_prop_set_array() Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-7-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/arm/virt.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 0a16ab3095..85e3c5ba9d 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -69,6 +69,7 @@ #include "hw/firmware/smbios.h" #include "qapi/visitor.h" #include "qapi/qapi-visit-common.h" +#include "qapi/qmp/qlist.h" #include "standard-headers/linux/input.h" #include "hw/arm/smmuv3.h" #include "hw/acpi/acpi.h" @@ -752,14 +753,23 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) } if (vms->gic_version != VIRT_GIC_VERSION_2) { + QList *redist_region_count; uint32_t redist0_capacity = virt_redist_capacity(vms, VIRT_GIC_REDIST); uint32_t redist0_count = MIN(smp_cpus, redist0_capacity); nb_redist_regions = virt_gicv3_redist_region_count(vms); - qdev_prop_set_uint32(vms->gic, "len-redist-region-count", - nb_redist_regions); - qdev_prop_set_uint32(vms->gic, "redist-region-count[0]", redist0_count); + redist_region_count = qlist_new(); + qlist_append_int(redist_region_count, redist0_count); + if (nb_redist_regions == 2) { + uint32_t redist1_capacity = + virt_redist_capacity(vms, VIRT_HIGH_GIC_REDIST2); + + qlist_append_int(redist_region_count, + MIN(smp_cpus - redist0_count, redist1_capacity)); + } + qdev_prop_set_array(vms->gic, "redist-region-count", + redist_region_count); if (!kvm_irqchip_in_kernel()) { if (vms->tcg_its) { @@ -768,14 +778,6 @@ static void create_gic(VirtMachineState *vms, MemoryRegion *mem) qdev_prop_set_bit(vms->gic, "has-lpi", true); } } - - if (nb_redist_regions == 2) { - uint32_t redist1_capacity = - virt_redist_capacity(vms, VIRT_HIGH_GIC_REDIST2); - - qdev_prop_set_uint32(vms->gic, "redist-region-count[1]", - MIN(smp_cpus - redist0_count, redist1_capacity)); - } } else { if (!kvm_irqchip_in_kernel()) { qdev_prop_set_bit(vms->gic, "has-virtualization-extensions", @@ -2748,6 +2750,7 @@ static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, virtio_md_pci_pre_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp); } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) { hwaddr db_start = 0, db_end = 0; + QList *reserved_regions; char *resv_prop_str; if (vms->iommu != VIRT_IOMMU_NONE) { @@ -2774,9 +2777,9 @@ static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, db_start, db_end, VIRTIO_IOMMU_RESV_MEM_T_MSI); - object_property_set_uint(OBJECT(dev), "len-reserved-regions", 1, errp); - object_property_set_str(OBJECT(dev), "reserved-regions[0]", - resv_prop_str, errp); + reserved_regions = qlist_new(); + qlist_append_str(reserved_regions, resv_prop_str); + qdev_prop_set_array(dev, "reserved-regions", reserved_regions); g_free(resv_prop_str); } } From 2394c782a9040891429d0f160cf695bf00379a0d Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:36 +0100 Subject: [PATCH 07/11] hw/arm/xlnx-versal: Use qdev_prop_set_array() Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-8-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/arm/xlnx-versal.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/hw/arm/xlnx-versal.c b/hw/arm/xlnx-versal.c index 4f74a64a0d..9600551c44 100644 --- a/hw/arm/xlnx-versal.c +++ b/hw/arm/xlnx-versal.c @@ -12,6 +12,7 @@ #include "qemu/osdep.h" #include "qemu/units.h" #include "qapi/error.h" +#include "qapi/qmp/qlist.h" #include "qemu/module.h" #include "hw/sysbus.h" #include "net/net.h" @@ -69,6 +70,7 @@ static void versal_create_apu_gic(Versal *s, qemu_irq *pic) }; SysBusDevice *gicbusdev; DeviceState *gicdev; + QList *redist_region_count; int nr_apu_cpus = ARRAY_SIZE(s->fpd.apu.cpu); int i; @@ -79,8 +81,11 @@ static void versal_create_apu_gic(Versal *s, qemu_irq *pic) qdev_prop_set_uint32(gicdev, "revision", 3); qdev_prop_set_uint32(gicdev, "num-cpu", nr_apu_cpus); qdev_prop_set_uint32(gicdev, "num-irq", XLNX_VERSAL_NR_IRQS + 32); - qdev_prop_set_uint32(gicdev, "len-redist-region-count", 1); - qdev_prop_set_uint32(gicdev, "redist-region-count[0]", nr_apu_cpus); + + redist_region_count = qlist_new(); + qlist_append_int(redist_region_count, nr_apu_cpus); + qdev_prop_set_array(gicdev, "redist-region-count", redist_region_count); + qdev_prop_set_bit(gicdev, "has-security-extensions", true); sysbus_realize(SYS_BUS_DEVICE(&s->fpd.apu.gic), &error_fatal); From 670581f932d9415e843de8a5e31e041938248237 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:37 +0100 Subject: [PATCH 08/11] hw/rx/rx62n: Use qdev_prop_set_array() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead of manually setting "foo-len" and "foo[i]" properties, build a QList and use the new qdev_prop_set_array() helper to set the whole array property with a single call. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20231109174240.72376-9-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/rx/rx62n.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/hw/rx/rx62n.c b/hw/rx/rx62n.c index d00fcb0ef0..4dc44afd9d 100644 --- a/hw/rx/rx62n.c +++ b/hw/rx/rx62n.c @@ -28,6 +28,7 @@ #include "hw/sysbus.h" #include "hw/qdev-properties.h" #include "sysemu/sysemu.h" +#include "qapi/qmp/qlist.h" #include "qom/object.h" /* @@ -130,22 +131,22 @@ static void register_icu(RX62NState *s) { int i; SysBusDevice *icu; + QList *ipr_map, *trigger_level; object_initialize_child(OBJECT(s), "icu", &s->icu, TYPE_RX_ICU); icu = SYS_BUS_DEVICE(&s->icu); - qdev_prop_set_uint32(DEVICE(icu), "len-ipr-map", NR_IRQS); + + ipr_map = qlist_new(); for (i = 0; i < NR_IRQS; i++) { - char propname[32]; - snprintf(propname, sizeof(propname), "ipr-map[%d]", i); - qdev_prop_set_uint32(DEVICE(icu), propname, ipr_table[i]); + qlist_append_int(ipr_map, ipr_table[i]); } - qdev_prop_set_uint32(DEVICE(icu), "len-trigger-level", - ARRAY_SIZE(levelirq)); + qdev_prop_set_array(DEVICE(icu), "ipr-map", ipr_map); + + trigger_level = qlist_new(); for (i = 0; i < ARRAY_SIZE(levelirq); i++) { - char propname[32]; - snprintf(propname, sizeof(propname), "trigger-level[%d]", i); - qdev_prop_set_uint32(DEVICE(icu), propname, levelirq[i]); + qlist_append_int(trigger_level, levelirq[i]); } + qdev_prop_set_array(DEVICE(icu), "trigger-level", trigger_level); for (i = 0; i < NR_IRQS; i++) { s->irq[i] = qdev_get_gpio_in(DEVICE(icu), i); From 125062e791258c68109f3a59cb7aca3dadbdb5a3 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:38 +0100 Subject: [PATCH 09/11] qom: Add object_property_set_default_list() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This function provides a default for properties that are accessed using the list visitor interface. The default is always an empty list. Signed-off-by: Kevin Wolf Reviewed-by: Peter Maydell Message-ID: <20231109174240.72376-10-kwolf@redhat.com> Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Kevin Wolf --- include/qom/object.h | 8 ++++++++ qom/object.c | 6 ++++++ 2 files changed, 14 insertions(+) diff --git a/include/qom/object.h b/include/qom/object.h index ef7258a5e1..afccd24ca7 100644 --- a/include/qom/object.h +++ b/include/qom/object.h @@ -1093,6 +1093,14 @@ void object_property_set_default_bool(ObjectProperty *prop, bool value); */ void object_property_set_default_str(ObjectProperty *prop, const char *value); +/** + * object_property_set_default_list: + * @prop: the property to set + * + * Set the property default value to be an empty list. + */ +void object_property_set_default_list(ObjectProperty *prop); + /** * object_property_set_default_int: * @prop: the property to set diff --git a/qom/object.c b/qom/object.c index 8557fe8e4e..95c0dc8285 100644 --- a/qom/object.c +++ b/qom/object.c @@ -31,6 +31,7 @@ * of the QOM core on QObject? */ #include "qom/qom-qobject.h" #include "qapi/qmp/qbool.h" +#include "qapi/qmp/qlist.h" #include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" #include "qemu/error-report.h" @@ -1588,6 +1589,11 @@ void object_property_set_default_str(ObjectProperty *prop, const char *value) object_property_set_default(prop, QOBJECT(qstring_from_str(value))); } +void object_property_set_default_list(ObjectProperty *prop) +{ + object_property_set_default(prop, QOBJECT(qlist_new())); +} + void object_property_set_default_int(ObjectProperty *prop, int64_t value) { object_property_set_default(prop, QOBJECT(qnum_from_int(value))); From 3257b854d81ca3ebe6f14375e83a0ed2db3c7562 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:39 +0100 Subject: [PATCH 10/11] qdev: Make netdev properties work as list elements MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The 'name' parameter of QOM setters is primarily used to specify the name of the currently parsed input element in the visitor interface. For top-level qdev properties, this is always set and matches 'prop->name'. However, for list elements it is NULL, because each element of a list doesn't have a separate name. Passing a non-NULL value runs into assertion failures in the visitor code. Therefore, using 'name' in error messages is not right for property types that are used in lists, because "(null)" (or even a segfault) isn't very helpful to identify what QEMU is complaining about. Change netdev properties to use 'prop->name' instead, which will contain the name of the array property after switching array properties to lists in the external interface. (This is still not perfect, as it doesn't identify which element in the list caused the error, but strictly better than before.) Signed-off-by: Kevin Wolf Message-ID: <20231109174240.72376-11-kwolf@redhat.com> Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Kevin Wolf --- hw/core/qdev-properties-system.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c index b46d16cd2c..1473ab3d5e 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -450,7 +450,7 @@ static void set_netdev(Object *obj, Visitor *v, const char *name, peers_ptr->queues = queues; out: - error_set_from_qdev_prop_error(errp, err, obj, name, str); + error_set_from_qdev_prop_error(errp, err, obj, prop->name, str); g_free(str); } From b06f8b500da2a5a73dfb15de17cd96ad2385fdc7 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Thu, 9 Nov 2023 18:42:40 +0100 Subject: [PATCH 11/11] qdev: Rework array properties based on list visitor Until now, array properties are actually implemented with a hack that uses multiple properties on the QOM level: a static "foo-len" property and after it is set, dynamically created "foo[i]" properties. In external interfaces (-device on the command line and device_add in QMP), this interface was broken by commit f3558b1b ('qdev: Base object creation on QDict rather than QemuOpts') because QDicts are unordered and therefore it could happen that QEMU tried to set the indexed properties before setting the length, which fails and effectively makes array properties inaccessible. In particular, this affects the 'ports' property of the 'rocker' device, which used to be configured like this: -device rocker,len-ports=2,ports[0]=dev0,ports[1]=dev1 This patch reworks the external interface so that instead of using a separate top-level property for the length and for each element, we use a single true array property that accepts a list value. In the external interfaces, this is naturally expressed as a JSON list and makes array properties accessible again. The new syntax looks like this: -device '{"driver":"rocker","ports":["dev0","dev1"]}' Creating an array property on the command line without using JSON format is currently not possible. This could be fixed by switching from QemuOpts to a keyval parser, which however requires consideration of the compatibility implications. All internal users of devices with array properties go through qdev_prop_set_array() at this point, so updating it takes care of all of them. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1090 Fixes: f3558b1b763683bb877f7dd5b282469cdadc65c3 Signed-off-by: Kevin Wolf Message-ID: <20231109174240.72376-12-kwolf@redhat.com> Signed-off-by: Kevin Wolf --- hw/core/qdev-properties.c | 241 +++++++++++++++++++++++------------ include/hw/qdev-properties.h | 35 +++-- 2 files changed, 174 insertions(+), 102 deletions(-) diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c index 950ef48e01..91632f7be9 100644 --- a/hw/core/qdev-properties.c +++ b/hw/core/qdev-properties.c @@ -546,98 +546,187 @@ const PropertyInfo qdev_prop_size32 = { /* --- support for array properties --- */ -/* Used as an opaque for the object properties we add for each - * array element. Note that the struct Property must be first - * in the struct so that a pointer to this works as the opaque - * for the underlying element's property hooks as well as for - * our own release callback. - */ -typedef struct { - struct Property prop; - char *propname; - ObjectPropertyRelease *release; -} ArrayElementProperty; +typedef struct ArrayElementList ArrayElementList; -/* object property release callback for array element properties: - * we call the underlying element's property release hook, and - * then free the memory we allocated when we added the property. +struct ArrayElementList { + ArrayElementList *next; + void *value; +}; + +/* + * Given an array property @parent_prop in @obj, return a Property for a + * specific element of the array. Arrays are backed by an uint32_t length field + * and an element array. @elem points at an element in this element array. */ -static void array_element_release(Object *obj, const char *name, void *opaque) +static Property array_elem_prop(Object *obj, Property *parent_prop, + const char *name, char *elem) { - ArrayElementProperty *p = opaque; - if (p->release) { - p->release(obj, name, opaque); - } - g_free(p->propname); - g_free(p); + return (Property) { + .info = parent_prop->arrayinfo, + .name = name, + /* + * This ugly piece of pointer arithmetic sets up the offset so + * that when the underlying release hook calls qdev_get_prop_ptr + * they get the right answer despite the array element not actually + * being inside the device struct. + */ + .offset = (uintptr_t)elem - (uintptr_t)obj, + }; } -static void set_prop_arraylen(Object *obj, Visitor *v, const char *name, - void *opaque, Error **errp) +/* + * Object property release callback for array properties: We call the + * underlying element's property release hook for each element. + * + * Note that it is the responsibility of the individual device's deinit + * to free the array proper. + */ +static void release_prop_array(Object *obj, const char *name, void *opaque) { - /* Setter for the property which defines the length of a - * variable-sized property array. As well as actually setting the - * array-length field in the device struct, we have to create the - * array itself and dynamically add the corresponding properties. - */ Property *prop = opaque; uint32_t *alenptr = object_field_prop_ptr(obj, prop); void **arrayptr = (void *)obj + prop->arrayoffset; - void *eltptr; - const char *arrayname; + char *elem = *arrayptr; int i; + if (!prop->arrayinfo->release) { + return; + } + + for (i = 0; i < *alenptr; i++) { + Property elem_prop = array_elem_prop(obj, prop, name, elem); + prop->arrayinfo->release(obj, NULL, &elem_prop); + elem += prop->arrayfieldsize; + } +} + +/* + * Setter for an array property. This sets both the array length (which + * is technically the property field in the object) and the array itself + * (a pointer to which is stored in the additional field described by + * prop->arrayoffset). + */ +static void set_prop_array(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + ERRP_GUARD(); + Property *prop = opaque; + uint32_t *alenptr = object_field_prop_ptr(obj, prop); + void **arrayptr = (void *)obj + prop->arrayoffset; + ArrayElementList *list, *elem, *next; + const size_t size = sizeof(*list); + char *elemptr; + bool ok = true; + if (*alenptr) { error_setg(errp, "array size property %s may not be set more than once", name); return; } - if (!visit_type_uint32(v, name, alenptr, errp)) { - return; - } - if (!*alenptr) { + + if (!visit_start_list(v, name, (GenericList **) &list, size, errp)) { return; } - /* DEFINE_PROP_ARRAY guarantees that name should start with this prefix; - * strip it off so we can get the name of the array itself. - */ - assert(strncmp(name, PROP_ARRAY_LEN_PREFIX, - strlen(PROP_ARRAY_LEN_PREFIX)) == 0); - arrayname = name + strlen(PROP_ARRAY_LEN_PREFIX); + /* Read the whole input into a temporary list */ + elem = list; + while (elem) { + Property elem_prop; - /* Note that it is the responsibility of the individual device's deinit - * to free the array proper. + elem->value = g_malloc0(prop->arrayfieldsize); + elem_prop = array_elem_prop(obj, prop, name, elem->value); + prop->arrayinfo->set(obj, v, NULL, &elem_prop, errp); + if (*errp) { + ok = false; + goto out_obj; + } + if (*alenptr == INT_MAX) { + error_setg(errp, "array is too big"); + return; + } + (*alenptr)++; + elem = (ArrayElementList *) visit_next_list(v, (GenericList*) elem, + size); + } + + ok = visit_check_list(v, errp); +out_obj: + visit_end_list(v, (void**) &list); + + if (!ok) { + for (elem = list; elem; elem = next) { + Property elem_prop = array_elem_prop(obj, prop, name, + elem->value); + if (prop->arrayinfo->release) { + prop->arrayinfo->release(obj, NULL, &elem_prop); + } + next = elem->next; + g_free(elem->value); + g_free(elem); + } + return; + } + + /* + * Now that we know how big the array has to be, move the data over to a + * linear array and free the temporary list. */ - *arrayptr = eltptr = g_malloc0(*alenptr * prop->arrayfieldsize); - for (i = 0; i < *alenptr; i++, eltptr += prop->arrayfieldsize) { - char *propname = g_strdup_printf("%s[%d]", arrayname, i); - ArrayElementProperty *arrayprop = g_new0(ArrayElementProperty, 1); - arrayprop->release = prop->arrayinfo->release; - arrayprop->propname = propname; - arrayprop->prop.info = prop->arrayinfo; - arrayprop->prop.name = propname; - /* This ugly piece of pointer arithmetic sets up the offset so - * that when the underlying get/set hooks call qdev_get_prop_ptr - * they get the right answer despite the array element not actually - * being inside the device struct. - */ - arrayprop->prop.offset = eltptr - (void *)obj; - assert(object_field_prop_ptr(obj, &arrayprop->prop) == eltptr); - object_property_add(obj, propname, - arrayprop->prop.info->name, - field_prop_getter(arrayprop->prop.info), - field_prop_setter(arrayprop->prop.info), - array_element_release, - arrayprop); + *arrayptr = g_malloc_n(*alenptr, prop->arrayfieldsize); + elemptr = *arrayptr; + for (elem = list; elem; elem = next) { + memcpy(elemptr, elem->value, prop->arrayfieldsize); + elemptr += prop->arrayfieldsize; + next = elem->next; + g_free(elem->value); + g_free(elem); } } -const PropertyInfo qdev_prop_arraylen = { - .name = "uint32", - .get = get_uint32, - .set = set_prop_arraylen, - .set_default_value = qdev_propinfo_set_default_value_uint, +static void get_prop_array(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + ERRP_GUARD(); + Property *prop = opaque; + uint32_t *alenptr = object_field_prop_ptr(obj, prop); + void **arrayptr = (void *)obj + prop->arrayoffset; + char *elem = *arrayptr; + GenericList *list; + const size_t list_elem_size = sizeof(*list) + prop->arrayfieldsize; + int i; + bool ok; + + if (!visit_start_list(v, name, &list, list_elem_size, errp)) { + return; + } + + for (i = 0; i < *alenptr; i++) { + Property elem_prop = array_elem_prop(obj, prop, name, elem); + prop->arrayinfo->get(obj, v, NULL, &elem_prop, errp); + if (*errp) { + goto out_obj; + } + elem += prop->arrayfieldsize; + } + + /* visit_check_list() can only fail for input visitors */ + ok = visit_check_list(v, errp); + assert(ok); + +out_obj: + visit_end_list(v, (void**) &list); +} + +static void default_prop_array(ObjectProperty *op, const Property *prop) +{ + object_property_set_default_list(op); +} + +const PropertyInfo qdev_prop_array = { + .name = "list", + .get = get_prop_array, + .set = set_prop_array, + .release = release_prop_array, + .set_default_value = default_prop_array, }; /* --- public helpers --- */ @@ -743,20 +832,8 @@ void qdev_prop_set_enum(DeviceState *dev, const char *name, int value) void qdev_prop_set_array(DeviceState *dev, const char *name, QList *values) { - const QListEntry *entry; - g_autofree char *prop_len = g_strdup_printf("len-%s", name); - uint32_t i = 0; - - object_property_set_int(OBJECT(dev), prop_len, qlist_size(values), - &error_abort); - - QLIST_FOREACH_ENTRY(values, entry) { - g_autofree char *prop_idx = g_strdup_printf("%s[%u]", name, i); - object_property_set_qobject(OBJECT(dev), prop_idx, entry->value, - &error_abort); - i++; - } - + object_property_set_qobject(OBJECT(dev), name, QOBJECT(values), + &error_abort); qobject_unref(values); } diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index 7fa2fdb7c9..25743a29a0 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -61,7 +61,7 @@ extern const PropertyInfo qdev_prop_size; extern const PropertyInfo qdev_prop_string; extern const PropertyInfo qdev_prop_on_off_auto; extern const PropertyInfo qdev_prop_size32; -extern const PropertyInfo qdev_prop_arraylen; +extern const PropertyInfo qdev_prop_array; extern const PropertyInfo qdev_prop_link; #define DEFINE_PROP(_name, _state, _field, _prop, _type, ...) { \ @@ -115,8 +115,6 @@ extern const PropertyInfo qdev_prop_link; .bitmask = (_bitmask), \ .set_default = false) -#define PROP_ARRAY_LEN_PREFIX "len-" - /** * DEFINE_PROP_ARRAY: * @_name: name of the array @@ -127,28 +125,25 @@ extern const PropertyInfo qdev_prop_link; * @_arrayprop: PropertyInfo defining what property the array elements have * @_arraytype: C type of the array elements * - * Define device properties for a variable-length array _name. A - * static property "len-arrayname" is defined. When the device creator - * sets this property to the desired length of array, further dynamic - * properties "arrayname[0]", "arrayname[1]", ... are defined so the - * device creator can set the array element values. Setting the - * "len-arrayname" property more than once is an error. + * Define device properties for a variable-length array _name. The array is + * represented as a list in the visitor interface. * - * When the array length is set, the @_field member of the device + * @_arraytype is required to be movable with memcpy(). + * + * When the array property is set, the @_field member of the device * struct is set to the array length, and @_arrayfield is set to point - * to (zero-initialised) memory allocated for the array. For a zero - * length array, @_field will be set to 0 and @_arrayfield to NULL. + * to the memory allocated for the array. + * * It is the responsibility of the device deinit code to free the * @_arrayfield memory. */ -#define DEFINE_PROP_ARRAY(_name, _state, _field, \ - _arrayfield, _arrayprop, _arraytype) \ - DEFINE_PROP((PROP_ARRAY_LEN_PREFIX _name), \ - _state, _field, qdev_prop_arraylen, uint32_t, \ - .set_default = true, \ - .defval.u = 0, \ - .arrayinfo = &(_arrayprop), \ - .arrayfieldsize = sizeof(_arraytype), \ +#define DEFINE_PROP_ARRAY(_name, _state, _field, \ + _arrayfield, _arrayprop, _arraytype) \ + DEFINE_PROP(_name, _state, _field, qdev_prop_array, uint32_t, \ + .set_default = true, \ + .defval.u = 0, \ + .arrayinfo = &(_arrayprop), \ + .arrayfieldsize = sizeof(_arraytype), \ .arrayoffset = offsetof(_state, _arrayfield)) #define DEFINE_PROP_LINK(_name, _state, _field, _type, _ptr_type) \