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[176.184.33.214]) by smtp.gmail.com with ESMTPSA id t6-20020a2e7806000000b002d2607e6d29sm1152340ljc.70.2024.02.27.00.40.49 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Tue, 27 Feb 2024 00:40:51 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: qemu-ppc@nongnu.org, qemu-block@nongnu.org, qemu-arm@nongnu.org, Paolo Bonzini , Thomas Huth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , "Michael S. Tsirkin" , Igor Mammedov , Ani Sinha , Marcel Apfelbaum , Richard Henderson , Eduardo Habkost , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= Subject: [PULL 10/30] hw/acpi: move object_resolve_type_unambiguous to core QOM Date: Tue, 27 Feb 2024 09:39:26 +0100 Message-ID: <20240227083948.5427-11-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240227083948.5427-1-philmd@linaro.org> References: <20240227083948.5427-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::22d; envelope-from=philmd@linaro.org; helo=mail-lj1-x22d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org From: Paolo Bonzini object_resolve_type_unambiguous provides a useful functionality, that is currently emulated for example by usb_bus_find(). Move it to core code and add error reporting for increased generality. Signed-off-by: Paolo Bonzini Reviewed-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20240223124406.234509-2-pbonzini@redhat.com> [PMD: Fixed style] Signed-off-by: Philippe Mathieu-Daudé --- include/qom/object.h | 13 +++++++++++++ hw/i386/acpi-build.c | 20 +++++--------------- qom/object.c | 16 ++++++++++++++++ 3 files changed, 34 insertions(+), 15 deletions(-) diff --git a/include/qom/object.h b/include/qom/object.h index afccd24ca7..e9ed9550f0 100644 --- a/include/qom/object.h +++ b/include/qom/object.h @@ -1550,6 +1550,19 @@ Object *object_resolve_path(const char *path, bool *ambiguous); Object *object_resolve_path_type(const char *path, const char *typename, bool *ambiguous); +/** + * object_resolve_type_unambiguous: + * @typename: the type to look for + * @errp: pointer to error object + * + * Return the only object in the QOM tree of type @typename. + * If no match or more than one match is found, an error is + * returned. + * + * Returns: The matched object or NULL on path lookup failure. + */ +Object *object_resolve_type_unambiguous(const char *typename, Error **errp); + /** * object_resolve_path_at: * @parent: the object in which to resolve the path diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index d3ce96dd9f..896ff87519 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -192,21 +192,10 @@ static void init_common_fadt_data(MachineState *ms, Object *o, *data = fadt; } -static Object *object_resolve_type_unambiguous(const char *typename) -{ - bool ambig; - Object *o = object_resolve_path_type("", typename, &ambig); - - if (ambig || !o) { - return NULL; - } - return o; -} - static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) { - Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); - Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); + Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM, NULL); + Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE, NULL); Object *obj = piix ? piix : lpc; QObject *o; pm->cpu_hp_io_base = 0; @@ -1428,8 +1417,9 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm, AcpiMiscInfo *misc, Range *pci_hole, Range *pci_hole64, MachineState *machine) { - Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE); - Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE); + Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE, + NULL); + Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE, NULL); CrsRangeEntry *entry; Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; CrsRangeSet crs_range_set; diff --git a/qom/object.c b/qom/object.c index 2c4c64d2b6..d4a001cf41 100644 --- a/qom/object.c +++ b/qom/object.c @@ -2229,6 +2229,22 @@ Object *object_resolve_path_at(Object *parent, const char *path) return object_resolve_abs_path(parent, parts, TYPE_OBJECT); } +Object *object_resolve_type_unambiguous(const char *typename, Error **errp) +{ + bool ambig; + Object *o = object_resolve_path_type("", typename, &ambig); + + if (ambig) { + error_setg(errp, "More than one object of type %s", typename); + return NULL; + } + if (!o) { + error_setg(errp, "No object found of type %s", typename); + return NULL; + } + return o; +} + typedef struct StringProperty { char *(*get)(Object *, Error **);