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Iglesias" , Ruslan_Ruslichenko@epam.com, balaton@eik.bme.hu Subject: [PATCH v2 12/33] hw/core/fdt_generic_util: add TYPE_FDT_GENERIC_MMAP Date: Thu, 19 Feb 2026 15:33:11 +0100 Message-ID: <20260219143332.3316679-13-ruslichenko.r@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260219143332.3316679-1-ruslichenko.r@gmail.com> References: <20260219143332.3316679-1-ruslichenko.r@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::430; envelope-from=ruslichenko.r@gmail.com; helo=mail-wr1-x430.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1771511865036154100 Content-Type: text/plain; charset="utf-8" From: Ruslan Ruslichenko Add new FDT_GENERIC_MMAP class and interface to allow devices to register own handlers for mapping memory regions in device tree's 'reg' property. Signed-off-by: Ruslan Ruslichenko --- hw/core/fdt_generic_util.c | 11 ++++++++ include/hw/core/fdt_generic_util.h | 44 ++++++++++++++++++++++++++++++ 2 files changed, 55 insertions(+) diff --git a/hw/core/fdt_generic_util.c b/hw/core/fdt_generic_util.c index 43fa862f31..a9ae56d1c3 100644 --- a/hw/core/fdt_generic_util.c +++ b/hw/core/fdt_generic_util.c @@ -711,3 +711,14 @@ static int fdt_init_qdev(char *node_path, FDTMachineIn= fo *fdti, char *compat) return 0; } =20 +static const TypeInfo fdt_generic_mmap_info =3D { + .name =3D TYPE_FDT_GENERIC_MMAP, + .parent =3D TYPE_INTERFACE, + .class_size =3D sizeof(FDTGenericMMapClass), +}; + +static void fdt_generic_register_types(void) +{ + type_register_static(&fdt_generic_mmap_info); +} +type_init(fdt_generic_register_types) diff --git a/include/hw/core/fdt_generic_util.h b/include/hw/core/fdt_gener= ic_util.h index e18c4f9c8b..38086ec1e4 100644 --- a/include/hw/core/fdt_generic_util.h +++ b/include/hw/core/fdt_generic_util.h @@ -16,4 +16,48 @@ =20 FDTMachineInfo *fdt_generic_create_machine(void *fdt, qemu_irq *cpu_irq); =20 +#define TYPE_FDT_GENERIC_MMAP "fdt-generic-mmap" + +#define FDT_GENERIC_MMAP_CLASS(klass) \ + OBJECT_CLASS_CHECK(FDTGenericMMapClass, (klass), TYPE_FDT_GENERIC_MMA= P) +#define FDT_GENERIC_MMAP_GET_CLASS(obj) \ + OBJECT_GET_CLASS(FDTGenericMMapClass, (obj), TYPE_FDT_GENERIC_MMAP) +#define FDT_GENERIC_MMAP(obj) \ + INTERFACE_CHECK(FDTGenericMMap, (obj), TYPE_FDT_GENERIC_MMAP) + +typedef struct FDTGenericMMap { + /*< private >*/ + Object parent_obj; +} FDTGenericMMap; + +/* + * The number of "things" in the tuple. Not to be confused with the cell l= ength + * of the tuple (which is variable based on content + */ + +#define FDT_GENERIC_REG_TUPLE_LENGTH 4 + +typedef struct FDTGenericRegPropInfo { + int n; + union { + struct { + uint64_t *a; + uint64_t *s; + uint64_t *b; + uint64_t *p; + }; + uint64_t *x[FDT_GENERIC_REG_TUPLE_LENGTH]; + }; + Object **parents; +} FDTGenericRegPropInfo; + +typedef struct FDTGenericMMapClass { + /*< private >*/ + InterfaceClass parent_class; + + /*< public >*/ + bool (*parse_reg)(FDTGenericMMap *obj, FDTGenericRegPropInfo info, + Error **errp); +} FDTGenericMMapClass; + #endif /* FDT_GENERIC_UTIL_H */ --=20 2.43.0