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GET /api/1.0/patches/2219355/?format=api
{ "id": 2219355, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2219355/?format=api", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.0/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260402215629.745866-6-ruslichenko.r@gmail.com>", "date": "2026-04-02T21:55:50", "name": "[v3,05/33] hw/core/fdt_generic: implement FDT machine creation helpers", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "3f9e7e148a64c69e6ffcaf357f06f195703e5415", "submitter": { "id": 92275, "url": "http://patchwork.ozlabs.org/api/1.0/people/92275/?format=api", "name": "Ruslan Ruslichenko", "email": "ruslichenko.r@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260402215629.745866-6-ruslichenko.r@gmail.com/mbox/", "series": [ { "id": 498555, "url": "http://patchwork.ozlabs.org/api/1.0/series/498555/?format=api", "date": "2026-04-02T21:55:47", "name": "hw/arm: Introduce generic FDT-driven machine", "version": 3, "mbox": "http://patchwork.ozlabs.org/series/498555/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2219355/checks/", "tags": {}, "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=dxx55HgP;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fmwl56Sqlz1xtJ\n\tfor <incoming@patchwork.ozlabs.org>; Fri, 03 Apr 2026 09:00:17 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1w8Q23-0008GD-Sp; Thu, 02 Apr 2026 17:56:55 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <ruslichenko.r@gmail.com>)\n id 1w8Q21-0008Dq-4l\n for qemu-devel@nongnu.org; Thu, 02 Apr 2026 17:56:53 -0400", "from mail-ej1-x634.google.com ([2a00:1450:4864:20::634])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)\n (Exim 4.90_1) (envelope-from <ruslichenko.r@gmail.com>)\n id 1w8Q1z-00073l-H1\n for qemu-devel@nongnu.org; Thu, 02 Apr 2026 17:56:52 -0400", "by mail-ej1-x634.google.com with SMTP id\n a640c23a62f3a-b9825ba7f9dso419697866b.0\n for <qemu-devel@nongnu.org>; Thu, 02 Apr 2026 14:56:51 -0700 (PDT)", "from thinkpad-t470s.. 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Iglesias\" <edgar.iglesias@gmail.com>,\n Ruslan_Ruslichenko@epam.com, balaton@eik.bme.hu", "Subject": "[PATCH v3 05/33] hw/core/fdt_generic: implement FDT machine creation\n helpers", "Date": "Thu, 2 Apr 2026 23:55:50 +0200", "Message-ID": "<20260402215629.745866-6-ruslichenko.r@gmail.com>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260402215629.745866-1-ruslichenko.r@gmail.com>", "References": "<20260402215629.745866-1-ruslichenko.r@gmail.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::634;\n envelope-from=ruslichenko.r@gmail.com; helo=mail-ej1-x634.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n 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 <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Ruslan Ruslichenko <Ruslan_Ruslichenko@epam.com>\n\nThe patch adds infrastructure to parse device tree\nand associate fdt nodes and created objects.\n\nThis will be used during instantiating machine from the\ndevices tree.\n\nSigned-off-by: Ruslan Ruslichenko <Ruslan_Ruslichenko@epam.com>\n---\n hw/core/fdt_generic.c | 71 +++++++++++++++++++++++++++++++++++\n include/hw/core/fdt_generic.h | 42 ++++++++++++++++++++-\n 2 files changed, 112 insertions(+), 1 deletion(-)", "diff": "diff --git a/hw/core/fdt_generic.c b/hw/core/fdt_generic.c\nindex 65e3c1efa3..da60de7a26 100644\n--- a/hw/core/fdt_generic.c\n+++ b/hw/core/fdt_generic.c\n@@ -29,7 +29,10 @@\n #include \"qemu/osdep.h\"\n #include \"hw/core/fdt_generic.h\"\n #include \"hw/core/qdev-properties.h\"\n+#include \"migration/vmstate.h\"\n+#include \"qemu/coroutine.h\"\n #include \"qemu/log.h\"\n+#include \"system/reset.h\"\n \n \n #define FDT_GENERIC_MAX_PATTERN_LEN 1024\n@@ -108,3 +111,71 @@ int fdt_init_inst_bind(char *node_path, FDTMachineInfo *fdti,\n {\n return fdt_init_search_table(node_path, fdti, name, &inst_bind_list_head);\n }\n+\n+void fdt_init_yield(FDTMachineInfo *fdti)\n+{\n+ static int yield_index;\n+ int this_yield = yield_index++;\n+\n+ qemu_log_mask(LOG_FDT, \"Yield #%d\\n\", this_yield);\n+ qemu_co_queue_wait(fdti->cq, NULL);\n+ qemu_log_mask(LOG_FDT, \"Unyield #%d\\n\", this_yield);\n+}\n+\n+void fdt_init_set_opaque(FDTMachineInfo *fdti, const char *node_path,\n+ void *opaque)\n+{\n+ FDTDevOpaque *dp;\n+ for (dp = fdti->dev_opaques;\n+ dp->node_path && strcmp(dp->node_path, node_path);\n+ dp++)\n+ ;\n+ if (!dp->node_path) {\n+ dp->node_path = strdup(node_path);\n+ }\n+ dp->opaque = opaque;\n+}\n+\n+int fdt_init_has_opaque(FDTMachineInfo *fdti, const char *node_path)\n+{\n+ FDTDevOpaque *dp;\n+ for (dp = fdti->dev_opaques; dp->node_path; dp++) {\n+ if (!strcmp(dp->node_path, node_path)) {\n+ return 1;\n+ }\n+ }\n+ return 0;\n+}\n+\n+void *fdt_init_get_opaque(FDTMachineInfo *fdti, const char *node_path)\n+{\n+ FDTDevOpaque *dp;\n+ for (dp = fdti->dev_opaques; dp->node_path; dp++) {\n+ if (!strcmp(dp->node_path, node_path)) {\n+ return dp->opaque;\n+ }\n+ }\n+ return NULL;\n+}\n+\n+FDTMachineInfo *fdt_init_new_fdti(void *fdt)\n+{\n+ FDTMachineInfo *fdti = g_malloc0(sizeof(*fdti));\n+ fdti->fdt = fdt;\n+ fdti->cq = g_malloc0(sizeof(*(fdti->cq)));\n+ qemu_co_queue_init(fdti->cq);\n+ fdti->dev_opaques = g_malloc0(sizeof(*(fdti->dev_opaques)) *\n+ (devtree_get_num_nodes(fdt) + 1));\n+ return fdti;\n+}\n+\n+void fdt_init_destroy_fdti(FDTMachineInfo *fdti)\n+{\n+ FDTDevOpaque *dp;\n+\n+ for (dp = fdti->dev_opaques; dp->node_path; dp++) {\n+ g_free(dp->node_path);\n+ }\n+ g_free(fdti->dev_opaques);\n+ g_free(fdti);\n+}\ndiff --git a/include/hw/core/fdt_generic.h b/include/hw/core/fdt_generic.h\nindex 3d8ec2f7ff..d204ceda43 100644\n--- a/include/hw/core/fdt_generic.h\n+++ b/include/hw/core/fdt_generic.h\n@@ -9,9 +9,33 @@\n #define FDT_GENERIC_H\n \n #include \"qemu/help-texts.h\"\n+#include \"hw/core/irq.h\"\n #include \"system/device_tree.h\"\n+#include \"qemu/coroutine.h\"\n+\n+typedef struct FDTDevOpaque {\n+ char *node_path;\n+ void *opaque;\n+} FDTDevOpaque;\n+\n+typedef struct FDTMachineInfo {\n+ /* the fdt blob */\n+ void *fdt;\n+ /* irq descriptors for top level int controller */\n+ qemu_irq *irq_base;\n+ /* per-device specific opaques */\n+ FDTDevOpaque *dev_opaques;\n+ /* recheck coroutine queue */\n+ CoQueue *cq;\n+} FDTMachineInfo;\n \n-typedef struct FDTMachineInfo FDTMachineInfo;\n+/*\n+ * create a new FDTMachineInfo. The client is responsible for setting irq_base.\n+ * Client must call fdt_init_destroy_fdti to cleanup\n+ */\n+\n+FDTMachineInfo *fdt_init_new_fdti(void *fdt);\n+void fdt_init_destroy_fdti(FDTMachineInfo *fdti);\n \n typedef int (*FDTInitFn)(char *, FDTMachineInfo *, void *);\n \n@@ -32,6 +56,22 @@ int fdt_init_compat(char *, FDTMachineInfo *, const char *);\n void add_to_inst_bind_table(FDTInitFn, const char *, void *);\n int fdt_init_inst_bind(char *, FDTMachineInfo *, const char *);\n \n+/*\n+ * Called from FDTInitFn's to inform the framework that a dependency is\n+ * unresolved and the calling context needs to wait for another device to\n+ * instantiate first. The calling thread will suspend until a change in state\n+ * in the argument fdt machine is detected.\n+ */\n+\n+void fdt_init_yield(FDTMachineInfo *);\n+\n+/* set, check and get per device opaques. Keyed by fdt node_paths */\n+\n+void fdt_init_set_opaque(FDTMachineInfo *fdti, const char *node_path,\n+ void *opaque);\n+int fdt_init_has_opaque(FDTMachineInfo *fdti, const char *node_path);\n+void *fdt_init_get_opaque(FDTMachineInfo *fdti, const char *node_path);\n+\n /* statically register a FDTInitFn as being associate with a compatibility */\n \n #define fdt_register_compatibility_opaque(function, compat, n, opaque) \\\n", "prefixes": [ "v3", "05/33" ] }