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GET /api/patches/2232238/?format=api
{ "id": 2232238, "url": "http://patchwork.ozlabs.org/api/patches/2232238/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260504025342.1452605-4-jamin_lin@aspeedtech.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260504025342.1452605-4-jamin_lin@aspeedtech.com>", "list_archive_url": null, "date": "2026-05-04T02:53:46", "name": "[v6,03/11] hw/usb/hcd-ehci: Add property to advertise 64-bit addressing capability", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "855275ca0c5b17bcc16d6eec96e6fd963ed11cc3", "submitter": { "id": 81768, "url": "http://patchwork.ozlabs.org/api/people/81768/?format=api", "name": "Jamin Lin", "email": "jamin_lin@aspeedtech.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260504025342.1452605-4-jamin_lin@aspeedtech.com/mbox/", "series": [ { "id": 502603, "url": "http://patchwork.ozlabs.org/api/series/502603/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502603", "date": "2026-05-04T02:53:55", "name": "hw/usb/ehci: Add 64-bit descriptor addressing support", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/502603/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232238/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232238/checks/", "tags": {}, "related": [], "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=aspeedtech.com header.i=@aspeedtech.com\n header.a=rsa-sha256 header.s=selector1 header.b=TtvAZ1/d;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Sun, 03 May 2026 22:53:56 -0400", "from TYPPR06MB8206.apcprd06.prod.outlook.com (2603:1096:405:383::19)\n by TYUPR06MB6098.apcprd06.prod.outlook.com (2603:1096:400:358::10)\n with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9870.25; Mon, 4 May\n 2026 02:53:46 +0000", "from TYPPR06MB8206.apcprd06.prod.outlook.com\n ([fe80::e659:1ead:77cb:f6d3]) by TYPPR06MB8206.apcprd06.prod.outlook.com\n ([fe80::e659:1ead:77cb:f6d3%2]) with mapi id 15.20.9870.023; Mon, 4 May 2026\n 02:53:46 +0000" ], "ARC-Seal": "i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none;\n b=uH9wp6TiqK5kf0b390iKrHkUR86np69Ao2CWXpP/+uq0FsKm8NLKVPrjuTeOfF82yohjCDVTTfL37w6Fmeu16EIjJv/qLvxaQx/GvsQqHnd1F9GdElRLwUYjQTj89YkPjfW6B8SGffwWzrXXwkIkn8T66WYm6n/XYy3ioP2usE6XMOybNMQBx8oN7vZvpls8+DxEV28HkXsLHmtWgmgFp3gagupTJ8zBbnVGpn+JWVn3SQKcnyCtIttrhZomgbg0PSCyjhMU5lrnEpDhxUXaySGhsDlFnbDTCfNQV7tI2w2+Q2fMREY4EIcq4Me9h2KYZwMw7xdycWF0lJZdXV8pbw==", "ARC-Message-Signature": "i=1; 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charset=\"iso-8859-1\"", "Content-Transfer-Encoding": "quoted-printable", "MIME-Version": "1.0", "X-Exchange-RoutingPolicyChecked": "\n ecB5LieDUZid/iEJOXzXyqXdKsRAURrktTG6ByksgjIKDjEBQW/VnPCH7bBWx9KcEzAYSmq81u5Oe5kseKEet7RMxc88yaGWLkafTri5wxXh+KK6jcDPIVt4QYkU5VXlHGGS+RknvhSOUNG/8L6xyZQApwoSwstRIyR5CcN4ZNZItmsc49NtOnxFOp3K9aOj2x3cctxUxBBVKGCFi1uHtZIB0fXSx1ocap57n3Zoipc6VPRxZAJcp/sGVQCJcFAMCMfitvkoomnSYQmsLVk6OT3N1OtD70vC1zkjOZ68MwmPp4oE8bMrDXUPFxFOLqgFiYUKIXv3Bmo7ahBUaqU9Iw==", "X-OriginatorOrg": "aspeedtech.com", "X-MS-Exchange-CrossTenant-AuthAs": "Internal", "X-MS-Exchange-CrossTenant-AuthSource": "TYPPR06MB8206.apcprd06.prod.outlook.com", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n fdf377a3-ce2e-4fe1-c99d-08dea9885c9a", "X-MS-Exchange-CrossTenant-originalarrivaltime": "04 May 2026 02:53:46.7430 (UTC)", "X-MS-Exchange-CrossTenant-fromentityheader": "Hosted", "X-MS-Exchange-CrossTenant-id": "43d4aa98-e35b-4575-8939-080e90d5a249", "X-MS-Exchange-CrossTenant-mailboxtype": "HOSTED", "X-MS-Exchange-CrossTenant-userprincipalname": "\n Wcx+PdSPTdfzPKKEDzh2Y5VHHdhHhCpQqXsTU+Y4GJFycMnwNyZKjK6caVWGbvtXLGr4hFztjLuQNTpMjcGYOT3h94pK6eQrSvqWZ/J4sSw=", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "TYUPR06MB6098", "Received-SPF": "pass client-ip=2a01:111:f403:c406::3;\n envelope-from=jamin_lin@aspeedtech.com;\n helo=OS8PR02CU002.outbound.protection.outlook.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, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham 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": "Introduce a new boolean property, \"caps-64bit-addr\", to control\nHCCPARAMS[0] (64-bit Addressing Capability).\n\nWhen enabled, the EHCI controller advertises support for 64-bit\naddress memory pointers as defined in the EHCI specification\n(Table 2-7, HCCPARAMS). This allows software to use the 64-bit\ndata structure formats described in Appendix B.\n\nWhen disabled (default), the controller reports 32-bit addressing\ncapability and uses the standard 32-bit data structures.\n\nThe EHCI CTRLDSSEGMENT register provides the upper 32 bits [63:32] used to\nform 64-bit addresses for EHCI control data structures. Per EHCI 1.0\nspec section 2.3.5, when the HCCPARAMS 64-bit Addressing Capability bit\nis zero, CTRLDSSEGMENT is not used: software cannot write it and reads\nmust return zero.\n\nAdd a capability check in the operational register write handler and\nreject guest writes to CTRLDSSEGMENT when 64-bit addressing is\nnot enabled.\n\nSigned-off-by: Jamin Lin <jamin_lin@aspeedtech.com>\nReviewed-by: Cédric Le Goater <clg@redhat.com>\nReviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>\n---\n hw/usb/hcd-ehci.h | 5 ++++-\n hw/usb/hcd-ehci.c | 14 +++++++++++++-\n 2 files changed, 17 insertions(+), 2 deletions(-)", "diff": "diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h\nindex 3acbddfc5c..f1f2fde578 100644\n--- a/hw/usb/hcd-ehci.h\n+++ b/hw/usb/hcd-ehci.h\n@@ -257,6 +257,7 @@ struct EHCIState {\n /* properties */\n uint32_t maxframes;\n bool migrate_fetch_addr_64bit;\n+ bool caps_64bit_addr;\n \n /*\n * EHCI spec version 1.0 Section 2.3\n@@ -313,7 +314,9 @@ struct EHCIState {\n #define DEFINE_EHCI_COMMON_PROPERTIES(_state) \\\n DEFINE_PROP_UINT32(\"maxframes\", _state, ehci.maxframes, 128), \\\n DEFINE_PROP_BOOL(\"x-migrate-fetch-addr-64bit\", _state, \\\n- ehci.migrate_fetch_addr_64bit, true)\n+ ehci.migrate_fetch_addr_64bit, true), \\\n+ DEFINE_PROP_BOOL(\"caps-64bit-addr\", _state, \\\n+ ehci.caps_64bit_addr, false)\n \n extern const VMStateDescription vmstate_ehci;\n \ndiff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c\nindex 9d74259289..7166a93fd2 100644\n--- a/hw/usb/hcd-ehci.c\n+++ b/hw/usb/hcd-ehci.c\n@@ -1109,6 +1109,15 @@ static void ehci_opreg_write(void *ptr, hwaddr addr,\n }\n break;\n \n+ case CTRLDSSEGMENT:\n+ if (!s->caps_64bit_addr) {\n+ qemu_log_mask(LOG_GUEST_ERROR,\n+ \"ehci: write to CTRLDSSEGMENT while \"\n+ \"64-bit addressing capability is disabled\\n\");\n+ return;\n+ }\n+ break;\n+\n case ASYNCLISTADDR:\n if (ehci_async_enabled(s)) {\n qemu_log_mask(LOG_GUEST_ERROR,\n@@ -2554,6 +2563,9 @@ void usb_ehci_realize(EHCIState *s, DeviceState *dev, Error **errp)\n s->maxframes);\n return;\n }\n+ if (s->caps_64bit_addr) {\n+ s->caps[0x08] |= BIT(0);\n+ }\n \n memory_region_add_subregion(&s->mem, s->capsbase, &s->mem_caps);\n memory_region_add_subregion(&s->mem, s->opregbase, &s->mem_opreg);\n@@ -2613,7 +2625,7 @@ void usb_ehci_init(EHCIState *s, DeviceState *dev)\n s->caps[0x05] = 0x00; /* No companion ports at present */\n s->caps[0x06] = 0x00;\n s->caps[0x07] = 0x00;\n- s->caps[0x08] = 0x80; /* We can cache whole frame, no 64-bit */\n+ s->caps[0x08] = 0x80; /* We can cache whole frame */\n s->caps[0x0a] = 0x00;\n s->caps[0x0b] = 0x00;\n \n", "prefixes": [ "v6", "03/11" ] }