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GET /api/patches/2223004/?format=api
{ "id": 2223004, "url": "http://patchwork.ozlabs.org/api/patches/2223004/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414080025.3005916-11-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": "<20260414080025.3005916-11-jamin_lin@aspeedtech.com>", "list_archive_url": null, "date": "2026-04-14T08:00:38", "name": "[v2,10/17] hw/usb/hcd-ehci: Implement 64-bit qTD descriptor addressing", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "96ec54cffae83be300ce789f86c80f4e6523d07e", "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/20260414080025.3005916-11-jamin_lin@aspeedtech.com/mbox/", "series": [ { "id": 499795, "url": "http://patchwork.ozlabs.org/api/series/499795/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499795", "date": "2026-04-14T08:00:26", "name": "hw/usb/ehci: Add 64-bit descriptor addressing support", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/499795/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2223004/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2223004/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=jYZpsxi0;\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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a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;\n s=arcselector10001;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1;\n bh=SttPpTtS2xkODYGwFInJuvplfMl6KLJGD8oXhnldHOI=;\n b=FUhfwhDtYOmaDVqwB1Sqx30ML6rcyfcxWB5WDg34HD3QwGCw1/AeRlKiedSu1m3oQULPgB/0fHU1guj3zxh5a+FnbBqGJFC72akakCbHprKQNiKWePGozdJ7mUUqJZ+KMw+cENCgSvBeZJYioNZMCtYcuTPeRC4UvlqNFgJTbl7IQuvjJ486HDH9AEtS/YiKw2ct1gPQZ74c1KIt5XsrXtN8IW+stYO2BqGRQg7a0eWaxsfViJqUXd1iQvZdMd0vWCXBiUcsdJn+znebI8KsVPenX8Tu4LGW2VlFMdWnDB4C0jstKTo83nqB/wBa1dSzzCXUpatHrKNAFq2bDLQHiw==", "ARC-Authentication-Results": "i=1; mx.microsoft.com 1; spf=pass\n smtp.mailfrom=aspeedtech.com; dmarc=pass action=none\n header.from=aspeedtech.com; dkim=pass header.d=aspeedtech.com; arc=none", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=aspeedtech.com;\n s=selector1;\n h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck;\n bh=SttPpTtS2xkODYGwFInJuvplfMl6KLJGD8oXhnldHOI=;\n b=jYZpsxi0f9lc0E2scSyOKkx78zBo/UbFKTLDwTGsM0AjDQ4B2NGyBeDlG5r9AYfSF9EHUR62KVgutBSmzT2VR7eE+hIEIITWSb10AzOsuJfIlB1DcgkqkeM6YYIDau1S2re37IFezTp0CbcUgIizD4SUbs8ECtmeVO7bfVEfQCV+EK7xfCKdRuUdjDuyfNxGwWUi1wjLjG8wEMfQaY3U1dGUdGvGUdD5/zqk9/+VygM3xTmWPpCtgYdAZv88zW5FNhxwUd/QvHw8p8dY1BpdV/OnQTs01IPcikfvHXmiIIZAnqVATFTEFUoPaD/NtexN0wX5a/6wnwovXbeNudQPvg==", "From": "Jamin Lin <jamin_lin@aspeedtech.com>", "To": "=?iso-8859-1?q?C=E9dric_Le_Goater?= <clg@kaod.org>,\n Peter Maydell <peter.maydell@linaro.org>,\n Steven Lee <steven_lee@aspeedtech.com>, Troy Lee <leetroy@gmail.com>,\n Kane Chen <kane_chen@aspeedtech.com>,\n Andrew Jeffery <andrew@codeconstruct.com.au>, Joel Stanley <joel@jms.id.au>,\n \"open list:ASPEED BMCs\" <qemu-arm@nongnu.org>,\n \"open list:All patches CC here\" <qemu-devel@nongnu.org>", "CC": "Jamin Lin <jamin_lin@aspeedtech.com>, Troy Lee <troy_lee@aspeedtech.com>,\n \"flwu@google.com\" <flwu@google.com>, \"nabihestefan@google.com\"\n <nabihestefan@google.com>", "Subject": "[PATCH v2 10/17] hw/usb/hcd-ehci: Implement 64-bit qTD descriptor\n addressing", "Thread-Topic": "[PATCH v2 10/17] hw/usb/hcd-ehci: Implement 64-bit qTD\n descriptor addressing", "Thread-Index": "AQHcy+THb5qoE5nHt0KpM8UKVJWg5A==", "Date": "Tue, 14 Apr 2026 08:00:38 +0000", "Message-ID": "<20260414080025.3005916-11-jamin_lin@aspeedtech.com>", "References": "<20260414080025.3005916-1-jamin_lin@aspeedtech.com>", "In-Reply-To": "<20260414080025.3005916-1-jamin_lin@aspeedtech.com>", "Accept-Language": "zh-TW, en-US", "Content-Language": "en-US", "X-MS-Has-Attach": "", "X-MS-TNEF-Correlator": "", "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=jYZpsxi0;\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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charset=\"iso-8859-1\"", "Content-Transfer-Encoding": "quoted-printable", "MIME-Version": "1.0", "X-Exchange-RoutingPolicyChecked": "\n Rx0awyTsD2N6pii0+jPq5cCo7ZUEmEmezlNcKIOZGGFwzrTQn9wnoGRf47ex6gExmQU5TaAoL3IpqaZcIPnJlLWIjdZ+M8si86Z6bSzumQA+yPbxTQFLwrQFe1TGsh9nu/z+CpcG4pq5Wu3UixwEWEsOJJnBvoalTfIdZ99a6ta8j/EA9BMwBDodFiy/e3fb/CxFiMfHDrW9j4DZR5uXtd2q4pjhlxdIZKAKpaLMHG3bQ1JdhhIVuxLxbhp49NLyPiWLttd6P5daUepTCJ7WUEuyWUgfksZyJAkyxNwW+pJtsdYTkMmVeq4tMRpF5SXZkooQ4qLBzh+3oEbCMBzdAw==", "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 a54e93b4-2270-45ce-0cb8-08de99fbeabe", "X-MS-Exchange-CrossTenant-originalarrivaltime": "14 Apr 2026 08:00:38.1020 (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 xMKJneo8VjixtYtzFP6lQTrQ1lPzE4SN9rPMWK5ZyqR7xDxCJpsvI+SjSYz8CVC9Q0WXTi9DmQUDMbG8UgQVw3Iffj7iEfStsS2m+av9cMA=", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "SI4PR06MB8423", "Received-SPF": "pass client-ip=2a01:111:f403:c405::5;\n envelope-from=jamin_lin@aspeedtech.com;\n helo=TYPPR03CU001.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,\n SPF_HELO_PASS=-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": "EHCI supports 64-bit addressing when the 64-bit Addressing Capability\nbit in HCCPARAMS is set. In that mode, the CTRLDSSEGMENT register\nprovides the upper 32 bits that are concatenated with 32-bit link\npointer values to form 64-bit control data structure addresses\n(EHCI 1.0, section 2.3.5 and Appendix B).\n\nqTD link pointers (current_qtd/next_qtd/altnext_qtd and qTD.next)\nare stored as 32-bit values in the data structures and must be\nexpanded to full 64-bit descriptor addresses when 64-bit mode is\nenabled. Update the qTD traversal paths to use ehci_get_desc_addr()\nwhen following link pointers.\n\nAppendix B also defines high dword fields for qTD buffer pointers.\nAdd bufptr_hi[5] to EHCIqtd and extend qTD fetch and QH overlay\nhandling to load and propagate the high buffer pointer fields.\n\nWhen 64-bit capability is disabled, descriptor and buffer addresses\nremain 32-bit and existing behaviour is unchanged.\n\nSigned-off-by: Jamin Lin <jamin_lin@aspeedtech.com>\n---\n hw/usb/hcd-ehci.h | 1 +\n hw/usb/hcd-ehci.c | 19 ++++++++++++-------\n 2 files changed, 13 insertions(+), 7 deletions(-)", "diff": "diff --git a/hw/usb/hcd-ehci.h b/hw/usb/hcd-ehci.h\nindex 773f376834..712de9d50e 100644\n--- a/hw/usb/hcd-ehci.h\n+++ b/hw/usb/hcd-ehci.h\n@@ -139,6 +139,7 @@ typedef struct EHCIqtd {\n uint32_t bufptr[5]; /* Standard buffer pointer */\n #define QTD_BUFPTR_MASK 0xfffff000\n #define QTD_BUFPTR_SH 12\n+ uint32_t bufptr_hi[5];\n } EHCIqtd;\n \n /* QH overlay: altnext_qtd, token, bufptr[5], bufptr_hi[5] */\ndiff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c\nindex d1d68b0342..5d070e204f 100644\n--- a/hw/usb/hcd-ehci.c\n+++ b/hw/usb/hcd-ehci.c\n@@ -473,7 +473,8 @@ static bool ehci_verify_qtd(EHCIPacket *p, EHCIqtd *qtd)\n (p->qtd.next != qtd->next)) ||\n (!NLPTR_TBIT(p->qtd.altnext) && (p->qtd.altnext != qtd->altnext)) ||\n p->qtd.token != qtd->token ||\n- p->qtd.bufptr[0] != qtd->bufptr[0]) {\n+ p->qtd.bufptr[0] != qtd->bufptr[0] ||\n+ p->qtd.bufptr_hi[0] != qtd->bufptr_hi[0]) {\n return false;\n } else {\n return true;\n@@ -1199,6 +1200,7 @@ static int ehci_qh_do_overlay(EHCIQueue *q)\n \n for (i = 0; i < 5; i++) {\n q->qh.bufptr[i] = p->qtd.bufptr[i];\n+ q->qh.bufptr_hi[i] = p->qtd.bufptr_hi[i];\n }\n \n if (!(q->qh.epchar & QH_EPCHAR_DTC)) {\n@@ -1232,7 +1234,8 @@ static int ehci_init_transfer(EHCIPacket *p)\n return -1;\n }\n \n- page = p->qtd.bufptr[cpage] & QTD_BUFPTR_MASK;\n+ page = ehci_get_buf_addr(p->queue->ehci, p->qtd.bufptr_hi[cpage],\n+ p->qtd.bufptr[cpage], QTD_BUFPTR_MASK);\n page += offset;\n plen = bytes;\n if (plen > 4096 - offset) {\n@@ -1726,7 +1729,7 @@ static EHCIQueue *ehci_state_fetchqh(EHCIState *ehci, int async)\n } else if ((q->qh.token & QTD_TOKEN_ACTIVE) &&\n (NLPTR_TBIT(q->qh.current_qtd) == 0) &&\n (q->qh.current_qtd != 0)) {\n- q->qtdaddr = q->qh.current_qtd;\n+ q->qtdaddr = ehci_get_desc_addr(ehci, q->qh.current_qtd);\n ehci_set_state(ehci, async, EST_FETCHQTD);\n \n } else {\n@@ -1798,14 +1801,14 @@ static int ehci_state_advqueue(EHCIQueue *q)\n */\n if (((q->qh.token & QTD_TOKEN_TBYTES_MASK) != 0) &&\n (NLPTR_TBIT(q->qh.altnext_qtd) == 0)) {\n- q->qtdaddr = q->qh.altnext_qtd;\n+ q->qtdaddr = ehci_get_desc_addr(q->ehci, q->qh.altnext_qtd);\n ehci_set_state(q->ehci, q->async, EST_FETCHQTD);\n \n /*\n * next qTD is valid\n */\n } else if (NLPTR_TBIT(q->qh.next_qtd) == 0) {\n- q->qtdaddr = q->qh.next_qtd;\n+ q->qtdaddr = ehci_get_desc_addr(q->ehci, q->qh.next_qtd);\n ehci_set_state(q->ehci, q->async, EST_FETCHQTD);\n \n /*\n@@ -1834,7 +1837,9 @@ static int ehci_state_fetchqtd(EHCIQueue *q)\n if (get_dwords(q->ehci, addr + 0, &qtd.next, 1) < 0 ||\n get_dwords(q->ehci, addr + 4, &qtd.altnext, 1) < 0 ||\n get_dwords(q->ehci, addr + 12, qtd.bufptr,\n- ARRAY_SIZE(qtd.bufptr)) < 0) {\n+ ARRAY_SIZE(qtd.bufptr)) < 0 ||\n+ get_dwords(q->ehci, addr + 32, qtd.bufptr_hi,\n+ ARRAY_SIZE(qtd.bufptr_hi)) < 0) {\n return 0;\n }\n ehci_trace_qtd(q, NLPTR_GET(q->qtdaddr), &qtd);\n@@ -1915,7 +1920,7 @@ static int ehci_fill_queue(EHCIPacket *p)\n if (NLPTR_TBIT(qtd.next) != 0) {\n break;\n }\n- qtdaddr = qtd.next;\n+ qtdaddr = ehci_get_desc_addr(q->ehci, qtd.next);\n /*\n * Detect circular td lists, Windows creates these, counting on the\n * active bit going low after execution to make the queue stop.\n", "prefixes": [ "v2", "10/17" ] }