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GET /api/patches/2222994/?format=api
{ "id": 2222994, "url": "http://patchwork.ozlabs.org/api/patches/2222994/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414080025.3005916-16-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": "<20260414080025.3005916-16-jamin_lin@aspeedtech.com>", "list_archive_url": null, "date": "2026-04-14T08:00:43", "name": "[v2,15/17] hw/arm/aspeed_ast27x0: Set EHCI descriptor address offset", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "d24662979bb5e2d14e565891b7b1a38e4b2eeb54", "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/20260414080025.3005916-16-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/2222994/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222994/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=UwVOiFs0;\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=ygTh7ToBfZdOi8sGPc/aXWfB1/AxJP2jnWfeTJmsqNs=;\n b=s0Tm7fTcpatLMQi4S7PTlnEf3p76UfC9k80WChzMaw/2UrsnmBwkDbbryuX79WwV0KEOsI8rvqHNH8ZKhYvxI84iofHyqZCxMmrD94gd0TU/KSN999Ib+iWbTYtgQBoVpeciCQSwViWNMYlRPFiXHXvI98uSPKrBH6P4QXcQSxc3iCf69bgKgTy6+fCOEo3XJ6hrpIR5zzbBqa00qFjAZzdCtSxV8lTcOEzY+xamwUgAGbA4/0dGKF2UuOHvgRcjN7bNbZG6BtaFvehH0thfTxtf3OwBvnAhyetzOYp1SsvifzguuysbWMfUZY/4RC9EJB2+8IxblRcJ61lUn3x/oQ==", "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=ygTh7ToBfZdOi8sGPc/aXWfB1/AxJP2jnWfeTJmsqNs=;\n b=UwVOiFs0UaMynPf3A22p2hvT1/MsCurhLnghiASuczBVb+ywPRZm9q6CXBot+fu2EWve2B1UZWhOOxykMx9n3O3+OPHjvBaroxER1z0/ewb3WyBsrP/mOt0oAMiIkiYCIeU9b/0A7NiJrq7tYxNAvIiO2OIKrv2VK0PcHGMLMCYUJVklWqnSjnwc5c+U2spRgvqPRRn4yUjzM090ZQ846P0kPEMCZ/R4nVsybr20pawgL1nBY1TogCAlCyjkDPGWQmuwzX9T83U/oPHY6JBUcZUg9EOac80kKpge92xU8sTEJ6IaZoL47TpPx/DbMW7ELaxZIyVI1KwzKkGK5LYDgA==", "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 15/17] hw/arm/aspeed_ast27x0: Set EHCI descriptor address\n offset", "Thread-Topic": "[PATCH v2 15/17] hw/arm/aspeed_ast27x0: Set EHCI descriptor\n address offset", "Thread-Index": "AQHcy+TLbfX2KXG/5EK1P/Ap3IRTjw==", "Date": "Tue, 14 Apr 2026 08:00:43 +0000", "Message-ID": "<20260414080025.3005916-16-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=UwVOiFs0;\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 eFJoh/C1BFiD4HfzucXFGwjmf0JU3lXPLSg9QCFcMiK9zjZukbevW80i51m0/FqOrPzkFMerpA2TYkhFKX6ZDBR/VbTtD/8nYwHLUfcl22GJ7NT7vz1yUVzFfdQBOaOB+dn/T04nDDiHSHx0dLKhId2kpzhsv4bQw58FNQ1YEr6mA+Jp5Y0RevTyz2sbCff9/+4sZtwvkoZxqBzAGJDpofomkuJZ0vo1D2IcNsh4KBZhRyZ3EjOpe/tFdLiZcl5+1Lx7DMGaR1sPKb0mBQMjyIvDbvg9jI6n6ayVneunP4WxVueV5I24X9EPguaP0oNkCHlPY3WBP671sEXBGJCgpQ==", "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 2ac972ab-3ef6-44a7-87c4-08de99fbedcf", "X-MS-Exchange-CrossTenant-originalarrivaltime": "14 Apr 2026 08:00:43.8768 (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 W8iqRgEKSBPwCescAogzjh2PkqhhcCBGBD/xmDZOkOml/RYndvhiniqPU02urVo+UUIlmLy28F5cKjHq/ISIIW9UWMJYpBNBKCsVW43wJvM=", "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": "On AST2700 platforms, system DRAM is mapped above 4GB with the\nbase address at 0x400000000.\n\nThe Linux EHCI driver programs the segment register to zero when\n64-bit addressing is supported. As a result, descriptor addresses\nderived from the EHCI registers do not include the DRAM base\naddress.\n\nDescriptor memory is allocated through the DMA API with a 64-bit\nDMA mask, which allows descriptors to be placed in DRAM above 4GB.\nWhen running on AST2700, this means EHCI queue heads (QH) and queue\nelement transfer descriptors (qTD) reside at addresses starting\nfrom 0x400000000.\n\nSet the descriptor-addr-offset property to the DRAM base so the\nemulated EHCI controller can construct the correct descriptor\naddresses when accessing system memory.\n\nSigned-off-by: Jamin Lin <jamin_lin@aspeedtech.com>\n---\n hw/arm/aspeed_ast27x0.c | 3 +++\n 1 file changed, 3 insertions(+)", "diff": "diff --git a/hw/arm/aspeed_ast27x0.c b/hw/arm/aspeed_ast27x0.c\nindex 4a1f7cad73..3cdbf78ac1 100644\n--- a/hw/arm/aspeed_ast27x0.c\n+++ b/hw/arm/aspeed_ast27x0.c\n@@ -858,6 +858,9 @@ static void aspeed_soc_ast2700_realize(DeviceState *dev, Error **errp)\n for (i = 0; i < sc->ehcis_num; i++) {\n object_property_set_bool(OBJECT(&s->ehci[i]), \"caps-64bit-addr\", true,\n &error_abort);\n+ object_property_set_int(OBJECT(&s->ehci[i]), \"descriptor-addr-offset\",\n+ sc->memmap[ASPEED_DEV_SDRAM],\n+ &error_abort);\n if (!sysbus_realize(SYS_BUS_DEVICE(&s->ehci[i]), errp)) {\n return;\n }\n", "prefixes": [ "v2", "15/17" ] }