{"id":2227749,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2227749/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260424080508.53992-15-jamin_lin@aspeedtech.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","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":"<20260424080508.53992-15-jamin_lin@aspeedtech.com>","date":"2026-04-24T08:05:28","name":"[v5,14/18] hw/usb/hcd-ehci: Implement 64-bit siTD descriptor addressing","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"78c2ecf1537b371d1aba8a06c62d0bdb1d63350a","submitter":{"id":81768,"url":"http://patchwork.ozlabs.org/api/1.1/people/81768/?format=json","name":"Jamin Lin","email":"jamin_lin@aspeedtech.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260424080508.53992-15-jamin_lin@aspeedtech.com/mbox/","series":[{"id":501315,"url":"http://patchwork.ozlabs.org/api/1.1/series/501315/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501315","date":"2026-04-24T08:05:08","name":"hw/usb/ehci: Add 64-bit descriptor addressing support","version":5,"mbox":"http://patchwork.ozlabs.org/series/501315/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227749/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227749/checks/","tags":{},"headers":{"Return-Path":"","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=E/3gQMUj;\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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Tsirkin\" , Laurent Vivier ,\n Nicholas Piggin ,\n Harsh Prateek Bora ,\n Ilya Leoshkevich , David Hildenbrand ,\n Cornelia Huck , Eric Farman ,\n Matthew Rosato , Halil Pasic ,\n Christian Borntraeger ,\n \"open list:ASPEED BMCs\" ,\n \"open list:All patches CC here\" ,\n \"open list:sPAPR pseries\" ,\n \"open list:S390 TCG CPUs\" ","CC":"Jamin Lin , Troy Lee ,\n \"farosas@suse.de\" , \"flwu@google.com\" ,\n \"nabihestefan@google.com\" ","Subject":"[PATCH v5 14/18] hw/usb/hcd-ehci: Implement 64-bit siTD descriptor\n addressing","Thread-Topic":"[PATCH v5 14/18] hw/usb/hcd-ehci: Implement 64-bit siTD\n descriptor addressing","Thread-Index":"AQHc08EdGjOODJrvJU6g371VfmgVgw==","Date":"Fri, 24 Apr 2026 08:05:28 +0000","Message-ID":"<20260424080508.53992-15-jamin_lin@aspeedtech.com>","References":"<20260424080508.53992-1-jamin_lin@aspeedtech.com>","In-Reply-To":"<20260424080508.53992-1-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=E/3gQMUj;\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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In that mode,\nthe CTRLDSSEGMENT register provides the upper 32 bits that are\nconcatenated with 32-bit link pointer values to form full 64-bit\ndescriptor addresses (EHCI 1.0, section 2.3.5 and Appendix B).\n\nsiTD link pointers are stored as 32-bit values and must be expanded\nto full 64-bit descriptor addresses when 64-bit mode is enabled.\nUpdate the siTD traversal path to use ehci_get_desc_addr() when\nfollowing link pointers.\n\nWhen 64-bit capability is disabled, descriptor addresses remain\n32-bit and existing behaviour is unchanged.\n\nSigned-off-by: Jamin Lin \nReviewed-by: Philippe Mathieu-Daudé \n---\n hw/usb/hcd-ehci.c | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)","diff":"diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c\nindex 43a01a796f..dfeb8ef70f 100644\n--- a/hw/usb/hcd-ehci.c\n+++ b/hw/usb/hcd-ehci.c\n@@ -1792,7 +1792,7 @@ static int ehci_state_fetchsitd(EHCIState *ehci, int async)\n warn_report(\"Skipping active siTD\");\n }\n \n- ehci_set_fetch_addr(ehci, async, sitd.next);\n+ ehci_set_fetch_addr(ehci, async, ehci_get_desc_addr(ehci, sitd.next));\n ehci_set_state(ehci, async, EST_FETCHENTRY);\n return 1;\n }\n","prefixes":["v5","14/18"]}