{"id":2223037,"url":"http://patchwork.ozlabs.org/api/patches/2223037/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414082915.112122-2-armenon@redhat.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/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":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260414082915.112122-2-armenon@redhat.com>","list_archive_url":null,"date":"2026-04-14T08:29:06","name":"[v4,01/10] hw/tpm: Add TPM CRB chunking fields","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"13bafee08128f867e7a1de8d09f5cedf509e5aa0","submitter":{"id":91136,"url":"http://patchwork.ozlabs.org/api/people/91136/?format=json","name":"Arun Menon","email":"armenon@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260414082915.112122-2-armenon@redhat.com/mbox/","series":[{"id":499802,"url":"http://patchwork.ozlabs.org/api/series/499802/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499802","date":"2026-04-14T08:29:05","name":"hw/tpm: CRB chunking capability to handle PQC","version":4,"mbox":"http://patchwork.ozlabs.org/series/499802/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223037/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2223037/checks/","tags":{},"related":[],"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 (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=Tsh8YWOX;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=google header.b=Q2brY/xV;\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\" , =?utf-8?q?Philippe_Mathieu-Daud?=\n\t=?utf-8?q?=C3=A9?= ,\n Stefan Berger ,\n Paolo Bonzini ,\n Marcel Apfelbaum ,\n Zhao Liu , marcandre.lureau@redhat.com,\n Igor Mammedov , Laurent Vivier ,\n Fabiano Rosas , Arun Menon ,\n Stefan Berger ","Subject":"[PATCH v4 01/10] hw/tpm: Add TPM CRB chunking fields","Date":"Tue, 14 Apr 2026 13:59:06 +0530","Message-ID":"<20260414082915.112122-2-armenon@redhat.com>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260414082915.112122-1-armenon@redhat.com>","References":"<20260414082915.112122-1-armenon@redhat.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","Received-SPF":"pass client-ip=170.10.129.124; envelope-from=armenon@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com","X-Spam_score_int":"-25","X-Spam_score":"-2.6","X-Spam_bar":"--","X-Spam_report":"(-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001, 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 ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"From: Arun Menon \n\n- Add new fields to the CRB Interface Identifier and the CRB\n Control Start registers.\n- CRB_CTRL_START now has 2 new settings, that can be toggled using the\n nextChunk and crbRspRetry bits.\n- CapCRBChunk bit (10) was Reserved1 previously. The field is reused in\n this revision of the specification.\n- Refer to section 6.4.2.2 of [1]\n\n[1] https://trustedcomputinggroup.org/wp-content/uploads/PC-Client-Specific-Platform-TPM-Profile-for-TPM-2p0-v1p07_Pub.pdf\n\nSigned-off-by: Arun Menon \nReviewed-by: Stefan Berger \nReviewed-by: Marc-André Lureau \n---\n hw/tpm/tpm_crb.c | 3 +++\n include/hw/acpi/tpm.h | 5 ++++-\n 2 files changed, 7 insertions(+), 1 deletion(-)","diff":"diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c\nindex 8723536f93..0a1c7ecdc6 100644\n--- a/hw/tpm/tpm_crb.c\n+++ b/hw/tpm/tpm_crb.c\n@@ -59,6 +59,7 @@ DECLARE_INSTANCE_CHECKER(CRBState, CRB,\n #define CRB_INTF_CAP_FIFO_NOT_SUPPORTED 0b0\n #define CRB_INTF_CAP_CRB_SUPPORTED 0b1\n #define CRB_INTF_IF_SELECTOR_CRB 0b1\n+#define CRB_INTF_CAP_CRB_CHUNK 0b1\n \n #define CRB_CTRL_CMD_SIZE (TPM_CRB_ADDR_SIZE - A_CRB_DATA_BUFFER)\n \n@@ -262,6 +263,8 @@ static void tpm_crb_reset(void *dev)\n CapCRB, CRB_INTF_CAP_CRB_SUPPORTED);\n ARRAY_FIELD_DP32(s->regs, CRB_INTF_ID,\n InterfaceSelector, CRB_INTF_IF_SELECTOR_CRB);\n+ ARRAY_FIELD_DP32(s->regs, CRB_INTF_ID,\n+ CapCRBChunk, CRB_INTF_CAP_CRB_CHUNK);\n ARRAY_FIELD_DP32(s->regs, CRB_INTF_ID,\n RID, 0b0000);\n ARRAY_FIELD_DP32(s->regs, CRB_INTF_ID2,\ndiff --git a/include/hw/acpi/tpm.h b/include/hw/acpi/tpm.h\nindex d2bf6637c5..6eece21397 100644\n--- a/include/hw/acpi/tpm.h\n+++ b/include/hw/acpi/tpm.h\n@@ -149,7 +149,7 @@ REG32(CRB_INTF_ID, 0x30)\n FIELD(CRB_INTF_ID, InterfaceVersion, 4, 4)\n FIELD(CRB_INTF_ID, CapLocality, 8, 1)\n FIELD(CRB_INTF_ID, CapCRBIdleBypass, 9, 1)\n- FIELD(CRB_INTF_ID, Reserved1, 10, 1)\n+ FIELD(CRB_INTF_ID, CapCRBChunk, 10, 1)\n FIELD(CRB_INTF_ID, CapDataXferSizeSupport, 11, 2)\n FIELD(CRB_INTF_ID, CapFIFO, 13, 1)\n FIELD(CRB_INTF_ID, CapCRB, 14, 1)\n@@ -168,6 +168,9 @@ REG32(CRB_CTRL_STS, 0x44)\n FIELD(CRB_CTRL_STS, tpmIdle, 1, 1)\n REG32(CRB_CTRL_CANCEL, 0x48)\n REG32(CRB_CTRL_START, 0x4C)\n+ FIELD(CRB_CTRL_START, Start, 0, 1)\n+ FIELD(CRB_CTRL_START, crbRspRetry, 1, 1)\n+ FIELD(CRB_CTRL_START, nextChunk, 2, 1)\n REG32(CRB_INT_ENABLED, 0x50)\n REG32(CRB_INT_STS, 0x54)\n REG32(CRB_CTRL_CMD_SIZE, 0x58)\n","prefixes":["v4","01/10"]}