{"id":2220148,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2220148/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260406141735.25844-6-armenon@redhat.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":"<20260406141735.25844-6-armenon@redhat.com>","date":"2026-04-06T14:17:30","name":"[v3,05/10] test/qtest: Add test for tpm crb chunking","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"bd48ab0c645aff2740b107ce158bcabff94152c4","submitter":{"id":91136,"url":"http://patchwork.ozlabs.org/api/1.1/people/91136/?format=json","name":"Arun Menon","email":"armenon@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260406141735.25844-6-armenon@redhat.com/mbox/","series":[{"id":498860,"url":"http://patchwork.ozlabs.org/api/1.1/series/498860/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=498860","date":"2026-04-06T14:17:28","name":"hw/tpm: CRB chunking capability to handle PQC","version":3,"mbox":"http://patchwork.ozlabs.org/series/498860/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2220148/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220148/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 (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=D1s/ZwTT;\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=UT/ky7Hl;\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\" ,\n Yanan Wang , Igor Mammedov ,\n\t=?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= ,\n Arun Menon ","Subject":"[PATCH v3 05/10] test/qtest: Add test for tpm crb chunking","Date":"Mon, 6 Apr 2026 19:47:30 +0530","Message-ID":"<20260406141735.25844-6-armenon@redhat.com>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260406141735.25844-1-armenon@redhat.com>","References":"<20260406141735.25844-1-armenon@redhat.com>","MIME-Version":"1.0","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- New test case added to the swtpm test. Data is written and read from\n the buffer in chunks.\n- The chunk size is dynamically calculated by reading the\n CRB_CTRL_CMD_SIZE address. This can be changed manually to test.\n- Add a helper function tpm_wait_till_bit_clear()\n\nSigned-off-by: Arun Menon \n---\n tests/qtest/tpm-crb-swtpm-test.c | 10 +++\n tests/qtest/tpm-util.c | 108 ++++++++++++++++++++++++++-----\n tests/qtest/tpm-util.h | 5 ++\n 3 files changed, 108 insertions(+), 15 deletions(-)","diff":"diff --git a/tests/qtest/tpm-crb-swtpm-test.c b/tests/qtest/tpm-crb-swtpm-test.c\nindex ffeb1c396b..050c7b0c1f 100644\n--- a/tests/qtest/tpm-crb-swtpm-test.c\n+++ b/tests/qtest/tpm-crb-swtpm-test.c\n@@ -33,6 +33,14 @@ static void tpm_crb_swtpm_test(const void *data)\n \"tpm-crb\", NULL);\n }\n \n+static void tpm_crb_chunk_swtpm_test(const void *data)\n+{\n+ const TestState *ts = data;\n+\n+ tpm_test_swtpm_test(ts->src_tpm_path, tpm_util_crb_chunk_transfer,\n+ \"tpm-crb\", NULL);\n+}\n+\n static void tpm_crb_swtpm_migration_test(const void *data)\n {\n const TestState *ts = data;\n@@ -54,6 +62,8 @@ int main(int argc, char **argv)\n g_test_init(&argc, &argv, NULL);\n \n qtest_add_data_func(\"/tpm/crb-swtpm/test\", &ts, tpm_crb_swtpm_test);\n+ qtest_add_data_func(\"/tpm/crb-chunk-swtpm/test\", &ts,\n+ tpm_crb_chunk_swtpm_test);\n qtest_add_data_func(\"/tpm/crb-swtpm-migration/test\", &ts,\n tpm_crb_swtpm_migration_test);\n ret = g_test_run();\ndiff --git a/tests/qtest/tpm-util.c b/tests/qtest/tpm-util.c\nindex 2cb2dd4796..603c5a825d 100644\n--- a/tests/qtest/tpm-util.c\n+++ b/tests/qtest/tpm-util.c\n@@ -14,16 +14,44 @@\n \n #include \"qemu/osdep.h\"\n #include \n+#include \"qemu/bswap.h\"\n \n #include \"hw/acpi/tpm.h\"\n #include \"libqtest.h\"\n #include \"tpm-util.h\"\n #include \"qobject/qdict.h\"\n \n+#define CRB_ADDR_START (TPM_CRB_ADDR_BASE + A_CRB_CTRL_START)\n+#define CRB_ADDR_CTRL_STS (TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS)\n+#define CRB_ADDR_CTRL_CMD_SIZE \\\n+ (TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE)\n+\n+#define CRB_START_INVOKE (1 << 0)\n+#define CRB_START_RSP_RETRY (1 << 1)\n+#define CRB_START_NEXT_CHUNK (1 << 2)\n+\n+void tpm_wait_till_bit_clear(QTestState *s, uint64_t addr, uint32_t mask)\n+{\n+ uint32_t sts;\n+ uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;\n+\n+ while (true) {\n+ sts = qtest_readl(s, addr);\n+ if ((sts & mask) == 0) {\n+ break;\n+ }\n+ if (g_get_monotonic_time() >= end_time) {\n+ g_assert_cmphex(sts & mask, ==, 0);\n+ break;\n+ }\n+ }\n+}\n+\n void tpm_util_crb_transfer(QTestState *s,\n const unsigned char *req, size_t req_size,\n unsigned char *rsp, size_t rsp_size)\n {\n+ uint32_t tpm_sts;\n uint64_t caddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);\n uint64_t raddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);\n \n@@ -31,24 +59,74 @@ void tpm_util_crb_transfer(QTestState *s,\n \n qtest_memwrite(s, caddr, req, req_size);\n \n- uint32_t sts, start = 1;\n- uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;\n- qtest_writel(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);\n- while (true) {\n- start = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);\n- if ((start & 1) == 0) {\n- break;\n+ qtest_writel(s, CRB_ADDR_START, CRB_START_INVOKE);\n+ tpm_wait_till_bit_clear(s, CRB_ADDR_START, CRB_START_INVOKE);\n+\n+ tpm_sts = qtest_readl(s, CRB_ADDR_CTRL_STS);\n+ g_assert_cmpint(tpm_sts & 1, ==, 0);\n+\n+ qtest_memread(s, raddr, rsp, rsp_size);\n+}\n+\n+void tpm_util_crb_chunk_transfer(QTestState *s,\n+ const unsigned char *req, size_t req_size,\n+ unsigned char *rsp, size_t rsp_size)\n+{\n+ uint32_t tpm_sts;\n+\n+ uint64_t caddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);\n+ uint64_t raddr = qtest_readq(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);\n+ uint32_t crb_ctrl_cmd_size = qtest_readl(s, CRB_ADDR_CTRL_CMD_SIZE);\n+\n+ size_t chunk_size = crb_ctrl_cmd_size;\n+\n+ qtest_writeb(s, TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);\n+\n+ for (size_t i = 0 ; i < req_size; i += chunk_size) {\n+ bool last_chunk = false;\n+ size_t current_chunk_size = chunk_size;\n+\n+ if (i + chunk_size > req_size) {\n+ last_chunk = true;\n+ current_chunk_size = req_size - i;\n }\n- if (g_get_monotonic_time() >= end_time) {\n- break;\n+\n+ qtest_memwrite(s, caddr, req + i, current_chunk_size);\n+\n+ if (last_chunk) {\n+ qtest_writel(s, CRB_ADDR_START, CRB_START_INVOKE);\n+ tpm_wait_till_bit_clear(s, CRB_ADDR_START, CRB_START_INVOKE);\n+ } else {\n+ qtest_writel(s, CRB_ADDR_START , CRB_START_NEXT_CHUNK);\n+ tpm_wait_till_bit_clear(s, CRB_ADDR_START, CRB_START_NEXT_CHUNK);\n }\n- };\n- start = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);\n- g_assert_cmpint(start & 1, ==, 0);\n- sts = qtest_readl(s, TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);\n- g_assert_cmpint(sts & 1, ==, 0);\n+ }\n+ tpm_sts = qtest_readl(s, CRB_ADDR_CTRL_STS);\n+ g_assert_cmpint(tpm_sts & 1, ==, 0);\n \n- qtest_memread(s, raddr, rsp, rsp_size);\n+ /*\n+ * Read response in chunks\n+ */\n+\n+ unsigned char header[10];\n+ qtest_memread(s, raddr, header, sizeof(header));\n+\n+ uint32_t actual_response_size = ldl_be_p(&header[2]);\n+\n+ if (actual_response_size > rsp_size) {\n+ actual_response_size = rsp_size;\n+ }\n+\n+ for (size_t i = 0; i < actual_response_size; i += chunk_size) {\n+ size_t to_read = i + chunk_size > actual_response_size\n+ ? actual_response_size - i\n+ : chunk_size;\n+ if (i > 0) {\n+ qtest_writel(s, CRB_ADDR_START, CRB_START_NEXT_CHUNK);\n+ tpm_wait_till_bit_clear(s, CRB_ADDR_START, CRB_START_NEXT_CHUNK);\n+ }\n+ qtest_memread(s, raddr, rsp + i, to_read);\n+ }\n }\n \n void tpm_util_startup(QTestState *s, tx_func *tx)\ndiff --git a/tests/qtest/tpm-util.h b/tests/qtest/tpm-util.h\nindex 0cb28dd6e5..681544e7d8 100644\n--- a/tests/qtest/tpm-util.h\n+++ b/tests/qtest/tpm-util.h\n@@ -24,10 +24,15 @@ typedef void (tx_func)(QTestState *s,\n const unsigned char *req, size_t req_size,\n unsigned char *rsp, size_t rsp_size);\n \n+void tpm_wait_till_bit_clear(QTestState *s, uint64_t addr, uint32_t mask);\n void tpm_util_crb_transfer(QTestState *s,\n const unsigned char *req, size_t req_size,\n unsigned char *rsp, size_t rsp_size);\n \n+void tpm_util_crb_chunk_transfer(QTestState *s,\n+ const unsigned char *req, size_t req_size,\n+ unsigned char *rsp, size_t rsp_size);\n+\n void tpm_util_startup(QTestState *s, tx_func *tx);\n void tpm_util_pcrextend(QTestState *s, tx_func *tx);\n void tpm_util_pcrread(QTestState *s, tx_func *tx,\n","prefixes":["v3","05/10"]}