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Violators will be prosecuted; Sat, 16 Dec 2017 10:42:00 -0700 Received: from b03ledav001.gho.boulder.ibm.com (b03ledav001.gho.boulder.ibm.com [9.17.130.232]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id vBGHg0uP5439802; Sat, 16 Dec 2017 10:42:00 -0700 Received: from b03ledav001.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 21DC86E038; Sat, 16 Dec 2017 10:42:00 -0700 (MST) Received: from sbct-3.watson.ibm.com (unknown [9.47.158.153]) by b03ledav001.gho.boulder.ibm.com (Postfix) with ESMTP id A869D6E035; Sat, 16 Dec 2017 10:41:59 -0700 (MST) From: Stefan Berger To: qemu-devel@nongnu.org Date: Sat, 16 Dec 2017 12:41:20 -0500 X-Mailer: git-send-email 2.5.5 In-Reply-To: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1513446109-9013-1-git-send-email-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 17121617-0008-0000-0000-0000090AD304 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00008213; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000244; SDB=6.00961141; UDB=6.00486146; IPR=6.00741136; BA=6.00005744; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00018575; XFM=3.00000015; UTC=2017-12-16 17:42:02 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17121617-0009-0000-0000-0000452E5653 Message-Id: <1513446109-9013-4-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-12-16_11:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1712160265 X-MIME-Autoconverted: from 8bit to quoted-printable by mx0a-001b2d01.pphosted.com id vBGHfvKv057146 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PULL v1 03/32] tpm-backend: store TPMIf interface, improve backend_init() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, Stefan Berger , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Marc-André Lureau Store the TPM interface, the actual object may be different from TPMState. Keep a reference on the interface, and check the backend wasn't already initialized. Signed-off-by: Marc-André Lureau Reviewed-by: Stefan Berger Signed-off-by: Stefan Berger --- backends/tpm.c | 11 +++++++++-- hw/tpm/tpm_emulator.c | 4 ++-- hw/tpm/tpm_passthrough.c | 4 ++-- hw/tpm/tpm_tis.c | 2 +- include/sysemu/tpm.h | 2 +- include/sysemu/tpm_backend.h | 6 +++--- 6 files changed, 18 insertions(+), 11 deletions(-) diff --git a/backends/tpm.c b/backends/tpm.c index 1e416d7..86f0e7e 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -43,9 +43,15 @@ enum TpmType tpm_backend_get_type(TPMBackend *s) return k->type; } -int tpm_backend_init(TPMBackend *s, TPMState *state) +int tpm_backend_init(TPMBackend *s, TPMIf *tpmif) { - s->tpm_state = state; + if (s->tpmif) { + return -1; + } + + s->tpmif = tpmif; + object_ref(OBJECT(tpmif)); + s->had_startup_error = false; return 0; @@ -193,6 +199,7 @@ static void tpm_backend_instance_finalize(Object *obj) { TPMBackend *s = TPM_BACKEND(obj); + object_unref(OBJECT(s->tpmif)); g_free(s->id); tpm_backend_thread_end(s); } diff --git a/hw/tpm/tpm_emulator.c b/hw/tpm/tpm_emulator.c index e1a6810..5f88975 100644 --- a/hw/tpm/tpm_emulator.c +++ b/hw/tpm/tpm_emulator.c @@ -186,7 +186,7 @@ static int tpm_emulator_set_locality(TPMEmulator *tpm_emu, uint8_t locty_number, static void tpm_emulator_handle_request(TPMBackend *tb, TPMBackendCmd *cmd) { TPMEmulator *tpm_emu = TPM_EMULATOR(tb); - TPMIfClass *tic = TPM_IF_GET_CLASS(tb->tpm_state); + TPMIfClass *tic = TPM_IF_GET_CLASS(tb->tpmif); Error *err = NULL; DPRINTF("processing TPM command"); @@ -201,7 +201,7 @@ static void tpm_emulator_handle_request(TPMBackend *tb, TPMBackendCmd *cmd) goto error; } - tic->request_completed(TPM_IF(tb->tpm_state)); + tic->request_completed(tb->tpmif); return; error: diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c index c440aff..2ad74ba 100644 --- a/hw/tpm/tpm_passthrough.c +++ b/hw/tpm/tpm_passthrough.c @@ -139,14 +139,14 @@ err_exit: static void tpm_passthrough_handle_request(TPMBackend *tb, TPMBackendCmd *cmd) { TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); - TPMIfClass *tic = TPM_IF_GET_CLASS(tb->tpm_state); + TPMIfClass *tic = TPM_IF_GET_CLASS(tb->tpmif); DPRINTF("tpm_passthrough: processing command %p\n", cmd); tpm_passthrough_unix_tx_bufs(tpm_pt, cmd->in, cmd->in_len, cmd->out, cmd->out_len, &cmd->selftest_done); - tic->request_completed(TPM_IF(tb->tpm_state)); + tic->request_completed(tb->tpmif); } static void tpm_passthrough_reset(TPMBackend *tb) diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index 880ca1a..9a2360e 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -1082,7 +1082,7 @@ static void tpm_tis_realizefn(DeviceState *dev, Error **errp) s->be_driver->fe_model = TPM_MODEL_TPM_TIS; - if (tpm_backend_init(s->be_driver, s)) { + if (tpm_backend_init(s->be_driver, TPM_IF(s))) { error_setg(errp, "tpm_tis: backend driver with id %s could not be " "initialized", s->backend); return; diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h index 452cdb9..fb1719e 100644 --- a/include/sysemu/tpm.h +++ b/include/sysemu/tpm.h @@ -12,8 +12,8 @@ #ifndef QEMU_TPM_H #define QEMU_TPM_H -#include "qemu/option.h" #include "qom/object.h" +#include "qapi-types.h" typedef struct TPMState TPMState; diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h index 03ea5a3..b5f21ed 100644 --- a/include/sysemu/tpm_backend.h +++ b/include/sysemu/tpm_backend.h @@ -43,8 +43,8 @@ struct TPMBackend { Object parent; /*< protected >*/ + TPMIf *tpmif; bool opened; - TPMState *tpm_state; GThreadPool *thread_pool; bool had_startup_error; @@ -96,14 +96,14 @@ enum TpmType tpm_backend_get_type(TPMBackend *s); /** * tpm_backend_init: * @s: the backend to initialized - * @state: TPMState + * @tpmif: TPM interface * @datacb: callback for sending data to frontend * * Initialize the backend with the given variables. * * Returns 0 on success. */ -int tpm_backend_init(TPMBackend *s, TPMState *state); +int tpm_backend_init(TPMBackend *s, TPMIf *tpmif); /** * tpm_backend_startup_tpm: