From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54413) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e1gyZ-0005Pr-Km for qemu-devel@nongnu.org; Mon, 09 Oct 2017 18:56:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e1gyY-0004ov-9o for qemu-devel@nongnu.org; Mon, 09 Oct 2017 18:56:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46632) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e1gyY-0004oS-4N for qemu-devel@nongnu.org; Mon, 09 Oct 2017 18:56:42 -0400 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Tue, 10 Oct 2017 00:55:45 +0200 Message-Id: <20171009225623.29232-5-marcandre.lureau@redhat.com> In-Reply-To: <20171009225623.29232-1-marcandre.lureau@redhat.com> References: <20171009225623.29232-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH 04/42] tpm: lookup tpm backend class in tpm_driver_find_by_type() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: amarnath.valluri@intel.com, stefanb@linux.vnet.ibm.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= One step towards removing TPMDriverOps and driver registration. Signed-off-by: Marc-Andr=C3=A9 Lureau --- tpm.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) diff --git a/tpm.c b/tpm.c index bc7d7470a8..04de8da5fd 100644 --- a/tpm.c +++ b/tpm.c @@ -47,6 +47,24 @@ void tpm_register_driver(const TPMDriverOps *tdo) be_drivers[tdo->type] =3D tdo; } =20 +static const TPMDriverOps * +tpm_driver_find_by_type(enum TpmType type) +{ + ObjectClass *oc; + TPMBackendClass *bc; + char *typename =3D g_strdup_printf("tpm-%s", TpmType_str(type)); + + oc =3D object_class_by_name(typename); + g_free(typename); + + if (!object_class_dynamic_cast(oc, TYPE_TPM_BACKEND)) { + return NULL; + } + + bc =3D TPM_BACKEND_CLASS(oc); + return bc->ops; +} + /* * Walk the list of available TPM backend drivers and display them on th= e * screen. @@ -58,11 +76,11 @@ static void tpm_display_backend_drivers(void) fprintf(stderr, "Supported TPM types (choose only one):\n"); =20 for (i =3D 0; i < TPM_TYPE__MAX; i++) { - if (be_drivers[i] =3D=3D NULL) { + const TPMDriverOps *ops =3D tpm_driver_find_by_type(i); + if (!ops) { continue; } - fprintf(stderr, "%12s %s\n", - TpmType_str(i), be_drivers[i]->desc); + fprintf(stderr, "%12s %s\n", TpmType_str(i), ops->desc); } fprintf(stderr, "\n"); } @@ -196,11 +214,6 @@ int tpm_config_parse(QemuOptsList *opts_list, const = char *optarg) =20 #endif /* CONFIG_TPM */ =20 -static const TPMDriverOps *tpm_driver_find_by_type(enum TpmType type) -{ - return be_drivers[type]; -} - /* * Walk the list of active TPM backends and collect information about th= em * following the schema description in qapi-schema.json. --=20 2.14.1.146.gd35faa819