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Violators will be prosecuted for from ; Sat, 16 Dec 2017 10:42:36 -0700 From: Stefan Berger Date: Sat, 16 Dec 2017 12:41:42 -0500 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 Content-Type: text/plain; charset=UTF-8 Message-Id: <1513446109-9013-26-git-send-email-stefanb@linux.vnet.ibm.com> Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PULL v1 25/32] qdev: add DEFINE_PROP_TPMBE List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Stefan Berger From: Marc-Andr=C3=A9 Lureau A property to lookup a tpm backend. Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Stefan Berger Signed-off-by: Stefan Berger --- hw/core/qdev-properties-system.c | 64 ++++++++++++++++++++++++++++++++++= ++++++ include/hw/qdev-properties.h | 3 ++ 2 files changed, 67 insertions(+) diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-s= ystem.c index ec10da7..c173646 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -21,6 +21,7 @@ #include "net/hub.h" #include "qapi/visitor.h" #include "chardev/char-fe.h" +#include "sysemu/tpm_backend.h" #include "sysemu/iothread.h" =20 static void get_pointer(Object *obj, Visitor *v, Property *prop, @@ -236,6 +237,69 @@ const PropertyInfo qdev_prop_chr =3D { .release =3D release_chr, }; =20 +/* --- character device --- */ + +static void get_tpm(Object *obj, Visitor *v, const char *name, void *opa= que, + Error **errp) +{ + DeviceState *dev =3D DEVICE(obj); + TPMBackend **be =3D qdev_get_prop_ptr(dev, opaque); + char *p; + + p =3D g_strdup(*be ? (*be)->id : ""); + visit_type_str(v, name, &p, errp); + g_free(p); +} + +static void set_tpm(Object *obj, Visitor *v, const char *name, void *opa= que, + Error **errp) +{ + DeviceState *dev =3D DEVICE(obj); + Error *local_err =3D NULL; + Property *prop =3D opaque; + TPMBackend *s, **be =3D qdev_get_prop_ptr(dev, prop); + char *str; + + if (dev->realized) { + qdev_prop_set_after_realize(dev, name, errp); + return; + } + + visit_type_str(v, name, &str, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + s =3D qemu_find_tpm_be(str); + if (s =3D=3D NULL) { + error_setg(errp, "Property '%s.%s' can't find value '%s'", + object_get_typename(obj), prop->name, str); + } else if (tpm_backend_init(s, TPM_IF(obj), errp) =3D=3D 0) { + *be =3D s; /* weak reference, avoid cyclic ref */ + } + g_free(str); +} + +static void release_tpm(Object *obj, const char *name, void *opaque) +{ + DeviceState *dev =3D DEVICE(obj); + Property *prop =3D opaque; + TPMBackend **be =3D qdev_get_prop_ptr(dev, prop); + + if (*be) { + tpm_backend_reset(*be); + } +} + +const PropertyInfo qdev_prop_tpm =3D { + .name =3D "str", + .description =3D "ID of a tpm to use as a backend", + .get =3D get_tpm, + .set =3D set_tpm, + .release =3D release_tpm, +}; + /* --- netdev device --- */ static void get_netdev(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h index e2321f1..4d24cdf 100644 --- a/include/hw/qdev-properties.h +++ b/include/hw/qdev-properties.h @@ -17,6 +17,7 @@ extern const PropertyInfo qdev_prop_int64; extern const PropertyInfo qdev_prop_size; extern const PropertyInfo qdev_prop_string; extern const PropertyInfo qdev_prop_chr; +extern const PropertyInfo qdev_prop_tpm; extern const PropertyInfo qdev_prop_ptr; extern const PropertyInfo qdev_prop_macaddr; extern const PropertyInfo qdev_prop_on_off_auto; @@ -186,6 +187,8 @@ extern const PropertyInfo qdev_prop_link; =20 #define DEFINE_PROP_CHR(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_chr, CharBackend) +#define DEFINE_PROP_TPMBE(_n, _s, _f) \ + DEFINE_PROP(_n, _s, _f, qdev_prop_tpm, TPMBackend *) #define DEFINE_PROP_STRING(_n, _s, _f) \ DEFINE_PROP(_n, _s, _f, qdev_prop_string, char*) #define DEFINE_PROP_NETDEV(_n, _s, _f) \ --=20 2.5.5