trusty: add trusty virtio driver

Trusty virtio driver is responsible for management an
interaction with virtio devices exposed by Trusty.
During initialization, this driver makes an smc
call to retrieve Trusty virtio device descriptor from
secure side, parses it then instantiates and configures
the specified set of virtio devices.

Change-Id: I20a23518d5c19bedd9282f7f1d4b16957ba75408
Signed-off-by: Michael Ryleev <gmar@google.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/trusty/smcall.h b/include/linux/trusty/smcall.h
index aaad5cee6..a2be2e357 100644
--- a/include/linux/trusty/smcall.h
+++ b/include/linux/trusty/smcall.h
@@ -78,4 +78,12 @@
 #define SMC_FC_AARCH_SWITCH     SMC_FASTCALL_NR (SMC_ENTITY_SECURE_MONITOR, 9)
 #define SMC_FC_GET_VERSION_STR  SMC_FASTCALL_NR (SMC_ENTITY_SECURE_MONITOR, 10)
 
+/* TRUSTED_OS entity calls */
+#define SMC_SC_VIRTIO_GET_DESCR SMC_STDCALL_NR(SMC_ENTITY_TRUSTED_OS, 20)
+#define SMC_SC_VIRTIO_START     SMC_STDCALL_NR(SMC_ENTITY_TRUSTED_OS, 21)
+#define SMC_SC_VIRTIO_STOP      SMC_STDCALL_NR(SMC_ENTITY_TRUSTED_OS, 22)
+
+#define SMC_SC_VDEV_RESET       SMC_STDCALL_NR(SMC_ENTITY_TRUSTED_OS, 23)
+#define SMC_SC_VDEV_KICK_VQ     SMC_STDCALL_NR(SMC_ENTITY_TRUSTED_OS, 24)
+
 #endif /* __LINUX_TRUSTY_SMCALL_H */