[Title] add api to check if hax is available

[Type] Enhancement
[Module] Hax
[Priority] Minor
[CQ#]
[Redmine#]
[Problem]
[Cause]
[Solution]

Change-Id: Ifab8570872c51547f6256ee339b9c52d5cd2b40e

diff --git a/tizen/src/Makefile.tizen b/tizen/src/Makefile.tizen
index 56c32ec..3d84b14 100755 (executable)
--- a/tizen/src/Makefile.tizen
+++ b/tizen/src/Makefile.tizen
@@ -82,6 +82,11 @@ obj-i386-$(CONFIG_WIN32) += maru_camera_win32_pci.o
 ifdef CONFIG_LINUX # libs for maru camera on linux host
 LIBS += -lv4l2 -lv4lconvert
 endif
+
+ifdef CONFIG_WIN32
+obj-i386-y += check_hax.o
+endif
+
 ifdef CONFIG_WIN32 # libs for maru camera on windows host
 LIBS += -lole32 -loleaut32 -luuid -lstrmiids
 endif

diff --git a/tizen/src/check_hax.c b/tizen/src/check_hax.c
new file mode 100755 (executable)
index 0000000..997b80c
--- /dev/null
+++ b/tizen/src/check_hax.c
@@ -0,0 +1,119 @@
+/*
+ * check if hax is available. reference:target-i386/hax-all.c
+ *
+ * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Contact:
+ * SeokYeon Hwang <syeon.hwang@samsung.com>
+ * Hyunjun Son <hj79.son@samsung.com>
+ * YeongKyoon Lee <yeongkyoon.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Contributors:
+ * - S-Core Co., Ltd
+ *
+ */
+
+#include "target-i386/hax-i386.h"
+#include "debug_ch.h"
+#include "check_hax.h"
+
+MULTI_DEBUG_CHANNEL(qemu, check_hax);
+
+/* Current version */
+static uint32_t hax_cur_version = 0x1;
+/* Least HAX kernel version */
+static uint32_t hax_lest_version = 0x1;
+
+static int hax_get_capability( struct hax_state *hax );
+static int hax_version_support( struct hax_state *hax );
+
+int check_hax( void ) {
+
+    struct hax_state hax_stat;
+    memset(&hax_stat, 0, sizeof(struct hax_state));
+
+    struct hax_state* hax = &hax_stat;
+
+    hax->fd = hax_mod_open();
+
+    int ret_fd = hax_invalid_fd( hax->fd );
+    if ( hax_invalid_fd( hax->fd ) ) {
+        ERR( "Invalid fd:%d\n", ret_fd );
+        return ret_fd;
+    } else {
+        TRACE( "Succcess hax_mod_open.\n" );
+    }
+
+    int ret_cap = hax_get_capability( hax );
+    if ( ret_cap ) {
+        ERR( "Not capable:%d\n", ret_cap );
+        return ret_cap;
+    } else {
+        TRACE( "Succcess hax_get_capability.\n" );
+    }
+
+    int ret_ver = hax_version_support( hax );
+    if ( !ret_ver ) {
+        ERR( "Incompat Hax version. Qemu current version %x ", hax_cur_version );
+        ERR( "requires least HAX version %x\n", hax_lest_version );
+        return !ret_ver;
+    } else {
+        TRACE( "Succcess hax_version_support.\n" );
+    }
+
+    return 0;
+
+}
+
+static int hax_get_capability( struct hax_state *hax ) {
+    int ret;
+    struct hax_capabilityinfo capinfo, *cap = &capinfo;
+
+    ret = hax_capability( hax, cap );
+    if ( ret )
+    return ret;
+
+    if ( ( ( cap->wstatus & HAX_CAP_WORKSTATUS_MASK ) == HAX_CAP_STATUS_NOTWORKING ) ) {
+        if ( cap->winfo & HAX_CAP_FAILREASON_VT )
+        dprint( "VTX feature is not enabled. which will cause HAX driver not working.\n" );
+        else if ( cap->winfo & HAX_CAP_FAILREASON_NX )
+        dprint( "NX feature is not enabled, which will cause HAX driver not working.\n" );
+        return -ENXIO;
+    }
+
+    if ( cap->wstatus & HAX_CAP_MEMQUOTA ) {
+        if ( cap->mem_quota < hax->mem_quota ) {
+            dprint( "The memory needed by this VM exceeds the driver limit.\n" );
+            return -ENOSPC;
+        }
+    }
+    return 0;
+}
+
+static int hax_version_support( struct hax_state *hax ) {
+    int ret;
+    struct hax_module_version version;
+
+    ret = hax_mod_version( hax, &version );
+    if ( ret < 0 )
+        return 0;
+
+    if ( ( hax_lest_version > version.cur_version ) || ( hax_cur_version < version.compat_version ) )
+        return 0;
+
+    return 1;
+}

diff --git a/tizen/src/check_hax.h b/tizen/src/check_hax.h
new file mode 100644 (file)
index 0000000..8a67bdd
--- /dev/null
+++ b/tizen/src/check_hax.h
@@ -0,0 +1,38 @@
+/*
+ * check if hax is available
+ *
+ * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. All rights reserved.
+ *
+ * Contact:
+ * SeokYeon Hwang <syeon.hwang@samsung.com>
+ * Hyunjun Son <hj79.son@samsung.com>
+ * YeongKyoon Lee <yeongkyoon.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Contributors:
+ * - S-Core Co., Ltd
+ *
+ */
+
+#ifndef CHECK_HAX_H_
+#define CHECK_HAX_H_
+
+/**
+ * @return 0:hax is available, others:error code
+ */
+int check_hax( void );
+
+#endif /* CHECK_HAX_H_ */