From: George Zhang <georgezhang@vmware.com>
To: linux-kernel@vger.kernel.org, georgezhang@vmware.com,
virtualization@lists.linux-foundation.org
Cc: pv-drivers@vmware.com, gregkh@linuxfoundation.org
Subject: [PATCH 04/12] VMCI: device driver implementaton.
Date: Wed, 21 Nov 2012 12:33:02 -0800 [thread overview]
Message-ID: <20121121203247.13252.40138.stgit@promb-2n-dhcp175.eng.vmware.com> (raw)
In-Reply-To: <20121121202625.13252.86346.stgit@promb-2n-dhcp175.eng.vmware.com>
VMCI driver code implementes both the host and guest personalities of the VMCI driver.
Signed-off-by: George Zhang <georgezhang@vmware.com>
Signed-off-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Andy King <acking@vmware.com>
---
drivers/misc/vmw_vmci/vmci_driver.c | 117 +++++++++++++++++++++++++++++++++++
drivers/misc/vmw_vmci/vmci_driver.h | 50 +++++++++++++++
2 files changed, 167 insertions(+), 0 deletions(-)
create mode 100644 drivers/misc/vmw_vmci/vmci_driver.c
create mode 100644 drivers/misc/vmw_vmci/vmci_driver.h
diff --git a/drivers/misc/vmw_vmci/vmci_driver.c b/drivers/misc/vmw_vmci/vmci_driver.c
new file mode 100644
index 0000000..c04c24c
--- /dev/null
+++ b/drivers/misc/vmw_vmci/vmci_driver.c
@@ -0,0 +1,117 @@
+/*
+ * VMware VMCI Driver
+ *
+ * Copyright (C) 2012 VMware, Inc. All rights reserved.
+ *
+ * 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 version 2 and no 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.
+ */
+
+#include <linux/vmw_vmci_defs.h>
+#include <linux/vmw_vmci_api.h>
+#include <linux/atomic.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include "vmci_driver.h"
+#include "vmci_event.h"
+
+static bool vmci_disable_host;
+module_param_named(disable_host, vmci_disable_host, bool, 0);
+MODULE_PARM_DESC(disable_host,
+ "Disable driver host personality (default=enabled)");
+
+static bool vmci_disable_guest;
+module_param_named(disable_guest, vmci_disable_guest, bool, 0);
+MODULE_PARM_DESC(disable_guest,
+ "Disable driver guest personality (default=enabled)");
+
+static bool vmci_guest_personality_initialized;
+static bool vmci_host_personality_initialized;
+
+/*
+ * vmci_get_context_id() - Gets the current context ID.
+ *
+ * Returns the current context ID. Note that since this is accessed only
+ * from code running in the host, this always returns the host context ID.
+ */
+u32 vmci_get_context_id(void)
+{
+ if (vmci_guest_code_active())
+ return vmci_get_vm_context_id();
+ else if (vmci_host_code_active())
+ return VMCI_HOST_CONTEXT_ID;
+
+ return VMCI_INVALID_ID;
+}
+EXPORT_SYMBOL_GPL(vmci_get_context_id);
+
+static int __init vmci_drv_init(void)
+{
+ int vmci_err;
+ int error;
+
+ vmci_err = vmci_event_init();
+ if (vmci_err < VMCI_SUCCESS) {
+ pr_err("Failed to initialize VMCIEvent (result=%d).\n",
+ vmci_err);
+ return -EINVAL;
+ }
+
+ if (!vmci_disable_guest) {
+ error = vmci_guest_init();
+ if (error) {
+ pr_warn("Failed to initialize guest personality (err=%d).\n",
+ error);
+ } else {
+ vmci_guest_personality_initialized = true;
+ pr_info("Guest personality initialized and is %s\n",
+ vmci_guest_code_active() ?
+ "active" : "inactive");
+ }
+ }
+
+ if (!vmci_disable_host) {
+ error = vmci_host_init();
+ if (error) {
+ pr_warn("Unable to initialize host personality (err=%d).\n",
+ error);
+ } else {
+ vmci_host_personality_initialized = true;
+ pr_info("Initialized host personality\n");
+ }
+ }
+
+ if (!vmci_guest_personality_initialized &&
+ !vmci_host_personality_initialized) {
+ vmci_event_exit();
+ return -ENODEV;
+ }
+
+ return 0;
+}
+module_init(vmci_drv_init);
+
+static void __exit vmci_drv_exit(void)
+{
+ if (vmci_guest_personality_initialized)
+ vmci_guest_exit();
+
+ if (vmci_host_personality_initialized)
+ vmci_host_exit();
+
+ vmci_event_exit();
+}
+module_exit(vmci_drv_exit);
+
+MODULE_AUTHOR("VMware, Inc.");
+MODULE_DESCRIPTION("VMware Virtual Machine Communication Interface.");
+MODULE_VERSION(VMCI_DRIVER_VERSION_STRING);
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/misc/vmw_vmci/vmci_driver.h b/drivers/misc/vmw_vmci/vmci_driver.h
new file mode 100644
index 0000000..f69156a
--- /dev/null
+++ b/drivers/misc/vmw_vmci/vmci_driver.h
@@ -0,0 +1,50 @@
+/*
+ * VMware VMCI Driver
+ *
+ * Copyright (C) 2012 VMware, Inc. All rights reserved.
+ *
+ * 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 version 2 and no 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.
+ */
+
+#ifndef _VMCI_DRIVER_H_
+#define _VMCI_DRIVER_H_
+
+#include <linux/vmw_vmci_defs.h>
+#include <linux/wait.h>
+
+#include "vmci_queue_pair.h"
+#include "vmci_context.h"
+
+enum vmci_obj_type {
+ VMCIOBJ_VMX_VM = 10,
+ VMCIOBJ_CONTEXT,
+ VMCIOBJ_SOCKET,
+ VMCIOBJ_NOT_SET,
+};
+
+/* For storing VMCI structures in file handles. */
+struct vmci_obj {
+ void *ptr;
+ enum vmci_obj_type type;
+};
+
+u32 vmci_get_context_id(void);
+int vmci_send_datagram(struct vmci_datagram *dg);
+
+int vmci_host_init(void);
+void vmci_host_exit(void);
+bool vmci_host_code_active(void);
+
+int vmci_guest_init(void);
+void vmci_guest_exit(void);
+bool vmci_guest_code_active(void);
+u32 vmci_get_vm_context_id(void);
+
+#endif /* _VMCI_DRIVER_H_ */
next prev parent reply other threads:[~2012-11-21 20:33 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-21 20:31 [PATCH 00/12] VMCI for Linux upstreaming George Zhang
2012-11-21 20:31 ` [PATCH 01/12] VMCI: context implementation George Zhang
2012-11-21 21:04 ` Joe Perches
2012-11-21 21:10 ` [Pv-drivers] " Andy King
2012-11-21 21:29 ` Dmitry Torokhov
2012-11-21 21:35 ` Joe Perches
2012-11-21 20:32 ` [PATCH 02/12] VMCI: datagram implementation George Zhang
2012-11-21 20:32 ` [PATCH 03/12] VMCI: doorbell implementation George Zhang
2012-11-21 20:33 ` George Zhang [this message]
2012-11-21 20:33 ` [PATCH 05/12] VMCI: event handling implementation George Zhang
2012-11-21 20:34 ` [PATCH 06/12] VMCI: handle array implementation George Zhang
2012-11-21 20:34 ` [PATCH 07/12] VMCI: queue pairs implementation George Zhang
2012-11-21 20:34 ` [PATCH 08/12] VMCI: resource object implementation George Zhang
2012-11-21 20:35 ` [PATCH 09/12] VMCI: routing implementation George Zhang
2012-11-21 20:35 ` [PATCH 10/12] VMCI: guest side driver implementation George Zhang
2012-11-21 20:35 ` [PATCH 11/12] VMCI: host " George Zhang
2012-11-21 20:36 ` [PATCH 12/12] VMCI: Some header and config files George Zhang
2012-11-26 22:37 ` [PATCH 00/12] VMCI for Linux upstreaming Greg KH
2012-11-26 23:01 ` [Pv-drivers] " Dmitry Torokhov
2012-11-26 23:23 ` Greg KH
2012-11-26 23:36 ` Dmitry Torokhov
2012-11-26 23:44 ` Greg KH
2012-11-26 23:52 ` Dmitry Torokhov
2012-11-26 23:56 ` George Zhang
2012-11-27 0:03 ` Greg KH
2012-11-27 0:27 ` Woody Suwalski
2012-11-27 0:47 ` Dmitry Torokhov
-- strict thread matches above, loose matches on Subject: below --
2013-01-08 23:52 George Zhang
2013-01-08 23:54 ` [PATCH 04/12] VMCI: device driver implementaton George Zhang
2012-11-07 18:40 [PATCH 00/12] VMCI for Linux upstreaming George Zhang
2012-11-07 18:41 ` [PATCH 04/12] VMCI: device driver implementaton George Zhang
2012-11-01 17:28 [PATCH 00/12] VMCI for Linux upstreaming George Zhang
2012-11-01 17:29 ` [PATCH 04/12] VMCI: device driver implementaton George Zhang
2012-10-30 1:03 [PATCH 00/12] VMCI for Linux upstreaming George Zhang
2012-10-30 1:04 ` [PATCH 04/12] VMCI: device driver implementaton George Zhang
2012-10-30 2:21 ` Greg KH
2012-10-30 2:23 ` Greg KH
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20121121203247.13252.40138.stgit@promb-2n-dhcp175.eng.vmware.com \
--to=georgezhang@vmware.com \
--cc=gregkh@linuxfoundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pv-drivers@vmware.com \
--cc=virtualization@lists.linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).