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author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/misc/vmw_vmci/vmci_driver.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/misc/vmw_vmci/vmci_driver.c')
-rw-r--r-- | kernel/drivers/misc/vmw_vmci/vmci_driver.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/kernel/drivers/misc/vmw_vmci/vmci_driver.c b/kernel/drivers/misc/vmw_vmci/vmci_driver.c new file mode 100644 index 000000000..b823f9a6e --- /dev/null +++ b/kernel/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("1.1.3.0-k"); +MODULE_LICENSE("GPL v2"); |