156 lines
5.8 KiB
C
156 lines
5.8 KiB
C
/***********************license start***************
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* Copyright (c) 2003-2010 Cavium Inc. (support@cavium.com). All rights
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* reserved.
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*
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of Cavium Inc. nor the names of
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* its contributors may be used to endorse or promote products
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* derived from this software without specific prior written
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* permission.
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* This Software, including technical data, may be subject to U.S. export control
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* laws, including the U.S. Export Administration Act and its associated
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* regulations, and may be subject to export or import regulations in other
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* countries.
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
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* WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
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* THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
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* DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
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* SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
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* MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
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* VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
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* CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT OF USE OR
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* PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
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***********************license end**************************************/
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/**
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* @file
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*
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* Header file for the hotplug APIs
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*
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* <hr>$Revision: $<hr>
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*/
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#ifndef __CVMX_APP_HOTPLUG_H__
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#define __CVMX_APP_HOTPLUG_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef CVMX_BUILD_FOR_LINUX_KERNEL
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-bootmem.h>
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#include <asm/octeon/cvmx-spinlock.h>
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#else
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#include "cvmx.h"
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#include "cvmx-coremask.h"
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#include "cvmx-interrupt.h"
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#include "cvmx-bootmem.h"
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#include "cvmx-spinlock.h"
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#endif
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#define CVMX_APP_HOTPLUG_MAX_APPS 32
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#define CVMX_APP_HOTPLUG_MAX_APPNAME_LEN 256
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/**
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* hotplug_start is the entry point for hot plugged cores.
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* cores_added_callback is callback which in invoked when new cores are added
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* to the application. This is invoked on all the old core
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* that existed before the current set of cores were
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* added.
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* cores_removed_callback is callback which in invoked when cores are removed
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* an application. This is invoked on all the cores that
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* exist after the set of cores being requesed are
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* removed.
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* shutdown_done_callback before the application is shutdown this callback is
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* invoked on all the cores that are part of the app.
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* unplug_callback before the cores are unplugged this callback is invoked
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* only on the cores that are being unlpuuged.
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*/
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typedef struct cvmx_app_hotplug_callbacks
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{
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void (*hotplug_start)(void *ptr);
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void (*cores_added_callback) (uint32_t ,void *ptr);
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void (*cores_removed_callback) (uint32_t,void *ptr);
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void (*shutdown_callback) (void *ptr);
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void (*unplug_core_callback) (void *ptr);
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} cvmx_app_hotplug_callbacks_t;
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/* The size of this struct should be a fixed size of 1024 bytes.
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Additional members should be added towards the end of the
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strcuture by adjusting the size of padding */
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typedef struct cvmx_app_hotplug_info
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{
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char app_name[CVMX_APP_HOTPLUG_MAX_APPNAME_LEN];
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uint32_t coremask;
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uint32_t volatile hotplug_activated_coremask;
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int32_t valid;
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int32_t volatile shutdown_done;
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uint64_t shutdown_callback;
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uint64_t unplug_callback;
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uint64_t cores_added_callback;
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uint64_t cores_removed_callback;
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uint64_t hotplug_start;
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uint64_t data;
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uint32_t volatile hplugged_cores;
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uint32_t shutdown_cores;
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uint32_t app_shutdown;
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uint32_t unplug_cores;
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uint32_t padding[172];
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} cvmx_app_hotplug_info_t;
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struct cvmx_app_hotplug_global
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{
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uint32_t avail_coremask;
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cvmx_app_hotplug_info_t hotplug_info_array[CVMX_APP_HOTPLUG_MAX_APPS];
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uint32_t version;
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cvmx_spinlock_t hotplug_global_lock;
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int app_under_boot;
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int app_under_shutdown;
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};
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typedef struct cvmx_app_hotplug_global cvmx_app_hotplug_global_t;
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int is_core_being_hot_plugged(void);
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int is_app_being_booted_or_shutdown(void);
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void set_app_unber_boot(int val);
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void set_app_under_shutdown(int val);
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int cvmx_app_hotplug_shutdown_request(uint32_t, int);
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int cvmx_app_hotplug_unplug_cores(int index, uint32_t coremask, int wait);
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cvmx_app_hotplug_info_t* cvmx_app_hotplug_get_info(uint32_t);
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int cvmx_app_hotplug_get_index(uint32_t coremask);
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cvmx_app_hotplug_info_t* cvmx_app_hotplug_get_info_at_index(int index);
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int is_app_hotpluggable(int index);
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int cvmx_app_hotplug_call_add_cores_callback(int index);
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#ifndef CVMX_BUILD_FOR_LINUX_USER
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int cvmx_app_hotplug_register(void(*)(void*), void*);
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int cvmx_app_hotplug_register_cb(cvmx_app_hotplug_callbacks_t *, void*, int);
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int cvmx_app_hotplug_activate(void);
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void cvmx_app_hotplug_core_shutdown(void);
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void cvmx_app_hotplug_shutdown_disable(void);
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void cvmx_app_hotplug_shutdown_enable(void);
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#endif
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#define CVMX_APP_HOTPLUG_INFO_REGION_SIZE sizeof(cvmx_app_hotplug_global_t)
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#define CVMX_APP_HOTPLUG_INFO_REGION_NAME "cvmx-app-hotplug-block"
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CVMX_APP_HOTPLUG_H__ */
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