d6cc51cd1a
Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
36 lines
869 B
C
36 lines
869 B
C
/*
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* Thunderbolt Cactus Ridge driver - bus logic (NHI independent)
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*
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* Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
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*/
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#ifndef TB_H_
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#define TB_H_
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#include "ctl.h"
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/**
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* struct tb - main thunderbolt bus structure
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*/
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struct tb {
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struct mutex lock; /*
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* Big lock. Must be held when accessing cfg or
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* any struct tb_switch / struct tb_port.
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*/
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struct tb_nhi *nhi;
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struct tb_ctl *ctl;
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struct workqueue_struct *wq; /* ordered workqueue for plug events */
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bool hotplug_active; /*
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* tb_handle_hotplug will stop progressing plug
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* events and exit if this is not set (it needs to
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* acquire the lock one more time). Used to drain
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* wq after cfg has been paused.
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*/
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};
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struct tb *thunderbolt_alloc_and_start(struct tb_nhi *nhi);
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void thunderbolt_shutdown_and_free(struct tb *tb);
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#endif
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