28db6beb42
- ehca_cq.nr_events is made an atomic_t, eliminating a lot of locking. - The CQ is removed from the CQ idr first now to make sure no more completions are scheduled on that CQ. The "wait for all completions to end" code becomes much simpler this way. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* Function definitions and structs for EQs, NEQs and interrupts
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*
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* Authors: Heiko J Schick <schickhj@de.ibm.com>
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* Khadija Souissi <souissi@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB BSD License
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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 met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __EHCA_IRQ_H
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#define __EHCA_IRQ_H
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struct ehca_shca;
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#include <linux/interrupt.h>
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#include <linux/types.h>
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int ehca_error_data(struct ehca_shca *shca, void *data, u64 resource);
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irqreturn_t ehca_interrupt_neq(int irq, void *dev_id);
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void ehca_tasklet_neq(unsigned long data);
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irqreturn_t ehca_interrupt_eq(int irq, void *dev_id);
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void ehca_tasklet_eq(unsigned long data);
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void ehca_process_eq(struct ehca_shca *shca, int is_irq);
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struct ehca_cpu_comp_task {
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wait_queue_head_t wait_queue;
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struct list_head cq_list;
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struct task_struct *task;
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spinlock_t task_lock;
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int cq_jobs;
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};
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struct ehca_comp_pool {
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struct ehca_cpu_comp_task *cpu_comp_tasks;
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int last_cpu;
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spinlock_t last_cpu_lock;
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};
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int ehca_create_comp_pool(void);
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void ehca_destroy_comp_pool(void);
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#endif
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