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4b56afaf7b
Add irq_get_msi_desc() as a wrapper around a PCI function which will allocate a single cached value (see comment on struct) for the msi_desc requested if it doesn't exist yet and handle freeing it when the PCI device goes away. We take the values from the ivars of the native (FreeBSD) device. While changing struct pci_dev also add the msi_cap field requested by a wireless driver. Bump __FreeBSD_version so these changes can be detected. MFC after: 3 days X-MFC: move fields to end of struct (alloc happens in linux_pci.c) Reviewed by: hselasky (earlier version) Differential Revision: https://reviews.freebsd.org/D37523
180 lines
5.3 KiB
C
180 lines
5.3 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013-2015 Mellanox Technologies, Ltd.
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* All rights reserved.
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUXKPI_LINUX_INTERRUPT_H_
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#define _LINUXKPI_LINUX_INTERRUPT_H_
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#include <linux/cpu.h>
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#include <linux/device.h>
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#include <linux/pci.h>
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#include <linux/irqreturn.h>
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#include <linux/hardirq.h>
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#include <sys/param.h>
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#include <sys/interrupt.h>
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typedef irqreturn_t (*irq_handler_t)(int, void *);
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#define IRQF_SHARED RF_SHAREABLE
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int lkpi_request_irq(struct device *, unsigned int, irq_handler_t,
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irq_handler_t, unsigned long, const char *, void *);
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int lkpi_enable_irq(unsigned int);
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void lkpi_disable_irq(unsigned int);
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int lkpi_bind_irq_to_cpu(unsigned int, int);
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void lkpi_free_irq(unsigned int, void *);
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void lkpi_devm_free_irq(struct device *, unsigned int, void *);
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static inline int
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request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags,
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const char *name, void *arg)
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{
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return (lkpi_request_irq(NULL, irq, handler, NULL, flags, name, arg));
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}
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static inline int
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request_threaded_irq(int irq, irq_handler_t handler,
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irq_handler_t thread_handler, unsigned long flags,
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const char *name, void *arg)
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{
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return (lkpi_request_irq(NULL, irq, handler, thread_handler,
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flags, name, arg));
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}
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static inline int
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devm_request_irq(struct device *dev, int irq,
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irq_handler_t handler, unsigned long flags, const char *name, void *arg)
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{
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return (lkpi_request_irq(dev, irq, handler, NULL, flags, name, arg));
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}
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static inline int
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devm_request_threaded_irq(struct device *dev, int irq,
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irq_handler_t handler, irq_handler_t thread_handler,
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unsigned long flags, const char *name, void *arg)
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{
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return (lkpi_request_irq(dev, irq, handler, thread_handler,
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flags, name, arg));
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}
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static inline int
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enable_irq(unsigned int irq)
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{
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return (lkpi_enable_irq(irq));
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}
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static inline void
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disable_irq(unsigned int irq)
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{
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lkpi_disable_irq(irq);
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}
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static inline int
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bind_irq_to_cpu(unsigned int irq, int cpu_id)
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{
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return (lkpi_bind_irq_to_cpu(irq, cpu_id));
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}
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static inline void
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free_irq(unsigned int irq, void *device)
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{
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lkpi_free_irq(irq, device);
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}
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static inline void
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devm_free_irq(struct device *xdev, unsigned int irq, void *p)
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{
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lkpi_devm_free_irq(xdev, irq, p);
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}
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static inline int
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irq_set_affinity_hint(int vector, cpumask_t *mask)
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{
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int error;
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if (mask != NULL)
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error = intr_setaffinity(vector, CPU_WHICH_IRQ, mask);
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else
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error = intr_setaffinity(vector, CPU_WHICH_IRQ, cpuset_root);
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return (-error);
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}
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static inline struct msi_desc *
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irq_get_msi_desc(unsigned int irq)
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{
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return (lkpi_pci_msi_desc_alloc(irq));
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}
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/*
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* LinuxKPI tasklet support
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*/
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struct tasklet_struct;
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typedef void tasklet_func_t(unsigned long);
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typedef void tasklet_callback_t(struct tasklet_struct *);
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struct tasklet_struct {
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TAILQ_ENTRY(tasklet_struct) entry;
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tasklet_func_t *func;
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/* Our "state" implementation is different. Avoid same name as Linux. */
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volatile u_int tasklet_state;
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atomic_t count;
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unsigned long data;
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tasklet_callback_t *callback;
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bool use_callback;
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};
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#define DECLARE_TASKLET(_name, _func, _data) \
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struct tasklet_struct _name = { .func = (_func), .data = (_data) }
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#define tasklet_hi_schedule(t) tasklet_schedule(t)
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/* Some other compat code in the tree has this defined as well. */
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#define from_tasklet(_dev, _t, _field) \
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container_of(_t, typeof(*(_dev)), _field)
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void tasklet_setup(struct tasklet_struct *, tasklet_callback_t *);
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extern void tasklet_schedule(struct tasklet_struct *);
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extern void tasklet_kill(struct tasklet_struct *);
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extern void tasklet_init(struct tasklet_struct *, tasklet_func_t *,
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unsigned long data);
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extern void tasklet_enable(struct tasklet_struct *);
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extern void tasklet_disable(struct tasklet_struct *);
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extern void tasklet_disable_nosync(struct tasklet_struct *);
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extern int tasklet_trylock(struct tasklet_struct *);
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extern void tasklet_unlock(struct tasklet_struct *);
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extern void tasklet_unlock_wait(struct tasklet_struct *ts);
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#endif /* _LINUXKPI_LINUX_INTERRUPT_H_ */
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