Import DPAA driver snapshot

Imported from Freescale Linux repository git://git.freescale.com/ppc/upstream/linux.git commit 2774c204cd8bfc56a200ff4dcdfc9cdf5b6fc161. Linux compatibility layer is partly from FreeBSD.
2025-10-16 18:33:33 +08:00 · 2016-04-27 11:58:19 +02:00
parent b2b2e1a6a5
commit 28ee86a9b0
132 changed files with 41012 additions and 3 deletions
--- a/rtemsbsd/powerpc/include/linux/kthread.h
+++ b/rtemsbsd/powerpc/include/linux/kthread.h
@@ -0,0 +1,137 @@
+/*-
+ * Copyright (c) 2010 Isilon Systems, Inc.
+ * Copyright (c) 2010 iX Systems, Inc.
+ * Copyright (c) 2010 Panasas, Inc.
+ * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+#ifndef	_LINUX_KTHREAD_H_
+#define	_LINUX_KTHREAD_H_
+
+#include <sys/param.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/kernel.h>
+#include <sys/kthread.h>
+#include <sys/sleepqueue.h>
+
+#include <machine/rtems-bsd-thread.h>
+
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/threads.h>
+
+#define	KTHREAD_LOCK(task) mtx_lock(&(task)->lock)
+#define	KTHREAD_UNLOCK(task) mtx_unlock(&(task)->lock)
+
+static inline void
+_kthread_fn(void *arg)
+{
+	struct task_struct *task;
+	struct thread *c;
+
+	task = arg;
+	task_struct_set(curthread, task);
+	c = task->task_thread;
+	sleepq_lock(c);
+	while (task->state == TASK_DORMANT)
+		sleepq_wait(c, 0);
+	sleepq_release(c);
+	if (task->should_stop == 0)
+		task->task_ret = task->task_fn(task->task_data);
+	KTHREAD_LOCK(task);
+	task->should_stop = TASK_STOPPED;
+	wakeup(task);
+	KTHREAD_UNLOCK(task);
+	kthread_exit();
+}
+
+static inline struct task_struct *
+_kthread_create(int (*threadfn)(void *data), void *data)
+{
+	struct task_struct *task;
+
+	task = kzalloc(sizeof(*task), GFP_KERNEL);
+	task->task_fn = threadfn;
+	task->task_data = data;
+	mtx_init(&task->lock, "kthread", NULL, MTX_DEF);
+
+	return (task);
+}
+
+#define	kthread_create(fn, data, fmt, ...)					\
+({									\
+	struct task_struct *_task;					\
+									\
+	_task = _kthread_create((fn), (data));				\
+	if (kthread_add(_kthread_fn, _task, NULL, &_task->task_thread,	\
+	    0, 0, fmt, ## __VA_ARGS__)) {				\
+		kfree(_task);						\
+		_task = NULL;						\
+	} else								\
+		task_struct_set(_task->task_thread, _task);		\
+	_task;								\
+})
+
+#define	kthread_should_stop()	current->should_stop
+
+static inline int
+kthread_stop(struct task_struct *task)
+{
+
+	KTHREAD_LOCK(task);
+	task->should_stop = TASK_SHOULD_STOP;
+	wake_up_process(task);
+	while (task->should_stop != TASK_STOPPED)
+		msleep(task, &task->lock, PWAIT, "kstop", hz);
+	KTHREAD_UNLOCK(task);
+	return task->task_ret;
+}
+
+static inline void
+kthread_bind(struct task_struct *task, unsigned int cpu)
+{
+	/* FIXME */
+	rtems_id task_id = rtems_bsd_get_task_id(task->task_thread);
+	rtems_id sched_id;
+	rtems_status_code sc;
+	rtems_task_priority prio;
+
+	sc = rtems_scheduler_ident(cpu, &sched_id);
+	if (sc != RTEMS_SUCCESSFUL)
+		panic("kthread_bind: scheduler ident");
+
+	sc = rtems_task_set_priority(task_id, RTEMS_CURRENT_PRIORITY, &prio);
+	if (sc != RTEMS_SUCCESSFUL)
+		panic("kthread_bind: get priority");
+
+	sc = rtems_task_set_scheduler(task_id, sched_id, prio);
+	if (sc != RTEMS_SUCCESSFUL)
+		panic("kthread_bind: set scheduler");
+}
+
+#endif	/* _LINUX_KTHREAD_H_ */