2005-04-16 15:20:36 -07:00
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/*
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* Executive OSM
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*
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* Copyright (C) 1999-2002 Red Hat Software
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*
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* Written by Alan Cox, Building Number Three Ltd
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* A lot of the I2O message side code from this is taken from the Red
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* Creek RCPCI45 adapter driver by Red Creek Communications
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*
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* Fixes/additions:
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* Philipp Rumpf
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* Juha Siev<EFBFBD>nen <Juha.Sievanen@cs.Helsinki.FI>
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* Auvo H<EFBFBD>kkinen <Auvo.Hakkinen@cs.Helsinki.FI>
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* Deepak Saxena <deepak@plexity.net>
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* Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
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* Alan Cox <alan@redhat.com>:
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* Ported to Linux 2.5.
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* Markus Lidel <Markus.Lidel@shadowconnect.com>:
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* Minor fixes for 2.6.
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* Markus Lidel <Markus.Lidel@shadowconnect.com>:
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* Support for sysfs included.
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*/
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#include <linux/module.h>
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#include <linux/i2o.h>
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#include <linux/delay.h>
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2005-10-30 16:03:48 -07:00
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#include <linux/workqueue.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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2006-01-06 01:19:34 -07:00
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#include <linux/sched.h> /* wait_event_interruptible_timeout() needs this */
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2005-10-30 16:03:48 -07:00
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#include <asm/param.h> /* HZ */
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2005-06-23 22:02:21 -07:00
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#include "core.h"
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2005-04-16 15:20:36 -07:00
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#define OSM_NAME "exec-osm"
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struct i2o_driver i2o_exec_driver;
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static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind);
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/* global wait list for POST WAIT */
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static LIST_HEAD(i2o_exec_wait_list);
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/* Wait struct needed for POST WAIT */
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struct i2o_exec_wait {
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wait_queue_head_t *wq; /* Pointer to Wait queue */
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struct i2o_dma dma; /* DMA buffers to free on failure */
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u32 tcntxt; /* transaction context from reply */
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int complete; /* 1 if reply received otherwise 0 */
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u32 m; /* message id */
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2005-06-23 22:02:21 -07:00
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struct i2o_message *msg; /* pointer to the reply message */
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2005-04-16 15:20:36 -07:00
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struct list_head list; /* node in global wait list */
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2006-06-10 09:54:14 -07:00
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spinlock_t lock; /* lock before modifying */
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2005-04-16 15:20:36 -07:00
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};
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2006-03-05 15:18:14 -07:00
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/* Work struct needed to handle LCT NOTIFY replies */
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struct i2o_exec_lct_notify_work {
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struct work_struct work; /* work struct */
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struct i2o_controller *c; /* controller on which the LCT NOTIFY
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was received */
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};
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2005-04-16 15:20:36 -07:00
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/* Exec OSM class handling definition */
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static struct i2o_class_id i2o_exec_class_id[] = {
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{I2O_CLASS_EXECUTIVE},
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{I2O_CLASS_END}
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};
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/**
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* i2o_exec_wait_alloc - Allocate a i2o_exec_wait struct an initialize it
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*
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* Allocate the i2o_exec_wait struct and initialize the wait.
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*
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* Returns i2o_exec_wait pointer on success or negative error code on
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* failure.
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*/
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static struct i2o_exec_wait *i2o_exec_wait_alloc(void)
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{
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struct i2o_exec_wait *wait;
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2006-01-06 01:19:33 -07:00
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wait = kzalloc(sizeof(*wait), GFP_KERNEL);
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2005-04-16 15:20:36 -07:00
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if (!wait)
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2006-01-06 01:19:30 -07:00
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return NULL;
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2005-04-16 15:20:36 -07:00
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INIT_LIST_HEAD(&wait->list);
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2006-06-10 09:54:14 -07:00
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spin_lock_init(&wait->lock);
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2005-04-16 15:20:36 -07:00
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return wait;
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};
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/**
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2006-12-06 21:38:43 -07:00
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* i2o_exec_wait_free - Free an i2o_exec_wait struct
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* @wait: I2O wait data which should be cleaned up
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2005-04-16 15:20:36 -07:00
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*/
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static void i2o_exec_wait_free(struct i2o_exec_wait *wait)
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{
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kfree(wait);
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};
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/**
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* i2o_msg_post_wait_mem - Post and wait a message with DMA buffers
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* @c: controller
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2006-12-06 21:38:43 -07:00
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* @msg: message to post
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2005-04-16 15:20:36 -07:00
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* @timeout: time in seconds to wait
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* @dma: i2o_dma struct of the DMA buffer to free on failure
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*
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* This API allows an OSM to post a message and then be told whether or
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* not the system received a successful reply. If the message times out
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* then the value '-ETIMEDOUT' is returned. This is a special case. In
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* this situation the message may (should) complete at an indefinite time
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* in the future. When it completes it will use the memory buffer
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* attached to the request. If -ETIMEDOUT is returned then the memory
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* buffer must not be freed. Instead the event completion will free them
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* for you. In all other cases the buffer are your problem.
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*
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2005-06-23 22:02:14 -07:00
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* Returns 0 on success, negative error code on timeout or positive error
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* code from reply.
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2005-04-16 15:20:36 -07:00
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*/
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2006-01-06 01:19:29 -07:00
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int i2o_msg_post_wait_mem(struct i2o_controller *c, struct i2o_message *msg,
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unsigned long timeout, struct i2o_dma *dma)
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2005-04-16 15:20:36 -07:00
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{
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2006-10-29 23:46:36 -07:00
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DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
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2005-04-16 15:20:36 -07:00
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struct i2o_exec_wait *wait;
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static u32 tcntxt = 0x80000000;
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2006-10-21 10:24:17 -07:00
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unsigned long flags;
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2005-04-16 15:20:36 -07:00
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int rc = 0;
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wait = i2o_exec_wait_alloc();
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if (!wait)
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return -ENOMEM;
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if (tcntxt == 0xffffffff)
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tcntxt = 0x80000000;
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if (dma)
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wait->dma = *dma;
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/*
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* Fill in the message initiator context and transaction context.
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* We will only use transaction contexts >= 0x80000000 for POST WAIT,
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* so we could find a POST WAIT reply easier in the reply handler.
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*/
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2006-01-06 01:19:29 -07:00
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msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
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2005-04-16 15:20:36 -07:00
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wait->tcntxt = tcntxt++;
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2006-01-06 01:19:29 -07:00
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msg->u.s.tcntxt = cpu_to_le32(wait->tcntxt);
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2005-04-16 15:20:36 -07:00
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2006-06-10 09:54:14 -07:00
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wait->wq = &wq;
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/*
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* we add elements to the head, because if a entry in the list will
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* never be removed, we have to iterate over it every time
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*/
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list_add(&wait->list, &i2o_exec_wait_list);
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2005-04-16 15:20:36 -07:00
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/*
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* Post the message to the controller. At some point later it will
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* return. If we time out before it returns then complete will be zero.
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*/
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2006-01-06 01:19:29 -07:00
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i2o_msg_post(c, msg);
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2005-04-16 15:20:36 -07:00
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2006-06-10 09:54:14 -07:00
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wait_event_interruptible_timeout(wq, wait->complete, timeout * HZ);
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2005-04-16 15:20:36 -07:00
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2006-06-10 09:54:14 -07:00
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spin_lock_irqsave(&wait->lock, flags);
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2005-04-16 15:20:36 -07:00
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2006-06-10 09:54:14 -07:00
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wait->wq = NULL;
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2005-04-16 15:20:36 -07:00
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2006-06-10 09:54:14 -07:00
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if (wait->complete)
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2005-06-23 22:02:21 -07:00
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rc = le32_to_cpu(wait->msg->body[0]) >> 24;
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2006-06-10 09:54:14 -07:00
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else {
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2005-04-16 15:20:36 -07:00
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/*
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* We cannot remove it now. This is important. When it does
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* terminate (which it must do if the controller has not
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* died...) then it will otherwise scribble on stuff.
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*
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* FIXME: try abort message
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*/
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if (dma)
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dma->virt = NULL;
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rc = -ETIMEDOUT;
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}
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2006-06-10 09:54:14 -07:00
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spin_unlock_irqrestore(&wait->lock, flags);
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if (rc != -ETIMEDOUT) {
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i2o_flush_reply(c, wait->m);
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i2o_exec_wait_free(wait);
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}
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2005-04-16 15:20:36 -07:00
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return rc;
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};
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/**
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* i2o_msg_post_wait_complete - Reply to a i2o_msg_post request from IOP
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* @c: I2O controller which answers
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* @m: message id
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* @msg: pointer to the I2O reply message
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2005-06-23 22:02:14 -07:00
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* @context: transaction context of request
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2005-04-16 15:20:36 -07:00
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*
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* This function is called in interrupt context only. If the reply reached
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* before the timeout, the i2o_exec_wait struct is filled with the message
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* and the task will be waked up. The task is now responsible for returning
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* the message m back to the controller! If the message reaches us after
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* the timeout clean up the i2o_exec_wait struct (including allocated
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* DMA buffer).
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*
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* Return 0 on success and if the message m should not be given back to the
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* I2O controller, or >0 on success and if the message should be given back
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* afterwords. Returns negative error code on failure. In this case the
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* message must also be given back to the controller.
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*/
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static int i2o_msg_post_wait_complete(struct i2o_controller *c, u32 m,
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2005-06-23 22:02:21 -07:00
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struct i2o_message *msg, u32 context)
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2005-04-16 15:20:36 -07:00
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{
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struct i2o_exec_wait *wait, *tmp;
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2005-06-23 22:02:16 -07:00
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unsigned long flags;
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2005-04-16 15:20:36 -07:00
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int rc = 1;
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/*
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* We need to search through the i2o_exec_wait_list to see if the given
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* message is still outstanding. If not, it means that the IOP took
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* longer to respond to the message than we had allowed and timer has
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* already expired. Not much we can do about that except log it for
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* debug purposes, increase timeout, and recompile.
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*/
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list_for_each_entry_safe(wait, tmp, &i2o_exec_wait_list, list) {
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if (wait->tcntxt == context) {
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2006-06-10 09:54:14 -07:00
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spin_lock_irqsave(&wait->lock, flags);
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2005-04-16 15:20:36 -07:00
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2006-06-10 09:54:14 -07:00
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list_del(&wait->list);
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2005-06-23 22:02:16 -07:00
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2005-04-16 15:20:36 -07:00
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wait->m = m;
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wait->msg = msg;
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wait->complete = 1;
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2006-06-10 09:54:14 -07:00
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if (wait->wq)
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2005-04-16 15:20:36 -07:00
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rc = 0;
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2006-06-10 09:54:14 -07:00
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else
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rc = -1;
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spin_unlock_irqrestore(&wait->lock, flags);
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if (rc) {
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2005-04-16 15:20:36 -07:00
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struct device *dev;
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dev = &c->pdev->dev;
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pr_debug("%s: timedout reply received!\n",
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c->name);
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i2o_dma_free(dev, &wait->dma);
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i2o_exec_wait_free(wait);
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2006-06-10 09:54:14 -07:00
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} else
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wake_up_interruptible(wait->wq);
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2005-04-16 15:20:36 -07:00
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return rc;
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}
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}
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2005-06-23 22:02:14 -07:00
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osm_warn("%s: Bogus reply in POST WAIT (tr-context: %08x)!\n", c->name,
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2005-04-16 15:20:36 -07:00
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context);
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return -1;
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};
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2005-06-23 22:02:16 -07:00
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/**
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* i2o_exec_show_vendor_id - Displays Vendor ID of controller
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* @d: device of which the Vendor ID should be displayed
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2006-12-06 21:38:43 -07:00
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* @attr: device_attribute to display
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2005-06-23 22:02:16 -07:00
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* @buf: buffer into which the Vendor ID should be printed
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*
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* Returns number of bytes printed into buffer.
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*/
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2006-01-06 01:19:29 -07:00
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static ssize_t i2o_exec_show_vendor_id(struct device *d,
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struct device_attribute *attr, char *buf)
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2005-06-23 22:02:16 -07:00
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|
|
|
{
|
|
|
|
|
struct i2o_device *dev = to_i2o_device(d);
|
|
|
|
|
u16 id;
|
|
|
|
|
|
2006-01-06 01:19:30 -07:00
|
|
|
|
if (!i2o_parm_field_get(dev, 0x0000, 0, &id, 2)) {
|
|
|
|
|
sprintf(buf, "0x%04x", le16_to_cpu(id));
|
2005-06-23 22:02:16 -07:00
|
|
|
|
return strlen(buf) + 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_show_product_id - Displays Product ID of controller
|
|
|
|
|
* @d: device of which the Product ID should be displayed
|
2006-12-06 21:38:43 -07:00
|
|
|
|
* @attr: device_attribute to display
|
2005-06-23 22:02:16 -07:00
|
|
|
|
* @buf: buffer into which the Product ID should be printed
|
|
|
|
|
*
|
|
|
|
|
* Returns number of bytes printed into buffer.
|
|
|
|
|
*/
|
2006-01-06 01:19:29 -07:00
|
|
|
|
static ssize_t i2o_exec_show_product_id(struct device *d,
|
|
|
|
|
struct device_attribute *attr,
|
|
|
|
|
char *buf)
|
2005-06-23 22:02:16 -07:00
|
|
|
|
{
|
|
|
|
|
struct i2o_device *dev = to_i2o_device(d);
|
|
|
|
|
u16 id;
|
|
|
|
|
|
2006-01-06 01:19:30 -07:00
|
|
|
|
if (!i2o_parm_field_get(dev, 0x0000, 1, &id, 2)) {
|
|
|
|
|
sprintf(buf, "0x%04x", le16_to_cpu(id));
|
2005-06-23 22:02:16 -07:00
|
|
|
|
return strlen(buf) + 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Exec-OSM device attributes */
|
|
|
|
|
static DEVICE_ATTR(vendor_id, S_IRUGO, i2o_exec_show_vendor_id, NULL);
|
|
|
|
|
static DEVICE_ATTR(product_id, S_IRUGO, i2o_exec_show_product_id, NULL);
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_probe - Called if a new I2O device (executive class) appears
|
|
|
|
|
* @dev: I2O device which should be probed
|
|
|
|
|
*
|
|
|
|
|
* Registers event notification for every event from Executive device. The
|
|
|
|
|
* return is always 0, because we want all devices of class Executive.
|
|
|
|
|
*
|
|
|
|
|
* Returns 0 on success.
|
|
|
|
|
*/
|
|
|
|
|
static int i2o_exec_probe(struct device *dev)
|
|
|
|
|
{
|
|
|
|
|
struct i2o_device *i2o_dev = to_i2o_device(dev);
|
2006-10-17 00:10:22 -07:00
|
|
|
|
int rc;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2006-10-17 00:10:22 -07:00
|
|
|
|
rc = i2o_event_register(i2o_dev, &i2o_exec_driver, 0, 0xffffffff);
|
|
|
|
|
if (rc) goto err_out;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2006-10-17 00:10:22 -07:00
|
|
|
|
rc = device_create_file(dev, &dev_attr_vendor_id);
|
|
|
|
|
if (rc) goto err_evtreg;
|
|
|
|
|
rc = device_create_file(dev, &dev_attr_product_id);
|
|
|
|
|
if (rc) goto err_vid;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
return 0;
|
2006-10-17 00:10:22 -07:00
|
|
|
|
|
|
|
|
|
err_vid:
|
|
|
|
|
device_remove_file(dev, &dev_attr_vendor_id);
|
|
|
|
|
err_evtreg:
|
|
|
|
|
i2o_event_register(to_i2o_device(dev), &i2o_exec_driver, 0, 0);
|
|
|
|
|
err_out:
|
|
|
|
|
return rc;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_remove - Called on I2O device removal
|
|
|
|
|
* @dev: I2O device which was removed
|
|
|
|
|
*
|
|
|
|
|
* Unregisters event notification from Executive I2O device.
|
|
|
|
|
*
|
|
|
|
|
* Returns 0 on success.
|
|
|
|
|
*/
|
|
|
|
|
static int i2o_exec_remove(struct device *dev)
|
|
|
|
|
{
|
2005-06-23 22:02:16 -07:00
|
|
|
|
device_remove_file(dev, &dev_attr_product_id);
|
|
|
|
|
device_remove_file(dev, &dev_attr_vendor_id);
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
i2o_event_register(to_i2o_device(dev), &i2o_exec_driver, 0, 0);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_lct_modified - Called on LCT NOTIFY reply
|
2006-12-06 21:38:43 -07:00
|
|
|
|
* @work: work struct for a specific controller
|
2005-04-16 15:20:36 -07:00
|
|
|
|
*
|
|
|
|
|
* This function handles asynchronus LCT NOTIFY replies. It parses the
|
|
|
|
|
* new LCT and if the buffer for the LCT was to small sends a LCT NOTIFY
|
2005-06-23 22:02:16 -07:00
|
|
|
|
* again, otherwise send LCT NOTIFY to get informed on next LCT change.
|
2005-04-16 15:20:36 -07:00
|
|
|
|
*/
|
2006-11-22 07:57:56 -07:00
|
|
|
|
static void i2o_exec_lct_modified(struct work_struct *_work)
|
2005-04-16 15:20:36 -07:00
|
|
|
|
{
|
2006-11-22 07:57:56 -07:00
|
|
|
|
struct i2o_exec_lct_notify_work *work =
|
|
|
|
|
container_of(_work, struct i2o_exec_lct_notify_work, work);
|
2005-06-23 22:02:16 -07:00
|
|
|
|
u32 change_ind = 0;
|
2006-03-05 15:18:14 -07:00
|
|
|
|
struct i2o_controller *c = work->c;
|
|
|
|
|
|
|
|
|
|
kfree(work);
|
2005-06-23 22:02:16 -07:00
|
|
|
|
|
|
|
|
|
if (i2o_device_parse_lct(c) != -EAGAIN)
|
|
|
|
|
change_ind = c->lct->change_ind + 1;
|
|
|
|
|
|
2006-01-06 01:19:30 -07:00
|
|
|
|
#ifdef CONFIG_I2O_LCT_NOTIFY_ON_CHANGES
|
2005-06-23 22:02:16 -07:00
|
|
|
|
i2o_exec_lct_notify(c, change_ind);
|
2006-01-06 01:19:30 -07:00
|
|
|
|
#endif
|
2005-04-16 15:20:36 -07:00
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_reply - I2O Executive reply handler
|
|
|
|
|
* @c: I2O controller from which the reply comes
|
|
|
|
|
* @m: message id
|
|
|
|
|
* @msg: pointer to the I2O reply message
|
|
|
|
|
*
|
|
|
|
|
* This function is always called from interrupt context. If a POST WAIT
|
|
|
|
|
* reply was received, pass it to the complete function. If a LCT NOTIFY
|
|
|
|
|
* reply was received, a new event is created to handle the update.
|
|
|
|
|
*
|
|
|
|
|
* Returns 0 on success and if the reply should not be flushed or > 0
|
|
|
|
|
* on success and if the reply should be flushed. Returns negative error
|
|
|
|
|
* code on failure and if the reply should be flushed.
|
|
|
|
|
*/
|
|
|
|
|
static int i2o_exec_reply(struct i2o_controller *c, u32 m,
|
2005-06-23 22:02:21 -07:00
|
|
|
|
struct i2o_message *msg)
|
2005-04-16 15:20:36 -07:00
|
|
|
|
{
|
2005-06-23 22:02:14 -07:00
|
|
|
|
u32 context;
|
|
|
|
|
|
2005-06-23 22:02:21 -07:00
|
|
|
|
if (le32_to_cpu(msg->u.head[0]) & MSG_FAIL) {
|
2006-01-06 01:19:29 -07:00
|
|
|
|
struct i2o_message __iomem *pmsg;
|
|
|
|
|
u32 pm;
|
|
|
|
|
|
2005-06-23 22:02:14 -07:00
|
|
|
|
/*
|
|
|
|
|
* If Fail bit is set we must take the transaction context of
|
|
|
|
|
* the preserved message to find the right request again.
|
|
|
|
|
*/
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2005-06-23 22:02:21 -07:00
|
|
|
|
pm = le32_to_cpu(msg->body[3]);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
pmsg = i2o_msg_in_to_virt(c, pm);
|
2006-01-06 01:19:29 -07:00
|
|
|
|
context = readl(&pmsg->u.s.tcntxt);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
i2o_report_status(KERN_INFO, "i2o_core", msg);
|
|
|
|
|
|
2005-06-23 22:02:14 -07:00
|
|
|
|
/* Release the preserved msg */
|
2006-01-06 01:19:29 -07:00
|
|
|
|
i2o_msg_nop_mfa(c, pm);
|
2005-06-23 22:02:14 -07:00
|
|
|
|
} else
|
2005-06-23 22:02:21 -07:00
|
|
|
|
context = le32_to_cpu(msg->u.s.tcntxt);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2005-06-23 22:02:14 -07:00
|
|
|
|
if (context & 0x80000000)
|
|
|
|
|
return i2o_msg_post_wait_complete(c, m, msg, context);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2005-06-23 22:02:21 -07:00
|
|
|
|
if ((le32_to_cpu(msg->u.head[1]) >> 24) == I2O_CMD_LCT_NOTIFY) {
|
2006-03-05 15:18:14 -07:00
|
|
|
|
struct i2o_exec_lct_notify_work *work;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
|
|
|
|
pr_debug("%s: LCT notify received\n", c->name);
|
|
|
|
|
|
|
|
|
|
work = kmalloc(sizeof(*work), GFP_ATOMIC);
|
|
|
|
|
if (!work)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
2006-03-05 15:18:14 -07:00
|
|
|
|
work->c = c;
|
|
|
|
|
|
2006-11-22 07:57:56 -07:00
|
|
|
|
INIT_WORK(&work->work, i2o_exec_lct_modified);
|
2006-03-05 15:18:14 -07:00
|
|
|
|
queue_work(i2o_exec_driver.event_queue, &work->work);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* If this happens, we want to dump the message to the syslog so
|
|
|
|
|
* it can be sent back to the card manufacturer by the end user
|
|
|
|
|
* to aid in debugging.
|
|
|
|
|
*
|
|
|
|
|
*/
|
|
|
|
|
printk(KERN_WARNING "%s: Unsolicited message reply sent to core!"
|
|
|
|
|
"Message dumped to syslog\n", c->name);
|
|
|
|
|
i2o_dump_message(msg);
|
|
|
|
|
|
|
|
|
|
return -EFAULT;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_event - Event handling function
|
2006-11-22 07:57:56 -07:00
|
|
|
|
* @work: Work item in occurring event
|
2005-04-16 15:20:36 -07:00
|
|
|
|
*
|
|
|
|
|
* Handles events send by the Executive device. At the moment does not do
|
|
|
|
|
* anything useful.
|
|
|
|
|
*/
|
2006-11-22 07:57:56 -07:00
|
|
|
|
static void i2o_exec_event(struct work_struct *work)
|
2005-04-16 15:20:36 -07:00
|
|
|
|
{
|
2006-11-22 07:57:56 -07:00
|
|
|
|
struct i2o_event *evt = container_of(work, struct i2o_event, work);
|
|
|
|
|
|
2005-06-23 22:02:21 -07:00
|
|
|
|
if (likely(evt->i2o_dev))
|
|
|
|
|
osm_debug("Event received from device: %d\n",
|
|
|
|
|
evt->i2o_dev->lct_data.tid);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
kfree(evt);
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_lct_get - Get the IOP's Logical Configuration Table
|
|
|
|
|
* @c: I2O controller from which the LCT should be fetched
|
|
|
|
|
*
|
|
|
|
|
* Send a LCT NOTIFY request to the controller, and wait
|
|
|
|
|
* I2O_TIMEOUT_LCT_GET seconds until arrival of response. If the LCT is
|
|
|
|
|
* to large, retry it.
|
|
|
|
|
*
|
|
|
|
|
* Returns 0 on success or negative error code on failure.
|
|
|
|
|
*/
|
|
|
|
|
int i2o_exec_lct_get(struct i2o_controller *c)
|
|
|
|
|
{
|
2006-01-06 01:19:29 -07:00
|
|
|
|
struct i2o_message *msg;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
int i = 0;
|
|
|
|
|
int rc = -EAGAIN;
|
|
|
|
|
|
|
|
|
|
for (i = 1; i <= I2O_LCT_GET_TRIES; i++) {
|
2006-01-06 01:19:29 -07:00
|
|
|
|
msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
|
|
|
|
|
if (IS_ERR(msg))
|
|
|
|
|
return PTR_ERR(msg);
|
|
|
|
|
|
|
|
|
|
msg->u.head[0] =
|
|
|
|
|
cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6);
|
|
|
|
|
msg->u.head[1] =
|
|
|
|
|
cpu_to_le32(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 |
|
|
|
|
|
ADAPTER_TID);
|
|
|
|
|
msg->body[0] = cpu_to_le32(0xffffffff);
|
|
|
|
|
msg->body[1] = cpu_to_le32(0x00000000);
|
|
|
|
|
msg->body[2] = cpu_to_le32(0xd0000000 | c->dlct.len);
|
|
|
|
|
msg->body[3] = cpu_to_le32(c->dlct.phys);
|
|
|
|
|
|
|
|
|
|
rc = i2o_msg_post_wait(c, msg, I2O_TIMEOUT_LCT_GET);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
if (rc < 0)
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
rc = i2o_device_parse_lct(c);
|
|
|
|
|
if (rc != -EAGAIN)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_lct_notify - Send a asynchronus LCT NOTIFY request
|
|
|
|
|
* @c: I2O controller to which the request should be send
|
|
|
|
|
* @change_ind: change indicator
|
|
|
|
|
*
|
|
|
|
|
* This function sends a LCT NOTIFY request to the I2O controller with
|
|
|
|
|
* the change indicator change_ind. If the change_ind == 0 the controller
|
|
|
|
|
* replies immediately after the request. If change_ind > 0 the reply is
|
|
|
|
|
* send after change indicator of the LCT is > change_ind.
|
|
|
|
|
*/
|
|
|
|
|
static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind)
|
|
|
|
|
{
|
|
|
|
|
i2o_status_block *sb = c->status_block.virt;
|
|
|
|
|
struct device *dev;
|
2006-01-06 01:19:29 -07:00
|
|
|
|
struct i2o_message *msg;
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2006-06-10 09:54:14 -07:00
|
|
|
|
down(&c->lct_lock);
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
dev = &c->pdev->dev;
|
|
|
|
|
|
2006-01-06 01:19:30 -07:00
|
|
|
|
if (i2o_dma_realloc
|
|
|
|
|
(dev, &c->dlct, le32_to_cpu(sb->expected_lct_size), GFP_KERNEL))
|
2005-04-16 15:20:36 -07:00
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
2006-01-06 01:19:29 -07:00
|
|
|
|
msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
|
|
|
|
|
if (IS_ERR(msg))
|
|
|
|
|
return PTR_ERR(msg);
|
|
|
|
|
|
|
|
|
|
msg->u.head[0] = cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6);
|
|
|
|
|
msg->u.head[1] = cpu_to_le32(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 |
|
|
|
|
|
ADAPTER_TID);
|
|
|
|
|
msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
|
|
|
|
|
msg->u.s.tcntxt = cpu_to_le32(0x00000000);
|
|
|
|
|
msg->body[0] = cpu_to_le32(0xffffffff);
|
|
|
|
|
msg->body[1] = cpu_to_le32(change_ind);
|
|
|
|
|
msg->body[2] = cpu_to_le32(0xd0000000 | c->dlct.len);
|
|
|
|
|
msg->body[3] = cpu_to_le32(c->dlct.phys);
|
|
|
|
|
|
|
|
|
|
i2o_msg_post(c, msg);
|
2005-04-16 15:20:36 -07:00
|
|
|
|
|
2006-06-10 09:54:14 -07:00
|
|
|
|
up(&c->lct_lock);
|
|
|
|
|
|
2005-04-16 15:20:36 -07:00
|
|
|
|
return 0;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* Exec OSM driver struct */
|
|
|
|
|
struct i2o_driver i2o_exec_driver = {
|
|
|
|
|
.name = OSM_NAME,
|
|
|
|
|
.reply = i2o_exec_reply,
|
|
|
|
|
.event = i2o_exec_event,
|
|
|
|
|
.classes = i2o_exec_class_id,
|
|
|
|
|
.driver = {
|
|
|
|
|
.probe = i2o_exec_probe,
|
|
|
|
|
.remove = i2o_exec_remove,
|
|
|
|
|
},
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_init - Registers the Exec OSM
|
|
|
|
|
*
|
|
|
|
|
* Registers the Exec OSM in the I2O core.
|
|
|
|
|
*
|
|
|
|
|
* Returns 0 on success or negative error code on failure.
|
|
|
|
|
*/
|
|
|
|
|
int __init i2o_exec_init(void)
|
|
|
|
|
{
|
|
|
|
|
return i2o_driver_register(&i2o_exec_driver);
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* i2o_exec_exit - Removes the Exec OSM
|
|
|
|
|
*
|
|
|
|
|
* Unregisters the Exec OSM from the I2O core.
|
|
|
|
|
*/
|
2006-12-13 01:33:53 -07:00
|
|
|
|
void i2o_exec_exit(void)
|
2005-04-16 15:20:36 -07:00
|
|
|
|
{
|
|
|
|
|
i2o_driver_unregister(&i2o_exec_driver);
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
EXPORT_SYMBOL(i2o_msg_post_wait_mem);
|
|
|
|
|
EXPORT_SYMBOL(i2o_exec_lct_get);
|