patch-2.4.13 linux/drivers/i2o/i2o_core.c
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- Lines: 3565
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.4.12/linux/drivers/i2o/i2o_core.c
- Orig date:
Mon Aug 27 12:41:41 2001
diff -u --recursive --new-file v2.4.12/linux/drivers/i2o/i2o_core.c linux/drivers/i2o/i2o_core.c
@@ -1,3564 +0,0 @@
-/*
- * Core I2O structure management
- *
- * (C) Copyright 1999 Red Hat Software
- *
- * Written by Alan Cox, Building Number Three Ltd
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * A lot of the I2O message side code from this is taken from the
- * Red Creek RCPCI45 adapter driver by Red Creek Communications
- *
- * Fixes by:
- * Philipp Rumpf
- * Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
- * Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
- * Deepak Saxena <deepak@plexity.net>
- * Boji T Kannanthanam <boji.t.kannanthanam@intel.com>
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-
-#include <linux/i2o.h>
-
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
-
-#include <linux/bitops.h>
-#include <linux/wait.h>
-#include <linux/delay.h>
-#include <linux/timer.h>
-#include <linux/tqueue.h>
-#include <linux/interrupt.h>
-#include <linux/sched.h>
-#include <asm/semaphore.h>
-#include <linux/completion.h>
-
-#include <asm/io.h>
-#include <linux/reboot.h>
-
-#include "i2o_lan.h"
-
-//#define DRIVERDEBUG
-
-#ifdef DRIVERDEBUG
-#define dprintk(s, args...) printk(s, ## args)
-#else
-#define dprintk(s, args...)
-#endif
-
-/* OSM table */
-static struct i2o_handler *i2o_handlers[MAX_I2O_MODULES];
-
-/* Controller list */
-static struct i2o_controller *i2o_controllers[MAX_I2O_CONTROLLERS];
-struct i2o_controller *i2o_controller_chain;
-int i2o_num_controllers;
-
-/* Initiator Context for Core message */
-static int core_context;
-
-/* Initialization && shutdown functions */
-static void i2o_sys_init(void);
-static void i2o_sys_shutdown(void);
-static int i2o_reset_controller(struct i2o_controller *);
-static int i2o_reboot_event(struct notifier_block *, unsigned long , void *);
-static int i2o_online_controller(struct i2o_controller *);
-static int i2o_init_outbound_q(struct i2o_controller *);
-static int i2o_post_outbound_messages(struct i2o_controller *);
-
-/* Reply handler */
-static void i2o_core_reply(struct i2o_handler *, struct i2o_controller *,
- struct i2o_message *);
-
-/* Various helper functions */
-static int i2o_lct_get(struct i2o_controller *);
-static int i2o_lct_notify(struct i2o_controller *);
-static int i2o_hrt_get(struct i2o_controller *);
-
-static int i2o_build_sys_table(void);
-static int i2o_systab_send(struct i2o_controller *c);
-
-/* I2O core event handler */
-static int i2o_core_evt(void *);
-static int evt_pid;
-static int evt_running;
-
-/* Dynamic LCT update handler */
-static int i2o_dyn_lct(void *);
-
-void i2o_report_controller_unit(struct i2o_controller *, struct i2o_device *);
-
-/*
- * I2O System Table. Contains information about
- * all the IOPs in the system. Used to inform IOPs
- * about each other's existence.
- *
- * sys_tbl_ver is the CurrentChangeIndicator that is
- * used by IOPs to track changes.
- */
-static struct i2o_sys_tbl *sys_tbl;
-static int sys_tbl_ind;
-static int sys_tbl_len;
-
-/*
- * This spin lock is used to keep a device from being
- * added and deleted concurrently across CPUs or interrupts.
- * This can occur when a user creates a device and immediatelly
- * deletes it before the new_dev_notify() handler is called.
- */
-static spinlock_t i2o_dev_lock = SPIN_LOCK_UNLOCKED;
-
-#ifdef MODULE
-/*
- * Function table to send to bus specific layers
- * See <include/linux/i2o.h> for explanation of this
- */
-static struct i2o_core_func_table i2o_core_functions =
-{
- i2o_install_controller,
- i2o_activate_controller,
- i2o_find_controller,
- i2o_unlock_controller,
- i2o_run_queue,
- i2o_delete_controller
-};
-
-#ifdef CONFIG_I2O_PCI_MODULE
-extern int i2o_pci_core_attach(struct i2o_core_func_table *);
-extern void i2o_pci_core_detach(void);
-#endif /* CONFIG_I2O_PCI_MODULE */
-
-#endif /* MODULE */
-
-/*
- * Structures and definitions for synchronous message posting.
- * See i2o_post_wait() for description.
- */
-struct i2o_post_wait_data
-{
- int *status; /* Pointer to status block on caller stack */
- int *complete; /* Pointer to completion flag on caller stack */
- u32 id; /* Unique identifier */
- wait_queue_head_t *wq; /* Wake up for caller (NULL for dead) */
- struct i2o_post_wait_data *next; /* Chain */
- void *mem[2]; /* Memory blocks to recover on failure path */
-};
-static struct i2o_post_wait_data *post_wait_queue;
-static u32 post_wait_id; // Unique ID for each post_wait
-static spinlock_t post_wait_lock = SPIN_LOCK_UNLOCKED;
-static void i2o_post_wait_complete(u32, int);
-
-/* OSM descriptor handler */
-static struct i2o_handler i2o_core_handler =
-{
- (void *)i2o_core_reply,
- NULL,
- NULL,
- NULL,
- "I2O core layer",
- 0,
- I2O_CLASS_EXECUTIVE
-};
-
-/*
- * Used when queueing a reply to be handled later
- */
-
-struct reply_info
-{
- struct i2o_controller *iop;
- u32 msg[MSG_FRAME_SIZE];
-};
-static struct reply_info evt_reply;
-static struct reply_info events[I2O_EVT_Q_LEN];
-static int evt_in;
-static int evt_out;
-static int evt_q_len;
-#define MODINC(x,y) ((x) = ((x) + 1) % (y))
-
-/*
- * I2O configuration spinlock. This isnt a big deal for contention
- * so we have one only
- */
-
-static DECLARE_MUTEX(i2o_configuration_lock);
-
-/*
- * Event spinlock. Used to keep event queue sane and from
- * handling multiple events simultaneously.
- */
-static spinlock_t i2o_evt_lock = SPIN_LOCK_UNLOCKED;
-
-/*
- * Semaphore used to synchronize event handling thread with
- * interrupt handler.
- */
-
-static DECLARE_MUTEX(evt_sem);
-static DECLARE_COMPLETION(evt_dead);
-DECLARE_WAIT_QUEUE_HEAD(evt_wait);
-
-static struct notifier_block i2o_reboot_notifier =
-{
- i2o_reboot_event,
- NULL,
- 0
-};
-
-/*
- * Config options
- */
-
-static int verbose;
-MODULE_PARM(verbose, "i");
-
-/*
- * I2O Core reply handler
- */
-static void i2o_core_reply(struct i2o_handler *h, struct i2o_controller *c,
- struct i2o_message *m)
-{
- u32 *msg=(u32 *)m;
- u32 status;
- u32 context = msg[2];
-
- if (msg[0] & MSG_FAIL) // Fail bit is set
- {
- u32 *preserved_msg = (u32*)(c->mem_offset + msg[7]);
-
- i2o_report_status(KERN_INFO, "i2o_core", msg);
- i2o_dump_message(preserved_msg);
-
- /* If the failed request needs special treatment,
- * it should be done here. */
-
- /* Release the preserved msg by resubmitting it as a NOP */
-
- preserved_msg[0] = THREE_WORD_MSG_SIZE | SGL_OFFSET_0;
- preserved_msg[1] = I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0;
- preserved_msg[2] = 0;
- i2o_post_message(c, msg[7]);
-
- /* If reply to i2o_post_wait failed, return causes a timeout */
-
- return;
- }
-
-#ifdef DRIVERDEBUG
- i2o_report_status(KERN_INFO, "i2o_core", msg);
-#endif
-
- if(msg[2]&0x80000000) // Post wait message
- {
- if (msg[4] >> 24)
- status = (msg[4] & 0xFFFF);
- else
- status = I2O_POST_WAIT_OK;
-
- i2o_post_wait_complete(context, status);
- return;
- }
-
- if(m->function == I2O_CMD_UTIL_EVT_REGISTER)
- {
- memcpy(events[evt_in].msg, msg, (msg[0]>>16)<<2);
- events[evt_in].iop = c;
-
- spin_lock(&i2o_evt_lock);
- MODINC(evt_in, I2O_EVT_Q_LEN);
- if(evt_q_len == I2O_EVT_Q_LEN)
- MODINC(evt_out, I2O_EVT_Q_LEN);
- else
- evt_q_len++;
- spin_unlock(&i2o_evt_lock);
-
- up(&evt_sem);
- wake_up_interruptible(&evt_wait);
- return;
- }
-
- if(m->function == I2O_CMD_LCT_NOTIFY)
- {
- up(&c->lct_sem);
- return;
- }
-
- /*
- * 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;
-}
-
-/**
- * i2o_install_handler - install a message handler
- * @h: Handler structure
- *
- * Install an I2O handler - these handle the asynchronous messaging
- * from the card once it has initialised. If the table of handlers is
- * full then -ENOSPC is returned. On a success 0 is returned and the
- * context field is set by the function. The structure is part of the
- * system from this time onwards. It must not be freed until it has
- * been uninstalled
- */
-
-int i2o_install_handler(struct i2o_handler *h)
-{
- int i;
- down(&i2o_configuration_lock);
- for(i=0;i<MAX_I2O_MODULES;i++)
- {
- if(i2o_handlers[i]==NULL)
- {
- h->context = i;
- i2o_handlers[i]=h;
- up(&i2o_configuration_lock);
- return 0;
- }
- }
- up(&i2o_configuration_lock);
- return -ENOSPC;
-}
-
-/**
- * i2o_remove_handler - remove an i2o message handler
- * @h: handler
- *
- * Remove a message handler previously installed with i2o_install_handler.
- * After this function returns the handler object can be freed or re-used
- */
-
-int i2o_remove_handler(struct i2o_handler *h)
-{
- i2o_handlers[h->context]=NULL;
- return 0;
-}
-
-
-/*
- * Each I2O controller has a chain of devices on it.
- * Each device has a pointer to it's LCT entry to be used
- * for fun purposes.
- */
-
-/**
- * i2o_install_device - attach a device to a controller
- * @c: controller
- * @d: device
- *
- * Add a new device to an i2o controller. This can be called from
- * non interrupt contexts only. It adds the device and marks it as
- * unclaimed. The device memory becomes part of the kernel and must
- * be uninstalled before being freed or reused. Zero is returned
- * on success.
- */
-
-int i2o_install_device(struct i2o_controller *c, struct i2o_device *d)
-{
- int i;
-
- down(&i2o_configuration_lock);
- d->controller=c;
- d->owner=NULL;
- d->next=c->devices;
- d->prev=NULL;
- if (c->devices != NULL)
- c->devices->prev=d;
- c->devices=d;
- *d->dev_name = 0;
-
- for(i = 0; i < I2O_MAX_MANAGERS; i++)
- d->managers[i] = NULL;
-
- up(&i2o_configuration_lock);
- return 0;
-}
-
-/* we need this version to call out of i2o_delete_controller */
-
-int __i2o_delete_device(struct i2o_device *d)
-{
- struct i2o_device **p;
- int i;
-
- p=&(d->controller->devices);
-
- /*
- * Hey we have a driver!
- * Check to see if the driver wants us to notify it of
- * device deletion. If it doesn't we assume that it
- * is unsafe to delete a device with an owner and
- * fail.
- */
- if(d->owner)
- {
- if(d->owner->dev_del_notify)
- {
- dprintk(KERN_INFO "Device has owner, notifying\n");
- d->owner->dev_del_notify(d->controller, d);
- if(d->owner)
- {
- printk(KERN_WARNING
- "Driver \"%s\" did not release device!\n", d->owner->name);
- return -EBUSY;
- }
- }
- else
- return -EBUSY;
- }
-
- /*
- * Tell any other users who are talking to this device
- * that it's going away. We assume that everything works.
- */
- for(i=0; i < I2O_MAX_MANAGERS; i++)
- {
- if(d->managers[i] && d->managers[i]->dev_del_notify)
- d->managers[i]->dev_del_notify(d->controller, d);
- }
-
- while(*p!=NULL)
- {
- if(*p==d)
- {
- /*
- * Destroy
- */
- *p=d->next;
- kfree(d);
- return 0;
- }
- p=&((*p)->next);
- }
- printk(KERN_ERR "i2o_delete_device: passed invalid device.\n");
- return -EINVAL;
-}
-
-/**
- * i2o_delete_device - remove an i2o device
- * @d: device to remove
- *
- * This function unhooks a device from a controller. The device
- * will not be unhooked if it has an owner who does not wish to free
- * it, or if the owner lacks a dev_del_notify function. In that case
- * -EBUSY is returned. On success 0 is returned. Other errors cause
- * negative errno values to be returned
- */
-
-int i2o_delete_device(struct i2o_device *d)
-{
- int ret;
-
- down(&i2o_configuration_lock);
-
- /*
- * Seek, locate
- */
-
- ret = __i2o_delete_device(d);
-
- up(&i2o_configuration_lock);
-
- return ret;
-}
-
-/**
- * i2o_install_controller - attach a controller
- * @c: controller
- *
- * Add a new controller to the i2o layer. This can be called from
- * non interrupt contexts only. It adds the controller and marks it as
- * unused with no devices. If the tables are full or memory allocations
- * fail then a negative errno code is returned. On success zero is
- * returned and the controller is bound to the system. The structure
- * must not be freed or reused until being uninstalled.
- */
-
-int i2o_install_controller(struct i2o_controller *c)
-{
- int i;
- down(&i2o_configuration_lock);
- for(i=0;i<MAX_I2O_CONTROLLERS;i++)
- {
- if(i2o_controllers[i]==NULL)
- {
- c->dlct = (i2o_lct*)kmalloc(8192, GFP_KERNEL);
- if(c->dlct==NULL)
- {
- up(&i2o_configuration_lock);
- return -ENOMEM;
- }
- i2o_controllers[i]=c;
- c->devices = NULL;
- c->next=i2o_controller_chain;
- i2o_controller_chain=c;
- c->unit = i;
- c->page_frame = NULL;
- c->hrt = NULL;
- c->lct = NULL;
- c->status_block = NULL;
- sprintf(c->name, "i2o/iop%d", i);
- i2o_num_controllers++;
- init_MUTEX_LOCKED(&c->lct_sem);
- up(&i2o_configuration_lock);
- return 0;
- }
- }
- printk(KERN_ERR "No free i2o controller slots.\n");
- up(&i2o_configuration_lock);
- return -EBUSY;
-}
-
-/**
- * i2o_delete_controller - delete a controller
- * @c: controller
- *
- * Remove an i2o controller from the system. If the controller or its
- * devices are busy then -EBUSY is returned. On a failure a negative
- * errno code is returned. On success zero is returned.
- */
-
-int i2o_delete_controller(struct i2o_controller *c)
-{
- struct i2o_controller **p;
- int users;
- char name[16];
- int stat;
-
- dprintk(KERN_INFO "Deleting controller %s\n", c->name);
-
- /*
- * Clear event registration as this can cause weird behavior
- */
- if(c->status_block->iop_state == ADAPTER_STATE_OPERATIONAL)
- i2o_event_register(c, core_context, 0, 0, 0);
-
- down(&i2o_configuration_lock);
- if((users=atomic_read(&c->users)))
- {
- dprintk(KERN_INFO "I2O: %d users for controller %s\n", users,
- c->name);
- up(&i2o_configuration_lock);
- return -EBUSY;
- }
- while(c->devices)
- {
- if(__i2o_delete_device(c->devices)<0)
- {
- /* Shouldnt happen */
- c->bus_disable(c);
- up(&i2o_configuration_lock);
- return -EBUSY;
- }
- }
-
- /*
- * If this is shutdown time, the thread's already been killed
- */
- if(c->lct_running) {
- stat = kill_proc(c->lct_pid, SIGTERM, 1);
- if(!stat) {
- int count = 10 * 100;
- while(c->lct_running && --count) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(1);
- }
-
- if(!count)
- printk(KERN_ERR
- "%s: LCT thread still running!\n",
- c->name);
- }
- }
-
- p=&i2o_controller_chain;
-
- while(*p)
- {
- if(*p==c)
- {
- /* Ask the IOP to switch to RESET state */
- i2o_reset_controller(c);
-
- /* Release IRQ */
- c->destructor(c);
-
- *p=c->next;
- up(&i2o_configuration_lock);
-
- if(c->page_frame)
- kfree(c->page_frame);
- if(c->hrt)
- kfree(c->hrt);
- if(c->lct)
- kfree(c->lct);
- if(c->status_block)
- kfree(c->status_block);
- if(c->dlct)
- kfree(c->dlct);
-
- i2o_controllers[c->unit]=NULL;
- memcpy(name, c->name, strlen(c->name)+1);
- kfree(c);
- dprintk(KERN_INFO "%s: Deleted from controller chain.\n", name);
-
- i2o_num_controllers--;
- return 0;
- }
- p=&((*p)->next);
- }
- up(&i2o_configuration_lock);
- printk(KERN_ERR "i2o_delete_controller: bad pointer!\n");
- return -ENOENT;
-}
-
-/**
- * i2o_unlock_controller - unlock a controller
- * @c: controller to unlock
- *
- * Take a lock on an i2o controller. This prevents it being deleted.
- * i2o controllers are not refcounted so a deletion of an in use device
- * will fail, not take affect on the last dereference.
- */
-
-void i2o_unlock_controller(struct i2o_controller *c)
-{
- atomic_dec(&c->users);
-}
-
-/**
- * i2o_find_controller - return a locked controller
- * @n: controller number
- *
- * Returns a pointer to the controller object. The controller is locked
- * on return. NULL is returned if the controller is not found.
- */
-
-struct i2o_controller *i2o_find_controller(int n)
-{
- struct i2o_controller *c;
-
- if(n<0 || n>=MAX_I2O_CONTROLLERS)
- return NULL;
-
- down(&i2o_configuration_lock);
- c=i2o_controllers[n];
- if(c!=NULL)
- atomic_inc(&c->users);
- up(&i2o_configuration_lock);
- return c;
-}
-
-/**
- * i2o_issue_claim - claim or release a device
- * @cmd: command
- * @c: controller to claim for
- * @tid: i2o task id
- * @type: type of claim
- *
- * Issue I2O UTIL_CLAIM and UTIL_RELEASE messages. The message to be sent
- * is set by cmd. The tid is the task id of the object to claim and the
- * type is the claim type (see the i2o standard)
- *
- * Zero is returned on success.
- */
-
-static int i2o_issue_claim(u32 cmd, struct i2o_controller *c, int tid, u32 type)
-{
- u32 msg[5];
-
- msg[0] = FIVE_WORD_MSG_SIZE | SGL_OFFSET_0;
- msg[1] = cmd << 24 | HOST_TID<<12 | tid;
- msg[3] = 0;
- msg[4] = type;
-
- return i2o_post_wait(c, msg, sizeof(msg), 60);
-}
-
-/*
- * i2o_claim_device - claim a device for use by an OSM
- * @d: device to claim
- * @h: handler for this device
- *
- * Do the leg work to assign a device to a given OSM on Linux. The
- * kernel updates the internal handler data for the device and then
- * performs an I2O claim for the device, attempting to claim the
- * device as primary. If the attempt fails a negative errno code
- * is returned. On success zero is returned.
- */
-
-int i2o_claim_device(struct i2o_device *d, struct i2o_handler *h)
-{
- down(&i2o_configuration_lock);
- if (d->owner) {
- printk(KERN_INFO "Device claim called, but dev already owned by %s!",
- h->name);
- up(&i2o_configuration_lock);
- return -EBUSY;
- }
- d->owner=h;
-
- if(i2o_issue_claim(I2O_CMD_UTIL_CLAIM ,d->controller,d->lct_data.tid,
- I2O_CLAIM_PRIMARY))
- {
- d->owner = NULL;
- return -EBUSY;
- }
- up(&i2o_configuration_lock);
- return 0;
-}
-
-/**
- * i2o_release_device - release a device that the OSM is using
- * @d: device to claim
- * @h: handler for this device
- *
- * Drop a claim by an OSM on a given I2O device. The handler is cleared
- * and 0 is returned on success.
- *
- * AC - some devices seem to want to refuse an unclaim until they have
- * finished internal processing. It makes sense since you don't want a
- * new device to go reconfiguring the entire system until you are done.
- * Thus we are prepared to wait briefly.
- */
-
-int i2o_release_device(struct i2o_device *d, struct i2o_handler *h)
-{
- int err = 0;
- int tries;
-
- down(&i2o_configuration_lock);
- if (d->owner != h) {
- printk(KERN_INFO "Claim release called, but not owned by %s!\n",
- h->name);
- up(&i2o_configuration_lock);
- return -ENOENT;
- }
-
- for(tries=0;tries<10;tries++)
- {
- d->owner = NULL;
-
- /*
- * If the controller takes a nonblocking approach to
- * releases we have to sleep/poll for a few times.
- */
-
- if((err=i2o_issue_claim(I2O_CMD_UTIL_RELEASE, d->controller, d->lct_data.tid, I2O_CLAIM_PRIMARY)) )
- {
- err = -ENXIO;
- current->state = TASK_UNINTERRUPTIBLE;
- schedule_timeout(HZ);
- }
- else
- {
- err=0;
- break;
- }
- }
- up(&i2o_configuration_lock);
- return err;
-}
-
-/**
- * i2o_device_notify_on - Enable deletion notifiers
- * @d: device for notification
- * @h: handler to install
- *
- * Called by OSMs to let the core know that they want to be
- * notified if the given device is deleted from the system.
- */
-
-int i2o_device_notify_on(struct i2o_device *d, struct i2o_handler *h)
-{
- int i;
-
- if(d->num_managers == I2O_MAX_MANAGERS)
- return -ENOSPC;
-
- for(i = 0; i < I2O_MAX_MANAGERS; i++)
- {
- if(!d->managers[i])
- {
- d->managers[i] = h;
- break;
- }
- }
-
- d->num_managers++;
-
- return 0;
-}
-
-/**
- * i2o_device_notify_off - Remove deletion notifiers
- * @d: device for notification
- * @h: handler to remove
- *
- * Called by OSMs to let the core know that they no longer
- * are interested in the fate of the given device.
- */
-int i2o_device_notify_off(struct i2o_device *d, struct i2o_handler *h)
-{
- int i;
-
- for(i=0; i < I2O_MAX_MANAGERS; i++)
- {
- if(d->managers[i] == h)
- {
- d->managers[i] = NULL;
- d->num_managers--;
- return 0;
- }
- }
-
- return -ENOENT;
-}
-
-/**
- * i2o_event_register - register interest in an event
- * @c: Controller to register interest with
- * @tid: I2O task id
- * @init_context: initiator context to use with this notifier
- * @tr_context: transaction context to use with this notifier
- * @evt_mask: mask of events
- *
- * Create and posts an event registration message to the task. No reply
- * is waited for, or expected. Errors in posting will be reported.
- */
-
-int i2o_event_register(struct i2o_controller *c, u32 tid,
- u32 init_context, u32 tr_context, u32 evt_mask)
-{
- u32 msg[5]; // Not performance critical, so we just
- // i2o_post_this it instead of building it
- // in IOP memory
-
- msg[0] = FIVE_WORD_MSG_SIZE|SGL_OFFSET_0;
- msg[1] = I2O_CMD_UTIL_EVT_REGISTER<<24 | HOST_TID<<12 | tid;
- msg[2] = init_context;
- msg[3] = tr_context;
- msg[4] = evt_mask;
-
- return i2o_post_this(c, msg, sizeof(msg));
-}
-
-/*
- * i2o_event_ack - acknowledge an event
- * @c: controller
- * @msg: pointer to the UTIL_EVENT_REGISTER reply we received
- *
- * We just take a pointer to the original UTIL_EVENT_REGISTER reply
- * message and change the function code since that's what spec
- * describes an EventAck message looking like.
- */
-
-int i2o_event_ack(struct i2o_controller *c, u32 *msg)
-{
- struct i2o_message *m = (struct i2o_message *)msg;
-
- m->function = I2O_CMD_UTIL_EVT_ACK;
-
- return i2o_post_wait(c, msg, m->size * 4, 2);
-}
-
-/*
- * Core event handler. Runs as a separate thread and is woken
- * up whenever there is an Executive class event.
- */
-static int i2o_core_evt(void *reply_data)
-{
- struct reply_info *reply = (struct reply_info *) reply_data;
- u32 *msg = reply->msg;
- struct i2o_controller *c = NULL;
- unsigned long flags;
-
- lock_kernel();
- daemonize();
- unlock_kernel();
-
- strcpy(current->comm, "i2oevtd");
- evt_running = 1;
-
- while(1)
- {
- if(down_interruptible(&evt_sem))
- {
- dprintk(KERN_INFO "I2O event thread dead\n");
- printk("exiting...");
- evt_running = 0;
- complete_and_exit(&evt_dead, 0);
- }
-
- /*
- * Copy the data out of the queue so that we don't have to lock
- * around the whole function and just around the qlen update
- */
- spin_lock_irqsave(&i2o_evt_lock, flags);
- memcpy(reply, &events[evt_out], sizeof(struct reply_info));
- MODINC(evt_out, I2O_EVT_Q_LEN);
- evt_q_len--;
- spin_unlock_irqrestore(&i2o_evt_lock, flags);
-
- c = reply->iop;
- dprintk(KERN_INFO "I2O IRTOS EVENT: iop%d, event %#10x\n", c->unit, msg[4]);
-
- /*
- * We do not attempt to delete/quiesce/etc. the controller if
- * some sort of error indidication occurs. We may want to do
- * so in the future, but for now we just let the user deal with
- * it. One reason for this is that what to do with an error
- * or when to send what ærror is not really agreed on, so
- * we get errors that may not be fatal but just look like they
- * are...so let the user deal with it.
- */
- switch(msg[4])
- {
- case I2O_EVT_IND_EXEC_RESOURCE_LIMITS:
- printk(KERN_ERR "%s: Out of resources\n", c->name);
- break;
-
- case I2O_EVT_IND_EXEC_POWER_FAIL:
- printk(KERN_ERR "%s: Power failure\n", c->name);
- break;
-
- case I2O_EVT_IND_EXEC_HW_FAIL:
- {
- char *fail[] =
- {
- "Unknown Error",
- "Power Lost",
- "Code Violation",
- "Parity Error",
- "Code Execution Exception",
- "Watchdog Timer Expired"
- };
-
- if(msg[5] <= 6)
- printk(KERN_ERR "%s: Hardware Failure: %s\n",
- c->name, fail[msg[5]]);
- else
- printk(KERN_ERR "%s: Unknown Hardware Failure\n", c->name);
-
- break;
- }
-
- /*
- * New device created
- * - Create a new i2o_device entry
- * - Inform all interested drivers about this device's existence
- */
- case I2O_EVT_IND_EXEC_NEW_LCT_ENTRY:
- {
- struct i2o_device *d = (struct i2o_device *)
- kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
- int i;
-
- if (d == NULL) {
- printk(KERN_EMERG "i2oevtd: out of memory\n");
- break;
- }
- memcpy(&d->lct_data, &msg[5], sizeof(i2o_lct_entry));
-
- d->next = NULL;
- d->controller = c;
- d->flags = 0;
-
- i2o_report_controller_unit(c, d);
- i2o_install_device(c,d);
-
- for(i = 0; i < MAX_I2O_MODULES; i++)
- {
- if(i2o_handlers[i] &&
- i2o_handlers[i]->new_dev_notify &&
- (i2o_handlers[i]->class&d->lct_data.class_id))
- {
- spin_lock(&i2o_dev_lock);
- i2o_handlers[i]->new_dev_notify(c,d);
- spin_unlock(&i2o_dev_lock);
- }
- }
-
- break;
- }
-
- /*
- * LCT entry for a device has been modified, so update it
- * internally.
- */
- case I2O_EVT_IND_EXEC_MODIFIED_LCT:
- {
- struct i2o_device *d;
- i2o_lct_entry *new_lct = (i2o_lct_entry *)&msg[5];
-
- for(d = c->devices; d; d = d->next)
- {
- if(d->lct_data.tid == new_lct->tid)
- {
- memcpy(&d->lct_data, new_lct, sizeof(i2o_lct_entry));
- break;
- }
- }
- break;
- }
-
- case I2O_EVT_IND_CONFIGURATION_FLAG:
- printk(KERN_WARNING "%s requires user configuration\n", c->name);
- break;
-
- case I2O_EVT_IND_GENERAL_WARNING:
- printk(KERN_WARNING "%s: Warning notification received!"
- "Check configuration for errors!\n", c->name);
- break;
-
- case I2O_EVT_IND_EVT_MASK_MODIFIED:
- /* Well I guess that was us hey .. */
- break;
-
- default:
- printk(KERN_WARNING "%s: No handler for event (0x%08x)\n", c->name, msg[4]);
- break;
- }
- }
-
- return 0;
-}
-
-/*
- * Dynamic LCT update. This compares the LCT with the currently
- * installed devices to check for device deletions..this needed b/c there
- * is no DELETED_LCT_ENTRY EventIndicator for the Executive class so
- * we can't just have the event handler do this...annoying
- *
- * This is a hole in the spec that will hopefully be fixed someday.
- */
-static int i2o_dyn_lct(void *foo)
-{
- struct i2o_controller *c = (struct i2o_controller *)foo;
- struct i2o_device *d = NULL;
- struct i2o_device *d1 = NULL;
- int i = 0;
- int found = 0;
- int entries;
- void *tmp;
- char name[16];
-
- lock_kernel();
- daemonize();
- unlock_kernel();
-
- sprintf(name, "iop%d_lctd", c->unit);
- strcpy(current->comm, name);
-
- c->lct_running = 1;
-
- while(1)
- {
- down_interruptible(&c->lct_sem);
- if(signal_pending(current))
- {
- dprintk(KERN_ERR "%s: LCT thread dead\n", c->name);
- c->lct_running = 0;
- return 0;
- }
-
- entries = c->dlct->table_size;
- entries -= 3;
- entries /= 9;
-
- dprintk(KERN_INFO "%s: Dynamic LCT Update\n",c->name);
- dprintk(KERN_INFO "%s: Dynamic LCT contains %d entries\n", c->name, entries);
-
- if(!entries)
- {
- printk(KERN_INFO "%s: Empty LCT???\n", c->name);
- continue;
- }
-
- /*
- * Loop through all the devices on the IOP looking for their
- * LCT data in the LCT. We assume that TIDs are not repeated.
- * as that is the only way to really tell. It's been confirmed
- * by the IRTOS vendor(s?) that TIDs are not reused until they
- * wrap arround(4096), and I doubt a system will up long enough
- * to create/delete that many devices.
- */
- for(d = c->devices; d; )
- {
- found = 0;
- d1 = d->next;
-
- for(i = 0; i < entries; i++)
- {
- if(d->lct_data.tid == c->dlct->lct_entry[i].tid)
- {
- found = 1;
- break;
- }
- }
- if(!found)
- {
- dprintk(KERN_INFO "i2o_core: Deleted device!\n");
- spin_lock(&i2o_dev_lock);
- i2o_delete_device(d);
- spin_unlock(&i2o_dev_lock);
- }
- d = d1;
- }
-
- /*
- * Tell LCT to renotify us next time there is a change
- */
- i2o_lct_notify(c);
-
- /*
- * Copy new LCT into public LCT
- *
- * Possible race if someone is reading LCT while we are copying
- * over it. If this happens, we'll fix it then. but I doubt that
- * the LCT will get updated often enough or will get read by
- * a user often enough to worry.
- */
- if(c->lct->table_size < c->dlct->table_size)
- {
- tmp = c->lct;
- c->lct = kmalloc(c->dlct->table_size<<2, GFP_KERNEL);
- if(!c->lct)
- {
- printk(KERN_ERR "%s: No memory for LCT!\n", c->name);
- c->lct = tmp;
- continue;
- }
- kfree(tmp);
- }
- memcpy(c->lct, c->dlct, c->dlct->table_size<<2);
- }
-
- return 0;
-}
-
-/**
- * i2o_run_queue - process pending events on a controller
- * @c: controller to process
- *
- * This is called by the bus specific driver layer when an interrupt
- * or poll of this card interface is desired.
- */
-
-void i2o_run_queue(struct i2o_controller *c)
-{
- struct i2o_message *m;
- u32 mv;
- u32 *msg;
-
- /*
- * Old 960 steppings had a bug in the I2O unit that caused
- * the queue to appear empty when it wasn't.
- */
- if((mv=I2O_REPLY_READ32(c))==0xFFFFFFFF)
- mv=I2O_REPLY_READ32(c);
-
- while(mv!=0xFFFFFFFF)
- {
- struct i2o_handler *i;
- m=(struct i2o_message *)bus_to_virt(mv);
- msg=(u32*)m;
-
- i=i2o_handlers[m->initiator_context&(MAX_I2O_MODULES-1)];
- if(i && i->reply)
- i->reply(i,c,m);
- else
- {
- printk(KERN_WARNING "I2O: Spurious reply to handler %d\n",
- m->initiator_context&(MAX_I2O_MODULES-1));
- }
- i2o_flush_reply(c,mv);
- mb();
-
- /* That 960 bug again... */
- if((mv=I2O_REPLY_READ32(c))==0xFFFFFFFF)
- mv=I2O_REPLY_READ32(c);
- }
-}
-
-
-/**
- * i2o_get_class_name - do i2o class name lookup
- * @class: class number
- *
- * Return a descriptive string for an i2o class
- */
-
-const char *i2o_get_class_name(int class)
-{
- int idx = 16;
- static char *i2o_class_name[] = {
- "Executive",
- "Device Driver Module",
- "Block Device",
- "Tape Device",
- "LAN Interface",
- "WAN Interface",
- "Fibre Channel Port",
- "Fibre Channel Device",
- "SCSI Device",
- "ATE Port",
- "ATE Device",
- "Floppy Controller",
- "Floppy Device",
- "Secondary Bus Port",
- "Peer Transport Agent",
- "Peer Transport",
- "Unknown"
- };
-
- switch(class&0xFFF)
- {
- case I2O_CLASS_EXECUTIVE:
- idx = 0; break;
- case I2O_CLASS_DDM:
- idx = 1; break;
- case I2O_CLASS_RANDOM_BLOCK_STORAGE:
- idx = 2; break;
- case I2O_CLASS_SEQUENTIAL_STORAGE:
- idx = 3; break;
- case I2O_CLASS_LAN:
- idx = 4; break;
- case I2O_CLASS_WAN:
- idx = 5; break;
- case I2O_CLASS_FIBRE_CHANNEL_PORT:
- idx = 6; break;
- case I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL:
- idx = 7; break;
- case I2O_CLASS_SCSI_PERIPHERAL:
- idx = 8; break;
- case I2O_CLASS_ATE_PORT:
- idx = 9; break;
- case I2O_CLASS_ATE_PERIPHERAL:
- idx = 10; break;
- case I2O_CLASS_FLOPPY_CONTROLLER:
- idx = 11; break;
- case I2O_CLASS_FLOPPY_DEVICE:
- idx = 12; break;
- case I2O_CLASS_BUS_ADAPTER_PORT:
- idx = 13; break;
- case I2O_CLASS_PEER_TRANSPORT_AGENT:
- idx = 14; break;
- case I2O_CLASS_PEER_TRANSPORT:
- idx = 15; break;
- }
-
- return i2o_class_name[idx];
-}
-
-
-/**
- * i2o_wait_message - obtain an i2o message from the IOP
- * @c: controller
- * @why: explanation
- *
- * This function waits up to 5 seconds for a message slot to be
- * available. If no message is available it prints an error message
- * that is expected to be what the message will be used for (eg
- * "get_status"). 0xFFFFFFFF is returned on a failure.
- *
- * On a success the message is returned. This is the physical page
- * frame offset address from the read port. (See the i2o spec)
- */
-
-u32 i2o_wait_message(struct i2o_controller *c, char *why)
-{
- long time=jiffies;
- u32 m;
- while((m=I2O_POST_READ32(c))==0xFFFFFFFF)
- {
- if((jiffies-time)>=5*HZ)
- {
- dprintk(KERN_ERR "%s: Timeout waiting for message frame to send %s.\n",
- c->name, why);
- return 0xFFFFFFFF;
- }
- schedule();
- barrier();
- }
- return m;
-}
-
-/**
- * i2o_report_controller_unit - print information about a tid
- * @c: controller
- * @d: device
- *
- * Dump an information block associated with a given unit (TID). The
- * tables are read and a block of text is output to printk that is
- * formatted intended for the user.
- */
-
-void i2o_report_controller_unit(struct i2o_controller *c, struct i2o_device *d)
-{
- char buf[64];
- char str[22];
- int ret;
- int unit = d->lct_data.tid;
-
- if(verbose==0)
- return;
-
- printk(KERN_INFO "Target ID %d.\n", unit);
- if((ret=i2o_query_scalar(c, unit, 0xF100, 3, buf, 16))>=0)
- {
- buf[16]=0;
- printk(KERN_INFO " Vendor: %s\n", buf);
- }
- if((ret=i2o_query_scalar(c, unit, 0xF100, 4, buf, 16))>=0)
- {
- buf[16]=0;
- printk(KERN_INFO " Device: %s\n", buf);
- }
- if(i2o_query_scalar(c, unit, 0xF100, 5, buf, 16)>=0)
- {
- buf[16]=0;
- printk(KERN_INFO " Description: %s\n", buf);
- }
- if((ret=i2o_query_scalar(c, unit, 0xF100, 6, buf, 8))>=0)
- {
- buf[8]=0;
- printk(KERN_INFO " Rev: %s\n", buf);
- }
-
- printk(KERN_INFO " Class: ");
- sprintf(str, "%-21s", i2o_get_class_name(d->lct_data.class_id));
- printk("%s\n", str);
-
- printk(KERN_INFO " Subclass: 0x%04X\n", d->lct_data.sub_class);
- printk(KERN_INFO " Flags: ");
-
- if(d->lct_data.device_flags&(1<<0))
- printk("C"); // ConfigDialog requested
- if(d->lct_data.device_flags&(1<<1))
- printk("U"); // Multi-user capable
- if(!(d->lct_data.device_flags&(1<<4)))
- printk("P"); // Peer service enabled!
- if(!(d->lct_data.device_flags&(1<<5)))
- printk("M"); // Mgmt service enabled!
- printk("\n");
-
-}
-
-
-/*
- * Parse the hardware resource table. Right now we print it out
- * and don't do a lot with it. We should collate these and then
- * interact with the Linux resource allocation block.
- *
- * Lets prove we can read it first eh ?
- *
- * This is full of endianisms!
- */
-
-static int i2o_parse_hrt(struct i2o_controller *c)
-{
-#ifdef DRIVERDEBUG
- u32 *rows=(u32*)c->hrt;
- u8 *p=(u8 *)c->hrt;
- u8 *d;
- int count;
- int length;
- int i;
- int state;
-
- if(p[3]!=0)
- {
- printk(KERN_ERR "%s: HRT table for controller is too new a version.\n",
- c->name);
- return -1;
- }
-
- count=p[0]|(p[1]<<8);
- length = p[2];
-
- printk(KERN_INFO "%s: HRT has %d entries of %d bytes each.\n",
- c->name, count, length<<2);
-
- rows+=2;
-
- for(i=0;i<count;i++)
- {
- printk(KERN_INFO "Adapter %08X: ", rows[0]);
- p=(u8 *)(rows+1);
- d=(u8 *)(rows+2);
- state=p[1]<<8|p[0];
-
- printk("TID %04X:[", state&0xFFF);
- state>>=12;
- if(state&(1<<0))
- printk("H"); /* Hidden */
- if(state&(1<<2))
- {
- printk("P"); /* Present */
- if(state&(1<<1))
- printk("C"); /* Controlled */
- }
- if(state>9)
- printk("*"); /* Hard */
-
- printk("]:");
-
- switch(p[3]&0xFFFF)
- {
- case 0:
- /* Adapter private bus - easy */
- printk("Local bus %d: I/O at 0x%04X Mem 0x%08X",
- p[2], d[1]<<8|d[0], *(u32 *)(d+4));
- break;
- case 1:
- /* ISA bus */
- printk("ISA %d: CSN %d I/O at 0x%04X Mem 0x%08X",
- p[2], d[2], d[1]<<8|d[0], *(u32 *)(d+4));
- break;
-
- case 2: /* EISA bus */
- printk("EISA %d: Slot %d I/O at 0x%04X Mem 0x%08X",
- p[2], d[3], d[1]<<8|d[0], *(u32 *)(d+4));
- break;
-
- case 3: /* MCA bus */
- printk("MCA %d: Slot %d I/O at 0x%04X Mem 0x%08X",
- p[2], d[3], d[1]<<8|d[0], *(u32 *)(d+4));
- break;
-
- case 4: /* PCI bus */
- printk("PCI %d: Bus %d Device %d Function %d",
- p[2], d[2], d[1], d[0]);
- break;
-
- case 0x80: /* Other */
- default:
- printk("Unsupported bus type.");
- break;
- }
- printk("\n");
- rows+=length;
- }
-#endif
- return 0;
-}
-
-/*
- * The logical configuration table tells us what we can talk to
- * on the board. Most of the stuff isn't interesting to us.
- */
-
-static int i2o_parse_lct(struct i2o_controller *c)
-{
- int i;
- int max;
- int tid;
- struct i2o_device *d;
- i2o_lct *lct = c->lct;
-
- if (lct == NULL) {
- printk(KERN_ERR "%s: LCT is empty???\n", c->name);
- return -1;
- }
-
- max = lct->table_size;
- max -= 3;
- max /= 9;
-
- printk(KERN_INFO "%s: LCT has %d entries.\n", c->name, max);
-
- if(lct->iop_flags&(1<<0))
- printk(KERN_WARNING "%s: Configuration dialog desired.\n", c->name);
-
- for(i=0;i<max;i++)
- {
- d = (struct i2o_device *)kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
- if(d==NULL)
- {
- printk(KERN_CRIT "i2o_core: Out of memory for I2O device data.\n");
- return -ENOMEM;
- }
-
- d->controller = c;
- d->next = NULL;
-
- memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
-
- d->flags = 0;
- tid = d->lct_data.tid;
-
- i2o_report_controller_unit(c, d);
-
- i2o_install_device(c, d);
- }
- return 0;
-}
-
-
-/**
- * i2o_quiesce_controller - quiesce controller
- * @c: controller
- *
- * Quiesce an IOP. Causes IOP to make external operation quiescent
- * (i2o 'READY' state). Internal operation of the IOP continues normally.
- */
-
-int i2o_quiesce_controller(struct i2o_controller *c)
-{
- u32 msg[4];
- int ret;
-
- i2o_status_get(c);
-
- /* SysQuiesce discarded if IOP not in READY or OPERATIONAL state */
-
- if ((c->status_block->iop_state != ADAPTER_STATE_READY) &&
- (c->status_block->iop_state != ADAPTER_STATE_OPERATIONAL))
- {
- return 0;
- }
-
- msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
- msg[1] = I2O_CMD_SYS_QUIESCE<<24|HOST_TID<<12|ADAPTER_TID;
- msg[3] = 0;
-
- /* Long timeout needed for quiesce if lots of devices */
-
- if ((ret = i2o_post_wait(c, msg, sizeof(msg), 240)))
- printk(KERN_INFO "%s: Unable to quiesce (status=%#x).\n",
- c->name, -ret);
- else
- dprintk(KERN_INFO "%s: Quiesced.\n", c->name);
-
- i2o_status_get(c); // Entered READY state
- return ret;
-}
-
-/**
- * i2o_enable_controller - move controller from ready to operational
- * @c: controller
- *
- * Enable IOP. This allows the IOP to resume external operations and
- * reverses the effect of a quiesce. In the event of an error a negative
- * errno code is returned.
- */
-
-int i2o_enable_controller(struct i2o_controller *c)
-{
- u32 msg[4];
- int ret;
-
- i2o_status_get(c);
-
- /* Enable only allowed on READY state */
- if(c->status_block->iop_state != ADAPTER_STATE_READY)
- return -EINVAL;
-
- msg[0]=FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
- msg[1]=I2O_CMD_SYS_ENABLE<<24|HOST_TID<<12|ADAPTER_TID;
-
- /* How long of a timeout do we need? */
-
- if ((ret = i2o_post_wait(c, msg, sizeof(msg), 240)))
- printk(KERN_ERR "%s: Could not enable (status=%#x).\n",
- c->name, -ret);
- else
- dprintk(KERN_INFO "%s: Enabled.\n", c->name);
-
- i2o_status_get(c); // entered OPERATIONAL state
-
- return ret;
-}
-
-/**
- * i2o_clear_controller - clear a controller
- * @c: controller
- *
- * Clear an IOP to HOLD state, ie. terminate external operations, clear all
- * input queues and prepare for a system restart. IOP's internal operation
- * continues normally and the outbound queue is alive.
- * The IOP is not expected to rebuild its LCT.
- */
-
-int i2o_clear_controller(struct i2o_controller *c)
-{
- struct i2o_controller *iop;
- u32 msg[4];
- int ret;
-
- /* Quiesce all IOPs first */
-
- for (iop = i2o_controller_chain; iop; iop = iop->next)
- i2o_quiesce_controller(iop);
-
- msg[0]=FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
- msg[1]=I2O_CMD_ADAPTER_CLEAR<<24|HOST_TID<<12|ADAPTER_TID;
- msg[3]=0;
-
- if ((ret=i2o_post_wait(c, msg, sizeof(msg), 30)))
- printk(KERN_INFO "%s: Unable to clear (status=%#x).\n",
- c->name, -ret);
- else
- dprintk(KERN_INFO "%s: Cleared.\n",c->name);
-
- i2o_status_get(c);
-
- /* Enable other IOPs */
-
- for (iop = i2o_controller_chain; iop; iop = iop->next)
- if (iop != c)
- i2o_enable_controller(iop);
-
- return ret;
-}
-
-
-/**
- * i2o_reset_controller - reset an IOP
- * @c: controller to reset
- *
- * Reset the IOP into INIT state and wait until IOP gets into RESET state.
- * Terminate all external operations, clear IOP's inbound and outbound
- * queues, terminate all DDMs, and reload the IOP's operating environment
- * and all local DDMs. The IOP rebuilds its LCT.
- */
-
-static int i2o_reset_controller(struct i2o_controller *c)
-{
- struct i2o_controller *iop;
- u32 m;
- u8 *status;
- u32 *msg;
- long time;
-
- /* Quiesce all IOPs first */
-
- for (iop = i2o_controller_chain; iop; iop = iop->next)
- {
- if(iop->type != I2O_TYPE_PCI || !iop->bus.pci.dpt)
- i2o_quiesce_controller(iop);
- }
-
- m=i2o_wait_message(c, "AdapterReset");
- if(m==0xFFFFFFFF)
- return -ETIMEDOUT;
- msg=(u32 *)(c->mem_offset+m);
-
- status=(void *)kmalloc(4, GFP_KERNEL);
- if(status==NULL) {
- printk(KERN_ERR "IOP reset failed - no free memory.\n");
- return -ENOMEM;
- }
- memset(status, 0, 4);
-
- msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
- msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
- msg[2]=core_context;
- msg[3]=0;
- msg[4]=0;
- msg[5]=0;
- msg[6]=virt_to_bus(status);
- msg[7]=0; /* 64bit host FIXME */
-
- i2o_post_message(c,m);
-
- /* Wait for a reply */
- time=jiffies;
- while(*status==0)
- {
- if((jiffies-time)>=20*HZ)
- {
- printk(KERN_ERR "IOP reset timeout.\n");
- // Better to leak this for safety: kfree(status);
- return -ETIMEDOUT;
- }
- schedule();
- barrier();
- }
-
- if (*status==I2O_CMD_IN_PROGRESS)
- {
- /*
- * Once the reset is sent, the IOP goes into the INIT state
- * which is indeterminate. We need to wait until the IOP
- * has rebooted before we can let the system talk to
- * it. We read the inbound Free_List until a message is
- * available. If we can't read one in the given ammount of
- * time, we assume the IOP could not reboot properly.
- */
-
- dprintk(KERN_INFO "%s: Reset in progress, waiting for reboot...\n",
- c->name);
-
- time = jiffies;
- m = I2O_POST_READ32(c);
- while(m == 0XFFFFFFFF)
- {
- if((jiffies-time) >= 30*HZ)
- {
- printk(KERN_ERR "%s: Timeout waiting for IOP reset.\n",
- c->name);
- return -ETIMEDOUT;
- }
- schedule();
- barrier();
- m = I2O_POST_READ32(c);
- }
- i2o_flush_reply(c,m);
- }
-
- /* If IopReset was rejected or didn't perform reset, try IopClear */
-
- i2o_status_get(c);
- if (status[0] == I2O_CMD_REJECTED ||
- c->status_block->iop_state != ADAPTER_STATE_RESET)
- {
- printk(KERN_WARNING "%s: Reset rejected, trying to clear\n",c->name);
- i2o_clear_controller(c);
- }
- else
- dprintk(KERN_INFO "%s: Reset completed.\n", c->name);
-
- /* Enable other IOPs */
-
- for (iop = i2o_controller_chain; iop; iop = iop->next)
- if (iop != c)
- i2o_enable_controller(iop);
-
- kfree(status);
- return 0;
-}
-
-
-/**
- * i2o_status_get - get the status block for the IOP
- * @c: controller
- *
- * Issue a status query on the controller. This updates the
- * attached status_block. If the controller fails to reply or an
- * error occurs then a negative errno code is returned. On success
- * zero is returned and the status_blok is updated.
- */
-
-int i2o_status_get(struct i2o_controller *c)
-{
- long time;
- u32 m;
- u32 *msg;
- u8 *status_block;
-
- if (c->status_block == NULL)
- {
- c->status_block = (i2o_status_block *)
- kmalloc(sizeof(i2o_status_block),GFP_KERNEL);
- if (c->status_block == NULL)
- {
- printk(KERN_CRIT "%s: Get Status Block failed; Out of memory.\n",
- c->name);
- return -ENOMEM;
- }
- }
-
- status_block = (u8*)c->status_block;
- memset(c->status_block,0,sizeof(i2o_status_block));
-
- m=i2o_wait_message(c, "StatusGet");
- if(m==0xFFFFFFFF)
- return -ETIMEDOUT;
- msg=(u32 *)(c->mem_offset+m);
-
- msg[0]=NINE_WORD_MSG_SIZE|SGL_OFFSET_0;
- msg[1]=I2O_CMD_STATUS_GET<<24|HOST_TID<<12|ADAPTER_TID;
- msg[2]=core_context;
- msg[3]=0;
- msg[4]=0;
- msg[5]=0;
- msg[6]=virt_to_bus(c->status_block);
- msg[7]=0; /* 64bit host FIXME */
- msg[8]=sizeof(i2o_status_block); /* always 88 bytes */
-
- i2o_post_message(c,m);
-
- /* Wait for a reply */
-
- time=jiffies;
- while(status_block[87]!=0xFF)
- {
- if((jiffies-time)>=5*HZ)
- {
- printk(KERN_ERR "%s: Get status timeout.\n",c->name);
- return -ETIMEDOUT;
- }
- schedule();
- barrier();
- }
-
-#ifdef DRIVERDEBUG
- printk(KERN_INFO "%s: State = ", c->name);
- switch (c->status_block->iop_state) {
- case 0x01:
- printk("INIT\n");
- break;
- case 0x02:
- printk("RESET\n");
- break;
- case 0x04:
- printk("HOLD\n");
- break;
- case 0x05:
- printk("READY\n");
- break;
- case 0x08:
- printk("OPERATIONAL\n");
- break;
- case 0x10:
- printk("FAILED\n");
- break;
- case 0x11:
- printk("FAULTED\n");
- break;
- default:
- printk("%x (unknown !!)\n",c->status_block->iop_state);
-}
-#endif
-
- return 0;
-}
-
-/*
- * Get the Hardware Resource Table for the device.
- * The HRT contains information about possible hidden devices
- * but is mostly useless to us
- */
-int i2o_hrt_get(struct i2o_controller *c)
-{
- u32 msg[6];
- int ret, size = sizeof(i2o_hrt);
-
- /* First read just the header to figure out the real size */
-
- do {
- if (c->hrt == NULL) {
- c->hrt=kmalloc(size, GFP_KERNEL);
- if (c->hrt == NULL) {
- printk(KERN_CRIT "%s: Hrt Get failed; Out of memory.\n", c->name);
- return -ENOMEM;
- }
- }
-
- msg[0]= SIX_WORD_MSG_SIZE| SGL_OFFSET_4;
- msg[1]= I2O_CMD_HRT_GET<<24 | HOST_TID<<12 | ADAPTER_TID;
- msg[3]= 0;
- msg[4]= (0xD0000000 | size); /* Simple transaction */
- msg[5]= virt_to_bus(c->hrt); /* Dump it here */
-
- ret = i2o_post_wait_mem(c, msg, sizeof(msg), 20, c->hrt, NULL);
-
- if(ret == -ETIMEDOUT)
- {
- /* The HRT block we used is in limbo somewhere. When the iop wakes up
- we will recover it */
- c->hrt = NULL;
- return ret;
- }
-
- if(ret<0)
- {
- printk(KERN_ERR "%s: Unable to get HRT (status=%#x)\n",
- c->name, -ret);
- return ret;
- }
-
- if (c->hrt->num_entries * c->hrt->entry_len << 2 > size) {
- size = c->hrt->num_entries * c->hrt->entry_len << 2;
- kfree(c->hrt);
- c->hrt = NULL;
- }
- } while (c->hrt == NULL);
-
- i2o_parse_hrt(c); // just for debugging
-
- return 0;
-}
-
-/*
- * Send the I2O System Table to the specified IOP
- *
- * The system table contains information about all the IOPs in the
- * system. It is build and then sent to each IOP so that IOPs can
- * establish connections between each other.
- *
- */
-static int i2o_systab_send(struct i2o_controller *iop)
-{
- u32 msg[12];
- int ret;
- u32 *privbuf = kmalloc(16, GFP_KERNEL);
- if(privbuf == NULL)
- return -ENOMEM;
-
- if(iop->type == I2O_TYPE_PCI)
- {
- struct resource *root;
-
- if(iop->status_block->current_mem_size < iop->status_block->desired_mem_size)
- {
- struct resource *res = &iop->mem_resource;
- res->name = iop->bus.pci.pdev->bus->name;
- res->flags = IORESOURCE_MEM;
- res->start = 0;
- res->end = 0;
- printk("%s: requires private memory resources.\n", iop->name);
- root = pci_find_parent_resource(iop->bus.pci.pdev, res);
- if(root==NULL)
- printk("Can't find parent resource!\n");
- if(root && allocate_resource(root, res,
- iop->status_block->desired_mem_size,
- iop->status_block->desired_mem_size,
- iop->status_block->desired_mem_size,
- 1<<20, /* Unspecified, so use 1Mb and play safe */
- NULL,
- NULL)>=0)
- {
- iop->mem_alloc = 1;
- iop->status_block->current_mem_size = 1 + res->end - res->start;
- iop->status_block->current_mem_base = res->start;
- printk(KERN_INFO "%s: allocated %ld bytes of PCI memory at 0x%08lX.\n",
- iop->name, 1+res->end-res->start, res->start);
- }
- }
- if(iop->status_block->current_io_size < iop->status_block->desired_io_size)
- {
- struct resource *res = &iop->io_resource;
- res->name = iop->bus.pci.pdev->bus->name;
- res->flags = IORESOURCE_IO;
- res->start = 0;
- res->end = 0;
- printk("%s: requires private memory resources.\n", iop->name);
- root = pci_find_parent_resource(iop->bus.pci.pdev, res);
- if(root==NULL)
- printk("Can't find parent resource!\n");
- if(root && allocate_resource(root, res,
- iop->status_block->desired_io_size,
- iop->status_block->desired_io_size,
- iop->status_block->desired_io_size,
- 1<<20, /* Unspecified, so use 1Mb and play safe */
- NULL,
- NULL)>=0)
- {
- iop->io_alloc = 1;
- iop->status_block->current_io_size = 1 + res->end - res->start;
- iop->status_block->current_mem_base = res->start;
- printk(KERN_INFO "%s: allocated %ld bytes of PCI I/O at 0x%08lX.\n",
- iop->name, 1+res->end-res->start, res->start);
- }
- }
- }
- else
- {
- privbuf[0] = iop->status_block->current_mem_base;
- privbuf[1] = iop->status_block->current_mem_size;
- privbuf[2] = iop->status_block->current_io_base;
- privbuf[3] = iop->status_block->current_io_size;
- }
-
- msg[0] = I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6;
- msg[1] = I2O_CMD_SYS_TAB_SET<<24 | HOST_TID<<12 | ADAPTER_TID;
- msg[3] = 0;
- msg[4] = (0<<16) | ((iop->unit+2) << 12); /* Host 0 IOP ID (unit + 2) */
- msg[5] = 0; /* Segment 0 */
-
- /*
- * Provide three SGL-elements:
- * System table (SysTab), Private memory space declaration and
- * Private i/o space declaration
- *
- * FIXME: provide these for controllers needing them
- */
- msg[6] = 0x54000000 | sys_tbl_len;
- msg[7] = virt_to_bus(sys_tbl);
- msg[8] = 0x54000000 | 8;
- msg[9] = virt_to_bus(privbuf);
- msg[10] = 0xD4000000 | 8;
- msg[11] = virt_to_bus(privbuf+2);
-
- ret=i2o_post_wait_mem(iop, msg, sizeof(msg), 120, privbuf, NULL);
-
- if(ret==-ETIMEDOUT)
- {
- printk(KERN_ERR "%s: SysTab setup timed out.\n", iop->name);
- }
- else if(ret<0)
- {
- printk(KERN_ERR "%s: Unable to set SysTab (status=%#x).\n",
- iop->name, -ret);
- kfree(privbuf);
- }
- else
- {
- dprintk(KERN_INFO "%s: SysTab set.\n", iop->name);
- kfree(privbuf);
- }
- i2o_status_get(iop); // Entered READY state
-
- return ret;
-
- }
-
-/*
- * Initialize I2O subsystem.
- */
-static void __init i2o_sys_init(void)
-{
- struct i2o_controller *iop, *niop = NULL;
-
- printk(KERN_INFO "Activating I2O controllers...\n");
- printk(KERN_INFO "This may take a few minutes if there are many devices\n");
-
- /* In INIT state, Activate IOPs */
- for (iop = i2o_controller_chain; iop; iop = niop) {
- dprintk(KERN_INFO "Calling i2o_activate_controller for %s...\n",
- iop->name);
- niop = iop->next;
- if (i2o_activate_controller(iop) < 0)
- i2o_delete_controller(iop);
- }
-
- /* Active IOPs in HOLD state */
-
-rebuild_sys_tab:
- if (i2o_controller_chain == NULL)
- return;
-
- /*
- * If build_sys_table fails, we kill everything and bail
- * as we can't init the IOPs w/o a system table
- */
- dprintk(KERN_INFO "i2o_core: Calling i2o_build_sys_table...\n");
- if (i2o_build_sys_table() < 0) {
- i2o_sys_shutdown();
- return;
- }
-
- /* If IOP don't get online, we need to rebuild the System table */
- for (iop = i2o_controller_chain; iop; iop = niop) {
- niop = iop->next;
- dprintk(KERN_INFO "Calling i2o_online_controller for %s...\n", iop->name);
- if (i2o_online_controller(iop) < 0) {
- i2o_delete_controller(iop);
- goto rebuild_sys_tab;
- }
- }
-
- /* Active IOPs now in OPERATIONAL state */
-
- /*
- * Register for status updates from all IOPs
- */
- for(iop = i2o_controller_chain; iop; iop=iop->next) {
-
- /* Create a kernel thread to deal with dynamic LCT updates */
- iop->lct_pid = kernel_thread(i2o_dyn_lct, iop, CLONE_SIGHAND);
-
- /* Update change ind on DLCT */
- iop->dlct->change_ind = iop->lct->change_ind;
-
- /* Start dynamic LCT updates */
- i2o_lct_notify(iop);
-
- /* Register for all events from IRTOS */
- i2o_event_register(iop, core_context, 0, 0, 0xFFFFFFFF);
- }
-}
-
-/**
- * i2o_sys_shutdown - shutdown I2O system
- *
- * Bring down each i2o controller and then return. Each controller
- * is taken through an orderly shutdown
- */
-
-static void i2o_sys_shutdown(void)
-{
- struct i2o_controller *iop, *niop;
-
- /* Delete all IOPs from the controller chain */
- /* that will reset all IOPs too */
-
- for (iop = i2o_controller_chain; iop; iop = niop) {
- niop = iop->next;
- i2o_delete_controller(iop);
- }
-}
-
-/**
- * i2o_activate_controller - bring controller up to HOLD
- * @iop: controller
- *
- * This function brings an I2O controller into HOLD state. The adapter
- * is reset if neccessary and then the queues and resource table
- * are read. -1 is returned on a failure, 0 on success.
- *
- */
-
-int i2o_activate_controller(struct i2o_controller *iop)
-{
- /* In INIT state, Wait Inbound Q to initialize (in i2o_status_get) */
- /* In READY state, Get status */
-
- if (i2o_status_get(iop) < 0) {
- printk(KERN_INFO "Unable to obtain status of %s, "
- "attempting a reset.\n", iop->name);
- if (i2o_reset_controller(iop) < 0)
- return -1;
- }
-
- if(iop->status_block->iop_state == ADAPTER_STATE_FAULTED) {
- printk(KERN_CRIT "%s: hardware fault\n", iop->name);
- return -1;
- }
-
- if (iop->status_block->i2o_version > I2OVER15) {
- printk(KERN_ERR "%s: Not running vrs. 1.5. of the I2O Specification.\n",
- iop->name);
- return -1;
- }
-
- if (iop->status_block->iop_state == ADAPTER_STATE_READY ||
- iop->status_block->iop_state == ADAPTER_STATE_OPERATIONAL ||
- iop->status_block->iop_state == ADAPTER_STATE_HOLD ||
- iop->status_block->iop_state == ADAPTER_STATE_FAILED)
- {
- dprintk(KERN_INFO "%s: Already running, trying to reset...\n",
- iop->name);
- if (i2o_reset_controller(iop) < 0)
- return -1;
- }
-
- if (i2o_init_outbound_q(iop) < 0)
- return -1;
-
- if (i2o_post_outbound_messages(iop))
- return -1;
-
- /* In HOLD state */
-
- if (i2o_hrt_get(iop) < 0)
- return -1;
-
- return 0;
-}
-
-
-/**
- * i2o_init_outbound_queue - setup the outbound queue
- * @c: controller
- *
- * Clear and (re)initialize IOP's outbound queue. Returns 0 on
- * success or a negative errno code on a failure.
- */
-
-int i2o_init_outbound_q(struct i2o_controller *c)
-{
- u8 *status;
- u32 m;
- u32 *msg;
- u32 time;
-
- dprintk(KERN_INFO "%s: Initializing Outbound Queue...\n", c->name);
- m=i2o_wait_message(c, "OutboundInit");
- if(m==0xFFFFFFFF)
- return -ETIMEDOUT;
- msg=(u32 *)(c->mem_offset+m);
-
- status = kmalloc(4,GFP_KERNEL);
- if (status==NULL) {
- printk(KERN_ERR "%s: Outbound Queue initialization failed - no free memory.\n",
- c->name);
- return -ENOMEM;
- }
- memset(status, 0, 4);
-
- msg[0]= EIGHT_WORD_MSG_SIZE| TRL_OFFSET_6;
- msg[1]= I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID;
- msg[2]= core_context;
- msg[3]= 0x0106; /* Transaction context */
- msg[4]= 4096; /* Host page frame size */
- /* Frame size is in words. Pick 128, its what everyone elses uses and
- other sizes break some adapters. */
- msg[5]= MSG_FRAME_SIZE<<16|0x80; /* Outbound msg frame size and Initcode */
- msg[6]= 0xD0000004; /* Simple SG LE, EOB */
- msg[7]= virt_to_bus(status);
-
- i2o_post_message(c,m);
-
- barrier();
- time=jiffies;
- while(status[0] < I2O_CMD_REJECTED)
- {
- if((jiffies-time)>=30*HZ)
- {
- if(status[0]==0x00)
- printk(KERN_ERR "%s: Ignored queue initialize request.\n",
- c->name);
- else
- printk(KERN_ERR "%s: Outbound queue initialize timeout.\n",
- c->name);
- kfree(status);
- return -ETIMEDOUT;
- }
- schedule();
- barrier();
- }
-
- if(status[0] != I2O_CMD_COMPLETED)
- {
- printk(KERN_ERR "%s: IOP outbound initialise failed.\n", c->name);
- kfree(status);
- return -ETIMEDOUT;
- }
-
- return 0;
-}
-
-/**
- * i2o_post_outbound_messages - fill message queue
- * @c: controller
- *
- * Allocate a message frame and load the messages into the IOP. The
- * function returns zero on success or a negative errno code on
- * failure.
- */
-
-int i2o_post_outbound_messages(struct i2o_controller *c)
-{
- int i;
- u32 m;
- /* Alloc space for IOP's outbound queue message frames */
-
- c->page_frame = kmalloc(MSG_POOL_SIZE, GFP_KERNEL);
- if(c->page_frame==NULL) {
- printk(KERN_CRIT "%s: Outbound Q initialize failed; out of memory.\n",
- c->name);
- return -ENOMEM;
- }
- m=virt_to_bus(c->page_frame);
-
- /* Post frames */
-
- for(i=0; i< NMBR_MSG_FRAMES; i++) {
- I2O_REPLY_WRITE32(c,m);
- mb();
- m += MSG_FRAME_SIZE;
- }
-
- return 0;
-}
-
-/*
- * Get the IOP's Logical Configuration Table
- */
-int i2o_lct_get(struct i2o_controller *c)
-{
- u32 msg[8];
- int ret, size = c->status_block->expected_lct_size;
-
- do {
- if (c->lct == NULL) {
- c->lct = kmalloc(size, GFP_KERNEL);
- if(c->lct == NULL) {
- printk(KERN_CRIT "%s: Lct Get failed. Out of memory.\n",
- c->name);
- return -ENOMEM;
- }
- }
- memset(c->lct, 0, size);
-
- msg[0] = EIGHT_WORD_MSG_SIZE|SGL_OFFSET_6;
- msg[1] = I2O_CMD_LCT_NOTIFY<<24 | HOST_TID<<12 | ADAPTER_TID;
- /* msg[2] filled in i2o_post_wait */
- msg[3] = 0;
- msg[4] = 0xFFFFFFFF; /* All devices */
- msg[5] = 0x00000000; /* Report now */
- msg[6] = 0xD0000000|size;
- msg[7] = virt_to_bus(c->lct);
-
- ret=i2o_post_wait_mem(c, msg, sizeof(msg), 120, c->lct, NULL);
-
- if(ret == -ETIMEDOUT)
- {
- c->lct = NULL;
- return ret;
- }
-
- if(ret<0)
- {
- printk(KERN_ERR "%s: LCT Get failed (status=%#x.\n",
- c->name, -ret);
- return ret;
- }
-
- if (c->lct->table_size << 2 > size) {
- size = c->lct->table_size << 2;
- kfree(c->lct);
- c->lct = NULL;
- }
- } while (c->lct == NULL);
-
- if ((ret=i2o_parse_lct(c)) < 0)
- return ret;
-
- return 0;
-}
-
-/*
- * Like above, but used for async notification. The main
- * difference is that we keep track of the CurrentChangeIndiicator
- * so that we only get updates when it actually changes.
- *
- */
-int i2o_lct_notify(struct i2o_controller *c)
-{
- u32 msg[8];
-
- msg[0] = EIGHT_WORD_MSG_SIZE|SGL_OFFSET_6;
- msg[1] = I2O_CMD_LCT_NOTIFY<<24 | HOST_TID<<12 | ADAPTER_TID;
- msg[2] = core_context;
- msg[3] = 0xDEADBEEF;
- msg[4] = 0xFFFFFFFF; /* All devices */
- msg[5] = c->dlct->change_ind+1; /* Next change */
- msg[6] = 0xD0000000|8192;
- msg[7] = virt_to_bus(c->dlct);
-
- return i2o_post_this(c, msg, sizeof(msg));
-}
-
-/*
- * Bring a controller online into OPERATIONAL state.
- */
-
-int i2o_online_controller(struct i2o_controller *iop)
-{
- u32 v;
-
- if (i2o_systab_send(iop) < 0)
- return -1;
-
- /* In READY state */
-
- dprintk(KERN_INFO "%s: Attempting to enable...\n", iop->name);
- if (i2o_enable_controller(iop) < 0)
- return -1;
-
- /* In OPERATIONAL state */
-
- dprintk(KERN_INFO "%s: Attempting to get/parse lct...\n", iop->name);
- if (i2o_lct_get(iop) < 0)
- return -1;
-
- /* Check battery status */
-
- iop->battery = 0;
- if(i2o_query_scalar(iop, ADAPTER_TID, 0x0000, 4, &v, 4)>=0)
- {
- if(v&16)
- iop->battery = 1;
- }
-
- return 0;
-}
-
-/*
- * Build system table
- *
- * The system table contains information about all the IOPs in the
- * system (duh) and is used by the Executives on the IOPs to establish
- * peer2peer connections. We're not supporting peer2peer at the moment,
- * but this will be needed down the road for things like lan2lan forwarding.
- */
-static int i2o_build_sys_table(void)
-{
- struct i2o_controller *iop = NULL;
- struct i2o_controller *niop = NULL;
- int count = 0;
-
- sys_tbl_len = sizeof(struct i2o_sys_tbl) + // Header + IOPs
- (i2o_num_controllers) *
- sizeof(struct i2o_sys_tbl_entry);
-
- if(sys_tbl)
- kfree(sys_tbl);
-
- sys_tbl = kmalloc(sys_tbl_len, GFP_KERNEL);
- if(!sys_tbl) {
- printk(KERN_CRIT "SysTab Set failed. Out of memory.\n");
- return -ENOMEM;
- }
- memset((void*)sys_tbl, 0, sys_tbl_len);
-
- sys_tbl->num_entries = i2o_num_controllers;
- sys_tbl->version = I2OVERSION; /* TODO: Version 2.0 */
- sys_tbl->change_ind = sys_tbl_ind++;
-
- for(iop = i2o_controller_chain; iop; iop = niop)
- {
- niop = iop->next;
-
- /*
- * Get updated IOP state so we have the latest information
- *
- * We should delete the controller at this point if it
- * doesn't respond since if it's not on the system table
- * it is techninically not part of the I2O subsyßtem...
- */
- if(i2o_status_get(iop)) {
- printk(KERN_ERR "%s: Deleting b/c could not get status while"
- "attempting to build system table\n", iop->name);
- i2o_delete_controller(iop);
- sys_tbl->num_entries--;
- continue; // try the next one
- }
-
- sys_tbl->iops[count].org_id = iop->status_block->org_id;
- sys_tbl->iops[count].iop_id = iop->unit + 2;
- sys_tbl->iops[count].seg_num = 0;
- sys_tbl->iops[count].i2o_version =
- iop->status_block->i2o_version;
- sys_tbl->iops[count].iop_state =
- iop->status_block->iop_state;
- sys_tbl->iops[count].msg_type =
- iop->status_block->msg_type;
- sys_tbl->iops[count].frame_size =
- iop->status_block->inbound_frame_size;
- sys_tbl->iops[count].last_changed = sys_tbl_ind - 1; // ??
- sys_tbl->iops[count].iop_capabilities =
- iop->status_block->iop_capabilities;
- sys_tbl->iops[count].inbound_low =
- (u32)virt_to_bus(iop->post_port);
- sys_tbl->iops[count].inbound_high = 0; // TODO: 64-bit support
-
- count++;
- }
-
-#ifdef DRIVERDEBUG
-{
- u32 *table;
- table = (u32*)sys_tbl;
- for(count = 0; count < (sys_tbl_len >>2); count++)
- printk(KERN_INFO "sys_tbl[%d] = %0#10x\n", count, table[count]);
-}
-#endif
-
- return 0;
-}
-
-
-/*
- * Run time support routines
- */
-
-/*
- * Generic "post and forget" helpers. This is less efficient - we do
- * a memcpy for example that isnt strictly needed, but for most uses
- * this is simply not worth optimising
- */
-
-int i2o_post_this(struct i2o_controller *c, u32 *data, int len)
-{
- u32 m;
- u32 *msg;
- unsigned long t=jiffies;
-
- do
- {
- mb();
- m = I2O_POST_READ32(c);
- }
- while(m==0xFFFFFFFF && (jiffies-t)<HZ);
-
- if(m==0xFFFFFFFF)
- {
- printk(KERN_ERR "%s: Timeout waiting for message frame!\n",
- c->name);
- return -ETIMEDOUT;
- }
- msg = (u32 *)(c->mem_offset + m);
- memcpy_toio(msg, data, len);
- i2o_post_message(c,m);
- return 0;
-}
-
-/**
- * i2o_post_wait_mem - I2O query/reply with DMA buffers
- * @c: controller
- * @msg: message to send
- * @len: length of message
- * @timeout: time in seconds to wait
- * @mem1: attached memory buffer 1
- * @mem2: attached memory buffer 2
- *
- * This core API allows an OSM to post a message and then be told whether
- * or not the system received a successful reply.
- *
- * If the message times out then the value '-ETIMEDOUT' is returned. This
- * is a special case. In this situation the message may (should) complete
- * at an indefinite time in the future. When it completes it will use the
- * memory buffers attached to the request. If -ETIMEDOUT is returned then
- * the memory buffers must not be freed. Instead the event completion will
- * free them for you. In all other cases the buffers are your problem.
- *
- * Pass NULL for unneeded buffers.
- */
-
-int i2o_post_wait_mem(struct i2o_controller *c, u32 *msg, int len, int timeout, void *mem1, void *mem2)
-{
- DECLARE_WAIT_QUEUE_HEAD(wq_i2o_post);
- int complete = 0;
- int status;
- unsigned long flags = 0;
- struct i2o_post_wait_data *wait_data =
- kmalloc(sizeof(struct i2o_post_wait_data), GFP_KERNEL);
-
- if(!wait_data)
- return -ENOMEM;
-
- /*
- * Create a new notification object
- */
- wait_data->status = &status;
- wait_data->complete = &complete;
- wait_data->mem[0] = mem1;
- wait_data->mem[1] = mem2;
- /*
- * Queue the event with its unique id
- */
- spin_lock_irqsave(&post_wait_lock, flags);
-
- wait_data->next = post_wait_queue;
- post_wait_queue = wait_data;
- wait_data->id = (++post_wait_id) & 0x7fff;
- wait_data->wq = &wq_i2o_post;
-
- spin_unlock_irqrestore(&post_wait_lock, flags);
-
- /*
- * Fill in the message id
- */
-
- msg[2] = 0x80000000|(u32)core_context|((u32)wait_data->id<<16);
-
- /*
- * Post the message to the controller. At some point later it
- * will return. If we time out before it returns then
- * complete will be zero. From the point post_this returns
- * the wait_data may have been deleted.
- */
- if ((status = i2o_post_this(c, msg, len))==0) {
- sleep_on_timeout(&wq_i2o_post, HZ * timeout);
- }
- else
- return -EIO;
-
- if(signal_pending(current))
- status = -EINTR;
-
- spin_lock_irqsave(&post_wait_lock, flags);
- barrier(); /* Be sure we see complete as it is locked */
- if(!complete)
- {
- /*
- * Mark the entry dead. We cannot remove it. This is important.
- * When it does terminate (which it must do if the controller hasnt
- * died..) then it will otherwise scribble on stuff.
- * !complete lets us safely check if the entry is still
- * allocated and thus we can write into it
- */
- wait_data->wq = NULL;
- status = -ETIMEDOUT;
- }
- else
- {
- /* Debugging check - remove me soon */
- if(status == -ETIMEDOUT)
- {
- printk("TIMEDOUT BUG!\n");
- status = -EIO;
- }
- }
- /* And the wait_data is not leaked either! */
- spin_unlock_irqrestore(&post_wait_lock, flags);
- return status;
-}
-
-/**
- * i2o_post_wait - I2O query/reply
- * @c: controller
- * @msg: message to send
- * @len: length of message
- * @timeout: time in seconds to wait
- *
- * This core API allows an OSM to post a message and then be told whether
- * or not the system received a successful reply.
- */
-
-int i2o_post_wait(struct i2o_controller *c, u32 *msg, int len, int timeout)
-{
- return i2o_post_wait_mem(c, msg, len, timeout, NULL, NULL);
-}
-
-/*
- * i2o_post_wait is completed and we want to wake up the
- * sleeping proccess. Called by core's reply handler.
- */
-
-static void i2o_post_wait_complete(u32 context, int status)
-{
- struct i2o_post_wait_data **p1, *q;
- unsigned long flags;
-
- /*
- * We need to search through the post_wait
- * queue to see if the given message is still
- * outstanding. If not, it means that the IOP
- * took longer to respond to the message than we
- * had allowed and timer has already expired.
- * Not much we can do about that except log
- * it for debug purposes, increase timeout, and recompile
- *
- * Lock needed to keep anyone from moving queue pointers
- * around while we're looking through them.
- */
-
- spin_lock_irqsave(&post_wait_lock, flags);
-
- for(p1 = &post_wait_queue; *p1!=NULL; p1 = &((*p1)->next))
- {
- q = (*p1);
- if(q->id == ((context >> 16) & 0x7fff)) {
- /*
- * Delete it
- */
-
- *p1 = q->next;
-
- /*
- * Live or dead ?
- */
-
- if(q->wq)
- {
- /* Live entry - wakeup and set status */
- *q->status = status;
- *q->complete = 1;
- wake_up(q->wq);
- }
- else
- {
- /*
- * Free resources. Caller is dead
- */
- if(q->mem[0])
- kfree(q->mem[0]);
- if(q->mem[1])
- kfree(q->mem[1]);
- printk(KERN_WARNING "i2o_post_wait event completed after timeout.\n");
- }
- kfree(q);
- spin_unlock(&post_wait_lock);
- return;
- }
- }
- spin_unlock(&post_wait_lock);
-
- printk(KERN_DEBUG "i2o_post_wait: Bogus reply!\n");
-}
-
-/* Issue UTIL_PARAMS_GET or UTIL_PARAMS_SET
- *
- * This function can be used for all UtilParamsGet/Set operations.
- * The OperationList is given in oplist-buffer,
- * and results are returned in reslist-buffer.
- * Note that the minimum sized reslist is 8 bytes and contains
- * ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
- */
-int i2o_issue_params(int cmd, struct i2o_controller *iop, int tid,
- void *oplist, int oplen, void *reslist, int reslen)
-{
- u32 msg[9];
- u32 *res32 = (u32*)reslist;
- u32 *restmp = (u32*)reslist;
- int len = 0;
- int i = 0;
- int wait_status;
- u32 *opmem, *resmem;
-
- /* Get DMAable memory */
- opmem = kmalloc(oplen, GFP_KERNEL);
- if(opmem == NULL)
- return -ENOMEM;
- memcpy(opmem, oplist, oplen);
-
- resmem = kmalloc(reslen, GFP_KERNEL);
- if(resmem == NULL)
- {
- kfree(opmem);
- return -ENOMEM;
- }
-
- msg[0] = NINE_WORD_MSG_SIZE | SGL_OFFSET_5;
- msg[1] = cmd << 24 | HOST_TID << 12 | tid;
- msg[3] = 0;
- msg[4] = 0;
- msg[5] = 0x54000000 | oplen; /* OperationList */
- msg[6] = virt_to_bus(opmem);
- msg[7] = 0xD0000000 | reslen; /* ResultList */
- msg[8] = virt_to_bus(resmem);
-
- wait_status = i2o_post_wait_mem(iop, msg, sizeof(msg), 10, opmem, resmem);
-
- /*
- * This only looks like a memory leak - don't "fix" it.
- */
- if(wait_status == -ETIMEDOUT)
- return wait_status;
-
- /* Query failed */
- if(wait_status != 0)
- {
- kfree(resmem);
- kfree(opmem);
- return wait_status;
- }
-
- memcpy(reslist, resmem, reslen);
- /*
- * Calculate number of bytes of Result LIST
- * We need to loop through each Result BLOCK and grab the length
- */
- restmp = res32 + 1;
- len = 1;
- for(i = 0; i < (res32[0]&0X0000FFFF); i++)
- {
- if(restmp[0]&0x00FF0000) /* BlockStatus != SUCCESS */
- {
- printk(KERN_WARNING "%s - Error:\n ErrorInfoSize = 0x%02x, "
- "BlockStatus = 0x%02x, BlockSize = 0x%04x\n",
- (cmd == I2O_CMD_UTIL_PARAMS_SET) ? "PARAMS_SET"
- : "PARAMS_GET",
- res32[1]>>24, (res32[1]>>16)&0xFF, res32[1]&0xFFFF);
-
- /*
- * If this is the only request,than we return an error
- */
- if((res32[0]&0x0000FFFF) == 1)
- {
- return -((res32[1] >> 16) & 0xFF); /* -BlockStatus */
- }
- }
- len += restmp[0] & 0x0000FFFF; /* Length of res BLOCK */
- restmp += restmp[0] & 0x0000FFFF; /* Skip to next BLOCK */
- }
- return (len << 2); /* bytes used by result list */
-}
-
-/*
- * Query one scalar group value or a whole scalar group.
- */
-int i2o_query_scalar(struct i2o_controller *iop, int tid,
- int group, int field, void *buf, int buflen)
-{
- u16 opblk[] = { 1, 0, I2O_PARAMS_FIELD_GET, group, 1, field };
- u8 resblk[8+buflen]; /* 8 bytes for header */
- int size;
-
- if (field == -1) /* whole group */
- opblk[4] = -1;
-
- size = i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET, iop, tid,
- opblk, sizeof(opblk), resblk, sizeof(resblk));
-
- memcpy(buf, resblk+8, buflen); /* cut off header */
-
- if(size>buflen)
- return buflen;
- return size;
-}
-
-/*
- * Set a scalar group value or a whole group.
- */
-int i2o_set_scalar(struct i2o_controller *iop, int tid,
- int group, int field, void *buf, int buflen)
-{
- u16 *opblk;
- u8 resblk[8+buflen]; /* 8 bytes for header */
- int size;
-
- opblk = kmalloc(buflen+64, GFP_KERNEL);
- if (opblk == NULL)
- {
- printk(KERN_ERR "i2o: no memory for operation buffer.\n");
- return -ENOMEM;
- }
-
- opblk[0] = 1; /* operation count */
- opblk[1] = 0; /* pad */
- opblk[2] = I2O_PARAMS_FIELD_SET;
- opblk[3] = group;
-
- if(field == -1) { /* whole group */
- opblk[4] = -1;
- memcpy(opblk+5, buf, buflen);
- }
- else /* single field */
- {
- opblk[4] = 1;
- opblk[5] = field;
- memcpy(opblk+6, buf, buflen);
- }
-
- size = i2o_issue_params(I2O_CMD_UTIL_PARAMS_SET, iop, tid,
- opblk, 12+buflen, resblk, sizeof(resblk));
-
- kfree(opblk);
- if(size>buflen)
- return buflen;
- return size;
-}
-
-/*
- * if oper == I2O_PARAMS_TABLE_GET, get from all rows
- * if fieldcount == -1 return all fields
- * ibuf and ibuflen are unused (use NULL, 0)
- * else return specific fields
- * ibuf contains fieldindexes
- *
- * if oper == I2O_PARAMS_LIST_GET, get from specific rows
- * if fieldcount == -1 return all fields
- * ibuf contains rowcount, keyvalues
- * else return specific fields
- * fieldcount is # of fieldindexes
- * ibuf contains fieldindexes, rowcount, keyvalues
- *
- * You could also use directly function i2o_issue_params().
- */
-int i2o_query_table(int oper, struct i2o_controller *iop, int tid, int group,
- int fieldcount, void *ibuf, int ibuflen,
- void *resblk, int reslen)
-{
- u16 *opblk;
- int size;
-
- opblk = kmalloc(10 + ibuflen, GFP_KERNEL);
- if (opblk == NULL)
- {
- printk(KERN_ERR "i2o: no memory for query buffer.\n");
- return -ENOMEM;
- }
-
- opblk[0] = 1; /* operation count */
- opblk[1] = 0; /* pad */
- opblk[2] = oper;
- opblk[3] = group;
- opblk[4] = fieldcount;
- memcpy(opblk+5, ibuf, ibuflen); /* other params */
-
- size = i2o_issue_params(I2O_CMD_UTIL_PARAMS_GET,iop, tid,
- opblk, 10+ibuflen, resblk, reslen);
-
- kfree(opblk);
- if(size>reslen)
- return reslen;
- return size;
-}
-
-/*
- * Clear table group, i.e. delete all rows.
- */
-int i2o_clear_table(struct i2o_controller *iop, int tid, int group)
-{
- u16 opblk[] = { 1, 0, I2O_PARAMS_TABLE_CLEAR, group };
- u8 resblk[32]; /* min 8 bytes for result header */
-
- return i2o_issue_params(I2O_CMD_UTIL_PARAMS_SET, iop, tid,
- opblk, sizeof(opblk), resblk, sizeof(resblk));
-}
-
-/*
- * Add a new row into a table group.
- *
- * if fieldcount==-1 then we add whole rows
- * buf contains rowcount, keyvalues
- * else just specific fields are given, rest use defaults
- * buf contains fieldindexes, rowcount, keyvalues
- */
-int i2o_row_add_table(struct i2o_controller *iop, int tid,
- int group, int fieldcount, void *buf, int buflen)
-{
- u16 *opblk;
- u8 resblk[32]; /* min 8 bytes for header */
- int size;
-
- opblk = kmalloc(buflen+64, GFP_KERNEL);
- if (opblk == NULL)
- {
- printk(KERN_ERR "i2o: no memory for operation buffer.\n");
- return -ENOMEM;
- }
-
- opblk[0] = 1; /* operation count */
- opblk[1] = 0; /* pad */
- opblk[2] = I2O_PARAMS_ROW_ADD;
- opblk[3] = group;
- opblk[4] = fieldcount;
- memcpy(opblk+5, buf, buflen);
-
- size = i2o_issue_params(I2O_CMD_UTIL_PARAMS_SET, iop, tid,
- opblk, 10+buflen, resblk, sizeof(resblk));
-
- kfree(opblk);
- if(size>buflen)
- return buflen;
- return size;
-}
-
-
-/*
- * Used for error reporting/debugging purposes.
- * Following fail status are common to all classes.
- * The preserved message must be handled in the reply handler.
- */
-void i2o_report_fail_status(u8 req_status, u32* msg)
-{
- static char *FAIL_STATUS[] = {
- "0x80", /* not used */
- "SERVICE_SUSPENDED", /* 0x81 */
- "SERVICE_TERMINATED", /* 0x82 */
- "CONGESTION",
- "FAILURE",
- "STATE_ERROR",
- "TIME_OUT",
- "ROUTING_FAILURE",
- "INVALID_VERSION",
- "INVALID_OFFSET",
- "INVALID_MSG_FLAGS",
- "FRAME_TOO_SMALL",
- "FRAME_TOO_LARGE",
- "INVALID_TARGET_ID",
- "INVALID_INITIATOR_ID",
- "INVALID_INITIATOR_CONTEX", /* 0x8F */
- "UNKNOWN_FAILURE" /* 0xFF */
- };
-
- if (req_status == I2O_FSC_TRANSPORT_UNKNOWN_FAILURE)
- printk("TRANSPORT_UNKNOWN_FAILURE (%0#2x)\n.", req_status);
- else
- printk("TRANSPORT_%s.\n", FAIL_STATUS[req_status & 0x0F]);
-
- /* Dump some details */
-
- printk(KERN_ERR " InitiatorId = %d, TargetId = %d\n",
- (msg[1] >> 12) & 0xFFF, msg[1] & 0xFFF);
- printk(KERN_ERR " LowestVersion = 0x%02X, HighestVersion = 0x%02X\n",
- (msg[4] >> 8) & 0xFF, msg[4] & 0xFF);
- printk(KERN_ERR " FailingHostUnit = 0x%04X, FailingIOP = 0x%03X\n",
- msg[5] >> 16, msg[5] & 0xFFF);
-
- printk(KERN_ERR " Severity: 0x%02X ", (msg[4] >> 16) & 0xFF);
- if (msg[4] & (1<<16))
- printk("(FormatError), "
- "this msg can never be delivered/processed.\n");
- if (msg[4] & (1<<17))
- printk("(PathError), "
- "this msg can no longer be delivered/processed.\n");
- if (msg[4] & (1<<18))
- printk("(PathState), "
- "the system state does not allow delivery.\n");
- if (msg[4] & (1<<19))
- printk("(Congestion), resources temporarily not available;"
- "do not retry immediately.\n");
-}
-
-/*
- * Used for error reporting/debugging purposes.
- * Following reply status are common to all classes.
- */
-void i2o_report_common_status(u8 req_status)
-{
- static char *REPLY_STATUS[] = {
- "SUCCESS",
- "ABORT_DIRTY",
- "ABORT_NO_DATA_TRANSFER",
- "ABORT_PARTIAL_TRANSFER",
- "ERROR_DIRTY",
- "ERROR_NO_DATA_TRANSFER",
- "ERROR_PARTIAL_TRANSFER",
- "PROCESS_ABORT_DIRTY",
- "PROCESS_ABORT_NO_DATA_TRANSFER",
- "PROCESS_ABORT_PARTIAL_TRANSFER",
- "TRANSACTION_ERROR",
- "PROGRESS_REPORT"
- };
-
- if (req_status > I2O_REPLY_STATUS_PROGRESS_REPORT)
- printk("RequestStatus = %0#2x", req_status);
- else
- printk("%s", REPLY_STATUS[req_status]);
-}
-
-/*
- * Used for error reporting/debugging purposes.
- * Following detailed status are valid for executive class,
- * utility class, DDM class and for transaction error replies.
- */
-static void i2o_report_common_dsc(u16 detailed_status)
-{
- static char *COMMON_DSC[] = {
- "SUCCESS",
- "0x01", // not used
- "BAD_KEY",
- "TCL_ERROR",
- "REPLY_BUFFER_FULL",
- "NO_SUCH_PAGE",
- "INSUFFICIENT_RESOURCE_SOFT",
- "INSUFFICIENT_RESOURCE_HARD",
- "0x08", // not used
- "CHAIN_BUFFER_TOO_LARGE",
- "UNSUPPORTED_FUNCTION",
- "DEVICE_LOCKED",
- "DEVICE_RESET",
- "INAPPROPRIATE_FUNCTION",
- "INVALID_INITIATOR_ADDRESS",
- "INVALID_MESSAGE_FLAGS",
- "INVALID_OFFSET",
- "INVALID_PARAMETER",
- "INVALID_REQUEST",
- "INVALID_TARGET_ADDRESS",
- "MESSAGE_TOO_LARGE",
- "MESSAGE_TOO_SMALL",
- "MISSING_PARAMETER",
- "TIMEOUT",
- "UNKNOWN_ERROR",
- "UNKNOWN_FUNCTION",
- "UNSUPPORTED_VERSION",
- "DEVICE_BUSY",
- "DEVICE_NOT_AVAILABLE"
- };
-
- if (detailed_status > I2O_DSC_DEVICE_NOT_AVAILABLE)
- printk(" / DetailedStatus = %0#4x.\n", detailed_status);
- else
- printk(" / %s.\n", COMMON_DSC[detailed_status]);
-}
-
-/*
- * Used for error reporting/debugging purposes
- */
-static void i2o_report_lan_dsc(u16 detailed_status)
-{
- static char *LAN_DSC[] = { // Lan detailed status code strings
- "SUCCESS",
- "DEVICE_FAILURE",
- "DESTINATION_NOT_FOUND",
- "TRANSMIT_ERROR",
- "TRANSMIT_ABORTED",
- "RECEIVE_ERROR",
- "RECEIVE_ABORTED",
- "DMA_ERROR",
- "BAD_PACKET_DETECTED",
- "OUT_OF_MEMORY",
- "BUCKET_OVERRUN",
- "IOP_INTERNAL_ERROR",
- "CANCELED",
- "INVALID_TRANSACTION_CONTEXT",
- "DEST_ADDRESS_DETECTED",
- "DEST_ADDRESS_OMITTED",
- "PARTIAL_PACKET_RETURNED",
- "TEMP_SUSPENDED_STATE", // last Lan detailed status code
- "INVALID_REQUEST" // general detailed status code
- };
-
- if (detailed_status > I2O_DSC_INVALID_REQUEST)
- printk(" / %0#4x.\n", detailed_status);
- else
- printk(" / %s.\n", LAN_DSC[detailed_status]);
-}
-
-/*
- * Used for error reporting/debugging purposes
- */
-static void i2o_report_util_cmd(u8 cmd)
-{
- switch (cmd) {
- case I2O_CMD_UTIL_NOP:
- printk("UTIL_NOP, ");
- break;
- case I2O_CMD_UTIL_ABORT:
- printk("UTIL_ABORT, ");
- break;
- case I2O_CMD_UTIL_CLAIM:
- printk("UTIL_CLAIM, ");
- break;
- case I2O_CMD_UTIL_RELEASE:
- printk("UTIL_CLAIM_RELEASE, ");
- break;
- case I2O_CMD_UTIL_CONFIG_DIALOG:
- printk("UTIL_CONFIG_DIALOG, ");
- break;
- case I2O_CMD_UTIL_DEVICE_RESERVE:
- printk("UTIL_DEVICE_RESERVE, ");
- break;
- case I2O_CMD_UTIL_DEVICE_RELEASE:
- printk("UTIL_DEVICE_RELEASE, ");
- break;
- case I2O_CMD_UTIL_EVT_ACK:
- printk("UTIL_EVENT_ACKNOWLEDGE, ");
- break;
- case I2O_CMD_UTIL_EVT_REGISTER:
- printk("UTIL_EVENT_REGISTER, ");
- break;
- case I2O_CMD_UTIL_LOCK:
- printk("UTIL_LOCK, ");
- break;
- case I2O_CMD_UTIL_LOCK_RELEASE:
- printk("UTIL_LOCK_RELEASE, ");
- break;
- case I2O_CMD_UTIL_PARAMS_GET:
- printk("UTIL_PARAMS_GET, ");
- break;
- case I2O_CMD_UTIL_PARAMS_SET:
- printk("UTIL_PARAMS_SET, ");
- break;
- case I2O_CMD_UTIL_REPLY_FAULT_NOTIFY:
- printk("UTIL_REPLY_FAULT_NOTIFY, ");
- break;
- default:
- printk("Cmd = %0#2x, ",cmd);
- }
-}
-
-/*
- * Used for error reporting/debugging purposes
- */
-static void i2o_report_exec_cmd(u8 cmd)
-{
- switch (cmd) {
- case I2O_CMD_ADAPTER_ASSIGN:
- printk("EXEC_ADAPTER_ASSIGN, ");
- break;
- case I2O_CMD_ADAPTER_READ:
- printk("EXEC_ADAPTER_READ, ");
- break;
- case I2O_CMD_ADAPTER_RELEASE:
- printk("EXEC_ADAPTER_RELEASE, ");
- break;
- case I2O_CMD_BIOS_INFO_SET:
- printk("EXEC_BIOS_INFO_SET, ");
- break;
- case I2O_CMD_BOOT_DEVICE_SET:
- printk("EXEC_BOOT_DEVICE_SET, ");
- break;
- case I2O_CMD_CONFIG_VALIDATE:
- printk("EXEC_CONFIG_VALIDATE, ");
- break;
- case I2O_CMD_CONN_SETUP:
- printk("EXEC_CONN_SETUP, ");
- break;
- case I2O_CMD_DDM_DESTROY:
- printk("EXEC_DDM_DESTROY, ");
- break;
- case I2O_CMD_DDM_ENABLE:
- printk("EXEC_DDM_ENABLE, ");
- break;
- case I2O_CMD_DDM_QUIESCE:
- printk("EXEC_DDM_QUIESCE, ");
- break;
- case I2O_CMD_DDM_RESET:
- printk("EXEC_DDM_RESET, ");
- break;
- case I2O_CMD_DDM_SUSPEND:
- printk("EXEC_DDM_SUSPEND, ");
- break;
- case I2O_CMD_DEVICE_ASSIGN:
- printk("EXEC_DEVICE_ASSIGN, ");
- break;
- case I2O_CMD_DEVICE_RELEASE:
- printk("EXEC_DEVICE_RELEASE, ");
- break;
- case I2O_CMD_HRT_GET:
- printk("EXEC_HRT_GET, ");
- break;
- case I2O_CMD_ADAPTER_CLEAR:
- printk("EXEC_IOP_CLEAR, ");
- break;
- case I2O_CMD_ADAPTER_CONNECT:
- printk("EXEC_IOP_CONNECT, ");
- break;
- case I2O_CMD_ADAPTER_RESET:
- printk("EXEC_IOP_RESET, ");
- break;
- case I2O_CMD_LCT_NOTIFY:
- printk("EXEC_LCT_NOTIFY, ");
- break;
- case I2O_CMD_OUTBOUND_INIT:
- printk("EXEC_OUTBOUND_INIT, ");
- break;
- case I2O_CMD_PATH_ENABLE:
- printk("EXEC_PATH_ENABLE, ");
- break;
- case I2O_CMD_PATH_QUIESCE:
- printk("EXEC_PATH_QUIESCE, ");
- break;
- case I2O_CMD_PATH_RESET:
- printk("EXEC_PATH_RESET, ");
- break;
- case I2O_CMD_STATIC_MF_CREATE:
- printk("EXEC_STATIC_MF_CREATE, ");
- break;
- case I2O_CMD_STATIC_MF_RELEASE:
- printk("EXEC_STATIC_MF_RELEASE, ");
- break;
- case I2O_CMD_STATUS_GET:
- printk("EXEC_STATUS_GET, ");
- break;
- case I2O_CMD_SW_DOWNLOAD:
- printk("EXEC_SW_DOWNLOAD, ");
- break;
- case I2O_CMD_SW_UPLOAD:
- printk("EXEC_SW_UPLOAD, ");
- break;
- case I2O_CMD_SW_REMOVE:
- printk("EXEC_SW_REMOVE, ");
- break;
- case I2O_CMD_SYS_ENABLE:
- printk("EXEC_SYS_ENABLE, ");
- break;
- case I2O_CMD_SYS_MODIFY:
- printk("EXEC_SYS_MODIFY, ");
- break;
- case I2O_CMD_SYS_QUIESCE:
- printk("EXEC_SYS_QUIESCE, ");
- break;
- case I2O_CMD_SYS_TAB_SET:
- printk("EXEC_SYS_TAB_SET, ");
- break;
- default:
- printk("Cmd = %#02x, ",cmd);
- }
-}
-
-/*
- * Used for error reporting/debugging purposes
- */
-static void i2o_report_lan_cmd(u8 cmd)
-{
- switch (cmd) {
- case LAN_PACKET_SEND:
- printk("LAN_PACKET_SEND, ");
- break;
- case LAN_SDU_SEND:
- printk("LAN_SDU_SEND, ");
- break;
- case LAN_RECEIVE_POST:
- printk("LAN_RECEIVE_POST, ");
- break;
- case LAN_RESET:
- printk("LAN_RESET, ");
- break;
- case LAN_SUSPEND:
- printk("LAN_SUSPEND, ");
- break;
- default:
- printk("Cmd = %0#2x, ",cmd);
- }
-}
-
-/*
- * Used for error reporting/debugging purposes.
- * Report Cmd name, Request status, Detailed Status.
- */
-void i2o_report_status(const char *severity, const char *str, u32 *msg)
-{
- u8 cmd = (msg[1]>>24)&0xFF;
- u8 req_status = (msg[4]>>24)&0xFF;
- u16 detailed_status = msg[4]&0xFFFF;
- struct i2o_handler *h = i2o_handlers[msg[2] & (MAX_I2O_MODULES-1)];
-
- printk("%s%s: ", severity, str);
-
- if (cmd < 0x1F) // Utility cmd
- i2o_report_util_cmd(cmd);
-
- else if (cmd >= 0xA0 && cmd <= 0xEF) // Executive cmd
- i2o_report_exec_cmd(cmd);
-
- else if (h->class == I2O_CLASS_LAN && cmd >= 0x30 && cmd <= 0x3F)
- i2o_report_lan_cmd(cmd); // LAN cmd
- else
- printk("Cmd = %0#2x, ", cmd); // Other cmds
-
- if (msg[0] & MSG_FAIL) {
- i2o_report_fail_status(req_status, msg);
- return;
- }
-
- i2o_report_common_status(req_status);
-
- if (cmd < 0x1F || (cmd >= 0xA0 && cmd <= 0xEF))
- i2o_report_common_dsc(detailed_status);
- else if (h->class == I2O_CLASS_LAN && cmd >= 0x30 && cmd <= 0x3F)
- i2o_report_lan_dsc(detailed_status);
- else
- printk(" / DetailedStatus = %0#4x.\n", detailed_status);
-}
-
-/* Used to dump a message to syslog during debugging */
-void i2o_dump_message(u32 *msg)
-{
-#ifdef DRIVERDEBUG
- int i;
- printk(KERN_INFO "Dumping I2O message size %d @ %p\n",
- msg[0]>>16&0xffff, msg);
- for(i = 0; i < ((msg[0]>>16)&0xffff); i++)
- printk(KERN_INFO " msg[%d] = %0#10x\n", i, msg[i]);
-#endif
-}
-
-/*
- * I2O reboot/shutdown notification.
- *
- * - Call each OSM's reboot notifier (if one exists)
- * - Quiesce each IOP in the system
- *
- * Each IOP has to be quiesced before we can ensure that the system
- * can be properly shutdown as a transaction that has already been
- * acknowledged still needs to be placed in permanent store on the IOP.
- * The SysQuiesce causes the IOP to force all HDMs to complete their
- * transactions before returning, so only at that point is it safe
- *
- */
-static int i2o_reboot_event(struct notifier_block *n, unsigned long code, void
-*p)
-{
- int i = 0;
- struct i2o_controller *c = NULL;
-
- if(code != SYS_RESTART && code != SYS_HALT && code != SYS_POWER_OFF)
- return NOTIFY_DONE;
-
- printk(KERN_INFO "Shutting down I2O system.\n");
- printk(KERN_INFO
- " This could take a few minutes if there are many devices attached\n");
-
- for(i = 0; i < MAX_I2O_MODULES; i++)
- {
- if(i2o_handlers[i] && i2o_handlers[i]->reboot_notify)
- i2o_handlers[i]->reboot_notify();
- }
-
- for(c = i2o_controller_chain; c; c = c->next)
- {
- if(i2o_quiesce_controller(c))
- {
- printk(KERN_WARNING "i2o: Could not quiesce %s." "
- Verify setup on next system power up.\n", c->name);
- }
- }
-
- printk(KERN_INFO "I2O system down.\n");
- return NOTIFY_DONE;
-}
-
-
-EXPORT_SYMBOL(i2o_controller_chain);
-EXPORT_SYMBOL(i2o_num_controllers);
-EXPORT_SYMBOL(i2o_find_controller);
-EXPORT_SYMBOL(i2o_unlock_controller);
-EXPORT_SYMBOL(i2o_status_get);
-
-EXPORT_SYMBOL(i2o_install_handler);
-EXPORT_SYMBOL(i2o_remove_handler);
-
-EXPORT_SYMBOL(i2o_claim_device);
-EXPORT_SYMBOL(i2o_release_device);
-EXPORT_SYMBOL(i2o_device_notify_on);
-EXPORT_SYMBOL(i2o_device_notify_off);
-
-EXPORT_SYMBOL(i2o_post_this);
-EXPORT_SYMBOL(i2o_post_wait);
-EXPORT_SYMBOL(i2o_post_wait_mem);
-
-EXPORT_SYMBOL(i2o_query_scalar);
-EXPORT_SYMBOL(i2o_set_scalar);
-EXPORT_SYMBOL(i2o_query_table);
-EXPORT_SYMBOL(i2o_clear_table);
-EXPORT_SYMBOL(i2o_row_add_table);
-EXPORT_SYMBOL(i2o_issue_params);
-
-EXPORT_SYMBOL(i2o_event_register);
-EXPORT_SYMBOL(i2o_event_ack);
-
-EXPORT_SYMBOL(i2o_report_status);
-EXPORT_SYMBOL(i2o_dump_message);
-
-EXPORT_SYMBOL(i2o_get_class_name);
-
-#ifdef MODULE
-
-MODULE_AUTHOR("Red Hat Software");
-MODULE_DESCRIPTION("I2O Core");
-
-
-int init_module(void)
-{
- printk(KERN_INFO "I2O Core - (C) Copyright 1999 Red Hat Software\n");
- if (i2o_install_handler(&i2o_core_handler) < 0)
- {
- printk(KERN_ERR
- "i2o_core: Unable to install core handler.\nI2O stack not loaded!");
- return 0;
- }
-
- core_context = i2o_core_handler.context;
-
- /*
- * Attach core to I2O PCI transport (and others as they are developed)
- */
-#ifdef CONFIG_I2O_PCI_MODULE
- if(i2o_pci_core_attach(&i2o_core_functions) < 0)
- printk(KERN_INFO "i2o: No PCI I2O controllers found\n");
-#endif
-
- /*
- * Initialize event handling thread
- */
- init_MUTEX_LOCKED(&evt_sem);
- evt_pid = kernel_thread(i2o_core_evt, &evt_reply, CLONE_SIGHAND);
- if(evt_pid < 0)
- {
- printk(KERN_ERR "I2O: Could not create event handler kernel thread\n");
- i2o_remove_handler(&i2o_core_handler);
- return 0;
- }
- else
- printk(KERN_INFO "I2O: Event thread created as pid %d\n", evt_pid);
-
- if(i2o_num_controllers)
- i2o_sys_init();
-
- register_reboot_notifier(&i2o_reboot_notifier);
-
- return 0;
-}
-
-void cleanup_module(void)
-{
- int stat;
-
- unregister_reboot_notifier(&i2o_reboot_notifier);
-
- if(i2o_num_controllers)
- i2o_sys_shutdown();
-
- /*
- * If this is shutdown time, the thread has already been killed
- */
- if(evt_running) {
- printk("Terminating i2o threads...");
- stat = kill_proc(evt_pid, SIGTERM, 1);
- if(!stat) {
- printk("waiting...");
- wait_for_completion(&evt_dead);
- }
- printk("done.\n");
- }
-
-#ifdef CONFIG_I2O_PCI_MODULE
- i2o_pci_core_detach();
-#endif
-
- i2o_remove_handler(&i2o_core_handler);
-
- unregister_reboot_notifier(&i2o_reboot_notifier);
-}
-
-#else
-
-extern int i2o_block_init(void);
-extern int i2o_config_init(void);
-extern int i2o_lan_init(void);
-extern int i2o_pci_init(void);
-extern int i2o_proc_init(void);
-extern int i2o_scsi_init(void);
-
-int __init i2o_init(void)
-{
- printk(KERN_INFO "Loading I2O Core - (c) Copyright 1999 Red Hat Software\n");
-
- if (i2o_install_handler(&i2o_core_handler) < 0)
- {
- printk(KERN_ERR
- "i2o_core: Unable to install core handler.\nI2O stack not loaded!");
- return 0;
- }
-
- core_context = i2o_core_handler.context;
-
- /*
- * Initialize event handling thread
- * We may not find any controllers, but still want this as
- * down the road we may have hot pluggable controllers that
- * need to be dealt with.
- */
- init_MUTEX_LOCKED(&evt_sem);
- if((evt_pid = kernel_thread(i2o_core_evt, &evt_reply, CLONE_SIGHAND)) < 0)
- {
- printk(KERN_ERR "I2O: Could not create event handler kernel thread\n");
- i2o_remove_handler(&i2o_core_handler);
- return 0;
- }
-
-
-#ifdef CONFIG_I2O_PCI
- i2o_pci_init();
-#endif
-
- if(i2o_num_controllers)
- i2o_sys_init();
-
- register_reboot_notifier(&i2o_reboot_notifier);
-
- i2o_config_init();
-#ifdef CONFIG_I2O_BLOCK
- i2o_block_init();
-#endif
-#ifdef CONFIG_I2O_LAN
- i2o_lan_init();
-#endif
-#ifdef CONFIG_I2O_PROC
- i2o_proc_init();
-#endif
- return 0;
-}
-
-#endif
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)