1 |
1275 |
phoenix |
/*
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2 |
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* drivers/i2o/i2o_lan.c
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*
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* I2O LAN CLASS OSM May 26th 2000
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*
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* (C) Copyright 1999, 2000 University of Helsinki,
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* Department of Computer Science
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*
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* This code is still under development / test.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Auvo Häkkinen <Auvo.Hakkinen@cs.Helsinki.FI>
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* Fixes: Juha Sievänen <Juha.Sievanen@cs.Helsinki.FI>
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* Taneli Vähäkangas <Taneli.Vahakangas@cs.Helsinki.FI>
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* Deepak Saxena <deepak@plexity.net>
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*
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* Tested: in FDDI environment (using SysKonnect's DDM)
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* in Gigabit Eth environment (using SysKonnect's DDM)
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* in Fast Ethernet environment (using Intel 82558 DDM)
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*
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* TODO: tests for other LAN classes (Token Ring, Fibre Channel)
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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30 |
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/fddidevice.h>
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#include <linux/trdevice.h>
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#include <linux/fcdevice.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/spinlock.h>
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#include <linux/tqueue.h>
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#include <asm/io.h>
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#include <linux/errno.h>
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#include <linux/i2o.h>
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#include "i2o_lan.h"
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//#define DRIVERDEBUG
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#ifdef DRIVERDEBUG
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#define dprintk(s, args...) printk(s, ## args)
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#else
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#define dprintk(s, args...)
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#endif
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/* The following module parameters are used as default values
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* for per interface values located in the net_device private area.
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* Private values are changed via /proc filesystem.
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*/
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static u32 max_buckets_out = I2O_LAN_MAX_BUCKETS_OUT;
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static u32 bucket_thresh = I2O_LAN_BUCKET_THRESH;
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static u32 rx_copybreak = I2O_LAN_RX_COPYBREAK;
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static u8 tx_batch_mode = I2O_LAN_TX_BATCH_MODE;
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static u32 i2o_event_mask = I2O_LAN_EVENT_MASK;
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#define MAX_LAN_CARDS 16
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static struct net_device *i2o_landevs[MAX_LAN_CARDS+1];
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static int unit = -1; /* device unit number */
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static void i2o_lan_reply(struct i2o_handler *h, struct i2o_controller *iop, struct i2o_message *m);
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static void i2o_lan_send_post_reply(struct i2o_handler *h, struct i2o_controller *iop, struct i2o_message *m);
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static int i2o_lan_receive_post(struct net_device *dev);
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static void i2o_lan_receive_post_reply(struct i2o_handler *h, struct i2o_controller *iop, struct i2o_message *m);
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static void i2o_lan_release_buckets(struct net_device *dev, u32 *msg);
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static int i2o_lan_reset(struct net_device *dev);
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static void i2o_lan_handle_event(struct net_device *dev, u32 *msg);
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/* Structures to register handlers for the incoming replies. */
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static struct i2o_handler i2o_lan_send_handler = {
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i2o_lan_send_post_reply, // For send replies
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NULL,
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NULL,
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NULL,
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"I2O LAN OSM send",
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-1,
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I2O_CLASS_LAN
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};
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static int lan_send_context;
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static struct i2o_handler i2o_lan_receive_handler = {
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i2o_lan_receive_post_reply, // For receive replies
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NULL,
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NULL,
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NULL,
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"I2O LAN OSM receive",
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-1,
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I2O_CLASS_LAN
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};
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static int lan_receive_context;
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static struct i2o_handler i2o_lan_handler = {
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i2o_lan_reply, // For other replies
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NULL,
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NULL,
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NULL,
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"I2O LAN OSM",
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-1,
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I2O_CLASS_LAN
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};
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static int lan_context;
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DECLARE_TASK_QUEUE(i2o_post_buckets_task);
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struct tq_struct run_i2o_post_buckets_task = {
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routine: (void (*)(void *)) run_task_queue,
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data: (void *) 0
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};
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/* Functions to handle message failures and transaction errors:
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==============================================================*/
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/*
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* i2o_lan_handle_failure(): Fail bit has been set since IOP's message
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* layer cannot deliver the request to the target, or the target cannot
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* process the request.
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*/
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static void i2o_lan_handle_failure(struct net_device *dev, u32 *msg)
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{
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struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
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struct i2o_device *i2o_dev = priv->i2o_dev;
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struct i2o_controller *iop = i2o_dev->controller;
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u32 *preserved_msg = (u32*)(iop->mem_offset + msg[7]);
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u32 *sgl_elem = &preserved_msg[4];
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struct sk_buff *skb = NULL;
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u8 le_flag;
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i2o_report_status(KERN_INFO, dev->name, msg);
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/* If PacketSend failed, free sk_buffs reserved by upper layers */
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if (msg[1] >> 24 == LAN_PACKET_SEND) {
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do {
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skb = (struct sk_buff *)(sgl_elem[1]);
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dev_kfree_skb_irq(skb);
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atomic_dec(&priv->tx_out);
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le_flag = *sgl_elem >> 31;
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sgl_elem +=3;
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} while (le_flag == 0); /* Last element flag not set */
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if (netif_queue_stopped(dev))
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netif_wake_queue(dev);
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}
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/* If ReceivePost failed, free sk_buffs we have reserved */
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if (msg[1] >> 24 == LAN_RECEIVE_POST) {
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do {
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skb = (struct sk_buff *)(sgl_elem[1]);
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dev_kfree_skb_irq(skb);
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atomic_dec(&priv->buckets_out);
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le_flag = *sgl_elem >> 31;
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sgl_elem +=3;
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} while (le_flag == 0); /* Last element flag not set */
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}
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/* Release the preserved msg frame by resubmitting it as a NOP */
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preserved_msg[0] = THREE_WORD_MSG_SIZE | SGL_OFFSET_0;
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preserved_msg[1] = I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0;
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preserved_msg[2] = 0;
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i2o_post_message(iop, msg[7]);
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}
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/*
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* i2o_lan_handle_transaction_error(): IOP or DDM has rejected the request
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* for general cause (format error, bad function code, insufficient resources,
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* etc.). We get one transaction_error for each failed transaction.
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*/
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static void i2o_lan_handle_transaction_error(struct net_device *dev, u32 *msg)
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{
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struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
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struct sk_buff *skb;
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i2o_report_status(KERN_INFO, dev->name, msg);
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/* If PacketSend was rejected, free sk_buff reserved by upper layers */
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if (msg[1] >> 24 == LAN_PACKET_SEND) {
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skb = (struct sk_buff *)(msg[3]); // TransactionContext
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dev_kfree_skb_irq(skb);
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atomic_dec(&priv->tx_out);
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if (netif_queue_stopped(dev))
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netif_wake_queue(dev);
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}
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/* If ReceivePost was rejected, free sk_buff we have reserved */
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if (msg[1] >> 24 == LAN_RECEIVE_POST) {
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skb = (struct sk_buff *)(msg[3]);
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dev_kfree_skb_irq(skb);
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atomic_dec(&priv->buckets_out);
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}
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}
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/*
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* i2o_lan_handle_status(): Common parts of handling a not succeeded request
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* (status != SUCCESS).
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*/
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static int i2o_lan_handle_status(struct net_device *dev, u32 *msg)
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{
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/* Fail bit set? */
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if (msg[0] & MSG_FAIL) {
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i2o_lan_handle_failure(dev, msg);
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return -1;
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}
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227 |
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/* Message rejected for general cause? */
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229 |
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if ((msg[4]>>24) == I2O_REPLY_STATUS_TRANSACTION_ERROR) {
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i2o_lan_handle_transaction_error(dev, msg);
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return -1;
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}
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/* Else have to handle it in the callback function */
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return 0;
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}
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/* Callback functions called from the interrupt routine:
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=======================================================*/
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241 |
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/*
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243 |
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* i2o_lan_send_post_reply(): Callback function to handle PostSend replies.
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*/
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static void i2o_lan_send_post_reply(struct i2o_handler *h,
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246 |
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struct i2o_controller *iop, struct i2o_message *m)
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247 |
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{
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248 |
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u32 *msg = (u32 *)m;
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249 |
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u8 unit = (u8)(msg[2]>>16); // InitiatorContext
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struct net_device *dev = i2o_landevs[unit];
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struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
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u8 trl_count = msg[3] & 0x000000FF;
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254 |
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if ((msg[4] >> 24) != I2O_REPLY_STATUS_SUCCESS) {
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if (i2o_lan_handle_status(dev, msg))
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return;
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}
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258 |
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259 |
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#ifdef DRIVERDEBUG
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260 |
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i2o_report_status(KERN_INFO, dev->name, msg);
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#endif
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262 |
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263 |
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/* DDM has handled transmit request(s), free sk_buffs.
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264 |
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* We get similar single transaction reply also in error cases
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265 |
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* (except if msg failure or transaction error).
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266 |
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*/
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267 |
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while (trl_count) {
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268 |
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dev_kfree_skb_irq((struct sk_buff *)msg[4 + trl_count]);
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269 |
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dprintk(KERN_INFO "%s: tx skb freed (trl_count=%d).\n",
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270 |
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dev->name, trl_count);
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271 |
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atomic_dec(&priv->tx_out);
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272 |
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trl_count--;
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273 |
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}
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274 |
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275 |
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/* If priv->tx_out had reached tx_max_out, the queue was stopped */
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276 |
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277 |
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if (netif_queue_stopped(dev))
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278 |
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netif_wake_queue(dev);
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279 |
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}
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280 |
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281 |
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/*
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282 |
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* i2o_lan_receive_post_reply(): Callback function to process incoming packets.
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283 |
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*/
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284 |
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static void i2o_lan_receive_post_reply(struct i2o_handler *h,
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285 |
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struct i2o_controller *iop, struct i2o_message *m)
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286 |
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{
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287 |
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u32 *msg = (u32 *)m;
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288 |
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u8 unit = (u8)(msg[2]>>16); // InitiatorContext
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289 |
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struct net_device *dev = i2o_landevs[unit];
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290 |
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291 |
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struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
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292 |
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struct i2o_bucket_descriptor *bucket = (struct i2o_bucket_descriptor *)&msg[6];
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293 |
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struct i2o_packet_info *packet;
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294 |
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u8 trl_count = msg[3] & 0x000000FF;
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295 |
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struct sk_buff *skb, *old_skb;
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296 |
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unsigned long flags = 0;
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297 |
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298 |
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if ((msg[4] >> 24) != I2O_REPLY_STATUS_SUCCESS) {
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299 |
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if (i2o_lan_handle_status(dev, msg))
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300 |
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return;
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301 |
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302 |
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i2o_lan_release_buckets(dev, msg);
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303 |
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return;
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304 |
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}
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305 |
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306 |
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#ifdef DRIVERDEBUG
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307 |
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i2o_report_status(KERN_INFO, dev->name, msg);
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308 |
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#endif
|
309 |
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|
310 |
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/* Else we are receiving incoming post. */
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311 |
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|
312 |
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while (trl_count--) {
|
313 |
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skb = (struct sk_buff *)bucket->context;
|
314 |
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packet = (struct i2o_packet_info *)bucket->packet_info;
|
315 |
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atomic_dec(&priv->buckets_out);
|
316 |
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|
317 |
|
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/* Sanity checks: Any weird characteristics in bucket? */
|
318 |
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|
319 |
|
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if (packet->flags & 0x0f || ! packet->flags & 0x40) {
|
320 |
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if (packet->flags & 0x01)
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321 |
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printk(KERN_WARNING "%s: packet with errors, error code=0x%02x.\n",
|
322 |
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dev->name, packet->status & 0xff);
|
323 |
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|
324 |
|
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/* The following shouldn't happen, unless parameters in
|
325 |
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* LAN_OPERATION group are changed during the run time.
|
326 |
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*/
|
327 |
|
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if (packet->flags & 0x0c)
|
328 |
|
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printk(KERN_DEBUG "%s: multi-bucket packets not supported!\n",
|
329 |
|
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dev->name);
|
330 |
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|
331 |
|
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if (! packet->flags & 0x40)
|
332 |
|
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printk(KERN_DEBUG "%s: multiple packets in a bucket not supported!\n",
|
333 |
|
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dev->name);
|
334 |
|
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|
335 |
|
|
dev_kfree_skb_irq(skb);
|
336 |
|
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|
337 |
|
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bucket++;
|
338 |
|
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continue;
|
339 |
|
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}
|
340 |
|
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|
341 |
|
|
/* Copy short packet to a new skb */
|
342 |
|
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|
343 |
|
|
if (packet->len < priv->rx_copybreak) {
|
344 |
|
|
old_skb = skb;
|
345 |
|
|
skb = (struct sk_buff *)dev_alloc_skb(packet->len+2);
|
346 |
|
|
if (skb == NULL) {
|
347 |
|
|
printk(KERN_ERR "%s: Can't allocate skb.\n", dev->name);
|
348 |
|
|
return;
|
349 |
|
|
}
|
350 |
|
|
skb_reserve(skb, 2);
|
351 |
|
|
memcpy(skb_put(skb, packet->len), old_skb->data, packet->len);
|
352 |
|
|
|
353 |
|
|
spin_lock_irqsave(&priv->fbl_lock, flags);
|
354 |
|
|
if (priv->i2o_fbl_tail < I2O_LAN_MAX_BUCKETS_OUT)
|
355 |
|
|
priv->i2o_fbl[++priv->i2o_fbl_tail] = old_skb;
|
356 |
|
|
else
|
357 |
|
|
dev_kfree_skb_irq(old_skb);
|
358 |
|
|
|
359 |
|
|
spin_unlock_irqrestore(&priv->fbl_lock, flags);
|
360 |
|
|
} else
|
361 |
|
|
skb_put(skb, packet->len);
|
362 |
|
|
|
363 |
|
|
/* Deliver to upper layers */
|
364 |
|
|
|
365 |
|
|
skb->dev = dev;
|
366 |
|
|
skb->protocol = priv->type_trans(skb, dev);
|
367 |
|
|
netif_rx(skb);
|
368 |
|
|
|
369 |
|
|
dev->last_rx = jiffies;
|
370 |
|
|
|
371 |
|
|
dprintk(KERN_INFO "%s: Incoming packet (%d bytes) delivered "
|
372 |
|
|
"to upper level.\n", dev->name, packet->len);
|
373 |
|
|
|
374 |
|
|
bucket++; // to next Packet Descriptor Block
|
375 |
|
|
}
|
376 |
|
|
|
377 |
|
|
#ifdef DRIVERDEBUG
|
378 |
|
|
if (msg[5] == 0)
|
379 |
|
|
printk(KERN_INFO "%s: DDM out of buckets (priv->count = %d)!\n",
|
380 |
|
|
dev->name, atomic_read(&priv->buckets_out));
|
381 |
|
|
#endif
|
382 |
|
|
|
383 |
|
|
/* If DDM has already consumed bucket_thresh buckets, post new ones */
|
384 |
|
|
|
385 |
|
|
if (atomic_read(&priv->buckets_out) <= priv->max_buckets_out - priv->bucket_thresh) {
|
386 |
|
|
run_i2o_post_buckets_task.data = (void *)dev;
|
387 |
|
|
queue_task(&run_i2o_post_buckets_task, &tq_immediate);
|
388 |
|
|
mark_bh(IMMEDIATE_BH);
|
389 |
|
|
}
|
390 |
|
|
|
391 |
|
|
return;
|
392 |
|
|
}
|
393 |
|
|
|
394 |
|
|
/*
|
395 |
|
|
* i2o_lan_reply(): Callback function to handle other incoming messages
|
396 |
|
|
* except SendPost and ReceivePost.
|
397 |
|
|
*/
|
398 |
|
|
static void i2o_lan_reply(struct i2o_handler *h, struct i2o_controller *iop,
|
399 |
|
|
struct i2o_message *m)
|
400 |
|
|
{
|
401 |
|
|
u32 *msg = (u32 *)m;
|
402 |
|
|
u8 unit = (u8)(msg[2]>>16); // InitiatorContext
|
403 |
|
|
struct net_device *dev = i2o_landevs[unit];
|
404 |
|
|
|
405 |
|
|
if ((msg[4] >> 24) != I2O_REPLY_STATUS_SUCCESS) {
|
406 |
|
|
if (i2o_lan_handle_status(dev, msg))
|
407 |
|
|
return;
|
408 |
|
|
|
409 |
|
|
/* In other error cases just report and continue */
|
410 |
|
|
|
411 |
|
|
i2o_report_status(KERN_INFO, dev->name, msg);
|
412 |
|
|
}
|
413 |
|
|
|
414 |
|
|
#ifdef DRIVERDEBUG
|
415 |
|
|
i2o_report_status(KERN_INFO, dev->name, msg);
|
416 |
|
|
#endif
|
417 |
|
|
switch (msg[1] >> 24) {
|
418 |
|
|
case LAN_RESET:
|
419 |
|
|
case LAN_SUSPEND:
|
420 |
|
|
/* default reply without payload */
|
421 |
|
|
break;
|
422 |
|
|
|
423 |
|
|
case I2O_CMD_UTIL_EVT_REGISTER:
|
424 |
|
|
case I2O_CMD_UTIL_EVT_ACK:
|
425 |
|
|
i2o_lan_handle_event(dev, msg);
|
426 |
|
|
break;
|
427 |
|
|
|
428 |
|
|
case I2O_CMD_UTIL_PARAMS_SET:
|
429 |
|
|
/* default reply, results in ReplyPayload (not examined) */
|
430 |
|
|
switch (msg[3] >> 16) {
|
431 |
|
|
case 1: dprintk(KERN_INFO "%s: Reply to set MAC filter mask.\n",
|
432 |
|
|
dev->name);
|
433 |
|
|
break;
|
434 |
|
|
case 2: dprintk(KERN_INFO "%s: Reply to set MAC table.\n",
|
435 |
|
|
dev->name);
|
436 |
|
|
break;
|
437 |
|
|
default: printk(KERN_WARNING "%s: Bad group 0x%04X\n",
|
438 |
|
|
dev->name,msg[3] >> 16);
|
439 |
|
|
}
|
440 |
|
|
break;
|
441 |
|
|
|
442 |
|
|
default:
|
443 |
|
|
printk(KERN_ERR "%s: No handler for the reply.\n",
|
444 |
|
|
dev->name);
|
445 |
|
|
i2o_report_status(KERN_INFO, dev->name, msg);
|
446 |
|
|
}
|
447 |
|
|
}
|
448 |
|
|
|
449 |
|
|
/* Functions used by the above callback functions:
|
450 |
|
|
=================================================*/
|
451 |
|
|
/*
|
452 |
|
|
* i2o_lan_release_buckets(): Free unused buckets (sk_buffs).
|
453 |
|
|
*/
|
454 |
|
|
static void i2o_lan_release_buckets(struct net_device *dev, u32 *msg)
|
455 |
|
|
{
|
456 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
457 |
|
|
u8 trl_elem_size = (u8)(msg[3]>>8 & 0x000000FF);
|
458 |
|
|
u8 trl_count = (u8)(msg[3] & 0x000000FF);
|
459 |
|
|
u32 *pskb = &msg[6];
|
460 |
|
|
|
461 |
|
|
while (trl_count--) {
|
462 |
|
|
dprintk(KERN_DEBUG "%s: Releasing unused rx skb %p (trl_count=%d).\n",
|
463 |
|
|
dev->name, (struct sk_buff*)(*pskb),trl_count+1);
|
464 |
|
|
dev_kfree_skb_irq((struct sk_buff *)(*pskb));
|
465 |
|
|
pskb += 1 + trl_elem_size;
|
466 |
|
|
atomic_dec(&priv->buckets_out);
|
467 |
|
|
}
|
468 |
|
|
}
|
469 |
|
|
|
470 |
|
|
/*
|
471 |
|
|
* i2o_lan_event_reply(): Handle events.
|
472 |
|
|
*/
|
473 |
|
|
static void i2o_lan_handle_event(struct net_device *dev, u32 *msg)
|
474 |
|
|
{
|
475 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
476 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
477 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
478 |
|
|
u32 max_evt_data_size =iop->status_block->inbound_frame_size-5;
|
479 |
|
|
struct i2o_reply {
|
480 |
|
|
u32 header[4];
|
481 |
|
|
u32 evt_indicator;
|
482 |
|
|
u32 data[max_evt_data_size];
|
483 |
|
|
} *evt = (struct i2o_reply *)msg;
|
484 |
|
|
int evt_data_len = ((msg[0]>>16) - 5) * 4; /* real size*/
|
485 |
|
|
|
486 |
|
|
printk(KERN_INFO "%s: I2O event - ", dev->name);
|
487 |
|
|
|
488 |
|
|
if (msg[1]>>24 == I2O_CMD_UTIL_EVT_ACK) {
|
489 |
|
|
printk("Event acknowledgement reply.\n");
|
490 |
|
|
return;
|
491 |
|
|
}
|
492 |
|
|
|
493 |
|
|
/* Else evt->function == I2O_CMD_UTIL_EVT_REGISTER) */
|
494 |
|
|
|
495 |
|
|
switch (evt->evt_indicator) {
|
496 |
|
|
case I2O_EVT_IND_STATE_CHANGE: {
|
497 |
|
|
struct state_data {
|
498 |
|
|
u16 status;
|
499 |
|
|
u8 state;
|
500 |
|
|
u8 data;
|
501 |
|
|
} *evt_data = (struct state_data *)(evt->data[0]);
|
502 |
|
|
|
503 |
|
|
printk("State chance 0x%08x.\n", evt->data[0]);
|
504 |
|
|
|
505 |
|
|
/* If the DDM is in error state, recovery may be
|
506 |
|
|
* possible if status = Transmit or Receive Control
|
507 |
|
|
* Unit Inoperable.
|
508 |
|
|
*/
|
509 |
|
|
if (evt_data->state==0x05 && evt_data->status==0x0003)
|
510 |
|
|
i2o_lan_reset(dev);
|
511 |
|
|
break;
|
512 |
|
|
}
|
513 |
|
|
|
514 |
|
|
case I2O_EVT_IND_FIELD_MODIFIED: {
|
515 |
|
|
u16 *work16 = (u16 *)evt->data;
|
516 |
|
|
printk("Group 0x%04x, field %d changed.\n", work16[0], work16[1]);
|
517 |
|
|
break;
|
518 |
|
|
}
|
519 |
|
|
|
520 |
|
|
case I2O_EVT_IND_VENDOR_EVT: {
|
521 |
|
|
int i;
|
522 |
|
|
printk("Vendor event:\n");
|
523 |
|
|
for (i = 0; i < evt_data_len / 4; i++)
|
524 |
|
|
printk(" 0x%08x\n", evt->data[i]);
|
525 |
|
|
break;
|
526 |
|
|
}
|
527 |
|
|
|
528 |
|
|
case I2O_EVT_IND_DEVICE_RESET:
|
529 |
|
|
/* Spec 2.0 p. 6-121:
|
530 |
|
|
* The event of _DEVICE_RESET should also be responded
|
531 |
|
|
*/
|
532 |
|
|
printk("Device reset.\n");
|
533 |
|
|
if (i2o_event_ack(iop, msg) < 0)
|
534 |
|
|
printk("%s: Event Acknowledge timeout.\n", dev->name);
|
535 |
|
|
break;
|
536 |
|
|
|
537 |
|
|
#if 0
|
538 |
|
|
case I2O_EVT_IND_EVT_MASK_MODIFIED:
|
539 |
|
|
printk("Event mask modified, 0x%08x.\n", evt->data[0]);
|
540 |
|
|
break;
|
541 |
|
|
|
542 |
|
|
case I2O_EVT_IND_GENERAL_WARNING:
|
543 |
|
|
printk("General warning 0x%04x.\n", evt->data[0]);
|
544 |
|
|
break;
|
545 |
|
|
|
546 |
|
|
case I2O_EVT_IND_CONFIGURATION_FLAG:
|
547 |
|
|
printk("Configuration requested.\n");
|
548 |
|
|
break;
|
549 |
|
|
|
550 |
|
|
case I2O_EVT_IND_CAPABILITY_CHANGE:
|
551 |
|
|
printk("Capability change 0x%04x.\n", evt->data[0]);
|
552 |
|
|
break;
|
553 |
|
|
|
554 |
|
|
case I2O_EVT_IND_DEVICE_STATE:
|
555 |
|
|
printk("Device state changed 0x%08x.\n", evt->data[0]);
|
556 |
|
|
break;
|
557 |
|
|
#endif
|
558 |
|
|
case I2O_LAN_EVT_LINK_DOWN:
|
559 |
|
|
netif_carrier_off(dev);
|
560 |
|
|
printk("Link to the physical device is lost.\n");
|
561 |
|
|
break;
|
562 |
|
|
|
563 |
|
|
case I2O_LAN_EVT_LINK_UP:
|
564 |
|
|
netif_carrier_on(dev);
|
565 |
|
|
printk("Link to the physical device is (re)established.\n");
|
566 |
|
|
break;
|
567 |
|
|
|
568 |
|
|
case I2O_LAN_EVT_MEDIA_CHANGE:
|
569 |
|
|
printk("Media change.\n");
|
570 |
|
|
break;
|
571 |
|
|
default:
|
572 |
|
|
printk("0x%08x. No handler.\n", evt->evt_indicator);
|
573 |
|
|
}
|
574 |
|
|
}
|
575 |
|
|
|
576 |
|
|
/*
|
577 |
|
|
* i2o_lan_receive_post(): Post buckets to receive packets.
|
578 |
|
|
*/
|
579 |
|
|
static int i2o_lan_receive_post(struct net_device *dev)
|
580 |
|
|
{
|
581 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
582 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
583 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
584 |
|
|
struct sk_buff *skb;
|
585 |
|
|
u32 m, *msg;
|
586 |
|
|
u32 bucket_len = (dev->mtu + dev->hard_header_len);
|
587 |
|
|
u32 total = priv->max_buckets_out - atomic_read(&priv->buckets_out);
|
588 |
|
|
u32 bucket_count;
|
589 |
|
|
u32 *sgl_elem;
|
590 |
|
|
unsigned long flags;
|
591 |
|
|
|
592 |
|
|
/* Send (total/bucket_count) separate I2O requests */
|
593 |
|
|
|
594 |
|
|
while (total) {
|
595 |
|
|
m = I2O_POST_READ32(iop);
|
596 |
|
|
if (m == 0xFFFFFFFF)
|
597 |
|
|
return -ETIMEDOUT;
|
598 |
|
|
msg = (u32 *)(iop->mem_offset + m);
|
599 |
|
|
|
600 |
|
|
bucket_count = (total >= priv->sgl_max) ? priv->sgl_max : total;
|
601 |
|
|
total -= bucket_count;
|
602 |
|
|
atomic_add(bucket_count, &priv->buckets_out);
|
603 |
|
|
|
604 |
|
|
dprintk(KERN_INFO "%s: Sending %d buckets (size %d) to LAN DDM.\n",
|
605 |
|
|
dev->name, bucket_count, bucket_len);
|
606 |
|
|
|
607 |
|
|
/* Fill in the header */
|
608 |
|
|
|
609 |
|
|
__raw_writel(I2O_MESSAGE_SIZE(4 + 3 * bucket_count) | SGL_OFFSET_4, msg);
|
610 |
|
|
__raw_writel(LAN_RECEIVE_POST<<24 | HOST_TID<<12 | i2o_dev->lct_data.tid, msg+1);
|
611 |
|
|
__raw_writel(priv->unit << 16 | lan_receive_context, msg+2);
|
612 |
|
|
__raw_writel(bucket_count, msg+3);
|
613 |
|
|
sgl_elem = &msg[4];
|
614 |
|
|
|
615 |
|
|
/* Fill in the payload - contains bucket_count SGL elements */
|
616 |
|
|
|
617 |
|
|
while (bucket_count--) {
|
618 |
|
|
spin_lock_irqsave(&priv->fbl_lock, flags);
|
619 |
|
|
if (priv->i2o_fbl_tail >= 0)
|
620 |
|
|
skb = priv->i2o_fbl[priv->i2o_fbl_tail--];
|
621 |
|
|
else {
|
622 |
|
|
skb = dev_alloc_skb(bucket_len + 2);
|
623 |
|
|
if (skb == NULL) {
|
624 |
|
|
spin_unlock_irqrestore(&priv->fbl_lock, flags);
|
625 |
|
|
return -ENOMEM;
|
626 |
|
|
}
|
627 |
|
|
skb_reserve(skb, 2);
|
628 |
|
|
}
|
629 |
|
|
spin_unlock_irqrestore(&priv->fbl_lock, flags);
|
630 |
|
|
|
631 |
|
|
__raw_writel(0x51000000 | bucket_len, sgl_elem);
|
632 |
|
|
__raw_writel((u32)skb, sgl_elem+1);
|
633 |
|
|
__raw_writel(virt_to_bus(skb->data), sgl_elem+2);
|
634 |
|
|
sgl_elem += 3;
|
635 |
|
|
}
|
636 |
|
|
|
637 |
|
|
/* set LE flag and post */
|
638 |
|
|
__raw_writel(__raw_readl(sgl_elem-3) | 0x80000000, (sgl_elem-3));
|
639 |
|
|
i2o_post_message(iop, m);
|
640 |
|
|
}
|
641 |
|
|
|
642 |
|
|
return 0;
|
643 |
|
|
}
|
644 |
|
|
|
645 |
|
|
/* Functions called from the network stack, and functions called by them:
|
646 |
|
|
========================================================================*/
|
647 |
|
|
|
648 |
|
|
/*
|
649 |
|
|
* i2o_lan_reset(): Reset the LAN adapter into the operational state and
|
650 |
|
|
* restore it to full operation.
|
651 |
|
|
*/
|
652 |
|
|
static int i2o_lan_reset(struct net_device *dev)
|
653 |
|
|
{
|
654 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
655 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
656 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
657 |
|
|
u32 msg[5];
|
658 |
|
|
|
659 |
|
|
dprintk(KERN_INFO "%s: LAN RESET MESSAGE.\n", dev->name);
|
660 |
|
|
msg[0] = FIVE_WORD_MSG_SIZE | SGL_OFFSET_0;
|
661 |
|
|
msg[1] = LAN_RESET<<24 | HOST_TID<<12 | i2o_dev->lct_data.tid;
|
662 |
|
|
msg[2] = priv->unit << 16 | lan_context; // InitiatorContext
|
663 |
|
|
msg[3] = 0; // TransactionContext
|
664 |
|
|
msg[4] = 0; // Keep posted buckets
|
665 |
|
|
|
666 |
|
|
if (i2o_post_this(iop, msg, sizeof(msg)) < 0)
|
667 |
|
|
return -ETIMEDOUT;
|
668 |
|
|
|
669 |
|
|
return 0;
|
670 |
|
|
}
|
671 |
|
|
|
672 |
|
|
/*
|
673 |
|
|
* i2o_lan_suspend(): Put LAN adapter into a safe, non-active state.
|
674 |
|
|
* IOP replies to any LAN class message with status error_no_data_transfer
|
675 |
|
|
* / suspended.
|
676 |
|
|
*/
|
677 |
|
|
static int i2o_lan_suspend(struct net_device *dev)
|
678 |
|
|
{
|
679 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
680 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
681 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
682 |
|
|
u32 msg[5];
|
683 |
|
|
|
684 |
|
|
dprintk(KERN_INFO "%s: LAN SUSPEND MESSAGE.\n", dev->name);
|
685 |
|
|
msg[0] = FIVE_WORD_MSG_SIZE | SGL_OFFSET_0;
|
686 |
|
|
msg[1] = LAN_SUSPEND<<24 | HOST_TID<<12 | i2o_dev->lct_data.tid;
|
687 |
|
|
msg[2] = priv->unit << 16 | lan_context; // InitiatorContext
|
688 |
|
|
msg[3] = 0; // TransactionContext
|
689 |
|
|
msg[4] = 1 << 16; // return posted buckets
|
690 |
|
|
|
691 |
|
|
if (i2o_post_this(iop, msg, sizeof(msg)) < 0)
|
692 |
|
|
return -ETIMEDOUT;
|
693 |
|
|
|
694 |
|
|
return 0;
|
695 |
|
|
}
|
696 |
|
|
|
697 |
|
|
/*
|
698 |
|
|
* i2o_set_ddm_parameters:
|
699 |
|
|
* These settings are done to ensure proper initial values for DDM.
|
700 |
|
|
* They can be changed via proc file system or vai configuration utility.
|
701 |
|
|
*/
|
702 |
|
|
static void i2o_set_ddm_parameters(struct net_device *dev)
|
703 |
|
|
{
|
704 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
705 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
706 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
707 |
|
|
u32 val;
|
708 |
|
|
|
709 |
|
|
/*
|
710 |
|
|
* When PacketOrphanlimit is set to the maximum packet length,
|
711 |
|
|
* the packets will never be split into two separate buckets
|
712 |
|
|
*/
|
713 |
|
|
val = dev->mtu + dev->hard_header_len;
|
714 |
|
|
if (i2o_set_scalar(iop, i2o_dev->lct_data.tid, 0x0004, 2, &val, sizeof(val)) < 0)
|
715 |
|
|
printk(KERN_WARNING "%s: Unable to set PacketOrphanLimit.\n",
|
716 |
|
|
dev->name);
|
717 |
|
|
else
|
718 |
|
|
dprintk(KERN_INFO "%s: PacketOrphanLimit set to %d.\n",
|
719 |
|
|
dev->name, val);
|
720 |
|
|
|
721 |
|
|
/* When RxMaxPacketsBucket = 1, DDM puts only one packet into bucket */
|
722 |
|
|
|
723 |
|
|
val = 1;
|
724 |
|
|
if (i2o_set_scalar(iop, i2o_dev->lct_data.tid, 0x0008, 4, &val, sizeof(val)) <0)
|
725 |
|
|
printk(KERN_WARNING "%s: Unable to set RxMaxPacketsBucket.\n",
|
726 |
|
|
dev->name);
|
727 |
|
|
else
|
728 |
|
|
dprintk(KERN_INFO "%s: RxMaxPacketsBucket set to %d.\n",
|
729 |
|
|
dev->name, val);
|
730 |
|
|
return;
|
731 |
|
|
}
|
732 |
|
|
|
733 |
|
|
/* Functions called from the network stack:
|
734 |
|
|
==========================================*/
|
735 |
|
|
|
736 |
|
|
/*
|
737 |
|
|
* i2o_lan_open(): Open the device to send/receive packets via
|
738 |
|
|
* the network device.
|
739 |
|
|
*/
|
740 |
|
|
static int i2o_lan_open(struct net_device *dev)
|
741 |
|
|
{
|
742 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
743 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
744 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
745 |
|
|
u32 mc_addr_group[64];
|
746 |
|
|
|
747 |
|
|
MOD_INC_USE_COUNT;
|
748 |
|
|
|
749 |
|
|
if (i2o_claim_device(i2o_dev, &i2o_lan_handler)) {
|
750 |
|
|
printk(KERN_WARNING "%s: Unable to claim the I2O LAN device.\n", dev->name);
|
751 |
|
|
MOD_DEC_USE_COUNT;
|
752 |
|
|
return -EAGAIN;
|
753 |
|
|
}
|
754 |
|
|
dprintk(KERN_INFO "%s: I2O LAN device (tid=%d) claimed by LAN OSM.\n",
|
755 |
|
|
dev->name, i2o_dev->lct_data.tid);
|
756 |
|
|
|
757 |
|
|
if (i2o_event_register(iop, i2o_dev->lct_data.tid,
|
758 |
|
|
priv->unit << 16 | lan_context, 0, priv->i2o_event_mask) < 0)
|
759 |
|
|
printk(KERN_WARNING "%s: Unable to set the event mask.\n", dev->name);
|
760 |
|
|
|
761 |
|
|
i2o_lan_reset(dev);
|
762 |
|
|
|
763 |
|
|
/* Get the max number of multicast addresses */
|
764 |
|
|
|
765 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0001, -1,
|
766 |
|
|
&mc_addr_group, sizeof(mc_addr_group)) < 0 ) {
|
767 |
|
|
printk(KERN_WARNING "%s: Unable to query LAN_MAC_ADDRESS group.\n", dev->name);
|
768 |
|
|
MOD_DEC_USE_COUNT;
|
769 |
|
|
return -EAGAIN;
|
770 |
|
|
}
|
771 |
|
|
priv->max_size_mc_table = mc_addr_group[8];
|
772 |
|
|
|
773 |
|
|
/* Malloc space for free bucket list to resuse reveive post buckets */
|
774 |
|
|
|
775 |
|
|
priv->i2o_fbl = kmalloc(priv->max_buckets_out * sizeof(struct sk_buff *),
|
776 |
|
|
GFP_KERNEL);
|
777 |
|
|
if (priv->i2o_fbl == NULL) {
|
778 |
|
|
MOD_DEC_USE_COUNT;
|
779 |
|
|
return -ENOMEM;
|
780 |
|
|
}
|
781 |
|
|
priv->i2o_fbl_tail = -1;
|
782 |
|
|
priv->send_active = 0;
|
783 |
|
|
|
784 |
|
|
i2o_set_ddm_parameters(dev);
|
785 |
|
|
i2o_lan_receive_post(dev);
|
786 |
|
|
|
787 |
|
|
netif_start_queue(dev);
|
788 |
|
|
|
789 |
|
|
return 0;
|
790 |
|
|
}
|
791 |
|
|
|
792 |
|
|
/*
|
793 |
|
|
* i2o_lan_close(): End the transfering.
|
794 |
|
|
*/
|
795 |
|
|
static int i2o_lan_close(struct net_device *dev)
|
796 |
|
|
{
|
797 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
798 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
799 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
800 |
|
|
int ret = 0;
|
801 |
|
|
|
802 |
|
|
netif_stop_queue(dev);
|
803 |
|
|
i2o_lan_suspend(dev);
|
804 |
|
|
|
805 |
|
|
if (i2o_event_register(iop, i2o_dev->lct_data.tid,
|
806 |
|
|
priv->unit << 16 | lan_context, 0, 0) < 0)
|
807 |
|
|
printk(KERN_WARNING "%s: Unable to clear the event mask.\n",
|
808 |
|
|
dev->name);
|
809 |
|
|
|
810 |
|
|
while (priv->i2o_fbl_tail >= 0)
|
811 |
|
|
dev_kfree_skb(priv->i2o_fbl[priv->i2o_fbl_tail--]);
|
812 |
|
|
|
813 |
|
|
kfree(priv->i2o_fbl);
|
814 |
|
|
|
815 |
|
|
if (i2o_release_device(i2o_dev, &i2o_lan_handler)) {
|
816 |
|
|
printk(KERN_WARNING "%s: Unable to unclaim I2O LAN device "
|
817 |
|
|
"(tid=%d).\n", dev->name, i2o_dev->lct_data.tid);
|
818 |
|
|
ret = -EBUSY;
|
819 |
|
|
}
|
820 |
|
|
|
821 |
|
|
MOD_DEC_USE_COUNT;
|
822 |
|
|
|
823 |
|
|
return ret;
|
824 |
|
|
}
|
825 |
|
|
|
826 |
|
|
/*
|
827 |
|
|
* i2o_lan_tx_timeout(): Tx timeout handler.
|
828 |
|
|
*/
|
829 |
|
|
static void i2o_lan_tx_timeout(struct net_device *dev)
|
830 |
|
|
{
|
831 |
|
|
if (!netif_queue_stopped(dev))
|
832 |
|
|
netif_start_queue(dev);
|
833 |
|
|
}
|
834 |
|
|
|
835 |
|
|
/*
|
836 |
|
|
* i2o_lan_batch_send(): Send packets in batch.
|
837 |
|
|
* Both i2o_lan_sdu_send and i2o_lan_packet_send use this.
|
838 |
|
|
*/
|
839 |
|
|
static void i2o_lan_batch_send(struct net_device *dev)
|
840 |
|
|
{
|
841 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
842 |
|
|
struct i2o_controller *iop = priv->i2o_dev->controller;
|
843 |
|
|
|
844 |
|
|
spin_lock_irq(&priv->tx_lock);
|
845 |
|
|
if (priv->tx_count != 0) {
|
846 |
|
|
dev->trans_start = jiffies;
|
847 |
|
|
i2o_post_message(iop, priv->m);
|
848 |
|
|
dprintk(KERN_DEBUG "%s: %d packets sent.\n", dev->name, priv->tx_count);
|
849 |
|
|
priv->tx_count = 0;
|
850 |
|
|
}
|
851 |
|
|
priv->send_active = 0;
|
852 |
|
|
spin_unlock_irq(&priv->tx_lock);
|
853 |
|
|
MOD_DEC_USE_COUNT;
|
854 |
|
|
}
|
855 |
|
|
|
856 |
|
|
#ifdef CONFIG_NET_FC
|
857 |
|
|
/*
|
858 |
|
|
* i2o_lan_sdu_send(): Send a packet, MAC header added by the DDM.
|
859 |
|
|
* Must be supported by Fibre Channel, optional for Ethernet/802.3,
|
860 |
|
|
* Token Ring, FDDI
|
861 |
|
|
*/
|
862 |
|
|
static int i2o_lan_sdu_send(struct sk_buff *skb, struct net_device *dev)
|
863 |
|
|
{
|
864 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
865 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
866 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
867 |
|
|
int tickssofar = jiffies - dev->trans_start;
|
868 |
|
|
u32 m, *msg;
|
869 |
|
|
u32 *sgl_elem;
|
870 |
|
|
|
871 |
|
|
spin_lock_irq(&priv->tx_lock);
|
872 |
|
|
|
873 |
|
|
priv->tx_count++;
|
874 |
|
|
atomic_inc(&priv->tx_out);
|
875 |
|
|
|
876 |
|
|
/*
|
877 |
|
|
* If tx_batch_mode = 0x00 forced to immediate mode
|
878 |
|
|
* If tx_batch_mode = 0x01 forced to batch mode
|
879 |
|
|
* If tx_batch_mode = 0x10 switch automatically, current mode immediate
|
880 |
|
|
* If tx_batch_mode = 0x11 switch automatically, current mode batch
|
881 |
|
|
* If gap between two packets is > 0 ticks, switch to immediate
|
882 |
|
|
*/
|
883 |
|
|
if (priv->tx_batch_mode >> 1) // switch automatically
|
884 |
|
|
priv->tx_batch_mode = tickssofar ? 0x02 : 0x03;
|
885 |
|
|
|
886 |
|
|
if (priv->tx_count == 1) {
|
887 |
|
|
m = I2O_POST_READ32(iop);
|
888 |
|
|
if (m == 0xFFFFFFFF) {
|
889 |
|
|
spin_unlock_irq(&priv->tx_lock);
|
890 |
|
|
return 1;
|
891 |
|
|
}
|
892 |
|
|
msg = (u32 *)(iop->mem_offset + m);
|
893 |
|
|
priv->m = m;
|
894 |
|
|
|
895 |
|
|
__raw_writel(NINE_WORD_MSG_SIZE | 1<<12 | SGL_OFFSET_4, msg);
|
896 |
|
|
__raw_writel(LAN_PACKET_SEND<<24 | HOST_TID<<12 | i2o_dev->lct_data.tid, msg+1);
|
897 |
|
|
__raw_writel(priv->unit << 16 | lan_send_context, msg+2); // InitiatorContext
|
898 |
|
|
__raw_writel(1 << 30 | 1 << 3, msg+3); // TransmitControlWord
|
899 |
|
|
|
900 |
|
|
__raw_writel(0xD7000000 | skb->len, msg+4); // MAC hdr included
|
901 |
|
|
__raw_writel((u32)skb, msg+5); // TransactionContext
|
902 |
|
|
__raw_writel(virt_to_bus(skb->data), msg+6);
|
903 |
|
|
__raw_writel((u32)skb->mac.raw, msg+7);
|
904 |
|
|
__raw_writel((u32)skb->mac.raw+4, msg+8);
|
905 |
|
|
|
906 |
|
|
if ((priv->tx_batch_mode & 0x01) && !priv->send_active) {
|
907 |
|
|
priv->send_active = 1;
|
908 |
|
|
MOD_INC_USE_COUNT;
|
909 |
|
|
if (schedule_task(&priv->i2o_batch_send_task) == 0)
|
910 |
|
|
MOD_DEC_USE_COUNT;
|
911 |
|
|
}
|
912 |
|
|
} else { /* Add new SGL element to the previous message frame */
|
913 |
|
|
|
914 |
|
|
msg = (u32 *)(iop->mem_offset + priv->m);
|
915 |
|
|
sgl_elem = &msg[priv->tx_count * 5 + 1];
|
916 |
|
|
|
917 |
|
|
__raw_writel(I2O_MESSAGE_SIZE((__raw_readl(msg)>>16) + 5) | 1<<12 | SGL_OFFSET_4, msg);
|
918 |
|
|
__raw_writel(__raw_readl(sgl_elem-5) & 0x7FFFFFFF, sgl_elem-5); /* clear LE flag */
|
919 |
|
|
__raw_writel(0xD5000000 | skb->len, sgl_elem);
|
920 |
|
|
__raw_writel((u32)skb, sgl_elem+1);
|
921 |
|
|
__raw_writel(virt_to_bus(skb->data), sgl_elem+2);
|
922 |
|
|
__raw_writel((u32)(skb->mac.raw), sgl_elem+3);
|
923 |
|
|
__raw_writel((u32)(skb->mac.raw)+1, sgl_elem+4);
|
924 |
|
|
}
|
925 |
|
|
|
926 |
|
|
/* If tx not in batch mode or frame is full, send immediatelly */
|
927 |
|
|
|
928 |
|
|
if (!(priv->tx_batch_mode & 0x01) || priv->tx_count == priv->sgl_max) {
|
929 |
|
|
dev->trans_start = jiffies;
|
930 |
|
|
i2o_post_message(iop, priv->m);
|
931 |
|
|
dprintk(KERN_DEBUG "%s: %d packets sent.\n", dev->name, priv->tx_count);
|
932 |
|
|
priv->tx_count = 0;
|
933 |
|
|
}
|
934 |
|
|
|
935 |
|
|
/* If DDMs TxMaxPktOut reached, stop queueing layer to send more */
|
936 |
|
|
|
937 |
|
|
if (atomic_read(&priv->tx_out) >= priv->tx_max_out)
|
938 |
|
|
netif_stop_queue(dev);
|
939 |
|
|
|
940 |
|
|
spin_unlock_irq(&priv->tx_lock);
|
941 |
|
|
return 0;
|
942 |
|
|
}
|
943 |
|
|
#endif /* CONFIG_NET_FC */
|
944 |
|
|
|
945 |
|
|
/*
|
946 |
|
|
* i2o_lan_packet_send(): Send a packet as is, including the MAC header.
|
947 |
|
|
*
|
948 |
|
|
* Must be supported by Ethernet/802.3, Token Ring, FDDI, optional for
|
949 |
|
|
* Fibre Channel
|
950 |
|
|
*/
|
951 |
|
|
static int i2o_lan_packet_send(struct sk_buff *skb, struct net_device *dev)
|
952 |
|
|
{
|
953 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
954 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
955 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
956 |
|
|
int tickssofar = jiffies - dev->trans_start;
|
957 |
|
|
u32 m, *msg;
|
958 |
|
|
u32 *sgl_elem;
|
959 |
|
|
|
960 |
|
|
spin_lock_irq(&priv->tx_lock);
|
961 |
|
|
|
962 |
|
|
priv->tx_count++;
|
963 |
|
|
atomic_inc(&priv->tx_out);
|
964 |
|
|
|
965 |
|
|
/*
|
966 |
|
|
* If tx_batch_mode = 0x00 forced to immediate mode
|
967 |
|
|
* If tx_batch_mode = 0x01 forced to batch mode
|
968 |
|
|
* If tx_batch_mode = 0x10 switch automatically, current mode immediate
|
969 |
|
|
* If tx_batch_mode = 0x11 switch automatically, current mode batch
|
970 |
|
|
* If gap between two packets is > 0 ticks, switch to immediate
|
971 |
|
|
*/
|
972 |
|
|
if (priv->tx_batch_mode >> 1) // switch automatically
|
973 |
|
|
priv->tx_batch_mode = tickssofar ? 0x02 : 0x03;
|
974 |
|
|
|
975 |
|
|
if (priv->tx_count == 1) {
|
976 |
|
|
m = I2O_POST_READ32(iop);
|
977 |
|
|
if (m == 0xFFFFFFFF) {
|
978 |
|
|
spin_unlock_irq(&priv->tx_lock);
|
979 |
|
|
return 1;
|
980 |
|
|
}
|
981 |
|
|
msg = (u32 *)(iop->mem_offset + m);
|
982 |
|
|
priv->m = m;
|
983 |
|
|
|
984 |
|
|
__raw_writel(SEVEN_WORD_MSG_SIZE | 1<<12 | SGL_OFFSET_4, msg);
|
985 |
|
|
__raw_writel(LAN_PACKET_SEND<<24 | HOST_TID<<12 | i2o_dev->lct_data.tid, msg+1);
|
986 |
|
|
__raw_writel(priv->unit << 16 | lan_send_context, msg+2); // InitiatorContext
|
987 |
|
|
__raw_writel(1 << 30 | 1 << 3, msg+3); // TransmitControlWord
|
988 |
|
|
// bit 30: reply as soon as transmission attempt is complete
|
989 |
|
|
// bit 3: Suppress CRC generation
|
990 |
|
|
__raw_writel(0xD5000000 | skb->len, msg+4); // MAC hdr included
|
991 |
|
|
__raw_writel((u32)skb, msg+5); // TransactionContext
|
992 |
|
|
__raw_writel(virt_to_bus(skb->data), msg+6);
|
993 |
|
|
|
994 |
|
|
if ((priv->tx_batch_mode & 0x01) && !priv->send_active) {
|
995 |
|
|
priv->send_active = 1;
|
996 |
|
|
MOD_INC_USE_COUNT;
|
997 |
|
|
if (schedule_task(&priv->i2o_batch_send_task) == 0)
|
998 |
|
|
MOD_DEC_USE_COUNT;
|
999 |
|
|
}
|
1000 |
|
|
} else { /* Add new SGL element to the previous message frame */
|
1001 |
|
|
|
1002 |
|
|
msg = (u32 *)(iop->mem_offset + priv->m);
|
1003 |
|
|
sgl_elem = &msg[priv->tx_count * 3 + 1];
|
1004 |
|
|
|
1005 |
|
|
__raw_writel(I2O_MESSAGE_SIZE((__raw_readl(msg)>>16) + 3) | 1<<12 | SGL_OFFSET_4, msg);
|
1006 |
|
|
__raw_writel(__raw_readl(sgl_elem-3) & 0x7FFFFFFF, sgl_elem-3); /* clear LE flag */
|
1007 |
|
|
__raw_writel(0xD5000000 | skb->len, sgl_elem);
|
1008 |
|
|
__raw_writel((u32)skb, sgl_elem+1);
|
1009 |
|
|
__raw_writel(virt_to_bus(skb->data), sgl_elem+2);
|
1010 |
|
|
}
|
1011 |
|
|
|
1012 |
|
|
/* If tx is in immediate mode or frame is full, send now */
|
1013 |
|
|
|
1014 |
|
|
if (!(priv->tx_batch_mode & 0x01) || priv->tx_count == priv->sgl_max) {
|
1015 |
|
|
dev->trans_start = jiffies;
|
1016 |
|
|
i2o_post_message(iop, priv->m);
|
1017 |
|
|
dprintk(KERN_DEBUG "%s: %d packets sent.\n", dev->name, priv->tx_count);
|
1018 |
|
|
priv->tx_count = 0;
|
1019 |
|
|
}
|
1020 |
|
|
|
1021 |
|
|
/* If DDMs TxMaxPktOut reached, stop queueing layer to send more */
|
1022 |
|
|
|
1023 |
|
|
if (atomic_read(&priv->tx_out) >= priv->tx_max_out)
|
1024 |
|
|
netif_stop_queue(dev);
|
1025 |
|
|
|
1026 |
|
|
spin_unlock_irq(&priv->tx_lock);
|
1027 |
|
|
return 0;
|
1028 |
|
|
}
|
1029 |
|
|
|
1030 |
|
|
/*
|
1031 |
|
|
* i2o_lan_get_stats(): Fill in the statistics.
|
1032 |
|
|
*/
|
1033 |
|
|
static struct net_device_stats *i2o_lan_get_stats(struct net_device *dev)
|
1034 |
|
|
{
|
1035 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
1036 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
1037 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
1038 |
|
|
u64 val64[16];
|
1039 |
|
|
u64 supported_group[4] = { 0, 0, 0, 0 };
|
1040 |
|
|
|
1041 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0100, -1, val64,
|
1042 |
|
|
sizeof(val64)) < 0)
|
1043 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_HISTORICAL_STATS.\n", dev->name);
|
1044 |
|
|
else {
|
1045 |
|
|
dprintk(KERN_DEBUG "%s: LAN_HISTORICAL_STATS queried.\n", dev->name);
|
1046 |
|
|
priv->stats.tx_packets = val64[0];
|
1047 |
|
|
priv->stats.tx_bytes = val64[1];
|
1048 |
|
|
priv->stats.rx_packets = val64[2];
|
1049 |
|
|
priv->stats.rx_bytes = val64[3];
|
1050 |
|
|
priv->stats.tx_errors = val64[4];
|
1051 |
|
|
priv->stats.rx_errors = val64[5];
|
1052 |
|
|
priv->stats.rx_dropped = val64[6];
|
1053 |
|
|
}
|
1054 |
|
|
|
1055 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0180, -1,
|
1056 |
|
|
&supported_group, sizeof(supported_group)) < 0)
|
1057 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_SUPPORTED_OPTIONAL_HISTORICAL_STATS.\n", dev->name);
|
1058 |
|
|
|
1059 |
|
|
if (supported_group[2]) {
|
1060 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0183, -1,
|
1061 |
|
|
val64, sizeof(val64)) < 0)
|
1062 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_OPTIONAL_RX_HISTORICAL_STATS.\n", dev->name);
|
1063 |
|
|
else {
|
1064 |
|
|
dprintk(KERN_DEBUG "%s: LAN_OPTIONAL_RX_HISTORICAL_STATS queried.\n", dev->name);
|
1065 |
|
|
priv->stats.multicast = val64[4];
|
1066 |
|
|
priv->stats.rx_length_errors = val64[10];
|
1067 |
|
|
priv->stats.rx_crc_errors = val64[0];
|
1068 |
|
|
}
|
1069 |
|
|
}
|
1070 |
|
|
|
1071 |
|
|
if (i2o_dev->lct_data.sub_class == I2O_LAN_ETHERNET) {
|
1072 |
|
|
u64 supported_stats = 0;
|
1073 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0200, -1,
|
1074 |
|
|
val64, sizeof(val64)) < 0)
|
1075 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_802_3_HISTORICAL_STATS.\n", dev->name);
|
1076 |
|
|
else {
|
1077 |
|
|
dprintk(KERN_DEBUG "%s: LAN_802_3_HISTORICAL_STATS queried.\n", dev->name);
|
1078 |
|
|
priv->stats.transmit_collision = val64[1] + val64[2];
|
1079 |
|
|
priv->stats.rx_frame_errors = val64[0];
|
1080 |
|
|
priv->stats.tx_carrier_errors = val64[6];
|
1081 |
|
|
}
|
1082 |
|
|
|
1083 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0280, -1,
|
1084 |
|
|
&supported_stats, sizeof(supported_stats)) < 0)
|
1085 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_SUPPORTED_802_3_HISTORICAL_STATS.\n", dev->name);
|
1086 |
|
|
|
1087 |
|
|
if (supported_stats != 0) {
|
1088 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0281, -1,
|
1089 |
|
|
val64, sizeof(val64)) < 0)
|
1090 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_OPTIONAL_802_3_HISTORICAL_STATS.\n", dev->name);
|
1091 |
|
|
else {
|
1092 |
|
|
dprintk(KERN_DEBUG "%s: LAN_OPTIONAL_802_3_HISTORICAL_STATS queried.\n", dev->name);
|
1093 |
|
|
if (supported_stats & 0x1)
|
1094 |
|
|
priv->stats.rx_over_errors = val64[0];
|
1095 |
|
|
if (supported_stats & 0x4)
|
1096 |
|
|
priv->stats.tx_heartbeat_errors = val64[2];
|
1097 |
|
|
}
|
1098 |
|
|
}
|
1099 |
|
|
}
|
1100 |
|
|
|
1101 |
|
|
#ifdef CONFIG_TR
|
1102 |
|
|
if (i2o_dev->lct_data.sub_class == I2O_LAN_TR) {
|
1103 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0300, -1,
|
1104 |
|
|
val64, sizeof(val64)) < 0)
|
1105 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_802_5_HISTORICAL_STATS.\n", dev->name);
|
1106 |
|
|
else {
|
1107 |
|
|
struct tr_statistics *stats =
|
1108 |
|
|
(struct tr_statistics *)&priv->stats;
|
1109 |
|
|
dprintk(KERN_DEBUG "%s: LAN_802_5_HISTORICAL_STATS queried.\n", dev->name);
|
1110 |
|
|
|
1111 |
|
|
stats->line_errors = val64[0];
|
1112 |
|
|
stats->internal_errors = val64[7];
|
1113 |
|
|
stats->burst_errors = val64[4];
|
1114 |
|
|
stats->A_C_errors = val64[2];
|
1115 |
|
|
stats->abort_delimiters = val64[3];
|
1116 |
|
|
stats->lost_frames = val64[1];
|
1117 |
|
|
/* stats->recv_congest_count = ?; FIXME ??*/
|
1118 |
|
|
stats->frame_copied_errors = val64[5];
|
1119 |
|
|
stats->frequency_errors = val64[6];
|
1120 |
|
|
stats->token_errors = val64[9];
|
1121 |
|
|
}
|
1122 |
|
|
/* Token Ring optional stats not yet defined */
|
1123 |
|
|
}
|
1124 |
|
|
#endif
|
1125 |
|
|
|
1126 |
|
|
#ifdef CONFIG_FDDI
|
1127 |
|
|
if (i2o_dev->lct_data.sub_class == I2O_LAN_FDDI) {
|
1128 |
|
|
if (i2o_query_scalar(iop, i2o_dev->lct_data.tid, 0x0400, -1,
|
1129 |
|
|
val64, sizeof(val64)) < 0)
|
1130 |
|
|
printk(KERN_INFO "%s: Unable to query LAN_FDDI_HISTORICAL_STATS.\n", dev->name);
|
1131 |
|
|
else {
|
1132 |
|
|
dprintk(KERN_DEBUG "%s: LAN_FDDI_HISTORICAL_STATS queried.\n", dev->name);
|
1133 |
|
|
priv->stats.smt_cf_state = val64[0];
|
1134 |
|
|
memcpy(priv->stats.mac_upstream_nbr, &val64[1], FDDI_K_ALEN);
|
1135 |
|
|
memcpy(priv->stats.mac_downstream_nbr, &val64[2], FDDI_K_ALEN);
|
1136 |
|
|
priv->stats.mac_error_cts = val64[3];
|
1137 |
|
|
priv->stats.mac_lost_cts = val64[4];
|
1138 |
|
|
priv->stats.mac_rmt_state = val64[5];
|
1139 |
|
|
memcpy(priv->stats.port_lct_fail_cts, &val64[6], 8);
|
1140 |
|
|
memcpy(priv->stats.port_lem_reject_cts, &val64[7], 8);
|
1141 |
|
|
memcpy(priv->stats.port_lem_cts, &val64[8], 8);
|
1142 |
|
|
memcpy(priv->stats.port_pcm_state, &val64[9], 8);
|
1143 |
|
|
}
|
1144 |
|
|
/* FDDI optional stats not yet defined */
|
1145 |
|
|
}
|
1146 |
|
|
#endif
|
1147 |
|
|
|
1148 |
|
|
#ifdef CONFIG_NET_FC
|
1149 |
|
|
/* Fibre Channel Statistics not yet defined in 1.53 nor 2.0 */
|
1150 |
|
|
#endif
|
1151 |
|
|
|
1152 |
|
|
return (struct net_device_stats *)&priv->stats;
|
1153 |
|
|
}
|
1154 |
|
|
|
1155 |
|
|
/*
|
1156 |
|
|
* i2o_lan_set_mc_filter(): Post a request to set multicast filter.
|
1157 |
|
|
*/
|
1158 |
|
|
int i2o_lan_set_mc_filter(struct net_device *dev, u32 filter_mask)
|
1159 |
|
|
{
|
1160 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
1161 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
1162 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
1163 |
|
|
u32 msg[10];
|
1164 |
|
|
|
1165 |
|
|
msg[0] = TEN_WORD_MSG_SIZE | SGL_OFFSET_5;
|
1166 |
|
|
msg[1] = I2O_CMD_UTIL_PARAMS_SET << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid;
|
1167 |
|
|
msg[2] = priv->unit << 16 | lan_context;
|
1168 |
|
|
msg[3] = 0x0001 << 16 | 3 ; // TransactionContext: group&field
|
1169 |
|
|
msg[4] = 0;
|
1170 |
|
|
msg[5] = 0xCC000000 | 16; // Immediate data SGL
|
1171 |
|
|
msg[6] = 1; // OperationCount
|
1172 |
|
|
msg[7] = 0x0001<<16 | I2O_PARAMS_FIELD_SET; // Group, Operation
|
1173 |
|
|
msg[8] = 3 << 16 | 1; // FieldIndex, FieldCount
|
1174 |
|
|
msg[9] = filter_mask; // Value
|
1175 |
|
|
|
1176 |
|
|
return i2o_post_this(iop, msg, sizeof(msg));
|
1177 |
|
|
}
|
1178 |
|
|
|
1179 |
|
|
/*
|
1180 |
|
|
* i2o_lan_set_mc_table(): Post a request to set LAN_MULTICAST_MAC_ADDRESS table.
|
1181 |
|
|
*/
|
1182 |
|
|
int i2o_lan_set_mc_table(struct net_device *dev)
|
1183 |
|
|
{
|
1184 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
1185 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
1186 |
|
|
struct i2o_controller *iop = i2o_dev->controller;
|
1187 |
|
|
struct dev_mc_list *mc;
|
1188 |
|
|
u32 msg[10 + 2 * dev->mc_count];
|
1189 |
|
|
u8 *work8 = (u8 *)(msg + 10);
|
1190 |
|
|
|
1191 |
|
|
msg[0] = I2O_MESSAGE_SIZE(10 + 2 * dev->mc_count) | SGL_OFFSET_5;
|
1192 |
|
|
msg[1] = I2O_CMD_UTIL_PARAMS_SET << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid;
|
1193 |
|
|
msg[2] = priv->unit << 16 | lan_context; // InitiatorContext
|
1194 |
|
|
msg[3] = 0x0002 << 16 | (u16)-1; // TransactionContext
|
1195 |
|
|
msg[4] = 0; // OperationFlags
|
1196 |
|
|
msg[5] = 0xCC000000 | (16 + 8 * dev->mc_count); // Immediate data SGL
|
1197 |
|
|
msg[6] = 2; // OperationCount
|
1198 |
|
|
msg[7] = 0x0002 << 16 | I2O_PARAMS_TABLE_CLEAR; // Group, Operation
|
1199 |
|
|
msg[8] = 0x0002 << 16 | I2O_PARAMS_ROW_ADD; // Group, Operation
|
1200 |
|
|
msg[9] = dev->mc_count << 16 | (u16)-1; // RowCount, FieldCount
|
1201 |
|
|
|
1202 |
|
|
for (mc = dev->mc_list; mc ; mc = mc->next, work8 += 8) {
|
1203 |
|
|
memset(work8, 0, 8);
|
1204 |
|
|
memcpy(work8, mc->dmi_addr, mc->dmi_addrlen); // Values
|
1205 |
|
|
}
|
1206 |
|
|
|
1207 |
|
|
return i2o_post_this(iop, msg, sizeof(msg));
|
1208 |
|
|
}
|
1209 |
|
|
|
1210 |
|
|
/*
|
1211 |
|
|
* i2o_lan_set_multicast_list(): Enable a network device to receive packets
|
1212 |
|
|
* not send to the protocol address.
|
1213 |
|
|
*/
|
1214 |
|
|
static void i2o_lan_set_multicast_list(struct net_device *dev)
|
1215 |
|
|
{
|
1216 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
1217 |
|
|
u32 filter_mask;
|
1218 |
|
|
|
1219 |
|
|
if (dev->flags & IFF_PROMISC) {
|
1220 |
|
|
filter_mask = 0x00000002;
|
1221 |
|
|
dprintk(KERN_INFO "%s: Enabling promiscuous mode...\n", dev->name);
|
1222 |
|
|
} else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > priv->max_size_mc_table) {
|
1223 |
|
|
filter_mask = 0x00000004;
|
1224 |
|
|
dprintk(KERN_INFO "%s: Enabling all multicast mode...\n", dev->name);
|
1225 |
|
|
} else if (dev->mc_count) {
|
1226 |
|
|
filter_mask = 0x00000000;
|
1227 |
|
|
dprintk(KERN_INFO "%s: Enabling multicast mode...\n", dev->name);
|
1228 |
|
|
if (i2o_lan_set_mc_table(dev) < 0)
|
1229 |
|
|
printk(KERN_WARNING "%s: Unable to send MAC table.\n", dev->name);
|
1230 |
|
|
} else {
|
1231 |
|
|
filter_mask = 0x00000300; // Broadcast, Multicast disabled
|
1232 |
|
|
dprintk(KERN_INFO "%s: Enabling unicast mode...\n", dev->name);
|
1233 |
|
|
}
|
1234 |
|
|
|
1235 |
|
|
/* Finally copy new FilterMask to DDM */
|
1236 |
|
|
|
1237 |
|
|
if (i2o_lan_set_mc_filter(dev, filter_mask) < 0)
|
1238 |
|
|
printk(KERN_WARNING "%s: Unable to send MAC FilterMask.\n", dev->name);
|
1239 |
|
|
}
|
1240 |
|
|
|
1241 |
|
|
/*
|
1242 |
|
|
* i2o_lan_change_mtu(): Change maximum transfer unit size.
|
1243 |
|
|
*/
|
1244 |
|
|
static int i2o_lan_change_mtu(struct net_device *dev, int new_mtu)
|
1245 |
|
|
{
|
1246 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
1247 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
1248 |
|
|
u32 max_pkt_size;
|
1249 |
|
|
|
1250 |
|
|
if (i2o_query_scalar(i2o_dev->controller, i2o_dev->lct_data.tid,
|
1251 |
|
|
0x0000, 6, &max_pkt_size, 4) < 0)
|
1252 |
|
|
return -EFAULT;
|
1253 |
|
|
|
1254 |
|
|
if (new_mtu < 68 || new_mtu > 9000 || new_mtu > max_pkt_size)
|
1255 |
|
|
return -EINVAL;
|
1256 |
|
|
|
1257 |
|
|
dev->mtu = new_mtu;
|
1258 |
|
|
|
1259 |
|
|
i2o_lan_suspend(dev); // to SUSPENDED state, return buckets
|
1260 |
|
|
|
1261 |
|
|
while (priv->i2o_fbl_tail >= 0) // free buffered buckets
|
1262 |
|
|
dev_kfree_skb(priv->i2o_fbl[priv->i2o_fbl_tail--]);
|
1263 |
|
|
|
1264 |
|
|
i2o_lan_reset(dev); // to OPERATIONAL state
|
1265 |
|
|
i2o_set_ddm_parameters(dev); // reset some parameters
|
1266 |
|
|
i2o_lan_receive_post(dev); // post new buckets (new size)
|
1267 |
|
|
|
1268 |
|
|
return 0;
|
1269 |
|
|
}
|
1270 |
|
|
|
1271 |
|
|
/* Functions to initialize I2O LAN OSM:
|
1272 |
|
|
======================================*/
|
1273 |
|
|
|
1274 |
|
|
/*
|
1275 |
|
|
* i2o_lan_register_device(): Register LAN class device to kernel.
|
1276 |
|
|
*/
|
1277 |
|
|
struct net_device *i2o_lan_register_device(struct i2o_device *i2o_dev)
|
1278 |
|
|
{
|
1279 |
|
|
struct net_device *dev = NULL;
|
1280 |
|
|
struct i2o_lan_local *priv = NULL;
|
1281 |
|
|
u8 hw_addr[8];
|
1282 |
|
|
u32 tx_max_out = 0;
|
1283 |
|
|
unsigned short (*type_trans)(struct sk_buff *, struct net_device *);
|
1284 |
|
|
void (*unregister_dev)(struct net_device *dev);
|
1285 |
|
|
|
1286 |
|
|
switch (i2o_dev->lct_data.sub_class) {
|
1287 |
|
|
case I2O_LAN_ETHERNET:
|
1288 |
|
|
dev = init_etherdev(NULL, sizeof(struct i2o_lan_local));
|
1289 |
|
|
if (dev == NULL)
|
1290 |
|
|
return NULL;
|
1291 |
|
|
type_trans = eth_type_trans;
|
1292 |
|
|
unregister_dev = unregister_netdev;
|
1293 |
|
|
break;
|
1294 |
|
|
|
1295 |
|
|
#ifdef CONFIG_ANYLAN
|
1296 |
|
|
case I2O_LAN_100VG:
|
1297 |
|
|
printk(KERN_ERR "i2o_lan: 100base VG not yet supported.\n");
|
1298 |
|
|
return NULL;
|
1299 |
|
|
break;
|
1300 |
|
|
#endif
|
1301 |
|
|
|
1302 |
|
|
#ifdef CONFIG_TR
|
1303 |
|
|
case I2O_LAN_TR:
|
1304 |
|
|
dev = init_trdev(NULL, sizeof(struct i2o_lan_local));
|
1305 |
|
|
if (dev==NULL)
|
1306 |
|
|
return NULL;
|
1307 |
|
|
type_trans = tr_type_trans;
|
1308 |
|
|
unregister_dev = unregister_trdev;
|
1309 |
|
|
break;
|
1310 |
|
|
#endif
|
1311 |
|
|
|
1312 |
|
|
#ifdef CONFIG_FDDI
|
1313 |
|
|
case I2O_LAN_FDDI:
|
1314 |
|
|
{
|
1315 |
|
|
int size = sizeof(struct net_device) + sizeof(struct i2o_lan_local);
|
1316 |
|
|
|
1317 |
|
|
dev = (struct net_device *) kmalloc(size, GFP_KERNEL);
|
1318 |
|
|
if (dev == NULL)
|
1319 |
|
|
return NULL;
|
1320 |
|
|
memset((char *)dev, 0, size);
|
1321 |
|
|
dev->priv = (void *)(dev + 1);
|
1322 |
|
|
|
1323 |
|
|
if (dev_alloc_name(dev, "fddi%d") < 0) {
|
1324 |
|
|
printk(KERN_WARNING "i2o_lan: Too many FDDI devices.\n");
|
1325 |
|
|
kfree(dev);
|
1326 |
|
|
return NULL;
|
1327 |
|
|
}
|
1328 |
|
|
type_trans = fddi_type_trans;
|
1329 |
|
|
unregister_dev = (void *)unregister_netdevice;
|
1330 |
|
|
|
1331 |
|
|
fddi_setup(dev);
|
1332 |
|
|
register_netdev(dev);
|
1333 |
|
|
}
|
1334 |
|
|
break;
|
1335 |
|
|
#endif
|
1336 |
|
|
|
1337 |
|
|
#ifdef CONFIG_NET_FC
|
1338 |
|
|
case I2O_LAN_FIBRE_CHANNEL:
|
1339 |
|
|
dev = init_fcdev(NULL, sizeof(struct i2o_lan_local));
|
1340 |
|
|
if (dev == NULL)
|
1341 |
|
|
return NULL;
|
1342 |
|
|
type_trans = NULL;
|
1343 |
|
|
/* FIXME: Move fc_type_trans() from drivers/net/fc/iph5526.c to net/802/fc.c
|
1344 |
|
|
* and export it in include/linux/fcdevice.h
|
1345 |
|
|
* type_trans = fc_type_trans;
|
1346 |
|
|
*/
|
1347 |
|
|
unregister_dev = (void *)unregister_fcdev;
|
1348 |
|
|
break;
|
1349 |
|
|
#endif
|
1350 |
|
|
|
1351 |
|
|
case I2O_LAN_UNKNOWN:
|
1352 |
|
|
default:
|
1353 |
|
|
printk(KERN_ERR "i2o_lan: LAN type 0x%04x not supported.\n",
|
1354 |
|
|
i2o_dev->lct_data.sub_class);
|
1355 |
|
|
return NULL;
|
1356 |
|
|
}
|
1357 |
|
|
|
1358 |
|
|
priv = (struct i2o_lan_local *)dev->priv;
|
1359 |
|
|
priv->i2o_dev = i2o_dev;
|
1360 |
|
|
priv->type_trans = type_trans;
|
1361 |
|
|
priv->sgl_max = (i2o_dev->controller->status_block->inbound_frame_size - 4) / 3;
|
1362 |
|
|
atomic_set(&priv->buckets_out, 0);
|
1363 |
|
|
|
1364 |
|
|
/* Set default values for user configurable parameters */
|
1365 |
|
|
/* Private values are changed via /proc file system */
|
1366 |
|
|
|
1367 |
|
|
priv->max_buckets_out = max_buckets_out;
|
1368 |
|
|
priv->bucket_thresh = bucket_thresh;
|
1369 |
|
|
priv->rx_copybreak = rx_copybreak;
|
1370 |
|
|
priv->tx_batch_mode = tx_batch_mode & 0x03;
|
1371 |
|
|
priv->i2o_event_mask = i2o_event_mask;
|
1372 |
|
|
|
1373 |
|
|
priv->tx_lock = SPIN_LOCK_UNLOCKED;
|
1374 |
|
|
priv->fbl_lock = SPIN_LOCK_UNLOCKED;
|
1375 |
|
|
|
1376 |
|
|
unit++;
|
1377 |
|
|
i2o_landevs[unit] = dev;
|
1378 |
|
|
priv->unit = unit;
|
1379 |
|
|
|
1380 |
|
|
if (i2o_query_scalar(i2o_dev->controller, i2o_dev->lct_data.tid,
|
1381 |
|
|
0x0001, 0, &hw_addr, sizeof(hw_addr)) < 0) {
|
1382 |
|
|
printk(KERN_ERR "%s: Unable to query hardware address.\n", dev->name);
|
1383 |
|
|
unit--;
|
1384 |
|
|
unregister_dev(dev);
|
1385 |
|
|
kfree(dev);
|
1386 |
|
|
return NULL;
|
1387 |
|
|
}
|
1388 |
|
|
dprintk(KERN_DEBUG "%s: hwaddr = %02X:%02X:%02X:%02X:%02X:%02X\n",
|
1389 |
|
|
dev->name, hw_addr[0], hw_addr[1], hw_addr[2], hw_addr[3],
|
1390 |
|
|
hw_addr[4], hw_addr[5]);
|
1391 |
|
|
|
1392 |
|
|
dev->addr_len = 6;
|
1393 |
|
|
memcpy(dev->dev_addr, hw_addr, 6);
|
1394 |
|
|
|
1395 |
|
|
if (i2o_query_scalar(i2o_dev->controller, i2o_dev->lct_data.tid,
|
1396 |
|
|
0x0007, 2, &tx_max_out, sizeof(tx_max_out)) < 0) {
|
1397 |
|
|
printk(KERN_ERR "%s: Unable to query max TX queue.\n", dev->name);
|
1398 |
|
|
unit--;
|
1399 |
|
|
unregister_dev(dev);
|
1400 |
|
|
kfree(dev);
|
1401 |
|
|
return NULL;
|
1402 |
|
|
}
|
1403 |
|
|
dprintk(KERN_INFO "%s: Max TX Outstanding = %d.\n", dev->name, tx_max_out);
|
1404 |
|
|
priv->tx_max_out = tx_max_out;
|
1405 |
|
|
atomic_set(&priv->tx_out, 0);
|
1406 |
|
|
priv->tx_count = 0;
|
1407 |
|
|
|
1408 |
|
|
INIT_LIST_HEAD(&priv->i2o_batch_send_task.list);
|
1409 |
|
|
priv->i2o_batch_send_task.sync = 0;
|
1410 |
|
|
priv->i2o_batch_send_task.routine = (void *)i2o_lan_batch_send;
|
1411 |
|
|
priv->i2o_batch_send_task.data = (void *)dev;
|
1412 |
|
|
|
1413 |
|
|
dev->open = i2o_lan_open;
|
1414 |
|
|
dev->stop = i2o_lan_close;
|
1415 |
|
|
dev->get_stats = i2o_lan_get_stats;
|
1416 |
|
|
dev->set_multicast_list = i2o_lan_set_multicast_list;
|
1417 |
|
|
dev->tx_timeout = i2o_lan_tx_timeout;
|
1418 |
|
|
dev->watchdog_timeo = I2O_LAN_TX_TIMEOUT;
|
1419 |
|
|
|
1420 |
|
|
#ifdef CONFIG_NET_FC
|
1421 |
|
|
if (i2o_dev->lct_data.sub_class == I2O_LAN_FIBRE_CHANNEL)
|
1422 |
|
|
dev->hard_start_xmit = i2o_lan_sdu_send;
|
1423 |
|
|
else
|
1424 |
|
|
#endif
|
1425 |
|
|
dev->hard_start_xmit = i2o_lan_packet_send;
|
1426 |
|
|
|
1427 |
|
|
if (i2o_dev->lct_data.sub_class == I2O_LAN_ETHERNET)
|
1428 |
|
|
dev->change_mtu = i2o_lan_change_mtu;
|
1429 |
|
|
|
1430 |
|
|
return dev;
|
1431 |
|
|
}
|
1432 |
|
|
|
1433 |
|
|
static int __init i2o_lan_init(void)
|
1434 |
|
|
{
|
1435 |
|
|
struct net_device *dev;
|
1436 |
|
|
int i;
|
1437 |
|
|
|
1438 |
|
|
printk(KERN_INFO "I2O LAN OSM (C) 1999 University of Helsinki.\n");
|
1439 |
|
|
|
1440 |
|
|
/* Module params are used as global defaults for private values */
|
1441 |
|
|
|
1442 |
|
|
if (max_buckets_out > I2O_LAN_MAX_BUCKETS_OUT)
|
1443 |
|
|
max_buckets_out = I2O_LAN_MAX_BUCKETS_OUT;
|
1444 |
|
|
if (bucket_thresh > max_buckets_out)
|
1445 |
|
|
bucket_thresh = max_buckets_out;
|
1446 |
|
|
|
1447 |
|
|
/* Install handlers for incoming replies */
|
1448 |
|
|
|
1449 |
|
|
if (i2o_install_handler(&i2o_lan_send_handler) < 0) {
|
1450 |
|
|
printk(KERN_ERR "i2o_lan: Unable to register I2O LAN OSM.\n");
|
1451 |
|
|
return -EINVAL;
|
1452 |
|
|
}
|
1453 |
|
|
lan_send_context = i2o_lan_send_handler.context;
|
1454 |
|
|
|
1455 |
|
|
if (i2o_install_handler(&i2o_lan_receive_handler) < 0) {
|
1456 |
|
|
printk(KERN_ERR "i2o_lan: Unable to register I2O LAN OSM.\n");
|
1457 |
|
|
return -EINVAL;
|
1458 |
|
|
}
|
1459 |
|
|
lan_receive_context = i2o_lan_receive_handler.context;
|
1460 |
|
|
|
1461 |
|
|
if (i2o_install_handler(&i2o_lan_handler) < 0) {
|
1462 |
|
|
printk(KERN_ERR "i2o_lan: Unable to register I2O LAN OSM.\n");
|
1463 |
|
|
return -EINVAL;
|
1464 |
|
|
}
|
1465 |
|
|
lan_context = i2o_lan_handler.context;
|
1466 |
|
|
|
1467 |
|
|
for(i=0; i <= MAX_LAN_CARDS; i++)
|
1468 |
|
|
i2o_landevs[i] = NULL;
|
1469 |
|
|
|
1470 |
|
|
for (i=0; i < MAX_I2O_CONTROLLERS; i++) {
|
1471 |
|
|
struct i2o_controller *iop = i2o_find_controller(i);
|
1472 |
|
|
struct i2o_device *i2o_dev;
|
1473 |
|
|
|
1474 |
|
|
if (iop==NULL)
|
1475 |
|
|
continue;
|
1476 |
|
|
|
1477 |
|
|
for (i2o_dev=iop->devices;i2o_dev != NULL;i2o_dev=i2o_dev->next) {
|
1478 |
|
|
|
1479 |
|
|
if (i2o_dev->lct_data.class_id != I2O_CLASS_LAN)
|
1480 |
|
|
continue;
|
1481 |
|
|
|
1482 |
|
|
/* Make sure device not already claimed by an ISM */
|
1483 |
|
|
if (i2o_dev->lct_data.user_tid != 0xFFF)
|
1484 |
|
|
continue;
|
1485 |
|
|
|
1486 |
|
|
if (unit == MAX_LAN_CARDS) {
|
1487 |
|
|
i2o_unlock_controller(iop);
|
1488 |
|
|
printk(KERN_WARNING "i2o_lan: Too many I2O LAN devices.\n");
|
1489 |
|
|
return -EINVAL;
|
1490 |
|
|
}
|
1491 |
|
|
|
1492 |
|
|
dev = i2o_lan_register_device(i2o_dev);
|
1493 |
|
|
if (dev == NULL) {
|
1494 |
|
|
printk(KERN_ERR "i2o_lan: Unable to register I2O LAN device 0x%04x.\n",
|
1495 |
|
|
i2o_dev->lct_data.sub_class);
|
1496 |
|
|
continue;
|
1497 |
|
|
}
|
1498 |
|
|
|
1499 |
|
|
printk(KERN_INFO "%s: I2O LAN device registered, "
|
1500 |
|
|
"subclass = 0x%04x, unit = %d, tid = %d.\n",
|
1501 |
|
|
dev->name, i2o_dev->lct_data.sub_class,
|
1502 |
|
|
((struct i2o_lan_local *)dev->priv)->unit,
|
1503 |
|
|
i2o_dev->lct_data.tid);
|
1504 |
|
|
}
|
1505 |
|
|
|
1506 |
|
|
i2o_unlock_controller(iop);
|
1507 |
|
|
}
|
1508 |
|
|
|
1509 |
|
|
dprintk(KERN_INFO "%d I2O LAN devices found and registered.\n", unit+1);
|
1510 |
|
|
|
1511 |
|
|
return 0;
|
1512 |
|
|
}
|
1513 |
|
|
|
1514 |
|
|
static void i2o_lan_exit(void)
|
1515 |
|
|
{
|
1516 |
|
|
int i;
|
1517 |
|
|
|
1518 |
|
|
for (i = 0; i <= unit; i++) {
|
1519 |
|
|
struct net_device *dev = i2o_landevs[i];
|
1520 |
|
|
struct i2o_lan_local *priv = (struct i2o_lan_local *)dev->priv;
|
1521 |
|
|
struct i2o_device *i2o_dev = priv->i2o_dev;
|
1522 |
|
|
|
1523 |
|
|
switch (i2o_dev->lct_data.sub_class) {
|
1524 |
|
|
case I2O_LAN_ETHERNET:
|
1525 |
|
|
unregister_netdev(dev);
|
1526 |
|
|
break;
|
1527 |
|
|
#ifdef CONFIG_FDDI
|
1528 |
|
|
case I2O_LAN_FDDI:
|
1529 |
|
|
unregister_netdevice(dev);
|
1530 |
|
|
break;
|
1531 |
|
|
#endif
|
1532 |
|
|
#ifdef CONFIG_TR
|
1533 |
|
|
case I2O_LAN_TR:
|
1534 |
|
|
unregister_trdev(dev);
|
1535 |
|
|
break;
|
1536 |
|
|
#endif
|
1537 |
|
|
#ifdef CONFIG_NET_FC
|
1538 |
|
|
case I2O_LAN_FIBRE_CHANNEL:
|
1539 |
|
|
unregister_fcdev(dev);
|
1540 |
|
|
break;
|
1541 |
|
|
#endif
|
1542 |
|
|
default:
|
1543 |
|
|
printk(KERN_WARNING "%s: Spurious I2O LAN subclass 0x%08x.\n",
|
1544 |
|
|
dev->name, i2o_dev->lct_data.sub_class);
|
1545 |
|
|
}
|
1546 |
|
|
|
1547 |
|
|
dprintk(KERN_INFO "%s: I2O LAN device unregistered.\n",
|
1548 |
|
|
dev->name);
|
1549 |
|
|
kfree(dev);
|
1550 |
|
|
}
|
1551 |
|
|
|
1552 |
|
|
i2o_remove_handler(&i2o_lan_handler);
|
1553 |
|
|
i2o_remove_handler(&i2o_lan_send_handler);
|
1554 |
|
|
i2o_remove_handler(&i2o_lan_receive_handler);
|
1555 |
|
|
}
|
1556 |
|
|
|
1557 |
|
|
EXPORT_NO_SYMBOLS;
|
1558 |
|
|
|
1559 |
|
|
MODULE_AUTHOR("University of Helsinki, Department of Computer Science");
|
1560 |
|
|
MODULE_DESCRIPTION("I2O Lan OSM");
|
1561 |
|
|
MODULE_LICENSE("GPL");
|
1562 |
|
|
|
1563 |
|
|
|
1564 |
|
|
MODULE_PARM(max_buckets_out, "1-" __MODULE_STRING(I2O_LAN_MAX_BUCKETS_OUT) "i");
|
1565 |
|
|
MODULE_PARM_DESC(max_buckets_out, "Total number of buckets to post (1-)");
|
1566 |
|
|
MODULE_PARM(bucket_thresh, "1-" __MODULE_STRING(I2O_LAN_MAX_BUCKETS_OUT) "i");
|
1567 |
|
|
MODULE_PARM_DESC(bucket_thresh, "Bucket post threshold (1-)");
|
1568 |
|
|
MODULE_PARM(rx_copybreak, "1-" "i");
|
1569 |
|
|
MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy only small frames (1-)");
|
1570 |
|
|
MODULE_PARM(tx_batch_mode, "0-2" "i");
|
1571 |
|
|
MODULE_PARM_DESC(tx_batch_mode, "0=Send immediatelly, 1=Send in batches, 2=Switch automatically");
|
1572 |
|
|
|
1573 |
|
|
module_init(i2o_lan_init);
|
1574 |
|
|
module_exit(i2o_lan_exit);
|