2 * $Id: ctcmain.h,v 1.4 2005/03/24 09:04:17 mschwide Exp $
4 * CTC / ESCON network driver
6 * Copyright (C) 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
8 Peter Tiedemann (ptiedem@de.ibm.com)
12 * - Principles of Operation (IBM doc#: SA22-7201-06)
13 * - Common IO/-Device Commands and Self Description (IBM doc#: SA22-7204-02)
14 * - Common IO/-Device Commands and Self Description (IBM doc#: SN22-5535)
15 * - ESCON Channel-to-Channel Adapter (IBM doc#: SA22-7203-00)
16 * - ESCON I/O Interface (IBM doc#: SA22-7202-029
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2, or (at your option)
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 * RELEASE-TAG: CTC/ESCON network driver $Revision: 1.4 $
39 #include <asm/ccwdev.h>
40 #include <asm/ccwgroup.h>
48 * CCW commands, used in this driver.
50 #define CCW_CMD_WRITE 0x01
51 #define CCW_CMD_READ 0x02
52 #define CCW_CMD_SET_EXTENDED 0xc3
53 #define CCW_CMD_PREPARE 0xe3
55 #define CTC_PROTO_S390 0
56 #define CTC_PROTO_LINUX 1
57 #define CTC_PROTO_LINUX_TTY 2
58 #define CTC_PROTO_OS390 3
59 #define CTC_PROTO_MAX 3
61 #define CTC_BUFSIZE_LIMIT 65535
62 #define CTC_BUFSIZE_DEFAULT 32768
64 #define CTC_TIMEOUT_5SEC 5000
66 #define CTC_INITIAL_BLOCKLEN 2
71 #define CTC_ID_SIZE BUS_ID_SIZE+3
75 unsigned long maxmulti;
76 unsigned long maxcqueue;
77 unsigned long doios_single;
78 unsigned long doios_multi;
80 unsigned long tx_time;
81 struct timespec send_stamp;
85 * Definition of one channel
90 * Pointer to next channel in list.
94 struct ccw_device *cdev;
97 * Type of this channel.
98 * CTC/A or Escon for valid channels.
100 enum channel_types type;
103 * Misc. flags. See CHANNEL_FLAGS_... below
108 * The protocol of this channel
113 * I/O and irq related stuff
124 * Transmit/Receive buffer.
126 struct sk_buff *trans_skb;
129 * Universal I/O queue.
131 struct sk_buff_head io_queue;
134 * TX queue for collecting skb's during busy.
136 struct sk_buff_head collect_queue;
139 * Amount of data in collect_queue.
144 * spinlock for collect_queue and collect_len
146 spinlock_t collect_lock;
149 * Timer for detecting unresposive
155 * Retry counter for misc. operations.
160 * The finite state machine of this channel
165 * The corresponding net_device this channel
168 struct net_device *netdev;
170 struct ctc_profile prof;
172 unsigned char *trans_skb_data;
177 #define CHANNEL_FLAGS_READ 0
178 #define CHANNEL_FLAGS_WRITE 1
179 #define CHANNEL_FLAGS_INUSE 2
180 #define CHANNEL_FLAGS_BUFSIZE_CHANGED 4
181 #define CHANNEL_FLAGS_FAILED 8
182 #define CHANNEL_FLAGS_WAITIRQ 16
183 #define CHANNEL_FLAGS_RWMASK 1
184 #define CHANNEL_DIRECTION(f) (f & CHANNEL_FLAGS_RWMASK)
186 #define LOG_FLAG_ILLEGALPKT 1
187 #define LOG_FLAG_ILLEGALSIZE 2
188 #define LOG_FLAG_OVERRUN 4
189 #define LOG_FLAG_NOMEM 8
191 #define CTC_LOGLEVEL_INFO 1
192 #define CTC_LOGLEVEL_NOTICE 2
193 #define CTC_LOGLEVEL_WARN 4
194 #define CTC_LOGLEVEL_EMERG 8
195 #define CTC_LOGLEVEL_ERR 16
196 #define CTC_LOGLEVEL_DEBUG 32
197 #define CTC_LOGLEVEL_CRIT 64
199 #define CTC_LOGLEVEL_DEFAULT \
200 (CTC_LOGLEVEL_INFO | CTC_LOGLEVEL_NOTICE | CTC_LOGLEVEL_WARN | CTC_LOGLEVEL_CRIT)
202 #define CTC_LOGLEVEL_MAX ((CTC_LOGLEVEL_CRIT<<1)-1)
204 #define ctc_pr_debug(fmt, arg...) \
205 do { if (loglevel & CTC_LOGLEVEL_DEBUG) printk(KERN_DEBUG fmt,##arg); } while (0)
207 #define ctc_pr_info(fmt, arg...) \
208 do { if (loglevel & CTC_LOGLEVEL_INFO) printk(KERN_INFO fmt,##arg); } while (0)
210 #define ctc_pr_notice(fmt, arg...) \
211 do { if (loglevel & CTC_LOGLEVEL_NOTICE) printk(KERN_NOTICE fmt,##arg); } while (0)
213 #define ctc_pr_warn(fmt, arg...) \
214 do { if (loglevel & CTC_LOGLEVEL_WARN) printk(KERN_WARNING fmt,##arg); } while (0)
216 #define ctc_pr_emerg(fmt, arg...) \
217 do { if (loglevel & CTC_LOGLEVEL_EMERG) printk(KERN_EMERG fmt,##arg); } while (0)
219 #define ctc_pr_err(fmt, arg...) \
220 do { if (loglevel & CTC_LOGLEVEL_ERR) printk(KERN_ERR fmt,##arg); } while (0)
222 #define ctc_pr_crit(fmt, arg...) \
223 do { if (loglevel & CTC_LOGLEVEL_CRIT) printk(KERN_CRIT fmt,##arg); } while (0)
226 struct net_device_stats stats;
229 * The finite state machine of this interface.
233 * The protocol of this device
237 * Timer for restarting after I/O Errors
239 fsm_timer restart_timer;
243 struct channel *channel[2];
247 * Definition of our link level header.
254 #define LL_HEADER_LENGTH (sizeof(struct ll_header))
257 * Compatibility macros for busy handling
258 * of network devices.
260 static __inline__ void
261 ctc_clear_busy(struct net_device * dev)
263 clear_bit(0, &(((struct ctc_priv *) dev->priv)->tbusy));
264 if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
265 netif_wake_queue(dev);
268 static __inline__ int
269 ctc_test_and_set_busy(struct net_device * dev)
271 if (((struct ctc_priv *)dev->priv)->protocol != CTC_PROTO_LINUX_TTY)
272 netif_stop_queue(dev);
273 return test_and_set_bit(0, &((struct ctc_priv *) dev->priv)->tbusy);