1 /* $Id: icn.h,v 1.30.6.5 2001/09/23 22:24:55 kai Exp $
3 * ISDN lowlevel-module for the ICN active ISDN-Card.
5 * Copyright 1994 by Fritz Elfert (fritz@isdn4linux.de)
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
15 #define ICN_IOCTL_SETMMIO 0
16 #define ICN_IOCTL_GETMMIO 1
17 #define ICN_IOCTL_SETPORT 2
18 #define ICN_IOCTL_GETPORT 3
19 #define ICN_IOCTL_LOADBOOT 4
20 #define ICN_IOCTL_LOADPROTO 5
21 #define ICN_IOCTL_LEASEDCFG 6
22 #define ICN_IOCTL_GETDOUBLE 7
23 #define ICN_IOCTL_DEBUGVAR 8
24 #define ICN_IOCTL_ADDCARD 9
26 /* Struct for adding new cards */
27 typedef struct icn_cdef {
33 #if defined(__KERNEL__) || defined(__DEBUGVAR__)
38 #include <linux/version.h>
39 #include <linux/errno.h>
41 #include <linux/major.h>
43 #include <linux/kernel.h>
44 #include <linux/signal.h>
45 #include <linux/slab.h>
47 #include <linux/mman.h>
48 #include <linux/ioport.h>
49 #include <linux/timer.h>
50 #include <linux/wait.h>
51 #include <linux/delay.h>
52 #include <linux/isdnif.h>
54 #endif /* __KERNEL__ */
56 /* some useful macros for debugging */
58 #define OUTB_P(v,p) {printk(KERN_DEBUG "icn: outb_p(0x%02x,0x%03x)\n",v,p); outb_p(v,p);}
63 /* Defaults for Port-Address and shared-memory */
64 #define ICN_BASEADDR 0x320
65 #define ICN_PORTLEN (0x04)
66 #define ICN_MEMADDR 0x0d0000
68 #define ICN_FLAGS_B1ACTIVE 1 /* B-Channel-1 is open */
69 #define ICN_FLAGS_B2ACTIVE 2 /* B-Channel-2 is open */
70 #define ICN_FLAGS_RUNNING 4 /* Cards driver activated */
71 #define ICN_FLAGS_RBTIMER 8 /* cyclic scheduling of B-Channel-poll */
73 #define ICN_BOOT_TIMEOUT1 1000 /* Delay for Boot-download (msecs) */
75 #define ICN_TIMER_BCREAD (HZ/100) /* B-Channel poll-cycle */
76 #define ICN_TIMER_DCREAD (HZ/2) /* D-Channel poll-cycle */
78 #define ICN_CODE_STAGE1 4096 /* Size of bootcode */
79 #define ICN_CODE_STAGE2 65536 /* Size of protocol-code */
81 #define ICN_MAX_SQUEUE 8000 /* Max. outstanding send-data (2* hw-buf.) */
82 #define ICN_FRAGSIZE (250) /* Max. size of send-fragments */
83 #define ICN_BCH 2 /* Number of supported channels per card */
85 /* type-definitions for accessing the mmap-io-areas */
87 #define SHM_DCTL_OFFSET (0) /* Offset to data-controlstructures in shm */
88 #define SHM_CCTL_OFFSET (0x1d2) /* Offset to comm-controlstructures in shm */
89 #define SHM_CBUF_OFFSET (0x200) /* Offset to comm-buffers in shm */
90 #define SHM_DBUF_OFFSET (0x2000) /* Offset to data-buffers in shm */
93 * Layout of card's data buffers
96 unsigned char length; /* Bytecount of fragment (max 250) */
97 unsigned char endflag; /* 0=last frag., 0xff=frag. continued */
98 unsigned char data[ICN_FRAGSIZE]; /* The data */
99 /* Fill to 256 bytes */
100 char unused[0x100 - ICN_FRAGSIZE - 2];
104 * Layout of card's shared memory
108 unsigned char scns; /* Index to free SendFrag. */
109 unsigned char scnr; /* Index to active SendFrag READONLY */
110 unsigned char ecns; /* Index to free RcvFrag. READONLY */
111 unsigned char ecnr; /* Index to valid RcvFrag */
113 unsigned short fuell1; /* Internal Buf Bytecount */
116 char unused[SHM_CCTL_OFFSET];
117 unsigned char iopc_i; /* Read-Ptr Status-Queue READONLY */
118 unsigned char iopc_o; /* Write-Ptr Status-Queue */
119 unsigned char pcio_i; /* Write-Ptr Command-Queue */
120 unsigned char pcio_o; /* Read-Ptr Command Queue READONLY */
123 char unused[SHM_CBUF_OFFSET];
124 unsigned char pcio_buf[0x100]; /* Ring-Buffer Command-Queue */
125 unsigned char iopc_buf[0x100]; /* Ring-Buffer Status-Queue */
128 char unused[SHM_DBUF_OFFSET];
129 frag_buf receive_buf[0x10];
130 frag_buf send_buf[0x10];
135 * Per card driver data
137 typedef struct icn_card {
138 struct icn_card *next; /* Pointer to next device struct */
139 struct icn_card *other; /* Pointer to other card for ICN4B */
140 unsigned short port; /* Base-port-address */
141 int myid; /* Driver-Nr. assigned by linklevel */
142 int rvalid; /* IO-portregion has been requested */
143 int leased; /* Flag: This Adapter is connected */
144 /* to a leased line */
145 unsigned short flags; /* Statusflags */
146 int doubleS0; /* Flag: ICN4B */
147 int secondhalf; /* Flag: Second half of a doubleS0 */
148 int fw_rev; /* Firmware revision loaded */
149 int ptype; /* Protocol type (1TR6 or Euro) */
150 struct timer_list st_timer; /* Timer for Status-Polls */
151 struct timer_list rb_timer; /* Timer for B-Channel-Polls */
152 u_char rcvbuf[ICN_BCH][4096]; /* B-Channel-Receive-Buffers */
153 int rcvidx[ICN_BCH]; /* Index for above buffers */
154 int l2_proto[ICN_BCH]; /* Current layer-2-protocol */
155 isdn_if interface; /* Interface to upper layer */
156 int iptr; /* Index to imsg-buffer */
157 char imsg[60]; /* Internal buf for status-parsing */
158 char msg_buf[2048]; /* Buffer for status-messages */
159 char *msg_buf_write; /* Writepointer for statusbuffer */
160 char *msg_buf_read; /* Readpointer for statusbuffer */
161 char *msg_buf_end; /* Pointer to end of statusbuffer */
162 int sndcount[ICN_BCH]; /* Byte-counters for B-Ch.-send */
163 int xlen[ICN_BCH]; /* Byte-counters/Flags for sent-ACK */
164 struct sk_buff *xskb[ICN_BCH]; /* Current transmitted skb */
165 struct sk_buff_head spqueue[ICN_BCH]; /* Sendqueue */
166 char regname[35]; /* Name used for request_region */
167 u_char xmit_lock[ICN_BCH]; /* Semaphore for pollbchan_send()*/
168 spinlock_t lock; /* protect critical operations */
174 typedef struct icn_dev {
175 spinlock_t devlock; /* spinlock to protect this struct */
176 unsigned long memaddr; /* Address of memory mapped buffers */
177 icn_shmem __iomem *shmem; /* Pointer to memory-mapped-buffers */
178 int mvalid; /* IO-shmem has been requested */
179 int channel; /* Currently mapped channel */
180 struct icn_card *mcard; /* Currently mapped card */
181 int chanlock; /* Semaphore for channel-mapping */
182 int firstload; /* Flag: firmware never loaded */
185 typedef icn_dev *icn_devptr;
189 static icn_card *cards = (icn_card *) 0;
190 static u_char chan2bank[] =
191 {0, 4, 8, 12}; /* for icn_map_channel() */
195 #endif /* __KERNEL__ */
199 /* Macros for accessing ports */
200 #define ICN_CFG (card->port)
201 #define ICN_MAPRAM (card->port+1)
202 #define ICN_RUN (card->port+2)
203 #define ICN_BANK (card->port+3)
205 /* Return true, if there is a free transmit-buffer */
206 #define sbfree (((readb(&dev.shmem->data_control.scns)+1) & 0xf) != \
207 readb(&dev.shmem->data_control.scnr))
209 /* Switch to next transmit-buffer */
210 #define sbnext (writeb((readb(&dev.shmem->data_control.scns)+1) & 0xf, \
211 &dev.shmem->data_control.scns))
213 /* Shortcuts for transmit-buffer-access */
214 #define sbuf_n dev.shmem->data_control.scns
215 #define sbuf_d dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].data
216 #define sbuf_l dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].length
217 #define sbuf_f dev.shmem->data_buffers.send_buf[readb(&sbuf_n)].endflag
219 /* Return true, if there is receive-data is available */
220 #define rbavl (readb(&dev.shmem->data_control.ecnr) != \
221 readb(&dev.shmem->data_control.ecns))
223 /* Switch to next receive-buffer */
224 #define rbnext (writeb((readb(&dev.shmem->data_control.ecnr)+1) & 0xf, \
225 &dev.shmem->data_control.ecnr))
227 /* Shortcuts for receive-buffer-access */
228 #define rbuf_n dev.shmem->data_control.ecnr
229 #define rbuf_d dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].data
230 #define rbuf_l dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].length
231 #define rbuf_f dev.shmem->data_buffers.receive_buf[readb(&rbuf_n)].endflag
233 /* Shortcuts for command-buffer-access */
234 #define cmd_o (dev.shmem->comm_control.pcio_o)
235 #define cmd_i (dev.shmem->comm_control.pcio_i)
237 /* Return free space in command-buffer */
238 #define cmd_free ((readb(&cmd_i)>=readb(&cmd_o))? \
239 0x100-readb(&cmd_i)+readb(&cmd_o): \
240 readb(&cmd_o)-readb(&cmd_i))
242 /* Shortcuts for message-buffer-access */
243 #define msg_o (dev.shmem->comm_control.iopc_o)
244 #define msg_i (dev.shmem->comm_control.iopc_i)
246 /* Return length of Message, if avail. */
247 #define msg_avail ((readb(&msg_o)>readb(&msg_i))? \
248 0x100-readb(&msg_o)+readb(&msg_i): \
249 readb(&msg_i)-readb(&msg_o))
251 #define CID (card->interface.id)
253 #endif /* defined(__KERNEL__) || defined(__DEBUGVAR__) */