2 * Copyright 2003 Digi International (www.digi.com)
3 * Scott H Kilau <Scott_Kilau at digi dot com>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
13 * PURPOSE. See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
21 ************************************************************************
22 *** FEP Version 5 dependent definitions
23 ************************************************************************/
28 /************************************************************************
30 ************************************************************************/
31 #define START 0x0004L /* Execution start address */
33 #define CMDBUF 0x0d10L /* Command (cm_t) structure offset */
34 #define CMDSTART 0x0400L /* Start of command buffer */
35 #define CMDMAX 0x0800L /* End of command buffer */
37 #define EVBUF 0x0d18L /* Event (ev_t) structure */
38 #define EVSTART 0x0800L /* Start of event buffer */
39 #define EVMAX 0x0c00L /* End of event buffer */
40 #define FEP5_PLUS 0x0E40 /* ASCII '5' and ASCII 'A' is here */
41 #define ECS_SEG 0x0E44 /* Segment of the extended channel structure */
42 #define LINE_SPEED 0x10 /* Offset into ECS_SEG for line speed */
43 /* if the fep has extended capabilities */
45 /* BIOS MAGIC SPOTS */
46 #define ERROR 0x0C14L /* BIOS error code */
47 #define SEQUENCE 0x0C12L /* BIOS sequence indicator */
48 #define POSTAREA 0x0C00L /* POST complete message area */
51 #define FEPSTAT POSTAREA /* OS here when FEP comes up */
52 #define NCHAN 0x0C02L /* number of ports FEP sees */
53 #define PANIC 0x0C10L /* PANIC area for FEP */
54 #define KMEMEM 0x0C30L /* Memory for KME use */
55 #define CONFIG 0x0CD0L /* Concentrator configuration info */
56 #define CONFIGSIZE 0x0030 /* configuration info size */
57 #define DOWNREQ 0x0D00 /* Download request buffer pointer */
59 #define CHANBUF 0x1000L /* Async channel (bs_t) structs */
60 #define FEPOSSIZE 0x1FFF /* 8K FEPOS */
62 #define XEMPORTS 0xC02 /*
63 * Offset in board memory where FEP5 stores
64 * how many ports it has detected.
65 * NOTE: FEP5 reports 64 ports when the user
66 * has the cable in EBI OUT instead of EBI IN.
77 #define HIGHMEM 0x7f00
79 #define FEPTIMEOUT 200000
81 #define ENABLE_INTR 0x0e04 /* Enable interrupts flag */
82 #define FEPPOLL_MIN 1 /* minimum of 1 millisecond */
83 #define FEPPOLL_MAX 20 /* maximum of 20 milliseconds */
84 #define FEPPOLL 0x0c26 /* Fep event poll interval */
86 #define IALTPIN 0x0080 /* Input flag to swap DSR <-> DCD */
88 /************************************************************************
89 * Command structure definition.
90 ************************************************************************/
92 volatile unsigned short cm_head; /* Command buffer head offset */
93 volatile unsigned short cm_tail; /* Command buffer tail offset */
94 volatile unsigned short cm_start; /* start offset of buffer */
95 volatile unsigned short cm_max; /* last offset of buffer */
98 /************************************************************************
99 * Event structure definition.
100 ************************************************************************/
102 volatile unsigned short ev_head; /* Command buffer head offset */
103 volatile unsigned short ev_tail; /* Command buffer tail offset */
104 volatile unsigned short ev_start; /* start offset of buffer */
105 volatile unsigned short ev_max; /* last offset of buffer */
108 /************************************************************************
109 * Download buffer structure.
110 ************************************************************************/
112 uchar dl_type; /* Header */
113 uchar dl_seq; /* Download sequence */
114 ushort dl_srev; /* Software revision number */
115 ushort dl_lrev; /* Low revision number */
116 ushort dl_hrev; /* High revision number */
117 ushort dl_seg; /* Start segment address */
118 ushort dl_size; /* Number of bytes to download */
119 uchar dl_data[1024]; /* Download data */
122 /************************************************************************
123 * Per channel buffer structure
124 ************************************************************************
125 * Base Structure Entries Usage Meanings to Host *
127 * W = read write R = read only *
128 * C = changed by commands only *
129 * U = unknown (may be changed w/o notice) *
130 ************************************************************************/
132 volatile unsigned short tp_jmp; /* Transmit poll jump */
133 volatile unsigned short tc_jmp; /* Cooked procedure jump */
134 volatile unsigned short ri_jmp; /* Not currently used */
135 volatile unsigned short rp_jmp; /* Receive poll jump */
137 volatile unsigned short tx_seg; /* W Tx segment */
138 volatile unsigned short tx_head; /* W Tx buffer head offset */
139 volatile unsigned short tx_tail; /* R Tx buffer tail offset */
140 volatile unsigned short tx_max; /* W Tx buffer size - 1 */
142 volatile unsigned short rx_seg; /* W Rx segment */
143 volatile unsigned short rx_head; /* W Rx buffer head offset */
144 volatile unsigned short rx_tail; /* R Rx buffer tail offset */
145 volatile unsigned short rx_max; /* W Rx buffer size - 1 */
147 volatile unsigned short tx_lw; /* W Tx buffer low water mark */
148 volatile unsigned short rx_lw; /* W Rx buffer low water mark */
149 volatile unsigned short rx_hw; /* W Rx buffer high water mark */
150 volatile unsigned short incr; /* W Increment to next channel */
152 volatile unsigned short fepdev; /* U SCC device base address */
153 volatile unsigned short edelay; /* W Exception delay */
154 volatile unsigned short blen; /* W Break length */
155 volatile unsigned short btime; /* U Break complete time */
157 volatile unsigned short iflag; /* C UNIX input flags */
158 volatile unsigned short oflag; /* C UNIX output flags */
159 volatile unsigned short cflag; /* C UNIX control flags */
160 volatile unsigned short wfill[13]; /* U Reserved for expansion */
162 volatile unsigned char num; /* U Channel number */
163 volatile unsigned char ract; /* U Receiver active counter */
164 volatile unsigned char bstat; /* U Break status bits */
165 volatile unsigned char tbusy; /* W Transmit busy */
166 volatile unsigned char iempty; /* W Transmit empty event enable */
167 volatile unsigned char ilow; /* W Transmit low-water event enable */
168 volatile unsigned char idata; /* W Receive data interrupt enable */
169 volatile unsigned char eflag; /* U Host event flags */
171 volatile unsigned char tflag; /* U Transmit flags */
172 volatile unsigned char rflag; /* U Receive flags */
173 volatile unsigned char xmask; /* U Transmit ready flags */
174 volatile unsigned char xval; /* U Transmit ready value */
175 volatile unsigned char m_stat; /* RC Modem status bits */
176 volatile unsigned char m_change; /* U Modem bits which changed */
177 volatile unsigned char m_int; /* W Modem interrupt enable bits */
178 volatile unsigned char m_last; /* U Last modem status */
180 volatile unsigned char mtran; /* C Unreported modem trans */
181 volatile unsigned char orun; /* C Buffer overrun occurred */
182 volatile unsigned char astartc; /* W Auxiliary Xon char */
183 volatile unsigned char astopc; /* W Auxiliary Xoff char */
184 volatile unsigned char startc; /* W Xon character */
185 volatile unsigned char stopc; /* W Xoff character */
186 volatile unsigned char vnextc; /* W Vnext character */
187 volatile unsigned char hflow; /* C Software flow control */
189 volatile unsigned char fillc; /* U Delay Fill character */
190 volatile unsigned char ochar; /* U Saved output character */
191 volatile unsigned char omask; /* U Output character mask */
193 volatile unsigned char bfill[13]; /* U Reserved for expansion */
195 volatile unsigned char scc[16]; /* U SCC registers */
199 /************************************************************************
200 * FEP supported functions
201 ************************************************************************/
202 #define SRLOW 0xe0 /* Set receive low water */
203 #define SRHIGH 0xe1 /* Set receive high water */
204 #define FLUSHTX 0xe2 /* Flush transmit buffer */
205 #define PAUSETX 0xe3 /* Pause data transmission */
206 #define RESUMETX 0xe4 /* Resume data transmission */
207 #define SMINT 0xe5 /* Set Modem Interrupt */
208 #define SAFLOWC 0xe6 /* Set Aux. flow control chars */
209 #define SBREAK 0xe8 /* Send break */
210 #define SMODEM 0xe9 /* Set 8530 modem control lines */
211 #define SIFLAG 0xea /* Set UNIX iflags */
212 #define SFLOWC 0xeb /* Set flow control characters */
213 #define STLOW 0xec /* Set transmit low water mark */
214 #define RPAUSE 0xee /* Pause receive */
215 #define RRESUME 0xef /* Resume receive */
216 #define CHRESET 0xf0 /* Reset Channel */
217 #define BUFSETALL 0xf2 /* Set Tx & Rx buffer size avail*/
218 #define SOFLAG 0xf3 /* Set UNIX oflags */
219 #define SHFLOW 0xf4 /* Set hardware handshake */
220 #define SCFLAG 0xf5 /* Set UNIX cflags */
221 #define SVNEXT 0xf6 /* Set VNEXT character */
222 #define SPINTFC 0xfc /* Reserved */
223 #define SCOMMODE 0xfd /* Set RS232/422 mode */
226 /************************************************************************
228 ************************************************************************/
229 #define MODE_232 0x00
230 #define MODE_422 0x01
233 /************************************************************************
235 ************************************************************************/
236 #define IFBREAK 0x01 /* Break received */
237 #define IFTLW 0x02 /* Transmit low water */
238 #define IFTEM 0x04 /* Transmitter empty */
239 #define IFDATA 0x08 /* Receive data present */
240 #define IFMODEM 0x20 /* Modem status change */
242 /************************************************************************
244 ************************************************************************/
245 # define DM_RTS 0x02 /* Request to send */
246 # define DM_CD 0x80 /* Carrier detect */
247 # define DM_DSR 0x20 /* Data set ready */
248 # define DM_CTS 0x10 /* Clear to send */
249 # define DM_RI 0x40 /* Ring indicator */
250 # define DM_DTR 0x01 /* Data terminal ready */