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-rw-r--r--drivers/net/wan/sdla_ft1.c345
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diff --git a/drivers/net/wan/sdla_ft1.c b/drivers/net/wan/sdla_ft1.c
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index 9d6528a50f7b..000000000000
--- a/drivers/net/wan/sdla_ft1.c
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1/*****************************************************************************
2* sdla_chdlc.c WANPIPE(tm) Multiprotocol WAN Link Driver. Cisco HDLC module.
3*
4* Authors: Nenad Corbic <ncorbic@sangoma.com>
5* Gideon Hack
6*
7* Copyright: (c) 1995-1999 Sangoma Technologies Inc.
8*
9* This program is free software; you can redistribute it and/or
10* modify it under the terms of the GNU General Public License
11* as published by the Free Software Foundation; either version
12* 2 of the License, or (at your option) any later version.
13* ============================================================================
14* Sep 30, 1999 Nenad Corbic Fixed dynamic IP and route setup.
15* Sep 23, 1999 Nenad Corbic Added SMP support, fixed tracing
16* Sep 13, 1999 Nenad Corbic Split up Port 0 and 1 into separate devices.
17* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
18* Oct 30, 1998 Jaspreet Singh Added Support for CHDLC API (HDLC STREAMING).
19* Oct 28, 1998 Jaspreet Singh Added Support for Dual Port CHDLC.
20* Aug 07, 1998 David Fong Initial version.
21*****************************************************************************/
22
23#include <linux/module.h>
24#include <linux/kernel.h> /* printk(), and other useful stuff */
25#include <linux/stddef.h> /* offsetof(), etc. */
26#include <linux/errno.h> /* return codes */
27#include <linux/string.h> /* inline memset(), etc. */
28#include <linux/slab.h> /* kmalloc(), kfree() */
29#include <linux/wanrouter.h> /* WAN router definitions */
30#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
31#include <linux/if_arp.h> /* ARPHRD_* defines */
32#include <linux/jiffies.h> /* time_after() macro */
33
34#include <linux/inetdevice.h>
35#include <asm/uaccess.h>
36
37#include <linux/in.h> /* sockaddr_in */
38#include <linux/inet.h>
39#include <linux/if.h>
40#include <asm/byteorder.h> /* htons(), etc. */
41#include <linux/sdlapci.h>
42#include <asm/io.h>
43
44#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */
45
46/****** Defines & Macros ****************************************************/
47
48/* reasons for enabling the timer interrupt on the adapter */
49#define TMR_INT_ENABLED_UDP 0x0001
50#define TMR_INT_ENABLED_UPDATE 0x0002
51
52#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
53#define CHDLC_HDR_LEN 1
54
55#define IFF_POINTTOPOINT 0x10
56
57#define WANPIPE 0x00
58#define API 0x01
59#define CHDLC_API 0x01
60
61#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
62
63
64/******Data Structures*****************************************************/
65
66/* This structure is placed in the private data area of the device structure.
67 * The card structure used to occupy the private area but now the following
68 * structure will incorporate the card structure along with CHDLC specific data
69 */
70
71typedef struct chdlc_private_area
72{
73 struct net_device *slave;
74 sdla_t *card;
75 int TracingEnabled; /* For enabling Tracing */
76 unsigned long curr_trace_addr; /* Used for Tracing */
77 unsigned long start_trace_addr;
78 unsigned long end_trace_addr;
79 unsigned long base_addr_trace_buffer;
80 unsigned long end_addr_trace_buffer;
81 unsigned short number_trace_elements;
82 unsigned available_buffer_space;
83 unsigned long router_start_time;
84 unsigned char route_status;
85 unsigned char route_removed;
86 unsigned long tick_counter; /* For 5s timeout counter */
87 unsigned long router_up_time;
88 u32 IP_address; /* IP addressing */
89 u32 IP_netmask;
90 unsigned char mc; /* Mulitcast support on/off */
91 unsigned short udp_pkt_lgth; /* udp packet processing */
92 char udp_pkt_src;
93 char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
94 unsigned short timer_int_enabled;
95 char update_comms_stats; /* updating comms stats */
96 //FIXME: add driver stats as per frame relay!
97
98} chdlc_private_area_t;
99
100/* Route Status options */
101#define NO_ROUTE 0x00
102#define ADD_ROUTE 0x01
103#define ROUTE_ADDED 0x02
104#define REMOVE_ROUTE 0x03
105
106
107/****** Function Prototypes *************************************************/
108/* WAN link driver entry points. These are called by the WAN router module. */
109static int wpft1_exec (struct sdla *card, void *u_cmd, void *u_data);
110static int chdlc_read_version (sdla_t* card, char* str);
111static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
112
113/****** Public Functions ****************************************************/
114
115/*============================================================================
116 * Cisco HDLC protocol initialization routine.
117 *
118 * This routine is called by the main WANPIPE module during setup. At this
119 * point adapter is completely initialized and firmware is running.
120 * o read firmware version (to make sure it's alive)
121 * o configure adapter
122 * o initialize protocol-specific fields of the adapter data space.
123 *
124 * Return: 0 o.k.
125 * < 0 failure.
126 */
127int wpft1_init (sdla_t* card, wandev_conf_t* conf)
128{
129 unsigned char port_num;
130 int err;
131
132 union
133 {
134 char str[80];
135 } u;
136 volatile CHDLC_MAILBOX_STRUCT* mb;
137 CHDLC_MAILBOX_STRUCT* mb1;
138 unsigned long timeout;
139
140 /* Verify configuration ID */
141 if (conf->config_id != WANCONFIG_CHDLC) {
142 printk(KERN_INFO "%s: invalid configuration ID %u!\n",
143 card->devname, conf->config_id);
144 return -EINVAL;
145 }
146
147 /* Use primary port */
148 card->u.c.comm_port = 0;
149
150
151 /* Initialize protocol-specific fields */
152 if(card->hw.type != SDLA_S514){
153 card->mbox = (void *) card->hw.dpmbase;
154 }else{
155 card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
156 }
157
158 mb = mb1 = card->mbox;
159
160 if (!card->configured){
161
162 /* The board will place an 'I' in the return code to indicate that it is
163 ready to accept commands. We expect this to be completed in less
164 than 1 second. */
165
166 timeout = jiffies;
167 while (mb->return_code != 'I') /* Wait 1s for board to initialize */
168 if (time_after(jiffies, timeout + 1*HZ)) break;
169
170 if (mb->return_code != 'I') {
171 printk(KERN_INFO
172 "%s: Initialization not completed by adapter\n",
173 card->devname);
174 printk(KERN_INFO "Please contact Sangoma representative.\n");
175 return -EIO;
176 }
177 }
178
179 /* Read firmware version. Note that when adapter initializes, it
180 * clears the mailbox, so it may appear that the first command was
181 * executed successfully when in fact it was merely erased. To work
182 * around this, we execute the first command twice.
183 */
184
185 if (chdlc_read_version(card, u.str))
186 return -EIO;
187
188 printk(KERN_INFO "%s: Running FT1 Configuration firmware v%s\n",
189 card->devname, u.str);
190
191 card->isr = NULL;
192 card->poll = NULL;
193 card->exec = &wpft1_exec;
194 card->wandev.update = NULL;
195 card->wandev.new_if = NULL;
196 card->wandev.del_if = NULL;
197 card->wandev.state = WAN_DUALPORT;
198 card->wandev.udp_port = conf->udp_port;
199
200 card->wandev.new_if_cnt = 0;
201
202 /* This is for the ports link state */
203 card->u.c.state = WAN_DISCONNECTED;
204
205 /* reset the number of times the 'update()' proc has been called */
206 card->u.c.update_call_count = 0;
207
208 card->wandev.ttl = 0x7F;
209 card->wandev.interface = 0;
210
211 card->wandev.clocking = 0;
212
213 port_num = card->u.c.comm_port;
214
215 /* Setup Port Bps */
216
217 card->wandev.bps = 0;
218
219 card->wandev.mtu = MIN_LGTH_CHDLC_DATA_CFG;
220
221 /* Set up the interrupt status area */
222 /* Read the CHDLC Configuration and obtain:
223 * Ptr to shared memory infor struct
224 * Use this pointer to calculate the value of card->u.c.flags !
225 */
226 mb1->buffer_length = 0;
227 mb1->command = READ_CHDLC_CONFIGURATION;
228 err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
229 if(err != COMMAND_OK) {
230 chdlc_error(card, err, mb1);
231 return -EIO;
232 }
233
234 if(card->hw.type == SDLA_S514){
235 card->u.c.flags = (void *)(card->hw.dpmbase +
236 (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
237 ptr_shared_mem_info_struct));
238 }else{
239 card->u.c.flags = (void *)(card->hw.dpmbase +
240 (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
241 ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
242 }
243
244 card->wandev.state = WAN_FT1_READY;
245 printk(KERN_INFO "%s: FT1 Config Ready !\n",card->devname);
246
247 return 0;
248}
249
250static int wpft1_exec(sdla_t *card, void *u_cmd, void *u_data)
251{
252 CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
253 int len;
254
255 if (copy_from_user((void*)&mbox->command, u_cmd, sizeof(ft1_exec_cmd_t))){
256 return -EFAULT;
257 }
258
259 len = mbox->buffer_length;
260
261 if (len) {
262 if( copy_from_user((void*)&mbox->data, u_data, len)){
263 return -EFAULT;
264 }
265 }
266
267 /* execute command */
268 if (!sdla_exec(mbox)){
269 return -EIO;
270 }
271
272 /* return result */
273 if( copy_to_user(u_cmd, (void*)&mbox->command, sizeof(ft1_exec_cmd_t))){
274 return -EFAULT;
275 }
276
277 len = mbox->buffer_length;
278
279 if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len)){
280 return -EFAULT;
281 }
282
283 return 0;
284
285}
286
287/*============================================================================
288 * Read firmware code version.
289 * Put code version as ASCII string in str.
290 */
291static int chdlc_read_version (sdla_t* card, char* str)
292{
293 CHDLC_MAILBOX_STRUCT* mb = card->mbox;
294 int len;
295 char err;
296 mb->buffer_length = 0;
297 mb->command = READ_CHDLC_CODE_VERSION;
298 err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
299
300 if(err != COMMAND_OK) {
301 chdlc_error(card,err,mb);
302 }
303 else if (str) { /* is not null */
304 len = mb->buffer_length;
305 memcpy(str, mb->data, len);
306 str[len] = '\0';
307 }
308 return (err);
309}
310
311/*============================================================================
312 * Firmware error handler.
313 * This routine is called whenever firmware command returns non-zero
314 * return code.
315 *
316 * Return zero if previous command has to be cancelled.
317 */
318static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
319{
320 unsigned cmd = mb->command;
321
322 switch (err) {
323
324 case CMD_TIMEOUT:
325 printk(KERN_ERR "%s: command 0x%02X timed out!\n",
326 card->devname, cmd);
327 break;
328
329 case S514_BOTH_PORTS_SAME_CLK_MODE:
330 if(cmd == SET_CHDLC_CONFIGURATION) {
331 printk(KERN_INFO
332 "%s: Configure both ports for the same clock source\n",
333 card->devname);
334 break;
335 }
336
337 default:
338 printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
339 card->devname, cmd, err);
340 }
341
342 return 0;
343}
344
345MODULE_LICENSE("GPL");
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