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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/wan/sdla_ft1.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/net/wan/sdla_ft1.c')
-rw-r--r--drivers/net/wan/sdla_ft1.c344
1 files changed, 344 insertions, 0 deletions
diff --git a/drivers/net/wan/sdla_ft1.c b/drivers/net/wan/sdla_ft1.c
new file mode 100644
index 000000000000..5e3124856eb0
--- /dev/null
+++ b/drivers/net/wan/sdla_ft1.c
@@ -0,0 +1,344 @@
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
33#include <linux/inetdevice.h>
34#include <asm/uaccess.h>
35
36#include <linux/in.h> /* sockaddr_in */
37#include <linux/inet.h>
38#include <linux/if.h>
39#include <asm/byteorder.h> /* htons(), etc. */
40#include <linux/sdlapci.h>
41#include <asm/io.h>
42
43#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */
44
45/****** Defines & Macros ****************************************************/
46
47/* reasons for enabling the timer interrupt on the adapter */
48#define TMR_INT_ENABLED_UDP 0x0001
49#define TMR_INT_ENABLED_UPDATE 0x0002
50
51#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
52#define CHDLC_HDR_LEN 1
53
54#define IFF_POINTTOPOINT 0x10
55
56#define WANPIPE 0x00
57#define API 0x01
58#define CHDLC_API 0x01
59
60#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
61
62
63/******Data Structures*****************************************************/
64
65/* This structure is placed in the private data area of the device structure.
66 * The card structure used to occupy the private area but now the following
67 * structure will incorporate the card structure along with CHDLC specific data
68 */
69
70typedef struct chdlc_private_area
71{
72 struct net_device *slave;
73 sdla_t *card;
74 int TracingEnabled; /* For enabling Tracing */
75 unsigned long curr_trace_addr; /* Used for Tracing */
76 unsigned long start_trace_addr;
77 unsigned long end_trace_addr;
78 unsigned long base_addr_trace_buffer;
79 unsigned long end_addr_trace_buffer;
80 unsigned short number_trace_elements;
81 unsigned available_buffer_space;
82 unsigned long router_start_time;
83 unsigned char route_status;
84 unsigned char route_removed;
85 unsigned long tick_counter; /* For 5s timeout counter */
86 unsigned long router_up_time;
87 u32 IP_address; /* IP addressing */
88 u32 IP_netmask;
89 unsigned char mc; /* Mulitcast support on/off */
90 unsigned short udp_pkt_lgth; /* udp packet processing */
91 char udp_pkt_src;
92 char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
93 unsigned short timer_int_enabled;
94 char update_comms_stats; /* updating comms stats */
95 //FIXME: add driver stats as per frame relay!
96
97} chdlc_private_area_t;
98
99/* Route Status options */
100#define NO_ROUTE 0x00
101#define ADD_ROUTE 0x01
102#define ROUTE_ADDED 0x02
103#define REMOVE_ROUTE 0x03
104
105
106/****** Function Prototypes *************************************************/
107/* WAN link driver entry points. These are called by the WAN router module. */
108static int wpft1_exec (struct sdla *card, void *u_cmd, void *u_data);
109static int chdlc_read_version (sdla_t* card, char* str);
110static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
111
112/****** Public Functions ****************************************************/
113
114/*============================================================================
115 * Cisco HDLC protocol initialization routine.
116 *
117 * This routine is called by the main WANPIPE module during setup. At this
118 * point adapter is completely initialized and firmware is running.
119 * o read firmware version (to make sure it's alive)
120 * o configure adapter
121 * o initialize protocol-specific fields of the adapter data space.
122 *
123 * Return: 0 o.k.
124 * < 0 failure.
125 */
126int wpft1_init (sdla_t* card, wandev_conf_t* conf)
127{
128 unsigned char port_num;
129 int err;
130
131 union
132 {
133 char str[80];
134 } u;
135 volatile CHDLC_MAILBOX_STRUCT* mb;
136 CHDLC_MAILBOX_STRUCT* mb1;
137 unsigned long timeout;
138
139 /* Verify configuration ID */
140 if (conf->config_id != WANCONFIG_CHDLC) {
141 printk(KERN_INFO "%s: invalid configuration ID %u!\n",
142 card->devname, conf->config_id);
143 return -EINVAL;
144 }
145
146 /* Use primary port */
147 card->u.c.comm_port = 0;
148
149
150 /* Initialize protocol-specific fields */
151 if(card->hw.type != SDLA_S514){
152 card->mbox = (void *) card->hw.dpmbase;
153 }else{
154 card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
155 }
156
157 mb = mb1 = card->mbox;
158
159 if (!card->configured){
160
161 /* The board will place an 'I' in the return code to indicate that it is
162 ready to accept commands. We expect this to be completed in less
163 than 1 second. */
164
165 timeout = jiffies;
166 while (mb->return_code != 'I') /* Wait 1s for board to initialize */
167 if ((jiffies - timeout) > 1*HZ) break;
168
169 if (mb->return_code != 'I') {
170 printk(KERN_INFO
171 "%s: Initialization not completed by adapter\n",
172 card->devname);
173 printk(KERN_INFO "Please contact Sangoma representative.\n");
174 return -EIO;
175 }
176 }
177
178 /* Read firmware version. Note that when adapter initializes, it
179 * clears the mailbox, so it may appear that the first command was
180 * executed successfully when in fact it was merely erased. To work
181 * around this, we execute the first command twice.
182 */
183
184 if (chdlc_read_version(card, u.str))
185 return -EIO;
186
187 printk(KERN_INFO "%s: Running FT1 Configuration firmware v%s\n",
188 card->devname, u.str);
189
190 card->isr = NULL;
191 card->poll = NULL;
192 card->exec = &wpft1_exec;
193 card->wandev.update = NULL;
194 card->wandev.new_if = NULL;
195 card->wandev.del_if = NULL;
196 card->wandev.state = WAN_DUALPORT;
197 card->wandev.udp_port = conf->udp_port;
198
199 card->wandev.new_if_cnt = 0;
200
201 /* This is for the ports link state */
202 card->u.c.state = WAN_DISCONNECTED;
203
204 /* reset the number of times the 'update()' proc has been called */
205 card->u.c.update_call_count = 0;
206
207 card->wandev.ttl = 0x7F;
208 card->wandev.interface = 0;
209
210 card->wandev.clocking = 0;
211
212 port_num = card->u.c.comm_port;
213
214 /* Setup Port Bps */
215
216 card->wandev.bps = 0;
217
218 card->wandev.mtu = MIN_LGTH_CHDLC_DATA_CFG;
219
220 /* Set up the interrupt status area */
221 /* Read the CHDLC Configuration and obtain:
222 * Ptr to shared memory infor struct
223 * Use this pointer to calculate the value of card->u.c.flags !
224 */
225 mb1->buffer_length = 0;
226 mb1->command = READ_CHDLC_CONFIGURATION;
227 err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
228 if(err != COMMAND_OK) {
229 chdlc_error(card, err, mb1);
230 return -EIO;
231 }
232
233 if(card->hw.type == SDLA_S514){
234 card->u.c.flags = (void *)(card->hw.dpmbase +
235 (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
236 ptr_shared_mem_info_struct));
237 }else{
238 card->u.c.flags = (void *)(card->hw.dpmbase +
239 (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
240 ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
241 }
242
243 card->wandev.state = WAN_FT1_READY;
244 printk(KERN_INFO "%s: FT1 Config Ready !\n",card->devname);
245
246 return 0;
247}
248
249static int wpft1_exec(sdla_t *card, void *u_cmd, void *u_data)
250{
251 CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
252 int len;
253
254 if (copy_from_user((void*)&mbox->command, u_cmd, sizeof(ft1_exec_cmd_t))){
255 return -EFAULT;
256 }
257
258 len = mbox->buffer_length;
259
260 if (len) {
261 if( copy_from_user((void*)&mbox->data, u_data, len)){
262 return -EFAULT;
263 }
264 }
265
266 /* execute command */
267 if (!sdla_exec(mbox)){
268 return -EIO;
269 }
270
271 /* return result */
272 if( copy_to_user(u_cmd, (void*)&mbox->command, sizeof(ft1_exec_cmd_t))){
273 return -EFAULT;
274 }
275
276 len = mbox->buffer_length;
277
278 if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len)){
279 return -EFAULT;
280 }
281
282 return 0;
283
284}
285
286/*============================================================================
287 * Read firmware code version.
288 * Put code version as ASCII string in str.
289 */
290static int chdlc_read_version (sdla_t* card, char* str)
291{
292 CHDLC_MAILBOX_STRUCT* mb = card->mbox;
293 int len;
294 char err;
295 mb->buffer_length = 0;
296 mb->command = READ_CHDLC_CODE_VERSION;
297 err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
298
299 if(err != COMMAND_OK) {
300 chdlc_error(card,err,mb);
301 }
302 else if (str) { /* is not null */
303 len = mb->buffer_length;
304 memcpy(str, mb->data, len);
305 str[len] = '\0';
306 }
307 return (err);
308}
309
310/*============================================================================
311 * Firmware error handler.
312 * This routine is called whenever firmware command returns non-zero
313 * return code.
314 *
315 * Return zero if previous command has to be cancelled.
316 */
317static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
318{
319 unsigned cmd = mb->command;
320
321 switch (err) {
322
323 case CMD_TIMEOUT:
324 printk(KERN_ERR "%s: command 0x%02X timed out!\n",
325 card->devname, cmd);
326 break;
327
328 case S514_BOTH_PORTS_SAME_CLK_MODE:
329 if(cmd == SET_CHDLC_CONFIGURATION) {
330 printk(KERN_INFO
331 "%s: Configure both ports for the same clock source\n",
332 card->devname);
333 break;
334 }
335
336 default:
337 printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
338 card->devname, cmd, err);
339 }
340
341 return 0;
342}
343
344MODULE_LICENSE("GPL");