Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | |
| 2 | /* sx.c -- driver for the Specialix SX series cards. |
| 3 | * |
| 4 | * This driver will also support the older SI, and XIO cards. |
| 5 | * |
| 6 | * |
| 7 | * (C) 1998 - 2004 R.E.Wolff@BitWizard.nl |
| 8 | * |
| 9 | * Simon Allen (simonallen@cix.compulink.co.uk) wrote a previous |
| 10 | * version of this driver. Some fragments may have been copied. (none |
| 11 | * yet :-) |
| 12 | * |
| 13 | * Specialix pays for the development and support of this driver. |
| 14 | * Please DO contact support@specialix.co.uk if you require |
| 15 | * support. But please read the documentation (sx.txt) first. |
| 16 | * |
| 17 | * |
| 18 | * |
| 19 | * This program is free software; you can redistribute it and/or |
| 20 | * modify it under the terms of the GNU General Public License as |
| 21 | * published by the Free Software Foundation; either version 2 of |
| 22 | * the License, or (at your option) any later version. |
| 23 | * |
| 24 | * This program is distributed in the hope that it will be |
| 25 | * useful, but WITHOUT ANY WARRANTY; without even the implied |
| 26 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
| 27 | * PURPOSE. See the GNU General Public License for more details. |
| 28 | * |
| 29 | * You should have received a copy of the GNU General Public |
| 30 | * License along with this program; if not, write to the Free |
| 31 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, |
| 32 | * USA. |
| 33 | * |
| 34 | * Revision history: |
| 35 | * $Log: sx.c,v $ |
| 36 | * Revision 1.33 2000/03/09 10:00:00 pvdl,wolff |
| 37 | * - Fixed module and port counting |
| 38 | * - Fixed signal handling |
| 39 | * - Fixed an Ooops |
| 40 | * |
| 41 | * Revision 1.32 2000/03/07 09:00:00 wolff,pvdl |
| 42 | * - Fixed some sx_dprintk typos |
| 43 | * - added detection for an invalid board/module configuration |
| 44 | * |
| 45 | * Revision 1.31 2000/03/06 12:00:00 wolff,pvdl |
| 46 | * - Added support for EISA |
| 47 | * |
| 48 | * Revision 1.30 2000/01/21 17:43:06 wolff |
| 49 | * - Added support for SX+ |
| 50 | * |
| 51 | * Revision 1.26 1999/08/05 15:22:14 wolff |
| 52 | * - Port to 2.3.x |
| 53 | * - Reformatted to Linus' liking. |
| 54 | * |
| 55 | * Revision 1.25 1999/07/30 14:24:08 wolff |
| 56 | * Had accidentally left "gs_debug" set to "-1" instead of "off" (=0). |
| 57 | * |
| 58 | * Revision 1.24 1999/07/28 09:41:52 wolff |
| 59 | * - I noticed the remark about use-count straying in sx.txt. I checked |
| 60 | * sx_open, and found a few places where that could happen. I hope it's |
| 61 | * fixed now. |
| 62 | * |
| 63 | * Revision 1.23 1999/07/28 08:56:06 wolff |
| 64 | * - Fixed crash when sx_firmware run twice. |
| 65 | * - Added sx_slowpoll as a module parameter (I guess nobody really wanted |
| 66 | * to change it from the default... ) |
| 67 | * - Fixed a stupid editing problem I introduced in 1.22. |
| 68 | * - Fixed dropping characters on a termios change. |
| 69 | * |
| 70 | * Revision 1.22 1999/07/26 21:01:43 wolff |
| 71 | * Russell Brown noticed that I had overlooked 4 out of six modem control |
| 72 | * signals in sx_getsignals. Ooops. |
| 73 | * |
| 74 | * Revision 1.21 1999/07/23 09:11:33 wolff |
| 75 | * I forgot to free dynamically allocated memory when the driver is unloaded. |
| 76 | * |
| 77 | * Revision 1.20 1999/07/20 06:25:26 wolff |
| 78 | * The "closing wait" wasn't honoured. Thanks to James Griffiths for |
| 79 | * reporting this. |
| 80 | * |
| 81 | * Revision 1.19 1999/07/11 08:59:59 wolff |
| 82 | * Fixed an oops in close, when an open was pending. Changed the memtest |
| 83 | * a bit. Should also test the board in word-mode, however my card fails the |
| 84 | * memtest then. I still have to figure out what is wrong... |
| 85 | * |
| 86 | * Revision 1.18 1999/06/10 09:38:42 wolff |
| 87 | * Changed the format of the firmware revision from %04x to %x.%02x . |
| 88 | * |
| 89 | * Revision 1.17 1999/06/04 09:44:35 wolff |
| 90 | * fixed problem: reference to pci stuff when config_pci was off... |
| 91 | * Thanks to Jorge Novo for noticing this. |
| 92 | * |
| 93 | * Revision 1.16 1999/06/02 08:30:15 wolff |
| 94 | * added/removed the workaround for the DCD bug in the Firmware. |
| 95 | * A bit more debugging code to locate that... |
| 96 | * |
| 97 | * Revision 1.15 1999/06/01 11:35:30 wolff |
| 98 | * when DCD is left low (floating?), on TA's the firmware first tells us |
| 99 | * that DCD is high, but after a short while suddenly comes to the |
| 100 | * conclusion that it is low. All this would be fine, if it weren't that |
| 101 | * Unix requires us to send a "hangup" signal in that case. This usually |
| 102 | * all happens BEFORE the program has had a chance to ioctl the device |
| 103 | * into clocal mode.. |
| 104 | * |
| 105 | * Revision 1.14 1999/05/25 11:18:59 wolff |
| 106 | * Added PCI-fix. |
| 107 | * Added checks for return code of sx_sendcommand. |
| 108 | * Don't issue "reconfig" if port isn't open yet. (bit us on TA modules...) |
| 109 | * |
| 110 | * Revision 1.13 1999/04/29 15:18:01 wolff |
| 111 | * Fixed an "oops" that showed on SuSE 6.0 systems. |
| 112 | * Activate DTR again after stty 0. |
| 113 | * |
| 114 | * Revision 1.12 1999/04/29 07:49:52 wolff |
| 115 | * Improved "stty 0" handling a bit. (used to change baud to 9600 assuming |
| 116 | * the connection would be dropped anyway. That is not always the case, |
| 117 | * and confuses people). |
| 118 | * Told the card to always monitor the modem signals. |
| 119 | * Added support for dynamic gs_debug adjustments. |
| 120 | * Now tells the rest of the system the number of ports. |
| 121 | * |
| 122 | * Revision 1.11 1999/04/24 11:11:30 wolff |
| 123 | * Fixed two stupid typos in the memory test. |
| 124 | * |
| 125 | * Revision 1.10 1999/04/24 10:53:39 wolff |
| 126 | * Added some of Christian's suggestions. |
| 127 | * Fixed an HW_COOK_IN bug (ISIG was not in I_OTHER. We used to trust the |
| 128 | * card to send the signal to the process.....) |
| 129 | * |
| 130 | * Revision 1.9 1999/04/23 07:26:38 wolff |
| 131 | * Included Christian Lademann's 2.0 compile-warning fixes and interrupt |
| 132 | * assignment redesign. |
| 133 | * Cleanup of some other stuff. |
| 134 | * |
| 135 | * Revision 1.8 1999/04/16 13:05:30 wolff |
| 136 | * fixed a DCD change unnoticed bug. |
| 137 | * |
| 138 | * Revision 1.7 1999/04/14 22:19:51 wolff |
| 139 | * Fixed typo that showed up in 2.0.x builds (get_user instead of Get_user!) |
| 140 | * |
| 141 | * Revision 1.6 1999/04/13 18:40:20 wolff |
| 142 | * changed misc-minor to 161, as assigned by HPA. |
| 143 | * |
| 144 | * Revision 1.5 1999/04/13 15:12:25 wolff |
| 145 | * Fixed use-count leak when "hangup" occurred. |
| 146 | * Added workaround for a stupid-PCIBIOS bug. |
| 147 | * |
| 148 | * |
| 149 | * Revision 1.4 1999/04/01 22:47:40 wolff |
| 150 | * Fixed < 1M linux-2.0 problem. |
| 151 | * (vremap isn't compatible with ioremap in that case) |
| 152 | * |
| 153 | * Revision 1.3 1999/03/31 13:45:45 wolff |
| 154 | * Firmware loading is now done through a separate IOCTL. |
| 155 | * |
| 156 | * Revision 1.2 1999/03/28 12:22:29 wolff |
| 157 | * rcs cleanup |
| 158 | * |
| 159 | * Revision 1.1 1999/03/28 12:10:34 wolff |
| 160 | * Readying for release on 2.0.x (sorry David, 1.01 becomes 1.1 for RCS). |
| 161 | * |
| 162 | * Revision 0.12 1999/03/28 09:20:10 wolff |
| 163 | * Fixed problem in 0.11, continueing cleanup. |
| 164 | * |
| 165 | * Revision 0.11 1999/03/28 08:46:44 wolff |
| 166 | * cleanup. Not good. |
| 167 | * |
| 168 | * Revision 0.10 1999/03/28 08:09:43 wolff |
| 169 | * Fixed loosing characters on close. |
| 170 | * |
| 171 | * Revision 0.9 1999/03/21 22:52:01 wolff |
| 172 | * Ported back to 2.2.... (minor things) |
| 173 | * |
| 174 | * Revision 0.8 1999/03/21 22:40:33 wolff |
| 175 | * Port to 2.0 |
| 176 | * |
| 177 | * Revision 0.7 1999/03/21 19:06:34 wolff |
| 178 | * Fixed hangup processing. |
| 179 | * |
| 180 | * Revision 0.6 1999/02/05 08:45:14 wolff |
| 181 | * fixed real_raw problems. Inclusion into kernel imminent. |
| 182 | * |
| 183 | * Revision 0.5 1998/12/21 23:51:06 wolff |
| 184 | * Snatched a nasty bug: sx_transmit_chars was getting re-entered, and it |
| 185 | * shouldn't have. THATs why I want to have transmit interrupts even when |
| 186 | * the buffer is empty. |
| 187 | * |
| 188 | * Revision 0.4 1998/12/17 09:34:46 wolff |
| 189 | * PPP works. ioctl works. Basically works! |
| 190 | * |
| 191 | * Revision 0.3 1998/12/15 13:05:18 wolff |
| 192 | * It works! Wow! Gotta start implementing IOCTL and stuff.... |
| 193 | * |
| 194 | * Revision 0.2 1998/12/01 08:33:53 wolff |
| 195 | * moved over to 2.1.130 |
| 196 | * |
| 197 | * Revision 0.1 1998/11/03 21:23:51 wolff |
| 198 | * Initial revision. Detects SX card. |
| 199 | * |
| 200 | * */ |
| 201 | |
| 202 | |
| 203 | #define RCS_ID "$Id: sx.c,v 1.33 2000/03/08 10:01:02 wolff, pvdl Exp $" |
| 204 | #define RCS_REV "$Revision: 1.33 $" |
| 205 | |
| 206 | |
| 207 | #include <linux/module.h> |
| 208 | #include <linux/config.h> |
| 209 | #include <linux/kdev_t.h> |
| 210 | #include <linux/kernel.h> |
| 211 | #include <linux/sched.h> |
| 212 | #include <linux/ioport.h> |
| 213 | #include <linux/interrupt.h> |
| 214 | #include <linux/errno.h> |
| 215 | #include <linux/tty.h> |
| 216 | #include <linux/tty_flip.h> |
| 217 | #include <linux/mm.h> |
| 218 | #include <linux/serial.h> |
| 219 | #include <linux/fcntl.h> |
| 220 | #include <linux/major.h> |
| 221 | #include <linux/delay.h> |
| 222 | #include <linux/pci.h> |
| 223 | #include <linux/slab.h> |
| 224 | #include <linux/init.h> |
| 225 | #include <linux/miscdevice.h> |
| 226 | #include <linux/bitops.h> |
| 227 | |
| 228 | #include <asm/io.h> |
| 229 | #include <asm/uaccess.h> |
| 230 | |
| 231 | /* The 3.0.0 version of sxboards/sxwindow.h uses BYTE and WORD.... */ |
| 232 | #define BYTE u8 |
| 233 | #define WORD u16 |
| 234 | |
| 235 | /* .... but the 3.0.4 version uses _u8 and _u16. */ |
| 236 | #define _u8 u8 |
| 237 | #define _u16 u16 |
| 238 | |
| 239 | #include "sxboards.h" |
| 240 | #include "sxwindow.h" |
| 241 | |
| 242 | #include <linux/generic_serial.h> |
| 243 | #include "sx.h" |
| 244 | |
| 245 | |
| 246 | /* I don't think that this driver can handle more than 256 ports on |
| 247 | one machine. You'll have to increase the number of boards in sx.h |
| 248 | if you want more than 4 boards. */ |
| 249 | |
| 250 | #ifndef PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 |
| 251 | #define PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8 0x2000 |
| 252 | #endif |
| 253 | |
| 254 | #ifdef CONFIG_PCI |
| 255 | static struct pci_device_id sx_pci_tbl[] = { |
| 256 | { PCI_VENDOR_ID_SPECIALIX, PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, PCI_ANY_ID, PCI_ANY_ID }, |
| 257 | { 0 } |
| 258 | }; |
| 259 | MODULE_DEVICE_TABLE(pci, sx_pci_tbl); |
| 260 | #endif /* CONFIG_PCI */ |
| 261 | |
| 262 | /* Configurable options: |
| 263 | (Don't be too sure that it'll work if you toggle them) */ |
| 264 | |
| 265 | /* Am I paranoid or not ? ;-) */ |
| 266 | #undef SX_PARANOIA_CHECK |
| 267 | |
| 268 | |
| 269 | /* 20 -> 2000 per second. The card should rate-limit interrupts at 100 |
| 270 | Hz, but it is user configurable. I don't recommend going above 1000 |
| 271 | Hz. The interrupt ratelimit might trigger if the interrupt is |
| 272 | shared with a very active other device. */ |
| 273 | #define IRQ_RATE_LIMIT 20 |
| 274 | |
| 275 | /* Sharing interrupts is possible now. If the other device wants more |
| 276 | than 2000 interrupts per second, we'd gracefully decline further |
| 277 | interrupts. That's not what we want. On the other hand, if the |
| 278 | other device interrupts 2000 times a second, don't use the SX |
| 279 | interrupt. Use polling. */ |
| 280 | #undef IRQ_RATE_LIMIT |
| 281 | |
| 282 | |
| 283 | #if 0 |
| 284 | /* Not implemented */ |
| 285 | /* |
| 286 | * The following defines are mostly for testing purposes. But if you need |
| 287 | * some nice reporting in your syslog, you can define them also. |
| 288 | */ |
| 289 | #define SX_REPORT_FIFO |
| 290 | #define SX_REPORT_OVERRUN |
| 291 | #endif |
| 292 | |
| 293 | |
| 294 | /* Function prototypes */ |
| 295 | static void sx_disable_tx_interrupts (void * ptr); |
| 296 | static void sx_enable_tx_interrupts (void * ptr); |
| 297 | static void sx_disable_rx_interrupts (void * ptr); |
| 298 | static void sx_enable_rx_interrupts (void * ptr); |
| 299 | static int sx_get_CD (void * ptr); |
| 300 | static void sx_shutdown_port (void * ptr); |
| 301 | static int sx_set_real_termios (void *ptr); |
| 302 | static void sx_close (void *ptr); |
| 303 | static int sx_chars_in_buffer (void * ptr); |
| 304 | static int sx_init_board (struct sx_board *board); |
| 305 | static int sx_init_portstructs (int nboards, int nports); |
| 306 | static int sx_fw_ioctl (struct inode *inode, struct file *filp, |
| 307 | unsigned int cmd, unsigned long arg); |
| 308 | static int sx_init_drivers(void); |
| 309 | |
| 310 | |
| 311 | static struct tty_driver *sx_driver; |
| 312 | |
| 313 | static struct sx_board boards[SX_NBOARDS]; |
| 314 | static struct sx_port *sx_ports; |
| 315 | static int sx_initialized; |
| 316 | static int sx_nports; |
| 317 | static int sx_debug; |
| 318 | |
| 319 | |
| 320 | /* You can have the driver poll your card. |
| 321 | - Set sx_poll to 1 to poll every timer tick (10ms on Intel). |
| 322 | This is used when the card cannot use an interrupt for some reason. |
| 323 | |
| 324 | - set sx_slowpoll to 100 to do an extra poll once a second (on Intel). If |
| 325 | the driver misses an interrupt (report this if it DOES happen to you!) |
| 326 | everything will continue to work.... |
| 327 | */ |
| 328 | static int sx_poll = 1; |
| 329 | static int sx_slowpoll; |
| 330 | |
| 331 | /* The card limits the number of interrupts per second. |
| 332 | At 115k2 "100" should be sufficient. |
| 333 | If you're using higher baudrates, you can increase this... |
| 334 | */ |
| 335 | |
| 336 | static int sx_maxints = 100; |
| 337 | |
| 338 | /* These are the only open spaces in my computer. Yours may have more |
| 339 | or less.... -- REW |
| 340 | duh: Card at 0xa0000 is possible on HP Netserver?? -- pvdl |
| 341 | */ |
| 342 | static int sx_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000, |
| 343 | 0xc8000, 0xd8000, 0xe8000}; |
| 344 | static int si_probe_addrs[]= {0xc0000, 0xd0000, 0xe0000, |
| 345 | 0xc8000, 0xd8000, 0xe8000, 0xa0000}; |
| 346 | static int si1_probe_addrs[]= { 0xd0000}; |
| 347 | |
Tobias Klauser | fe97107 | 2006-01-09 20:54:02 -0800 | [diff] [blame] | 348 | #define NR_SX_ADDRS ARRAY_SIZE(sx_probe_addrs) |
| 349 | #define NR_SI_ADDRS ARRAY_SIZE(si_probe_addrs) |
| 350 | #define NR_SI1_ADDRS ARRAY_SIZE(si1_probe_addrs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
| 352 | |
| 353 | /* Set the mask to all-ones. This alas, only supports 32 interrupts. |
| 354 | Some architectures may need more. */ |
| 355 | static int sx_irqmask = -1; |
| 356 | |
| 357 | module_param_array(sx_probe_addrs, int, NULL, 0); |
| 358 | module_param_array(si_probe_addrs, int, NULL, 0); |
| 359 | module_param(sx_poll, int, 0); |
| 360 | module_param(sx_slowpoll, int, 0); |
| 361 | module_param(sx_maxints, int, 0); |
| 362 | module_param(sx_debug, int, 0); |
| 363 | module_param(sx_irqmask, int, 0); |
| 364 | |
| 365 | MODULE_LICENSE("GPL"); |
| 366 | |
| 367 | static struct real_driver sx_real_driver = { |
| 368 | sx_disable_tx_interrupts, |
| 369 | sx_enable_tx_interrupts, |
| 370 | sx_disable_rx_interrupts, |
| 371 | sx_enable_rx_interrupts, |
| 372 | sx_get_CD, |
| 373 | sx_shutdown_port, |
| 374 | sx_set_real_termios, |
| 375 | sx_chars_in_buffer, |
| 376 | sx_close, |
| 377 | }; |
| 378 | |
| 379 | |
| 380 | /* |
| 381 | This driver can spew a whole lot of debugging output at you. If you |
| 382 | need maximum performance, you should disable the DEBUG define. To |
| 383 | aid in debugging in the field, I'm leaving the compile-time debug |
| 384 | features enabled, and disable them "runtime". That allows me to |
| 385 | instruct people with problems to enable debugging without requiring |
| 386 | them to recompile... |
| 387 | */ |
| 388 | #define DEBUG |
| 389 | |
| 390 | |
| 391 | #ifdef DEBUG |
| 392 | #define sx_dprintk(f, str...) if (sx_debug & f) printk (str) |
| 393 | #else |
| 394 | #define sx_dprintk(f, str...) /* nothing */ |
| 395 | #endif |
| 396 | |
| 397 | |
| 398 | |
| 399 | #define func_enter() sx_dprintk (SX_DEBUG_FLOW, "sx: enter %s\n",__FUNCTION__) |
| 400 | #define func_exit() sx_dprintk (SX_DEBUG_FLOW, "sx: exit %s\n", __FUNCTION__) |
| 401 | |
| 402 | #define func_enter2() sx_dprintk (SX_DEBUG_FLOW, "sx: enter %s (port %d)\n", \ |
| 403 | __FUNCTION__, port->line) |
| 404 | |
| 405 | |
| 406 | |
| 407 | |
| 408 | /* |
| 409 | * Firmware loader driver specific routines |
| 410 | * |
| 411 | */ |
| 412 | |
| 413 | static struct file_operations sx_fw_fops = { |
| 414 | .owner = THIS_MODULE, |
| 415 | .ioctl = sx_fw_ioctl, |
| 416 | }; |
| 417 | |
| 418 | static struct miscdevice sx_fw_device = { |
| 419 | SXCTL_MISC_MINOR, "sxctl", &sx_fw_fops |
| 420 | }; |
| 421 | |
| 422 | |
| 423 | |
| 424 | |
| 425 | |
| 426 | #ifdef SX_PARANOIA_CHECK |
| 427 | |
| 428 | /* This doesn't work. Who's paranoid around here? Not me! */ |
| 429 | |
| 430 | static inline int sx_paranoia_check(struct sx_port const * port, |
| 431 | char *name, const char *routine) |
| 432 | { |
| 433 | |
| 434 | static const char *badmagic = |
| 435 | KERN_ERR "sx: Warning: bad sx port magic number for device %s in %s\n"; |
| 436 | static const char *badinfo = |
| 437 | KERN_ERR "sx: Warning: null sx port for device %s in %s\n"; |
| 438 | |
| 439 | if (!port) { |
| 440 | printk(badinfo, name, routine); |
| 441 | return 1; |
| 442 | } |
| 443 | if (port->magic != SX_MAGIC) { |
| 444 | printk(badmagic, name, routine); |
| 445 | return 1; |
| 446 | } |
| 447 | |
| 448 | return 0; |
| 449 | } |
| 450 | #else |
| 451 | #define sx_paranoia_check(a,b,c) 0 |
| 452 | #endif |
| 453 | |
| 454 | /* The timeouts. First try 30 times as fast as possible. Then give |
| 455 | the card some time to breathe between accesses. (Otherwise the |
| 456 | processor on the card might not be able to access its OWN bus... */ |
| 457 | |
| 458 | #define TIMEOUT_1 30 |
| 459 | #define TIMEOUT_2 1000000 |
| 460 | |
| 461 | |
| 462 | #ifdef DEBUG |
| 463 | static void my_hd_io(void __iomem *p, int len) |
| 464 | { |
| 465 | int i, j, ch; |
| 466 | unsigned char __iomem *addr = p; |
| 467 | |
| 468 | for (i=0;i<len;i+=16) { |
| 469 | printk ("%p ", addr+i); |
| 470 | for (j=0;j<16;j++) { |
| 471 | printk ("%02x %s", readb(addr+j+i), (j==7)?" ":""); |
| 472 | } |
| 473 | for (j=0;j<16;j++) { |
| 474 | ch = readb(addr+j+i); |
| 475 | printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch)); |
| 476 | } |
| 477 | printk ("\n"); |
| 478 | } |
| 479 | } |
| 480 | static void my_hd(void *p, int len) |
| 481 | { |
| 482 | int i, j, ch; |
| 483 | unsigned char *addr = p; |
| 484 | |
| 485 | for (i=0;i<len;i+=16) { |
| 486 | printk ("%p ", addr+i); |
| 487 | for (j=0;j<16;j++) { |
| 488 | printk ("%02x %s", addr[j+i], (j==7)?" ":""); |
| 489 | } |
| 490 | for (j=0;j<16;j++) { |
| 491 | ch = addr[j+i]; |
| 492 | printk ("%c", (ch < 0x20)?'.':((ch > 0x7f)?'.':ch)); |
| 493 | } |
| 494 | printk ("\n"); |
| 495 | } |
| 496 | } |
| 497 | #endif |
| 498 | |
| 499 | |
| 500 | |
| 501 | /* This needs redoing for Alpha -- REW -- Done. */ |
| 502 | |
| 503 | static inline void write_sx_byte (struct sx_board *board, int offset, u8 byte) |
| 504 | { |
| 505 | writeb (byte, board->base+offset); |
| 506 | } |
| 507 | |
| 508 | static inline u8 read_sx_byte (struct sx_board *board, int offset) |
| 509 | { |
| 510 | return readb (board->base+offset); |
| 511 | } |
| 512 | |
| 513 | |
| 514 | static inline void write_sx_word (struct sx_board *board, int offset, u16 word) |
| 515 | { |
| 516 | writew (word, board->base+offset); |
| 517 | } |
| 518 | |
| 519 | static inline u16 read_sx_word (struct sx_board *board, int offset) |
| 520 | { |
| 521 | return readw (board->base + offset); |
| 522 | } |
| 523 | |
| 524 | |
| 525 | static int sx_busy_wait_eq (struct sx_board *board, |
| 526 | int offset, int mask, int correctval) |
| 527 | { |
| 528 | int i; |
| 529 | |
| 530 | func_enter (); |
| 531 | |
| 532 | for (i=0; i < TIMEOUT_1 ;i++) |
| 533 | if ((read_sx_byte (board, offset) & mask) == correctval) { |
| 534 | func_exit (); |
| 535 | return 1; |
| 536 | } |
| 537 | |
| 538 | for (i=0; i < TIMEOUT_2 ;i++) { |
| 539 | if ((read_sx_byte (board, offset) & mask) == correctval) { |
| 540 | func_exit (); |
| 541 | return 1; |
| 542 | } |
| 543 | udelay (1); |
| 544 | } |
| 545 | |
| 546 | func_exit (); |
| 547 | return 0; |
| 548 | } |
| 549 | |
| 550 | |
| 551 | static int sx_busy_wait_neq (struct sx_board *board, |
| 552 | int offset, int mask, int badval) |
| 553 | { |
| 554 | int i; |
| 555 | |
| 556 | func_enter (); |
| 557 | |
| 558 | for (i=0; i < TIMEOUT_1 ;i++) |
| 559 | if ((read_sx_byte (board, offset) & mask) != badval) { |
| 560 | func_exit (); |
| 561 | return 1; |
| 562 | } |
| 563 | |
| 564 | for (i=0; i < TIMEOUT_2 ;i++) { |
| 565 | if ((read_sx_byte (board, offset) & mask) != badval) { |
| 566 | func_exit (); |
| 567 | return 1; |
| 568 | } |
| 569 | udelay (1); |
| 570 | } |
| 571 | |
| 572 | func_exit (); |
| 573 | return 0; |
| 574 | } |
| 575 | |
| 576 | |
| 577 | |
| 578 | /* 5.6.4 of 6210028 r2.3 */ |
| 579 | static int sx_reset (struct sx_board *board) |
| 580 | { |
| 581 | func_enter (); |
| 582 | |
| 583 | if (IS_SX_BOARD (board)) { |
| 584 | |
| 585 | write_sx_byte (board, SX_CONFIG, 0); |
| 586 | write_sx_byte (board, SX_RESET, 1); /* Value doesn't matter */ |
| 587 | |
| 588 | if (!sx_busy_wait_eq (board, SX_RESET_STATUS, 1, 0)) { |
| 589 | printk (KERN_INFO "sx: Card doesn't respond to reset....\n"); |
| 590 | return 0; |
| 591 | } |
| 592 | } else if (IS_EISA_BOARD(board)) { |
| 593 | outb(board->irq<<4, board->eisa_base+0xc02); |
| 594 | } else if (IS_SI1_BOARD(board)) { |
| 595 | write_sx_byte (board, SI1_ISA_RESET, 0); // value does not matter |
| 596 | } else { |
| 597 | /* Gory details of the SI/ISA board */ |
| 598 | write_sx_byte (board, SI2_ISA_RESET, SI2_ISA_RESET_SET); |
| 599 | write_sx_byte (board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_CLEAR); |
| 600 | write_sx_byte (board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_CLEAR); |
| 601 | write_sx_byte (board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_CLEAR); |
| 602 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); |
| 603 | write_sx_byte (board, SI2_ISA_IRQSET, SI2_ISA_IRQSET_CLEAR); |
| 604 | } |
| 605 | |
| 606 | func_exit (); |
| 607 | return 1; |
| 608 | } |
| 609 | |
| 610 | |
| 611 | /* This doesn't work on machines where "NULL" isn't 0 */ |
| 612 | /* If you have one of those, someone will need to write |
| 613 | the equivalent of this, which will amount to about 3 lines. I don't |
| 614 | want to complicate this right now. -- REW |
| 615 | (See, I do write comments every now and then :-) */ |
| 616 | #define OFFSETOF(strct, elem) ((long)&(((struct strct *)NULL)->elem)) |
| 617 | |
| 618 | |
| 619 | #define CHAN_OFFSET(port,elem) (port->ch_base + OFFSETOF (_SXCHANNEL, elem)) |
| 620 | #define MODU_OFFSET(board,addr,elem) (addr + OFFSETOF (_SXMODULE, elem)) |
| 621 | #define BRD_OFFSET(board,elem) (OFFSETOF (_SXCARD, elem)) |
| 622 | |
| 623 | |
| 624 | #define sx_write_channel_byte(port, elem, val) \ |
| 625 | write_sx_byte (port->board, CHAN_OFFSET (port, elem), val) |
| 626 | |
| 627 | #define sx_read_channel_byte(port, elem) \ |
| 628 | read_sx_byte (port->board, CHAN_OFFSET (port, elem)) |
| 629 | |
| 630 | #define sx_write_channel_word(port, elem, val) \ |
| 631 | write_sx_word (port->board, CHAN_OFFSET (port, elem), val) |
| 632 | |
| 633 | #define sx_read_channel_word(port, elem) \ |
| 634 | read_sx_word (port->board, CHAN_OFFSET (port, elem)) |
| 635 | |
| 636 | |
| 637 | #define sx_write_module_byte(board, addr, elem, val) \ |
| 638 | write_sx_byte (board, MODU_OFFSET (board, addr, elem), val) |
| 639 | |
| 640 | #define sx_read_module_byte(board, addr, elem) \ |
| 641 | read_sx_byte (board, MODU_OFFSET (board, addr, elem)) |
| 642 | |
| 643 | #define sx_write_module_word(board, addr, elem, val) \ |
| 644 | write_sx_word (board, MODU_OFFSET (board, addr, elem), val) |
| 645 | |
| 646 | #define sx_read_module_word(board, addr, elem) \ |
| 647 | read_sx_word (board, MODU_OFFSET (board, addr, elem)) |
| 648 | |
| 649 | |
| 650 | #define sx_write_board_byte(board, elem, val) \ |
| 651 | write_sx_byte (board, BRD_OFFSET (board, elem), val) |
| 652 | |
| 653 | #define sx_read_board_byte(board, elem) \ |
| 654 | read_sx_byte (board, BRD_OFFSET (board, elem)) |
| 655 | |
| 656 | #define sx_write_board_word(board, elem, val) \ |
| 657 | write_sx_word (board, BRD_OFFSET (board, elem), val) |
| 658 | |
| 659 | #define sx_read_board_word(board, elem) \ |
| 660 | read_sx_word (board, BRD_OFFSET (board, elem)) |
| 661 | |
| 662 | |
| 663 | static int sx_start_board (struct sx_board *board) |
| 664 | { |
| 665 | if (IS_SX_BOARD (board)) { |
| 666 | write_sx_byte (board, SX_CONFIG, SX_CONF_BUSEN); |
| 667 | } else if (IS_EISA_BOARD(board)) { |
| 668 | write_sx_byte(board, SI2_EISA_OFF, SI2_EISA_VAL); |
| 669 | outb((board->irq<<4)|4, board->eisa_base+0xc02); |
| 670 | } else if (IS_SI1_BOARD(board)) { |
| 671 | write_sx_byte (board, SI1_ISA_RESET_CLEAR, 0); |
| 672 | write_sx_byte (board, SI1_ISA_INTCL, 0); |
| 673 | } else { |
| 674 | /* Don't bug me about the clear_set. |
| 675 | I haven't the foggiest idea what it's about -- REW */ |
| 676 | write_sx_byte (board, SI2_ISA_RESET, SI2_ISA_RESET_CLEAR); |
| 677 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); |
| 678 | } |
| 679 | return 1; |
| 680 | } |
| 681 | |
| 682 | #define SX_IRQ_REG_VAL(board) \ |
| 683 | ((board->flags & SX_ISA_BOARD)?(board->irq << 4):0) |
| 684 | |
| 685 | /* Note. The SX register is write-only. Therefore, we have to enable the |
| 686 | bus too. This is a no-op, if you don't mess with this driver... */ |
| 687 | static int sx_start_interrupts (struct sx_board *board) |
| 688 | { |
| 689 | |
| 690 | /* Don't call this with board->irq == 0 */ |
| 691 | |
| 692 | if (IS_SX_BOARD(board)) { |
| 693 | write_sx_byte (board, SX_CONFIG, SX_IRQ_REG_VAL (board) | |
| 694 | SX_CONF_BUSEN | |
| 695 | SX_CONF_HOSTIRQ); |
| 696 | } else if (IS_EISA_BOARD(board)) { |
| 697 | inb(board->eisa_base+0xc03); |
| 698 | } else if (IS_SI1_BOARD(board)) { |
| 699 | write_sx_byte (board, SI1_ISA_INTCL,0); |
| 700 | write_sx_byte (board, SI1_ISA_INTCL_CLEAR,0); |
| 701 | } else { |
| 702 | switch (board->irq) { |
| 703 | case 11:write_sx_byte (board, SI2_ISA_IRQ11, SI2_ISA_IRQ11_SET);break; |
| 704 | case 12:write_sx_byte (board, SI2_ISA_IRQ12, SI2_ISA_IRQ12_SET);break; |
| 705 | case 15:write_sx_byte (board, SI2_ISA_IRQ15, SI2_ISA_IRQ15_SET);break; |
| 706 | default:printk (KERN_INFO "sx: SI/XIO card doesn't support interrupt %d.\n", |
| 707 | board->irq); |
| 708 | return 0; |
| 709 | } |
| 710 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); |
| 711 | } |
| 712 | |
| 713 | return 1; |
| 714 | } |
| 715 | |
| 716 | |
| 717 | static int sx_send_command (struct sx_port *port, |
| 718 | int command, int mask, int newstat) |
| 719 | { |
| 720 | func_enter2 (); |
| 721 | write_sx_byte (port->board, CHAN_OFFSET (port, hi_hstat), command); |
| 722 | func_exit (); |
| 723 | return sx_busy_wait_eq (port->board, CHAN_OFFSET (port, hi_hstat), mask, newstat); |
| 724 | } |
| 725 | |
| 726 | |
| 727 | static char *mod_type_s (int module_type) |
| 728 | { |
| 729 | switch (module_type) { |
| 730 | case TA4: return "TA4"; |
| 731 | case TA8: return "TA8"; |
| 732 | case TA4_ASIC: return "TA4_ASIC"; |
| 733 | case TA8_ASIC: return "TA8_ASIC"; |
| 734 | case MTA_CD1400:return "MTA_CD1400"; |
| 735 | case SXDC: return "SXDC"; |
| 736 | default:return "Unknown/invalid"; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | |
| 741 | static char *pan_type_s (int pan_type) |
| 742 | { |
| 743 | switch (pan_type) { |
| 744 | case MOD_RS232DB25: return "MOD_RS232DB25"; |
| 745 | case MOD_RS232RJ45: return "MOD_RS232RJ45"; |
| 746 | case MOD_RS422DB25: return "MOD_RS422DB25"; |
| 747 | case MOD_PARALLEL: return "MOD_PARALLEL"; |
| 748 | case MOD_2_RS232DB25: return "MOD_2_RS232DB25"; |
| 749 | case MOD_2_RS232RJ45: return "MOD_2_RS232RJ45"; |
| 750 | case MOD_2_RS422DB25: return "MOD_2_RS422DB25"; |
| 751 | case MOD_RS232DB25MALE: return "MOD_RS232DB25MALE"; |
| 752 | case MOD_2_PARALLEL: return "MOD_2_PARALLEL"; |
| 753 | case MOD_BLANK: return "empty"; |
| 754 | default:return "invalid"; |
| 755 | } |
| 756 | } |
| 757 | |
| 758 | |
| 759 | static int mod_compat_type (int module_type) |
| 760 | { |
| 761 | return module_type >> 4; |
| 762 | } |
| 763 | |
| 764 | static void sx_reconfigure_port(struct sx_port *port) |
| 765 | { |
| 766 | if (sx_read_channel_byte (port, hi_hstat) == HS_IDLE_OPEN) { |
| 767 | if (sx_send_command (port, HS_CONFIG, -1, HS_IDLE_OPEN) != 1) { |
| 768 | printk (KERN_WARNING "sx: Sent reconfigure command, but card didn't react.\n"); |
| 769 | } |
| 770 | } else { |
| 771 | sx_dprintk (SX_DEBUG_TERMIOS, |
| 772 | "sx: Not sending reconfigure: port isn't open (%02x).\n", |
| 773 | sx_read_channel_byte (port, hi_hstat)); |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | static void sx_setsignals (struct sx_port *port, int dtr, int rts) |
| 778 | { |
| 779 | int t; |
| 780 | func_enter2 (); |
| 781 | |
| 782 | t = sx_read_channel_byte (port, hi_op); |
| 783 | if (dtr >= 0) t = dtr? (t | OP_DTR): (t & ~OP_DTR); |
| 784 | if (rts >= 0) t = rts? (t | OP_RTS): (t & ~OP_RTS); |
| 785 | sx_write_channel_byte (port, hi_op, t); |
| 786 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "setsignals: %d/%d\n", dtr, rts); |
| 787 | |
| 788 | func_exit (); |
| 789 | } |
| 790 | |
| 791 | |
| 792 | |
| 793 | static int sx_getsignals (struct sx_port *port) |
| 794 | { |
| 795 | int i_stat,o_stat; |
| 796 | |
| 797 | o_stat = sx_read_channel_byte (port, hi_op); |
| 798 | i_stat = sx_read_channel_byte (port, hi_ip); |
| 799 | |
| 800 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "getsignals: %d/%d (%d/%d) %02x/%02x\n", |
| 801 | (o_stat & OP_DTR) != 0, (o_stat & OP_RTS) != 0, |
| 802 | port->c_dcd, sx_get_CD (port), |
| 803 | sx_read_channel_byte (port, hi_ip), |
| 804 | sx_read_channel_byte (port, hi_state)); |
| 805 | |
| 806 | return (((o_stat & OP_DTR)?TIOCM_DTR:0) | |
| 807 | ((o_stat & OP_RTS)?TIOCM_RTS:0) | |
| 808 | ((i_stat & IP_CTS)?TIOCM_CTS:0) | |
| 809 | ((i_stat & IP_DCD)?TIOCM_CAR:0) | |
| 810 | ((i_stat & IP_DSR)?TIOCM_DSR:0) | |
| 811 | ((i_stat & IP_RI)?TIOCM_RNG:0) |
| 812 | ); |
| 813 | } |
| 814 | |
| 815 | |
| 816 | static void sx_set_baud (struct sx_port *port) |
| 817 | { |
| 818 | int t; |
| 819 | |
| 820 | if (port->board->ta_type == MOD_SXDC) { |
| 821 | switch (port->gs.baud) { |
| 822 | /* Save some typing work... */ |
| 823 | #define e(x) case x:t= BAUD_ ## x ; break |
| 824 | e(50);e(75);e(110);e(150);e(200);e(300);e(600); |
| 825 | e(1200);e(1800);e(2000);e(2400);e(4800);e(7200); |
| 826 | e(9600);e(14400);e(19200);e(28800);e(38400); |
| 827 | e(56000);e(57600);e(64000);e(76800);e(115200); |
| 828 | e(128000);e(150000);e(230400);e(256000);e(460800); |
| 829 | e(921600); |
| 830 | case 134 :t = BAUD_134_5; break; |
| 831 | case 0 :t = -1; |
| 832 | break; |
| 833 | default: |
| 834 | /* Can I return "invalid"? */ |
| 835 | t = BAUD_9600; |
| 836 | printk (KERN_INFO "sx: unsupported baud rate: %d.\n", port->gs.baud); |
| 837 | break; |
| 838 | } |
| 839 | #undef e |
| 840 | if (t > 0) { |
| 841 | /* The baud rate is not set to 0, so we're enabeling DTR... -- REW */ |
| 842 | sx_setsignals (port, 1, -1); |
| 843 | /* XXX This is not TA & MTA compatible */ |
| 844 | sx_write_channel_byte (port, hi_csr, 0xff); |
| 845 | |
| 846 | sx_write_channel_byte (port, hi_txbaud, t); |
| 847 | sx_write_channel_byte (port, hi_rxbaud, t); |
| 848 | } else { |
| 849 | sx_setsignals (port, 0, -1); |
| 850 | } |
| 851 | } else { |
| 852 | switch (port->gs.baud) { |
| 853 | #define e(x) case x:t= CSR_ ## x ; break |
| 854 | e(75);e(150);e(300);e(600);e(1200);e(2400);e(4800); |
| 855 | e(1800);e(9600); |
| 856 | e(19200);e(57600);e(38400); |
| 857 | /* TA supports 110, but not 115200, MTA supports 115200, but not 110 */ |
| 858 | case 110: |
| 859 | if (port->board->ta_type == MOD_TA) { |
| 860 | t = CSR_110; |
| 861 | break; |
| 862 | } else { |
| 863 | t = CSR_9600; |
| 864 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); |
| 865 | break; |
| 866 | } |
| 867 | case 115200: |
| 868 | if (port->board->ta_type == MOD_TA) { |
| 869 | t = CSR_9600; |
| 870 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); |
| 871 | break; |
| 872 | } else { |
| 873 | t = CSR_110; |
| 874 | break; |
| 875 | } |
| 876 | case 0 :t = -1; |
| 877 | break; |
| 878 | default: |
| 879 | t = CSR_9600; |
| 880 | printk (KERN_INFO "sx: Unsupported baud rate: %d.\n", port->gs.baud); |
| 881 | break; |
| 882 | } |
| 883 | #undef e |
| 884 | if (t >= 0) { |
| 885 | sx_setsignals (port, 1, -1); |
| 886 | sx_write_channel_byte (port, hi_csr, t * 0x11); |
| 887 | } else { |
| 888 | sx_setsignals (port, 0, -1); |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | |
| 894 | /* Simon Allen's version of this routine was 225 lines long. 85 is a lot |
| 895 | better. -- REW */ |
| 896 | |
| 897 | static int sx_set_real_termios (void *ptr) |
| 898 | { |
| 899 | struct sx_port *port = ptr; |
| 900 | |
| 901 | func_enter2(); |
| 902 | |
| 903 | if (!port->gs.tty) |
| 904 | return 0; |
| 905 | |
| 906 | /* What is this doing here? -- REW |
| 907 | Ha! figured it out. It is to allow you to get DTR active again |
| 908 | if you've dropped it with stty 0. Moved to set_baud, where it |
| 909 | belongs (next to the drop dtr if baud == 0) -- REW */ |
| 910 | /* sx_setsignals (port, 1, -1); */ |
| 911 | |
| 912 | sx_set_baud (port); |
| 913 | |
| 914 | #define CFLAG port->gs.tty->termios->c_cflag |
| 915 | sx_write_channel_byte (port, hi_mr1, |
| 916 | (C_PARENB (port->gs.tty)? MR1_WITH:MR1_NONE) | |
| 917 | (C_PARODD (port->gs.tty)? MR1_ODD:MR1_EVEN) | |
| 918 | (C_CRTSCTS(port->gs.tty)? MR1_RTS_RXFLOW:0) | |
| 919 | (((CFLAG & CSIZE)==CS8) ? MR1_8_BITS:0) | |
| 920 | (((CFLAG & CSIZE)==CS7) ? MR1_7_BITS:0) | |
| 921 | (((CFLAG & CSIZE)==CS6) ? MR1_6_BITS:0) | |
| 922 | (((CFLAG & CSIZE)==CS5) ? MR1_5_BITS:0) ); |
| 923 | |
| 924 | sx_write_channel_byte (port, hi_mr2, |
| 925 | (C_CRTSCTS(port->gs.tty)?MR2_CTS_TXFLOW:0) | |
| 926 | (C_CSTOPB (port->gs.tty)?MR2_2_STOP:MR2_1_STOP)); |
| 927 | |
| 928 | switch (CFLAG & CSIZE) { |
| 929 | case CS8:sx_write_channel_byte (port, hi_mask, 0xff);break; |
| 930 | case CS7:sx_write_channel_byte (port, hi_mask, 0x7f);break; |
| 931 | case CS6:sx_write_channel_byte (port, hi_mask, 0x3f);break; |
| 932 | case CS5:sx_write_channel_byte (port, hi_mask, 0x1f);break; |
| 933 | default: |
Andrew Morton | 19dfe31 | 2006-02-03 03:04:04 -0800 | [diff] [blame] | 934 | printk (KERN_INFO "sx: Invalid wordsize: %u\n", CFLAG & CSIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | break; |
| 936 | } |
| 937 | |
| 938 | sx_write_channel_byte (port, hi_prtcl, |
| 939 | (I_IXON (port->gs.tty)?SP_TXEN:0) | |
| 940 | (I_IXOFF (port->gs.tty)?SP_RXEN:0) | |
| 941 | (I_IXANY (port->gs.tty)?SP_TANY:0) | |
| 942 | SP_DCEN); |
| 943 | |
| 944 | sx_write_channel_byte (port, hi_break, |
| 945 | (I_IGNBRK(port->gs.tty)?BR_IGN:0 | |
| 946 | I_BRKINT(port->gs.tty)?BR_INT:0)); |
| 947 | |
| 948 | sx_write_channel_byte (port, hi_txon, START_CHAR (port->gs.tty)); |
| 949 | sx_write_channel_byte (port, hi_rxon, START_CHAR (port->gs.tty)); |
| 950 | sx_write_channel_byte (port, hi_txoff, STOP_CHAR (port->gs.tty)); |
| 951 | sx_write_channel_byte (port, hi_rxoff, STOP_CHAR (port->gs.tty)); |
| 952 | |
| 953 | sx_reconfigure_port(port); |
| 954 | |
| 955 | /* Tell line discipline whether we will do input cooking */ |
| 956 | if(I_OTHER(port->gs.tty)) { |
| 957 | clear_bit(TTY_HW_COOK_IN, &port->gs.tty->flags); |
| 958 | } else { |
| 959 | set_bit(TTY_HW_COOK_IN, &port->gs.tty->flags); |
| 960 | } |
Andrew Morton | 19dfe31 | 2006-02-03 03:04:04 -0800 | [diff] [blame] | 961 | sx_dprintk (SX_DEBUG_TERMIOS, "iflags: %x(%d) ", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | port->gs.tty->termios->c_iflag, |
| 963 | I_OTHER(port->gs.tty)); |
| 964 | |
| 965 | |
| 966 | /* Tell line discipline whether we will do output cooking. |
| 967 | * If OPOST is set and no other output flags are set then we can do output |
| 968 | * processing. Even if only *one* other flag in the O_OTHER group is set |
| 969 | * we do cooking in software. |
| 970 | */ |
| 971 | if(O_OPOST(port->gs.tty) && !O_OTHER(port->gs.tty)) { |
| 972 | set_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags); |
| 973 | } else { |
| 974 | clear_bit(TTY_HW_COOK_OUT, &port->gs.tty->flags); |
| 975 | } |
Andrew Morton | 19dfe31 | 2006-02-03 03:04:04 -0800 | [diff] [blame] | 976 | sx_dprintk (SX_DEBUG_TERMIOS, "oflags: %x(%d)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | port->gs.tty->termios->c_oflag, |
| 978 | O_OTHER(port->gs.tty)); |
| 979 | /* port->c_dcd = sx_get_CD (port); */ |
| 980 | func_exit (); |
| 981 | return 0; |
| 982 | } |
| 983 | |
| 984 | |
| 985 | |
| 986 | /* ********************************************************************** * |
| 987 | * the interrupt related routines * |
| 988 | * ********************************************************************** */ |
| 989 | |
| 990 | /* Note: |
| 991 | Other drivers use the macro "MIN" to calculate how much to copy. |
| 992 | This has the disadvantage that it will evaluate parts twice. That's |
| 993 | expensive when it's IO (and the compiler cannot optimize those away!). |
| 994 | Moreover, I'm not sure that you're race-free. |
| 995 | |
| 996 | I assign a value, and then only allow the value to decrease. This |
| 997 | is always safe. This makes the code a few lines longer, and you |
| 998 | know I'm dead against that, but I think it is required in this |
| 999 | case. */ |
| 1000 | |
| 1001 | |
| 1002 | static void sx_transmit_chars (struct sx_port *port) |
| 1003 | { |
| 1004 | int c; |
| 1005 | int tx_ip; |
| 1006 | int txroom; |
| 1007 | |
| 1008 | func_enter2 (); |
| 1009 | sx_dprintk (SX_DEBUG_TRANSMIT, "Port %p: transmit %d chars\n", |
| 1010 | port, port->gs.xmit_cnt); |
| 1011 | |
| 1012 | if (test_and_set_bit (SX_PORT_TRANSMIT_LOCK, &port->locks)) { |
| 1013 | return; |
| 1014 | } |
| 1015 | |
| 1016 | while (1) { |
| 1017 | c = port->gs.xmit_cnt; |
| 1018 | |
| 1019 | sx_dprintk (SX_DEBUG_TRANSMIT, "Copying %d ", c); |
| 1020 | tx_ip = sx_read_channel_byte (port, hi_txipos); |
| 1021 | |
| 1022 | /* Took me 5 minutes to deduce this formula. |
| 1023 | Luckily it is literally in the manual in section 6.5.4.3.5 */ |
| 1024 | txroom = (sx_read_channel_byte (port, hi_txopos) - tx_ip - 1) & 0xff; |
| 1025 | |
| 1026 | /* Don't copy more bytes than there is room for in the buffer */ |
| 1027 | if (c > txroom) |
| 1028 | c = txroom; |
| 1029 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%d) ", c, txroom ); |
| 1030 | |
| 1031 | /* Don't copy past the end of the hardware transmit buffer */ |
| 1032 | if (c > 0x100 - tx_ip) |
| 1033 | c = 0x100 - tx_ip; |
| 1034 | |
| 1035 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%d) ", c, 0x100-tx_ip ); |
| 1036 | |
| 1037 | /* Don't copy pas the end of the source buffer */ |
| 1038 | if (c > SERIAL_XMIT_SIZE - port->gs.xmit_tail) |
| 1039 | c = SERIAL_XMIT_SIZE - port->gs.xmit_tail; |
| 1040 | |
| 1041 | sx_dprintk (SX_DEBUG_TRANSMIT, " %d(%ld) \n", |
| 1042 | c, SERIAL_XMIT_SIZE- port->gs.xmit_tail); |
| 1043 | |
| 1044 | /* If for one reason or another, we can't copy more data, we're done! */ |
| 1045 | if (c == 0) break; |
| 1046 | |
| 1047 | |
| 1048 | memcpy_toio (port->board->base + CHAN_OFFSET(port,hi_txbuf) + tx_ip, |
| 1049 | port->gs.xmit_buf + port->gs.xmit_tail, c); |
| 1050 | |
| 1051 | /* Update the pointer in the card */ |
| 1052 | sx_write_channel_byte (port, hi_txipos, (tx_ip+c) & 0xff); |
| 1053 | |
| 1054 | /* Update the kernel buffer end */ |
| 1055 | port->gs.xmit_tail = (port->gs.xmit_tail + c) & (SERIAL_XMIT_SIZE-1); |
| 1056 | |
| 1057 | /* This one last. (this is essential) |
| 1058 | It would allow others to start putting more data into the buffer! */ |
| 1059 | port->gs.xmit_cnt -= c; |
| 1060 | } |
| 1061 | |
| 1062 | if (port->gs.xmit_cnt == 0) { |
| 1063 | sx_disable_tx_interrupts (port); |
| 1064 | } |
| 1065 | |
| 1066 | if ((port->gs.xmit_cnt <= port->gs.wakeup_chars) && port->gs.tty) { |
| 1067 | tty_wakeup(port->gs.tty); |
| 1068 | sx_dprintk (SX_DEBUG_TRANSMIT, "Waking up.... ldisc (%d)....\n", |
| 1069 | port->gs.wakeup_chars); |
| 1070 | } |
| 1071 | |
| 1072 | clear_bit (SX_PORT_TRANSMIT_LOCK, &port->locks); |
| 1073 | func_exit (); |
| 1074 | } |
| 1075 | |
| 1076 | |
| 1077 | /* Note the symmetry between receiving chars and transmitting them! |
| 1078 | Note: The kernel should have implemented both a receive buffer and |
| 1079 | a transmit buffer. */ |
| 1080 | |
| 1081 | /* Inlined: Called only once. Remove the inline when you add another call */ |
| 1082 | static inline void sx_receive_chars (struct sx_port *port) |
| 1083 | { |
| 1084 | int c; |
| 1085 | int rx_op; |
| 1086 | struct tty_struct *tty; |
| 1087 | int copied=0; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1088 | unsigned char *rp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | |
| 1090 | func_enter2 (); |
| 1091 | tty = port->gs.tty; |
| 1092 | while (1) { |
| 1093 | rx_op = sx_read_channel_byte (port, hi_rxopos); |
| 1094 | c = (sx_read_channel_byte (port, hi_rxipos) - rx_op) & 0xff; |
| 1095 | |
| 1096 | sx_dprintk (SX_DEBUG_RECEIVE, "rxop=%d, c = %d.\n", rx_op, c); |
| 1097 | |
| 1098 | /* Don't copy more bytes than there is room for in the buffer */ |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1099 | |
| 1100 | c = tty_prepare_flip_string(tty, &rp, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
| 1102 | sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c); |
| 1103 | |
| 1104 | /* Don't copy past the end of the hardware receive buffer */ |
| 1105 | if (rx_op + c > 0x100) c = 0x100 - rx_op; |
| 1106 | |
| 1107 | sx_dprintk (SX_DEBUG_RECEIVE, "c = %d.\n", c); |
| 1108 | |
| 1109 | /* If for one reason or another, we can't copy more data, we're done! */ |
| 1110 | if (c == 0) break; |
| 1111 | |
| 1112 | sx_dprintk (SX_DEBUG_RECEIVE , "Copying over %d chars. First is %d at %lx\n", c, |
| 1113 | read_sx_byte (port->board, CHAN_OFFSET(port,hi_rxbuf) + rx_op), |
| 1114 | CHAN_OFFSET(port, hi_rxbuf)); |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 1115 | memcpy_fromio (rp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | port->board->base + CHAN_OFFSET(port,hi_rxbuf) + rx_op, c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | |
| 1118 | /* This one last. ( Not essential.) |
| 1119 | It allows the card to start putting more data into the buffer! |
| 1120 | Update the pointer in the card */ |
| 1121 | sx_write_channel_byte (port, hi_rxopos, (rx_op + c) & 0xff); |
| 1122 | |
| 1123 | copied += c; |
| 1124 | } |
| 1125 | if (copied) { |
| 1126 | struct timeval tv; |
| 1127 | |
| 1128 | do_gettimeofday (&tv); |
| 1129 | sx_dprintk (SX_DEBUG_RECEIVE, |
| 1130 | "pushing flipq port %d (%3d chars): %d.%06d (%d/%d)\n", |
| 1131 | port->line, copied, |
| 1132 | (int) (tv.tv_sec % 60), (int)tv.tv_usec, tty->raw, tty->real_raw); |
| 1133 | |
| 1134 | /* Tell the rest of the system the news. Great news. New characters! */ |
| 1135 | tty_flip_buffer_push (tty); |
| 1136 | /* tty_schedule_flip (tty); */ |
| 1137 | } |
| 1138 | |
| 1139 | func_exit (); |
| 1140 | } |
| 1141 | |
| 1142 | /* Inlined: it is called only once. Remove the inline if you add another |
| 1143 | call */ |
| 1144 | static inline void sx_check_modem_signals (struct sx_port *port) |
| 1145 | { |
| 1146 | int hi_state; |
| 1147 | int c_dcd; |
| 1148 | |
| 1149 | hi_state = sx_read_channel_byte (port, hi_state); |
| 1150 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "Checking modem signals (%d/%d)\n", |
| 1151 | port->c_dcd, sx_get_CD (port)); |
| 1152 | |
| 1153 | if (hi_state & ST_BREAK) { |
| 1154 | hi_state &= ~ST_BREAK; |
| 1155 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "got a break.\n"); |
| 1156 | sx_write_channel_byte (port, hi_state, hi_state); |
| 1157 | gs_got_break (&port->gs); |
| 1158 | } |
| 1159 | if (hi_state & ST_DCD) { |
| 1160 | hi_state &= ~ST_DCD; |
| 1161 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "got a DCD change.\n"); |
| 1162 | sx_write_channel_byte (port, hi_state, hi_state); |
| 1163 | c_dcd = sx_get_CD (port); |
| 1164 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD is now %d\n", c_dcd); |
| 1165 | if (c_dcd != port->c_dcd) { |
| 1166 | port->c_dcd = c_dcd; |
| 1167 | if (sx_get_CD (port)) { |
| 1168 | /* DCD went UP */ |
| 1169 | if ((sx_read_channel_byte(port, hi_hstat) != HS_IDLE_CLOSED) && |
| 1170 | !(port->gs.tty->termios->c_cflag & CLOCAL) ) { |
| 1171 | /* Are we blocking in open?*/ |
| 1172 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD active, unblocking open\n"); |
| 1173 | wake_up_interruptible(&port->gs.open_wait); |
| 1174 | } else { |
| 1175 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD raised. Ignoring.\n"); |
| 1176 | } |
| 1177 | } else { |
| 1178 | /* DCD went down! */ |
| 1179 | if (!(port->gs.tty->termios->c_cflag & CLOCAL) ) { |
| 1180 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD dropped. hanging up....\n"); |
| 1181 | tty_hangup (port->gs.tty); |
| 1182 | } else { |
| 1183 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "DCD dropped. ignoring.\n"); |
| 1184 | } |
| 1185 | } |
| 1186 | } else { |
| 1187 | sx_dprintk (SX_DEBUG_MODEMSIGNALS, "Hmmm. card told us DCD changed, but it didn't.\n"); |
| 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | |
| 1192 | |
| 1193 | /* This is what an interrupt routine should look like. |
| 1194 | * Small, elegant, clear. |
| 1195 | */ |
| 1196 | |
| 1197 | static irqreturn_t sx_interrupt (int irq, void *ptr, struct pt_regs *regs) |
| 1198 | { |
| 1199 | struct sx_board *board = ptr; |
| 1200 | struct sx_port *port; |
| 1201 | int i; |
| 1202 | |
| 1203 | func_enter (); |
| 1204 | sx_dprintk (SX_DEBUG_FLOW, "sx: enter sx_interrupt (%d/%d)\n", irq, board->irq); |
| 1205 | |
| 1206 | /* AAargh! The order in which to do these things is essential and |
| 1207 | not trivial. |
| 1208 | |
| 1209 | - Rate limit goes before "recursive". Otherwise a series of |
| 1210 | recursive calls will hang the machine in the interrupt routine. |
| 1211 | |
| 1212 | - hardware twiddling goes before "recursive". Otherwise when we |
| 1213 | poll the card, and a recursive interrupt happens, we won't |
| 1214 | ack the card, so it might keep on interrupting us. (especially |
| 1215 | level sensitive interrupt systems like PCI). |
| 1216 | |
| 1217 | - Rate limit goes before hardware twiddling. Otherwise we won't |
| 1218 | catch a card that has gone bonkers. |
| 1219 | |
| 1220 | - The "initialized" test goes after the hardware twiddling. Otherwise |
| 1221 | the card will stick us in the interrupt routine again. |
| 1222 | |
| 1223 | - The initialized test goes before recursive. |
| 1224 | */ |
| 1225 | |
| 1226 | |
| 1227 | |
| 1228 | #ifdef IRQ_RATE_LIMIT |
| 1229 | /* Aaargh! I'm ashamed. This costs more lines-of-code than the |
| 1230 | actual interrupt routine!. (Well, used to when I wrote that comment) */ |
| 1231 | { |
| 1232 | static int lastjif; |
| 1233 | static int nintr=0; |
| 1234 | |
| 1235 | if (lastjif == jiffies) { |
| 1236 | if (++nintr > IRQ_RATE_LIMIT) { |
| 1237 | free_irq (board->irq, board); |
| 1238 | printk (KERN_ERR "sx: Too many interrupts. Turning off interrupt %d.\n", |
| 1239 | board->irq); |
| 1240 | } |
| 1241 | } else { |
| 1242 | lastjif = jiffies; |
| 1243 | nintr = 0; |
| 1244 | } |
| 1245 | } |
| 1246 | #endif |
| 1247 | |
| 1248 | |
| 1249 | if (board->irq == irq) { |
| 1250 | /* Tell the card we've noticed the interrupt. */ |
| 1251 | |
| 1252 | sx_write_board_word (board, cc_int_pending, 0); |
| 1253 | if (IS_SX_BOARD (board)) { |
| 1254 | write_sx_byte (board, SX_RESET_IRQ, 1); |
| 1255 | } else if (IS_EISA_BOARD(board)) { |
| 1256 | inb(board->eisa_base+0xc03); |
| 1257 | write_sx_word(board, 8, 0); |
| 1258 | } else { |
| 1259 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_CLEAR); |
| 1260 | write_sx_byte (board, SI2_ISA_INTCLEAR, SI2_ISA_INTCLEAR_SET); |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | if (!sx_initialized) |
| 1265 | return IRQ_HANDLED; |
| 1266 | if (!(board->flags & SX_BOARD_INITIALIZED)) |
| 1267 | return IRQ_HANDLED; |
| 1268 | |
| 1269 | if (test_and_set_bit (SX_BOARD_INTR_LOCK, &board->locks)) { |
| 1270 | printk (KERN_ERR "Recursive interrupt! (%d)\n", board->irq); |
| 1271 | return IRQ_HANDLED; |
| 1272 | } |
| 1273 | |
| 1274 | for (i=0;i<board->nports;i++) { |
| 1275 | port = &board->ports[i]; |
| 1276 | if (port->gs.flags & GS_ACTIVE) { |
| 1277 | if (sx_read_channel_byte (port, hi_state)) { |
| 1278 | sx_dprintk (SX_DEBUG_INTERRUPTS, |
| 1279 | "Port %d: modem signal change?... \n", i); |
| 1280 | sx_check_modem_signals (port); |
| 1281 | } |
| 1282 | if (port->gs.xmit_cnt) { |
| 1283 | sx_transmit_chars (port); |
| 1284 | } |
| 1285 | if (!(port->gs.flags & SX_RX_THROTTLE)) { |
| 1286 | sx_receive_chars (port); |
| 1287 | } |
| 1288 | } |
| 1289 | } |
| 1290 | |
| 1291 | clear_bit (SX_BOARD_INTR_LOCK, &board->locks); |
| 1292 | |
| 1293 | sx_dprintk (SX_DEBUG_FLOW, "sx: exit sx_interrupt (%d/%d)\n", irq, board->irq); |
| 1294 | func_exit (); |
| 1295 | return IRQ_HANDLED; |
| 1296 | } |
| 1297 | |
| 1298 | |
| 1299 | static void sx_pollfunc (unsigned long data) |
| 1300 | { |
| 1301 | struct sx_board *board = (struct sx_board *) data; |
| 1302 | |
| 1303 | func_enter (); |
| 1304 | |
| 1305 | sx_interrupt (0, board, NULL); |
| 1306 | |
| 1307 | init_timer(&board->timer); |
| 1308 | |
| 1309 | board->timer.expires = jiffies + sx_poll; |
| 1310 | add_timer (&board->timer); |
| 1311 | func_exit (); |
| 1312 | } |
| 1313 | |
| 1314 | |
| 1315 | |
| 1316 | /* ********************************************************************** * |
| 1317 | * Here are the routines that actually * |
| 1318 | * interface with the generic_serial driver * |
| 1319 | * ********************************************************************** */ |
| 1320 | |
| 1321 | /* Ehhm. I don't know how to fiddle with interrupts on the SX card. --REW */ |
| 1322 | /* Hmm. Ok I figured it out. You don't. */ |
| 1323 | |
| 1324 | static void sx_disable_tx_interrupts (void * ptr) |
| 1325 | { |
| 1326 | struct sx_port *port = ptr; |
| 1327 | func_enter2(); |
| 1328 | |
| 1329 | port->gs.flags &= ~GS_TX_INTEN; |
| 1330 | |
| 1331 | func_exit(); |
| 1332 | } |
| 1333 | |
| 1334 | |
| 1335 | static void sx_enable_tx_interrupts (void * ptr) |
| 1336 | { |
| 1337 | struct sx_port *port = ptr; |
| 1338 | int data_in_buffer; |
| 1339 | func_enter2(); |
| 1340 | |
| 1341 | /* First transmit the characters that we're supposed to */ |
| 1342 | sx_transmit_chars (port); |
| 1343 | |
| 1344 | /* The sx card will never interrupt us if we don't fill the buffer |
| 1345 | past 25%. So we keep considering interrupts off if that's the case. */ |
| 1346 | data_in_buffer = (sx_read_channel_byte (port, hi_txipos) - |
| 1347 | sx_read_channel_byte (port, hi_txopos)) & 0xff; |
| 1348 | |
| 1349 | /* XXX Must be "HIGH_WATER" for SI card according to doc. */ |
| 1350 | if (data_in_buffer < LOW_WATER) |
| 1351 | port->gs.flags &= ~GS_TX_INTEN; |
| 1352 | |
| 1353 | func_exit(); |
| 1354 | } |
| 1355 | |
| 1356 | |
| 1357 | static void sx_disable_rx_interrupts (void * ptr) |
| 1358 | { |
| 1359 | /* struct sx_port *port = ptr; */ |
| 1360 | func_enter(); |
| 1361 | |
| 1362 | func_exit(); |
| 1363 | } |
| 1364 | |
| 1365 | static void sx_enable_rx_interrupts (void * ptr) |
| 1366 | { |
| 1367 | /* struct sx_port *port = ptr; */ |
| 1368 | func_enter(); |
| 1369 | |
| 1370 | func_exit(); |
| 1371 | } |
| 1372 | |
| 1373 | |
| 1374 | /* Jeez. Isn't this simple? */ |
| 1375 | static int sx_get_CD (void * ptr) |
| 1376 | { |
| 1377 | struct sx_port *port = ptr; |
| 1378 | func_enter2(); |
| 1379 | |
| 1380 | func_exit(); |
| 1381 | return ((sx_read_channel_byte (port, hi_ip) & IP_DCD) != 0); |
| 1382 | } |
| 1383 | |
| 1384 | |
| 1385 | /* Jeez. Isn't this simple? */ |
| 1386 | static int sx_chars_in_buffer (void * ptr) |
| 1387 | { |
| 1388 | struct sx_port *port = ptr; |
| 1389 | func_enter2(); |
| 1390 | |
| 1391 | func_exit(); |
| 1392 | return ((sx_read_channel_byte (port, hi_txipos) - |
| 1393 | sx_read_channel_byte (port, hi_txopos)) & 0xff); |
| 1394 | } |
| 1395 | |
| 1396 | |
| 1397 | static void sx_shutdown_port (void * ptr) |
| 1398 | { |
| 1399 | struct sx_port *port = ptr; |
| 1400 | |
| 1401 | func_enter(); |
| 1402 | |
| 1403 | port->gs.flags &= ~ GS_ACTIVE; |
| 1404 | if (port->gs.tty && (port->gs.tty->termios->c_cflag & HUPCL)) { |
| 1405 | sx_setsignals (port, 0, 0); |
| 1406 | sx_reconfigure_port(port); |
| 1407 | } |
| 1408 | |
| 1409 | func_exit(); |
| 1410 | } |
| 1411 | |
| 1412 | |
| 1413 | |
| 1414 | |
| 1415 | |
| 1416 | /* ********************************************************************** * |
| 1417 | * Here are the routines that actually * |
| 1418 | * interface with the rest of the system * |
| 1419 | * ********************************************************************** */ |
| 1420 | |
| 1421 | static int sx_open (struct tty_struct * tty, struct file * filp) |
| 1422 | { |
| 1423 | struct sx_port *port; |
| 1424 | int retval, line; |
| 1425 | unsigned long flags; |
| 1426 | |
| 1427 | func_enter(); |
| 1428 | |
| 1429 | if (!sx_initialized) { |
| 1430 | return -EIO; |
| 1431 | } |
| 1432 | |
| 1433 | line = tty->index; |
| 1434 | sx_dprintk (SX_DEBUG_OPEN, "%d: opening line %d. tty=%p ctty=%p, np=%d)\n", |
| 1435 | current->pid, line, tty, current->signal->tty, sx_nports); |
| 1436 | |
| 1437 | if ((line < 0) || (line >= SX_NPORTS) || (line >= sx_nports)) |
| 1438 | return -ENODEV; |
| 1439 | |
| 1440 | port = & sx_ports[line]; |
| 1441 | port->c_dcd = 0; /* Make sure that the first interrupt doesn't detect a |
| 1442 | 1 -> 0 transition. */ |
| 1443 | |
| 1444 | |
| 1445 | sx_dprintk (SX_DEBUG_OPEN, "port = %p c_dcd = %d\n", port, port->c_dcd); |
| 1446 | |
| 1447 | spin_lock_irqsave(&port->gs.driver_lock, flags); |
| 1448 | |
| 1449 | tty->driver_data = port; |
| 1450 | port->gs.tty = tty; |
| 1451 | port->gs.count++; |
| 1452 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); |
| 1453 | |
| 1454 | sx_dprintk (SX_DEBUG_OPEN, "starting port\n"); |
| 1455 | |
| 1456 | /* |
| 1457 | * Start up serial port |
| 1458 | */ |
| 1459 | retval = gs_init_port(&port->gs); |
| 1460 | sx_dprintk (SX_DEBUG_OPEN, "done gs_init\n"); |
| 1461 | if (retval) { |
| 1462 | port->gs.count--; |
| 1463 | return retval; |
| 1464 | } |
| 1465 | |
| 1466 | port->gs.flags |= GS_ACTIVE; |
| 1467 | if (port->gs.count <= 1) |
| 1468 | sx_setsignals (port, 1,1); |
| 1469 | |
| 1470 | #if 0 |
| 1471 | if (sx_debug & SX_DEBUG_OPEN) |
| 1472 | my_hd (port, sizeof (*port)); |
| 1473 | #else |
| 1474 | if (sx_debug & SX_DEBUG_OPEN) |
| 1475 | my_hd_io (port->board->base + port->ch_base, sizeof (*port)); |
| 1476 | #endif |
| 1477 | |
| 1478 | if (port->gs.count <= 1) { |
| 1479 | if (sx_send_command (port, HS_LOPEN, -1, HS_IDLE_OPEN) != 1) { |
| 1480 | printk (KERN_ERR "sx: Card didn't respond to LOPEN command.\n"); |
| 1481 | spin_lock_irqsave(&port->gs.driver_lock, flags); |
| 1482 | port->gs.count--; |
| 1483 | spin_unlock_irqrestore(&port->gs.driver_lock, flags); |
| 1484 | return -EIO; |
| 1485 | } |
| 1486 | } |
| 1487 | |
| 1488 | retval = gs_block_til_ready(port, filp); |
| 1489 | sx_dprintk (SX_DEBUG_OPEN, "Block til ready returned %d. Count=%d\n", |
| 1490 | retval, port->gs.count); |
| 1491 | |
| 1492 | if (retval) { |
| 1493 | /* |
| 1494 | * Don't lower gs.count here because sx_close() will be called later |
| 1495 | */ |
| 1496 | |
| 1497 | return retval; |
| 1498 | } |
| 1499 | /* tty->low_latency = 1; */ |
| 1500 | |
| 1501 | port->c_dcd = sx_get_CD (port); |
| 1502 | sx_dprintk (SX_DEBUG_OPEN, "at open: cd=%d\n", port->c_dcd); |
| 1503 | |
| 1504 | func_exit(); |
| 1505 | return 0; |
| 1506 | |
| 1507 | } |
| 1508 | |
| 1509 | |
| 1510 | static void sx_close (void *ptr) |
| 1511 | { |
| 1512 | struct sx_port *port = ptr; |
| 1513 | /* Give the port 5 seconds to close down. */ |
| 1514 | int to = 5 * HZ; |
| 1515 | |
| 1516 | func_enter (); |
| 1517 | |
| 1518 | sx_setsignals (port, 0, 0); |
| 1519 | sx_reconfigure_port(port); |
| 1520 | sx_send_command (port, HS_CLOSE, 0, 0); |
| 1521 | |
| 1522 | while (to-- && (sx_read_channel_byte (port, hi_hstat) != HS_IDLE_CLOSED)) |
| 1523 | if (msleep_interruptible(10)) |
| 1524 | break; |
| 1525 | if (sx_read_channel_byte (port, hi_hstat) != HS_IDLE_CLOSED) { |
| 1526 | if (sx_send_command (port, HS_FORCE_CLOSED, -1, HS_IDLE_CLOSED) != 1) { |
| 1527 | printk (KERN_ERR |
| 1528 | "sx: sent the force_close command, but card didn't react\n"); |
| 1529 | } else |
| 1530 | sx_dprintk (SX_DEBUG_CLOSE, "sent the force_close command.\n"); |
| 1531 | } |
| 1532 | |
| 1533 | sx_dprintk (SX_DEBUG_CLOSE, "waited %d jiffies for close. count=%d\n", |
| 1534 | 5 * HZ - to - 1, port->gs.count); |
| 1535 | |
| 1536 | if(port->gs.count) { |
| 1537 | sx_dprintk(SX_DEBUG_CLOSE, "WARNING port count:%d\n", port->gs.count); |
| 1538 | //printk ("%s SETTING port count to zero: %p count: %d\n", __FUNCTION__, port, port->gs.count); |
| 1539 | //port->gs.count = 0; |
| 1540 | } |
| 1541 | |
| 1542 | func_exit (); |
| 1543 | } |
| 1544 | |
| 1545 | |
| 1546 | |
| 1547 | /* This is relatively thorough. But then again it is only 20 lines. */ |
| 1548 | #define MARCHUP for (i=min;i<max;i++) |
| 1549 | #define MARCHDOWN for (i=max-1;i>=min;i--) |
| 1550 | #define W0 write_sx_byte (board, i, 0x55) |
| 1551 | #define W1 write_sx_byte (board, i, 0xaa) |
| 1552 | #define R0 if (read_sx_byte (board, i) != 0x55) return 1 |
| 1553 | #define R1 if (read_sx_byte (board, i) != 0xaa) return 1 |
| 1554 | |
| 1555 | /* This memtest takes a human-noticable time. You normally only do it |
| 1556 | once a boot, so I guess that it is worth it. */ |
| 1557 | static int do_memtest (struct sx_board *board, int min, int max) |
| 1558 | { |
| 1559 | int i; |
| 1560 | |
| 1561 | /* This is a marchb. Theoretically, marchb catches much more than |
| 1562 | simpler tests. In practise, the longer test just catches more |
| 1563 | intermittent errors. -- REW |
| 1564 | (For the theory behind memory testing see: |
| 1565 | Testing Semiconductor Memories by A.J. van de Goor.) */ |
| 1566 | MARCHUP {W0;} |
| 1567 | MARCHUP {R0;W1;R1;W0;R0;W1;} |
| 1568 | MARCHUP {R1;W0;W1;} |
| 1569 | MARCHDOWN {R1;W0;W1;W0;} |
| 1570 | MARCHDOWN {R0;W1;W0;} |
| 1571 | |
| 1572 | return 0; |
| 1573 | } |
| 1574 | |
| 1575 | |
| 1576 | #undef MARCHUP |
| 1577 | #undef MARCHDOWN |
| 1578 | #undef W0 |
| 1579 | #undef W1 |
| 1580 | #undef R0 |
| 1581 | #undef R1 |
| 1582 | |
| 1583 | #define MARCHUP for (i=min;i<max;i+=2) |
| 1584 | #define MARCHDOWN for (i=max-1;i>=min;i-=2) |
| 1585 | #define W0 write_sx_word (board, i, 0x55aa) |
| 1586 | #define W1 write_sx_word (board, i, 0xaa55) |
| 1587 | #define R0 if (read_sx_word (board, i) != 0x55aa) return 1 |
| 1588 | #define R1 if (read_sx_word (board, i) != 0xaa55) return 1 |
| 1589 | |
| 1590 | #if 0 |
| 1591 | /* This memtest takes a human-noticable time. You normally only do it |
| 1592 | once a boot, so I guess that it is worth it. */ |
| 1593 | static int do_memtest_w (struct sx_board *board, int min, int max) |
| 1594 | { |
| 1595 | int i; |
| 1596 | |
| 1597 | MARCHUP {W0;} |
| 1598 | MARCHUP {R0;W1;R1;W0;R0;W1;} |
| 1599 | MARCHUP {R1;W0;W1;} |
| 1600 | MARCHDOWN {R1;W0;W1;W0;} |
| 1601 | MARCHDOWN {R0;W1;W0;} |
| 1602 | |
| 1603 | return 0; |
| 1604 | } |
| 1605 | #endif |
| 1606 | |
| 1607 | |
| 1608 | static int sx_fw_ioctl (struct inode *inode, struct file *filp, |
| 1609 | unsigned int cmd, unsigned long arg) |
| 1610 | { |
| 1611 | int rc = 0; |
| 1612 | int __user *descr = (int __user *)arg; |
| 1613 | int i; |
| 1614 | static struct sx_board *board = NULL; |
| 1615 | int nbytes, offset; |
| 1616 | unsigned long data; |
| 1617 | char *tmp; |
| 1618 | |
| 1619 | func_enter(); |
| 1620 | |
| 1621 | #if 0 |
| 1622 | /* Removed superuser check: Sysops can use the permissions on the device |
| 1623 | file to restrict access. Recommendation: Root only. (root.root 600) */ |
| 1624 | if (!capable(CAP_SYS_ADMIN)) { |
| 1625 | return -EPERM; |
| 1626 | } |
| 1627 | #endif |
| 1628 | |
| 1629 | sx_dprintk (SX_DEBUG_FIRMWARE, "IOCTL %x: %lx\n", cmd, arg); |
| 1630 | |
| 1631 | if (!board) board = &boards[0]; |
| 1632 | if (board->flags & SX_BOARD_PRESENT) { |
| 1633 | sx_dprintk (SX_DEBUG_FIRMWARE, "Board present! (%x)\n", |
| 1634 | board->flags); |
| 1635 | } else { |
| 1636 | sx_dprintk (SX_DEBUG_FIRMWARE, "Board not present! (%x) all:", |
| 1637 | board->flags); |
| 1638 | for (i=0;i< SX_NBOARDS;i++) |
| 1639 | sx_dprintk (SX_DEBUG_FIRMWARE, "<%x> ", boards[i].flags); |
| 1640 | sx_dprintk (SX_DEBUG_FIRMWARE, "\n"); |
| 1641 | return -EIO; |
| 1642 | } |
| 1643 | |
| 1644 | switch (cmd) { |
| 1645 | case SXIO_SET_BOARD: |
| 1646 | sx_dprintk (SX_DEBUG_FIRMWARE, "set board to %ld\n", arg); |
| 1647 | if (arg >= SX_NBOARDS) return -EIO; |
| 1648 | sx_dprintk (SX_DEBUG_FIRMWARE, "not out of range\n"); |
| 1649 | if (!(boards[arg].flags & SX_BOARD_PRESENT)) return -EIO; |
| 1650 | sx_dprintk (SX_DEBUG_FIRMWARE, ".. and present!\n"); |
| 1651 | board = &boards[arg]; |
| 1652 | break; |
| 1653 | case SXIO_GET_TYPE: |
| 1654 | rc = -ENOENT; /* If we manage to miss one, return error. */ |
| 1655 | if (IS_SX_BOARD (board)) rc = SX_TYPE_SX; |
| 1656 | if (IS_CF_BOARD (board)) rc = SX_TYPE_CF; |
| 1657 | if (IS_SI_BOARD (board)) rc = SX_TYPE_SI; |
| 1658 | if (IS_SI1_BOARD (board)) rc = SX_TYPE_SI; |
| 1659 | if (IS_EISA_BOARD (board)) rc = SX_TYPE_SI; |
| 1660 | sx_dprintk (SX_DEBUG_FIRMWARE, "returning type= %d\n", rc); |
| 1661 | break; |
| 1662 | case SXIO_DO_RAMTEST: |
| 1663 | if (sx_initialized) /* Already initialized: better not ramtest the board. */ |
| 1664 | return -EPERM; |
| 1665 | if (IS_SX_BOARD (board)) { |
| 1666 | rc = do_memtest (board, 0, 0x7000); |
| 1667 | if (!rc) rc = do_memtest (board, 0, 0x7000); |
| 1668 | /*if (!rc) rc = do_memtest_w (board, 0, 0x7000);*/ |
| 1669 | } else { |
| 1670 | rc = do_memtest (board, 0, 0x7ff8); |
| 1671 | /* if (!rc) rc = do_memtest_w (board, 0, 0x7ff8); */ |
| 1672 | } |
| 1673 | sx_dprintk (SX_DEBUG_FIRMWARE, "returning memtest result= %d\n", rc); |
| 1674 | break; |
| 1675 | case SXIO_DOWNLOAD: |
| 1676 | if (sx_initialized) /* Already initialized */ |
| 1677 | return -EEXIST; |
| 1678 | if (!sx_reset (board)) |
| 1679 | return -EIO; |
| 1680 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); |
| 1681 | |
| 1682 | tmp = kmalloc (SX_CHUNK_SIZE, GFP_USER); |
| 1683 | if (!tmp) return -ENOMEM; |
| 1684 | get_user (nbytes, descr++); |
| 1685 | get_user (offset, descr++); |
| 1686 | get_user (data, descr++); |
| 1687 | while (nbytes && data) { |
| 1688 | for (i=0;i<nbytes;i += SX_CHUNK_SIZE) { |
| 1689 | if (copy_from_user(tmp, (char __user *)data+i, |
| 1690 | (i + SX_CHUNK_SIZE > |
| 1691 | nbytes) ? nbytes - i : |
| 1692 | SX_CHUNK_SIZE)) { |
| 1693 | kfree (tmp); |
| 1694 | return -EFAULT; |
| 1695 | } |
| 1696 | memcpy_toio(board->base2 + offset + i, tmp, |
| 1697 | (i+SX_CHUNK_SIZE>nbytes)?nbytes-i:SX_CHUNK_SIZE); |
| 1698 | } |
| 1699 | |
| 1700 | get_user (nbytes, descr++); |
| 1701 | get_user (offset, descr++); |
| 1702 | get_user (data, descr++); |
| 1703 | } |
| 1704 | kfree (tmp); |
| 1705 | sx_nports += sx_init_board (board); |
| 1706 | rc = sx_nports; |
| 1707 | break; |
| 1708 | case SXIO_INIT: |
| 1709 | if (sx_initialized) /* Already initialized */ |
| 1710 | return -EEXIST; |
| 1711 | /* This is not allowed until all boards are initialized... */ |
| 1712 | for (i=0;i<SX_NBOARDS;i++) { |
| 1713 | if ( (boards[i].flags & SX_BOARD_PRESENT) && |
| 1714 | !(boards[i].flags & SX_BOARD_INITIALIZED)) |
| 1715 | return -EIO; |
| 1716 | } |
| 1717 | for (i=0;i<SX_NBOARDS;i++) |
| 1718 | if (!(boards[i].flags & SX_BOARD_PRESENT)) break; |
| 1719 | |
| 1720 | sx_dprintk (SX_DEBUG_FIRMWARE, "initing portstructs, %d boards, " |
| 1721 | "%d channels, first board: %d ports\n", |
| 1722 | i, sx_nports, boards[0].nports); |
| 1723 | rc = sx_init_portstructs (i, sx_nports); |
| 1724 | sx_init_drivers (); |
| 1725 | if (rc >= 0) |
| 1726 | sx_initialized++; |
| 1727 | break; |
| 1728 | case SXIO_SETDEBUG: |
| 1729 | sx_debug = arg; |
| 1730 | break; |
| 1731 | case SXIO_GETDEBUG: |
| 1732 | rc = sx_debug; |
| 1733 | break; |
| 1734 | case SXIO_GETGSDEBUG: |
| 1735 | case SXIO_SETGSDEBUG: |
| 1736 | rc = -EINVAL; |
| 1737 | break; |
| 1738 | case SXIO_GETNPORTS: |
| 1739 | rc = sx_nports; |
| 1740 | break; |
| 1741 | default: |
| 1742 | printk (KERN_WARNING "Unknown ioctl on firmware device (%x).\n", cmd); |
| 1743 | break; |
| 1744 | } |
| 1745 | func_exit (); |
| 1746 | return rc; |
| 1747 | } |
| 1748 | |
| 1749 | |
| 1750 | static void sx_break (struct tty_struct * tty, int flag) |
| 1751 | { |
| 1752 | struct sx_port *port = tty->driver_data; |
| 1753 | int rv; |
| 1754 | |
| 1755 | func_enter (); |
| 1756 | |
| 1757 | if (flag) |
| 1758 | rv = sx_send_command (port, HS_START, -1, HS_IDLE_BREAK); |
| 1759 | else |
| 1760 | rv = sx_send_command (port, HS_STOP, -1, HS_IDLE_OPEN); |
| 1761 | if (rv != 1) printk (KERN_ERR "sx: couldn't send break (%x).\n", |
| 1762 | read_sx_byte (port->board, CHAN_OFFSET (port, hi_hstat))); |
| 1763 | |
| 1764 | func_exit (); |
| 1765 | } |
| 1766 | |
| 1767 | |
| 1768 | static int sx_tiocmget(struct tty_struct *tty, struct file *file) |
| 1769 | { |
| 1770 | struct sx_port *port = tty->driver_data; |
| 1771 | return sx_getsignals(port); |
| 1772 | } |
| 1773 | |
| 1774 | static int sx_tiocmset(struct tty_struct *tty, struct file *file, |
| 1775 | unsigned int set, unsigned int clear) |
| 1776 | { |
| 1777 | struct sx_port *port = tty->driver_data; |
| 1778 | int rts = -1, dtr = -1; |
| 1779 | |
| 1780 | if (set & TIOCM_RTS) |
| 1781 | rts = 1; |
| 1782 | if (set & TIOCM_DTR) |
| 1783 | dtr = 1; |
| 1784 | if (clear & TIOCM_RTS) |
| 1785 | rts = 0; |
| 1786 | if (clear & TIOCM_DTR) |
| 1787 | dtr = 0; |
| 1788 | |
| 1789 | sx_setsignals(port, dtr, rts); |
| 1790 | sx_reconfigure_port(port); |
| 1791 | return 0; |
| 1792 | } |
| 1793 | |
| 1794 | static int sx_ioctl (struct tty_struct * tty, struct file * filp, |
| 1795 | unsigned int cmd, unsigned long arg) |
| 1796 | { |
| 1797 | int rc; |
| 1798 | struct sx_port *port = tty->driver_data; |
| 1799 | void __user *argp = (void __user *)arg; |
| 1800 | int ival; |
| 1801 | |
| 1802 | /* func_enter2(); */ |
| 1803 | |
| 1804 | rc = 0; |
| 1805 | switch (cmd) { |
| 1806 | case TIOCGSOFTCAR: |
| 1807 | rc = put_user(((tty->termios->c_cflag & CLOCAL) ? 1 : 0), |
| 1808 | (unsigned __user *) argp); |
| 1809 | break; |
| 1810 | case TIOCSSOFTCAR: |
| 1811 | if ((rc = get_user(ival, (unsigned __user *) argp)) == 0) { |
| 1812 | tty->termios->c_cflag = |
| 1813 | (tty->termios->c_cflag & ~CLOCAL) | |
| 1814 | (ival ? CLOCAL : 0); |
| 1815 | } |
| 1816 | break; |
| 1817 | case TIOCGSERIAL: |
| 1818 | rc = gs_getserial(&port->gs, argp); |
| 1819 | break; |
| 1820 | case TIOCSSERIAL: |
| 1821 | rc = gs_setserial(&port->gs, argp); |
| 1822 | break; |
| 1823 | default: |
| 1824 | rc = -ENOIOCTLCMD; |
| 1825 | break; |
| 1826 | } |
| 1827 | |
| 1828 | /* func_exit(); */ |
| 1829 | return rc; |
| 1830 | } |
| 1831 | |
| 1832 | |
| 1833 | /* The throttle/unthrottle scheme for the Specialix card is different |
| 1834 | * from other drivers and deserves some explanation. |
| 1835 | * The Specialix hardware takes care of XON/XOFF |
| 1836 | * and CTS/RTS flow control itself. This means that all we have to |
| 1837 | * do when signalled by the upper tty layer to throttle/unthrottle is |
| 1838 | * to make a note of it here. When we come to read characters from the |
| 1839 | * rx buffers on the card (sx_receive_chars()) we look to see if the |
| 1840 | * upper layer can accept more (as noted here in sx_rx_throt[]). |
| 1841 | * If it can't we simply don't remove chars from the cards buffer. |
| 1842 | * When the tty layer can accept chars, we again note that here and when |
| 1843 | * sx_receive_chars() is called it will remove them from the cards buffer. |
| 1844 | * The card will notice that a ports buffer has drained below some low |
| 1845 | * water mark and will unflow control the line itself, using whatever |
| 1846 | * flow control scheme is in use for that port. -- Simon Allen |
| 1847 | */ |
| 1848 | |
| 1849 | static void sx_throttle (struct tty_struct * tty) |
| 1850 | { |
| 1851 | struct sx_port *port = (struct sx_port *)tty->driver_data; |
| 1852 | |
| 1853 | func_enter2(); |
| 1854 | /* If the port is using any type of input flow |
| 1855 | * control then throttle the port. |
| 1856 | */ |
| 1857 | if((tty->termios->c_cflag & CRTSCTS) || (I_IXOFF(tty)) ) { |
| 1858 | port->gs.flags |= SX_RX_THROTTLE; |
| 1859 | } |
| 1860 | func_exit(); |
| 1861 | } |
| 1862 | |
| 1863 | |
| 1864 | static void sx_unthrottle (struct tty_struct * tty) |
| 1865 | { |
| 1866 | struct sx_port *port = (struct sx_port *)tty->driver_data; |
| 1867 | |
| 1868 | func_enter2(); |
| 1869 | /* Always unthrottle even if flow control is not enabled on |
| 1870 | * this port in case we disabled flow control while the port |
| 1871 | * was throttled |
| 1872 | */ |
| 1873 | port->gs.flags &= ~SX_RX_THROTTLE; |
| 1874 | func_exit(); |
| 1875 | return; |
| 1876 | } |
| 1877 | |
| 1878 | |
| 1879 | /* ********************************************************************** * |
| 1880 | * Here are the initialization routines. * |
| 1881 | * ********************************************************************** */ |
| 1882 | |
| 1883 | |
| 1884 | |
| 1885 | |
| 1886 | static int sx_init_board (struct sx_board *board) |
| 1887 | { |
| 1888 | int addr; |
| 1889 | int chans; |
| 1890 | int type; |
| 1891 | |
| 1892 | func_enter(); |
| 1893 | |
| 1894 | /* This is preceded by downloading the download code. */ |
| 1895 | |
| 1896 | board->flags |= SX_BOARD_INITIALIZED; |
| 1897 | |
| 1898 | if (read_sx_byte (board, 0)) |
| 1899 | /* CF boards may need this. */ |
| 1900 | write_sx_byte(board,0, 0); |
| 1901 | |
| 1902 | /* This resets the processor again, to make sure it didn't do any |
| 1903 | foolish things while we were downloading the image */ |
| 1904 | if (!sx_reset (board)) |
| 1905 | return 0; |
| 1906 | |
| 1907 | sx_start_board (board); |
| 1908 | udelay (10); |
| 1909 | if (!sx_busy_wait_neq (board, 0, 0xff, 0)) { |
| 1910 | printk (KERN_ERR "sx: Ooops. Board won't initialize.\n"); |
| 1911 | return 0; |
| 1912 | } |
| 1913 | |
| 1914 | /* Ok. So now the processor on the card is running. It gathered |
| 1915 | some info for us... */ |
| 1916 | sx_dprintk (SX_DEBUG_INIT, "The sxcard structure:\n"); |
| 1917 | if (sx_debug & SX_DEBUG_INIT) my_hd_io (board->base, 0x10); |
| 1918 | sx_dprintk (SX_DEBUG_INIT, "the first sx_module structure:\n"); |
| 1919 | if (sx_debug & SX_DEBUG_INIT) my_hd_io (board->base + 0x80, 0x30); |
| 1920 | |
| 1921 | sx_dprintk (SX_DEBUG_INIT, |
| 1922 | "init_status: %x, %dk memory, firmware V%x.%02x,\n", |
| 1923 | read_sx_byte (board, 0), read_sx_byte(board, 1), |
| 1924 | read_sx_byte (board, 5), read_sx_byte(board, 4)); |
| 1925 | |
| 1926 | if (read_sx_byte (board, 0) == 0xff) { |
| 1927 | printk (KERN_INFO "sx: No modules found. Sorry.\n"); |
| 1928 | board->nports = 0; |
| 1929 | return 0; |
| 1930 | } |
| 1931 | |
| 1932 | chans = 0; |
| 1933 | |
| 1934 | if (IS_SX_BOARD(board)) { |
| 1935 | sx_write_board_word (board, cc_int_count, sx_maxints); |
| 1936 | } else { |
| 1937 | if (sx_maxints) |
| 1938 | sx_write_board_word (board, cc_int_count, SI_PROCESSOR_CLOCK/8/sx_maxints); |
| 1939 | } |
| 1940 | |
| 1941 | /* grab the first module type... */ |
| 1942 | /* board->ta_type = mod_compat_type (read_sx_byte (board, 0x80 + 0x08)); */ |
| 1943 | board->ta_type = mod_compat_type (sx_read_module_byte (board, 0x80, mc_chip)); |
| 1944 | |
| 1945 | /* XXX byteorder */ |
| 1946 | for (addr = 0x80;addr != 0;addr = read_sx_word (board, addr) & 0x7fff) { |
| 1947 | type = sx_read_module_byte (board, addr, mc_chip); |
| 1948 | sx_dprintk (SX_DEBUG_INIT, "Module at %x: %d channels\n", |
| 1949 | addr, read_sx_byte (board, addr + 2)); |
| 1950 | |
| 1951 | chans += sx_read_module_byte (board, addr, mc_type); |
| 1952 | |
| 1953 | sx_dprintk (SX_DEBUG_INIT, "module is an %s, which has %s/%s panels\n", |
| 1954 | mod_type_s (type), |
| 1955 | pan_type_s (sx_read_module_byte (board, addr, mc_mods) & 0xf), |
| 1956 | pan_type_s (sx_read_module_byte (board, addr, mc_mods) >> 4)); |
| 1957 | |
| 1958 | sx_dprintk (SX_DEBUG_INIT, "CD1400 versions: %x/%x, ASIC version: %x\n", |
| 1959 | sx_read_module_byte (board, addr, mc_rev1), |
| 1960 | sx_read_module_byte (board, addr, mc_rev2), |
| 1961 | sx_read_module_byte (board, addr, mc_mtaasic_rev)); |
| 1962 | |
| 1963 | /* The following combinations are illegal: It should theoretically |
| 1964 | work, but timing problems make the bus HANG. */ |
| 1965 | |
| 1966 | if (mod_compat_type (type) != board->ta_type) { |
| 1967 | printk (KERN_ERR "sx: This is an invalid configuration.\n" |
| 1968 | "Don't mix TA/MTA/SXDC on the same hostadapter.\n"); |
| 1969 | chans=0; |
| 1970 | break; |
| 1971 | } |
| 1972 | if ((IS_EISA_BOARD(board) || |
| 1973 | IS_SI_BOARD(board)) && (mod_compat_type(type) == 4)) { |
| 1974 | printk (KERN_ERR "sx: This is an invalid configuration.\n" |
| 1975 | "Don't use SXDCs on an SI/XIO adapter.\n"); |
| 1976 | chans=0; |
| 1977 | break; |
| 1978 | } |
| 1979 | #if 0 /* Problem fixed: firmware 3.05 */ |
| 1980 | if (IS_SX_BOARD(board) && (type == TA8)) { |
| 1981 | /* There are some issues with the firmware and the DCD/RTS |
| 1982 | lines. It might work if you tie them together or something. |
| 1983 | It might also work if you get a newer sx_firmware. Therefore |
| 1984 | this is just a warning. */ |
| 1985 | printk (KERN_WARNING "sx: The SX host doesn't work too well " |
| 1986 | "with the TA8 adapters.\nSpecialix is working on it.\n"); |
| 1987 | } |
| 1988 | #endif |
| 1989 | } |
| 1990 | |
| 1991 | if (chans) { |
| 1992 | /* board->flags |= SX_BOARD_PRESENT; */ |
| 1993 | if(board->irq > 0) { |
| 1994 | /* fixed irq, probably PCI */ |
| 1995 | if(sx_irqmask & (1 << board->irq)) { /* may we use this irq? */ |
| 1996 | if(request_irq(board->irq, sx_interrupt, SA_SHIRQ | SA_INTERRUPT, "sx", board)) { |
| 1997 | printk(KERN_ERR "sx: Cannot allocate irq %d.\n", board->irq); |
| 1998 | board->irq = 0; |
| 1999 | } |
| 2000 | } else |
| 2001 | board->irq = 0; |
| 2002 | } else if(board->irq < 0 && sx_irqmask) { |
| 2003 | /* auto-allocate irq */ |
| 2004 | int irqnr; |
| 2005 | int irqmask = sx_irqmask & (IS_SX_BOARD(board) ? SX_ISA_IRQ_MASK : SI2_ISA_IRQ_MASK); |
| 2006 | for(irqnr = 15; irqnr > 0; irqnr--) |
| 2007 | if(irqmask & (1 << irqnr)) |
| 2008 | if(! request_irq(irqnr, sx_interrupt, SA_SHIRQ | SA_INTERRUPT, "sx", board)) |
| 2009 | break; |
| 2010 | if(! irqnr) |
| 2011 | printk(KERN_ERR "sx: Cannot allocate IRQ.\n"); |
| 2012 | board->irq = irqnr; |
| 2013 | } else |
| 2014 | board->irq = 0; |
| 2015 | |
| 2016 | if (board->irq) { |
| 2017 | /* Found a valid interrupt, start up interrupts! */ |
| 2018 | sx_dprintk (SX_DEBUG_INIT, "Using irq %d.\n", board->irq); |
| 2019 | sx_start_interrupts (board); |
| 2020 | board->poll = sx_slowpoll; |
| 2021 | board->flags |= SX_IRQ_ALLOCATED; |
| 2022 | } else { |
| 2023 | /* no irq: setup board for polled operation */ |
| 2024 | board->poll = sx_poll; |
| 2025 | sx_dprintk (SX_DEBUG_INIT, "Using poll-interval %d.\n", board->poll); |
| 2026 | } |
| 2027 | |
| 2028 | /* The timer should be initialized anyway: That way we can safely |
| 2029 | del_timer it when the module is unloaded. */ |
| 2030 | init_timer (&board->timer); |
| 2031 | |
| 2032 | if (board->poll) { |
| 2033 | board->timer.data = (unsigned long) board; |
| 2034 | board->timer.function = sx_pollfunc; |
| 2035 | board->timer.expires = jiffies + board->poll; |
| 2036 | add_timer (&board->timer); |
| 2037 | } |
| 2038 | } else { |
| 2039 | board->irq = 0; |
| 2040 | } |
| 2041 | |
| 2042 | board->nports = chans; |
| 2043 | sx_dprintk (SX_DEBUG_INIT, "returning %d ports.", board->nports); |
| 2044 | |
| 2045 | func_exit(); |
| 2046 | return chans; |
| 2047 | } |
| 2048 | |
| 2049 | |
| 2050 | static void printheader(void) |
| 2051 | { |
| 2052 | static int header_printed; |
| 2053 | |
| 2054 | if (!header_printed) { |
| 2055 | printk (KERN_INFO "Specialix SX driver " |
| 2056 | "(C) 1998/1999 R.E.Wolff@BitWizard.nl \n"); |
| 2057 | printk (KERN_INFO "sx: version %s\n", RCS_ID); |
| 2058 | header_printed = 1; |
| 2059 | } |
| 2060 | } |
| 2061 | |
| 2062 | |
| 2063 | static int probe_sx (struct sx_board *board) |
| 2064 | { |
| 2065 | struct vpd_prom vpdp; |
| 2066 | char *p; |
| 2067 | int i; |
| 2068 | |
| 2069 | func_enter(); |
| 2070 | |
| 2071 | if (!IS_CF_BOARD (board)) { |
| 2072 | sx_dprintk (SX_DEBUG_PROBE, "Going to verify vpd prom at %p.\n", |
| 2073 | board->base + SX_VPD_ROM); |
| 2074 | |
| 2075 | if (sx_debug & SX_DEBUG_PROBE) |
| 2076 | my_hd_io(board->base + SX_VPD_ROM, 0x40); |
| 2077 | |
| 2078 | p = (char *) &vpdp; |
| 2079 | for (i=0;i< sizeof (struct vpd_prom);i++) |
| 2080 | *p++ = read_sx_byte (board, SX_VPD_ROM + i*2); |
| 2081 | |
| 2082 | if (sx_debug & SX_DEBUG_PROBE) |
| 2083 | my_hd (&vpdp, 0x20); |
| 2084 | |
| 2085 | sx_dprintk (SX_DEBUG_PROBE, "checking identifier...\n"); |
| 2086 | |
| 2087 | if (strncmp (vpdp.identifier, SX_VPD_IDENT_STRING, 16) != 0) { |
| 2088 | sx_dprintk (SX_DEBUG_PROBE, "Got non-SX identifier: '%s'\n", |
| 2089 | vpdp.identifier); |
| 2090 | return 0; |
| 2091 | } |
| 2092 | } |
| 2093 | |
| 2094 | printheader (); |
| 2095 | |
| 2096 | if (!IS_CF_BOARD (board)) { |
| 2097 | printk (KERN_DEBUG "sx: Found an SX board at %lx\n", board->hw_base); |
| 2098 | printk (KERN_DEBUG "sx: hw_rev: %d, assembly level: %d, uniq ID:%08x, ", |
| 2099 | vpdp.hwrev, vpdp.hwass, vpdp.uniqid); |
| 2100 | printk ( "Manufactured: %d/%d\n", |
| 2101 | 1970 + vpdp.myear, vpdp.mweek); |
| 2102 | |
| 2103 | |
| 2104 | if ((((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != SX_PCI_UNIQUEID1) && |
| 2105 | (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) != SX_ISA_UNIQUEID1)) { |
| 2106 | /* This might be a bit harsh. This was the primary reason the |
| 2107 | SX/ISA card didn't work at first... */ |
| 2108 | printk (KERN_ERR "sx: Hmm. Not an SX/PCI or SX/ISA card. Sorry: giving up.\n"); |
| 2109 | return (0); |
| 2110 | } |
| 2111 | |
| 2112 | if (((vpdp.uniqid >> 24) & SX_UNIQUEID_MASK) == SX_ISA_UNIQUEID1) { |
| 2113 | if (((unsigned long)board->hw_base) & 0x8000) { |
| 2114 | printk (KERN_WARNING "sx: Warning: There may be hardware problems with the card at %lx.\n", board->hw_base); |
| 2115 | printk (KERN_WARNING "sx: Read sx.txt for more info.\n"); |
| 2116 | } |
| 2117 | } |
| 2118 | } |
| 2119 | |
| 2120 | board->nports = -1; |
| 2121 | |
| 2122 | /* This resets the processor, and keeps it off the bus. */ |
| 2123 | if (!sx_reset (board)) |
| 2124 | return 0; |
| 2125 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); |
| 2126 | |
| 2127 | board->flags |= SX_BOARD_PRESENT; |
| 2128 | |
| 2129 | func_exit(); |
| 2130 | return 1; |
| 2131 | } |
| 2132 | |
| 2133 | |
| 2134 | |
| 2135 | /* Specialix probes for this card at 32k increments from 640k to 16M. |
| 2136 | I consider machines with less than 16M unlikely nowadays, so I'm |
| 2137 | not probing above 1Mb. Also, 0xa0000, 0xb0000, are taken by the VGA |
| 2138 | card. 0xe0000 and 0xf0000 are taken by the BIOS. That only leaves |
| 2139 | 0xc0000, 0xc8000, 0xd0000 and 0xd8000 . */ |
| 2140 | |
| 2141 | static int probe_si (struct sx_board *board) |
| 2142 | { |
| 2143 | int i; |
| 2144 | |
| 2145 | func_enter(); |
| 2146 | sx_dprintk (SX_DEBUG_PROBE, "Going to verify SI signature hw %lx at %p.\n", board->hw_base, |
| 2147 | board->base + SI2_ISA_ID_BASE); |
| 2148 | |
| 2149 | if (sx_debug & SX_DEBUG_PROBE) |
| 2150 | my_hd_io(board->base + SI2_ISA_ID_BASE, 0x8); |
| 2151 | |
| 2152 | if (!IS_EISA_BOARD(board)) { |
| 2153 | if( IS_SI1_BOARD(board) ) |
| 2154 | { |
| 2155 | for (i=0;i<8;i++) { |
| 2156 | write_sx_byte (board, SI2_ISA_ID_BASE+7-i,i); |
| 2157 | |
| 2158 | } |
| 2159 | } |
| 2160 | for (i=0;i<8;i++) { |
| 2161 | if ((read_sx_byte (board, SI2_ISA_ID_BASE+7-i) & 7) != i) { |
| 2162 | func_exit (); |
| 2163 | return 0; |
| 2164 | } |
| 2165 | } |
| 2166 | } |
| 2167 | |
| 2168 | /* Now we're pretty much convinced that there is an SI board here, |
| 2169 | but to prevent trouble, we'd better double check that we don't |
| 2170 | have an SI1 board when we're probing for an SI2 board.... */ |
| 2171 | |
| 2172 | write_sx_byte (board, SI2_ISA_ID_BASE,0x10); |
| 2173 | if ( IS_SI1_BOARD(board)) { |
| 2174 | /* This should be an SI1 board, which has this |
| 2175 | location writable... */ |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2176 | if (read_sx_byte (board, SI2_ISA_ID_BASE) != 0x10) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2177 | func_exit (); |
| 2178 | return 0; |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2179 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2180 | } else { |
| 2181 | /* This should be an SI2 board, which has the bottom |
| 2182 | 3 bits non-writable... */ |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2183 | if (read_sx_byte (board, SI2_ISA_ID_BASE) == 0x10) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2184 | func_exit (); |
| 2185 | return 0; |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2186 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | } |
| 2188 | |
| 2189 | /* Now we're pretty much convinced that there is an SI board here, |
| 2190 | but to prevent trouble, we'd better double check that we don't |
| 2191 | have an SI1 board when we're probing for an SI2 board.... */ |
| 2192 | |
| 2193 | write_sx_byte (board, SI2_ISA_ID_BASE,0x10); |
| 2194 | if ( IS_SI1_BOARD(board)) { |
| 2195 | /* This should be an SI1 board, which has this |
| 2196 | location writable... */ |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2197 | if (read_sx_byte (board, SI2_ISA_ID_BASE) != 0x10) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | func_exit(); |
| 2199 | return 0; |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2200 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2201 | } else { |
| 2202 | /* This should be an SI2 board, which has the bottom |
| 2203 | 3 bits non-writable... */ |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2204 | if (read_sx_byte (board, SI2_ISA_ID_BASE) == 0x10) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2205 | func_exit (); |
| 2206 | return 0; |
Marc Zyngier | 04a3d31 | 2006-02-26 12:02:56 +0100 | [diff] [blame] | 2207 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | } |
| 2209 | |
| 2210 | printheader (); |
| 2211 | |
| 2212 | printk (KERN_DEBUG "sx: Found an SI board at %lx\n", board->hw_base); |
| 2213 | /* Compared to the SX boards, it is a complete guess as to what |
| 2214 | this card is up to... */ |
| 2215 | |
| 2216 | board->nports = -1; |
| 2217 | |
| 2218 | /* This resets the processor, and keeps it off the bus. */ |
| 2219 | if (!sx_reset (board)) |
| 2220 | return 0; |
| 2221 | sx_dprintk (SX_DEBUG_INIT, "reset the board...\n"); |
| 2222 | |
| 2223 | board->flags |= SX_BOARD_PRESENT; |
| 2224 | |
| 2225 | func_exit(); |
| 2226 | return 1; |
| 2227 | } |
| 2228 | |
| 2229 | static struct tty_operations sx_ops = { |
| 2230 | .break_ctl = sx_break, |
| 2231 | .open = sx_open, |
| 2232 | .close = gs_close, |
| 2233 | .write = gs_write, |
| 2234 | .put_char = gs_put_char, |
| 2235 | .flush_chars = gs_flush_chars, |
| 2236 | .write_room = gs_write_room, |
| 2237 | .chars_in_buffer = gs_chars_in_buffer, |
| 2238 | .flush_buffer = gs_flush_buffer, |
| 2239 | .ioctl = sx_ioctl, |
| 2240 | .throttle = sx_throttle, |
| 2241 | .unthrottle = sx_unthrottle, |
| 2242 | .set_termios = gs_set_termios, |
| 2243 | .stop = gs_stop, |
| 2244 | .start = gs_start, |
| 2245 | .hangup = gs_hangup, |
| 2246 | .tiocmget = sx_tiocmget, |
| 2247 | .tiocmset = sx_tiocmset, |
| 2248 | }; |
| 2249 | |
| 2250 | static int sx_init_drivers(void) |
| 2251 | { |
| 2252 | int error; |
| 2253 | |
| 2254 | func_enter(); |
| 2255 | |
| 2256 | sx_driver = alloc_tty_driver(sx_nports); |
| 2257 | if (!sx_driver) |
| 2258 | return 1; |
| 2259 | sx_driver->owner = THIS_MODULE; |
| 2260 | sx_driver->driver_name = "specialix_sx"; |
| 2261 | sx_driver->name = "ttyX"; |
| 2262 | sx_driver->major = SX_NORMAL_MAJOR; |
| 2263 | sx_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 2264 | sx_driver->subtype = SERIAL_TYPE_NORMAL; |
| 2265 | sx_driver->init_termios = tty_std_termios; |
| 2266 | sx_driver->init_termios.c_cflag = |
| 2267 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 2268 | sx_driver->flags = TTY_DRIVER_REAL_RAW; |
| 2269 | tty_set_operations(sx_driver, &sx_ops); |
| 2270 | |
| 2271 | if ((error = tty_register_driver(sx_driver))) { |
| 2272 | put_tty_driver(sx_driver); |
| 2273 | printk(KERN_ERR "sx: Couldn't register sx driver, error = %d\n", |
| 2274 | error); |
| 2275 | return 1; |
| 2276 | } |
| 2277 | func_exit(); |
| 2278 | return 0; |
| 2279 | } |
| 2280 | |
| 2281 | |
| 2282 | static void * ckmalloc (int size) |
| 2283 | { |
| 2284 | void *p; |
| 2285 | |
| 2286 | p = kmalloc(size, GFP_KERNEL); |
| 2287 | if (p) |
| 2288 | memset(p, 0, size); |
| 2289 | return p; |
| 2290 | } |
| 2291 | |
| 2292 | |
| 2293 | static int sx_init_portstructs (int nboards, int nports) |
| 2294 | { |
| 2295 | struct sx_board *board; |
| 2296 | struct sx_port *port; |
| 2297 | int i, j; |
| 2298 | int addr, chans; |
| 2299 | int portno; |
| 2300 | |
| 2301 | func_enter(); |
| 2302 | |
| 2303 | /* Many drivers statically allocate the maximum number of ports |
| 2304 | There is no reason not to allocate them dynamically. Is there? -- REW */ |
| 2305 | sx_ports = ckmalloc(nports * sizeof (struct sx_port)); |
| 2306 | if (!sx_ports) |
| 2307 | return -ENOMEM; |
| 2308 | |
| 2309 | port = sx_ports; |
| 2310 | for (i = 0; i < nboards; i++) { |
| 2311 | board = &boards[i]; |
| 2312 | board->ports = port; |
| 2313 | for (j=0; j < boards[i].nports;j++) { |
| 2314 | sx_dprintk (SX_DEBUG_INIT, "initing port %d\n", j); |
| 2315 | port->gs.magic = SX_MAGIC; |
| 2316 | port->gs.close_delay = HZ/2; |
| 2317 | port->gs.closing_wait = 30 * HZ; |
| 2318 | port->board = board; |
| 2319 | port->gs.rd = &sx_real_driver; |
| 2320 | #ifdef NEW_WRITE_LOCKING |
| 2321 | port->gs.port_write_sem = MUTEX; |
| 2322 | #endif |
| 2323 | port->gs.driver_lock = SPIN_LOCK_UNLOCKED; |
| 2324 | /* |
| 2325 | * Initializing wait queue |
| 2326 | */ |
| 2327 | init_waitqueue_head(&port->gs.open_wait); |
| 2328 | init_waitqueue_head(&port->gs.close_wait); |
| 2329 | |
| 2330 | port++; |
| 2331 | } |
| 2332 | } |
| 2333 | |
| 2334 | port = sx_ports; |
| 2335 | portno = 0; |
| 2336 | for (i = 0; i < nboards; i++) { |
| 2337 | board = &boards[i]; |
| 2338 | board->port_base = portno; |
| 2339 | /* Possibly the configuration was rejected. */ |
| 2340 | sx_dprintk (SX_DEBUG_PROBE, "Board has %d channels\n", board->nports); |
| 2341 | if (board->nports <= 0) continue; |
| 2342 | /* XXX byteorder ?? */ |
| 2343 | for (addr = 0x80;addr != 0;addr = read_sx_word (board, addr) & 0x7fff) { |
| 2344 | chans = sx_read_module_byte (board, addr, mc_type); |
| 2345 | sx_dprintk (SX_DEBUG_PROBE, "Module at %x: %d channels\n", addr, chans); |
| 2346 | sx_dprintk (SX_DEBUG_PROBE, "Port at"); |
| 2347 | for (j=0;j<chans;j++) { |
| 2348 | /* The "sx-way" is the way it SHOULD be done. That way in the |
| 2349 | future, the firmware may for example pack the structures a bit |
| 2350 | more efficient. Neil tells me it isn't going to happen anytime |
| 2351 | soon though. */ |
| 2352 | if (IS_SX_BOARD(board)) |
| 2353 | port->ch_base = sx_read_module_word (board, addr+j*2, mc_chan_pointer); |
| 2354 | else |
| 2355 | port->ch_base = addr + 0x100 + 0x300*j; |
| 2356 | |
| 2357 | sx_dprintk (SX_DEBUG_PROBE, " %x", port->ch_base); |
| 2358 | port->line = portno++; |
| 2359 | port++; |
| 2360 | } |
| 2361 | sx_dprintk (SX_DEBUG_PROBE, "\n"); |
| 2362 | } |
| 2363 | /* This has to be done earlier. */ |
| 2364 | /* board->flags |= SX_BOARD_INITIALIZED; */ |
| 2365 | } |
| 2366 | |
| 2367 | func_exit(); |
| 2368 | return 0; |
| 2369 | } |
| 2370 | |
| 2371 | static void __exit sx_release_drivers(void) |
| 2372 | { |
| 2373 | func_enter(); |
| 2374 | tty_unregister_driver(sx_driver); |
| 2375 | put_tty_driver(sx_driver); |
| 2376 | func_exit(); |
| 2377 | } |
| 2378 | |
| 2379 | #ifdef CONFIG_PCI |
| 2380 | /******************************************************** |
| 2381 | * Setting bit 17 in the CNTRL register of the PLX 9050 * |
| 2382 | * chip forces a retry on writes while a read is pending.* |
| 2383 | * This is to prevent the card locking up on Intel Xeon * |
| 2384 | * multiprocessor systems with the NX chipset. -- NV * |
| 2385 | ********************************************************/ |
| 2386 | |
| 2387 | /* Newer cards are produced with this bit set from the configuration |
| 2388 | EEprom. As the bit is read/write for the CPU, we can fix it here, |
| 2389 | if we detect that it isn't set correctly. -- REW */ |
| 2390 | |
| 2391 | static void fix_sx_pci (struct pci_dev *pdev, struct sx_board *board) |
| 2392 | { |
| 2393 | unsigned int hwbase; |
| 2394 | void __iomem *rebase; |
| 2395 | unsigned int t; |
| 2396 | |
| 2397 | #define CNTRL_REG_OFFSET 0x50 |
| 2398 | #define CNTRL_REG_GOODVALUE 0x18260000 |
| 2399 | |
| 2400 | pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase); |
| 2401 | hwbase &= PCI_BASE_ADDRESS_MEM_MASK; |
| 2402 | rebase = ioremap(hwbase, 0x80); |
| 2403 | t = readl (rebase + CNTRL_REG_OFFSET); |
| 2404 | if (t != CNTRL_REG_GOODVALUE) { |
| 2405 | printk (KERN_DEBUG "sx: performing cntrl reg fix: %08x -> %08x\n", t, CNTRL_REG_GOODVALUE); |
| 2406 | writel (CNTRL_REG_GOODVALUE, rebase + CNTRL_REG_OFFSET); |
| 2407 | } |
| 2408 | iounmap(rebase); |
| 2409 | } |
| 2410 | #endif |
| 2411 | |
| 2412 | |
| 2413 | static int __init sx_init(void) |
| 2414 | { |
| 2415 | int i; |
| 2416 | int found = 0; |
| 2417 | int eisa_slot; |
| 2418 | struct sx_board *board; |
| 2419 | |
| 2420 | #ifdef CONFIG_PCI |
| 2421 | struct pci_dev *pdev = NULL; |
| 2422 | unsigned int tint; |
| 2423 | unsigned short tshort; |
| 2424 | #endif |
| 2425 | |
| 2426 | func_enter(); |
| 2427 | sx_dprintk (SX_DEBUG_INIT, "Initing sx module... (sx_debug=%d)\n", sx_debug); |
| 2428 | if (abs ((long) (&sx_debug) - sx_debug) < 0x10000) { |
| 2429 | printk (KERN_WARNING "sx: sx_debug is an address, instead of a value. " |
| 2430 | "Assuming -1.\n"); |
| 2431 | printk ("(%p)\n", &sx_debug); |
| 2432 | sx_debug=-1; |
| 2433 | } |
| 2434 | |
| 2435 | if (misc_register(&sx_fw_device) < 0) { |
| 2436 | printk(KERN_ERR "SX: Unable to register firmware loader driver.\n"); |
| 2437 | return -EIO; |
| 2438 | } |
| 2439 | |
| 2440 | #ifdef CONFIG_PCI |
| 2441 | while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, |
| 2442 | PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, |
| 2443 | pdev))) { |
| 2444 | if (pci_enable_device(pdev)) |
| 2445 | continue; |
| 2446 | |
| 2447 | /* Specialix has a whole bunch of cards with |
| 2448 | 0x2000 as the device ID. They say its because |
| 2449 | the standard requires it. Stupid standard. */ |
| 2450 | /* It seems that reading a word doesn't work reliably on 2.0. |
| 2451 | Also, reading a non-aligned dword doesn't work. So we read the |
| 2452 | whole dword at 0x2c and extract the word at 0x2e (SUBSYSTEM_ID) |
| 2453 | ourselves */ |
| 2454 | /* I don't know why the define doesn't work, constant 0x2c does --REW */ |
| 2455 | pci_read_config_dword (pdev, 0x2c, &tint); |
| 2456 | tshort = (tint >> 16) & 0xffff; |
| 2457 | sx_dprintk (SX_DEBUG_PROBE, "Got a specialix card: %x.\n", tint); |
| 2458 | /* sx_dprintk (SX_DEBUG_PROBE, "pdev = %d/%d (%x)\n", pdev, tint); */ |
| 2459 | if ((tshort != 0x0200) && (tshort != 0x0300)) { |
| 2460 | sx_dprintk (SX_DEBUG_PROBE, "But it's not an SX card (%d)...\n", |
| 2461 | tshort); |
| 2462 | continue; |
| 2463 | } |
| 2464 | board = &boards[found]; |
| 2465 | |
| 2466 | board->flags &= ~SX_BOARD_TYPE; |
| 2467 | board->flags |= (tshort == 0x200)?SX_PCI_BOARD: |
| 2468 | SX_CFPCI_BOARD; |
| 2469 | |
| 2470 | /* CF boards use base address 3.... */ |
| 2471 | if (IS_CF_BOARD (board)) |
| 2472 | board->hw_base = pci_resource_start (pdev, 3); |
| 2473 | else |
| 2474 | board->hw_base = pci_resource_start (pdev, 2); |
| 2475 | board->base2 = |
| 2476 | board->base = ioremap(board->hw_base, WINDOW_LEN (board)); |
| 2477 | if (!board->base) { |
| 2478 | printk(KERN_ERR "ioremap failed\n"); |
| 2479 | /* XXX handle error */ |
| 2480 | } |
| 2481 | |
| 2482 | /* Most of the stuff on the CF board is offset by |
| 2483 | 0x18000 .... */ |
| 2484 | if (IS_CF_BOARD (board)) board->base += 0x18000; |
| 2485 | |
| 2486 | board->irq = pdev->irq; |
| 2487 | |
| 2488 | sx_dprintk (SX_DEBUG_PROBE, "Got a specialix card: %x/%p(%d) %x.\n", |
| 2489 | tint, boards[found].base, board->irq, board->flags); |
| 2490 | |
| 2491 | if (probe_sx (board)) { |
| 2492 | found++; |
| 2493 | fix_sx_pci (pdev, board); |
| 2494 | } else |
| 2495 | iounmap(board->base2); |
| 2496 | } |
| 2497 | #endif |
| 2498 | |
| 2499 | for (i=0;i<NR_SX_ADDRS;i++) { |
| 2500 | board = &boards[found]; |
| 2501 | board->hw_base = sx_probe_addrs[i]; |
| 2502 | board->base2 = |
| 2503 | board->base = ioremap(board->hw_base, SX_WINDOW_LEN); |
| 2504 | board->flags &= ~SX_BOARD_TYPE; |
| 2505 | board->flags |= SX_ISA_BOARD; |
| 2506 | board->irq = sx_irqmask?-1:0; |
| 2507 | |
| 2508 | if (probe_sx (board)) { |
| 2509 | found++; |
| 2510 | } else { |
| 2511 | iounmap(board->base); |
| 2512 | } |
| 2513 | } |
| 2514 | |
| 2515 | for (i=0;i<NR_SI_ADDRS;i++) { |
| 2516 | board = &boards[found]; |
| 2517 | board->hw_base = si_probe_addrs[i]; |
| 2518 | board->base2 = |
| 2519 | board->base = ioremap(board->hw_base, SI2_ISA_WINDOW_LEN); |
| 2520 | board->flags &= ~SX_BOARD_TYPE; |
| 2521 | board->flags |= SI_ISA_BOARD; |
| 2522 | board->irq = sx_irqmask ?-1:0; |
| 2523 | |
| 2524 | if (probe_si (board)) { |
| 2525 | found++; |
| 2526 | } else { |
| 2527 | iounmap (board->base); |
| 2528 | } |
| 2529 | } |
| 2530 | for (i=0;i<NR_SI1_ADDRS;i++) { |
| 2531 | board = &boards[found]; |
| 2532 | board->hw_base = si1_probe_addrs[i]; |
| 2533 | board->base2 = |
| 2534 | board->base = ioremap(board->hw_base, SI1_ISA_WINDOW_LEN); |
| 2535 | board->flags &= ~SX_BOARD_TYPE; |
| 2536 | board->flags |= SI1_ISA_BOARD; |
| 2537 | board->irq = sx_irqmask ?-1:0; |
| 2538 | |
| 2539 | if (probe_si (board)) { |
| 2540 | found++; |
| 2541 | } else { |
| 2542 | iounmap (board->base); |
| 2543 | } |
| 2544 | } |
| 2545 | |
| 2546 | sx_dprintk(SX_DEBUG_PROBE, "Probing for EISA cards\n"); |
| 2547 | for(eisa_slot=0x1000; eisa_slot<0x10000; eisa_slot+=0x1000) |
| 2548 | { |
| 2549 | if((inb(eisa_slot+0xc80)==0x4d) && |
| 2550 | (inb(eisa_slot+0xc81)==0x98)) |
| 2551 | { |
| 2552 | sx_dprintk(SX_DEBUG_PROBE, "%s : Signature found in EISA slot %d, Product %d Rev %d\n", |
| 2553 | "XIO", (eisa_slot>>12), inb(eisa_slot+0xc82), inb(eisa_slot+0xc83)); |
| 2554 | |
| 2555 | board = &boards[found]; |
| 2556 | board->eisa_base = eisa_slot; |
| 2557 | board->flags &= ~SX_BOARD_TYPE; |
| 2558 | board->flags |= SI_EISA_BOARD; |
| 2559 | |
| 2560 | board->hw_base = (((inb(0xc01+eisa_slot) << 8) + inb(0xc00+eisa_slot)) << 16); |
| 2561 | board->base2 = |
| 2562 | board->base = ioremap(board->hw_base, SI2_EISA_WINDOW_LEN); |
| 2563 | |
| 2564 | sx_dprintk(SX_DEBUG_PROBE, "IO hw_base address: %lx\n", board->hw_base); |
| 2565 | sx_dprintk(SX_DEBUG_PROBE, "base: %p\n", board->base); |
| 2566 | board->irq = inb(board->eisa_base+0xc02)>>4; |
| 2567 | sx_dprintk(SX_DEBUG_PROBE, "IRQ: %d\n", board->irq); |
| 2568 | |
| 2569 | probe_si(board); |
| 2570 | |
| 2571 | found++; |
| 2572 | } |
| 2573 | } |
| 2574 | if (found) { |
| 2575 | printk (KERN_INFO "sx: total of %d boards detected.\n", found); |
| 2576 | } else { |
| 2577 | misc_deregister(&sx_fw_device); |
| 2578 | } |
| 2579 | |
| 2580 | func_exit(); |
| 2581 | return found?0:-EIO; |
| 2582 | } |
| 2583 | |
| 2584 | |
| 2585 | static void __exit sx_exit (void) |
| 2586 | { |
| 2587 | int i; |
| 2588 | struct sx_board *board; |
| 2589 | |
| 2590 | func_enter(); |
| 2591 | for (i = 0; i < SX_NBOARDS; i++) { |
| 2592 | board = &boards[i]; |
| 2593 | if (board->flags & SX_BOARD_INITIALIZED) { |
| 2594 | sx_dprintk (SX_DEBUG_CLEANUP, "Cleaning up board at %p\n", board->base); |
| 2595 | /* The board should stop messing with us. |
| 2596 | (actually I mean the interrupt) */ |
| 2597 | sx_reset (board); |
| 2598 | if ((board->irq) && (board->flags & SX_IRQ_ALLOCATED)) |
| 2599 | free_irq (board->irq, board); |
| 2600 | |
| 2601 | /* It is safe/allowed to del_timer a non-active timer */ |
| 2602 | del_timer (& board->timer); |
| 2603 | iounmap(board->base); |
| 2604 | } |
| 2605 | } |
| 2606 | if (misc_deregister(&sx_fw_device) < 0) { |
| 2607 | printk (KERN_INFO "sx: couldn't deregister firmware loader devic\n"); |
| 2608 | } |
| 2609 | sx_dprintk (SX_DEBUG_CLEANUP, "Cleaning up drivers (%d)\n", sx_initialized); |
| 2610 | if (sx_initialized) |
| 2611 | sx_release_drivers (); |
| 2612 | |
| 2613 | kfree (sx_ports); |
| 2614 | func_exit(); |
| 2615 | } |
| 2616 | |
| 2617 | module_init(sx_init); |
| 2618 | module_exit(sx_exit); |
| 2619 | |
| 2620 | |