Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #undef BLOCKMOVE |
| 2 | #define Z_WAKE |
| 3 | #undef Z_EXT_CHARS_IN_BUFFER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | |
| 5 | /* |
| 6 | * linux/drivers/char/cyclades.c |
| 7 | * |
| 8 | * This file contains the driver for the Cyclades async multiport |
| 9 | * serial boards. |
| 10 | * |
| 11 | * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. |
| 12 | * Modified and maintained by Marcio Saito <marcio@cyclades.com>. |
| 13 | * Currently maintained by Cyclades team <async@cyclades.com>. |
| 14 | * |
| 15 | * For Technical support and installation problems, please send e-mail |
| 16 | * to support@cyclades.com. |
| 17 | * |
| 18 | * Much of the design and some of the code came from serial.c |
| 19 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was |
| 20 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, |
| 21 | * and then fixed as suggested by Michael K. Johnson 12/12/92. |
| 22 | * |
| 23 | * This version supports shared IRQ's (only for PCI boards). |
| 24 | * |
| 25 | * $Log: cyclades.c,v $ |
| 26 | * Prevent users from opening non-existing Z ports. |
| 27 | * |
| 28 | * Revision 2.3.2.8 2000/07/06 18:14:16 ivan |
| 29 | * Fixed the PCI detection function to work properly on Alpha systems. |
| 30 | * Implemented support for TIOCSERGETLSR ioctl. |
| 31 | * Implemented full support for non-standard baud rates. |
| 32 | * |
| 33 | * Revision 2.3.2.7 2000/06/01 18:26:34 ivan |
| 34 | * Request PLX I/O region, although driver doesn't use it, to avoid |
| 35 | * problems with other drivers accessing it. |
| 36 | * Removed count for on-board buffer characters in cy_chars_in_buffer |
| 37 | * (Cyclades-Z only). |
| 38 | * |
| 39 | * Revision 2.3.2.6 2000/05/05 13:56:05 ivan |
| 40 | * Driver now reports physical instead of virtual memory addresses. |
| 41 | * Masks were added to some Cyclades-Z read accesses. |
| 42 | * Implemented workaround for PLX9050 bug that would cause a system lockup |
| 43 | * in certain systems, depending on the MMIO addresses allocated to the |
| 44 | * board. |
| 45 | * Changed the Tx interrupt programming in the CD1400 chips to boost up |
| 46 | * performance (Cyclom-Y only). |
| 47 | * Code is now compliant with the new module interface (module_[init|exit]). |
| 48 | * Make use of the PCI helper functions to access PCI resources. |
| 49 | * Did some code "housekeeping". |
| 50 | * |
| 51 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan |
| 52 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. |
| 53 | * |
| 54 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan |
| 55 | * Fixed SMP locking in Cyclom-Y interrupt handler. |
| 56 | * |
| 57 | * Revision 2.3.2.3 1999/12/28 12:11:39 ivan |
| 58 | * Added a new cyclades_card field called nports to allow the driver to |
| 59 | * know the exact number of ports found by the Z firmware after its load; |
| 60 | * RX buffer contention prevention logic on interrupt op mode revisited |
| 61 | * (Cyclades-Z only); |
| 62 | * Revisited printk's for Z debug; |
| 63 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; |
| 64 | * |
| 65 | * Revision 2.3.2.2 1999/10/01 11:27:43 ivan |
| 66 | * Fixed bug in cyz_poll that would make all ports but port 0 |
| 67 | * unable to transmit/receive data (Cyclades-Z only); |
| 68 | * Implemented logic to prevent the RX buffer from being stuck with data |
| 69 | * due to a driver / firmware race condition in interrupt op mode |
| 70 | * (Cyclades-Z only); |
| 71 | * Fixed bug in block_til_ready logic that would lead to a system crash; |
| 72 | * Revisited cy_close spinlock usage; |
| 73 | * |
| 74 | * Revision 2.3.2.1 1999/09/28 11:01:22 ivan |
| 75 | * Revisited CONFIG_PCI conditional compilation for PCI board support; |
| 76 | * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; |
| 77 | * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; |
| 78 | * Removed CTS handling from the driver -- this is now completely handled |
| 79 | * by the firmware (Cyclades-Z only); |
| 80 | * Flush RX on-board buffers on a port open (Cyclades-Z only); |
| 81 | * Fixed handling of ASYNC_SPD_* TTY flags; |
| 82 | * Module unload now unmaps all memory area allocated by ioremap; |
| 83 | * |
| 84 | * Revision 2.3.1.1 1999/07/15 16:45:53 ivan |
| 85 | * Removed CY_PROC conditional compilation; |
| 86 | * Implemented SMP-awareness for the driver; |
| 87 | * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] |
| 88 | * functions; |
| 89 | * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs |
| 90 | * (irq=NN) as parameters (only for ISA boards); |
| 91 | * Fixed bug in set_line_char that would prevent the Cyclades-Z |
| 92 | * ports from being configured at speeds above 115.2Kbps; |
| 93 | * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control |
| 94 | * switching from working properly; |
| 95 | * The driver now only prints IRQ info for the Cyclades-Z if it's |
| 96 | * configured to work in interrupt mode; |
| 97 | * |
| 98 | * Revision 2.2.2.3 1999/06/28 11:13:29 ivan |
| 99 | * Added support for interrupt mode operation for the Z cards; |
| 100 | * Removed the driver inactivity control for the Z; |
| 101 | * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when |
| 102 | * the Z firmware is not loaded yet; |
| 103 | * Replaced the "manual" Z Tx flush buffer by a call to a FW command of |
| 104 | * same functionality; |
| 105 | * Implemented workaround for IRQ setting loss on the PCI configuration |
| 106 | * registers after a PCI bridge EEPROM reload (affects PLX9060 only); |
| 107 | * |
| 108 | * Revision 2.2.2.2 1999/05/14 17:18:15 ivan |
| 109 | * /proc entry location changed to /proc/tty/driver/cyclades; |
| 110 | * Added support to shared IRQ's (only for PCI boards); |
| 111 | * Added support for Cobalt Qube2 systems; |
| 112 | * IRQ [de]allocation scheme revisited; |
| 113 | * BREAK implementation changed in order to make use of the 'break_ctl' |
| 114 | * TTY facility; |
| 115 | * Fixed typo in TTY structure field 'driver_name'; |
| 116 | * Included a PCI bridge reset and EEPROM reload in the board |
| 117 | * initialization code (for both Y and Z series). |
| 118 | * |
| 119 | * Revision 2.2.2.1 1999/04/08 16:17:43 ivan |
| 120 | * Fixed a bug in cy_wait_until_sent that was preventing the port to be |
| 121 | * closed properly after a SIGINT; |
| 122 | * Module usage counter scheme revisited; |
| 123 | * Added support to the upcoming Y PCI boards (i.e., support to additional |
| 124 | * PCI Device ID's). |
| 125 | * |
| 126 | * Revision 2.2.1.10 1999/01/20 16:14:29 ivan |
| 127 | * Removed all unnecessary page-alignement operations in ioremap calls |
| 128 | * (ioremap is currently safe for these operations). |
| 129 | * |
| 130 | * Revision 2.2.1.9 1998/12/30 18:18:30 ivan |
| 131 | * Changed access to PLX PCI bridge registers from I/O to MMIO, in |
| 132 | * order to make PLX9050-based boards work with certain motherboards. |
| 133 | * |
| 134 | * Revision 2.2.1.8 1998/11/13 12:46:20 ivan |
| 135 | * cy_close function now resets (correctly) the tty->closing flag; |
| 136 | * JIFFIES_DIFF macro fixed. |
| 137 | * |
| 138 | * Revision 2.2.1.7 1998/09/03 12:07:28 ivan |
| 139 | * Fixed bug in cy_close function, which was not informing HW of |
| 140 | * which port should have the reception disabled before doing so; |
| 141 | * fixed Cyclom-8YoP hardware detection bug. |
| 142 | * |
| 143 | * Revision 2.2.1.6 1998/08/20 17:15:39 ivan |
| 144 | * Fixed bug in cy_close function, which causes malfunction |
| 145 | * of one of the first 4 ports when a higher port is closed |
| 146 | * (Cyclom-Y only). |
| 147 | * |
| 148 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan |
| 149 | * Fixed Cyclom-4Yo hardware detection bug. |
| 150 | * |
| 151 | * Revision 2.2.1.4 1998/08/04 11:02:50 ivan |
| 152 | * /proc/cyclades implementation with great collaboration of |
| 153 | * Marc Lewis <marc@blarg.net>; |
| 154 | * cyy_interrupt was changed to avoid occurrence of kernel oopses |
| 155 | * during PPP operation. |
| 156 | * |
| 157 | * Revision 2.2.1.3 1998/06/01 12:09:10 ivan |
| 158 | * General code review in order to comply with 2.1 kernel standards; |
| 159 | * data loss prevention for slow devices revisited (cy_wait_until_sent |
| 160 | * was created); |
| 161 | * removed conditional compilation for new/old PCI structure support |
| 162 | * (now the driver only supports the new PCI structure). |
| 163 | * |
| 164 | * Revision 2.2.1.1 1998/03/19 16:43:12 ivan |
| 165 | * added conditional compilation for new/old PCI structure support; |
| 166 | * removed kernel series (2.0.x / 2.1.x) conditional compilation. |
| 167 | * |
| 168 | * Revision 2.1.1.3 1998/03/16 18:01:12 ivan |
| 169 | * cleaned up the data loss fix; |
| 170 | * fixed XON/XOFF handling once more (Cyclades-Z); |
| 171 | * general review of the driver routines; |
| 172 | * introduction of a mechanism to prevent data loss with slow |
| 173 | * printers, by forcing a delay before closing the port. |
| 174 | * |
| 175 | * Revision 2.1.1.2 1998/02/17 16:50:00 ivan |
| 176 | * fixed detection/handling of new CD1400 in Ye boards; |
| 177 | * fixed XON/XOFF handling (Cyclades-Z); |
| 178 | * fixed data loss caused by a premature port close; |
| 179 | * introduction of a flag that holds the CD1400 version ID per port |
| 180 | * (used by the CYGETCD1400VER new ioctl). |
| 181 | * |
| 182 | * Revision 2.1.1.1 1997/12/03 17:31:19 ivan |
| 183 | * Code review for the module cleanup routine; |
| 184 | * fixed RTS and DTR status report for new CD1400's in get_modem_info; |
| 185 | * includes anonymous changes regarding signal_pending. |
| 186 | * |
| 187 | * Revision 2.1 1997/11/01 17:42:41 ivan |
| 188 | * Changes in the driver to support Alpha systems (except 8Zo V_1); |
| 189 | * BREAK fix for the Cyclades-Z boards; |
| 190 | * driver inactivity control by FW implemented; |
| 191 | * introduction of flag that allows driver to take advantage of |
| 192 | * a special CD1400 feature related to HW flow control; |
| 193 | * added support for the CD1400 rev. J (Cyclom-Y boards); |
| 194 | * introduction of ioctls to: |
| 195 | * - control the rtsdtr_inv flag (Cyclom-Y); |
| 196 | * - control the rflow flag (Cyclom-Y); |
| 197 | * - adjust the polling interval (Cyclades-Z); |
| 198 | * |
| 199 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan |
| 200 | * Fixes related to kernel version conditional |
| 201 | * compilation. |
| 202 | * |
| 203 | * Revision 1.36.4.32 1997/06/14 19:30:00 ivan |
| 204 | * Compatibility issues between kernels 2.0.x and |
| 205 | * 2.1.x (mainly related to clear_bit function). |
| 206 | * |
| 207 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan |
| 208 | * Changes to define the memory window according to the |
| 209 | * board type. |
| 210 | * |
| 211 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel |
| 212 | * Changes to support new cycladesZ boards. |
| 213 | * |
| 214 | * Revision 1.36.4.29 1997/05/12 11:30:00 daniel |
| 215 | * Merge of Bentson's and Daniel's version 1.36.4.28. |
| 216 | * Corrects bug in cy_detect_pci: check if there are more |
| 217 | * ports than the number of static structs allocated. |
| 218 | * Warning message during initialization if this driver is |
| 219 | * used with the new generation of cycladesZ boards. Those |
| 220 | * will be supported only in next release of the driver. |
| 221 | * Corrects bug in cy_detect_pci and cy_detect_isa that |
| 222 | * returned wrong number of VALID boards, when a cyclomY |
| 223 | * was found with no serial modules connected. |
| 224 | * Changes to use current (2.1.x) kernel subroutine names |
| 225 | * and created macros for compilation with 2.0.x kernel, |
| 226 | * instead of the other way around. |
| 227 | * |
| 228 | * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson |
| 229 | * Change queue_task_irq_off to queue_task_irq. |
| 230 | * The inline function queue_task_irq_off (tqueue.h) |
| 231 | * was removed from latest releases of 2.1.x kernel. |
| 232 | * Use of macro __init to mark the initialization |
| 233 | * routines, so memory can be reused. |
| 234 | * Also incorporate implementation of critical region |
| 235 | * in function cleanup_module() created by anonymous |
| 236 | * linuxer. |
| 237 | * |
| 238 | * Revision 1.36.4.28 1997/04/25 16:00:00 daniel |
| 239 | * Change to support new firmware that solves DCD problem: |
| 240 | * application could fail to receive SIGHUP signal when DCD |
| 241 | * varying too fast. |
| 242 | * |
| 243 | * Revision 1.36.4.27 1997/03/26 10:30:00 daniel |
| 244 | * Changed for support linux versions 2.1.X. |
| 245 | * Backward compatible with linux versions 2.0.X. |
| 246 | * Corrected illegal use of filler field in |
| 247 | * CH_CTRL struct. |
| 248 | * Deleted some debug messages. |
| 249 | * |
| 250 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel |
| 251 | * Included check for NULL tty pointer in cyz_poll. |
| 252 | * |
| 253 | * Revision 1.36.4.25 1997/02/26 16:28:30 bentson |
| 254 | * Bill Foster at Blarg! Online services noticed that |
| 255 | * some of the switch elements of -Z modem control |
| 256 | * lacked a closing "break;" |
| 257 | * |
| 258 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel |
| 259 | * Changed low water threshold for buffer xmit_buf |
| 260 | * |
| 261 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson |
| 262 | * Marcio provided fix to modem status fetch for -Z |
| 263 | * |
| 264 | * Revision 1.36.4.22 1996/10/28 22:41:17 bentson |
| 265 | * improve mapping of -Z control page (thanks to Steve |
| 266 | * Price <stevep@fa.tdktca.com> for help on this) |
| 267 | * |
| 268 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson |
| 269 | * shift from CPU-bound to memcopy in cyz_polling operation |
| 270 | * |
| 271 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson |
| 272 | * Added support to set and report higher speeds. |
| 273 | * |
| 274 | * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito |
| 275 | * Some fixes in the HW flow control for the BETA release. |
| 276 | * Don't try to register the IRQ. |
| 277 | * |
| 278 | * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson |
| 279 | * make sure "cyc" appears in all kernel messages; all soft interrupts |
| 280 | * handled by same routine; recognize out-of-band reception; comment |
| 281 | * out some diagnostic messages; leave RTS/CTS flow control to hardware; |
Jean Delvare | 33430dc | 2005-10-30 15:02:20 -0800 | [diff] [blame] | 282 | * fix race condition in -Z buffer management; only -Y needs to explicitly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | * flush chars; tidy up some startup messages; |
| 284 | * |
| 285 | * Revision 1.36.4.18 1996/07/25 18:57:31 bentson |
| 286 | * shift MOD_INC_USE_COUNT location to match |
| 287 | * serial.c; purge some diagnostic messages; |
| 288 | * |
| 289 | * Revision 1.36.4.17 1996/07/25 18:01:08 bentson |
| 290 | * enable modem status messages and fetch & process them; note |
| 291 | * time of last activity type for each port; set_line_char now |
| 292 | * supports more than line 0 and treats 0 baud correctly; |
| 293 | * get_modem_info senses rs_status; |
| 294 | * |
| 295 | * Revision 1.36.4.16 1996/07/20 08:43:15 bentson |
| 296 | * barely works--now's time to turn on |
| 297 | * more features 'til it breaks |
| 298 | * |
| 299 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson |
| 300 | * check more -Z board status; shorten boot message |
| 301 | * |
| 302 | * Revision 1.36.4.14 1996/07/19 22:20:37 bentson |
| 303 | * fix reference to ch_ctrl in startup; verify return |
| 304 | * values from cyz_issue_cmd and cyz_update_channel; |
| 305 | * more stuff to get modem control correct; |
| 306 | * |
| 307 | * Revision 1.36.4.13 1996/07/11 19:53:33 bentson |
| 308 | * more -Z stuff folded in; re-order changes to put -Z stuff |
| 309 | * after -Y stuff (to make changes clearer) |
| 310 | * |
| 311 | * Revision 1.36.4.12 1996/07/11 15:40:55 bentson |
| 312 | * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. |
| 313 | * Add code to send break. Clear firmware ID word at startup (so |
| 314 | * that other code won't talk to inactive board). |
| 315 | * |
| 316 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson |
| 317 | * add code for -Z in set_line_char |
| 318 | * |
| 319 | * Revision 1.36.4.10 1996/07/08 19:28:37 bentson |
| 320 | * fold more -Z stuff (or in some cases, error messages) |
| 321 | * into driver; add text to "don't know what to do" messages. |
| 322 | * |
| 323 | * Revision 1.36.4.9 1996/07/08 18:38:38 bentson |
| 324 | * moved compile-time flags near top of file; cosmetic changes |
| 325 | * to narrow text (to allow 2-up printing); changed many declarations |
| 326 | * to "static" to limit external symbols; shuffled code order to |
| 327 | * coalesce -Y and -Z specific code, also to put internal functions |
| 328 | * in order of tty_driver structure; added code to recognize -Z |
| 329 | * ports (and for moment, do nothing or report error); add cy_startup |
| 330 | * to parse boot command line for extra base addresses for ISA probes; |
| 331 | * |
| 332 | * Revision 1.36.4.8 1996/06/25 17:40:19 bentson |
| 333 | * reorder some code, fix types of some vars (int vs. long), |
| 334 | * add cy_setup to support user declared ISA addresses |
| 335 | * |
| 336 | * Revision 1.36.4.7 1996/06/21 23:06:18 bentson |
| 337 | * dump ioctl based firmware load (it's now a user level |
| 338 | * program); ensure uninitialzed ports cannot be used |
| 339 | * |
| 340 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson |
| 341 | * rename vars and restructure some code |
| 342 | * |
| 343 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson |
| 344 | * get right status back after boot load |
| 345 | * |
| 346 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson |
| 347 | * successfully loads firmware |
| 348 | * |
| 349 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson |
| 350 | * add more of the code for the boot/load ioctls |
| 351 | * |
| 352 | * Revision 1.36.4.2 1996/06/11 21:00:51 bentson |
| 353 | * start to add Z functionality--starting with ioctl |
| 354 | * for loading firmware |
| 355 | * |
| 356 | * Revision 1.36.4.1 1996/06/10 18:03:02 bentson |
| 357 | * added code to recognize Z/PCI card at initialization; report |
| 358 | * presence, but card is not initialized (because firmware needs |
| 359 | * to be loaded) |
| 360 | * |
| 361 | * Revision 1.36.3.8 1996/06/07 16:29:00 bentson |
| 362 | * starting minor number at zero; added missing verify_area |
| 363 | * as noted by Heiko Eissfeldt <heiko@colossus.escape.de> |
| 364 | * |
| 365 | * Revision 1.36.3.7 1996/04/19 21:06:18 bentson |
| 366 | * remove unneeded boot message & fix CLOCAL hardware flow |
| 367 | * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); |
| 368 | * remove unused diagnostic statements; minor 0 is first; |
| 369 | * |
| 370 | * Revision 1.36.3.6 1996/03/13 13:21:17 marcio |
| 371 | * The kernel function vremap (available only in later 1.3.xx kernels) |
| 372 | * allows the access to memory addresses above the RAM. This revision |
| 373 | * of the driver supports PCI boards below 1Mb (device id 0x100) and |
| 374 | * above 1Mb (device id 0x101). |
| 375 | * |
| 376 | * Revision 1.36.3.5 1996/03/07 15:20:17 bentson |
| 377 | * Some global changes to interrupt handling spilled into |
| 378 | * this driver--mostly unused arguments in system function |
| 379 | * calls. Also added change by Marcio Saito which should |
| 380 | * reduce lost interrupts at startup by fast processors. |
| 381 | * |
| 382 | * Revision 1.36.3.4 1995/11/13 20:45:10 bentson |
| 383 | * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed |
| 384 | * in 1.3.41 kernel to remove a possible race condition, extend |
| 385 | * some error messages, and let the driver run as a loadable module |
| 386 | * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a |
| 387 | * possible race condition. |
| 388 | * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. |
| 389 | * |
| 390 | * Revision 1.36.3.3 1995/11/13 19:44:48 bentson |
| 391 | * Changes by Linus Torvalds in 1.3.33 kernel distribution |
| 392 | * required due to reordering of driver initialization. |
| 393 | * Drivers are now initialized *after* memory management. |
| 394 | * |
| 395 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson |
| 396 | * remove printk from ISR; fix typo |
| 397 | * |
| 398 | * Revision 1.36.3.1 1995/09/01 12:00:42 marcio |
| 399 | * Minor fixes in the PCI board support. PCI function calls in |
| 400 | * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan |
| 401 | * <duncan@okay.com>. "bad serial count" message removed. |
| 402 | * |
| 403 | * Revision 1.36.3 1995/08/22 09:19:42 marcio |
| 404 | * Cyclom-Y/PCI support added. Changes in the cy_init routine and |
| 405 | * board initialization. Changes in the boot messages. The driver |
| 406 | * supports up to 4 boards and 64 ports by default. |
| 407 | * |
| 408 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson |
| 409 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; |
| 410 | * |
| 411 | * Revision 1.36.1.3 1995/03/23 22:15:35 bentson |
| 412 | * add missing break in modem control block in ioctl switch statement |
| 413 | * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); |
| 414 | * |
| 415 | * Revision 1.36.1.2 1995/03/22 19:16:22 bentson |
| 416 | * make sure CTS flow control is set as soon as possible (thanks |
| 417 | * to note from David Lambert <lambert@chesapeake.rps.slb.com>); |
| 418 | * |
| 419 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson |
| 420 | * initialize defaults for receive threshold and stale data timeout; |
| 421 | * cosmetic changes; |
| 422 | * |
| 423 | * Revision 1.36 1995/03/10 23:33:53 bentson |
| 424 | * added support of chips 4-7 in 32 port Cyclom-Ye; |
| 425 | * fix cy_interrupt pointer dereference problem |
| 426 | * (Joe Portman <baron@aa.net>); |
| 427 | * give better error response if open is attempted on non-existent port |
| 428 | * (Zachariah Vaum <jchryslr@netcom.com>); |
| 429 | * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); |
| 430 | * conditional compilation for -16Y on systems with fast, noisy bus; |
| 431 | * comment out diagnostic print function; |
| 432 | * cleaned up table of base addresses; |
| 433 | * set receiver time-out period register to correct value, |
| 434 | * set receive threshold to better default values, |
| 435 | * set chip timer to more accurate 200 Hz ticking, |
| 436 | * add code to monitor and modify receive parameters |
| 437 | * (Rik Faith <faith@cs.unc.edu> Nick Simicich |
| 438 | * <njs@scifi.emi.net>); |
| 439 | * |
| 440 | * Revision 1.35 1994/12/16 13:54:18 steffen |
| 441 | * additional patch by Marcio Saito for board detection |
| 442 | * Accidently left out in 1.34 |
| 443 | * |
| 444 | * Revision 1.34 1994/12/10 12:37:12 steffen |
| 445 | * This is the corrected version as suggested by Marcio Saito |
| 446 | * |
| 447 | * Revision 1.33 1994/12/01 22:41:18 bentson |
| 448 | * add hooks to support more high speeds directly; add tytso |
| 449 | * patch regarding CLOCAL wakeups |
| 450 | * |
| 451 | * Revision 1.32 1994/11/23 19:50:04 bentson |
| 452 | * allow direct kernel control of higher signalling rates; |
| 453 | * look for cards at additional locations |
| 454 | * |
| 455 | * Revision 1.31 1994/11/16 04:33:28 bentson |
| 456 | * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- |
| 457 | * a problem in chars_in_buffer has been resolved by some |
| 458 | * small changes; this should yield smoother output |
| 459 | * |
| 460 | * Revision 1.30 1994/11/16 04:28:05 bentson |
| 461 | * Fix from Corey Minyard, Internet: minyard@metronet.com, |
| 462 | * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to |
| 463 | * cy_hangup that appears to clear up much (all?) of the |
| 464 | * DTR glitches; also he's added/cleaned-up diagnostic messages |
| 465 | * |
| 466 | * Revision 1.29 1994/11/16 04:16:07 bentson |
| 467 | * add change proposed by Ralph Sims, ralphs@halcyon.com, to |
| 468 | * operate higher speeds in same way as other serial ports; |
| 469 | * add more serial ports (for up to two 16-port muxes). |
| 470 | * |
| 471 | * Revision 1.28 1994/11/04 00:13:16 root |
| 472 | * turn off diagnostic messages |
| 473 | * |
| 474 | * Revision 1.27 1994/11/03 23:46:37 root |
| 475 | * bunch of changes to bring driver into greater conformance |
| 476 | * with the serial.c driver (looking for missed fixes) |
| 477 | * |
| 478 | * Revision 1.26 1994/11/03 22:40:36 root |
| 479 | * automatic interrupt probing fixed. |
| 480 | * |
| 481 | * Revision 1.25 1994/11/03 20:17:02 root |
| 482 | * start to implement auto-irq |
| 483 | * |
| 484 | * Revision 1.24 1994/11/03 18:01:55 root |
| 485 | * still working on modem signals--trying not to drop DTR |
| 486 | * during the getty/login processes |
| 487 | * |
| 488 | * Revision 1.23 1994/11/03 17:51:36 root |
| 489 | * extend baud rate support; set receive threshold as function |
| 490 | * of baud rate; fix some problems with RTS/CTS; |
| 491 | * |
| 492 | * Revision 1.22 1994/11/02 18:05:35 root |
| 493 | * changed arguments to udelay to type long to get |
| 494 | * delays to be of correct duration |
| 495 | * |
| 496 | * Revision 1.21 1994/11/02 17:37:30 root |
| 497 | * employ udelay (after calibrating loops_per_second earlier |
| 498 | * in init/main.c) instead of using home-grown delay routines |
| 499 | * |
| 500 | * Revision 1.20 1994/11/02 03:11:38 root |
| 501 | * cy_chars_in_buffer forces a return value of 0 to let |
| 502 | * login work (don't know why it does); some functions |
| 503 | * that were returning EFAULT, now executes the code; |
| 504 | * more work on deciding when to disable xmit interrupts; |
| 505 | * |
| 506 | * Revision 1.19 1994/11/01 20:10:14 root |
| 507 | * define routine to start transmission interrupts (by enabling |
| 508 | * transmit interrupts); directly enable/disable modem interrupts; |
| 509 | * |
| 510 | * Revision 1.18 1994/11/01 18:40:45 bentson |
| 511 | * Don't always enable transmit interrupts in startup; interrupt on |
| 512 | * TxMpty instead of TxRdy to help characters get out before shutdown; |
| 513 | * restructure xmit interrupt to check for chars first and quit if |
| 514 | * none are ready to go; modem status (MXVRx) is upright, _not_ inverted |
| 515 | * (to my view); |
| 516 | * |
| 517 | * Revision 1.17 1994/10/30 04:39:45 bentson |
| 518 | * rename serial_driver and callout_driver to cy_serial_driver and |
| 519 | * cy_callout_driver to avoid linkage interference; initialize |
| 520 | * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port |
| 521 | * from cyclades_port structure; add paranoia check to cy_close; |
| 522 | * |
| 523 | * Revision 1.16 1994/10/30 01:14:33 bentson |
| 524 | * change major numbers; add some _early_ return statements; |
| 525 | * |
| 526 | * Revision 1.15 1994/10/29 06:43:15 bentson |
| 527 | * final tidying up for clean compile; enable some error reporting |
| 528 | * |
| 529 | * Revision 1.14 1994/10/28 20:30:22 Bentson |
| 530 | * lots of changes to drag the driver towards the new tty_io |
| 531 | * structures and operation. not expected to work, but may |
| 532 | * compile cleanly. |
| 533 | * |
| 534 | * Revision 1.13 1994/07/21 23:08:57 Bentson |
| 535 | * add some diagnostic cruft; support 24 lines (for testing |
| 536 | * both -8Y and -16Y cards; be more thorough in servicing all |
| 537 | * chips during interrupt; add "volatile" a few places to |
| 538 | * circumvent compiler optimizations; fix base & offset |
| 539 | * computations in block_til_ready (was causing chip 0 to |
| 540 | * stop operation) |
| 541 | * |
| 542 | * Revision 1.12 1994/07/19 16:42:11 Bentson |
| 543 | * add some hackery for kernel version 1.1.8; expand |
| 544 | * error messages; refine timing for delay loops and |
| 545 | * declare loop params volatile |
| 546 | * |
| 547 | * Revision 1.11 1994/06/11 21:53:10 bentson |
| 548 | * get use of save_car right in transmit interrupt service |
| 549 | * |
| 550 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson |
| 551 | * add some diagnostic printing; try to fix save_car stuff |
| 552 | * |
| 553 | * Revision 1.10 1994/06/11 20:36:08 bentson |
| 554 | * clean up compiler warnings |
| 555 | * |
| 556 | * Revision 1.9 1994/06/11 19:42:46 bentson |
| 557 | * added a bunch of code to support modem signalling |
| 558 | * |
| 559 | * Revision 1.8 1994/06/11 17:57:07 bentson |
| 560 | * recognize break & parity error |
| 561 | * |
| 562 | * Revision 1.7 1994/06/05 05:51:34 bentson |
| 563 | * Reorder baud table to be monotonic; add cli to CP; discard |
| 564 | * incoming characters and status if the line isn't open; start to |
| 565 | * fold code into cy_throttle; start to port get_serial_info, |
| 566 | * set_serial_info, get_modem_info, set_modem_info, and send_break |
| 567 | * from serial.c; expand cy_ioctl; relocate and expand config_setup; |
| 568 | * get flow control characters from tty struct; invalidate ports w/o |
| 569 | * hardware; |
| 570 | * |
| 571 | * Revision 1.6 1994/05/31 18:42:21 bentson |
| 572 | * add a loop-breaker in the interrupt service routine; |
| 573 | * note when port is initialized so that it can be shut |
| 574 | * down under the right conditions; receive works without |
| 575 | * any obvious errors |
| 576 | * |
| 577 | * Revision 1.5 1994/05/30 00:55:02 bentson |
| 578 | * transmit works without obvious errors |
| 579 | * |
| 580 | * Revision 1.4 1994/05/27 18:46:27 bentson |
| 581 | * incorporated more code from lib_y.c; can now print short |
| 582 | * strings under interrupt control to port zero; seems to |
| 583 | * select ports/channels/lines correctly |
| 584 | * |
| 585 | * Revision 1.3 1994/05/25 22:12:44 bentson |
| 586 | * shifting from multi-port on a card to proper multiplexor |
| 587 | * data structures; added skeletons of most routines |
| 588 | * |
| 589 | * Revision 1.2 1994/05/19 13:21:43 bentson |
| 590 | * start to crib from other sources |
| 591 | * |
| 592 | */ |
| 593 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 594 | #define CY_VERSION "2.4" |
| 595 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | /* If you need to install more boards than NR_CARDS, change the constant |
| 597 | in the definition below. No other change is necessary to support up to |
| 598 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ |
| 599 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 600 | #define NR_CARDS 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | |
| 602 | /* |
| 603 | If the total number of ports is larger than NR_PORTS, change this |
| 604 | constant in the definition below. No other change is necessary to |
| 605 | support more boards/ports. */ |
| 606 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 607 | #define NR_PORTS 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
| 609 | #define ZE_V1_NPORTS 64 |
| 610 | #define ZO_V1 0 |
| 611 | #define ZO_V2 1 |
| 612 | #define ZE_V1 2 |
| 613 | |
| 614 | #define SERIAL_PARANOIA_CHECK |
| 615 | #undef CY_DEBUG_OPEN |
| 616 | #undef CY_DEBUG_THROTTLE |
| 617 | #undef CY_DEBUG_OTHER |
| 618 | #undef CY_DEBUG_IO |
| 619 | #undef CY_DEBUG_COUNT |
| 620 | #undef CY_DEBUG_DTR |
| 621 | #undef CY_DEBUG_WAIT_UNTIL_SENT |
| 622 | #undef CY_DEBUG_INTERRUPTS |
| 623 | #undef CY_16Y_HACK |
| 624 | #undef CY_ENABLE_MONITORING |
| 625 | #undef CY_PCI_DEBUG |
| 626 | |
| 627 | #if 0 |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 628 | #define PAUSE __asm__("nop") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | #else |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 630 | #define PAUSE do {} while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | #endif |
| 632 | |
| 633 | /* |
| 634 | * Include section |
| 635 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | #include <linux/module.h> |
| 637 | #include <linux/errno.h> |
| 638 | #include <linux/signal.h> |
| 639 | #include <linux/sched.h> |
| 640 | #include <linux/timer.h> |
| 641 | #include <linux/interrupt.h> |
| 642 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 643 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | #include <linux/serial.h> |
| 645 | #include <linux/major.h> |
| 646 | #include <linux/string.h> |
| 647 | #include <linux/fcntl.h> |
| 648 | #include <linux/ptrace.h> |
| 649 | #include <linux/cyclades.h> |
| 650 | #include <linux/mm.h> |
| 651 | #include <linux/ioport.h> |
| 652 | #include <linux/init.h> |
| 653 | #include <linux/delay.h> |
| 654 | #include <linux/spinlock.h> |
| 655 | #include <linux/bitops.h> |
| 656 | |
| 657 | #include <asm/system.h> |
| 658 | #include <asm/io.h> |
| 659 | #include <asm/irq.h> |
| 660 | #include <asm/uaccess.h> |
| 661 | |
| 662 | #define CY_LOCK(info,flags) \ |
| 663 | do { \ |
| 664 | spin_lock_irqsave(&cy_card[info->card].card_lock, flags); \ |
| 665 | } while (0) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | #define CY_UNLOCK(info,flags) \ |
| 668 | do { \ |
| 669 | spin_unlock_irqrestore(&cy_card[info->card].card_lock, flags); \ |
| 670 | } while (0) |
| 671 | |
| 672 | #include <linux/types.h> |
| 673 | #include <linux/kernel.h> |
| 674 | #include <linux/pci.h> |
| 675 | |
| 676 | #include <linux/stat.h> |
| 677 | #include <linux/proc_fs.h> |
| 678 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 679 | static void cy_throttle(struct tty_struct *tty); |
| 680 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | |
| 682 | #define IS_CYC_Z(card) ((card).num_chips == -1) |
| 683 | |
| 684 | #define Z_FPGA_CHECK(card) \ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 685 | ((cy_readl(&((struct RUNTIME_9060 __iomem *) \ |
| 686 | ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | |
| 688 | #define ISZLOADED(card) (((ZO_V1==cy_readl(&((struct RUNTIME_9060 __iomem *) \ |
| 689 | ((card).ctl_addr))->mail_box_0)) || \ |
| 690 | Z_FPGA_CHECK(card)) && \ |
| 691 | (ZFIRM_ID==cy_readl(&((struct FIRM_ID __iomem *) \ |
| 692 | ((card).base_addr+ID_ADDRESS))->signature))) |
| 693 | |
| 694 | #ifndef SERIAL_XMIT_SIZE |
| 695 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) |
| 696 | #endif |
| 697 | #define WAKEUP_CHARS 256 |
| 698 | |
| 699 | #define STD_COM_FLAGS (0) |
| 700 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | static struct tty_driver *cy_serial_driver; |
| 702 | |
| 703 | #ifdef CONFIG_ISA |
| 704 | /* This is the address lookup table. The driver will probe for |
| 705 | Cyclom-Y/ISA boards at all addresses in here. If you want the |
| 706 | driver to probe addresses at a different address, add it to |
| 707 | this table. If the driver is probing some other board and |
| 708 | causing problems, remove the offending address from this table. |
| 709 | The cy_setup function extracts additional addresses from the |
| 710 | boot options line. The form is "cyclades=address,address..." |
| 711 | */ |
| 712 | |
| 713 | static unsigned int cy_isa_addresses[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 714 | 0xD0000, |
| 715 | 0xD2000, |
| 716 | 0xD4000, |
| 717 | 0xD6000, |
| 718 | 0xD8000, |
| 719 | 0xDA000, |
| 720 | 0xDC000, |
| 721 | 0xDE000, |
| 722 | 0, 0, 0, 0, 0, 0, 0, 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | }; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 724 | |
Tobias Klauser | fe97107 | 2006-01-09 20:54:02 -0800 | [diff] [blame] | 725 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
| 727 | #ifdef MODULE |
| 728 | static long maddr[NR_CARDS] = { 0, }; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 729 | static int irq[NR_CARDS] = { 0, }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | |
| 731 | module_param_array(maddr, long, NULL, 0); |
| 732 | module_param_array(irq, int, NULL, 0); |
| 733 | #endif |
| 734 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 735 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
| 737 | /* This is the per-card data structure containing address, irq, number of |
| 738 | channels, etc. This driver supports a maximum of NR_CARDS cards. |
| 739 | */ |
| 740 | static struct cyclades_card cy_card[NR_CARDS]; |
| 741 | |
| 742 | /* This is the per-channel data structure containing pointers, flags |
| 743 | and variables for the port. This driver supports a maximum of NR_PORTS. |
| 744 | */ |
| 745 | static struct cyclades_port cy_port[NR_PORTS]; |
| 746 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 747 | static int cy_next_channel; /* next minor available */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | |
| 749 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | * This is used to look up the divisor speeds and the timeouts |
| 751 | * We're normally limited to 15 distinct baud rates. The extra |
| 752 | * are accessed via settings in info->flags. |
| 753 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
| 754 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, |
| 755 | * HI VHI |
| 756 | * 20 |
| 757 | */ |
| 758 | static int baud_table[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 759 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
| 760 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, |
| 761 | 230400, 0 |
| 762 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 764 | static char baud_co_25[] = { /* 25 MHz clock option table */ |
| 765 | /* value => 00 01 02 03 04 */ |
| 766 | /* divide by 8 32 128 512 2048 */ |
| 767 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, |
| 768 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| 769 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 771 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
| 772 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
| 773 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 |
| 774 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 776 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
| 777 | /* value => 00 01 02 03 04 */ |
| 778 | /* divide by 8 32 128 512 2048 */ |
| 779 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, |
| 780 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 781 | 0x00 |
| 782 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 784 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
| 785 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
| 786 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, |
| 787 | 0x21 |
| 788 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 789 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 790 | static char baud_cor3[] = { /* receive threshold */ |
| 791 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 792 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, |
| 793 | 0x07 |
| 794 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
| 796 | /* |
| 797 | * The Cyclades driver implements HW flow control as any serial driver. |
| 798 | * The cyclades_port structure member rflow and the vector rflow_thr |
| 799 | * allows us to take advantage of a special feature in the CD1400 to avoid |
| 800 | * data loss even when the system interrupt latency is too high. These flags |
| 801 | * are to be used only with very special applications. Setting these flags |
| 802 | * requires the use of a special cable (DTR and RTS reversed). In the new |
| 803 | * CD1400-based boards (rev. 6.00 or later), there is no need for special |
| 804 | * cables. |
| 805 | */ |
| 806 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 807 | static char rflow_thr[] = { /* rflow threshold */ |
| 808 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 809 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 810 | 0x0a |
| 811 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | |
| 813 | /* The Cyclom-Ye has placed the sequential chips in non-sequential |
| 814 | * address order. This look-up table overcomes that problem. |
| 815 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 816 | static int cy_chip_offset[] = { 0x0000, |
| 817 | 0x0400, |
| 818 | 0x0800, |
| 819 | 0x0C00, |
| 820 | 0x0200, |
| 821 | 0x0600, |
| 822 | 0x0A00, |
| 823 | 0x0E00 |
| 824 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | |
| 826 | /* PCI related definitions */ |
| 827 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 828 | static unsigned short cy_pci_nboard; |
| 829 | static unsigned short cy_isa_nboard; |
| 830 | static unsigned short cy_nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | #ifdef CONFIG_PCI |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 832 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
| 833 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI < 1Mb */ |
| 834 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, /* PCI > 1Mb */ |
| 835 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, /* 4Y PCI < 1Mb */ |
| 836 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, /* 4Y PCI > 1Mb */ |
| 837 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, /* 8Y PCI < 1Mb */ |
| 838 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, /* 8Y PCI > 1Mb */ |
| 839 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, /* Z PCI < 1Mb */ |
| 840 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, /* Z PCI > 1Mb */ |
| 841 | { } /* end of table */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 842 | }; |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 843 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | #endif |
| 845 | |
| 846 | static void cy_start(struct tty_struct *); |
| 847 | static void set_line_char(struct cyclades_port *); |
| 848 | static int cyz_issue_cmd(struct cyclades_card *, uclong, ucchar, uclong); |
| 849 | #ifdef CONFIG_ISA |
| 850 | static unsigned detect_isa_irq(void __iomem *); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 851 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 853 | static int cyclades_get_proc_info(char *, char **, off_t, int, int *, void *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | |
| 855 | #ifndef CONFIG_CYZ_INTR |
| 856 | static void cyz_poll(unsigned long); |
| 857 | |
| 858 | /* The Cyclades-Z polling cycle is defined by this variable */ |
| 859 | static long cyz_polling_cycle = CZ_DEF_POLL; |
| 860 | |
| 861 | static int cyz_timeron = 0; |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 862 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 864 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 865 | static void cyz_rx_restart(unsigned long); |
| 866 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 867 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 869 | static inline int serial_paranoia_check(struct cyclades_port *info, |
| 870 | char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | { |
| 872 | #ifdef SERIAL_PARANOIA_CHECK |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 873 | if (!info) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 874 | printk("cyc Warning: null cyclades_port for (%s) in %s\n", |
| 875 | name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 876 | return 1; |
| 877 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 879 | if ((long)info < (long)(&cy_port[0]) || |
| 880 | (long)(&cy_port[NR_PORTS]) < (long)info) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 881 | printk("cyc Warning: cyclades_port out of range for (%s) in " |
| 882 | "%s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 883 | return 1; |
| 884 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 886 | if (info->magic != CYCLADES_MAGIC) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 887 | printk("cyc Warning: bad magic number for serial struct (%s) " |
| 888 | "in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 889 | return 1; |
| 890 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 892 | return 0; |
| 893 | } /* serial_paranoia_check */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | |
| 895 | /* |
| 896 | * This routine is used by the interrupt handler to schedule |
| 897 | * processing in the software interrupt portion of the driver |
| 898 | * (also known as the "bottom half"). This can be called any |
| 899 | * number of times for any channel without harm. |
| 900 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 901 | static inline void cy_sched_event(struct cyclades_port *info, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 903 | info->event |= 1 << event; /* remember what kind of event and who */ |
| 904 | schedule_work(&info->tqueue); |
| 905 | } /* cy_sched_event */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | |
| 907 | /* |
| 908 | * This routine is used to handle the "bottom half" processing for the |
| 909 | * serial driver, known also the "software interrupt" processing. |
| 910 | * This processing is done at the kernel interrupt level, after the |
| 911 | * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This |
| 912 | * is where time-consuming activities which can not be done in the |
| 913 | * interrupt driver proper are done; the interrupt driver schedules |
| 914 | * them using cy_sched_event(), and they get done here. |
| 915 | * |
| 916 | * This is done through one level of indirection--the task queue. |
| 917 | * When a hardware interrupt service routine wants service by the |
| 918 | * driver's bottom half, it enqueues the appropriate tq_struct (one |
| 919 | * per port) to the keventd work queue and sets a request flag |
| 920 | * that the work queue be processed. |
| 921 | * |
| 922 | * Although this may seem unwieldy, it gives the system a way to |
| 923 | * pass an argument (in this case the pointer to the cyclades_port |
| 924 | * structure) to the bottom half of the driver. Previous kernels |
| 925 | * had to poll every port to see if that port needed servicing. |
| 926 | */ |
| 927 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 928 | do_softint(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 930 | struct cyclades_port *info = |
| 931 | container_of(work, struct cyclades_port, tqueue); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 932 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 934 | tty = info->tty; |
| 935 | if (!tty) |
| 936 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 938 | if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { |
| 939 | tty_hangup(info->tty); |
| 940 | wake_up_interruptible(&info->open_wait); |
| 941 | info->flags &= ~ASYNC_NORMAL_ACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 943 | if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) |
| 944 | wake_up_interruptible(&info->open_wait); |
| 945 | #ifdef CONFIG_CYZ_INTR |
| 946 | if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event)) { |
| 947 | if (cyz_rx_full_timer[info->line].function == NULL) { |
| 948 | cyz_rx_full_timer[info->line].expires = jiffies + 1; |
| 949 | cyz_rx_full_timer[info->line].function = cyz_rx_restart; |
| 950 | cyz_rx_full_timer[info->line].data = |
| 951 | (unsigned long)info; |
| 952 | add_timer(&cyz_rx_full_timer[info->line]); |
| 953 | } |
| 954 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 956 | if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) |
| 957 | wake_up_interruptible(&info->delta_msr_wait); |
| 958 | tty_wakeup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | #ifdef Z_WAKE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 960 | if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) |
| 961 | wake_up_interruptible(&info->shutdown_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | #endif |
| 963 | } /* do_softint */ |
| 964 | |
| 965 | |
| 966 | /***********************************************************/ |
| 967 | /********* Start of block of Cyclom-Y specific code ********/ |
| 968 | |
| 969 | /* This routine waits up to 1000 micro-seconds for the previous |
| 970 | command to the Cirrus chip to complete and then issues the |
| 971 | new command. An error is returned if the previous command |
| 972 | didn't finish within the time limit. |
| 973 | |
| 974 | This function is only called from inside spinlock-protected code. |
| 975 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 976 | static int cyy_issue_cmd(void __iomem * base_addr, u_char cmd, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 978 | volatile int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 980 | /* Check to see that the previous command has completed */ |
| 981 | for (i = 0; i < 100; i++) { |
| 982 | if (cy_readb(base_addr + (CyCCR << index)) == 0) { |
| 983 | break; |
| 984 | } |
| 985 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 987 | /* if the CCR never cleared, the previous command |
| 988 | didn't finish within the "reasonable time" */ |
| 989 | if (i == 100) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 990 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 992 | /* Issue the new command */ |
| 993 | cy_writeb(base_addr + (CyCCR << index), cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 995 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 996 | } /* cyy_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 997 | |
| 998 | #ifdef CONFIG_ISA |
| 999 | /* ISA interrupt detection code */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1000 | static unsigned detect_isa_irq(void __iomem * address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1002 | int irq; |
| 1003 | unsigned long irqs, flags; |
| 1004 | int save_xir, save_car; |
| 1005 | int index = 0; /* IRQ probing is only for ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1007 | /* forget possible initially masked and pending IRQ */ |
| 1008 | irq = probe_irq_off(probe_irq_on()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1010 | /* Clear interrupts on the board first */ |
| 1011 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 1012 | /* Cy_ClrIntr is 0x1800 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1014 | irqs = probe_irq_on(); |
| 1015 | /* Wait ... */ |
| 1016 | udelay(5000L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1018 | /* Enable the Tx interrupts on the CD1400 */ |
| 1019 | local_irq_save(flags); |
| 1020 | cy_writeb(address + (CyCAR << index), 0); |
| 1021 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1023 | cy_writeb(address + (CyCAR << index), 0); |
| 1024 | cy_writeb(address + (CySRER << index), |
| 1025 | cy_readb(address + (CySRER << index)) | CyTxRdy); |
| 1026 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1028 | /* Wait ... */ |
| 1029 | udelay(5000L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1031 | /* Check which interrupt is in use */ |
| 1032 | irq = probe_irq_off(irqs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1034 | /* Clean up */ |
| 1035 | save_xir = (u_char) cy_readb(address + (CyTIR << index)); |
| 1036 | save_car = cy_readb(address + (CyCAR << index)); |
| 1037 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
| 1038 | cy_writeb(address + (CySRER << index), |
| 1039 | cy_readb(address + (CySRER << index)) & ~CyTxRdy); |
| 1040 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
| 1041 | cy_writeb(address + (CyCAR << index), (save_car)); |
| 1042 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 1043 | /* Cy_ClrIntr is 0x1800 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1045 | return (irq > 0) ? irq : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1047 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1049 | static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1050 | void __iomem * base_addr, int status, int index) |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1051 | { |
| 1052 | struct cyclades_port *info; |
| 1053 | struct tty_struct *tty; |
| 1054 | volatile int char_count; |
| 1055 | int i, j, len, mdm_change, mdm_status, outch; |
| 1056 | int save_xir, channel, save_car; |
| 1057 | char data; |
| 1058 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1059 | if (status & CySRReceive) { /* reception interrupt */ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1060 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1061 | printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1062 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1063 | /* determine the channel & change to that context */ |
| 1064 | spin_lock(&cinfo->card_lock); |
| 1065 | save_xir = (u_char) cy_readb(base_addr + (CyRIR << index)); |
| 1066 | channel = (u_short) (save_xir & CyIRChannel); |
| 1067 | i = channel + chip * 4 + cinfo->first_line; |
| 1068 | info = &cy_port[i]; |
| 1069 | info->last_active = jiffies; |
| 1070 | save_car = cy_readb(base_addr + (CyCAR << index)); |
| 1071 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1072 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1073 | /* if there is nowhere to put the data, discard it */ |
| 1074 | if (info->tty == 0) { |
| 1075 | j = (cy_readb(base_addr + (CyRIVR << index)) & |
| 1076 | CyIVRMask); |
| 1077 | if (j == CyIVRRxEx) { /* exception */ |
| 1078 | data = cy_readb(base_addr + (CyRDSR << index)); |
| 1079 | } else { /* normal character reception */ |
| 1080 | char_count = cy_readb(base_addr + |
| 1081 | (CyRDCR << index)); |
| 1082 | while (char_count--) { |
| 1083 | data = cy_readb(base_addr + |
| 1084 | (CyRDSR << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1085 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1086 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1087 | } else { /* there is an open port for this data */ |
| 1088 | tty = info->tty; |
| 1089 | j = (cy_readb(base_addr + (CyRIVR << index)) & |
| 1090 | CyIVRMask); |
| 1091 | if (j == CyIVRRxEx) { /* exception */ |
| 1092 | data = cy_readb(base_addr + (CyRDSR << index)); |
| 1093 | |
| 1094 | /* For statistics only */ |
| 1095 | if (data & CyBREAK) |
| 1096 | info->icount.brk++; |
| 1097 | else if (data & CyFRAME) |
| 1098 | info->icount.frame++; |
| 1099 | else if (data & CyPARITY) |
| 1100 | info->icount.parity++; |
| 1101 | else if (data & CyOVERRUN) |
| 1102 | info->icount.overrun++; |
| 1103 | |
| 1104 | if (data & info->ignore_status_mask) { |
| 1105 | info->icount.rx++; |
| 1106 | return; |
| 1107 | } |
| 1108 | if (tty_buffer_request_room(tty, 1)) { |
| 1109 | if (data & info->read_status_mask) { |
| 1110 | if (data & CyBREAK) { |
| 1111 | tty_insert_flip_char( |
| 1112 | tty, |
| 1113 | cy_readb( |
| 1114 | base_addr + |
| 1115 | (CyRDSR << |
| 1116 | index)), |
| 1117 | TTY_BREAK); |
| 1118 | info->icount.rx++; |
| 1119 | if (info->flags & |
| 1120 | ASYNC_SAK) { |
| 1121 | do_SAK(tty); |
| 1122 | } |
| 1123 | } else if (data & CyFRAME) { |
| 1124 | tty_insert_flip_char( |
| 1125 | tty, |
| 1126 | cy_readb( |
| 1127 | base_addr + |
| 1128 | (CyRDSR << |
| 1129 | index)), |
| 1130 | TTY_FRAME); |
| 1131 | info->icount.rx++; |
| 1132 | info->idle_stats. |
| 1133 | frame_errs++; |
| 1134 | } else if (data & CyPARITY) { |
| 1135 | /* Pieces of seven... */ |
| 1136 | tty_insert_flip_char( |
| 1137 | tty, |
| 1138 | cy_readb( |
| 1139 | base_addr + |
| 1140 | (CyRDSR << |
| 1141 | index)), |
| 1142 | TTY_PARITY); |
| 1143 | info->icount.rx++; |
| 1144 | info->idle_stats. |
| 1145 | parity_errs++; |
| 1146 | } else if (data & CyOVERRUN) { |
| 1147 | tty_insert_flip_char( |
| 1148 | tty, 0, |
| 1149 | TTY_OVERRUN); |
| 1150 | info->icount.rx++; |
| 1151 | /* If the flip buffer itself is |
| 1152 | overflowing, we still lose |
| 1153 | the next incoming character. |
| 1154 | */ |
| 1155 | tty_insert_flip_char( |
| 1156 | tty, |
| 1157 | cy_readb( |
| 1158 | base_addr + |
| 1159 | (CyRDSR << |
| 1160 | index)), |
| 1161 | TTY_FRAME); |
| 1162 | info->icount.rx++; |
| 1163 | info->idle_stats. |
| 1164 | overruns++; |
| 1165 | /* These two conditions may imply */ |
| 1166 | /* a normal read should be done. */ |
| 1167 | /* }else if(data & CyTIMEOUT){ */ |
| 1168 | /* }else if(data & CySPECHAR){ */ |
| 1169 | } else { |
| 1170 | tty_insert_flip_char( |
| 1171 | tty, 0, |
| 1172 | TTY_NORMAL); |
| 1173 | info->icount.rx++; |
| 1174 | } |
| 1175 | } else { |
| 1176 | tty_insert_flip_char(tty, 0, |
| 1177 | TTY_NORMAL); |
| 1178 | info->icount.rx++; |
| 1179 | } |
| 1180 | } else { |
| 1181 | /* there was a software buffer |
| 1182 | overrun and nothing could be |
| 1183 | done about it!!! */ |
| 1184 | info->icount.buf_overrun++; |
| 1185 | info->idle_stats.overruns++; |
| 1186 | } |
| 1187 | } else { /* normal character reception */ |
| 1188 | /* load # chars available from the chip */ |
| 1189 | char_count = cy_readb(base_addr + |
| 1190 | (CyRDCR << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1191 | |
| 1192 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1193 | ++info->mon.int_count; |
| 1194 | info->mon.char_count += char_count; |
| 1195 | if (char_count > info->mon.char_max) |
| 1196 | info->mon.char_max = char_count; |
| 1197 | info->mon.char_last = char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1198 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1199 | len = tty_buffer_request_room(tty, char_count); |
| 1200 | while (len--) { |
| 1201 | data = cy_readb(base_addr + |
| 1202 | (CyRDSR << index)); |
| 1203 | tty_insert_flip_char(tty, data, |
| 1204 | TTY_NORMAL); |
| 1205 | info->idle_stats.recv_bytes++; |
| 1206 | info->icount.rx++; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1207 | #ifdef CY_16Y_HACK |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1208 | udelay(10L); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1209 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1210 | } |
| 1211 | info->idle_stats.recv_idle = jiffies; |
| 1212 | } |
| 1213 | tty_schedule_flip(tty); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1214 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1215 | /* end of service */ |
| 1216 | cy_writeb(base_addr + (CyRIR << index), (save_xir & 0x3f)); |
| 1217 | cy_writeb(base_addr + (CyCAR << index), (save_car)); |
| 1218 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1219 | } |
| 1220 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1221 | if (status & CySRTransmit) { /* transmission interrupt */ |
| 1222 | /* Since we only get here when the transmit buffer |
| 1223 | is empty, we know we can always stuff a dozen |
| 1224 | characters. */ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1225 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1226 | printk("cyy_interrupt: xmit intr, chip %d\n\r", chip); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1227 | #endif |
| 1228 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1229 | /* determine the channel & change to that context */ |
| 1230 | spin_lock(&cinfo->card_lock); |
| 1231 | save_xir = (u_char) cy_readb(base_addr + (CyTIR << index)); |
| 1232 | channel = (u_short) (save_xir & CyIRChannel); |
| 1233 | i = channel + chip * 4 + cinfo->first_line; |
| 1234 | save_car = cy_readb(base_addr + (CyCAR << index)); |
| 1235 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1236 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1237 | /* validate the port# (as configured and open) */ |
| 1238 | if ((i < 0) || (NR_PORTS <= i)) { |
| 1239 | cy_writeb(base_addr + (CySRER << index), |
| 1240 | cy_readb(base_addr + (CySRER << index)) & |
| 1241 | ~CyTxRdy); |
| 1242 | goto txend; |
| 1243 | } |
| 1244 | info = &cy_port[i]; |
| 1245 | info->last_active = jiffies; |
| 1246 | if (info->tty == 0) { |
| 1247 | cy_writeb(base_addr + (CySRER << index), |
| 1248 | cy_readb(base_addr + (CySRER << index)) & |
| 1249 | ~CyTxRdy); |
| 1250 | goto txdone; |
| 1251 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1252 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1253 | /* load the on-chip space for outbound data */ |
| 1254 | char_count = info->xmit_fifo_size; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1255 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1256 | if (info->x_char) { /* send special char */ |
| 1257 | outch = info->x_char; |
| 1258 | cy_writeb(base_addr + (CyTDR << index), outch); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1259 | char_count--; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1260 | info->icount.tx++; |
| 1261 | info->x_char = 0; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1262 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1263 | |
| 1264 | if (info->breakon || info->breakoff) { |
| 1265 | if (info->breakon) { |
| 1266 | cy_writeb(base_addr + (CyTDR << index), 0); |
| 1267 | cy_writeb(base_addr + (CyTDR << index), 0x81); |
| 1268 | info->breakon = 0; |
| 1269 | char_count -= 2; |
| 1270 | } |
| 1271 | if (info->breakoff) { |
| 1272 | cy_writeb(base_addr + (CyTDR << index), 0); |
| 1273 | cy_writeb(base_addr + (CyTDR << index), 0x83); |
| 1274 | info->breakoff = 0; |
| 1275 | char_count -= 2; |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | while (char_count-- > 0) { |
| 1280 | if (!info->xmit_cnt) { |
| 1281 | if (cy_readb(base_addr + (CySRER << index)) & |
| 1282 | CyTxMpty) { |
| 1283 | cy_writeb(base_addr + (CySRER << index), |
| 1284 | cy_readb(base_addr + |
| 1285 | (CySRER << index)) & |
| 1286 | ~CyTxMpty); |
| 1287 | } else { |
| 1288 | cy_writeb(base_addr + (CySRER << index), |
| 1289 | (cy_readb(base_addr + |
| 1290 | (CySRER << index)) & |
| 1291 | ~CyTxRdy) | CyTxMpty); |
| 1292 | } |
| 1293 | goto txdone; |
| 1294 | } |
| 1295 | if (info->xmit_buf == 0) { |
| 1296 | cy_writeb(base_addr + (CySRER << index), |
| 1297 | cy_readb(base_addr + (CySRER << index))& |
| 1298 | ~CyTxRdy); |
| 1299 | goto txdone; |
| 1300 | } |
| 1301 | if (info->tty->stopped || info->tty->hw_stopped) { |
| 1302 | cy_writeb(base_addr + (CySRER << index), |
| 1303 | cy_readb(base_addr + (CySRER << index))& |
| 1304 | ~CyTxRdy); |
| 1305 | goto txdone; |
| 1306 | } |
| 1307 | /* Because the Embedded Transmit Commands have |
| 1308 | been enabled, we must check to see if the |
| 1309 | escape character, NULL, is being sent. If it |
| 1310 | is, we must ensure that there is room for it |
| 1311 | to be doubled in the output stream. Therefore |
| 1312 | we no longer advance the pointer when the |
| 1313 | character is fetched, but rather wait until |
| 1314 | after the check for a NULL output character. |
| 1315 | This is necessary because there may not be |
| 1316 | room for the two chars needed to send a NULL.) |
| 1317 | */ |
| 1318 | outch = info->xmit_buf[info->xmit_tail]; |
| 1319 | if (outch) { |
| 1320 | info->xmit_cnt--; |
| 1321 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1322 | (SERIAL_XMIT_SIZE - 1); |
| 1323 | cy_writeb(base_addr + (CyTDR << index), outch); |
| 1324 | info->icount.tx++; |
| 1325 | } else { |
| 1326 | if (char_count > 1) { |
| 1327 | info->xmit_cnt--; |
| 1328 | info->xmit_tail = (info->xmit_tail + 1)& |
| 1329 | (SERIAL_XMIT_SIZE - 1); |
| 1330 | cy_writeb(base_addr + (CyTDR << index), |
| 1331 | outch); |
| 1332 | cy_writeb(base_addr + (CyTDR << index), |
| 1333 | 0); |
| 1334 | info->icount.tx++; |
| 1335 | char_count--; |
| 1336 | } else { |
| 1337 | } |
| 1338 | } |
| 1339 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1340 | |
| 1341 | txdone: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1342 | if (info->xmit_cnt < WAKEUP_CHARS) { |
| 1343 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); |
| 1344 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1345 | txend: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1346 | /* end of service */ |
| 1347 | cy_writeb(base_addr + (CyTIR << index), (save_xir & 0x3f)); |
| 1348 | cy_writeb(base_addr + (CyCAR << index), (save_car)); |
| 1349 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1350 | } |
| 1351 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1352 | if (status & CySRModem) { /* modem interrupt */ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1353 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1354 | /* determine the channel & change to that context */ |
| 1355 | spin_lock(&cinfo->card_lock); |
| 1356 | save_xir = (u_char) cy_readb(base_addr + (CyMIR << index)); |
| 1357 | channel = (u_short) (save_xir & CyIRChannel); |
| 1358 | info = &cy_port[channel + chip * 4 + cinfo->first_line]; |
| 1359 | info->last_active = jiffies; |
| 1360 | save_car = cy_readb(base_addr + (CyCAR << index)); |
| 1361 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1362 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1363 | mdm_change = cy_readb(base_addr + (CyMISR << index)); |
| 1364 | mdm_status = cy_readb(base_addr + (CyMSVR1 << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1365 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1366 | if (info->tty == 0) { /* no place for data, ignore it */ |
| 1367 | ; |
| 1368 | } else { |
| 1369 | if (mdm_change & CyANY_DELTA) { |
| 1370 | /* For statistics only */ |
| 1371 | if (mdm_change & CyDCD) |
| 1372 | info->icount.dcd++; |
| 1373 | if (mdm_change & CyCTS) |
| 1374 | info->icount.cts++; |
| 1375 | if (mdm_change & CyDSR) |
| 1376 | info->icount.dsr++; |
| 1377 | if (mdm_change & CyRI) |
| 1378 | info->icount.rng++; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1379 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1380 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1381 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1382 | |
| 1383 | if ((mdm_change & CyDCD) && |
| 1384 | (info->flags & ASYNC_CHECK_CD)) { |
| 1385 | if (mdm_status & CyDCD) { |
| 1386 | cy_sched_event(info, |
| 1387 | Cy_EVENT_OPEN_WAKEUP); |
| 1388 | } else { |
| 1389 | cy_sched_event(info, Cy_EVENT_HANGUP); |
| 1390 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1391 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1392 | if ((mdm_change & CyCTS) && |
| 1393 | (info->flags & ASYNC_CTS_FLOW)) { |
| 1394 | if (info->tty->hw_stopped) { |
| 1395 | if (mdm_status & CyCTS) { |
| 1396 | /* cy_start isn't used |
| 1397 | because... !!! */ |
| 1398 | info->tty->hw_stopped = 0; |
| 1399 | cy_writeb(base_addr + |
| 1400 | (CySRER << index), |
| 1401 | cy_readb(base_addr + |
| 1402 | (CySRER << |
| 1403 | index))| |
| 1404 | CyTxRdy); |
| 1405 | cy_sched_event(info, |
| 1406 | Cy_EVENT_WRITE_WAKEUP); |
| 1407 | } |
| 1408 | } else { |
| 1409 | if (!(mdm_status & CyCTS)) { |
| 1410 | /* cy_stop isn't used |
| 1411 | because ... !!! */ |
| 1412 | info->tty->hw_stopped = 1; |
| 1413 | cy_writeb(base_addr + |
| 1414 | (CySRER << index), |
| 1415 | cy_readb(base_addr + |
| 1416 | (CySRER << |
| 1417 | index)) & |
| 1418 | ~CyTxRdy); |
| 1419 | } |
| 1420 | } |
| 1421 | } |
| 1422 | if (mdm_change & CyDSR) { |
| 1423 | } |
| 1424 | if (mdm_change & CyRI) { |
| 1425 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1426 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1427 | /* end of service */ |
| 1428 | cy_writeb(base_addr + (CyMIR << index), (save_xir & 0x3f)); |
| 1429 | cy_writeb(base_addr + (CyCAR << index), save_car); |
| 1430 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1431 | } |
| 1432 | } |
| 1433 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1434 | /* The real interrupt service routine is called |
| 1435 | whenever the card wants its hand held--chars |
| 1436 | received, out buffer empty, modem change, etc. |
| 1437 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1438 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1440 | int status; |
| 1441 | struct cyclades_card *cinfo; |
| 1442 | void __iomem *base_addr, *card_base_addr; |
| 1443 | int chip; |
| 1444 | int index; |
| 1445 | int too_many; |
| 1446 | int had_work; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1447 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1448 | if ((cinfo = (struct cyclades_card *)dev_id) == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1450 | printk("cyy_interrupt: spurious interrupt %d\n\r", irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1452 | return IRQ_NONE; /* spurious interrupt */ |
| 1453 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1455 | card_base_addr = cinfo->base_addr; |
| 1456 | index = cinfo->bus_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1458 | /* This loop checks all chips in the card. Make a note whenever |
| 1459 | _any_ chip had some work to do, as this is considered an |
| 1460 | indication that there will be more to do. Only when no chip |
| 1461 | has any work does this outermost loop exit. |
| 1462 | */ |
| 1463 | do { |
| 1464 | had_work = 0; |
| 1465 | for (chip = 0; chip < cinfo->num_chips; chip++) { |
| 1466 | base_addr = cinfo->base_addr + |
| 1467 | (cy_chip_offset[chip] << index); |
| 1468 | too_many = 0; |
| 1469 | while ((status = cy_readb(base_addr + |
| 1470 | (CySVRR << index))) != 0x00) { |
| 1471 | had_work++; |
| 1472 | /* The purpose of the following test is to ensure that |
| 1473 | no chip can monopolize the driver. This forces the |
| 1474 | chips to be checked in a round-robin fashion (after |
| 1475 | draining each of a bunch (1000) of characters). |
| 1476 | */ |
| 1477 | if (1000 < too_many++) { |
| 1478 | break; |
| 1479 | } |
| 1480 | cyy_intr_chip(cinfo, chip, base_addr, status, |
| 1481 | index); |
| 1482 | } |
| 1483 | } |
| 1484 | } while (had_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1486 | /* clear interrupts */ |
| 1487 | spin_lock(&cinfo->card_lock); |
| 1488 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); |
| 1489 | /* Cy_ClrIntr is 0x1800 */ |
| 1490 | spin_unlock(&cinfo->card_lock); |
| 1491 | return IRQ_HANDLED; |
| 1492 | } /* cyy_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | |
| 1494 | /***********************************************************/ |
| 1495 | /********* End of block of Cyclom-Y specific code **********/ |
| 1496 | /******** Start of block of Cyclades-Z specific code *********/ |
| 1497 | /***********************************************************/ |
| 1498 | |
| 1499 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1500 | cyz_fetch_msg(struct cyclades_card *cinfo, |
| 1501 | uclong * channel, ucchar * cmd, uclong * param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1503 | struct FIRM_ID __iomem *firm_id; |
| 1504 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 1505 | struct BOARD_CTRL __iomem *board_ctrl; |
| 1506 | unsigned long loc_doorbell; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1508 | firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1509 | if (!ISZLOADED(*cinfo)) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1510 | return -1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1511 | } |
| 1512 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & |
| 1513 | 0xfffff); |
| 1514 | board_ctrl = &zfw_ctrl->board_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1515 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1516 | loc_doorbell = cy_readl(&((struct RUNTIME_9060 __iomem *) |
| 1517 | (cinfo->ctl_addr))->loc_doorbell); |
| 1518 | if (loc_doorbell) { |
| 1519 | *cmd = (char)(0xff & loc_doorbell); |
| 1520 | *channel = cy_readl(&board_ctrl->fwcmd_channel); |
| 1521 | *param = (uclong) cy_readl(&board_ctrl->fwcmd_param); |
| 1522 | cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
| 1523 | loc_doorbell, 0xffffffff); |
| 1524 | return 1; |
| 1525 | } |
| 1526 | return 0; |
| 1527 | } /* cyz_fetch_msg */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | |
| 1529 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1530 | cyz_issue_cmd(struct cyclades_card *cinfo, |
| 1531 | uclong channel, ucchar cmd, uclong param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1532 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1533 | struct FIRM_ID __iomem *firm_id; |
| 1534 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 1535 | struct BOARD_CTRL __iomem *board_ctrl; |
| 1536 | unsigned long __iomem *pci_doorbell; |
| 1537 | int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1539 | firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1540 | if (!ISZLOADED(*cinfo)) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1541 | return -1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1542 | } |
| 1543 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & |
| 1544 | 0xfffff); |
| 1545 | board_ctrl = &zfw_ctrl->board_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1547 | index = 0; |
| 1548 | pci_doorbell = |
| 1549 | &((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->pci_doorbell; |
| 1550 | while ((cy_readl(pci_doorbell) & 0xff) != 0) { |
| 1551 | if (index++ == 1000) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1552 | return (int)(cy_readl(pci_doorbell) & 0xff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1553 | } |
| 1554 | udelay(50L); |
| 1555 | } |
| 1556 | cy_writel(&board_ctrl->hcmd_channel, channel); |
| 1557 | cy_writel(&board_ctrl->hcmd_param, param); |
| 1558 | cy_writel(pci_doorbell, (long)cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1560 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1561 | } /* cyz_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
| 1563 | static void |
| 1564 | cyz_handle_rx(struct cyclades_port *info, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1565 | volatile struct CH_CTRL __iomem * ch_ctrl, |
| 1566 | volatile struct BUF_CTRL __iomem * buf_ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1567 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1568 | struct cyclades_card *cinfo = &cy_card[info->card]; |
| 1569 | struct tty_struct *tty = info->tty; |
| 1570 | volatile int char_count; |
| 1571 | int len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1573 | int small_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1575 | char data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1577 | volatile uclong rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1579 | rx_get = new_rx_get = cy_readl(&buf_ctrl->rx_get); |
| 1580 | rx_put = cy_readl(&buf_ctrl->rx_put); |
| 1581 | rx_bufsize = cy_readl(&buf_ctrl->rx_bufsize); |
| 1582 | rx_bufaddr = cy_readl(&buf_ctrl->rx_bufaddr); |
| 1583 | if (rx_put >= rx_get) |
| 1584 | char_count = rx_put - rx_get; |
| 1585 | else |
| 1586 | char_count = rx_put - rx_get + rx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1588 | if (char_count) { |
| 1589 | info->last_active = jiffies; |
| 1590 | info->jiffies[1] = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | |
| 1592 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1593 | info->mon.int_count++; |
| 1594 | info->mon.char_count += char_count; |
| 1595 | if (char_count > info->mon.char_max) |
| 1596 | info->mon.char_max = char_count; |
| 1597 | info->mon.char_last = char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1599 | if (tty == 0) { |
| 1600 | /* flush received characters */ |
| 1601 | new_rx_get = (new_rx_get + char_count) & |
| 1602 | (rx_bufsize - 1); |
| 1603 | info->rflush_count++; |
| 1604 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1606 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
| 1607 | for performance, but because of buffer boundaries, there |
| 1608 | may be several steps to the operation */ |
| 1609 | while (0 < (small_count = min_t(unsigned int, |
| 1610 | rx_bufsize - new_rx_get, |
| 1611 | min_t(unsigned int, TTY_FLIPBUF_SIZE - |
| 1612 | tty->flip.count, char_count)))){ |
| 1613 | memcpy_fromio(tty->flip.char_buf_ptr, |
| 1614 | (char *)(cinfo->base_addr + rx_bufaddr + |
| 1615 | new_rx_get), |
| 1616 | small_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1618 | tty->flip.char_buf_ptr += small_count; |
| 1619 | memset(tty->flip.flag_buf_ptr, TTY_NORMAL, |
| 1620 | small_count); |
| 1621 | tty->flip.flag_buf_ptr += small_count; |
| 1622 | new_rx_get = (new_rx_get + small_count) & |
| 1623 | (rx_bufsize - 1); |
| 1624 | char_count -= small_count; |
| 1625 | info->icount.rx += small_count; |
| 1626 | info->idle_stats.recv_bytes += small_count; |
| 1627 | tty->flip.count += small_count; |
| 1628 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1630 | len = tty_buffer_request_room(tty, char_count); |
| 1631 | while (len--) { |
| 1632 | data = cy_readb(cinfo->base_addr + rx_bufaddr + |
| 1633 | new_rx_get); |
| 1634 | new_rx_get = (new_rx_get + 1)& (rx_bufsize - 1); |
| 1635 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
| 1636 | info->idle_stats.recv_bytes++; |
| 1637 | info->icount.rx++; |
| 1638 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1639 | #endif |
| 1640 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1641 | /* Recalculate the number of chars in the RX buffer and issue |
| 1642 | a cmd in case it's higher than the RX high water mark */ |
| 1643 | rx_put = cy_readl(&buf_ctrl->rx_put); |
| 1644 | if (rx_put >= rx_get) |
| 1645 | char_count = rx_put - rx_get; |
| 1646 | else |
| 1647 | char_count = rx_put - rx_get + rx_bufsize; |
Jiri Slaby | 90cc301 | 2006-12-08 02:39:31 -0800 | [diff] [blame] | 1648 | if (char_count >= (int)cy_readl(&buf_ctrl-> |
| 1649 | rx_threshold)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1650 | cy_sched_event(info, Cy_EVENT_Z_RX_FULL); |
| 1651 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1653 | info->idle_stats.recv_idle = jiffies; |
| 1654 | tty_schedule_flip(tty); |
| 1655 | } |
| 1656 | /* Update rx_get */ |
| 1657 | cy_writel(&buf_ctrl->rx_get, new_rx_get); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1658 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | } |
| 1660 | |
| 1661 | static void |
| 1662 | cyz_handle_tx(struct cyclades_port *info, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1663 | volatile struct CH_CTRL __iomem * ch_ctrl, |
| 1664 | volatile struct BUF_CTRL __iomem * buf_ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1666 | struct cyclades_card *cinfo = &cy_card[info->card]; |
| 1667 | struct tty_struct *tty = info->tty; |
| 1668 | char data; |
| 1669 | volatile int char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1670 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1671 | int small_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1673 | volatile uclong tx_put, tx_get, tx_bufsize, tx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1674 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1675 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
| 1676 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1678 | tx_get = cy_readl(&buf_ctrl->tx_get); |
| 1679 | tx_put = cy_readl(&buf_ctrl->tx_put); |
| 1680 | tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize); |
| 1681 | tx_bufaddr = cy_readl(&buf_ctrl->tx_bufaddr); |
| 1682 | if (tx_put >= tx_get) |
| 1683 | char_count = tx_get - tx_put - 1 + tx_bufsize; |
| 1684 | else |
| 1685 | char_count = tx_get - tx_put - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1686 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1687 | if (char_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1688 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1689 | if (tty == 0) { |
| 1690 | goto ztxdone; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1691 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1692 | |
| 1693 | if (info->x_char) { /* send special char */ |
| 1694 | data = info->x_char; |
| 1695 | |
| 1696 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1697 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1698 | info->x_char = 0; |
| 1699 | char_count--; |
| 1700 | info->icount.tx++; |
| 1701 | info->last_active = jiffies; |
| 1702 | info->jiffies[2] = jiffies; |
| 1703 | } |
| 1704 | #ifdef BLOCKMOVE |
| 1705 | while (0 < (small_count = min_t(unsigned int, |
| 1706 | tx_bufsize - tx_put, min_t(unsigned int, |
| 1707 | (SERIAL_XMIT_SIZE - info->xmit_tail), |
| 1708 | min_t(unsigned int, info->xmit_cnt, |
| 1709 | char_count))))) { |
| 1710 | |
| 1711 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + |
| 1712 | tx_put), |
| 1713 | &info->xmit_buf[info->xmit_tail], |
| 1714 | small_count); |
| 1715 | |
| 1716 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); |
| 1717 | char_count -= small_count; |
| 1718 | info->icount.tx += small_count; |
| 1719 | info->xmit_cnt -= small_count; |
| 1720 | info->xmit_tail = (info->xmit_tail + small_count) & |
| 1721 | (SERIAL_XMIT_SIZE - 1); |
| 1722 | info->last_active = jiffies; |
| 1723 | info->jiffies[2] = jiffies; |
| 1724 | } |
| 1725 | #else |
| 1726 | while (info->xmit_cnt && char_count) { |
| 1727 | data = info->xmit_buf[info->xmit_tail]; |
| 1728 | info->xmit_cnt--; |
| 1729 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1730 | (SERIAL_XMIT_SIZE - 1); |
| 1731 | |
| 1732 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1733 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1734 | char_count--; |
| 1735 | info->icount.tx++; |
| 1736 | info->last_active = jiffies; |
| 1737 | info->jiffies[2] = jiffies; |
| 1738 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1740 | ztxdone: |
| 1741 | if (info->xmit_cnt < WAKEUP_CHARS) { |
| 1742 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); |
| 1743 | } |
| 1744 | /* Update tx_put */ |
| 1745 | cy_writel(&buf_ctrl->tx_put, tx_put); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1747 | } |
| 1748 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1749 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1751 | struct tty_struct *tty; |
| 1752 | struct cyclades_port *info; |
| 1753 | static volatile struct FIRM_ID __iomem *firm_id; |
| 1754 | static volatile struct ZFW_CTRL __iomem *zfw_ctrl; |
| 1755 | static volatile struct BOARD_CTRL __iomem *board_ctrl; |
| 1756 | static volatile struct CH_CTRL __iomem *ch_ctrl; |
| 1757 | static volatile struct BUF_CTRL __iomem *buf_ctrl; |
| 1758 | uclong channel; |
| 1759 | ucchar cmd; |
| 1760 | uclong param; |
| 1761 | uclong hw_ver, fw_ver; |
| 1762 | int special_count; |
| 1763 | int delta_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | |
| 1765 | firm_id = cinfo->base_addr + ID_ADDRESS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1766 | zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & |
| 1767 | 0xfffff); |
| 1768 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 1769 | fw_ver = cy_readl(&board_ctrl->fw_version); |
| 1770 | hw_ver = cy_readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
| 1771 | mail_box_0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1773 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { |
| 1774 | special_count = 0; |
| 1775 | delta_count = 0; |
| 1776 | info = &cy_port[channel + cinfo->first_line]; |
| 1777 | if ((tty = info->tty) == 0) { |
| 1778 | continue; |
| 1779 | } |
| 1780 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
| 1781 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); |
| 1782 | |
| 1783 | switch (cmd) { |
| 1784 | case C_CM_PR_ERROR: |
| 1785 | tty_insert_flip_char(tty, 0, TTY_PARITY); |
| 1786 | info->icount.rx++; |
| 1787 | special_count++; |
| 1788 | break; |
| 1789 | case C_CM_FR_ERROR: |
| 1790 | tty_insert_flip_char(tty, 0, TTY_FRAME); |
| 1791 | info->icount.rx++; |
| 1792 | special_count++; |
| 1793 | break; |
| 1794 | case C_CM_RXBRK: |
| 1795 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
| 1796 | info->icount.rx++; |
| 1797 | special_count++; |
| 1798 | break; |
| 1799 | case C_CM_MDCD: |
| 1800 | info->icount.dcd++; |
| 1801 | delta_count++; |
| 1802 | if (info->flags & ASYNC_CHECK_CD) { |
| 1803 | if ((fw_ver > 241 ? ((u_long) param) : |
| 1804 | cy_readl(&ch_ctrl->rs_status)) & |
| 1805 | C_RS_DCD) { |
| 1806 | cy_sched_event(info, |
| 1807 | Cy_EVENT_OPEN_WAKEUP); |
| 1808 | } else { |
| 1809 | cy_sched_event(info, Cy_EVENT_HANGUP); |
| 1810 | } |
| 1811 | } |
| 1812 | break; |
| 1813 | case C_CM_MCTS: |
| 1814 | info->icount.cts++; |
| 1815 | delta_count++; |
| 1816 | break; |
| 1817 | case C_CM_MRI: |
| 1818 | info->icount.rng++; |
| 1819 | delta_count++; |
| 1820 | break; |
| 1821 | case C_CM_MDSR: |
| 1822 | info->icount.dsr++; |
| 1823 | delta_count++; |
| 1824 | break; |
| 1825 | #ifdef Z_WAKE |
| 1826 | case C_CM_IOCTLW: |
| 1827 | cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); |
| 1828 | break; |
| 1829 | #endif |
| 1830 | #ifdef CONFIG_CYZ_INTR |
| 1831 | case C_CM_RXHIWM: |
| 1832 | case C_CM_RXNNDT: |
| 1833 | case C_CM_INTBACK2: |
| 1834 | /* Reception Interrupt */ |
| 1835 | #ifdef CY_DEBUG_INTERRUPTS |
| 1836 | printk("cyz_interrupt: rcvd intr, card %d, " |
| 1837 | "port %ld\n\r", info->card, channel); |
| 1838 | #endif |
| 1839 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
| 1840 | break; |
| 1841 | case C_CM_TXBEMPTY: |
| 1842 | case C_CM_TXLOWWM: |
| 1843 | case C_CM_INTBACK: |
| 1844 | /* Transmission Interrupt */ |
| 1845 | #ifdef CY_DEBUG_INTERRUPTS |
| 1846 | printk("cyz_interrupt: xmit intr, card %d, " |
| 1847 | "port %ld\n\r", info->card, channel); |
| 1848 | #endif |
| 1849 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
| 1850 | break; |
| 1851 | #endif /* CONFIG_CYZ_INTR */ |
| 1852 | case C_CM_FATAL: |
| 1853 | /* should do something with this !!! */ |
| 1854 | break; |
| 1855 | default: |
| 1856 | break; |
| 1857 | } |
| 1858 | if (delta_count) |
| 1859 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); |
| 1860 | if (special_count) |
| 1861 | tty_schedule_flip(tty); |
| 1862 | } |
| 1863 | } |
| 1864 | |
| 1865 | #ifdef CONFIG_CYZ_INTR |
| 1866 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
| 1867 | { |
| 1868 | struct cyclades_card *cinfo; |
| 1869 | |
| 1870 | if ((cinfo = (struct cyclades_card *)dev_id) == 0) { |
| 1871 | #ifdef CY_DEBUG_INTERRUPTS |
| 1872 | printk("cyz_interrupt: spurious interrupt %d\n\r", irq); |
| 1873 | #endif |
| 1874 | return IRQ_NONE; /* spurious interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | } |
| 1876 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1877 | if (!ISZLOADED(*cinfo)) { |
| 1878 | #ifdef CY_DEBUG_INTERRUPTS |
| 1879 | printk("cyz_interrupt: board not yet loaded (IRQ%d).\n\r", irq); |
| 1880 | #endif |
| 1881 | return IRQ_NONE; |
| 1882 | } |
| 1883 | |
| 1884 | /* Handle the interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | cyz_handle_cmd(cinfo); |
| 1886 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1887 | return IRQ_HANDLED; |
| 1888 | } /* cyz_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1890 | static void cyz_rx_restart(unsigned long arg) |
| 1891 | { |
| 1892 | struct cyclades_port *info = (struct cyclades_port *)arg; |
| 1893 | int retval; |
| 1894 | int card = info->card; |
| 1895 | uclong channel = (info->line) - (cy_card[card].first_line); |
| 1896 | unsigned long flags; |
| 1897 | |
| 1898 | CY_LOCK(info, flags); |
| 1899 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK2, 0L); |
| 1900 | if (retval != 0) { |
| 1901 | printk("cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
| 1902 | info->line, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1904 | cyz_rx_full_timer[info->line].function = NULL; |
| 1905 | CY_UNLOCK(info, flags); |
| 1906 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1908 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1910 | static void cyz_poll(unsigned long arg) |
| 1911 | { |
| 1912 | struct cyclades_card *cinfo; |
| 1913 | struct cyclades_port *info; |
| 1914 | struct tty_struct *tty; |
| 1915 | static volatile struct FIRM_ID *firm_id; |
| 1916 | static volatile struct ZFW_CTRL *zfw_ctrl; |
| 1917 | static volatile struct BOARD_CTRL *board_ctrl; |
| 1918 | static volatile struct CH_CTRL *ch_ctrl; |
| 1919 | static volatile struct BUF_CTRL *buf_ctrl; |
| 1920 | int card, port; |
| 1921 | |
| 1922 | cyz_timerlist.expires = jiffies + (HZ); |
| 1923 | for (card = 0; card < NR_CARDS; card++) { |
| 1924 | cinfo = &cy_card[card]; |
| 1925 | |
| 1926 | if (!IS_CYC_Z(*cinfo)) |
| 1927 | continue; |
| 1928 | if (!ISZLOADED(*cinfo)) |
| 1929 | continue; |
| 1930 | |
| 1931 | firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1932 | zfw_ctrl = cinfo->base_addr + |
| 1933 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 1934 | board_ctrl = &(zfw_ctrl->board_ctrl); |
| 1935 | |
| 1936 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
| 1937 | if (!cinfo->intr_enabled) { |
| 1938 | cinfo->nports = (int)cy_readl(&board_ctrl->n_channel); |
| 1939 | cinfo->intr_enabled = 1; |
| 1940 | continue; |
| 1941 | } |
| 1942 | |
| 1943 | cyz_handle_cmd(cinfo); |
| 1944 | |
| 1945 | for (port = 0; port < cinfo->nports; port++) { |
| 1946 | info = &cy_port[port + cinfo->first_line]; |
| 1947 | tty = info->tty; |
| 1948 | ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); |
| 1949 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); |
| 1950 | |
| 1951 | if (!info->throttle) |
| 1952 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
| 1953 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
| 1954 | } |
| 1955 | /* poll every 'cyz_polling_cycle' period */ |
| 1956 | cyz_timerlist.expires = jiffies + cyz_polling_cycle; |
| 1957 | } |
| 1958 | add_timer(&cyz_timerlist); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1959 | } /* cyz_poll */ |
| 1960 | |
| 1961 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | |
| 1963 | /********** End of block of Cyclades-Z specific code *********/ |
| 1964 | /***********************************************************/ |
| 1965 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1966 | /* This is called whenever a port becomes active; |
| 1967 | interrupts are enabled and DTR & RTS are turned on. |
| 1968 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1969 | static int startup(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1971 | unsigned long flags; |
| 1972 | int retval = 0; |
| 1973 | void __iomem *base_addr; |
| 1974 | int card, chip, channel, index; |
| 1975 | unsigned long page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1977 | card = info->card; |
| 1978 | channel = (info->line) - (cy_card[card].first_line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1980 | page = get_zeroed_page(GFP_KERNEL); |
| 1981 | if (!page) |
| 1982 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | |
| 1984 | CY_LOCK(info, flags); |
| 1985 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1986 | if (info->flags & ASYNC_INITIALIZED) { |
| 1987 | free_page(page); |
| 1988 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1990 | |
| 1991 | if (!info->type) { |
| 1992 | if (info->tty) { |
| 1993 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 1994 | } |
| 1995 | free_page(page); |
| 1996 | goto errout; |
| 1997 | } |
| 1998 | |
| 1999 | if (info->xmit_buf) |
| 2000 | free_page(page); |
| 2001 | else |
| 2002 | info->xmit_buf = (unsigned char *)page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2003 | |
| 2004 | CY_UNLOCK(info, flags); |
| 2005 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2006 | set_line_char(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2008 | if (!IS_CYC_Z(cy_card[card])) { |
| 2009 | chip = channel >> 2; |
| 2010 | channel &= 0x03; |
| 2011 | index = cy_card[card].bus_index; |
| 2012 | base_addr = cy_card[card].base_addr + |
| 2013 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | |
| 2015 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2016 | printk("cyc startup card %d, chip %d, channel %d, " |
| 2017 | "base_addr %lx\n", |
| 2018 | card, chip, channel, (long)base_addr); |
| 2019 | /**/ |
| 2020 | #endif |
| 2021 | CY_LOCK(info, flags); |
| 2022 | |
| 2023 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2024 | |
| 2025 | cy_writeb(base_addr + (CyRTPR << index), |
| 2026 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 2027 | /* 10ms rx timeout */ |
| 2028 | |
| 2029 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
| 2030 | index); |
| 2031 | |
| 2032 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2033 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); |
| 2034 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); |
| 2035 | |
| 2036 | #ifdef CY_DEBUG_DTR |
| 2037 | printk("cyc:startup raising DTR\n"); |
| 2038 | printk(" status: 0x%x, 0x%x\n", |
| 2039 | cy_readb(base_addr + (CyMSVR1 << index)), |
| 2040 | cy_readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | #endif |
| 2042 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2043 | cy_writeb(base_addr + (CySRER << index), |
| 2044 | cy_readb(base_addr + (CySRER << index)) | CyRxData); |
| 2045 | info->flags |= ASYNC_INITIALIZED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2047 | if (info->tty) { |
| 2048 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2049 | } |
| 2050 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 2051 | info->breakon = info->breakoff = 0; |
| 2052 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 2053 | info->idle_stats.in_use = |
| 2054 | info->idle_stats.recv_idle = |
| 2055 | info->idle_stats.xmit_idle = jiffies; |
| 2056 | |
| 2057 | CY_UNLOCK(info, flags); |
| 2058 | |
| 2059 | } else { |
| 2060 | struct FIRM_ID __iomem *firm_id; |
| 2061 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2062 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2063 | struct CH_CTRL __iomem *ch_ctrl; |
| 2064 | int retval; |
| 2065 | |
| 2066 | base_addr = cy_card[card].base_addr; |
| 2067 | |
| 2068 | firm_id = base_addr + ID_ADDRESS; |
| 2069 | if (!ISZLOADED(cy_card[card])) { |
| 2070 | return -ENODEV; |
| 2071 | } |
| 2072 | |
| 2073 | zfw_ctrl = cy_card[card].base_addr + |
| 2074 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 2075 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2076 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2077 | |
| 2078 | #ifdef CY_DEBUG_OPEN |
| 2079 | printk("cyc startup Z card %d, channel %d, base_addr %lx\n", |
| 2080 | card, channel, (long)base_addr); |
| 2081 | /**/ |
| 2082 | #endif |
| 2083 | CY_LOCK(info, flags); |
| 2084 | |
| 2085 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2086 | #ifdef Z_WAKE |
| 2087 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2088 | cy_writel(&ch_ctrl[channel].intr_enable, |
| 2089 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 2090 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2092 | cy_writel(&ch_ctrl[channel].intr_enable, |
| 2093 | C_IN_IOCTLW | C_IN_MDCD); |
| 2094 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2095 | #else |
| 2096 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2097 | cy_writel(&ch_ctrl[channel].intr_enable, |
| 2098 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 2099 | C_IN_RXNNDT | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2100 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2101 | cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); |
| 2102 | #endif /* CONFIG_CYZ_INTR */ |
| 2103 | #endif /* Z_WAKE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2105 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L); |
| 2106 | if (retval != 0) { |
| 2107 | printk("cyc:startup(1) retval on ttyC%d was %x\n", |
| 2108 | info->line, retval); |
| 2109 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2111 | /* Flush RX buffers before raising DTR and RTS */ |
| 2112 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_RX, |
| 2113 | 0L); |
| 2114 | if (retval != 0) { |
| 2115 | printk("cyc:startup(2) retval on ttyC%d was %x\n", |
| 2116 | info->line, retval); |
| 2117 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2119 | /* set timeout !!! */ |
| 2120 | /* set RTS and DTR !!! */ |
| 2121 | cy_writel(&ch_ctrl[channel].rs_control, |
| 2122 | cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | |
| 2123 | C_RS_DTR); |
| 2124 | retval = cyz_issue_cmd(&cy_card[info->card], channel, |
| 2125 | C_CM_IOCTLM, 0L); |
| 2126 | if (retval != 0) { |
| 2127 | printk("cyc:startup(3) retval on ttyC%d was %x\n", |
| 2128 | info->line, retval); |
| 2129 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2131 | printk("cyc:startup raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | #endif |
| 2133 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2134 | /* enable send, recv, modem !!! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2135 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2136 | info->flags |= ASYNC_INITIALIZED; |
| 2137 | if (info->tty) { |
| 2138 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2139 | } |
| 2140 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 2141 | info->breakon = info->breakoff = 0; |
| 2142 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 2143 | info->idle_stats.in_use = |
| 2144 | info->idle_stats.recv_idle = |
| 2145 | info->idle_stats.xmit_idle = jiffies; |
| 2146 | |
| 2147 | CY_UNLOCK(info, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | |
| 2150 | #ifdef CY_DEBUG_OPEN |
| 2151 | printk(" cyc startup done\n"); |
| 2152 | #endif |
| 2153 | return 0; |
| 2154 | |
| 2155 | errout: |
| 2156 | CY_UNLOCK(info, flags); |
| 2157 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2158 | } /* startup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2160 | static void start_xmit(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2161 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2162 | unsigned long flags; |
| 2163 | void __iomem *base_addr; |
| 2164 | int card, chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2166 | card = info->card; |
| 2167 | channel = (info->line) - (cy_card[card].first_line); |
| 2168 | if (!IS_CYC_Z(cy_card[card])) { |
| 2169 | chip = channel >> 2; |
| 2170 | channel &= 0x03; |
| 2171 | index = cy_card[card].bus_index; |
| 2172 | base_addr = cy_card[card].base_addr + |
| 2173 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2175 | CY_LOCK(info, flags); |
| 2176 | cy_writeb(base_addr + (CyCAR << index), channel); |
| 2177 | cy_writeb(base_addr + (CySRER << index), |
| 2178 | cy_readb(base_addr + (CySRER << index)) | CyTxRdy); |
| 2179 | CY_UNLOCK(info, flags); |
| 2180 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2181 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2182 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2183 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2184 | CY_LOCK(info, flags); |
| 2185 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK, |
| 2186 | 0L); |
| 2187 | if (retval != 0) { |
| 2188 | printk("cyc:start_xmit retval on ttyC%d was %x\n", |
| 2189 | info->line, retval); |
| 2190 | } |
| 2191 | CY_UNLOCK(info, flags); |
| 2192 | #else /* CONFIG_CYZ_INTR */ |
| 2193 | /* Don't have to do anything at this time */ |
| 2194 | #endif /* CONFIG_CYZ_INTR */ |
| 2195 | } |
| 2196 | } /* start_xmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2197 | |
| 2198 | /* |
| 2199 | * This routine shuts down a serial port; interrupts are disabled, |
| 2200 | * and DTR is dropped if the hangup on close termio flag is on. |
| 2201 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2202 | static void shutdown(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2204 | unsigned long flags; |
| 2205 | void __iomem *base_addr; |
| 2206 | int card, chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2208 | if (!(info->flags & ASYNC_INITIALIZED)) { |
| 2209 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | } |
| 2211 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2212 | card = info->card; |
| 2213 | channel = info->line - cy_card[card].first_line; |
| 2214 | if (!IS_CYC_Z(cy_card[card])) { |
| 2215 | chip = channel >> 2; |
| 2216 | channel &= 0x03; |
| 2217 | index = cy_card[card].bus_index; |
| 2218 | base_addr = cy_card[card].base_addr + |
| 2219 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2220 | |
| 2221 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2222 | printk("cyc shutdown Y card %d, chip %d, channel %d, " |
| 2223 | "base_addr %lx\n", |
| 2224 | card, chip, channel, (long)base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2226 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2227 | CY_LOCK(info, flags); |
| 2228 | |
| 2229 | /* Clear delta_msr_wait queue to avoid mem leaks. */ |
| 2230 | wake_up_interruptible(&info->delta_msr_wait); |
| 2231 | |
| 2232 | if (info->xmit_buf) { |
| 2233 | unsigned char *temp; |
| 2234 | temp = info->xmit_buf; |
| 2235 | info->xmit_buf = NULL; |
| 2236 | free_page((unsigned long)temp); |
| 2237 | } |
| 2238 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2239 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { |
| 2240 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); |
| 2241 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); |
| 2242 | #ifdef CY_DEBUG_DTR |
| 2243 | printk("cyc shutdown dropping DTR\n"); |
| 2244 | printk(" status: 0x%x, 0x%x\n", |
| 2245 | cy_readb(base_addr + (CyMSVR1 << index)), |
| 2246 | cy_readb(base_addr + (CyMSVR2 << index))); |
| 2247 | #endif |
| 2248 | } |
| 2249 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); |
| 2250 | /* it may be appropriate to clear _XMIT at |
| 2251 | some later date (after testing)!!! */ |
| 2252 | |
| 2253 | if (info->tty) { |
| 2254 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2255 | } |
| 2256 | info->flags &= ~ASYNC_INITIALIZED; |
| 2257 | CY_UNLOCK(info, flags); |
| 2258 | } else { |
| 2259 | struct FIRM_ID __iomem *firm_id; |
| 2260 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2261 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2262 | struct CH_CTRL __iomem *ch_ctrl; |
| 2263 | int retval; |
| 2264 | |
| 2265 | base_addr = cy_card[card].base_addr; |
| 2266 | #ifdef CY_DEBUG_OPEN |
| 2267 | printk("cyc shutdown Z card %d, channel %d, base_addr %lx\n", |
| 2268 | card, channel, (long)base_addr); |
| 2269 | #endif |
| 2270 | |
| 2271 | firm_id = base_addr + ID_ADDRESS; |
| 2272 | if (!ISZLOADED(cy_card[card])) { |
| 2273 | return; |
| 2274 | } |
| 2275 | |
| 2276 | zfw_ctrl = cy_card[card].base_addr + |
| 2277 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 2278 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2279 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2280 | |
| 2281 | CY_LOCK(info, flags); |
| 2282 | |
| 2283 | if (info->xmit_buf) { |
| 2284 | unsigned char *temp; |
| 2285 | temp = info->xmit_buf; |
| 2286 | info->xmit_buf = NULL; |
| 2287 | free_page((unsigned long)temp); |
| 2288 | } |
| 2289 | |
| 2290 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { |
| 2291 | cy_writel(&ch_ctrl[channel].rs_control, |
| 2292 | (uclong)(cy_readl(&ch_ctrl[channel].rs_control)& |
| 2293 | ~(C_RS_RTS | C_RS_DTR))); |
| 2294 | retval = cyz_issue_cmd(&cy_card[info->card], channel, |
| 2295 | C_CM_IOCTLM, 0L); |
| 2296 | if (retval != 0) { |
| 2297 | printk("cyc:shutdown retval on ttyC%d was %x\n", |
| 2298 | info->line, retval); |
| 2299 | } |
| 2300 | #ifdef CY_DEBUG_DTR |
| 2301 | printk("cyc:shutdown dropping Z DTR\n"); |
| 2302 | #endif |
| 2303 | } |
| 2304 | |
| 2305 | if (info->tty) { |
| 2306 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2307 | } |
| 2308 | info->flags &= ~ASYNC_INITIALIZED; |
| 2309 | |
| 2310 | CY_UNLOCK(info, flags); |
| 2311 | } |
| 2312 | |
| 2313 | #ifdef CY_DEBUG_OPEN |
| 2314 | printk(" cyc shutdown done\n"); |
| 2315 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2316 | } /* shutdown */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | |
| 2318 | /* |
| 2319 | * ------------------------------------------------------------ |
| 2320 | * cy_open() and friends |
| 2321 | * ------------------------------------------------------------ |
| 2322 | */ |
| 2323 | |
| 2324 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2325 | block_til_ready(struct tty_struct *tty, struct file *filp, |
| 2326 | struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2327 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2328 | DECLARE_WAITQUEUE(wait, current); |
| 2329 | struct cyclades_card *cinfo; |
| 2330 | unsigned long flags; |
| 2331 | int chip, channel, index; |
| 2332 | int retval; |
| 2333 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2334 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2335 | cinfo = &cy_card[info->card]; |
| 2336 | channel = info->line - cinfo->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2337 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2338 | /* |
| 2339 | * If the device is in the middle of being closed, then block |
| 2340 | * until it's done, and then try again. |
| 2341 | */ |
| 2342 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { |
| 2343 | if (info->flags & ASYNC_CLOSING) { |
| 2344 | interruptible_sleep_on(&info->close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | } |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2346 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2347 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2349 | /* |
| 2350 | * If non-blocking mode is set, then make the check up front |
| 2351 | * and then exit. |
| 2352 | */ |
| 2353 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { |
| 2354 | info->flags |= ASYNC_NORMAL_ACTIVE; |
| 2355 | return 0; |
| 2356 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2357 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2358 | /* |
| 2359 | * Block waiting for the carrier detect and the line to become |
| 2360 | * free (i.e., not in use by the callout). While we are in |
| 2361 | * this loop, info->count is dropped by one, so that |
| 2362 | * cy_close() knows when to free things. We restore it upon |
| 2363 | * exit, either normal or abnormal. |
| 2364 | */ |
| 2365 | retval = 0; |
| 2366 | add_wait_queue(&info->open_wait, &wait); |
| 2367 | #ifdef CY_DEBUG_OPEN |
| 2368 | printk("cyc block_til_ready before block: ttyC%d, count = %d\n", |
| 2369 | info->line, info->count); |
| 2370 | /**/ |
| 2371 | #endif |
| 2372 | CY_LOCK(info, flags); |
| 2373 | if (!tty_hung_up_p(filp)) |
| 2374 | info->count--; |
| 2375 | CY_UNLOCK(info, flags); |
| 2376 | #ifdef CY_DEBUG_COUNT |
| 2377 | printk("cyc block_til_ready: (%d): decrementing count to %d\n", |
| 2378 | current->pid, info->count); |
| 2379 | #endif |
| 2380 | info->blocked_open++; |
| 2381 | |
| 2382 | if (!IS_CYC_Z(*cinfo)) { |
| 2383 | chip = channel >> 2; |
| 2384 | channel &= 0x03; |
| 2385 | index = cinfo->bus_index; |
| 2386 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
| 2387 | |
| 2388 | while (1) { |
| 2389 | CY_LOCK(info, flags); |
| 2390 | if ((tty->termios->c_cflag & CBAUD)) { |
| 2391 | cy_writeb(base_addr + (CyCAR << index), |
| 2392 | (u_char) channel); |
| 2393 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 2394 | CyRTS); |
| 2395 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 2396 | CyDTR); |
| 2397 | #ifdef CY_DEBUG_DTR |
| 2398 | printk("cyc:block_til_ready raising DTR\n"); |
| 2399 | printk(" status: 0x%x, 0x%x\n", |
| 2400 | cy_readb(base_addr + |
| 2401 | (CyMSVR1 << index)), |
| 2402 | cy_readb(base_addr + |
| 2403 | (CyMSVR2 << index))); |
| 2404 | #endif |
| 2405 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2406 | CY_UNLOCK(info, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2407 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2408 | set_current_state(TASK_INTERRUPTIBLE); |
| 2409 | if (tty_hung_up_p(filp) || |
| 2410 | !(info->flags & ASYNC_INITIALIZED)) { |
| 2411 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? |
| 2412 | -EAGAIN : -ERESTARTSYS); |
| 2413 | break; |
| 2414 | } |
| 2415 | |
| 2416 | CY_LOCK(info, flags); |
| 2417 | cy_writeb(base_addr + (CyCAR << index), |
| 2418 | (u_char) channel); |
| 2419 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || |
| 2420 | (cy_readb(base_addr + |
| 2421 | (CyMSVR1 << index)) & CyDCD))) { |
| 2422 | CY_UNLOCK(info, flags); |
| 2423 | break; |
| 2424 | } |
| 2425 | CY_UNLOCK(info, flags); |
| 2426 | |
| 2427 | if (signal_pending(current)) { |
| 2428 | retval = -ERESTARTSYS; |
| 2429 | break; |
| 2430 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2431 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2432 | printk("cyc block_til_ready blocking: ttyC%d, " |
| 2433 | "count = %d\n", |
| 2434 | info->line, info->count); |
| 2435 | /**/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2437 | schedule(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2438 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2439 | } else { |
| 2440 | struct FIRM_ID __iomem *firm_id; |
| 2441 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2442 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2443 | struct CH_CTRL __iomem *ch_ctrl; |
| 2444 | int retval; |
| 2445 | |
| 2446 | base_addr = cinfo->base_addr; |
| 2447 | firm_id = base_addr + ID_ADDRESS; |
| 2448 | if (!ISZLOADED(*cinfo)) { |
| 2449 | current->state = TASK_RUNNING; |
| 2450 | remove_wait_queue(&info->open_wait, &wait); |
| 2451 | return -EINVAL; |
| 2452 | } |
| 2453 | |
| 2454 | zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & |
| 2455 | 0xfffff); |
| 2456 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2457 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2458 | |
| 2459 | while (1) { |
| 2460 | if ((tty->termios->c_cflag & CBAUD)) { |
| 2461 | cy_writel(&ch_ctrl[channel].rs_control, |
| 2462 | cy_readl(&ch_ctrl[channel]. |
| 2463 | rs_control) | (C_RS_RTS | |
| 2464 | C_RS_DTR)); |
| 2465 | retval = cyz_issue_cmd(&cy_card[info->card], |
| 2466 | channel, C_CM_IOCTLM, 0L); |
| 2467 | if (retval != 0) { |
| 2468 | printk("cyc:block_til_ready retval on " |
| 2469 | "ttyC%d was %x\n", |
| 2470 | info->line, retval); |
| 2471 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2473 | printk("cyc:block_til_ready raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2474 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2475 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2476 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2477 | set_current_state(TASK_INTERRUPTIBLE); |
| 2478 | if (tty_hung_up_p(filp) || |
| 2479 | !(info->flags & ASYNC_INITIALIZED)) { |
| 2480 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? |
| 2481 | -EAGAIN : -ERESTARTSYS); |
| 2482 | break; |
| 2483 | } |
| 2484 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || |
| 2485 | (cy_readl(&ch_ctrl[channel].rs_status) & |
| 2486 | C_RS_DCD))) { |
| 2487 | break; |
| 2488 | } |
| 2489 | if (signal_pending(current)) { |
| 2490 | retval = -ERESTARTSYS; |
| 2491 | break; |
| 2492 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2493 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2494 | printk("cyc block_til_ready blocking: ttyC%d, " |
| 2495 | "count = %d\n", |
| 2496 | info->line, info->count); |
| 2497 | /**/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2498 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2499 | schedule(); |
| 2500 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2502 | current->state = TASK_RUNNING; |
| 2503 | remove_wait_queue(&info->open_wait, &wait); |
| 2504 | if (!tty_hung_up_p(filp)) { |
| 2505 | info->count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2506 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2507 | printk("cyc:block_til_ready (%d): incrementing count to %d\n", |
| 2508 | current->pid, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2510 | } |
| 2511 | info->blocked_open--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2513 | printk("cyc:block_til_ready after blocking: ttyC%d, count = %d\n", |
| 2514 | info->line, info->count); |
| 2515 | /**/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2517 | if (retval) |
| 2518 | return retval; |
| 2519 | info->flags |= ASYNC_NORMAL_ACTIVE; |
| 2520 | return 0; |
| 2521 | } /* block_til_ready */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2522 | |
| 2523 | /* |
| 2524 | * This routine is called whenever a serial port is opened. It |
| 2525 | * performs the serial-specific initialization for the tty structure. |
| 2526 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2527 | static int cy_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2528 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2529 | struct cyclades_port *info; |
| 2530 | int retval, line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2531 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2532 | line = tty->index; |
| 2533 | if ((line < 0) || (NR_PORTS <= line)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2534 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2535 | } |
| 2536 | info = &cy_port[line]; |
| 2537 | if (info->line < 0) { |
| 2538 | return -ENODEV; |
| 2539 | } |
| 2540 | |
| 2541 | /* If the card's firmware hasn't been loaded, |
| 2542 | treat it as absent from the system. This |
| 2543 | will make the user pay attention. |
| 2544 | */ |
| 2545 | if (IS_CYC_Z(cy_card[info->card])) { |
| 2546 | struct cyclades_card *cinfo = &cy_card[info->card]; |
| 2547 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
| 2548 | |
| 2549 | if (!ISZLOADED(*cinfo)) { |
| 2550 | if (((ZE_V1 == cy_readl( |
| 2551 | &((struct RUNTIME_9060 __iomem *) |
| 2552 | (cinfo->ctl_addr))->mail_box_0)) && |
| 2553 | Z_FPGA_CHECK(*cinfo)) && |
| 2554 | (ZFIRM_HLT == cy_readl( |
| 2555 | &firm_id->signature))) { |
| 2556 | printk("cyc:Cyclades-Z Error: you need an " |
| 2557 | "external power supply for this number " |
| 2558 | "of ports.\n\rFirmware halted.\r\n"); |
| 2559 | } else { |
| 2560 | printk("cyc:Cyclades-Z firmware not yet " |
| 2561 | "loaded\n"); |
| 2562 | } |
| 2563 | return -ENODEV; |
| 2564 | } |
| 2565 | #ifdef CONFIG_CYZ_INTR |
| 2566 | else { |
| 2567 | /* In case this Z board is operating in interrupt mode, its |
| 2568 | interrupts should be enabled as soon as the first open |
| 2569 | happens to one of its ports. */ |
| 2570 | if (!cinfo->intr_enabled) { |
| 2571 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2572 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2573 | |
| 2574 | zfw_ctrl = cinfo->base_addr + |
| 2575 | (cy_readl(&firm_id->zfwctrl_addr) & |
| 2576 | 0xfffff); |
| 2577 | |
| 2578 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2579 | |
| 2580 | /* Enable interrupts on the PLX chip */ |
| 2581 | cy_writew(cinfo->ctl_addr + 0x68, |
| 2582 | cy_readw(cinfo->ctl_addr + |
| 2583 | 0x68) | 0x0900); |
| 2584 | /* Enable interrupts on the FW */ |
| 2585 | retval = cyz_issue_cmd(cinfo, 0, |
| 2586 | C_CM_IRQ_ENBL, 0L); |
| 2587 | if (retval != 0) { |
| 2588 | printk("cyc:IRQ enable retval was %x\n", |
| 2589 | retval); |
| 2590 | } |
| 2591 | cinfo->nports = |
| 2592 | (int)cy_readl(&board_ctrl->n_channel); |
| 2593 | cinfo->intr_enabled = 1; |
| 2594 | } |
| 2595 | } |
| 2596 | #endif /* CONFIG_CYZ_INTR */ |
| 2597 | /* Make sure this Z port really exists in hardware */ |
| 2598 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) |
| 2599 | return -ENODEV; |
| 2600 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2601 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2602 | printk("cyc:cy_open ttyC%d\n", info->line); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2604 | tty->driver_data = info; |
| 2605 | info->tty = tty; |
| 2606 | if (serial_paranoia_check(info, tty->name, "cy_open")) { |
| 2607 | return -ENODEV; |
| 2608 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2609 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2610 | printk("cyc:cy_open ttyC%d, count = %d\n", info->line, info->count); |
| 2611 | /**/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2612 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2613 | info->count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2614 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2615 | printk("cyc:cy_open (%d): incrementing count to %d\n", |
| 2616 | current->pid, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2619 | /* |
| 2620 | * If the port is the middle of closing, bail out now |
| 2621 | */ |
| 2622 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { |
| 2623 | if (info->flags & ASYNC_CLOSING) |
| 2624 | interruptible_sleep_on(&info->close_wait); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2625 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2627 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2628 | /* |
| 2629 | * Start up serial port |
| 2630 | */ |
| 2631 | retval = startup(info); |
| 2632 | if (retval) { |
| 2633 | return retval; |
| 2634 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2636 | retval = block_til_ready(tty, filp, info); |
| 2637 | if (retval) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2638 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2639 | printk("cyc:cy_open returning after block_til_ready with %d\n", |
| 2640 | retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2642 | return retval; |
| 2643 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2645 | info->throttle = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2646 | |
| 2647 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2648 | printk(" cyc:cy_open done\n"); |
| 2649 | /**/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2651 | return 0; |
| 2652 | } /* cy_open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | |
| 2654 | /* |
| 2655 | * cy_wait_until_sent() --- wait until the transmitter is empty |
| 2656 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2657 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2659 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 2660 | void __iomem *base_addr; |
| 2661 | int card, chip, channel, index; |
| 2662 | unsigned long orig_jiffies; |
| 2663 | int char_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2665 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) |
| 2666 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2668 | if (info->xmit_fifo_size == 0) |
| 2669 | return; /* Just in case.... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2670 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2671 | orig_jiffies = jiffies; |
| 2672 | /* |
| 2673 | * Set the check interval to be 1/5 of the estimated time to |
| 2674 | * send a single character, and make it at least 1. The check |
| 2675 | * interval should also be less than the timeout. |
| 2676 | * |
| 2677 | * Note: we have to use pretty tight timings here to satisfy |
| 2678 | * the NIST-PCTS. |
| 2679 | */ |
| 2680 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; |
| 2681 | char_time = char_time / 5; |
| 2682 | if (char_time <= 0) |
| 2683 | char_time = 1; |
| 2684 | if (timeout < 0) |
| 2685 | timeout = 0; |
| 2686 | if (timeout) |
| 2687 | char_time = min(char_time, timeout); |
| 2688 | /* |
| 2689 | * If the transmitter hasn't cleared in twice the approximate |
| 2690 | * amount of time to send the entire FIFO, it probably won't |
| 2691 | * ever clear. This assumes the UART isn't doing flow |
| 2692 | * control, which is currently the case. Hence, if it ever |
| 2693 | * takes longer than info->timeout, this is probably due to a |
| 2694 | * UART bug of some kind. So, we clamp the timeout parameter at |
| 2695 | * 2*info->timeout. |
| 2696 | */ |
| 2697 | if (!timeout || timeout > 2 * info->timeout) |
| 2698 | timeout = 2 * info->timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2700 | printk("In cy_wait_until_sent(%d) check=%lu...", timeout, char_time); |
| 2701 | printk("jiff=%lu...", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2703 | card = info->card; |
| 2704 | channel = (info->line) - (cy_card[card].first_line); |
| 2705 | if (!IS_CYC_Z(cy_card[card])) { |
| 2706 | chip = channel >> 2; |
| 2707 | channel &= 0x03; |
| 2708 | index = cy_card[card].bus_index; |
| 2709 | base_addr = |
| 2710 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
| 2711 | while (cy_readb(base_addr + (CySRER << index)) & CyTxRdy) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2712 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2713 | printk("Not clean (jiff=%lu)...", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2714 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2715 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
| 2716 | break; |
| 2717 | if (timeout && time_after(jiffies, orig_jiffies + |
| 2718 | timeout)) |
| 2719 | break; |
| 2720 | } |
| 2721 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2722 | /* Nothing to do! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2723 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2724 | /* Run one more char cycle */ |
| 2725 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2726 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2727 | printk("Clean (jiff=%lu)...done\n", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | #endif |
| 2729 | } |
| 2730 | |
| 2731 | /* |
| 2732 | * This routine is called when a particular tty device is closed. |
| 2733 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2734 | static void cy_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2735 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2736 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 2737 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2738 | |
| 2739 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2740 | printk("cyc:cy_close ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2741 | #endif |
| 2742 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2743 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { |
| 2744 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2745 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2746 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2747 | CY_LOCK(info, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2748 | /* If the TTY is being hung up, nothing to do */ |
| 2749 | if (tty_hung_up_p(filp)) { |
| 2750 | CY_UNLOCK(info, flags); |
| 2751 | return; |
| 2752 | } |
| 2753 | #ifdef CY_DEBUG_OPEN |
| 2754 | printk("cyc:cy_close ttyC%d, count = %d\n", info->line, info->count); |
| 2755 | #endif |
| 2756 | if ((tty->count == 1) && (info->count != 1)) { |
| 2757 | /* |
| 2758 | * Uh, oh. tty->count is 1, which means that the tty |
| 2759 | * structure will be freed. Info->count should always |
| 2760 | * be one in these conditions. If it's greater than |
| 2761 | * one, we've got real problems, since it means the |
| 2762 | * serial port won't be shutdown. |
| 2763 | */ |
| 2764 | printk("cyc:cy_close: bad serial port count; tty->count is 1, " |
| 2765 | "info->count is %d\n", info->count); |
| 2766 | info->count = 1; |
| 2767 | } |
| 2768 | #ifdef CY_DEBUG_COUNT |
| 2769 | printk("cyc:cy_close at (%d): decrementing count to %d\n", |
| 2770 | current->pid, info->count - 1); |
| 2771 | #endif |
| 2772 | if (--info->count < 0) { |
| 2773 | #ifdef CY_DEBUG_COUNT |
| 2774 | printk("cyc:cyc_close setting count to 0\n"); |
| 2775 | #endif |
| 2776 | info->count = 0; |
| 2777 | } |
| 2778 | if (info->count) { |
| 2779 | CY_UNLOCK(info, flags); |
| 2780 | return; |
| 2781 | } |
| 2782 | info->flags |= ASYNC_CLOSING; |
| 2783 | |
| 2784 | /* |
| 2785 | * Now we wait for the transmit buffer to clear; and we notify |
| 2786 | * the line discipline to only process XON/XOFF characters. |
| 2787 | */ |
| 2788 | tty->closing = 1; |
| 2789 | CY_UNLOCK(info, flags); |
| 2790 | if (info->closing_wait != CY_CLOSING_WAIT_NONE) { |
| 2791 | tty_wait_until_sent(tty, info->closing_wait); |
| 2792 | } |
| 2793 | CY_LOCK(info, flags); |
| 2794 | |
| 2795 | if (!IS_CYC_Z(cy_card[info->card])) { |
| 2796 | int channel = info->line - cy_card[info->card].first_line; |
| 2797 | int index = cy_card[info->card].bus_index; |
| 2798 | void __iomem *base_addr = cy_card[info->card].base_addr + |
| 2799 | (cy_chip_offset[channel >> 2] << index); |
| 2800 | /* Stop accepting input */ |
| 2801 | channel &= 0x03; |
| 2802 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2803 | cy_writeb(base_addr + (CySRER << index), |
| 2804 | cy_readb(base_addr + (CySRER << index)) & ~CyRxData); |
| 2805 | if (info->flags & ASYNC_INITIALIZED) { |
| 2806 | /* Waiting for on-board buffers to be empty before closing |
| 2807 | the port */ |
| 2808 | CY_UNLOCK(info, flags); |
| 2809 | cy_wait_until_sent(tty, info->timeout); |
| 2810 | CY_LOCK(info, flags); |
| 2811 | } |
| 2812 | } else { |
| 2813 | #ifdef Z_WAKE |
| 2814 | /* Waiting for on-board buffers to be empty before closing the port */ |
| 2815 | void __iomem *base_addr = cy_card[info->card].base_addr; |
| 2816 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; |
| 2817 | struct ZFW_CTRL __iomem *zfw_ctrl = |
| 2818 | base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 2819 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2820 | int channel = info->line - cy_card[info->card].first_line; |
| 2821 | int retval; |
| 2822 | |
| 2823 | if (cy_readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { |
| 2824 | retval = cyz_issue_cmd(&cy_card[info->card], channel, |
| 2825 | C_CM_IOCTLW, 0L); |
| 2826 | if (retval != 0) { |
| 2827 | printk("cyc:cy_close retval on ttyC%d was %x\n", |
| 2828 | info->line, retval); |
| 2829 | } |
| 2830 | CY_UNLOCK(info, flags); |
| 2831 | interruptible_sleep_on(&info->shutdown_wait); |
| 2832 | CY_LOCK(info, flags); |
| 2833 | } |
| 2834 | #endif |
| 2835 | } |
| 2836 | |
| 2837 | CY_UNLOCK(info, flags); |
| 2838 | shutdown(info); |
| 2839 | if (tty->driver->flush_buffer) |
| 2840 | tty->driver->flush_buffer(tty); |
| 2841 | tty_ldisc_flush(tty); |
| 2842 | CY_LOCK(info, flags); |
| 2843 | |
| 2844 | tty->closing = 0; |
| 2845 | info->event = 0; |
| 2846 | info->tty = NULL; |
| 2847 | if (info->blocked_open) { |
| 2848 | CY_UNLOCK(info, flags); |
| 2849 | if (info->close_delay) { |
| 2850 | msleep_interruptible(jiffies_to_msecs |
| 2851 | (info->close_delay)); |
| 2852 | } |
| 2853 | wake_up_interruptible(&info->open_wait); |
| 2854 | CY_LOCK(info, flags); |
| 2855 | } |
| 2856 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
| 2857 | wake_up_interruptible(&info->close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | |
| 2859 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2860 | printk(" cyc:cy_close done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2861 | #endif |
| 2862 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2863 | CY_UNLOCK(info, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2864 | } /* cy_close */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2865 | |
| 2866 | /* This routine gets called when tty_write has put something into |
| 2867 | * the write_queue. The characters may come from user space or |
| 2868 | * kernel space. |
| 2869 | * |
| 2870 | * This routine will return the number of characters actually |
| 2871 | * accepted for writing. |
| 2872 | * |
| 2873 | * If the port is not already transmitting stuff, start it off by |
| 2874 | * enabling interrupts. The interrupt service routine will then |
| 2875 | * ensure that the characters are sent. |
| 2876 | * If the port is already active, there is no need to kick it. |
| 2877 | * |
| 2878 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2879 | static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2880 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2881 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 2882 | unsigned long flags; |
| 2883 | int c, ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2884 | |
| 2885 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2886 | printk("cyc:cy_write ttyC%d\n", info->line); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2887 | #endif |
| 2888 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2889 | if (serial_paranoia_check(info, tty->name, "cy_write")) { |
| 2890 | return 0; |
| 2891 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2892 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2893 | if (!info->xmit_buf) |
| 2894 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2895 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2896 | CY_LOCK(info, flags); |
| 2897 | while (1) { |
| 2898 | c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), |
| 2899 | (int)(SERIAL_XMIT_SIZE - info->xmit_head))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2900 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2901 | if (c <= 0) |
| 2902 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2904 | memcpy(info->xmit_buf + info->xmit_head, buf, c); |
| 2905 | info->xmit_head = (info->xmit_head + c) & |
| 2906 | (SERIAL_XMIT_SIZE - 1); |
| 2907 | info->xmit_cnt += c; |
| 2908 | buf += c; |
| 2909 | count -= c; |
| 2910 | ret += c; |
| 2911 | } |
| 2912 | CY_UNLOCK(info, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2914 | info->idle_stats.xmit_bytes += ret; |
| 2915 | info->idle_stats.xmit_idle = jiffies; |
| 2916 | |
| 2917 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { |
| 2918 | start_xmit(info); |
| 2919 | } |
| 2920 | return ret; |
| 2921 | } /* cy_write */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2922 | |
| 2923 | /* |
| 2924 | * This routine is called by the kernel to write a single |
| 2925 | * character to the tty device. If the kernel uses this routine, |
| 2926 | * it must call the flush_chars() routine (if defined) when it is |
| 2927 | * done stuffing characters into the driver. If there is no room |
| 2928 | * in the queue, the character is ignored. |
| 2929 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2930 | static void cy_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2932 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 2933 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2934 | |
| 2935 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2936 | printk("cyc:cy_put_char ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2937 | #endif |
| 2938 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2939 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
| 2940 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2941 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2942 | if (!info->xmit_buf) |
| 2943 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2944 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2945 | CY_LOCK(info, flags); |
Jiri Slaby | 90cc301 | 2006-12-08 02:39:31 -0800 | [diff] [blame] | 2946 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2947 | CY_UNLOCK(info, flags); |
| 2948 | return; |
| 2949 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2951 | info->xmit_buf[info->xmit_head++] = ch; |
| 2952 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
| 2953 | info->xmit_cnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2954 | info->idle_stats.xmit_bytes++; |
| 2955 | info->idle_stats.xmit_idle = jiffies; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2956 | CY_UNLOCK(info, flags); |
| 2957 | } /* cy_put_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2958 | |
| 2959 | /* |
| 2960 | * This routine is called by the kernel after it has written a |
| 2961 | * series of characters to the tty device using put_char(). |
| 2962 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2963 | static void cy_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2965 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 2966 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2967 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2968 | printk("cyc:cy_flush_chars ttyC%d\n", info->line); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2969 | #endif |
| 2970 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2971 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
| 2972 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2973 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2974 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
| 2975 | !info->xmit_buf) |
| 2976 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2977 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2978 | start_xmit(info); |
| 2979 | } /* cy_flush_chars */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2980 | |
| 2981 | /* |
| 2982 | * This routine returns the numbers of characters the tty driver |
| 2983 | * will accept for queuing to be written. This number is subject |
| 2984 | * to change as output buffers get emptied, or if the output flow |
| 2985 | * control is activated. |
| 2986 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2987 | static int cy_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2988 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2989 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 2990 | int ret; |
| 2991 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2992 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2993 | printk("cyc:cy_write_room ttyC%d\n", info->line); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | #endif |
| 2995 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2996 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
| 2997 | return 0; |
| 2998 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; |
| 2999 | if (ret < 0) |
| 3000 | ret = 0; |
| 3001 | return ret; |
| 3002 | } /* cy_write_room */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3003 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3004 | static int cy_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3005 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3006 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 3007 | int card, channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3008 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3009 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
| 3010 | return 0; |
| 3011 | |
| 3012 | card = info->card; |
| 3013 | channel = (info->line) - (cy_card[card].first_line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3014 | |
| 3015 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3016 | if (!IS_CYC_Z(cy_card[card])) { |
| 3017 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3018 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3019 | printk("cyc:cy_chars_in_buffer ttyC%d %d\n", info->line, info->xmit_cnt); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3020 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3021 | return info->xmit_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3022 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3023 | } else { |
| 3024 | static volatile struct FIRM_ID *firm_id; |
| 3025 | static volatile struct ZFW_CTRL *zfw_ctrl; |
| 3026 | static volatile struct CH_CTRL *ch_ctrl; |
| 3027 | static volatile struct BUF_CTRL *buf_ctrl; |
| 3028 | int char_count; |
| 3029 | volatile uclong tx_put, tx_get, tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3030 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3031 | firm_id = cy_card[card].base_addr + ID_ADDRESS; |
| 3032 | zfw_ctrl = cy_card[card].base_addr + |
| 3033 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 3034 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
| 3035 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3036 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3037 | tx_get = cy_readl(&buf_ctrl->tx_get); |
| 3038 | tx_put = cy_readl(&buf_ctrl->tx_put); |
| 3039 | tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize); |
| 3040 | if (tx_put >= tx_get) |
| 3041 | char_count = tx_put - tx_get; |
| 3042 | else |
| 3043 | char_count = tx_put - tx_get + tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3044 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3045 | printk("cyc:cy_chars_in_buffer ttyC%d %d\n", info->line, info->xmit_cnt + char_count); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3046 | #endif |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3047 | return info->xmit_cnt + char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3048 | } |
| 3049 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
| 3050 | } /* cy_chars_in_buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3051 | |
| 3052 | /* |
| 3053 | * ------------------------------------------------------------ |
| 3054 | * cy_ioctl() and friends |
| 3055 | * ------------------------------------------------------------ |
| 3056 | */ |
| 3057 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3058 | static void cyy_baud_calc(struct cyclades_port *info, uclong baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3060 | int co, co_val, bpr; |
| 3061 | uclong cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
| 3062 | 25000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3064 | if (baud == 0) { |
| 3065 | info->tbpr = info->tco = info->rbpr = info->rco = 0; |
| 3066 | return; |
| 3067 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3069 | /* determine which prescaler to use */ |
| 3070 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { |
| 3071 | if (cy_clock / co_val / baud > 63) |
| 3072 | break; |
| 3073 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3074 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3075 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
| 3076 | if (bpr > 255) |
| 3077 | bpr = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3078 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3079 | info->tbpr = info->rbpr = bpr; |
| 3080 | info->tco = info->rco = co; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3081 | } |
| 3082 | |
| 3083 | /* |
| 3084 | * This routine finds or computes the various line characteristics. |
| 3085 | * It used to be called config_setup |
| 3086 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3087 | static void set_line_char(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3088 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3089 | unsigned long flags; |
| 3090 | void __iomem *base_addr; |
| 3091 | int card, chip, channel, index; |
| 3092 | unsigned cflag, iflag; |
| 3093 | unsigned short chip_number; |
| 3094 | int baud, baud_rate = 0; |
| 3095 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3096 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3097 | if (!info->tty || !info->tty->termios) { |
| 3098 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3099 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3100 | if (info->line == -1) { |
| 3101 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3102 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3103 | cflag = info->tty->termios->c_cflag; |
| 3104 | iflag = info->tty->termios->c_iflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3105 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3106 | /* |
| 3107 | * Set up the tty->alt_speed kludge |
| 3108 | */ |
| 3109 | if (info->tty) { |
| 3110 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
| 3111 | info->tty->alt_speed = 57600; |
| 3112 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
| 3113 | info->tty->alt_speed = 115200; |
| 3114 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| 3115 | info->tty->alt_speed = 230400; |
| 3116 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| 3117 | info->tty->alt_speed = 460800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3118 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3119 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3120 | card = info->card; |
| 3121 | channel = (info->line) - (cy_card[card].first_line); |
| 3122 | chip_number = channel / 4; |
| 3123 | |
| 3124 | if (!IS_CYC_Z(cy_card[card])) { |
| 3125 | |
| 3126 | index = cy_card[card].bus_index; |
| 3127 | |
| 3128 | /* baud rate */ |
| 3129 | baud = tty_get_baud_rate(info->tty); |
| 3130 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3131 | ASYNC_SPD_CUST) { |
| 3132 | if (info->custom_divisor) |
| 3133 | baud_rate = info->baud / info->custom_divisor; |
| 3134 | else |
| 3135 | baud_rate = info->baud; |
| 3136 | } else if (baud > CD1400_MAX_SPEED) { |
| 3137 | baud = CD1400_MAX_SPEED; |
| 3138 | } |
| 3139 | /* find the baud index */ |
| 3140 | for (i = 0; i < 20; i++) { |
| 3141 | if (baud == baud_table[i]) { |
| 3142 | break; |
| 3143 | } |
| 3144 | } |
| 3145 | if (i == 20) { |
| 3146 | i = 19; /* CD1400_MAX_SPEED */ |
| 3147 | } |
| 3148 | |
| 3149 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3150 | ASYNC_SPD_CUST) { |
| 3151 | cyy_baud_calc(info, baud_rate); |
| 3152 | } else { |
| 3153 | if (info->chip_rev >= CD1400_REV_J) { |
| 3154 | /* It is a CD1400 rev. J or later */ |
| 3155 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ |
| 3156 | info->tco = baud_co_60[i]; /* Tx CO */ |
| 3157 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ |
| 3158 | info->rco = baud_co_60[i]; /* Rx CO */ |
| 3159 | } else { |
| 3160 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ |
| 3161 | info->tco = baud_co_25[i]; /* Tx CO */ |
| 3162 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ |
| 3163 | info->rco = baud_co_25[i]; /* Rx CO */ |
| 3164 | } |
| 3165 | } |
| 3166 | if (baud_table[i] == 134) { |
| 3167 | /* get it right for 134.5 baud */ |
| 3168 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 3169 | 2; |
| 3170 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3171 | ASYNC_SPD_CUST) { |
| 3172 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3173 | baud_rate) + 2; |
| 3174 | } else if (baud_table[i]) { |
| 3175 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3176 | baud_table[i]) + 2; |
| 3177 | /* this needs to be propagated into the card info */ |
| 3178 | } else { |
| 3179 | info->timeout = 0; |
| 3180 | } |
| 3181 | /* By tradition (is it a standard?) a baud rate of zero |
| 3182 | implies the line should be/has been closed. A bit |
| 3183 | later in this routine such a test is performed. */ |
| 3184 | |
| 3185 | /* byte size and parity */ |
| 3186 | info->cor5 = 0; |
| 3187 | info->cor4 = 0; |
| 3188 | /* receive threshold */ |
| 3189 | info->cor3 = (info->default_threshold ? |
| 3190 | info->default_threshold : baud_cor3[i]); |
| 3191 | info->cor2 = CyETC; |
| 3192 | switch (cflag & CSIZE) { |
| 3193 | case CS5: |
| 3194 | info->cor1 = Cy_5_BITS; |
| 3195 | break; |
| 3196 | case CS6: |
| 3197 | info->cor1 = Cy_6_BITS; |
| 3198 | break; |
| 3199 | case CS7: |
| 3200 | info->cor1 = Cy_7_BITS; |
| 3201 | break; |
| 3202 | case CS8: |
| 3203 | info->cor1 = Cy_8_BITS; |
| 3204 | break; |
| 3205 | } |
| 3206 | if (cflag & CSTOPB) { |
| 3207 | info->cor1 |= Cy_2_STOP; |
| 3208 | } |
| 3209 | if (cflag & PARENB) { |
| 3210 | if (cflag & PARODD) { |
| 3211 | info->cor1 |= CyPARITY_O; |
| 3212 | } else { |
| 3213 | info->cor1 |= CyPARITY_E; |
| 3214 | } |
| 3215 | } else { |
| 3216 | info->cor1 |= CyPARITY_NONE; |
| 3217 | } |
| 3218 | |
| 3219 | /* CTS flow control flag */ |
| 3220 | if (cflag & CRTSCTS) { |
| 3221 | info->flags |= ASYNC_CTS_FLOW; |
| 3222 | info->cor2 |= CyCtsAE; |
| 3223 | } else { |
| 3224 | info->flags &= ~ASYNC_CTS_FLOW; |
| 3225 | info->cor2 &= ~CyCtsAE; |
| 3226 | } |
| 3227 | if (cflag & CLOCAL) |
| 3228 | info->flags &= ~ASYNC_CHECK_CD; |
| 3229 | else |
| 3230 | info->flags |= ASYNC_CHECK_CD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3231 | |
| 3232 | /*********************************************** |
| 3233 | The hardware option, CyRtsAO, presents RTS when |
| 3234 | the chip has characters to send. Since most modems |
| 3235 | use RTS as reverse (inbound) flow control, this |
| 3236 | option is not used. If inbound flow control is |
| 3237 | necessary, DTR can be programmed to provide the |
| 3238 | appropriate signals for use with a non-standard |
| 3239 | cable. Contact Marcio Saito for details. |
| 3240 | ***********************************************/ |
| 3241 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3242 | chip = channel >> 2; |
| 3243 | channel &= 0x03; |
| 3244 | base_addr = cy_card[card].base_addr + |
| 3245 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3246 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3247 | CY_LOCK(info, flags); |
| 3248 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3249 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3250 | /* tx and rx baud rate */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3251 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3252 | cy_writeb(base_addr + (CyTCOR << index), info->tco); |
| 3253 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); |
| 3254 | cy_writeb(base_addr + (CyRCOR << index), info->rco); |
| 3255 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3256 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3257 | /* set line characteristics according configuration */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3258 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3259 | cy_writeb(base_addr + (CySCHR1 << index), |
| 3260 | START_CHAR(info->tty)); |
| 3261 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->tty)); |
| 3262 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); |
| 3263 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); |
| 3264 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
| 3265 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); |
| 3266 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3267 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3268 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
| 3269 | CyCOR3ch, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3270 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3271 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); /* !!! Is this needed? */ |
| 3272 | cy_writeb(base_addr + (CyRTPR << index), |
| 3273 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 3274 | /* 10ms rx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3275 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3276 | if (C_CLOCAL(info->tty)) { |
| 3277 | /* without modem intr */ |
| 3278 | cy_writeb(base_addr + (CySRER << index), |
| 3279 | cy_readb(base_addr + |
| 3280 | (CySRER << index)) | CyMdmCh); |
| 3281 | /* act on 1->0 modem transitions */ |
| 3282 | if ((cflag & CRTSCTS) && info->rflow) { |
| 3283 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3284 | (CyCTS | rflow_thr[i])); |
| 3285 | } else { |
| 3286 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3287 | CyCTS); |
| 3288 | } |
| 3289 | /* act on 0->1 modem transitions */ |
| 3290 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3291 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3292 | /* without modem intr */ |
| 3293 | cy_writeb(base_addr + (CySRER << index), |
| 3294 | cy_readb(base_addr + |
| 3295 | (CySRER << index)) | CyMdmCh); |
| 3296 | /* act on 1->0 modem transitions */ |
| 3297 | if ((cflag & CRTSCTS) && info->rflow) { |
| 3298 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3299 | (CyDSR | CyCTS | CyRI | CyDCD | |
| 3300 | rflow_thr[i])); |
| 3301 | } else { |
| 3302 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3303 | CyDSR | CyCTS | CyRI | CyDCD); |
| 3304 | } |
| 3305 | /* act on 0->1 modem transitions */ |
| 3306 | cy_writeb(base_addr + (CyMCOR2 << index), |
| 3307 | CyDSR | CyCTS | CyRI | CyDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3308 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3309 | |
| 3310 | if (i == 0) { /* baud rate is zero, turn off line */ |
| 3311 | if (info->rtsdtr_inv) { |
| 3312 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3313 | ~CyRTS); |
| 3314 | } else { |
| 3315 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3316 | ~CyDTR); |
| 3317 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3318 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3319 | printk("cyc:set_line_char dropping DTR\n"); |
| 3320 | printk(" status: 0x%x, 0x%x\n", |
| 3321 | cy_readb(base_addr + (CyMSVR1 << index)), |
| 3322 | cy_readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3323 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3324 | } else { |
| 3325 | if (info->rtsdtr_inv) { |
| 3326 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3327 | CyRTS); |
| 3328 | } else { |
| 3329 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3330 | CyDTR); |
| 3331 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3332 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3333 | printk("cyc:set_line_char raising DTR\n"); |
| 3334 | printk(" status: 0x%x, 0x%x\n", |
| 3335 | cy_readb(base_addr + (CyMSVR1 << index)), |
| 3336 | cy_readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3337 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3338 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3339 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3340 | if (info->tty) { |
| 3341 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 3342 | } |
| 3343 | CY_UNLOCK(info, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3345 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3346 | struct FIRM_ID __iomem *firm_id; |
| 3347 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3348 | struct BOARD_CTRL __iomem *board_ctrl; |
| 3349 | struct CH_CTRL __iomem *ch_ctrl; |
| 3350 | struct BUF_CTRL __iomem *buf_ctrl; |
| 3351 | uclong sw_flow; |
| 3352 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3353 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3354 | firm_id = cy_card[card].base_addr + ID_ADDRESS; |
| 3355 | if (!ISZLOADED(cy_card[card])) { |
| 3356 | return; |
| 3357 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3358 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3359 | zfw_ctrl = cy_card[card].base_addr + |
| 3360 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 3361 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 3362 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
| 3363 | buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3364 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3365 | /* baud rate */ |
| 3366 | baud = tty_get_baud_rate(info->tty); |
| 3367 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3368 | ASYNC_SPD_CUST) { |
| 3369 | if (info->custom_divisor) |
| 3370 | baud_rate = info->baud / info->custom_divisor; |
| 3371 | else |
| 3372 | baud_rate = info->baud; |
| 3373 | } else if (baud > CYZ_MAX_SPEED) { |
| 3374 | baud = CYZ_MAX_SPEED; |
| 3375 | } |
| 3376 | cy_writel(&ch_ctrl->comm_baud, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3377 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3378 | if (baud == 134) { |
| 3379 | /* get it right for 134.5 baud */ |
| 3380 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 3381 | 2; |
| 3382 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3383 | ASYNC_SPD_CUST) { |
| 3384 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3385 | baud_rate) + 2; |
| 3386 | } else if (baud) { |
| 3387 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3388 | baud) + 2; |
| 3389 | /* this needs to be propagated into the card info */ |
| 3390 | } else { |
| 3391 | info->timeout = 0; |
| 3392 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3393 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3394 | /* byte size and parity */ |
| 3395 | switch (cflag & CSIZE) { |
| 3396 | case CS5: |
| 3397 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); |
| 3398 | break; |
| 3399 | case CS6: |
| 3400 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); |
| 3401 | break; |
| 3402 | case CS7: |
| 3403 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); |
| 3404 | break; |
| 3405 | case CS8: |
| 3406 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); |
| 3407 | break; |
| 3408 | } |
| 3409 | if (cflag & CSTOPB) { |
| 3410 | cy_writel(&ch_ctrl->comm_data_l, |
| 3411 | cy_readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
| 3412 | } else { |
| 3413 | cy_writel(&ch_ctrl->comm_data_l, |
| 3414 | cy_readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
| 3415 | } |
| 3416 | if (cflag & PARENB) { |
| 3417 | if (cflag & PARODD) { |
| 3418 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
| 3419 | } else { |
| 3420 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
| 3421 | } |
| 3422 | } else { |
| 3423 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
| 3424 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3425 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3426 | /* CTS flow control flag */ |
| 3427 | if (cflag & CRTSCTS) { |
| 3428 | cy_writel(&ch_ctrl->hw_flow, |
| 3429 | cy_readl(&ch_ctrl-> |
| 3430 | hw_flow) | C_RS_CTS | C_RS_RTS); |
| 3431 | } else { |
| 3432 | cy_writel(&ch_ctrl->hw_flow, |
| 3433 | cy_readl(&ch_ctrl-> |
| 3434 | hw_flow) & ~(C_RS_CTS | C_RS_RTS)); |
| 3435 | } |
| 3436 | /* As the HW flow control is done in firmware, the driver |
| 3437 | doesn't need to care about it */ |
| 3438 | info->flags &= ~ASYNC_CTS_FLOW; |
| 3439 | |
| 3440 | /* XON/XOFF/XANY flow control flags */ |
| 3441 | sw_flow = 0; |
| 3442 | if (iflag & IXON) { |
| 3443 | sw_flow |= C_FL_OXX; |
| 3444 | if (iflag & IXANY) |
| 3445 | sw_flow |= C_FL_OIXANY; |
| 3446 | } |
| 3447 | cy_writel(&ch_ctrl->sw_flow, sw_flow); |
| 3448 | |
| 3449 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L); |
| 3450 | if (retval != 0) { |
| 3451 | printk("cyc:set_line_char retval on ttyC%d was %x\n", |
| 3452 | info->line, retval); |
| 3453 | } |
| 3454 | |
| 3455 | /* CD sensitivity */ |
| 3456 | if (cflag & CLOCAL) { |
| 3457 | info->flags &= ~ASYNC_CHECK_CD; |
| 3458 | } else { |
| 3459 | info->flags |= ASYNC_CHECK_CD; |
| 3460 | } |
| 3461 | |
| 3462 | if (baud == 0) { /* baud rate is zero, turn off line */ |
| 3463 | cy_writel(&ch_ctrl->rs_control, |
| 3464 | cy_readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3465 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3466 | printk("cyc:set_line_char dropping Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3467 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3468 | } else { |
| 3469 | cy_writel(&ch_ctrl->rs_control, |
| 3470 | cy_readl(&ch_ctrl->rs_control) | C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3471 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3472 | printk("cyc:set_line_char raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3473 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3474 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3475 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3476 | retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTLM,0L); |
| 3477 | if (retval != 0) { |
| 3478 | printk("cyc:set_line_char(2) retval on ttyC%d was %x\n", |
| 3479 | info->line, retval); |
| 3480 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3481 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3482 | if (info->tty) { |
| 3483 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 3484 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3485 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3486 | } /* set_line_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3487 | |
| 3488 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3489 | get_serial_info(struct cyclades_port *info, |
| 3490 | struct serial_struct __user * retinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3491 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3492 | struct serial_struct tmp; |
| 3493 | struct cyclades_card *cinfo = &cy_card[info->card]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3494 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3495 | if (!retinfo) |
| 3496 | return -EFAULT; |
| 3497 | memset(&tmp, 0, sizeof(tmp)); |
| 3498 | tmp.type = info->type; |
| 3499 | tmp.line = info->line; |
| 3500 | tmp.port = info->card * 0x100 + info->line - cinfo->first_line; |
| 3501 | tmp.irq = cinfo->irq; |
| 3502 | tmp.flags = info->flags; |
| 3503 | tmp.close_delay = info->close_delay; |
Andrew Morton | d5dedf9 | 2007-03-05 00:30:04 -0800 | [diff] [blame] | 3504 | tmp.closing_wait = info->closing_wait; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3505 | tmp.baud_base = info->baud; |
| 3506 | tmp.custom_divisor = info->custom_divisor; |
| 3507 | tmp.hub6 = 0; /*!!! */ |
| 3508 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
| 3509 | } /* get_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3510 | |
| 3511 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3512 | set_serial_info(struct cyclades_port *info, |
| 3513 | struct serial_struct __user * new_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3514 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3515 | struct serial_struct new_serial; |
| 3516 | struct cyclades_port old_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3517 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3518 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
| 3519 | return -EFAULT; |
| 3520 | old_info = *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3521 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3522 | if (!capable(CAP_SYS_ADMIN)) { |
| 3523 | if (new_serial.close_delay != info->close_delay || |
| 3524 | new_serial.baud_base != info->baud || |
| 3525 | (new_serial.flags & ASYNC_FLAGS & |
| 3526 | ~ASYNC_USR_MASK) != |
| 3527 | (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
| 3528 | return -EPERM; |
| 3529 | info->flags = (info->flags & ~ASYNC_USR_MASK) | |
| 3530 | (new_serial.flags & ASYNC_USR_MASK); |
| 3531 | info->baud = new_serial.baud_base; |
| 3532 | info->custom_divisor = new_serial.custom_divisor; |
| 3533 | goto check_and_exit; |
| 3534 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3535 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3536 | /* |
| 3537 | * OK, past this point, all the error checking has been done. |
| 3538 | * At this point, we start making changes..... |
| 3539 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3540 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3541 | info->baud = new_serial.baud_base; |
| 3542 | info->custom_divisor = new_serial.custom_divisor; |
| 3543 | info->flags = (info->flags & ~ASYNC_FLAGS) | |
| 3544 | (new_serial.flags & ASYNC_FLAGS); |
| 3545 | info->close_delay = new_serial.close_delay * HZ / 100; |
| 3546 | info->closing_wait = new_serial.closing_wait * HZ / 100; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3547 | |
| 3548 | check_and_exit: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3549 | if (info->flags & ASYNC_INITIALIZED) { |
| 3550 | set_line_char(info); |
| 3551 | return 0; |
| 3552 | } else { |
| 3553 | return startup(info); |
| 3554 | } |
| 3555 | } /* set_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3556 | |
| 3557 | /* |
| 3558 | * get_lsr_info - get line status register info |
| 3559 | * |
| 3560 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 3561 | * is emptied. On bus types like RS485, the transmitter must |
| 3562 | * release the bus after transmitting. This must be done when |
| 3563 | * the transmit shift register is empty, not be done when the |
| 3564 | * transmit holding register is empty. This functionality |
| 3565 | * allows an RS485 driver to be written in user space. |
| 3566 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3567 | static int get_lsr_info(struct cyclades_port *info, unsigned int __user * value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3568 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3569 | int card, chip, channel, index; |
| 3570 | unsigned char status; |
| 3571 | unsigned int result; |
| 3572 | unsigned long flags; |
| 3573 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3574 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3575 | card = info->card; |
| 3576 | channel = (info->line) - (cy_card[card].first_line); |
| 3577 | if (!IS_CYC_Z(cy_card[card])) { |
| 3578 | chip = channel >> 2; |
| 3579 | channel &= 0x03; |
| 3580 | index = cy_card[card].bus_index; |
| 3581 | base_addr = |
| 3582 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3583 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3584 | CY_LOCK(info, flags); |
| 3585 | status = cy_readb(base_addr + (CySRER << index)) & |
| 3586 | (CyTxRdy | CyTxMpty); |
| 3587 | CY_UNLOCK(info, flags); |
| 3588 | result = (status ? 0 : TIOCSER_TEMT); |
| 3589 | } else { |
| 3590 | /* Not supported yet */ |
| 3591 | return -EINVAL; |
| 3592 | } |
| 3593 | return put_user(result, (unsigned long __user *)value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3594 | } |
| 3595 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3596 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3597 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3598 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 3599 | int card, chip, channel, index; |
| 3600 | void __iomem *base_addr; |
| 3601 | unsigned long flags; |
| 3602 | unsigned char status; |
| 3603 | unsigned long lstatus; |
| 3604 | unsigned int result; |
| 3605 | struct FIRM_ID __iomem *firm_id; |
| 3606 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3607 | struct BOARD_CTRL __iomem *board_ctrl; |
| 3608 | struct CH_CTRL __iomem *ch_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3609 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3610 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) |
| 3611 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3612 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3613 | card = info->card; |
| 3614 | channel = (info->line) - (cy_card[card].first_line); |
| 3615 | if (!IS_CYC_Z(cy_card[card])) { |
| 3616 | chip = channel >> 2; |
| 3617 | channel &= 0x03; |
| 3618 | index = cy_card[card].bus_index; |
| 3619 | base_addr = |
| 3620 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3621 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3622 | CY_LOCK(info, flags); |
| 3623 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 3624 | status = cy_readb(base_addr + (CyMSVR1 << index)); |
| 3625 | status |= cy_readb(base_addr + (CyMSVR2 << index)); |
| 3626 | CY_UNLOCK(info, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3627 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3628 | if (info->rtsdtr_inv) { |
| 3629 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | |
| 3630 | ((status & CyDTR) ? TIOCM_RTS : 0); |
| 3631 | } else { |
| 3632 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | |
| 3633 | ((status & CyDTR) ? TIOCM_DTR : 0); |
| 3634 | } |
| 3635 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | |
| 3636 | ((status & CyRI) ? TIOCM_RNG : 0) | |
| 3637 | ((status & CyDSR) ? TIOCM_DSR : 0) | |
| 3638 | ((status & CyCTS) ? TIOCM_CTS : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3639 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3640 | base_addr = cy_card[card].base_addr; |
| 3641 | |
| 3642 | if (cy_card[card].num_chips != -1) { |
| 3643 | return -EINVAL; |
| 3644 | } |
| 3645 | |
| 3646 | firm_id = cy_card[card].base_addr + ID_ADDRESS; |
| 3647 | if (ISZLOADED(cy_card[card])) { |
| 3648 | zfw_ctrl = cy_card[card].base_addr + |
| 3649 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 3650 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 3651 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 3652 | lstatus = cy_readl(&ch_ctrl[channel].rs_status); |
| 3653 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
| 3654 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | |
| 3655 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | |
| 3656 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | |
| 3657 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | |
| 3658 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); |
| 3659 | } else { |
| 3660 | result = 0; |
| 3661 | return -ENODEV; |
| 3662 | } |
| 3663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3664 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3665 | return result; |
| 3666 | } /* cy_tiomget */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3667 | |
| 3668 | static int |
| 3669 | cy_tiocmset(struct tty_struct *tty, struct file *file, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3670 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3671 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3672 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 3673 | int card, chip, channel, index; |
| 3674 | void __iomem *base_addr; |
| 3675 | unsigned long flags; |
| 3676 | struct FIRM_ID __iomem *firm_id; |
| 3677 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3678 | struct BOARD_CTRL __iomem *board_ctrl; |
| 3679 | struct CH_CTRL __iomem *ch_ctrl; |
| 3680 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3681 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3682 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) |
| 3683 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3684 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3685 | card = info->card; |
| 3686 | channel = (info->line) - (cy_card[card].first_line); |
| 3687 | if (!IS_CYC_Z(cy_card[card])) { |
| 3688 | chip = channel >> 2; |
| 3689 | channel &= 0x03; |
| 3690 | index = cy_card[card].bus_index; |
| 3691 | base_addr = |
| 3692 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3693 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3694 | if (set & TIOCM_RTS) { |
| 3695 | CY_LOCK(info, flags); |
| 3696 | cy_writeb(base_addr + (CyCAR << index), |
| 3697 | (u_char) channel); |
| 3698 | if (info->rtsdtr_inv) { |
| 3699 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3700 | CyDTR); |
| 3701 | } else { |
| 3702 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3703 | CyRTS); |
| 3704 | } |
| 3705 | CY_UNLOCK(info, flags); |
| 3706 | } |
| 3707 | if (clear & TIOCM_RTS) { |
| 3708 | CY_LOCK(info, flags); |
| 3709 | cy_writeb(base_addr + (CyCAR << index), |
| 3710 | (u_char) channel); |
| 3711 | if (info->rtsdtr_inv) { |
| 3712 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3713 | ~CyDTR); |
| 3714 | } else { |
| 3715 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3716 | ~CyRTS); |
| 3717 | } |
| 3718 | CY_UNLOCK(info, flags); |
| 3719 | } |
| 3720 | if (set & TIOCM_DTR) { |
| 3721 | CY_LOCK(info, flags); |
| 3722 | cy_writeb(base_addr + (CyCAR << index), |
| 3723 | (u_char) channel); |
| 3724 | if (info->rtsdtr_inv) { |
| 3725 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3726 | CyRTS); |
| 3727 | } else { |
| 3728 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3729 | CyDTR); |
| 3730 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3731 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3732 | printk("cyc:set_modem_info raising DTR\n"); |
| 3733 | printk(" status: 0x%x, 0x%x\n", |
| 3734 | cy_readb(base_addr + (CyMSVR1 << index)), |
| 3735 | cy_readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3736 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3737 | CY_UNLOCK(info, flags); |
| 3738 | } |
| 3739 | if (clear & TIOCM_DTR) { |
| 3740 | CY_LOCK(info, flags); |
| 3741 | cy_writeb(base_addr + (CyCAR << index), |
| 3742 | (u_char) channel); |
| 3743 | if (info->rtsdtr_inv) { |
| 3744 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3745 | ~CyRTS); |
| 3746 | } else { |
| 3747 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3748 | ~CyDTR); |
| 3749 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3750 | |
| 3751 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3752 | printk("cyc:set_modem_info dropping DTR\n"); |
| 3753 | printk(" status: 0x%x, 0x%x\n", |
| 3754 | cy_readb(base_addr + (CyMSVR1 << index)), |
| 3755 | cy_readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3756 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3757 | CY_UNLOCK(info, flags); |
| 3758 | } |
| 3759 | } else { |
| 3760 | base_addr = cy_card[card].base_addr; |
| 3761 | |
| 3762 | firm_id = cy_card[card].base_addr + ID_ADDRESS; |
| 3763 | if (ISZLOADED(cy_card[card])) { |
| 3764 | zfw_ctrl = cy_card[card].base_addr + |
| 3765 | (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 3766 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 3767 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 3768 | |
| 3769 | if (set & TIOCM_RTS) { |
| 3770 | CY_LOCK(info, flags); |
| 3771 | cy_writel(&ch_ctrl[channel].rs_control, |
| 3772 | cy_readl(&ch_ctrl[channel]. |
| 3773 | rs_control) | C_RS_RTS); |
| 3774 | CY_UNLOCK(info, flags); |
| 3775 | } |
| 3776 | if (clear & TIOCM_RTS) { |
| 3777 | CY_LOCK(info, flags); |
| 3778 | cy_writel(&ch_ctrl[channel].rs_control, |
| 3779 | cy_readl(&ch_ctrl[channel]. |
| 3780 | rs_control) & ~C_RS_RTS); |
| 3781 | CY_UNLOCK(info, flags); |
| 3782 | } |
| 3783 | if (set & TIOCM_DTR) { |
| 3784 | CY_LOCK(info, flags); |
| 3785 | cy_writel(&ch_ctrl[channel].rs_control, |
| 3786 | cy_readl(&ch_ctrl[channel]. |
| 3787 | rs_control) | C_RS_DTR); |
| 3788 | #ifdef CY_DEBUG_DTR |
| 3789 | printk("cyc:set_modem_info raising Z DTR\n"); |
| 3790 | #endif |
| 3791 | CY_UNLOCK(info, flags); |
| 3792 | } |
| 3793 | if (clear & TIOCM_DTR) { |
| 3794 | CY_LOCK(info, flags); |
| 3795 | cy_writel(&ch_ctrl[channel].rs_control, |
| 3796 | cy_readl(&ch_ctrl[channel]. |
| 3797 | rs_control) & ~C_RS_DTR); |
| 3798 | #ifdef CY_DEBUG_DTR |
| 3799 | printk("cyc:set_modem_info clearing Z DTR\n"); |
| 3800 | #endif |
| 3801 | CY_UNLOCK(info, flags); |
| 3802 | } |
| 3803 | } else { |
| 3804 | return -ENODEV; |
| 3805 | } |
| 3806 | CY_LOCK(info, flags); |
| 3807 | retval = cyz_issue_cmd(&cy_card[info->card], |
| 3808 | channel, C_CM_IOCTLM, 0L); |
| 3809 | if (retval != 0) { |
| 3810 | printk("cyc:set_modem_info retval on ttyC%d was %x\n", |
| 3811 | info->line, retval); |
| 3812 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3813 | CY_UNLOCK(info, flags); |
| 3814 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3815 | return 0; |
| 3816 | } /* cy_tiocmset */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3817 | |
| 3818 | /* |
| 3819 | * cy_break() --- routine which turns the break handling on or off |
| 3820 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3821 | static void cy_break(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3822 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3823 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 3824 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3825 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3826 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
| 3827 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3828 | |
| 3829 | CY_LOCK(info, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3830 | if (!IS_CYC_Z(cy_card[info->card])) { |
| 3831 | /* Let the transmit ISR take care of this (since it |
| 3832 | requires stuffing characters into the output stream). |
| 3833 | */ |
| 3834 | if (break_state == -1) { |
| 3835 | if (!info->breakon) { |
| 3836 | info->breakon = 1; |
| 3837 | if (!info->xmit_cnt) { |
| 3838 | CY_UNLOCK(info, flags); |
| 3839 | start_xmit(info); |
| 3840 | CY_LOCK(info, flags); |
| 3841 | } |
| 3842 | } |
| 3843 | } else { |
| 3844 | if (!info->breakoff) { |
| 3845 | info->breakoff = 1; |
| 3846 | if (!info->xmit_cnt) { |
| 3847 | CY_UNLOCK(info, flags); |
| 3848 | start_xmit(info); |
| 3849 | CY_LOCK(info, flags); |
| 3850 | } |
| 3851 | } |
| 3852 | } |
| 3853 | } else { |
| 3854 | int retval; |
| 3855 | |
| 3856 | if (break_state == -1) { |
| 3857 | retval = cyz_issue_cmd(&cy_card[info->card], |
| 3858 | info->line - cy_card[info->card].first_line, |
| 3859 | C_CM_SET_BREAK, 0L); |
| 3860 | if (retval != 0) { |
| 3861 | printk("cyc:cy_break (set) retval on ttyC%d " |
| 3862 | "was %x\n", info->line, retval); |
| 3863 | } |
| 3864 | } else { |
| 3865 | retval = cyz_issue_cmd(&cy_card[info->card], |
| 3866 | info->line - cy_card[info->card].first_line, |
| 3867 | C_CM_CLR_BREAK, 0L); |
| 3868 | if (retval != 0) { |
| 3869 | printk("cyc:cy_break (clr) retval on ttyC%d " |
| 3870 | "was %x\n", info->line, retval); |
| 3871 | } |
| 3872 | } |
| 3873 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3874 | CY_UNLOCK(info, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3875 | } /* cy_break */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3876 | |
| 3877 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3878 | get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3879 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3880 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3881 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
| 3882 | return -EFAULT; |
| 3883 | info->mon.int_count = 0; |
| 3884 | info->mon.char_count = 0; |
| 3885 | info->mon.char_max = 0; |
| 3886 | info->mon.char_last = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3887 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3888 | } /* get_mon_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3889 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3890 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3891 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3892 | void __iomem *base_addr; |
| 3893 | int card, channel, chip, index; |
| 3894 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3895 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3896 | card = info->card; |
| 3897 | channel = info->line - cy_card[card].first_line; |
| 3898 | if (!IS_CYC_Z(cy_card[card])) { |
| 3899 | chip = channel >> 2; |
| 3900 | channel &= 0x03; |
| 3901 | index = cy_card[card].bus_index; |
| 3902 | base_addr = |
| 3903 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3904 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3905 | info->cor3 &= ~CyREC_FIFO; |
| 3906 | info->cor3 |= value & CyREC_FIFO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3907 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3908 | CY_LOCK(info, flags); |
| 3909 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
| 3910 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); |
| 3911 | CY_UNLOCK(info, flags); |
| 3912 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3913 | /* Nothing to do! */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3914 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3915 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3916 | } /* set_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3917 | |
| 3918 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3919 | get_threshold(struct cyclades_port *info, unsigned long __user * value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3920 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3921 | void __iomem *base_addr; |
| 3922 | int card, channel, chip, index; |
| 3923 | unsigned long tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3924 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3925 | card = info->card; |
| 3926 | channel = info->line - cy_card[card].first_line; |
| 3927 | if (!IS_CYC_Z(cy_card[card])) { |
| 3928 | chip = channel >> 2; |
| 3929 | channel &= 0x03; |
| 3930 | index = cy_card[card].bus_index; |
| 3931 | base_addr = |
| 3932 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
| 3933 | |
| 3934 | tmp = cy_readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
| 3935 | return put_user(tmp, value); |
| 3936 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3937 | /* Nothing to do! */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3938 | return 0; |
| 3939 | } |
| 3940 | } /* get_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3941 | |
| 3942 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3943 | set_default_threshold(struct cyclades_port *info, unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3944 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3945 | info->default_threshold = value & 0x0f; |
| 3946 | return 0; |
| 3947 | } /* set_default_threshold */ |
| 3948 | |
| 3949 | static int |
| 3950 | get_default_threshold(struct cyclades_port *info, unsigned long __user * value) |
| 3951 | { |
| 3952 | return put_user(info->default_threshold, value); |
| 3953 | } /* get_default_threshold */ |
| 3954 | |
| 3955 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
| 3956 | { |
| 3957 | void __iomem *base_addr; |
| 3958 | int card, channel, chip, index; |
| 3959 | unsigned long flags; |
| 3960 | |
| 3961 | card = info->card; |
| 3962 | channel = info->line - cy_card[card].first_line; |
| 3963 | if (!IS_CYC_Z(cy_card[card])) { |
| 3964 | chip = channel >> 2; |
| 3965 | channel &= 0x03; |
| 3966 | index = cy_card[card].bus_index; |
| 3967 | base_addr = |
| 3968 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
| 3969 | |
| 3970 | CY_LOCK(info, flags); |
| 3971 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
| 3972 | CY_UNLOCK(info, flags); |
| 3973 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3974 | /* Nothing to do! */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3975 | } |
| 3976 | return 0; |
| 3977 | } /* set_timeout */ |
| 3978 | |
| 3979 | static int get_timeout(struct cyclades_port *info, unsigned long __user * value) |
| 3980 | { |
| 3981 | void __iomem *base_addr; |
| 3982 | int card, channel, chip, index; |
| 3983 | unsigned long tmp; |
| 3984 | |
| 3985 | card = info->card; |
| 3986 | channel = info->line - cy_card[card].first_line; |
| 3987 | if (!IS_CYC_Z(cy_card[card])) { |
| 3988 | chip = channel >> 2; |
| 3989 | channel &= 0x03; |
| 3990 | index = cy_card[card].bus_index; |
| 3991 | base_addr = |
| 3992 | cy_card[card].base_addr + (cy_chip_offset[chip] << index); |
| 3993 | |
| 3994 | tmp = cy_readb(base_addr + (CyRTPR << index)); |
| 3995 | return put_user(tmp, value); |
| 3996 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 3997 | /* Nothing to do! */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3998 | return 0; |
| 3999 | } |
| 4000 | } /* get_timeout */ |
| 4001 | |
| 4002 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
| 4003 | { |
| 4004 | info->default_timeout = value & 0xff; |
| 4005 | return 0; |
| 4006 | } /* set_default_timeout */ |
| 4007 | |
| 4008 | static int |
| 4009 | get_default_timeout(struct cyclades_port *info, unsigned long __user * value) |
| 4010 | { |
| 4011 | return put_user(info->default_timeout, value); |
| 4012 | } /* get_default_timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4013 | |
| 4014 | /* |
| 4015 | * This routine allows the tty driver to implement device- |
| 4016 | * specific ioctl's. If the ioctl number passed in cmd is |
| 4017 | * not recognized by the driver, it should return ENOIOCTLCMD. |
| 4018 | */ |
| 4019 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4020 | cy_ioctl(struct tty_struct *tty, struct file *file, |
| 4021 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4022 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4023 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4024 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
| 4025 | struct serial_icounter_struct __user *p_cuser; /* user space */ |
| 4026 | int ret_val = 0; |
| 4027 | unsigned long flags; |
| 4028 | void __user *argp = (void __user *)arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4029 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4030 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) |
| 4031 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4032 | |
| 4033 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4034 | printk("cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", info->line, cmd, arg); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4035 | #endif |
| 4036 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4037 | switch (cmd) { |
| 4038 | case CYGETMON: |
| 4039 | ret_val = get_mon_info(info, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4040 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4041 | case CYGETTHRESH: |
| 4042 | ret_val = get_threshold(info, argp); |
| 4043 | break; |
| 4044 | case CYSETTHRESH: |
| 4045 | ret_val = set_threshold(info, arg); |
| 4046 | break; |
| 4047 | case CYGETDEFTHRESH: |
| 4048 | ret_val = get_default_threshold(info, argp); |
| 4049 | break; |
| 4050 | case CYSETDEFTHRESH: |
| 4051 | ret_val = set_default_threshold(info, arg); |
| 4052 | break; |
| 4053 | case CYGETTIMEOUT: |
| 4054 | ret_val = get_timeout(info, argp); |
| 4055 | break; |
| 4056 | case CYSETTIMEOUT: |
| 4057 | ret_val = set_timeout(info, arg); |
| 4058 | break; |
| 4059 | case CYGETDEFTIMEOUT: |
| 4060 | ret_val = get_default_timeout(info, argp); |
| 4061 | break; |
| 4062 | case CYSETDEFTIMEOUT: |
| 4063 | ret_val = set_default_timeout(info, arg); |
| 4064 | break; |
| 4065 | case CYSETRFLOW: |
| 4066 | info->rflow = (int)arg; |
| 4067 | ret_val = 0; |
| 4068 | break; |
| 4069 | case CYGETRFLOW: |
| 4070 | ret_val = info->rflow; |
| 4071 | break; |
| 4072 | case CYSETRTSDTR_INV: |
| 4073 | info->rtsdtr_inv = (int)arg; |
| 4074 | ret_val = 0; |
| 4075 | break; |
| 4076 | case CYGETRTSDTR_INV: |
| 4077 | ret_val = info->rtsdtr_inv; |
| 4078 | break; |
| 4079 | case CYGETCARDINFO: |
| 4080 | if (copy_to_user(argp, &cy_card[info->card], |
| 4081 | sizeof(struct cyclades_card))) { |
| 4082 | ret_val = -EFAULT; |
| 4083 | break; |
| 4084 | } |
| 4085 | ret_val = 0; |
| 4086 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4087 | case CYGETCD1400VER: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4088 | ret_val = info->chip_rev; |
| 4089 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4090 | #ifndef CONFIG_CYZ_INTR |
| 4091 | case CYZSETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4092 | cyz_polling_cycle = (arg * HZ) / 1000; |
| 4093 | ret_val = 0; |
| 4094 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4095 | case CYZGETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4096 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
| 4097 | break; |
| 4098 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4099 | case CYSETWAIT: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4100 | info->closing_wait = (unsigned short)arg *HZ / 100; |
| 4101 | ret_val = 0; |
| 4102 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4103 | case CYGETWAIT: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4104 | ret_val = info->closing_wait / (HZ / 100); |
| 4105 | break; |
| 4106 | case TIOCGSERIAL: |
| 4107 | ret_val = get_serial_info(info, argp); |
| 4108 | break; |
| 4109 | case TIOCSSERIAL: |
| 4110 | ret_val = set_serial_info(info, argp); |
| 4111 | break; |
| 4112 | case TIOCSERGETLSR: /* Get line status register */ |
| 4113 | ret_val = get_lsr_info(info, argp); |
| 4114 | break; |
| 4115 | /* |
| 4116 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 4117 | * - mask passed in arg for lines of interest |
| 4118 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 4119 | * Caller should use TIOCGICOUNT to see which one it was |
| 4120 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4121 | case TIOCMIWAIT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4122 | CY_LOCK(info, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4123 | /* note the counters on entry */ |
| 4124 | cprev = info->icount; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4125 | CY_UNLOCK(info, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4126 | while (1) { |
| 4127 | interruptible_sleep_on(&info->delta_msr_wait); |
| 4128 | /* see if a signal did it */ |
| 4129 | if (signal_pending(current)) { |
| 4130 | return -ERESTARTSYS; |
| 4131 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4132 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4133 | CY_LOCK(info, flags); |
| 4134 | cnow = info->icount; /* atomic copy */ |
| 4135 | CY_UNLOCK(info, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4136 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4137 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
| 4138 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { |
| 4139 | return -EIO; /* no change => error */ |
| 4140 | } |
| 4141 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 4142 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 4143 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
| 4144 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { |
| 4145 | return 0; |
| 4146 | } |
| 4147 | cprev = cnow; |
| 4148 | } |
| 4149 | /* NOTREACHED */ |
| 4150 | |
| 4151 | /* |
| 4152 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
| 4153 | * Return: write counters to the user passed counter struct |
| 4154 | * NB: both 1->0 and 0->1 transitions are counted except for |
| 4155 | * RI where only 0->1 is counted. |
| 4156 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4157 | case TIOCGICOUNT: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4158 | CY_LOCK(info, flags); |
| 4159 | cnow = info->icount; |
| 4160 | CY_UNLOCK(info, flags); |
| 4161 | p_cuser = argp; |
| 4162 | ret_val = put_user(cnow.cts, &p_cuser->cts); |
| 4163 | if (ret_val) |
| 4164 | return ret_val; |
| 4165 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); |
| 4166 | if (ret_val) |
| 4167 | return ret_val; |
| 4168 | ret_val = put_user(cnow.rng, &p_cuser->rng); |
| 4169 | if (ret_val) |
| 4170 | return ret_val; |
| 4171 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); |
| 4172 | if (ret_val) |
| 4173 | return ret_val; |
| 4174 | ret_val = put_user(cnow.rx, &p_cuser->rx); |
| 4175 | if (ret_val) |
| 4176 | return ret_val; |
| 4177 | ret_val = put_user(cnow.tx, &p_cuser->tx); |
| 4178 | if (ret_val) |
| 4179 | return ret_val; |
| 4180 | ret_val = put_user(cnow.frame, &p_cuser->frame); |
| 4181 | if (ret_val) |
| 4182 | return ret_val; |
| 4183 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); |
| 4184 | if (ret_val) |
| 4185 | return ret_val; |
| 4186 | ret_val = put_user(cnow.parity, &p_cuser->parity); |
| 4187 | if (ret_val) |
| 4188 | return ret_val; |
| 4189 | ret_val = put_user(cnow.brk, &p_cuser->brk); |
| 4190 | if (ret_val) |
| 4191 | return ret_val; |
| 4192 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); |
| 4193 | if (ret_val) |
| 4194 | return ret_val; |
| 4195 | ret_val = 0; |
| 4196 | break; |
| 4197 | default: |
| 4198 | ret_val = -ENOIOCTLCMD; |
| 4199 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4200 | |
| 4201 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4202 | printk(" cyc:cy_ioctl done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4203 | #endif |
| 4204 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4205 | return ret_val; |
| 4206 | } /* cy_ioctl */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4207 | |
| 4208 | /* |
| 4209 | * This routine allows the tty driver to be notified when |
| 4210 | * device's termios settings have changed. Note that a |
| 4211 | * well-designed tty driver should be prepared to accept the case |
| 4212 | * where old == NULL, and try to do something rational. |
| 4213 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4214 | static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4215 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4216 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4217 | |
| 4218 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4219 | printk("cyc:cy_set_termios ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4220 | #endif |
| 4221 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4222 | if (tty->termios->c_cflag == old_termios->c_cflag && |
| 4223 | (tty->termios->c_iflag & (IXON | IXANY)) == |
| 4224 | (old_termios->c_iflag & (IXON | IXANY))) |
| 4225 | return; |
| 4226 | set_line_char(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4227 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4228 | if ((old_termios->c_cflag & CRTSCTS) && |
| 4229 | !(tty->termios->c_cflag & CRTSCTS)) { |
| 4230 | tty->hw_stopped = 0; |
| 4231 | cy_start(tty); |
| 4232 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4233 | #if 0 |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4234 | /* |
| 4235 | * No need to wake up processes in open wait, since they |
| 4236 | * sample the CLOCAL flag once, and don't recheck it. |
| 4237 | * XXX It's not clear whether the current behavior is correct |
| 4238 | * or not. Hence, this may change..... |
| 4239 | */ |
| 4240 | if (!(old_termios->c_cflag & CLOCAL) && |
| 4241 | (tty->termios->c_cflag & CLOCAL)) |
| 4242 | wake_up_interruptible(&info->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4243 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4244 | } /* cy_set_termios */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4245 | |
| 4246 | /* This function is used to send a high-priority XON/XOFF character to |
| 4247 | the device. |
| 4248 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4249 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4250 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4251 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4252 | int card, channel; |
| 4253 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4254 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4255 | return; |
| 4256 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4257 | info->x_char = ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4258 | |
| 4259 | if (ch) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4260 | cy_start(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4261 | |
| 4262 | card = info->card; |
| 4263 | channel = info->line - cy_card[card].first_line; |
| 4264 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4265 | if (IS_CYC_Z(cy_card[card])) { |
| 4266 | if (ch == STOP_CHAR(tty)) |
| 4267 | cyz_issue_cmd(&cy_card[card], channel, C_CM_SENDXOFF, |
| 4268 | 0L); |
| 4269 | else if (ch == START_CHAR(tty)) |
| 4270 | cyz_issue_cmd(&cy_card[card], channel, C_CM_SENDXON, |
| 4271 | 0L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4272 | } |
| 4273 | } |
| 4274 | |
| 4275 | /* This routine is called by the upper-layer tty layer to signal |
| 4276 | that incoming characters should be throttled because the input |
| 4277 | buffers are close to full. |
| 4278 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4279 | static void cy_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4280 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4281 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4282 | unsigned long flags; |
| 4283 | void __iomem *base_addr; |
| 4284 | int card, chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4285 | |
| 4286 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4287 | char buf[64]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4288 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4289 | printk("cyc:throttle %s: %d....ttyC%d\n", tty_name(tty, buf), |
| 4290 | tty->ldisc.chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4291 | #endif |
| 4292 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4293 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) { |
| 4294 | return; |
| 4295 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4296 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4297 | card = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4298 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4299 | if (I_IXOFF(tty)) { |
| 4300 | if (!IS_CYC_Z(cy_card[card])) |
| 4301 | cy_send_xchar(tty, STOP_CHAR(tty)); |
| 4302 | else |
| 4303 | info->throttle = 1; |
| 4304 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4305 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4306 | if (tty->termios->c_cflag & CRTSCTS) { |
| 4307 | channel = info->line - cy_card[card].first_line; |
| 4308 | if (!IS_CYC_Z(cy_card[card])) { |
| 4309 | chip = channel >> 2; |
| 4310 | channel &= 0x03; |
| 4311 | index = cy_card[card].bus_index; |
| 4312 | base_addr = cy_card[card].base_addr + |
| 4313 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4314 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4315 | CY_LOCK(info, flags); |
| 4316 | cy_writeb(base_addr + (CyCAR << index), |
| 4317 | (u_char) channel); |
| 4318 | if (info->rtsdtr_inv) { |
| 4319 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 4320 | ~CyDTR); |
| 4321 | } else { |
| 4322 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 4323 | ~CyRTS); |
| 4324 | } |
| 4325 | CY_UNLOCK(info, flags); |
| 4326 | } else { |
| 4327 | info->throttle = 1; |
| 4328 | } |
| 4329 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4330 | } /* cy_throttle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4331 | |
| 4332 | /* |
| 4333 | * This routine notifies the tty driver that it should signal |
| 4334 | * that characters can now be sent to the tty without fear of |
| 4335 | * overrunning the input buffers of the line disciplines. |
| 4336 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4337 | static void cy_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4338 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4339 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4340 | unsigned long flags; |
| 4341 | void __iomem *base_addr; |
| 4342 | int card, chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4343 | |
| 4344 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4345 | char buf[64]; |
| 4346 | |
| 4347 | printk("cyc:unthrottle %s: %d....ttyC%d\n", tty_name(tty, buf), |
| 4348 | tty->ldisc.chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4349 | #endif |
| 4350 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4351 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) { |
| 4352 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4353 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4354 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4355 | if (I_IXOFF(tty)) { |
| 4356 | if (info->x_char) |
| 4357 | info->x_char = 0; |
| 4358 | else |
| 4359 | cy_send_xchar(tty, START_CHAR(tty)); |
| 4360 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4361 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4362 | if (tty->termios->c_cflag & CRTSCTS) { |
| 4363 | card = info->card; |
| 4364 | channel = info->line - cy_card[card].first_line; |
| 4365 | if (!IS_CYC_Z(cy_card[card])) { |
| 4366 | chip = channel >> 2; |
| 4367 | channel &= 0x03; |
| 4368 | index = cy_card[card].bus_index; |
| 4369 | base_addr = cy_card[card].base_addr + |
| 4370 | (cy_chip_offset[chip] << index); |
| 4371 | |
| 4372 | CY_LOCK(info, flags); |
| 4373 | cy_writeb(base_addr + (CyCAR << index), |
| 4374 | (u_char) channel); |
| 4375 | if (info->rtsdtr_inv) { |
| 4376 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 4377 | CyDTR); |
| 4378 | } else { |
| 4379 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 4380 | CyRTS); |
| 4381 | } |
| 4382 | CY_UNLOCK(info, flags); |
| 4383 | } else { |
| 4384 | info->throttle = 0; |
| 4385 | } |
| 4386 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4387 | } /* cy_unthrottle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4388 | |
| 4389 | /* cy_start and cy_stop provide software output flow control as a |
| 4390 | function of XON/XOFF, software CTS, and other such stuff. |
| 4391 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4392 | static void cy_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4393 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4394 | struct cyclades_card *cinfo; |
| 4395 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4396 | void __iomem *base_addr; |
| 4397 | int chip, channel, index; |
| 4398 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4399 | |
| 4400 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4401 | printk("cyc:cy_stop ttyC%d\n", info->line); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4402 | #endif |
| 4403 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4404 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
| 4405 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4406 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4407 | cinfo = &cy_card[info->card]; |
| 4408 | channel = info->line - cinfo->first_line; |
| 4409 | if (!IS_CYC_Z(*cinfo)) { |
| 4410 | index = cinfo->bus_index; |
| 4411 | chip = channel >> 2; |
| 4412 | channel &= 0x03; |
| 4413 | base_addr = cy_card[info->card].base_addr + |
| 4414 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4415 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4416 | CY_LOCK(info, flags); |
| 4417 | cy_writeb(base_addr + (CyCAR << index), |
| 4418 | (u_char)(channel & 0x0003)); /* index channel */ |
| 4419 | cy_writeb(base_addr + (CySRER << index), |
| 4420 | cy_readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
| 4421 | CY_UNLOCK(info, flags); |
| 4422 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4423 | /* Nothing to do! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4424 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4425 | } /* cy_stop */ |
| 4426 | |
| 4427 | static void cy_start(struct tty_struct *tty) |
| 4428 | { |
| 4429 | struct cyclades_card *cinfo; |
| 4430 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4431 | void __iomem *base_addr; |
| 4432 | int chip, channel, index; |
| 4433 | unsigned long flags; |
| 4434 | |
| 4435 | #ifdef CY_DEBUG_OTHER |
| 4436 | printk("cyc:cy_start ttyC%d\n", info->line); /* */ |
| 4437 | #endif |
| 4438 | |
| 4439 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
| 4440 | return; |
| 4441 | |
| 4442 | cinfo = &cy_card[info->card]; |
| 4443 | channel = info->line - cinfo->first_line; |
| 4444 | index = cinfo->bus_index; |
| 4445 | if (!IS_CYC_Z(*cinfo)) { |
| 4446 | chip = channel >> 2; |
| 4447 | channel &= 0x03; |
| 4448 | base_addr = cy_card[info->card].base_addr + |
| 4449 | (cy_chip_offset[chip] << index); |
| 4450 | |
| 4451 | CY_LOCK(info, flags); |
| 4452 | cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */ |
| 4453 | cy_writeb(base_addr + (CySRER << index), |
| 4454 | cy_readb(base_addr + (CySRER << index)) | CyTxRdy); |
| 4455 | CY_UNLOCK(info, flags); |
| 4456 | } else { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4457 | /* Nothing to do! */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4458 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4459 | } /* cy_start */ |
| 4460 | |
| 4461 | static void cy_flush_buffer(struct tty_struct *tty) |
| 4462 | { |
| 4463 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4464 | int card, channel, retval; |
| 4465 | unsigned long flags; |
| 4466 | |
| 4467 | #ifdef CY_DEBUG_IO |
| 4468 | printk("cyc:cy_flush_buffer ttyC%d\n", info->line); /* */ |
| 4469 | #endif |
| 4470 | |
| 4471 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
| 4472 | return; |
| 4473 | |
| 4474 | card = info->card; |
| 4475 | channel = (info->line) - (cy_card[card].first_line); |
| 4476 | |
| 4477 | CY_LOCK(info, flags); |
| 4478 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 4479 | CY_UNLOCK(info, flags); |
| 4480 | |
| 4481 | if (IS_CYC_Z(cy_card[card])) { /* If it is a Z card, flush the on-board |
| 4482 | buffers as well */ |
| 4483 | CY_LOCK(info, flags); |
| 4484 | retval = |
| 4485 | cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_TX, 0L); |
| 4486 | if (retval != 0) { |
| 4487 | printk("cyc: flush_buffer retval on ttyC%d was %x\n", |
| 4488 | info->line, retval); |
| 4489 | } |
| 4490 | CY_UNLOCK(info, flags); |
| 4491 | } |
| 4492 | tty_wakeup(tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4493 | } /* cy_flush_buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4494 | |
| 4495 | /* |
| 4496 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. |
| 4497 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4498 | static void cy_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4499 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4500 | struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; |
| 4501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4502 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4503 | printk("cyc:cy_hangup ttyC%d\n", info->line); /* */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4504 | #endif |
| 4505 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4506 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
| 4507 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4508 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4509 | cy_flush_buffer(tty); |
| 4510 | shutdown(info); |
| 4511 | info->event = 0; |
| 4512 | info->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4513 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4514 | printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4515 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4516 | info->tty = NULL; |
| 4517 | info->flags &= ~ASYNC_NORMAL_ACTIVE; |
| 4518 | wake_up_interruptible(&info->open_wait); |
| 4519 | } /* cy_hangup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4520 | |
| 4521 | /* |
| 4522 | * --------------------------------------------------------------------- |
| 4523 | * cy_init() and friends |
| 4524 | * |
| 4525 | * cy_init() is called at boot-time to initialize the serial driver. |
| 4526 | * --------------------------------------------------------------------- |
| 4527 | */ |
| 4528 | |
| 4529 | /* initialize chips on Cyclom-Y card -- return number of valid |
| 4530 | chips (which is number of ports/4) */ |
| 4531 | static unsigned short __init |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4532 | cyy_init_card(void __iomem * true_base_addr, int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4533 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4534 | unsigned int chip_number; |
| 4535 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4536 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4537 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); |
| 4538 | /* Cy_HwReset is 0x1400 */ |
| 4539 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); |
| 4540 | /* Cy_ClrIntr is 0x1800 */ |
| 4541 | udelay(500L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4542 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4543 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; chip_number++) { |
| 4544 | base_addr = |
| 4545 | true_base_addr + (cy_chip_offset[chip_number] << index); |
| 4546 | mdelay(1); |
| 4547 | if (cy_readb(base_addr + (CyCCR << index)) != 0x00) { |
| 4548 | /************* |
| 4549 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", |
| 4550 | chip_number, (unsigned long)base_addr); |
| 4551 | *************/ |
| 4552 | return chip_number; |
| 4553 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4554 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4555 | cy_writeb(base_addr + (CyGFRCR << index), 0); |
| 4556 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4557 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4558 | /* The Cyclom-16Y does not decode address bit 9 and therefore |
| 4559 | cannot distinguish between references to chip 0 and a non- |
| 4560 | existent chip 4. If the preceding clearing of the supposed |
| 4561 | chip 4 GFRCR register appears at chip 0, there is no chip 4 |
| 4562 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. |
| 4563 | */ |
| 4564 | if (chip_number == 4 && cy_readb(true_base_addr + |
| 4565 | (cy_chip_offset[0] << index) + |
| 4566 | (CyGFRCR << index)) == 0) { |
| 4567 | return chip_number; |
| 4568 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4569 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4570 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); |
| 4571 | mdelay(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4572 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4573 | if (cy_readb(base_addr + (CyGFRCR << index)) == 0x00) { |
| 4574 | /* |
| 4575 | printk(" chip #%d at %#6lx is not responding ", |
| 4576 | chip_number, (unsigned long)base_addr); |
| 4577 | printk("(GFRCR stayed 0)\n", |
| 4578 | */ |
| 4579 | return chip_number; |
| 4580 | } |
| 4581 | if ((0xf0 & (cy_readb(base_addr + (CyGFRCR << index)))) != |
| 4582 | 0x40) { |
| 4583 | /* |
| 4584 | printk(" chip #%d at %#6lx is not valid (GFRCR == " |
| 4585 | "%#2x)\n", |
| 4586 | chip_number, (unsigned long)base_addr, |
| 4587 | base_addr[CyGFRCR<<index]); |
| 4588 | */ |
| 4589 | return chip_number; |
| 4590 | } |
| 4591 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); |
| 4592 | if (cy_readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
| 4593 | /* It is a CD1400 rev. J or later */ |
| 4594 | /* Impossible to reach 5ms with this chip. |
| 4595 | Changed to 2ms instead (f = 500 Hz). */ |
| 4596 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); |
| 4597 | } else { |
| 4598 | /* f = 200 Hz */ |
| 4599 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); |
| 4600 | } |
| 4601 | |
| 4602 | /* |
| 4603 | printk(" chip #%d at %#6lx is rev 0x%2x\n", |
| 4604 | chip_number, (unsigned long)base_addr, |
| 4605 | cy_readb(base_addr+(CyGFRCR<<index))); |
| 4606 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4607 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4608 | return chip_number; |
| 4609 | } /* cyy_init_card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4610 | |
| 4611 | /* |
| 4612 | * --------------------------------------------------------------------- |
| 4613 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. |
| 4614 | * sets global variables and return the number of ISA boards found. |
| 4615 | * --------------------------------------------------------------------- |
| 4616 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4617 | static int __init cy_detect_isa(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4618 | { |
| 4619 | #ifdef CONFIG_ISA |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4620 | unsigned short cy_isa_irq, nboard; |
| 4621 | void __iomem *cy_isa_address; |
| 4622 | unsigned short i, j, cy_isa_nchan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4623 | #ifdef MODULE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4624 | int isparam = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4625 | #endif |
| 4626 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4627 | nboard = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4628 | |
| 4629 | #ifdef MODULE |
| 4630 | /* Check for module parameters */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4631 | for (i = 0; i < NR_CARDS; i++) { |
| 4632 | if (maddr[i] || i) { |
| 4633 | isparam = 1; |
| 4634 | cy_isa_addresses[i] = maddr[i]; |
| 4635 | } |
| 4636 | if (!maddr[i]) |
| 4637 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4638 | } |
| 4639 | #endif |
| 4640 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4641 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
| 4642 | for (i = 0; i < NR_ISA_ADDRS; i++) { |
| 4643 | unsigned int isa_address = cy_isa_addresses[i]; |
| 4644 | if (isa_address == 0x0000) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4645 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4646 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4647 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4648 | /* probe for CD1400... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4649 | cy_isa_address = ioremap(isa_address, CyISA_Ywin); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4650 | cy_isa_nchan = CyPORTS_PER_CHIP * |
| 4651 | cyy_init_card(cy_isa_address, 0); |
| 4652 | if (cy_isa_nchan == 0) { |
| 4653 | continue; |
| 4654 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4655 | #ifdef MODULE |
| 4656 | if (isparam && irq[i]) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4657 | cy_isa_irq = irq[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4658 | else |
| 4659 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4660 | /* find out the board's irq by probing */ |
| 4661 | cy_isa_irq = detect_isa_irq(cy_isa_address); |
| 4662 | if (cy_isa_irq == 0) { |
| 4663 | printk("Cyclom-Y/ISA found at 0x%lx ", |
| 4664 | (unsigned long)cy_isa_address); |
| 4665 | printk("but the IRQ could not be detected.\n"); |
| 4666 | continue; |
| 4667 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4668 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4669 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { |
| 4670 | printk("Cyclom-Y/ISA found at 0x%lx ", |
| 4671 | (unsigned long)cy_isa_address); |
| 4672 | printk("but no more channels are available.\n"); |
| 4673 | printk("Change NR_PORTS in cyclades.c and recompile " |
| 4674 | "kernel.\n"); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4675 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4676 | } |
| 4677 | /* fill the next cy_card structure available */ |
| 4678 | for (j = 0; j < NR_CARDS; j++) { |
| 4679 | if (cy_card[j].base_addr == 0) |
| 4680 | break; |
| 4681 | } |
| 4682 | if (j == NR_CARDS) { /* no more cy_cards available */ |
| 4683 | printk("Cyclom-Y/ISA found at 0x%lx ", |
| 4684 | (unsigned long)cy_isa_address); |
| 4685 | printk("but no more cards can be used .\n"); |
| 4686 | printk("Change NR_CARDS in cyclades.c and recompile " |
| 4687 | "kernel.\n"); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4688 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4689 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4690 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4691 | /* allocate IRQ */ |
| 4692 | if (request_irq(cy_isa_irq, cyy_interrupt, |
| 4693 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { |
| 4694 | printk("Cyclom-Y/ISA found at 0x%lx ", |
| 4695 | (unsigned long)cy_isa_address); |
| 4696 | printk("but could not allocate IRQ#%d.\n", cy_isa_irq); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4697 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4698 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4699 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4700 | /* set cy_card */ |
| 4701 | cy_card[j].base_addr = cy_isa_address; |
| 4702 | cy_card[j].ctl_addr = NULL; |
| 4703 | cy_card[j].irq = (int)cy_isa_irq; |
| 4704 | cy_card[j].bus_index = 0; |
| 4705 | cy_card[j].first_line = cy_next_channel; |
| 4706 | cy_card[j].num_chips = cy_isa_nchan / 4; |
| 4707 | nboard++; |
| 4708 | |
| 4709 | /* print message */ |
| 4710 | printk("Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d, ", |
| 4711 | j + 1, (unsigned long)cy_isa_address, |
| 4712 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), |
| 4713 | cy_isa_irq); |
| 4714 | printk("%d channels starting from port %d.\n", |
| 4715 | cy_isa_nchan, cy_next_channel); |
| 4716 | cy_next_channel += cy_isa_nchan; |
| 4717 | } |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4718 | return nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4719 | #else |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4720 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4721 | #endif /* CONFIG_ISA */ |
| 4722 | } /* cy_detect_isa */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4723 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4724 | static void plx_init(void __iomem * addr, uclong initctl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4725 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4726 | /* Reset PLX */ |
| 4727 | cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x40000000); |
| 4728 | udelay(100L); |
| 4729 | cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x40000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4730 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4731 | /* Reload Config. Registers from EEPROM */ |
| 4732 | cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x20000000); |
| 4733 | udelay(100L); |
| 4734 | cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x20000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4735 | } |
| 4736 | |
| 4737 | /* |
| 4738 | * --------------------------------------------------------------------- |
| 4739 | * cy_detect_pci() - Test PCI bus presence and Cyclom-Ye/PCI. |
| 4740 | * sets global variables and return the number of PCI boards found. |
| 4741 | * --------------------------------------------------------------------- |
| 4742 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4743 | static int __init cy_detect_pci(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4744 | { |
| 4745 | #ifdef CONFIG_PCI |
| 4746 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4747 | struct pci_dev *pdev = NULL; |
| 4748 | unsigned char cyy_rev_id; |
| 4749 | unsigned char cy_pci_irq = 0; |
| 4750 | uclong cy_pci_phys0, cy_pci_phys2; |
| 4751 | void __iomem *cy_pci_addr0, *cy_pci_addr2; |
| 4752 | unsigned short i, j, cy_pci_nchan, plx_ver; |
| 4753 | unsigned short device_id, dev_index = 0; |
| 4754 | uclong mailbox; |
| 4755 | uclong ZeIndex = 0; |
| 4756 | void __iomem *Ze_addr0[NR_CARDS], *Ze_addr2[NR_CARDS]; |
| 4757 | uclong Ze_phys0[NR_CARDS], Ze_phys2[NR_CARDS]; |
| 4758 | unsigned char Ze_irq[NR_CARDS]; |
| 4759 | struct pci_dev *Ze_pdev[NR_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4760 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4761 | for (i = 0; i < NR_CARDS; i++) { |
| 4762 | /* look for a Cyclades card by vendor and device id */ |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 4763 | while ((device_id = cy_pci_dev_id[dev_index].device) != 0) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4764 | if ((pdev = pci_get_device(PCI_VENDOR_ID_CYCLADES, |
| 4765 | device_id, pdev)) == NULL) { |
| 4766 | dev_index++; /* try next device id */ |
| 4767 | } else { |
| 4768 | break; /* found a board */ |
| 4769 | } |
| 4770 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4771 | |
| 4772 | if (device_id == 0) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4773 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4774 | |
| 4775 | if (pci_enable_device(pdev)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4776 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4777 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4778 | /* read PCI configuration area */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4779 | cy_pci_irq = pdev->irq; |
| 4780 | cy_pci_phys0 = pci_resource_start(pdev, 0); |
| 4781 | cy_pci_phys2 = pci_resource_start(pdev, 2); |
| 4782 | pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id); |
| 4783 | |
| 4784 | device_id &= ~PCI_DEVICE_ID_MASK; |
| 4785 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4786 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 4787 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4788 | #ifdef CY_PCI_DEBUG |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4789 | printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ", |
| 4790 | pdev->bus->number, pdev->devfn); |
| 4791 | printk("rev_id=%d) IRQ%d\n", |
| 4792 | cyy_rev_id, (int)cy_pci_irq); |
| 4793 | printk("Cyclom-Y/PCI:found winaddr=0x%lx " |
| 4794 | "ctladdr=0x%lx\n", |
| 4795 | (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4796 | #endif |
| 4797 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4798 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
| 4799 | printk(" Warning: PCI I/O bit incorrectly " |
| 4800 | "set. Ignoring it...\n"); |
| 4801 | pdev->resource[2].flags &= ~IORESOURCE_IO; |
| 4802 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4803 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4804 | /* Although we don't use this I/O region, we should |
| 4805 | request it from the kernel anyway, to avoid problems |
| 4806 | with other drivers accessing it. */ |
| 4807 | if (pci_request_regions(pdev, "Cyclom-Y") != 0) { |
| 4808 | printk(KERN_ERR "cyclades: failed to reserve " |
| 4809 | "PCI resources\n"); |
| 4810 | continue; |
| 4811 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4812 | #if defined(__alpha__) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4813 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ |
| 4814 | printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ", |
| 4815 | pdev->bus->number, pdev->devfn); |
| 4816 | printk("rev_id=%d) IRQ%d\n", |
| 4817 | cyy_rev_id, (int)cy_pci_irq); |
| 4818 | printk("Cyclom-Y/PCI:found winaddr=0x%lx " |
| 4819 | "ctladdr=0x%lx\n", |
| 4820 | (ulong)cy_pci_phys2, |
| 4821 | (ulong)cy_pci_phys0); |
| 4822 | printk("Cyclom-Y/PCI not supported for low " |
| 4823 | "addresses in Alpha systems.\n"); |
| 4824 | i--; |
| 4825 | continue; |
| 4826 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4827 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4828 | cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Yctl); |
| 4829 | cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ywin); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4830 | |
| 4831 | #ifdef CY_PCI_DEBUG |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4832 | printk("Cyclom-Y/PCI: relocate winaddr=0x%lx " |
| 4833 | "ctladdr=0x%lx\n", |
| 4834 | (u_long)cy_pci_addr2, (u_long)cy_pci_addr0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4835 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4836 | cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * |
| 4837 | cyy_init_card(cy_pci_addr2, 1)); |
| 4838 | if (cy_pci_nchan == 0) { |
| 4839 | printk("Cyclom-Y PCI host card with "); |
| 4840 | printk("no Serial-Modules at 0x%lx.\n", |
| 4841 | (ulong) cy_pci_phys2); |
| 4842 | i--; |
| 4843 | continue; |
| 4844 | } |
| 4845 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { |
| 4846 | printk("Cyclom-Y/PCI found at 0x%lx ", |
| 4847 | (ulong) cy_pci_phys2); |
| 4848 | printk("but no channels are available.\n"); |
| 4849 | printk("Change NR_PORTS in cyclades.c and " |
| 4850 | "recompile kernel.\n"); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4851 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4852 | } |
| 4853 | /* fill the next cy_card structure available */ |
| 4854 | for (j = 0; j < NR_CARDS; j++) { |
| 4855 | if (cy_card[j].base_addr == 0) |
| 4856 | break; |
| 4857 | } |
| 4858 | if (j == NR_CARDS) { /* no more cy_cards available */ |
| 4859 | printk("Cyclom-Y/PCI found at 0x%lx ", |
| 4860 | (ulong) cy_pci_phys2); |
| 4861 | printk("but no more cards can be used.\n"); |
| 4862 | printk("Change NR_CARDS in cyclades.c and " |
| 4863 | "recompile kernel.\n"); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4864 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4865 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4866 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4867 | /* allocate IRQ */ |
| 4868 | if (request_irq(cy_pci_irq, cyy_interrupt, |
| 4869 | IRQF_SHARED, "Cyclom-Y", &cy_card[j])) { |
| 4870 | printk("Cyclom-Y/PCI found at 0x%lx ", |
| 4871 | (ulong) cy_pci_phys2); |
| 4872 | printk("but could not allocate IRQ%d.\n", |
| 4873 | cy_pci_irq); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4874 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4875 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4876 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4877 | /* set cy_card */ |
| 4878 | cy_card[j].base_phys = (ulong) cy_pci_phys2; |
| 4879 | cy_card[j].ctl_phys = (ulong) cy_pci_phys0; |
| 4880 | cy_card[j].base_addr = cy_pci_addr2; |
| 4881 | cy_card[j].ctl_addr = cy_pci_addr0; |
| 4882 | cy_card[j].irq = (int)cy_pci_irq; |
| 4883 | cy_card[j].bus_index = 1; |
| 4884 | cy_card[j].first_line = cy_next_channel; |
| 4885 | cy_card[j].num_chips = cy_pci_nchan / 4; |
| 4886 | cy_card[j].pdev = pdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4887 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4888 | /* enable interrupts in the PCI interface */ |
| 4889 | plx_ver = cy_readb(cy_pci_addr2 + CyPLX_VER) & 0x0f; |
| 4890 | switch (plx_ver) { |
| 4891 | case PLX_9050: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4892 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4893 | cy_writeb(cy_pci_addr0 + 0x4c, 0x43); |
| 4894 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4895 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4896 | case PLX_9060: |
| 4897 | case PLX_9080: |
| 4898 | default: /* Old boards, use PLX_9060 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4899 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4900 | plx_init(cy_pci_addr0, 0x6c); |
| 4901 | /* For some yet unknown reason, once the PLX9060 reloads |
| 4902 | the EEPROM, the IRQ is lost and, thus, we have to |
| 4903 | re-write it to the PCI config. registers. |
| 4904 | This will remain here until we find a permanent |
| 4905 | fix. */ |
| 4906 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, |
| 4907 | cy_pci_irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4908 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4909 | cy_writew(cy_pci_addr0 + 0x68, |
| 4910 | cy_readw(cy_pci_addr0 + |
| 4911 | 0x68) | 0x0900); |
| 4912 | break; |
| 4913 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4914 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4915 | /* print message */ |
| 4916 | printk("Cyclom-Y/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", |
| 4917 | j + 1, (ulong)cy_pci_phys2, |
| 4918 | (ulong) (cy_pci_phys2 + CyPCI_Ywin - 1), |
| 4919 | (int)cy_pci_irq); |
| 4920 | printk("%d channels starting from port %d.\n", |
| 4921 | cy_pci_nchan, cy_next_channel); |
| 4922 | |
| 4923 | cy_next_channel += cy_pci_nchan; |
| 4924 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { |
| 4925 | /* print message */ |
| 4926 | printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ", |
| 4927 | pdev->bus->number, pdev->devfn); |
| 4928 | printk("rev_id=%d) IRQ%d\n", |
| 4929 | cyy_rev_id, (int)cy_pci_irq); |
| 4930 | printk("Cyclades-Z/PCI: found winaddr=0x%lx " |
| 4931 | "ctladdr=0x%lx\n", |
| 4932 | (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); |
| 4933 | printk("Cyclades-Z/PCI not supported for low " |
| 4934 | "addresses\n"); |
| 4935 | break; |
| 4936 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4937 | #ifdef CY_PCI_DEBUG |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4938 | printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ", |
| 4939 | pdev->bus->number, pdev->devfn); |
| 4940 | printk("rev_id=%d) IRQ%d\n", |
| 4941 | cyy_rev_id, (int)cy_pci_irq); |
| 4942 | printk("Cyclades-Z/PCI: found winaddr=0x%lx " |
| 4943 | "ctladdr=0x%lx\n", |
| 4944 | (ulong) cy_pci_phys2, (ulong) cy_pci_phys0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4945 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4946 | cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Zctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4947 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4948 | /* Disable interrupts on the PLX before resetting it */ |
| 4949 | cy_writew(cy_pci_addr0 + 0x68, |
| 4950 | cy_readw(cy_pci_addr0 + 0x68) & ~0x0900); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4951 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4952 | plx_init(cy_pci_addr0, 0x6c); |
| 4953 | /* For some yet unknown reason, once the PLX9060 reloads |
| 4954 | the EEPROM, the IRQ is lost and, thus, we have to |
| 4955 | re-write it to the PCI config. registers. |
| 4956 | This will remain here until we find a permanent |
| 4957 | fix. */ |
| 4958 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, |
| 4959 | cy_pci_irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4960 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4961 | mailbox = |
| 4962 | (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *) |
| 4963 | cy_pci_addr0)->mail_box_0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4964 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4965 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
| 4966 | printk(" Warning: PCI I/O bit incorrectly " |
| 4967 | "set. Ignoring it...\n"); |
| 4968 | pdev->resource[2].flags &= ~IORESOURCE_IO; |
| 4969 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4970 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4971 | /* Although we don't use this I/O region, we should |
| 4972 | request it from the kernel anyway, to avoid problems |
| 4973 | with other drivers accessing it. */ |
| 4974 | if (pci_request_regions(pdev, "Cyclades-Z") != 0) { |
| 4975 | printk(KERN_ERR "cyclades: failed to reserve " |
| 4976 | "PCI resources\n"); |
| 4977 | continue; |
| 4978 | } |
| 4979 | |
| 4980 | if (mailbox == ZE_V1) { |
| 4981 | cy_pci_addr2 = ioremap(cy_pci_phys2, |
| 4982 | CyPCI_Ze_win); |
| 4983 | if (ZeIndex == NR_CARDS) { |
| 4984 | printk("Cyclades-Ze/PCI found at " |
| 4985 | "0x%lx but no more cards can " |
| 4986 | "be used.\nChange NR_CARDS in " |
| 4987 | "cyclades.c and recompile " |
| 4988 | "kernel.\n", |
| 4989 | (ulong)cy_pci_phys2); |
| 4990 | } else { |
| 4991 | Ze_phys0[ZeIndex] = cy_pci_phys0; |
| 4992 | Ze_phys2[ZeIndex] = cy_pci_phys2; |
| 4993 | Ze_addr0[ZeIndex] = cy_pci_addr0; |
| 4994 | Ze_addr2[ZeIndex] = cy_pci_addr2; |
| 4995 | Ze_irq[ZeIndex] = cy_pci_irq; |
| 4996 | Ze_pdev[ZeIndex] = pdev; |
| 4997 | ZeIndex++; |
| 4998 | } |
| 4999 | i--; |
| 5000 | continue; |
| 5001 | } else { |
| 5002 | cy_pci_addr2 = ioremap(cy_pci_phys2,CyPCI_Zwin); |
| 5003 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5004 | |
| 5005 | #ifdef CY_PCI_DEBUG |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5006 | printk("Cyclades-Z/PCI: relocate winaddr=0x%lx " |
| 5007 | "ctladdr=0x%lx\n", |
| 5008 | (ulong) cy_pci_addr2, (ulong) cy_pci_addr0); |
| 5009 | if (mailbox == ZO_V1) { |
| 5010 | cy_writel(&((struct RUNTIME_9060 *) |
| 5011 | (cy_pci_addr0))->loc_addr_base, |
| 5012 | WIN_CREG); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5013 | PAUSE; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5014 | printk("Cyclades-8Zo/PCI: FPGA id %lx, ver " |
| 5015 | "%lx\n", (ulong) (0xff & |
| 5016 | cy_readl(&((struct CUSTOM_REG *) |
| 5017 | (cy_pci_addr2))->fpga_id)), |
| 5018 | (ulong)(0xff & |
| 5019 | cy_readl(&((struct CUSTOM_REG *) |
| 5020 | (cy_pci_addr2))-> |
| 5021 | fpga_version))); |
| 5022 | cy_writel(&((struct RUNTIME_9060 *) |
| 5023 | (cy_pci_addr0))->loc_addr_base, |
| 5024 | WIN_RAM); |
| 5025 | } else { |
| 5026 | printk("Cyclades-Z/PCI: New Cyclades-Z board. " |
| 5027 | "FPGA not loaded\n"); |
| 5028 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5029 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5030 | /* The following clears the firmware id word. This |
| 5031 | ensures that the driver will not attempt to talk to |
| 5032 | the board until it has been properly initialized. |
| 5033 | */ |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5034 | PAUSE; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5035 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) |
| 5036 | cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5037 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5038 | /* This must be a Cyclades-8Zo/PCI. The extendable |
| 5039 | version will have a different device_id and will |
| 5040 | be allocated its maximum number of ports. */ |
| 5041 | cy_pci_nchan = 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5042 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5043 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { |
| 5044 | printk("Cyclades-8Zo/PCI found at 0x%lx but" |
| 5045 | "no channels are available.\nChange " |
| 5046 | "NR_PORTS in cyclades.c and recompile " |
| 5047 | "kernel.\n", (ulong)cy_pci_phys2); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5048 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5049 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5050 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5051 | /* fill the next cy_card structure available */ |
| 5052 | for (j = 0; j < NR_CARDS; j++) { |
| 5053 | if (cy_card[j].base_addr == 0) |
| 5054 | break; |
| 5055 | } |
| 5056 | if (j == NR_CARDS) { /* no more cy_cards available */ |
| 5057 | printk("Cyclades-8Zo/PCI found at 0x%lx but" |
| 5058 | "no more cards can be used.\nChange " |
| 5059 | "NR_CARDS in cyclades.c and recompile " |
| 5060 | "kernel.\n", (ulong)cy_pci_phys2); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5061 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5062 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5063 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5064 | /* allocate IRQ only if board has an IRQ */ |
| 5065 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { |
| 5066 | if (request_irq(cy_pci_irq, cyz_interrupt, |
| 5067 | IRQF_SHARED, "Cyclades-Z", |
| 5068 | &cy_card[j])) { |
| 5069 | printk("Cyclom-8Zo/PCI found at 0x%lx " |
| 5070 | "but could not allocate " |
| 5071 | "IRQ%d.\n", (ulong)cy_pci_phys2, |
| 5072 | cy_pci_irq); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5073 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5074 | } |
| 5075 | } |
| 5076 | #endif /* CONFIG_CYZ_INTR */ |
| 5077 | |
| 5078 | /* set cy_card */ |
| 5079 | cy_card[j].base_phys = cy_pci_phys2; |
| 5080 | cy_card[j].ctl_phys = cy_pci_phys0; |
| 5081 | cy_card[j].base_addr = cy_pci_addr2; |
| 5082 | cy_card[j].ctl_addr = cy_pci_addr0; |
| 5083 | cy_card[j].irq = (int)cy_pci_irq; |
| 5084 | cy_card[j].bus_index = 1; |
| 5085 | cy_card[j].first_line = cy_next_channel; |
| 5086 | cy_card[j].num_chips = -1; |
| 5087 | cy_card[j].pdev = pdev; |
| 5088 | |
| 5089 | /* print message */ |
| 5090 | #ifdef CONFIG_CYZ_INTR |
| 5091 | /* don't report IRQ if board is no IRQ */ |
| 5092 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) |
| 5093 | printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, " |
| 5094 | "IRQ%d, ", j + 1, (ulong)cy_pci_phys2, |
| 5095 | (ulong) (cy_pci_phys2 + CyPCI_Zwin - 1), |
| 5096 | (int)cy_pci_irq); |
| 5097 | else |
| 5098 | #endif /* CONFIG_CYZ_INTR */ |
| 5099 | printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, ", |
| 5100 | j + 1, (ulong)cy_pci_phys2, |
| 5101 | (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1)); |
| 5102 | |
| 5103 | printk("%d channels starting from port %d.\n", |
| 5104 | cy_pci_nchan, cy_next_channel); |
| 5105 | cy_next_channel += cy_pci_nchan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5106 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5107 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5108 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5109 | for (; ZeIndex != 0 && i < NR_CARDS; i++) { |
| 5110 | cy_pci_phys0 = Ze_phys0[0]; |
| 5111 | cy_pci_phys2 = Ze_phys2[0]; |
| 5112 | cy_pci_addr0 = Ze_addr0[0]; |
| 5113 | cy_pci_addr2 = Ze_addr2[0]; |
| 5114 | cy_pci_irq = Ze_irq[0]; |
| 5115 | pdev = Ze_pdev[0]; |
| 5116 | for (j = 0; j < ZeIndex - 1; j++) { |
| 5117 | Ze_phys0[j] = Ze_phys0[j + 1]; |
| 5118 | Ze_phys2[j] = Ze_phys2[j + 1]; |
| 5119 | Ze_addr0[j] = Ze_addr0[j + 1]; |
| 5120 | Ze_addr2[j] = Ze_addr2[j + 1]; |
| 5121 | Ze_irq[j] = Ze_irq[j + 1]; |
| 5122 | Ze_pdev[j] = Ze_pdev[j + 1]; |
| 5123 | } |
| 5124 | ZeIndex--; |
| 5125 | mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *) |
| 5126 | cy_pci_addr0)->mail_box_0); |
| 5127 | #ifdef CY_PCI_DEBUG |
| 5128 | printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", |
| 5129 | (ulong)cy_pci_addr2, (ulong)cy_pci_addr0); |
| 5130 | printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not " |
| 5131 | "loaded\n"); |
| 5132 | #endif |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5133 | PAUSE; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5134 | /* This must be the new Cyclades-Ze/PCI. */ |
| 5135 | cy_pci_nchan = ZE_V1_NPORTS; |
| 5136 | |
| 5137 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { |
| 5138 | printk("Cyclades-Ze/PCI found at 0x%lx but no channels " |
| 5139 | "are available.\nChange NR_PORTS in cyclades.c " |
| 5140 | "and recompile kernel.\n", |
| 5141 | (ulong) cy_pci_phys2); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5142 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5143 | } |
| 5144 | |
| 5145 | /* fill the next cy_card structure available */ |
| 5146 | for (j = 0; j < NR_CARDS; j++) { |
| 5147 | if (cy_card[j].base_addr == 0) |
| 5148 | break; |
| 5149 | } |
| 5150 | if (j == NR_CARDS) { /* no more cy_cards available */ |
| 5151 | printk("Cyclades-Ze/PCI found at 0x%lx but no more " |
| 5152 | "cards can be used.\nChange NR_CARDS in " |
| 5153 | "cyclades.c and recompile kernel.\n", |
| 5154 | (ulong) cy_pci_phys2); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5155 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5156 | } |
| 5157 | #ifdef CONFIG_CYZ_INTR |
| 5158 | /* allocate IRQ only if board has an IRQ */ |
| 5159 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { |
| 5160 | if (request_irq(cy_pci_irq, cyz_interrupt, |
| 5161 | IRQF_SHARED, "Cyclades-Z", |
| 5162 | &cy_card[j])) { |
| 5163 | printk("Cyclom-Ze/PCI found at 0x%lx ", |
| 5164 | (ulong) cy_pci_phys2); |
| 5165 | printk("but could not allocate IRQ%d.\n", |
| 5166 | cy_pci_irq); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5167 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5168 | } |
| 5169 | } |
| 5170 | #endif /* CONFIG_CYZ_INTR */ |
| 5171 | |
| 5172 | /* set cy_card */ |
| 5173 | cy_card[j].base_phys = cy_pci_phys2; |
| 5174 | cy_card[j].ctl_phys = cy_pci_phys0; |
| 5175 | cy_card[j].base_addr = cy_pci_addr2; |
| 5176 | cy_card[j].ctl_addr = cy_pci_addr0; |
| 5177 | cy_card[j].irq = (int)cy_pci_irq; |
| 5178 | cy_card[j].bus_index = 1; |
| 5179 | cy_card[j].first_line = cy_next_channel; |
| 5180 | cy_card[j].num_chips = -1; |
| 5181 | cy_card[j].pdev = pdev; |
| 5182 | |
| 5183 | /* print message */ |
| 5184 | #ifdef CONFIG_CYZ_INTR |
| 5185 | /* don't report IRQ if board is no IRQ */ |
| 5186 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) |
| 5187 | printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", |
| 5188 | j + 1, (ulong) cy_pci_phys2, |
| 5189 | (ulong) (cy_pci_phys2 + CyPCI_Ze_win - 1), |
| 5190 | (int)cy_pci_irq); |
| 5191 | else |
| 5192 | #endif /* CONFIG_CYZ_INTR */ |
| 5193 | printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, ", |
| 5194 | j + 1, (ulong) cy_pci_phys2, |
| 5195 | (ulong) (cy_pci_phys2 + CyPCI_Ze_win - 1)); |
| 5196 | |
| 5197 | printk("%d channels starting from port %d.\n", |
| 5198 | cy_pci_nchan, cy_next_channel); |
| 5199 | cy_next_channel += cy_pci_nchan; |
| 5200 | } |
| 5201 | if (ZeIndex != 0) { |
| 5202 | printk("Cyclades-Ze/PCI found at 0x%x but no more cards can be " |
| 5203 | "used.\nChange NR_CARDS in cyclades.c and recompile " |
| 5204 | "kernel.\n", (unsigned int)Ze_phys2[0]); |
| 5205 | } |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5206 | return i; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5207 | #else |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5208 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5209 | #endif /* ifdef CONFIG_PCI */ |
| 5210 | } /* cy_detect_pci */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5211 | |
| 5212 | /* |
| 5213 | * This routine prints out the appropriate serial driver version number |
| 5214 | * and identifies which options were configured into this driver. |
| 5215 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5216 | static inline void show_version(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5217 | { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5218 | printk("Cyclades driver " CY_VERSION "\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5219 | printk(" built %s %s\n", __DATE__, __TIME__); |
| 5220 | } /* show_version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5221 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5222 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5223 | cyclades_get_proc_info(char *buf, char **start, off_t offset, int length, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5224 | int *eof, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5225 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5226 | struct cyclades_port *info; |
| 5227 | int i; |
| 5228 | int len = 0; |
| 5229 | off_t begin = 0; |
| 5230 | off_t pos = 0; |
| 5231 | int size; |
| 5232 | __u32 cur_jifs = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5233 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5234 | size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn " |
| 5235 | "IdleIn Overruns Ldisc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5236 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5237 | pos += size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5238 | len += size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5239 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5240 | /* Output one line for each known port */ |
| 5241 | for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) { |
| 5242 | info = &cy_port[i]; |
| 5243 | |
| 5244 | if (info->count) |
| 5245 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " |
| 5246 | "%8lu %9lu %6ld\n", info->line, |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5247 | (cur_jifs - info->idle_stats.in_use) / HZ, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5248 | info->idle_stats.xmit_bytes, |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5249 | (cur_jifs - info->idle_stats.xmit_idle) / HZ, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5250 | info->idle_stats.recv_bytes, |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5251 | (cur_jifs - info->idle_stats.recv_idle) / HZ, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5252 | info->idle_stats.overruns, |
| 5253 | (long)info->tty->ldisc.num); |
| 5254 | else |
| 5255 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " |
| 5256 | "%8lu %9lu %6ld\n", |
| 5257 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); |
| 5258 | len += size; |
| 5259 | pos = begin + len; |
| 5260 | |
| 5261 | if (pos < offset) { |
| 5262 | len = 0; |
| 5263 | begin = pos; |
| 5264 | } |
| 5265 | if (pos > offset + length) |
| 5266 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5267 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5268 | *eof = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5269 | done: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5270 | *start = buf + (offset - begin); /* Start of wanted data */ |
| 5271 | len -= (offset - begin); /* Start slop */ |
| 5272 | if (len > length) |
| 5273 | len = length; /* Ending slop */ |
| 5274 | if (len < 0) |
| 5275 | len = 0; |
| 5276 | return len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5277 | } |
| 5278 | |
| 5279 | /* The serial driver boot-time initialization code! |
| 5280 | Hardware I/O ports are mapped to character special devices on a |
| 5281 | first found, first allocated manner. That is, this code searches |
| 5282 | for Cyclom cards in the system. As each is found, it is probed |
| 5283 | to discover how many chips (and thus how many ports) are present. |
| 5284 | These ports are mapped to the tty ports 32 and upward in monotonic |
| 5285 | fashion. If an 8-port card is replaced with a 16-port card, the |
| 5286 | port mapping on a following card will shift. |
| 5287 | |
| 5288 | This approach is different from what is used in the other serial |
| 5289 | device driver because the Cyclom is more properly a multiplexer, |
| 5290 | not just an aggregation of serial ports on one card. |
| 5291 | |
| 5292 | If there are more cards with more ports than have been |
| 5293 | statically allocated above, a warning is printed and the |
| 5294 | extra ports are ignored. |
| 5295 | */ |
| 5296 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 5297 | static const struct tty_operations cy_ops = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5298 | .open = cy_open, |
| 5299 | .close = cy_close, |
| 5300 | .write = cy_write, |
| 5301 | .put_char = cy_put_char, |
| 5302 | .flush_chars = cy_flush_chars, |
| 5303 | .write_room = cy_write_room, |
| 5304 | .chars_in_buffer = cy_chars_in_buffer, |
| 5305 | .flush_buffer = cy_flush_buffer, |
| 5306 | .ioctl = cy_ioctl, |
| 5307 | .throttle = cy_throttle, |
| 5308 | .unthrottle = cy_unthrottle, |
| 5309 | .set_termios = cy_set_termios, |
| 5310 | .stop = cy_stop, |
| 5311 | .start = cy_start, |
| 5312 | .hangup = cy_hangup, |
| 5313 | .break_ctl = cy_break, |
| 5314 | .wait_until_sent = cy_wait_until_sent, |
| 5315 | .read_proc = cyclades_get_proc_info, |
| 5316 | .tiocmget = cy_tiocmget, |
| 5317 | .tiocmset = cy_tiocmset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5318 | }; |
| 5319 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5320 | static int __init cy_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5321 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5322 | struct cyclades_port *info; |
| 5323 | struct cyclades_card *cinfo; |
| 5324 | int number_z_boards = 0; |
| 5325 | int board, port, i, index; |
| 5326 | unsigned long mailbox; |
| 5327 | unsigned short chip_number; |
| 5328 | int nports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5329 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5330 | cy_serial_driver = alloc_tty_driver(NR_PORTS); |
| 5331 | if (!cy_serial_driver) |
| 5332 | return -ENOMEM; |
| 5333 | show_version(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5334 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5335 | /* Initialize the tty_driver structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5336 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5337 | cy_serial_driver->owner = THIS_MODULE; |
| 5338 | cy_serial_driver->driver_name = "cyclades"; |
| 5339 | cy_serial_driver->name = "ttyC"; |
| 5340 | cy_serial_driver->major = CYCLADES_MAJOR; |
| 5341 | cy_serial_driver->minor_start = 0; |
| 5342 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 5343 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; |
| 5344 | cy_serial_driver->init_termios = tty_std_termios; |
| 5345 | cy_serial_driver->init_termios.c_cflag = |
| 5346 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
| 5347 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; |
| 5348 | tty_set_operations(cy_serial_driver, &cy_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5349 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5350 | if (tty_register_driver(cy_serial_driver)) |
| 5351 | panic("Couldn't register Cyclades serial driver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5352 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5353 | for (i = 0; i < NR_CARDS; i++) { |
| 5354 | /* base_addr=0 indicates board not found */ |
| 5355 | cy_card[i].base_addr = NULL; |
| 5356 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5357 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5358 | /* the code below is responsible to find the boards. Each different |
| 5359 | type of board has its own detection routine. If a board is found, |
| 5360 | the next cy_card structure available is set by the detection |
| 5361 | routine. These functions are responsible for checking the |
| 5362 | availability of cy_card and cy_port data structures and updating |
| 5363 | the cy_next_channel. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5364 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5365 | /* look for isa boards */ |
| 5366 | cy_isa_nboard = cy_detect_isa(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5367 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5368 | /* look for pci boards */ |
| 5369 | cy_pci_nboard = cy_detect_pci(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5370 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5371 | cy_nboard = cy_isa_nboard + cy_pci_nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5372 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5373 | /* invalidate remaining cy_card structures */ |
| 5374 | for (i = 0; i < NR_CARDS; i++) { |
| 5375 | if (cy_card[i].base_addr == 0) { |
| 5376 | cy_card[i].first_line = -1; |
| 5377 | cy_card[i].ctl_addr = NULL; |
| 5378 | cy_card[i].irq = 0; |
| 5379 | cy_card[i].bus_index = 0; |
| 5380 | cy_card[i].first_line = 0; |
| 5381 | cy_card[i].num_chips = 0; |
| 5382 | } |
| 5383 | } |
| 5384 | /* invalidate remaining cy_port structures */ |
| 5385 | for (i = cy_next_channel; i < NR_PORTS; i++) { |
| 5386 | cy_port[i].line = -1; |
| 5387 | cy_port[i].magic = -1; |
| 5388 | } |
| 5389 | |
| 5390 | /* initialize per-port data structures for each valid board found */ |
| 5391 | for (board = 0; board < cy_nboard; board++) { |
| 5392 | cinfo = &cy_card[board]; |
| 5393 | if (cinfo->num_chips == -1) { /* Cyclades-Z */ |
| 5394 | number_z_boards++; |
| 5395 | mailbox = cy_readl(&((struct RUNTIME_9060 __iomem *) |
| 5396 | cy_card[board].ctl_addr)-> |
| 5397 | mail_box_0); |
| 5398 | nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; |
| 5399 | cinfo->intr_enabled = 0; |
| 5400 | cinfo->nports = 0; /* Will be correctly set later, after |
| 5401 | Z FW is loaded */ |
| 5402 | spin_lock_init(&cinfo->card_lock); |
| 5403 | for (port = cinfo->first_line; |
| 5404 | port < cinfo->first_line + nports; port++) { |
| 5405 | info = &cy_port[port]; |
| 5406 | info->magic = CYCLADES_MAGIC; |
| 5407 | info->type = PORT_STARTECH; |
| 5408 | info->card = board; |
| 5409 | info->line = port; |
| 5410 | info->chip_rev = 0; |
| 5411 | info->flags = STD_COM_FLAGS; |
| 5412 | info->tty = NULL; |
| 5413 | if (mailbox == ZO_V1) |
| 5414 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
| 5415 | else |
| 5416 | info->xmit_fifo_size = |
| 5417 | 4 * CYZ_FIFO_SIZE; |
| 5418 | info->cor1 = 0; |
| 5419 | info->cor2 = 0; |
| 5420 | info->cor3 = 0; |
| 5421 | info->cor4 = 0; |
| 5422 | info->cor5 = 0; |
| 5423 | info->tbpr = 0; |
| 5424 | info->tco = 0; |
| 5425 | info->rbpr = 0; |
| 5426 | info->rco = 0; |
| 5427 | info->custom_divisor = 0; |
| 5428 | info->close_delay = 5 * HZ / 10; |
| 5429 | info->closing_wait = CLOSING_WAIT_DELAY; |
| 5430 | info->icount.cts = info->icount.dsr = |
| 5431 | info->icount.rng = info->icount.dcd = 0; |
| 5432 | info->icount.rx = info->icount.tx = 0; |
| 5433 | info->icount.frame = info->icount.parity = 0; |
| 5434 | info->icount.overrun = info->icount.brk = 0; |
| 5435 | info->x_char = 0; |
| 5436 | info->event = 0; |
| 5437 | info->count = 0; |
| 5438 | info->blocked_open = 0; |
| 5439 | info->default_threshold = 0; |
| 5440 | info->default_timeout = 0; |
| 5441 | INIT_WORK(&info->tqueue, do_softint); |
| 5442 | init_waitqueue_head(&info->open_wait); |
| 5443 | init_waitqueue_head(&info->close_wait); |
| 5444 | init_waitqueue_head(&info->shutdown_wait); |
| 5445 | init_waitqueue_head(&info->delta_msr_wait); |
| 5446 | /* info->session */ |
| 5447 | /* info->pgrp */ |
| 5448 | info->read_status_mask = 0; |
| 5449 | /* info->timeout */ |
| 5450 | /* Bentson's vars */ |
| 5451 | info->jiffies[0] = 0; |
| 5452 | info->jiffies[1] = 0; |
| 5453 | info->jiffies[2] = 0; |
| 5454 | info->rflush_count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5455 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5456 | init_timer(&cyz_rx_full_timer[port]); |
| 5457 | cyz_rx_full_timer[port].function = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5458 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5459 | } |
| 5460 | continue; |
| 5461 | } else { /* Cyclom-Y of some kind */ |
| 5462 | index = cinfo->bus_index; |
| 5463 | spin_lock_init(&cinfo->card_lock); |
| 5464 | cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; |
| 5465 | for (port = cinfo->first_line; |
| 5466 | port < cinfo->first_line + cinfo->nports; port++) { |
| 5467 | info = &cy_port[port]; |
| 5468 | info->magic = CYCLADES_MAGIC; |
| 5469 | info->type = PORT_CIRRUS; |
| 5470 | info->card = board; |
| 5471 | info->line = port; |
| 5472 | info->flags = STD_COM_FLAGS; |
| 5473 | info->tty = NULL; |
| 5474 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
| 5475 | info->cor1 = |
| 5476 | CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
| 5477 | info->cor2 = CyETC; |
| 5478 | info->cor3 = 0x08; /* _very_ small rcv threshold */ |
| 5479 | info->cor4 = 0; |
| 5480 | info->cor5 = 0; |
| 5481 | info->custom_divisor = 0; |
| 5482 | info->close_delay = 5 * HZ / 10; |
| 5483 | info->closing_wait = CLOSING_WAIT_DELAY; |
| 5484 | info->icount.cts = info->icount.dsr = |
| 5485 | info->icount.rng = info->icount.dcd = 0; |
| 5486 | info->icount.rx = info->icount.tx = 0; |
| 5487 | info->icount.frame = info->icount.parity = 0; |
| 5488 | info->icount.overrun = info->icount.brk = 0; |
| 5489 | chip_number = (port - cinfo->first_line) / 4; |
| 5490 | if ((info->chip_rev = |
| 5491 | cy_readb(cinfo->base_addr + |
| 5492 | (cy_chip_offset[chip_number] << |
| 5493 | index) + (CyGFRCR << index))) >= |
| 5494 | CD1400_REV_J) { |
| 5495 | /* It is a CD1400 rev. J or later */ |
| 5496 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ |
| 5497 | info->tco = baud_co_60[13]; /* Tx CO */ |
| 5498 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ |
| 5499 | info->rco = baud_co_60[13]; /* Rx CO */ |
| 5500 | info->rflow = 0; |
| 5501 | info->rtsdtr_inv = 1; |
| 5502 | } else { |
| 5503 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ |
| 5504 | info->tco = baud_co_25[13]; /* Tx CO */ |
| 5505 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ |
| 5506 | info->rco = baud_co_25[13]; /* Rx CO */ |
| 5507 | info->rflow = 0; |
| 5508 | info->rtsdtr_inv = 0; |
| 5509 | } |
| 5510 | info->x_char = 0; |
| 5511 | info->event = 0; |
| 5512 | info->count = 0; |
| 5513 | info->blocked_open = 0; |
| 5514 | info->default_threshold = 0; |
| 5515 | info->default_timeout = 0; |
| 5516 | INIT_WORK(&info->tqueue, do_softint); |
| 5517 | init_waitqueue_head(&info->open_wait); |
| 5518 | init_waitqueue_head(&info->close_wait); |
| 5519 | init_waitqueue_head(&info->shutdown_wait); |
| 5520 | init_waitqueue_head(&info->delta_msr_wait); |
| 5521 | /* info->session */ |
| 5522 | /* info->pgrp */ |
| 5523 | info->read_status_mask = |
| 5524 | CyTIMEOUT | CySPECHAR | CyBREAK |
| 5525 | | CyPARITY | CyFRAME | CyOVERRUN; |
| 5526 | /* info->timeout */ |
| 5527 | } |
| 5528 | } |
| 5529 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5530 | |
| 5531 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5532 | if (number_z_boards && !cyz_timeron) { |
| 5533 | cyz_timeron++; |
| 5534 | cyz_timerlist.expires = jiffies + 1; |
| 5535 | add_timer(&cyz_timerlist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5536 | #ifdef CY_PCI_DEBUG |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5537 | printk("Cyclades-Z polling initialized\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5538 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5539 | } |
| 5540 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5541 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5542 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5543 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5544 | } /* cy_init */ |
| 5545 | |
| 5546 | static void __exit cy_cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5547 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5548 | int i, e1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5549 | |
| 5550 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5551 | if (cyz_timeron){ |
| 5552 | cyz_timeron = 0; |
| 5553 | del_timer(&cyz_timerlist); |
| 5554 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5555 | #endif /* CONFIG_CYZ_INTR */ |
| 5556 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5557 | if ((e1 = tty_unregister_driver(cy_serial_driver))) |
| 5558 | printk("cyc: failed to unregister Cyclades serial driver(%d)\n", |
| 5559 | e1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5560 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5561 | put_tty_driver(cy_serial_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5562 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5563 | for (i = 0; i < NR_CARDS; i++) { |
| 5564 | if (cy_card[i].base_addr) { |
| 5565 | iounmap(cy_card[i].base_addr); |
| 5566 | if (cy_card[i].ctl_addr) |
| 5567 | iounmap(cy_card[i].ctl_addr); |
| 5568 | if (cy_card[i].irq |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5569 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5570 | && cy_card[i].num_chips != -1 /* not a Z card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5571 | #endif /* CONFIG_CYZ_INTR */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5572 | ) |
| 5573 | free_irq(cy_card[i].irq, &cy_card[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5574 | #ifdef CONFIG_PCI |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5575 | if (cy_card[i].pdev) |
| 5576 | pci_release_regions(cy_card[i].pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5577 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5578 | } |
| 5579 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5580 | } /* cy_cleanup_module */ |
| 5581 | |
| 5582 | module_init(cy_init); |
| 5583 | module_exit(cy_cleanup_module); |
| 5584 | |
| 5585 | MODULE_LICENSE("GPL"); |