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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | /* |
| 628 | * Include section |
| 629 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | #include <linux/module.h> |
| 631 | #include <linux/errno.h> |
| 632 | #include <linux/signal.h> |
| 633 | #include <linux/sched.h> |
| 634 | #include <linux/timer.h> |
| 635 | #include <linux/interrupt.h> |
| 636 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 637 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | #include <linux/serial.h> |
| 639 | #include <linux/major.h> |
| 640 | #include <linux/string.h> |
| 641 | #include <linux/fcntl.h> |
| 642 | #include <linux/ptrace.h> |
| 643 | #include <linux/cyclades.h> |
| 644 | #include <linux/mm.h> |
| 645 | #include <linux/ioport.h> |
| 646 | #include <linux/init.h> |
| 647 | #include <linux/delay.h> |
| 648 | #include <linux/spinlock.h> |
| 649 | #include <linux/bitops.h> |
| 650 | |
| 651 | #include <asm/system.h> |
| 652 | #include <asm/io.h> |
| 653 | #include <asm/irq.h> |
| 654 | #include <asm/uaccess.h> |
| 655 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | #include <linux/kernel.h> |
| 657 | #include <linux/pci.h> |
| 658 | |
| 659 | #include <linux/stat.h> |
| 660 | #include <linux/proc_fs.h> |
| 661 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 662 | static void cy_throttle(struct tty_struct *tty); |
| 663 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | |
| 665 | #define IS_CYC_Z(card) ((card).num_chips == -1) |
| 666 | |
| 667 | #define Z_FPGA_CHECK(card) \ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 668 | ((readl(&((struct RUNTIME_9060 __iomem *) \ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 669 | ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 671 | #define ISZLOADED(card) (((ZO_V1==readl(&((struct RUNTIME_9060 __iomem *) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | ((card).ctl_addr))->mail_box_0)) || \ |
| 673 | Z_FPGA_CHECK(card)) && \ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 674 | (ZFIRM_ID==readl(&((struct FIRM_ID __iomem *) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | ((card).base_addr+ID_ADDRESS))->signature))) |
| 676 | |
| 677 | #ifndef SERIAL_XMIT_SIZE |
| 678 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) |
| 679 | #endif |
| 680 | #define WAKEUP_CHARS 256 |
| 681 | |
| 682 | #define STD_COM_FLAGS (0) |
| 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | static struct tty_driver *cy_serial_driver; |
| 685 | |
| 686 | #ifdef CONFIG_ISA |
| 687 | /* This is the address lookup table. The driver will probe for |
| 688 | Cyclom-Y/ISA boards at all addresses in here. If you want the |
| 689 | driver to probe addresses at a different address, add it to |
| 690 | this table. If the driver is probing some other board and |
| 691 | causing problems, remove the offending address from this table. |
| 692 | The cy_setup function extracts additional addresses from the |
| 693 | boot options line. The form is "cyclades=address,address..." |
| 694 | */ |
| 695 | |
| 696 | static unsigned int cy_isa_addresses[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 697 | 0xD0000, |
| 698 | 0xD2000, |
| 699 | 0xD4000, |
| 700 | 0xD6000, |
| 701 | 0xD8000, |
| 702 | 0xDA000, |
| 703 | 0xDC000, |
| 704 | 0xDE000, |
| 705 | 0, 0, 0, 0, 0, 0, 0, 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | }; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 707 | |
Tobias Klauser | fe97107 | 2006-01-09 20:54:02 -0800 | [diff] [blame] | 708 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | |
| 710 | #ifdef MODULE |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 711 | static long maddr[NR_CARDS]; |
| 712 | static int irq[NR_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
| 714 | module_param_array(maddr, long, NULL, 0); |
| 715 | module_param_array(irq, int, NULL, 0); |
| 716 | #endif |
| 717 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 718 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
| 720 | /* This is the per-card data structure containing address, irq, number of |
| 721 | channels, etc. This driver supports a maximum of NR_CARDS cards. |
| 722 | */ |
| 723 | static struct cyclades_card cy_card[NR_CARDS]; |
| 724 | |
| 725 | /* This is the per-channel data structure containing pointers, flags |
| 726 | and variables for the port. This driver supports a maximum of NR_PORTS. |
| 727 | */ |
| 728 | static struct cyclades_port cy_port[NR_PORTS]; |
| 729 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 730 | static int cy_next_channel; /* next minor available */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | |
| 732 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | * This is used to look up the divisor speeds and the timeouts |
| 734 | * We're normally limited to 15 distinct baud rates. The extra |
| 735 | * are accessed via settings in info->flags. |
| 736 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
| 737 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, |
| 738 | * HI VHI |
| 739 | * 20 |
| 740 | */ |
| 741 | static int baud_table[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 742 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
| 743 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, |
| 744 | 230400, 0 |
| 745 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 747 | static char baud_co_25[] = { /* 25 MHz clock option table */ |
| 748 | /* value => 00 01 02 03 04 */ |
| 749 | /* divide by 8 32 128 512 2048 */ |
| 750 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, |
| 751 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| 752 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 754 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
| 755 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
| 756 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 |
| 757 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 759 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
| 760 | /* value => 00 01 02 03 04 */ |
| 761 | /* divide by 8 32 128 512 2048 */ |
| 762 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, |
| 763 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 764 | 0x00 |
| 765 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 767 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
| 768 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
| 769 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, |
| 770 | 0x21 |
| 771 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 773 | static char baud_cor3[] = { /* receive threshold */ |
| 774 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 775 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, |
| 776 | 0x07 |
| 777 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | |
| 779 | /* |
| 780 | * The Cyclades driver implements HW flow control as any serial driver. |
| 781 | * The cyclades_port structure member rflow and the vector rflow_thr |
| 782 | * allows us to take advantage of a special feature in the CD1400 to avoid |
| 783 | * data loss even when the system interrupt latency is too high. These flags |
| 784 | * are to be used only with very special applications. Setting these flags |
| 785 | * requires the use of a special cable (DTR and RTS reversed). In the new |
| 786 | * CD1400-based boards (rev. 6.00 or later), there is no need for special |
| 787 | * cables. |
| 788 | */ |
| 789 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 790 | static char rflow_thr[] = { /* rflow threshold */ |
| 791 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 792 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 793 | 0x0a |
| 794 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | |
| 796 | /* The Cyclom-Ye has placed the sequential chips in non-sequential |
| 797 | * address order. This look-up table overcomes that problem. |
| 798 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 799 | static int cy_chip_offset[] = { 0x0000, |
| 800 | 0x0400, |
| 801 | 0x0800, |
| 802 | 0x0C00, |
| 803 | 0x0200, |
| 804 | 0x0600, |
| 805 | 0x0A00, |
| 806 | 0x0E00 |
| 807 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | |
| 809 | /* PCI related definitions */ |
| 810 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | #ifdef CONFIG_PCI |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 812 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
| 813 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, /* PCI < 1Mb */ |
| 814 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, /* PCI > 1Mb */ |
| 815 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, /* 4Y PCI < 1Mb */ |
| 816 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, /* 4Y PCI > 1Mb */ |
| 817 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, /* 8Y PCI < 1Mb */ |
| 818 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, /* 8Y PCI > 1Mb */ |
| 819 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, /* Z PCI < 1Mb */ |
| 820 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, /* Z PCI > 1Mb */ |
| 821 | { } /* end of table */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 822 | }; |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 823 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | #endif |
| 825 | |
| 826 | static void cy_start(struct tty_struct *); |
| 827 | static void set_line_char(struct cyclades_port *); |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 828 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | #ifdef CONFIG_ISA |
| 830 | static unsigned detect_isa_irq(void __iomem *); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 831 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 833 | 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] | 834 | |
| 835 | #ifndef CONFIG_CYZ_INTR |
| 836 | static void cyz_poll(unsigned long); |
| 837 | |
| 838 | /* The Cyclades-Z polling cycle is defined by this variable */ |
| 839 | static long cyz_polling_cycle = CZ_DEF_POLL; |
| 840 | |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 841 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 843 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | static void cyz_rx_restart(unsigned long); |
| 845 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 846 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 848 | static inline int serial_paranoia_check(struct cyclades_port *info, |
| 849 | char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | { |
| 851 | #ifdef SERIAL_PARANOIA_CHECK |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 852 | if (!info) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 853 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
| 854 | "in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 855 | return 1; |
| 856 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 858 | if ((long)info < (long)(&cy_port[0]) || |
| 859 | (long)(&cy_port[NR_PORTS]) < (long)info) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 860 | printk(KERN_WARNING "cyc Warning: cyclades_port out of range " |
| 861 | "for (%s) in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 862 | return 1; |
| 863 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 865 | if (info->magic != CYCLADES_MAGIC) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 866 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
| 867 | "struct (%s) in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 868 | return 1; |
| 869 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 871 | return 0; |
| 872 | } /* serial_paranoia_check */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
| 874 | /* |
| 875 | * This routine is used by the interrupt handler to schedule |
| 876 | * processing in the software interrupt portion of the driver |
| 877 | * (also known as the "bottom half"). This can be called any |
| 878 | * number of times for any channel without harm. |
| 879 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 880 | static inline void cy_sched_event(struct cyclades_port *info, int event) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 882 | info->event |= 1 << event; /* remember what kind of event and who */ |
| 883 | schedule_work(&info->tqueue); |
| 884 | } /* cy_sched_event */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | |
| 886 | /* |
| 887 | * This routine is used to handle the "bottom half" processing for the |
| 888 | * serial driver, known also the "software interrupt" processing. |
| 889 | * This processing is done at the kernel interrupt level, after the |
| 890 | * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This |
| 891 | * is where time-consuming activities which can not be done in the |
| 892 | * interrupt driver proper are done; the interrupt driver schedules |
| 893 | * them using cy_sched_event(), and they get done here. |
| 894 | * |
| 895 | * This is done through one level of indirection--the task queue. |
| 896 | * When a hardware interrupt service routine wants service by the |
| 897 | * driver's bottom half, it enqueues the appropriate tq_struct (one |
| 898 | * per port) to the keventd work queue and sets a request flag |
| 899 | * that the work queue be processed. |
| 900 | * |
| 901 | * Although this may seem unwieldy, it gives the system a way to |
| 902 | * pass an argument (in this case the pointer to the cyclades_port |
| 903 | * structure) to the bottom half of the driver. Previous kernels |
| 904 | * had to poll every port to see if that port needed servicing. |
| 905 | */ |
| 906 | static void |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 907 | do_softint(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 909 | struct cyclades_port *info = |
| 910 | container_of(work, struct cyclades_port, tqueue); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 911 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 912 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 913 | tty = info->tty; |
| 914 | if (!tty) |
| 915 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 917 | if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { |
| 918 | tty_hangup(info->tty); |
| 919 | wake_up_interruptible(&info->open_wait); |
| 920 | info->flags &= ~ASYNC_NORMAL_ACTIVE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 922 | if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) |
| 923 | wake_up_interruptible(&info->open_wait); |
| 924 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 3991428 | 2007-05-08 00:36:54 -0700 | [diff] [blame] | 925 | if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event) && |
| 926 | !timer_pending(&cyz_rx_full_timer[info->line])) |
| 927 | mod_timer(&cyz_rx_full_timer[info->line], jiffies + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 929 | if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) |
| 930 | wake_up_interruptible(&info->delta_msr_wait); |
| 931 | tty_wakeup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | #ifdef Z_WAKE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 933 | if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 934 | complete(&info->shutdown_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | #endif |
| 936 | } /* do_softint */ |
| 937 | |
| 938 | |
| 939 | /***********************************************************/ |
| 940 | /********* Start of block of Cyclom-Y specific code ********/ |
| 941 | |
| 942 | /* This routine waits up to 1000 micro-seconds for the previous |
| 943 | command to the Cirrus chip to complete and then issues the |
| 944 | new command. An error is returned if the previous command |
| 945 | didn't finish within the time limit. |
| 946 | |
| 947 | This function is only called from inside spinlock-protected code. |
| 948 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 949 | 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] | 950 | { |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 951 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 953 | /* Check to see that the previous command has completed */ |
| 954 | for (i = 0; i < 100; i++) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 955 | if (readb(base_addr + (CyCCR << index)) == 0) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 956 | break; |
| 957 | } |
| 958 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 960 | /* if the CCR never cleared, the previous command |
| 961 | didn't finish within the "reasonable time" */ |
| 962 | if (i == 100) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 963 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 965 | /* Issue the new command */ |
| 966 | cy_writeb(base_addr + (CyCCR << index), cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 968 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 969 | } /* cyy_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | |
| 971 | #ifdef CONFIG_ISA |
| 972 | /* ISA interrupt detection code */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 973 | static unsigned detect_isa_irq(void __iomem * address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 975 | int irq; |
| 976 | unsigned long irqs, flags; |
| 977 | int save_xir, save_car; |
| 978 | int index = 0; /* IRQ probing is only for ISA */ |
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 | /* forget possible initially masked and pending IRQ */ |
| 981 | irq = probe_irq_off(probe_irq_on()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 983 | /* Clear interrupts on the board first */ |
| 984 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 985 | /* Cy_ClrIntr is 0x1800 */ |
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 | irqs = probe_irq_on(); |
| 988 | /* Wait ... */ |
| 989 | udelay(5000L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 991 | /* Enable the Tx interrupts on the CD1400 */ |
| 992 | local_irq_save(flags); |
| 993 | cy_writeb(address + (CyCAR << index), 0); |
| 994 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 996 | cy_writeb(address + (CyCAR << index), 0); |
| 997 | cy_writeb(address + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 998 | readb(address + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 999 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1001 | /* Wait ... */ |
| 1002 | udelay(5000L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1004 | /* Check which interrupt is in use */ |
| 1005 | irq = probe_irq_off(irqs); |
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 | /* Clean up */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1008 | save_xir = (u_char) readb(address + (CyTIR << index)); |
| 1009 | save_car = readb(address + (CyCAR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1010 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
| 1011 | cy_writeb(address + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1012 | readb(address + (CySRER << index)) & ~CyTxRdy); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1013 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
| 1014 | cy_writeb(address + (CyCAR << index), (save_car)); |
| 1015 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 1016 | /* Cy_ClrIntr is 0x1800 */ |
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 | return (irq > 0) ? irq : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1020 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1022 | static void cyy_intr_chip(struct cyclades_card *cinfo, int chip, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1023 | void __iomem * base_addr, int status, int index) |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1024 | { |
| 1025 | struct cyclades_port *info; |
| 1026 | struct tty_struct *tty; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1027 | int char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1028 | int i, j, len, mdm_change, mdm_status, outch; |
| 1029 | int save_xir, channel, save_car; |
| 1030 | char data; |
| 1031 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1032 | if (status & CySRReceive) { /* reception interrupt */ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1033 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1034 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1035 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1036 | /* determine the channel & change to that context */ |
| 1037 | spin_lock(&cinfo->card_lock); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1038 | save_xir = (u_char) readb(base_addr + (CyRIR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1039 | channel = (u_short) (save_xir & CyIRChannel); |
| 1040 | i = channel + chip * 4 + cinfo->first_line; |
| 1041 | info = &cy_port[i]; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1042 | save_car = readb(base_addr + (CyCAR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1043 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1044 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1045 | /* if there is nowhere to put the data, discard it */ |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1046 | if (info->tty == NULL) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1047 | j = (readb(base_addr + (CyRIVR << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1048 | CyIVRMask); |
| 1049 | if (j == CyIVRRxEx) { /* exception */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1050 | data = readb(base_addr + (CyRDSR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1051 | } else { /* normal character reception */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1052 | char_count = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1053 | (CyRDCR << index)); |
| 1054 | while (char_count--) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1055 | data = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1056 | (CyRDSR << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1057 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1058 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1059 | } else { /* there is an open port for this data */ |
| 1060 | tty = info->tty; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1061 | j = (readb(base_addr + (CyRIVR << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1062 | CyIVRMask); |
| 1063 | if (j == CyIVRRxEx) { /* exception */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1064 | data = readb(base_addr + (CyRDSR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1065 | |
| 1066 | /* For statistics only */ |
| 1067 | if (data & CyBREAK) |
| 1068 | info->icount.brk++; |
| 1069 | else if (data & CyFRAME) |
| 1070 | info->icount.frame++; |
| 1071 | else if (data & CyPARITY) |
| 1072 | info->icount.parity++; |
| 1073 | else if (data & CyOVERRUN) |
| 1074 | info->icount.overrun++; |
| 1075 | |
| 1076 | if (data & info->ignore_status_mask) { |
| 1077 | info->icount.rx++; |
| 1078 | return; |
| 1079 | } |
| 1080 | if (tty_buffer_request_room(tty, 1)) { |
| 1081 | if (data & info->read_status_mask) { |
| 1082 | if (data & CyBREAK) { |
| 1083 | tty_insert_flip_char( |
| 1084 | tty, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1085 | readb( |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1086 | base_addr + |
| 1087 | (CyRDSR << |
| 1088 | index)), |
| 1089 | TTY_BREAK); |
| 1090 | info->icount.rx++; |
| 1091 | if (info->flags & |
| 1092 | ASYNC_SAK) { |
| 1093 | do_SAK(tty); |
| 1094 | } |
| 1095 | } else if (data & CyFRAME) { |
| 1096 | tty_insert_flip_char( |
| 1097 | tty, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1098 | readb( |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1099 | base_addr + |
| 1100 | (CyRDSR << |
| 1101 | index)), |
| 1102 | TTY_FRAME); |
| 1103 | info->icount.rx++; |
| 1104 | info->idle_stats. |
| 1105 | frame_errs++; |
| 1106 | } else if (data & CyPARITY) { |
| 1107 | /* Pieces of seven... */ |
| 1108 | tty_insert_flip_char( |
| 1109 | tty, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1110 | readb( |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1111 | base_addr + |
| 1112 | (CyRDSR << |
| 1113 | index)), |
| 1114 | TTY_PARITY); |
| 1115 | info->icount.rx++; |
| 1116 | info->idle_stats. |
| 1117 | parity_errs++; |
| 1118 | } else if (data & CyOVERRUN) { |
| 1119 | tty_insert_flip_char( |
| 1120 | tty, 0, |
| 1121 | TTY_OVERRUN); |
| 1122 | info->icount.rx++; |
| 1123 | /* If the flip buffer itself is |
| 1124 | overflowing, we still lose |
| 1125 | the next incoming character. |
| 1126 | */ |
| 1127 | tty_insert_flip_char( |
| 1128 | tty, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1129 | readb( |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1130 | base_addr + |
| 1131 | (CyRDSR << |
| 1132 | index)), |
| 1133 | TTY_FRAME); |
| 1134 | info->icount.rx++; |
| 1135 | info->idle_stats. |
| 1136 | overruns++; |
| 1137 | /* These two conditions may imply */ |
| 1138 | /* a normal read should be done. */ |
| 1139 | /* }else if(data & CyTIMEOUT){ */ |
| 1140 | /* }else if(data & CySPECHAR){ */ |
| 1141 | } else { |
| 1142 | tty_insert_flip_char( |
| 1143 | tty, 0, |
| 1144 | TTY_NORMAL); |
| 1145 | info->icount.rx++; |
| 1146 | } |
| 1147 | } else { |
| 1148 | tty_insert_flip_char(tty, 0, |
| 1149 | TTY_NORMAL); |
| 1150 | info->icount.rx++; |
| 1151 | } |
| 1152 | } else { |
| 1153 | /* there was a software buffer |
| 1154 | overrun and nothing could be |
| 1155 | done about it!!! */ |
| 1156 | info->icount.buf_overrun++; |
| 1157 | info->idle_stats.overruns++; |
| 1158 | } |
| 1159 | } else { /* normal character reception */ |
| 1160 | /* load # chars available from the chip */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1161 | char_count = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1162 | (CyRDCR << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1163 | |
| 1164 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1165 | ++info->mon.int_count; |
| 1166 | info->mon.char_count += char_count; |
| 1167 | if (char_count > info->mon.char_max) |
| 1168 | info->mon.char_max = char_count; |
| 1169 | info->mon.char_last = char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1170 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1171 | len = tty_buffer_request_room(tty, char_count); |
| 1172 | while (len--) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1173 | data = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1174 | (CyRDSR << index)); |
| 1175 | tty_insert_flip_char(tty, data, |
| 1176 | TTY_NORMAL); |
| 1177 | info->idle_stats.recv_bytes++; |
| 1178 | info->icount.rx++; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1179 | #ifdef CY_16Y_HACK |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1180 | udelay(10L); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1181 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1182 | } |
| 1183 | info->idle_stats.recv_idle = jiffies; |
| 1184 | } |
| 1185 | tty_schedule_flip(tty); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1186 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1187 | /* end of service */ |
| 1188 | cy_writeb(base_addr + (CyRIR << index), (save_xir & 0x3f)); |
| 1189 | cy_writeb(base_addr + (CyCAR << index), (save_car)); |
| 1190 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1191 | } |
| 1192 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1193 | if (status & CySRTransmit) { /* transmission interrupt */ |
| 1194 | /* Since we only get here when the transmit buffer |
| 1195 | is empty, we know we can always stuff a dozen |
| 1196 | characters. */ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1197 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1198 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1199 | #endif |
| 1200 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1201 | /* determine the channel & change to that context */ |
| 1202 | spin_lock(&cinfo->card_lock); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1203 | save_xir = (u_char) readb(base_addr + (CyTIR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1204 | channel = (u_short) (save_xir & CyIRChannel); |
| 1205 | i = channel + chip * 4 + cinfo->first_line; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1206 | save_car = readb(base_addr + (CyCAR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1207 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1208 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1209 | /* validate the port# (as configured and open) */ |
| 1210 | if ((i < 0) || (NR_PORTS <= i)) { |
| 1211 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1212 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1213 | ~CyTxRdy); |
| 1214 | goto txend; |
| 1215 | } |
| 1216 | info = &cy_port[i]; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1217 | if (info->tty == NULL) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1218 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1219 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1220 | ~CyTxRdy); |
| 1221 | goto txdone; |
| 1222 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1223 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1224 | /* load the on-chip space for outbound data */ |
| 1225 | char_count = info->xmit_fifo_size; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1226 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1227 | if (info->x_char) { /* send special char */ |
| 1228 | outch = info->x_char; |
| 1229 | cy_writeb(base_addr + (CyTDR << index), outch); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1230 | char_count--; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1231 | info->icount.tx++; |
| 1232 | info->x_char = 0; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1233 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1234 | |
| 1235 | if (info->breakon || info->breakoff) { |
| 1236 | if (info->breakon) { |
| 1237 | cy_writeb(base_addr + (CyTDR << index), 0); |
| 1238 | cy_writeb(base_addr + (CyTDR << index), 0x81); |
| 1239 | info->breakon = 0; |
| 1240 | char_count -= 2; |
| 1241 | } |
| 1242 | if (info->breakoff) { |
| 1243 | cy_writeb(base_addr + (CyTDR << index), 0); |
| 1244 | cy_writeb(base_addr + (CyTDR << index), 0x83); |
| 1245 | info->breakoff = 0; |
| 1246 | char_count -= 2; |
| 1247 | } |
| 1248 | } |
| 1249 | |
| 1250 | while (char_count-- > 0) { |
| 1251 | if (!info->xmit_cnt) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1252 | if (readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1253 | CyTxMpty) { |
| 1254 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1255 | readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1256 | (CySRER << index)) & |
| 1257 | ~CyTxMpty); |
| 1258 | } else { |
| 1259 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1260 | (readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1261 | (CySRER << index)) & |
| 1262 | ~CyTxRdy) | CyTxMpty); |
| 1263 | } |
| 1264 | goto txdone; |
| 1265 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1266 | if (info->xmit_buf == NULL) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1267 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1268 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1269 | ~CyTxRdy); |
| 1270 | goto txdone; |
| 1271 | } |
| 1272 | if (info->tty->stopped || info->tty->hw_stopped) { |
| 1273 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1274 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1275 | ~CyTxRdy); |
| 1276 | goto txdone; |
| 1277 | } |
| 1278 | /* Because the Embedded Transmit Commands have |
| 1279 | been enabled, we must check to see if the |
| 1280 | escape character, NULL, is being sent. If it |
| 1281 | is, we must ensure that there is room for it |
| 1282 | to be doubled in the output stream. Therefore |
| 1283 | we no longer advance the pointer when the |
| 1284 | character is fetched, but rather wait until |
| 1285 | after the check for a NULL output character. |
| 1286 | This is necessary because there may not be |
| 1287 | room for the two chars needed to send a NULL.) |
| 1288 | */ |
| 1289 | outch = info->xmit_buf[info->xmit_tail]; |
| 1290 | if (outch) { |
| 1291 | info->xmit_cnt--; |
| 1292 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1293 | (SERIAL_XMIT_SIZE - 1); |
| 1294 | cy_writeb(base_addr + (CyTDR << index), outch); |
| 1295 | info->icount.tx++; |
| 1296 | } else { |
| 1297 | if (char_count > 1) { |
| 1298 | info->xmit_cnt--; |
| 1299 | info->xmit_tail = (info->xmit_tail + 1)& |
| 1300 | (SERIAL_XMIT_SIZE - 1); |
| 1301 | cy_writeb(base_addr + (CyTDR << index), |
| 1302 | outch); |
| 1303 | cy_writeb(base_addr + (CyTDR << index), |
| 1304 | 0); |
| 1305 | info->icount.tx++; |
| 1306 | char_count--; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1307 | } |
| 1308 | } |
| 1309 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1310 | |
| 1311 | txdone: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1312 | if (info->xmit_cnt < WAKEUP_CHARS) { |
| 1313 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); |
| 1314 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1315 | txend: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1316 | /* end of service */ |
| 1317 | cy_writeb(base_addr + (CyTIR << index), (save_xir & 0x3f)); |
| 1318 | cy_writeb(base_addr + (CyCAR << index), (save_car)); |
| 1319 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1320 | } |
| 1321 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1322 | if (status & CySRModem) { /* modem interrupt */ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1323 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1324 | /* determine the channel & change to that context */ |
| 1325 | spin_lock(&cinfo->card_lock); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1326 | save_xir = (u_char) readb(base_addr + (CyMIR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1327 | channel = (u_short) (save_xir & CyIRChannel); |
| 1328 | info = &cy_port[channel + chip * 4 + cinfo->first_line]; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1329 | save_car = readb(base_addr + (CyCAR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1330 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1331 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1332 | mdm_change = readb(base_addr + (CyMISR << index)); |
| 1333 | mdm_status = readb(base_addr + (CyMSVR1 << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1334 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1335 | if (info->tty) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1336 | if (mdm_change & CyANY_DELTA) { |
| 1337 | /* For statistics only */ |
| 1338 | if (mdm_change & CyDCD) |
| 1339 | info->icount.dcd++; |
| 1340 | if (mdm_change & CyCTS) |
| 1341 | info->icount.cts++; |
| 1342 | if (mdm_change & CyDSR) |
| 1343 | info->icount.dsr++; |
| 1344 | if (mdm_change & CyRI) |
| 1345 | info->icount.rng++; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1346 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1347 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1348 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1349 | |
| 1350 | if ((mdm_change & CyDCD) && |
| 1351 | (info->flags & ASYNC_CHECK_CD)) { |
| 1352 | if (mdm_status & CyDCD) { |
| 1353 | cy_sched_event(info, |
| 1354 | Cy_EVENT_OPEN_WAKEUP); |
| 1355 | } else { |
| 1356 | cy_sched_event(info, Cy_EVENT_HANGUP); |
| 1357 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1358 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1359 | if ((mdm_change & CyCTS) && |
| 1360 | (info->flags & ASYNC_CTS_FLOW)) { |
| 1361 | if (info->tty->hw_stopped) { |
| 1362 | if (mdm_status & CyCTS) { |
| 1363 | /* cy_start isn't used |
| 1364 | because... !!! */ |
| 1365 | info->tty->hw_stopped = 0; |
| 1366 | cy_writeb(base_addr + |
| 1367 | (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1368 | readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1369 | (CySRER << |
| 1370 | index))| |
| 1371 | CyTxRdy); |
| 1372 | cy_sched_event(info, |
| 1373 | Cy_EVENT_WRITE_WAKEUP); |
| 1374 | } |
| 1375 | } else { |
| 1376 | if (!(mdm_status & CyCTS)) { |
| 1377 | /* cy_stop isn't used |
| 1378 | because ... !!! */ |
| 1379 | info->tty->hw_stopped = 1; |
| 1380 | cy_writeb(base_addr + |
| 1381 | (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1382 | readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1383 | (CySRER << |
| 1384 | index)) & |
| 1385 | ~CyTxRdy); |
| 1386 | } |
| 1387 | } |
| 1388 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1389 | /* if (mdm_change & CyDSR) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1390 | } |
| 1391 | if (mdm_change & CyRI) { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1392 | }*/ |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1393 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1394 | /* end of service */ |
| 1395 | cy_writeb(base_addr + (CyMIR << index), (save_xir & 0x3f)); |
| 1396 | cy_writeb(base_addr + (CyCAR << index), save_car); |
| 1397 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1398 | } |
| 1399 | } |
| 1400 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | /* The real interrupt service routine is called |
| 1402 | whenever the card wants its hand held--chars |
| 1403 | received, out buffer empty, modem change, etc. |
| 1404 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1405 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1407 | int status; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1408 | struct cyclades_card *cinfo = dev_id; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1409 | void __iomem *base_addr, *card_base_addr; |
| 1410 | int chip; |
| 1411 | int index; |
| 1412 | int too_many; |
| 1413 | int had_work; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1414 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1415 | if (unlikely(cinfo == NULL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1417 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1419 | return IRQ_NONE; /* spurious interrupt */ |
| 1420 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1422 | card_base_addr = cinfo->base_addr; |
| 1423 | index = cinfo->bus_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1424 | |
Jiri Slaby | f1e83c6 | 2007-05-08 00:36:24 -0700 | [diff] [blame] | 1425 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
| 1426 | if (unlikely(card_base_addr == NULL)) |
| 1427 | return IRQ_HANDLED; |
| 1428 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1429 | /* This loop checks all chips in the card. Make a note whenever |
| 1430 | _any_ chip had some work to do, as this is considered an |
| 1431 | indication that there will be more to do. Only when no chip |
| 1432 | has any work does this outermost loop exit. |
| 1433 | */ |
| 1434 | do { |
| 1435 | had_work = 0; |
| 1436 | for (chip = 0; chip < cinfo->num_chips; chip++) { |
| 1437 | base_addr = cinfo->base_addr + |
| 1438 | (cy_chip_offset[chip] << index); |
| 1439 | too_many = 0; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1440 | while ((status = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1441 | (CySVRR << index))) != 0x00) { |
| 1442 | had_work++; |
| 1443 | /* The purpose of the following test is to ensure that |
| 1444 | no chip can monopolize the driver. This forces the |
| 1445 | chips to be checked in a round-robin fashion (after |
| 1446 | draining each of a bunch (1000) of characters). |
| 1447 | */ |
| 1448 | if (1000 < too_many++) { |
| 1449 | break; |
| 1450 | } |
| 1451 | cyy_intr_chip(cinfo, chip, base_addr, status, |
| 1452 | index); |
| 1453 | } |
| 1454 | } |
| 1455 | } while (had_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1457 | /* clear interrupts */ |
| 1458 | spin_lock(&cinfo->card_lock); |
| 1459 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); |
| 1460 | /* Cy_ClrIntr is 0x1800 */ |
| 1461 | spin_unlock(&cinfo->card_lock); |
| 1462 | return IRQ_HANDLED; |
| 1463 | } /* cyy_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | |
| 1465 | /***********************************************************/ |
| 1466 | /********* End of block of Cyclom-Y specific code **********/ |
| 1467 | /******** Start of block of Cyclades-Z specific code *********/ |
| 1468 | /***********************************************************/ |
| 1469 | |
| 1470 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1471 | cyz_fetch_msg(struct cyclades_card *cinfo, |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1472 | __u32 * channel, __u8 * cmd, __u32 * param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1474 | struct FIRM_ID __iomem *firm_id; |
| 1475 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 1476 | struct BOARD_CTRL __iomem *board_ctrl; |
| 1477 | unsigned long loc_doorbell; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1479 | firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1480 | if (!ISZLOADED(*cinfo)) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1481 | return -1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1482 | } |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1483 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1484 | board_ctrl = &zfw_ctrl->board_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1486 | loc_doorbell = readl(&((struct RUNTIME_9060 __iomem *) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1487 | (cinfo->ctl_addr))->loc_doorbell); |
| 1488 | if (loc_doorbell) { |
| 1489 | *cmd = (char)(0xff & loc_doorbell); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1490 | *channel = readl(&board_ctrl->fwcmd_channel); |
| 1491 | *param = (__u32) readl(&board_ctrl->fwcmd_param); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1492 | cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
| 1493 | loc_doorbell, 0xffffffff); |
| 1494 | return 1; |
| 1495 | } |
| 1496 | return 0; |
| 1497 | } /* cyz_fetch_msg */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | |
| 1499 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1500 | cyz_issue_cmd(struct cyclades_card *cinfo, |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1501 | __u32 channel, __u8 cmd, __u32 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; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1506 | __u32 __iomem *pci_doorbell; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1507 | int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1509 | firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1510 | if (!ISZLOADED(*cinfo)) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1511 | return -1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1512 | } |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1513 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 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 | index = 0; |
| 1517 | pci_doorbell = |
| 1518 | &((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->pci_doorbell; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1519 | while ((readl(pci_doorbell) & 0xff) != 0) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1520 | if (index++ == 1000) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1521 | return (int)(readl(pci_doorbell) & 0xff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1522 | } |
| 1523 | udelay(50L); |
| 1524 | } |
| 1525 | cy_writel(&board_ctrl->hcmd_channel, channel); |
| 1526 | cy_writel(&board_ctrl->hcmd_param, param); |
| 1527 | cy_writel(pci_doorbell, (long)cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1528 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1529 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1530 | } /* cyz_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | |
| 1532 | static void |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1533 | cyz_handle_rx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
| 1534 | struct BUF_CTRL __iomem *buf_ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1535 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1536 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1537 | struct tty_struct *tty = info->tty; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1538 | int char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1539 | int len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1540 | #ifdef BLOCKMOVE |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1541 | unsigned char *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1542 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1543 | char data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1544 | #endif |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1545 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1547 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
| 1548 | rx_put = readl(&buf_ctrl->rx_put); |
| 1549 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); |
| 1550 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1551 | if (rx_put >= rx_get) |
| 1552 | char_count = rx_put - rx_get; |
| 1553 | else |
| 1554 | char_count = rx_put - rx_get + rx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1556 | if (char_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1558 | info->mon.int_count++; |
| 1559 | info->mon.char_count += char_count; |
| 1560 | if (char_count > info->mon.char_max) |
| 1561 | info->mon.char_max = char_count; |
| 1562 | info->mon.char_last = char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1563 | #endif |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1564 | if (tty == NULL) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1565 | /* flush received characters */ |
| 1566 | new_rx_get = (new_rx_get + char_count) & |
| 1567 | (rx_bufsize - 1); |
| 1568 | info->rflush_count++; |
| 1569 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1571 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
| 1572 | for performance, but because of buffer boundaries, there |
| 1573 | may be several steps to the operation */ |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1574 | while (1) { |
| 1575 | len = tty_prepare_flip_string(tty, &buf, |
| 1576 | char_count); |
| 1577 | if (!len) |
| 1578 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1580 | len = min_t(unsigned int, min(len, char_count), |
| 1581 | rx_bufsize - new_rx_get); |
| 1582 | |
| 1583 | memcpy_fromio(buf, cinfo->base_addr + |
| 1584 | rx_bufaddr + new_rx_get, len); |
| 1585 | |
| 1586 | new_rx_get = (new_rx_get + len) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1587 | (rx_bufsize - 1); |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1588 | char_count -= len; |
| 1589 | info->icount.rx += len; |
| 1590 | info->idle_stats.recv_bytes += len; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1591 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1592 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1593 | len = tty_buffer_request_room(tty, char_count); |
| 1594 | while (len--) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1595 | data = readb(cinfo->base_addr + rx_bufaddr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1596 | new_rx_get); |
| 1597 | new_rx_get = (new_rx_get + 1)& (rx_bufsize - 1); |
| 1598 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
| 1599 | info->idle_stats.recv_bytes++; |
| 1600 | info->icount.rx++; |
| 1601 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | #endif |
| 1603 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1604 | /* Recalculate the number of chars in the RX buffer and issue |
| 1605 | a cmd in case it's higher than the RX high water mark */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1606 | rx_put = readl(&buf_ctrl->rx_put); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1607 | if (rx_put >= rx_get) |
| 1608 | char_count = rx_put - rx_get; |
| 1609 | else |
| 1610 | char_count = rx_put - rx_get + rx_bufsize; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1611 | if (char_count >= (int)readl(&buf_ctrl->rx_threshold)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1612 | cy_sched_event(info, Cy_EVENT_Z_RX_FULL); |
| 1613 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1615 | info->idle_stats.recv_idle = jiffies; |
| 1616 | tty_schedule_flip(tty); |
| 1617 | } |
| 1618 | /* Update rx_get */ |
| 1619 | cy_writel(&buf_ctrl->rx_get, new_rx_get); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | } |
| 1622 | |
| 1623 | static void |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1624 | cyz_handle_tx(struct cyclades_port *info, struct CH_CTRL __iomem *ch_ctrl, |
| 1625 | struct BUF_CTRL __iomem *buf_ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1627 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1628 | struct tty_struct *tty = info->tty; |
| 1629 | char data; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1630 | int char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1632 | int small_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | #endif |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1634 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1636 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
| 1637 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1638 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1639 | tx_get = readl(&buf_ctrl->tx_get); |
| 1640 | tx_put = readl(&buf_ctrl->tx_put); |
| 1641 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); |
| 1642 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1643 | if (tx_put >= tx_get) |
| 1644 | char_count = tx_get - tx_put - 1 + tx_bufsize; |
| 1645 | else |
| 1646 | char_count = tx_get - tx_put - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1648 | if (char_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1650 | if (tty == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1651 | goto ztxdone; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1652 | |
| 1653 | if (info->x_char) { /* send special char */ |
| 1654 | data = info->x_char; |
| 1655 | |
| 1656 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1657 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1658 | info->x_char = 0; |
| 1659 | char_count--; |
| 1660 | info->icount.tx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1661 | } |
| 1662 | #ifdef BLOCKMOVE |
| 1663 | while (0 < (small_count = min_t(unsigned int, |
| 1664 | tx_bufsize - tx_put, min_t(unsigned int, |
| 1665 | (SERIAL_XMIT_SIZE - info->xmit_tail), |
| 1666 | min_t(unsigned int, info->xmit_cnt, |
| 1667 | char_count))))) { |
| 1668 | |
| 1669 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + |
| 1670 | tx_put), |
| 1671 | &info->xmit_buf[info->xmit_tail], |
| 1672 | small_count); |
| 1673 | |
| 1674 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); |
| 1675 | char_count -= small_count; |
| 1676 | info->icount.tx += small_count; |
| 1677 | info->xmit_cnt -= small_count; |
| 1678 | info->xmit_tail = (info->xmit_tail + small_count) & |
| 1679 | (SERIAL_XMIT_SIZE - 1); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1680 | } |
| 1681 | #else |
| 1682 | while (info->xmit_cnt && char_count) { |
| 1683 | data = info->xmit_buf[info->xmit_tail]; |
| 1684 | info->xmit_cnt--; |
| 1685 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1686 | (SERIAL_XMIT_SIZE - 1); |
| 1687 | |
| 1688 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1689 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1690 | char_count--; |
| 1691 | info->icount.tx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1692 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1693 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1694 | ztxdone: |
| 1695 | if (info->xmit_cnt < WAKEUP_CHARS) { |
| 1696 | cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); |
| 1697 | } |
| 1698 | /* Update tx_put */ |
| 1699 | cy_writel(&buf_ctrl->tx_put, tx_put); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | } |
| 1702 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1703 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1704 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1705 | struct tty_struct *tty; |
| 1706 | struct cyclades_port *info; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1707 | static struct FIRM_ID __iomem *firm_id; |
| 1708 | static struct ZFW_CTRL __iomem *zfw_ctrl; |
| 1709 | static struct BOARD_CTRL __iomem *board_ctrl; |
| 1710 | static struct CH_CTRL __iomem *ch_ctrl; |
| 1711 | static struct BUF_CTRL __iomem *buf_ctrl; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1712 | __u32 channel; |
| 1713 | __u8 cmd; |
| 1714 | __u32 param; |
| 1715 | __u32 hw_ver, fw_ver; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1716 | int special_count; |
| 1717 | int delta_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1718 | |
| 1719 | firm_id = cinfo->base_addr + ID_ADDRESS; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1720 | zfw_ctrl = cinfo->base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1721 | board_ctrl = &zfw_ctrl->board_ctrl; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1722 | fw_ver = readl(&board_ctrl->fw_version); |
| 1723 | hw_ver = readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))-> |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1724 | mail_box_0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1726 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { |
| 1727 | special_count = 0; |
| 1728 | delta_count = 0; |
| 1729 | info = &cy_port[channel + cinfo->first_line]; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1730 | if ((tty = info->tty) == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1731 | continue; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1732 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1733 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
| 1734 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); |
| 1735 | |
| 1736 | switch (cmd) { |
| 1737 | case C_CM_PR_ERROR: |
| 1738 | tty_insert_flip_char(tty, 0, TTY_PARITY); |
| 1739 | info->icount.rx++; |
| 1740 | special_count++; |
| 1741 | break; |
| 1742 | case C_CM_FR_ERROR: |
| 1743 | tty_insert_flip_char(tty, 0, TTY_FRAME); |
| 1744 | info->icount.rx++; |
| 1745 | special_count++; |
| 1746 | break; |
| 1747 | case C_CM_RXBRK: |
| 1748 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
| 1749 | info->icount.rx++; |
| 1750 | special_count++; |
| 1751 | break; |
| 1752 | case C_CM_MDCD: |
| 1753 | info->icount.dcd++; |
| 1754 | delta_count++; |
| 1755 | if (info->flags & ASYNC_CHECK_CD) { |
| 1756 | if ((fw_ver > 241 ? ((u_long) param) : |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1757 | readl(&ch_ctrl->rs_status)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1758 | C_RS_DCD) { |
| 1759 | cy_sched_event(info, |
| 1760 | Cy_EVENT_OPEN_WAKEUP); |
| 1761 | } else { |
| 1762 | cy_sched_event(info, Cy_EVENT_HANGUP); |
| 1763 | } |
| 1764 | } |
| 1765 | break; |
| 1766 | case C_CM_MCTS: |
| 1767 | info->icount.cts++; |
| 1768 | delta_count++; |
| 1769 | break; |
| 1770 | case C_CM_MRI: |
| 1771 | info->icount.rng++; |
| 1772 | delta_count++; |
| 1773 | break; |
| 1774 | case C_CM_MDSR: |
| 1775 | info->icount.dsr++; |
| 1776 | delta_count++; |
| 1777 | break; |
| 1778 | #ifdef Z_WAKE |
| 1779 | case C_CM_IOCTLW: |
| 1780 | cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); |
| 1781 | break; |
| 1782 | #endif |
| 1783 | #ifdef CONFIG_CYZ_INTR |
| 1784 | case C_CM_RXHIWM: |
| 1785 | case C_CM_RXNNDT: |
| 1786 | case C_CM_INTBACK2: |
| 1787 | /* Reception Interrupt */ |
| 1788 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1789 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
| 1790 | "port %ld\n", info->card, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1791 | #endif |
| 1792 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
| 1793 | break; |
| 1794 | case C_CM_TXBEMPTY: |
| 1795 | case C_CM_TXLOWWM: |
| 1796 | case C_CM_INTBACK: |
| 1797 | /* Transmission Interrupt */ |
| 1798 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1799 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
| 1800 | "port %ld\n", info->card, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1801 | #endif |
| 1802 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
| 1803 | break; |
| 1804 | #endif /* CONFIG_CYZ_INTR */ |
| 1805 | case C_CM_FATAL: |
| 1806 | /* should do something with this !!! */ |
| 1807 | break; |
| 1808 | default: |
| 1809 | break; |
| 1810 | } |
| 1811 | if (delta_count) |
| 1812 | cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); |
| 1813 | if (special_count) |
| 1814 | tty_schedule_flip(tty); |
| 1815 | } |
| 1816 | } |
| 1817 | |
| 1818 | #ifdef CONFIG_CYZ_INTR |
| 1819 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
| 1820 | { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1821 | struct cyclades_card *cinfo = dev_id; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1822 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1823 | if (unlikely(cinfo == NULL)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1824 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1825 | printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",irq); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1826 | #endif |
| 1827 | return IRQ_NONE; /* spurious interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1828 | } |
| 1829 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1830 | if (unlikely(!ISZLOADED(*cinfo))) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1831 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1832 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
| 1833 | "(IRQ%d).\n", irq); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1834 | #endif |
| 1835 | return IRQ_NONE; |
| 1836 | } |
| 1837 | |
| 1838 | /* Handle the interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1839 | cyz_handle_cmd(cinfo); |
| 1840 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1841 | return IRQ_HANDLED; |
| 1842 | } /* cyz_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1844 | static void cyz_rx_restart(unsigned long arg) |
| 1845 | { |
| 1846 | struct cyclades_port *info = (struct cyclades_port *)arg; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1847 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1848 | int retval; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1849 | __u32 channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1850 | unsigned long flags; |
| 1851 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1852 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1853 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1854 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1855 | printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1856 | info->line, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1858 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1859 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1861 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1863 | static void cyz_poll(unsigned long arg) |
| 1864 | { |
| 1865 | struct cyclades_card *cinfo; |
| 1866 | struct cyclades_port *info; |
| 1867 | struct tty_struct *tty; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1868 | static struct FIRM_ID *firm_id; |
| 1869 | static struct ZFW_CTRL *zfw_ctrl; |
| 1870 | static struct BOARD_CTRL *board_ctrl; |
| 1871 | static struct CH_CTRL *ch_ctrl; |
| 1872 | static struct BUF_CTRL *buf_ctrl; |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1873 | unsigned long expires = jiffies + HZ; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1874 | int card, port; |
| 1875 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1876 | for (card = 0; card < NR_CARDS; card++) { |
| 1877 | cinfo = &cy_card[card]; |
| 1878 | |
| 1879 | if (!IS_CYC_Z(*cinfo)) |
| 1880 | continue; |
| 1881 | if (!ISZLOADED(*cinfo)) |
| 1882 | continue; |
| 1883 | |
| 1884 | firm_id = cinfo->base_addr + ID_ADDRESS; |
| 1885 | zfw_ctrl = cinfo->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1886 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1887 | board_ctrl = &(zfw_ctrl->board_ctrl); |
| 1888 | |
| 1889 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
| 1890 | if (!cinfo->intr_enabled) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1891 | cinfo->nports = (int)readl(&board_ctrl->n_channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1892 | cinfo->intr_enabled = 1; |
| 1893 | continue; |
| 1894 | } |
| 1895 | |
| 1896 | cyz_handle_cmd(cinfo); |
| 1897 | |
| 1898 | for (port = 0; port < cinfo->nports; port++) { |
| 1899 | info = &cy_port[port + cinfo->first_line]; |
| 1900 | tty = info->tty; |
| 1901 | ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); |
| 1902 | buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); |
| 1903 | |
| 1904 | if (!info->throttle) |
| 1905 | cyz_handle_rx(info, ch_ctrl, buf_ctrl); |
| 1906 | cyz_handle_tx(info, ch_ctrl, buf_ctrl); |
| 1907 | } |
| 1908 | /* poll every 'cyz_polling_cycle' period */ |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1909 | expires = jiffies + cyz_polling_cycle; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1910 | } |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1911 | mod_timer(&cyz_timerlist, expires); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1912 | } /* cyz_poll */ |
| 1913 | |
| 1914 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | |
| 1916 | /********** End of block of Cyclades-Z specific code *********/ |
| 1917 | /***********************************************************/ |
| 1918 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | /* This is called whenever a port becomes active; |
| 1920 | interrupts are enabled and DTR & RTS are turned on. |
| 1921 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1922 | static int startup(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1924 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1925 | unsigned long flags; |
| 1926 | int retval = 0; |
| 1927 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1928 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1929 | unsigned long page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1931 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1932 | channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1934 | page = get_zeroed_page(GFP_KERNEL); |
| 1935 | if (!page) |
| 1936 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1938 | spin_lock_irqsave(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1939 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1940 | if (info->flags & ASYNC_INITIALIZED) { |
| 1941 | free_page(page); |
| 1942 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1943 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1944 | |
| 1945 | if (!info->type) { |
| 1946 | if (info->tty) { |
| 1947 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 1948 | } |
| 1949 | free_page(page); |
| 1950 | goto errout; |
| 1951 | } |
| 1952 | |
| 1953 | if (info->xmit_buf) |
| 1954 | free_page(page); |
| 1955 | else |
| 1956 | info->xmit_buf = (unsigned char *)page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1958 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1960 | set_line_char(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1962 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1963 | chip = channel >> 2; |
| 1964 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1965 | index = card->bus_index; |
| 1966 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | |
| 1968 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1969 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
| 1970 | "base_addr %p\n", |
| 1971 | card, chip, channel, base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1972 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1973 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1974 | |
| 1975 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 1976 | |
| 1977 | cy_writeb(base_addr + (CyRTPR << index), |
| 1978 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 1979 | /* 10ms rx timeout */ |
| 1980 | |
| 1981 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
| 1982 | index); |
| 1983 | |
| 1984 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 1985 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); |
| 1986 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); |
| 1987 | |
| 1988 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1989 | printk(KERN_DEBUG "cyc:startup raising DTR\n"); |
| 1990 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1991 | readb(base_addr + (CyMSVR1 << index)), |
| 1992 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | #endif |
| 1994 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1995 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1996 | readb(base_addr + (CySRER << index)) | CyRxData); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1997 | info->flags |= ASYNC_INITIALIZED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1999 | if (info->tty) { |
| 2000 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2001 | } |
| 2002 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 2003 | info->breakon = info->breakoff = 0; |
| 2004 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 2005 | info->idle_stats.in_use = |
| 2006 | info->idle_stats.recv_idle = |
| 2007 | info->idle_stats.xmit_idle = jiffies; |
| 2008 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2009 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2010 | |
| 2011 | } else { |
| 2012 | struct FIRM_ID __iomem *firm_id; |
| 2013 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2014 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2015 | struct CH_CTRL __iomem *ch_ctrl; |
| 2016 | int retval; |
| 2017 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2018 | base_addr = card->base_addr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2019 | |
| 2020 | firm_id = base_addr + ID_ADDRESS; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2021 | if (!ISZLOADED(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2022 | return -ENODEV; |
| 2023 | } |
| 2024 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2025 | zfw_ctrl = card->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2026 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2027 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2028 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2029 | |
| 2030 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2031 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
| 2032 | "base_addr %p\n", card, channel, base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2033 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2034 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2035 | |
| 2036 | cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | #ifdef Z_WAKE |
| 2038 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2039 | cy_writel(&ch_ctrl[channel].intr_enable, |
| 2040 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 2041 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2043 | cy_writel(&ch_ctrl[channel].intr_enable, |
| 2044 | C_IN_IOCTLW | C_IN_MDCD); |
| 2045 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | #else |
| 2047 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2048 | cy_writel(&ch_ctrl[channel].intr_enable, |
| 2049 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 2050 | C_IN_RXNNDT | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2051 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2052 | cy_writel(&ch_ctrl[channel].intr_enable, C_IN_MDCD); |
| 2053 | #endif /* CONFIG_CYZ_INTR */ |
| 2054 | #endif /* Z_WAKE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2056 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2057 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2058 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
| 2059 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2060 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2062 | /* Flush RX buffers before raising DTR and RTS */ |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2063 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2064 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2065 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
| 2066 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2067 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2068 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2069 | /* set timeout !!! */ |
| 2070 | /* set RTS and DTR !!! */ |
| 2071 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2072 | readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2073 | C_RS_DTR); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2074 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2075 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2076 | printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " |
| 2077 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2078 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2080 | printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | #endif |
| 2082 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2083 | /* enable send, recv, modem !!! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2085 | info->flags |= ASYNC_INITIALIZED; |
| 2086 | if (info->tty) { |
| 2087 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2088 | } |
| 2089 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 2090 | info->breakon = info->breakoff = 0; |
| 2091 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 2092 | info->idle_stats.in_use = |
| 2093 | info->idle_stats.recv_idle = |
| 2094 | info->idle_stats.xmit_idle = jiffies; |
| 2095 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2096 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | |
| 2099 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2100 | printk(KERN_DEBUG "cyc startup done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | #endif |
| 2102 | return 0; |
| 2103 | |
| 2104 | errout: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2105 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2107 | } /* startup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2108 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2109 | static void start_xmit(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2110 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2111 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2112 | unsigned long flags; |
| 2113 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2114 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2116 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2117 | channel = info->line - card->first_line; |
| 2118 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2119 | chip = channel >> 2; |
| 2120 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2121 | index = card->bus_index; |
| 2122 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2123 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2124 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2125 | cy_writeb(base_addr + (CyCAR << index), channel); |
| 2126 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2127 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2128 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2129 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2131 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2133 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2134 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2135 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2136 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
| 2137 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2138 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2139 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2140 | #else /* CONFIG_CYZ_INTR */ |
| 2141 | /* Don't have to do anything at this time */ |
| 2142 | #endif /* CONFIG_CYZ_INTR */ |
| 2143 | } |
| 2144 | } /* start_xmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | |
| 2146 | /* |
| 2147 | * This routine shuts down a serial port; interrupts are disabled, |
| 2148 | * and DTR is dropped if the hangup on close termio flag is on. |
| 2149 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2150 | static void shutdown(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2151 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2152 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2153 | unsigned long flags; |
| 2154 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2155 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2157 | if (!(info->flags & ASYNC_INITIALIZED)) { |
| 2158 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | } |
| 2160 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2161 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2162 | channel = info->line - card->first_line; |
| 2163 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2164 | chip = channel >> 2; |
| 2165 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2166 | index = card->bus_index; |
| 2167 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | |
| 2169 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2170 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
| 2171 | "channel %d, base_addr %p\n", |
| 2172 | card, chip, channel, base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2173 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2174 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2175 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2176 | |
| 2177 | /* Clear delta_msr_wait queue to avoid mem leaks. */ |
| 2178 | wake_up_interruptible(&info->delta_msr_wait); |
| 2179 | |
| 2180 | if (info->xmit_buf) { |
| 2181 | unsigned char *temp; |
| 2182 | temp = info->xmit_buf; |
| 2183 | info->xmit_buf = NULL; |
| 2184 | free_page((unsigned long)temp); |
| 2185 | } |
| 2186 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2187 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { |
| 2188 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); |
| 2189 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); |
| 2190 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2191 | printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); |
| 2192 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2193 | readb(base_addr + (CyMSVR1 << index)), |
| 2194 | readb(base_addr + (CyMSVR2 << index))); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2195 | #endif |
| 2196 | } |
| 2197 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); |
| 2198 | /* it may be appropriate to clear _XMIT at |
| 2199 | some later date (after testing)!!! */ |
| 2200 | |
| 2201 | if (info->tty) { |
| 2202 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2203 | } |
| 2204 | info->flags &= ~ASYNC_INITIALIZED; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2205 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2206 | } else { |
| 2207 | struct FIRM_ID __iomem *firm_id; |
| 2208 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2209 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2210 | struct CH_CTRL __iomem *ch_ctrl; |
| 2211 | int retval; |
| 2212 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2213 | base_addr = card->base_addr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2214 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2215 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
| 2216 | "base_addr %p\n", card, channel, base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2217 | #endif |
| 2218 | |
| 2219 | firm_id = base_addr + ID_ADDRESS; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2220 | if (!ISZLOADED(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2221 | return; |
| 2222 | } |
| 2223 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2224 | zfw_ctrl = card->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2225 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2226 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2227 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2228 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2229 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2230 | |
| 2231 | if (info->xmit_buf) { |
| 2232 | unsigned char *temp; |
| 2233 | temp = info->xmit_buf; |
| 2234 | info->xmit_buf = NULL; |
| 2235 | free_page((unsigned long)temp); |
| 2236 | } |
| 2237 | |
| 2238 | if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { |
| 2239 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2240 | (__u32)(readl(&ch_ctrl[channel].rs_control) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2241 | ~(C_RS_RTS | C_RS_DTR))); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2242 | retval = cyz_issue_cmd(info->card, channel, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2243 | C_CM_IOCTLM, 0L); |
| 2244 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2245 | printk(KERN_ERR"cyc:shutdown retval on ttyC%d " |
| 2246 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2247 | } |
| 2248 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2249 | printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2250 | #endif |
| 2251 | } |
| 2252 | |
| 2253 | if (info->tty) { |
| 2254 | set_bit(TTY_IO_ERROR, &info->tty->flags); |
| 2255 | } |
| 2256 | info->flags &= ~ASYNC_INITIALIZED; |
| 2257 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2258 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2259 | } |
| 2260 | |
| 2261 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2262 | printk(KERN_DEBUG "cyc shutdown done\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2263 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2264 | } /* shutdown */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2265 | |
| 2266 | /* |
| 2267 | * ------------------------------------------------------------ |
| 2268 | * cy_open() and friends |
| 2269 | * ------------------------------------------------------------ |
| 2270 | */ |
| 2271 | |
| 2272 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2273 | block_til_ready(struct tty_struct *tty, struct file *filp, |
| 2274 | struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2276 | DECLARE_WAITQUEUE(wait, current); |
| 2277 | struct cyclades_card *cinfo; |
| 2278 | unsigned long flags; |
| 2279 | int chip, channel, index; |
| 2280 | int retval; |
| 2281 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2283 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2284 | channel = info->line - cinfo->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2286 | /* |
| 2287 | * If the device is in the middle of being closed, then block |
| 2288 | * until it's done, and then try again. |
| 2289 | */ |
| 2290 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 2291 | wait_event_interruptible(info->close_wait, |
| 2292 | !(info->flags & ASYNC_CLOSING)); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2293 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2294 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2295 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2296 | /* |
| 2297 | * If non-blocking mode is set, then make the check up front |
| 2298 | * and then exit. |
| 2299 | */ |
| 2300 | if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { |
| 2301 | info->flags |= ASYNC_NORMAL_ACTIVE; |
| 2302 | return 0; |
| 2303 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2304 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2305 | /* |
| 2306 | * Block waiting for the carrier detect and the line to become |
| 2307 | * free (i.e., not in use by the callout). While we are in |
| 2308 | * this loop, info->count is dropped by one, so that |
| 2309 | * cy_close() knows when to free things. We restore it upon |
| 2310 | * exit, either normal or abnormal. |
| 2311 | */ |
| 2312 | retval = 0; |
| 2313 | add_wait_queue(&info->open_wait, &wait); |
| 2314 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2315 | printk(KERN_DEBUG "cyc block_til_ready before block: ttyC%d, " |
| 2316 | "count = %d\n", info->line, info->count); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2317 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2318 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2319 | if (!tty_hung_up_p(filp)) |
| 2320 | info->count--; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2321 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2322 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2323 | printk(KERN_DEBUG "cyc block_til_ready: (%d): decrementing count to " |
| 2324 | "%d\n", current->pid, info->count); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2325 | #endif |
| 2326 | info->blocked_open++; |
| 2327 | |
| 2328 | if (!IS_CYC_Z(*cinfo)) { |
| 2329 | chip = channel >> 2; |
| 2330 | channel &= 0x03; |
| 2331 | index = cinfo->bus_index; |
| 2332 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
| 2333 | |
| 2334 | while (1) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2335 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2336 | if ((tty->termios->c_cflag & CBAUD)) { |
| 2337 | cy_writeb(base_addr + (CyCAR << index), |
| 2338 | (u_char) channel); |
| 2339 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 2340 | CyRTS); |
| 2341 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 2342 | CyDTR); |
| 2343 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2344 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
| 2345 | "DTR\n"); |
| 2346 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2347 | readb(base_addr + (CyMSVR1 << index)), |
| 2348 | readb(base_addr + (CyMSVR2 << index))); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2349 | #endif |
| 2350 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2351 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2352 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2353 | set_current_state(TASK_INTERRUPTIBLE); |
| 2354 | if (tty_hung_up_p(filp) || |
| 2355 | !(info->flags & ASYNC_INITIALIZED)) { |
| 2356 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? |
| 2357 | -EAGAIN : -ERESTARTSYS); |
| 2358 | break; |
| 2359 | } |
| 2360 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2361 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2362 | cy_writeb(base_addr + (CyCAR << index), |
| 2363 | (u_char) channel); |
| 2364 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2365 | (readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2366 | (CyMSVR1 << index)) & CyDCD))) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2367 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2368 | break; |
| 2369 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2370 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2371 | |
| 2372 | if (signal_pending(current)) { |
| 2373 | retval = -ERESTARTSYS; |
| 2374 | break; |
| 2375 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2376 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2377 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
| 2378 | "ttyC%d, count = %d\n", |
| 2379 | info->line, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2380 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2381 | schedule(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2383 | } else { |
| 2384 | struct FIRM_ID __iomem *firm_id; |
| 2385 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2386 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2387 | struct CH_CTRL __iomem *ch_ctrl; |
| 2388 | int retval; |
| 2389 | |
| 2390 | base_addr = cinfo->base_addr; |
| 2391 | firm_id = base_addr + ID_ADDRESS; |
| 2392 | if (!ISZLOADED(*cinfo)) { |
Milind Arun Choudhary | cc0a8fb | 2007-05-08 00:30:52 -0700 | [diff] [blame] | 2393 | __set_current_state(TASK_RUNNING); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2394 | remove_wait_queue(&info->open_wait, &wait); |
| 2395 | return -EINVAL; |
| 2396 | } |
| 2397 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2398 | zfw_ctrl = base_addr + (readl(&firm_id->zfwctrl_addr)& 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2399 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2400 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 2401 | |
| 2402 | while (1) { |
| 2403 | if ((tty->termios->c_cflag & CBAUD)) { |
| 2404 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2405 | readl(&ch_ctrl[channel].rs_control) | |
| 2406 | C_RS_RTS | C_RS_DTR); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2407 | retval = cyz_issue_cmd(cinfo, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2408 | channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2409 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2410 | printk(KERN_ERR "cyc:block_til_ready " |
| 2411 | "retval on ttyC%d was %x\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2412 | info->line, retval); |
| 2413 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2414 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2415 | printk(KERN_DEBUG "cyc:block_til_ready raising " |
| 2416 | "Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2417 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2418 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2419 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2420 | set_current_state(TASK_INTERRUPTIBLE); |
| 2421 | if (tty_hung_up_p(filp) || |
| 2422 | !(info->flags & ASYNC_INITIALIZED)) { |
| 2423 | retval = ((info->flags & ASYNC_HUP_NOTIFY) ? |
| 2424 | -EAGAIN : -ERESTARTSYS); |
| 2425 | break; |
| 2426 | } |
| 2427 | if (!(info->flags & ASYNC_CLOSING) && (C_CLOCAL(tty) || |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2428 | (readl(&ch_ctrl[channel].rs_status) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2429 | C_RS_DCD))) { |
| 2430 | break; |
| 2431 | } |
| 2432 | if (signal_pending(current)) { |
| 2433 | retval = -ERESTARTSYS; |
| 2434 | break; |
| 2435 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2436 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2437 | printk(KERN_DEBUG "cyc block_til_ready blocking: " |
| 2438 | "ttyC%d, count = %d\n", |
| 2439 | info->line, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2440 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2441 | schedule(); |
| 2442 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | } |
Milind Arun Choudhary | cc0a8fb | 2007-05-08 00:30:52 -0700 | [diff] [blame] | 2444 | __set_current_state(TASK_RUNNING); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2445 | remove_wait_queue(&info->open_wait, &wait); |
| 2446 | if (!tty_hung_up_p(filp)) { |
| 2447 | info->count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2448 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2449 | printk(KERN_DEBUG "cyc:block_til_ready (%d): incrementing " |
| 2450 | "count to %d\n", current->pid, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2452 | } |
| 2453 | info->blocked_open--; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2455 | printk(KERN_DEBUG "cyc:block_til_ready after blocking: ttyC%d, " |
| 2456 | "count = %d\n", info->line, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2458 | if (retval) |
| 2459 | return retval; |
| 2460 | info->flags |= ASYNC_NORMAL_ACTIVE; |
| 2461 | return 0; |
| 2462 | } /* block_til_ready */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | |
| 2464 | /* |
| 2465 | * This routine is called whenever a serial port is opened. It |
| 2466 | * performs the serial-specific initialization for the tty structure. |
| 2467 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2468 | static int cy_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2470 | struct cyclades_port *info; |
| 2471 | int retval, line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2473 | line = tty->index; |
| 2474 | if ((line < 0) || (NR_PORTS <= line)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2476 | } |
| 2477 | info = &cy_port[line]; |
| 2478 | if (info->line < 0) { |
| 2479 | return -ENODEV; |
| 2480 | } |
| 2481 | |
| 2482 | /* If the card's firmware hasn't been loaded, |
| 2483 | treat it as absent from the system. This |
| 2484 | will make the user pay attention. |
| 2485 | */ |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2486 | if (IS_CYC_Z(*info->card)) { |
| 2487 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2488 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
| 2489 | |
| 2490 | if (!ISZLOADED(*cinfo)) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2491 | if (((ZE_V1 == readl(&((struct RUNTIME_9060 __iomem *) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2492 | (cinfo->ctl_addr))->mail_box_0)) && |
| 2493 | Z_FPGA_CHECK(*cinfo)) && |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2494 | (ZFIRM_HLT == readl( |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2495 | &firm_id->signature))) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2496 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
| 2497 | "need an external power supply for " |
| 2498 | "this number of ports.\nFirmware " |
| 2499 | "halted.\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2500 | } else { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2501 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
| 2502 | "yet loaded\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2503 | } |
| 2504 | return -ENODEV; |
| 2505 | } |
| 2506 | #ifdef CONFIG_CYZ_INTR |
| 2507 | else { |
| 2508 | /* In case this Z board is operating in interrupt mode, its |
| 2509 | interrupts should be enabled as soon as the first open |
| 2510 | happens to one of its ports. */ |
| 2511 | if (!cinfo->intr_enabled) { |
| 2512 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 2513 | struct BOARD_CTRL __iomem *board_ctrl; |
| 2514 | |
| 2515 | zfw_ctrl = cinfo->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2516 | (readl(&firm_id->zfwctrl_addr) & |
| 2517 | 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2518 | |
| 2519 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 2520 | |
| 2521 | /* Enable interrupts on the PLX chip */ |
| 2522 | cy_writew(cinfo->ctl_addr + 0x68, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2523 | readw(cinfo->ctl_addr + 0x68) | 0x0900); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2524 | /* Enable interrupts on the FW */ |
| 2525 | retval = cyz_issue_cmd(cinfo, 0, |
| 2526 | C_CM_IRQ_ENBL, 0L); |
| 2527 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2528 | printk(KERN_ERR "cyc:IRQ enable retval " |
| 2529 | "was %x\n", retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2530 | } |
| 2531 | cinfo->nports = |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2532 | (int)readl(&board_ctrl->n_channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2533 | cinfo->intr_enabled = 1; |
| 2534 | } |
| 2535 | } |
| 2536 | #endif /* CONFIG_CYZ_INTR */ |
| 2537 | /* Make sure this Z port really exists in hardware */ |
| 2538 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) |
| 2539 | return -ENODEV; |
| 2540 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2541 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2542 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2543 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2544 | tty->driver_data = info; |
| 2545 | info->tty = tty; |
| 2546 | if (serial_paranoia_check(info, tty->name, "cy_open")) { |
| 2547 | return -ENODEV; |
| 2548 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2549 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2550 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
| 2551 | info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2553 | info->count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2555 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2556 | current->pid, info->count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2557 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2559 | /* |
| 2560 | * If the port is the middle of closing, bail out now |
| 2561 | */ |
| 2562 | if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 2563 | wait_event_interruptible(info->close_wait, |
| 2564 | !(info->flags & ASYNC_CLOSING)); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2565 | return (info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2566 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2567 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2568 | /* |
| 2569 | * Start up serial port |
| 2570 | */ |
| 2571 | retval = startup(info); |
| 2572 | if (retval) { |
| 2573 | return retval; |
| 2574 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2575 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2576 | retval = block_til_ready(tty, filp, info); |
| 2577 | if (retval) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2578 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2579 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
| 2580 | "with %d\n", retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2581 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2582 | return retval; |
| 2583 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2585 | info->throttle = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2586 | |
| 2587 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2588 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2589 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2590 | return 0; |
| 2591 | } /* cy_open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2592 | |
| 2593 | /* |
| 2594 | * cy_wait_until_sent() --- wait until the transmitter is empty |
| 2595 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2596 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2597 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2598 | struct cyclades_card *card; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2599 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2600 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2601 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2602 | unsigned long orig_jiffies; |
| 2603 | int char_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2604 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2605 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) |
| 2606 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2607 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2608 | if (info->xmit_fifo_size == 0) |
| 2609 | return; /* Just in case.... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2610 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2611 | orig_jiffies = jiffies; |
| 2612 | /* |
| 2613 | * Set the check interval to be 1/5 of the estimated time to |
| 2614 | * send a single character, and make it at least 1. The check |
| 2615 | * interval should also be less than the timeout. |
| 2616 | * |
| 2617 | * Note: we have to use pretty tight timings here to satisfy |
| 2618 | * the NIST-PCTS. |
| 2619 | */ |
| 2620 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; |
| 2621 | char_time = char_time / 5; |
| 2622 | if (char_time <= 0) |
| 2623 | char_time = 1; |
| 2624 | if (timeout < 0) |
| 2625 | timeout = 0; |
| 2626 | if (timeout) |
| 2627 | char_time = min(char_time, timeout); |
| 2628 | /* |
| 2629 | * If the transmitter hasn't cleared in twice the approximate |
| 2630 | * amount of time to send the entire FIFO, it probably won't |
| 2631 | * ever clear. This assumes the UART isn't doing flow |
| 2632 | * control, which is currently the case. Hence, if it ever |
| 2633 | * takes longer than info->timeout, this is probably due to a |
| 2634 | * UART bug of some kind. So, we clamp the timeout parameter at |
| 2635 | * 2*info->timeout. |
| 2636 | */ |
| 2637 | if (!timeout || timeout > 2 * info->timeout) |
| 2638 | timeout = 2 * info->timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2640 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
| 2641 | timeout, char_time, jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2642 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2643 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2644 | channel = (info->line) - (card->first_line); |
| 2645 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2646 | chip = channel >> 2; |
| 2647 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2648 | index = card->bus_index; |
| 2649 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2650 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2651 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2652 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2654 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
| 2655 | break; |
| 2656 | if (timeout && time_after(jiffies, orig_jiffies + |
| 2657 | timeout)) |
| 2658 | break; |
| 2659 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2660 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2661 | /* Run one more char cycle */ |
| 2662 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2664 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2665 | #endif |
| 2666 | } |
| 2667 | |
| 2668 | /* |
| 2669 | * This routine is called when a particular tty device is closed. |
| 2670 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2671 | static void cy_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2673 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2674 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2675 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2676 | |
| 2677 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2678 | printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | #endif |
| 2680 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2681 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) { |
| 2682 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2684 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2685 | card = info->card; |
| 2686 | |
| 2687 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2688 | /* If the TTY is being hung up, nothing to do */ |
| 2689 | if (tty_hung_up_p(filp)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2690 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2691 | return; |
| 2692 | } |
| 2693 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2694 | printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, |
| 2695 | info->count); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2696 | #endif |
| 2697 | if ((tty->count == 1) && (info->count != 1)) { |
| 2698 | /* |
| 2699 | * Uh, oh. tty->count is 1, which means that the tty |
| 2700 | * structure will be freed. Info->count should always |
| 2701 | * be one in these conditions. If it's greater than |
| 2702 | * one, we've got real problems, since it means the |
| 2703 | * serial port won't be shutdown. |
| 2704 | */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2705 | printk(KERN_ERR "cyc:cy_close: bad serial port count; " |
| 2706 | "tty->count is 1, info->count is %d\n", info->count); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2707 | info->count = 1; |
| 2708 | } |
| 2709 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2710 | printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2711 | current->pid, info->count - 1); |
| 2712 | #endif |
| 2713 | if (--info->count < 0) { |
| 2714 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2715 | printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2716 | #endif |
| 2717 | info->count = 0; |
| 2718 | } |
| 2719 | if (info->count) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2720 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2721 | return; |
| 2722 | } |
| 2723 | info->flags |= ASYNC_CLOSING; |
| 2724 | |
| 2725 | /* |
| 2726 | * Now we wait for the transmit buffer to clear; and we notify |
| 2727 | * the line discipline to only process XON/XOFF characters. |
| 2728 | */ |
| 2729 | tty->closing = 1; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2730 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2731 | if (info->closing_wait != CY_CLOSING_WAIT_NONE) { |
| 2732 | tty_wait_until_sent(tty, info->closing_wait); |
| 2733 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2734 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2735 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2736 | if (!IS_CYC_Z(*card)) { |
| 2737 | int channel = info->line - card->first_line; |
| 2738 | int index = card->bus_index; |
| 2739 | void __iomem *base_addr = card->base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2740 | (cy_chip_offset[channel >> 2] << index); |
| 2741 | /* Stop accepting input */ |
| 2742 | channel &= 0x03; |
| 2743 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2744 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2745 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2746 | if (info->flags & ASYNC_INITIALIZED) { |
| 2747 | /* Waiting for on-board buffers to be empty before closing |
| 2748 | the port */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2749 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2750 | cy_wait_until_sent(tty, info->timeout); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2751 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2752 | } |
| 2753 | } else { |
| 2754 | #ifdef Z_WAKE |
| 2755 | /* Waiting for on-board buffers to be empty before closing the port */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2756 | void __iomem *base_addr = card->base_addr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2757 | struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; |
| 2758 | struct ZFW_CTRL __iomem *zfw_ctrl = |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2759 | base_addr + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2760 | struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2761 | int channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2762 | int retval; |
| 2763 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2764 | if (readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2765 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2766 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2767 | printk(KERN_DEBUG "cyc:cy_close retval on " |
| 2768 | "ttyC%d was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2769 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2770 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 2771 | wait_for_completion_interruptible(&info->shutdown_wait); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2772 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2773 | } |
| 2774 | #endif |
| 2775 | } |
| 2776 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2777 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2778 | shutdown(info); |
| 2779 | if (tty->driver->flush_buffer) |
| 2780 | tty->driver->flush_buffer(tty); |
| 2781 | tty_ldisc_flush(tty); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2782 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2783 | |
| 2784 | tty->closing = 0; |
| 2785 | info->event = 0; |
| 2786 | info->tty = NULL; |
| 2787 | if (info->blocked_open) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2788 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2789 | if (info->close_delay) { |
| 2790 | msleep_interruptible(jiffies_to_msecs |
| 2791 | (info->close_delay)); |
| 2792 | } |
| 2793 | wake_up_interruptible(&info->open_wait); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2794 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2795 | } |
| 2796 | info->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
| 2797 | wake_up_interruptible(&info->close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2798 | |
| 2799 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2800 | printk(KERN_DEBUG "cyc:cy_close done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | #endif |
| 2802 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2803 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2804 | } /* cy_close */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2805 | |
| 2806 | /* This routine gets called when tty_write has put something into |
| 2807 | * the write_queue. The characters may come from user space or |
| 2808 | * kernel space. |
| 2809 | * |
| 2810 | * This routine will return the number of characters actually |
| 2811 | * accepted for writing. |
| 2812 | * |
| 2813 | * If the port is not already transmitting stuff, start it off by |
| 2814 | * enabling interrupts. The interrupt service routine will then |
| 2815 | * ensure that the characters are sent. |
| 2816 | * If the port is already active, there is no need to kick it. |
| 2817 | * |
| 2818 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2819 | 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] | 2820 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2821 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2822 | unsigned long flags; |
| 2823 | int c, ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | |
| 2825 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2826 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2827 | #endif |
| 2828 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2829 | if (serial_paranoia_check(info, tty->name, "cy_write")) { |
| 2830 | return 0; |
| 2831 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2833 | if (!info->xmit_buf) |
| 2834 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2836 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2837 | while (1) { |
| 2838 | c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), |
| 2839 | (int)(SERIAL_XMIT_SIZE - info->xmit_head))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2841 | if (c <= 0) |
| 2842 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2843 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2844 | memcpy(info->xmit_buf + info->xmit_head, buf, c); |
| 2845 | info->xmit_head = (info->xmit_head + c) & |
| 2846 | (SERIAL_XMIT_SIZE - 1); |
| 2847 | info->xmit_cnt += c; |
| 2848 | buf += c; |
| 2849 | count -= c; |
| 2850 | ret += c; |
| 2851 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2852 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2853 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2854 | info->idle_stats.xmit_bytes += ret; |
| 2855 | info->idle_stats.xmit_idle = jiffies; |
| 2856 | |
| 2857 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { |
| 2858 | start_xmit(info); |
| 2859 | } |
| 2860 | return ret; |
| 2861 | } /* cy_write */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2862 | |
| 2863 | /* |
| 2864 | * This routine is called by the kernel to write a single |
| 2865 | * character to the tty device. If the kernel uses this routine, |
| 2866 | * it must call the flush_chars() routine (if defined) when it is |
| 2867 | * done stuffing characters into the driver. If there is no room |
| 2868 | * in the queue, the character is ignored. |
| 2869 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2870 | static void cy_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2872 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2873 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | |
| 2875 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2876 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | #endif |
| 2878 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2879 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
| 2880 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2881 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2882 | if (!info->xmit_buf) |
| 2883 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2884 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2885 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 90cc301 | 2006-12-08 02:39:31 -0800 | [diff] [blame] | 2886 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2887 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2888 | return; |
| 2889 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2890 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2891 | info->xmit_buf[info->xmit_head++] = ch; |
| 2892 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
| 2893 | info->xmit_cnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2894 | info->idle_stats.xmit_bytes++; |
| 2895 | info->idle_stats.xmit_idle = jiffies; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2896 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2897 | } /* cy_put_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | |
| 2899 | /* |
| 2900 | * This routine is called by the kernel after it has written a |
| 2901 | * series of characters to the tty device using put_char(). |
| 2902 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2903 | static void cy_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2904 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2905 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2906 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2907 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2908 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2909 | #endif |
| 2910 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2911 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
| 2912 | return; |
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 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
| 2915 | !info->xmit_buf) |
| 2916 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2917 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2918 | start_xmit(info); |
| 2919 | } /* cy_flush_chars */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2920 | |
| 2921 | /* |
| 2922 | * This routine returns the numbers of characters the tty driver |
| 2923 | * will accept for queuing to be written. This number is subject |
| 2924 | * to change as output buffers get emptied, or if the output flow |
| 2925 | * control is activated. |
| 2926 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2927 | static int cy_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2928 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2929 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2930 | int ret; |
| 2931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2932 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2933 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2934 | #endif |
| 2935 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2936 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
| 2937 | return 0; |
| 2938 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; |
| 2939 | if (ret < 0) |
| 2940 | ret = 0; |
| 2941 | return ret; |
| 2942 | } /* cy_write_room */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2943 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2944 | static int cy_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2945 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2946 | struct cyclades_card *card; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2947 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2948 | int channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2949 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2950 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
| 2951 | return 0; |
| 2952 | |
| 2953 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2954 | channel = (info->line) - (card->first_line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2955 | |
| 2956 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2957 | if (!IS_CYC_Z(cy_card[card])) { |
| 2958 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2960 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
| 2961 | info->line, info->xmit_cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2962 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2963 | return info->xmit_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2965 | } else { |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 2966 | static struct FIRM_ID *firm_id; |
| 2967 | static struct ZFW_CTRL *zfw_ctrl; |
| 2968 | static struct CH_CTRL *ch_ctrl; |
| 2969 | static struct BUF_CTRL *buf_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2970 | int char_count; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 2971 | __u32 tx_put, tx_get, tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2972 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2973 | firm_id = card->base_addr + ID_ADDRESS; |
| 2974 | zfw_ctrl = card->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2975 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2976 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
| 2977 | buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2979 | tx_get = readl(&buf_ctrl->tx_get); |
| 2980 | tx_put = readl(&buf_ctrl->tx_put); |
| 2981 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2982 | if (tx_put >= tx_get) |
| 2983 | char_count = tx_put - tx_get; |
| 2984 | else |
| 2985 | char_count = tx_put - tx_get + tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2986 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2987 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
| 2988 | info->line, info->xmit_cnt + char_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2989 | #endif |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2990 | return info->xmit_cnt + char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2991 | } |
| 2992 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
| 2993 | } /* cy_chars_in_buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2994 | |
| 2995 | /* |
| 2996 | * ------------------------------------------------------------ |
| 2997 | * cy_ioctl() and friends |
| 2998 | * ------------------------------------------------------------ |
| 2999 | */ |
| 3000 | |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 3001 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3002 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3003 | int co, co_val, bpr; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 3004 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3005 | 25000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3006 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3007 | if (baud == 0) { |
| 3008 | info->tbpr = info->tco = info->rbpr = info->rco = 0; |
| 3009 | return; |
| 3010 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3011 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3012 | /* determine which prescaler to use */ |
| 3013 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { |
| 3014 | if (cy_clock / co_val / baud > 63) |
| 3015 | break; |
| 3016 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3017 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3018 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
| 3019 | if (bpr > 255) |
| 3020 | bpr = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3021 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3022 | info->tbpr = info->rbpr = bpr; |
| 3023 | info->tco = info->rco = co; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3024 | } |
| 3025 | |
| 3026 | /* |
| 3027 | * This routine finds or computes the various line characteristics. |
| 3028 | * It used to be called config_setup |
| 3029 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3030 | static void set_line_char(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3031 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3032 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3033 | unsigned long flags; |
| 3034 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3035 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3036 | unsigned cflag, iflag; |
| 3037 | unsigned short chip_number; |
| 3038 | int baud, baud_rate = 0; |
| 3039 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3041 | if (!info->tty || !info->tty->termios) { |
| 3042 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3043 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3044 | if (info->line == -1) { |
| 3045 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3046 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3047 | cflag = info->tty->termios->c_cflag; |
| 3048 | iflag = info->tty->termios->c_iflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3049 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3050 | /* |
| 3051 | * Set up the tty->alt_speed kludge |
| 3052 | */ |
| 3053 | if (info->tty) { |
| 3054 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
| 3055 | info->tty->alt_speed = 57600; |
| 3056 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
| 3057 | info->tty->alt_speed = 115200; |
| 3058 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| 3059 | info->tty->alt_speed = 230400; |
| 3060 | if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| 3061 | info->tty->alt_speed = 460800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3062 | } |
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 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3065 | channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3066 | chip_number = channel / 4; |
| 3067 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3068 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3069 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3070 | index = card->bus_index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3071 | |
| 3072 | /* baud rate */ |
| 3073 | baud = tty_get_baud_rate(info->tty); |
| 3074 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3075 | ASYNC_SPD_CUST) { |
| 3076 | if (info->custom_divisor) |
| 3077 | baud_rate = info->baud / info->custom_divisor; |
| 3078 | else |
| 3079 | baud_rate = info->baud; |
| 3080 | } else if (baud > CD1400_MAX_SPEED) { |
| 3081 | baud = CD1400_MAX_SPEED; |
| 3082 | } |
| 3083 | /* find the baud index */ |
| 3084 | for (i = 0; i < 20; i++) { |
| 3085 | if (baud == baud_table[i]) { |
| 3086 | break; |
| 3087 | } |
| 3088 | } |
| 3089 | if (i == 20) { |
| 3090 | i = 19; /* CD1400_MAX_SPEED */ |
| 3091 | } |
| 3092 | |
| 3093 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3094 | ASYNC_SPD_CUST) { |
| 3095 | cyy_baud_calc(info, baud_rate); |
| 3096 | } else { |
| 3097 | if (info->chip_rev >= CD1400_REV_J) { |
| 3098 | /* It is a CD1400 rev. J or later */ |
| 3099 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ |
| 3100 | info->tco = baud_co_60[i]; /* Tx CO */ |
| 3101 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ |
| 3102 | info->rco = baud_co_60[i]; /* Rx CO */ |
| 3103 | } else { |
| 3104 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ |
| 3105 | info->tco = baud_co_25[i]; /* Tx CO */ |
| 3106 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ |
| 3107 | info->rco = baud_co_25[i]; /* Rx CO */ |
| 3108 | } |
| 3109 | } |
| 3110 | if (baud_table[i] == 134) { |
| 3111 | /* get it right for 134.5 baud */ |
| 3112 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 3113 | 2; |
| 3114 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3115 | ASYNC_SPD_CUST) { |
| 3116 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3117 | baud_rate) + 2; |
| 3118 | } else if (baud_table[i]) { |
| 3119 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3120 | baud_table[i]) + 2; |
| 3121 | /* this needs to be propagated into the card info */ |
| 3122 | } else { |
| 3123 | info->timeout = 0; |
| 3124 | } |
| 3125 | /* By tradition (is it a standard?) a baud rate of zero |
| 3126 | implies the line should be/has been closed. A bit |
| 3127 | later in this routine such a test is performed. */ |
| 3128 | |
| 3129 | /* byte size and parity */ |
| 3130 | info->cor5 = 0; |
| 3131 | info->cor4 = 0; |
| 3132 | /* receive threshold */ |
| 3133 | info->cor3 = (info->default_threshold ? |
| 3134 | info->default_threshold : baud_cor3[i]); |
| 3135 | info->cor2 = CyETC; |
| 3136 | switch (cflag & CSIZE) { |
| 3137 | case CS5: |
| 3138 | info->cor1 = Cy_5_BITS; |
| 3139 | break; |
| 3140 | case CS6: |
| 3141 | info->cor1 = Cy_6_BITS; |
| 3142 | break; |
| 3143 | case CS7: |
| 3144 | info->cor1 = Cy_7_BITS; |
| 3145 | break; |
| 3146 | case CS8: |
| 3147 | info->cor1 = Cy_8_BITS; |
| 3148 | break; |
| 3149 | } |
| 3150 | if (cflag & CSTOPB) { |
| 3151 | info->cor1 |= Cy_2_STOP; |
| 3152 | } |
| 3153 | if (cflag & PARENB) { |
| 3154 | if (cflag & PARODD) { |
| 3155 | info->cor1 |= CyPARITY_O; |
| 3156 | } else { |
| 3157 | info->cor1 |= CyPARITY_E; |
| 3158 | } |
| 3159 | } else { |
| 3160 | info->cor1 |= CyPARITY_NONE; |
| 3161 | } |
| 3162 | |
| 3163 | /* CTS flow control flag */ |
| 3164 | if (cflag & CRTSCTS) { |
| 3165 | info->flags |= ASYNC_CTS_FLOW; |
| 3166 | info->cor2 |= CyCtsAE; |
| 3167 | } else { |
| 3168 | info->flags &= ~ASYNC_CTS_FLOW; |
| 3169 | info->cor2 &= ~CyCtsAE; |
| 3170 | } |
| 3171 | if (cflag & CLOCAL) |
| 3172 | info->flags &= ~ASYNC_CHECK_CD; |
| 3173 | else |
| 3174 | info->flags |= ASYNC_CHECK_CD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3175 | |
| 3176 | /*********************************************** |
| 3177 | The hardware option, CyRtsAO, presents RTS when |
| 3178 | the chip has characters to send. Since most modems |
| 3179 | use RTS as reverse (inbound) flow control, this |
| 3180 | option is not used. If inbound flow control is |
| 3181 | necessary, DTR can be programmed to provide the |
| 3182 | appropriate signals for use with a non-standard |
| 3183 | cable. Contact Marcio Saito for details. |
| 3184 | ***********************************************/ |
| 3185 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3186 | chip = channel >> 2; |
| 3187 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3188 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3189 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3190 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3191 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3192 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3193 | /* tx and rx baud rate */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3194 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3195 | cy_writeb(base_addr + (CyTCOR << index), info->tco); |
| 3196 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); |
| 3197 | cy_writeb(base_addr + (CyRCOR << index), info->rco); |
| 3198 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3199 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3200 | /* set line characteristics according configuration */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3201 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3202 | cy_writeb(base_addr + (CySCHR1 << index), |
| 3203 | START_CHAR(info->tty)); |
| 3204 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(info->tty)); |
| 3205 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); |
| 3206 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); |
| 3207 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
| 3208 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); |
| 3209 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3210 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3211 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
| 3212 | CyCOR3ch, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3213 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3214 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); /* !!! Is this needed? */ |
| 3215 | cy_writeb(base_addr + (CyRTPR << index), |
| 3216 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 3217 | /* 10ms rx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3218 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3219 | if (C_CLOCAL(info->tty)) { |
| 3220 | /* without modem intr */ |
| 3221 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3222 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3223 | /* act on 1->0 modem transitions */ |
| 3224 | if ((cflag & CRTSCTS) && info->rflow) { |
| 3225 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3226 | (CyCTS | rflow_thr[i])); |
| 3227 | } else { |
| 3228 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3229 | CyCTS); |
| 3230 | } |
| 3231 | /* act on 0->1 modem transitions */ |
| 3232 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3233 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3234 | /* without modem intr */ |
| 3235 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3236 | readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3237 | (CySRER << index)) | CyMdmCh); |
| 3238 | /* act on 1->0 modem transitions */ |
| 3239 | if ((cflag & CRTSCTS) && info->rflow) { |
| 3240 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3241 | (CyDSR | CyCTS | CyRI | CyDCD | |
| 3242 | rflow_thr[i])); |
| 3243 | } else { |
| 3244 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 3245 | CyDSR | CyCTS | CyRI | CyDCD); |
| 3246 | } |
| 3247 | /* act on 0->1 modem transitions */ |
| 3248 | cy_writeb(base_addr + (CyMCOR2 << index), |
| 3249 | CyDSR | CyCTS | CyRI | CyDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3250 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3251 | |
| 3252 | if (i == 0) { /* baud rate is zero, turn off line */ |
| 3253 | if (info->rtsdtr_inv) { |
| 3254 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3255 | ~CyRTS); |
| 3256 | } else { |
| 3257 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3258 | ~CyDTR); |
| 3259 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3260 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3261 | printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); |
| 3262 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3263 | readb(base_addr + (CyMSVR1 << index)), |
| 3264 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3265 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3266 | } else { |
| 3267 | if (info->rtsdtr_inv) { |
| 3268 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3269 | CyRTS); |
| 3270 | } else { |
| 3271 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3272 | CyDTR); |
| 3273 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3274 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3275 | printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); |
| 3276 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3277 | readb(base_addr + (CyMSVR1 << index)), |
| 3278 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3279 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3281 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3282 | if (info->tty) { |
| 3283 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 3284 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3285 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3287 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3288 | struct FIRM_ID __iomem *firm_id; |
| 3289 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3290 | struct BOARD_CTRL __iomem *board_ctrl; |
| 3291 | struct CH_CTRL __iomem *ch_ctrl; |
| 3292 | struct BUF_CTRL __iomem *buf_ctrl; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 3293 | __u32 sw_flow; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3294 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3295 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3296 | firm_id = card->base_addr + ID_ADDRESS; |
| 3297 | if (!ISZLOADED(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3298 | return; |
| 3299 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3300 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3301 | zfw_ctrl = card->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3302 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3303 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 3304 | ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); |
| 3305 | buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3306 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3307 | /* baud rate */ |
| 3308 | baud = tty_get_baud_rate(info->tty); |
| 3309 | if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3310 | ASYNC_SPD_CUST) { |
| 3311 | if (info->custom_divisor) |
| 3312 | baud_rate = info->baud / info->custom_divisor; |
| 3313 | else |
| 3314 | baud_rate = info->baud; |
| 3315 | } else if (baud > CYZ_MAX_SPEED) { |
| 3316 | baud = CYZ_MAX_SPEED; |
| 3317 | } |
| 3318 | cy_writel(&ch_ctrl->comm_baud, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3319 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3320 | if (baud == 134) { |
| 3321 | /* get it right for 134.5 baud */ |
| 3322 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 3323 | 2; |
| 3324 | } else if (baud == 38400 && (info->flags & ASYNC_SPD_MASK) == |
| 3325 | ASYNC_SPD_CUST) { |
| 3326 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3327 | baud_rate) + 2; |
| 3328 | } else if (baud) { |
| 3329 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 3330 | baud) + 2; |
| 3331 | /* this needs to be propagated into the card info */ |
| 3332 | } else { |
| 3333 | info->timeout = 0; |
| 3334 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3335 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3336 | /* byte size and parity */ |
| 3337 | switch (cflag & CSIZE) { |
| 3338 | case CS5: |
| 3339 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); |
| 3340 | break; |
| 3341 | case CS6: |
| 3342 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); |
| 3343 | break; |
| 3344 | case CS7: |
| 3345 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); |
| 3346 | break; |
| 3347 | case CS8: |
| 3348 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); |
| 3349 | break; |
| 3350 | } |
| 3351 | if (cflag & CSTOPB) { |
| 3352 | cy_writel(&ch_ctrl->comm_data_l, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3353 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3354 | } else { |
| 3355 | cy_writel(&ch_ctrl->comm_data_l, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3356 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3357 | } |
| 3358 | if (cflag & PARENB) { |
| 3359 | if (cflag & PARODD) { |
| 3360 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
| 3361 | } else { |
| 3362 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
| 3363 | } |
| 3364 | } else { |
| 3365 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
| 3366 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3367 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3368 | /* CTS flow control flag */ |
| 3369 | if (cflag & CRTSCTS) { |
| 3370 | cy_writel(&ch_ctrl->hw_flow, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3371 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3372 | } else { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3373 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
| 3374 | ~(C_RS_CTS | C_RS_RTS)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3375 | } |
| 3376 | /* As the HW flow control is done in firmware, the driver |
| 3377 | doesn't need to care about it */ |
| 3378 | info->flags &= ~ASYNC_CTS_FLOW; |
| 3379 | |
| 3380 | /* XON/XOFF/XANY flow control flags */ |
| 3381 | sw_flow = 0; |
| 3382 | if (iflag & IXON) { |
| 3383 | sw_flow |= C_FL_OXX; |
| 3384 | if (iflag & IXANY) |
| 3385 | sw_flow |= C_FL_OIXANY; |
| 3386 | } |
| 3387 | cy_writel(&ch_ctrl->sw_flow, sw_flow); |
| 3388 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3389 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3390 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3391 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
| 3392 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3393 | } |
| 3394 | |
| 3395 | /* CD sensitivity */ |
| 3396 | if (cflag & CLOCAL) { |
| 3397 | info->flags &= ~ASYNC_CHECK_CD; |
| 3398 | } else { |
| 3399 | info->flags |= ASYNC_CHECK_CD; |
| 3400 | } |
| 3401 | |
| 3402 | if (baud == 0) { /* baud rate is zero, turn off line */ |
| 3403 | cy_writel(&ch_ctrl->rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3404 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3405 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3406 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3407 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3408 | } else { |
| 3409 | cy_writel(&ch_ctrl->rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3410 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3411 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3412 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3413 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3414 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3415 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3416 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM,0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3417 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3418 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
| 3419 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3420 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3421 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3422 | if (info->tty) { |
| 3423 | clear_bit(TTY_IO_ERROR, &info->tty->flags); |
| 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 | } /* set_line_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3427 | |
| 3428 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3429 | get_serial_info(struct cyclades_port *info, |
| 3430 | struct serial_struct __user * retinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3431 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3432 | struct serial_struct tmp; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3433 | struct cyclades_card *cinfo = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3434 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3435 | if (!retinfo) |
| 3436 | return -EFAULT; |
| 3437 | memset(&tmp, 0, sizeof(tmp)); |
| 3438 | tmp.type = info->type; |
| 3439 | tmp.line = info->line; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3440 | tmp.port = (info->card - cy_card) * 0x100 + info->line - |
| 3441 | cinfo->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3442 | tmp.irq = cinfo->irq; |
| 3443 | tmp.flags = info->flags; |
| 3444 | tmp.close_delay = info->close_delay; |
Andrew Morton | d5dedf9 | 2007-03-05 00:30:04 -0800 | [diff] [blame] | 3445 | tmp.closing_wait = info->closing_wait; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3446 | tmp.baud_base = info->baud; |
| 3447 | tmp.custom_divisor = info->custom_divisor; |
| 3448 | tmp.hub6 = 0; /*!!! */ |
| 3449 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
| 3450 | } /* get_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3451 | |
| 3452 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3453 | set_serial_info(struct cyclades_port *info, |
| 3454 | struct serial_struct __user * new_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3455 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3456 | struct serial_struct new_serial; |
| 3457 | struct cyclades_port old_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3458 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3459 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
| 3460 | return -EFAULT; |
| 3461 | old_info = *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3462 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3463 | if (!capable(CAP_SYS_ADMIN)) { |
| 3464 | if (new_serial.close_delay != info->close_delay || |
| 3465 | new_serial.baud_base != info->baud || |
| 3466 | (new_serial.flags & ASYNC_FLAGS & |
| 3467 | ~ASYNC_USR_MASK) != |
| 3468 | (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
| 3469 | return -EPERM; |
| 3470 | info->flags = (info->flags & ~ASYNC_USR_MASK) | |
| 3471 | (new_serial.flags & ASYNC_USR_MASK); |
| 3472 | info->baud = new_serial.baud_base; |
| 3473 | info->custom_divisor = new_serial.custom_divisor; |
| 3474 | goto check_and_exit; |
| 3475 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3476 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3477 | /* |
| 3478 | * OK, past this point, all the error checking has been done. |
| 3479 | * At this point, we start making changes..... |
| 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 | info->baud = new_serial.baud_base; |
| 3483 | info->custom_divisor = new_serial.custom_divisor; |
| 3484 | info->flags = (info->flags & ~ASYNC_FLAGS) | |
| 3485 | (new_serial.flags & ASYNC_FLAGS); |
| 3486 | info->close_delay = new_serial.close_delay * HZ / 100; |
| 3487 | info->closing_wait = new_serial.closing_wait * HZ / 100; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3488 | |
| 3489 | check_and_exit: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3490 | if (info->flags & ASYNC_INITIALIZED) { |
| 3491 | set_line_char(info); |
| 3492 | return 0; |
| 3493 | } else { |
| 3494 | return startup(info); |
| 3495 | } |
| 3496 | } /* set_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3497 | |
| 3498 | /* |
| 3499 | * get_lsr_info - get line status register info |
| 3500 | * |
| 3501 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 3502 | * is emptied. On bus types like RS485, the transmitter must |
| 3503 | * release the bus after transmitting. This must be done when |
| 3504 | * the transmit shift register is empty, not be done when the |
| 3505 | * transmit holding register is empty. This functionality |
| 3506 | * allows an RS485 driver to be written in user space. |
| 3507 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3508 | 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] | 3509 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3510 | struct cyclades_card *card; |
| 3511 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3512 | unsigned char status; |
| 3513 | unsigned int result; |
| 3514 | unsigned long flags; |
| 3515 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3516 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3517 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3518 | channel = (info->line) - (card->first_line); |
| 3519 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3520 | chip = channel >> 2; |
| 3521 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3522 | index = card->bus_index; |
| 3523 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3524 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3525 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3526 | status = readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3527 | (CyTxRdy | CyTxMpty); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3528 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3529 | result = (status ? 0 : TIOCSER_TEMT); |
| 3530 | } else { |
| 3531 | /* Not supported yet */ |
| 3532 | return -EINVAL; |
| 3533 | } |
| 3534 | return put_user(result, (unsigned long __user *)value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3535 | } |
| 3536 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3537 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3538 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3539 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3540 | struct cyclades_card *card; |
| 3541 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3542 | void __iomem *base_addr; |
| 3543 | unsigned long flags; |
| 3544 | unsigned char status; |
| 3545 | unsigned long lstatus; |
| 3546 | unsigned int result; |
| 3547 | struct FIRM_ID __iomem *firm_id; |
| 3548 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3549 | struct BOARD_CTRL __iomem *board_ctrl; |
| 3550 | struct CH_CTRL __iomem *ch_ctrl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3551 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3552 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) |
| 3553 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3554 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3555 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3556 | channel = info->line - card->first_line; |
| 3557 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3558 | chip = channel >> 2; |
| 3559 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3560 | index = card->bus_index; |
| 3561 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3562 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3563 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3564 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3565 | status = readb(base_addr + (CyMSVR1 << index)); |
| 3566 | status |= readb(base_addr + (CyMSVR2 << index)); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3567 | spin_unlock_irqrestore(&card->card_lock, flags); |
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 | if (info->rtsdtr_inv) { |
| 3570 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | |
| 3571 | ((status & CyDTR) ? TIOCM_RTS : 0); |
| 3572 | } else { |
| 3573 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | |
| 3574 | ((status & CyDTR) ? TIOCM_DTR : 0); |
| 3575 | } |
| 3576 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | |
| 3577 | ((status & CyRI) ? TIOCM_RNG : 0) | |
| 3578 | ((status & CyDSR) ? TIOCM_DSR : 0) | |
| 3579 | ((status & CyCTS) ? TIOCM_CTS : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3580 | } else { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3581 | base_addr = card->base_addr; |
| 3582 | firm_id = card->base_addr + ID_ADDRESS; |
| 3583 | if (ISZLOADED(*card)) { |
| 3584 | zfw_ctrl = card->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3585 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3586 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 3587 | ch_ctrl = zfw_ctrl->ch_ctrl; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3588 | lstatus = readl(&ch_ctrl[channel].rs_status); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3589 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
| 3590 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | |
| 3591 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | |
| 3592 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | |
| 3593 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | |
| 3594 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); |
| 3595 | } else { |
| 3596 | result = 0; |
| 3597 | return -ENODEV; |
| 3598 | } |
| 3599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3600 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3601 | return result; |
| 3602 | } /* cy_tiomget */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3603 | |
| 3604 | static int |
| 3605 | cy_tiocmset(struct tty_struct *tty, struct file *file, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3606 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3607 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3608 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3609 | struct cyclades_card *card; |
| 3610 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3611 | void __iomem *base_addr; |
| 3612 | unsigned long flags; |
| 3613 | struct FIRM_ID __iomem *firm_id; |
| 3614 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 3615 | struct BOARD_CTRL __iomem *board_ctrl; |
| 3616 | struct CH_CTRL __iomem *ch_ctrl; |
| 3617 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3618 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3619 | if (serial_paranoia_check(info, tty->name, __FUNCTION__)) |
| 3620 | return -ENODEV; |
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 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3623 | channel = (info->line) - (card->first_line); |
| 3624 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3625 | chip = channel >> 2; |
| 3626 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3627 | index = card->bus_index; |
| 3628 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3629 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3630 | if (set & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3631 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3632 | cy_writeb(base_addr + (CyCAR << index), |
| 3633 | (u_char) channel); |
| 3634 | if (info->rtsdtr_inv) { |
| 3635 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3636 | CyDTR); |
| 3637 | } else { |
| 3638 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3639 | CyRTS); |
| 3640 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3641 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3642 | } |
| 3643 | if (clear & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3644 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3645 | cy_writeb(base_addr + (CyCAR << index), |
| 3646 | (u_char) channel); |
| 3647 | if (info->rtsdtr_inv) { |
| 3648 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3649 | ~CyDTR); |
| 3650 | } else { |
| 3651 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3652 | ~CyRTS); |
| 3653 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3654 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3655 | } |
| 3656 | if (set & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3657 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3658 | cy_writeb(base_addr + (CyCAR << index), |
| 3659 | (u_char) channel); |
| 3660 | if (info->rtsdtr_inv) { |
| 3661 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3662 | CyRTS); |
| 3663 | } else { |
| 3664 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3665 | CyDTR); |
| 3666 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3667 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3668 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
| 3669 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3670 | readb(base_addr + (CyMSVR1 << index)), |
| 3671 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3672 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3673 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3674 | } |
| 3675 | if (clear & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3676 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3677 | cy_writeb(base_addr + (CyCAR << index), |
| 3678 | (u_char) channel); |
| 3679 | if (info->rtsdtr_inv) { |
| 3680 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3681 | ~CyRTS); |
| 3682 | } else { |
| 3683 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3684 | ~CyDTR); |
| 3685 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3686 | |
| 3687 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3688 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
| 3689 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3690 | readb(base_addr + (CyMSVR1 << index)), |
| 3691 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3692 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3693 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3694 | } |
| 3695 | } else { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3696 | base_addr = card->base_addr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3697 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3698 | firm_id = card->base_addr + ID_ADDRESS; |
| 3699 | if (ISZLOADED(*card)) { |
| 3700 | zfw_ctrl = card->base_addr + |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3701 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3702 | board_ctrl = &zfw_ctrl->board_ctrl; |
| 3703 | ch_ctrl = zfw_ctrl->ch_ctrl; |
| 3704 | |
| 3705 | if (set & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3706 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3707 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3708 | readl(&ch_ctrl[channel].rs_control) | |
| 3709 | C_RS_RTS); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3710 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3711 | } |
| 3712 | if (clear & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3713 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3714 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3715 | readl(&ch_ctrl[channel].rs_control) & |
| 3716 | ~C_RS_RTS); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3717 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3718 | } |
| 3719 | if (set & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3720 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3721 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3722 | readl(&ch_ctrl[channel].rs_control) | |
| 3723 | C_RS_DTR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3724 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3725 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
| 3726 | "Z DTR\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3727 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3728 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3729 | } |
| 3730 | if (clear & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3731 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3732 | cy_writel(&ch_ctrl[channel].rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3733 | readl(&ch_ctrl[channel].rs_control) & |
| 3734 | ~C_RS_DTR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3735 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3736 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
| 3737 | "Z DTR\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3738 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3739 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3740 | } |
| 3741 | } else { |
| 3742 | return -ENODEV; |
| 3743 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3744 | spin_lock_irqsave(&card->card_lock, flags); |
| 3745 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3746 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3747 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
| 3748 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3749 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3750 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3751 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3752 | return 0; |
| 3753 | } /* cy_tiocmset */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3754 | |
| 3755 | /* |
| 3756 | * cy_break() --- routine which turns the break handling on or off |
| 3757 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3758 | static void cy_break(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3759 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3760 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3761 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3762 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3763 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3764 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
| 3765 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3766 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3767 | card = info->card; |
| 3768 | |
| 3769 | spin_lock_irqsave(&card->card_lock, flags); |
| 3770 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3771 | /* Let the transmit ISR take care of this (since it |
| 3772 | requires stuffing characters into the output stream). |
| 3773 | */ |
| 3774 | if (break_state == -1) { |
| 3775 | if (!info->breakon) { |
| 3776 | info->breakon = 1; |
| 3777 | if (!info->xmit_cnt) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3778 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3779 | start_xmit(info); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3780 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3781 | } |
| 3782 | } |
| 3783 | } else { |
| 3784 | if (!info->breakoff) { |
| 3785 | info->breakoff = 1; |
| 3786 | if (!info->xmit_cnt) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3787 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3788 | start_xmit(info); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3789 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3790 | } |
| 3791 | } |
| 3792 | } |
| 3793 | } else { |
| 3794 | int retval; |
| 3795 | |
| 3796 | if (break_state == -1) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3797 | retval = cyz_issue_cmd(card, |
| 3798 | info->line - card->first_line, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3799 | C_CM_SET_BREAK, 0L); |
| 3800 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3801 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
| 3802 | "ttyC%d was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3803 | } |
| 3804 | } else { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3805 | retval = cyz_issue_cmd(card, |
| 3806 | info->line - card->first_line, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3807 | C_CM_CLR_BREAK, 0L); |
| 3808 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3809 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
| 3810 | "on ttyC%d was %x\n", info->line, |
| 3811 | retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3812 | } |
| 3813 | } |
| 3814 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3815 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3816 | } /* cy_break */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3817 | |
| 3818 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3819 | get_mon_info(struct cyclades_port *info, struct cyclades_monitor __user * mon) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3820 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3821 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3822 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
| 3823 | return -EFAULT; |
| 3824 | info->mon.int_count = 0; |
| 3825 | info->mon.char_count = 0; |
| 3826 | info->mon.char_max = 0; |
| 3827 | info->mon.char_last = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3828 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3829 | } /* get_mon_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3830 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3831 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3832 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3833 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3834 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3835 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3836 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3837 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3838 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3839 | channel = info->line - card->first_line; |
| 3840 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3841 | chip = channel >> 2; |
| 3842 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3843 | index = card->bus_index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3844 | base_addr = |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3845 | card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3846 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3847 | info->cor3 &= ~CyREC_FIFO; |
| 3848 | info->cor3 |= value & CyREC_FIFO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3849 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3850 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3851 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
| 3852 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3853 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3854 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3855 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3856 | } /* set_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3857 | |
| 3858 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3859 | get_threshold(struct cyclades_port *info, unsigned long __user * value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3860 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3861 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3862 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3863 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3864 | unsigned long tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3865 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3866 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3867 | channel = info->line - card->first_line; |
| 3868 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3869 | chip = channel >> 2; |
| 3870 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3871 | index = card->bus_index; |
| 3872 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3873 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3874 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3875 | return put_user(tmp, value); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3876 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 3877 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3878 | } /* get_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3879 | |
| 3880 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3881 | set_default_threshold(struct cyclades_port *info, unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3882 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3883 | info->default_threshold = value & 0x0f; |
| 3884 | return 0; |
| 3885 | } /* set_default_threshold */ |
| 3886 | |
| 3887 | static int |
| 3888 | get_default_threshold(struct cyclades_port *info, unsigned long __user * value) |
| 3889 | { |
| 3890 | return put_user(info->default_threshold, value); |
| 3891 | } /* get_default_threshold */ |
| 3892 | |
| 3893 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
| 3894 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3895 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3896 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3897 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3898 | unsigned long flags; |
| 3899 | |
| 3900 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3901 | channel = info->line - card->first_line; |
| 3902 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3903 | chip = channel >> 2; |
| 3904 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3905 | index = card->bus_index; |
| 3906 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3907 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3908 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3909 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3910 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3911 | } |
| 3912 | return 0; |
| 3913 | } /* set_timeout */ |
| 3914 | |
| 3915 | static int get_timeout(struct cyclades_port *info, unsigned long __user * value) |
| 3916 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3917 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3918 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3919 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3920 | unsigned long tmp; |
| 3921 | |
| 3922 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3923 | channel = info->line - card->first_line; |
| 3924 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3925 | chip = channel >> 2; |
| 3926 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3927 | index = card->bus_index; |
| 3928 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3929 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3930 | tmp = readb(base_addr + (CyRTPR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3931 | return put_user(tmp, value); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3932 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 3933 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3934 | } /* get_timeout */ |
| 3935 | |
| 3936 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
| 3937 | { |
| 3938 | info->default_timeout = value & 0xff; |
| 3939 | return 0; |
| 3940 | } /* set_default_timeout */ |
| 3941 | |
| 3942 | static int |
| 3943 | get_default_timeout(struct cyclades_port *info, unsigned long __user * value) |
| 3944 | { |
| 3945 | return put_user(info->default_timeout, value); |
| 3946 | } /* get_default_timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3947 | |
| 3948 | /* |
| 3949 | * This routine allows the tty driver to implement device- |
| 3950 | * specific ioctl's. If the ioctl number passed in cmd is |
| 3951 | * not recognized by the driver, it should return ENOIOCTLCMD. |
| 3952 | */ |
| 3953 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3954 | cy_ioctl(struct tty_struct *tty, struct file *file, |
| 3955 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3956 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3957 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3958 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
| 3959 | struct serial_icounter_struct __user *p_cuser; /* user space */ |
| 3960 | int ret_val = 0; |
| 3961 | unsigned long flags; |
| 3962 | void __user *argp = (void __user *)arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3963 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3964 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) |
| 3965 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3966 | |
| 3967 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3968 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
| 3969 | info->line, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3970 | #endif |
| 3971 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3972 | switch (cmd) { |
| 3973 | case CYGETMON: |
| 3974 | ret_val = get_mon_info(info, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3975 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3976 | case CYGETTHRESH: |
| 3977 | ret_val = get_threshold(info, argp); |
| 3978 | break; |
| 3979 | case CYSETTHRESH: |
| 3980 | ret_val = set_threshold(info, arg); |
| 3981 | break; |
| 3982 | case CYGETDEFTHRESH: |
| 3983 | ret_val = get_default_threshold(info, argp); |
| 3984 | break; |
| 3985 | case CYSETDEFTHRESH: |
| 3986 | ret_val = set_default_threshold(info, arg); |
| 3987 | break; |
| 3988 | case CYGETTIMEOUT: |
| 3989 | ret_val = get_timeout(info, argp); |
| 3990 | break; |
| 3991 | case CYSETTIMEOUT: |
| 3992 | ret_val = set_timeout(info, arg); |
| 3993 | break; |
| 3994 | case CYGETDEFTIMEOUT: |
| 3995 | ret_val = get_default_timeout(info, argp); |
| 3996 | break; |
| 3997 | case CYSETDEFTIMEOUT: |
| 3998 | ret_val = set_default_timeout(info, arg); |
| 3999 | break; |
| 4000 | case CYSETRFLOW: |
| 4001 | info->rflow = (int)arg; |
| 4002 | ret_val = 0; |
| 4003 | break; |
| 4004 | case CYGETRFLOW: |
| 4005 | ret_val = info->rflow; |
| 4006 | break; |
| 4007 | case CYSETRTSDTR_INV: |
| 4008 | info->rtsdtr_inv = (int)arg; |
| 4009 | ret_val = 0; |
| 4010 | break; |
| 4011 | case CYGETRTSDTR_INV: |
| 4012 | ret_val = info->rtsdtr_inv; |
| 4013 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4014 | case CYGETCD1400VER: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4015 | ret_val = info->chip_rev; |
| 4016 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4017 | #ifndef CONFIG_CYZ_INTR |
| 4018 | case CYZSETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4019 | cyz_polling_cycle = (arg * HZ) / 1000; |
| 4020 | ret_val = 0; |
| 4021 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4022 | case CYZGETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4023 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
| 4024 | break; |
| 4025 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4026 | case CYSETWAIT: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4027 | info->closing_wait = (unsigned short)arg *HZ / 100; |
| 4028 | ret_val = 0; |
| 4029 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4030 | case CYGETWAIT: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4031 | ret_val = info->closing_wait / (HZ / 100); |
| 4032 | break; |
| 4033 | case TIOCGSERIAL: |
| 4034 | ret_val = get_serial_info(info, argp); |
| 4035 | break; |
| 4036 | case TIOCSSERIAL: |
| 4037 | ret_val = set_serial_info(info, argp); |
| 4038 | break; |
| 4039 | case TIOCSERGETLSR: /* Get line status register */ |
| 4040 | ret_val = get_lsr_info(info, argp); |
| 4041 | break; |
| 4042 | /* |
| 4043 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 4044 | * - mask passed in arg for lines of interest |
| 4045 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 4046 | * Caller should use TIOCGICOUNT to see which one it was |
| 4047 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4048 | case TIOCMIWAIT: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4049 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4050 | /* note the counters on entry */ |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 4051 | cnow = info->icount; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4052 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 4053 | ret_val = wait_event_interruptible(info->delta_msr_wait, ({ |
| 4054 | cprev = cnow; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4055 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4056 | cnow = info->icount; /* atomic copy */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4057 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4058 | |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 4059 | ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 4060 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 4061 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
| 4062 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); |
| 4063 | })); |
| 4064 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4065 | |
| 4066 | /* |
| 4067 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
| 4068 | * Return: write counters to the user passed counter struct |
| 4069 | * NB: both 1->0 and 0->1 transitions are counted except for |
| 4070 | * RI where only 0->1 is counted. |
| 4071 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4072 | case TIOCGICOUNT: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4073 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4074 | cnow = info->icount; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4075 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4076 | p_cuser = argp; |
| 4077 | ret_val = put_user(cnow.cts, &p_cuser->cts); |
| 4078 | if (ret_val) |
| 4079 | return ret_val; |
| 4080 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); |
| 4081 | if (ret_val) |
| 4082 | return ret_val; |
| 4083 | ret_val = put_user(cnow.rng, &p_cuser->rng); |
| 4084 | if (ret_val) |
| 4085 | return ret_val; |
| 4086 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); |
| 4087 | if (ret_val) |
| 4088 | return ret_val; |
| 4089 | ret_val = put_user(cnow.rx, &p_cuser->rx); |
| 4090 | if (ret_val) |
| 4091 | return ret_val; |
| 4092 | ret_val = put_user(cnow.tx, &p_cuser->tx); |
| 4093 | if (ret_val) |
| 4094 | return ret_val; |
| 4095 | ret_val = put_user(cnow.frame, &p_cuser->frame); |
| 4096 | if (ret_val) |
| 4097 | return ret_val; |
| 4098 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); |
| 4099 | if (ret_val) |
| 4100 | return ret_val; |
| 4101 | ret_val = put_user(cnow.parity, &p_cuser->parity); |
| 4102 | if (ret_val) |
| 4103 | return ret_val; |
| 4104 | ret_val = put_user(cnow.brk, &p_cuser->brk); |
| 4105 | if (ret_val) |
| 4106 | return ret_val; |
| 4107 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); |
| 4108 | if (ret_val) |
| 4109 | return ret_val; |
| 4110 | ret_val = 0; |
| 4111 | break; |
| 4112 | default: |
| 4113 | ret_val = -ENOIOCTLCMD; |
| 4114 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4115 | |
| 4116 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4117 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4118 | #endif |
| 4119 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4120 | return ret_val; |
| 4121 | } /* cy_ioctl */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4122 | |
| 4123 | /* |
| 4124 | * This routine allows the tty driver to be notified when |
| 4125 | * device's termios settings have changed. Note that a |
| 4126 | * well-designed tty driver should be prepared to accept the case |
| 4127 | * where old == NULL, and try to do something rational. |
| 4128 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4129 | 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] | 4130 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4131 | struct cyclades_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4132 | |
| 4133 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4134 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4135 | #endif |
| 4136 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4137 | if (tty->termios->c_cflag == old_termios->c_cflag && |
| 4138 | (tty->termios->c_iflag & (IXON | IXANY)) == |
| 4139 | (old_termios->c_iflag & (IXON | IXANY))) |
| 4140 | return; |
| 4141 | set_line_char(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4142 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4143 | if ((old_termios->c_cflag & CRTSCTS) && |
| 4144 | !(tty->termios->c_cflag & CRTSCTS)) { |
| 4145 | tty->hw_stopped = 0; |
| 4146 | cy_start(tty); |
| 4147 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4148 | #if 0 |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4149 | /* |
| 4150 | * No need to wake up processes in open wait, since they |
| 4151 | * sample the CLOCAL flag once, and don't recheck it. |
| 4152 | * XXX It's not clear whether the current behavior is correct |
| 4153 | * or not. Hence, this may change..... |
| 4154 | */ |
| 4155 | if (!(old_termios->c_cflag & CLOCAL) && |
| 4156 | (tty->termios->c_cflag & CLOCAL)) |
| 4157 | wake_up_interruptible(&info->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4158 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4159 | } /* cy_set_termios */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4160 | |
| 4161 | /* This function is used to send a high-priority XON/XOFF character to |
| 4162 | the device. |
| 4163 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4164 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4165 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4166 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4167 | struct cyclades_card *card; |
| 4168 | int channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4169 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4170 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4171 | return; |
| 4172 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4173 | info->x_char = ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4174 | |
| 4175 | if (ch) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4176 | cy_start(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4177 | |
| 4178 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4179 | channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4180 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4181 | if (IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4182 | if (ch == STOP_CHAR(tty)) |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4183 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4184 | else if (ch == START_CHAR(tty)) |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4185 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4186 | } |
| 4187 | } |
| 4188 | |
| 4189 | /* This routine is called by the upper-layer tty layer to signal |
| 4190 | that incoming characters should be throttled because the input |
| 4191 | buffers are close to full. |
| 4192 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4193 | static void cy_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4194 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4195 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4196 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4197 | unsigned long flags; |
| 4198 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4199 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4200 | |
| 4201 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4202 | char buf[64]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4203 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4204 | printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf), |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4205 | tty->ldisc.chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4206 | #endif |
| 4207 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4208 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) { |
| 4209 | return; |
| 4210 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4211 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4212 | card = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4213 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4214 | if (I_IXOFF(tty)) { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4215 | if (!IS_CYC_Z(*card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4216 | cy_send_xchar(tty, STOP_CHAR(tty)); |
| 4217 | else |
| 4218 | info->throttle = 1; |
| 4219 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4220 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4221 | if (tty->termios->c_cflag & CRTSCTS) { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4222 | channel = info->line - card->first_line; |
| 4223 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4224 | chip = channel >> 2; |
| 4225 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4226 | index = card->bus_index; |
| 4227 | base_addr = card->base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4228 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4229 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4230 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4231 | cy_writeb(base_addr + (CyCAR << index), |
| 4232 | (u_char) channel); |
| 4233 | if (info->rtsdtr_inv) { |
| 4234 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 4235 | ~CyDTR); |
| 4236 | } else { |
| 4237 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 4238 | ~CyRTS); |
| 4239 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4240 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4241 | } else { |
| 4242 | info->throttle = 1; |
| 4243 | } |
| 4244 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4245 | } /* cy_throttle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4246 | |
| 4247 | /* |
| 4248 | * This routine notifies the tty driver that it should signal |
| 4249 | * that characters can now be sent to the tty without fear of |
| 4250 | * overrunning the input buffers of the line disciplines. |
| 4251 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4252 | static void cy_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4253 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4254 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4255 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4256 | unsigned long flags; |
| 4257 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4258 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4259 | |
| 4260 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4261 | char buf[64]; |
| 4262 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4263 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
| 4264 | tty_name(tty, buf), tty->ldisc.chars_in_buffer(tty),info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4265 | #endif |
| 4266 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4267 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) { |
| 4268 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4269 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4270 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4271 | if (I_IXOFF(tty)) { |
| 4272 | if (info->x_char) |
| 4273 | info->x_char = 0; |
| 4274 | else |
| 4275 | cy_send_xchar(tty, START_CHAR(tty)); |
| 4276 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4277 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4278 | if (tty->termios->c_cflag & CRTSCTS) { |
| 4279 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4280 | channel = info->line - card->first_line; |
| 4281 | if (!IS_CYC_Z(*card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4282 | chip = channel >> 2; |
| 4283 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4284 | index = card->bus_index; |
| 4285 | base_addr = card->base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4286 | (cy_chip_offset[chip] << index); |
| 4287 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4288 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4289 | cy_writeb(base_addr + (CyCAR << index), |
| 4290 | (u_char) channel); |
| 4291 | if (info->rtsdtr_inv) { |
| 4292 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 4293 | CyDTR); |
| 4294 | } else { |
| 4295 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 4296 | CyRTS); |
| 4297 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4298 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4299 | } else { |
| 4300 | info->throttle = 0; |
| 4301 | } |
| 4302 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4303 | } /* cy_unthrottle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4304 | |
| 4305 | /* cy_start and cy_stop provide software output flow control as a |
| 4306 | function of XON/XOFF, software CTS, and other such stuff. |
| 4307 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4308 | static void cy_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4309 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4310 | struct cyclades_card *cinfo; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4311 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4312 | void __iomem *base_addr; |
| 4313 | int chip, channel, index; |
| 4314 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4315 | |
| 4316 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4317 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4318 | #endif |
| 4319 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4320 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
| 4321 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4322 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4323 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4324 | channel = info->line - cinfo->first_line; |
| 4325 | if (!IS_CYC_Z(*cinfo)) { |
| 4326 | index = cinfo->bus_index; |
| 4327 | chip = channel >> 2; |
| 4328 | channel &= 0x03; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4329 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4330 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4331 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4332 | cy_writeb(base_addr + (CyCAR << index), |
| 4333 | (u_char)(channel & 0x0003)); /* index channel */ |
| 4334 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4335 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4336 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4337 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4338 | } /* cy_stop */ |
| 4339 | |
| 4340 | static void cy_start(struct tty_struct *tty) |
| 4341 | { |
| 4342 | struct cyclades_card *cinfo; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4343 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4344 | void __iomem *base_addr; |
| 4345 | int chip, channel, index; |
| 4346 | unsigned long flags; |
| 4347 | |
| 4348 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4349 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4350 | #endif |
| 4351 | |
| 4352 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
| 4353 | return; |
| 4354 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4355 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4356 | channel = info->line - cinfo->first_line; |
| 4357 | index = cinfo->bus_index; |
| 4358 | if (!IS_CYC_Z(*cinfo)) { |
| 4359 | chip = channel >> 2; |
| 4360 | channel &= 0x03; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4361 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4362 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4363 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4364 | cy_writeb(base_addr + (CyCAR << index), (u_char) (channel & 0x0003)); /* index channel */ |
| 4365 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4366 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4367 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4368 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4369 | } /* cy_start */ |
| 4370 | |
| 4371 | static void cy_flush_buffer(struct tty_struct *tty) |
| 4372 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4373 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4374 | struct cyclades_card *card; |
| 4375 | int channel, retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4376 | unsigned long flags; |
| 4377 | |
| 4378 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4379 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4380 | #endif |
| 4381 | |
| 4382 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
| 4383 | return; |
| 4384 | |
| 4385 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4386 | channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4387 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4388 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4389 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4390 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4391 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4392 | if (IS_CYC_Z(*card)) { /* If it is a Z card, flush the on-board |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4393 | buffers as well */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4394 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4395 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4396 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4397 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " |
| 4398 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4399 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 4400 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4401 | } |
| 4402 | tty_wakeup(tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4403 | } /* cy_flush_buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4404 | |
| 4405 | /* |
| 4406 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. |
| 4407 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4408 | static void cy_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4409 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4410 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4412 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4413 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4414 | #endif |
| 4415 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4416 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
| 4417 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4418 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4419 | cy_flush_buffer(tty); |
| 4420 | shutdown(info); |
| 4421 | info->event = 0; |
| 4422 | info->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4423 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4424 | printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", |
| 4425 | current->pid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4426 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4427 | info->tty = NULL; |
| 4428 | info->flags &= ~ASYNC_NORMAL_ACTIVE; |
| 4429 | wake_up_interruptible(&info->open_wait); |
| 4430 | } /* cy_hangup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4431 | |
| 4432 | /* |
| 4433 | * --------------------------------------------------------------------- |
| 4434 | * cy_init() and friends |
| 4435 | * |
| 4436 | * cy_init() is called at boot-time to initialize the serial driver. |
| 4437 | * --------------------------------------------------------------------- |
| 4438 | */ |
| 4439 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4440 | static void __devinit cy_init_card(struct cyclades_card *cinfo) |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4441 | { |
| 4442 | struct cyclades_port *info; |
| 4443 | u32 mailbox; |
| 4444 | unsigned int nports; |
| 4445 | unsigned short chip_number; |
| 4446 | int index, port; |
| 4447 | |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4448 | spin_lock_init(&cinfo->card_lock); |
| 4449 | |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 4450 | if (IS_CYC_Z(*cinfo)) { /* Cyclades-Z */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4451 | mailbox = readl(&((struct RUNTIME_9060 __iomem *) |
| 4452 | cinfo->ctl_addr)->mail_box_0); |
| 4453 | nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; |
| 4454 | cinfo->intr_enabled = 0; |
| 4455 | cinfo->nports = 0; /* Will be correctly set later, after |
| 4456 | Z FW is loaded */ |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4457 | } else { |
| 4458 | index = cinfo->bus_index; |
| 4459 | nports = cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; |
| 4460 | } |
| 4461 | |
| 4462 | for (port = cinfo->first_line; port < cinfo->first_line + nports; |
| 4463 | port++) { |
| 4464 | info = &cy_port[port]; |
| 4465 | memset(info, 0, sizeof(*info)); |
| 4466 | info->magic = CYCLADES_MAGIC; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4467 | info->card = cinfo; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4468 | info->line = port; |
| 4469 | info->flags = STD_COM_FLAGS; |
| 4470 | info->closing_wait = CLOSING_WAIT_DELAY; |
| 4471 | info->close_delay = 5 * HZ / 10; |
| 4472 | |
| 4473 | INIT_WORK(&info->tqueue, do_softint); |
| 4474 | init_waitqueue_head(&info->open_wait); |
| 4475 | init_waitqueue_head(&info->close_wait); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 4476 | init_completion(&info->shutdown_wait); |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4477 | init_waitqueue_head(&info->delta_msr_wait); |
| 4478 | |
| 4479 | if (IS_CYC_Z(*cinfo)) { |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4480 | info->type = PORT_STARTECH; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4481 | if (mailbox == ZO_V1) |
| 4482 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
| 4483 | else |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4484 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4485 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 3991428 | 2007-05-08 00:36:54 -0700 | [diff] [blame] | 4486 | setup_timer(&cyz_rx_full_timer[port], |
| 4487 | cyz_rx_restart, (unsigned long)info); |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4488 | #endif |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4489 | } else { |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4490 | info->type = PORT_CIRRUS; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4491 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4492 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4493 | info->cor2 = CyETC; |
| 4494 | info->cor3 = 0x08; /* _very_ small rcv threshold */ |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4495 | |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4496 | chip_number = (port - cinfo->first_line) / 4; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4497 | if ((info->chip_rev = readb(cinfo->base_addr + |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4498 | (cy_chip_offset[chip_number] << |
| 4499 | index) + (CyGFRCR << index))) >= |
| 4500 | CD1400_REV_J) { |
| 4501 | /* It is a CD1400 rev. J or later */ |
| 4502 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ |
| 4503 | info->tco = baud_co_60[13]; /* Tx CO */ |
| 4504 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ |
| 4505 | info->rco = baud_co_60[13]; /* Rx CO */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4506 | info->rtsdtr_inv = 1; |
| 4507 | } else { |
| 4508 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ |
| 4509 | info->tco = baud_co_25[13]; /* Tx CO */ |
| 4510 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ |
| 4511 | info->rco = baud_co_25[13]; /* Rx CO */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4512 | info->rtsdtr_inv = 0; |
| 4513 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4514 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
| 4515 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4516 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4517 | |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4518 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4519 | |
| 4520 | #ifndef CONFIG_CYZ_INTR |
| 4521 | if (IS_CYC_Z(*cinfo) && !timer_pending(&cyz_timerlist)) { |
| 4522 | mod_timer(&cyz_timerlist, jiffies + 1); |
| 4523 | #ifdef CY_PCI_DEBUG |
| 4524 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); |
| 4525 | #endif |
| 4526 | } |
| 4527 | #endif |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4528 | } |
| 4529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4530 | /* initialize chips on Cyclom-Y card -- return number of valid |
| 4531 | chips (which is number of ports/4) */ |
Jiri Slaby | 31b4f0a | 2007-05-08 00:36:44 -0700 | [diff] [blame] | 4532 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
| 4533 | int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4534 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4535 | unsigned int chip_number; |
| 4536 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4537 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4538 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); |
| 4539 | /* Cy_HwReset is 0x1400 */ |
| 4540 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); |
| 4541 | /* Cy_ClrIntr is 0x1800 */ |
| 4542 | udelay(500L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4543 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4544 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; chip_number++) { |
| 4545 | base_addr = |
| 4546 | true_base_addr + (cy_chip_offset[chip_number] << index); |
| 4547 | mdelay(1); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4548 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4549 | /************* |
| 4550 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", |
| 4551 | chip_number, (unsigned long)base_addr); |
| 4552 | *************/ |
| 4553 | return chip_number; |
| 4554 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4555 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4556 | cy_writeb(base_addr + (CyGFRCR << index), 0); |
| 4557 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4558 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4559 | /* The Cyclom-16Y does not decode address bit 9 and therefore |
| 4560 | cannot distinguish between references to chip 0 and a non- |
| 4561 | existent chip 4. If the preceding clearing of the supposed |
| 4562 | chip 4 GFRCR register appears at chip 0, there is no chip 4 |
| 4563 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. |
| 4564 | */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4565 | if (chip_number == 4 && readb(true_base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4566 | (cy_chip_offset[0] << index) + |
| 4567 | (CyGFRCR << index)) == 0) { |
| 4568 | return chip_number; |
| 4569 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4570 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4571 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); |
| 4572 | mdelay(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4573 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4574 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4575 | /* |
| 4576 | printk(" chip #%d at %#6lx is not responding ", |
| 4577 | chip_number, (unsigned long)base_addr); |
| 4578 | printk("(GFRCR stayed 0)\n", |
| 4579 | */ |
| 4580 | return chip_number; |
| 4581 | } |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4582 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4583 | 0x40) { |
| 4584 | /* |
| 4585 | printk(" chip #%d at %#6lx is not valid (GFRCR == " |
| 4586 | "%#2x)\n", |
| 4587 | chip_number, (unsigned long)base_addr, |
| 4588 | base_addr[CyGFRCR<<index]); |
| 4589 | */ |
| 4590 | return chip_number; |
| 4591 | } |
| 4592 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4593 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4594 | /* It is a CD1400 rev. J or later */ |
| 4595 | /* Impossible to reach 5ms with this chip. |
| 4596 | Changed to 2ms instead (f = 500 Hz). */ |
| 4597 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); |
| 4598 | } else { |
| 4599 | /* f = 200 Hz */ |
| 4600 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); |
| 4601 | } |
| 4602 | |
| 4603 | /* |
| 4604 | printk(" chip #%d at %#6lx is rev 0x%2x\n", |
| 4605 | chip_number, (unsigned long)base_addr, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4606 | readb(base_addr+(CyGFRCR<<index))); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4607 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4608 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4609 | return chip_number; |
| 4610 | } /* cyy_init_card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4611 | |
| 4612 | /* |
| 4613 | * --------------------------------------------------------------------- |
| 4614 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. |
| 4615 | * sets global variables and return the number of ISA boards found. |
| 4616 | * --------------------------------------------------------------------- |
| 4617 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4618 | static int __init cy_detect_isa(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4619 | { |
| 4620 | #ifdef CONFIG_ISA |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4621 | unsigned short cy_isa_irq, nboard; |
| 4622 | void __iomem *cy_isa_address; |
| 4623 | unsigned short i, j, cy_isa_nchan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4624 | #ifdef MODULE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4625 | int isparam = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4626 | #endif |
| 4627 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4628 | nboard = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4629 | |
| 4630 | #ifdef MODULE |
| 4631 | /* Check for module parameters */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4632 | for (i = 0; i < NR_CARDS; i++) { |
| 4633 | if (maddr[i] || i) { |
| 4634 | isparam = 1; |
| 4635 | cy_isa_addresses[i] = maddr[i]; |
| 4636 | } |
| 4637 | if (!maddr[i]) |
| 4638 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4639 | } |
| 4640 | #endif |
| 4641 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4642 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
| 4643 | for (i = 0; i < NR_ISA_ADDRS; i++) { |
| 4644 | unsigned int isa_address = cy_isa_addresses[i]; |
| 4645 | if (isa_address == 0x0000) { |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4646 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4647 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4648 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4649 | /* probe for CD1400... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4650 | cy_isa_address = ioremap(isa_address, CyISA_Ywin); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4651 | cy_isa_nchan = CyPORTS_PER_CHIP * |
| 4652 | cyy_init_card(cy_isa_address, 0); |
| 4653 | if (cy_isa_nchan == 0) { |
| 4654 | continue; |
| 4655 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4656 | #ifdef MODULE |
| 4657 | if (isparam && irq[i]) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4658 | cy_isa_irq = irq[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4659 | else |
| 4660 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4661 | /* find out the board's irq by probing */ |
| 4662 | cy_isa_irq = detect_isa_irq(cy_isa_address); |
| 4663 | if (cy_isa_irq == 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4664 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
| 4665 | "IRQ could not be detected.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4666 | (unsigned long)cy_isa_address); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4667 | continue; |
| 4668 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4669 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4670 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4671 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
| 4672 | "more channels are available. Change NR_PORTS " |
| 4673 | "in cyclades.c and recompile kernel.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4674 | (unsigned long)cy_isa_address); |
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++) { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 4679 | if (cy_card[j].base_addr == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4680 | break; |
| 4681 | } |
| 4682 | if (j == NR_CARDS) { /* no more cy_cards available */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4683 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
| 4684 | "more cards can be used. Change NR_CARDS in " |
| 4685 | "cyclades.c and recompile kernel.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4686 | (unsigned long)cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4687 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4688 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4689 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4690 | /* allocate IRQ */ |
| 4691 | if (request_irq(cy_isa_irq, cyy_interrupt, |
| 4692 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4693 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
| 4694 | "could not allocate IRQ#%d.\n", |
| 4695 | (unsigned long)cy_isa_address, cy_isa_irq); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4696 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4697 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4698 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4699 | /* set cy_card */ |
| 4700 | cy_card[j].base_addr = cy_isa_address; |
| 4701 | cy_card[j].ctl_addr = NULL; |
| 4702 | cy_card[j].irq = (int)cy_isa_irq; |
| 4703 | cy_card[j].bus_index = 0; |
| 4704 | cy_card[j].first_line = cy_next_channel; |
| 4705 | cy_card[j].num_chips = cy_isa_nchan / 4; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4706 | cy_init_card(&cy_card[j]); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4707 | nboard++; |
| 4708 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4709 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
| 4710 | "%d channels starting from port %d\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4711 | j + 1, (unsigned long)cy_isa_address, |
| 4712 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4713 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
| 4714 | |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4715 | for (j = cy_next_channel; |
| 4716 | j < cy_next_channel + cy_isa_nchan; j++) |
| 4717 | tty_register_device(cy_serial_driver, j, NULL); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4718 | cy_next_channel += cy_isa_nchan; |
| 4719 | } |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4720 | return nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4721 | #else |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4722 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4723 | #endif /* CONFIG_ISA */ |
| 4724 | } /* cy_detect_isa */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4725 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4726 | #ifdef CONFIG_PCI |
| 4727 | static void __devinit plx_init(void __iomem * addr, __u32 initctl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4728 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4729 | /* Reset PLX */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4730 | cy_writel(addr + initctl, readl(addr + initctl) | 0x40000000); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4731 | udelay(100L); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4732 | cy_writel(addr + initctl, readl(addr + initctl) & ~0x40000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4733 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4734 | /* Reload Config. Registers from EEPROM */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4735 | cy_writel(addr + initctl, readl(addr + initctl) | 0x20000000); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4736 | udelay(100L); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4737 | cy_writel(addr + initctl, readl(addr + initctl) & ~0x20000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4738 | } |
| 4739 | |
Jiri Slaby | 6d8248e8 | 2007-05-08 00:36:47 -0700 | [diff] [blame] | 4740 | static int __devinit cy_init_Ze(struct RUNTIME_9060 __iomem *cy_pci_addr0, |
Jiri Slaby | 2b1da41f | 2007-05-08 00:36:12 -0700 | [diff] [blame] | 4741 | int cy_pci_irq, struct pci_dev *pdev) |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4742 | { |
Jiri Slaby | 2b1da41f | 2007-05-08 00:36:12 -0700 | [diff] [blame] | 4743 | void __iomem *cy_pci_addr2; |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4744 | unsigned int j; |
| 4745 | unsigned short cy_pci_nchan; |
| 4746 | |
Jiri Slaby | 2b1da41f | 2007-05-08 00:36:12 -0700 | [diff] [blame] | 4747 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ze_win); |
| 4748 | |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4749 | readl(&cy_pci_addr0->mail_box_0); |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4750 | dev_dbg(&pdev->dev, "new Cyclades-Z board. FPGA not loaded\n"); |
| 4751 | |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4752 | /* This must be the new Cyclades-Ze/PCI. */ |
| 4753 | cy_pci_nchan = ZE_V1_NPORTS; |
| 4754 | |
| 4755 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4756 | dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no channels " |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4757 | "are available.\nChange NR_PORTS in cyclades.c " |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4758 | "and recompile kernel.\n"); |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4759 | return -EIO; |
| 4760 | } |
| 4761 | |
| 4762 | /* fill the next cy_card structure available */ |
| 4763 | for (j = 0; j < NR_CARDS; j++) { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 4764 | if (cy_card[j].base_addr == NULL) |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4765 | break; |
| 4766 | } |
| 4767 | if (j == NR_CARDS) { /* no more cy_cards available */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4768 | dev_err(&pdev->dev, "Cyclades-Ze/PCI found, but no more " |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4769 | "cards can be used.\nChange NR_CARDS in " |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4770 | "cyclades.c and recompile kernel.\n"); |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4771 | return -EIO; |
| 4772 | } |
| 4773 | #ifdef CONFIG_CYZ_INTR |
| 4774 | /* allocate IRQ only if board has an IRQ */ |
| 4775 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { |
| 4776 | if (request_irq(cy_pci_irq, cyz_interrupt, |
| 4777 | IRQF_SHARED, "Cyclades-Z", |
| 4778 | &cy_card[j])) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4779 | dev_err(&pdev->dev, "could not allocate IRQ.\n"); |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4780 | return -EIO; |
| 4781 | } |
| 4782 | } |
| 4783 | #endif /* CONFIG_CYZ_INTR */ |
| 4784 | |
| 4785 | /* set cy_card */ |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4786 | cy_card[j].base_addr = cy_pci_addr2; |
| 4787 | cy_card[j].ctl_addr = cy_pci_addr0; |
Jiri Slaby | 80fada5 | 2007-05-08 00:36:41 -0700 | [diff] [blame] | 4788 | cy_card[j].irq = cy_pci_irq; |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4789 | cy_card[j].bus_index = 1; |
| 4790 | cy_card[j].first_line = cy_next_channel; |
| 4791 | cy_card[j].num_chips = -1; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4792 | cy_init_card(&cy_card[j]); |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 4793 | pci_set_drvdata(pdev, &cy_card[j]); |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4794 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4795 | dev_info(&pdev->dev, "Cyclades-Ze/PCI #%d found: %d channels starting " |
| 4796 | "from port %d.\n", j + 1, cy_pci_nchan, cy_next_channel); |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4797 | |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4798 | for (j = cy_next_channel; j < cy_next_channel + cy_pci_nchan; j++) |
| 4799 | tty_register_device(cy_serial_driver, j, &pdev->dev); |
Jiri Slaby | d407c78 | 2007-05-08 00:36:09 -0700 | [diff] [blame] | 4800 | cy_next_channel += cy_pci_nchan; |
| 4801 | |
| 4802 | return 0; |
| 4803 | } |
| 4804 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4805 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
| 4806 | const struct pci_device_id *ent) |
| 4807 | { |
| 4808 | unsigned char cyy_rev_id; |
Jiri Slaby | 80fada5 | 2007-05-08 00:36:41 -0700 | [diff] [blame] | 4809 | int cy_pci_irq; |
Jiri Slaby | 6d8248e8 | 2007-05-08 00:36:47 -0700 | [diff] [blame] | 4810 | __u32 mailbox; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4811 | void __iomem *cy_pci_addr0, *cy_pci_addr2; |
| 4812 | unsigned int device_id; |
| 4813 | unsigned short j, cy_pci_nchan, plx_ver; |
| 4814 | int retval; |
| 4815 | |
| 4816 | retval = pci_enable_device(pdev); |
| 4817 | if (retval) { |
| 4818 | dev_err(&pdev->dev, "cannot enable device\n"); |
| 4819 | return retval; |
| 4820 | } |
| 4821 | |
| 4822 | /* read PCI configuration area */ |
| 4823 | cy_pci_irq = pdev->irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4824 | pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id); |
| 4825 | |
| 4826 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
| 4827 | |
| 4828 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 4829 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4830 | dev_dbg(&pdev->dev, "Cyclom-Y/PCI found\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4831 | |
| 4832 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4833 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly " |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4834 | "set. Ignoring it...\n"); |
| 4835 | pdev->resource[2].flags &= ~IORESOURCE_IO; |
| 4836 | } |
| 4837 | |
| 4838 | /* Although we don't use this I/O region, we should |
| 4839 | request it from the kernel anyway, to avoid problems |
| 4840 | with other drivers accessing it. */ |
| 4841 | retval = pci_request_regions(pdev, "Cyclom-Y"); |
| 4842 | if (retval) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4843 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4844 | return retval; |
| 4845 | } |
| 4846 | #if defined(__alpha__) |
| 4847 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4848 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for " |
| 4849 | "low addresses on Alpha systems.\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4850 | return -EIO; |
| 4851 | } |
| 4852 | #endif |
| 4853 | cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Yctl); |
| 4854 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Ywin); |
| 4855 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4856 | dev_dbg(&pdev->dev, "Cyclom-Y/PCI: relocate winaddr=0x%p " |
| 4857 | "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0); |
| 4858 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4859 | cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * |
| 4860 | cyy_init_card(cy_pci_addr2, 1)); |
| 4861 | if (cy_pci_nchan == 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4862 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
| 4863 | "Serial-Modules\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4864 | return -EIO; |
| 4865 | } |
| 4866 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4867 | dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no " |
| 4868 | "channels are available. Change NR_PORTS in " |
| 4869 | "cyclades.c and recompile kernel.\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4870 | return -EIO; |
| 4871 | } |
| 4872 | /* fill the next cy_card structure available */ |
| 4873 | for (j = 0; j < NR_CARDS; j++) { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 4874 | if (cy_card[j].base_addr == NULL) |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4875 | break; |
| 4876 | } |
| 4877 | if (j == NR_CARDS) { /* no more cy_cards available */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4878 | dev_err(&pdev->dev, "Cyclom-Y/PCI found, but no more " |
| 4879 | "cards can be used. Change NR_CARDS in " |
| 4880 | "cyclades.c and recompile kernel.\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4881 | return -EIO; |
| 4882 | } |
| 4883 | |
| 4884 | /* allocate IRQ */ |
| 4885 | retval = request_irq(cy_pci_irq, cyy_interrupt, |
| 4886 | IRQF_SHARED, "Cyclom-Y", &cy_card[j]); |
| 4887 | if (retval) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4888 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4889 | return retval; |
| 4890 | } |
| 4891 | |
| 4892 | /* set cy_card */ |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4893 | cy_card[j].base_addr = cy_pci_addr2; |
| 4894 | cy_card[j].ctl_addr = cy_pci_addr0; |
Jiri Slaby | 80fada5 | 2007-05-08 00:36:41 -0700 | [diff] [blame] | 4895 | cy_card[j].irq = cy_pci_irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4896 | cy_card[j].bus_index = 1; |
| 4897 | cy_card[j].first_line = cy_next_channel; |
| 4898 | cy_card[j].num_chips = cy_pci_nchan / 4; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4899 | cy_init_card(&cy_card[j]); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4900 | pci_set_drvdata(pdev, &cy_card[j]); |
| 4901 | |
| 4902 | /* enable interrupts in the PCI interface */ |
| 4903 | plx_ver = readb(cy_pci_addr2 + CyPLX_VER) & 0x0f; |
| 4904 | switch (plx_ver) { |
| 4905 | case PLX_9050: |
| 4906 | |
| 4907 | cy_writeb(cy_pci_addr0 + 0x4c, 0x43); |
| 4908 | break; |
| 4909 | |
| 4910 | case PLX_9060: |
| 4911 | case PLX_9080: |
| 4912 | default: /* Old boards, use PLX_9060 */ |
| 4913 | |
| 4914 | plx_init(cy_pci_addr0, 0x6c); |
| 4915 | /* For some yet unknown reason, once the PLX9060 reloads |
| 4916 | the EEPROM, the IRQ is lost and, thus, we have to |
| 4917 | re-write it to the PCI config. registers. |
| 4918 | This will remain here until we find a permanent |
| 4919 | fix. */ |
| 4920 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, |
| 4921 | cy_pci_irq); |
| 4922 | |
| 4923 | cy_writew(cy_pci_addr0 + 0x68, |
| 4924 | readw(cy_pci_addr0 + 0x68) | 0x0900); |
| 4925 | break; |
| 4926 | } |
| 4927 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4928 | dev_info(&pdev->dev, "Cyclom-Y/PCI #%d found: %d channels " |
| 4929 | "starting from port %d.\n", j + 1, cy_pci_nchan, |
| 4930 | cy_next_channel); |
| 4931 | |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4932 | for (j = cy_next_channel; |
| 4933 | j < cy_next_channel + cy_pci_nchan; j++) |
| 4934 | tty_register_device(cy_serial_driver, j, &pdev->dev); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4935 | |
| 4936 | cy_next_channel += cy_pci_nchan; |
| 4937 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4938 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for " |
| 4939 | "low addresses\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4940 | return -EIO; |
| 4941 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4942 | dev_dbg(&pdev->dev, "Cyclades-Z/PCI found\n"); |
| 4943 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4944 | cy_pci_addr0 = pci_iomap(pdev, 0, CyPCI_Zctl); |
| 4945 | |
| 4946 | /* Disable interrupts on the PLX before resetting it */ |
| 4947 | cy_writew(cy_pci_addr0 + 0x68, |
| 4948 | readw(cy_pci_addr0 + 0x68) & ~0x0900); |
| 4949 | |
| 4950 | plx_init(cy_pci_addr0, 0x6c); |
| 4951 | /* For some yet unknown reason, once the PLX9060 reloads |
| 4952 | the EEPROM, the IRQ is lost and, thus, we have to |
| 4953 | re-write it to the PCI config. registers. |
| 4954 | This will remain here until we find a permanent |
| 4955 | fix. */ |
Jiri Slaby | 80fada5 | 2007-05-08 00:36:41 -0700 | [diff] [blame] | 4956 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4957 | |
| 4958 | mailbox = (__u32)readl(&((struct RUNTIME_9060 __iomem *) |
| 4959 | cy_pci_addr0)->mail_box_0); |
| 4960 | |
| 4961 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4962 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly " |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4963 | "set. Ignoring it...\n"); |
| 4964 | pdev->resource[2].flags &= ~IORESOURCE_IO; |
| 4965 | } |
| 4966 | |
| 4967 | /* Although we don't use this I/O region, we should |
| 4968 | request it from the kernel anyway, to avoid problems |
| 4969 | with other drivers accessing it. */ |
| 4970 | retval = pci_request_regions(pdev, "Cyclades-Z"); |
| 4971 | if (retval) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4972 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4973 | return retval; |
| 4974 | } |
| 4975 | |
| 4976 | if (mailbox == ZE_V1) { |
Jiri Slaby | 6d8248e8 | 2007-05-08 00:36:47 -0700 | [diff] [blame] | 4977 | retval = cy_init_Ze(cy_pci_addr0, cy_pci_irq, pdev); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4978 | return retval; |
| 4979 | } else { |
| 4980 | cy_pci_addr2 = pci_iomap(pdev, 2, CyPCI_Zwin); |
| 4981 | } |
| 4982 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4983 | dev_dbg(&pdev->dev, "Cyclades-Z/PCI: relocate winaddr=0x%p " |
| 4984 | "ctladdr=0x%p\n", cy_pci_addr2, cy_pci_addr0); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4985 | #ifdef CY_PCI_DEBUG |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4986 | if (mailbox == ZO_V1) { |
| 4987 | cy_writel(&((struct RUNTIME_9060 *) |
| 4988 | (cy_pci_addr0))->loc_addr_base, |
| 4989 | WIN_CREG); |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4990 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA id %lx, " |
| 4991 | "ver %lx\n", (ulong)(0xff & |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4992 | readl(&((struct CUSTOM_REG *) |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4993 | cy_pci_addr2)->fpga_id)), |
| 4994 | (ulong)(0xff & readl(&((struct CUSTOM_REG *) |
| 4995 | cy_pci_addr2)->fpga_version))); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4996 | cy_writel(&((struct RUNTIME_9060 *) |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4997 | cy_pci_addr0)->loc_addr_base, WIN_RAM); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4998 | } else { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4999 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New Cyclades-Z " |
| 5000 | "board. FPGA not loaded\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5001 | } |
| 5002 | #endif |
| 5003 | /* The following clears the firmware id word. This |
| 5004 | ensures that the driver will not attempt to talk to |
| 5005 | the board until it has been properly initialized. |
| 5006 | */ |
| 5007 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) |
| 5008 | cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); |
| 5009 | |
| 5010 | /* This must be a Cyclades-8Zo/PCI. The extendable |
| 5011 | version will have a different device_id and will |
| 5012 | be allocated its maximum number of ports. */ |
| 5013 | cy_pci_nchan = 8; |
| 5014 | |
| 5015 | if ((cy_next_channel + cy_pci_nchan) > NR_PORTS) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5016 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
| 5017 | "channels are available. Change NR_PORTS in " |
| 5018 | "cyclades.c and recompile kernel.\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5019 | return -EIO; |
| 5020 | } |
| 5021 | |
| 5022 | /* fill the next cy_card structure available */ |
| 5023 | for (j = 0; j < NR_CARDS; j++) { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 5024 | if (cy_card[j].base_addr == NULL) |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5025 | break; |
| 5026 | } |
| 5027 | if (j == NR_CARDS) { /* no more cy_cards available */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5028 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
| 5029 | "more cards can be used. Change NR_CARDS in " |
| 5030 | "cyclades.c and recompile kernel.\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5031 | return -EIO; |
| 5032 | } |
| 5033 | #ifdef CONFIG_CYZ_INTR |
| 5034 | /* allocate IRQ only if board has an IRQ */ |
| 5035 | if ((cy_pci_irq != 0) && (cy_pci_irq != 255)) { |
| 5036 | retval = request_irq(cy_pci_irq, cyz_interrupt, |
| 5037 | IRQF_SHARED, "Cyclades-Z", |
| 5038 | &cy_card[j]); |
| 5039 | if (retval) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5040 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5041 | return retval; |
| 5042 | } |
| 5043 | } |
| 5044 | #endif /* CONFIG_CYZ_INTR */ |
| 5045 | |
| 5046 | /* set cy_card */ |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5047 | cy_card[j].base_addr = cy_pci_addr2; |
| 5048 | cy_card[j].ctl_addr = cy_pci_addr0; |
Jiri Slaby | 80fada5 | 2007-05-08 00:36:41 -0700 | [diff] [blame] | 5049 | cy_card[j].irq = cy_pci_irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5050 | cy_card[j].bus_index = 1; |
| 5051 | cy_card[j].first_line = cy_next_channel; |
| 5052 | cy_card[j].num_chips = -1; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 5053 | cy_init_card(&cy_card[j]); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5054 | pci_set_drvdata(pdev, &cy_card[j]); |
| 5055 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5056 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI #%d found: %d channels " |
| 5057 | "starting from port %d.\n", j + 1, cy_pci_nchan, |
| 5058 | cy_next_channel); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5059 | |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 5060 | for (j = cy_next_channel; |
| 5061 | j < cy_next_channel + cy_pci_nchan; j++) |
| 5062 | tty_register_device(cy_serial_driver, j, &pdev->dev); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5063 | cy_next_channel += cy_pci_nchan; |
| 5064 | } |
| 5065 | |
| 5066 | return 0; |
| 5067 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 5068 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5069 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5070 | { |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 5071 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
Jiri Slaby | f3851e7 | 2007-05-08 00:36:16 -0700 | [diff] [blame] | 5072 | unsigned int i; |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 5073 | |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 5074 | /* non-Z with old PLX */ |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 5075 | if (!IS_CYC_Z(*cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
| 5076 | PLX_9050) |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 5077 | cy_writeb(cinfo->ctl_addr + 0x4c, 0); |
| 5078 | else |
| 5079 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 5080 | if (!IS_CYC_Z(*cinfo)) |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 5081 | #endif |
| 5082 | cy_writew(cinfo->ctl_addr + 0x68, |
| 5083 | readw(cinfo->ctl_addr + 0x68) & ~0x0900); |
| 5084 | |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 5085 | pci_iounmap(pdev, cinfo->base_addr); |
| 5086 | if (cinfo->ctl_addr) |
| 5087 | pci_iounmap(pdev, cinfo->ctl_addr); |
| 5088 | if (cinfo->irq |
| 5089 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 5090 | && !IS_CYC_Z(*cinfo) |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 5091 | #endif /* CONFIG_CYZ_INTR */ |
| 5092 | ) |
| 5093 | free_irq(cinfo->irq, cinfo); |
| 5094 | pci_release_regions(pdev); |
| 5095 | |
| 5096 | cinfo->base_addr = NULL; |
Jiri Slaby | f3851e7 | 2007-05-08 00:36:16 -0700 | [diff] [blame] | 5097 | for (i = cinfo->first_line; i < cinfo->first_line + cinfo->nports; i++){ |
| 5098 | cy_port[i].line = -1; |
| 5099 | cy_port[i].magic = -1; |
| 5100 | } |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 5101 | for (i = cinfo->first_line; i < cinfo->first_line + |
| 5102 | cinfo->nports; i++) |
| 5103 | tty_unregister_device(cy_serial_driver, i); |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 5104 | } |
| 5105 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5106 | static struct pci_driver cy_pci_driver = { |
| 5107 | .name = "cyclades", |
| 5108 | .id_table = cy_pci_dev_id, |
| 5109 | .probe = cy_pci_probe, |
| 5110 | .remove = __devexit_p(cy_pci_remove) |
| 5111 | }; |
| 5112 | #endif |
| 5113 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5114 | static int |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5115 | 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] | 5116 | int *eof, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5117 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5118 | struct cyclades_port *info; |
| 5119 | int i; |
| 5120 | int len = 0; |
| 5121 | off_t begin = 0; |
| 5122 | off_t pos = 0; |
| 5123 | int size; |
| 5124 | __u32 cur_jifs = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5125 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5126 | size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn " |
| 5127 | "IdleIn Overruns Ldisc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5128 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5129 | pos += size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5130 | len += size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5131 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5132 | /* Output one line for each known port */ |
| 5133 | for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) { |
| 5134 | info = &cy_port[i]; |
| 5135 | |
| 5136 | if (info->count) |
| 5137 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " |
| 5138 | "%8lu %9lu %6ld\n", info->line, |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5139 | (cur_jifs - info->idle_stats.in_use) / HZ, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5140 | info->idle_stats.xmit_bytes, |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5141 | (cur_jifs - info->idle_stats.xmit_idle) / HZ, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5142 | info->idle_stats.recv_bytes, |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 5143 | (cur_jifs - info->idle_stats.recv_idle) / HZ, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5144 | info->idle_stats.overruns, |
| 5145 | (long)info->tty->ldisc.num); |
| 5146 | else |
| 5147 | size = sprintf(buf + len, "%3d %8lu %10lu %8lu %10lu " |
| 5148 | "%8lu %9lu %6ld\n", |
| 5149 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); |
| 5150 | len += size; |
| 5151 | pos = begin + len; |
| 5152 | |
| 5153 | if (pos < offset) { |
| 5154 | len = 0; |
| 5155 | begin = pos; |
| 5156 | } |
| 5157 | if (pos > offset + length) |
| 5158 | goto done; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5159 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5160 | *eof = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5161 | done: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5162 | *start = buf + (offset - begin); /* Start of wanted data */ |
| 5163 | len -= (offset - begin); /* Start slop */ |
| 5164 | if (len > length) |
| 5165 | len = length; /* Ending slop */ |
| 5166 | if (len < 0) |
| 5167 | len = 0; |
| 5168 | return len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5169 | } |
| 5170 | |
| 5171 | /* The serial driver boot-time initialization code! |
| 5172 | Hardware I/O ports are mapped to character special devices on a |
| 5173 | first found, first allocated manner. That is, this code searches |
| 5174 | for Cyclom cards in the system. As each is found, it is probed |
| 5175 | to discover how many chips (and thus how many ports) are present. |
| 5176 | These ports are mapped to the tty ports 32 and upward in monotonic |
| 5177 | fashion. If an 8-port card is replaced with a 16-port card, the |
| 5178 | port mapping on a following card will shift. |
| 5179 | |
| 5180 | This approach is different from what is used in the other serial |
| 5181 | device driver because the Cyclom is more properly a multiplexer, |
| 5182 | not just an aggregation of serial ports on one card. |
| 5183 | |
| 5184 | If there are more cards with more ports than have been |
| 5185 | statically allocated above, a warning is printed and the |
| 5186 | extra ports are ignored. |
| 5187 | */ |
| 5188 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 5189 | static const struct tty_operations cy_ops = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5190 | .open = cy_open, |
| 5191 | .close = cy_close, |
| 5192 | .write = cy_write, |
| 5193 | .put_char = cy_put_char, |
| 5194 | .flush_chars = cy_flush_chars, |
| 5195 | .write_room = cy_write_room, |
| 5196 | .chars_in_buffer = cy_chars_in_buffer, |
| 5197 | .flush_buffer = cy_flush_buffer, |
| 5198 | .ioctl = cy_ioctl, |
| 5199 | .throttle = cy_throttle, |
| 5200 | .unthrottle = cy_unthrottle, |
| 5201 | .set_termios = cy_set_termios, |
| 5202 | .stop = cy_stop, |
| 5203 | .start = cy_start, |
| 5204 | .hangup = cy_hangup, |
| 5205 | .break_ctl = cy_break, |
| 5206 | .wait_until_sent = cy_wait_until_sent, |
| 5207 | .read_proc = cyclades_get_proc_info, |
| 5208 | .tiocmget = cy_tiocmget, |
| 5209 | .tiocmset = cy_tiocmset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5210 | }; |
| 5211 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5212 | static int __init cy_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5213 | { |
Jiri Slaby | 14a55a6 | 2007-05-08 00:36:18 -0700 | [diff] [blame] | 5214 | unsigned int i, nboards; |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5215 | int retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5216 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5217 | cy_serial_driver = alloc_tty_driver(NR_PORTS); |
| 5218 | if (!cy_serial_driver) |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5219 | goto err; |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5220 | |
| 5221 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", |
| 5222 | __DATE__, __TIME__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5223 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5224 | /* Initialize the tty_driver structure */ |
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 | cy_serial_driver->owner = THIS_MODULE; |
| 5227 | cy_serial_driver->driver_name = "cyclades"; |
| 5228 | cy_serial_driver->name = "ttyC"; |
| 5229 | cy_serial_driver->major = CYCLADES_MAJOR; |
| 5230 | cy_serial_driver->minor_start = 0; |
| 5231 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 5232 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; |
| 5233 | cy_serial_driver->init_termios = tty_std_termios; |
| 5234 | cy_serial_driver->init_termios.c_cflag = |
| 5235 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 5236 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5237 | tty_set_operations(cy_serial_driver, &cy_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5238 | |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5239 | retval = tty_register_driver(cy_serial_driver); |
| 5240 | if (retval) { |
| 5241 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); |
| 5242 | goto err_frtty; |
| 5243 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5244 | |
Jiri Slaby | f3851e7 | 2007-05-08 00:36:16 -0700 | [diff] [blame] | 5245 | for (i = 0; i < NR_PORTS; i++) { |
| 5246 | cy_port[i].line = -1; |
| 5247 | cy_port[i].magic = -1; |
| 5248 | } |
| 5249 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5250 | /* the code below is responsible to find the boards. Each different |
| 5251 | type of board has its own detection routine. If a board is found, |
| 5252 | the next cy_card structure available is set by the detection |
| 5253 | routine. These functions are responsible for checking the |
| 5254 | availability of cy_card and cy_port data structures and updating |
| 5255 | the cy_next_channel. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5256 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5257 | /* look for isa boards */ |
Jiri Slaby | 14a55a6 | 2007-05-08 00:36:18 -0700 | [diff] [blame] | 5258 | nboards = cy_detect_isa(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5259 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5260 | #ifdef CONFIG_PCI |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5261 | /* look for pci boards */ |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5262 | retval = pci_register_driver(&cy_pci_driver); |
| 5263 | if (retval && !nboards) |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5264 | goto err_unr; |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5265 | #endif |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5266 | |
| 5267 | return 0; |
| 5268 | err_unr: |
| 5269 | tty_unregister_driver(cy_serial_driver); |
| 5270 | err_frtty: |
| 5271 | put_tty_driver(cy_serial_driver); |
| 5272 | err: |
| 5273 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5274 | } /* cy_init */ |
| 5275 | |
| 5276 | static void __exit cy_cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5277 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5278 | int i, e1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5279 | |
| 5280 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 5281 | del_timer_sync(&cyz_timerlist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5282 | #endif /* CONFIG_CYZ_INTR */ |
| 5283 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5284 | if ((e1 = tty_unregister_driver(cy_serial_driver))) |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5285 | printk(KERN_ERR "failed to unregister Cyclades serial " |
| 5286 | "driver(%d)\n", e1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5287 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5288 | #ifdef CONFIG_PCI |
| 5289 | pci_unregister_driver(&cy_pci_driver); |
| 5290 | #endif |
| 5291 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5292 | for (i = 0; i < NR_CARDS; i++) { |
| 5293 | if (cy_card[i].base_addr) { |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 5294 | /* clear interrupt */ |
| 5295 | cy_writeb(cy_card[i].base_addr + Cy_ClrIntr, 0); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5296 | iounmap(cy_card[i].base_addr); |
| 5297 | if (cy_card[i].ctl_addr) |
| 5298 | iounmap(cy_card[i].ctl_addr); |
| 5299 | if (cy_card[i].irq |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5300 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 5301 | && !IS_CYC_Z(cy_card[i]) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5302 | #endif /* CONFIG_CYZ_INTR */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5303 | ) |
| 5304 | free_irq(cy_card[i].irq, &cy_card[i]); |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 5305 | for (e1 = cy_card[i].first_line; |
| 5306 | e1 < cy_card[i].first_line + |
| 5307 | cy_card[i].nports; e1++) |
| 5308 | tty_unregister_device(cy_serial_driver, e1); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5309 | } |
| 5310 | } |
Jiri Slaby | f2462bf | 2007-05-08 00:37:01 -0700 | [diff] [blame^] | 5311 | |
| 5312 | put_tty_driver(cy_serial_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5313 | } /* cy_cleanup_module */ |
| 5314 | |
| 5315 | module_init(cy_init); |
| 5316 | module_exit(cy_cleanup_module); |
| 5317 | |
| 5318 | MODULE_LICENSE("GPL"); |