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>. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Jiri Slaby | c8e1693 | 2007-05-08 00:37:05 -0700 | [diff] [blame] | 14 | * Copyright (C) 2007 Jiri Slaby <jirislaby@gmail.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | * |
| 16 | * Much of the design and some of the code came from serial.c |
| 17 | * which was copyright (C) 1991, 1992 Linus Torvalds. It was |
| 18 | * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, |
| 19 | * and then fixed as suggested by Michael K. Johnson 12/12/92. |
Jiri Slaby | c8e1693 | 2007-05-08 00:37:05 -0700 | [diff] [blame] | 20 | * Converted to pci probing and cleaned up by Jiri Slaby. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | * |
| 22 | * This version supports shared IRQ's (only for PCI boards). |
| 23 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | * Prevent users from opening non-existing Z ports. |
| 25 | * |
| 26 | * Revision 2.3.2.8 2000/07/06 18:14:16 ivan |
| 27 | * Fixed the PCI detection function to work properly on Alpha systems. |
| 28 | * Implemented support for TIOCSERGETLSR ioctl. |
| 29 | * Implemented full support for non-standard baud rates. |
| 30 | * |
| 31 | * Revision 2.3.2.7 2000/06/01 18:26:34 ivan |
| 32 | * Request PLX I/O region, although driver doesn't use it, to avoid |
| 33 | * problems with other drivers accessing it. |
| 34 | * Removed count for on-board buffer characters in cy_chars_in_buffer |
| 35 | * (Cyclades-Z only). |
| 36 | * |
| 37 | * Revision 2.3.2.6 2000/05/05 13:56:05 ivan |
| 38 | * Driver now reports physical instead of virtual memory addresses. |
| 39 | * Masks were added to some Cyclades-Z read accesses. |
| 40 | * Implemented workaround for PLX9050 bug that would cause a system lockup |
| 41 | * in certain systems, depending on the MMIO addresses allocated to the |
| 42 | * board. |
| 43 | * Changed the Tx interrupt programming in the CD1400 chips to boost up |
| 44 | * performance (Cyclom-Y only). |
| 45 | * Code is now compliant with the new module interface (module_[init|exit]). |
| 46 | * Make use of the PCI helper functions to access PCI resources. |
| 47 | * Did some code "housekeeping". |
| 48 | * |
| 49 | * Revision 2.3.2.5 2000/01/19 14:35:33 ivan |
| 50 | * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. |
| 51 | * |
| 52 | * Revision 2.3.2.4 2000/01/17 09:19:40 ivan |
| 53 | * Fixed SMP locking in Cyclom-Y interrupt handler. |
| 54 | * |
| 55 | * Revision 2.3.2.3 1999/12/28 12:11:39 ivan |
| 56 | * Added a new cyclades_card field called nports to allow the driver to |
| 57 | * know the exact number of ports found by the Z firmware after its load; |
| 58 | * RX buffer contention prevention logic on interrupt op mode revisited |
| 59 | * (Cyclades-Z only); |
| 60 | * Revisited printk's for Z debug; |
| 61 | * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; |
| 62 | * |
| 63 | * Revision 2.3.2.2 1999/10/01 11:27:43 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 64 | * Fixed bug in cyz_poll that would make all ports but port 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | * unable to transmit/receive data (Cyclades-Z only); |
| 66 | * Implemented logic to prevent the RX buffer from being stuck with data |
| 67 | * due to a driver / firmware race condition in interrupt op mode |
| 68 | * (Cyclades-Z only); |
| 69 | * Fixed bug in block_til_ready logic that would lead to a system crash; |
| 70 | * Revisited cy_close spinlock usage; |
| 71 | * |
| 72 | * Revision 2.3.2.1 1999/09/28 11:01:22 ivan |
| 73 | * Revisited CONFIG_PCI conditional compilation for PCI board support; |
| 74 | * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; |
| 75 | * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; |
| 76 | * Removed CTS handling from the driver -- this is now completely handled |
| 77 | * by the firmware (Cyclades-Z only); |
| 78 | * Flush RX on-board buffers on a port open (Cyclades-Z only); |
| 79 | * Fixed handling of ASYNC_SPD_* TTY flags; |
| 80 | * Module unload now unmaps all memory area allocated by ioremap; |
| 81 | * |
| 82 | * Revision 2.3.1.1 1999/07/15 16:45:53 ivan |
| 83 | * Removed CY_PROC conditional compilation; |
| 84 | * Implemented SMP-awareness for the driver; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 85 | * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | * functions; |
| 87 | * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs |
| 88 | * (irq=NN) as parameters (only for ISA boards); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 89 | * Fixed bug in set_line_char that would prevent the Cyclades-Z |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | * ports from being configured at speeds above 115.2Kbps; |
| 91 | * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control |
| 92 | * switching from working properly; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 93 | * The driver now only prints IRQ info for the Cyclades-Z if it's |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | * configured to work in interrupt mode; |
| 95 | * |
| 96 | * Revision 2.2.2.3 1999/06/28 11:13:29 ivan |
| 97 | * Added support for interrupt mode operation for the Z cards; |
| 98 | * Removed the driver inactivity control for the Z; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 99 | * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | * the Z firmware is not loaded yet; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 101 | * Replaced the "manual" Z Tx flush buffer by a call to a FW command of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | * same functionality; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 103 | * Implemented workaround for IRQ setting loss on the PCI configuration |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | * registers after a PCI bridge EEPROM reload (affects PLX9060 only); |
| 105 | * |
| 106 | * Revision 2.2.2.2 1999/05/14 17:18:15 ivan |
| 107 | * /proc entry location changed to /proc/tty/driver/cyclades; |
| 108 | * Added support to shared IRQ's (only for PCI boards); |
| 109 | * Added support for Cobalt Qube2 systems; |
| 110 | * IRQ [de]allocation scheme revisited; |
| 111 | * BREAK implementation changed in order to make use of the 'break_ctl' |
| 112 | * TTY facility; |
| 113 | * Fixed typo in TTY structure field 'driver_name'; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 114 | * Included a PCI bridge reset and EEPROM reload in the board |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | * initialization code (for both Y and Z series). |
| 116 | * |
| 117 | * Revision 2.2.2.1 1999/04/08 16:17:43 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 118 | * Fixed a bug in cy_wait_until_sent that was preventing the port to be |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | * closed properly after a SIGINT; |
| 120 | * Module usage counter scheme revisited; |
| 121 | * Added support to the upcoming Y PCI boards (i.e., support to additional |
| 122 | * PCI Device ID's). |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 123 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | * Revision 2.2.1.10 1999/01/20 16:14:29 ivan |
| 125 | * Removed all unnecessary page-alignement operations in ioremap calls |
| 126 | * (ioremap is currently safe for these operations). |
| 127 | * |
| 128 | * Revision 2.2.1.9 1998/12/30 18:18:30 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 129 | * Changed access to PLX PCI bridge registers from I/O to MMIO, in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | * order to make PLX9050-based boards work with certain motherboards. |
| 131 | * |
| 132 | * Revision 2.2.1.8 1998/11/13 12:46:20 ivan |
| 133 | * cy_close function now resets (correctly) the tty->closing flag; |
| 134 | * JIFFIES_DIFF macro fixed. |
| 135 | * |
| 136 | * Revision 2.2.1.7 1998/09/03 12:07:28 ivan |
| 137 | * Fixed bug in cy_close function, which was not informing HW of |
| 138 | * which port should have the reception disabled before doing so; |
| 139 | * fixed Cyclom-8YoP hardware detection bug. |
| 140 | * |
| 141 | * Revision 2.2.1.6 1998/08/20 17:15:39 ivan |
| 142 | * Fixed bug in cy_close function, which causes malfunction |
| 143 | * of one of the first 4 ports when a higher port is closed |
| 144 | * (Cyclom-Y only). |
| 145 | * |
| 146 | * Revision 2.2.1.5 1998/08/10 18:10:28 ivan |
| 147 | * Fixed Cyclom-4Yo hardware detection bug. |
| 148 | * |
| 149 | * Revision 2.2.1.4 1998/08/04 11:02:50 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 150 | * /proc/cyclades implementation with great collaboration of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | * Marc Lewis <marc@blarg.net>; |
| 152 | * cyy_interrupt was changed to avoid occurrence of kernel oopses |
| 153 | * during PPP operation. |
| 154 | * |
| 155 | * Revision 2.2.1.3 1998/06/01 12:09:10 ivan |
| 156 | * General code review in order to comply with 2.1 kernel standards; |
| 157 | * data loss prevention for slow devices revisited (cy_wait_until_sent |
| 158 | * was created); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 159 | * removed conditional compilation for new/old PCI structure support |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | * (now the driver only supports the new PCI structure). |
| 161 | * |
| 162 | * Revision 2.2.1.1 1998/03/19 16:43:12 ivan |
| 163 | * added conditional compilation for new/old PCI structure support; |
| 164 | * removed kernel series (2.0.x / 2.1.x) conditional compilation. |
| 165 | * |
| 166 | * Revision 2.1.1.3 1998/03/16 18:01:12 ivan |
| 167 | * cleaned up the data loss fix; |
| 168 | * fixed XON/XOFF handling once more (Cyclades-Z); |
| 169 | * general review of the driver routines; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 170 | * introduction of a mechanism to prevent data loss with slow |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | * printers, by forcing a delay before closing the port. |
| 172 | * |
| 173 | * Revision 2.1.1.2 1998/02/17 16:50:00 ivan |
| 174 | * fixed detection/handling of new CD1400 in Ye boards; |
| 175 | * fixed XON/XOFF handling (Cyclades-Z); |
| 176 | * fixed data loss caused by a premature port close; |
| 177 | * introduction of a flag that holds the CD1400 version ID per port |
| 178 | * (used by the CYGETCD1400VER new ioctl). |
| 179 | * |
| 180 | * Revision 2.1.1.1 1997/12/03 17:31:19 ivan |
| 181 | * Code review for the module cleanup routine; |
| 182 | * fixed RTS and DTR status report for new CD1400's in get_modem_info; |
| 183 | * includes anonymous changes regarding signal_pending. |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 184 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | * Revision 2.1 1997/11/01 17:42:41 ivan |
| 186 | * Changes in the driver to support Alpha systems (except 8Zo V_1); |
| 187 | * BREAK fix for the Cyclades-Z boards; |
| 188 | * driver inactivity control by FW implemented; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 189 | * introduction of flag that allows driver to take advantage of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | * a special CD1400 feature related to HW flow control; |
| 191 | * added support for the CD1400 rev. J (Cyclom-Y boards); |
| 192 | * introduction of ioctls to: |
| 193 | * - control the rtsdtr_inv flag (Cyclom-Y); |
| 194 | * - control the rflow flag (Cyclom-Y); |
| 195 | * - adjust the polling interval (Cyclades-Z); |
| 196 | * |
| 197 | * Revision 1.36.4.33 1997/06/27 19:00:00 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 198 | * Fixes related to kernel version conditional |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | * compilation. |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 200 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | * Revision 1.36.4.32 1997/06/14 19:30:00 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 202 | * Compatibility issues between kernels 2.0.x and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | * 2.1.x (mainly related to clear_bit function). |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 204 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | * Revision 1.36.4.31 1997/06/03 15:30:00 ivan |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 206 | * Changes to define the memory window according to the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | * board type. |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 208 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | * Revision 1.36.4.30 1997/05/16 15:30:00 daniel |
| 210 | * Changes to support new cycladesZ boards. |
| 211 | * |
| 212 | * Revision 1.36.4.29 1997/05/12 11:30:00 daniel |
| 213 | * Merge of Bentson's and Daniel's version 1.36.4.28. |
| 214 | * Corrects bug in cy_detect_pci: check if there are more |
| 215 | * ports than the number of static structs allocated. |
| 216 | * Warning message during initialization if this driver is |
| 217 | * used with the new generation of cycladesZ boards. Those |
| 218 | * will be supported only in next release of the driver. |
| 219 | * Corrects bug in cy_detect_pci and cy_detect_isa that |
| 220 | * returned wrong number of VALID boards, when a cyclomY |
| 221 | * was found with no serial modules connected. |
| 222 | * Changes to use current (2.1.x) kernel subroutine names |
| 223 | * and created macros for compilation with 2.0.x kernel, |
| 224 | * instead of the other way around. |
| 225 | * |
| 226 | * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson |
| 227 | * Change queue_task_irq_off to queue_task_irq. |
| 228 | * The inline function queue_task_irq_off (tqueue.h) |
| 229 | * was removed from latest releases of 2.1.x kernel. |
| 230 | * Use of macro __init to mark the initialization |
| 231 | * routines, so memory can be reused. |
| 232 | * Also incorporate implementation of critical region |
| 233 | * in function cleanup_module() created by anonymous |
| 234 | * linuxer. |
| 235 | * |
| 236 | * Revision 1.36.4.28 1997/04/25 16:00:00 daniel |
| 237 | * Change to support new firmware that solves DCD problem: |
| 238 | * application could fail to receive SIGHUP signal when DCD |
| 239 | * varying too fast. |
| 240 | * |
| 241 | * Revision 1.36.4.27 1997/03/26 10:30:00 daniel |
| 242 | * Changed for support linux versions 2.1.X. |
| 243 | * Backward compatible with linux versions 2.0.X. |
| 244 | * Corrected illegal use of filler field in |
| 245 | * CH_CTRL struct. |
| 246 | * Deleted some debug messages. |
| 247 | * |
| 248 | * Revision 1.36.4.26 1997/02/27 12:00:00 daniel |
| 249 | * Included check for NULL tty pointer in cyz_poll. |
| 250 | * |
| 251 | * Revision 1.36.4.25 1997/02/26 16:28:30 bentson |
| 252 | * Bill Foster at Blarg! Online services noticed that |
| 253 | * some of the switch elements of -Z modem control |
| 254 | * lacked a closing "break;" |
| 255 | * |
| 256 | * Revision 1.36.4.24 1997/02/24 11:00:00 daniel |
| 257 | * Changed low water threshold for buffer xmit_buf |
| 258 | * |
| 259 | * Revision 1.36.4.23 1996/12/02 21:50:16 bentson |
| 260 | * Marcio provided fix to modem status fetch for -Z |
| 261 | * |
| 262 | * Revision 1.36.4.22 1996/10/28 22:41:17 bentson |
| 263 | * improve mapping of -Z control page (thanks to Steve |
| 264 | * Price <stevep@fa.tdktca.com> for help on this) |
| 265 | * |
| 266 | * Revision 1.36.4.21 1996/09/10 17:00:10 bentson |
| 267 | * shift from CPU-bound to memcopy in cyz_polling operation |
| 268 | * |
| 269 | * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson |
| 270 | * Added support to set and report higher speeds. |
| 271 | * |
| 272 | * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito |
| 273 | * Some fixes in the HW flow control for the BETA release. |
| 274 | * Don't try to register the IRQ. |
| 275 | * |
| 276 | * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson |
| 277 | * make sure "cyc" appears in all kernel messages; all soft interrupts |
| 278 | * handled by same routine; recognize out-of-band reception; comment |
| 279 | * out some diagnostic messages; leave RTS/CTS flow control to hardware; |
Jean Delvare | 33430dc | 2005-10-30 15:02:20 -0800 | [diff] [blame] | 280 | * fix race condition in -Z buffer management; only -Y needs to explicitly |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | * flush chars; tidy up some startup messages; |
| 282 | * |
| 283 | * Revision 1.36.4.18 1996/07/25 18:57:31 bentson |
| 284 | * shift MOD_INC_USE_COUNT location to match |
| 285 | * serial.c; purge some diagnostic messages; |
| 286 | * |
| 287 | * Revision 1.36.4.17 1996/07/25 18:01:08 bentson |
| 288 | * enable modem status messages and fetch & process them; note |
| 289 | * time of last activity type for each port; set_line_char now |
| 290 | * supports more than line 0 and treats 0 baud correctly; |
| 291 | * get_modem_info senses rs_status; |
| 292 | * |
| 293 | * Revision 1.36.4.16 1996/07/20 08:43:15 bentson |
| 294 | * barely works--now's time to turn on |
| 295 | * more features 'til it breaks |
| 296 | * |
| 297 | * Revision 1.36.4.15 1996/07/19 22:30:06 bentson |
| 298 | * check more -Z board status; shorten boot message |
| 299 | * |
| 300 | * Revision 1.36.4.14 1996/07/19 22:20:37 bentson |
| 301 | * fix reference to ch_ctrl in startup; verify return |
| 302 | * values from cyz_issue_cmd and cyz_update_channel; |
| 303 | * more stuff to get modem control correct; |
| 304 | * |
| 305 | * Revision 1.36.4.13 1996/07/11 19:53:33 bentson |
| 306 | * more -Z stuff folded in; re-order changes to put -Z stuff |
| 307 | * after -Y stuff (to make changes clearer) |
| 308 | * |
| 309 | * Revision 1.36.4.12 1996/07/11 15:40:55 bentson |
| 310 | * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. |
| 311 | * Add code to send break. Clear firmware ID word at startup (so |
| 312 | * that other code won't talk to inactive board). |
| 313 | * |
| 314 | * Revision 1.36.4.11 1996/07/09 05:28:29 bentson |
| 315 | * add code for -Z in set_line_char |
| 316 | * |
| 317 | * Revision 1.36.4.10 1996/07/08 19:28:37 bentson |
| 318 | * fold more -Z stuff (or in some cases, error messages) |
| 319 | * into driver; add text to "don't know what to do" messages. |
| 320 | * |
| 321 | * Revision 1.36.4.9 1996/07/08 18:38:38 bentson |
| 322 | * moved compile-time flags near top of file; cosmetic changes |
| 323 | * to narrow text (to allow 2-up printing); changed many declarations |
| 324 | * to "static" to limit external symbols; shuffled code order to |
| 325 | * coalesce -Y and -Z specific code, also to put internal functions |
| 326 | * in order of tty_driver structure; added code to recognize -Z |
| 327 | * ports (and for moment, do nothing or report error); add cy_startup |
| 328 | * to parse boot command line for extra base addresses for ISA probes; |
| 329 | * |
| 330 | * Revision 1.36.4.8 1996/06/25 17:40:19 bentson |
| 331 | * reorder some code, fix types of some vars (int vs. long), |
| 332 | * add cy_setup to support user declared ISA addresses |
| 333 | * |
| 334 | * Revision 1.36.4.7 1996/06/21 23:06:18 bentson |
| 335 | * dump ioctl based firmware load (it's now a user level |
| 336 | * program); ensure uninitialzed ports cannot be used |
| 337 | * |
| 338 | * Revision 1.36.4.6 1996/06/20 23:17:19 bentson |
| 339 | * rename vars and restructure some code |
| 340 | * |
| 341 | * Revision 1.36.4.5 1996/06/14 15:09:44 bentson |
| 342 | * get right status back after boot load |
| 343 | * |
| 344 | * Revision 1.36.4.4 1996/06/13 19:51:44 bentson |
| 345 | * successfully loads firmware |
| 346 | * |
| 347 | * Revision 1.36.4.3 1996/06/13 06:08:33 bentson |
| 348 | * add more of the code for the boot/load ioctls |
| 349 | * |
| 350 | * Revision 1.36.4.2 1996/06/11 21:00:51 bentson |
| 351 | * start to add Z functionality--starting with ioctl |
| 352 | * for loading firmware |
| 353 | * |
| 354 | * Revision 1.36.4.1 1996/06/10 18:03:02 bentson |
| 355 | * added code to recognize Z/PCI card at initialization; report |
| 356 | * presence, but card is not initialized (because firmware needs |
| 357 | * to be loaded) |
| 358 | * |
| 359 | * Revision 1.36.3.8 1996/06/07 16:29:00 bentson |
| 360 | * starting minor number at zero; added missing verify_area |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 361 | * as noted by Heiko Eißfeldt <heiko@colossus.escape.de> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | * |
| 363 | * Revision 1.36.3.7 1996/04/19 21:06:18 bentson |
| 364 | * remove unneeded boot message & fix CLOCAL hardware flow |
| 365 | * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); |
| 366 | * remove unused diagnostic statements; minor 0 is first; |
| 367 | * |
| 368 | * Revision 1.36.3.6 1996/03/13 13:21:17 marcio |
| 369 | * The kernel function vremap (available only in later 1.3.xx kernels) |
| 370 | * allows the access to memory addresses above the RAM. This revision |
| 371 | * of the driver supports PCI boards below 1Mb (device id 0x100) and |
| 372 | * above 1Mb (device id 0x101). |
| 373 | * |
| 374 | * Revision 1.36.3.5 1996/03/07 15:20:17 bentson |
| 375 | * Some global changes to interrupt handling spilled into |
| 376 | * this driver--mostly unused arguments in system function |
| 377 | * calls. Also added change by Marcio Saito which should |
| 378 | * reduce lost interrupts at startup by fast processors. |
| 379 | * |
| 380 | * Revision 1.36.3.4 1995/11/13 20:45:10 bentson |
| 381 | * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed |
| 382 | * in 1.3.41 kernel to remove a possible race condition, extend |
| 383 | * some error messages, and let the driver run as a loadable module |
| 384 | * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a |
| 385 | * possible race condition. |
| 386 | * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. |
| 387 | * |
| 388 | * Revision 1.36.3.3 1995/11/13 19:44:48 bentson |
| 389 | * Changes by Linus Torvalds in 1.3.33 kernel distribution |
| 390 | * required due to reordering of driver initialization. |
| 391 | * Drivers are now initialized *after* memory management. |
| 392 | * |
| 393 | * Revision 1.36.3.2 1995/09/08 22:07:14 bentson |
| 394 | * remove printk from ISR; fix typo |
| 395 | * |
| 396 | * Revision 1.36.3.1 1995/09/01 12:00:42 marcio |
| 397 | * Minor fixes in the PCI board support. PCI function calls in |
| 398 | * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan |
| 399 | * <duncan@okay.com>. "bad serial count" message removed. |
| 400 | * |
| 401 | * Revision 1.36.3 1995/08/22 09:19:42 marcio |
| 402 | * Cyclom-Y/PCI support added. Changes in the cy_init routine and |
| 403 | * board initialization. Changes in the boot messages. The driver |
| 404 | * supports up to 4 boards and 64 ports by default. |
| 405 | * |
| 406 | * Revision 1.36.1.4 1995/03/29 06:14:14 bentson |
| 407 | * disambiguate between Cyclom-16Y and Cyclom-32Ye; |
| 408 | * |
| 409 | * Revision 1.36.1.3 1995/03/23 22:15:35 bentson |
| 410 | * add missing break in modem control block in ioctl switch statement |
| 411 | * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); |
| 412 | * |
| 413 | * Revision 1.36.1.2 1995/03/22 19:16:22 bentson |
| 414 | * make sure CTS flow control is set as soon as possible (thanks |
| 415 | * to note from David Lambert <lambert@chesapeake.rps.slb.com>); |
| 416 | * |
| 417 | * Revision 1.36.1.1 1995/03/13 15:44:43 bentson |
| 418 | * initialize defaults for receive threshold and stale data timeout; |
| 419 | * cosmetic changes; |
| 420 | * |
| 421 | * Revision 1.36 1995/03/10 23:33:53 bentson |
| 422 | * added support of chips 4-7 in 32 port Cyclom-Ye; |
| 423 | * fix cy_interrupt pointer dereference problem |
| 424 | * (Joe Portman <baron@aa.net>); |
| 425 | * give better error response if open is attempted on non-existent port |
| 426 | * (Zachariah Vaum <jchryslr@netcom.com>); |
| 427 | * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); |
| 428 | * conditional compilation for -16Y on systems with fast, noisy bus; |
| 429 | * comment out diagnostic print function; |
| 430 | * cleaned up table of base addresses; |
| 431 | * set receiver time-out period register to correct value, |
| 432 | * set receive threshold to better default values, |
| 433 | * set chip timer to more accurate 200 Hz ticking, |
| 434 | * add code to monitor and modify receive parameters |
| 435 | * (Rik Faith <faith@cs.unc.edu> Nick Simicich |
| 436 | * <njs@scifi.emi.net>); |
| 437 | * |
| 438 | * Revision 1.35 1994/12/16 13:54:18 steffen |
| 439 | * additional patch by Marcio Saito for board detection |
| 440 | * Accidently left out in 1.34 |
| 441 | * |
| 442 | * Revision 1.34 1994/12/10 12:37:12 steffen |
| 443 | * This is the corrected version as suggested by Marcio Saito |
| 444 | * |
| 445 | * Revision 1.33 1994/12/01 22:41:18 bentson |
| 446 | * add hooks to support more high speeds directly; add tytso |
| 447 | * patch regarding CLOCAL wakeups |
| 448 | * |
| 449 | * Revision 1.32 1994/11/23 19:50:04 bentson |
| 450 | * allow direct kernel control of higher signalling rates; |
| 451 | * look for cards at additional locations |
| 452 | * |
| 453 | * Revision 1.31 1994/11/16 04:33:28 bentson |
| 454 | * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- |
| 455 | * a problem in chars_in_buffer has been resolved by some |
| 456 | * small changes; this should yield smoother output |
| 457 | * |
| 458 | * Revision 1.30 1994/11/16 04:28:05 bentson |
| 459 | * Fix from Corey Minyard, Internet: minyard@metronet.com, |
| 460 | * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to |
| 461 | * cy_hangup that appears to clear up much (all?) of the |
| 462 | * DTR glitches; also he's added/cleaned-up diagnostic messages |
| 463 | * |
| 464 | * Revision 1.29 1994/11/16 04:16:07 bentson |
| 465 | * add change proposed by Ralph Sims, ralphs@halcyon.com, to |
| 466 | * operate higher speeds in same way as other serial ports; |
| 467 | * add more serial ports (for up to two 16-port muxes). |
| 468 | * |
| 469 | * Revision 1.28 1994/11/04 00:13:16 root |
| 470 | * turn off diagnostic messages |
| 471 | * |
| 472 | * Revision 1.27 1994/11/03 23:46:37 root |
| 473 | * bunch of changes to bring driver into greater conformance |
| 474 | * with the serial.c driver (looking for missed fixes) |
| 475 | * |
| 476 | * Revision 1.26 1994/11/03 22:40:36 root |
| 477 | * automatic interrupt probing fixed. |
| 478 | * |
| 479 | * Revision 1.25 1994/11/03 20:17:02 root |
| 480 | * start to implement auto-irq |
| 481 | * |
| 482 | * Revision 1.24 1994/11/03 18:01:55 root |
| 483 | * still working on modem signals--trying not to drop DTR |
| 484 | * during the getty/login processes |
| 485 | * |
| 486 | * Revision 1.23 1994/11/03 17:51:36 root |
| 487 | * extend baud rate support; set receive threshold as function |
| 488 | * of baud rate; fix some problems with RTS/CTS; |
| 489 | * |
| 490 | * Revision 1.22 1994/11/02 18:05:35 root |
| 491 | * changed arguments to udelay to type long to get |
| 492 | * delays to be of correct duration |
| 493 | * |
| 494 | * Revision 1.21 1994/11/02 17:37:30 root |
| 495 | * employ udelay (after calibrating loops_per_second earlier |
| 496 | * in init/main.c) instead of using home-grown delay routines |
| 497 | * |
| 498 | * Revision 1.20 1994/11/02 03:11:38 root |
| 499 | * cy_chars_in_buffer forces a return value of 0 to let |
| 500 | * login work (don't know why it does); some functions |
| 501 | * that were returning EFAULT, now executes the code; |
| 502 | * more work on deciding when to disable xmit interrupts; |
| 503 | * |
| 504 | * Revision 1.19 1994/11/01 20:10:14 root |
| 505 | * define routine to start transmission interrupts (by enabling |
| 506 | * transmit interrupts); directly enable/disable modem interrupts; |
| 507 | * |
| 508 | * Revision 1.18 1994/11/01 18:40:45 bentson |
| 509 | * Don't always enable transmit interrupts in startup; interrupt on |
| 510 | * TxMpty instead of TxRdy to help characters get out before shutdown; |
| 511 | * restructure xmit interrupt to check for chars first and quit if |
| 512 | * none are ready to go; modem status (MXVRx) is upright, _not_ inverted |
| 513 | * (to my view); |
| 514 | * |
| 515 | * Revision 1.17 1994/10/30 04:39:45 bentson |
| 516 | * rename serial_driver and callout_driver to cy_serial_driver and |
| 517 | * cy_callout_driver to avoid linkage interference; initialize |
| 518 | * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port |
| 519 | * from cyclades_port structure; add paranoia check to cy_close; |
| 520 | * |
| 521 | * Revision 1.16 1994/10/30 01:14:33 bentson |
| 522 | * change major numbers; add some _early_ return statements; |
| 523 | * |
| 524 | * Revision 1.15 1994/10/29 06:43:15 bentson |
| 525 | * final tidying up for clean compile; enable some error reporting |
| 526 | * |
| 527 | * Revision 1.14 1994/10/28 20:30:22 Bentson |
| 528 | * lots of changes to drag the driver towards the new tty_io |
| 529 | * structures and operation. not expected to work, but may |
| 530 | * compile cleanly. |
| 531 | * |
| 532 | * Revision 1.13 1994/07/21 23:08:57 Bentson |
| 533 | * add some diagnostic cruft; support 24 lines (for testing |
| 534 | * both -8Y and -16Y cards; be more thorough in servicing all |
| 535 | * chips during interrupt; add "volatile" a few places to |
| 536 | * circumvent compiler optimizations; fix base & offset |
| 537 | * computations in block_til_ready (was causing chip 0 to |
| 538 | * stop operation) |
| 539 | * |
| 540 | * Revision 1.12 1994/07/19 16:42:11 Bentson |
| 541 | * add some hackery for kernel version 1.1.8; expand |
| 542 | * error messages; refine timing for delay loops and |
| 543 | * declare loop params volatile |
| 544 | * |
| 545 | * Revision 1.11 1994/06/11 21:53:10 bentson |
| 546 | * get use of save_car right in transmit interrupt service |
| 547 | * |
| 548 | * Revision 1.10.1.1 1994/06/11 21:31:18 bentson |
| 549 | * add some diagnostic printing; try to fix save_car stuff |
| 550 | * |
| 551 | * Revision 1.10 1994/06/11 20:36:08 bentson |
| 552 | * clean up compiler warnings |
| 553 | * |
| 554 | * Revision 1.9 1994/06/11 19:42:46 bentson |
| 555 | * added a bunch of code to support modem signalling |
| 556 | * |
| 557 | * Revision 1.8 1994/06/11 17:57:07 bentson |
| 558 | * recognize break & parity error |
| 559 | * |
| 560 | * Revision 1.7 1994/06/05 05:51:34 bentson |
| 561 | * Reorder baud table to be monotonic; add cli to CP; discard |
| 562 | * incoming characters and status if the line isn't open; start to |
| 563 | * fold code into cy_throttle; start to port get_serial_info, |
| 564 | * set_serial_info, get_modem_info, set_modem_info, and send_break |
| 565 | * from serial.c; expand cy_ioctl; relocate and expand config_setup; |
| 566 | * get flow control characters from tty struct; invalidate ports w/o |
| 567 | * hardware; |
| 568 | * |
| 569 | * Revision 1.6 1994/05/31 18:42:21 bentson |
| 570 | * add a loop-breaker in the interrupt service routine; |
| 571 | * note when port is initialized so that it can be shut |
| 572 | * down under the right conditions; receive works without |
| 573 | * any obvious errors |
| 574 | * |
| 575 | * Revision 1.5 1994/05/30 00:55:02 bentson |
| 576 | * transmit works without obvious errors |
| 577 | * |
| 578 | * Revision 1.4 1994/05/27 18:46:27 bentson |
| 579 | * incorporated more code from lib_y.c; can now print short |
| 580 | * strings under interrupt control to port zero; seems to |
| 581 | * select ports/channels/lines correctly |
| 582 | * |
| 583 | * Revision 1.3 1994/05/25 22:12:44 bentson |
| 584 | * shifting from multi-port on a card to proper multiplexor |
| 585 | * data structures; added skeletons of most routines |
| 586 | * |
| 587 | * Revision 1.2 1994/05/19 13:21:43 bentson |
| 588 | * start to crib from other sources |
| 589 | * |
| 590 | */ |
| 591 | |
Jiri Slaby | c8e1693 | 2007-05-08 00:37:05 -0700 | [diff] [blame] | 592 | #define CY_VERSION "2.5" |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | /* If you need to install more boards than NR_CARDS, change the constant |
| 595 | in the definition below. No other change is necessary to support up to |
| 596 | eight boards. Beyond that you'll have to extend cy_isa_addresses. */ |
| 597 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 598 | #define NR_CARDS 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | /* |
| 601 | If the total number of ports is larger than NR_PORTS, change this |
| 602 | constant in the definition below. No other change is necessary to |
| 603 | support more boards/ports. */ |
| 604 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 605 | #define NR_PORTS 256 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | #define ZO_V1 0 |
| 608 | #define ZO_V2 1 |
| 609 | #define ZE_V1 2 |
| 610 | |
| 611 | #define SERIAL_PARANOIA_CHECK |
| 612 | #undef CY_DEBUG_OPEN |
| 613 | #undef CY_DEBUG_THROTTLE |
| 614 | #undef CY_DEBUG_OTHER |
| 615 | #undef CY_DEBUG_IO |
| 616 | #undef CY_DEBUG_COUNT |
| 617 | #undef CY_DEBUG_DTR |
| 618 | #undef CY_DEBUG_WAIT_UNTIL_SENT |
| 619 | #undef CY_DEBUG_INTERRUPTS |
| 620 | #undef CY_16Y_HACK |
| 621 | #undef CY_ENABLE_MONITORING |
| 622 | #undef CY_PCI_DEBUG |
| 623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | /* |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 625 | * Include section |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | #include <linux/module.h> |
| 628 | #include <linux/errno.h> |
| 629 | #include <linux/signal.h> |
| 630 | #include <linux/sched.h> |
| 631 | #include <linux/timer.h> |
| 632 | #include <linux/interrupt.h> |
| 633 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 634 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | #include <linux/serial.h> |
Alexey Dobriyan | 405f557 | 2009-07-11 22:08:37 +0400 | [diff] [blame] | 636 | #include <linux/smp_lock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | #include <linux/major.h> |
| 638 | #include <linux/string.h> |
| 639 | #include <linux/fcntl.h> |
| 640 | #include <linux/ptrace.h> |
| 641 | #include <linux/cyclades.h> |
| 642 | #include <linux/mm.h> |
| 643 | #include <linux/ioport.h> |
| 644 | #include <linux/init.h> |
| 645 | #include <linux/delay.h> |
| 646 | #include <linux/spinlock.h> |
| 647 | #include <linux/bitops.h> |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 648 | #include <linux/firmware.h> |
Scott James Remnant | 9f56fad | 2009-04-06 17:33:04 +0100 | [diff] [blame] | 649 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | |
| 651 | #include <asm/system.h> |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 652 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | #include <asm/irq.h> |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 654 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 661 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 663 | static void cy_throttle(struct tty_struct *tty); |
| 664 | static void cy_send_xchar(struct tty_struct *tty, char ch); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | #ifndef SERIAL_XMIT_SIZE |
| 667 | #define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) |
| 668 | #endif |
| 669 | #define WAKEUP_CHARS 256 |
| 670 | |
| 671 | #define STD_COM_FLAGS (0) |
| 672 | |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 673 | /* firmware stuff */ |
| 674 | #define ZL_MAX_BLOCKS 16 |
| 675 | #define DRIVER_VERSION 0x02010203 |
| 676 | #define RAM_SIZE 0x80000 |
| 677 | |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 678 | enum zblock_type { |
| 679 | ZBLOCK_PRG = 0, |
| 680 | ZBLOCK_FPGA = 1 |
| 681 | }; |
| 682 | |
| 683 | struct zfile_header { |
| 684 | char name[64]; |
| 685 | char date[32]; |
| 686 | char aux[32]; |
| 687 | u32 n_config; |
| 688 | u32 config_offset; |
| 689 | u32 n_blocks; |
| 690 | u32 block_offset; |
| 691 | u32 reserved[9]; |
| 692 | } __attribute__ ((packed)); |
| 693 | |
| 694 | struct zfile_config { |
| 695 | char name[64]; |
| 696 | u32 mailbox; |
| 697 | u32 function; |
| 698 | u32 n_blocks; |
| 699 | u32 block_list[ZL_MAX_BLOCKS]; |
| 700 | } __attribute__ ((packed)); |
| 701 | |
| 702 | struct zfile_block { |
| 703 | u32 type; |
| 704 | u32 file_offset; |
| 705 | u32 ram_offset; |
| 706 | u32 size; |
| 707 | } __attribute__ ((packed)); |
| 708 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | static struct tty_driver *cy_serial_driver; |
| 710 | |
| 711 | #ifdef CONFIG_ISA |
| 712 | /* This is the address lookup table. The driver will probe for |
| 713 | Cyclom-Y/ISA boards at all addresses in here. If you want the |
| 714 | driver to probe addresses at a different address, add it to |
| 715 | this table. If the driver is probing some other board and |
| 716 | causing problems, remove the offending address from this table. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | */ |
| 718 | |
| 719 | static unsigned int cy_isa_addresses[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 720 | 0xD0000, |
| 721 | 0xD2000, |
| 722 | 0xD4000, |
| 723 | 0xD6000, |
| 724 | 0xD8000, |
| 725 | 0xDA000, |
| 726 | 0xDC000, |
| 727 | 0xDE000, |
| 728 | 0, 0, 0, 0, 0, 0, 0, 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | }; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 730 | |
Tobias Klauser | fe97107 | 2006-01-09 20:54:02 -0800 | [diff] [blame] | 731 | #define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | |
| 733 | #ifdef MODULE |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 734 | static long maddr[NR_CARDS]; |
| 735 | static int irq[NR_CARDS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | |
| 737 | module_param_array(maddr, long, NULL, 0); |
| 738 | module_param_array(irq, int, NULL, 0); |
| 739 | #endif |
| 740 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 741 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | /* This is the per-card data structure containing address, irq, number of |
| 744 | channels, etc. This driver supports a maximum of NR_CARDS cards. |
| 745 | */ |
| 746 | static struct cyclades_card cy_card[NR_CARDS]; |
| 747 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 748 | static int cy_next_channel; /* next minor available */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
| 750 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | * This is used to look up the divisor speeds and the timeouts |
| 752 | * We're normally limited to 15 distinct baud rates. The extra |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 753 | * are accessed via settings in info->port.flags. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, |
| 755 | * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, |
| 756 | * HI VHI |
| 757 | * 20 |
| 758 | */ |
| 759 | static int baud_table[] = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 760 | 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, |
| 761 | 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000, |
| 762 | 230400, 0 |
| 763 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 765 | static char baud_co_25[] = { /* 25 MHz clock option table */ |
| 766 | /* value => 00 01 02 03 04 */ |
| 767 | /* divide by 8 32 128 512 2048 */ |
| 768 | 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, |
| 769 | 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| 770 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 772 | static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ |
| 773 | 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, |
| 774 | 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15 |
| 775 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 777 | static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ |
| 778 | /* value => 00 01 02 03 04 */ |
| 779 | /* divide by 8 32 128 512 2048 */ |
| 780 | 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, |
| 781 | 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 782 | 0x00 |
| 783 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 785 | static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ |
| 786 | 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, |
| 787 | 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, |
| 788 | 0x21 |
| 789 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 791 | static char baud_cor3[] = { /* receive threshold */ |
| 792 | 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 793 | 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, |
| 794 | 0x07 |
| 795 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
| 797 | /* |
| 798 | * The Cyclades driver implements HW flow control as any serial driver. |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 799 | * The cyclades_port structure member rflow and the vector rflow_thr |
| 800 | * allows us to take advantage of a special feature in the CD1400 to avoid |
| 801 | * data loss even when the system interrupt latency is too high. These flags |
| 802 | * are to be used only with very special applications. Setting these flags |
| 803 | * requires the use of a special cable (DTR and RTS reversed). In the new |
| 804 | * CD1400-based boards (rev. 6.00 or later), there is no need for special |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | * cables. |
| 806 | */ |
| 807 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 808 | static char rflow_thr[] = { /* rflow threshold */ |
| 809 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 810 | 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, |
| 811 | 0x0a |
| 812 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | |
| 814 | /* The Cyclom-Ye has placed the sequential chips in non-sequential |
| 815 | * address order. This look-up table overcomes that problem. |
| 816 | */ |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 817 | static const unsigned int cy_chip_offset[] = { 0x0000, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 818 | 0x0400, |
| 819 | 0x0800, |
| 820 | 0x0C00, |
| 821 | 0x0200, |
| 822 | 0x0600, |
| 823 | 0x0A00, |
| 824 | 0x0E00 |
| 825 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
| 827 | /* PCI related definitions */ |
| 828 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | #ifdef CONFIG_PCI |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 830 | static struct pci_device_id cy_pci_dev_id[] __devinitdata = { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 831 | /* PCI < 1Mb */ |
| 832 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) }, |
| 833 | /* PCI > 1Mb */ |
| 834 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) }, |
| 835 | /* 4Y PCI < 1Mb */ |
| 836 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) }, |
| 837 | /* 4Y PCI > 1Mb */ |
| 838 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) }, |
| 839 | /* 8Y PCI < 1Mb */ |
| 840 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) }, |
| 841 | /* 8Y PCI > 1Mb */ |
| 842 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) }, |
| 843 | /* Z PCI < 1Mb */ |
| 844 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) }, |
| 845 | /* Z PCI > 1Mb */ |
| 846 | { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) }, |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 847 | { } /* end of table */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 848 | }; |
Jiri Slaby | 893de2d | 2007-02-12 00:51:49 -0800 | [diff] [blame] | 849 | MODULE_DEVICE_TABLE(pci, cy_pci_dev_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | #endif |
| 851 | |
| 852 | static void cy_start(struct tty_struct *); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 853 | static void cy_set_line_char(struct cyclades_port *, struct tty_struct *); |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 854 | static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | #ifdef CONFIG_ISA |
| 856 | static unsigned detect_isa_irq(void __iomem *); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 857 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | #ifndef CONFIG_CYZ_INTR |
| 860 | static void cyz_poll(unsigned long); |
| 861 | |
| 862 | /* The Cyclades-Z polling cycle is defined by this variable */ |
| 863 | static long cyz_polling_cycle = CZ_DEF_POLL; |
| 864 | |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 865 | static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 867 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | static void cyz_rx_restart(unsigned long); |
| 869 | static struct timer_list cyz_rx_full_timer[NR_PORTS]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 870 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 872 | static inline bool cy_is_Z(struct cyclades_card *card) |
| 873 | { |
| 874 | return card->num_chips == (unsigned int)-1; |
| 875 | } |
| 876 | |
| 877 | static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr) |
| 878 | { |
| 879 | return readl(&ctl_addr->init_ctrl) & (1 << 17); |
| 880 | } |
| 881 | |
| 882 | static inline bool cyz_fpga_loaded(struct cyclades_card *card) |
| 883 | { |
| 884 | return __cyz_fpga_loaded(card->ctl_addr.p9060); |
| 885 | } |
| 886 | |
| 887 | static inline bool cyz_is_loaded(struct cyclades_card *card) |
| 888 | { |
| 889 | struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS; |
| 890 | |
| 891 | return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) && |
| 892 | readl(&fw_id->signature) == ZFIRM_ID; |
| 893 | } |
| 894 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 895 | static inline int serial_paranoia_check(struct cyclades_port *info, |
| 896 | char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | { |
| 898 | #ifdef SERIAL_PARANOIA_CHECK |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 899 | if (!info) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 900 | printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) " |
| 901 | "in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 902 | return 1; |
| 903 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 905 | if (info->magic != CYCLADES_MAGIC) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 906 | printk(KERN_WARNING "cyc Warning: bad magic number for serial " |
| 907 | "struct (%s) in %s\n", name, routine); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 908 | return 1; |
| 909 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 911 | return 0; |
| 912 | } /* serial_paranoia_check */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 913 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | /***********************************************************/ |
| 915 | /********* Start of block of Cyclom-Y specific code ********/ |
| 916 | |
| 917 | /* This routine waits up to 1000 micro-seconds for the previous |
| 918 | command to the Cirrus chip to complete and then issues the |
| 919 | new command. An error is returned if the previous command |
| 920 | didn't finish within the time limit. |
| 921 | |
| 922 | This function is only called from inside spinlock-protected code. |
| 923 | */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 924 | 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] | 925 | { |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 926 | unsigned int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 928 | /* Check to see that the previous command has completed */ |
| 929 | for (i = 0; i < 100; i++) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 930 | if (readb(base_addr + (CyCCR << index)) == 0) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 931 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 932 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 934 | /* if the CCR never cleared, the previous command |
| 935 | didn't finish within the "reasonable time" */ |
| 936 | if (i == 100) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 937 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 939 | /* Issue the new command */ |
| 940 | cy_writeb(base_addr + (CyCCR << index), cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 942 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 943 | } /* cyy_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | |
| 945 | #ifdef CONFIG_ISA |
| 946 | /* ISA interrupt detection code */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 947 | static unsigned detect_isa_irq(void __iomem *address) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 949 | int irq; |
| 950 | unsigned long irqs, flags; |
| 951 | int save_xir, save_car; |
| 952 | int index = 0; /* IRQ probing is only for ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 954 | /* forget possible initially masked and pending IRQ */ |
| 955 | irq = probe_irq_off(probe_irq_on()); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 957 | /* Clear interrupts on the board first */ |
| 958 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 959 | /* Cy_ClrIntr is 0x1800 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 961 | irqs = probe_irq_on(); |
| 962 | /* Wait ... */ |
| 963 | udelay(5000L); |
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 | /* Enable the Tx interrupts on the CD1400 */ |
| 966 | local_irq_save(flags); |
| 967 | cy_writeb(address + (CyCAR << index), 0); |
| 968 | cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 970 | cy_writeb(address + (CyCAR << index), 0); |
| 971 | cy_writeb(address + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 972 | readb(address + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 973 | local_irq_restore(flags); |
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 | /* Wait ... */ |
| 976 | udelay(5000L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 978 | /* Check which interrupt is in use */ |
| 979 | irq = probe_irq_off(irqs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 981 | /* Clean up */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 982 | save_xir = (u_char) readb(address + (CyTIR << index)); |
| 983 | save_car = readb(address + (CyCAR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 984 | cy_writeb(address + (CyCAR << index), (save_xir & 0x3)); |
| 985 | cy_writeb(address + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 986 | readb(address + (CySRER << index)) & ~CyTxRdy); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 987 | cy_writeb(address + (CyTIR << index), (save_xir & 0x3f)); |
| 988 | cy_writeb(address + (CyCAR << index), (save_car)); |
| 989 | cy_writeb(address + (Cy_ClrIntr << index), 0); |
| 990 | /* Cy_ClrIntr is 0x1800 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 992 | return (irq > 0) ? irq : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 994 | #endif /* CONFIG_ISA */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 996 | static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, |
| 997 | void __iomem *base_addr) |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 998 | { |
| 999 | struct cyclades_port *info; |
| 1000 | struct tty_struct *tty; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1001 | int len, index = cinfo->bus_index; |
| 1002 | u8 save_xir, channel, save_car, data, char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1003 | |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1004 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1005 | printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1006 | #endif |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1007 | /* determine the channel & change to that context */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1008 | save_xir = readb(base_addr + (CyRIR << index)); |
| 1009 | channel = save_xir & CyIRChannel; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1010 | info = &cinfo->ports[channel + chip * 4]; |
| 1011 | save_car = readb(base_addr + (CyCAR << index)); |
| 1012 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1013 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1014 | tty = tty_port_tty_get(&info->port); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1015 | /* if there is nowhere to put the data, discard it */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1016 | if (tty == NULL) { |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1017 | if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == |
| 1018 | CyIVRRxEx) { /* exception */ |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1019 | data = readb(base_addr + (CyRDSR << index)); |
| 1020 | } else { /* normal character reception */ |
| 1021 | char_count = readb(base_addr + (CyRDCR << index)); |
| 1022 | while (char_count--) |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1023 | data = readb(base_addr + (CyRDSR << index)); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1024 | } |
| 1025 | goto end; |
| 1026 | } |
| 1027 | /* there is an open port for this data */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1028 | if ((readb(base_addr + (CyRIVR << index)) & CyIVRMask) == |
| 1029 | CyIVRRxEx) { /* exception */ |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1030 | data = readb(base_addr + (CyRDSR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1031 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1032 | /* For statistics only */ |
| 1033 | if (data & CyBREAK) |
| 1034 | info->icount.brk++; |
| 1035 | else if (data & CyFRAME) |
| 1036 | info->icount.frame++; |
| 1037 | else if (data & CyPARITY) |
| 1038 | info->icount.parity++; |
| 1039 | else if (data & CyOVERRUN) |
| 1040 | info->icount.overrun++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1041 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1042 | if (data & info->ignore_status_mask) { |
| 1043 | info->icount.rx++; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1044 | tty_kref_put(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1045 | return; |
| 1046 | } |
| 1047 | if (tty_buffer_request_room(tty, 1)) { |
| 1048 | if (data & info->read_status_mask) { |
| 1049 | if (data & CyBREAK) { |
| 1050 | tty_insert_flip_char(tty, |
| 1051 | readb(base_addr + (CyRDSR << |
| 1052 | index)), TTY_BREAK); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1053 | info->icount.rx++; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1054 | if (info->port.flags & ASYNC_SAK) |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1055 | do_SAK(tty); |
| 1056 | } else if (data & CyFRAME) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1057 | tty_insert_flip_char(tty, |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1058 | readb(base_addr + (CyRDSR << |
| 1059 | index)), TTY_FRAME); |
| 1060 | info->icount.rx++; |
| 1061 | info->idle_stats.frame_errs++; |
| 1062 | } else if (data & CyPARITY) { |
| 1063 | /* Pieces of seven... */ |
| 1064 | tty_insert_flip_char(tty, |
| 1065 | readb(base_addr + (CyRDSR << |
| 1066 | index)), TTY_PARITY); |
| 1067 | info->icount.rx++; |
| 1068 | info->idle_stats.parity_errs++; |
| 1069 | } else if (data & CyOVERRUN) { |
| 1070 | tty_insert_flip_char(tty, 0, |
| 1071 | TTY_OVERRUN); |
| 1072 | info->icount.rx++; |
| 1073 | /* If the flip buffer itself is |
| 1074 | overflowing, we still lose |
| 1075 | the next incoming character. |
| 1076 | */ |
| 1077 | tty_insert_flip_char(tty, |
| 1078 | readb(base_addr + (CyRDSR << |
| 1079 | index)), TTY_FRAME); |
| 1080 | info->icount.rx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1081 | info->idle_stats.overruns++; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1082 | /* These two conditions may imply */ |
| 1083 | /* a normal read should be done. */ |
| 1084 | /* } else if(data & CyTIMEOUT) { */ |
| 1085 | /* } else if(data & CySPECHAR) { */ |
| 1086 | } else { |
| 1087 | tty_insert_flip_char(tty, 0, |
| 1088 | TTY_NORMAL); |
| 1089 | info->icount.rx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1090 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1091 | } else { |
| 1092 | tty_insert_flip_char(tty, 0, TTY_NORMAL); |
| 1093 | info->icount.rx++; |
| 1094 | } |
| 1095 | } else { |
| 1096 | /* there was a software buffer overrun and nothing |
| 1097 | * could be done about it!!! */ |
| 1098 | info->icount.buf_overrun++; |
| 1099 | info->idle_stats.overruns++; |
| 1100 | } |
| 1101 | } else { /* normal character reception */ |
| 1102 | /* load # chars available from the chip */ |
| 1103 | char_count = readb(base_addr + (CyRDCR << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1104 | |
| 1105 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1106 | ++info->mon.int_count; |
| 1107 | info->mon.char_count += char_count; |
| 1108 | if (char_count > info->mon.char_max) |
| 1109 | info->mon.char_max = char_count; |
| 1110 | info->mon.char_last = char_count; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1111 | #endif |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1112 | len = tty_buffer_request_room(tty, char_count); |
| 1113 | while (len--) { |
| 1114 | data = readb(base_addr + (CyRDSR << index)); |
| 1115 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
| 1116 | info->idle_stats.recv_bytes++; |
| 1117 | info->icount.rx++; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1118 | #ifdef CY_16Y_HACK |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1119 | udelay(10L); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1120 | #endif |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1121 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1122 | info->idle_stats.recv_idle = jiffies; |
| 1123 | } |
| 1124 | tty_schedule_flip(tty); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1125 | tty_kref_put(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1126 | end: |
| 1127 | /* end of service */ |
| 1128 | cy_writeb(base_addr + (CyRIR << index), save_xir & 0x3f); |
| 1129 | cy_writeb(base_addr + (CyCAR << index), save_car); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1130 | } |
| 1131 | |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1132 | static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip, |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1133 | void __iomem *base_addr) |
| 1134 | { |
| 1135 | struct cyclades_port *info; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1136 | struct tty_struct *tty; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1137 | int char_count, index = cinfo->bus_index; |
| 1138 | u8 save_xir, channel, save_car, outch; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1139 | |
| 1140 | /* Since we only get here when the transmit buffer |
| 1141 | is empty, we know we can always stuff a dozen |
| 1142 | characters. */ |
| 1143 | #ifdef CY_DEBUG_INTERRUPTS |
| 1144 | printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip); |
| 1145 | #endif |
| 1146 | |
| 1147 | /* determine the channel & change to that context */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1148 | save_xir = readb(base_addr + (CyTIR << index)); |
| 1149 | channel = save_xir & CyIRChannel; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1150 | save_car = readb(base_addr + (CyCAR << index)); |
| 1151 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
| 1152 | |
| 1153 | /* validate the port# (as configured and open) */ |
| 1154 | if (channel + chip * 4 >= cinfo->nports) { |
| 1155 | cy_writeb(base_addr + (CySRER << index), |
| 1156 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
| 1157 | goto end; |
| 1158 | } |
| 1159 | info = &cinfo->ports[channel + chip * 4]; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1160 | tty = tty_port_tty_get(&info->port); |
| 1161 | if (tty == NULL) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1162 | cy_writeb(base_addr + (CySRER << index), |
| 1163 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
| 1164 | goto end; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1165 | } |
| 1166 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1167 | /* load the on-chip space for outbound data */ |
| 1168 | char_count = info->xmit_fifo_size; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1169 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1170 | if (info->x_char) { /* send special char */ |
| 1171 | outch = info->x_char; |
| 1172 | cy_writeb(base_addr + (CyTDR << index), outch); |
| 1173 | char_count--; |
| 1174 | info->icount.tx++; |
| 1175 | info->x_char = 0; |
| 1176 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1177 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1178 | if (info->breakon || info->breakoff) { |
| 1179 | if (info->breakon) { |
| 1180 | cy_writeb(base_addr + (CyTDR << index), 0); |
| 1181 | cy_writeb(base_addr + (CyTDR << index), 0x81); |
| 1182 | info->breakon = 0; |
| 1183 | char_count -= 2; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1184 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1185 | if (info->breakoff) { |
| 1186 | cy_writeb(base_addr + (CyTDR << index), 0); |
| 1187 | cy_writeb(base_addr + (CyTDR << index), 0x83); |
| 1188 | info->breakoff = 0; |
| 1189 | char_count -= 2; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1190 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1191 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1192 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1193 | while (char_count-- > 0) { |
| 1194 | if (!info->xmit_cnt) { |
| 1195 | if (readb(base_addr + (CySRER << index)) & CyTxMpty) { |
| 1196 | cy_writeb(base_addr + (CySRER << index), |
| 1197 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1198 | ~CyTxMpty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1199 | } else { |
| 1200 | cy_writeb(base_addr + (CySRER << index), |
| 1201 | (readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1202 | ~CyTxRdy) | CyTxMpty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1203 | } |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1204 | goto done; |
| 1205 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1206 | if (info->port.xmit_buf == NULL) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1207 | cy_writeb(base_addr + (CySRER << index), |
| 1208 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1209 | ~CyTxRdy); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1210 | goto done; |
| 1211 | } |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1212 | if (tty->stopped || tty->hw_stopped) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1213 | cy_writeb(base_addr + (CySRER << index), |
| 1214 | readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1215 | ~CyTxRdy); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1216 | goto done; |
| 1217 | } |
| 1218 | /* Because the Embedded Transmit Commands have been enabled, |
| 1219 | * we must check to see if the escape character, NULL, is being |
| 1220 | * sent. If it is, we must ensure that there is room for it to |
| 1221 | * be doubled in the output stream. Therefore we no longer |
| 1222 | * advance the pointer when the character is fetched, but |
| 1223 | * rather wait until after the check for a NULL output |
| 1224 | * character. This is necessary because there may not be room |
| 1225 | * for the two chars needed to send a NULL.) |
| 1226 | */ |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1227 | outch = info->port.xmit_buf[info->xmit_tail]; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1228 | if (outch) { |
| 1229 | info->xmit_cnt--; |
| 1230 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1231 | (SERIAL_XMIT_SIZE - 1); |
| 1232 | cy_writeb(base_addr + (CyTDR << index), outch); |
| 1233 | info->icount.tx++; |
| 1234 | } else { |
| 1235 | if (char_count > 1) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1236 | info->xmit_cnt--; |
| 1237 | info->xmit_tail = (info->xmit_tail + 1) & |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1238 | (SERIAL_XMIT_SIZE - 1); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1239 | cy_writeb(base_addr + (CyTDR << index), outch); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1240 | cy_writeb(base_addr + (CyTDR << index), 0); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1241 | info->icount.tx++; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1242 | char_count--; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1243 | } |
| 1244 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1245 | } |
| 1246 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1247 | done: |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1248 | tty_wakeup(tty); |
| 1249 | tty_kref_put(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1250 | end: |
| 1251 | /* end of service */ |
| 1252 | cy_writeb(base_addr + (CyTIR << index), save_xir & 0x3f); |
| 1253 | cy_writeb(base_addr + (CyCAR << index), save_car); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1254 | } |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1255 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1256 | static void cyy_chip_modem(struct cyclades_card *cinfo, int chip, |
| 1257 | void __iomem *base_addr) |
| 1258 | { |
| 1259 | struct cyclades_port *info; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1260 | struct tty_struct *tty; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1261 | int index = cinfo->bus_index; |
| 1262 | u8 save_xir, channel, save_car, mdm_change, mdm_status; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1263 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1264 | /* determine the channel & change to that context */ |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1265 | save_xir = readb(base_addr + (CyMIR << index)); |
| 1266 | channel = save_xir & CyIRChannel; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1267 | info = &cinfo->ports[channel + chip * 4]; |
| 1268 | save_car = readb(base_addr + (CyCAR << index)); |
| 1269 | cy_writeb(base_addr + (CyCAR << index), save_xir); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1270 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1271 | mdm_change = readb(base_addr + (CyMISR << index)); |
| 1272 | mdm_status = readb(base_addr + (CyMSVR1 << index)); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1273 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1274 | tty = tty_port_tty_get(&info->port); |
| 1275 | if (!tty) |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1276 | goto end; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1277 | |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1278 | if (mdm_change & CyANY_DELTA) { |
| 1279 | /* For statistics only */ |
| 1280 | if (mdm_change & CyDCD) |
| 1281 | info->icount.dcd++; |
| 1282 | if (mdm_change & CyCTS) |
| 1283 | info->icount.cts++; |
| 1284 | if (mdm_change & CyDSR) |
| 1285 | info->icount.dsr++; |
| 1286 | if (mdm_change & CyRI) |
| 1287 | info->icount.rng++; |
| 1288 | |
| 1289 | wake_up_interruptible(&info->delta_msr_wait); |
| 1290 | } |
| 1291 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1292 | if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1293 | if (!(mdm_status & CyDCD)) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1294 | tty_hangup(tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1295 | info->port.flags &= ~ASYNC_NORMAL_ACTIVE; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1296 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1297 | wake_up_interruptible(&info->port.open_wait); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1298 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1299 | if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1300 | if (tty->hw_stopped) { |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1301 | if (mdm_status & CyCTS) { |
| 1302 | /* cy_start isn't used |
| 1303 | because... !!! */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1304 | tty->hw_stopped = 0; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1305 | cy_writeb(base_addr + (CySRER << index), |
| 1306 | readb(base_addr + (CySRER << index)) | |
| 1307 | CyTxRdy); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1308 | tty_wakeup(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1309 | } |
| 1310 | } else { |
| 1311 | if (!(mdm_status & CyCTS)) { |
| 1312 | /* cy_stop isn't used |
| 1313 | because ... !!! */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1314 | tty->hw_stopped = 1; |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1315 | cy_writeb(base_addr + (CySRER << index), |
| 1316 | readb(base_addr + (CySRER << index)) & |
| 1317 | ~CyTxRdy); |
| 1318 | } |
| 1319 | } |
| 1320 | } |
| 1321 | /* if (mdm_change & CyDSR) { |
| 1322 | } |
| 1323 | if (mdm_change & CyRI) { |
| 1324 | }*/ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1325 | tty_kref_put(tty); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1326 | end: |
| 1327 | /* end of service */ |
| 1328 | cy_writeb(base_addr + (CyMIR << index), save_xir & 0x3f); |
| 1329 | cy_writeb(base_addr + (CyCAR << index), save_car); |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1330 | } |
| 1331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | /* The real interrupt service routine is called |
| 1333 | whenever the card wants its hand held--chars |
| 1334 | received, out buffer empty, modem change, etc. |
| 1335 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1336 | static irqreturn_t cyy_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1338 | int status; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1339 | struct cyclades_card *cinfo = dev_id; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1340 | void __iomem *base_addr, *card_base_addr; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1341 | unsigned int chip, too_many, had_work; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1342 | int index; |
Jiri Slaby | e941027 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1343 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1344 | if (unlikely(cinfo == NULL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | #ifdef CY_DEBUG_INTERRUPTS |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1346 | printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n", |
| 1347 | irq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1349 | return IRQ_NONE; /* spurious interrupt */ |
| 1350 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1352 | card_base_addr = cinfo->base_addr; |
| 1353 | index = cinfo->bus_index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | |
Jiri Slaby | f1e83c6 | 2007-05-08 00:36:24 -0700 | [diff] [blame] | 1355 | /* card was not initialized yet (e.g. DEBUG_SHIRQ) */ |
| 1356 | if (unlikely(card_base_addr == NULL)) |
| 1357 | return IRQ_HANDLED; |
| 1358 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1359 | /* This loop checks all chips in the card. Make a note whenever |
| 1360 | _any_ chip had some work to do, as this is considered an |
| 1361 | indication that there will be more to do. Only when no chip |
| 1362 | has any work does this outermost loop exit. |
| 1363 | */ |
| 1364 | do { |
| 1365 | had_work = 0; |
| 1366 | for (chip = 0; chip < cinfo->num_chips; chip++) { |
| 1367 | base_addr = cinfo->base_addr + |
| 1368 | (cy_chip_offset[chip] << index); |
| 1369 | too_many = 0; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1370 | while ((status = readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1371 | (CySVRR << index))) != 0x00) { |
| 1372 | had_work++; |
| 1373 | /* The purpose of the following test is to ensure that |
| 1374 | no chip can monopolize the driver. This forces the |
| 1375 | chips to be checked in a round-robin fashion (after |
| 1376 | draining each of a bunch (1000) of characters). |
| 1377 | */ |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1378 | if (1000 < too_many++) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1379 | break; |
Jiri Slaby | 1c0a387 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1380 | spin_lock(&cinfo->card_lock); |
Jiri Slaby | ce97a09 | 2007-10-18 03:06:21 -0700 | [diff] [blame] | 1381 | if (status & CySRReceive) /* rx intr */ |
| 1382 | cyy_chip_rx(cinfo, chip, base_addr); |
| 1383 | if (status & CySRTransmit) /* tx intr */ |
| 1384 | cyy_chip_tx(cinfo, chip, base_addr); |
| 1385 | if (status & CySRModem) /* modem intr */ |
| 1386 | cyy_chip_modem(cinfo, chip, base_addr); |
Jiri Slaby | 1c0a387 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1387 | spin_unlock(&cinfo->card_lock); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1388 | } |
| 1389 | } |
| 1390 | } while (had_work); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1392 | /* clear interrupts */ |
| 1393 | spin_lock(&cinfo->card_lock); |
| 1394 | cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0); |
| 1395 | /* Cy_ClrIntr is 0x1800 */ |
| 1396 | spin_unlock(&cinfo->card_lock); |
| 1397 | return IRQ_HANDLED; |
| 1398 | } /* cyy_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | |
| 1400 | /***********************************************************/ |
| 1401 | /********* End of block of Cyclom-Y specific code **********/ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1402 | /******** Start of block of Cyclades-Z specific code *******/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | /***********************************************************/ |
| 1404 | |
| 1405 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1406 | cyz_fetch_msg(struct cyclades_card *cinfo, |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1407 | __u32 *channel, __u8 *cmd, __u32 *param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1409 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1410 | unsigned long loc_doorbell; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 1412 | loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1413 | if (loc_doorbell) { |
| 1414 | *cmd = (char)(0xff & loc_doorbell); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1415 | *channel = readl(&board_ctrl->fwcmd_channel); |
| 1416 | *param = (__u32) readl(&board_ctrl->fwcmd_param); |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 1417 | cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1418 | return 1; |
| 1419 | } |
| 1420 | return 0; |
| 1421 | } /* cyz_fetch_msg */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | |
| 1423 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1424 | cyz_issue_cmd(struct cyclades_card *cinfo, |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1425 | __u32 channel, __u8 cmd, __u32 param) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1427 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1428 | __u32 __iomem *pci_doorbell; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1429 | unsigned int index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1431 | if (!cyz_is_loaded(cinfo)) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1432 | return -1; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1433 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1434 | index = 0; |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 1435 | pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell; |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1436 | while ((readl(pci_doorbell) & 0xff) != 0) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1437 | if (index++ == 1000) |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1438 | return (int)(readl(pci_doorbell) & 0xff); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1439 | udelay(50L); |
| 1440 | } |
| 1441 | cy_writel(&board_ctrl->hcmd_channel, channel); |
| 1442 | cy_writel(&board_ctrl->hcmd_param, param); |
| 1443 | cy_writel(pci_doorbell, (long)cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 1445 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1446 | } /* cyz_issue_cmd */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1447 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1448 | static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1450 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1451 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1452 | unsigned int char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1453 | int len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | #ifdef BLOCKMOVE |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1455 | unsigned char *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1457 | char data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | #endif |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1459 | __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1461 | rx_get = new_rx_get = readl(&buf_ctrl->rx_get); |
| 1462 | rx_put = readl(&buf_ctrl->rx_put); |
| 1463 | rx_bufsize = readl(&buf_ctrl->rx_bufsize); |
| 1464 | rx_bufaddr = readl(&buf_ctrl->rx_bufaddr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1465 | if (rx_put >= rx_get) |
| 1466 | char_count = rx_put - rx_get; |
| 1467 | else |
| 1468 | char_count = rx_put - rx_get + rx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1470 | if (char_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | #ifdef CY_ENABLE_MONITORING |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1472 | info->mon.int_count++; |
| 1473 | info->mon.char_count += char_count; |
| 1474 | if (char_count > info->mon.char_max) |
| 1475 | info->mon.char_max = char_count; |
| 1476 | info->mon.char_last = char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | #endif |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1478 | if (tty == NULL) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1479 | /* flush received characters */ |
| 1480 | new_rx_get = (new_rx_get + char_count) & |
| 1481 | (rx_bufsize - 1); |
| 1482 | info->rflush_count++; |
| 1483 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1485 | /* we'd like to use memcpy(t, f, n) and memset(s, c, count) |
| 1486 | for performance, but because of buffer boundaries, there |
| 1487 | may be several steps to the operation */ |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1488 | while (1) { |
| 1489 | len = tty_prepare_flip_string(tty, &buf, |
| 1490 | char_count); |
| 1491 | if (!len) |
| 1492 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1494 | len = min_t(unsigned int, min(len, char_count), |
| 1495 | rx_bufsize - new_rx_get); |
| 1496 | |
| 1497 | memcpy_fromio(buf, cinfo->base_addr + |
| 1498 | rx_bufaddr + new_rx_get, len); |
| 1499 | |
| 1500 | new_rx_get = (new_rx_get + len) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1501 | (rx_bufsize - 1); |
Jiri Slaby | ce71b0f | 2007-05-08 00:36:53 -0700 | [diff] [blame] | 1502 | char_count -= len; |
| 1503 | info->icount.rx += len; |
| 1504 | info->idle_stats.recv_bytes += len; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1505 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | #else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1507 | len = tty_buffer_request_room(tty, char_count); |
| 1508 | while (len--) { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1509 | data = readb(cinfo->base_addr + rx_bufaddr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1510 | new_rx_get); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1511 | new_rx_get = (new_rx_get + 1) & |
| 1512 | (rx_bufsize - 1); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1513 | tty_insert_flip_char(tty, data, TTY_NORMAL); |
| 1514 | info->idle_stats.recv_bytes++; |
| 1515 | info->icount.rx++; |
| 1516 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1517 | #endif |
| 1518 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1519 | /* Recalculate the number of chars in the RX buffer and issue |
| 1520 | 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] | 1521 | rx_put = readl(&buf_ctrl->rx_put); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1522 | if (rx_put >= rx_get) |
| 1523 | char_count = rx_put - rx_get; |
| 1524 | else |
| 1525 | char_count = rx_put - rx_get + rx_bufsize; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1526 | if (char_count >= readl(&buf_ctrl->rx_threshold) && |
Jiri Slaby | ebafeef | 2007-10-18 03:06:20 -0700 | [diff] [blame] | 1527 | !timer_pending(&cyz_rx_full_timer[ |
| 1528 | info->line])) |
| 1529 | mod_timer(&cyz_rx_full_timer[info->line], |
| 1530 | jiffies + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1531 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1532 | info->idle_stats.recv_idle = jiffies; |
| 1533 | tty_schedule_flip(tty); |
| 1534 | } |
| 1535 | /* Update rx_get */ |
| 1536 | cy_writel(&buf_ctrl->rx_get, new_rx_get); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1537 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | } |
| 1539 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1540 | static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1542 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1543 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1544 | u8 data; |
| 1545 | unsigned int char_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | #ifdef BLOCKMOVE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1547 | int small_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | #endif |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 1549 | __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1551 | if (info->xmit_cnt <= 0) /* Nothing to transmit */ |
| 1552 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1554 | tx_get = readl(&buf_ctrl->tx_get); |
| 1555 | tx_put = readl(&buf_ctrl->tx_put); |
| 1556 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); |
| 1557 | tx_bufaddr = readl(&buf_ctrl->tx_bufaddr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1558 | if (tx_put >= tx_get) |
| 1559 | char_count = tx_get - tx_put - 1 + tx_bufsize; |
| 1560 | else |
| 1561 | char_count = tx_get - tx_put - 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1563 | if (char_count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1565 | if (tty == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1566 | goto ztxdone; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1567 | |
| 1568 | if (info->x_char) { /* send special char */ |
| 1569 | data = info->x_char; |
| 1570 | |
| 1571 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1572 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1573 | info->x_char = 0; |
| 1574 | char_count--; |
| 1575 | info->icount.tx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1576 | } |
| 1577 | #ifdef BLOCKMOVE |
| 1578 | while (0 < (small_count = min_t(unsigned int, |
| 1579 | tx_bufsize - tx_put, min_t(unsigned int, |
| 1580 | (SERIAL_XMIT_SIZE - info->xmit_tail), |
| 1581 | min_t(unsigned int, info->xmit_cnt, |
| 1582 | char_count))))) { |
| 1583 | |
| 1584 | memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + |
| 1585 | tx_put), |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1586 | &info->port.xmit_buf[info->xmit_tail], |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1587 | small_count); |
| 1588 | |
| 1589 | tx_put = (tx_put + small_count) & (tx_bufsize - 1); |
| 1590 | char_count -= small_count; |
| 1591 | info->icount.tx += small_count; |
| 1592 | info->xmit_cnt -= small_count; |
| 1593 | info->xmit_tail = (info->xmit_tail + small_count) & |
| 1594 | (SERIAL_XMIT_SIZE - 1); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1595 | } |
| 1596 | #else |
| 1597 | while (info->xmit_cnt && char_count) { |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1598 | data = info->port.xmit_buf[info->xmit_tail]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1599 | info->xmit_cnt--; |
| 1600 | info->xmit_tail = (info->xmit_tail + 1) & |
| 1601 | (SERIAL_XMIT_SIZE - 1); |
| 1602 | |
| 1603 | cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); |
| 1604 | tx_put = (tx_put + 1) & (tx_bufsize - 1); |
| 1605 | char_count--; |
| 1606 | info->icount.tx++; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1607 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1608 | #endif |
Jiri Slaby | ebafeef | 2007-10-18 03:06:20 -0700 | [diff] [blame] | 1609 | tty_wakeup(tty); |
Jiri Slaby | 7fa57a0 | 2007-10-22 20:45:13 -0700 | [diff] [blame] | 1610 | ztxdone: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1611 | /* Update tx_put */ |
| 1612 | cy_writel(&buf_ctrl->tx_put, tx_put); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1613 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1614 | } |
| 1615 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1616 | static void cyz_handle_cmd(struct cyclades_card *cinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1618 | struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1619 | struct tty_struct *tty; |
| 1620 | struct cyclades_port *info; |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 1621 | __u32 channel, param, fw_ver; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 1622 | __u8 cmd; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1623 | int special_count; |
| 1624 | int delta_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1626 | fw_ver = readl(&board_ctrl->fw_version); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1628 | while (cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { |
| 1629 | special_count = 0; |
| 1630 | delta_count = 0; |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 1631 | info = &cinfo->ports[channel]; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1632 | tty = tty_port_tty_get(&info->port); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 1633 | if (tty == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1634 | continue; |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1635 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1636 | switch (cmd) { |
| 1637 | case C_CM_PR_ERROR: |
| 1638 | tty_insert_flip_char(tty, 0, TTY_PARITY); |
| 1639 | info->icount.rx++; |
| 1640 | special_count++; |
| 1641 | break; |
| 1642 | case C_CM_FR_ERROR: |
| 1643 | tty_insert_flip_char(tty, 0, TTY_FRAME); |
| 1644 | info->icount.rx++; |
| 1645 | special_count++; |
| 1646 | break; |
| 1647 | case C_CM_RXBRK: |
| 1648 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
| 1649 | info->icount.rx++; |
| 1650 | special_count++; |
| 1651 | break; |
| 1652 | case C_CM_MDCD: |
| 1653 | info->icount.dcd++; |
| 1654 | delta_count++; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1655 | if (info->port.flags & ASYNC_CHECK_CD) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1656 | u32 dcd = fw_ver > 241 ? param : |
| 1657 | readl(&info->u.cyz.ch_ctrl->rs_status); |
| 1658 | if (dcd & C_RS_DCD) { |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1659 | wake_up_interruptible(&info->port.open_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1660 | } else { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1661 | tty_hangup(tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1662 | wake_up_interruptible(&info->port.open_wait); |
| 1663 | info->port.flags &= ~ASYNC_NORMAL_ACTIVE; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1664 | } |
| 1665 | } |
| 1666 | break; |
| 1667 | case C_CM_MCTS: |
| 1668 | info->icount.cts++; |
| 1669 | delta_count++; |
| 1670 | break; |
| 1671 | case C_CM_MRI: |
| 1672 | info->icount.rng++; |
| 1673 | delta_count++; |
| 1674 | break; |
| 1675 | case C_CM_MDSR: |
| 1676 | info->icount.dsr++; |
| 1677 | delta_count++; |
| 1678 | break; |
| 1679 | #ifdef Z_WAKE |
| 1680 | case C_CM_IOCTLW: |
Jiri Slaby | ebafeef | 2007-10-18 03:06:20 -0700 | [diff] [blame] | 1681 | complete(&info->shutdown_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1682 | break; |
| 1683 | #endif |
| 1684 | #ifdef CONFIG_CYZ_INTR |
| 1685 | case C_CM_RXHIWM: |
| 1686 | case C_CM_RXNNDT: |
| 1687 | case C_CM_INTBACK2: |
| 1688 | /* Reception Interrupt */ |
| 1689 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1690 | printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, " |
| 1691 | "port %ld\n", info->card, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1692 | #endif |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1693 | cyz_handle_rx(info, tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1694 | break; |
| 1695 | case C_CM_TXBEMPTY: |
| 1696 | case C_CM_TXLOWWM: |
| 1697 | case C_CM_INTBACK: |
| 1698 | /* Transmission Interrupt */ |
| 1699 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1700 | printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, " |
| 1701 | "port %ld\n", info->card, channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1702 | #endif |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1703 | cyz_handle_tx(info, tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1704 | break; |
| 1705 | #endif /* CONFIG_CYZ_INTR */ |
| 1706 | case C_CM_FATAL: |
| 1707 | /* should do something with this !!! */ |
| 1708 | break; |
| 1709 | default: |
| 1710 | break; |
| 1711 | } |
| 1712 | if (delta_count) |
Jiri Slaby | ebafeef | 2007-10-18 03:06:20 -0700 | [diff] [blame] | 1713 | wake_up_interruptible(&info->delta_msr_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1714 | if (special_count) |
| 1715 | tty_schedule_flip(tty); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1716 | tty_kref_put(tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1717 | } |
| 1718 | } |
| 1719 | |
| 1720 | #ifdef CONFIG_CYZ_INTR |
| 1721 | static irqreturn_t cyz_interrupt(int irq, void *dev_id) |
| 1722 | { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 1723 | struct cyclades_card *cinfo = dev_id; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1724 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1725 | if (unlikely(!cyz_is_loaded(cinfo))) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1726 | #ifdef CY_DEBUG_INTERRUPTS |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1727 | printk(KERN_DEBUG "cyz_interrupt: board not yet loaded " |
| 1728 | "(IRQ%d).\n", irq); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1729 | #endif |
| 1730 | return IRQ_NONE; |
| 1731 | } |
| 1732 | |
| 1733 | /* Handle the interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1734 | cyz_handle_cmd(cinfo); |
| 1735 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1736 | return IRQ_HANDLED; |
| 1737 | } /* cyz_interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1739 | static void cyz_rx_restart(unsigned long arg) |
| 1740 | { |
| 1741 | struct cyclades_port *info = (struct cyclades_port *)arg; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1742 | struct cyclades_card *card = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1743 | int retval; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1744 | __u32 channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1745 | unsigned long flags; |
| 1746 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1747 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1748 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1749 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1750 | 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] | 1751 | info->line, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1753 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1754 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1756 | #else /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1758 | static void cyz_poll(unsigned long arg) |
| 1759 | { |
| 1760 | struct cyclades_card *cinfo; |
| 1761 | struct cyclades_port *info; |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1762 | unsigned long expires = jiffies + HZ; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 1763 | unsigned int port, card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1764 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1765 | for (card = 0; card < NR_CARDS; card++) { |
| 1766 | cinfo = &cy_card[card]; |
| 1767 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1768 | if (!cy_is_Z(cinfo)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1769 | continue; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1770 | if (!cyz_is_loaded(cinfo)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1771 | continue; |
| 1772 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1773 | /* Skip first polling cycle to avoid racing conditions with the FW */ |
| 1774 | if (!cinfo->intr_enabled) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1775 | cinfo->intr_enabled = 1; |
| 1776 | continue; |
| 1777 | } |
| 1778 | |
| 1779 | cyz_handle_cmd(cinfo); |
| 1780 | |
| 1781 | for (port = 0; port < cinfo->nports; port++) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1782 | struct tty_struct *tty; |
| 1783 | |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 1784 | info = &cinfo->ports[port]; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1785 | tty = tty_port_tty_get(&info->port); |
| 1786 | /* OK to pass NULL to the handle functions below. |
| 1787 | They need to drop the data in that case. */ |
| 1788 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1789 | if (!info->throttle) |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1790 | cyz_handle_rx(info, tty); |
| 1791 | cyz_handle_tx(info, tty); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1792 | tty_kref_put(tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1793 | } |
| 1794 | /* poll every 'cyz_polling_cycle' period */ |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1795 | expires = jiffies + cyz_polling_cycle; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1796 | } |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 1797 | mod_timer(&cyz_timerlist, expires); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1798 | } /* cyz_poll */ |
| 1799 | |
| 1800 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | |
| 1802 | /********** End of block of Cyclades-Z specific code *********/ |
| 1803 | /***********************************************************/ |
| 1804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | /* This is called whenever a port becomes active; |
| 1806 | interrupts are enabled and DTR & RTS are turned on. |
| 1807 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1808 | static int cy_startup(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1809 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1810 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1811 | unsigned long flags; |
| 1812 | int retval = 0; |
| 1813 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1814 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1815 | unsigned long page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1817 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1818 | channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1819 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1820 | page = get_zeroed_page(GFP_KERNEL); |
| 1821 | if (!page) |
| 1822 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1823 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1824 | spin_lock_irqsave(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1826 | if (info->port.flags & ASYNC_INITIALIZED) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1827 | free_page(page); |
| 1828 | goto errout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1830 | |
| 1831 | if (!info->type) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1832 | set_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1833 | free_page(page); |
| 1834 | goto errout; |
| 1835 | } |
| 1836 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1837 | if (info->port.xmit_buf) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1838 | free_page(page); |
| 1839 | else |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1840 | info->port.xmit_buf = (unsigned char *)page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1842 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1843 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1844 | cy_set_line_char(info, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1846 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1847 | chip = channel >> 2; |
| 1848 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1849 | index = card->bus_index; |
| 1850 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | |
| 1852 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1853 | printk(KERN_DEBUG "cyc startup card %d, chip %d, channel %d, " |
| 1854 | "base_addr %p\n", |
| 1855 | card, chip, channel, base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1856 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1857 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1858 | |
| 1859 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 1860 | |
| 1861 | cy_writeb(base_addr + (CyRTPR << index), |
| 1862 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 1863 | /* 10ms rx timeout */ |
| 1864 | |
| 1865 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR, |
| 1866 | index); |
| 1867 | |
| 1868 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 1869 | cy_writeb(base_addr + (CyMSVR1 << index), CyRTS); |
| 1870 | cy_writeb(base_addr + (CyMSVR2 << index), CyDTR); |
| 1871 | |
| 1872 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1873 | printk(KERN_DEBUG "cyc:startup raising DTR\n"); |
| 1874 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1875 | readb(base_addr + (CyMSVR1 << index)), |
| 1876 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | #endif |
| 1878 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1879 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1880 | readb(base_addr + (CySRER << index)) | CyRxData); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1881 | info->port.flags |= ASYNC_INITIALIZED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1882 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1883 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1884 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1885 | info->breakon = info->breakoff = 0; |
| 1886 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 1887 | info->idle_stats.in_use = |
| 1888 | info->idle_stats.recv_idle = |
| 1889 | info->idle_stats.xmit_idle = jiffies; |
| 1890 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1891 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1892 | |
| 1893 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1894 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1895 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1896 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1897 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1898 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1899 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1900 | printk(KERN_DEBUG "cyc startup Z card %d, channel %d, " |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1901 | "base_addr %p\n", card, channel, card->base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1902 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1903 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1904 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1905 | cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1906 | #ifdef Z_WAKE |
| 1907 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1908 | cy_writel(&ch_ctrl->intr_enable, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1909 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 1910 | C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1911 | #else |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1912 | cy_writel(&ch_ctrl->intr_enable, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1913 | C_IN_IOCTLW | C_IN_MDCD); |
| 1914 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1915 | #else |
| 1916 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1917 | cy_writel(&ch_ctrl->intr_enable, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1918 | C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM | |
| 1919 | C_IN_RXNNDT | C_IN_MDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | #else |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1921 | cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1922 | #endif /* CONFIG_CYZ_INTR */ |
| 1923 | #endif /* Z_WAKE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1925 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1926 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1927 | printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was " |
| 1928 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1929 | } |
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 | /* Flush RX buffers before raising DTR and RTS */ |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1932 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1933 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1934 | printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was " |
| 1935 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1936 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1938 | /* set timeout !!! */ |
| 1939 | /* set RTS and DTR !!! */ |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 1940 | cy_writel(&ch_ctrl->rs_control, readl(&ch_ctrl->rs_control) | |
| 1941 | C_RS_RTS | C_RS_DTR); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1942 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1943 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1944 | printk(KERN_ERR "cyc:startup(3) retval on ttyC%d was " |
| 1945 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1946 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1948 | printk(KERN_DEBUG "cyc:startup raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | #endif |
| 1950 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1951 | /* enable send, recv, modem !!! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 1953 | info->port.flags |= ASYNC_INITIALIZED; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 1954 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1955 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 1956 | info->breakon = info->breakoff = 0; |
| 1957 | memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); |
| 1958 | info->idle_stats.in_use = |
| 1959 | info->idle_stats.recv_idle = |
| 1960 | info->idle_stats.xmit_idle = jiffies; |
| 1961 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1962 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | |
| 1965 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 1966 | printk(KERN_DEBUG "cyc startup done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | #endif |
| 1968 | return 0; |
| 1969 | |
| 1970 | errout: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1971 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1973 | } /* startup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1975 | static void start_xmit(struct cyclades_port *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1977 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1978 | unsigned long flags; |
| 1979 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1980 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1982 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1983 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 1984 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1985 | chip = channel >> 2; |
| 1986 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 1987 | index = card->bus_index; |
| 1988 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1990 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1991 | cy_writeb(base_addr + (CyCAR << index), channel); |
| 1992 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 1993 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1994 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1995 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 1997 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1998 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 1999 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2000 | retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2001 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2002 | printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was " |
| 2003 | "%x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2004 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2005 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2006 | #else /* CONFIG_CYZ_INTR */ |
| 2007 | /* Don't have to do anything at this time */ |
| 2008 | #endif /* CONFIG_CYZ_INTR */ |
| 2009 | } |
| 2010 | } /* start_xmit */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2011 | |
| 2012 | /* |
| 2013 | * This routine shuts down a serial port; interrupts are disabled, |
| 2014 | * and DTR is dropped if the hangup on close termio flag is on. |
| 2015 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2016 | static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2017 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2018 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2019 | unsigned long flags; |
| 2020 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2021 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2022 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2023 | if (!(info->port.flags & ASYNC_INITIALIZED)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2024 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2026 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2027 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2028 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2029 | chip = channel >> 2; |
| 2030 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2031 | index = card->bus_index; |
| 2032 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2033 | |
| 2034 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2035 | printk(KERN_DEBUG "cyc shutdown Y card %d, chip %d, " |
| 2036 | "channel %d, base_addr %p\n", |
| 2037 | card, chip, channel, base_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2040 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2041 | |
| 2042 | /* Clear delta_msr_wait queue to avoid mem leaks. */ |
| 2043 | wake_up_interruptible(&info->delta_msr_wait); |
| 2044 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2045 | if (info->port.xmit_buf) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2046 | unsigned char *temp; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2047 | temp = info->port.xmit_buf; |
| 2048 | info->port.xmit_buf = NULL; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2049 | free_page((unsigned long)temp); |
| 2050 | } |
| 2051 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2052 | if (tty->termios->c_cflag & HUPCL) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2053 | cy_writeb(base_addr + (CyMSVR1 << index), ~CyRTS); |
| 2054 | cy_writeb(base_addr + (CyMSVR2 << index), ~CyDTR); |
| 2055 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2056 | printk(KERN_DEBUG "cyc shutdown dropping DTR\n"); |
| 2057 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2058 | readb(base_addr + (CyMSVR1 << index)), |
| 2059 | readb(base_addr + (CyMSVR2 << index))); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2060 | #endif |
| 2061 | } |
| 2062 | cyy_issue_cmd(base_addr, CyCHAN_CTL | CyDIS_RCVR, index); |
| 2063 | /* it may be appropriate to clear _XMIT at |
| 2064 | some later date (after testing)!!! */ |
| 2065 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2066 | set_bit(TTY_IO_ERROR, &tty->flags); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2067 | info->port.flags &= ~ASYNC_INITIALIZED; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2068 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2069 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2070 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2071 | int retval; |
| 2072 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2073 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2074 | printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, " |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2075 | "base_addr %p\n", card, channel, card->base_addr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2076 | #endif |
| 2077 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2078 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2079 | return; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2080 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2081 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2082 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2083 | if (info->port.xmit_buf) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2084 | unsigned char *temp; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2085 | temp = info->port.xmit_buf; |
| 2086 | info->port.xmit_buf = NULL; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2087 | free_page((unsigned long)temp); |
| 2088 | } |
| 2089 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2090 | if (tty->termios->c_cflag & HUPCL) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2091 | cy_writel(&ch_ctrl->rs_control, |
| 2092 | readl(&ch_ctrl->rs_control) & |
| 2093 | ~(C_RS_RTS | C_RS_DTR)); |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2094 | retval = cyz_issue_cmd(info->card, channel, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2095 | C_CM_IOCTLM, 0L); |
| 2096 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2097 | printk(KERN_ERR"cyc:shutdown retval on ttyC%d " |
| 2098 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2099 | } |
| 2100 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2101 | printk(KERN_DEBUG "cyc:shutdown dropping Z DTR\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2102 | #endif |
| 2103 | } |
| 2104 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2105 | set_bit(TTY_IO_ERROR, &tty->flags); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2106 | info->port.flags &= ~ASYNC_INITIALIZED; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2107 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2108 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2109 | } |
| 2110 | |
| 2111 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2112 | printk(KERN_DEBUG "cyc shutdown done\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2113 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2114 | } /* shutdown */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | |
| 2116 | /* |
| 2117 | * ------------------------------------------------------------ |
| 2118 | * cy_open() and friends |
| 2119 | * ------------------------------------------------------------ |
| 2120 | */ |
| 2121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | /* |
| 2123 | * This routine is called whenever a serial port is opened. It |
| 2124 | * performs the serial-specific initialization for the tty structure. |
| 2125 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2126 | static int cy_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2128 | struct cyclades_port *info; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 2129 | unsigned int i, line; |
| 2130 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2131 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2132 | line = tty->index; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2133 | if (tty->index < 0 || NR_PORTS <= line) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2134 | return -ENODEV; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2135 | |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 2136 | for (i = 0; i < NR_CARDS; i++) |
| 2137 | if (line < cy_card[i].first_line + cy_card[i].nports && |
| 2138 | line >= cy_card[i].first_line) |
| 2139 | break; |
| 2140 | if (i >= NR_CARDS) |
| 2141 | return -ENODEV; |
| 2142 | info = &cy_card[i].ports[line - cy_card[i].first_line]; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2143 | if (info->line < 0) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2144 | return -ENODEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2145 | |
| 2146 | /* If the card's firmware hasn't been loaded, |
| 2147 | treat it as absent from the system. This |
| 2148 | will make the user pay attention. |
| 2149 | */ |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2150 | if (cy_is_Z(info->card)) { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2151 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2152 | struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; |
| 2153 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2154 | if (!cyz_is_loaded(cinfo)) { |
| 2155 | if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) && |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 2156 | readl(&firm_id->signature) == |
| 2157 | ZFIRM_HLT) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2158 | printk(KERN_ERR "cyc:Cyclades-Z Error: you " |
| 2159 | "need an external power supply for " |
| 2160 | "this number of ports.\nFirmware " |
| 2161 | "halted.\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2162 | } else { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2163 | printk(KERN_ERR "cyc:Cyclades-Z firmware not " |
| 2164 | "yet loaded\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2165 | } |
| 2166 | return -ENODEV; |
| 2167 | } |
| 2168 | #ifdef CONFIG_CYZ_INTR |
| 2169 | else { |
| 2170 | /* In case this Z board is operating in interrupt mode, its |
| 2171 | interrupts should be enabled as soon as the first open |
| 2172 | happens to one of its ports. */ |
| 2173 | if (!cinfo->intr_enabled) { |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 2174 | u16 intr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2175 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2176 | /* Enable interrupts on the PLX chip */ |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 2177 | intr = readw(&cinfo->ctl_addr.p9060-> |
| 2178 | intr_ctrl_stat) | 0x0900; |
| 2179 | cy_writew(&cinfo->ctl_addr.p9060-> |
| 2180 | intr_ctrl_stat, intr); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2181 | /* Enable interrupts on the FW */ |
| 2182 | retval = cyz_issue_cmd(cinfo, 0, |
| 2183 | C_CM_IRQ_ENBL, 0L); |
| 2184 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2185 | printk(KERN_ERR "cyc:IRQ enable retval " |
| 2186 | "was %x\n", retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2187 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2188 | cinfo->intr_enabled = 1; |
| 2189 | } |
| 2190 | } |
| 2191 | #endif /* CONFIG_CYZ_INTR */ |
| 2192 | /* Make sure this Z port really exists in hardware */ |
| 2193 | if (info->line > (cinfo->first_line + cinfo->nports - 1)) |
| 2194 | return -ENODEV; |
| 2195 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2196 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2197 | printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2199 | tty->driver_data = info; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2200 | if (serial_paranoia_check(info, tty->name, "cy_open")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2201 | return -ENODEV; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2203 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2204 | printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line, |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2205 | info->port.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | #endif |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2207 | info->port.count++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2208 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2209 | printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n", |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2210 | current->pid, info->port.count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2212 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2213 | /* |
| 2214 | * If the port is the middle of closing, bail out now |
| 2215 | */ |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2216 | if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) { |
| 2217 | wait_event_interruptible(info->port.close_wait, |
| 2218 | !(info->port.flags & ASYNC_CLOSING)); |
| 2219 | return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2220 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2222 | /* |
| 2223 | * Start up serial port |
| 2224 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2225 | retval = cy_startup(info, tty); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2226 | if (retval) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2227 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2228 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2229 | retval = tty_port_block_til_ready(&info->port, tty, filp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2230 | if (retval) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2231 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2232 | printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready " |
| 2233 | "with %d\n", retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2234 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2235 | return retval; |
| 2236 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2238 | info->throttle = 0; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2239 | tty_port_tty_set(&info->port, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | |
| 2241 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2242 | printk(KERN_DEBUG "cyc:cy_open done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2243 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2244 | return 0; |
| 2245 | } /* cy_open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2246 | |
| 2247 | /* |
| 2248 | * cy_wait_until_sent() --- wait until the transmitter is empty |
| 2249 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2250 | static void cy_wait_until_sent(struct tty_struct *tty, int timeout) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2252 | struct cyclades_card *card; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2253 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2254 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2255 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2256 | unsigned long orig_jiffies; |
| 2257 | int char_time; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2258 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2259 | if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) |
| 2260 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2262 | if (info->xmit_fifo_size == 0) |
| 2263 | return; /* Just in case.... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2265 | orig_jiffies = jiffies; |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2266 | lock_kernel(); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2267 | /* |
| 2268 | * Set the check interval to be 1/5 of the estimated time to |
| 2269 | * send a single character, and make it at least 1. The check |
| 2270 | * interval should also be less than the timeout. |
| 2271 | * |
| 2272 | * Note: we have to use pretty tight timings here to satisfy |
| 2273 | * the NIST-PCTS. |
| 2274 | */ |
| 2275 | char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size; |
| 2276 | char_time = char_time / 5; |
| 2277 | if (char_time <= 0) |
| 2278 | char_time = 1; |
| 2279 | if (timeout < 0) |
| 2280 | timeout = 0; |
| 2281 | if (timeout) |
| 2282 | char_time = min(char_time, timeout); |
| 2283 | /* |
| 2284 | * If the transmitter hasn't cleared in twice the approximate |
| 2285 | * amount of time to send the entire FIFO, it probably won't |
| 2286 | * ever clear. This assumes the UART isn't doing flow |
| 2287 | * control, which is currently the case. Hence, if it ever |
| 2288 | * takes longer than info->timeout, this is probably due to a |
| 2289 | * UART bug of some kind. So, we clamp the timeout parameter at |
| 2290 | * 2*info->timeout. |
| 2291 | */ |
| 2292 | if (!timeout || timeout > 2 * info->timeout) |
| 2293 | timeout = 2 * info->timeout; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2295 | printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...", |
| 2296 | timeout, char_time, jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2298 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2299 | channel = (info->line) - (card->first_line); |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2300 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2301 | chip = channel >> 2; |
| 2302 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2303 | index = card->bus_index; |
| 2304 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2305 | while (readb(base_addr + (CySRER << index)) & CyTxRdy) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2307 | printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2308 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2309 | if (msleep_interruptible(jiffies_to_msecs(char_time))) |
| 2310 | break; |
| 2311 | if (timeout && time_after(jiffies, orig_jiffies + |
| 2312 | timeout)) |
| 2313 | break; |
| 2314 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2315 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2316 | /* Run one more char cycle */ |
| 2317 | msleep_interruptible(jiffies_to_msecs(char_time * 5)); |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2318 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | #ifdef CY_DEBUG_WAIT_UNTIL_SENT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2320 | printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | #endif |
| 2322 | } |
| 2323 | |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2324 | static void cy_flush_buffer(struct tty_struct *tty) |
| 2325 | { |
| 2326 | struct cyclades_port *info = tty->driver_data; |
| 2327 | struct cyclades_card *card; |
| 2328 | int channel, retval; |
| 2329 | unsigned long flags; |
| 2330 | |
| 2331 | #ifdef CY_DEBUG_IO |
| 2332 | printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line); |
| 2333 | #endif |
| 2334 | |
| 2335 | if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) |
| 2336 | return; |
| 2337 | |
| 2338 | card = info->card; |
| 2339 | channel = info->line - card->first_line; |
| 2340 | |
| 2341 | spin_lock_irqsave(&card->card_lock, flags); |
| 2342 | info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; |
| 2343 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 2344 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2345 | if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2346 | buffers as well */ |
| 2347 | spin_lock_irqsave(&card->card_lock, flags); |
| 2348 | retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L); |
| 2349 | if (retval != 0) { |
| 2350 | printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d " |
| 2351 | "was %x\n", info->line, retval); |
| 2352 | } |
| 2353 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 2354 | } |
| 2355 | tty_wakeup(tty); |
| 2356 | } /* cy_flush_buffer */ |
| 2357 | |
| 2358 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | /* |
| 2360 | * This routine is called when a particular tty device is closed. |
| 2361 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2362 | static void cy_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2364 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2365 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2366 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2367 | |
| 2368 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2369 | printk(KERN_DEBUG "cyc:cy_close ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | #endif |
| 2371 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2372 | if (!info || serial_paranoia_check(info, tty->name, "cy_close")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2373 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2374 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2375 | card = info->card; |
| 2376 | |
| 2377 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2378 | /* If the TTY is being hung up, nothing to do */ |
| 2379 | if (tty_hung_up_p(filp)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2380 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2381 | return; |
| 2382 | } |
| 2383 | #ifdef CY_DEBUG_OPEN |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2384 | printk(KERN_DEBUG "cyc:cy_close ttyC%d, count = %d\n", info->line, |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2385 | info->port.count); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2386 | #endif |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2387 | if ((tty->count == 1) && (info->port.count != 1)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2388 | /* |
| 2389 | * Uh, oh. tty->count is 1, which means that the tty |
| 2390 | * structure will be freed. Info->count should always |
| 2391 | * be one in these conditions. If it's greater than |
| 2392 | * one, we've got real problems, since it means the |
| 2393 | * serial port won't be shutdown. |
| 2394 | */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2395 | printk(KERN_ERR "cyc:cy_close: bad serial port count; " |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2396 | "tty->count is 1, info->port.count is %d\n", info->port.count); |
| 2397 | info->port.count = 1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2398 | } |
| 2399 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2400 | printk(KERN_DEBUG "cyc:cy_close at (%d): decrementing count to %d\n", |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2401 | current->pid, info->port.count - 1); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2402 | #endif |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2403 | if (--info->port.count < 0) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2404 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2405 | printk(KERN_DEBUG "cyc:cyc_close setting count to 0\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2406 | #endif |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2407 | info->port.count = 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2408 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2409 | if (info->port.count) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2410 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2411 | return; |
| 2412 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2413 | info->port.flags |= ASYNC_CLOSING; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2414 | |
| 2415 | /* |
| 2416 | * Now we wait for the transmit buffer to clear; and we notify |
| 2417 | * the line discipline to only process XON/XOFF characters. |
| 2418 | */ |
| 2419 | tty->closing = 1; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2420 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2421 | if (info->port.closing_wait != CY_CLOSING_WAIT_NONE) |
| 2422 | tty_wait_until_sent(tty, info->port.closing_wait); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2423 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2424 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2425 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2426 | if (!cy_is_Z(card)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2427 | int channel = info->line - card->first_line; |
| 2428 | int index = card->bus_index; |
| 2429 | void __iomem *base_addr = card->base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2430 | (cy_chip_offset[channel >> 2] << index); |
| 2431 | /* Stop accepting input */ |
| 2432 | channel &= 0x03; |
| 2433 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
| 2434 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2435 | readb(base_addr + (CySRER << index)) & ~CyRxData); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2436 | if (info->port.flags & ASYNC_INITIALIZED) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2437 | /* Waiting for on-board buffers to be empty before |
| 2438 | closing the port */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2439 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2440 | cy_wait_until_sent(tty, info->timeout); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2441 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2442 | } |
| 2443 | } else { |
| 2444 | #ifdef Z_WAKE |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2445 | /* Waiting for on-board buffers to be empty before closing |
| 2446 | the port */ |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2447 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2448 | int channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2449 | int retval; |
| 2450 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2451 | if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2452 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2453 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2454 | printk(KERN_DEBUG "cyc:cy_close retval on " |
| 2455 | "ttyC%d was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2456 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2457 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 2458 | wait_for_completion_interruptible(&info->shutdown_wait); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2459 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2460 | } |
| 2461 | #endif |
| 2462 | } |
| 2463 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2464 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2465 | cy_shutdown(info, tty); |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2466 | cy_flush_buffer(tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2467 | tty_ldisc_flush(tty); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2468 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2469 | |
| 2470 | tty->closing = 0; |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2471 | tty_port_tty_set(&info->port, NULL); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2472 | if (info->port.blocked_open) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2473 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2474 | if (info->port.close_delay) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2475 | msleep_interruptible(jiffies_to_msecs |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 2476 | (info->port.close_delay)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2477 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2478 | wake_up_interruptible(&info->port.open_wait); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2479 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2480 | } |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2481 | info->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
| 2482 | wake_up_interruptible(&info->port.close_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2483 | |
| 2484 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2485 | printk(KERN_DEBUG "cyc:cy_close done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2486 | #endif |
| 2487 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2488 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2489 | } /* cy_close */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2490 | |
| 2491 | /* This routine gets called when tty_write has put something into |
| 2492 | * the write_queue. The characters may come from user space or |
| 2493 | * kernel space. |
| 2494 | * |
| 2495 | * This routine will return the number of characters actually |
| 2496 | * accepted for writing. |
| 2497 | * |
| 2498 | * If the port is not already transmitting stuff, start it off by |
| 2499 | * enabling interrupts. The interrupt service routine will then |
| 2500 | * ensure that the characters are sent. |
| 2501 | * If the port is already active, there is no need to kick it. |
| 2502 | * |
| 2503 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2504 | 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] | 2505 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2506 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2507 | unsigned long flags; |
| 2508 | int c, ret = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2509 | |
| 2510 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2511 | printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | #endif |
| 2513 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2514 | if (serial_paranoia_check(info, tty->name, "cy_write")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2515 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2516 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2517 | if (!info->port.xmit_buf) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2518 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2519 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2520 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2521 | while (1) { |
Harvey Harrison | 1a4e235 | 2008-04-30 00:53:52 -0700 | [diff] [blame] | 2522 | c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1)); |
| 2523 | c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2524 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2525 | if (c <= 0) |
| 2526 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2527 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2528 | memcpy(info->port.xmit_buf + info->xmit_head, buf, c); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2529 | info->xmit_head = (info->xmit_head + c) & |
| 2530 | (SERIAL_XMIT_SIZE - 1); |
| 2531 | info->xmit_cnt += c; |
| 2532 | buf += c; |
| 2533 | count -= c; |
| 2534 | ret += c; |
| 2535 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2536 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2537 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2538 | info->idle_stats.xmit_bytes += ret; |
| 2539 | info->idle_stats.xmit_idle = jiffies; |
| 2540 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2541 | if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2542 | start_xmit(info); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2543 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2544 | return ret; |
| 2545 | } /* cy_write */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | |
| 2547 | /* |
| 2548 | * This routine is called by the kernel to write a single |
| 2549 | * character to the tty device. If the kernel uses this routine, |
| 2550 | * it must call the flush_chars() routine (if defined) when it is |
| 2551 | * done stuffing characters into the driver. If there is no room |
| 2552 | * in the queue, the character is ignored. |
| 2553 | */ |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 2554 | static int cy_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2556 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2557 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | |
| 2559 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2560 | printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | #endif |
| 2562 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2563 | if (serial_paranoia_check(info, tty->name, "cy_put_char")) |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 2564 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2565 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2566 | if (!info->port.xmit_buf) |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 2567 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2569 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 90cc301 | 2006-12-08 02:39:31 -0800 | [diff] [blame] | 2570 | if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2571 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 2572 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2573 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2574 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2575 | info->port.xmit_buf[info->xmit_head++] = ch; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2576 | info->xmit_head &= SERIAL_XMIT_SIZE - 1; |
| 2577 | info->xmit_cnt++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2578 | info->idle_stats.xmit_bytes++; |
| 2579 | info->idle_stats.xmit_idle = jiffies; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2580 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Alan Cox | 76b25a5 | 2008-04-30 00:54:03 -0700 | [diff] [blame] | 2581 | return 1; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2582 | } /* cy_put_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2583 | |
| 2584 | /* |
| 2585 | * This routine is called by the kernel after it has written a |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2586 | * series of characters to the tty device using put_char(). |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2587 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2588 | static void cy_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2589 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2590 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2592 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2593 | printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2594 | #endif |
| 2595 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2596 | if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) |
| 2597 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2598 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2599 | if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2600 | !info->port.xmit_buf) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2601 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2603 | start_xmit(info); |
| 2604 | } /* cy_flush_chars */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2605 | |
| 2606 | /* |
| 2607 | * This routine returns the numbers of characters the tty driver |
| 2608 | * will accept for queuing to be written. This number is subject |
| 2609 | * to change as output buffers get emptied, or if the output flow |
| 2610 | * control is activated. |
| 2611 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2612 | static int cy_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2613 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2614 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2615 | int ret; |
| 2616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2618 | printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2619 | #endif |
| 2620 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2621 | if (serial_paranoia_check(info, tty->name, "cy_write_room")) |
| 2622 | return 0; |
| 2623 | ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; |
| 2624 | if (ret < 0) |
| 2625 | ret = 0; |
| 2626 | return ret; |
| 2627 | } /* cy_write_room */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2629 | static int cy_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2630 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 2631 | struct cyclades_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2633 | if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) |
| 2634 | return 0; |
| 2635 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2636 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2637 | if (!cy_is_Z(info->card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2638 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2639 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2640 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
| 2641 | info->line, info->xmit_cnt); |
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 | return info->xmit_cnt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | #ifdef Z_EXT_CHARS_IN_BUFFER |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2645 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2646 | struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2647 | int char_count; |
Jiri Slaby | ad39c30 | 2007-05-08 00:35:49 -0700 | [diff] [blame] | 2648 | __u32 tx_put, tx_get, tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2649 | |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2650 | lock_kernel(); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2651 | tx_get = readl(&buf_ctrl->tx_get); |
| 2652 | tx_put = readl(&buf_ctrl->tx_put); |
| 2653 | tx_bufsize = readl(&buf_ctrl->tx_bufsize); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2654 | if (tx_put >= tx_get) |
| 2655 | char_count = tx_put - tx_get; |
| 2656 | else |
| 2657 | char_count = tx_put - tx_get + tx_bufsize; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2658 | #ifdef CY_DEBUG_IO |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2659 | printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n", |
| 2660 | info->line, info->xmit_cnt + char_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2661 | #endif |
Alan Cox | 978e595 | 2008-04-30 00:53:59 -0700 | [diff] [blame] | 2662 | unlock_kernel(); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 2663 | return info->xmit_cnt + char_count; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2664 | } |
| 2665 | #endif /* Z_EXT_CHARS_IN_BUFFER */ |
| 2666 | } /* cy_chars_in_buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2667 | |
| 2668 | /* |
| 2669 | * ------------------------------------------------------------ |
| 2670 | * cy_ioctl() and friends |
| 2671 | * ------------------------------------------------------------ |
| 2672 | */ |
| 2673 | |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 2674 | static void cyy_baud_calc(struct cyclades_port *info, __u32 baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2675 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2676 | int co, co_val, bpr; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 2677 | __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2678 | 25000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2680 | if (baud == 0) { |
| 2681 | info->tbpr = info->tco = info->rbpr = info->rco = 0; |
| 2682 | return; |
| 2683 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2684 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2685 | /* determine which prescaler to use */ |
| 2686 | for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { |
| 2687 | if (cy_clock / co_val / baud > 63) |
| 2688 | break; |
| 2689 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2691 | bpr = (cy_clock / co_val * 2 / baud + 1) / 2; |
| 2692 | if (bpr > 255) |
| 2693 | bpr = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2694 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2695 | info->tbpr = info->rbpr = bpr; |
| 2696 | info->tco = info->rco = co; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2697 | } |
| 2698 | |
| 2699 | /* |
| 2700 | * This routine finds or computes the various line characteristics. |
| 2701 | * It used to be called config_setup |
| 2702 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2703 | static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2705 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2706 | unsigned long flags; |
| 2707 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2708 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2709 | unsigned cflag, iflag; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2710 | int baud, baud_rate = 0; |
| 2711 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2712 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2713 | if (!tty->termios) /* XXX can this happen at all? */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2714 | return; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2715 | |
| 2716 | if (info->line == -1) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2717 | return; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2718 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2719 | cflag = tty->termios->c_cflag; |
| 2720 | iflag = tty->termios->c_iflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2722 | /* |
| 2723 | * Set up the tty->alt_speed kludge |
| 2724 | */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2725 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
| 2726 | tty->alt_speed = 57600; |
| 2727 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
| 2728 | tty->alt_speed = 115200; |
| 2729 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) |
| 2730 | tty->alt_speed = 230400; |
| 2731 | if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) |
| 2732 | tty->alt_speed = 460800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2734 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2735 | channel = info->line - card->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2736 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2737 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2738 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2739 | index = card->bus_index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2740 | |
| 2741 | /* baud rate */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2742 | baud = tty_get_baud_rate(tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2743 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2744 | ASYNC_SPD_CUST) { |
| 2745 | if (info->custom_divisor) |
| 2746 | baud_rate = info->baud / info->custom_divisor; |
| 2747 | else |
| 2748 | baud_rate = info->baud; |
| 2749 | } else if (baud > CD1400_MAX_SPEED) { |
| 2750 | baud = CD1400_MAX_SPEED; |
| 2751 | } |
| 2752 | /* find the baud index */ |
| 2753 | for (i = 0; i < 20; i++) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2754 | if (baud == baud_table[i]) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2755 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2756 | } |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2757 | if (i == 20) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2758 | i = 19; /* CD1400_MAX_SPEED */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2759 | |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2760 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2761 | ASYNC_SPD_CUST) { |
| 2762 | cyy_baud_calc(info, baud_rate); |
| 2763 | } else { |
| 2764 | if (info->chip_rev >= CD1400_REV_J) { |
| 2765 | /* It is a CD1400 rev. J or later */ |
| 2766 | info->tbpr = baud_bpr_60[i]; /* Tx BPR */ |
| 2767 | info->tco = baud_co_60[i]; /* Tx CO */ |
| 2768 | info->rbpr = baud_bpr_60[i]; /* Rx BPR */ |
| 2769 | info->rco = baud_co_60[i]; /* Rx CO */ |
| 2770 | } else { |
| 2771 | info->tbpr = baud_bpr_25[i]; /* Tx BPR */ |
| 2772 | info->tco = baud_co_25[i]; /* Tx CO */ |
| 2773 | info->rbpr = baud_bpr_25[i]; /* Rx BPR */ |
| 2774 | info->rco = baud_co_25[i]; /* Rx CO */ |
| 2775 | } |
| 2776 | } |
| 2777 | if (baud_table[i] == 134) { |
| 2778 | /* get it right for 134.5 baud */ |
| 2779 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 2780 | 2; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2781 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2782 | ASYNC_SPD_CUST) { |
| 2783 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2784 | baud_rate) + 2; |
| 2785 | } else if (baud_table[i]) { |
| 2786 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2787 | baud_table[i]) + 2; |
| 2788 | /* this needs to be propagated into the card info */ |
| 2789 | } else { |
| 2790 | info->timeout = 0; |
| 2791 | } |
| 2792 | /* By tradition (is it a standard?) a baud rate of zero |
| 2793 | implies the line should be/has been closed. A bit |
| 2794 | later in this routine such a test is performed. */ |
| 2795 | |
| 2796 | /* byte size and parity */ |
| 2797 | info->cor5 = 0; |
| 2798 | info->cor4 = 0; |
| 2799 | /* receive threshold */ |
| 2800 | info->cor3 = (info->default_threshold ? |
| 2801 | info->default_threshold : baud_cor3[i]); |
| 2802 | info->cor2 = CyETC; |
| 2803 | switch (cflag & CSIZE) { |
| 2804 | case CS5: |
| 2805 | info->cor1 = Cy_5_BITS; |
| 2806 | break; |
| 2807 | case CS6: |
| 2808 | info->cor1 = Cy_6_BITS; |
| 2809 | break; |
| 2810 | case CS7: |
| 2811 | info->cor1 = Cy_7_BITS; |
| 2812 | break; |
| 2813 | case CS8: |
| 2814 | info->cor1 = Cy_8_BITS; |
| 2815 | break; |
| 2816 | } |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2817 | if (cflag & CSTOPB) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2818 | info->cor1 |= Cy_2_STOP; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2819 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2820 | if (cflag & PARENB) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2821 | if (cflag & PARODD) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2822 | info->cor1 |= CyPARITY_O; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2823 | else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2824 | info->cor1 |= CyPARITY_E; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2825 | } else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2826 | info->cor1 |= CyPARITY_NONE; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2827 | |
| 2828 | /* CTS flow control flag */ |
| 2829 | if (cflag & CRTSCTS) { |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2830 | info->port.flags |= ASYNC_CTS_FLOW; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2831 | info->cor2 |= CyCtsAE; |
| 2832 | } else { |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2833 | info->port.flags &= ~ASYNC_CTS_FLOW; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2834 | info->cor2 &= ~CyCtsAE; |
| 2835 | } |
| 2836 | if (cflag & CLOCAL) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2837 | info->port.flags &= ~ASYNC_CHECK_CD; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2838 | else |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2839 | info->port.flags |= ASYNC_CHECK_CD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2840 | |
| 2841 | /*********************************************** |
| 2842 | The hardware option, CyRtsAO, presents RTS when |
| 2843 | the chip has characters to send. Since most modems |
| 2844 | use RTS as reverse (inbound) flow control, this |
| 2845 | option is not used. If inbound flow control is |
| 2846 | necessary, DTR can be programmed to provide the |
| 2847 | appropriate signals for use with a non-standard |
| 2848 | cable. Contact Marcio Saito for details. |
| 2849 | ***********************************************/ |
| 2850 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2851 | chip = channel >> 2; |
| 2852 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 2853 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2855 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2856 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2857 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2858 | /* tx and rx baud rate */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2859 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2860 | cy_writeb(base_addr + (CyTCOR << index), info->tco); |
| 2861 | cy_writeb(base_addr + (CyTBPR << index), info->tbpr); |
| 2862 | cy_writeb(base_addr + (CyRCOR << index), info->rco); |
| 2863 | cy_writeb(base_addr + (CyRBPR << index), info->rbpr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2864 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2865 | /* set line characteristics according configuration */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2867 | cy_writeb(base_addr + (CySCHR1 << index), START_CHAR(tty)); |
| 2868 | cy_writeb(base_addr + (CySCHR2 << index), STOP_CHAR(tty)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2869 | cy_writeb(base_addr + (CyCOR1 << index), info->cor1); |
| 2870 | cy_writeb(base_addr + (CyCOR2 << index), info->cor2); |
| 2871 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
| 2872 | cy_writeb(base_addr + (CyCOR4 << index), info->cor4); |
| 2873 | cy_writeb(base_addr + (CyCOR5 << index), info->cor5); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2874 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2875 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch | |
| 2876 | CyCOR3ch, index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 2878 | /* !!! Is this needed? */ |
| 2879 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2880 | cy_writeb(base_addr + (CyRTPR << index), |
| 2881 | (info->default_timeout ? info->default_timeout : 0x02)); |
| 2882 | /* 10ms rx timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2883 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2884 | if (C_CLOCAL(tty)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2885 | /* without modem intr */ |
| 2886 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2887 | readb(base_addr + (CySRER << index)) | CyMdmCh); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2888 | /* act on 1->0 modem transitions */ |
| 2889 | if ((cflag & CRTSCTS) && info->rflow) { |
| 2890 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 2891 | (CyCTS | rflow_thr[i])); |
| 2892 | } else { |
| 2893 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 2894 | CyCTS); |
| 2895 | } |
| 2896 | /* act on 0->1 modem transitions */ |
| 2897 | cy_writeb(base_addr + (CyMCOR2 << index), CyCTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2898 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2899 | /* without modem intr */ |
| 2900 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2901 | readb(base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2902 | (CySRER << index)) | CyMdmCh); |
| 2903 | /* act on 1->0 modem transitions */ |
| 2904 | if ((cflag & CRTSCTS) && info->rflow) { |
| 2905 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 2906 | (CyDSR | CyCTS | CyRI | CyDCD | |
| 2907 | rflow_thr[i])); |
| 2908 | } else { |
| 2909 | cy_writeb(base_addr + (CyMCOR1 << index), |
| 2910 | CyDSR | CyCTS | CyRI | CyDCD); |
| 2911 | } |
| 2912 | /* act on 0->1 modem transitions */ |
| 2913 | cy_writeb(base_addr + (CyMCOR2 << index), |
| 2914 | CyDSR | CyCTS | CyRI | CyDCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2915 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2916 | |
| 2917 | if (i == 0) { /* baud rate is zero, turn off line */ |
| 2918 | if (info->rtsdtr_inv) { |
| 2919 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 2920 | ~CyRTS); |
| 2921 | } else { |
| 2922 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 2923 | ~CyDTR); |
| 2924 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2925 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2926 | printk(KERN_DEBUG "cyc:set_line_char dropping DTR\n"); |
| 2927 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2928 | readb(base_addr + (CyMSVR1 << index)), |
| 2929 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2930 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2931 | } else { |
| 2932 | if (info->rtsdtr_inv) { |
| 2933 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 2934 | CyRTS); |
| 2935 | } else { |
| 2936 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 2937 | CyDTR); |
| 2938 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2939 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 2940 | printk(KERN_DEBUG "cyc:set_line_char raising DTR\n"); |
| 2941 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 2942 | readb(base_addr + (CyMSVR1 << index)), |
| 2943 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2944 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2945 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2946 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2947 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 2948 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2950 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 2951 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Klaus Kudielka | 1a86b5e | 2007-05-08 00:26:26 -0700 | [diff] [blame] | 2952 | __u32 sw_flow; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2953 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2954 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 2955 | if (!cyz_is_loaded(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2956 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2958 | /* baud rate */ |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 2959 | baud = tty_get_baud_rate(tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2960 | if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2961 | ASYNC_SPD_CUST) { |
| 2962 | if (info->custom_divisor) |
| 2963 | baud_rate = info->baud / info->custom_divisor; |
| 2964 | else |
| 2965 | baud_rate = info->baud; |
| 2966 | } else if (baud > CYZ_MAX_SPEED) { |
| 2967 | baud = CYZ_MAX_SPEED; |
| 2968 | } |
| 2969 | cy_writel(&ch_ctrl->comm_baud, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2970 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2971 | if (baud == 134) { |
| 2972 | /* get it right for 134.5 baud */ |
| 2973 | info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) + |
| 2974 | 2; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 2975 | } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) == |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2976 | ASYNC_SPD_CUST) { |
| 2977 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2978 | baud_rate) + 2; |
| 2979 | } else if (baud) { |
| 2980 | info->timeout = (info->xmit_fifo_size * HZ * 15 / |
| 2981 | baud) + 2; |
| 2982 | /* this needs to be propagated into the card info */ |
| 2983 | } else { |
| 2984 | info->timeout = 0; |
| 2985 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2986 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 2987 | /* byte size and parity */ |
| 2988 | switch (cflag & CSIZE) { |
| 2989 | case CS5: |
| 2990 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5); |
| 2991 | break; |
| 2992 | case CS6: |
| 2993 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6); |
| 2994 | break; |
| 2995 | case CS7: |
| 2996 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7); |
| 2997 | break; |
| 2998 | case CS8: |
| 2999 | cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8); |
| 3000 | break; |
| 3001 | } |
| 3002 | if (cflag & CSTOPB) { |
| 3003 | cy_writel(&ch_ctrl->comm_data_l, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3004 | readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3005 | } else { |
| 3006 | cy_writel(&ch_ctrl->comm_data_l, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3007 | readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3008 | } |
| 3009 | if (cflag & PARENB) { |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3010 | if (cflag & PARODD) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3011 | cy_writel(&ch_ctrl->comm_parity, C_PR_ODD); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3012 | else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3013 | cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3014 | } else |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3015 | cy_writel(&ch_ctrl->comm_parity, C_PR_NONE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3016 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3017 | /* CTS flow control flag */ |
| 3018 | if (cflag & CRTSCTS) { |
| 3019 | cy_writel(&ch_ctrl->hw_flow, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3020 | readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3021 | } else { |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3022 | cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) & |
| 3023 | ~(C_RS_CTS | C_RS_RTS)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3024 | } |
| 3025 | /* As the HW flow control is done in firmware, the driver |
| 3026 | doesn't need to care about it */ |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3027 | info->port.flags &= ~ASYNC_CTS_FLOW; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3028 | |
| 3029 | /* XON/XOFF/XANY flow control flags */ |
| 3030 | sw_flow = 0; |
| 3031 | if (iflag & IXON) { |
| 3032 | sw_flow |= C_FL_OXX; |
| 3033 | if (iflag & IXANY) |
| 3034 | sw_flow |= C_FL_OIXANY; |
| 3035 | } |
| 3036 | cy_writel(&ch_ctrl->sw_flow, sw_flow); |
| 3037 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3038 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3039 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3040 | printk(KERN_ERR "cyc:set_line_char retval on ttyC%d " |
| 3041 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3042 | } |
| 3043 | |
| 3044 | /* CD sensitivity */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3045 | if (cflag & CLOCAL) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3046 | info->port.flags &= ~ASYNC_CHECK_CD; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3047 | else |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3048 | info->port.flags |= ASYNC_CHECK_CD; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3049 | |
| 3050 | if (baud == 0) { /* baud rate is zero, turn off line */ |
| 3051 | cy_writel(&ch_ctrl->rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3052 | readl(&ch_ctrl->rs_control) & ~C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3053 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3054 | printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3055 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3056 | } else { |
| 3057 | cy_writel(&ch_ctrl->rs_control, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3058 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3059 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3060 | printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3061 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3062 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3064 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3065 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3066 | printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d " |
| 3067 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3068 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3069 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3070 | clear_bit(TTY_IO_ERROR, &tty->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3071 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3072 | } /* set_line_char */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3073 | |
| 3074 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3075 | get_serial_info(struct cyclades_port *info, |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3076 | struct serial_struct __user *retinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3077 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3078 | struct serial_struct tmp; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3079 | struct cyclades_card *cinfo = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3080 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3081 | if (!retinfo) |
| 3082 | return -EFAULT; |
| 3083 | memset(&tmp, 0, sizeof(tmp)); |
| 3084 | tmp.type = info->type; |
| 3085 | tmp.line = info->line; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3086 | tmp.port = (info->card - cy_card) * 0x100 + info->line - |
| 3087 | cinfo->first_line; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3088 | tmp.irq = cinfo->irq; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3089 | tmp.flags = info->port.flags; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3090 | tmp.close_delay = info->port.close_delay; |
| 3091 | tmp.closing_wait = info->port.closing_wait; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3092 | tmp.baud_base = info->baud; |
| 3093 | tmp.custom_divisor = info->custom_divisor; |
| 3094 | tmp.hub6 = 0; /*!!! */ |
| 3095 | return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0; |
| 3096 | } /* get_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3097 | |
| 3098 | static int |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3099 | cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty, |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3100 | struct serial_struct __user *new_info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3101 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3102 | struct serial_struct new_serial; |
| 3103 | struct cyclades_port old_info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3104 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3105 | if (copy_from_user(&new_serial, new_info, sizeof(new_serial))) |
| 3106 | return -EFAULT; |
| 3107 | old_info = *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3108 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3109 | if (!capable(CAP_SYS_ADMIN)) { |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3110 | if (new_serial.close_delay != info->port.close_delay || |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3111 | new_serial.baud_base != info->baud || |
| 3112 | (new_serial.flags & ASYNC_FLAGS & |
| 3113 | ~ASYNC_USR_MASK) != |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3114 | (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3115 | return -EPERM; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3116 | info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3117 | (new_serial.flags & ASYNC_USR_MASK); |
| 3118 | info->baud = new_serial.baud_base; |
| 3119 | info->custom_divisor = new_serial.custom_divisor; |
| 3120 | goto check_and_exit; |
| 3121 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3123 | /* |
| 3124 | * OK, past this point, all the error checking has been done. |
| 3125 | * At this point, we start making changes..... |
| 3126 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3127 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3128 | info->baud = new_serial.baud_base; |
| 3129 | info->custom_divisor = new_serial.custom_divisor; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3130 | info->port.flags = (info->port.flags & ~ASYNC_FLAGS) | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3131 | (new_serial.flags & ASYNC_FLAGS); |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3132 | info->port.close_delay = new_serial.close_delay * HZ / 100; |
| 3133 | info->port.closing_wait = new_serial.closing_wait * HZ / 100; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3134 | |
| 3135 | check_and_exit: |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3136 | if (info->port.flags & ASYNC_INITIALIZED) { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3137 | cy_set_line_char(info, tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3138 | return 0; |
| 3139 | } else { |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3140 | return cy_startup(info, tty); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3141 | } |
| 3142 | } /* set_serial_info */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3143 | |
| 3144 | /* |
| 3145 | * get_lsr_info - get line status register info |
| 3146 | * |
| 3147 | * Purpose: Let user call ioctl() to get info when the UART physically |
| 3148 | * is emptied. On bus types like RS485, the transmitter must |
| 3149 | * release the bus after transmitting. This must be done when |
| 3150 | * the transmit shift register is empty, not be done when the |
| 3151 | * transmit holding register is empty. This functionality |
| 3152 | * allows an RS485 driver to be written in user space. |
| 3153 | */ |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3154 | 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] | 3155 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3156 | struct cyclades_card *card; |
| 3157 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3158 | unsigned char status; |
| 3159 | unsigned int result; |
| 3160 | unsigned long flags; |
| 3161 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3162 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3163 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3164 | channel = (info->line) - (card->first_line); |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3165 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3166 | chip = channel >> 2; |
| 3167 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3168 | index = card->bus_index; |
| 3169 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3170 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3171 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3172 | status = readb(base_addr + (CySRER << index)) & |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3173 | (CyTxRdy | CyTxMpty); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3174 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3175 | result = (status ? 0 : TIOCSER_TEMT); |
| 3176 | } else { |
| 3177 | /* Not supported yet */ |
| 3178 | return -EINVAL; |
| 3179 | } |
| 3180 | return put_user(result, (unsigned long __user *)value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3181 | } |
| 3182 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3183 | static int cy_tiocmget(struct tty_struct *tty, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3184 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3185 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3186 | struct cyclades_card *card; |
| 3187 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3188 | void __iomem *base_addr; |
| 3189 | unsigned long flags; |
| 3190 | unsigned char status; |
| 3191 | unsigned long lstatus; |
| 3192 | unsigned int result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3193 | |
Harvey Harrison | bf9d892 | 2008-04-30 00:55:10 -0700 | [diff] [blame] | 3194 | if (serial_paranoia_check(info, tty->name, __func__)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3195 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3196 | |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3197 | lock_kernel(); |
| 3198 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3199 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3200 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3201 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3202 | chip = channel >> 2; |
| 3203 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3204 | index = card->bus_index; |
| 3205 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3206 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3207 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3208 | cy_writeb(base_addr + (CyCAR << index), (u_char) channel); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3209 | status = readb(base_addr + (CyMSVR1 << index)); |
| 3210 | status |= readb(base_addr + (CyMSVR2 << index)); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3211 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3212 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3213 | if (info->rtsdtr_inv) { |
| 3214 | result = ((status & CyRTS) ? TIOCM_DTR : 0) | |
| 3215 | ((status & CyDTR) ? TIOCM_RTS : 0); |
| 3216 | } else { |
| 3217 | result = ((status & CyRTS) ? TIOCM_RTS : 0) | |
| 3218 | ((status & CyDTR) ? TIOCM_DTR : 0); |
| 3219 | } |
| 3220 | result |= ((status & CyDCD) ? TIOCM_CAR : 0) | |
| 3221 | ((status & CyRI) ? TIOCM_RNG : 0) | |
| 3222 | ((status & CyDSR) ? TIOCM_DSR : 0) | |
| 3223 | ((status & CyCTS) ? TIOCM_CTS : 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3224 | } else { |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3225 | if (cyz_is_loaded(card)) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3226 | lstatus = readl(&info->u.cyz.ch_ctrl->rs_status); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3227 | result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) | |
| 3228 | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) | |
| 3229 | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) | |
| 3230 | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) | |
| 3231 | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) | |
| 3232 | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); |
| 3233 | } else { |
| 3234 | result = 0; |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3235 | unlock_kernel(); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3236 | return -ENODEV; |
| 3237 | } |
| 3238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3239 | } |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3240 | unlock_kernel(); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3241 | return result; |
| 3242 | } /* cy_tiomget */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3243 | |
| 3244 | static int |
| 3245 | cy_tiocmset(struct tty_struct *tty, struct file *file, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3246 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3247 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3248 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3249 | struct cyclades_card *card; |
| 3250 | int chip, channel, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3251 | unsigned long flags; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3252 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3253 | |
Harvey Harrison | bf9d892 | 2008-04-30 00:55:10 -0700 | [diff] [blame] | 3254 | if (serial_paranoia_check(info, tty->name, __func__)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3255 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3256 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3257 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3258 | channel = (info->line) - (card->first_line); |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3259 | if (!cy_is_Z(card)) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3260 | void __iomem *base_addr; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3261 | chip = channel >> 2; |
| 3262 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3263 | index = card->bus_index; |
| 3264 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3265 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3266 | if (set & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3267 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3268 | cy_writeb(base_addr + (CyCAR << index), |
| 3269 | (u_char) channel); |
| 3270 | if (info->rtsdtr_inv) { |
| 3271 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3272 | CyDTR); |
| 3273 | } else { |
| 3274 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3275 | CyRTS); |
| 3276 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3277 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3278 | } |
| 3279 | if (clear & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3280 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3281 | cy_writeb(base_addr + (CyCAR << index), |
| 3282 | (u_char) channel); |
| 3283 | if (info->rtsdtr_inv) { |
| 3284 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3285 | ~CyDTR); |
| 3286 | } else { |
| 3287 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3288 | ~CyRTS); |
| 3289 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3290 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3291 | } |
| 3292 | if (set & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3293 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3294 | cy_writeb(base_addr + (CyCAR << index), |
| 3295 | (u_char) channel); |
| 3296 | if (info->rtsdtr_inv) { |
| 3297 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3298 | CyRTS); |
| 3299 | } else { |
| 3300 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3301 | CyDTR); |
| 3302 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3303 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3304 | printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n"); |
| 3305 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3306 | readb(base_addr + (CyMSVR1 << index)), |
| 3307 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3308 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3309 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3310 | } |
| 3311 | if (clear & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3312 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3313 | cy_writeb(base_addr + (CyCAR << index), |
| 3314 | (u_char) channel); |
| 3315 | if (info->rtsdtr_inv) { |
| 3316 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3317 | ~CyRTS); |
| 3318 | } else { |
| 3319 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3320 | ~CyDTR); |
| 3321 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3322 | |
| 3323 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3324 | printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n"); |
| 3325 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3326 | readb(base_addr + (CyMSVR1 << index)), |
| 3327 | readb(base_addr + (CyMSVR2 << index))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3328 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3329 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3330 | } |
| 3331 | } else { |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3332 | if (cyz_is_loaded(card)) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3333 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3334 | |
| 3335 | if (set & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3336 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3337 | cy_writel(&ch_ctrl->rs_control, |
| 3338 | readl(&ch_ctrl->rs_control) | C_RS_RTS); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3339 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3340 | } |
| 3341 | if (clear & TIOCM_RTS) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3342 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3343 | cy_writel(&ch_ctrl->rs_control, |
| 3344 | readl(&ch_ctrl->rs_control) & |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3345 | ~C_RS_RTS); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3346 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3347 | } |
| 3348 | if (set & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3349 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3350 | cy_writel(&ch_ctrl->rs_control, |
| 3351 | readl(&ch_ctrl->rs_control) | C_RS_DTR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3352 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3353 | printk(KERN_DEBUG "cyc:set_modem_info raising " |
| 3354 | "Z DTR\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3355 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3356 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3357 | } |
| 3358 | if (clear & TIOCM_DTR) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3359 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 3360 | cy_writel(&ch_ctrl->rs_control, |
| 3361 | readl(&ch_ctrl->rs_control) & |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3362 | ~C_RS_DTR); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3363 | #ifdef CY_DEBUG_DTR |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3364 | printk(KERN_DEBUG "cyc:set_modem_info clearing " |
| 3365 | "Z DTR\n"); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3366 | #endif |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3367 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3368 | } |
| 3369 | } else { |
| 3370 | return -ENODEV; |
| 3371 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3372 | spin_lock_irqsave(&card->card_lock, flags); |
| 3373 | retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3374 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3375 | printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d " |
| 3376 | "was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3377 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3378 | spin_unlock_irqrestore(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3379 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3380 | return 0; |
| 3381 | } /* cy_tiocmset */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3382 | |
| 3383 | /* |
| 3384 | * cy_break() --- routine which turns the break handling on or off |
| 3385 | */ |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 3386 | static int cy_break(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3387 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3388 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3389 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3390 | unsigned long flags; |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 3391 | int retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3392 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3393 | if (serial_paranoia_check(info, tty->name, "cy_break")) |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 3394 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3395 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3396 | card = info->card; |
| 3397 | |
| 3398 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3399 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3400 | /* Let the transmit ISR take care of this (since it |
| 3401 | requires stuffing characters into the output stream). |
| 3402 | */ |
| 3403 | if (break_state == -1) { |
| 3404 | if (!info->breakon) { |
| 3405 | info->breakon = 1; |
| 3406 | if (!info->xmit_cnt) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3407 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3408 | start_xmit(info); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3409 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3410 | } |
| 3411 | } |
| 3412 | } else { |
| 3413 | if (!info->breakoff) { |
| 3414 | info->breakoff = 1; |
| 3415 | if (!info->xmit_cnt) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3416 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3417 | start_xmit(info); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3418 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3419 | } |
| 3420 | } |
| 3421 | } |
| 3422 | } else { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3423 | if (break_state == -1) { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3424 | retval = cyz_issue_cmd(card, |
| 3425 | info->line - card->first_line, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3426 | C_CM_SET_BREAK, 0L); |
| 3427 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3428 | printk(KERN_ERR "cyc:cy_break (set) retval on " |
| 3429 | "ttyC%d was %x\n", info->line, retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3430 | } |
| 3431 | } else { |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3432 | retval = cyz_issue_cmd(card, |
| 3433 | info->line - card->first_line, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3434 | C_CM_CLR_BREAK, 0L); |
| 3435 | if (retval != 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3436 | printk(KERN_DEBUG "cyc:cy_break (clr) retval " |
| 3437 | "on ttyC%d was %x\n", info->line, |
| 3438 | retval); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3439 | } |
| 3440 | } |
| 3441 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3442 | spin_unlock_irqrestore(&card->card_lock, flags); |
Alan Cox | 9e98966 | 2008-07-22 11:18:03 +0100 | [diff] [blame] | 3443 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3444 | } /* cy_break */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3445 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3446 | static int get_mon_info(struct cyclades_port *info, |
| 3447 | struct cyclades_monitor __user *mon) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3448 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3449 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3450 | if (copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) |
| 3451 | return -EFAULT; |
| 3452 | info->mon.int_count = 0; |
| 3453 | info->mon.char_count = 0; |
| 3454 | info->mon.char_max = 0; |
| 3455 | info->mon.char_last = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3456 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3457 | } /* get_mon_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 | static int set_threshold(struct cyclades_port *info, unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3460 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3461 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3462 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3463 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3464 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3465 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3466 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3467 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3468 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3469 | chip = channel >> 2; |
| 3470 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3471 | index = card->bus_index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3472 | base_addr = |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3473 | card->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3474 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3475 | info->cor3 &= ~CyREC_FIFO; |
| 3476 | info->cor3 |= value & CyREC_FIFO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3477 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3478 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3479 | cy_writeb(base_addr + (CyCOR3 << index), info->cor3); |
| 3480 | cyy_issue_cmd(base_addr, CyCOR_CHANGE | CyCOR3ch, index); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3481 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3482 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3483 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3484 | } /* set_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3485 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3486 | static int get_threshold(struct cyclades_port *info, |
| 3487 | unsigned long __user *value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3488 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3489 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3490 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3491 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3492 | unsigned long tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3493 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3494 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3495 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3496 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3497 | chip = channel >> 2; |
| 3498 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3499 | index = card->bus_index; |
| 3500 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3501 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3502 | tmp = readb(base_addr + (CyCOR3 << index)) & CyREC_FIFO; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3503 | return put_user(tmp, value); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3504 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 3505 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3506 | } /* get_threshold */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3507 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3508 | static int set_default_threshold(struct cyclades_port *info, |
| 3509 | unsigned long value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3510 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3511 | info->default_threshold = value & 0x0f; |
| 3512 | return 0; |
| 3513 | } /* set_default_threshold */ |
| 3514 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3515 | static int get_default_threshold(struct cyclades_port *info, |
| 3516 | unsigned long __user *value) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3517 | { |
| 3518 | return put_user(info->default_threshold, value); |
| 3519 | } /* get_default_threshold */ |
| 3520 | |
| 3521 | static int set_timeout(struct cyclades_port *info, unsigned long value) |
| 3522 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3523 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3524 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3525 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3526 | unsigned long flags; |
| 3527 | |
| 3528 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3529 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3530 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3531 | chip = channel >> 2; |
| 3532 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3533 | index = card->bus_index; |
| 3534 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3535 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3536 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3537 | cy_writeb(base_addr + (CyRTPR << index), value & 0xff); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3538 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3539 | } |
| 3540 | return 0; |
| 3541 | } /* set_timeout */ |
| 3542 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3543 | static int get_timeout(struct cyclades_port *info, |
| 3544 | unsigned long __user *value) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3545 | { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3546 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3547 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3548 | int channel, chip, index; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3549 | unsigned long tmp; |
| 3550 | |
| 3551 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3552 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3553 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3554 | chip = channel >> 2; |
| 3555 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3556 | index = card->bus_index; |
| 3557 | base_addr = card->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3558 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3559 | tmp = readb(base_addr + (CyRTPR << index)); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3560 | return put_user(tmp, value); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3561 | } |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 3562 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3563 | } /* get_timeout */ |
| 3564 | |
| 3565 | static int set_default_timeout(struct cyclades_port *info, unsigned long value) |
| 3566 | { |
| 3567 | info->default_timeout = value & 0xff; |
| 3568 | return 0; |
| 3569 | } /* set_default_timeout */ |
| 3570 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3571 | static int get_default_timeout(struct cyclades_port *info, |
| 3572 | unsigned long __user *value) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3573 | { |
| 3574 | return put_user(info->default_timeout, value); |
| 3575 | } /* get_default_timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3576 | |
| 3577 | /* |
| 3578 | * This routine allows the tty driver to implement device- |
| 3579 | * specific ioctl's. If the ioctl number passed in cmd is |
| 3580 | * not recognized by the driver, it should return ENOIOCTLCMD. |
| 3581 | */ |
| 3582 | static int |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3583 | cy_ioctl(struct tty_struct *tty, struct file *file, |
| 3584 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3585 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3586 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3587 | struct cyclades_icount cprev, cnow; /* kernel counter temps */ |
| 3588 | struct serial_icounter_struct __user *p_cuser; /* user space */ |
| 3589 | int ret_val = 0; |
| 3590 | unsigned long flags; |
| 3591 | void __user *argp = (void __user *)arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3592 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3593 | if (serial_paranoia_check(info, tty->name, "cy_ioctl")) |
| 3594 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3595 | |
| 3596 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3597 | printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", |
| 3598 | info->line, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3599 | #endif |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3600 | lock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3601 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3602 | switch (cmd) { |
| 3603 | case CYGETMON: |
| 3604 | ret_val = get_mon_info(info, argp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3605 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3606 | case CYGETTHRESH: |
| 3607 | ret_val = get_threshold(info, argp); |
| 3608 | break; |
| 3609 | case CYSETTHRESH: |
| 3610 | ret_val = set_threshold(info, arg); |
| 3611 | break; |
| 3612 | case CYGETDEFTHRESH: |
| 3613 | ret_val = get_default_threshold(info, argp); |
| 3614 | break; |
| 3615 | case CYSETDEFTHRESH: |
| 3616 | ret_val = set_default_threshold(info, arg); |
| 3617 | break; |
| 3618 | case CYGETTIMEOUT: |
| 3619 | ret_val = get_timeout(info, argp); |
| 3620 | break; |
| 3621 | case CYSETTIMEOUT: |
| 3622 | ret_val = set_timeout(info, arg); |
| 3623 | break; |
| 3624 | case CYGETDEFTIMEOUT: |
| 3625 | ret_val = get_default_timeout(info, argp); |
| 3626 | break; |
| 3627 | case CYSETDEFTIMEOUT: |
| 3628 | ret_val = set_default_timeout(info, arg); |
| 3629 | break; |
| 3630 | case CYSETRFLOW: |
| 3631 | info->rflow = (int)arg; |
| 3632 | ret_val = 0; |
| 3633 | break; |
| 3634 | case CYGETRFLOW: |
| 3635 | ret_val = info->rflow; |
| 3636 | break; |
| 3637 | case CYSETRTSDTR_INV: |
| 3638 | info->rtsdtr_inv = (int)arg; |
| 3639 | ret_val = 0; |
| 3640 | break; |
| 3641 | case CYGETRTSDTR_INV: |
| 3642 | ret_val = info->rtsdtr_inv; |
| 3643 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3644 | case CYGETCD1400VER: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3645 | ret_val = info->chip_rev; |
| 3646 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3647 | #ifndef CONFIG_CYZ_INTR |
| 3648 | case CYZSETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3649 | cyz_polling_cycle = (arg * HZ) / 1000; |
| 3650 | ret_val = 0; |
| 3651 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3652 | case CYZGETPOLLCYCLE: |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3653 | ret_val = (cyz_polling_cycle * 1000) / HZ; |
| 3654 | break; |
| 3655 | #endif /* CONFIG_CYZ_INTR */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3656 | case CYSETWAIT: |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3657 | info->port.closing_wait = (unsigned short)arg * HZ / 100; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3658 | ret_val = 0; |
| 3659 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3660 | case CYGETWAIT: |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 3661 | ret_val = info->port.closing_wait / (HZ / 100); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3662 | break; |
| 3663 | case TIOCGSERIAL: |
| 3664 | ret_val = get_serial_info(info, argp); |
| 3665 | break; |
| 3666 | case TIOCSSERIAL: |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3667 | ret_val = cy_set_serial_info(info, tty, argp); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3668 | break; |
| 3669 | case TIOCSERGETLSR: /* Get line status register */ |
| 3670 | ret_val = get_lsr_info(info, argp); |
| 3671 | break; |
| 3672 | /* |
| 3673 | * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change |
| 3674 | * - mask passed in arg for lines of interest |
| 3675 | * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) |
| 3676 | * Caller should use TIOCGICOUNT to see which one it was |
| 3677 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3678 | case TIOCMIWAIT: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3679 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3680 | /* note the counters on entry */ |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 3681 | cnow = info->icount; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3682 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 3683 | ret_val = wait_event_interruptible(info->delta_msr_wait, ({ |
| 3684 | cprev = cnow; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3685 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3686 | cnow = info->icount; /* atomic copy */ |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3687 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3688 | |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 3689 | ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || |
| 3690 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || |
| 3691 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || |
| 3692 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)); |
| 3693 | })); |
| 3694 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3695 | |
| 3696 | /* |
| 3697 | * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) |
| 3698 | * Return: write counters to the user passed counter struct |
| 3699 | * NB: both 1->0 and 0->1 transitions are counted except for |
| 3700 | * RI where only 0->1 is counted. |
| 3701 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3702 | case TIOCGICOUNT: |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3703 | spin_lock_irqsave(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3704 | cnow = info->icount; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3705 | spin_unlock_irqrestore(&info->card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3706 | p_cuser = argp; |
| 3707 | ret_val = put_user(cnow.cts, &p_cuser->cts); |
| 3708 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3709 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3710 | ret_val = put_user(cnow.dsr, &p_cuser->dsr); |
| 3711 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3712 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3713 | ret_val = put_user(cnow.rng, &p_cuser->rng); |
| 3714 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3715 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3716 | ret_val = put_user(cnow.dcd, &p_cuser->dcd); |
| 3717 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3718 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3719 | ret_val = put_user(cnow.rx, &p_cuser->rx); |
| 3720 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3721 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3722 | ret_val = put_user(cnow.tx, &p_cuser->tx); |
| 3723 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3724 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3725 | ret_val = put_user(cnow.frame, &p_cuser->frame); |
| 3726 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3727 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3728 | ret_val = put_user(cnow.overrun, &p_cuser->overrun); |
| 3729 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3730 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3731 | ret_val = put_user(cnow.parity, &p_cuser->parity); |
| 3732 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3733 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3734 | ret_val = put_user(cnow.brk, &p_cuser->brk); |
| 3735 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3736 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3737 | ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); |
| 3738 | if (ret_val) |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3739 | break; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3740 | ret_val = 0; |
| 3741 | break; |
| 3742 | default: |
| 3743 | ret_val = -ENOIOCTLCMD; |
| 3744 | } |
Alan Cox | 7b130c0 | 2008-04-30 00:53:16 -0700 | [diff] [blame] | 3745 | unlock_kernel(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3746 | |
| 3747 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3748 | printk(KERN_DEBUG "cyc:cy_ioctl done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3749 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3750 | return ret_val; |
| 3751 | } /* cy_ioctl */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3752 | |
| 3753 | /* |
| 3754 | * This routine allows the tty driver to be notified when |
| 3755 | * device's termios settings have changed. Note that a |
| 3756 | * well-designed tty driver should be prepared to accept the case |
| 3757 | * where old == NULL, and try to do something rational. |
| 3758 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3759 | 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] | 3760 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3761 | struct cyclades_port *info = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3762 | |
| 3763 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3764 | printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3765 | #endif |
| 3766 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 3767 | cy_set_line_char(info, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3768 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3769 | if ((old_termios->c_cflag & CRTSCTS) && |
| 3770 | !(tty->termios->c_cflag & CRTSCTS)) { |
| 3771 | tty->hw_stopped = 0; |
| 3772 | cy_start(tty); |
| 3773 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3774 | #if 0 |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3775 | /* |
| 3776 | * No need to wake up processes in open wait, since they |
| 3777 | * sample the CLOCAL flag once, and don't recheck it. |
| 3778 | * XXX It's not clear whether the current behavior is correct |
| 3779 | * or not. Hence, this may change..... |
| 3780 | */ |
| 3781 | if (!(old_termios->c_cflag & CLOCAL) && |
| 3782 | (tty->termios->c_cflag & CLOCAL)) |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 3783 | wake_up_interruptible(&info->port.open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3784 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3785 | } /* cy_set_termios */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3786 | |
| 3787 | /* This function is used to send a high-priority XON/XOFF character to |
| 3788 | the device. |
| 3789 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3790 | static void cy_send_xchar(struct tty_struct *tty, char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3791 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3792 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3793 | struct cyclades_card *card; |
| 3794 | int channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3795 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3796 | if (serial_paranoia_check(info, tty->name, "cy_send_xchar")) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3797 | return; |
| 3798 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3799 | info->x_char = ch; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3800 | |
| 3801 | if (ch) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3802 | cy_start(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3803 | |
| 3804 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3805 | channel = info->line - card->first_line; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3806 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3807 | if (cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3808 | if (ch == STOP_CHAR(tty)) |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3809 | cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3810 | else if (ch == START_CHAR(tty)) |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3811 | cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3812 | } |
| 3813 | } |
| 3814 | |
| 3815 | /* This routine is called by the upper-layer tty layer to signal |
| 3816 | that incoming characters should be throttled because the input |
| 3817 | buffers are close to full. |
| 3818 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3819 | static void cy_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3820 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3821 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3822 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3823 | unsigned long flags; |
| 3824 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3825 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3826 | |
| 3827 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3828 | char buf[64]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3829 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3830 | 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] | 3831 | tty->ldisc.chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3832 | #endif |
| 3833 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3834 | if (serial_paranoia_check(info, tty->name, "cy_throttle")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3835 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3836 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3837 | card = info->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3838 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3839 | if (I_IXOFF(tty)) { |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3840 | if (!cy_is_Z(card)) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3841 | cy_send_xchar(tty, STOP_CHAR(tty)); |
| 3842 | else |
| 3843 | info->throttle = 1; |
| 3844 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3845 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3846 | if (tty->termios->c_cflag & CRTSCTS) { |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3847 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3848 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3849 | chip = channel >> 2; |
| 3850 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3851 | index = card->bus_index; |
| 3852 | base_addr = card->base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3853 | (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3854 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3855 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3856 | cy_writeb(base_addr + (CyCAR << index), |
| 3857 | (u_char) channel); |
| 3858 | if (info->rtsdtr_inv) { |
| 3859 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3860 | ~CyDTR); |
| 3861 | } else { |
| 3862 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3863 | ~CyRTS); |
| 3864 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3865 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3866 | } else { |
| 3867 | info->throttle = 1; |
| 3868 | } |
| 3869 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3870 | } /* cy_throttle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3871 | |
| 3872 | /* |
| 3873 | * This routine notifies the tty driver that it should signal |
| 3874 | * that characters can now be sent to the tty without fear of |
| 3875 | * overrunning the input buffers of the line disciplines. |
| 3876 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3877 | static void cy_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3878 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3879 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3880 | struct cyclades_card *card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3881 | unsigned long flags; |
| 3882 | void __iomem *base_addr; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3883 | int chip, channel, index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3884 | |
| 3885 | #ifdef CY_DEBUG_THROTTLE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3886 | char buf[64]; |
| 3887 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3888 | printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n", |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3889 | tty_name(tty, buf), tty_chars_in_buffer(tty), info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3890 | #endif |
| 3891 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3892 | if (serial_paranoia_check(info, tty->name, "cy_unthrottle")) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3893 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3894 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3895 | if (I_IXOFF(tty)) { |
| 3896 | if (info->x_char) |
| 3897 | info->x_char = 0; |
| 3898 | else |
| 3899 | cy_send_xchar(tty, START_CHAR(tty)); |
| 3900 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3901 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3902 | if (tty->termios->c_cflag & CRTSCTS) { |
| 3903 | card = info->card; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3904 | channel = info->line - card->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3905 | if (!cy_is_Z(card)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3906 | chip = channel >> 2; |
| 3907 | channel &= 0x03; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3908 | index = card->bus_index; |
| 3909 | base_addr = card->base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3910 | (cy_chip_offset[chip] << index); |
| 3911 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3912 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3913 | cy_writeb(base_addr + (CyCAR << index), |
| 3914 | (u_char) channel); |
| 3915 | if (info->rtsdtr_inv) { |
| 3916 | cy_writeb(base_addr + (CyMSVR2 << index), |
| 3917 | CyDTR); |
| 3918 | } else { |
| 3919 | cy_writeb(base_addr + (CyMSVR1 << index), |
| 3920 | CyRTS); |
| 3921 | } |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3922 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3923 | } else { |
| 3924 | info->throttle = 0; |
| 3925 | } |
| 3926 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3927 | } /* cy_unthrottle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3928 | |
| 3929 | /* cy_start and cy_stop provide software output flow control as a |
| 3930 | function of XON/XOFF, software CTS, and other such stuff. |
| 3931 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3932 | static void cy_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3933 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3934 | struct cyclades_card *cinfo; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3935 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3936 | void __iomem *base_addr; |
| 3937 | int chip, channel, index; |
| 3938 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3939 | |
| 3940 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3941 | printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3942 | #endif |
| 3943 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3944 | if (serial_paranoia_check(info, tty->name, "cy_stop")) |
| 3945 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3946 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3947 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3948 | channel = info->line - cinfo->first_line; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3949 | if (!cy_is_Z(cinfo)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3950 | index = cinfo->bus_index; |
| 3951 | chip = channel >> 2; |
| 3952 | channel &= 0x03; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3953 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3954 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3955 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3956 | cy_writeb(base_addr + (CyCAR << index), |
| 3957 | (u_char)(channel & 0x0003)); /* index channel */ |
| 3958 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3959 | readb(base_addr + (CySRER << index)) & ~CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3960 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3961 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3962 | } /* cy_stop */ |
| 3963 | |
| 3964 | static void cy_start(struct tty_struct *tty) |
| 3965 | { |
| 3966 | struct cyclades_card *cinfo; |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 3967 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3968 | void __iomem *base_addr; |
| 3969 | int chip, channel, index; |
| 3970 | unsigned long flags; |
| 3971 | |
| 3972 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 3973 | printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3974 | #endif |
| 3975 | |
| 3976 | if (serial_paranoia_check(info, tty->name, "cy_start")) |
| 3977 | return; |
| 3978 | |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 3979 | cinfo = info->card; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3980 | channel = info->line - cinfo->first_line; |
| 3981 | index = cinfo->bus_index; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 3982 | if (!cy_is_Z(cinfo)) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3983 | chip = channel >> 2; |
| 3984 | channel &= 0x03; |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3985 | base_addr = cinfo->base_addr + (cy_chip_offset[chip] << index); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3986 | |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3987 | spin_lock_irqsave(&cinfo->card_lock, flags); |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 3988 | cy_writeb(base_addr + (CyCAR << index), |
| 3989 | (u_char) (channel & 0x0003)); /* index channel */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3990 | cy_writeb(base_addr + (CySRER << index), |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 3991 | readb(base_addr + (CySRER << index)) | CyTxRdy); |
Jiri Slaby | 9fa1b3b18 | 2007-05-08 00:36:57 -0700 | [diff] [blame] | 3992 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3993 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3994 | } /* cy_start */ |
| 3995 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3996 | /* |
| 3997 | * cy_hangup() --- called by tty_hangup() when a hangup is signaled. |
| 3998 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 3999 | static void cy_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4000 | { |
Jiri Slaby | cab9bdd | 2007-05-08 00:35:51 -0700 | [diff] [blame] | 4001 | struct cyclades_port *info = tty->driver_data; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4002 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4003 | #ifdef CY_DEBUG_OTHER |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4004 | printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4005 | #endif |
| 4006 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4007 | if (serial_paranoia_check(info, tty->name, "cy_hangup")) |
| 4008 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4009 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4010 | cy_flush_buffer(tty); |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4011 | cy_shutdown(info, tty); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 4012 | info->port.count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4013 | #ifdef CY_DEBUG_COUNT |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4014 | printk(KERN_DEBUG "cyc:cy_hangup (%d): setting count to 0\n", |
| 4015 | current->pid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4016 | #endif |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4017 | tty_port_tty_set(&info->port, NULL); |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 4018 | info->port.flags &= ~ASYNC_NORMAL_ACTIVE; |
| 4019 | wake_up_interruptible(&info->port.open_wait); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4020 | } /* cy_hangup */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4021 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4022 | static int cyy_carrier_raised(struct tty_port *port) |
| 4023 | { |
| 4024 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 4025 | port); |
| 4026 | struct cyclades_card *cinfo = info->card; |
| 4027 | void __iomem *base = cinfo->base_addr; |
| 4028 | unsigned long flags; |
| 4029 | int channel = info->line - cinfo->first_line; |
| 4030 | int chip = channel >> 2, index = cinfo->bus_index; |
| 4031 | u32 cd; |
| 4032 | |
| 4033 | channel &= 0x03; |
| 4034 | base += cy_chip_offset[chip] << index; |
| 4035 | |
| 4036 | spin_lock_irqsave(&cinfo->card_lock, flags); |
| 4037 | cy_writeb(base + (CyCAR << index), (u8)channel); |
| 4038 | cd = readb(base + (CyMSVR1 << index)) & CyDCD; |
| 4039 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
| 4040 | |
| 4041 | return cd; |
| 4042 | } |
| 4043 | |
| 4044 | static void cyy_dtr_rts(struct tty_port *port, int raise) |
| 4045 | { |
| 4046 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 4047 | port); |
| 4048 | struct cyclades_card *cinfo = info->card; |
| 4049 | void __iomem *base = cinfo->base_addr; |
| 4050 | unsigned long flags; |
| 4051 | int channel = info->line - cinfo->first_line; |
| 4052 | int chip = channel >> 2, index = cinfo->bus_index; |
| 4053 | |
| 4054 | channel &= 0x03; |
| 4055 | base += cy_chip_offset[chip] << index; |
| 4056 | |
| 4057 | spin_lock_irqsave(&cinfo->card_lock, flags); |
| 4058 | cy_writeb(base + (CyCAR << index), (u8)channel); |
| 4059 | cy_writeb(base + (CyMSVR1 << index), raise ? CyRTS : ~CyRTS); |
| 4060 | cy_writeb(base + (CyMSVR2 << index), raise ? CyDTR : ~CyDTR); |
| 4061 | #ifdef CY_DEBUG_DTR |
| 4062 | printk(KERN_DEBUG "%s: raising DTR\n", __func__); |
| 4063 | printk(KERN_DEBUG " status: 0x%x, 0x%x\n", |
| 4064 | readb(base + (CyMSVR1 << index)), |
| 4065 | readb(base + (CyMSVR2 << index))); |
| 4066 | #endif |
| 4067 | spin_unlock_irqrestore(&cinfo->card_lock, flags); |
| 4068 | } |
| 4069 | |
| 4070 | static int cyz_carrier_raised(struct tty_port *port) |
| 4071 | { |
| 4072 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 4073 | port); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4074 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4075 | return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4076 | } |
| 4077 | |
| 4078 | static void cyz_dtr_rts(struct tty_port *port, int raise) |
| 4079 | { |
| 4080 | struct cyclades_port *info = container_of(port, struct cyclades_port, |
| 4081 | port); |
| 4082 | struct cyclades_card *cinfo = info->card; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4083 | struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl; |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4084 | int ret, channel = info->line - cinfo->first_line; |
| 4085 | u32 rs; |
| 4086 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4087 | rs = readl(&ch_ctrl->rs_control); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4088 | if (raise) |
| 4089 | rs |= C_RS_RTS | C_RS_DTR; |
| 4090 | else |
| 4091 | rs &= ~(C_RS_RTS | C_RS_DTR); |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4092 | cy_writel(&ch_ctrl->rs_control, rs); |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4093 | ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L); |
| 4094 | if (ret != 0) |
| 4095 | printk(KERN_ERR "%s: retval on ttyC%d was %x\n", |
| 4096 | __func__, info->line, ret); |
| 4097 | #ifdef CY_DEBUG_DTR |
| 4098 | printk(KERN_DEBUG "%s: raising Z DTR\n", __func__); |
| 4099 | #endif |
| 4100 | } |
| 4101 | |
| 4102 | static const struct tty_port_operations cyy_port_ops = { |
| 4103 | .carrier_raised = cyy_carrier_raised, |
| 4104 | .dtr_rts = cyy_dtr_rts, |
| 4105 | }; |
| 4106 | |
| 4107 | static const struct tty_port_operations cyz_port_ops = { |
| 4108 | .carrier_raised = cyz_carrier_raised, |
| 4109 | .dtr_rts = cyz_dtr_rts, |
| 4110 | }; |
| 4111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4112 | /* |
| 4113 | * --------------------------------------------------------------------- |
| 4114 | * cy_init() and friends |
| 4115 | * |
| 4116 | * cy_init() is called at boot-time to initialize the serial driver. |
| 4117 | * --------------------------------------------------------------------- |
| 4118 | */ |
| 4119 | |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4120 | static int __devinit cy_init_card(struct cyclades_card *cinfo) |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4121 | { |
| 4122 | struct cyclades_port *info; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4123 | unsigned int channel, port; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4124 | |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4125 | spin_lock_init(&cinfo->card_lock); |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4126 | cinfo->intr_enabled = 0; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4127 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4128 | cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports), |
| 4129 | GFP_KERNEL); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4130 | if (cinfo->ports == NULL) { |
| 4131 | printk(KERN_ERR "Cyclades: cannot allocate ports\n"); |
| 4132 | return -ENOMEM; |
| 4133 | } |
| 4134 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4135 | for (channel = 0, port = cinfo->first_line; channel < cinfo->nports; |
| 4136 | channel++, port++) { |
| 4137 | info = &cinfo->ports[channel]; |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 4138 | tty_port_init(&info->port); |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4139 | info->magic = CYCLADES_MAGIC; |
Jiri Slaby | 875b206 | 2007-05-08 00:36:49 -0700 | [diff] [blame] | 4140 | info->card = cinfo; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4141 | info->line = port; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4142 | |
Alan Cox | 44b7d1b | 2008-07-16 21:57:18 +0100 | [diff] [blame] | 4143 | info->port.closing_wait = CLOSING_WAIT_DELAY; |
| 4144 | info->port.close_delay = 5 * HZ / 10; |
Alan Cox | 77451e5 | 2008-07-16 21:57:02 +0100 | [diff] [blame] | 4145 | info->port.flags = STD_COM_FLAGS; |
Jiri Slaby | 2c7fea9 | 2007-05-08 00:36:51 -0700 | [diff] [blame] | 4146 | init_completion(&info->shutdown_wait); |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4147 | init_waitqueue_head(&info->delta_msr_wait); |
| 4148 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4149 | if (cy_is_Z(cinfo)) { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4150 | struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS; |
| 4151 | struct ZFW_CTRL *zfw_ctrl; |
| 4152 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4153 | info->port.ops = &cyz_port_ops; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4154 | info->type = PORT_STARTECH; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4155 | |
| 4156 | zfw_ctrl = cinfo->base_addr + |
| 4157 | (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 4158 | info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel]; |
| 4159 | info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; |
| 4160 | |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 4161 | if (cinfo->hw_ver == ZO_V1) |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4162 | info->xmit_fifo_size = CYZ_FIFO_SIZE; |
| 4163 | else |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4164 | info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4165 | #ifdef CONFIG_CYZ_INTR |
Jiri Slaby | 3991428 | 2007-05-08 00:36:54 -0700 | [diff] [blame] | 4166 | setup_timer(&cyz_rx_full_timer[port], |
| 4167 | cyz_rx_restart, (unsigned long)info); |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4168 | #endif |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4169 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4170 | unsigned short chip_number; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4171 | int index = cinfo->bus_index; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4172 | |
Jiri Slaby | f073757 | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 4173 | info->port.ops = &cyy_port_ops; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4174 | info->type = PORT_CIRRUS; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4175 | info->xmit_fifo_size = CyMAX_CHAR_FIFO; |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4176 | info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4177 | info->cor2 = CyETC; |
| 4178 | info->cor3 = 0x08; /* _very_ small rcv threshold */ |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4179 | |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4180 | chip_number = channel / CyPORTS_PER_CHIP; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 4181 | info->chip_rev = readb(cinfo->base_addr + |
| 4182 | (cy_chip_offset[chip_number] << index) + |
| 4183 | (CyGFRCR << index)); |
| 4184 | |
| 4185 | if (info->chip_rev >= CD1400_REV_J) { |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4186 | /* It is a CD1400 rev. J or later */ |
| 4187 | info->tbpr = baud_bpr_60[13]; /* Tx BPR */ |
| 4188 | info->tco = baud_co_60[13]; /* Tx CO */ |
| 4189 | info->rbpr = baud_bpr_60[13]; /* Rx BPR */ |
| 4190 | info->rco = baud_co_60[13]; /* Rx CO */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4191 | info->rtsdtr_inv = 1; |
| 4192 | } else { |
| 4193 | info->tbpr = baud_bpr_25[13]; /* Tx BPR */ |
| 4194 | info->tco = baud_co_25[13]; /* Tx CO */ |
| 4195 | info->rbpr = baud_bpr_25[13]; /* Rx BPR */ |
| 4196 | info->rco = baud_co_25[13]; /* Rx CO */ |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4197 | info->rtsdtr_inv = 0; |
| 4198 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4199 | info->read_status_mask = CyTIMEOUT | CySPECHAR | |
| 4200 | CyBREAK | CyPARITY | CyFRAME | CyOVERRUN; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4201 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4202 | |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4203 | } |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4204 | |
| 4205 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4206 | if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) { |
Jiri Slaby | 3046d50 | 2007-05-08 00:36:46 -0700 | [diff] [blame] | 4207 | mod_timer(&cyz_timerlist, jiffies + 1); |
| 4208 | #ifdef CY_PCI_DEBUG |
| 4209 | printk(KERN_DEBUG "Cyclades-Z polling initialized\n"); |
| 4210 | #endif |
| 4211 | } |
| 4212 | #endif |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4213 | return 0; |
Jiri Slaby | 0809e26 | 2007-05-08 00:36:14 -0700 | [diff] [blame] | 4214 | } |
| 4215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4216 | /* initialize chips on Cyclom-Y card -- return number of valid |
| 4217 | chips (which is number of ports/4) */ |
Jiri Slaby | 31b4f0a | 2007-05-08 00:36:44 -0700 | [diff] [blame] | 4218 | static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr, |
| 4219 | int index) |
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 | unsigned int chip_number; |
| 4222 | void __iomem *base_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4223 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4224 | cy_writeb(true_base_addr + (Cy_HwReset << index), 0); |
| 4225 | /* Cy_HwReset is 0x1400 */ |
| 4226 | cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0); |
| 4227 | /* Cy_ClrIntr is 0x1800 */ |
| 4228 | udelay(500L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4229 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 4230 | for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD; |
| 4231 | chip_number++) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4232 | base_addr = |
| 4233 | true_base_addr + (cy_chip_offset[chip_number] << index); |
| 4234 | mdelay(1); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4235 | if (readb(base_addr + (CyCCR << index)) != 0x00) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4236 | /************* |
| 4237 | printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", |
| 4238 | chip_number, (unsigned long)base_addr); |
| 4239 | *************/ |
| 4240 | return chip_number; |
| 4241 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4242 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4243 | cy_writeb(base_addr + (CyGFRCR << index), 0); |
| 4244 | udelay(10L); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4245 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4246 | /* The Cyclom-16Y does not decode address bit 9 and therefore |
| 4247 | cannot distinguish between references to chip 0 and a non- |
| 4248 | existent chip 4. If the preceding clearing of the supposed |
| 4249 | chip 4 GFRCR register appears at chip 0, there is no chip 4 |
| 4250 | and this must be a Cyclom-16Y, not a Cyclom-32Ye. |
| 4251 | */ |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4252 | if (chip_number == 4 && readb(true_base_addr + |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4253 | (cy_chip_offset[0] << index) + |
| 4254 | (CyGFRCR << index)) == 0) { |
| 4255 | return chip_number; |
| 4256 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4257 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4258 | cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET); |
| 4259 | mdelay(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4260 | |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4261 | if (readb(base_addr + (CyGFRCR << index)) == 0x00) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4262 | /* |
| 4263 | printk(" chip #%d at %#6lx is not responding ", |
| 4264 | chip_number, (unsigned long)base_addr); |
| 4265 | printk("(GFRCR stayed 0)\n", |
| 4266 | */ |
| 4267 | return chip_number; |
| 4268 | } |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4269 | if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) != |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4270 | 0x40) { |
| 4271 | /* |
| 4272 | printk(" chip #%d at %#6lx is not valid (GFRCR == " |
| 4273 | "%#2x)\n", |
| 4274 | chip_number, (unsigned long)base_addr, |
| 4275 | base_addr[CyGFRCR<<index]); |
| 4276 | */ |
| 4277 | return chip_number; |
| 4278 | } |
| 4279 | cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL); |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4280 | if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4281 | /* It is a CD1400 rev. J or later */ |
| 4282 | /* Impossible to reach 5ms with this chip. |
| 4283 | Changed to 2ms instead (f = 500 Hz). */ |
| 4284 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS); |
| 4285 | } else { |
| 4286 | /* f = 200 Hz */ |
| 4287 | cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS); |
| 4288 | } |
| 4289 | |
| 4290 | /* |
| 4291 | printk(" chip #%d at %#6lx is rev 0x%2x\n", |
| 4292 | chip_number, (unsigned long)base_addr, |
Jiri Slaby | db05c3b | 2007-05-08 00:35:46 -0700 | [diff] [blame] | 4293 | readb(base_addr+(CyGFRCR<<index))); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4294 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4295 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4296 | return chip_number; |
| 4297 | } /* cyy_init_card */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4298 | |
| 4299 | /* |
| 4300 | * --------------------------------------------------------------------- |
| 4301 | * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. |
| 4302 | * sets global variables and return the number of ISA boards found. |
| 4303 | * --------------------------------------------------------------------- |
| 4304 | */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4305 | static int __init cy_detect_isa(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4306 | { |
| 4307 | #ifdef CONFIG_ISA |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4308 | unsigned short cy_isa_irq, nboard; |
| 4309 | void __iomem *cy_isa_address; |
| 4310 | unsigned short i, j, cy_isa_nchan; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4311 | #ifdef MODULE |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4312 | int isparam = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4313 | #endif |
| 4314 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4315 | nboard = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4316 | |
| 4317 | #ifdef MODULE |
| 4318 | /* Check for module parameters */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4319 | for (i = 0; i < NR_CARDS; i++) { |
| 4320 | if (maddr[i] || i) { |
| 4321 | isparam = 1; |
| 4322 | cy_isa_addresses[i] = maddr[i]; |
| 4323 | } |
| 4324 | if (!maddr[i]) |
| 4325 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4326 | } |
| 4327 | #endif |
| 4328 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4329 | /* scan the address table probing for Cyclom-Y/ISA boards */ |
| 4330 | for (i = 0; i < NR_ISA_ADDRS; i++) { |
| 4331 | unsigned int isa_address = cy_isa_addresses[i]; |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 4332 | if (isa_address == 0x0000) |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4333 | return nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4334 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4335 | /* probe for CD1400... */ |
Alan Cox | cd989b3 | 2008-04-30 00:53:56 -0700 | [diff] [blame] | 4336 | cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4337 | if (cy_isa_address == NULL) { |
| 4338 | printk(KERN_ERR "Cyclom-Y/ISA: can't remap base " |
| 4339 | "address\n"); |
| 4340 | continue; |
| 4341 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4342 | cy_isa_nchan = CyPORTS_PER_CHIP * |
| 4343 | cyy_init_card(cy_isa_address, 0); |
| 4344 | if (cy_isa_nchan == 0) { |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4345 | iounmap(cy_isa_address); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4346 | continue; |
| 4347 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4348 | #ifdef MODULE |
| 4349 | if (isparam && irq[i]) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4350 | cy_isa_irq = irq[i]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4351 | else |
| 4352 | #endif |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4353 | /* find out the board's irq by probing */ |
| 4354 | cy_isa_irq = detect_isa_irq(cy_isa_address); |
| 4355 | if (cy_isa_irq == 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4356 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the " |
| 4357 | "IRQ could not be detected.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4358 | (unsigned long)cy_isa_address); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4359 | iounmap(cy_isa_address); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4360 | continue; |
| 4361 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4362 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4363 | if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4364 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
| 4365 | "more channels are available. Change NR_PORTS " |
| 4366 | "in cyclades.c and recompile kernel.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4367 | (unsigned long)cy_isa_address); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4368 | iounmap(cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4369 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4370 | } |
| 4371 | /* fill the next cy_card structure available */ |
| 4372 | for (j = 0; j < NR_CARDS; j++) { |
Jiri Slaby | f742903 | 2007-05-08 00:36:59 -0700 | [diff] [blame] | 4373 | if (cy_card[j].base_addr == NULL) |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4374 | break; |
| 4375 | } |
| 4376 | if (j == NR_CARDS) { /* no more cy_cards available */ |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4377 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no " |
| 4378 | "more cards can be used. Change NR_CARDS in " |
| 4379 | "cyclades.c and recompile kernel.\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4380 | (unsigned long)cy_isa_address); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4381 | iounmap(cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4382 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4384 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4385 | /* allocate IRQ */ |
| 4386 | if (request_irq(cy_isa_irq, cyy_interrupt, |
| 4387 | IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4388 | printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but " |
| 4389 | "could not allocate IRQ#%d.\n", |
| 4390 | (unsigned long)cy_isa_address, cy_isa_irq); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4391 | iounmap(cy_isa_address); |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4392 | return nboard; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4394 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4395 | /* set cy_card */ |
| 4396 | cy_card[j].base_addr = cy_isa_address; |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4397 | cy_card[j].ctl_addr.p9050 = NULL; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4398 | cy_card[j].irq = (int)cy_isa_irq; |
| 4399 | cy_card[j].bus_index = 0; |
| 4400 | cy_card[j].first_line = cy_next_channel; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4401 | cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP; |
| 4402 | cy_card[j].nports = cy_isa_nchan; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4403 | if (cy_init_card(&cy_card[j])) { |
| 4404 | cy_card[j].base_addr = NULL; |
| 4405 | free_irq(cy_isa_irq, &cy_card[j]); |
| 4406 | iounmap(cy_isa_address); |
| 4407 | continue; |
| 4408 | } |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4409 | nboard++; |
| 4410 | |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4411 | printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: " |
| 4412 | "%d channels starting from port %d\n", |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4413 | j + 1, (unsigned long)cy_isa_address, |
| 4414 | (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4415 | cy_isa_irq, cy_isa_nchan, cy_next_channel); |
| 4416 | |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4417 | for (j = cy_next_channel; |
| 4418 | j < cy_next_channel + cy_isa_nchan; j++) |
| 4419 | tty_register_device(cy_serial_driver, j, NULL); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4420 | cy_next_channel += cy_isa_nchan; |
| 4421 | } |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4422 | return nboard; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4423 | #else |
Jiri Slaby | 096dcfc | 2006-12-08 02:39:30 -0800 | [diff] [blame] | 4424 | return 0; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4425 | #endif /* CONFIG_ISA */ |
| 4426 | } /* cy_detect_isa */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4427 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4428 | #ifdef CONFIG_PCI |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4429 | static inline int __devinit cyc_isfwstr(const char *str, unsigned int size) |
| 4430 | { |
| 4431 | unsigned int a; |
| 4432 | |
| 4433 | for (a = 0; a < size && *str; a++, str++) |
| 4434 | if (*str & 0x80) |
| 4435 | return -EINVAL; |
| 4436 | |
| 4437 | for (; a < size; a++, str++) |
| 4438 | if (*str) |
| 4439 | return -EINVAL; |
| 4440 | |
| 4441 | return 0; |
| 4442 | } |
| 4443 | |
David Woodhouse | f61e761 | 2008-05-23 23:57:19 +0100 | [diff] [blame] | 4444 | static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data, |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4445 | unsigned int size) |
| 4446 | { |
| 4447 | for (; size > 0; size--) { |
| 4448 | cy_writel(fpga, *data++); |
| 4449 | udelay(10); |
| 4450 | } |
| 4451 | } |
| 4452 | |
| 4453 | static void __devinit plx_init(struct pci_dev *pdev, int irq, |
| 4454 | struct RUNTIME_9060 __iomem *addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4455 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4456 | /* Reset PLX */ |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4457 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4458 | udelay(100L); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4459 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4460 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4461 | /* Reload Config. Registers from EEPROM */ |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4462 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4463 | udelay(100L); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4464 | cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000); |
| 4465 | |
| 4466 | /* For some yet unknown reason, once the PLX9060 reloads the EEPROM, |
| 4467 | * the IRQ is lost and, thus, we have to re-write it to the PCI config. |
| 4468 | * registers. This will remain here until we find a permanent fix. |
| 4469 | */ |
| 4470 | pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq); |
| 4471 | } |
| 4472 | |
| 4473 | static int __devinit __cyz_load_fw(const struct firmware *fw, |
| 4474 | const char *name, const u32 mailbox, void __iomem *base, |
| 4475 | void __iomem *fpga) |
| 4476 | { |
David Woodhouse | f61e761 | 2008-05-23 23:57:19 +0100 | [diff] [blame] | 4477 | const void *ptr = fw->data; |
| 4478 | const struct zfile_header *h = ptr; |
| 4479 | const struct zfile_config *c, *cs; |
| 4480 | const struct zfile_block *b, *bs; |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4481 | unsigned int a, tmp, len = fw->size; |
| 4482 | #define BAD_FW KERN_ERR "Bad firmware: " |
| 4483 | if (len < sizeof(*h)) { |
| 4484 | printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h)); |
| 4485 | return -EINVAL; |
| 4486 | } |
| 4487 | |
| 4488 | cs = ptr + h->config_offset; |
| 4489 | bs = ptr + h->block_offset; |
| 4490 | |
| 4491 | if ((void *)(cs + h->n_config) > ptr + len || |
| 4492 | (void *)(bs + h->n_blocks) > ptr + len) { |
| 4493 | printk(BAD_FW "too short"); |
| 4494 | return -EINVAL; |
| 4495 | } |
| 4496 | |
| 4497 | if (cyc_isfwstr(h->name, sizeof(h->name)) || |
| 4498 | cyc_isfwstr(h->date, sizeof(h->date))) { |
| 4499 | printk(BAD_FW "bad formatted header string\n"); |
| 4500 | return -EINVAL; |
| 4501 | } |
| 4502 | |
| 4503 | if (strncmp(name, h->name, sizeof(h->name))) { |
| 4504 | printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name); |
| 4505 | return -EINVAL; |
| 4506 | } |
| 4507 | |
| 4508 | tmp = 0; |
| 4509 | for (c = cs; c < cs + h->n_config; c++) { |
| 4510 | for (a = 0; a < c->n_blocks; a++) |
| 4511 | if (c->block_list[a] > h->n_blocks) { |
| 4512 | printk(BAD_FW "bad block ref number in cfgs\n"); |
| 4513 | return -EINVAL; |
| 4514 | } |
| 4515 | if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */ |
| 4516 | tmp++; |
| 4517 | } |
| 4518 | if (!tmp) { |
| 4519 | printk(BAD_FW "nothing appropriate\n"); |
| 4520 | return -EINVAL; |
| 4521 | } |
| 4522 | |
| 4523 | for (b = bs; b < bs + h->n_blocks; b++) |
| 4524 | if (b->file_offset + b->size > len) { |
| 4525 | printk(BAD_FW "bad block data offset\n"); |
| 4526 | return -EINVAL; |
| 4527 | } |
| 4528 | |
| 4529 | /* everything is OK, let's seek'n'load it */ |
| 4530 | for (c = cs; c < cs + h->n_config; c++) |
| 4531 | if (c->mailbox == mailbox && c->function == 0) |
| 4532 | break; |
| 4533 | |
| 4534 | for (a = 0; a < c->n_blocks; a++) { |
| 4535 | b = &bs[c->block_list[a]]; |
| 4536 | if (b->type == ZBLOCK_FPGA) { |
| 4537 | if (fpga != NULL) |
| 4538 | cyz_fpga_copy(fpga, ptr + b->file_offset, |
| 4539 | b->size); |
| 4540 | } else { |
| 4541 | if (base != NULL) |
| 4542 | memcpy_toio(base + b->ram_offset, |
| 4543 | ptr + b->file_offset, b->size); |
| 4544 | } |
| 4545 | } |
| 4546 | #undef BAD_FW |
| 4547 | return 0; |
| 4548 | } |
| 4549 | |
| 4550 | static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr, |
| 4551 | struct RUNTIME_9060 __iomem *ctl_addr, int irq) |
| 4552 | { |
| 4553 | const struct firmware *fw; |
| 4554 | struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS; |
| 4555 | struct CUSTOM_REG __iomem *cust = base_addr; |
| 4556 | struct ZFW_CTRL __iomem *pt_zfwctrl; |
Jiri Slaby | c4923b4 | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 4557 | void __iomem *tmp; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4558 | u32 mailbox, status, nchan; |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4559 | unsigned int i; |
| 4560 | int retval; |
| 4561 | |
| 4562 | retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev); |
| 4563 | if (retval) { |
| 4564 | dev_err(&pdev->dev, "can't get firmware\n"); |
| 4565 | goto err; |
| 4566 | } |
| 4567 | |
| 4568 | /* Check whether the firmware is already loaded and running. If |
| 4569 | positive, skip this board */ |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4570 | if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4571 | u32 cntval = readl(base_addr + 0x190); |
| 4572 | |
| 4573 | udelay(100); |
| 4574 | if (cntval != readl(base_addr + 0x190)) { |
| 4575 | /* FW counter is working, FW is running */ |
| 4576 | dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. " |
| 4577 | "Skipping board.\n"); |
| 4578 | retval = 0; |
| 4579 | goto err_rel; |
| 4580 | } |
| 4581 | } |
| 4582 | |
| 4583 | /* start boot */ |
| 4584 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) & |
| 4585 | ~0x00030800UL); |
| 4586 | |
| 4587 | mailbox = readl(&ctl_addr->mail_box_0); |
| 4588 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4589 | if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4590 | /* stops CPU and set window to beginning of RAM */ |
| 4591 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 4592 | cy_writel(&cust->cpu_stop, 0); |
| 4593 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 4594 | udelay(100); |
| 4595 | } |
| 4596 | |
| 4597 | plx_init(pdev, irq, ctl_addr); |
| 4598 | |
| 4599 | if (mailbox != 0) { |
| 4600 | /* load FPGA */ |
| 4601 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL, |
| 4602 | base_addr); |
| 4603 | if (retval) |
| 4604 | goto err_rel; |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4605 | if (!__cyz_fpga_loaded(ctl_addr)) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4606 | dev_err(&pdev->dev, "fw upload successful, but fw is " |
| 4607 | "not loaded\n"); |
| 4608 | goto err_rel; |
| 4609 | } |
| 4610 | } |
| 4611 | |
| 4612 | /* stops CPU and set window to beginning of RAM */ |
| 4613 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 4614 | cy_writel(&cust->cpu_stop, 0); |
| 4615 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 4616 | udelay(100); |
| 4617 | |
| 4618 | /* clear memory */ |
Jiri Slaby | c4923b4 | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 4619 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4620 | cy_writeb(tmp, 255); |
| 4621 | if (mailbox != 0) { |
| 4622 | /* set window to last 512K of RAM */ |
| 4623 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE); |
Jiri Slaby | c4923b4 | 2007-07-17 04:05:17 -0700 | [diff] [blame] | 4624 | for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4625 | cy_writeb(tmp, 255); |
| 4626 | /* set window to beginning of RAM */ |
| 4627 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4628 | } |
| 4629 | |
| 4630 | retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL); |
| 4631 | release_firmware(fw); |
| 4632 | if (retval) |
| 4633 | goto err; |
| 4634 | |
| 4635 | /* finish boot and start boards */ |
| 4636 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 4637 | cy_writel(&cust->cpu_start, 0); |
| 4638 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 4639 | i = 0; |
| 4640 | while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40) |
| 4641 | msleep(100); |
| 4642 | if (status != ZFIRM_ID) { |
| 4643 | if (status == ZFIRM_HLT) { |
| 4644 | dev_err(&pdev->dev, "you need an external power supply " |
| 4645 | "for this number of ports. Firmware halted and " |
| 4646 | "board reset.\n"); |
| 4647 | retval = -EIO; |
| 4648 | goto err; |
| 4649 | } |
| 4650 | dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting " |
| 4651 | "some more time\n", status); |
| 4652 | while ((status = readl(&fid->signature)) != ZFIRM_ID && |
| 4653 | i++ < 200) |
| 4654 | msleep(100); |
| 4655 | if (status != ZFIRM_ID) { |
| 4656 | dev_err(&pdev->dev, "Board not started in 20 seconds! " |
| 4657 | "Giving up. (fid->signature = 0x%x)\n", |
| 4658 | status); |
| 4659 | dev_info(&pdev->dev, "*** Warning ***: if you are " |
| 4660 | "upgrading the FW, please power cycle the " |
| 4661 | "system before loading the new FW to the " |
| 4662 | "Cyclades-Z.\n"); |
| 4663 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4664 | if (__cyz_fpga_loaded(ctl_addr)) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4665 | plx_init(pdev, irq, ctl_addr); |
| 4666 | |
| 4667 | retval = -EIO; |
| 4668 | goto err; |
| 4669 | } |
| 4670 | dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n", |
| 4671 | i / 10); |
| 4672 | } |
| 4673 | pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr); |
| 4674 | |
| 4675 | dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n", |
| 4676 | base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr), |
| 4677 | base_addr + readl(&fid->zfwctrl_addr)); |
| 4678 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4679 | nchan = readl(&pt_zfwctrl->board_ctrl.n_channel); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4680 | dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n", |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4681 | readl(&pt_zfwctrl->board_ctrl.fw_version), nchan); |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4682 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4683 | if (nchan == 0) { |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4684 | dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please " |
| 4685 | "check the connection between the Z host card and the " |
| 4686 | "serial expanders.\n"); |
| 4687 | |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4688 | if (__cyz_fpga_loaded(ctl_addr)) |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4689 | plx_init(pdev, irq, ctl_addr); |
| 4690 | |
| 4691 | dev_info(&pdev->dev, "Null number of ports detected. Board " |
| 4692 | "reset.\n"); |
| 4693 | retval = 0; |
| 4694 | goto err; |
| 4695 | } |
| 4696 | |
| 4697 | cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX); |
| 4698 | cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION); |
| 4699 | |
| 4700 | /* |
| 4701 | Early firmware failed to start looking for commands. |
| 4702 | This enables firmware interrupts for those commands. |
| 4703 | */ |
| 4704 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | |
| 4705 | (1 << 17)); |
| 4706 | cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) | |
| 4707 | 0x00030800UL); |
| 4708 | |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4709 | return nchan; |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4710 | err_rel: |
| 4711 | release_firmware(fw); |
| 4712 | err: |
| 4713 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4714 | } |
| 4715 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4716 | static int __devinit cy_pci_probe(struct pci_dev *pdev, |
| 4717 | const struct pci_device_id *ent) |
| 4718 | { |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4719 | void __iomem *addr0 = NULL, *addr2 = NULL; |
| 4720 | char *card_name = NULL; |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 4721 | u32 uninitialized_var(mailbox); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4722 | unsigned int device_id, nchan = 0, card_no, i; |
| 4723 | unsigned char plx_ver; |
| 4724 | int retval, irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4725 | |
| 4726 | retval = pci_enable_device(pdev); |
| 4727 | if (retval) { |
| 4728 | dev_err(&pdev->dev, "cannot enable device\n"); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4729 | goto err; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4730 | } |
| 4731 | |
| 4732 | /* read PCI configuration area */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4733 | irq = pdev->irq; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4734 | device_id = pdev->device & ~PCI_DEVICE_ID_MASK; |
| 4735 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4736 | #if defined(__alpha__) |
| 4737 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ |
| 4738 | dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low " |
| 4739 | "addresses on Alpha systems.\n"); |
| 4740 | retval = -EIO; |
| 4741 | goto err_dis; |
| 4742 | } |
| 4743 | #endif |
| 4744 | if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) { |
| 4745 | dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low " |
| 4746 | "addresses\n"); |
| 4747 | retval = -EIO; |
| 4748 | goto err_dis; |
| 4749 | } |
| 4750 | |
| 4751 | if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { |
| 4752 | dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring " |
| 4753 | "it...\n"); |
| 4754 | pdev->resource[2].flags &= ~IORESOURCE_IO; |
| 4755 | } |
| 4756 | |
| 4757 | retval = pci_request_regions(pdev, "cyclades"); |
| 4758 | if (retval) { |
| 4759 | dev_err(&pdev->dev, "failed to reserve resources\n"); |
| 4760 | goto err_dis; |
| 4761 | } |
| 4762 | |
| 4763 | retval = -EIO; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4764 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 4765 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4766 | card_name = "Cyclom-Y"; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4767 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4768 | addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
| 4769 | CyPCI_Yctl); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4770 | if (addr0 == NULL) { |
| 4771 | dev_err(&pdev->dev, "can't remap ctl region\n"); |
| 4772 | goto err_reg; |
| 4773 | } |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4774 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
| 4775 | CyPCI_Ywin); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4776 | if (addr2 == NULL) { |
| 4777 | dev_err(&pdev->dev, "can't remap base region\n"); |
| 4778 | goto err_unmap; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4779 | } |
| 4780 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4781 | nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1); |
| 4782 | if (nchan == 0) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4783 | dev_err(&pdev->dev, "Cyclom-Y PCI host card with no " |
| 4784 | "Serial-Modules\n"); |
Andrew Morton | c847d47 | 2009-01-02 13:50:07 +0000 | [diff] [blame] | 4785 | goto err_unmap; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4786 | } |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4787 | } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) { |
| 4788 | struct RUNTIME_9060 __iomem *ctl_addr; |
| 4789 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4790 | ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0), |
| 4791 | CyPCI_Zctl); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4792 | if (addr0 == NULL) { |
| 4793 | dev_err(&pdev->dev, "can't remap ctl region\n"); |
| 4794 | goto err_reg; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4795 | } |
| 4796 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4797 | /* Disable interrupts on the PLX before resetting it */ |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4798 | cy_writew(&ctl_addr->intr_ctrl_stat, |
| 4799 | readw(&ctl_addr->intr_ctrl_stat) & ~0x0900); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4800 | |
Jiri Slaby | 054f5b0 | 2007-07-17 04:05:16 -0700 | [diff] [blame] | 4801 | plx_init(pdev, irq, addr0); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4802 | |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 4803 | mailbox = readl(&ctl_addr->mail_box_0); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4804 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4805 | addr2 = ioremap_nocache(pci_resource_start(pdev, 2), |
| 4806 | mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4807 | if (addr2 == NULL) { |
| 4808 | dev_err(&pdev->dev, "can't remap base region\n"); |
| 4809 | goto err_unmap; |
| 4810 | } |
| 4811 | |
| 4812 | if (mailbox == ZE_V1) { |
| 4813 | card_name = "Cyclades-Ze"; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4814 | } else { |
| 4815 | card_name = "Cyclades-8Zo"; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4816 | #ifdef CY_PCI_DEBUG |
| 4817 | if (mailbox == ZO_V1) { |
| 4818 | cy_writel(&ctl_addr->loc_addr_base, WIN_CREG); |
| 4819 | dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA " |
| 4820 | "id %lx, ver %lx\n", (ulong)(0xff & |
| 4821 | readl(&((struct CUSTOM_REG *)addr2)-> |
| 4822 | fpga_id)), (ulong)(0xff & |
| 4823 | readl(&((struct CUSTOM_REG *)addr2)-> |
| 4824 | fpga_version))); |
| 4825 | cy_writel(&ctl_addr->loc_addr_base, WIN_RAM); |
| 4826 | } else { |
| 4827 | dev_info(&pdev->dev, "Cyclades-Z/PCI: New " |
| 4828 | "Cyclades-Z board. FPGA not loaded\n"); |
| 4829 | } |
| 4830 | #endif |
| 4831 | /* The following clears the firmware id word. This |
| 4832 | ensures that the driver will not attempt to talk to |
| 4833 | the board until it has been properly initialized. |
| 4834 | */ |
| 4835 | if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) |
| 4836 | cy_writel(addr2 + ID_ADDRESS, 0L); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4837 | } |
Jiri Slaby | ace08c3 | 2009-06-11 12:20:38 +0100 | [diff] [blame] | 4838 | |
| 4839 | retval = cyz_load_fw(pdev, addr2, addr0, irq); |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4840 | if (retval <= 0) |
Jiri Slaby | ace08c3 | 2009-06-11 12:20:38 +0100 | [diff] [blame] | 4841 | goto err_unmap; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4842 | nchan = retval; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4843 | } |
| 4844 | |
| 4845 | if ((cy_next_channel + nchan) > NR_PORTS) { |
| 4846 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
| 4847 | "channels are available. Change NR_PORTS in " |
| 4848 | "cyclades.c and recompile kernel.\n"); |
| 4849 | goto err_unmap; |
| 4850 | } |
| 4851 | /* fill the next cy_card structure available */ |
| 4852 | for (card_no = 0; card_no < NR_CARDS; card_no++) { |
| 4853 | if (cy_card[card_no].base_addr == NULL) |
| 4854 | break; |
| 4855 | } |
| 4856 | if (card_no == NR_CARDS) { /* no more cy_cards available */ |
| 4857 | dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no " |
| 4858 | "more cards can be used. Change NR_CARDS in " |
| 4859 | "cyclades.c and recompile kernel.\n"); |
| 4860 | goto err_unmap; |
| 4861 | } |
| 4862 | |
| 4863 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 4864 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4865 | /* allocate IRQ */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4866 | retval = request_irq(irq, cyy_interrupt, |
| 4867 | IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4868 | if (retval) { |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 4869 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4870 | goto err_unmap; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4871 | } |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4872 | cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4873 | } else { |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4874 | struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS; |
| 4875 | struct ZFW_CTRL __iomem *zfw_ctrl; |
| 4876 | |
| 4877 | zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff); |
| 4878 | |
Jiri Slaby | 101b815 | 2009-06-11 12:30:10 +0100 | [diff] [blame] | 4879 | cy_card[card_no].hw_ver = mailbox; |
| 4880 | cy_card[card_no].num_chips = (unsigned int)-1; |
Jiri Slaby | f0eefdc | 2009-09-19 13:13:13 -0700 | [diff] [blame^] | 4881 | cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4882 | #ifdef CONFIG_CYZ_INTR |
| 4883 | /* allocate IRQ only if board has an IRQ */ |
| 4884 | if (irq != 0 && irq != 255) { |
| 4885 | retval = request_irq(irq, cyz_interrupt, |
| 4886 | IRQF_SHARED, "Cyclades-Z", |
| 4887 | &cy_card[card_no]); |
| 4888 | if (retval) { |
| 4889 | dev_err(&pdev->dev, "could not allocate IRQ\n"); |
| 4890 | goto err_unmap; |
| 4891 | } |
| 4892 | } |
| 4893 | #endif /* CONFIG_CYZ_INTR */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4894 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4895 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4896 | /* set cy_card */ |
| 4897 | cy_card[card_no].base_addr = addr2; |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4898 | cy_card[card_no].ctl_addr.p9050 = addr0; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4899 | cy_card[card_no].irq = irq; |
| 4900 | cy_card[card_no].bus_index = 1; |
| 4901 | cy_card[card_no].first_line = cy_next_channel; |
Jiri Slaby | 963118e | 2009-06-11 12:34:27 +0100 | [diff] [blame] | 4902 | cy_card[card_no].nports = nchan; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4903 | retval = cy_init_card(&cy_card[card_no]); |
| 4904 | if (retval) |
| 4905 | goto err_null; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4906 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4907 | pci_set_drvdata(pdev, &cy_card[card_no]); |
| 4908 | |
| 4909 | if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo || |
| 4910 | device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) { |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4911 | /* enable interrupts in the PCI interface */ |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4912 | plx_ver = readb(addr2 + CyPLX_VER) & 0x0f; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4913 | switch (plx_ver) { |
| 4914 | case PLX_9050: |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4915 | cy_writeb(addr0 + 0x4c, 0x43); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4916 | break; |
| 4917 | |
| 4918 | case PLX_9060: |
| 4919 | case PLX_9080: |
| 4920 | default: /* Old boards, use PLX_9060 */ |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4921 | { |
| 4922 | struct RUNTIME_9060 __iomem *ctl_addr = addr0; |
| 4923 | plx_init(pdev, irq, ctl_addr); |
| 4924 | cy_writew(&ctl_addr->intr_ctrl_stat, |
| 4925 | readw(&ctl_addr->intr_ctrl_stat) | 0x0900); |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4926 | break; |
| 4927 | } |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4928 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4929 | } |
| 4930 | |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4931 | dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from " |
| 4932 | "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel); |
| 4933 | for (i = cy_next_channel; i < cy_next_channel + nchan; i++) |
| 4934 | tty_register_device(cy_serial_driver, i, &pdev->dev); |
| 4935 | cy_next_channel += nchan; |
| 4936 | |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4937 | return 0; |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4938 | err_null: |
| 4939 | cy_card[card_no].base_addr = NULL; |
| 4940 | free_irq(irq, &cy_card[card_no]); |
| 4941 | err_unmap: |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4942 | iounmap(addr0); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4943 | if (addr2) |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4944 | iounmap(addr2); |
Jiri Slaby | 3137553 | 2007-05-08 00:37:04 -0700 | [diff] [blame] | 4945 | err_reg: |
| 4946 | pci_release_regions(pdev); |
| 4947 | err_dis: |
| 4948 | pci_disable_device(pdev); |
| 4949 | err: |
| 4950 | return retval; |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4951 | } |
Jiri Slaby | 58936d8 | 2007-05-08 00:36:13 -0700 | [diff] [blame] | 4952 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 4953 | static void __devexit cy_pci_remove(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4954 | { |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 4955 | struct cyclades_card *cinfo = pci_get_drvdata(pdev); |
Jiri Slaby | f3851e7 | 2007-05-08 00:36:16 -0700 | [diff] [blame] | 4956 | unsigned int i; |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 4957 | |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 4958 | /* non-Z with old PLX */ |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4959 | if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) == |
Jiri Slaby | c2ad4c7 | 2007-05-08 00:36:32 -0700 | [diff] [blame] | 4960 | PLX_9050) |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4961 | cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0); |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 4962 | else |
| 4963 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4964 | if (!cy_is_Z(cinfo)) |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 4965 | #endif |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4966 | cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat, |
| 4967 | readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) & |
| 4968 | ~0x0900); |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 4969 | |
Jiri Slaby | 24e6fd4 | 2008-10-13 10:34:09 +0100 | [diff] [blame] | 4970 | iounmap(cinfo->base_addr); |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 4971 | if (cinfo->ctl_addr.p9050) |
| 4972 | iounmap(cinfo->ctl_addr.p9050); |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 4973 | if (cinfo->irq |
| 4974 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 4975 | && !cy_is_Z(cinfo) |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 4976 | #endif /* CONFIG_CYZ_INTR */ |
| 4977 | ) |
| 4978 | free_irq(cinfo->irq, cinfo); |
| 4979 | pci_release_regions(pdev); |
| 4980 | |
| 4981 | cinfo->base_addr = NULL; |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 4982 | for (i = cinfo->first_line; i < cinfo->first_line + |
| 4983 | cinfo->nports; i++) |
| 4984 | tty_unregister_device(cy_serial_driver, i); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 4985 | cinfo->nports = 0; |
| 4986 | kfree(cinfo->ports); |
Jiri Slaby | 38d0909 | 2007-05-08 00:36:10 -0700 | [diff] [blame] | 4987 | } |
| 4988 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 4989 | static struct pci_driver cy_pci_driver = { |
| 4990 | .name = "cyclades", |
| 4991 | .id_table = cy_pci_dev_id, |
| 4992 | .probe = cy_pci_probe, |
| 4993 | .remove = __devexit_p(cy_pci_remove) |
| 4994 | }; |
| 4995 | #endif |
| 4996 | |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 4997 | static int cyclades_proc_show(struct seq_file *m, void *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4998 | { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 4999 | struct cyclades_port *info; |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5000 | unsigned int i, j; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5001 | __u32 cur_jifs = jiffies; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5002 | |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 5003 | seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn " |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5004 | "IdleIn Overruns Ldisc\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5005 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5006 | /* Output one line for each known port */ |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5007 | for (i = 0; i < NR_CARDS; i++) |
| 5008 | for (j = 0; j < cy_card[i].nports; j++) { |
| 5009 | info = &cy_card[i].ports[j]; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5010 | |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 5011 | if (info->port.count) { |
| 5012 | /* XXX is the ldisc num worth this? */ |
| 5013 | struct tty_struct *tty; |
| 5014 | struct tty_ldisc *ld; |
| 5015 | int num = 0; |
| 5016 | tty = tty_port_tty_get(&info->port); |
| 5017 | if (tty) { |
| 5018 | ld = tty_ldisc_ref(tty); |
| 5019 | if (ld) { |
| 5020 | num = ld->ops->num; |
| 5021 | tty_ldisc_deref(ld); |
| 5022 | } |
| 5023 | tty_kref_put(tty); |
| 5024 | } |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 5025 | seq_printf(m, "%3d %8lu %10lu %8lu " |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 5026 | "%10lu %8lu %9lu %6d\n", info->line, |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5027 | (cur_jifs - info->idle_stats.in_use) / |
| 5028 | HZ, info->idle_stats.xmit_bytes, |
| 5029 | (cur_jifs - info->idle_stats.xmit_idle)/ |
| 5030 | HZ, info->idle_stats.recv_bytes, |
| 5031 | (cur_jifs - info->idle_stats.recv_idle)/ |
| 5032 | HZ, info->idle_stats.overruns, |
Jiri Slaby | d13549f | 2009-09-19 13:13:12 -0700 | [diff] [blame] | 5033 | num); |
| 5034 | } else |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 5035 | seq_printf(m, "%3d %8lu %10lu %8lu " |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5036 | "%10lu %8lu %9lu %6ld\n", |
| 5037 | info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5038 | } |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 5039 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5040 | } |
| 5041 | |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 5042 | static int cyclades_proc_open(struct inode *inode, struct file *file) |
| 5043 | { |
| 5044 | return single_open(file, cyclades_proc_show, NULL); |
| 5045 | } |
| 5046 | |
| 5047 | static const struct file_operations cyclades_proc_fops = { |
| 5048 | .owner = THIS_MODULE, |
| 5049 | .open = cyclades_proc_open, |
| 5050 | .read = seq_read, |
| 5051 | .llseek = seq_lseek, |
| 5052 | .release = single_release, |
| 5053 | }; |
| 5054 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5055 | /* The serial driver boot-time initialization code! |
| 5056 | Hardware I/O ports are mapped to character special devices on a |
| 5057 | first found, first allocated manner. That is, this code searches |
| 5058 | for Cyclom cards in the system. As each is found, it is probed |
| 5059 | to discover how many chips (and thus how many ports) are present. |
| 5060 | These ports are mapped to the tty ports 32 and upward in monotonic |
| 5061 | fashion. If an 8-port card is replaced with a 16-port card, the |
| 5062 | port mapping on a following card will shift. |
| 5063 | |
| 5064 | This approach is different from what is used in the other serial |
| 5065 | device driver because the Cyclom is more properly a multiplexer, |
| 5066 | not just an aggregation of serial ports on one card. |
| 5067 | |
| 5068 | If there are more cards with more ports than have been |
| 5069 | statically allocated above, a warning is printed and the |
| 5070 | extra ports are ignored. |
| 5071 | */ |
| 5072 | |
Jeff Dike | b68e31d | 2006-10-02 02:17:18 -0700 | [diff] [blame] | 5073 | static const struct tty_operations cy_ops = { |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5074 | .open = cy_open, |
| 5075 | .close = cy_close, |
| 5076 | .write = cy_write, |
| 5077 | .put_char = cy_put_char, |
| 5078 | .flush_chars = cy_flush_chars, |
| 5079 | .write_room = cy_write_room, |
| 5080 | .chars_in_buffer = cy_chars_in_buffer, |
| 5081 | .flush_buffer = cy_flush_buffer, |
| 5082 | .ioctl = cy_ioctl, |
| 5083 | .throttle = cy_throttle, |
| 5084 | .unthrottle = cy_unthrottle, |
| 5085 | .set_termios = cy_set_termios, |
| 5086 | .stop = cy_stop, |
| 5087 | .start = cy_start, |
| 5088 | .hangup = cy_hangup, |
| 5089 | .break_ctl = cy_break, |
| 5090 | .wait_until_sent = cy_wait_until_sent, |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5091 | .tiocmget = cy_tiocmget, |
| 5092 | .tiocmset = cy_tiocmset, |
Alexey Dobriyan | 444697d | 2009-03-31 15:19:15 -0700 | [diff] [blame] | 5093 | .proc_fops = &cyclades_proc_fops, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5094 | }; |
| 5095 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5096 | static int __init cy_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5097 | { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5098 | unsigned int nboards; |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5099 | int retval = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5100 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5101 | cy_serial_driver = alloc_tty_driver(NR_PORTS); |
| 5102 | if (!cy_serial_driver) |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5103 | goto err; |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5104 | |
| 5105 | printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n", |
| 5106 | __DATE__, __TIME__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5107 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5108 | /* Initialize the tty_driver structure */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5109 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5110 | cy_serial_driver->owner = THIS_MODULE; |
| 5111 | cy_serial_driver->driver_name = "cyclades"; |
| 5112 | cy_serial_driver->name = "ttyC"; |
| 5113 | cy_serial_driver->major = CYCLADES_MAJOR; |
| 5114 | cy_serial_driver->minor_start = 0; |
| 5115 | cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; |
| 5116 | cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; |
| 5117 | cy_serial_driver->init_termios = tty_std_termios; |
| 5118 | cy_serial_driver->init_termios.c_cflag = |
| 5119 | B9600 | CS8 | CREAD | HUPCL | CLOCAL; |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 5120 | cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5121 | tty_set_operations(cy_serial_driver, &cy_ops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5122 | |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5123 | retval = tty_register_driver(cy_serial_driver); |
| 5124 | if (retval) { |
| 5125 | printk(KERN_ERR "Couldn't register Cyclades serial driver\n"); |
| 5126 | goto err_frtty; |
| 5127 | } |
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 | /* the code below is responsible to find the boards. Each different |
| 5130 | type of board has its own detection routine. If a board is found, |
| 5131 | the next cy_card structure available is set by the detection |
| 5132 | routine. These functions are responsible for checking the |
| 5133 | availability of cy_card and cy_port data structures and updating |
| 5134 | the cy_next_channel. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5135 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5136 | /* look for isa boards */ |
Jiri Slaby | 14a55a6 | 2007-05-08 00:36:18 -0700 | [diff] [blame] | 5137 | nboards = cy_detect_isa(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5138 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5139 | #ifdef CONFIG_PCI |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5140 | /* look for pci boards */ |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5141 | retval = pci_register_driver(&cy_pci_driver); |
Jesper Juhl | d941ea7 | 2007-10-18 03:06:23 -0700 | [diff] [blame] | 5142 | if (retval && !nboards) { |
| 5143 | tty_unregister_driver(cy_serial_driver); |
| 5144 | goto err_frtty; |
| 5145 | } |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5146 | #endif |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5147 | |
| 5148 | return 0; |
Jiri Slaby | 9dacf3b | 2007-05-08 00:36:20 -0700 | [diff] [blame] | 5149 | err_frtty: |
| 5150 | put_tty_driver(cy_serial_driver); |
| 5151 | err: |
| 5152 | return retval; |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5153 | } /* cy_init */ |
| 5154 | |
| 5155 | static void __exit cy_cleanup_module(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5156 | { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5157 | struct cyclades_card *card; |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 5158 | unsigned int i, e1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5159 | |
| 5160 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | b705090 | 2007-05-08 00:35:48 -0700 | [diff] [blame] | 5161 | del_timer_sync(&cyz_timerlist); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5162 | #endif /* CONFIG_CYZ_INTR */ |
| 5163 | |
Alan Cox | 15ed6cc | 2008-04-30 00:53:55 -0700 | [diff] [blame] | 5164 | e1 = tty_unregister_driver(cy_serial_driver); |
| 5165 | if (e1) |
Jiri Slaby | 2171919 | 2007-05-08 00:36:42 -0700 | [diff] [blame] | 5166 | printk(KERN_ERR "failed to unregister Cyclades serial " |
| 5167 | "driver(%d)\n", e1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5168 | |
Jiri Slaby | 6747cd9 | 2007-05-08 00:36:34 -0700 | [diff] [blame] | 5169 | #ifdef CONFIG_PCI |
| 5170 | pci_unregister_driver(&cy_pci_driver); |
| 5171 | #endif |
| 5172 | |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5173 | for (i = 0; i < NR_CARDS; i++) { |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5174 | card = &cy_card[i]; |
| 5175 | if (card->base_addr) { |
Jiri Slaby | 85c93fa | 2007-05-08 00:36:23 -0700 | [diff] [blame] | 5176 | /* clear interrupt */ |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5177 | cy_writeb(card->base_addr + Cy_ClrIntr, 0); |
| 5178 | iounmap(card->base_addr); |
Jiri Slaby | 97e87f8 | 2009-06-11 12:29:27 +0100 | [diff] [blame] | 5179 | if (card->ctl_addr.p9050) |
| 5180 | iounmap(card->ctl_addr.p9050); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5181 | if (card->irq |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5182 | #ifndef CONFIG_CYZ_INTR |
Jiri Slaby | 2693f48 | 2009-06-11 12:31:06 +0100 | [diff] [blame] | 5183 | && !cy_is_Z(card) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5184 | #endif /* CONFIG_CYZ_INTR */ |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5185 | ) |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5186 | free_irq(card->irq, card); |
Jiri Slaby | 65f76a8 | 2007-10-18 03:06:22 -0700 | [diff] [blame] | 5187 | for (e1 = card->first_line; e1 < card->first_line + |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5188 | card->nports; e1++) |
Jiri Slaby | 6ad1ccc | 2007-05-08 00:36:22 -0700 | [diff] [blame] | 5189 | tty_unregister_device(cy_serial_driver, e1); |
Jiri Slaby | dd025c0 | 2007-05-08 00:37:02 -0700 | [diff] [blame] | 5190 | kfree(card->ports); |
Jiri Slaby | 02f1175 | 2006-12-08 02:39:28 -0800 | [diff] [blame] | 5191 | } |
| 5192 | } |
Jiri Slaby | f2462bf | 2007-05-08 00:37:01 -0700 | [diff] [blame] | 5193 | |
| 5194 | put_tty_driver(cy_serial_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5195 | } /* cy_cleanup_module */ |
| 5196 | |
| 5197 | module_init(cy_init); |
| 5198 | module_exit(cy_cleanup_module); |
| 5199 | |
| 5200 | MODULE_LICENSE("GPL"); |
Jiri Slaby | c8e1693 | 2007-05-08 00:37:05 -0700 | [diff] [blame] | 5201 | MODULE_VERSION(CY_VERSION); |
Scott James Remnant | 9f56fad | 2009-04-06 17:33:04 +0100 | [diff] [blame] | 5202 | MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR); |