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Diffstat (limited to 'drivers/char/cyclades.c')
| -rw-r--r-- | drivers/char/cyclades.c | 5540 |
1 files changed, 5540 insertions, 0 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c new file mode 100644 index 000000000000..6a5337bf0936 --- /dev/null +++ b/drivers/char/cyclades.c @@ -0,0 +1,5540 @@ +#undef BLOCKMOVE +#define Z_WAKE +#undef Z_EXT_CHARS_IN_BUFFER +static char rcsid[] = +"$Revision: 2.3.2.20 $$Date: 2004/02/25 18:14:16 $"; + +/* + * linux/drivers/char/cyclades.c + * + * This file contains the driver for the Cyclades async multiport + * serial boards. + * + * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>. + * Modified and maintained by Marcio Saito <marcio@cyclades.com>. + * Currently maintained by Cyclades team <async@cyclades.com>. + * + * For Technical support and installation problems, please send e-mail + * to support@cyclades.com. + * + * Much of the design and some of the code came from serial.c + * which was copyright (C) 1991, 1992 Linus Torvalds. It was + * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92, + * and then fixed as suggested by Michael K. Johnson 12/12/92. + * + * This version supports shared IRQ's (only for PCI boards). + * + * $Log: cyclades.c,v $ + * Prevent users from opening non-existing Z ports. + * + * Revision 2.3.2.8 2000/07/06 18:14:16 ivan + * Fixed the PCI detection function to work properly on Alpha systems. + * Implemented support for TIOCSERGETLSR ioctl. + * Implemented full support for non-standard baud rates. + * + * Revision 2.3.2.7 2000/06/01 18:26:34 ivan + * Request PLX I/O region, although driver doesn't use it, to avoid + * problems with other drivers accessing it. + * Removed count for on-board buffer characters in cy_chars_in_buffer + * (Cyclades-Z only). + * + * Revision 2.3.2.6 2000/05/05 13:56:05 ivan + * Driver now reports physical instead of virtual memory addresses. + * Masks were added to some Cyclades-Z read accesses. + * Implemented workaround for PLX9050 bug that would cause a system lockup + * in certain systems, depending on the MMIO addresses allocated to the + * board. + * Changed the Tx interrupt programming in the CD1400 chips to boost up + * performance (Cyclom-Y only). + * Code is now compliant with the new module interface (module_[init|exit]). + * Make use of the PCI helper functions to access PCI resources. + * Did some code "housekeeping". + * + * Revision 2.3.2.5 2000/01/19 14:35:33 ivan + * Fixed bug in cy_set_termios on CRTSCTS flag turnoff. + * + * Revision 2.3.2.4 2000/01/17 09:19:40 ivan + * Fixed SMP locking in Cyclom-Y interrupt handler. + * + * Revision 2.3.2.3 1999/12/28 12:11:39 ivan + * Added a new cyclades_card field called nports to allow the driver to + * know the exact number of ports found by the Z firmware after its load; + * RX buffer contention prevention logic on interrupt op mode revisited + * (Cyclades-Z only); + * Revisited printk's for Z debug; + * Driver now makes sure that the constant SERIAL_XMIT_SIZE is defined; + * + * Revision 2.3.2.2 1999/10/01 11:27:43 ivan + * Fixed bug in cyz_poll that would make all ports but port 0 + * unable to transmit/receive data (Cyclades-Z only); + * Implemented logic to prevent the RX buffer from being stuck with data + * due to a driver / firmware race condition in interrupt op mode + * (Cyclades-Z only); + * Fixed bug in block_til_ready logic that would lead to a system crash; + * Revisited cy_close spinlock usage; + * + * Revision 2.3.2.1 1999/09/28 11:01:22 ivan + * Revisited CONFIG_PCI conditional compilation for PCI board support; + * Implemented TIOCGICOUNT and TIOCMIWAIT ioctl support; + * _Major_ cleanup on the Cyclades-Z interrupt support code / logic; + * Removed CTS handling from the driver -- this is now completely handled + * by the firmware (Cyclades-Z only); + * Flush RX on-board buffers on a port open (Cyclades-Z only); + * Fixed handling of ASYNC_SPD_* TTY flags; + * Module unload now unmaps all memory area allocated by ioremap; + * + * Revision 2.3.1.1 1999/07/15 16:45:53 ivan + * Removed CY_PROC conditional compilation; + * Implemented SMP-awareness for the driver; + * Implemented a new ISA IRQ autoprobe that uses the irq_probe_[on|off] + * functions; + * The driver now accepts memory addresses (maddr=0xMMMMM) and IRQs + * (irq=NN) as parameters (only for ISA boards); + * Fixed bug in set_line_char that would prevent the Cyclades-Z + * ports from being configured at speeds above 115.2Kbps; + * Fixed bug in cy_set_termios that would prevent XON/XOFF flow control + * switching from working properly; + * The driver now only prints IRQ info for the Cyclades-Z if it's + * configured to work in interrupt mode; + * + * Revision 2.2.2.3 1999/06/28 11:13:29 ivan + * Added support for interrupt mode operation for the Z cards; + * Removed the driver inactivity control for the Z; + * Added a missing MOD_DEC_USE_COUNT in the cy_open function for when + * the Z firmware is not loaded yet; + * Replaced the "manual" Z Tx flush buffer by a call to a FW command of + * same functionality; + * Implemented workaround for IRQ setting loss on the PCI configuration + * registers after a PCI bridge EEPROM reload (affects PLX9060 only); + * + * Revision 2.2.2.2 1999/05/14 17:18:15 ivan + * /proc entry location changed to /proc/tty/driver/cyclades; + * Added support to shared IRQ's (only for PCI boards); + * Added support for Cobalt Qube2 systems; + * IRQ [de]allocation scheme revisited; + * BREAK implementation changed in order to make use of the 'break_ctl' + * TTY facility; + * Fixed typo in TTY structure field 'driver_name'; + * Included a PCI bridge reset and EEPROM reload in the board + * initialization code (for both Y and Z series). + * + * Revision 2.2.2.1 1999/04/08 16:17:43 ivan + * Fixed a bug in cy_wait_until_sent that was preventing the port to be + * closed properly after a SIGINT; + * Module usage counter scheme revisited; + * Added support to the upcoming Y PCI boards (i.e., support to additional + * PCI Device ID's). + * + * Revision 2.2.1.10 1999/01/20 16:14:29 ivan + * Removed all unnecessary page-alignement operations in ioremap calls + * (ioremap is currently safe for these operations). + * + * Revision 2.2.1.9 1998/12/30 18:18:30 ivan + * Changed access to PLX PCI bridge registers from I/O to MMIO, in + * order to make PLX9050-based boards work with certain motherboards. + * + * Revision 2.2.1.8 1998/11/13 12:46:20 ivan + * cy_close function now resets (correctly) the tty->closing flag; + * JIFFIES_DIFF macro fixed. + * + * Revision 2.2.1.7 1998/09/03 12:07:28 ivan + * Fixed bug in cy_close function, which was not informing HW of + * which port should have the reception disabled before doing so; + * fixed Cyclom-8YoP hardware detection bug. + * + * Revision 2.2.1.6 1998/08/20 17:15:39 ivan + * Fixed bug in cy_close function, which causes malfunction + * of one of the first 4 ports when a higher port is closed + * (Cyclom-Y only). + * + * Revision 2.2.1.5 1998/08/10 18:10:28 ivan + * Fixed Cyclom-4Yo hardware detection bug. + * + * Revision 2.2.1.4 1998/08/04 11:02:50 ivan + * /proc/cyclades implementation with great collaboration of + * Marc Lewis <marc@blarg.net>; + * cyy_interrupt was changed to avoid occurrence of kernel oopses + * during PPP operation. + * + * Revision 2.2.1.3 1998/06/01 12:09:10 ivan + * General code review in order to comply with 2.1 kernel standards; + * data loss prevention for slow devices revisited (cy_wait_until_sent + * was created); + * removed conditional compilation for new/old PCI structure support + * (now the driver only supports the new PCI structure). + * + * Revision 2.2.1.1 1998/03/19 16:43:12 ivan + * added conditional compilation for new/old PCI structure support; + * removed kernel series (2.0.x / 2.1.x) conditional compilation. + * + * Revision 2.1.1.3 1998/03/16 18:01:12 ivan + * cleaned up the data loss fix; + * fixed XON/XOFF handling once more (Cyclades-Z); + * general review of the driver routines; + * introduction of a mechanism to prevent data loss with slow + * printers, by forcing a delay before closing the port. + * + * Revision 2.1.1.2 1998/02/17 16:50:00 ivan + * fixed detection/handling of new CD1400 in Ye boards; + * fixed XON/XOFF handling (Cyclades-Z); + * fixed data loss caused by a premature port close; + * introduction of a flag that holds the CD1400 version ID per port + * (used by the CYGETCD1400VER new ioctl). + * + * Revision 2.1.1.1 1997/12/03 17:31:19 ivan + * Code review for the module cleanup routine; + * fixed RTS and DTR status report for new CD1400's in get_modem_info; + * includes anonymous changes regarding signal_pending. + * + * Revision 2.1 1997/11/01 17:42:41 ivan + * Changes in the driver to support Alpha systems (except 8Zo V_1); + * BREAK fix for the Cyclades-Z boards; + * driver inactivity control by FW implemented; + * introduction of flag that allows driver to take advantage of + * a special CD1400 feature related to HW flow control; + * added support for the CD1400 rev. J (Cyclom-Y boards); + * introduction of ioctls to: + * - control the rtsdtr_inv flag (Cyclom-Y); + * - control the rflow flag (Cyclom-Y); + * - adjust the polling interval (Cyclades-Z); + * + * Revision 1.36.4.33 1997/06/27 19:00:00 ivan + * Fixes related to kernel version conditional + * compilation. + * + * Revision 1.36.4.32 1997/06/14 19:30:00 ivan + * Compatibility issues between kernels 2.0.x and + * 2.1.x (mainly related to clear_bit function). + * + * Revision 1.36.4.31 1997/06/03 15:30:00 ivan + * Changes to define the memory window according to the + * board type. + * + * Revision 1.36.4.30 1997/05/16 15:30:00 daniel + * Changes to support new cycladesZ boards. + * + * Revision 1.36.4.29 1997/05/12 11:30:00 daniel + * Merge of Bentson's and Daniel's version 1.36.4.28. + * Corrects bug in cy_detect_pci: check if there are more + * ports than the number of static structs allocated. + * Warning message during initialization if this driver is + * used with the new generation of cycladesZ boards. Those + * will be supported only in next release of the driver. + * Corrects bug in cy_detect_pci and cy_detect_isa that + * returned wrong number of VALID boards, when a cyclomY + * was found with no serial modules connected. + * Changes to use current (2.1.x) kernel subroutine names + * and created macros for compilation with 2.0.x kernel, + * instead of the other way around. + * + * Revision 1.36.4.28 1997/05/?? ??:00:00 bentson + * Change queue_task_irq_off to queue_task_irq. + * The inline function queue_task_irq_off (tqueue.h) + * was removed from latest releases of 2.1.x kernel. + * Use of macro __init to mark the initialization + * routines, so memory can be reused. + * Also incorporate implementation of critical region + * in function cleanup_module() created by anonymous + * linuxer. + * + * Revision 1.36.4.28 1997/04/25 16:00:00 daniel + * Change to support new firmware that solves DCD problem: + * application could fail to receive SIGHUP signal when DCD + * varying too fast. + * + * Revision 1.36.4.27 1997/03/26 10:30:00 daniel + * Changed for support linux versions 2.1.X. + * Backward compatible with linux versions 2.0.X. + * Corrected illegal use of filler field in + * CH_CTRL struct. + * Deleted some debug messages. + * + * Revision 1.36.4.26 1997/02/27 12:00:00 daniel + * Included check for NULL tty pointer in cyz_poll. + * + * Revision 1.36.4.25 1997/02/26 16:28:30 bentson + * Bill Foster at Blarg! Online services noticed that + * some of the switch elements of -Z modem control + * lacked a closing "break;" + * + * Revision 1.36.4.24 1997/02/24 11:00:00 daniel + * Changed low water threshold for buffer xmit_buf + * + * Revision 1.36.4.23 1996/12/02 21:50:16 bentson + * Marcio provided fix to modem status fetch for -Z + * + * Revision 1.36.4.22 1996/10/28 22:41:17 bentson + * improve mapping of -Z control page (thanks to Steve + * Price <stevep@fa.tdktca.com> for help on this) + * + * Revision 1.36.4.21 1996/09/10 17:00:10 bentson + * shift from CPU-bound to memcopy in cyz_polling operation + * + * Revision 1.36.4.20 1996/09/09 18:30:32 Bentson + * Added support to set and report higher speeds. + * + * Revision 1.36.4.19c 1996/08/09 10:00:00 Marcio Saito + * Some fixes in the HW flow control for the BETA release. + * Don't try to register the IRQ. + * + * Revision 1.36.4.19 1996/08/08 16:23:18 Bentson + * make sure "cyc" appears in all kernel messages; all soft interrupts + * handled by same routine; recognize out-of-band reception; comment + * out some diagnostic messages; leave RTS/CTS flow control to hardware; + * fix race condition in -Z buffer management; only -Y needs to explictly + * flush chars; tidy up some startup messages; + * + * Revision 1.36.4.18 1996/07/25 18:57:31 bentson + * shift MOD_INC_USE_COUNT location to match + * serial.c; purge some diagnostic messages; + * + * Revision 1.36.4.17 1996/07/25 18:01:08 bentson + * enable modem status messages and fetch & process them; note + * time of last activity type for each port; set_line_char now + * supports more than line 0 and treats 0 baud correctly; + * get_modem_info senses rs_status; + * + * Revision 1.36.4.16 1996/07/20 08:43:15 bentson + * barely works--now's time to turn on + * more features 'til it breaks + * + * Revision 1.36.4.15 1996/07/19 22:30:06 bentson + * check more -Z board status; shorten boot message + * + * Revision 1.36.4.14 1996/07/19 22:20:37 bentson + * fix reference to ch_ctrl in startup; verify return + * values from cyz_issue_cmd and cyz_update_channel; + * more stuff to get modem control correct; + * + * Revision 1.36.4.13 1996/07/11 19:53:33 bentson + * more -Z stuff folded in; re-order changes to put -Z stuff + * after -Y stuff (to make changes clearer) + * + * Revision 1.36.4.12 1996/07/11 15:40:55 bentson + * Add code to poll Cyclades-Z. Add code to get & set RS-232 control. + * Add code to send break. Clear firmware ID word at startup (so + * that other code won't talk to inactive board). + * + * Revision 1.36.4.11 1996/07/09 05:28:29 bentson + * add code for -Z in set_line_char + * + * Revision 1.36.4.10 1996/07/08 19:28:37 bentson + * fold more -Z stuff (or in some cases, error messages) + * into driver; add text to "don't know what to do" messages. + * + * Revision 1.36.4.9 1996/07/08 18:38:38 bentson + * moved compile-time flags near top of file; cosmetic changes + * to narrow text (to allow 2-up printing); changed many declarations + * to "static" to limit external symbols; shuffled code order to + * coalesce -Y and -Z specific code, also to put internal functions + * in order of tty_driver structure; added code to recognize -Z + * ports (and for moment, do nothing or report error); add cy_startup + * to parse boot command line for extra base addresses for ISA probes; + * + * Revision 1.36.4.8 1996/06/25 17:40:19 bentson + * reorder some code, fix types of some vars (int vs. long), + * add cy_setup to support user declared ISA addresses + * + * Revision 1.36.4.7 1996/06/21 23:06:18 bentson + * dump ioctl based firmware load (it's now a user level + * program); ensure uninitialzed ports cannot be used + * + * Revision 1.36.4.6 1996/06/20 23:17:19 bentson + * rename vars and restructure some code + * + * Revision 1.36.4.5 1996/06/14 15:09:44 bentson + * get right status back after boot load + * + * Revision 1.36.4.4 1996/06/13 19:51:44 bentson + * successfully loads firmware + * + * Revision 1.36.4.3 1996/06/13 06:08:33 bentson + * add more of the code for the boot/load ioctls + * + * Revision 1.36.4.2 1996/06/11 21:00:51 bentson + * start to add Z functionality--starting with ioctl + * for loading firmware + * + * Revision 1.36.4.1 1996/06/10 18:03:02 bentson + * added code to recognize Z/PCI card at initialization; report + * presence, but card is not initialized (because firmware needs + * to be loaded) + * + * Revision 1.36.3.8 1996/06/07 16:29:00 bentson + * starting minor number at zero; added missing verify_area + * as noted by Heiko Eissfeldt <heiko@colossus.escape.de> + * + * Revision 1.36.3.7 1996/04/19 21:06:18 bentson + * remove unneeded boot message & fix CLOCAL hardware flow + * control (Miquel van Smoorenburg <miquels@Q.cistron.nl>); + * remove unused diagnostic statements; minor 0 is first; + * + * Revision 1.36.3.6 1996/03/13 13:21:17 marcio + * The kernel function vremap (available only in later 1.3.xx kernels) + * allows the access to memory addresses above the RAM. This revision + * of the driver supports PCI boards below 1Mb (device id 0x100) and + * above 1Mb (device id 0x101). + * + * Revision 1.36.3.5 1996/03/07 15:20:17 bentson + * Some global changes to interrupt handling spilled into + * this driver--mostly unused arguments in system function + * calls. Also added change by Marcio Saito which should + * reduce lost interrupts at startup by fast processors. + * + * Revision 1.36.3.4 1995/11/13 20:45:10 bentson + * Changes by Corey Minyard <minyard@wf-rch.cirr.com> distributed + * in 1.3.41 kernel to remove a possible race condition, extend + * some error messages, and let the driver run as a loadable module + * Change by Alan Wendt <alan@ez0.ezlink.com> to remove a + * possible race condition. + * Change by Marcio Saito <marcio@cyclades.com> to fix PCI addressing. + * + * Revision 1.36.3.3 1995/11/13 19:44:48 bentson + * Changes by Linus Torvalds in 1.3.33 kernel distribution + * required due to reordering of driver initialization. + * Drivers are now initialized *after* memory management. + * + * Revision 1.36.3.2 1995/09/08 22:07:14 bentson + * remove printk from ISR; fix typo + * + * Revision 1.36.3.1 1995/09/01 12:00:42 marcio + * Minor fixes in the PCI board support. PCI function calls in + * conditional compilation (CONFIG_PCI). Thanks to Jim Duncan + * <duncan@okay.com>. "bad serial count" message removed. + * + * Revision 1.36.3 1995/08/22 09:19:42 marcio + * Cyclom-Y/PCI support added. Changes in the cy_init routine and + * board initialization. Changes in the boot messages. The driver + * supports up to 4 boards and 64 ports by default. + * + * Revision 1.36.1.4 1995/03/29 06:14:14 bentson + * disambiguate between Cyclom-16Y and Cyclom-32Ye; + * + * Revision 1.36.1.3 1995/03/23 22:15:35 bentson + * add missing break in modem control block in ioctl switch statement + * (discovered by Michael Edward Chastain <mec@jobe.shell.portal.com>); + * + * Revision 1.36.1.2 1995/03/22 19:16:22 bentson + * make sure CTS flow control is set as soon as possible (thanks + * to note from David Lambert <lambert@chesapeake.rps.slb.com>); + * + * Revision 1.36.1.1 1995/03/13 15:44:43 bentson + * initialize defaults for receive threshold and stale data timeout; + * cosmetic changes; + * + * Revision 1.36 1995/03/10 23:33:53 bentson + * added support of chips 4-7 in 32 port Cyclom-Ye; + * fix cy_interrupt pointer dereference problem + * (Joe Portman <baron@aa.net>); + * give better error response if open is attempted on non-existent port + * (Zachariah Vaum <jchryslr@netcom.com>); + * correct command timeout (Kenneth Lerman <lerman@@seltd.newnet.com>); + * conditional compilation for -16Y on systems with fast, noisy bus; + * comment out diagnostic print function; + * cleaned up table of base addresses; + * set receiver time-out period register to correct value, + * set receive threshold to better default values, + * set chip timer to more accurate 200 Hz ticking, + * add code to monitor and modify receive parameters + * (Rik Faith <faith@cs.unc.edu> Nick Simicich + * <njs@scifi.emi.net>); + * + * Revision 1.35 1994/12/16 13:54:18 steffen + * additional patch by Marcio Saito for board detection + * Accidently left out in 1.34 + * + * Revision 1.34 1994/12/10 12:37:12 steffen + * This is the corrected version as suggested by Marcio Saito + * + * Revision 1.33 1994/12/01 22:41:18 bentson + * add hooks to support more high speeds directly; add tytso + * patch regarding CLOCAL wakeups + * + * Revision 1.32 1994/11/23 19:50:04 bentson + * allow direct kernel control of higher signalling rates; + * look for cards at additional locations + * + * Revision 1.31 1994/11/16 04:33:28 bentson + * ANOTHER fix from Corey Minyard, minyard@wf-rch.cirr.com-- + * a problem in chars_in_buffer has been resolved by some + * small changes; this should yield smoother output + * + * Revision 1.30 1994/11/16 04:28:05 bentson + * Fix from Corey Minyard, Internet: minyard@metronet.com, + * UUCP: minyard@wf-rch.cirr.com, WORK: minyardbnr.ca, to + * cy_hangup that appears to clear up much (all?) of the + * DTR glitches; also he's added/cleaned-up diagnostic messages + * + * Revision 1.29 1994/11/16 04:16:07 bentson + * add change proposed by Ralph Sims, ralphs@halcyon.com, to + * operate higher speeds in same way as other serial ports; + * add more serial ports (for up to two 16-port muxes). + * + * Revision 1.28 1994/11/04 00:13:16 root + * turn off diagnostic messages + * + * Revision 1.27 1994/11/03 23:46:37 root + * bunch of changes to bring driver into greater conformance + * with the serial.c driver (looking for missed fixes) + * + * Revision 1.26 1994/11/03 22:40:36 root + * automatic interrupt probing fixed. + * + * Revision 1.25 1994/11/03 20:17:02 root + * start to implement auto-irq + * + * Revision 1.24 1994/11/03 18:01:55 root + * still working on modem signals--trying not to drop DTR + * during the getty/login processes + * + * Revision 1.23 1994/11/03 17:51:36 root + * extend baud rate support; set receive threshold as function + * of baud rate; fix some problems with RTS/CTS; + * + * Revision 1.22 1994/11/02 18:05:35 root + * changed arguments to udelay to type long to get + * delays to be of correct duration + * + * Revision 1.21 1994/11/02 17:37:30 root + * employ udelay (after calibrating loops_per_second earlier + * in init/main.c) instead of using home-grown delay routines + * + * Revision 1.20 1994/11/02 03:11:38 root + * cy_chars_in_buffer forces a return value of 0 to let + * login work (don't know why it does); some functions + * that were returning EFAULT, now executes the code; + * more work on deciding when to disable xmit interrupts; + * + * Revision 1.19 1994/11/01 20:10:14 root + * define routine to start transmission interrupts (by enabling + * transmit interrupts); directly enable/disable modem interrupts; + * + * Revision 1.18 1994/11/01 18:40:45 bentson + * Don't always enable transmit interrupts in startup; interrupt on + * TxMpty instead of TxRdy to help characters get out before shutdown; + * restructure xmit interrupt to check for chars first and quit if + * none are ready to go; modem status (MXVRx) is upright, _not_ inverted + * (to my view); + * + * Revision 1.17 1994/10/30 04:39:45 bentson + * rename serial_driver and callout_driver to cy_serial_driver and + * cy_callout_driver to avoid linkage interference; initialize + * info->type to PORT_CIRRUS; ruggedize paranoia test; elide ->port + * from cyclades_port structure; add paranoia check to cy_close; + * + * Revision 1.16 1994/10/30 01:14:33 bentson + * change major numbers; add some _early_ return statements; + * + * Revision 1.15 1994/10/29 06:43:15 bentson + * final tidying up for clean compile; enable some error reporting + * + * Revision 1.14 1994/10/28 20:30:22 Bentson + * lots of changes to drag the driver towards the new tty_io + * structures and operation. not expected to work, but may + * compile cleanly. + * + * Revision 1.13 1994/07/21 23:08:57 Bentson + * add some diagnostic cruft; support 24 lines (for testing + * both -8Y and -16Y cards; be more thorough in servicing all + * chips during interrupt; add "volatile" a few places to + * circumvent compiler optimizations; fix base & offset + * computations in block_til_ready (was causing chip 0 to + * stop operation) + * + * Revision 1.12 1994/07/19 16:42:11 Bentson + * add some hackery for kernel version 1.1.8; expand + * error messages; refine timing for delay loops and + * declare loop params volatile + * + * Revision 1.11 1994/06/11 21:53:10 bentson + * get use of save_car right in transmit interrupt service + * + * Revision 1.10.1.1 1994/06/11 21:31:18 bentson + * add some diagnostic printing; try to fix save_car stuff + * + * Revision 1.10 1994/06/11 20:36:08 bentson + * clean up compiler warnings + * + * Revision 1.9 1994/06/11 19:42:46 bentson + * added a bunch of code to support modem signalling + * + * Revision 1.8 1994/06/11 17:57:07 bentson + * recognize break & parity error + * + * Revision 1.7 1994/06/05 05:51:34 bentson + * Reorder baud table to be monotonic; add cli to CP; discard + * incoming characters and status if the line isn't open; start to + * fold code into cy_throttle; start to port get_serial_info, + * set_serial_info, get_modem_info, set_modem_info, and send_break + * from serial.c; expand cy_ioctl; relocate and expand config_setup; + * get flow control characters from tty struct; invalidate ports w/o + * hardware; + * + * Revision 1.6 1994/05/31 18:42:21 bentson + * add a loop-breaker in the interrupt service routine; + * note when port is initialized so that it can be shut + * down under the right conditions; receive works without + * any obvious errors + * + * Revision 1.5 1994/05/30 00:55:02 bentson + * transmit works without obvious errors + * + * Revision 1.4 1994/05/27 18:46:27 bentson + * incorporated more code from lib_y.c; can now print short + * strings under interrupt control to port zero; seems to + * select ports/channels/lines correctly + * + * Revision 1.3 1994/05/25 22:12:44 bentson + * shifting from multi-port on a card to proper multiplexor + * data structures; added skeletons of most routines + * + * Revision 1.2 1994/05/19 13:21:43 bentson + * start to crib from other sources + * + */ + +/* If you need to install more boards than NR_CARDS, change the constant + in the definition below. No other change is necessary to support up to + eight boards. Beyond that you'll have to extend cy_isa_addresses. */ + +#define NR_CARDS 4 + +/* + If the total number of ports is larger than NR_PORTS, change this + constant in the definition below. No other change is necessary to + support more boards/ports. */ + +#define NR_PORTS 256 + +#define ZE_V1_NPORTS 64 +#define ZO_V1 0 +#define ZO_V2 1 +#define ZE_V1 2 + +#define SERIAL_PARANOIA_CHECK +#undef CY_DEBUG_OPEN +#undef CY_DEBUG_THROTTLE +#undef CY_DEBUG_OTHER +#undef CY_DEBUG_IO +#undef CY_DEBUG_COUNT +#undef CY_DEBUG_DTR +#undef CY_DEBUG_WAIT_UNTIL_SENT +#undef CY_DEBUG_INTERRUPTS +#undef CY_16Y_HACK +#undef CY_ENABLE_MONITORING +#undef CY_PCI_DEBUG + +#if 0 +#define PAUSE __asm__("nop"); +#else +#define PAUSE ; +#endif + +/* + * Include section + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/errno.h> +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/timer.h> +#include <linux/interrupt.h> +#include <linux/tty.h> +#include <linux/serial.h> +#include <linux/major.h> +#include <linux/string.h> +#include <linux/fcntl.h> +#include <linux/ptrace.h> +#include <linux/cyclades.h> +#include <linux/mm.h> +#include <linux/ioport.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/spinlock.h> +#include <linux/bitops.h> + +#include <asm/system.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <asm/uaccess.h> + +#define CY_LOCK(info,flags) \ + do { \ + spin_lock_irqsave(&cy_card[info->card].card_lock, flags); \ + } while (0) + +#define CY_UNLOCK(info,flags) \ + do { \ + spin_unlock_irqrestore(&cy_card[info->card].card_lock, flags); \ + } while (0) + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/pci.h> + +#include <linux/stat.h> +#include <linux/proc_fs.h> + +static void cy_throttle (struct tty_struct *tty); +static void cy_send_xchar (struct tty_struct *tty, char ch); + +#define IS_CYC_Z(card) ((card).num_chips == -1) + +#define Z_FPGA_CHECK(card) \ + ((cy_readl(&((struct RUNTIME_9060 __iomem *) \ + ((card).ctl_addr))->init_ctrl) & (1<<17)) != 0) + +#define ISZLOADED(card) (((ZO_V1==cy_readl(&((struct RUNTIME_9060 __iomem *) \ + ((card).ctl_addr))->mail_box_0)) || \ + Z_FPGA_CHECK(card)) && \ + (ZFIRM_ID==cy_readl(&((struct FIRM_ID __iomem *) \ + ((card).base_addr+ID_ADDRESS))->signature))) + +#ifndef SERIAL_XMIT_SIZE +#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096)) +#endif +#define WAKEUP_CHARS 256 + +#define STD_COM_FLAGS (0) + +#define JIFFIES_DIFF(n, j) ((j) - (n)) + +static struct tty_driver *cy_serial_driver; + +#ifdef CONFIG_ISA +/* This is the address lookup table. The driver will probe for + Cyclom-Y/ISA boards at all addresses in here. If you want the + driver to probe addresses at a different address, add it to + this table. If the driver is probing some other board and + causing problems, remove the offending address from this table. + The cy_setup function extracts additional addresses from the + boot options line. The form is "cyclades=address,address..." +*/ + +static unsigned int cy_isa_addresses[] = { + 0xD0000, + 0xD2000, + 0xD4000, + 0xD6000, + 0xD8000, + 0xDA000, + 0xDC000, + 0xDE000, + 0,0,0,0,0,0,0,0 +}; +#define NR_ISA_ADDRS (sizeof(cy_isa_addresses)/sizeof(unsigned char*)) + +#ifdef MODULE +static long maddr[NR_CARDS] = { 0, }; +static int irq[NR_CARDS] = { 0, }; + +module_param_array(maddr, long, NULL, 0); +module_param_array(irq, int, NULL, 0); +#endif + +#endif /* CONFIG_ISA */ + +/* This is the per-card data structure containing address, irq, number of + channels, etc. This driver supports a maximum of NR_CARDS cards. +*/ +static struct cyclades_card cy_card[NR_CARDS]; + +/* This is the per-channel data structure containing pointers, flags + and variables for the port. This driver supports a maximum of NR_PORTS. +*/ +static struct cyclades_port cy_port[NR_PORTS]; + +static int cy_next_channel; /* next minor available */ + +/* + * tmp_buf is used as a temporary buffer by serial_write. We need to + * lock it in case the copy_from_user blocks while swapping in a page, + * and some other program tries to do a serial write at the same time. + * Since the lock will only come under contention when the system is + * swapping and available memory is low, it makes sense to share one + * buffer across all the serial ports, since it significantly saves + * memory if large numbers of serial ports are open. This buffer is + * allocated when the first cy_open occurs. + */ +static unsigned char *tmp_buf; + +/* + * This is used to look up the divisor speeds and the timeouts + * We're normally limited to 15 distinct baud rates. The extra + * are accessed via settings in info->flags. + * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, + * HI VHI + * 20 + */ +static int baud_table[] = { + 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, + 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800,115200,150000, + 230400, 0}; + +static char baud_co_25[] = { /* 25 MHz clock option table */ + /* value => 00 01 02 03 04 */ + /* divide by 8 32 128 512 2048 */ + 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02, + 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +static char baud_bpr_25[] = { /* 25 MHz baud rate period table */ + 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3, + 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15}; + +static char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */ + /* value => 00 01 02 03 04 */ + /* divide by 8 32 128 512 2048 */ + 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, + 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00}; + +static char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */ + 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62, + 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32, + 0x21}; + +static char baud_cor3[] = { /* receive threshold */ + 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, + 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07, + 0x07}; + +/* + * The Cyclades driver implements HW flow control as any serial driver. + * The cyclades_port structure member rflow and the vector rflow_thr + * allows us to take advantage of a special feature in the CD1400 to avoid + * data loss even when the system interrupt latency is too high. These flags + * are to be used only with very special applications. Setting these flags + * requires the use of a special cable (DTR and RTS reversed). In the new + * CD1400-based boards (rev. 6.00 or later), there is no need for special + * cables. + */ + +static char rflow_thr[] = { /* rflow threshold */ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, + 0x0a}; + +/* The Cyclom-Ye has placed the sequential chips in non-sequential + * address order. This look-up table overcomes that problem. + */ +static int cy_chip_offset [] = + { 0x0000, + 0x0400, + 0x0800, + 0x0C00, + 0x0200, + 0x0600, + 0x0A00, + 0x0E00 + }; + +/* PCI related definitions */ + +static unsigned short cy_pci_nboard; +static unsigned short cy_isa_nboard; +static unsigned short cy_nboard; +#ifdef CONFIG_PCI +static unsigned short cy_pci_dev_id[] = { + PCI_DEVICE_ID_CYCLOM_Y_Lo, /* PCI < 1Mb */ + PCI_DEVICE_ID_CYCLOM_Y_Hi, /* PCI > 1Mb */ + PCI_DEVICE_ID_CYCLOM_4Y_Lo, /* 4Y PCI < 1Mb */ + PCI_DEVICE_ID_CYCLOM_4Y_Hi, /* 4Y PCI > 1Mb */ + PCI_DEVICE_ID_CYCLOM_8Y_Lo, /* 8Y PCI < 1Mb */ + PCI_DEVICE_ID_CYCLOM_8Y_Hi, /* 8Y PCI > 1Mb */ + PCI_DEVICE_ID_CYCLOM_Z_Lo, /* Z PCI < 1Mb */ + PCI_DEVICE_ID_CYCLOM_Z_Hi, /* Z PCI > 1Mb */ + 0 /* end of table */ + }; +#endif + +static void cy_start(struct tty_struct *); +static void set_line_char(struct cyclades_port *); +static int cyz_issue_cmd(struct cyclades_card *, uclong, ucchar, uclong); +#ifdef CONFIG_ISA +static unsigned detect_isa_irq(void __iomem *); +#endif /* CONFIG_ISA */ + +static int cyclades_get_proc_info(char *, char **, off_t , int , int *, void *); + +#ifndef CONFIG_CYZ_INTR +static void cyz_poll(unsigned long); + +/* The Cyclades-Z polling cycle is defined by this variable */ +static long cyz_polling_cycle = CZ_DEF_POLL; + +static int cyz_timeron = 0; +static struct timer_list cyz_timerlist = TIMER_INITIALIZER(cyz_poll, 0, 0); + +#else /* CONFIG_CYZ_INTR */ +static void cyz_rx_restart(unsigned long); +static struct timer_list cyz_rx_full_timer[NR_PORTS]; +#endif /* CONFIG_CYZ_INTR */ + +static inline int +serial_paranoia_check(struct cyclades_port *info, + char *name, const char *routine) +{ +#ifdef SERIAL_PARANOIA_CHECK + static const char *badmagic = + "cyc Warning: bad magic number for serial struct (%s) in %s\n"; + static const char *badinfo = + "cyc Warning: null cyclades_port for (%s) in %s\n"; + static const char *badrange = + "cyc Warning: cyclades_port out of range for (%s) in %s\n"; + + if (!info) { + printk(badinfo, name, routine); + return 1; + } + + if( (long)info < (long)(&cy_port[0]) + || (long)(&cy_port[NR_PORTS]) < (long)info ){ + printk(badrange, name, routine); + return 1; + } + + if (info->magic != CYCLADES_MAGIC) { + printk(badmagic, name, routine); + return 1; + } +#endif + return 0; +} /* serial_paranoia_check */ + +/* + * This routine is used by the interrupt handler to schedule + * processing in the software interrupt portion of the driver + * (also known as the "bottom half"). This can be called any + * number of times for any channel without harm. + */ +static inline void +cy_sched_event(struct cyclades_port *info, int event) +{ + info->event |= 1 << event; /* remember what kind of event and who */ + schedule_work(&info->tqueue); +} /* cy_sched_event */ + + +/* + * This routine is used to handle the "bottom half" processing for the + * serial driver, known also the "software interrupt" processing. + * This processing is done at the kernel interrupt level, after the + * cy#/_interrupt() has returned, BUT WITH INTERRUPTS TURNED ON. This + * is where time-consuming activities which can not be done in the + * interrupt driver proper are done; the interrupt driver schedules + * them using cy_sched_event(), and they get done here. + * + * This is done through one level of indirection--the task queue. + * When a hardware interrupt service routine wants service by the + * driver's bottom half, it enqueues the appropriate tq_struct (one + * per port) to the keventd work queue and sets a request flag + * that the work queue be processed. + * + * Although this may seem unwieldy, it gives the system a way to + * pass an argument (in this case the pointer to the cyclades_port + * structure) to the bottom half of the driver. Previous kernels + * had to poll every port to see if that port needed servicing. + */ +static void +do_softint(void *private_) +{ + struct cyclades_port *info = (struct cyclades_port *) private_; + struct tty_struct *tty; + + tty = info->tty; + if (!tty) + return; + + if (test_and_clear_bit(Cy_EVENT_HANGUP, &info->event)) { + tty_hangup(info->tty); + wake_up_interruptible(&info->open_wait); + info->flags &= ~ASYNC_NORMAL_ACTIVE; + } + if (test_and_clear_bit(Cy_EVENT_OPEN_WAKEUP, &info->event)) { + wake_up_interruptible(&info->open_wait); + } +#ifdef CONFIG_CYZ_INTR + if (test_and_clear_bit(Cy_EVENT_Z_RX_FULL, &info->event)) { + if (cyz_rx_full_timer[info->line].function == NULL) { + cyz_rx_full_timer[info->line].expires = jiffies + 1; + cyz_rx_full_timer[info->line].function = cyz_rx_restart; + cyz_rx_full_timer[info->line].data = (unsigned long)info; + add_timer(&cyz_rx_full_timer[info->line]); + } + } +#endif + if (test_and_clear_bit(Cy_EVENT_DELTA_WAKEUP, &info->event)) { + wake_up_interruptible(&info->delta_msr_wait); + } + if (test_and_clear_bit(Cy_EVENT_WRITE_WAKEUP, &info->event)) { + tty_wakeup(tty); + wake_up_interruptible(&tty->write_wait); + } +#ifdef Z_WAKE + if (test_and_clear_bit(Cy_EVENT_SHUTDOWN_WAKEUP, &info->event)) { + wake_up_interruptible(&info->shutdown_wait); + } +#endif +} /* do_softint */ + + +/***********************************************************/ +/********* Start of block of Cyclom-Y specific code ********/ + +/* This routine waits up to 1000 micro-seconds for the previous + command to the Cirrus chip to complete and then issues the + new command. An error is returned if the previous command + didn't finish within the time limit. + + This function is only called from inside spinlock-protected code. + */ +static int +cyy_issue_cmd(void __iomem *base_addr, u_char cmd, int index) +{ + volatile int i; + + /* Check to see that the previous command has completed */ + for(i = 0 ; i < 100 ; i++){ + if (cy_readb(base_addr+(CyCCR<<index)) == 0){ + break; + } + udelay(10L); + } + /* if the CCR never cleared, the previous command + didn't finish within the "reasonable time" */ + if (i == 100) return (-1); + + /* Issue the new command */ + cy_writeb(base_addr+(CyCCR<<index), cmd); + + return(0); +} /* cyy_issue_cmd */ + +#ifdef CONFIG_ISA +/* ISA interrupt detection code */ +static unsigned +detect_isa_irq(void __iomem *address) +{ + int irq; + unsigned long irqs, flags; + int save_xir, save_car; + int index = 0; /* IRQ probing is only for ISA */ + + /* forget possible initially masked and pending IRQ */ + irq = probe_irq_off(probe_irq_on()); + + /* Clear interrupts on the board first */ + cy_writeb(address + (Cy_ClrIntr<<index), 0); + /* Cy_ClrIntr is 0x1800 */ + + irqs = probe_irq_on(); + /* Wait ... */ + udelay(5000L); + + /* Enable the Tx interrupts on the CD1400 */ + local_irq_save(flags); + cy_writeb(address + (CyCAR<<index), 0); + cyy_issue_cmd(address, CyCHAN_CTL|CyENB_XMTR, index); + + cy_writeb(address + (CyCAR<<index), 0); + cy_writeb(address + (CySRER<<index), + cy_readb(address + (CySRER<<index)) | CyTxRdy); + local_irq_restore(flags); + + /* Wait ... */ + udelay(5000L); + + /* Check which interrupt is in use */ + irq = probe_irq_off(irqs); + + /* Clean up */ + save_xir = (u_char) cy_readb(address + (CyTIR<<index)); + save_car = cy_readb(address + (CyCAR<<index)); + cy_writeb(address + (CyCAR<<index), (save_xir & 0x3)); + cy_writeb(address + (CySRER<<index), + cy_readb(address + (CySRER<<index)) & ~CyTxRdy); + cy_writeb(address + (CyTIR<<index), (save_xir & 0x3f)); + cy_writeb(address + (CyCAR<<index), (save_car)); + cy_writeb(address + (Cy_ClrIntr<<index), 0); + /* Cy_ClrIntr is 0x1800 */ + + return (irq > 0)? irq : 0; +} +#endif /* CONFIG_ISA */ + +/* The real interrupt service routine is called + whenever the card wants its hand held--chars + received, out buffer empty, modem change, etc. + */ +static irqreturn_t +cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct tty_struct *tty; + int status; + struct cyclades_card *cinfo; + struct cyclades_port *info; + void __iomem *base_addr, *card_base_addr; + int chip; + int save_xir, channel, save_car; + char data; + volatile int char_count; + int outch; + int i,j,index; + int too_many; + int had_work; + int mdm_change; + int mdm_status; + + if((cinfo = (struct cyclades_card *)dev_id) == 0){ +#ifdef CY_DEBUG_INTERRUPTS + printk("cyy_interrupt: spurious interrupt %d\n\r", irq); +#endif + return IRQ_NONE; /* spurious interrupt */ + } + + card_base_addr = cinfo->base_addr; + index = cinfo->bus_index; + + + /* This loop checks all chips in the card. Make a note whenever + _any_ chip had some work to do, as this is considered an + indication that there will be more to do. Only when no chip + has any work does this outermost loop exit. + */ + do{ + had_work = 0; + for ( chip = 0 ; chip < cinfo->num_chips ; chip ++) { + base_addr = cinfo->base_addr + (cy_chip_offset[chip]<<index); + too_many = 0; + while ( (status = cy_readb(base_addr+(CySVRR<<index))) != 0x00) { + had_work++; + /* The purpose of the following test is to ensure that + no chip can monopolize the driver. This forces the + chips to be checked in a round-robin fashion (after + draining each of a bunch (1000) of characters). + */ + if(1000<too_many++){ + break; + } + if (status & CySRReceive) { /* reception interrupt */ +#ifdef CY_DEBUG_INTERRUPTS + printk("cyy_interrupt: rcvd intr, chip %d\n\r", chip); +#endif + /* determine the channel & change to that context */ + spin_lock(&cinfo->card_lock); + save_xir = (u_char) cy_readb(base_addr+(CyRIR<<index)); + channel = (u_short ) (save_xir & CyIRChannel); + i = channel + chip * 4 + cinfo->first_line; + info = &cy_port[i]; + info->last_active = jiffies; + save_car = cy_readb(base_addr+(CyCAR<<index)); + cy_writeb(base_addr+(CyCAR<<index), save_xir); + + /* if there is nowhere to put the data, discard it */ + if(info->tty == 0){ + j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask); + if ( j == CyIVRRxEx ) { /* exception */ + data = cy_readb(base_addr+(CyRDSR<<index)); + } else { /* normal character reception */ + char_count = cy_readb(base_addr+(CyRDCR<<index)); + while(char_count--){ + data = cy_readb(base_addr+(CyRDSR<<index)); + } + } + }else{ /* there is an open port for this data */ + tty = info->tty; + j = (cy_readb(base_addr+(CyRIVR<<index)) & CyIVRMask); + if ( j == CyIVRRxEx ) { /* exception */ + data = cy_readb(base_addr+(CyRDSR<<index)); + + /* For statistics only */ + if (data & CyBREAK) + info->icount.brk++; + else if(data & CyFRAME) + info->icount.frame++; + else if(data & CyPARITY) + info->icount.parity++; + else if(data & CyOVERRUN) + info->icount.overrun++; + + if(data & info->ignore_status_mask){ + info->icount.rx++; + continue; + } + if (tty->flip.count < TTY_FLIPBUF_SIZE){ + tty->flip.count++; + if (data & info->read_status_mask){ + if(data & CyBREAK){ + *tty->flip.flag_buf_ptr++ = + TTY_BREAK; + *tty->flip.char_buf_ptr++ = + cy_readb(base_addr+(CyRDSR<<index)); + info->icount.rx++; + if (info->flags & ASYNC_SAK){ + do_SAK(tty); + } + }else if(data & CyFRAME){ + *tty->flip.flag_buf_ptr++ = + TTY_FRAME; + *tty->flip.char_buf_ptr++ = + cy_readb(base_addr+(CyRDSR<<index)); + info->icount.rx++; + info->idle_stats.frame_errs++; + }else if(data & CyPARITY){ + *tty->flip.flag_buf_ptr++ = + TTY_PARITY; + *tty->flip.char_buf_ptr++ = + cy_readb(base_addr+(CyRDSR<<index)); + info->icount.rx++; + info->idle_stats.parity_errs++; + }else if(data & CyOVERRUN){ + *tty->flip.flag_buf_ptr++ = + TTY_OVERRUN; + *tty->flip.char_buf_ptr++ = 0; + info->icount.rx++; + /* If the flip buffer itself is + overflowing, we still lose + the next incoming character. + */ + if(tty->flip.count + < TTY_FLIPBUF_SIZE){ + tty->flip.count++; + *tty->flip.flag_buf_ptr++ = + TTY_NORMAL; + *tty->flip.char_buf_ptr++ = + cy_readb(base_addr+(CyRDSR<<index)); + info->icount.rx++; + } + info->idle_stats.overruns++; + /* These two conditions may imply */ + /* a normal read should be done. */ + /* }else if(data & CyTIMEOUT){ */ + /* }else if(data & CySPECHAR){ */ + }else{ + *tty->flip.flag_buf_ptr++ = 0; + *tty->flip.char_buf_ptr++ = 0; + info->icount.rx++; + } + }else{ + *tty->flip.flag_buf_ptr++ = 0; + *tty->flip.char_buf_ptr++ = 0; + info->icount.rx++; + } + }else{ + /* there was a software buffer + overrun and nothing could be + done about it!!! */ + info->icount.buf_overrun++; + info->idle_stats.overruns++; + } + } else { /* normal character reception */ + /* load # chars available from the chip */ + char_count = cy_readb(base_addr+(CyRDCR<<index)); + +#ifdef CY_ENABLE_MONITORING + ++info->mon.int_count; + info->mon.char_count += char_count; + if (char_count > info->mon.char_max) + info->mon.char_max = char_count; + info->mon.char_last = char_count; +#endif + while(char_count--){ + if (tty->flip.count >= TTY_FLIPBUF_SIZE){ + break; + } + tty->flip.count++; + data = cy_readb(base_addr+(CyRDSR<<index)); + *tty->flip.flag_buf_ptr++ = TTY_NORMAL; + *tty->flip.char_buf_ptr++ = data; + info->idle_stats.recv_bytes++; + info->icount.rx++; +#ifdef CY_16Y_HACK + udelay(10L); +#endif + } + info->idle_stats.recv_idle = jiffies; + } + schedule_delayed_work(&tty->flip.work, 1); + } + /* end of service */ + cy_writeb(base_addr+(CyRIR<<index), (save_xir & 0x3f)); + cy_writeb(base_addr+(CyCAR<<index), (save_car)); + spin_unlock(&cinfo->card_lock); + } + + + if (status & CySRTransmit) { /* transmission interrupt */ + /* Since we only get here when the transmit buffer + is empty, we know we can always stuff a dozen + characters. */ +#ifdef CY_DEBUG_INTERRUPTS + printk("cyy_interrupt: xmit intr, chip %d\n\r", chip); +#endif + + /* determine the channel & change to that context */ + spin_lock(&cinfo->card_lock); + save_xir = (u_char) cy_readb(base_addr+(CyTIR<<index)); + channel = (u_short ) (save_xir & CyIRChannel); + i = channel + chip * 4 + cinfo->first_line; + save_car = cy_readb(base_addr+(CyCAR<<index)); + cy_writeb(base_addr+(CyCAR<<index), save_xir); + + /* validate the port# (as configured and open) */ + if( (i < 0) || (NR_PORTS <= i) ){ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy); + goto txend; + } + info = &cy_port[i]; + info->last_active = jiffies; + if(info->tty == 0){ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy); + goto txdone; + } + + /* load the on-chip space for outbound data */ + char_count = info->xmit_fifo_size; + + if(info->x_char) { /* send special char */ + outch = info->x_char; + cy_writeb(base_addr+(CyTDR<<index), outch); + char_count--; + info->icount.tx++; + info->x_char = 0; + } + + if (info->breakon || info->breakoff) { + if (info->breakon) { + cy_writeb(base_addr + (CyTDR<<index), 0); + cy_writeb(base_addr + (CyTDR<<index), 0x81); + info->breakon = 0; + char_count -= 2; + } + if (info->breakoff) { + cy_writeb(base_addr + (CyTDR<<index), 0); + cy_writeb(base_addr + (CyTDR<<index), 0x83); + info->breakoff = 0; + char_count -= 2; + } + } + + while (char_count-- > 0){ + if (!info->xmit_cnt){ + if (cy_readb(base_addr+(CySRER<<index))&CyTxMpty) { + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & + ~CyTxMpty); + } else { + cy_writeb(base_addr+(CySRER<<index), + ((cy_readb(base_addr+(CySRER<<index)) + & ~CyTxRdy) + | CyTxMpty)); + } + goto txdone; + } + if (info->xmit_buf == 0){ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & + ~CyTxRdy); + goto txdone; + } + if (info->tty->stopped || info->tty->hw_stopped){ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & + ~CyTxRdy); + goto txdone; + } + /* Because the Embedded Transmit Commands have + been enabled, we must check to see if the + escape character, NULL, is being sent. If it + is, we must ensure that there is room for it + to be doubled in the output stream. Therefore + we no longer advance the pointer when the + character is fetched, but rather wait until + after the check for a NULL output character. + This is necessary because there may not be + room for the two chars needed to send a NULL.) + */ + outch = info->xmit_buf[info->xmit_tail]; + if( outch ){ + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) + & (SERIAL_XMIT_SIZE - 1); + cy_writeb(base_addr+(CyTDR<<index), outch); + info->icount.tx++; + }else{ + if(char_count > 1){ + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) + & (SERIAL_XMIT_SIZE - 1); + cy_writeb(base_addr+(CyTDR<<index), + outch); + cy_writeb(base_addr+(CyTDR<<index), 0); + info->icount.tx++; + char_count--; + }else{ + } + } + } + + txdone: + if (info->xmit_cnt < WAKEUP_CHARS) { + cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); + } + txend: + /* end of service */ + cy_writeb(base_addr+(CyTIR<<index), + (save_xir & 0x3f)); + cy_writeb(base_addr+(CyCAR<<index), (save_car)); + spin_unlock(&cinfo->card_lock); + } + + if (status & CySRModem) { /* modem interrupt */ + + /* determine the channel & change to that context */ + spin_lock(&cinfo->card_lock); + save_xir = (u_char) cy_readb(base_addr+(CyMIR<<index)); + channel = (u_short ) (save_xir & CyIRChannel); + info = &cy_port[channel + chip * 4 + + cinfo->first_line]; + info->last_active = jiffies; + save_car = cy_readb(base_addr+(CyCAR<<index)); + cy_writeb(base_addr+(CyCAR<<index), save_xir); + + mdm_change = cy_readb(base_addr+(CyMISR<<index)); + mdm_status = cy_readb(base_addr+(CyMSVR1<<index)); + + if(info->tty == 0){/* no place for data, ignore it*/ + ; + }else{ + if (mdm_change & CyANY_DELTA) { + /* For statistics only */ + if (mdm_change & CyDCD) info->icount.dcd++; + if (mdm_change & CyCTS) info->icount.cts++; + if (mdm_change & CyDSR) info->icount.dsr++; + if (mdm_change & CyRI) info->icount.rng++; + + cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); + } + + if((mdm_change & CyDCD) + && (info->flags & ASYNC_CHECK_CD)){ + if(mdm_status & CyDCD){ + cy_sched_event(info, + Cy_EVENT_OPEN_WAKEUP); + }else{ + cy_sched_event(info, + Cy_EVENT_HANGUP); + } + } + if((mdm_change & CyCTS) + && (info->flags & ASYNC_CTS_FLOW)){ + if(info->tty->hw_stopped){ + if(mdm_status & CyCTS){ + /* cy_start isn't used + because... !!! */ + info->tty->hw_stopped = 0; + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) | + CyTxRdy); + cy_sched_event(info, + Cy_EVENT_WRITE_WAKEUP); + } + }else{ + if(!(mdm_status & CyCTS)){ + /* cy_stop isn't used + because ... !!! */ + info->tty->hw_stopped = 1; + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & + ~CyTxRdy); + } + } + } + if(mdm_change & CyDSR){ + } + if(mdm_change & CyRI){ + } + } + /* end of service */ + cy_writeb(base_addr+(CyMIR<<index), + (save_xir & 0x3f)); + cy_writeb(base_addr+(CyCAR<<index), save_car); + spin_unlock(&cinfo->card_lock); + } + } /* end while status != 0 */ + } /* end loop for chips... */ + } while(had_work); + + /* clear interrupts */ + spin_lock(&cinfo->card_lock); + cy_writeb(card_base_addr + (Cy_ClrIntr<<index), 0); + /* Cy_ClrIntr is 0x1800 */ + spin_unlock(&cinfo->card_lock); + return IRQ_HANDLED; +} /* cyy_interrupt */ + +/***********************************************************/ +/********* End of block of Cyclom-Y specific code **********/ +/******** Start of block of Cyclades-Z specific code *********/ +/***********************************************************/ + +static int +cyz_fetch_msg( struct cyclades_card *cinfo, + uclong *channel, ucchar *cmd, uclong *param) +{ + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + unsigned long loc_doorbell; + + firm_id = cinfo->base_addr + ID_ADDRESS; + if (!ISZLOADED(*cinfo)){ + return (-1); + } + zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + + loc_doorbell = cy_readl(&((struct RUNTIME_9060 __iomem *) + (cinfo->ctl_addr))->loc_doorbell); + if (loc_doorbell){ + *cmd = (char)(0xff & loc_doorbell); + *channel = cy_readl(&board_ctrl->fwcmd_channel); + *param = (uclong)cy_readl(&board_ctrl->fwcmd_param); + cy_writel(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->loc_doorbell, + 0xffffffff); + return 1; + } + return 0; +} /* cyz_fetch_msg */ + +static int +cyz_issue_cmd( struct cyclades_card *cinfo, + uclong channel, ucchar cmd, uclong param) +{ + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + unsigned long __iomem *pci_doorbell; + int index; + + firm_id = cinfo->base_addr + ID_ADDRESS; + if (!ISZLOADED(*cinfo)){ + return (-1); + } + zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + + index = 0; + pci_doorbell = &((struct RUNTIME_9060 __iomem *) (cinfo->ctl_addr))->pci_doorbell; + while( (cy_readl(pci_doorbell) & 0xff) != 0){ + if (index++ == 1000){ + return((int)(cy_readl(pci_doorbell) & 0xff)); + } + udelay(50L); + } + cy_writel(&board_ctrl->hcmd_channel, channel); + cy_writel(&board_ctrl->hcmd_param , param); + cy_writel(pci_doorbell, (long)cmd); + + return(0); +} /* cyz_issue_cmd */ + +static void +cyz_handle_rx(struct cyclades_port *info, + volatile struct CH_CTRL __iomem *ch_ctrl, + volatile struct BUF_CTRL __iomem *buf_ctrl) +{ + struct cyclades_card *cinfo = &cy_card[info->card]; + struct tty_struct *tty = info->tty; + volatile int char_count; +#ifdef BLOCKMOVE + int small_count; +#else + char data; +#endif + volatile uclong rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr; + + rx_get = new_rx_get = cy_readl(&buf_ctrl->rx_get); + rx_put = cy_readl(&buf_ctrl->rx_put); + rx_bufsize = cy_readl(&buf_ctrl->rx_bufsize); + rx_bufaddr = cy_readl(&buf_ctrl->rx_bufaddr); + if (rx_put >= rx_get) + char_count = rx_put - rx_get; + else + char_count = rx_put - rx_get + rx_bufsize; + + if ( char_count ) { + info->last_active = jiffies; + info->jiffies[1] = jiffies; + +#ifdef CY_ENABLE_MONITORING + info->mon.int_count++; + info->mon.char_count += char_count; + if (char_count > info->mon.char_max) + info->mon.char_max = char_count; + info->mon.char_last = char_count; +#endif + if(tty == 0){ + /* flush received characters */ + new_rx_get = (new_rx_get + char_count) & (rx_bufsize - 1); + info->rflush_count++; + }else{ +#ifdef BLOCKMOVE + /* we'd like to use memcpy(t, f, n) and memset(s, c, count) + for performance, but because of buffer boundaries, there + may be several steps to the operation */ + while(0 < (small_count = + min_t(unsigned int, (rx_bufsize - new_rx_get), + min_t(unsigned int, (TTY_FLIPBUF_SIZE - tty->flip.count), char_count)) + )) { + memcpy_fromio(tty->flip.char_buf_ptr, + (char *)(cinfo->base_addr + + rx_bufaddr + new_rx_get), + small_count); + + tty->flip.char_buf_ptr += small_count; + memset(tty->flip.flag_buf_ptr, TTY_NORMAL, small_count); + tty->flip.flag_buf_ptr += small_count; + new_rx_get = (new_rx_get + small_count) & (rx_bufsize - 1); + char_count -= small_count; + info->icount.rx += small_count; + info->idle_stats.recv_bytes += small_count; + tty->flip.count += small_count; + } +#else + while(char_count--){ + if (tty->flip.count >= N_TTY_BUF_SIZE - tty->read_cnt) + break; + + if (tty->flip.count >= TTY_FLIPBUF_SIZE) + break; + + data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get); + new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1); + tty->flip.count++; + *tty->flip.flag_buf_ptr++ = TTY_NORMAL; + *tty->flip.char_buf_ptr++ = data; + info->idle_stats.recv_bytes++; + info->icount.rx++; + } +#endif +#ifdef CONFIG_CYZ_INTR + /* Recalculate the number of chars in the RX buffer and issue + a cmd in case it's higher than the RX high water mark */ + rx_put = cy_readl(&buf_ctrl->rx_put); + if (rx_put >= rx_get) + char_count = rx_put - rx_get; + else + char_count = rx_put - rx_get + rx_bufsize; + if(char_count >= cy_readl(&buf_ctrl->rx_threshold)) { + cy_sched_event(info, Cy_EVENT_Z_RX_FULL); + } +#endif + info->idle_stats.recv_idle = jiffies; + schedule_delayed_work(&tty->flip.work, 1); + } + /* Update rx_get */ + cy_writel(&buf_ctrl->rx_get, new_rx_get); + } +} + +static void +cyz_handle_tx(struct cyclades_port *info, + volatile struct CH_CTRL __iomem *ch_ctrl, + volatile struct BUF_CTRL __iomem *buf_ctrl) +{ + struct cyclades_card *cinfo = &cy_card[info->card]; + struct tty_struct *tty = info->tty; + char data; + volatile int char_count; +#ifdef BLOCKMOVE + int small_count; +#endif + volatile uclong tx_put, tx_get, tx_bufsize, tx_bufaddr; + + if (info->xmit_cnt <= 0) /* Nothing to transmit */ + return; + + tx_get = cy_readl(&buf_ctrl->tx_get); + tx_put = cy_readl(&buf_ctrl->tx_put); + tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize); + tx_bufaddr = cy_readl(&buf_ctrl->tx_bufaddr); + if (tx_put >= tx_get) + char_count = tx_get - tx_put - 1 + tx_bufsize; + else + char_count = tx_get - tx_put - 1; + + if ( char_count ) { + + if( tty == 0 ){ + goto ztxdone; + } + + if(info->x_char) { /* send special char */ + data = info->x_char; + + cy_writeb((cinfo->base_addr + tx_bufaddr + tx_put), data); + tx_put = (tx_put + 1) & (tx_bufsize - 1); + info->x_char = 0; + char_count--; + info->icount.tx++; + info->last_active = jiffies; + info->jiffies[2] = jiffies; + } +#ifdef BLOCKMOVE + while(0 < (small_count = + min_t(unsigned int, (tx_bufsize - tx_put), + min_t(unsigned int, (SERIAL_XMIT_SIZE - info->xmit_tail), + min_t(unsigned int, info->xmit_cnt, char_count))))) { + + memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put), + &info->xmit_buf[info->xmit_tail], + small_count); + + tx_put = (tx_put + small_count) & (tx_bufsize - 1); + char_count -= small_count; + info->icount.tx += small_count; + info->xmit_cnt -= small_count; + info->xmit_tail = + (info->xmit_tail + small_count) & (SERIAL_XMIT_SIZE - 1); + info->last_active = jiffies; + info->jiffies[2] = jiffies; + } +#else + while (info->xmit_cnt && char_count){ + data = info->xmit_buf[info->xmit_tail]; + info->xmit_cnt--; + info->xmit_tail = (info->xmit_tail + 1) & (SERIAL_XMIT_SIZE - 1); + + cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data); + tx_put = (tx_put + 1) & (tx_bufsize - 1); + char_count--; + info->icount.tx++; + info->last_active = jiffies; + info->jiffies[2] = jiffies; + } +#endif + ztxdone: + if (info->xmit_cnt < WAKEUP_CHARS) { + cy_sched_event(info, Cy_EVENT_WRITE_WAKEUP); + } + /* Update tx_put */ + cy_writel(&buf_ctrl->tx_put, tx_put); + } +} + +static void +cyz_handle_cmd(struct cyclades_card *cinfo) +{ + struct tty_struct *tty; + struct cyclades_port *info; + static volatile struct FIRM_ID __iomem *firm_id; + static volatile struct ZFW_CTRL __iomem *zfw_ctrl; + static volatile struct BOARD_CTRL __iomem *board_ctrl; + static volatile struct CH_CTRL __iomem *ch_ctrl; + static volatile struct BUF_CTRL __iomem *buf_ctrl; + uclong channel; + ucchar cmd; + uclong param; + uclong hw_ver, fw_ver; + int special_count; + int delta_count; + + firm_id = cinfo->base_addr + ID_ADDRESS; + zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + fw_ver = cy_readl(&board_ctrl->fw_version); + hw_ver = cy_readl(&((struct RUNTIME_9060 __iomem *)(cinfo->ctl_addr))->mail_box_0); + + + while(cyz_fetch_msg(cinfo, &channel, &cmd, ¶m) == 1) { + special_count = 0; + delta_count = 0; + info = &cy_port[channel + cinfo->first_line]; + if((tty = info->tty) == 0) { + continue; + } + ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); + buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); + + switch(cmd) { + case C_CM_PR_ERROR: + tty->flip.count++; + *tty->flip.flag_buf_ptr++ = TTY_PARITY; + *tty->flip.char_buf_ptr++ = 0; + info->icount.rx++; + special_count++; + break; + case C_CM_FR_ERROR: + tty->flip.count++; + *tty->flip.flag_buf_ptr++ = TTY_FRAME; + *tty->flip.char_buf_ptr++ = 0; + info->icount.rx++; + special_count++; + break; + case C_CM_RXBRK: + tty->flip.count++; + *tty->flip.flag_buf_ptr++ = TTY_BREAK; + *tty->flip.char_buf_ptr++ = 0; + info->icount.rx++; + special_count++; + break; + case C_CM_MDCD: + info->icount.dcd++; + delta_count++; + if (info->flags & ASYNC_CHECK_CD){ + if ((fw_ver > 241 ? + ((u_long)param) : + cy_readl(&ch_ctrl->rs_status)) & C_RS_DCD) { + cy_sched_event(info, Cy_EVENT_OPEN_WAKEUP); + }else{ + cy_sched_event(info, Cy_EVENT_HANGUP); + } + } + break; + case C_CM_MCTS: + info->icount.cts++; + delta_count++; + break; + case C_CM_MRI: + info->icount.rng++; + delta_count++; + break; + case C_CM_MDSR: + info->icount.dsr++; + delta_count++; + break; +#ifdef Z_WAKE + case C_CM_IOCTLW: + cy_sched_event(info, Cy_EVENT_SHUTDOWN_WAKEUP); + break; +#endif +#ifdef CONFIG_CYZ_INTR + case C_CM_RXHIWM: + case C_CM_RXNNDT: + case C_CM_INTBACK2: + /* Reception Interrupt */ +#ifdef CY_DEBUG_INTERRUPTS + printk("cyz_interrupt: rcvd intr, card %d, port %ld\n\r", + info->card, channel); +#endif + cyz_handle_rx(info, ch_ctrl, buf_ctrl); + break; + case C_CM_TXBEMPTY: + case C_CM_TXLOWWM: + case C_CM_INTBACK: + /* Transmission Interrupt */ +#ifdef CY_DEBUG_INTERRUPTS + printk("cyz_interrupt: xmit intr, card %d, port %ld\n\r", + info->card, channel); +#endif + cyz_handle_tx(info, ch_ctrl, buf_ctrl); + break; +#endif /* CONFIG_CYZ_INTR */ + case C_CM_FATAL: + /* should do something with this !!! */ + break; + default: + break; + } + if(delta_count) + cy_sched_event(info, Cy_EVENT_DELTA_WAKEUP); + if(special_count) + schedule_delayed_work(&tty->flip.work, 1); + } +} + +#ifdef CONFIG_CYZ_INTR +static irqreturn_t +cyz_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct cyclades_card *cinfo; + + if((cinfo = (struct cyclades_card *)dev_id) == 0){ +#ifdef CY_DEBUG_INTERRUPTS + printk("cyz_interrupt: spurious interrupt %d\n\r", irq); +#endif + return IRQ_NONE; /* spurious interrupt */ + } + + if (!ISZLOADED(*cinfo)) { +#ifdef CY_DEBUG_INTERRUPTS + printk("cyz_interrupt: board not yet loaded (IRQ%d).\n\r", irq); +#endif + return IRQ_NONE; + } + + /* Handle the interrupts */ + cyz_handle_cmd(cinfo); + + return IRQ_HANDLED; +} /* cyz_interrupt */ + +static void +cyz_rx_restart(unsigned long arg) +{ + struct cyclades_port *info = (struct cyclades_port *)arg; + int retval; + int card = info->card; + uclong channel = (info->line) - (cy_card[card].first_line); + unsigned long flags; + + CY_LOCK(info, flags); + retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK2, 0L); + if (retval != 0){ + printk("cyc:cyz_rx_restart retval on ttyC%d was %x\n", + info->line, retval); + } + cyz_rx_full_timer[info->line].function = NULL; + CY_UNLOCK(info, flags); +} + +#else /* CONFIG_CYZ_INTR */ + +static void +cyz_poll(unsigned long arg) +{ + struct cyclades_card *cinfo; + struct cyclades_port *info; + struct tty_struct *tty; + static volatile struct FIRM_ID *firm_id; + static volatile struct ZFW_CTRL *zfw_ctrl; + static volatile struct BOARD_CTRL *board_ctrl; + static volatile struct CH_CTRL *ch_ctrl; + static volatile struct BUF_CTRL *buf_ctrl; + int card, port; + + cyz_timerlist.expires = jiffies + (HZ); + for (card = 0 ; card < NR_CARDS ; card++){ + cinfo = &cy_card[card]; + + if (!IS_CYC_Z(*cinfo)) continue; + if (!ISZLOADED(*cinfo)) continue; + + firm_id = cinfo->base_addr + ID_ADDRESS; + zfw_ctrl = cinfo->base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &(zfw_ctrl->board_ctrl); + + /* Skip first polling cycle to avoid racing conditions with the FW */ + if (!cinfo->intr_enabled) { + cinfo->nports = (int) cy_readl(&board_ctrl->n_channel); + cinfo->intr_enabled = 1; + continue; + } + + cyz_handle_cmd(cinfo); + + for (port = 0 ; port < cinfo->nports ; port++) { + info = &cy_port[ port + cinfo->first_line ]; + tty = info->tty; + ch_ctrl = &(zfw_ctrl->ch_ctrl[port]); + buf_ctrl = &(zfw_ctrl->buf_ctrl[port]); + + if (!info->throttle) + cyz_handle_rx(info, ch_ctrl, buf_ctrl); + cyz_handle_tx(info, ch_ctrl, buf_ctrl); + } + /* poll every 'cyz_polling_cycle' period */ + cyz_timerlist.expires = jiffies + cyz_polling_cycle; + } + add_timer(&cyz_timerlist); + + return; +} /* cyz_poll */ + +#endif /* CONFIG_CYZ_INTR */ + +/********** End of block of Cyclades-Z specific code *********/ +/***********************************************************/ + + +/* This is called whenever a port becomes active; + interrupts are enabled and DTR & RTS are turned on. + */ +static int +startup(struct cyclades_port * info) +{ + unsigned long flags; + int retval = 0; + void __iomem *base_addr; + int card,chip,channel,index; + unsigned long page; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + + page = get_zeroed_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + + CY_LOCK(info, flags); + + if (info->flags & ASYNC_INITIALIZED){ + free_page(page); + goto errout; + } + + if (!info->type){ + if (info->tty){ + set_bit(TTY_IO_ERROR, &info->tty->flags); + } + free_page(page); + goto errout; + } + + if (info->xmit_buf) + free_page(page); + else + info->xmit_buf = (unsigned char *) page; + + CY_UNLOCK(info, flags); + + set_line_char(info); + + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + +#ifdef CY_DEBUG_OPEN + printk("cyc startup card %d, chip %d, channel %d, base_addr %lx\n", + card, chip, channel, (long)base_addr);/**/ +#endif + + CY_LOCK(info, flags); + + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + + cy_writeb(base_addr+(CyRTPR<<index), (info->default_timeout + ? info->default_timeout : 0x02)); /* 10ms rx timeout */ + + cyy_issue_cmd(base_addr,CyCHAN_CTL|CyENB_RCVR|CyENB_XMTR,index); + + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); + cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); + +#ifdef CY_DEBUG_DTR + printk("cyc:startup raising DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) | CyRxData); + info->flags |= ASYNC_INITIALIZED; + + if (info->tty){ + clear_bit(TTY_IO_ERROR, &info->tty->flags); + } + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + info->breakon = info->breakoff = 0; + memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); + info->idle_stats.in_use = + info->idle_stats.recv_idle = + info->idle_stats.xmit_idle = jiffies; + + CY_UNLOCK(info, flags); + + } else { + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + struct CH_CTRL __iomem *ch_ctrl; + int retval; + + base_addr = cy_card[card].base_addr; + + firm_id = base_addr + ID_ADDRESS; + if (!ISZLOADED(cy_card[card])){ + return -ENODEV; + } + + zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + ch_ctrl = zfw_ctrl->ch_ctrl; + +#ifdef CY_DEBUG_OPEN + printk("cyc startup Z card %d, channel %d, base_addr %lx\n", + card, channel, (long)base_addr);/**/ +#endif + + CY_LOCK(info, flags); + + cy_writel(&ch_ctrl[channel].op_mode, C_CH_ENABLE); +#ifdef Z_WAKE +#ifdef CONFIG_CYZ_INTR + cy_writel(&ch_ctrl[channel].intr_enable, + C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT| + C_IN_IOCTLW| + C_IN_MDCD); +#else + cy_writel(&ch_ctrl[channel].intr_enable, + C_IN_IOCTLW| + C_IN_MDCD); +#endif /* CONFIG_CYZ_INTR */ +#else +#ifdef CONFIG_CYZ_INTR + cy_writel(&ch_ctrl[channel].intr_enable, + C_IN_TXBEMPTY|C_IN_TXLOWWM|C_IN_RXHIWM|C_IN_RXNNDT| + C_IN_MDCD); +#else + cy_writel(&ch_ctrl[channel].intr_enable, + C_IN_MDCD); +#endif /* CONFIG_CYZ_INTR */ +#endif /* Z_WAKE */ + + retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L); + if (retval != 0){ + printk("cyc:startup(1) retval on ttyC%d was %x\n", + info->line, retval); + } + + /* Flush RX buffers before raising DTR and RTS */ + retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_RX, 0L); + if (retval != 0){ + printk("cyc:startup(2) retval on ttyC%d was %x\n", + info->line, retval); + } + + /* set timeout !!! */ + /* set RTS and DTR !!! */ + cy_writel(&ch_ctrl[channel].rs_control, + cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS | C_RS_DTR) ; + retval = cyz_issue_cmd(&cy_card[info->card], + channel, C_CM_IOCTLM, 0L); + if (retval != 0){ + printk("cyc:startup(3) retval on ttyC%d was %x\n", + info->line, retval); + } +#ifdef CY_DEBUG_DTR + printk("cyc:startup raising Z DTR\n"); +#endif + + /* enable send, recv, modem !!! */ + + info->flags |= ASYNC_INITIALIZED; + if (info->tty){ + clear_bit(TTY_IO_ERROR, &info->tty->flags); + } + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + info->breakon = info->breakoff = 0; + memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats)); + info->idle_stats.in_use = + info->idle_stats.recv_idle = + info->idle_stats.xmit_idle = jiffies; + + CY_UNLOCK(info, flags); + } + +#ifdef CY_DEBUG_OPEN + printk(" cyc startup done\n"); +#endif + return 0; + +errout: + CY_UNLOCK(info, flags); + return retval; +} /* startup */ + + +static void +start_xmit( struct cyclades_port *info ) +{ + unsigned long flags; + void __iomem *base_addr; + int card,chip,channel,index; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), channel); + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) | CyTxRdy); + CY_UNLOCK(info, flags); + } else { +#ifdef CONFIG_CYZ_INTR + int retval; + + CY_LOCK(info, flags); + retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_INTBACK, 0L); + if (retval != 0){ + printk("cyc:start_xmit retval on ttyC%d was %x\n", + info->line, retval); + } + CY_UNLOCK(info, flags); +#else /* CONFIG_CYZ_INTR */ + /* Don't have to do anything at this time */ +#endif /* CONFIG_CYZ_INTR */ + } +} /* start_xmit */ + +/* + * This routine shuts down a serial port; interrupts are disabled, + * and DTR is dropped if the hangup on close termio flag is on. + */ +static void +shutdown(struct cyclades_port * info) +{ + unsigned long flags; + void __iomem *base_addr; + int card,chip,channel,index; + + if (!(info->flags & ASYNC_INITIALIZED)){ + return; + } + + card = info->card; + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + +#ifdef CY_DEBUG_OPEN + printk("cyc shutdown Y card %d, chip %d, channel %d, base_addr %lx\n", + card, chip, channel, (long)base_addr); +#endif + + CY_LOCK(info, flags); + + /* Clear delta_msr_wait queue to avoid mem leaks. */ + wake_up_interruptible(&info->delta_msr_wait); + + if (info->xmit_buf){ + unsigned char * temp; + temp = info->xmit_buf; + info->xmit_buf = NULL; + free_page((unsigned long) temp); + } + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { + cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); + cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); +#ifdef CY_DEBUG_DTR + printk("cyc shutdown dropping DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + } + cyy_issue_cmd(base_addr,CyCHAN_CTL|CyDIS_RCVR,index); + /* it may be appropriate to clear _XMIT at + some later date (after testing)!!! */ + + if (info->tty){ + set_bit(TTY_IO_ERROR, &info->tty->flags); + } + info->flags &= ~ASYNC_INITIALIZED; + CY_UNLOCK(info, flags); + } else { + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + struct CH_CTRL __iomem *ch_ctrl; + int retval; + + base_addr = cy_card[card].base_addr; +#ifdef CY_DEBUG_OPEN + printk("cyc shutdown Z card %d, channel %d, base_addr %lx\n", + card, channel, (long)base_addr); +#endif + + firm_id = base_addr + ID_ADDRESS; + if (!ISZLOADED(cy_card[card])) { + return; + } + + zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + ch_ctrl = zfw_ctrl->ch_ctrl; + + CY_LOCK(info, flags); + + if (info->xmit_buf){ + unsigned char * temp; + temp = info->xmit_buf; + info->xmit_buf = NULL; + free_page((unsigned long) temp); + } + + if (!info->tty || (info->tty->termios->c_cflag & HUPCL)) { + cy_writel(&ch_ctrl[channel].rs_control, + (uclong)(cy_readl(&ch_ctrl[channel].rs_control) & + ~(C_RS_RTS | C_RS_DTR))); + retval = cyz_issue_cmd(&cy_card[info->card], + channel, C_CM_IOCTLM, 0L); + if (retval != 0){ + printk("cyc:shutdown retval on ttyC%d was %x\n", + info->line, retval); + } +#ifdef CY_DEBUG_DTR + printk("cyc:shutdown dropping Z DTR\n"); +#endif + } + + if (info->tty){ + set_bit(TTY_IO_ERROR, &info->tty->flags); + } + info->flags &= ~ASYNC_INITIALIZED; + + CY_UNLOCK(info, flags); + } + +#ifdef CY_DEBUG_OPEN + printk(" cyc shutdown done\n"); +#endif + return; +} /* shutdown */ + + +/* + * ------------------------------------------------------------ + * cy_open() and friends + * ------------------------------------------------------------ + */ + +static int +block_til_ready(struct tty_struct *tty, struct file * filp, + struct cyclades_port *info) +{ + DECLARE_WAITQUEUE(wait, current); + struct cyclades_card *cinfo; + unsigned long flags; + int chip, channel,index; + int retval; + void __iomem *base_addr; + + cinfo = &cy_card[info->card]; + channel = info->line - cinfo->first_line; + + /* + * If the device is in the middle of being closed, then block + * until it's done, and then try again. + */ + if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { + if (info->flags & ASYNC_CLOSING) { + interruptible_sleep_on(&info->close_wait); + } + return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); + } + + /* + * If non-blocking mode is set, then make the check up front + * and then exit. + */ + if ((filp->f_flags & O_NONBLOCK) || + (tty->flags & (1 << TTY_IO_ERROR))) { + info->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + /* + * Block waiting for the carrier detect and the line to become + * free (i.e., not in use by the callout). While we are in + * this loop, info->count is dropped by one, so that + * cy_close() knows when to free things. We restore it upon + * exit, either normal or abnormal. + */ + retval = 0; + add_wait_queue(&info->open_wait, &wait); +#ifdef CY_DEBUG_OPEN + printk("cyc block_til_ready before block: ttyC%d, count = %d\n", + info->line, info->count);/**/ +#endif + CY_LOCK(info, flags); + if (!tty_hung_up_p(filp)) + info->count--; + CY_UNLOCK(info, flags); +#ifdef CY_DEBUG_COUNT + printk("cyc block_til_ready: (%d): decrementing count to %d\n", + current->pid, info->count); +#endif + info->blocked_open++; + + if (!IS_CYC_Z(*cinfo)) { + chip = channel>>2; + channel &= 0x03; + index = cinfo->bus_index; + base_addr = cinfo->base_addr + (cy_chip_offset[chip]<<index); + + while (1) { + CY_LOCK(info, flags); + if ((tty->termios->c_cflag & CBAUD)){ + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); + cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); +#ifdef CY_DEBUG_DTR + printk("cyc:block_til_ready raising DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + } + CY_UNLOCK(info, flags); + + set_current_state(TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) + || !(info->flags & ASYNC_INITIALIZED) ){ + retval = ((info->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); + break; + } + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (!(info->flags & ASYNC_CLOSING) + && (C_CLOCAL(tty) + || (cy_readb(base_addr+(CyMSVR1<<index)) & CyDCD))) { + CY_UNLOCK(info, flags); + break; + } + CY_UNLOCK(info, flags); + + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } +#ifdef CY_DEBUG_OPEN + printk("cyc block_til_ready blocking: ttyC%d, count = %d\n", + info->line, info->count);/**/ +#endif + schedule(); + } + } else { + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + struct CH_CTRL __iomem *ch_ctrl; + int retval; + + base_addr = cinfo->base_addr; + firm_id = base_addr + ID_ADDRESS; + if (!ISZLOADED(*cinfo)){ + current->state = TASK_RUNNING; + remove_wait_queue(&info->open_wait, &wait); + return -EINVAL; + } + + zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + ch_ctrl = zfw_ctrl->ch_ctrl; + + while (1) { + if ((tty->termios->c_cflag & CBAUD)){ + cy_writel(&ch_ctrl[channel].rs_control, + cy_readl(&ch_ctrl[channel].rs_control) | + (C_RS_RTS | C_RS_DTR)); + retval = cyz_issue_cmd(&cy_card[info->card], + channel, C_CM_IOCTLM, 0L); + if (retval != 0){ + printk("cyc:block_til_ready retval on ttyC%d was %x\n", + info->line, retval); + } +#ifdef CY_DEBUG_DTR + printk("cyc:block_til_ready raising Z DTR\n"); +#endif + } + + set_current_state(TASK_INTERRUPTIBLE); + if (tty_hung_up_p(filp) + || !(info->flags & ASYNC_INITIALIZED) ){ + retval = ((info->flags & ASYNC_HUP_NOTIFY) ? + -EAGAIN : -ERESTARTSYS); + break; + } + if (!(info->flags & ASYNC_CLOSING) + && (C_CLOCAL(tty) + || (cy_readl(&ch_ctrl[channel].rs_status) & C_RS_DCD))) { + break; + } + if (signal_pending(current)) { + retval = -ERESTARTSYS; + break; + } +#ifdef CY_DEBUG_OPEN + printk("cyc block_til_ready blocking: ttyC%d, count = %d\n", + info->line, info->count);/**/ +#endif + schedule(); + } + } + current->state = TASK_RUNNING; + remove_wait_queue(&info->open_wait, &wait); + if (!tty_hung_up_p(filp)){ + info->count++; +#ifdef CY_DEBUG_COUNT + printk("cyc:block_til_ready (%d): incrementing count to %d\n", + current->pid, info->count); +#endif + } + info->blocked_open--; +#ifdef CY_DEBUG_OPEN + printk("cyc:block_til_ready after blocking: ttyC%d, count = %d\n", + info->line, info->count);/**/ +#endif + if (retval) + return retval; + info->flags |= ASYNC_NORMAL_ACTIVE; + return 0; +} /* block_til_ready */ + + +/* + * This routine is called whenever a serial port is opened. It + * performs the serial-specific initialization for the tty structure. + */ +static int +cy_open(struct tty_struct *tty, struct file * filp) +{ + struct cyclades_port *info; + int retval, line; + unsigned long page; + + line = tty->index; + if ((line < 0) || (NR_PORTS <= line)){ + return -ENODEV; + } + info = &cy_port[line]; + if (info->line < 0){ + return -ENODEV; + } + + /* If the card's firmware hasn't been loaded, + treat it as absent from the system. This + will make the user pay attention. + */ + if (IS_CYC_Z(cy_card[info->card])) { + struct cyclades_card *cinfo = &cy_card[info->card]; + struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS; + + if (!ISZLOADED(*cinfo)) { + if (((ZE_V1 ==cy_readl(&((struct RUNTIME_9060 __iomem *) + (cinfo->ctl_addr))->mail_box_0)) && + Z_FPGA_CHECK (*cinfo)) && + (ZFIRM_HLT == cy_readl (&firm_id->signature))) + { + printk ("cyc:Cyclades-Z Error: you need an external power supply for this number of ports.\n\rFirmware halted.\r\n"); + } else { + printk("cyc:Cyclades-Z firmware not yet loaded\n"); + } + return -ENODEV; + } +#ifdef CONFIG_CYZ_INTR + else { + /* In case this Z board is operating in interrupt mode, its + interrupts should be enabled as soon as the first open happens + to one of its ports. */ + if (!cinfo->intr_enabled) { + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + + zfw_ctrl = cinfo->base_addr + (cy_readl (&firm_id->zfwctrl_addr) & 0xfffff); + + board_ctrl = &zfw_ctrl->board_ctrl; + + /* Enable interrupts on the PLX chip */ + cy_writew(cinfo->ctl_addr+0x68, + cy_readw(cinfo->ctl_addr+0x68)|0x0900); + /* Enable interrupts on the FW */ + retval = cyz_issue_cmd(cinfo, + 0, C_CM_IRQ_ENBL, 0L); + if (retval != 0){ + printk("cyc:IRQ enable retval was %x\n", retval); + } + cinfo->nports = (int) cy_readl (&board_ctrl->n_channel); + cinfo->intr_enabled = 1; + } + } +#endif /* CONFIG_CYZ_INTR */ + /* Make sure this Z port really exists in hardware */ + if (info->line > (cinfo->first_line + cinfo->nports - 1)) + return -ENODEV; + } +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_open ttyC%d\n", info->line); /* */ +#endif + tty->driver_data = info; + info->tty = tty; + if (serial_paranoia_check(info, tty->name, "cy_open")){ + return -ENODEV; + } +#ifdef CY_DEBUG_OPEN + printk("cyc:cy_open ttyC%d, count = %d\n", + info->line, info->count);/**/ +#endif + info->count++; +#ifdef CY_DEBUG_COUNT + printk("cyc:cy_open (%d): incrementing count to %d\n", + current->pid, info->count); +#endif + if (!tmp_buf) { + page = get_zeroed_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + if (tmp_buf) + free_page(page); + else + tmp_buf = (unsigned char *) page; + } + + /* + * If the port is the middle of closing, bail out now + */ + if (tty_hung_up_p(filp) || (info->flags & ASYNC_CLOSING)) { + if (info->flags & ASYNC_CLOSING) + interruptible_sleep_on(&info->close_wait); + return ((info->flags & ASYNC_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS); + } + + /* + * Start up serial port + */ + retval = startup(info); + if (retval){ + return retval; + } + + retval = block_til_ready(tty, filp, info); + if (retval) { +#ifdef CY_DEBUG_OPEN + printk("cyc:cy_open returning after block_til_ready with %d\n", + retval); +#endif + return retval; + } + + info->throttle = 0; + +#ifdef CY_DEBUG_OPEN + printk(" cyc:cy_open done\n");/**/ +#endif + + return 0; +} /* cy_open */ + + +/* + * cy_wait_until_sent() --- wait until the transmitter is empty + */ +static void +cy_wait_until_sent(struct tty_struct *tty, int timeout) +{ + struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; + void __iomem *base_addr; + int card,chip,channel,index; + unsigned long orig_jiffies; + int char_time; + + if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent")) + return; + + if (info->xmit_fifo_size == 0) + return; /* Just in case.... */ + + + orig_jiffies = jiffies; + /* + * Set the check interval to be 1/5 of the estimated time to + * send a single character, and make it at least 1. The check + * interval should also be less than the timeout. + * + * Note: we have to use pretty tight timings here to satisfy + * the NIST-PCTS. + */ + char_time = (info->timeout - HZ/50) / info->xmit_fifo_size; + char_time = char_time / 5; + if (char_time <= 0) + char_time = 1; + if (timeout < 0) + timeout = 0; + if (timeout) + char_time = min(char_time, timeout); + /* + * If the transmitter hasn't cleared in twice the approximate + * amount of time to send the entire FIFO, it probably won't + * ever clear. This assumes the UART isn't doing flow + * control, which is currently the case. Hence, if it ever + * takes longer than info->timeout, this is probably due to a + * UART bug of some kind. So, we clamp the timeout parameter at + * 2*info->timeout. + */ + if (!timeout || timeout > 2*info->timeout) + timeout = 2*info->timeout; +#ifdef CY_DEBUG_WAIT_UNTIL_SENT + printk("In cy_wait_until_sent(%d) check=%lu...", timeout, char_time); + printk("jiff=%lu...", jiffies); +#endif + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + while (cy_readb(base_addr+(CySRER<<index)) & CyTxRdy) { +#ifdef CY_DEBUG_WAIT_UNTIL_SENT + printk("Not clean (jiff=%lu)...", jiffies); +#endif + if (msleep_interruptible(jiffies_to_msecs(char_time))) + break; + if (timeout && time_after(jiffies, orig_jiffies + timeout)) + break; + } + } else { + // Nothing to do! + } + /* Run one more char cycle */ + msleep_interruptible(jiffies_to_msecs(char_time * 5)); +#ifdef CY_DEBUG_WAIT_UNTIL_SENT + printk("Clean (jiff=%lu)...done\n", jiffies); +#endif +} + +/* + * This routine is called when a particular tty device is closed. + */ +static void +cy_close(struct tty_struct *tty, struct file *filp) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + unsigned long flags; + +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_close ttyC%d\n", info->line); +#endif + + if (!info || serial_paranoia_check(info, tty->name, "cy_close")){ + return; + } + + CY_LOCK(info, flags); + /* If the TTY is being hung up, nothing to do */ + if (tty_hung_up_p(filp)) { + CY_UNLOCK(info, flags); + return; + } + +#ifdef CY_DEBUG_OPEN + printk("cyc:cy_close ttyC%d, count = %d\n", info->line, info->count); +#endif + if ((tty->count == 1) && (info->count != 1)) { + /* + * Uh, oh. tty->count is 1, which means that the tty + * structure will be freed. Info->count should always + * be one in these conditions. If it's greater than + * one, we've got real problems, since it means the + * serial port won't be shutdown. + */ + printk("cyc:cy_close: bad serial port count; tty->count is 1, " + "info->count is %d\n", info->count); + info->count = 1; + } +#ifdef CY_DEBUG_COUNT + printk("cyc:cy_close at (%d): decrementing count to %d\n", + current->pid, info->count - 1); +#endif + if (--info->count < 0) { +#ifdef CY_DEBUG_COUNT + printk("cyc:cyc_close setting count to 0\n"); +#endif + info->count = 0; + } + if (info->count) { + CY_UNLOCK(info, flags); + return; + } + info->flags |= ASYNC_CLOSING; + + /* + * Now we wait for the transmit buffer to clear; and we notify + * the line discipline to only process XON/XOFF characters. + */ + tty->closing = 1; + CY_UNLOCK(info, flags); + if (info->closing_wait != CY_CLOSING_WAIT_NONE) { + tty_wait_until_sent(tty, info->closing_wait); + } + CY_LOCK(info, flags); + + if (!IS_CYC_Z(cy_card[info->card])) { + int channel = info->line - cy_card[info->card].first_line; + int index = cy_card[info->card].bus_index; + void __iomem *base_addr = cy_card[info->card].base_addr + (cy_chip_offset[channel>>2] << index); + /* Stop accepting input */ + channel &= 0x03; + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & ~CyRxData); + if (info->flags & ASYNC_INITIALIZED) { + /* Waiting for on-board buffers to be empty before closing + the port */ + CY_UNLOCK(info, flags); + cy_wait_until_sent(tty, info->timeout); + CY_LOCK(info, flags); + } + } else { +#ifdef Z_WAKE + /* Waiting for on-board buffers to be empty before closing the port */ + void __iomem *base_addr = cy_card[info->card].base_addr; + struct FIRM_ID __iomem *firm_id = base_addr + ID_ADDRESS; + struct ZFW_CTRL __iomem *zfw_ctrl = base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + struct CH_CTRL __iomem *ch_ctrl = zfw_ctrl->ch_ctrl; + int channel = info->line - cy_card[info->card].first_line; + int retval; + + if (cy_readl(&ch_ctrl[channel].flow_status) != C_FS_TXIDLE) { + retval = cyz_issue_cmd(&cy_card[info->card], channel, + C_CM_IOCTLW, 0L); + if (retval != 0){ + printk("cyc:cy_close retval on ttyC%d was %x\n", + info->line, retval); + } + CY_UNLOCK(info, flags); + interruptible_sleep_on(&info->shutdown_wait); + CY_LOCK(info, flags); + } +#endif + } + + CY_UNLOCK(info, flags); + shutdown(info); + if (tty->driver->flush_buffer) + tty->driver->flush_buffer(tty); + tty_ldisc_flush(tty); + CY_LOCK(info, flags); + + tty->closing = 0; + info->event = 0; + info->tty = NULL; + if (info->blocked_open) { + CY_UNLOCK(info, flags); + if (info->close_delay) { + msleep_interruptible(jiffies_to_msecs(info->close_delay)); + } + wake_up_interruptible(&info->open_wait); + CY_LOCK(info, flags); + } + info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); + wake_up_interruptible(&info->close_wait); + +#ifdef CY_DEBUG_OTHER + printk(" cyc:cy_close done\n"); +#endif + + CY_UNLOCK(info, flags); + return; +} /* cy_close */ + + +/* This routine gets called when tty_write has put something into + * the write_queue. The characters may come from user space or + * kernel space. + * + * This routine will return the number of characters actually + * accepted for writing. + * + * If the port is not already transmitting stuff, start it off by + * enabling interrupts. The interrupt service routine will then + * ensure that the characters are sent. + * If the port is already active, there is no need to kick it. + * + */ +static int +cy_write(struct tty_struct * tty, const unsigned char *buf, int count) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + unsigned long flags; + int c, ret = 0; + +#ifdef CY_DEBUG_IO + printk("cyc:cy_write ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_write")){ + return 0; + } + + if (!tty || !info->xmit_buf || !tmp_buf){ + return 0; + } + + CY_LOCK(info, flags); + while (1) { + c = min(count, min((int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1), + (int)(SERIAL_XMIT_SIZE - info->xmit_head))); + + if (c <= 0) + break; + + memcpy(info->xmit_buf + info->xmit_head, buf, c); + info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1); + info->xmit_cnt += c; + buf += c; + count -= c; + ret += c; + } + CY_UNLOCK(info, flags); + + info->idle_stats.xmit_bytes += ret; + info->idle_stats.xmit_idle = jiffies; + + if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) { + start_xmit(info); + } + return ret; +} /* cy_write */ + + +/* + * This routine is called by the kernel to write a single + * character to the tty device. If the kernel uses this routine, + * it must call the flush_chars() routine (if defined) when it is + * done stuffing characters into the driver. If there is no room + * in the queue, the character is ignored. + */ +static void +cy_put_char(struct tty_struct *tty, unsigned char ch) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + unsigned long flags; + +#ifdef CY_DEBUG_IO + printk("cyc:cy_put_char ttyC%d\n", info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_put_char")) + return; + + if (!tty || !info->xmit_buf) + return; + + CY_LOCK(info, flags); + if (info->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { + CY_UNLOCK(info, flags); + return; + } + + info->xmit_buf[info->xmit_head++] = ch; + info->xmit_head &= SERIAL_XMIT_SIZE - 1; + info->xmit_cnt++; + info->idle_stats.xmit_bytes++; + info->idle_stats.xmit_idle = jiffies; + CY_UNLOCK(info, flags); +} /* cy_put_char */ + + +/* + * This routine is called by the kernel after it has written a + * series of characters to the tty device using put_char(). + */ +static void +cy_flush_chars(struct tty_struct *tty) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + +#ifdef CY_DEBUG_IO + printk("cyc:cy_flush_chars ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_chars")) + return; + + if (info->xmit_cnt <= 0 || tty->stopped + || tty->hw_stopped || !info->xmit_buf) + return; + + start_xmit(info); +} /* cy_flush_chars */ + + +/* + * This routine returns the numbers of characters the tty driver + * will accept for queuing to be written. This number is subject + * to change as output buffers get emptied, or if the output flow + * control is activated. + */ +static int +cy_write_room(struct tty_struct *tty) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + int ret; + +#ifdef CY_DEBUG_IO + printk("cyc:cy_write_room ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_write_room")) + return 0; + ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1; + if (ret < 0) + ret = 0; + return ret; +} /* cy_write_room */ + + +static int +cy_chars_in_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + int card, channel; + + if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer")) + return 0; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + +#ifdef Z_EXT_CHARS_IN_BUFFER + if (!IS_CYC_Z(cy_card[card])) { +#endif /* Z_EXT_CHARS_IN_BUFFER */ +#ifdef CY_DEBUG_IO + printk("cyc:cy_chars_in_buffer ttyC%d %d\n", + info->line, info->xmit_cnt); /* */ +#endif + return info->xmit_cnt; +#ifdef Z_EXT_CHARS_IN_BUFFER + } else { + static volatile struct FIRM_ID *firm_id; + static volatile struct ZFW_CTRL *zfw_ctrl; + static volatile struct CH_CTRL *ch_ctrl; + static volatile struct BUF_CTRL *buf_ctrl; + int char_count; + volatile uclong tx_put, tx_get, tx_bufsize; + + firm_id = cy_card[card].base_addr + ID_ADDRESS; + zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); + buf_ctrl = &(zfw_ctrl->buf_ctrl[channel]); + + tx_get = cy_readl(&buf_ctrl->tx_get); + tx_put = cy_readl(&buf_ctrl->tx_put); + tx_bufsize = cy_readl(&buf_ctrl->tx_bufsize); + if (tx_put >= tx_get) + char_count = tx_put - tx_get; + else + char_count = tx_put - tx_get + tx_bufsize; +#ifdef CY_DEBUG_IO + printk("cyc:cy_chars_in_buffer ttyC%d %d\n", + info->line, info->xmit_cnt + char_count); /* */ +#endif + return (info->xmit_cnt + char_count); + } +#endif /* Z_EXT_CHARS_IN_BUFFER */ +} /* cy_chars_in_buffer */ + + +/* + * ------------------------------------------------------------ + * cy_ioctl() and friends + * ------------------------------------------------------------ + */ + +static void +cyy_baud_calc(struct cyclades_port *info, uclong baud) +{ + int co, co_val, bpr; + uclong cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 : 25000000); + + if (baud == 0) { + info->tbpr = info->tco = info->rbpr = info->rco = 0; + return; + } + + /* determine which prescaler to use */ + for (co = 4, co_val = 2048; co; co--, co_val >>= 2) { + if (cy_clock / co_val / baud > 63) + break; + } + + bpr = (cy_clock / co_val * 2 / baud + 1) / 2; + if (bpr > 255) + bpr = 255; + + info->tbpr = info->rbpr = bpr; + info->tco = info->rco = co; +} + +/* + * This routine finds or computes the various line characteristics. + * It used to be called config_setup + */ +static void +set_line_char(struct cyclades_port * info) +{ + unsigned long flags; + void __iomem *base_addr; + int card,chip,channel,index; + unsigned cflag, iflag; + unsigned short chip_number; + int baud, baud_rate = 0; + int i; + + + if (!info->tty || !info->tty->termios){ + return; + } + if (info->line == -1){ + return; + } + cflag = info->tty->termios->c_cflag; + iflag = info->tty->termios->c_iflag; + + /* + * Set up the tty->alt_speed kludge + */ + if (info->tty) { + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) + info->tty->alt_speed = 57600; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) + info->tty->alt_speed = 115200; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI) + info->tty->alt_speed = 230400; + if ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP) + info->tty->alt_speed = 460800; + } + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + chip_number = channel / 4; + + if (!IS_CYC_Z(cy_card[card])) { + + index = cy_card[card].bus_index; + + /* baud rate */ + baud = tty_get_baud_rate(info->tty); + if ((baud == 38400) && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { + if (info->custom_divisor) + baud_rate = info->baud / info->custom_divisor; + else + baud_rate = info->baud; + } else if (baud > CD1400_MAX_SPEED) { + baud = CD1400_MAX_SPEED; + } + /* find the baud index */ + for (i = 0; i < 20; i++) { + if (baud == baud_table[i]) { + break; + } + } + if (i == 20) { + i = 19; /* CD1400_MAX_SPEED */ + } + + if ((baud == 38400) && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { + cyy_baud_calc(info, baud_rate); + } else { + if(info->chip_rev >= CD1400_REV_J) { + /* It is a CD1400 rev. J or later */ + info->tbpr = baud_bpr_60[i]; /* Tx BPR */ + info->tco = baud_co_60[i]; /* Tx CO */ + info->rbpr = baud_bpr_60[i]; /* Rx BPR */ + info->rco = baud_co_60[i]; /* Rx CO */ + } else { + info->tbpr = baud_bpr_25[i]; /* Tx BPR */ + info->tco = baud_co_25[i]; /* Tx CO */ + info->rbpr = baud_bpr_25[i]; /* Rx BPR */ + info->rco = baud_co_25[i]; /* Rx CO */ + } + } + if (baud_table[i] == 134) { + /* get it right for 134.5 baud */ + info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2; + } else if ((baud == 38400) && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { + info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2; + } else if (baud_table[i]) { + info->timeout = (info->xmit_fifo_size*HZ*15/baud_table[i]) + 2; + /* this needs to be propagated into the card info */ + } else { + info->timeout = 0; + } + /* By tradition (is it a standard?) a baud rate of zero + implies the line should be/has been closed. A bit + later in this routine such a test is performed. */ + + /* byte size and parity */ + info->cor5 = 0; + info->cor4 = 0; + info->cor3 = (info->default_threshold + ? info->default_threshold + : baud_cor3[i]); /* receive threshold */ + info->cor2 = CyETC; + switch(cflag & CSIZE){ + case CS5: + info->cor1 = Cy_5_BITS; + break; + case CS6: + info->cor1 = Cy_6_BITS; + break; + case CS7: + info->cor1 = Cy_7_BITS; + break; + case CS8: + info->cor1 = Cy_8_BITS; + break; + } + if(cflag & CSTOPB){ + info->cor1 |= Cy_2_STOP; + } + if (cflag & PARENB){ + if (cflag & PARODD){ + info->cor1 |= CyPARITY_O; + }else{ + info->cor1 |= CyPARITY_E; + } + }else{ + info->cor1 |= CyPARITY_NONE; + } + + /* CTS flow control flag */ + if (cflag & CRTSCTS){ + info->flags |= ASYNC_CTS_FLOW; + info->cor2 |= CyCtsAE; + }else{ + info->flags &= ~ASYNC_CTS_FLOW; + info->cor2 &= ~CyCtsAE; + } + if (cflag & CLOCAL) + info->flags &= ~ASYNC_CHECK_CD; + else + info->flags |= ASYNC_CHECK_CD; + + /*********************************************** + The hardware option, CyRtsAO, presents RTS when + the chip has characters to send. Since most modems + use RTS as reverse (inbound) flow control, this + option is not used. If inbound flow control is + necessary, DTR can be programmed to provide the + appropriate signals for use with a non-standard + cable. Contact Marcio Saito for details. + ***********************************************/ + + chip = channel>>2; + channel &= 0x03; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + + /* tx and rx baud rate */ + + cy_writeb(base_addr+(CyTCOR<<index), info->tco); + cy_writeb(base_addr+(CyTBPR<<index), info->tbpr); + cy_writeb(base_addr+(CyRCOR<<index), info->rco); + cy_writeb(base_addr+(CyRBPR<<index), info->rbpr); + + /* set line characteristics according configuration */ + + cy_writeb(base_addr+(CySCHR1<<index), + START_CHAR(info->tty)); + cy_writeb(base_addr+(CySCHR2<<index), + STOP_CHAR(info->tty)); + cy_writeb(base_addr+(CyCOR1<<index), info->cor1); + cy_writeb(base_addr+(CyCOR2<<index), info->cor2); + cy_writeb(base_addr+(CyCOR3<<index), info->cor3); + cy_writeb(base_addr+(CyCOR4<<index), info->cor4); + cy_writeb(base_addr+(CyCOR5<<index), info->cor5); + + cyy_issue_cmd(base_addr, + CyCOR_CHANGE|CyCOR1ch|CyCOR2ch|CyCOR3ch,index); + + cy_writeb(base_addr+(CyCAR<<index), + (u_char)channel); /* !!! Is this needed? */ + cy_writeb(base_addr+(CyRTPR<<index), (info->default_timeout + ? info->default_timeout + : 0x02)); /* 10ms rx timeout */ + + if (C_CLOCAL(info->tty)) { + /* without modem intr */ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) | CyMdmCh); + /* act on 1->0 modem transitions */ + if ((cflag & CRTSCTS) && info->rflow) { + cy_writeb(base_addr+(CyMCOR1<<index), + (CyCTS|rflow_thr[i])); + } else { + cy_writeb(base_addr+(CyMCOR1<<index), CyCTS); + } + /* act on 0->1 modem transitions */ + cy_writeb(base_addr+(CyMCOR2<<index), CyCTS); + } else { + /* without modem intr */ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) | CyMdmCh); + /* act on 1->0 modem transitions */ + if ((cflag & CRTSCTS) && info->rflow) { + cy_writeb(base_addr+(CyMCOR1<<index), + (CyDSR|CyCTS|CyRI|CyDCD|rflow_thr[i])); + } else { + cy_writeb(base_addr+(CyMCOR1<<index), + CyDSR|CyCTS|CyRI|CyDCD); + } + /* act on 0->1 modem transitions */ + cy_writeb(base_addr+(CyMCOR2<<index), + CyDSR|CyCTS|CyRI|CyDCD); + } + + if(i == 0){ /* baud rate is zero, turn off line */ + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); + } else { + cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); + } +#ifdef CY_DEBUG_DTR + printk("cyc:set_line_char dropping DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + }else{ + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); + } else { + cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); + } +#ifdef CY_DEBUG_DTR + printk("cyc:set_line_char raising DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + } + + if (info->tty){ + clear_bit(TTY_IO_ERROR, &info->tty->flags); + } + CY_UNLOCK(info, flags); + + } else { + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + struct CH_CTRL __iomem *ch_ctrl; + struct BUF_CTRL __iomem *buf_ctrl; + uclong sw_flow; + int retval; + + firm_id = cy_card[card].base_addr + ID_ADDRESS; + if (!ISZLOADED(cy_card[card])) { + return; + } + + zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + ch_ctrl = &(zfw_ctrl->ch_ctrl[channel]); + buf_ctrl = &zfw_ctrl->buf_ctrl[channel]; + + /* baud rate */ + baud = tty_get_baud_rate(info->tty); + if ((baud == 38400) && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { + if (info->custom_divisor) + baud_rate = info->baud / info->custom_divisor; + else + baud_rate = info->baud; + } else if (baud > CYZ_MAX_SPEED) { + baud = CYZ_MAX_SPEED; + } + cy_writel(&ch_ctrl->comm_baud , baud); + + if (baud == 134) { + /* get it right for 134.5 baud */ + info->timeout = (info->xmit_fifo_size*HZ*30/269) + 2; + } else if ((baud == 38400) && + ((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST)) { + info->timeout = (info->xmit_fifo_size*HZ*15/baud_rate) + 2; + } else if (baud) { + info->timeout = (info->xmit_fifo_size*HZ*15/baud) + 2; + /* this needs to be propagated into the card info */ + } else { + info->timeout = 0; + } + + /* byte size and parity */ + switch(cflag & CSIZE){ + case CS5: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS5); break; + case CS6: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS6); break; + case CS7: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS7); break; + case CS8: cy_writel(&ch_ctrl->comm_data_l , C_DL_CS8); break; + } + if(cflag & CSTOPB){ + cy_writel(&ch_ctrl->comm_data_l, + cy_readl(&ch_ctrl->comm_data_l) | C_DL_2STOP); + }else{ + cy_writel(&ch_ctrl->comm_data_l, + cy_readl(&ch_ctrl->comm_data_l) | C_DL_1STOP); + } + if (cflag & PARENB){ + if (cflag & PARODD){ + cy_writel(&ch_ctrl->comm_parity , C_PR_ODD); + }else{ + cy_writel(&ch_ctrl->comm_parity , C_PR_EVEN); + } + }else{ + cy_writel(&ch_ctrl->comm_parity , C_PR_NONE); + } + + /* CTS flow control flag */ + if (cflag & CRTSCTS){ + cy_writel(&ch_ctrl->hw_flow, + cy_readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS); + }else{ + cy_writel(&ch_ctrl->hw_flow, + cy_readl(&ch_ctrl->hw_flow) & ~(C_RS_CTS | C_RS_RTS)); + } + /* As the HW flow control is done in firmware, the driver doesn't + need to care about it */ + info->flags &= ~ASYNC_CTS_FLOW; + + /* XON/XOFF/XANY flow control flags */ + sw_flow = 0; + if (iflag & IXON){ + sw_flow |= C_FL_OXX; + if (iflag & IXANY) + sw_flow |= C_FL_OIXANY; + } + cy_writel(&ch_ctrl->sw_flow, sw_flow); + + retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_IOCTL, 0L); + if (retval != 0){ + printk("cyc:set_line_char retval on ttyC%d was %x\n", + info->line, retval); + } + + /* CD sensitivity */ + if (cflag & CLOCAL){ + info->flags &= ~ASYNC_CHECK_CD; + }else{ + info->flags |= ASYNC_CHECK_CD; + } + + if(baud == 0){ /* baud rate is zero, turn off line */ + cy_writel(&ch_ctrl->rs_control, + cy_readl(&ch_ctrl->rs_control) & ~C_RS_DTR); +#ifdef CY_DEBUG_DTR + printk("cyc:set_line_char dropping Z DTR\n"); +#endif + }else{ + cy_writel(&ch_ctrl->rs_control, + cy_readl(&ch_ctrl->rs_control) | C_RS_DTR); +#ifdef CY_DEBUG_DTR + printk("cyc:set_line_char raising Z DTR\n"); +#endif + } + + retval = cyz_issue_cmd( &cy_card[card], channel, C_CM_IOCTLM, 0L); + if (retval != 0){ + printk("cyc:set_line_char(2) retval on ttyC%d was %x\n", + info->line, retval); + } + + if (info->tty){ + clear_bit(TTY_IO_ERROR, &info->tty->flags); + } + } +} /* set_line_char */ + + +static int +get_serial_info(struct cyclades_port * info, + struct serial_struct __user * retinfo) +{ + struct serial_struct tmp; + struct cyclades_card *cinfo = &cy_card[info->card]; + + if (!retinfo) + return -EFAULT; + memset(&tmp, 0, sizeof(tmp)); + tmp.type = info->type; + tmp.line = info->line; + tmp.port = info->card * 0x100 + info->line - cinfo->first_line; + tmp.irq = cinfo->irq; + tmp.flags = info->flags; + tmp.close_delay = info->close_delay; + tmp.baud_base = info->baud; + tmp.custom_divisor = info->custom_divisor; + tmp.hub6 = 0; /*!!!*/ + return copy_to_user(retinfo,&tmp,sizeof(*retinfo))?-EFAULT:0; +} /* get_serial_info */ + + +static int +set_serial_info(struct cyclades_port * info, + struct serial_struct __user * new_info) +{ + struct serial_struct new_serial; + struct cyclades_port old_info; + + if (copy_from_user(&new_serial,new_info,sizeof(new_serial))) + return -EFAULT; + old_info = *info; + + if (!capable(CAP_SYS_ADMIN)) { + if ((new_serial.close_delay != info->close_delay) || + (new_serial.baud_base != info->baud) || + ((new_serial.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK) != + (info->flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))) + return -EPERM; + info->flags = ((info->flags & ~ASYNC_USR_MASK) | + (new_serial.flags & ASYNC_USR_MASK)); + info->baud = new_serial.baud_base; + info->custom_divisor = new_serial.custom_divisor; + goto check_and_exit; + } + + + /* + * OK, past this point, all the error checking has been done. + * At this point, we start making changes..... + */ + + info->baud = new_serial.baud_base; + info->custom_divisor = new_serial.custom_divisor; + info->flags = ((info->flags & ~ASYNC_FLAGS) | + (new_serial.flags & ASYNC_FLAGS)); + info->close_delay = new_serial.close_delay * HZ/100; + info->closing_wait = new_serial.closing_wait * HZ/100; + +check_and_exit: + if (info->flags & ASYNC_INITIALIZED){ + set_line_char(info); + return 0; + }else{ + return startup(info); + } +} /* set_serial_info */ + +/* + * get_lsr_info - get line status register info + * + * Purpose: Let user call ioctl() to get info when the UART physically + * is emptied. On bus types like RS485, the transmitter must + * release the bus after transmitting. This must be done when + * the transmit shift register is empty, not be done when the + * transmit holding register is empty. This functionality + * allows an RS485 driver to be written in user space. + */ +static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value) +{ + int card, chip, channel, index; + unsigned char status; + unsigned int result; + unsigned long flags; + void __iomem *base_addr; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + status = cy_readb(base_addr+(CySRER<<index)) & (CyTxRdy|CyTxMpty); + CY_UNLOCK(info, flags); + result = (status ? 0 : TIOCSER_TEMT); + } else { + /* Not supported yet */ + return -EINVAL; + } + return put_user(result, (unsigned long __user *) value); +} + +static int +cy_tiocmget(struct tty_struct *tty, struct file *file) +{ + struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; + int card,chip,channel,index; + void __iomem *base_addr; + unsigned long flags; + unsigned char status; + unsigned long lstatus; + unsigned int result; + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + struct CH_CTRL __iomem *ch_ctrl; + + if (serial_paranoia_check(info, tty->name, __FUNCTION__)) + return -ENODEV; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + status = cy_readb(base_addr+(CyMSVR1<<index)); + status |= cy_readb(base_addr+(CyMSVR2<<index)); + CY_UNLOCK(info, flags); + + if (info->rtsdtr_inv) { + result = ((status & CyRTS) ? TIOCM_DTR : 0) + | ((status & CyDTR) ? TIOCM_RTS : 0); + } else { + result = ((status & CyRTS) ? TIOCM_RTS : 0) + | ((status & CyDTR) ? TIOCM_DTR : 0); + } + result |= ((status & CyDCD) ? TIOCM_CAR : 0) + | ((status & CyRI) ? TIOCM_RNG : 0) + | ((status & CyDSR) ? TIOCM_DSR : 0) + | ((status & CyCTS) ? TIOCM_CTS : 0); + } else { + base_addr = cy_card[card].base_addr; + + if (cy_card[card].num_chips != -1){ + return -EINVAL; + } + + firm_id = cy_card[card].base_addr + ID_ADDRESS; + if (ISZLOADED(cy_card[card])) { + zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + ch_ctrl = zfw_ctrl->ch_ctrl; + lstatus = cy_readl(&ch_ctrl[channel].rs_status); + result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) + | ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) + | ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) + | ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) + | ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) + | ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0); + }else{ + result = 0; + return -ENODEV; + } + + } + return result; +} /* cy_tiomget */ + + +static int +cy_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear) +{ + struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; + int card,chip,channel,index; + void __iomem *base_addr; + unsigned long flags; + struct FIRM_ID __iomem *firm_id; + struct ZFW_CTRL __iomem *zfw_ctrl; + struct BOARD_CTRL __iomem *board_ctrl; + struct CH_CTRL __iomem *ch_ctrl; + int retval; + + if (serial_paranoia_check(info, tty->name, __FUNCTION__)) + return -ENODEV; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + if (set & TIOCM_RTS){ + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); + } else { + cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); + } + CY_UNLOCK(info, flags); + } + if (clear & TIOCM_RTS) { + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); + } else { + cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); + } + CY_UNLOCK(info, flags); + } + if (set & TIOCM_DTR){ + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); + } else { + cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); + } +#ifdef CY_DEBUG_DTR + printk("cyc:set_modem_info raising DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + CY_UNLOCK(info, flags); + } + if (clear & TIOCM_DTR) { + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); + } else { + cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); + } + +#ifdef CY_DEBUG_DTR + printk("cyc:set_modem_info dropping DTR\n"); + printk(" status: 0x%x, 0x%x\n", + cy_readb(base_addr+(CyMSVR1<<index)), + cy_readb(base_addr+(CyMSVR2<<index))); +#endif + CY_UNLOCK(info, flags); + } + } else { + base_addr = cy_card[card].base_addr; + + firm_id = cy_card[card].base_addr + ID_ADDRESS; + if (ISZLOADED(cy_card[card])) { + zfw_ctrl = cy_card[card].base_addr + (cy_readl(&firm_id->zfwctrl_addr) & 0xfffff); + board_ctrl = &zfw_ctrl->board_ctrl; + ch_ctrl = zfw_ctrl->ch_ctrl; + + if (set & TIOCM_RTS){ + CY_LOCK(info, flags); + cy_writel(&ch_ctrl[channel].rs_control, + cy_readl(&ch_ctrl[channel].rs_control) | C_RS_RTS); + CY_UNLOCK(info, flags); + } + if (clear & TIOCM_RTS) { + CY_LOCK(info, flags); + cy_writel(&ch_ctrl[channel].rs_control, + cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_RTS); + CY_UNLOCK(info, flags); + } + if (set & TIOCM_DTR){ + CY_LOCK(info, flags); + cy_writel(&ch_ctrl[channel].rs_control, + cy_readl(&ch_ctrl[channel].rs_control) | C_RS_DTR); +#ifdef CY_DEBUG_DTR + printk("cyc:set_modem_info raising Z DTR\n"); +#endif + CY_UNLOCK(info, flags); + } + if (clear & TIOCM_DTR) { + CY_LOCK(info, flags); + cy_writel(&ch_ctrl[channel].rs_control, + cy_readl(&ch_ctrl[channel].rs_control) & ~C_RS_DTR); +#ifdef CY_DEBUG_DTR + printk("cyc:set_modem_info clearing Z DTR\n"); +#endif + CY_UNLOCK(info, flags); + } + }else{ + return -ENODEV; + } + CY_LOCK(info, flags); + retval = cyz_issue_cmd(&cy_card[info->card], + channel, C_CM_IOCTLM,0L); + if (retval != 0){ + printk("cyc:set_modem_info retval on ttyC%d was %x\n", + info->line, retval); + } + CY_UNLOCK(info, flags); + } + return 0; +} /* cy_tiocmset */ + +/* + * cy_break() --- routine which turns the break handling on or off + */ +static void +cy_break(struct tty_struct *tty, int break_state) +{ + struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; + unsigned long flags; + + if (serial_paranoia_check(info, tty->name, "cy_break")) + return; + + CY_LOCK(info, flags); + if (!IS_CYC_Z(cy_card[info->card])) { + /* Let the transmit ISR take care of this (since it + requires stuffing characters into the output stream). + */ + if (break_state == -1) { + if (!info->breakon) { + info->breakon = 1; + if (!info->xmit_cnt) { + CY_UNLOCK(info, flags); + start_xmit(info); + CY_LOCK(info, flags); + } + } + } else { + if (!info->breakoff) { + info->breakoff = 1; + if (!info->xmit_cnt) { + CY_UNLOCK(info, flags); + start_xmit(info); + CY_LOCK(info, flags); + } + } + } + } else { + int retval; + + if (break_state == -1) { + retval = cyz_issue_cmd(&cy_card[info->card], + (info->line) - (cy_card[info->card].first_line), + C_CM_SET_BREAK, 0L); + if (retval != 0) { + printk("cyc:cy_break (set) retval on ttyC%d was %x\n", + info->line, retval); + } + } else { + retval = cyz_issue_cmd(&cy_card[info->card], + (info->line) - (cy_card[info->card].first_line), + C_CM_CLR_BREAK, 0L); + if (retval != 0) { + printk("cyc:cy_break (clr) retval on ttyC%d was %x\n", + info->line, retval); + } + } + } + CY_UNLOCK(info, flags); +} /* cy_break */ + +static int +get_mon_info(struct cyclades_port * info, struct cyclades_monitor __user * mon) +{ + + if(copy_to_user(mon, &info->mon, sizeof(struct cyclades_monitor))) + return -EFAULT; + info->mon.int_count = 0; + info->mon.char_count = 0; + info->mon.char_max = 0; + info->mon.char_last = 0; + return 0; +}/* get_mon_info */ + + +static int +set_threshold(struct cyclades_port * info, unsigned long value) +{ + void __iomem *base_addr; + int card,channel,chip,index; + unsigned long flags; + + card = info->card; + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + info->cor3 &= ~CyREC_FIFO; + info->cor3 |= value & CyREC_FIFO; + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCOR3<<index), info->cor3); + cyy_issue_cmd(base_addr,CyCOR_CHANGE|CyCOR3ch,index); + CY_UNLOCK(info, flags); + } else { + // Nothing to do! + } + return 0; +}/* set_threshold */ + + +static int +get_threshold(struct cyclades_port * info, unsigned long __user *value) +{ + void __iomem *base_addr; + int card,channel,chip,index; + unsigned long tmp; + + card = info->card; + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + tmp = cy_readb(base_addr+(CyCOR3<<index)) & CyREC_FIFO; + return put_user(tmp,value); + } else { + // Nothing to do! + return 0; + } +}/* get_threshold */ + + +static int +set_default_threshold(struct cyclades_port * info, unsigned long value) +{ + info->default_threshold = value & 0x0f; + return 0; +}/* set_default_threshold */ + + +static int +get_default_threshold(struct cyclades_port * info, unsigned long __user *value) +{ + return put_user(info->default_threshold,value); +}/* get_default_threshold */ + + +static int +set_timeout(struct cyclades_port * info, unsigned long value) +{ + void __iomem *base_addr; + int card,channel,chip,index; + unsigned long flags; + + card = info->card; + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyRTPR<<index), value & 0xff); + CY_UNLOCK(info, flags); + } else { + // Nothing to do! + } + return 0; +}/* set_timeout */ + + +static int +get_timeout(struct cyclades_port * info, unsigned long __user *value) +{ + void __iomem *base_addr; + int card,channel,chip,index; + unsigned long tmp; + + card = info->card; + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + tmp = cy_readb(base_addr+(CyRTPR<<index)); + return put_user(tmp,value); + } else { + // Nothing to do! + return 0; + } +}/* get_timeout */ + + +static int +set_default_timeout(struct cyclades_port * info, unsigned long value) +{ + info->default_timeout = value & 0xff; + return 0; +}/* set_default_timeout */ + + +static int +get_default_timeout(struct cyclades_port * info, unsigned long __user *value) +{ + return put_user(info->default_timeout,value); +}/* get_default_timeout */ + +/* + * This routine allows the tty driver to implement device- + * specific ioctl's. If the ioctl number passed in cmd is + * not recognized by the driver, it should return ENOIOCTLCMD. + */ +static int +cy_ioctl(struct tty_struct *tty, struct file * file, + unsigned int cmd, unsigned long arg) +{ + struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; + struct cyclades_icount cprev, cnow; /* kernel counter temps */ + struct serial_icounter_struct __user *p_cuser; /* user space */ + int ret_val = 0; + unsigned long flags; + void __user *argp = (void __user *)arg; + + if (serial_paranoia_check(info, tty->name, "cy_ioctl")) + return -ENODEV; + +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n", + info->line, cmd, arg); /* */ +#endif + + switch (cmd) { + case CYGETMON: + ret_val = get_mon_info(info, argp); + break; + case CYGETTHRESH: + ret_val = get_threshold(info, argp); + break; + case CYSETTHRESH: + ret_val = set_threshold(info, arg); + break; + case CYGETDEFTHRESH: + ret_val = get_default_threshold(info, argp); + break; + case CYSETDEFTHRESH: + ret_val = set_default_threshold(info, arg); + break; + case CYGETTIMEOUT: + ret_val = get_timeout(info, argp); + break; + case CYSETTIMEOUT: + ret_val = set_timeout(info, arg); + break; + case CYGETDEFTIMEOUT: + ret_val = get_default_timeout(info, argp); + break; + case CYSETDEFTIMEOUT: + ret_val = set_default_timeout(info, arg); + break; + case CYSETRFLOW: + info->rflow = (int)arg; + ret_val = 0; + break; + case CYGETRFLOW: + ret_val = info->rflow; + break; + case CYSETRTSDTR_INV: + info->rtsdtr_inv = (int)arg; + ret_val = 0; + break; + case CYGETRTSDTR_INV: + ret_val = info->rtsdtr_inv; + break; + case CYGETCARDINFO: + if (copy_to_user(argp, &cy_card[info->card], + sizeof (struct cyclades_card))) { + ret_val = -EFAULT; + break; + } + ret_val = 0; + break; + case CYGETCD1400VER: + ret_val = info->chip_rev; + break; +#ifndef CONFIG_CYZ_INTR + case CYZSETPOLLCYCLE: + cyz_polling_cycle = (arg * HZ) / 1000; + ret_val = 0; + break; + case CYZGETPOLLCYCLE: + ret_val = (cyz_polling_cycle * 1000) / HZ; + break; +#endif /* CONFIG_CYZ_INTR */ + case CYSETWAIT: + info->closing_wait = (unsigned short)arg * HZ/100; + ret_val = 0; + break; + case CYGETWAIT: + ret_val = info->closing_wait / (HZ/100); + break; + case TIOCGSERIAL: + ret_val = get_serial_info(info, argp); + break; + case TIOCSSERIAL: + ret_val = set_serial_info(info, argp); + break; + case TIOCSERGETLSR: /* Get line status register */ + ret_val = get_lsr_info(info, argp); + break; + /* + * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change + * - mask passed in arg for lines of interest + * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) + * Caller should use TIOCGICOUNT to see which one it was + */ + case TIOCMIWAIT: + CY_LOCK(info, flags); + /* note the counters on entry */ + cprev = info->icount; + CY_UNLOCK(info, flags); + while (1) { + interruptible_sleep_on(&info->delta_msr_wait); + /* see if a signal did it */ + if (signal_pending(current)) { + return -ERESTARTSYS; + } + + CY_LOCK(info, flags); + cnow = info->icount; /* atomic copy */ + CY_UNLOCK(info, flags); + + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) { + return -EIO; /* no change => error */ + } + if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || + ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || + ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || + ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { + return 0; + } + cprev = cnow; + } + /* NOTREACHED */ + + /* + * Get counter of input serial line interrupts (DCD,RI,DSR,CTS) + * Return: write counters to the user passed counter struct + * NB: both 1->0 and 0->1 transitions are counted except for + * RI where only 0->1 is counted. + */ + case TIOCGICOUNT: + CY_LOCK(info, flags); + cnow = info->icount; + CY_UNLOCK(info, flags); + p_cuser = argp; + ret_val = put_user(cnow.cts, &p_cuser->cts); + if (ret_val) return ret_val; + ret_val = put_user(cnow.dsr, &p_cuser->dsr); + if (ret_val) return ret_val; + ret_val = put_user(cnow.rng, &p_cuser->rng); + if (ret_val) return ret_val; + ret_val = put_user(cnow.dcd, &p_cuser->dcd); + if (ret_val) return ret_val; + ret_val = put_user(cnow.rx, &p_cuser->rx); + if (ret_val) return ret_val; + ret_val = put_user(cnow.tx, &p_cuser->tx); + if (ret_val) return ret_val; + ret_val = put_user(cnow.frame, &p_cuser->frame); + if (ret_val) return ret_val; + ret_val = put_user(cnow.overrun, &p_cuser->overrun); + if (ret_val) return ret_val; + ret_val = put_user(cnow.parity, &p_cuser->parity); + if (ret_val) return ret_val; + ret_val = put_user(cnow.brk, &p_cuser->brk); + if (ret_val) return ret_val; + ret_val = put_user(cnow.buf_overrun, &p_cuser->buf_overrun); + if (ret_val) return ret_val; + ret_val = 0; + break; + default: + ret_val = -ENOIOCTLCMD; + } + +#ifdef CY_DEBUG_OTHER + printk(" cyc:cy_ioctl done\n"); +#endif + + return ret_val; +} /* cy_ioctl */ + + +/* + * This routine allows the tty driver to be notified when + * device's termios settings have changed. Note that a + * well-designed tty driver should be prepared to accept the case + * where old == NULL, and try to do something rational. + */ +static void +cy_set_termios(struct tty_struct *tty, struct termios * old_termios) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_set_termios ttyC%d\n", info->line); +#endif + + if ((tty->termios->c_cflag == old_termios->c_cflag) && + ((tty->termios->c_iflag & (IXON|IXANY)) == + (old_termios->c_iflag & (IXON|IXANY)))) + return; + set_line_char(info); + + if ((old_termios->c_cflag & CRTSCTS) && + !(tty->termios->c_cflag & CRTSCTS)) { + tty->hw_stopped = 0; + cy_start(tty); + } +#if 0 + /* + * No need to wake up processes in open wait, since they + * sample the CLOCAL flag once, and don't recheck it. + * XXX It's not clear whether the current behavior is correct + * or not. Hence, this may change..... + */ + if (!(old_termios->c_cflag & CLOCAL) && + (tty->termios->c_cflag & CLOCAL)) + wake_up_interruptible(&info->open_wait); +#endif + + return; +} /* cy_set_termios */ + +/* This function is used to send a high-priority XON/XOFF character to + the device. +*/ +static void +cy_send_xchar (struct tty_struct *tty, char ch) +{ + struct cyclades_port *info = (struct cyclades_port *) tty->driver_data; + int card, channel; + + if (serial_paranoia_check (info, tty->name, "cy_send_xchar")) + return; + + info->x_char = ch; + + if (ch) + cy_start (tty); + + card = info->card; + channel = info->line - cy_card[card].first_line; + + if (IS_CYC_Z (cy_card[card])) { + if (ch == STOP_CHAR (tty)) + cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXOFF, 0L); + else if (ch == START_CHAR (tty)) + cyz_issue_cmd (&cy_card[card], channel, C_CM_SENDXON, 0L); + } +} + +/* This routine is called by the upper-layer tty layer to signal + that incoming characters should be throttled because the input + buffers are close to full. + */ +static void +cy_throttle(struct tty_struct * tty) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + unsigned long flags; + void __iomem *base_addr; + int card,chip,channel,index; + +#ifdef CY_DEBUG_THROTTLE + char buf[64]; + + printk("cyc:throttle %s: %d....ttyC%d\n", + tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty), info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_throttle")){ + return; + } + + card = info->card; + + if (I_IXOFF(tty)) { + if (!IS_CYC_Z (cy_card[card])) + cy_send_xchar (tty, STOP_CHAR (tty)); + else + info->throttle = 1; + } + + if (tty->termios->c_cflag & CRTSCTS) { + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR2<<index), ~CyDTR); + } else { + cy_writeb(base_addr+(CyMSVR1<<index), ~CyRTS); + } + CY_UNLOCK(info, flags); + } else { + info->throttle = 1; + } + } + + return; +} /* cy_throttle */ + + +/* + * This routine notifies the tty driver that it should signal + * that characters can now be sent to the tty without fear of + * overrunning the input buffers of the line disciplines. + */ +static void +cy_unthrottle(struct tty_struct * tty) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + unsigned long flags; + void __iomem *base_addr; + int card,chip,channel,index; + +#ifdef CY_DEBUG_THROTTLE + char buf[64]; + + printk("cyc:unthrottle %s: %d....ttyC%d\n", + tty_name(tty, buf), + tty->ldisc.chars_in_buffer(tty), info->line); +#endif + + if (serial_paranoia_check(info, tty->name, "cy_unthrottle")){ + return; + } + + if (I_IXOFF(tty)) { + if (info->x_char) + info->x_char = 0; + else + cy_send_xchar (tty, START_CHAR (tty)); + } + + if (tty->termios->c_cflag & CRTSCTS) { + card = info->card; + channel = info->line - cy_card[card].first_line; + if (!IS_CYC_Z(cy_card[card])) { + chip = channel>>2; + channel &= 0x03; + index = cy_card[card].bus_index; + base_addr = cy_card[card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), (u_char)channel); + if (info->rtsdtr_inv) { + cy_writeb(base_addr+(CyMSVR2<<index), CyDTR); + } else { + cy_writeb(base_addr+(CyMSVR1<<index), CyRTS); + } + CY_UNLOCK(info, flags); + } else { + info->throttle = 0; + } + } + + return; +} /* cy_unthrottle */ + + +/* cy_start and cy_stop provide software output flow control as a + function of XON/XOFF, software CTS, and other such stuff. +*/ +static void +cy_stop(struct tty_struct *tty) +{ + struct cyclades_card *cinfo; + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + void __iomem *base_addr; + int chip,channel,index; + unsigned long flags; + +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_stop ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_stop")) + return; + + cinfo = &cy_card[info->card]; + channel = info->line - cinfo->first_line; + if (!IS_CYC_Z(*cinfo)) { + index = cinfo->bus_index; + chip = channel>>2; + channel &= 0x03; + base_addr = cy_card[info->card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), + (u_char)(channel & 0x0003)); /* index channel */ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) & ~CyTxRdy); + CY_UNLOCK(info, flags); + } else { + // Nothing to do! + } + + return; +} /* cy_stop */ + + +static void +cy_start(struct tty_struct *tty) +{ + struct cyclades_card *cinfo; + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + void __iomem *base_addr; + int chip,channel,index; + unsigned long flags; + +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_start ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_start")) + return; + + cinfo = &cy_card[info->card]; + channel = info->line - cinfo->first_line; + index = cinfo->bus_index; + if (!IS_CYC_Z(*cinfo)) { + chip = channel>>2; + channel &= 0x03; + base_addr = cy_card[info->card].base_addr + (cy_chip_offset[chip]<<index); + + CY_LOCK(info, flags); + cy_writeb(base_addr+(CyCAR<<index), + (u_char)(channel & 0x0003)); /* index channel */ + cy_writeb(base_addr+(CySRER<<index), + cy_readb(base_addr+(CySRER<<index)) | CyTxRdy); + CY_UNLOCK(info, flags); + } else { + // Nothing to do! + } + + return; +} /* cy_start */ + + +static void +cy_flush_buffer(struct tty_struct *tty) +{ + struct cyclades_port *info = (struct cyclades_port *)tty->driver_data; + int card, channel, retval; + unsigned long flags; + +#ifdef CY_DEBUG_IO + printk("cyc:cy_flush_buffer ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_flush_buffer")) + return; + + card = info->card; + channel = (info->line) - (cy_card[card].first_line); + + CY_LOCK(info, flags); + info->xmit_cnt = info->xmit_head = info->xmit_tail = 0; + CY_UNLOCK(info, flags); + + if (IS_CYC_Z(cy_card[card])) { /* If it is a Z card, flush the on-board + buffers as well */ + CY_LOCK(info, flags); + retval = cyz_issue_cmd(&cy_card[card], channel, C_CM_FLUSH_TX, 0L); + if (retval != 0) { + printk("cyc: flush_buffer retval on ttyC%d was %x\n", + info->line, retval); + } + CY_UNLOCK(info, flags); + } + tty_wakeup(tty); + wake_up_interruptible(&tty->write_wait); +} /* cy_flush_buffer */ + + +/* + * cy_hangup() --- called by tty_hangup() when a hangup is signaled. + */ +static void +cy_hangup(struct tty_struct *tty) +{ + struct cyclades_port * info = (struct cyclades_port *)tty->driver_data; + +#ifdef CY_DEBUG_OTHER + printk("cyc:cy_hangup ttyC%d\n", info->line); /* */ +#endif + + if (serial_paranoia_check(info, tty->name, "cy_hangup")) + return; + + cy_flush_buffer(tty); + shutdown(info); + info->event = 0; + info->count = 0; +#ifdef CY_DEBUG_COUNT + printk("cyc:cy_hangup (%d): setting count to 0\n", current->pid); +#endif + info->tty = NULL; + info->flags &= ~ASYNC_NORMAL_ACTIVE; + wake_up_interruptible(&info->open_wait); +} /* cy_hangup */ + + +/* + * --------------------------------------------------------------------- + * cy_init() and friends + * + * cy_init() is called at boot-time to initialize the serial driver. + * --------------------------------------------------------------------- + */ + +/* initialize chips on Cyclom-Y card -- return number of valid + chips (which is number of ports/4) */ +static unsigned short __init +cyy_init_card(void __iomem *true_base_addr,int index) +{ + unsigned int chip_number; + void __iomem *base_addr; + + cy_writeb(true_base_addr+(Cy_HwReset<<index), 0); + /* Cy_HwReset is 0x1400 */ + cy_writeb(true_base_addr+(Cy_ClrIntr<<index), 0); + /* Cy_ClrIntr is 0x1800 */ + udelay(500L); + + for(chip_number=0; chip_number<CyMAX_CHIPS_PER_CARD; chip_number++){ + base_addr = true_base_addr + (cy_chip_offset[chip_number]<<index); + mdelay(1); + if(cy_readb(base_addr+(CyCCR<<index)) != 0x00){ + /************* + printk(" chip #%d at %#6lx is never idle (CCR != 0)\n", + chip_number, (unsigned long)base_addr); + *************/ + return chip_number; + } + + cy_writeb(base_addr+(CyGFRCR<<index), 0); + udelay(10L); + + /* The Cyclom-16Y does not decode address bit 9 and therefore + cannot distinguish between references to chip 0 and a non- + existent chip 4. If the preceding clearing of the supposed + chip 4 GFRCR register appears at chip 0, there is no chip 4 + and this must be a Cyclom-16Y, not a Cyclom-32Ye. + */ + if (chip_number == 4 + && cy_readb(true_base_addr + + (cy_chip_offset[0]<<index) + + (CyGFRCR<<index)) == 0){ + return chip_number; + } + + cy_writeb(base_addr+(CyCCR<<index), CyCHIP_RESET); + mdelay(1); + + if(cy_readb(base_addr+(CyGFRCR<<index)) == 0x00){ + /* + printk(" chip #%d at %#6lx is not responding ", + chip_number, (unsigned long)base_addr); + printk("(GFRCR stayed 0)\n", + */ + return chip_number; + } + if((0xf0 & (cy_readb(base_addr+(CyGFRCR<<index)))) != 0x40){ + /* + printk(" chip #%d at %#6lx is not valid (GFRCR == %#2x)\n", + chip_number, (unsigned long)base_addr, + base_addr[CyGFRCR<<index]); + */ + return chip_number; + } + cy_writeb(base_addr+(CyGCR<<index), CyCH0_SERIAL); + if (cy_readb(base_addr+(CyGFRCR<<index)) >= CD1400_REV_J){ + /* It is a CD1400 rev. J or later */ + /* Impossible to reach 5ms with this chip. + Changed to 2ms instead (f = 500 Hz). */ + cy_writeb(base_addr+(CyPPR<<index), CyCLOCK_60_2MS); + } else { + /* f = 200 Hz */ + cy_writeb(base_addr+(CyPPR<<index), CyCLOCK_25_5MS); + } + + /* + printk(" chip #%d at %#6lx is rev 0x%2x\n", + chip_number, (unsigned long)base_addr, + cy_readb(base_addr+(CyGFRCR<<index))); + */ + } + return chip_number; +} /* cyy_init_card */ + +/* + * --------------------------------------------------------------------- + * cy_detect_isa() - Probe for Cyclom-Y/ISA boards. + * sets global variables and return the number of ISA boards found. + * --------------------------------------------------------------------- + */ +static int __init +cy_detect_isa(void) +{ +#ifdef CONFIG_ISA + unsigned short cy_isa_irq,nboard; + void __iomem *cy_isa_address; + unsigned short i,j,cy_isa_nchan; +#ifdef MODULE + int isparam = 0; +#endif + + nboard = 0; + +#ifdef MODULE + /* Check for module parameters */ + for(i = 0 ; i < NR_CARDS; i++) { + if (maddr[i] || i) { + isparam = 1; + cy_isa_addresses[i] = maddr[i]; + } + if (!maddr[i]) + break; + } +#endif + + /* scan the address table probing for Cyclom-Y/ISA boards */ + for (i = 0 ; i < NR_ISA_ADDRS ; i++) { + unsigned int isa_address = cy_isa_addresses[i]; + if (isa_address == 0x0000) { + return(nboard); + } + + /* probe for CD1400... */ + cy_isa_address = ioremap(isa_address, CyISA_Ywin); + cy_isa_nchan = CyPORTS_PER_CHIP * + cyy_init_card(cy_isa_address,0); + if (cy_isa_nchan == 0) { + continue; + } + +#ifdef MODULE + if (isparam && irq[i]) + cy_isa_irq = irq[i]; + else +#endif + /* find out the board's irq by probing */ + cy_isa_irq = detect_isa_irq(cy_isa_address); + if (cy_isa_irq == 0) { + printk("Cyclom-Y/ISA found at 0x%lx ", + (unsigned long) cy_isa_address); + printk("but the IRQ could not be detected.\n"); + continue; + } + + if((cy_next_channel+cy_isa_nchan) > NR_PORTS) { + printk("Cyclom-Y/ISA found at 0x%lx ", + (unsigned long) cy_isa_address); + printk("but no more channels are available.\n"); + printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); + return(nboard); + } + /* fill the next cy_card structure available */ + for (j = 0 ; j < NR_CARDS ; j++) { + if (cy_card[j].base_addr == 0) break; + } + if (j == NR_CARDS) { /* no more cy_cards available */ + printk("Cyclom-Y/ISA found at 0x%lx ", + (unsigned long) cy_isa_address); + printk("but no more cards can be used .\n"); + printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); + return(nboard); + } + + /* allocate IRQ */ + if(request_irq(cy_isa_irq, cyy_interrupt, + SA_INTERRUPT, "Cyclom-Y", &cy_card[j])) + { + printk("Cyclom-Y/ISA found at 0x%lx ", + (unsigned long) cy_isa_address); + printk("but could not allocate IRQ#%d.\n", + cy_isa_irq); + return(nboard); + } + + /* set cy_card */ + cy_card[j].base_addr = cy_isa_address; + cy_card[j].ctl_addr = NULL; + cy_card[j].irq = (int) cy_isa_irq; + cy_card[j].bus_index = 0; + cy_card[j].first_line = cy_next_channel; + cy_card[j].num_chips = cy_isa_nchan/4; + nboard++; + + /* print message */ + printk("Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d, ", + j+1, (unsigned long) cy_isa_address, + (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)), + cy_isa_irq); + printk("%d channels starting from port %d.\n", + cy_isa_nchan, cy_next_channel); + cy_next_channel += cy_isa_nchan; + } + return(nboard); +#else + return(0); +#endif /* CONFIG_ISA */ +} /* cy_detect_isa */ + +static void +plx_init(void __iomem *addr, uclong initctl) +{ + /* Reset PLX */ + cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x40000000); + udelay(100L); + cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x40000000); + + /* Reload Config. Registers from EEPROM */ + cy_writel(addr + initctl, cy_readl(addr + initctl) | 0x20000000); + udelay(100L); + cy_writel(addr + initctl, cy_readl(addr + initctl) & ~0x20000000); +} + +/* + * --------------------------------------------------------------------- + * cy_detect_pci() - Test PCI bus presence and Cyclom-Ye/PCI. + * sets global variables and return the number of PCI boards found. + * --------------------------------------------------------------------- + */ +static int __init +cy_detect_pci(void) +{ +#ifdef CONFIG_PCI + + struct pci_dev *pdev = NULL; + unsigned char cyy_rev_id; + unsigned char cy_pci_irq = 0; + uclong cy_pci_phys0, cy_pci_phys2; + void __iomem *cy_pci_addr0, *cy_pci_addr2; + unsigned short i,j,cy_pci_nchan, plx_ver; + unsigned short device_id,dev_index = 0; + uclong mailbox; + uclong ZeIndex = 0; + void __iomem *Ze_addr0[NR_CARDS], *Ze_addr2[NR_CARDS]; + uclong Ze_phys0[NR_CARDS], Ze_phys2[NR_CARDS]; + unsigned char Ze_irq[NR_CARDS]; + struct pci_dev *Ze_pdev[NR_CARDS]; + + for (i = 0; i < NR_CARDS; i++) { + /* look for a Cyclades card by vendor and device id */ + while((device_id = cy_pci_dev_id[dev_index]) != 0) { + if((pdev = pci_get_device(PCI_VENDOR_ID_CYCLADES, + device_id, pdev)) == NULL) { + dev_index++; /* try next device id */ + } else { + break; /* found a board */ + } + } + + if (device_id == 0) + break; + + if (pci_enable_device(pdev)) + continue; + + /* read PCI configuration area */ + cy_pci_irq = pdev->irq; + cy_pci_phys0 = pci_resource_start(pdev, 0); + cy_pci_phys2 = pci_resource_start(pdev, 2); + pci_read_config_byte(pdev, PCI_REVISION_ID, &cyy_rev_id); + + device_id &= ~PCI_DEVICE_ID_MASK; + + if ((device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) + || (device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi)){ +#ifdef CY_PCI_DEBUG + printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ", + pdev->bus->number, pdev->devfn); + printk("rev_id=%d) IRQ%d\n", + cyy_rev_id, (int)cy_pci_irq); + printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n", + (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); +#endif + + if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { + printk(" Warning: PCI I/O bit incorrectly set. " + "Ignoring it...\n"); + pdev->resource[2].flags &= ~IORESOURCE_IO; + } + + /* Although we don't use this I/O region, we should + request it from the kernel anyway, to avoid problems + with other drivers accessing it. */ + if (pci_request_regions(pdev, "Cyclom-Y") != 0) { + printk(KERN_ERR "cyclades: failed to reserve PCI resources\n"); + continue; + } + +#if defined(__alpha__) + if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */ + printk("Cyclom-Y/PCI (bus=0x0%x, pci_id=0x%x, ", + pdev->bus->number, pdev->devfn); + printk("rev_id=%d) IRQ%d\n", + cyy_rev_id, (int)cy_pci_irq); + printk("Cyclom-Y/PCI:found winaddr=0x%lx ctladdr=0x%lx\n", + (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); + printk("Cyclom-Y/PCI not supported for low addresses in " + "Alpha systems.\n"); + i--; + continue; + } +#endif + cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Yctl); + cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ywin); + +#ifdef CY_PCI_DEBUG + printk("Cyclom-Y/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", + (u_long)cy_pci_addr2, (u_long)cy_pci_addr0); +#endif + cy_pci_nchan = (unsigned short)(CyPORTS_PER_CHIP * + cyy_init_card(cy_pci_addr2, 1)); + if(cy_pci_nchan == 0) { + printk("Cyclom-Y PCI host card with "); + printk("no Serial-Modules at 0x%lx.\n", + (ulong) cy_pci_phys2); + i--; + continue; + } + if((cy_next_channel+cy_pci_nchan) > NR_PORTS) { + printk("Cyclom-Y/PCI found at 0x%lx ", + (ulong) cy_pci_phys2); + printk("but no channels are available.\n"); + printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); + return(i); + } + /* fill the next cy_card structure available */ + for (j = 0 ; j < NR_CARDS ; j++) { + if (cy_card[j].base_addr == 0) break; + } + if (j == NR_CARDS) { /* no more cy_cards available */ + printk("Cyclom-Y/PCI found at 0x%lx ", + (ulong) cy_pci_phys2); + printk("but no more cards can be used.\n"); + printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); + return(i); + } + + /* allocate IRQ */ + if(request_irq(cy_pci_irq, cyy_interrupt, + SA_SHIRQ, "Cyclom-Y", &cy_card[j])) + { + printk("Cyclom-Y/PCI found at 0x%lx ", + (ulong) cy_pci_phys2); + printk("but could not allocate IRQ%d.\n", + cy_pci_irq); + return(i); + } + + /* set cy_card */ + cy_card[j].base_phys = (ulong)cy_pci_phys2; + cy_card[j].ctl_phys = (ulong)cy_pci_phys0; + cy_card[j].base_addr = cy_pci_addr2; + cy_card[j].ctl_addr = cy_pci_addr0; + cy_card[j].irq = (int) cy_pci_irq; + cy_card[j].bus_index = 1; + cy_card[j].first_line = cy_next_channel; + cy_card[j].num_chips = cy_pci_nchan/4; + cy_card[j].pdev = pdev; + + /* enable interrupts in the PCI interface */ + plx_ver = cy_readb(cy_pci_addr2 + CyPLX_VER) & 0x0f; + switch (plx_ver) { + case PLX_9050: + + cy_writeb(cy_pci_addr0+0x4c, 0x43); + break; + + case PLX_9060: + case PLX_9080: + default: /* Old boards, use PLX_9060 */ + + plx_init(cy_pci_addr0, 0x6c); + /* For some yet unknown reason, once the PLX9060 reloads + the EEPROM, the IRQ is lost and, thus, we have to + re-write it to the PCI config. registers. + This will remain here until we find a permanent fix. */ + pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); + + cy_writew(cy_pci_addr0+0x68, + cy_readw(cy_pci_addr0+0x68)|0x0900); + break; + } + + /* print message */ + printk("Cyclom-Y/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", + j+1, + (ulong)cy_pci_phys2, + (ulong)(cy_pci_phys2 + CyPCI_Ywin - 1), + (int)cy_pci_irq); + printk("%d channels starting from port %d.\n", + cy_pci_nchan, cy_next_channel); + + cy_next_channel += cy_pci_nchan; + }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo){ + /* print message */ + printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ", + pdev->bus->number, pdev->devfn); + printk("rev_id=%d) IRQ%d\n", + cyy_rev_id, (int)cy_pci_irq); + printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n", + (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); + printk("Cyclades-Z/PCI not supported for low addresses\n"); + break; + }else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi){ +#ifdef CY_PCI_DEBUG + printk("Cyclades-Z/PCI (bus=0x0%x, pci_id=0x%x, ", + pdev->bus->number, pdev->devfn); + printk("rev_id=%d) IRQ%d\n", + cyy_rev_id, (int)cy_pci_irq); + printk("Cyclades-Z/PCI: found winaddr=0x%lx ctladdr=0x%lx\n", + (ulong)cy_pci_phys2, (ulong)cy_pci_phys0); +#endif + cy_pci_addr0 = ioremap(cy_pci_phys0, CyPCI_Zctl); + + /* Disable interrupts on the PLX before resetting it */ + cy_writew(cy_pci_addr0+0x68, + cy_readw(cy_pci_addr0+0x68) & ~0x0900); + + plx_init(cy_pci_addr0, 0x6c); + /* For some yet unknown reason, once the PLX9060 reloads + the EEPROM, the IRQ is lost and, thus, we have to + re-write it to the PCI config. registers. + This will remain here until we find a permanent fix. */ + pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, cy_pci_irq); + + mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *) + cy_pci_addr0)->mail_box_0); + + if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) { + printk(" Warning: PCI I/O bit incorrectly set. " + "Ignoring it...\n"); + pdev->resource[2].flags &= ~IORESOURCE_IO; + } + + /* Although we don't use this I/O region, we should + request it from the kernel anyway, to avoid problems + with other drivers accessing it. */ + if (pci_request_regions(pdev, "Cyclades-Z") != 0) { + printk(KERN_ERR "cyclades: failed to reserve PCI resources\n"); + continue; + } + + if (mailbox == ZE_V1) { + cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Ze_win); + if (ZeIndex == NR_CARDS) { + printk("Cyclades-Ze/PCI found at 0x%lx ", + (ulong)cy_pci_phys2); + printk("but no more cards can be used.\n"); + printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); + } else { + Ze_phys0[ZeIndex] = cy_pci_phys0; + Ze_phys2[ZeIndex] = cy_pci_phys2; + Ze_addr0[ZeIndex] = cy_pci_addr0; + Ze_addr2[ZeIndex] = cy_pci_addr2; + Ze_irq[ZeIndex] = cy_pci_irq; + Ze_pdev[ZeIndex] = pdev; + ZeIndex++; + } + i--; + continue; + } else { + cy_pci_addr2 = ioremap(cy_pci_phys2, CyPCI_Zwin); + } + +#ifdef CY_PCI_DEBUG + printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", + (ulong)cy_pci_addr2, (ulong)cy_pci_addr0); + if (mailbox == ZO_V1) { + cy_writel(&((struct RUNTIME_9060 *) + (cy_pci_addr0))->loc_addr_base, WIN_CREG); + PAUSE + printk("Cyclades-8Zo/PCI: FPGA id %lx, ver %lx\n", + (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *) + (cy_pci_addr2))->fpga_id)), + (ulong)(0xff & cy_readl(&((struct CUSTOM_REG *) + (cy_pci_addr2))->fpga_version))); + cy_writel(&((struct RUNTIME_9060 *) + (cy_pci_addr0))->loc_addr_base, WIN_RAM); + } else { + printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n"); + } +#endif + /* The following clears the firmware id word. This ensures + that the driver will not attempt to talk to the board + until it has been properly initialized. + */ + PAUSE + if ((mailbox == ZO_V1) || (mailbox == ZO_V2)) + cy_writel(cy_pci_addr2 + ID_ADDRESS, 0L); + + /* This must be a Cyclades-8Zo/PCI. The extendable + version will have a different device_id and will + be allocated its maximum number of ports. */ + cy_pci_nchan = 8; + + if((cy_next_channel+cy_pci_nchan) > NR_PORTS) { + printk("Cyclades-8Zo/PCI found at 0x%lx ", + (ulong)cy_pci_phys2); + printk("but no channels are available.\n"); + printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); + return(i); + } + + /* fill the next cy_card structure available */ + for (j = 0 ; j < NR_CARDS ; j++) { + if (cy_card[j].base_addr == 0) break; + } + if (j == NR_CARDS) { /* no more cy_cards available */ + printk("Cyclades-8Zo/PCI found at 0x%lx ", + (ulong)cy_pci_phys2); + printk("but no more cards can be used.\n"); + printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); + return(i); + } + +#ifdef CONFIG_CYZ_INTR + /* allocate IRQ only if board has an IRQ */ + if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) { + if(request_irq(cy_pci_irq, cyz_interrupt, + SA_SHIRQ, "Cyclades-Z", &cy_card[j])) + { + printk("Cyclom-8Zo/PCI found at 0x%lx ", + (ulong) cy_pci_phys2); + printk("but could not allocate IRQ%d.\n", + cy_pci_irq); + return(i); + } + } +#endif /* CONFIG_CYZ_INTR */ + + + /* set cy_card */ + cy_card[j].base_phys = cy_pci_phys2; + cy_card[j].ctl_phys = cy_pci_phys0; + cy_card[j].base_addr = cy_pci_addr2; + cy_card[j].ctl_addr = cy_pci_addr0; + cy_card[j].irq = (int) cy_pci_irq; + cy_card[j].bus_index = 1; + cy_card[j].first_line = cy_next_channel; + cy_card[j].num_chips = -1; + cy_card[j].pdev = pdev; + + /* print message */ +#ifdef CONFIG_CYZ_INTR + /* don't report IRQ if board is no IRQ */ + if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) + printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", + j+1,(ulong)cy_pci_phys2, + (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1), + (int)cy_pci_irq); + else +#endif /* CONFIG_CYZ_INTR */ + printk("Cyclades-8Zo/PCI #%d: 0x%lx-0x%lx, ", + j+1,(ulong)cy_pci_phys2, + (ulong)(cy_pci_phys2 + CyPCI_Zwin - 1)); + + printk("%d channels starting from port %d.\n", + cy_pci_nchan,cy_next_channel); + cy_next_channel += cy_pci_nchan; + } + } + + for (; ZeIndex != 0 && i < NR_CARDS; i++) { + cy_pci_phys0 = Ze_phys0[0]; + cy_pci_phys2 = Ze_phys2[0]; + cy_pci_addr0 = Ze_addr0[0]; + cy_pci_addr2 = Ze_addr2[0]; + cy_pci_irq = Ze_irq[0]; + pdev = Ze_pdev[0]; + for (j = 0 ; j < ZeIndex-1 ; j++) { + Ze_phys0[j] = Ze_phys0[j+1]; + Ze_phys2[j] = Ze_phys2[j+1]; + Ze_addr0[j] = Ze_addr0[j+1]; + Ze_addr2[j] = Ze_addr2[j+1]; + Ze_irq[j] = Ze_irq[j+1]; + Ze_pdev[j] = Ze_pdev[j+1]; + } + ZeIndex--; + mailbox = (uclong)cy_readl(&((struct RUNTIME_9060 __iomem *) + cy_pci_addr0)->mail_box_0); +#ifdef CY_PCI_DEBUG + printk("Cyclades-Z/PCI: relocate winaddr=0x%lx ctladdr=0x%lx\n", + (ulong)cy_pci_addr2, (ulong)cy_pci_addr0); + printk("Cyclades-Z/PCI: New Cyclades-Z board. FPGA not loaded\n"); +#endif + PAUSE + /* This must be the new Cyclades-Ze/PCI. */ + cy_pci_nchan = ZE_V1_NPORTS; + + if((cy_next_channel+cy_pci_nchan) > NR_PORTS) { + printk("Cyclades-Ze/PCI found at 0x%lx ", + (ulong)cy_pci_phys2); + printk("but no channels are available.\n"); + printk("Change NR_PORTS in cyclades.c and recompile kernel.\n"); + return(i); + } + + /* fill the next cy_card structure available */ + for (j = 0 ; j < NR_CARDS ; j++) { + if (cy_card[j].base_addr == 0) break; + } + if (j == NR_CARDS) { /* no more cy_cards available */ + printk("Cyclades-Ze/PCI found at 0x%lx ", + (ulong)cy_pci_phys2); + printk("but no more cards can be used.\n"); + printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); + return(i); + } + +#ifdef CONFIG_CYZ_INTR + /* allocate IRQ only if board has an IRQ */ + if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) { + if(request_irq(cy_pci_irq, cyz_interrupt, + SA_SHIRQ, "Cyclades-Z", &cy_card[j])) + { + printk("Cyclom-Ze/PCI found at 0x%lx ", + (ulong) cy_pci_phys2); + printk("but could not allocate IRQ%d.\n", + cy_pci_irq); + return(i); + } + } +#endif /* CONFIG_CYZ_INTR */ + + /* set cy_card */ + cy_card[j].base_phys = cy_pci_phys2; + cy_card[j].ctl_phys = cy_pci_phys0; + cy_card[j].base_addr = cy_pci_addr2; + cy_card[j].ctl_addr = cy_pci_addr0; + cy_card[j].irq = (int) cy_pci_irq; + cy_card[j].bus_index = 1; + cy_card[j].first_line = cy_next_channel; + cy_card[j].num_chips = -1; + cy_card[j].pdev = pdev; + + /* print message */ +#ifdef CONFIG_CYZ_INTR + /* don't report IRQ if board is no IRQ */ + if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) + printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, IRQ%d, ", + j+1,(ulong)cy_pci_phys2, + (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1), + (int)cy_pci_irq); + else +#endif /* CONFIG_CYZ_INTR */ + printk("Cyclades-Ze/PCI #%d: 0x%lx-0x%lx, ", + j+1,(ulong)cy_pci_phys2, + (ulong)(cy_pci_phys2 + CyPCI_Ze_win - 1)); + + printk("%d channels starting from port %d.\n", + cy_pci_nchan,cy_next_channel); + cy_next_channel += cy_pci_nchan; + } + if (ZeIndex != 0) { + printk("Cyclades-Ze/PCI found at 0x%x ", + (unsigned int) Ze_phys2[0]); + printk("but no more cards can be used.\n"); + printk("Change NR_CARDS in cyclades.c and recompile kernel.\n"); + } + return(i); +#else + return(0); +#endif /* ifdef CONFIG_PCI */ +} /* cy_detect_pci */ + + +/* + * This routine prints out the appropriate serial driver version number + * and identifies which options were configured into this driver. + */ +static inline void +show_version(void) +{ + char *rcsvers, *rcsdate, *tmp; + rcsvers = strchr(rcsid, ' '); rcsvers++; + tmp = strchr(rcsvers, ' '); *tmp++ = '\0'; + rcsdate = strchr(tmp, ' '); rcsdate++; + tmp = strrchr(rcsdate, ' '); *tmp = '\0'; + printk("Cyclades driver %s %s\n", + rcsvers, rcsdate); + printk(" built %s %s\n", + __DATE__, __TIME__); +} /* show_version */ + +static int +cyclades_get_proc_info(char *buf, char **start, off_t offset, int length, + int *eof, void *data) +{ + struct cyclades_port *info; + int i; + int len=0; + off_t begin=0; + off_t pos=0; + int size; + __u32 cur_jifs = jiffies; + + size = sprintf(buf, "Dev TimeOpen BytesOut IdleOut BytesIn IdleIn Overruns Ldisc\n"); + + pos += size; + len += size; + + /* Output one line for each known port */ + for (i = 0; i < NR_PORTS && cy_port[i].line >= 0; i++) { + info = &cy_port[i]; + + if (info->count) + size = sprintf(buf+len, + "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n", + info->line, + JIFFIES_DIFF(info->idle_stats.in_use, cur_jifs) / HZ, + info->idle_stats.xmit_bytes, + JIFFIES_DIFF(info->idle_stats.xmit_idle, cur_jifs) / HZ, + info->idle_stats.recv_bytes, + JIFFIES_DIFF(info->idle_stats.recv_idle, cur_jifs) / HZ, + info->idle_stats.overruns, + (long) info->tty->ldisc.num); + else + size = sprintf(buf+len, + "%3d %8lu %10lu %8lu %10lu %8lu %9lu %6ld\n", + info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L); + len += size; + pos = begin + len; + + if (pos < offset) { + len = 0; + begin = pos; + } + if (pos > offset + length) + goto done; + } + *eof = 1; +done: + *start = buf + (offset - begin); /* Start of wanted data */ + len -= (offset - begin); /* Start slop */ + if (len > length) + len = length; /* Ending slop */ + if (len < 0) + len = 0; + return len; +} + +/* The serial driver boot-time initialization code! + Hardware I/O ports are mapped to character special devices on a + first found, first allocated manner. That is, this code searches + for Cyclom cards in the system. As each is found, it is probed + to discover how many chips (and thus how many ports) are present. + These ports are mapped to the tty ports 32 and upward in monotonic + fashion. If an 8-port card is replaced with a 16-port card, the + port mapping on a following card will shift. + + This approach is different from what is used in the other serial + device driver because the Cyclom is more properly a multiplexer, + not just an aggregation of serial ports on one card. + + If there are more cards with more ports than have been + statically allocated above, a warning is printed and the + extra ports are ignored. + */ + +static struct tty_operations cy_ops = { + .open = cy_open, + .close = cy_close, + .write = cy_write, + .put_char = cy_put_char, + .flush_chars = cy_flush_chars, + .write_room = cy_write_room, + .chars_in_buffer = cy_chars_in_buffer, + .flush_buffer = cy_flush_buffer, + .ioctl = cy_ioctl, + .throttle = cy_throttle, + .unthrottle = cy_unthrottle, + .set_termios = cy_set_termios, + .stop = cy_stop, + .start = cy_start, + .hangup = cy_hangup, + .break_ctl = cy_break, + .wait_until_sent = cy_wait_until_sent, + .read_proc = cyclades_get_proc_info, + .tiocmget = cy_tiocmget, + .tiocmset = cy_tiocmset, +}; + +static int __init +cy_init(void) +{ + struct cyclades_port *info; + struct cyclades_card *cinfo; + int number_z_boards = 0; + int board,port,i,index; + unsigned long mailbox; + unsigned short chip_number; + int nports; + + cy_serial_driver = alloc_tty_driver(NR_PORTS); + if (!cy_serial_driver) + return -ENOMEM; + show_version(); + + /* Initialize the tty_driver structure */ + + cy_serial_driver->owner = THIS_MODULE; + cy_serial_driver->driver_name = "cyclades"; + cy_serial_driver->name = "ttyC"; + cy_serial_driver->devfs_name = "tts/C"; + cy_serial_driver->major = CYCLADES_MAJOR; + cy_serial_driver->minor_start = 0; + cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL; + cy_serial_driver->subtype = SERIAL_TYPE_NORMAL; + cy_serial_driver->init_termios = tty_std_termios; + cy_serial_driver->init_termios.c_cflag = + B9600 | CS8 | CREAD | HUPCL | CLOCAL; + cy_serial_driver->flags = TTY_DRIVER_REAL_RAW; + tty_set_operations(cy_serial_driver, &cy_ops); + + if (tty_register_driver(cy_serial_driver)) + panic("Couldn't register Cyclades serial driver\n"); + + for (i = 0; i < NR_CARDS; i++) { + /* base_addr=0 indicates board not found */ + cy_card[i].base_addr = NULL; + } + + /* the code below is responsible to find the boards. Each different + type of board has its own detection routine. If a board is found, + the next cy_card structure available is set by the detection + routine. These functions are responsible for checking the + availability of cy_card and cy_port data structures and updating + the cy_next_channel. */ + + /* look for isa boards */ + cy_isa_nboard = cy_detect_isa(); + + /* look for pci boards */ + cy_pci_nboard = cy_detect_pci(); + + cy_nboard = cy_isa_nboard + cy_pci_nboard; + + /* invalidate remaining cy_card structures */ + for (i = 0 ; i < NR_CARDS ; i++) { + if (cy_card[i].base_addr == 0) { + cy_card[i].first_line = -1; + cy_card[i].ctl_addr = NULL; + cy_card[i].irq = 0; + cy_card[i].bus_index = 0; + cy_card[i].first_line = 0; + cy_card[i].num_chips = 0; + } + } + /* invalidate remaining cy_port structures */ + for (i = cy_next_channel ; i < NR_PORTS ; i++) { + cy_port[i].line = -1; + cy_port[i].magic = -1; + } + + /* initialize per-port data structures for each valid board found */ + for (board = 0 ; board < cy_nboard ; board++) { + cinfo = &cy_card[board]; + if (cinfo->num_chips == -1) { /* Cyclades-Z */ + number_z_boards++; + mailbox = cy_readl(&((struct RUNTIME_9060 __iomem *) + cy_card[board].ctl_addr)->mail_box_0); + nports = (mailbox == ZE_V1) ? ZE_V1_NPORTS : 8; + cinfo->intr_enabled = 0; + cinfo->nports = 0; /* Will be correctly set later, after + Z FW is loaded */ + spin_lock_init(&cinfo->card_lock); + for (port = cinfo->first_line ; + port < cinfo->first_line + nports; + port++) + { + info = &cy_port[port]; + info->magic = CYCLADES_MAGIC; + info->type = PORT_STARTECH; + info->card = board; + info->line = port; + info->chip_rev = 0; + info->flags = STD_COM_FLAGS; + info->tty = NULL; + if (mailbox == ZO_V1) + info->xmit_fifo_size = CYZ_FIFO_SIZE; + else + info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE; + info->cor1 = 0; + info->cor2 = 0; + info->cor3 = 0; + info->cor4 = 0; + info->cor5 = 0; + info->tbpr = 0; + info->tco = 0; + info->rbpr = 0; + info->rco = 0; + info->custom_divisor = 0; + info->close_delay = 5*HZ/10; + info->closing_wait = CLOSING_WAIT_DELAY; + info->icount.cts = info->icount.dsr = + info->icount.rng = info->icount.dcd = 0; + info->icount.rx = info->icount.tx = 0; + info->icount.frame = info->icount.parity = 0; + info->icount.overrun = info->icount.brk = 0; + info->x_char = 0; + info->event = 0; + info->count = 0; + info->blocked_open = 0; + info->default_threshold = 0; + info->default_timeout = 0; + INIT_WORK(&info->tqueue, do_softint, info); + init_waitqueue_head(&info->open_wait); + init_waitqueue_head(&info->close_wait); + init_waitqueue_head(&info->shutdown_wait); + init_waitqueue_head(&info->delta_msr_wait); + /* info->session */ + /* info->pgrp */ + info->read_status_mask = 0; + /* info->timeout */ + /* Bentson's vars */ + info->jiffies[0] = 0; + info->jiffies[1] = 0; + info->jiffies[2] = 0; + info->rflush_count = 0; +#ifdef CONFIG_CYZ_INTR + init_timer(&cyz_rx_full_timer[port]); + cyz_rx_full_timer[port].function = NULL; +#endif + } + continue; + }else{ /* Cyclom-Y of some kind*/ + index = cinfo->bus_index; + spin_lock_init(&cinfo->card_lock); + cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips; + for (port = cinfo->first_line ; + port < cinfo->first_line + cinfo->nports ; + port++) + { + info = &cy_port[port]; + info->magic = CYCLADES_MAGIC; + info->type = PORT_CIRRUS; + info->card = board; + info->line = port; + info->flags = STD_COM_FLAGS; + info->tty = NULL; + info->xmit_fifo_size = CyMAX_CHAR_FIFO; + info->cor1 = CyPARITY_NONE|Cy_1_STOP|Cy_8_BITS; + info->cor2 = CyETC; + info->cor3 = 0x08; /* _very_ small rcv threshold */ + info->cor4 = 0; + info->cor5 = 0; + info->custom_divisor = 0; + info->close_delay = 5*HZ/10; + info->closing_wait = CLOSING_WAIT_DELAY; + info->icount.cts = info->icount.dsr = + info->icount.rng = info->icount.dcd = 0; + info->icount.rx = info->icount.tx = 0; + info->icount.frame = info->icount.parity = 0; + info->icount.overrun = info->icount.brk = 0; + chip_number = (port - cinfo->first_line) / 4; + if ((info->chip_rev = + cy_readb(cinfo->base_addr + + (cy_chip_offset[chip_number]<<index) + + (CyGFRCR<<index))) >= CD1400_REV_J) { + /* It is a CD1400 rev. J or later */ + info->tbpr = baud_bpr_60[13]; /* Tx BPR */ + info->tco = baud_co_60[13]; /* Tx CO */ + info->rbpr = baud_bpr_60[13]; /* Rx BPR */ + info->rco = baud_co_60[13]; /* Rx CO */ + info->rflow = 0; + info->rtsdtr_inv = 1; + } else { + info->tbpr = baud_bpr_25[13]; /* Tx BPR */ + info->tco = baud_co_25[13]; /* Tx CO */ + info->rbpr = baud_bpr_25[13]; /* Rx BPR */ + info->rco = baud_co_25[13]; /* Rx CO */ + info->rflow = 0; + info->rtsdtr_inv = 0; + } + info->x_char = 0; + info->event = 0; + info->count = 0; + info->blocked_open = 0; + info->default_threshold = 0; + info->default_timeout = 0; + INIT_WORK(&info->tqueue, do_softint, info); + init_waitqueue_head(&info->open_wait); + init_waitqueue_head(&info->close_wait); + init_waitqueue_head(&info->shutdown_wait); + init_waitqueue_head(&info->delta_msr_wait); + /* info->session */ + /* info->pgrp */ + info->read_status_mask = + CyTIMEOUT| CySPECHAR| CyBREAK + | CyPARITY| CyFRAME| CyOVERRUN; + /* info->timeout */ + } + } + } + +#ifndef CONFIG_CYZ_INTR + if (number_z_boards && !cyz_timeron){ + cyz_timeron++; + cyz_timerlist.expires = jiffies + 1; + add_timer(&cyz_timerlist); +#ifdef CY_PCI_DEBUG + printk("Cyclades-Z polling initialized\n"); +#endif + } +#endif /* CONFIG_CYZ_INTR */ + + return 0; + +} /* cy_init */ + +static void __exit +cy_cleanup_module(void) +{ + int i, e1; + +#ifndef CONFIG_CYZ_INTR + if (cyz_timeron){ + cyz_timeron = 0; + del_timer(&cyz_timerlist); + } +#endif /* CONFIG_CYZ_INTR */ + + if ((e1 = tty_unregister_driver(cy_serial_driver))) + printk("cyc: failed to unregister Cyclades serial driver(%d)\n", + e1); + + put_tty_driver(cy_serial_driver); + + for (i = 0; i < NR_CARDS; i++) { + if (cy_card[i].base_addr) { + iounmap(cy_card[i].base_addr); + if (cy_card[i].ctl_addr) + iounmap(cy_card[i].ctl_addr); + if (cy_card[i].irq +#ifndef CONFIG_CYZ_INTR + && cy_card[i].num_chips != -1 /* not a Z card */ +#endif /* CONFIG_CYZ_INTR */ + ) + free_irq(cy_card[i].irq, &cy_card[i]); +#ifdef CONFIG_PCI + if (cy_card[i].pdev) + pci_release_regions(cy_card[i].pdev); +#endif + } + } + if (tmp_buf) { + free_page((unsigned long) tmp_buf); + tmp_buf = NULL; + } +} /* cy_cleanup_module */ + +module_init(cy_init); +module_exit(cy_cleanup_module); + +MODULE_LICENSE("GPL"); |