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Diffstat (limited to 'drivers/char/cyclades.c')
| -rw-r--r-- | drivers/char/cyclades.c | 5540 |
1 files changed, 0 insertions, 5540 deletions
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c deleted file mode 100644 index 6a5337bf093..00000000000 --- a/drivers/char/cyclades.c +++ /dev/null @@ -1,5540 +0,0 @@ -#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"); |