| #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 explicitly |
| * 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/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/tty_flip.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 ARRAY_SIZE(cy_isa_addresses) |
| |
| #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 DEFINE_TIMER(cyz_timerlist, 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; |
| int len; |
| 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_buffer_request_room(tty, 1)) { |
| if (data & info->read_status_mask){ |
| if(data & CyBREAK){ |
| tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_BREAK); |
| info->icount.rx++; |
| if (info->flags & ASYNC_SAK){ |
| do_SAK(tty); |
| } |
| }else if(data & CyFRAME){ |
| tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME); |
| info->icount.rx++; |
| info->idle_stats.frame_errs++; |
| }else if(data & CyPARITY){ |
| /* Pieces of seven... */ |
| tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_PARITY); |
| info->icount.rx++; |
| info->idle_stats.parity_errs++; |
| }else if(data & CyOVERRUN){ |
| tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
| info->icount.rx++; |
| /* If the flip buffer itself is |
| overflowing, we still lose |
| the next incoming character. |
| */ |
| tty_insert_flip_char(tty, cy_readb(base_addr+(CyRDSR<<index)), TTY_FRAME); |
| 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_insert_flip_char(tty, 0, TTY_NORMAL); |
| info->icount.rx++; |
| } |
| }else{ |
| tty_insert_flip_char(tty, 0, TTY_NORMAL); |
| 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 |
| len = tty_buffer_request_room(tty, char_count); |
| while(len--){ |
| data = cy_readb(base_addr+(CyRDSR<<index)); |
| tty_insert_flip_char(tty, data, TTY_NORMAL); |
| info->idle_stats.recv_bytes++; |
| info->icount.rx++; |
| #ifdef CY_16Y_HACK |
| udelay(10L); |
| #endif |
| } |
| info->idle_stats.recv_idle = jiffies; |
| } |
| tty_schedule_flip(tty); |
| } |
| /* 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; |
| int len; |
| #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 |
| len = tty_buffer_request_room(tty, char_count); |
| while(len--){ |
| data = cy_readb(cinfo->base_addr + rx_bufaddr + new_rx_get); |
| new_rx_get = (new_rx_get + 1) & (rx_bufsize - 1); |
| tty_insert_flip_char(tty, data, TTY_NORMAL); |
| 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; |
| tty_schedule_flip(tty); |
| } |
| /* 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_insert_flip_char(tty, 0, TTY_PARITY); |
| info->icount.rx++; |
| special_count++; |
| break; |
| case C_CM_FR_ERROR: |
| tty_insert_flip_char(tty, 0, TTY_FRAME); |
| info->icount.rx++; |
| special_count++; |
| break; |
| case C_CM_RXBRK: |
| tty_insert_flip_char(tty, 0, TTY_BREAK); |
| 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) |
| tty_schedule_flip(tty); |
| } |
| } |
| |
| #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 (!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 (!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, |
| IRQF_DISABLED, "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, |
| IRQF_SHARED, "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, |
| IRQF_SHARED, "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, |
| IRQF_SHARED, "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->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"); |
