tty: cyclades, remove this orphan

The Cyclades driver was orphaned by commit d459883e6c54 (MAINTAINERS:
remove two dead e-mail) 13 years ago. Noone stepped up to take care of
them and to fix all the issues the driver has.

On the top of that, there is no way to obtain the firmware for Z cards
from the vendor as cyclades.com ceased to exist.

So it's time to drop the driver with all its traces.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210302062214.29627-5-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

18 files changed, 5 insertions, 5057 deletions

diff --git a/Documentation/admin-guide/devices.txt b/Documentation/admin-guide/devices.txt
index 63fd4e6a014b..b5bd9d46e031 100644
--- a/Documentation/admin-guide/devices.txt
+++ b/Documentation/admin-guide/devices.txt
@@ -477,11 +477,6 @@
   18 block	Sanyo CD-ROM
 		  0 = /dev/sjcd		Sanyo CD-ROM
 
-  19 char	Cyclades serial card
-		  0 = /dev/ttyC0	First Cyclades port
-		    ...
-		 31 = /dev/ttyC31	32nd Cyclades port
-
   19 block	"Double" compressed disk
 		  0 = /dev/double0	First compressed disk
 		    ...
@@ -493,11 +488,6 @@
 		See the Double documentation for the meaning of the
 		mirror devices.
 
-  20 char	Cyclades serial card - alternate devices
-		  0 = /dev/cub0		Callout device for ttyC0
-		    ...
-		 31 = /dev/cub31	Callout device for ttyC31
-
   20 block	Hitachi CD-ROM (under development)
 		  0 = /dev/hitcd	Hitachi CD-ROM
 
diff --git a/Documentation/driver-api/serial/cyclades_z.rst b/Documentation/driver-api/serial/cyclades_z.rst
deleted file mode 100644
index 532ff67e2f1c..000000000000
--- a/Documentation/driver-api/serial/cyclades_z.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-================
-Cyclades-Z notes
-================
-
-The Cyclades-Z must have firmware loaded onto the card before it will
-operate.  This operation should be performed during system startup,
-
-The firmware, loader program and the latest device driver code are
-available from Cyclades at
-
-    ftp://ftp.cyclades.com/pub/cyclades/cyclades-z/linux/
diff --git a/Documentation/driver-api/serial/index.rst b/Documentation/driver-api/serial/index.rst
index 33ad10d05b26..21351b8c95a4 100644
--- a/Documentation/driver-api/serial/index.rst
+++ b/Documentation/driver-api/serial/index.rst
@@ -17,7 +17,6 @@ Serial drivers
 .. toctree::
     :maxdepth: 1
 
-    cyclades_z
     moxa-smartio
     n_gsm
     rocket
diff --git a/Documentation/process/magic-number.rst b/Documentation/process/magic-number.rst
index fa5a62f4150c..d4a30c09bd03 100644
--- a/Documentation/process/magic-number.rst
+++ b/Documentation/process/magic-number.rst
@@ -73,7 +73,6 @@ CMAGIC                0x0111           user                     ``include/linux/
 MKISS_DRIVER_MAGIC    0x04bf           mkiss_channel            ``drivers/net/mkiss.h``
 HDLC_MAGIC            0x239e           n_hdlc                   ``drivers/char/n_hdlc.c``
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
-CYCLADES_MAGIC        0x4359           cyclades_port            ``include/linux/cyclades.h``
 DB_MAGIC              0x4442           fc_info                  ``drivers/net/iph5526_novram.c``
 DL_MAGIC              0x444d           fc_info                  ``drivers/net/iph5526_novram.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
diff --git a/Documentation/translations/it_IT/process/magic-number.rst b/Documentation/translations/it_IT/process/magic-number.rst
index 1af30f4228f2..0df2e7e32cd8 100644
--- a/Documentation/translations/it_IT/process/magic-number.rst
+++ b/Documentation/translations/it_IT/process/magic-number.rst
@@ -79,7 +79,6 @@ CMAGIC                0x0111           user                     ``include/linux/
 MKISS_DRIVER_MAGIC    0x04bf           mkiss_channel            ``drivers/net/mkiss.h``
 HDLC_MAGIC            0x239e           n_hdlc                   ``drivers/char/n_hdlc.c``
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
-CYCLADES_MAGIC        0x4359           cyclades_port            ``include/linux/cyclades.h``
 DB_MAGIC              0x4442           fc_info                  ``drivers/net/iph5526_novram.c``
 DL_MAGIC              0x444d           fc_info                  ``drivers/net/iph5526_novram.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
diff --git a/Documentation/translations/zh_CN/process/magic-number.rst b/Documentation/translations/zh_CN/process/magic-number.rst
index 7bb9d4165ed3..82d62f6a4406 100644
--- a/Documentation/translations/zh_CN/process/magic-number.rst
+++ b/Documentation/translations/zh_CN/process/magic-number.rst
@@ -62,7 +62,6 @@ CMAGIC                0x0111           user                     ``include/linux/
 MKISS_DRIVER_MAGIC    0x04bf           mkiss_channel            ``drivers/net/mkiss.h``
 HDLC_MAGIC            0x239e           n_hdlc                   ``drivers/char/n_hdlc.c``
 APM_BIOS_MAGIC        0x4101           apm_user                 ``arch/x86/kernel/apm_32.c``
-CYCLADES_MAGIC        0x4359           cyclades_port            ``include/linux/cyclades.h``
 DB_MAGIC              0x4442           fc_info                  ``drivers/net/iph5526_novram.c``
 DL_MAGIC              0x444d           fc_info                  ``drivers/net/iph5526_novram.c``
 FASYNC_MAGIC          0x4601           fasync_struct            ``include/linux/fs.h``
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst
index 599bd4493944..0a7b408c0ec7 100644
--- a/Documentation/userspace-api/ioctl/ioctl-number.rst
+++ b/Documentation/userspace-api/ioctl/ioctl-number.rst
@@ -209,7 +209,6 @@ Code  Seq#    Include File                                           Comments
              linux/fs.h,
 'X'   all    fs/ocfs2/ocfs_fs.h                                      conflict!
 'X'   01     linux/pktcdvd.h                                         conflict!
-'Y'   all    linux/cyclades.h
 'Z'   14-15  drivers/message/fusion/mptctl.h
 '['   00-3F  linux/usb/tmc.h                                         USB Test and Measurement Devices
                                                                      <mailto:gregkh@linuxfoundation.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 363530db37ac..29f20a97d73d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4876,13 +4876,6 @@ S:	Maintained
 W:	http://www.armlinux.org.uk/
 F:	drivers/video/fbdev/cyber2000fb.*
 
-CYCLADES ASYNC MUX DRIVER
-S:	Orphan
-W:	http://www.cyclades.com/
-F:	drivers/tty/cyclades.c
-F:	include/linux/cyclades.h
-F:	include/uapi/linux/cyclades.h
-
 CYCLADES PC300 DRIVER
 S:	Orphan
 F:	drivers/net/wan/pc300*
diff --git a/arch/powerpc/configs/ppc6xx_defconfig b/arch/powerpc/configs/ppc6xx_defconfig
index 6677ac0da45a..1fd9d1260f9e 100644
--- a/arch/powerpc/configs/ppc6xx_defconfig
+++ b/arch/powerpc/configs/ppc6xx_defconfig
@@ -595,7 +595,6 @@ CONFIG_GAMEPORT_FM801=m
 # CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_NONSTANDARD=y
 CONFIG_ROCKETPORT=m
-CONFIG_CYCLADES=m
 CONFIG_SYNCLINK_GT=m
 CONFIG_NOZOMI=m
 CONFIG_N_HDLC=m
diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index e15cd6b5bb99..397523a8095e 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -181,7 +181,7 @@ config SERIAL_NONSTANDARD
 	help
 	  Say Y here if you have any non-standard serial boards -- boards
 	  which aren't supported using the standard "dumb" serial driver.
-	  This includes intelligent serial boards such as Cyclades,
+	  This includes intelligent serial boards such as
 	  Digiboards, etc. These are usually used for systems that need many
 	  serial ports because they serve many terminals or dial-in
 	  connections.
@@ -207,35 +207,6 @@ config ROCKETPORT
 	  If you want to compile this driver into the kernel, say Y here.  If
 	  you don't have a Comtrol RocketPort/RocketModem card installed, say N.
 
-config CYCLADES
-	tristate "Cyclades async mux support"
-	depends on SERIAL_NONSTANDARD && (PCI || ISA)
-	select FW_LOADER
-	help
-	  This driver supports Cyclades Z and Y multiserial boards.
-	  You would need something like this to connect more than two modems to
-	  your Linux box, for instance in order to become a dial-in server.
-
-	  For information about the Cyclades-Z card, read
-	  <file:Documentation/driver-api/serial/cyclades_z.rst>.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called cyclades.
-
-	  If you haven't heard about it, it's safe to say N.
-
-config CYZ_INTR
-	bool "Cyclades-Z interrupt mode operation"
-	depends on CYCLADES && PCI
-	help
-	  The Cyclades-Z family of multiport cards allows 2 (two) driver op
-	  modes: polling and interrupt. In polling mode, the driver will check
-	  the status of the Cyclades-Z ports every certain amount of time
-	  (which is called polling cycle and is configurable). In interrupt
-	  mode, it will use an interrupt line (IRQ) in order to check the
-	  status of the Cyclades-Z ports. The default op mode is polling. If
-	  unsure, say N.
-
 config MOXA_INTELLIO
 	tristate "Moxa Intellio support"
 	depends on SERIAL_NONSTANDARD && (ISA || EISA || PCI)
diff --git a/drivers/tty/Makefile b/drivers/tty/Makefile
index 730de6bf048b..94eb2bf75763 100644
--- a/drivers/tty/Makefile
+++ b/drivers/tty/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_SERIAL_DEV_BUS)	+= serdev/
 
 # tty drivers
 obj-$(CONFIG_AMIGA_BUILTIN_SERIAL) += amiserial.o
-obj-$(CONFIG_CYCLADES)		+= cyclades.o
 obj-$(CONFIG_ISI)		+= isicom.o
 obj-$(CONFIG_MOXA_INTELLIO)	+= moxa.o
 obj-$(CONFIG_MOXA_SMARTIO)	+= mxser.o
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
deleted file mode 100644
index 097266342e5e..000000000000
--- a/drivers/tty/cyclades.c
+++ /dev/null
@@ -1,4119 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#undef	BLOCKMOVE
-#define	Z_WAKE
-#undef	Z_EXT_CHARS_IN_BUFFER
-
-/*
- * 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>.
- *
- * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.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.
- * Converted to pci probing and cleaned up by Jiri Slaby.
- *
- */
-
-#define CY_VERSION	"2.6"
-
-/* 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 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_INTERRUPTS
-#undef	CY_16Y_HACK
-#undef	CY_ENABLE_MONITORING
-#undef	CY_PCI_DEBUG
-
-/*
- * 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 <linux/firmware.h>
-#include <linux/device.h>
-#include <linux/slab.h>
-
-#include <linux/io.h>
-#include <linux/uaccess.h>
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-
-#include <linux/stat.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-
-static void cy_send_xchar(struct tty_struct *tty, char ch);
-
-#ifndef SERIAL_XMIT_SIZE
-#define	SERIAL_XMIT_SIZE	(min(PAGE_SIZE, 4096))
-#endif
-
-/* firmware stuff */
-#define ZL_MAX_BLOCKS	16
-#define DRIVER_VERSION	0x02010203
-#define RAM_SIZE 0x80000
-
-enum zblock_type {
-	ZBLOCK_PRG = 0,
-	ZBLOCK_FPGA = 1
-};
-
-struct zfile_header {
-	char name[64];
-	char date[32];
-	char aux[32];
-	u32 n_config;
-	u32 config_offset;
-	u32 n_blocks;
-	u32 block_offset;
-	u32 reserved[9];
-} __attribute__ ((packed));
-
-struct zfile_config {
-	char name[64];
-	u32 mailbox;
-	u32 function;
-	u32 n_blocks;
-	u32 block_list[ZL_MAX_BLOCKS];
-} __attribute__ ((packed));
-
-struct zfile_block {
-	u32 type;
-	u32 file_offset;
-	u32 ram_offset;
-	u32 size;
-} __attribute__ ((packed));
-
-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.
-*/
-
-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)
-
-static long maddr[NR_CARDS];
-static int irq[NR_CARDS];
-
-module_param_hw_array(maddr, long, iomem, NULL, 0);
-module_param_hw_array(irq, int, irq, NULL, 0);
-
-#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];
-
-static int cy_next_channel;	/* next minor available */
-
-/*
- * 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->port.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 const 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 const 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 const 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 const 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 const 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 const 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 const 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 const unsigned int cy_chip_offset[] = { 0x0000,
-	0x0400,
-	0x0800,
-	0x0C00,
-	0x0200,
-	0x0600,
-	0x0A00,
-	0x0E00
-};
-
-/* PCI related definitions */
-
-#ifdef CONFIG_PCI
-static const struct pci_device_id cy_pci_dev_id[] = {
-	/* PCI < 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
-	/* PCI > 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) },
-	/* 4Y PCI < 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) },
-	/* 4Y PCI > 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) },
-	/* 8Y PCI < 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) },
-	/* 8Y PCI > 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) },
-	/* Z PCI < 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) },
-	/* Z PCI > 1Mb */
-	{ PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) },
-	{ }			/* end of table */
-};
-MODULE_DEVICE_TABLE(pci, cy_pci_dev_id);
-#endif
-
-static void cy_start(struct tty_struct *);
-static void cy_set_line_char(struct cyclades_port *, struct tty_struct *);
-static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32);
-#ifdef CONFIG_ISA
-static unsigned detect_isa_irq(void __iomem *);
-#endif				/* CONFIG_ISA */
-
-#ifndef CONFIG_CYZ_INTR
-static void cyz_poll(struct timer_list *);
-
-/* The Cyclades-Z polling cycle is defined by this variable */
-static long cyz_polling_cycle = CZ_DEF_POLL;
-
-static DEFINE_TIMER(cyz_timerlist, cyz_poll);
-
-#else				/* CONFIG_CYZ_INTR */
-static void cyz_rx_restart(struct timer_list *);
-#endif				/* CONFIG_CYZ_INTR */
-
-static void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
-{
-	struct cyclades_card *card = port->card;
-
-	cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
-}
-
-static u8 cyy_readb(struct cyclades_port *port, u32 reg)
-{
-	struct cyclades_card *card = port->card;
-
-	return readb(port->u.cyy.base_addr + (reg << card->bus_index));
-}
-
-static inline bool cy_is_Z(struct cyclades_card *card)
-{
-	return card->num_chips == (unsigned int)-1;
-}
-
-static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr)
-{
-	return readl(&ctl_addr->init_ctrl) & (1 << 17);
-}
-
-static inline bool cyz_fpga_loaded(struct cyclades_card *card)
-{
-	return __cyz_fpga_loaded(card->ctl_addr.p9060);
-}
-
-static bool cyz_is_loaded(struct cyclades_card *card)
-{
-	struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS;
-
-	return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) &&
-			readl(&fw_id->signature) == ZFIRM_ID;
-}
-
-static int serial_paranoia_check(struct cyclades_port *info,
-		const char *name, const char *routine)
-{
-#ifdef SERIAL_PARANOIA_CHECK
-	if (!info) {
-		printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) "
-				"in %s\n", name, routine);
-		return 1;
-	}
-
-	if (info->magic != CYCLADES_MAGIC) {
-		printk(KERN_WARNING "cyc Warning: bad magic number for serial "
-				"struct (%s) in %s\n", name, routine);
-		return 1;
-	}
-#endif
-	return 0;
-}
-
-/***********************************************************/
-/********* 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, u8 cmd, int index)
-{
-	void __iomem *ccr = base_addr + (CyCCR << index);
-	unsigned int i;
-
-	/* Check to see that the previous command has completed */
-	for (i = 0; i < 100; i++) {
-		if (readb(ccr) == 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(ccr, cmd);
-
-	return 0;
-}
-
-static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd)
-{
-	return __cyy_issue_cmd(port->u.cyy.base_addr, cmd,
-			port->card->bus_index);
-}
-
-#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 ... */
-	msleep(5);
-
-	/* 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),
-		  readb(address + (CySRER << index)) | CyTxRdy);
-	local_irq_restore(flags);
-
-	/* Wait ... */
-	msleep(5);
-
-	/* Check which interrupt is in use */
-	irq = probe_irq_off(irqs);
-
-	/* Clean up */
-	save_xir = (u_char) readb(address + (CyTIR << index));
-	save_car = readb(address + (CyCAR << index));
-	cy_writeb(address + (CyCAR << index), (save_xir & 0x3));
-	cy_writeb(address + (CySRER << index),
-		  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 */
-
-static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
-		void __iomem *base_addr)
-{
-	struct cyclades_port *info;
-	struct tty_port *port;
-	int len, index = cinfo->bus_index;
-	u8 ivr, save_xir, channel, save_car, data, char_count;
-
-#ifdef CY_DEBUG_INTERRUPTS
-	printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
-#endif
-	/* determine the channel & change to that context */
-	save_xir = readb(base_addr + (CyRIR << index));
-	channel = save_xir & CyIRChannel;
-	info = &cinfo->ports[channel + chip * 4];
-	port = &info->port;
-	save_car = cyy_readb(info, CyCAR);
-	cyy_writeb(info, CyCAR, save_xir);
-	ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
-
-	/* there is an open port for this data */
-	if (ivr == CyIVRRxEx) {	/* exception */
-		data = cyy_readb(info, CyRDSR);
-
-		/* 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++;
-			return;
-		}
-		if (tty_buffer_request_room(port, 1)) {
-			if (data & info->read_status_mask) {
-				if (data & CyBREAK) {
-					tty_insert_flip_char(port,
-						cyy_readb(info, CyRDSR),
-						TTY_BREAK);
-					info->icount.rx++;
-					if (port->flags & ASYNC_SAK) {
-						struct tty_struct *tty =
-							tty_port_tty_get(port);
-						if (tty) {
-							do_SAK(tty);
-							tty_kref_put(tty);
-						}
-					}
-				} else if (data & CyFRAME) {
-					tty_insert_flip_char(port,
-						cyy_readb(info, CyRDSR),
-						TTY_FRAME);
-					info->icount.rx++;
-					info->idle_stats.frame_errs++;
-				} else if (data & CyPARITY) {
-					/* Pieces of seven... */
-					tty_insert_flip_char(port,
-						cyy_readb(info, CyRDSR),
-						TTY_PARITY);
-					info->icount.rx++;
-					info->idle_stats.parity_errs++;
-				} else if (data & CyOVERRUN) {
-					tty_insert_flip_char(port, 0,
-							TTY_OVERRUN);
-					info->icount.rx++;
-					/* If the flip buffer itself is
-					   overflowing, we still lose
-					   the next incoming character.
-					 */
-					tty_insert_flip_char(port,
-						cyy_readb(info, CyRDSR),
-						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(port, 0,
-							TTY_NORMAL);
-					info->icount.rx++;
-				}
-			} else {
-				tty_insert_flip_char(port, 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 = cyy_readb(info, CyRDCR);
-
-#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(port, char_count);
-		while (len--) {
-			data = cyy_readb(info, CyRDSR);
-			tty_insert_flip_char(port, 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(port);
-
-	/* end of service */
-	cyy_writeb(info, CyRIR, save_xir & 0x3f);
-	cyy_writeb(info, CyCAR, save_car);
-}
-
-static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
-		void __iomem *base_addr)
-{
-	struct cyclades_port *info;
-	struct tty_struct *tty;
-	int char_count, index = cinfo->bus_index;
-	u8 save_xir, channel, save_car, outch;
-
-	/* 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(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip);
-#endif
-
-	/* determine the channel & change to that context */
-	save_xir = readb(base_addr + (CyTIR << index));
-	channel = save_xir & CyIRChannel;
-	save_car = readb(base_addr + (CyCAR << index));
-	cy_writeb(base_addr + (CyCAR << index), save_xir);
-
-	info = &cinfo->ports[channel + chip * 4];
-	tty = tty_port_tty_get(&info->port);
-	if (tty == NULL) {
-		cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
-		goto end;
-	}
-
-	/* 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;
-		cyy_writeb(info, CyTDR, outch);
-		char_count--;
-		info->icount.tx++;
-		info->x_char = 0;
-	}
-
-	if (info->breakon || info->breakoff) {
-		if (info->breakon) {
-			cyy_writeb(info, CyTDR, 0);
-			cyy_writeb(info, CyTDR, 0x81);
-			info->breakon = 0;
-			char_count -= 2;
-		}
-		if (info->breakoff) {
-			cyy_writeb(info, CyTDR, 0);
-			cyy_writeb(info, CyTDR, 0x83);
-			info->breakoff = 0;
-			char_count -= 2;
-		}
-	}
-
-	while (char_count-- > 0) {
-		if (!info->xmit_cnt) {
-			if (cyy_readb(info, CySRER) & CyTxMpty) {
-				cyy_writeb(info, CySRER,
-					cyy_readb(info, CySRER) & ~CyTxMpty);
-			} else {
-				cyy_writeb(info, CySRER, CyTxMpty |
-					(cyy_readb(info, CySRER) & ~CyTxRdy));
-			}
-			goto done;
-		}
-		if (info->port.xmit_buf == NULL) {
-			cyy_writeb(info, CySRER,
-				cyy_readb(info, CySRER) & ~CyTxRdy);
-			goto done;
-		}
-		if (tty->stopped || tty->hw_stopped) {
-			cyy_writeb(info, CySRER,
-				cyy_readb(info, CySRER) & ~CyTxRdy);
-			goto done;
-		}
-		/* 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->port.xmit_buf[info->xmit_tail];
-		if (outch) {
-			info->xmit_cnt--;
-			info->xmit_tail = (info->xmit_tail + 1) &
-					(SERIAL_XMIT_SIZE - 1);
-			cyy_writeb(info, CyTDR, outch);
-			info->icount.tx++;
-		} else {
-			if (char_count > 1) {
-				info->xmit_cnt--;
-				info->xmit_tail = (info->xmit_tail + 1) &
-					(SERIAL_XMIT_SIZE - 1);
-				cyy_writeb(info, CyTDR, outch);
-				cyy_writeb(info, CyTDR, 0);
-				info->icount.tx++;
-				char_count--;
-			}
-		}
-	}
-
-done:
-	tty_wakeup(tty);
-	tty_kref_put(tty);
-end:
-	/* end of service */
-	cyy_writeb(info, CyTIR, save_xir & 0x3f);
-	cyy_writeb(info, CyCAR, save_car);