[PATCH 4/5] staging: dgnc: Remove driver in favor of serial/jsm driver
From: Konrad Zapalowicz
Date: Sun Nov 02 2014 - 19:07:23 EST
This commit removes the staging/dgnc driver in favor of the serial/jsm
driver.
This is because the serial/jsm driver now supports all of the hardware
that has been supported by the staging/dgnc plus it offers better
overall quality.
Given above the staging/dgnc is obsolete now.
Signed-off-by: Konrad Zapalowicz <bergo.torino@xxxxxxxxx>
---
MAINTAINERS | 7 -
drivers/staging/Kconfig | 2 -
drivers/staging/Makefile | 1 -
drivers/staging/dgnc/Kconfig | 6 -
drivers/staging/dgnc/Makefile | 8 -
drivers/staging/dgnc/TODO | 10 -
drivers/staging/dgnc/dgnc_cls.c | 1389 ---------------
drivers/staging/dgnc/dgnc_cls.h | 89 -
drivers/staging/dgnc/dgnc_driver.c | 757 ---------
drivers/staging/dgnc/dgnc_driver.h | 465 -----
drivers/staging/dgnc/dgnc_kcompat.h | 64 -
drivers/staging/dgnc/dgnc_mgmt.c | 281 ---
drivers/staging/dgnc/dgnc_mgmt.h | 31 -
drivers/staging/dgnc/dgnc_neo.c | 1878 --------------------
drivers/staging/dgnc/dgnc_neo.h | 157 --
drivers/staging/dgnc/dgnc_pci.h | 75 -
drivers/staging/dgnc/dgnc_sysfs.c | 750 --------
drivers/staging/dgnc/dgnc_sysfs.h | 49 -
drivers/staging/dgnc/dgnc_tty.c | 3201 -----------------------------------
drivers/staging/dgnc/dgnc_tty.h | 42 -
drivers/staging/dgnc/dgnc_types.h | 33 -
drivers/staging/dgnc/dgnc_utils.c | 70 -
drivers/staging/dgnc/dgnc_utils.h | 7 -
drivers/staging/dgnc/digi.h | 415 -----
drivers/staging/dgnc/dpacompat.h | 115 --
25 files changed, 9902 deletions(-)
delete mode 100644 drivers/staging/dgnc/Kconfig
delete mode 100644 drivers/staging/dgnc/Makefile
delete mode 100644 drivers/staging/dgnc/TODO
delete mode 100644 drivers/staging/dgnc/dgnc_cls.c
delete mode 100644 drivers/staging/dgnc/dgnc_cls.h
delete mode 100644 drivers/staging/dgnc/dgnc_driver.c
delete mode 100644 drivers/staging/dgnc/dgnc_driver.h
delete mode 100644 drivers/staging/dgnc/dgnc_kcompat.h
delete mode 100644 drivers/staging/dgnc/dgnc_mgmt.c
delete mode 100644 drivers/staging/dgnc/dgnc_mgmt.h
delete mode 100644 drivers/staging/dgnc/dgnc_neo.c
delete mode 100644 drivers/staging/dgnc/dgnc_neo.h
delete mode 100644 drivers/staging/dgnc/dgnc_pci.h
delete mode 100644 drivers/staging/dgnc/dgnc_sysfs.c
delete mode 100644 drivers/staging/dgnc/dgnc_sysfs.h
delete mode 100644 drivers/staging/dgnc/dgnc_tty.c
delete mode 100644 drivers/staging/dgnc/dgnc_tty.h
delete mode 100644 drivers/staging/dgnc/dgnc_types.h
delete mode 100644 drivers/staging/dgnc/dgnc_utils.c
delete mode 100644 drivers/staging/dgnc/dgnc_utils.h
delete mode 100644 drivers/staging/dgnc/digi.h
delete mode 100644 drivers/staging/dgnc/dpacompat.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 3c64271..021efc5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2992,13 +2992,6 @@ F: include/linux/mfd/da9063/
F: include/sound/da[79]*.h
F: sound/soc/codecs/da[79]*.[ch]
-DIGI NEO AND CLASSIC PCI PRODUCTS
-M: Lidza Louina <lidza.louina@xxxxxxxxx>
-M: Mark Hounschell <markh@xxxxxxxxxx>
-L: driverdev-devel@xxxxxxxxxxxxxxxxxxxxxx
-S: Maintained
-F: drivers/staging/dgnc/
-
DIGI EPCA PCI PRODUCTS
M: Lidza Louina <lidza.louina@xxxxxxxxx>
M: Mark Hounschell <markh@xxxxxxxxxx>
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 4690ae9..fbe9452 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -98,8 +98,6 @@ source "drivers/staging/mt29f_spinand/Kconfig"
source "drivers/staging/lustre/Kconfig"
-source "drivers/staging/dgnc/Kconfig"
-
source "drivers/staging/dgap/Kconfig"
source "drivers/staging/gs_fpgaboot/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index c780a0e..c80bf16 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -40,7 +40,6 @@ obj-$(CONFIG_DRM_IMX) += imx-drm/
obj-$(CONFIG_FIREWIRE_SERIAL) += fwserial/
obj-$(CONFIG_GOLDFISH) += goldfish/
obj-$(CONFIG_LUSTRE_FS) += lustre/
-obj-$(CONFIG_DGNC) += dgnc/
obj-$(CONFIG_DGAP) += dgap/
obj-$(CONFIG_MTD_SPINAND_MT29F) += mt29f_spinand/
obj-$(CONFIG_GS_FPGABOOT) += gs_fpgaboot/
diff --git a/drivers/staging/dgnc/Kconfig b/drivers/staging/dgnc/Kconfig
deleted file mode 100644
index 032c2a7..0000000
--- a/drivers/staging/dgnc/Kconfig
+++ /dev/null
@@ -1,6 +0,0 @@
-config DGNC
- tristate "Digi Neo and Classic PCI Products"
- default n
- depends on TTY && PCI
- ---help---
- Driver for the Digi International Neo and Classic PCI based product line.
diff --git a/drivers/staging/dgnc/Makefile b/drivers/staging/dgnc/Makefile
deleted file mode 100644
index b69f7b6..0000000
--- a/drivers/staging/dgnc/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-EXTRA_CFLAGS += -DDG_NAME=\"dgnc-1.3-16\" -DDG_PART=\"40002369_F\"
-
-obj-$(CONFIG_DGNC) += dgnc.o
-
-dgnc-objs := dgnc_cls.o dgnc_driver.o\
- dgnc_mgmt.o dgnc_neo.o\
- dgnc_tty.o dgnc_sysfs.o\
- dgnc_utils.o
diff --git a/drivers/staging/dgnc/TODO b/drivers/staging/dgnc/TODO
deleted file mode 100644
index 22adff1..0000000
--- a/drivers/staging/dgnc/TODO
+++ /dev/null
@@ -1,10 +0,0 @@
-* checkpatch fixes
-* remove unecessary comments
-* remove unecessary error messages. Example kzalloc() has its
- own error message. Adding an extra one is useless.
-* use goto statements for error handling when appropriate
-* there is a lot of unecessary code in the driver. It was
- originally a standalone driver. Remove uneeded code.
-
-Please send patches to Greg Kroah-Hartman <greg@xxxxxxxxx> and
-Cc: Lidza Louina <lidza.louina@xxxxxxxxx>
diff --git a/drivers/staging/dgnc/dgnc_cls.c b/drivers/staging/dgnc/dgnc_cls.c
deleted file mode 100644
index a17f4f6..0000000
--- a/drivers/staging/dgnc/dgnc_cls.c
+++ /dev/null
@@ -1,1389 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h> /* For jiffies, task states */
-#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
-#include <linux/delay.h> /* For udelay */
-#include <linux/io.h> /* For read[bwl]/write[bwl] */
-#include <linux/serial.h> /* For struct async_serial */
-#include <linux/serial_reg.h> /* For the various UART offsets */
-#include <linux/pci.h>
-
-#include "dgnc_driver.h" /* Driver main header file */
-#include "dgnc_cls.h"
-#include "dgnc_tty.h"
-
-static inline void cls_parse_isr(struct dgnc_board *brd, uint port);
-static inline void cls_clear_break(struct channel_t *ch, int force);
-static inline void cls_set_cts_flow_control(struct channel_t *ch);
-static inline void cls_set_rts_flow_control(struct channel_t *ch);
-static inline void cls_set_ixon_flow_control(struct channel_t *ch);
-static inline void cls_set_ixoff_flow_control(struct channel_t *ch);
-static inline void cls_set_no_output_flow_control(struct channel_t *ch);
-static inline void cls_set_no_input_flow_control(struct channel_t *ch);
-static void cls_parse_modem(struct channel_t *ch, unsigned char signals);
-static void cls_tasklet(unsigned long data);
-static void cls_vpd(struct dgnc_board *brd);
-static void cls_uart_init(struct channel_t *ch);
-static void cls_uart_off(struct channel_t *ch);
-static int cls_drain(struct tty_struct *tty, uint seconds);
-static void cls_param(struct tty_struct *tty);
-static void cls_assert_modem_signals(struct channel_t *ch);
-static void cls_flush_uart_write(struct channel_t *ch);
-static void cls_flush_uart_read(struct channel_t *ch);
-static void cls_disable_receiver(struct channel_t *ch);
-static void cls_enable_receiver(struct channel_t *ch);
-static void cls_send_break(struct channel_t *ch, int msecs);
-static void cls_send_start_character(struct channel_t *ch);
-static void cls_send_stop_character(struct channel_t *ch);
-static void cls_copy_data_from_uart_to_queue(struct channel_t *ch);
-static void cls_copy_data_from_queue_to_uart(struct channel_t *ch);
-static uint cls_get_uart_bytes_left(struct channel_t *ch);
-static void cls_send_immediate_char(struct channel_t *ch, unsigned char);
-static irqreturn_t cls_intr(int irq, void *voidbrd);
-
-struct board_ops dgnc_cls_ops = {
- .tasklet = cls_tasklet,
- .intr = cls_intr,
- .uart_init = cls_uart_init,
- .uart_off = cls_uart_off,
- .drain = cls_drain,
- .param = cls_param,
- .vpd = cls_vpd,
- .assert_modem_signals = cls_assert_modem_signals,
- .flush_uart_write = cls_flush_uart_write,
- .flush_uart_read = cls_flush_uart_read,
- .disable_receiver = cls_disable_receiver,
- .enable_receiver = cls_enable_receiver,
- .send_break = cls_send_break,
- .send_start_character = cls_send_start_character,
- .send_stop_character = cls_send_stop_character,
- .copy_data_from_queue_to_uart = cls_copy_data_from_queue_to_uart,
- .get_uart_bytes_left = cls_get_uart_bytes_left,
- .send_immediate_char = cls_send_immediate_char
-};
-
-
-static inline void cls_set_cts_flow_control(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char ier = readb(&ch->ch_cls_uart->ier);
- unsigned char isr_fcr = 0;
-
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn on CTS flow control, turn off IXON flow control */
- isr_fcr |= (UART_EXAR654_EFR_ECB | UART_EXAR654_EFR_CTSDSR);
- isr_fcr &= ~(UART_EXAR654_EFR_IXON);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /*
- * Enable interrupts for CTS flow, turn off interrupts for
- * received XOFF chars
- */
- ier |= (UART_EXAR654_IER_CTSDSR);
- ier &= ~(UART_EXAR654_IER_XOFF);
- writeb(ier, &ch->ch_cls_uart->ier);
-
- /* Set the usual FIFO values */
- writeb((UART_FCR_ENABLE_FIFO), &ch->ch_cls_uart->isr_fcr);
-
- writeb((UART_FCR_ENABLE_FIFO | UART_16654_FCR_RXTRIGGER_56 |
- UART_16654_FCR_TXTRIGGER_16 | UART_FCR_CLEAR_RCVR),
- &ch->ch_cls_uart->isr_fcr);
-
- ch->ch_t_tlevel = 16;
-
-}
-
-
-static inline void cls_set_ixon_flow_control(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char ier = readb(&ch->ch_cls_uart->ier);
- unsigned char isr_fcr = 0;
-
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn on IXON flow control, turn off CTS flow control */
- isr_fcr |= (UART_EXAR654_EFR_ECB | UART_EXAR654_EFR_IXON);
- isr_fcr &= ~(UART_EXAR654_EFR_CTSDSR);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Now set our current start/stop chars while in enhanced mode */
- writeb(ch->ch_startc, &ch->ch_cls_uart->mcr);
- writeb(0, &ch->ch_cls_uart->lsr);
- writeb(ch->ch_stopc, &ch->ch_cls_uart->msr);
- writeb(0, &ch->ch_cls_uart->spr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /*
- * Disable interrupts for CTS flow, turn on interrupts for
- * received XOFF chars
- */
- ier &= ~(UART_EXAR654_IER_CTSDSR);
- ier |= (UART_EXAR654_IER_XOFF);
- writeb(ier, &ch->ch_cls_uart->ier);
-
- /* Set the usual FIFO values */
- writeb((UART_FCR_ENABLE_FIFO), &ch->ch_cls_uart->isr_fcr);
-
- writeb((UART_FCR_ENABLE_FIFO | UART_16654_FCR_RXTRIGGER_16 |
- UART_16654_FCR_TXTRIGGER_16 | UART_FCR_CLEAR_RCVR),
- &ch->ch_cls_uart->isr_fcr);
-
-}
-
-
-static inline void cls_set_no_output_flow_control(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char ier = readb(&ch->ch_cls_uart->ier);
- unsigned char isr_fcr = 0;
-
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn off IXON flow control, turn off CTS flow control */
- isr_fcr |= (UART_EXAR654_EFR_ECB);
- isr_fcr &= ~(UART_EXAR654_EFR_CTSDSR | UART_EXAR654_EFR_IXON);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /*
- * Disable interrupts for CTS flow, turn off interrupts for
- * received XOFF chars
- */
- ier &= ~(UART_EXAR654_IER_CTSDSR);
- ier &= ~(UART_EXAR654_IER_XOFF);
- writeb(ier, &ch->ch_cls_uart->ier);
-
- /* Set the usual FIFO values */
- writeb((UART_FCR_ENABLE_FIFO), &ch->ch_cls_uart->isr_fcr);
-
- writeb((UART_FCR_ENABLE_FIFO | UART_16654_FCR_RXTRIGGER_16 |
- UART_16654_FCR_TXTRIGGER_16 | UART_FCR_CLEAR_RCVR),
- &ch->ch_cls_uart->isr_fcr);
-
- ch->ch_r_watermark = 0;
- ch->ch_t_tlevel = 16;
- ch->ch_r_tlevel = 16;
-
-}
-
-
-static inline void cls_set_rts_flow_control(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char ier = readb(&ch->ch_cls_uart->ier);
- unsigned char isr_fcr = 0;
-
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn on RTS flow control, turn off IXOFF flow control */
- isr_fcr |= (UART_EXAR654_EFR_ECB | UART_EXAR654_EFR_RTSDTR);
- isr_fcr &= ~(UART_EXAR654_EFR_IXOFF);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /* Enable interrupts for RTS flow */
- ier |= (UART_EXAR654_IER_RTSDTR);
- writeb(ier, &ch->ch_cls_uart->ier);
-
- /* Set the usual FIFO values */
- writeb((UART_FCR_ENABLE_FIFO), &ch->ch_cls_uart->isr_fcr);
-
- writeb((UART_FCR_ENABLE_FIFO | UART_16654_FCR_RXTRIGGER_56 |
- UART_16654_FCR_TXTRIGGER_16 | UART_FCR_CLEAR_RCVR),
- &ch->ch_cls_uart->isr_fcr);
-
-
- ch->ch_r_watermark = 4;
- ch->ch_r_tlevel = 8;
-
-}
-
-
-static inline void cls_set_ixoff_flow_control(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char ier = readb(&ch->ch_cls_uart->ier);
- unsigned char isr_fcr = 0;
-
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn on IXOFF flow control, turn off RTS flow control */
- isr_fcr |= (UART_EXAR654_EFR_ECB | UART_EXAR654_EFR_IXOFF);
- isr_fcr &= ~(UART_EXAR654_EFR_RTSDTR);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Now set our current start/stop chars while in enhanced mode */
- writeb(ch->ch_startc, &ch->ch_cls_uart->mcr);
- writeb(0, &ch->ch_cls_uart->lsr);
- writeb(ch->ch_stopc, &ch->ch_cls_uart->msr);
- writeb(0, &ch->ch_cls_uart->spr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /* Disable interrupts for RTS flow */
- ier &= ~(UART_EXAR654_IER_RTSDTR);
- writeb(ier, &ch->ch_cls_uart->ier);
-
- /* Set the usual FIFO values */
- writeb((UART_FCR_ENABLE_FIFO), &ch->ch_cls_uart->isr_fcr);
-
- writeb((UART_FCR_ENABLE_FIFO | UART_16654_FCR_RXTRIGGER_16 |
- UART_16654_FCR_TXTRIGGER_16 | UART_FCR_CLEAR_RCVR),
- &ch->ch_cls_uart->isr_fcr);
-
-}
-
-
-static inline void cls_set_no_input_flow_control(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char ier = readb(&ch->ch_cls_uart->ier);
- unsigned char isr_fcr = 0;
-
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn off IXOFF flow control, turn off RTS flow control */
- isr_fcr |= (UART_EXAR654_EFR_ECB);
- isr_fcr &= ~(UART_EXAR654_EFR_RTSDTR | UART_EXAR654_EFR_IXOFF);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /* Disable interrupts for RTS flow */
- ier &= ~(UART_EXAR654_IER_RTSDTR);
- writeb(ier, &ch->ch_cls_uart->ier);
-
- /* Set the usual FIFO values */
- writeb((UART_FCR_ENABLE_FIFO), &ch->ch_cls_uart->isr_fcr);
-
- writeb((UART_FCR_ENABLE_FIFO | UART_16654_FCR_RXTRIGGER_16 |
- UART_16654_FCR_TXTRIGGER_16 | UART_FCR_CLEAR_RCVR),
- &ch->ch_cls_uart->isr_fcr);
-
- ch->ch_t_tlevel = 16;
- ch->ch_r_tlevel = 16;
-
-}
-
-
-/*
- * cls_clear_break.
- * Determines whether its time to shut off break condition.
- *
- * No locks are assumed to be held when calling this function.
- * channel lock is held and released in this function.
- */
-static inline void cls_clear_break(struct channel_t *ch, int force)
-{
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* Bail if we aren't currently sending a break. */
- if (!ch->ch_stop_sending_break) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /* Turn break off, and unset some variables */
- if (ch->ch_flags & CH_BREAK_SENDING) {
- if (time_after(jiffies, ch->ch_stop_sending_break) || force) {
- unsigned char temp = readb(&ch->ch_cls_uart->lcr);
-
- writeb((temp & ~UART_LCR_SBC), &ch->ch_cls_uart->lcr);
- ch->ch_flags &= ~(CH_BREAK_SENDING);
- ch->ch_stop_sending_break = 0;
- }
- }
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/* Parse the ISR register for the specific port */
-static inline void cls_parse_isr(struct dgnc_board *brd, uint port)
-{
- struct channel_t *ch;
- unsigned char isr = 0;
- unsigned long flags;
-
- /*
- * No need to verify board pointer, it was already
- * verified in the interrupt routine.
- */
-
- if (port > brd->nasync)
- return;
-
- ch = brd->channels[port];
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- /* Here we try to figure out what caused the interrupt to happen */
- while (1) {
-
- isr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Bail if no pending interrupt on port */
- if (isr & UART_IIR_NO_INT)
- break;
-
- /* Receive Interrupt pending */
- if (isr & (UART_IIR_RDI | UART_IIR_RDI_TIMEOUT)) {
- /* Read data from uart -> queue */
- brd->intr_rx++;
- ch->ch_intr_rx++;
- cls_copy_data_from_uart_to_queue(ch);
- dgnc_check_queue_flow_control(ch);
- }
-
- /* Transmit Hold register empty pending */
- if (isr & UART_IIR_THRI) {
- /* Transfer data (if any) from Write Queue -> UART. */
- spin_lock_irqsave(&ch->ch_lock, flags);
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- brd->intr_tx++;
- ch->ch_intr_tx++;
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- cls_copy_data_from_queue_to_uart(ch);
- }
-
- /* CTS/RTS change of state */
- if (isr & UART_IIR_CTSRTS) {
- brd->intr_modem++;
- ch->ch_intr_modem++;
- /*
- * Don't need to do anything, the cls_parse_modem
- * below will grab the updated modem signals.
- */
- }
-
- /* Parse any modem signal changes */
- cls_parse_modem(ch, readb(&ch->ch_cls_uart->msr));
- }
-}
-
-
-/*
- * cls_param()
- * Send any/all changes to the line to the UART.
- */
-static void cls_param(struct tty_struct *tty)
-{
- unsigned char lcr = 0;
- unsigned char uart_lcr = 0;
- unsigned char ier = 0;
- unsigned char uart_ier = 0;
- uint baud = 9600;
- int quot = 0;
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = (struct un_t *) tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- /*
- * If baud rate is zero, flush queues, and set mval to drop DTR.
- */
- if ((ch->ch_c_cflag & (CBAUD)) == 0) {
- ch->ch_r_head = 0;
- ch->ch_r_tail = 0;
- ch->ch_e_head = 0;
- ch->ch_e_tail = 0;
- ch->ch_w_head = 0;
- ch->ch_w_tail = 0;
-
- cls_flush_uart_write(ch);
- cls_flush_uart_read(ch);
-
- /* The baudrate is B0 so all modem lines are to be dropped. */
- ch->ch_flags |= (CH_BAUD0);
- ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
- cls_assert_modem_signals(ch);
- ch->ch_old_baud = 0;
- return;
- } else if (ch->ch_custom_speed) {
-
- baud = ch->ch_custom_speed;
- /* Handle transition from B0 */
- if (ch->ch_flags & CH_BAUD0) {
- ch->ch_flags &= ~(CH_BAUD0);
-
- /*
- * Bring back up RTS and DTR...
- * Also handle RTS or DTR toggle if set.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat |= (UART_MCR_RTS);
- if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat |= (UART_MCR_DTR);
- }
-
- } else {
- int iindex = 0;
- int jindex = 0;
-
- ulong bauds[4][16] = {
- { /* slowbaud */
- 0, 50, 75, 110,
- 134, 150, 200, 300,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* slowbaud & CBAUDEX */
- 0, 57600, 115200, 230400,
- 460800, 150, 200, 921600,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* fastbaud */
- 0, 57600, 76800, 115200,
- 131657, 153600, 230400, 460800,
- 921600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* fastbaud & CBAUDEX */
- 0, 57600, 115200, 230400,
- 460800, 150, 200, 921600,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 }
- };
-
- /*
- * Only use the TXPrint baud rate if the terminal
- * unit is NOT open
- */
- if (!(ch->ch_tun.un_flags & UN_ISOPEN) &&
- (un->un_type == DGNC_PRINT))
- baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
- else
- baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
-
- if (ch->ch_c_cflag & CBAUDEX)
- iindex = 1;
-
- if (ch->ch_digi.digi_flags & DIGI_FAST)
- iindex += 2;
-
- jindex = baud;
-
- if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) &&
- (jindex < 16)) {
- baud = bauds[iindex][jindex];
- } else {
- baud = 0;
- }
-
- if (baud == 0)
- baud = 9600;
-
- /* Handle transition from B0 */
- if (ch->ch_flags & CH_BAUD0) {
- ch->ch_flags &= ~(CH_BAUD0);
-
- /*
- * Bring back up RTS and DTR...
- * Also handle RTS or DTR toggle if set.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat |= (UART_MCR_RTS);
- if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat |= (UART_MCR_DTR);
- }
- }
-
- if (ch->ch_c_cflag & PARENB)
- lcr |= UART_LCR_PARITY;
-
- if (!(ch->ch_c_cflag & PARODD))
- lcr |= UART_LCR_EPAR;
-
- /*
- * Not all platforms support mark/space parity,
- * so this will hide behind an ifdef.
- */
-#ifdef CMSPAR
- if (ch->ch_c_cflag & CMSPAR)
- lcr |= UART_LCR_SPAR;
-#endif
-
- if (ch->ch_c_cflag & CSTOPB)
- lcr |= UART_LCR_STOP;
-
- switch (ch->ch_c_cflag & CSIZE) {
- case CS5:
- lcr |= UART_LCR_WLEN5;
- break;
- case CS6:
- lcr |= UART_LCR_WLEN6;
- break;
- case CS7:
- lcr |= UART_LCR_WLEN7;
- break;
- case CS8:
- default:
- lcr |= UART_LCR_WLEN8;
- break;
- }
-
- uart_ier = readb(&ch->ch_cls_uart->ier);
- ier = uart_ier;
- uart_lcr = readb(&ch->ch_cls_uart->lcr);
-
- if (baud == 0)
- baud = 9600;
-
- quot = ch->ch_bd->bd_dividend / baud;
-
- if (quot != 0 && ch->ch_old_baud != baud) {
- ch->ch_old_baud = baud;
- writeb(UART_LCR_DLAB, &ch->ch_cls_uart->lcr);
- writeb((quot & 0xff), &ch->ch_cls_uart->txrx);
- writeb((quot >> 8), &ch->ch_cls_uart->ier);
- writeb(lcr, &ch->ch_cls_uart->lcr);
- }
-
- if (uart_lcr != lcr)
- writeb(lcr, &ch->ch_cls_uart->lcr);
-
- if (ch->ch_c_cflag & CREAD)
- ier |= (UART_IER_RDI | UART_IER_RLSI);
- else
- ier &= ~(UART_IER_RDI | UART_IER_RLSI);
-
- /*
- * Have the UART interrupt on modem signal changes ONLY when
- * we are in hardware flow control mode, or CLOCAL/FORCEDCD is not set.
- */
- if ((ch->ch_digi.digi_flags & CTSPACE) ||
- (ch->ch_digi.digi_flags & RTSPACE) ||
- (ch->ch_c_cflag & CRTSCTS) ||
- !(ch->ch_digi.digi_flags & DIGI_FORCEDCD) ||
- !(ch->ch_c_cflag & CLOCAL))
- ier |= UART_IER_MSI;
- else
- ier &= ~UART_IER_MSI;
-
- ier |= UART_IER_THRI;
-
- if (ier != uart_ier)
- writeb(ier, &ch->ch_cls_uart->ier);
-
- if (ch->ch_digi.digi_flags & CTSPACE || ch->ch_c_cflag & CRTSCTS) {
- cls_set_cts_flow_control(ch);
- } else if (ch->ch_c_iflag & IXON) {
- /*
- * If start/stop is set to disable, then we should
- * disable flow control
- */
- if ((ch->ch_startc == _POSIX_VDISABLE) ||
- (ch->ch_stopc == _POSIX_VDISABLE))
- cls_set_no_output_flow_control(ch);
- else
- cls_set_ixon_flow_control(ch);
- } else {
- cls_set_no_output_flow_control(ch);
- }
-
- if (ch->ch_digi.digi_flags & RTSPACE || ch->ch_c_cflag & CRTSCTS) {
- cls_set_rts_flow_control(ch);
- } else if (ch->ch_c_iflag & IXOFF) {
- /*
- * If start/stop is set to disable, then we should disable
- * flow control
- */
- if ((ch->ch_startc == _POSIX_VDISABLE) ||
- (ch->ch_stopc == _POSIX_VDISABLE))
- cls_set_no_input_flow_control(ch);
- else
- cls_set_ixoff_flow_control(ch);
- } else {
- cls_set_no_input_flow_control(ch);
- }
-
- cls_assert_modem_signals(ch);
-
- /* Get current status of the modem signals now */
- cls_parse_modem(ch, readb(&ch->ch_cls_uart->msr));
-}
-
-
-/*
- * Our board poller function.
- */
-static void cls_tasklet(unsigned long data)
-{
- struct dgnc_board *bd = (struct dgnc_board *) data;
- struct channel_t *ch;
- unsigned long flags;
- int i;
- int state = 0;
- int ports = 0;
-
- if (!bd || bd->magic != DGNC_BOARD_MAGIC) {
- APR(("poll_tasklet() - NULL or bad bd.\n"));
- return;
- }
-
- /* Cache a couple board values */
- spin_lock_irqsave(&bd->bd_lock, flags);
- state = bd->state;
- ports = bd->nasync;
- spin_unlock_irqrestore(&bd->bd_lock, flags);
-
- /*
- * Do NOT allow the interrupt routine to read the intr registers
- * Until we release this lock.
- */
- spin_lock_irqsave(&bd->bd_intr_lock, flags);
-
- /*
- * If board is ready, parse deeper to see if there is anything to do.
- */
- if ((state == BOARD_READY) && (ports > 0)) {
-
- /* Loop on each port */
- for (i = 0; i < ports; i++) {
- ch = bd->channels[i];
- if (!ch)
- continue;
-
- /*
- * NOTE: Remember you CANNOT hold any channel
- * locks when calling input.
- * During input processing, its possible we
- * will call ld, which might do callbacks back
- * into us.
- */
- dgnc_input(ch);
-
- /*
- * Channel lock is grabbed and then released
- * inside this routine.
- */
- cls_copy_data_from_queue_to_uart(ch);
- dgnc_wakeup_writes(ch);
-
- /*
- * Check carrier function.
- */
- dgnc_carrier(ch);
-
- /*
- * The timing check of turning off the break is done
- * inside clear_break()
- */
- if (ch->ch_stop_sending_break)
- cls_clear_break(ch, 0);
- }
- }
-
- spin_unlock_irqrestore(&bd->bd_intr_lock, flags);
-
-}
-
-
-/*
- * cls_intr()
- *
- * Classic specific interrupt handler.
- */
-static irqreturn_t cls_intr(int irq, void *voidbrd)
-{
- struct dgnc_board *brd = (struct dgnc_board *) voidbrd;
- uint i = 0;
- unsigned char poll_reg;
- unsigned long flags;
-
- if (!brd) {
- APR(("Received interrupt (%d) with null board associated\n",
- irq));
- return IRQ_NONE;
- }
-
- /*
- * Check to make sure its for us.
- */
- if (brd->magic != DGNC_BOARD_MAGIC) {
- APR(("Received interrupt (%d) with a board pointer that wasn't ours!\n",
- irq));
- return IRQ_NONE;
- }
-
- spin_lock_irqsave(&brd->bd_intr_lock, flags);
-
- brd->intr_count++;
-
- /*
- * Check the board's global interrupt offset to see if we
- * we actually do have an interrupt pending for us.
- */
- poll_reg = readb(brd->re_map_membase + UART_CLASSIC_POLL_ADDR_OFFSET);
-
- /* If 0, no interrupts pending */
- if (!poll_reg) {
- spin_unlock_irqrestore(&brd->bd_intr_lock, flags);
- return IRQ_NONE;
- }
-
- /* Parse each port to find out what caused the interrupt */
- for (i = 0; i < brd->nasync; i++)
- cls_parse_isr(brd, i);
-
- /*
- * Schedule tasklet to more in-depth servicing at a better time.
- */
- tasklet_schedule(&brd->helper_tasklet);
-
- spin_unlock_irqrestore(&brd->bd_intr_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-
-static void cls_disable_receiver(struct channel_t *ch)
-{
- unsigned char tmp = readb(&ch->ch_cls_uart->ier);
-
- tmp &= ~(UART_IER_RDI);
- writeb(tmp, &ch->ch_cls_uart->ier);
-}
-
-
-static void cls_enable_receiver(struct channel_t *ch)
-{
- unsigned char tmp = readb(&ch->ch_cls_uart->ier);
-
- tmp |= (UART_IER_RDI);
- writeb(tmp, &ch->ch_cls_uart->ier);
-}
-
-
-static void cls_copy_data_from_uart_to_queue(struct channel_t *ch)
-{
- int qleft = 0;
- unsigned char linestatus = 0;
- unsigned char error_mask = 0;
- ushort head;
- ushort tail;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* cache head and tail of queue */
- head = ch->ch_r_head;
- tail = ch->ch_r_tail;
-
- /* Store how much space we have left in the queue */
- qleft = (tail - head - 1);
- if (qleft < 0)
- qleft += RQUEUEMASK + 1;
-
- /*
- * Create a mask to determine whether we should
- * insert the character (if any) into our queue.
- */
- if (ch->ch_c_iflag & IGNBRK)
- error_mask |= UART_LSR_BI;
-
- while (1) {
- linestatus = readb(&ch->ch_cls_uart->lsr);
-
- if (!(linestatus & (UART_LSR_DR)))
- break;
-
- /*
- * Discard character if we are ignoring the error mask.
- */
- if (linestatus & error_mask) {
- unsigned char discard;
-
- linestatus = 0;
- discard = readb(&ch->ch_cls_uart->txrx);
- continue;
- }
-
- /*
- * If our queue is full, we have no choice but to drop some
- * data. The assumption is that HWFLOW or SWFLOW should have
- * stopped things way way before we got to this point.
- *
- * I decided that I wanted to ditch the oldest data first,
- * I hope thats okay with everyone? Yes? Good.
- */
- while (qleft < 1) {
- tail = (tail + 1) & RQUEUEMASK;
- ch->ch_r_tail = tail;
- ch->ch_err_overrun++;
- qleft++;
- }
-
- ch->ch_equeue[head] = linestatus & (UART_LSR_BI | UART_LSR_PE
- | UART_LSR_FE);
- ch->ch_rqueue[head] = readb(&ch->ch_cls_uart->txrx);
- dgnc_sniff_nowait_nolock(ch, "UART READ",
- ch->ch_rqueue + head, 1);
-
- qleft--;
-
- if (ch->ch_equeue[head] & UART_LSR_PE)
- ch->ch_err_parity++;
- if (ch->ch_equeue[head] & UART_LSR_BI)
- ch->ch_err_break++;
- if (ch->ch_equeue[head] & UART_LSR_FE)
- ch->ch_err_frame++;
-
- /* Add to, and flip head if needed */
- head = (head + 1) & RQUEUEMASK;
- ch->ch_rxcount++;
- }
-
- /*
- * Write new final heads to channel structure.
- */
- ch->ch_r_head = head & RQUEUEMASK;
- ch->ch_e_head = head & EQUEUEMASK;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/*
- * This function basically goes to sleep for secs, or until
- * it gets signalled that the port has fully drained.
- */
-static int cls_drain(struct tty_struct *tty, uint seconds)
-{
- unsigned long flags;
- struct channel_t *ch;
- struct un_t *un;
- int rc = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -ENXIO;
-
- un = (struct un_t *) tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return -ENXIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENXIO;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- un->un_flags |= UN_EMPTY;
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /*
- * NOTE: Do something with time passed in.
- */
- rc = wait_event_interruptible(un->un_flags_wait,
- ((un->un_flags & UN_EMPTY) == 0));
-
- /* If ret is non-zero, user ctrl-c'ed us */
-
- return rc;
-}
-
-
-/* Channel lock MUST be held before calling this function! */
-static void cls_flush_uart_write(struct channel_t *ch)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- writeb((UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_XMIT),
- &ch->ch_cls_uart->isr_fcr);
- udelay(10);
-
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-}
-
-
-/* Channel lock MUST be held before calling this function! */
-static void cls_flush_uart_read(struct channel_t *ch)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- /*
- * For complete POSIX compatibility, we should be purging the
- * read FIFO in the UART here.
- *
- * However, clearing the read FIFO (UART_FCR_CLEAR_RCVR) also
- * incorrectly flushes write data as well as just basically trashing the
- * FIFO.
- *
- * Presumably, this is a bug in this UART.
- */
-
- udelay(10);
-}
-
-
-static void cls_copy_data_from_queue_to_uart(struct channel_t *ch)
-{
- ushort head;
- ushort tail;
- int n;
- int qlen;
- uint len_written = 0;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* No data to write to the UART */
- if (ch->ch_w_tail == ch->ch_w_head) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /* If port is "stopped", don't send any data to the UART */
- if ((ch->ch_flags & CH_FORCED_STOP) ||
- (ch->ch_flags & CH_BREAK_SENDING)) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- if (!(ch->ch_flags & (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM))) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- n = 32;
-
- /* cache head and tail of queue */
- head = ch->ch_w_head & WQUEUEMASK;
- tail = ch->ch_w_tail & WQUEUEMASK;
- qlen = (head - tail) & WQUEUEMASK;
-
- /* Find minimum of the FIFO space, versus queue length */
- n = min(n, qlen);
-
- while (n > 0) {
-
- /*
- * If RTS Toggle mode is on, turn on RTS now if not already set,
- * and make sure we get an event when the data transfer has
- * completed.
- */
- if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
- if (!(ch->ch_mostat & UART_MCR_RTS)) {
- ch->ch_mostat |= (UART_MCR_RTS);
- cls_assert_modem_signals(ch);
- }
- ch->ch_tun.un_flags |= (UN_EMPTY);
- }
-
- /*
- * If DTR Toggle mode is on, turn on DTR now if not already set,
- * and make sure we get an event when the data transfer has
- * completed.
- */
- if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
- if (!(ch->ch_mostat & UART_MCR_DTR)) {
- ch->ch_mostat |= (UART_MCR_DTR);
- cls_assert_modem_signals(ch);
- }
- ch->ch_tun.un_flags |= (UN_EMPTY);
- }
- writeb(ch->ch_wqueue[ch->ch_w_tail], &ch->ch_cls_uart->txrx);
- dgnc_sniff_nowait_nolock(ch, "UART WRITE",
- ch->ch_wqueue + ch->ch_w_tail, 1);
- ch->ch_w_tail++;
- ch->ch_w_tail &= WQUEUEMASK;
- ch->ch_txcount++;
- len_written++;
- n--;
- }
-
- if (len_written > 0)
- ch->ch_flags &= ~(CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-static void cls_parse_modem(struct channel_t *ch, unsigned char signals)
-{
- unsigned char msignals = signals;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- /*
- * Do altpin switching. Altpin switches DCD and DSR.
- * This prolly breaks DSRPACE, so we should be more clever here.
- */
- spin_lock_irqsave(&ch->ch_lock, flags);
- if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
- unsigned char mswap = signals;
-
- if (mswap & UART_MSR_DDCD) {
- msignals &= ~UART_MSR_DDCD;
- msignals |= UART_MSR_DDSR;
- }
- if (mswap & UART_MSR_DDSR) {
- msignals &= ~UART_MSR_DDSR;
- msignals |= UART_MSR_DDCD;
- }
- if (mswap & UART_MSR_DCD) {
- msignals &= ~UART_MSR_DCD;
- msignals |= UART_MSR_DSR;
- }
- if (mswap & UART_MSR_DSR) {
- msignals &= ~UART_MSR_DSR;
- msignals |= UART_MSR_DCD;
- }
- }
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /*
- * Scrub off lower bits. They signify delta's, which I don't
- * care about
- */
- signals &= 0xf0;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- if (msignals & UART_MSR_DCD)
- ch->ch_mistat |= UART_MSR_DCD;
- else
- ch->ch_mistat &= ~UART_MSR_DCD;
-
- if (msignals & UART_MSR_DSR)
- ch->ch_mistat |= UART_MSR_DSR;
- else
- ch->ch_mistat &= ~UART_MSR_DSR;
-
- if (msignals & UART_MSR_RI)
- ch->ch_mistat |= UART_MSR_RI;
- else
- ch->ch_mistat &= ~UART_MSR_RI;
-
- if (msignals & UART_MSR_CTS)
- ch->ch_mistat |= UART_MSR_CTS;
- else
- ch->ch_mistat &= ~UART_MSR_CTS;
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/* Make the UART raise any of the output signals we want up */
-static void cls_assert_modem_signals(struct channel_t *ch)
-{
- unsigned char out;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- out = ch->ch_mostat;
-
- if (ch->ch_flags & CH_LOOPBACK)
- out |= UART_MCR_LOOP;
-
- writeb(out, &ch->ch_cls_uart->mcr);
-
- /* Give time for the UART to actually drop the signals */
- udelay(10);
-}
-
-
-static void cls_send_start_character(struct channel_t *ch)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- if (ch->ch_startc != _POSIX_VDISABLE) {
- ch->ch_xon_sends++;
- writeb(ch->ch_startc, &ch->ch_cls_uart->txrx);
- }
-}
-
-
-static void cls_send_stop_character(struct channel_t *ch)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- if (ch->ch_stopc != _POSIX_VDISABLE) {
- ch->ch_xoff_sends++;
- writeb(ch->ch_stopc, &ch->ch_cls_uart->txrx);
- }
-}
-
-
-/* Inits UART */
-static void cls_uart_init(struct channel_t *ch)
-{
- unsigned char lcrb = readb(&ch->ch_cls_uart->lcr);
- unsigned char isr_fcr = 0;
-
- writeb(0, &ch->ch_cls_uart->ier);
-
- /*
- * The Enhanced Register Set may only be accessed when
- * the Line Control Register is set to 0xBFh.
- */
- writeb(UART_EXAR654_ENHANCED_REGISTER_SET, &ch->ch_cls_uart->lcr);
-
- isr_fcr = readb(&ch->ch_cls_uart->isr_fcr);
-
- /* Turn on Enhanced/Extended controls */
- isr_fcr |= (UART_EXAR654_EFR_ECB);
-
- writeb(isr_fcr, &ch->ch_cls_uart->isr_fcr);
-
- /* Write old LCR value back out, which turns enhanced access off */
- writeb(lcrb, &ch->ch_cls_uart->lcr);
-
- /* Clear out UART and FIFO */
- readb(&ch->ch_cls_uart->txrx);
-
- writeb((UART_FCR_ENABLE_FIFO|UART_FCR_CLEAR_RCVR|UART_FCR_CLEAR_XMIT),
- &ch->ch_cls_uart->isr_fcr);
- udelay(10);
-
- ch->ch_flags |= (CH_FIFO_ENABLED | CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-
- readb(&ch->ch_cls_uart->lsr);
- readb(&ch->ch_cls_uart->msr);
-}
-
-
-/*
- * Turns off UART.
- */
-static void cls_uart_off(struct channel_t *ch)
-{
- writeb(0, &ch->ch_cls_uart->ier);
-}
-
-
-/*
- * cls_get_uarts_bytes_left.
- * Returns 0 is nothing left in the FIFO, returns 1 otherwise.
- *
- * The channel lock MUST be held by the calling function.
- */
-static uint cls_get_uart_bytes_left(struct channel_t *ch)
-{
- unsigned char left = 0;
- unsigned char lsr = 0;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
-
- lsr = readb(&ch->ch_cls_uart->lsr);
-
- /* Determine whether the Transmitter is empty or not */
- if (!(lsr & UART_LSR_TEMT)) {
- if (ch->ch_flags & CH_TX_FIFO_EMPTY)
- tasklet_schedule(&ch->ch_bd->helper_tasklet);
- left = 1;
- } else {
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- left = 0;
- }
-
- return left;
-}
-
-
-/*
- * cls_send_break.
- * Starts sending a break thru the UART.
- *
- * The channel lock MUST be held by the calling function.
- */
-static void cls_send_break(struct channel_t *ch, int msecs)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- /*
- * If we receive a time of 0, this means turn off the break.
- */
- if (msecs == 0) {
- /* Turn break off, and unset some variables */
- if (ch->ch_flags & CH_BREAK_SENDING) {
- unsigned char temp = readb(&ch->ch_cls_uart->lcr);
-
- writeb((temp & ~UART_LCR_SBC), &ch->ch_cls_uart->lcr);
- ch->ch_flags &= ~(CH_BREAK_SENDING);
- ch->ch_stop_sending_break = 0;
- }
- return;
- }
-
- /*
- * Set the time we should stop sending the break.
- * If we are already sending a break, toss away the existing
- * time to stop, and use this new value instead.
- */
- ch->ch_stop_sending_break = jiffies + dgnc_jiffies_from_ms(msecs);
-
- /* Tell the UART to start sending the break */
- if (!(ch->ch_flags & CH_BREAK_SENDING)) {
- unsigned char temp = readb(&ch->ch_cls_uart->lcr);
-
- writeb((temp | UART_LCR_SBC), &ch->ch_cls_uart->lcr);
- ch->ch_flags |= (CH_BREAK_SENDING);
- }
-}
-
-
-/*
- * cls_send_immediate_char.
- * Sends a specific character as soon as possible to the UART,
- * jumping over any bytes that might be in the write queue.
- *
- * The channel lock MUST be held by the calling function.
- */
-static void cls_send_immediate_char(struct channel_t *ch, unsigned char c)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- writeb(c, &ch->ch_cls_uart->txrx);
-}
-
-static void cls_vpd(struct dgnc_board *brd)
-{
- ulong vpdbase; /* Start of io base of the card */
- u8 __iomem *re_map_vpdbase;/* Remapped memory of the card */
- int i = 0;
-
-
- vpdbase = pci_resource_start(brd->pdev, 3);
-
- /* No VPD */
- if (!vpdbase)
- return;
-
- re_map_vpdbase = ioremap(vpdbase, 0x400);
-
- if (!re_map_vpdbase)
- return;
-
- /* Store the VPD into our buffer */
- for (i = 0; i < 0x40; i++) {
- brd->vpd[i] = readb(re_map_vpdbase + i);
- pr_info("%x ", brd->vpd[i]);
- }
- pr_info("\n");
-
- if (re_map_vpdbase)
- iounmap(re_map_vpdbase);
-}
-
diff --git a/drivers/staging/dgnc/dgnc_cls.h b/drivers/staging/dgnc/dgnc_cls.h
deleted file mode 100644
index 465d79a..0000000
--- a/drivers/staging/dgnc/dgnc_cls.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- */
-
-#ifndef __DGNC_CLS_H
-#define __DGNC_CLS_H
-
-#include "dgnc_types.h"
-
-
-/************************************************************************
- * Per channel/port Classic UART structure *
- ************************************************************************
- * Base Structure Entries Usage Meanings to Host *
- * *
- * W = read write R = read only *
- * U = Unused. *
- ************************************************************************/
-
-struct cls_uart_struct {
- u8 txrx; /* WR RHR/THR - Holding Reg */
- u8 ier; /* WR IER - Interrupt Enable Reg */
- u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
- u8 lcr; /* WR LCR - Line Control Reg */
- u8 mcr; /* WR MCR - Modem Control Reg */
- u8 lsr; /* WR LSR - Line Status Reg */
- u8 msr; /* WR MSR - Modem Status Reg */
- u8 spr; /* WR SPR - Scratch Pad Reg */
-};
-
-/* Where to read the interrupt register (8bits) */
-#define UART_CLASSIC_POLL_ADDR_OFFSET 0x40
-
-#define UART_EXAR654_ENHANCED_REGISTER_SET 0xBF
-
-#define UART_16654_FCR_TXTRIGGER_8 0x0
-#define UART_16654_FCR_TXTRIGGER_16 0x10
-#define UART_16654_FCR_TXTRIGGER_32 0x20
-#define UART_16654_FCR_TXTRIGGER_56 0x30
-
-#define UART_16654_FCR_RXTRIGGER_8 0x0
-#define UART_16654_FCR_RXTRIGGER_16 0x40
-#define UART_16654_FCR_RXTRIGGER_56 0x80
-#define UART_16654_FCR_RXTRIGGER_60 0xC0
-
-#define UART_IIR_CTSRTS 0x20 /* Received CTS/RTS change of state */
-#define UART_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
-
-/*
- * These are the EXTENDED definitions for the Exar 654's Interrupt
- * Enable Register.
- */
-#define UART_EXAR654_EFR_ECB 0x10 /* Enhanced control bit */
-#define UART_EXAR654_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
-#define UART_EXAR654_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
-#define UART_EXAR654_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
-#define UART_EXAR654_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
-
-#define UART_EXAR654_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
-#define UART_EXAR654_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
-
-#define UART_EXAR654_IER_XOFF 0x20 /* Xoff Interrupt Enable */
-#define UART_EXAR654_IER_RTSDTR 0x40 /* Output Interrupt Enable */
-#define UART_EXAR654_IER_CTSDSR 0x80 /* Input Interrupt Enable */
-
-/*
- * Our Global Variables
- */
-extern struct board_ops dgnc_cls_ops;
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_driver.c b/drivers/staging/dgnc/dgnc_driver.c
deleted file mode 100644
index 2154665..0000000
--- a/drivers/staging/dgnc/dgnc_driver.c
+++ /dev/null
@@ -1,757 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- *
- */
-
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include "dgnc_driver.h"
-#include "dgnc_pci.h"
-#include "dpacompat.h"
-#include "dgnc_mgmt.h"
-#include "dgnc_tty.h"
-#include "dgnc_cls.h"
-#include "dgnc_neo.h"
-#include "dgnc_sysfs.h"
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Digi International, http://www.digi.com";);
-MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
-MODULE_SUPPORTED_DEVICE("dgnc");
-
-/*
- * insmod command line overrideable parameters
- *
- * NOTE: we use a set of macros to create the variables, which allows
- * us to specify the variable type, name, initial value, and description.
- */
-PARM_INT(debug, 0x00, 0644, "Driver debugging level");
-PARM_INT(rawreadok, 1, 0644, "Bypass flip buffers on input");
-PARM_INT(trcbuf_size, 0x100000, 0644, "Debugging trace buffer size.");
-
-/**************************************************************************
- *
- * protos for this file
- *
- */
-static int dgnc_start(void);
-static int dgnc_finalize_board_init(struct dgnc_board *brd);
-static void dgnc_init_globals(void);
-static int dgnc_found_board(struct pci_dev *pdev, int id);
-static void dgnc_cleanup_board(struct dgnc_board *brd);
-static void dgnc_poll_handler(ulong dummy);
-static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
-static void dgnc_do_remap(struct dgnc_board *brd);
-
-/*
- * File operations permitted on Control/Management major.
- */
-static const struct file_operations dgnc_BoardFops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = dgnc_mgmt_ioctl,
- .open = dgnc_mgmt_open,
- .release = dgnc_mgmt_close
-};
-
-
-/*
- * Globals
- */
-uint dgnc_NumBoards;
-struct dgnc_board *dgnc_Board[MAXBOARDS];
-DEFINE_SPINLOCK(dgnc_global_lock);
-uint dgnc_Major;
-int dgnc_poll_tick = 20; /* Poll interval - 20 ms */
-
-/*
- * Static vars.
- */
-static struct class *dgnc_class;
-
-/*
- * Poller stuff
- */
-static DEFINE_SPINLOCK(dgnc_poll_lock); /* Poll scheduling lock */
-static ulong dgnc_poll_time; /* Time of next poll */
-static uint dgnc_poll_stop; /* Used to tell poller to stop */
-static struct timer_list dgnc_poll_timer;
-
-
-static struct pci_device_id dgnc_pci_tbl[] = {
- { DIGI_VID, PCI_DEVICE_CLASSIC_4_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { DIGI_VID, PCI_DEVICE_CLASSIC_4_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
- { DIGI_VID, PCI_DEVICE_CLASSIC_8_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
- { DIGI_VID, PCI_DEVICE_CLASSIC_8_422_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
- {0,} /* 0 terminated list. */
-};
-MODULE_DEVICE_TABLE(pci, dgnc_pci_tbl);
-
-struct board_id {
- unsigned char *name;
- uint maxports;
- unsigned int is_pci_express;
-};
-
-static struct board_id dgnc_Ids[] = {
- { PCI_DEVICE_CLASSIC_4_PCI_NAME, 4, 0 },
- { PCI_DEVICE_CLASSIC_4_422_PCI_NAME, 4, 0 },
- { PCI_DEVICE_CLASSIC_8_PCI_NAME, 8, 0 },
- { PCI_DEVICE_CLASSIC_8_422_PCI_NAME, 8, 0 },
- { PCI_DEVICE_NEO_4_PCI_NAME, 4, 0 },
- { PCI_DEVICE_NEO_8_PCI_NAME, 8, 0 },
- { PCI_DEVICE_NEO_2DB9_PCI_NAME, 2, 0 },
- { PCI_DEVICE_NEO_2DB9PRI_PCI_NAME, 2, 0 },
- { PCI_DEVICE_NEO_2RJ45_PCI_NAME, 2, 0 },
- { PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME, 2, 0 },
- { PCI_DEVICE_NEO_1_422_PCI_NAME, 1, 0 },
- { PCI_DEVICE_NEO_1_422_485_PCI_NAME, 1, 0 },
- { PCI_DEVICE_NEO_2_422_485_PCI_NAME, 2, 0 },
- { PCI_DEVICE_NEO_EXPRESS_8_PCI_NAME, 8, 1 },
- { PCI_DEVICE_NEO_EXPRESS_4_PCI_NAME, 4, 1 },
- { PCI_DEVICE_NEO_EXPRESS_4RJ45_PCI_NAME, 4, 1 },
- { PCI_DEVICE_NEO_EXPRESS_8RJ45_PCI_NAME, 8, 1 },
- { NULL, 0, 0 }
-};
-
-static struct pci_driver dgnc_driver = {
- .name = "dgnc",
- .probe = dgnc_init_one,
- .id_table = dgnc_pci_tbl,
-};
-
-
-char *dgnc_state_text[] = {
- "Board Failed",
- "Board Found",
- "Board READY",
-};
-
-
-/************************************************************************
- *
- * Driver load/unload functions
- *
- ************************************************************************/
-
-/*
- * dgnc_cleanup_module()
- *
- * Module unload. This is where it all ends.
- */
-static void dgnc_cleanup_module(void)
-{
- int i;
- unsigned long flags;
-
- spin_lock_irqsave(&dgnc_poll_lock, flags);
- dgnc_poll_stop = 1;
- spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
- /* Turn off poller right away. */
- del_timer_sync(&dgnc_poll_timer);
-
- dgnc_remove_driver_sysfiles(&dgnc_driver);
-
- device_destroy(dgnc_class, MKDEV(dgnc_Major, 0));
- class_destroy(dgnc_class);
- unregister_chrdev(dgnc_Major, "dgnc");
-
- for (i = 0; i < dgnc_NumBoards; ++i) {
- dgnc_remove_ports_sysfiles(dgnc_Board[i]);
- dgnc_tty_uninit(dgnc_Board[i]);
- dgnc_cleanup_board(dgnc_Board[i]);
- }
-
- dgnc_tty_post_uninit();
-
- if (dgnc_NumBoards)
- pci_unregister_driver(&dgnc_driver);
-}
-
-/*
- * init_module()
- *
- * Module load. This is where it all starts.
- */
-static int __init dgnc_init_module(void)
-{
- int rc = 0;
-
- APR(("%s, Digi International Part Number %s\n", DG_NAME, DG_PART));
-
- /*
- * Initialize global stuff
- */
- rc = dgnc_start();
-
- if (rc < 0)
- return rc;
-
- /*
- * Find and configure all the cards
- */
- rc = pci_register_driver(&dgnc_driver);
-
- /*
- * If something went wrong in the scan, bail out of driver.
- */
- if (rc < 0) {
- /* Only unregister the pci driver if it was actually registered. */
- if (dgnc_NumBoards)
- pci_unregister_driver(&dgnc_driver);
- else
- pr_warn("WARNING: dgnc driver load failed. No Digi Neo or Classic boards found.\n");
-
- dgnc_cleanup_module();
- } else {
- dgnc_create_driver_sysfiles(&dgnc_driver);
- }
-
- return rc;
-}
-
-module_init(dgnc_init_module);
-module_exit(dgnc_cleanup_module);
-
-/*
- * Start of driver.
- */
-static int dgnc_start(void)
-{
- int rc = 0;
- unsigned long flags;
-
- /* make sure that the globals are init'd before we do anything else */
- dgnc_init_globals();
-
- APR(("For the tools package or updated drivers please visit http://www.digi.com\n";));
-
- /*
- * Register our base character device into the kernel.
- * This allows the download daemon to connect to the downld device
- * before any of the boards are init'ed.
- *
- * Register management/dpa devices
- */
- rc = register_chrdev(0, "dgnc", &dgnc_BoardFops);
- if (rc <= 0) {
- APR(("Can't register dgnc driver device (%d)\n", rc));
- return -ENXIO;
- }
- dgnc_Major = rc;
-
- dgnc_class = class_create(THIS_MODULE, "dgnc_mgmt");
- device_create(dgnc_class, NULL,
- MKDEV(dgnc_Major, 0),
- NULL, "dgnc_mgmt");
-
- /*
- * Init any global tty stuff.
- */
- rc = dgnc_tty_preinit();
-
- if (rc < 0) {
- APR(("tty preinit - not enough memory (%d)\n", rc));
- return rc;
- }
-
- /* Start the poller */
- spin_lock_irqsave(&dgnc_poll_lock, flags);
- init_timer(&dgnc_poll_timer);
- dgnc_poll_timer.function = dgnc_poll_handler;
- dgnc_poll_timer.data = 0;
- dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
- dgnc_poll_timer.expires = dgnc_poll_time;
- spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
- add_timer(&dgnc_poll_timer);
-
- return rc;
-}
-
-/* returns count (>= 0), or negative on error */
-static int dgnc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
- int rc;
-
- /* wake up and enable device */
- rc = pci_enable_device(pdev);
-
- if (rc < 0) {
- rc = -EIO;
- } else {
- rc = dgnc_found_board(pdev, ent->driver_data);
- if (rc == 0)
- dgnc_NumBoards++;
- }
- return rc;
-}
-
-/*
- * dgnc_cleanup_board()
- *
- * Free all the memory associated with a board
- */
-static void dgnc_cleanup_board(struct dgnc_board *brd)
-{
- int i = 0;
-
- if (!brd || brd->magic != DGNC_BOARD_MAGIC)
- return;
-
- switch (brd->device) {
- case PCI_DEVICE_CLASSIC_4_DID:
- case PCI_DEVICE_CLASSIC_8_DID:
- case PCI_DEVICE_CLASSIC_4_422_DID:
- case PCI_DEVICE_CLASSIC_8_422_DID:
-
- /* Tell card not to interrupt anymore. */
- outb(0, brd->iobase + 0x4c);
- break;
-
- default:
- break;
- }
-
- if (brd->irq)
- free_irq(brd->irq, brd);
-
- tasklet_kill(&brd->helper_tasklet);
-
- if (brd->re_map_membase) {
- iounmap(brd->re_map_membase);
- brd->re_map_membase = NULL;
- }
-
- if (brd->msgbuf_head) {
- unsigned long flags;
-
- spin_lock_irqsave(&dgnc_global_lock, flags);
- brd->msgbuf = NULL;
- printk("%s", brd->msgbuf_head);
- kfree(brd->msgbuf_head);
- brd->msgbuf_head = NULL;
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
- }
-
- /* Free all allocated channels structs */
- for (i = 0; i < MAXPORTS ; i++) {
- if (brd->channels[i]) {
- kfree(brd->channels[i]->ch_rqueue);
- kfree(brd->channels[i]->ch_equeue);
- kfree(brd->channels[i]->ch_wqueue);
- kfree(brd->channels[i]);
- brd->channels[i] = NULL;
- }
- }
-
- kfree(brd->flipbuf);
-
- dgnc_Board[brd->boardnum] = NULL;
-
- kfree(brd);
-}
-
-
-/*
- * dgnc_found_board()
- *
- * A board has been found, init it.
- */
-static int dgnc_found_board(struct pci_dev *pdev, int id)
-{
- struct dgnc_board *brd;
- unsigned int pci_irq;
- int i = 0;
- int rc = 0;
- unsigned long flags;
-
- /* get the board structure and prep it */
- dgnc_Board[dgnc_NumBoards] = kzalloc(sizeof(*brd), GFP_KERNEL);
- brd = dgnc_Board[dgnc_NumBoards];
-
- if (!brd)
- return -ENOMEM;
-
- /* make a temporary message buffer for the boot messages */
- brd->msgbuf_head = kzalloc(sizeof(u8) * 8192, GFP_KERNEL);
- brd->msgbuf = brd->msgbuf_head;
-
- if (!brd->msgbuf) {
- kfree(brd);
- return -ENOMEM;
- }
-
- /* store the info for the board we've found */
- brd->magic = DGNC_BOARD_MAGIC;
- brd->boardnum = dgnc_NumBoards;
- brd->vendor = dgnc_pci_tbl[id].vendor;
- brd->device = dgnc_pci_tbl[id].device;
- brd->pdev = pdev;
- brd->pci_bus = pdev->bus->number;
- brd->pci_slot = PCI_SLOT(pdev->devfn);
- brd->name = dgnc_Ids[id].name;
- brd->maxports = dgnc_Ids[id].maxports;
- if (dgnc_Ids[i].is_pci_express)
- brd->bd_flags |= BD_IS_PCI_EXPRESS;
- brd->dpastatus = BD_NOFEP;
- init_waitqueue_head(&brd->state_wait);
-
- spin_lock_init(&brd->bd_lock);
- spin_lock_init(&brd->bd_intr_lock);
-
- brd->state = BOARD_FOUND;
-
- for (i = 0; i < MAXPORTS; i++)
- brd->channels[i] = NULL;
-
- /* store which card & revision we have */
- pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
- pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
- pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
-
- pci_irq = pdev->irq;
- brd->irq = pci_irq;
-
-
- switch (brd->device) {
-
- case PCI_DEVICE_CLASSIC_4_DID:
- case PCI_DEVICE_CLASSIC_8_DID:
- case PCI_DEVICE_CLASSIC_4_422_DID:
- case PCI_DEVICE_CLASSIC_8_422_DID:
-
- brd->dpatype = T_CLASSIC | T_PCIBUS;
-
- /*
- * For PCI ClassicBoards
- * PCI Local Address (i.e. "resource" number) space
- * 0 PLX Memory Mapped Config
- * 1 PLX I/O Mapped Config
- * 2 I/O Mapped UARTs and Status
- * 3 Memory Mapped VPD
- * 4 Memory Mapped UARTs and Status
- */
-
-
- /* get the PCI Base Address Registers */
- brd->membase = pci_resource_start(pdev, 4);
-
- if (!brd->membase) {
- APR(("card has no PCI IO resources, failing board.\n"));
- return -ENODEV;
- }
-
- brd->membase_end = pci_resource_end(pdev, 4);
-
- if (brd->membase & 1)
- brd->membase &= ~3;
- else
- brd->membase &= ~15;
-
- brd->iobase = pci_resource_start(pdev, 1);
- brd->iobase_end = pci_resource_end(pdev, 1);
- brd->iobase = ((unsigned int) (brd->iobase)) & 0xFFFE;
-
- /* Assign the board_ops struct */
- brd->bd_ops = &dgnc_cls_ops;
-
- brd->bd_uart_offset = 0x8;
- brd->bd_dividend = 921600;
-
- dgnc_do_remap(brd);
-
- /* Get and store the board VPD, if it exists */
- brd->bd_ops->vpd(brd);
-
- /*
- * Enable Local Interrupt 1 (0x1),
- * Local Interrupt 1 Polarity Active high (0x2),
- * Enable PCI interrupt (0x40)
- */
- outb(0x43, brd->iobase + 0x4c);
-
- break;
-
-
- case PCI_DEVICE_NEO_4_DID:
- case PCI_DEVICE_NEO_8_DID:
- case PCI_DEVICE_NEO_2DB9_DID:
- case PCI_DEVICE_NEO_2DB9PRI_DID:
- case PCI_DEVICE_NEO_2RJ45_DID:
- case PCI_DEVICE_NEO_2RJ45PRI_DID:
- case PCI_DEVICE_NEO_1_422_DID:
- case PCI_DEVICE_NEO_1_422_485_DID:
- case PCI_DEVICE_NEO_2_422_485_DID:
- case PCI_DEVICE_NEO_EXPRESS_8_DID:
- case PCI_DEVICE_NEO_EXPRESS_4_DID:
- case PCI_DEVICE_NEO_EXPRESS_4RJ45_DID:
- case PCI_DEVICE_NEO_EXPRESS_8RJ45_DID:
-
- /*
- * This chip is set up 100% when we get to it.
- * No need to enable global interrupts or anything.
- */
- if (brd->bd_flags & BD_IS_PCI_EXPRESS)
- brd->dpatype = T_NEO_EXPRESS | T_PCIBUS;
- else
- brd->dpatype = T_NEO | T_PCIBUS;
-
- /* get the PCI Base Address Registers */
- brd->membase = pci_resource_start(pdev, 0);
- brd->membase_end = pci_resource_end(pdev, 0);
-
- if (brd->membase & 1)
- brd->membase &= ~3;
- else
- brd->membase &= ~15;
-
- /* Assign the board_ops struct */
- brd->bd_ops = &dgnc_neo_ops;
-
- brd->bd_uart_offset = 0x200;
- brd->bd_dividend = 921600;
-
- dgnc_do_remap(brd);
-
- if (brd->re_map_membase) {
-
- /* After remap is complete, we need to read and store the dvid */
- brd->dvid = readb(brd->re_map_membase + 0x8D);
-
- /* Get and store the board VPD, if it exists */
- brd->bd_ops->vpd(brd);
- }
- break;
-
- default:
- APR(("Did not find any compatible Neo or Classic PCI boards in system.\n"));
- return -ENXIO;
-
- }
-
- /*
- * Do tty device initialization.
- */
-
- rc = dgnc_tty_register(brd);
- if (rc < 0) {
- dgnc_tty_uninit(brd);
- APR(("Can't register tty devices (%d)\n", rc));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- goto failed;
- }
-
- rc = dgnc_finalize_board_init(brd);
- if (rc < 0) {
- APR(("Can't finalize board init (%d)\n", rc));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
-
- goto failed;
- }
-
- rc = dgnc_tty_init(brd);
- if (rc < 0) {
- dgnc_tty_uninit(brd);
- APR(("Can't init tty devices (%d)\n", rc));
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
-
- goto failed;
- }
-
- brd->state = BOARD_READY;
- brd->dpastatus = BD_RUNNING;
-
- dgnc_create_ports_sysfiles(brd);
-
- /* init our poll helper tasklet */
- tasklet_init(&brd->helper_tasklet, brd->bd_ops->tasklet, (unsigned long) brd);
-
- spin_lock_irqsave(&dgnc_global_lock, flags);
- brd->msgbuf = NULL;
- printk("%s", brd->msgbuf_head);
- kfree(brd->msgbuf_head);
- brd->msgbuf_head = NULL;
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
-
- /*
- * allocate flip buffer for board.
- *
- * Okay to malloc with GFP_KERNEL, we are not at interrupt
- * context, and there are no locks held.
- */
- brd->flipbuf = kzalloc(MYFLIPLEN, GFP_KERNEL);
-
- wake_up_interruptible(&brd->state_wait);
-
- return 0;
-
-failed:
-
- return -ENXIO;
-
-}
-
-
-static int dgnc_finalize_board_init(struct dgnc_board *brd)
-{
- int rc = 0;
-
- if (!brd || brd->magic != DGNC_BOARD_MAGIC)
- return -ENODEV;
-
- if (brd->irq) {
- rc = request_irq(brd->irq, brd->bd_ops->intr,
- IRQF_SHARED, "DGNC", brd);
-
- if (rc) {
- dev_err(&brd->pdev->dev,
- "Failed to hook IRQ %d\n", brd->irq);
- brd->state = BOARD_FAILED;
- brd->dpastatus = BD_NOFEP;
- rc = -ENODEV;
- }
- }
- return rc;
-}
-
-/*
- * Remap PCI memory.
- */
-static void dgnc_do_remap(struct dgnc_board *brd)
-{
-
- if (!brd || brd->magic != DGNC_BOARD_MAGIC)
- return;
-
- brd->re_map_membase = ioremap(brd->membase, 0x1000);
-}
-
-
-/*****************************************************************************
-*
-* Function:
-*
-* dgnc_poll_handler
-*
-* Author:
-*
-* Scott H Kilau
-*
-* Parameters:
-*
-* dummy -- ignored
-*
-* Return Values:
-*
-* none
-*
-* Description:
-*
-* As each timer expires, it determines (a) whether the "transmit"
-* waiter needs to be woken up, and (b) whether the poller needs to
-* be rescheduled.
-*
-******************************************************************************/
-
-static void dgnc_poll_handler(ulong dummy)
-{
- struct dgnc_board *brd;
- unsigned long flags;
- int i;
- unsigned long new_time;
-
- /* Go thru each board, kicking off a tasklet for each if needed */
- for (i = 0; i < dgnc_NumBoards; i++) {
- brd = dgnc_Board[i];
-
- spin_lock_irqsave(&brd->bd_lock, flags);
-
- /* If board is in a failed state, don't bother scheduling a tasklet */
- if (brd->state == BOARD_FAILED) {
- spin_unlock_irqrestore(&brd->bd_lock, flags);
- continue;
- }
-
- /* Schedule a poll helper task */
- tasklet_schedule(&brd->helper_tasklet);
-
- spin_unlock_irqrestore(&brd->bd_lock, flags);
- }
-
- /*
- * Schedule ourself back at the nominal wakeup interval.
- */
- spin_lock_irqsave(&dgnc_poll_lock, flags);
- dgnc_poll_time += dgnc_jiffies_from_ms(dgnc_poll_tick);
-
- new_time = dgnc_poll_time - jiffies;
-
- if ((ulong) new_time >= 2 * dgnc_poll_tick)
- dgnc_poll_time = jiffies + dgnc_jiffies_from_ms(dgnc_poll_tick);
-
- init_timer(&dgnc_poll_timer);
- dgnc_poll_timer.function = dgnc_poll_handler;
- dgnc_poll_timer.data = 0;
- dgnc_poll_timer.expires = dgnc_poll_time;
- spin_unlock_irqrestore(&dgnc_poll_lock, flags);
-
- if (!dgnc_poll_stop)
- add_timer(&dgnc_poll_timer);
-}
-
-/*
- * dgnc_init_globals()
- *
- * This is where we initialize the globals from the static insmod
- * configuration variables. These are declared near the head of
- * this file.
- */
-static void dgnc_init_globals(void)
-{
- int i = 0;
-
- dgnc_rawreadok = rawreadok;
- dgnc_trcbuf_size = trcbuf_size;
- dgnc_debug = debug;
- dgnc_NumBoards = 0;
-
- for (i = 0; i < MAXBOARDS; i++)
- dgnc_Board[i] = NULL;
-
- init_timer(&dgnc_poll_timer);
-}
-
diff --git a/drivers/staging/dgnc/dgnc_driver.h b/drivers/staging/dgnc/dgnc_driver.h
deleted file mode 100644
index f901957c..0000000
--- a/drivers/staging/dgnc/dgnc_driver.h
+++ /dev/null
@@ -1,465 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- *************************************************************************
- *
- * Driver includes
- *
- *************************************************************************/
-
-#ifndef __DGNC_DRIVER_H
-#define __DGNC_DRIVER_H
-
-#include <linux/types.h> /* To pick up the varions Linux types */
-#include <linux/tty.h> /* To pick up the various tty structs/defines */
-#include <linux/interrupt.h> /* For irqreturn_t type */
-
-#include "dgnc_types.h" /* Additional types needed by the Digi header files */
-#include "digi.h" /* Digi specific ioctl header */
-#include "dgnc_kcompat.h" /* Kernel 2.4/2.6 compat includes */
-#include "dgnc_sysfs.h" /* Support for SYSFS */
-
-/*************************************************************************
- *
- * Driver defines
- *
- *************************************************************************/
-
-/*
- * Driver identification, error and debugging statments
- *
- * In theory, you can change all occurrences of "digi" in the next
- * three lines, and the driver printk's will all automagically change.
- *
- * APR((fmt, args, ...)); Always prints message
- */
-#define PROCSTR "dgnc" /* /proc entries */
-#define DEVSTR "/dev/dg/dgnc" /* /dev entries */
-#define DRVSTR "dgnc" /* Driver name string
- * displayed by APR */
-#define APR(args) do { printk(DRVSTR": "); printk args; \
- } while (0)
-#define RAPR(args) do { printk args; } while (0)
-
-#define TRC_TO_CONSOLE 1
-
-/*
- * Debugging levels can be set using debug insmod variable
- * They can also be compiled out completely.
- */
-
-#define DBG_INIT (dgnc_debug & 0x01)
-#define DBG_BASIC (dgnc_debug & 0x02)
-#define DBG_CORE (dgnc_debug & 0x04)
-
-#define DBG_OPEN (dgnc_debug & 0x08)
-#define DBG_CLOSE (dgnc_debug & 0x10)
-#define DBG_READ (dgnc_debug & 0x20)
-#define DBG_WRITE (dgnc_debug & 0x40)
-
-#define DBG_IOCTL (dgnc_debug & 0x80)
-
-#define DBG_PROC (dgnc_debug & 0x100)
-#define DBG_PARAM (dgnc_debug & 0x200)
-#define DBG_PSCAN (dgnc_debug & 0x400)
-#define DBG_EVENT (dgnc_debug & 0x800)
-
-#define DBG_DRAIN (dgnc_debug & 0x1000)
-#define DBG_MSIGS (dgnc_debug & 0x2000)
-
-#define DBG_MGMT (dgnc_debug & 0x4000)
-#define DBG_INTR (dgnc_debug & 0x8000)
-
-#define DBG_CARR (dgnc_debug & 0x10000)
-
-/* Number of boards we support at once. */
-#define MAXBOARDS 20
-#define MAXPORTS 8
-#define MAXTTYNAMELEN 200
-
-/* Our 3 magic numbers for our board, channel and unit structs */
-#define DGNC_BOARD_MAGIC 0x5c6df104
-#define DGNC_CHANNEL_MAGIC 0x6c6df104
-#define DGNC_UNIT_MAGIC 0x7c6df104
-
-/* Serial port types */
-#define DGNC_SERIAL 0
-#define DGNC_PRINT 1
-
-#define SERIAL_TYPE_NORMAL 1
-
-#define PORT_NUM(dev) ((dev) & 0x7f)
-#define IS_PRINT(dev) (((dev) & 0xff) >= 0x80)
-
-/* MAX number of stop characters we will send when our read queue is getting full */
-#define MAX_STOPS_SENT 5
-
-/* 4 extra for alignment play space */
-#define WRITEBUFLEN ((4096) + 4)
-#define MYFLIPLEN N_TTY_BUF_SIZE
-
-#define dgnc_jiffies_from_ms(a) (((a) * HZ) / 1000)
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially. This is the same structure that is defined
- * as the default in tty_io.c with the same settings overriden as in serial.c
- *
- * In short, this should match the internal serial ports' defaults.
- */
-#define DEFAULT_IFLAGS (ICRNL | IXON)
-#define DEFAULT_OFLAGS (OPOST | ONLCR)
-#define DEFAULT_CFLAGS (B9600 | CS8 | CREAD | HUPCL | CLOCAL)
-#define DEFAULT_LFLAGS (ISIG | ICANON | ECHO | ECHOE | ECHOK | \
- ECHOCTL | ECHOKE | IEXTEN)
-
-#ifndef _POSIX_VDISABLE
-#define _POSIX_VDISABLE '\0'
-#endif
-
-#define SNIFF_MAX 65536 /* Sniff buffer size (2^n) */
-#define SNIFF_MASK (SNIFF_MAX - 1) /* Sniff wrap mask */
-
-/*
- * All the possible states the driver can be while being loaded.
- */
-enum {
- DRIVER_INITIALIZED = 0,
- DRIVER_READY
-};
-
-/*
- * All the possible states the board can be while booting up.
- */
-enum {
- BOARD_FAILED = 0,
- BOARD_FOUND,
- BOARD_READY
-};
-
-
-/*************************************************************************
- *
- * Structures and closely related defines.
- *
- *************************************************************************/
-
-struct dgnc_board;
-struct channel_t;
-
-/************************************************************************
- * Per board operations structure *
- ************************************************************************/
-struct board_ops {
- void (*tasklet)(unsigned long data);
- irqreturn_t (*intr)(int irq, void *voidbrd);
- void (*uart_init)(struct channel_t *ch);
- void (*uart_off)(struct channel_t *ch);
- int (*drain)(struct tty_struct *tty, uint seconds);
- void (*param)(struct tty_struct *tty);
- void (*vpd)(struct dgnc_board *brd);
- void (*assert_modem_signals)(struct channel_t *ch);
- void (*flush_uart_write)(struct channel_t *ch);
- void (*flush_uart_read)(struct channel_t *ch);
- void (*disable_receiver)(struct channel_t *ch);
- void (*enable_receiver)(struct channel_t *ch);
- void (*send_break)(struct channel_t *ch, int);
- void (*send_start_character)(struct channel_t *ch);
- void (*send_stop_character)(struct channel_t *ch);
- void (*copy_data_from_queue_to_uart)(struct channel_t *ch);
- uint (*get_uart_bytes_left)(struct channel_t *ch);
- void (*send_immediate_char)(struct channel_t *ch, unsigned char);
-};
-
-/************************************************************************
- * Device flag definitions for bd_flags.
- ************************************************************************/
-#define BD_IS_PCI_EXPRESS 0x0001 /* Is a PCI Express board */
-
-
-/*
- * Per-board information
- */
-struct dgnc_board {
- int magic; /* Board Magic number. */
- int boardnum; /* Board number: 0-32 */
-
- int type; /* Type of board */
- char *name; /* Product Name */
- struct pci_dev *pdev; /* Pointer to the pci_dev struct */
- unsigned long bd_flags; /* Board flags */
- u16 vendor; /* PCI vendor ID */
- u16 device; /* PCI device ID */
- u16 subvendor; /* PCI subsystem vendor ID */
- u16 subdevice; /* PCI subsystem device ID */
- unsigned char rev; /* PCI revision ID */
- uint pci_bus; /* PCI bus value */
- uint pci_slot; /* PCI slot value */
- uint maxports; /* MAX ports this board can handle */
- unsigned char dvid; /* Board specific device id */
- unsigned char vpd[128]; /* VPD of board, if found */
- unsigned char serial_num[20]; /* Serial number of board, if found in VPD */
-
- spinlock_t bd_lock; /* Used to protect board */
-
- spinlock_t bd_intr_lock; /* Used to protect the poller tasklet and
- * the interrupt routine from each other.
- */
-
- uint state; /* State of card. */
- wait_queue_head_t state_wait; /* Place to sleep on for state change */
-
- struct tasklet_struct helper_tasklet; /* Poll helper tasklet */
-
- uint nasync; /* Number of ports on card */
-
- uint irq; /* Interrupt request number */
- ulong intr_count; /* Count of interrupts */
- ulong intr_modem; /* Count of interrupts */
- ulong intr_tx; /* Count of interrupts */
- ulong intr_rx; /* Count of interrupts */
-
- ulong membase; /* Start of base memory of the card */
- ulong membase_end; /* End of base memory of the card */
-
- u8 __iomem *re_map_membase;/* Remapped memory of the card */
-
- ulong iobase; /* Start of io base of the card */
- ulong iobase_end; /* End of io base of the card */
-
- uint bd_uart_offset; /* Space between each UART */
-
- struct channel_t *channels[MAXPORTS]; /* array of pointers to our channels. */
-
- struct tty_driver SerialDriver;
- char SerialName[200];
- struct tty_driver PrintDriver;
- char PrintName[200];
-
- uint dgnc_Major_Serial_Registered;
- uint dgnc_Major_TransparentPrint_Registered;
-
- uint dgnc_Serial_Major;
- uint dgnc_TransparentPrint_Major;
-
- uint TtyRefCnt;
-
- char *flipbuf; /* Our flip buffer, alloced if board is found */
-
- u16 dpatype; /* The board "type", as defined by DPA */
- u16 dpastatus; /* The board "status", as defined by DPA */
-
- /*
- * Mgmt data.
- */
- char *msgbuf_head;
- char *msgbuf;
-
- uint bd_dividend; /* Board/UARTs specific dividend */
-
- struct board_ops *bd_ops;
-
- /* /proc/<board> entries */
- struct proc_dir_entry *proc_entry_pointer;
- struct dgnc_proc_entry *dgnc_board_table;
-
-};
-
-
-/************************************************************************
- * Unit flag definitions for un_flags.
- ************************************************************************/
-#define UN_ISOPEN 0x0001 /* Device is open */
-#define UN_CLOSING 0x0002 /* Line is being closed */
-#define UN_IMM 0x0004 /* Service immediately */
-#define UN_BUSY 0x0008 /* Some work this channel */
-#define UN_BREAKI 0x0010 /* Input break received */
-#define UN_PWAIT 0x0020 /* Printer waiting for terminal */
-#define UN_TIME 0x0040 /* Waiting on time */
-#define UN_EMPTY 0x0080 /* Waiting output queue empty */
-#define UN_LOW 0x0100 /* Waiting output low water mark*/
-#define UN_EXCL_OPEN 0x0200 /* Open for exclusive use */
-#define UN_WOPEN 0x0400 /* Device waiting for open */
-#define UN_WIOCTL 0x0800 /* Device waiting for open */
-#define UN_HANGUP 0x8000 /* Carrier lost */
-
-struct device;
-
-/************************************************************************
- * Structure for terminal or printer unit.
- ************************************************************************/
-struct un_t {
- int magic; /* Unit Magic Number. */
- struct channel_t *un_ch;
- ulong un_time;
- uint un_type;
- uint un_open_count; /* Counter of opens to port */
- struct tty_struct *un_tty;/* Pointer to unit tty structure */
- uint un_flags; /* Unit flags */
- wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
- uint un_dev; /* Minor device number */
- struct device *un_sysfs;
-};
-
-
-/************************************************************************
- * Device flag definitions for ch_flags.
- ************************************************************************/
-#define CH_PRON 0x0001 /* Printer on string */
-#define CH_STOP 0x0002 /* Output is stopped */
-#define CH_STOPI 0x0004 /* Input is stopped */
-#define CH_CD 0x0008 /* Carrier is present */
-#define CH_FCAR 0x0010 /* Carrier forced on */
-#define CH_HANGUP 0x0020 /* Hangup received */
-
-#define CH_RECEIVER_OFF 0x0040 /* Receiver is off */
-#define CH_OPENING 0x0080 /* Port in fragile open state */
-#define CH_CLOSING 0x0100 /* Port in fragile close state */
-#define CH_FIFO_ENABLED 0x0200 /* Port has FIFOs enabled */
-#define CH_TX_FIFO_EMPTY 0x0400 /* TX Fifo is completely empty */
-#define CH_TX_FIFO_LWM 0x0800 /* TX Fifo is below Low Water */
-#define CH_BREAK_SENDING 0x1000 /* Break is being sent */
-#define CH_LOOPBACK 0x2000 /* Channel is in lookback mode */
-#define CH_FLIPBUF_IN_USE 0x4000 /* Channel's flipbuf is in use */
-#define CH_BAUD0 0x08000 /* Used for checking B0 transitions */
-#define CH_FORCED_STOP 0x20000 /* Output is forcibly stopped */
-#define CH_FORCED_STOPI 0x40000 /* Input is forcibly stopped */
-
-/*
- * Definitions for ch_sniff_flags
- */
-#define SNIFF_OPEN 0x1
-#define SNIFF_WAIT_DATA 0x2
-#define SNIFF_WAIT_SPACE 0x4
-
-
-/* Our Read/Error/Write queue sizes */
-#define RQUEUEMASK 0x1FFF /* 8 K - 1 */
-#define EQUEUEMASK 0x1FFF /* 8 K - 1 */
-#define WQUEUEMASK 0x0FFF /* 4 K - 1 */
-#define RQUEUESIZE (RQUEUEMASK + 1)
-#define EQUEUESIZE RQUEUESIZE
-#define WQUEUESIZE (WQUEUEMASK + 1)
-
-
-/************************************************************************
- * Channel information structure.
- ************************************************************************/
-struct channel_t {
- int magic; /* Channel Magic Number */
- struct dgnc_board *ch_bd; /* Board structure pointer */
- struct digi_t ch_digi; /* Transparent Print structure */
- struct un_t ch_tun; /* Terminal unit info */
- struct un_t ch_pun; /* Printer unit info */
-
- spinlock_t ch_lock; /* provide for serialization */
- wait_queue_head_t ch_flags_wait;
-
- uint ch_portnum; /* Port number, 0 offset. */
- uint ch_open_count; /* open count */
- uint ch_flags; /* Channel flags */
-
- ulong ch_close_delay; /* How long we should drop RTS/DTR for */
-
- ulong ch_cpstime; /* Time for CPS calculations */
-
- tcflag_t ch_c_iflag; /* channel iflags */
- tcflag_t ch_c_cflag; /* channel cflags */
- tcflag_t ch_c_oflag; /* channel oflags */
- tcflag_t ch_c_lflag; /* channel lflags */
- unsigned char ch_stopc; /* Stop character */
- unsigned char ch_startc; /* Start character */
-
- uint ch_old_baud; /* Cache of the current baud */
- uint ch_custom_speed;/* Custom baud, if set */
-
- uint ch_wopen; /* Waiting for open process cnt */
-
- unsigned char ch_mostat; /* FEP output modem status */
- unsigned char ch_mistat; /* FEP input modem status */
-
- struct neo_uart_struct __iomem *ch_neo_uart; /* Pointer to the "mapped" UART struct */
- struct cls_uart_struct __iomem *ch_cls_uart; /* Pointer to the "mapped" UART struct */
-
- unsigned char ch_cached_lsr; /* Cached value of the LSR register */
-
- unsigned char *ch_rqueue; /* Our read queue buffer - malloc'ed */
- ushort ch_r_head; /* Head location of the read queue */
- ushort ch_r_tail; /* Tail location of the read queue */
-
- unsigned char *ch_equeue; /* Our error queue buffer - malloc'ed */
- ushort ch_e_head; /* Head location of the error queue */
- ushort ch_e_tail; /* Tail location of the error queue */
-
- unsigned char *ch_wqueue; /* Our write queue buffer - malloc'ed */
- ushort ch_w_head; /* Head location of the write queue */
- ushort ch_w_tail; /* Tail location of the write queue */
-
- ulong ch_rxcount; /* total of data received so far */
- ulong ch_txcount; /* total of data transmitted so far */
-
- unsigned char ch_r_tlevel; /* Receive Trigger level */
- unsigned char ch_t_tlevel; /* Transmit Trigger level */
-
- unsigned char ch_r_watermark; /* Receive Watermark */
-
- ulong ch_stop_sending_break; /* Time we should STOP sending a break */
-
- uint ch_stops_sent; /* How many times I have sent a stop character
- * to try to stop the other guy sending.
- */
- ulong ch_err_parity; /* Count of parity errors on channel */
- ulong ch_err_frame; /* Count of framing errors on channel */
- ulong ch_err_break; /* Count of breaks on channel */
- ulong ch_err_overrun; /* Count of overruns on channel */
-
- ulong ch_xon_sends; /* Count of xons transmitted */
- ulong ch_xoff_sends; /* Count of xoffs transmitted */
-
- ulong ch_intr_modem; /* Count of interrupts */
- ulong ch_intr_tx; /* Count of interrupts */
- ulong ch_intr_rx; /* Count of interrupts */
-
-
- /* /proc/<board>/<channel> entries */
- struct proc_dir_entry *proc_entry_pointer;
- struct dgnc_proc_entry *dgnc_channel_table;
-
- uint ch_sniff_in;
- uint ch_sniff_out;
- char *ch_sniff_buf; /* Sniff buffer for proc */
- ulong ch_sniff_flags; /* Channel flags */
- wait_queue_head_t ch_sniff_wait;
-};
-
-/*
- * Our Global Variables.
- */
-extern uint dgnc_Major; /* Our driver/mgmt major */
-extern int dgnc_debug; /* Debug variable */
-extern int dgnc_rawreadok; /* Set if user wants rawreads */
-extern int dgnc_poll_tick; /* Poll interval - 20 ms */
-extern int dgnc_trcbuf_size; /* Size of the ringbuffer */
-extern spinlock_t dgnc_global_lock; /* Driver global spinlock */
-extern uint dgnc_NumBoards; /* Total number of boards */
-extern struct dgnc_board *dgnc_Board[MAXBOARDS]; /* Array of board structs */
-extern char *dgnc_state_text[]; /* Array of state text */
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_kcompat.h b/drivers/staging/dgnc/dgnc_kcompat.h
deleted file mode 100644
index eaec7e6..0000000
--- a/drivers/staging/dgnc/dgnc_kcompat.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright 2004 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- *************************************************************************
- *
- * This file is intended to contain all the kernel "differences" between the
- * various kernels that we support.
- *
- *************************************************************************/
-
-#ifndef __DGNC_KCOMPAT_H
-#define __DGNC_KCOMPAT_H
-
-#if !defined(TTY_FLIPBUF_SIZE)
-# define TTY_FLIPBUF_SIZE 512
-#endif
-
-
-/* Sparse stuff */
-# ifndef __user
-# define __user
-# define __kernel
-# define __safe
-# define __force
-# define __chk_user_ptr(x) (void)0
-# endif
-
-
-# define PARM_STR(VAR, INIT, PERM, DESC) \
- static char *VAR = INIT; \
- char *dgnc_##VAR; \
- module_param(VAR, charp, PERM); \
- MODULE_PARM_DESC(VAR, DESC);
-
-# define PARM_INT(VAR, INIT, PERM, DESC) \
- static int VAR = INIT; \
- int dgnc_##VAR; \
- module_param(VAR, int, PERM); \
- MODULE_PARM_DESC(VAR, DESC);
-
-# define PARM_ULONG(VAR, INIT, PERM, DESC) \
- static ulong VAR = INIT; \
- ulong dgnc_##VAR; \
- module_param(VAR, long, PERM); \
- MODULE_PARM_DESC(VAR, DESC);
-
-#endif /* ! __DGNC_KCOMPAT_H */
diff --git a/drivers/staging/dgnc/dgnc_mgmt.c b/drivers/staging/dgnc/dgnc_mgmt.c
deleted file mode 100644
index 5544a8e..0000000
--- a/drivers/staging/dgnc/dgnc_mgmt.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- *
- */
-
-/************************************************************************
- *
- * This file implements the mgmt functionality for the
- * Neo and ClassicBoard based product lines.
- *
- ************************************************************************
- */
-#include <linux/kernel.h>
-#include <linux/ctype.h>
-#include <linux/sched.h> /* For jiffies, task states */
-#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
-#include <linux/serial_reg.h>
-#include <linux/termios.h>
-#include <linux/uaccess.h> /* For copy_from_user/copy_to_user */
-
-#include "dgnc_driver.h"
-#include "dgnc_pci.h"
-#include "dgnc_kcompat.h" /* Kernel 2.4/2.6 compat includes */
-#include "dgnc_mgmt.h"
-#include "dpacompat.h"
-
-
-/* Our "in use" variables, to enforce 1 open only */
-static int dgnc_mgmt_in_use[MAXMGMTDEVICES];
-
-
-/*
- * dgnc_mgmt_open()
- *
- * Open the mgmt/downld/dpa device
- */
-int dgnc_mgmt_open(struct inode *inode, struct file *file)
-{
- unsigned long flags;
- unsigned int minor = iminor(inode);
-
- spin_lock_irqsave(&dgnc_global_lock, flags);
-
- /* mgmt device */
- if (minor < MAXMGMTDEVICES) {
- /* Only allow 1 open at a time on mgmt device */
- if (dgnc_mgmt_in_use[minor]) {
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
- return -EBUSY;
- }
- dgnc_mgmt_in_use[minor]++;
- } else {
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
- return -ENXIO;
- }
-
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
-
- return 0;
-}
-
-
-/*
- * dgnc_mgmt_close()
- *
- * Open the mgmt/dpa device
- */
-int dgnc_mgmt_close(struct inode *inode, struct file *file)
-{
- unsigned long flags;
- unsigned int minor = iminor(inode);
-
- spin_lock_irqsave(&dgnc_global_lock, flags);
-
- /* mgmt device */
- if (minor < MAXMGMTDEVICES) {
- if (dgnc_mgmt_in_use[minor])
- dgnc_mgmt_in_use[minor] = 0;
- }
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
-
- return 0;
-}
-
-
-/*
- * dgnc_mgmt_ioctl()
- *
- * ioctl the mgmt/dpa device
- */
-
-long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- unsigned long flags;
- void __user *uarg = (void __user *) arg;
-
- switch (cmd) {
-
- case DIGI_GETDD:
- {
- /*
- * This returns the total number of boards
- * in the system, as well as driver version
- * and has space for a reserved entry
- */
- struct digi_dinfo ddi;
-
- spin_lock_irqsave(&dgnc_global_lock, flags);
-
- ddi.dinfo_nboards = dgnc_NumBoards;
- sprintf(ddi.dinfo_version, "%s", DG_PART);
-
- spin_unlock_irqrestore(&dgnc_global_lock, flags);
-
- if (copy_to_user(uarg, &ddi, sizeof(ddi)))
- return -EFAULT;
-
- break;
- }
-
- case DIGI_GETBD:
- {
- int brd;
-
- struct digi_info di;
-
- if (copy_from_user(&brd, uarg, sizeof(int)))
- return -EFAULT;
-
- if ((brd < 0) || (brd > dgnc_NumBoards) ||
- (dgnc_NumBoards == 0))
- return -ENODEV;
-
- memset(&di, 0, sizeof(di));
-
- di.info_bdnum = brd;
-
- spin_lock_irqsave(&dgnc_Board[brd]->bd_lock, flags);
-
- di.info_bdtype = dgnc_Board[brd]->dpatype;
- di.info_bdstate = dgnc_Board[brd]->dpastatus;
- di.info_ioport = 0;
- di.info_physaddr = (ulong) dgnc_Board[brd]->membase;
- di.info_physsize = (ulong) dgnc_Board[brd]->membase - dgnc_Board[brd]->membase_end;
- if (dgnc_Board[brd]->state != BOARD_FAILED)
- di.info_nports = dgnc_Board[brd]->nasync;
- else
- di.info_nports = 0;
-
- spin_unlock_irqrestore(&dgnc_Board[brd]->bd_lock, flags);
-
- if (copy_to_user(uarg, &di, sizeof(di)))
- return -EFAULT;
-
- break;
- }
-
- case DIGI_GET_NI_INFO:
- {
- struct channel_t *ch;
- struct ni_info ni;
- unsigned char mstat = 0;
- uint board = 0;
- uint channel = 0;
-
- if (copy_from_user(&ni, uarg, sizeof(ni)))
- return -EFAULT;
-
- board = ni.board;
- channel = ni.channel;
-
- /* Verify boundaries on board */
- if ((board > dgnc_NumBoards) || (dgnc_NumBoards == 0))
- return -ENODEV;
-
- /* Verify boundaries on channel */
- if ((channel < 0) || (channel > dgnc_Board[board]->nasync))
- return -ENODEV;
-
- ch = dgnc_Board[board]->channels[channel];
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENODEV;
-
- memset(&ni, 0, sizeof(ni));
- ni.board = board;
- ni.channel = channel;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- mstat = (ch->ch_mostat | ch->ch_mistat);
-
- if (mstat & UART_MCR_DTR) {
- ni.mstat |= TIOCM_DTR;
- ni.dtr = TIOCM_DTR;
- }
- if (mstat & UART_MCR_RTS) {
- ni.mstat |= TIOCM_RTS;
- ni.rts = TIOCM_RTS;
- }
- if (mstat & UART_MSR_CTS) {
- ni.mstat |= TIOCM_CTS;
- ni.cts = TIOCM_CTS;
- }
- if (mstat & UART_MSR_RI) {
- ni.mstat |= TIOCM_RI;
- ni.ri = TIOCM_RI;
- }
- if (mstat & UART_MSR_DCD) {
- ni.mstat |= TIOCM_CD;
- ni.dcd = TIOCM_CD;
- }
- if (mstat & UART_MSR_DSR)
- ni.mstat |= TIOCM_DSR;
-
- ni.iflag = ch->ch_c_iflag;
- ni.oflag = ch->ch_c_oflag;
- ni.cflag = ch->ch_c_cflag;
- ni.lflag = ch->ch_c_lflag;
-
- if (ch->ch_digi.digi_flags & CTSPACE ||
- ch->ch_c_cflag & CRTSCTS)
- ni.hflow = 1;
- else
- ni.hflow = 0;
-
- if ((ch->ch_flags & CH_STOPI) ||
- (ch->ch_flags & CH_FORCED_STOPI))
- ni.recv_stopped = 1;
- else
- ni.recv_stopped = 0;
-
- if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_FORCED_STOP))
- ni.xmit_stopped = 1;
- else
- ni.xmit_stopped = 0;
-
- ni.curtx = ch->ch_txcount;
- ni.currx = ch->ch_rxcount;
-
- ni.baud = ch->ch_old_baud;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (copy_to_user(uarg, &ni, sizeof(ni)))
- return -EFAULT;
-
- break;
- }
-
-
- }
-
- return 0;
-}
diff --git a/drivers/staging/dgnc/dgnc_mgmt.h b/drivers/staging/dgnc/dgnc_mgmt.h
deleted file mode 100644
index 567f687..0000000
--- a/drivers/staging/dgnc/dgnc_mgmt.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-#ifndef __DGNC_MGMT_H
-#define __DGNC_MGMT_H
-
-#define MAXMGMTDEVICES 8
-
-int dgnc_mgmt_open(struct inode *inode, struct file *file);
-int dgnc_mgmt_close(struct inode *inode, struct file *file);
-long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-#endif
-
diff --git a/drivers/staging/dgnc/dgnc_neo.c b/drivers/staging/dgnc/dgnc_neo.c
deleted file mode 100644
index a5bd08f..0000000
--- a/drivers/staging/dgnc/dgnc_neo.c
+++ /dev/null
@@ -1,1878 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- *
- */
-
-
-#include <linux/kernel.h>
-#include <linux/sched.h> /* For jiffies, task states */
-#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
-#include <linux/delay.h> /* For udelay */
-#include <linux/io.h> /* For read[bwl]/write[bwl] */
-#include <linux/serial.h> /* For struct async_serial */
-#include <linux/serial_reg.h> /* For the various UART offsets */
-
-#include "dgnc_driver.h" /* Driver main header file */
-#include "dgnc_neo.h" /* Our header file */
-#include "dgnc_tty.h"
-
-static inline void neo_parse_lsr(struct dgnc_board *brd, uint port);
-static inline void neo_parse_isr(struct dgnc_board *brd, uint port);
-static void neo_copy_data_from_uart_to_queue(struct channel_t *ch);
-static inline void neo_clear_break(struct channel_t *ch, int force);
-static inline void neo_set_cts_flow_control(struct channel_t *ch);
-static inline void neo_set_rts_flow_control(struct channel_t *ch);
-static inline void neo_set_ixon_flow_control(struct channel_t *ch);
-static inline void neo_set_ixoff_flow_control(struct channel_t *ch);
-static inline void neo_set_no_output_flow_control(struct channel_t *ch);
-static inline void neo_set_no_input_flow_control(struct channel_t *ch);
-static inline void neo_set_new_start_stop_chars(struct channel_t *ch);
-static void neo_parse_modem(struct channel_t *ch, unsigned char signals);
-static void neo_tasklet(unsigned long data);
-static void neo_vpd(struct dgnc_board *brd);
-static void neo_uart_init(struct channel_t *ch);
-static void neo_uart_off(struct channel_t *ch);
-static int neo_drain(struct tty_struct *tty, uint seconds);
-static void neo_param(struct tty_struct *tty);
-static void neo_assert_modem_signals(struct channel_t *ch);
-static void neo_flush_uart_write(struct channel_t *ch);
-static void neo_flush_uart_read(struct channel_t *ch);
-static void neo_disable_receiver(struct channel_t *ch);
-static void neo_enable_receiver(struct channel_t *ch);
-static void neo_send_break(struct channel_t *ch, int msecs);
-static void neo_send_start_character(struct channel_t *ch);
-static void neo_send_stop_character(struct channel_t *ch);
-static void neo_copy_data_from_queue_to_uart(struct channel_t *ch);
-static uint neo_get_uart_bytes_left(struct channel_t *ch);
-static void neo_send_immediate_char(struct channel_t *ch, unsigned char c);
-static irqreturn_t neo_intr(int irq, void *voidbrd);
-
-
-struct board_ops dgnc_neo_ops = {
- .tasklet = neo_tasklet,
- .intr = neo_intr,
- .uart_init = neo_uart_init,
- .uart_off = neo_uart_off,
- .drain = neo_drain,
- .param = neo_param,
- .vpd = neo_vpd,
- .assert_modem_signals = neo_assert_modem_signals,
- .flush_uart_write = neo_flush_uart_write,
- .flush_uart_read = neo_flush_uart_read,
- .disable_receiver = neo_disable_receiver,
- .enable_receiver = neo_enable_receiver,
- .send_break = neo_send_break,
- .send_start_character = neo_send_start_character,
- .send_stop_character = neo_send_stop_character,
- .copy_data_from_queue_to_uart = neo_copy_data_from_queue_to_uart,
- .get_uart_bytes_left = neo_get_uart_bytes_left,
- .send_immediate_char = neo_send_immediate_char
-};
-
-static uint dgnc_offset_table[8] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 };
-
-
-/*
- * This function allows calls to ensure that all outstanding
- * PCI writes have been completed, by doing a PCI read against
- * a non-destructive, read-only location on the Neo card.
- *
- * In this case, we are reading the DVID (Read-only Device Identification)
- * value of the Neo card.
- */
-static inline void neo_pci_posting_flush(struct dgnc_board *bd)
-{
- readb(bd->re_map_membase + 0x8D);
-}
-
-static inline void neo_set_cts_flow_control(struct channel_t *ch)
-{
- unsigned char ier = readb(&ch->ch_neo_uart->ier);
- unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
-
- /* Turn on auto CTS flow control */
-#if 1
- ier |= (UART_17158_IER_CTSDSR);
-#else
- ier &= ~(UART_17158_IER_CTSDSR);
-#endif
-
- efr |= (UART_17158_EFR_ECB | UART_17158_EFR_CTSDSR);
-
- /* Turn off auto Xon flow control */
- efr &= ~(UART_17158_EFR_IXON);
-
- /* Why? Becuz Exar's spec says we have to zero it out before setting it */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Turn on UART enhanced bits */
- writeb(efr, &ch->ch_neo_uart->efr);
-
- /* Turn on table D, with 8 char hi/low watermarks */
- writeb((UART_17158_FCTR_TRGD | UART_17158_FCTR_RTS_4DELAY), &ch->ch_neo_uart->fctr);
-
- /* Feed the UART our trigger levels */
- writeb(8, &ch->ch_neo_uart->tfifo);
- ch->ch_t_tlevel = 8;
-
- writeb(ier, &ch->ch_neo_uart->ier);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static inline void neo_set_rts_flow_control(struct channel_t *ch)
-{
- unsigned char ier = readb(&ch->ch_neo_uart->ier);
- unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
- /* Turn on auto RTS flow control */
-#if 1
- ier |= (UART_17158_IER_RTSDTR);
-#else
- ier &= ~(UART_17158_IER_RTSDTR);
-#endif
- efr |= (UART_17158_EFR_ECB | UART_17158_EFR_RTSDTR);
-
- /* Turn off auto Xoff flow control */
- ier &= ~(UART_17158_IER_XOFF);
- efr &= ~(UART_17158_EFR_IXOFF);
-
- /* Why? Becuz Exar's spec says we have to zero it out before setting it */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Turn on UART enhanced bits */
- writeb(efr, &ch->ch_neo_uart->efr);
-
- writeb((UART_17158_FCTR_TRGD | UART_17158_FCTR_RTS_4DELAY), &ch->ch_neo_uart->fctr);
- ch->ch_r_watermark = 4;
-
- writeb(32, &ch->ch_neo_uart->rfifo);
- ch->ch_r_tlevel = 32;
-
- writeb(ier, &ch->ch_neo_uart->ier);
-
- /*
- * From the Neo UART spec sheet:
- * The auto RTS/DTR function must be started by asserting
- * RTS/DTR# output pin (MCR bit-0 or 1 to logic 1 after
- * it is enabled.
- */
- ch->ch_mostat |= (UART_MCR_RTS);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static inline void neo_set_ixon_flow_control(struct channel_t *ch)
-{
- unsigned char ier = readb(&ch->ch_neo_uart->ier);
- unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
- /* Turn off auto CTS flow control */
- ier &= ~(UART_17158_IER_CTSDSR);
- efr &= ~(UART_17158_EFR_CTSDSR);
-
- /* Turn on auto Xon flow control */
- efr |= (UART_17158_EFR_ECB | UART_17158_EFR_IXON);
-
- /* Why? Becuz Exar's spec says we have to zero it out before setting it */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Turn on UART enhanced bits */
- writeb(efr, &ch->ch_neo_uart->efr);
-
- writeb((UART_17158_FCTR_TRGD | UART_17158_FCTR_RTS_8DELAY), &ch->ch_neo_uart->fctr);
- ch->ch_r_watermark = 4;
-
- writeb(32, &ch->ch_neo_uart->rfifo);
- ch->ch_r_tlevel = 32;
-
- /* Tell UART what start/stop chars it should be looking for */
- writeb(ch->ch_startc, &ch->ch_neo_uart->xonchar1);
- writeb(0, &ch->ch_neo_uart->xonchar2);
-
- writeb(ch->ch_stopc, &ch->ch_neo_uart->xoffchar1);
- writeb(0, &ch->ch_neo_uart->xoffchar2);
-
- writeb(ier, &ch->ch_neo_uart->ier);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static inline void neo_set_ixoff_flow_control(struct channel_t *ch)
-{
- unsigned char ier = readb(&ch->ch_neo_uart->ier);
- unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
- /* Turn off auto RTS flow control */
- ier &= ~(UART_17158_IER_RTSDTR);
- efr &= ~(UART_17158_EFR_RTSDTR);
-
- /* Turn on auto Xoff flow control */
- ier |= (UART_17158_IER_XOFF);
- efr |= (UART_17158_EFR_ECB | UART_17158_EFR_IXOFF);
-
- /* Why? Becuz Exar's spec says we have to zero it out before setting it */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Turn on UART enhanced bits */
- writeb(efr, &ch->ch_neo_uart->efr);
-
- /* Turn on table D, with 8 char hi/low watermarks */
- writeb((UART_17158_FCTR_TRGD | UART_17158_FCTR_RTS_8DELAY), &ch->ch_neo_uart->fctr);
-
- writeb(8, &ch->ch_neo_uart->tfifo);
- ch->ch_t_tlevel = 8;
-
- /* Tell UART what start/stop chars it should be looking for */
- writeb(ch->ch_startc, &ch->ch_neo_uart->xonchar1);
- writeb(0, &ch->ch_neo_uart->xonchar2);
-
- writeb(ch->ch_stopc, &ch->ch_neo_uart->xoffchar1);
- writeb(0, &ch->ch_neo_uart->xoffchar2);
-
- writeb(ier, &ch->ch_neo_uart->ier);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static inline void neo_set_no_input_flow_control(struct channel_t *ch)
-{
- unsigned char ier = readb(&ch->ch_neo_uart->ier);
- unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
- /* Turn off auto RTS flow control */
- ier &= ~(UART_17158_IER_RTSDTR);
- efr &= ~(UART_17158_EFR_RTSDTR);
-
- /* Turn off auto Xoff flow control */
- ier &= ~(UART_17158_IER_XOFF);
- if (ch->ch_c_iflag & IXON)
- efr &= ~(UART_17158_EFR_IXOFF);
- else
- efr &= ~(UART_17158_EFR_ECB | UART_17158_EFR_IXOFF);
-
-
- /* Why? Becuz Exar's spec says we have to zero it out before setting it */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Turn on UART enhanced bits */
- writeb(efr, &ch->ch_neo_uart->efr);
-
- /* Turn on table D, with 8 char hi/low watermarks */
- writeb((UART_17158_FCTR_TRGD | UART_17158_FCTR_RTS_8DELAY), &ch->ch_neo_uart->fctr);
-
- ch->ch_r_watermark = 0;
-
- writeb(16, &ch->ch_neo_uart->tfifo);
- ch->ch_t_tlevel = 16;
-
- writeb(16, &ch->ch_neo_uart->rfifo);
- ch->ch_r_tlevel = 16;
-
- writeb(ier, &ch->ch_neo_uart->ier);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static inline void neo_set_no_output_flow_control(struct channel_t *ch)
-{
- unsigned char ier = readb(&ch->ch_neo_uart->ier);
- unsigned char efr = readb(&ch->ch_neo_uart->efr);
-
- /* Turn off auto CTS flow control */
- ier &= ~(UART_17158_IER_CTSDSR);
- efr &= ~(UART_17158_EFR_CTSDSR);
-
- /* Turn off auto Xon flow control */
- if (ch->ch_c_iflag & IXOFF)
- efr &= ~(UART_17158_EFR_IXON);
- else
- efr &= ~(UART_17158_EFR_ECB | UART_17158_EFR_IXON);
-
- /* Why? Becuz Exar's spec says we have to zero it out before setting it */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Turn on UART enhanced bits */
- writeb(efr, &ch->ch_neo_uart->efr);
-
- /* Turn on table D, with 8 char hi/low watermarks */
- writeb((UART_17158_FCTR_TRGD | UART_17158_FCTR_RTS_8DELAY), &ch->ch_neo_uart->fctr);
-
- ch->ch_r_watermark = 0;
-
- writeb(16, &ch->ch_neo_uart->tfifo);
- ch->ch_t_tlevel = 16;
-
- writeb(16, &ch->ch_neo_uart->rfifo);
- ch->ch_r_tlevel = 16;
-
- writeb(ier, &ch->ch_neo_uart->ier);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-/* change UARTs start/stop chars */
-static inline void neo_set_new_start_stop_chars(struct channel_t *ch)
-{
-
- /* if hardware flow control is set, then skip this whole thing */
- if (ch->ch_digi.digi_flags & (CTSPACE | RTSPACE) || ch->ch_c_cflag & CRTSCTS)
- return;
-
- /* Tell UART what start/stop chars it should be looking for */
- writeb(ch->ch_startc, &ch->ch_neo_uart->xonchar1);
- writeb(0, &ch->ch_neo_uart->xonchar2);
-
- writeb(ch->ch_stopc, &ch->ch_neo_uart->xoffchar1);
- writeb(0, &ch->ch_neo_uart->xoffchar2);
-
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-/*
- * No locks are assumed to be held when calling this function.
- */
-static inline void neo_clear_break(struct channel_t *ch, int force)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* Bail if we aren't currently sending a break. */
- if (!ch->ch_stop_sending_break) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /* Turn break off, and unset some variables */
- if (ch->ch_flags & CH_BREAK_SENDING) {
- if (time_after_eq(jiffies, ch->ch_stop_sending_break)
- || force) {
- unsigned char temp = readb(&ch->ch_neo_uart->lcr);
-
- writeb((temp & ~UART_LCR_SBC), &ch->ch_neo_uart->lcr);
- neo_pci_posting_flush(ch->ch_bd);
- ch->ch_flags &= ~(CH_BREAK_SENDING);
- ch->ch_stop_sending_break = 0;
- }
- }
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/*
- * Parse the ISR register.
- */
-static inline void neo_parse_isr(struct dgnc_board *brd, uint port)
-{
- struct channel_t *ch;
- unsigned char isr;
- unsigned char cause;
- unsigned long flags;
-
- if (!brd || brd->magic != DGNC_BOARD_MAGIC)
- return;
-
- if (port > brd->maxports)
- return;
-
- ch = brd->channels[port];
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- /* Here we try to figure out what caused the interrupt to happen */
- while (1) {
-
- isr = readb(&ch->ch_neo_uart->isr_fcr);
-
- /* Bail if no pending interrupt */
- if (isr & UART_IIR_NO_INT)
- break;
-
- /*
- * Yank off the upper 2 bits, which just show that the FIFO's are enabled.
- */
- isr &= ~(UART_17158_IIR_FIFO_ENABLED);
-
- if (isr & (UART_17158_IIR_RDI_TIMEOUT | UART_IIR_RDI)) {
- /* Read data from uart -> queue */
- brd->intr_rx++;
- ch->ch_intr_rx++;
- neo_copy_data_from_uart_to_queue(ch);
-
- /* Call our tty layer to enforce queue flow control if needed. */
- spin_lock_irqsave(&ch->ch_lock, flags);
- dgnc_check_queue_flow_control(ch);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- }
-
- if (isr & UART_IIR_THRI) {
- brd->intr_tx++;
- ch->ch_intr_tx++;
- /* Transfer data (if any) from Write Queue -> UART. */
- spin_lock_irqsave(&ch->ch_lock, flags);
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- neo_copy_data_from_queue_to_uart(ch);
- }
-
- if (isr & UART_17158_IIR_XONXOFF) {
- cause = readb(&ch->ch_neo_uart->xoffchar1);
-
- /*
- * Since the UART detected either an XON or
- * XOFF match, we need to figure out which
- * one it was, so we can suspend or resume data flow.
- */
- if (cause == UART_17158_XON_DETECT) {
- /* Is output stopped right now, if so, resume it */
- if (brd->channels[port]->ch_flags & CH_STOP) {
- spin_lock_irqsave(&ch->ch_lock,
- flags);
- ch->ch_flags &= ~(CH_STOP);
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- }
- } else if (cause == UART_17158_XOFF_DETECT) {
- if (!(brd->channels[port]->ch_flags & CH_STOP)) {
- spin_lock_irqsave(&ch->ch_lock,
- flags);
- ch->ch_flags |= CH_STOP;
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- }
- }
- }
-
- if (isr & UART_17158_IIR_HWFLOW_STATE_CHANGE) {
- /*
- * If we get here, this means the hardware is doing auto flow control.
- * Check to see whether RTS/DTR or CTS/DSR caused this interrupt.
- */
- brd->intr_modem++;
- ch->ch_intr_modem++;
- cause = readb(&ch->ch_neo_uart->mcr);
- /* Which pin is doing auto flow? RTS or DTR? */
- if ((cause & 0x4) == 0) {
- if (cause & UART_MCR_RTS) {
- spin_lock_irqsave(&ch->ch_lock,
- flags);
- ch->ch_mostat |= UART_MCR_RTS;
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- } else {
- spin_lock_irqsave(&ch->ch_lock,
- flags);
- ch->ch_mostat &= ~(UART_MCR_RTS);
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- }
- } else {
- if (cause & UART_MCR_DTR) {
- spin_lock_irqsave(&ch->ch_lock,
- flags);
- ch->ch_mostat |= UART_MCR_DTR;
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- } else {
- spin_lock_irqsave(&ch->ch_lock,
- flags);
- ch->ch_mostat &= ~(UART_MCR_DTR);
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- }
- }
- }
-
- /* Parse any modem signal changes */
- neo_parse_modem(ch, readb(&ch->ch_neo_uart->msr));
- }
-}
-
-
-static inline void neo_parse_lsr(struct dgnc_board *brd, uint port)
-{
- struct channel_t *ch;
- int linestatus;
- unsigned long flags;
-
- if (!brd)
- return;
-
- if (brd->magic != DGNC_BOARD_MAGIC)
- return;
-
- if (port > brd->maxports)
- return;
-
- ch = brd->channels[port];
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- linestatus = readb(&ch->ch_neo_uart->lsr);
-
- ch->ch_cached_lsr |= linestatus;
-
- if (ch->ch_cached_lsr & UART_LSR_DR) {
- brd->intr_rx++;
- ch->ch_intr_rx++;
- /* Read data from uart -> queue */
- neo_copy_data_from_uart_to_queue(ch);
- spin_lock_irqsave(&ch->ch_lock, flags);
- dgnc_check_queue_flow_control(ch);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- }
-
- /*
- * The next 3 tests should *NOT* happen, as the above test
- * should encapsulate all 3... At least, thats what Exar says.
- */
-
- if (linestatus & UART_LSR_PE)
- ch->ch_err_parity++;
-
- if (linestatus & UART_LSR_FE)
- ch->ch_err_frame++;
-
- if (linestatus & UART_LSR_BI)
- ch->ch_err_break++;
-
- if (linestatus & UART_LSR_OE) {
- /*
- * Rx Oruns. Exar says that an orun will NOT corrupt
- * the FIFO. It will just replace the holding register
- * with this new data byte. So basically just ignore this.
- * Probably we should eventually have an orun stat in our driver...
- */
- ch->ch_err_overrun++;
- }
-
- if (linestatus & UART_LSR_THRE) {
- brd->intr_tx++;
- ch->ch_intr_tx++;
- spin_lock_irqsave(&ch->ch_lock, flags);
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /* Transfer data (if any) from Write Queue -> UART. */
- neo_copy_data_from_queue_to_uart(ch);
- } else if (linestatus & UART_17158_TX_AND_FIFO_CLR) {
- brd->intr_tx++;
- ch->ch_intr_tx++;
- spin_lock_irqsave(&ch->ch_lock, flags);
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /* Transfer data (if any) from Write Queue -> UART. */
- neo_copy_data_from_queue_to_uart(ch);
- }
-}
-
-
-/*
- * neo_param()
- * Send any/all changes to the line to the UART.
- */
-static void neo_param(struct tty_struct *tty)
-{
- unsigned char lcr = 0;
- unsigned char uart_lcr = 0;
- unsigned char ier = 0;
- unsigned char uart_ier = 0;
- uint baud = 9600;
- int quot = 0;
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = (struct un_t *) tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- /*
- * If baud rate is zero, flush queues, and set mval to drop DTR.
- */
- if ((ch->ch_c_cflag & (CBAUD)) == 0) {
- ch->ch_r_head = 0;
- ch->ch_r_tail = 0;
- ch->ch_e_head = 0;
- ch->ch_e_tail = 0;
- ch->ch_w_head = 0;
- ch->ch_w_tail = 0;
-
- neo_flush_uart_write(ch);
- neo_flush_uart_read(ch);
-
- /* The baudrate is B0 so all modem lines are to be dropped. */
- ch->ch_flags |= (CH_BAUD0);
- ch->ch_mostat &= ~(UART_MCR_RTS | UART_MCR_DTR);
- neo_assert_modem_signals(ch);
- ch->ch_old_baud = 0;
- return;
-
- } else if (ch->ch_custom_speed) {
-
- baud = ch->ch_custom_speed;
- /* Handle transition from B0 */
- if (ch->ch_flags & CH_BAUD0) {
- ch->ch_flags &= ~(CH_BAUD0);
-
- /*
- * Bring back up RTS and DTR...
- * Also handle RTS or DTR toggle if set.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat |= (UART_MCR_RTS);
- if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat |= (UART_MCR_DTR);
- }
- } else {
- int iindex = 0;
- int jindex = 0;
-
- ulong bauds[4][16] = {
- { /* slowbaud */
- 0, 50, 75, 110,
- 134, 150, 200, 300,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* slowbaud & CBAUDEX */
- 0, 57600, 115200, 230400,
- 460800, 150, 200, 921600,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* fastbaud */
- 0, 57600, 76800, 115200,
- 131657, 153600, 230400, 460800,
- 921600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 },
- { /* fastbaud & CBAUDEX */
- 0, 57600, 115200, 230400,
- 460800, 150, 200, 921600,
- 600, 1200, 1800, 2400,
- 4800, 9600, 19200, 38400 }
- };
-
- /* Only use the TXPrint baud rate if the terminal unit is NOT open */
- if (!(ch->ch_tun.un_flags & UN_ISOPEN) && (un->un_type == DGNC_PRINT))
- baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
- else
- baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
-
- if (ch->ch_c_cflag & CBAUDEX)
- iindex = 1;
-
- if (ch->ch_digi.digi_flags & DIGI_FAST)
- iindex += 2;
-
- jindex = baud;
-
- if ((iindex >= 0) && (iindex < 4) && (jindex >= 0) && (jindex < 16))
- baud = bauds[iindex][jindex];
- else
- baud = 0;
-
- if (baud == 0)
- baud = 9600;
-
- /* Handle transition from B0 */
- if (ch->ch_flags & CH_BAUD0) {
- ch->ch_flags &= ~(CH_BAUD0);
-
- /*
- * Bring back up RTS and DTR...
- * Also handle RTS or DTR toggle if set.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat |= (UART_MCR_RTS);
- if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat |= (UART_MCR_DTR);
- }
- }
-
- if (ch->ch_c_cflag & PARENB)
- lcr |= UART_LCR_PARITY;
-
- if (!(ch->ch_c_cflag & PARODD))
- lcr |= UART_LCR_EPAR;
-
- /*
- * Not all platforms support mark/space parity,
- * so this will hide behind an ifdef.
- */
-#ifdef CMSPAR
- if (ch->ch_c_cflag & CMSPAR)
- lcr |= UART_LCR_SPAR;
-#endif
-
- if (ch->ch_c_cflag & CSTOPB)
- lcr |= UART_LCR_STOP;
-
- switch (ch->ch_c_cflag & CSIZE) {
- case CS5:
- lcr |= UART_LCR_WLEN5;
- break;
- case CS6:
- lcr |= UART_LCR_WLEN6;
- break;
- case CS7:
- lcr |= UART_LCR_WLEN7;
- break;
- case CS8:
- default:
- lcr |= UART_LCR_WLEN8;
- break;
- }
-
- uart_ier = readb(&ch->ch_neo_uart->ier);
- ier = uart_ier;
-
- uart_lcr = readb(&ch->ch_neo_uart->lcr);
-
- if (baud == 0)
- baud = 9600;
-
- quot = ch->ch_bd->bd_dividend / baud;
-
- if (quot != 0 && ch->ch_old_baud != baud) {
- ch->ch_old_baud = baud;
- writeb(UART_LCR_DLAB, &ch->ch_neo_uart->lcr);
- writeb((quot & 0xff), &ch->ch_neo_uart->txrx);
- writeb((quot >> 8), &ch->ch_neo_uart->ier);
- writeb(lcr, &ch->ch_neo_uart->lcr);
- }
-
- if (uart_lcr != lcr)
- writeb(lcr, &ch->ch_neo_uart->lcr);
-
- if (ch->ch_c_cflag & CREAD)
- ier |= (UART_IER_RDI | UART_IER_RLSI);
- else
- ier &= ~(UART_IER_RDI | UART_IER_RLSI);
-
- /*
- * Have the UART interrupt on modem signal changes ONLY when
- * we are in hardware flow control mode, or CLOCAL/FORCEDCD is not set.
- */
- if ((ch->ch_digi.digi_flags & CTSPACE) ||
- (ch->ch_digi.digi_flags & RTSPACE) ||
- (ch->ch_c_cflag & CRTSCTS) ||
- !(ch->ch_digi.digi_flags & DIGI_FORCEDCD) ||
- !(ch->ch_c_cflag & CLOCAL))
- ier |= UART_IER_MSI;
- else
- ier &= ~UART_IER_MSI;
-
- ier |= UART_IER_THRI;
-
- if (ier != uart_ier)
- writeb(ier, &ch->ch_neo_uart->ier);
-
- /* Set new start/stop chars */
- neo_set_new_start_stop_chars(ch);
-
- if (ch->ch_digi.digi_flags & CTSPACE || ch->ch_c_cflag & CRTSCTS) {
- neo_set_cts_flow_control(ch);
- } else if (ch->ch_c_iflag & IXON) {
- /* If start/stop is set to disable, then we should disable flow control */
- if ((ch->ch_startc == _POSIX_VDISABLE) || (ch->ch_stopc == _POSIX_VDISABLE))
- neo_set_no_output_flow_control(ch);
- else
- neo_set_ixon_flow_control(ch);
- } else {
- neo_set_no_output_flow_control(ch);
- }
-
- if (ch->ch_digi.digi_flags & RTSPACE || ch->ch_c_cflag & CRTSCTS) {
- neo_set_rts_flow_control(ch);
- } else if (ch->ch_c_iflag & IXOFF) {
- /* If start/stop is set to disable, then we should disable flow control */
- if ((ch->ch_startc == _POSIX_VDISABLE) || (ch->ch_stopc == _POSIX_VDISABLE))
- neo_set_no_input_flow_control(ch);
- else
- neo_set_ixoff_flow_control(ch);
- } else {
- neo_set_no_input_flow_control(ch);
- }
-
- /*
- * Adjust the RX FIFO Trigger level if baud is less than 9600.
- * Not exactly elegant, but this is needed because of the Exar chip's
- * delay on firing off the RX FIFO interrupt on slower baud rates.
- */
- if (baud < 9600) {
- writeb(1, &ch->ch_neo_uart->rfifo);
- ch->ch_r_tlevel = 1;
- }
-
- neo_assert_modem_signals(ch);
-
- /* Get current status of the modem signals now */
- neo_parse_modem(ch, readb(&ch->ch_neo_uart->msr));
-}
-
-
-/*
- * Our board poller function.
- */
-static void neo_tasklet(unsigned long data)
-{
- struct dgnc_board *bd = (struct dgnc_board *) data;
- struct channel_t *ch;
- unsigned long flags;
- int i;
- int state = 0;
- int ports = 0;
-
- if (!bd || bd->magic != DGNC_BOARD_MAGIC) {
- APR(("poll_tasklet() - NULL or bad bd.\n"));
- return;
- }
-
- /* Cache a couple board values */
- spin_lock_irqsave(&bd->bd_lock, flags);
- state = bd->state;
- ports = bd->nasync;
- spin_unlock_irqrestore(&bd->bd_lock, flags);
-
- /*
- * Do NOT allow the interrupt routine to read the intr registers
- * Until we release this lock.
- */
- spin_lock_irqsave(&bd->bd_intr_lock, flags);
-
- /*
- * If board is ready, parse deeper to see if there is anything to do.
- */
- if ((state == BOARD_READY) && (ports > 0)) {
- /* Loop on each port */
- for (i = 0; i < ports; i++) {
- ch = bd->channels[i];
-
- /* Just being careful... */
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- continue;
-
- /*
- * NOTE: Remember you CANNOT hold any channel
- * locks when calling the input routine.
- *
- * During input processing, its possible we
- * will call the Linux ld, which might in turn,
- * do a callback right back into us, resulting
- * in us trying to grab the channel lock twice!
- */
- dgnc_input(ch);
-
- /*
- * Channel lock is grabbed and then released
- * inside both of these routines, but neither
- * call anything else that could call back into us.
- */
- neo_copy_data_from_queue_to_uart(ch);
- dgnc_wakeup_writes(ch);
-
- /*
- * Call carrier carrier function, in case something
- * has changed.
- */
- dgnc_carrier(ch);
-
- /*
- * Check to see if we need to turn off a sending break.
- * The timing check is done inside clear_break()
- */
- if (ch->ch_stop_sending_break)
- neo_clear_break(ch, 0);
- }
- }
-
- /* Allow interrupt routine to access the interrupt register again */
- spin_unlock_irqrestore(&bd->bd_intr_lock, flags);
-
-}
-
-
-/*
- * dgnc_neo_intr()
- *
- * Neo specific interrupt handler.
- */
-static irqreturn_t neo_intr(int irq, void *voidbrd)
-{
- struct dgnc_board *brd = (struct dgnc_board *) voidbrd;
- struct channel_t *ch;
- int port = 0;
- int type = 0;
- int current_port;
- u32 tmp;
- u32 uart_poll;
- unsigned long flags;
- unsigned long flags2;
-
- if (!brd) {
- APR(("Received interrupt (%d) with null board associated\n", irq));
- return IRQ_NONE;
- }
-
- /*
- * Check to make sure its for us.
- */
- if (brd->magic != DGNC_BOARD_MAGIC) {
- APR(("Received interrupt (%d) with a board pointer that wasn't ours!\n", irq));
- return IRQ_NONE;
- }
-
- brd->intr_count++;
-
- /* Lock out the slow poller from running on this board. */
- spin_lock_irqsave(&brd->bd_intr_lock, flags);
-
- /*
- * Read in "extended" IRQ information from the 32bit Neo register.
- * Bits 0-7: What port triggered the interrupt.
- * Bits 8-31: Each 3bits indicate what type of interrupt occurred.
- */
- uart_poll = readl(brd->re_map_membase + UART_17158_POLL_ADDR_OFFSET);
-
- /*
- * If 0, no interrupts pending.
- * This can happen if the IRQ is shared among a couple Neo/Classic boards.
- */
- if (!uart_poll) {
- spin_unlock_irqrestore(&brd->bd_intr_lock, flags);
- return IRQ_NONE;
- }
-
- /* At this point, we have at least SOMETHING to service, dig further... */
-
- current_port = 0;
-
- /* Loop on each port */
- while ((uart_poll & 0xff) != 0) {
-
- tmp = uart_poll;
-
- /* Check current port to see if it has interrupt pending */
- if ((tmp & dgnc_offset_table[current_port]) != 0) {
- port = current_port;
- type = tmp >> (8 + (port * 3));
- type &= 0x7;
- } else {
- current_port++;
- continue;
- }
-
- /* Remove this port + type from uart_poll */
- uart_poll &= ~(dgnc_offset_table[port]);
-
- if (!type) {
- /* If no type, just ignore it, and move onto next port */
- continue;
- }
-
- /* Switch on type of interrupt we have */
- switch (type) {
-
- case UART_17158_RXRDY_TIMEOUT:
- /*
- * RXRDY Time-out is cleared by reading data in the
- * RX FIFO until it falls below the trigger level.
- */
-
- /* Verify the port is in range. */
- if (port > brd->nasync)
- continue;
-
- ch = brd->channels[port];
- neo_copy_data_from_uart_to_queue(ch);
-
- /* Call our tty layer to enforce queue flow control if needed. */
- spin_lock_irqsave(&ch->ch_lock, flags2);
- dgnc_check_queue_flow_control(ch);
- spin_unlock_irqrestore(&ch->ch_lock, flags2);
-
- continue;
-
- case UART_17158_RX_LINE_STATUS:
- /*
- * RXRDY and RX LINE Status (logic OR of LSR[4:1])
- */
- neo_parse_lsr(brd, port);
- continue;
-
- case UART_17158_TXRDY:
- /*
- * TXRDY interrupt clears after reading ISR register for the UART channel.
- */
-
- /*
- * Yes, this is odd...
- * Why would I check EVERY possibility of type of
- * interrupt, when we know its TXRDY???
- * Becuz for some reason, even tho we got triggered for TXRDY,
- * it seems to be occasionally wrong. Instead of TX, which
- * it should be, I was getting things like RXDY too. Weird.
- */
- neo_parse_isr(brd, port);
- continue;
-
- case UART_17158_MSR:
- /*
- * MSR or flow control was seen.
- */
- neo_parse_isr(brd, port);
- continue;
-
- default:
- /*
- * The UART triggered us with a bogus interrupt type.
- * It appears the Exar chip, when REALLY bogged down, will throw
- * these once and awhile.
- * Its harmless, just ignore it and move on.
- */
- continue;
- }
- }
-
- /*
- * Schedule tasklet to more in-depth servicing at a better time.
- */
- tasklet_schedule(&brd->helper_tasklet);
-
- spin_unlock_irqrestore(&brd->bd_intr_lock, flags);
-
- return IRQ_HANDLED;
-}
-
-
-/*
- * Neo specific way of turning off the receiver.
- * Used as a way to enforce queue flow control when in
- * hardware flow control mode.
- */
-static void neo_disable_receiver(struct channel_t *ch)
-{
- unsigned char tmp = readb(&ch->ch_neo_uart->ier);
-
- tmp &= ~(UART_IER_RDI);
- writeb(tmp, &ch->ch_neo_uart->ier);
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-/*
- * Neo specific way of turning on the receiver.
- * Used as a way to un-enforce queue flow control when in
- * hardware flow control mode.
- */
-static void neo_enable_receiver(struct channel_t *ch)
-{
- unsigned char tmp = readb(&ch->ch_neo_uart->ier);
-
- tmp |= (UART_IER_RDI);
- writeb(tmp, &ch->ch_neo_uart->ier);
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static void neo_copy_data_from_uart_to_queue(struct channel_t *ch)
-{
- int qleft = 0;
- unsigned char linestatus = 0;
- unsigned char error_mask = 0;
- int n = 0;
- int total = 0;
- ushort head;
- ushort tail;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* cache head and tail of queue */
- head = ch->ch_r_head & RQUEUEMASK;
- tail = ch->ch_r_tail & RQUEUEMASK;
-
- /* Get our cached LSR */
- linestatus = ch->ch_cached_lsr;
- ch->ch_cached_lsr = 0;
-
- /* Store how much space we have left in the queue */
- qleft = tail - head - 1;
- if (qleft < 0)
- qleft += RQUEUEMASK + 1;
-
- /*
- * If the UART is not in FIFO mode, force the FIFO copy to
- * NOT be run, by setting total to 0.
- *
- * On the other hand, if the UART IS in FIFO mode, then ask
- * the UART to give us an approximation of data it has RX'ed.
- */
- if (!(ch->ch_flags & CH_FIFO_ENABLED))
- total = 0;
- else {
- total = readb(&ch->ch_neo_uart->rfifo);
-
- /*
- * EXAR chip bug - RX FIFO COUNT - Fudge factor.
- *
- * This resolves a problem/bug with the Exar chip that sometimes
- * returns a bogus value in the rfifo register.
- * The count can be any where from 0-3 bytes "off".
- * Bizarre, but true.
- */
- if ((ch->ch_bd->dvid & 0xf0) >= UART_XR17E158_DVID)
- total -= 1;
- else
- total -= 3;
- }
-
-
- /*
- * Finally, bound the copy to make sure we don't overflow
- * our own queue...
- * The byte by byte copy loop below this loop this will
- * deal with the queue overflow possibility.
- */
- total = min(total, qleft);
-
- while (total > 0) {
-
- /*
- * Grab the linestatus register, we need to check
- * to see if there are any errors in the FIFO.
- */
- linestatus = readb(&ch->ch_neo_uart->lsr);
-
- /*
- * Break out if there is a FIFO error somewhere.
- * This will allow us to go byte by byte down below,
- * finding the exact location of the error.
- */
- if (linestatus & UART_17158_RX_FIFO_DATA_ERROR)
- break;
-
- /* Make sure we don't go over the end of our queue */
- n = min(((uint) total), (RQUEUESIZE - (uint) head));
-
- /*
- * Cut down n even further if needed, this is to fix
- * a problem with memcpy_fromio() with the Neo on the
- * IBM pSeries platform.
- * 15 bytes max appears to be the magic number.
- */
- n = min((uint) n, (uint) 12);
-
- /*
- * Since we are grabbing the linestatus register, which
- * will reset some bits after our read, we need to ensure
- * we don't miss our TX FIFO emptys.
- */
- if (linestatus & (UART_LSR_THRE | UART_17158_TX_AND_FIFO_CLR))
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-
- linestatus = 0;
-
- /* Copy data from uart to the queue */
- memcpy_fromio(ch->ch_rqueue + head, &ch->ch_neo_uart->txrxburst, n);
- dgnc_sniff_nowait_nolock(ch, "UART READ", ch->ch_rqueue + head, n);
-
- /*
- * Since RX_FIFO_DATA_ERROR was 0, we are guarenteed
- * that all the data currently in the FIFO is free of
- * breaks and parity/frame/orun errors.
- */
- memset(ch->ch_equeue + head, 0, n);
-
- /* Add to and flip head if needed */
- head = (head + n) & RQUEUEMASK;
- total -= n;
- qleft -= n;
- ch->ch_rxcount += n;
- }
-
- /*
- * Create a mask to determine whether we should
- * insert the character (if any) into our queue.
- */
- if (ch->ch_c_iflag & IGNBRK)
- error_mask |= UART_LSR_BI;
-
- /*
- * Now cleanup any leftover bytes still in the UART.
- * Also deal with any possible queue overflow here as well.
- */
- while (1) {
-
- /*
- * Its possible we have a linestatus from the loop above
- * this, so we "OR" on any extra bits.
- */
- linestatus |= readb(&ch->ch_neo_uart->lsr);
-
- /*
- * If the chip tells us there is no more data pending to
- * be read, we can then leave.
- * But before we do, cache the linestatus, just in case.
- */
- if (!(linestatus & UART_LSR_DR)) {
- ch->ch_cached_lsr = linestatus;
- break;
- }
-
- /* No need to store this bit */
- linestatus &= ~UART_LSR_DR;
-
- /*
- * Since we are grabbing the linestatus register, which
- * will reset some bits after our read, we need to ensure
- * we don't miss our TX FIFO emptys.
- */
- if (linestatus & (UART_LSR_THRE | UART_17158_TX_AND_FIFO_CLR)) {
- linestatus &= ~(UART_LSR_THRE | UART_17158_TX_AND_FIFO_CLR);
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- }
-
- /*
- * Discard character if we are ignoring the error mask.
- */
- if (linestatus & error_mask) {
- unsigned char discard;
-
- linestatus = 0;
- memcpy_fromio(&discard, &ch->ch_neo_uart->txrxburst, 1);
- continue;
- }
-
- /*
- * If our queue is full, we have no choice but to drop some data.
- * The assumption is that HWFLOW or SWFLOW should have stopped
- * things way way before we got to this point.
- *
- * I decided that I wanted to ditch the oldest data first,
- * I hope thats okay with everyone? Yes? Good.
- */
- while (qleft < 1) {
- tail = (tail + 1) & RQUEUEMASK;
- ch->ch_r_tail = tail;
- ch->ch_err_overrun++;
- qleft++;
- }
-
- memcpy_fromio(ch->ch_rqueue + head, &ch->ch_neo_uart->txrxburst, 1);
- ch->ch_equeue[head] = (unsigned char) linestatus;
- dgnc_sniff_nowait_nolock(ch, "UART READ", ch->ch_rqueue + head, 1);
-
- /* Ditch any remaining linestatus value. */
- linestatus = 0;
-
- /* Add to and flip head if needed */
- head = (head + 1) & RQUEUEMASK;
-
- qleft--;
- ch->ch_rxcount++;
- }
-
- /*
- * Write new final heads to channel structure.
- */
- ch->ch_r_head = head & RQUEUEMASK;
- ch->ch_e_head = head & EQUEUEMASK;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/*
- * This function basically goes to sleep for secs, or until
- * it gets signalled that the port has fully drained.
- */
-static int neo_drain(struct tty_struct *tty, uint seconds)
-{
- unsigned long flags;
- struct channel_t *ch;
- struct un_t *un;
- int rc = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -ENXIO;
-
- un = (struct un_t *) tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return -ENXIO;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENXIO;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- un->un_flags |= UN_EMPTY;
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /*
- * Go to sleep waiting for the tty layer to wake me back up when
- * the empty flag goes away.
- *
- * NOTE: TODO: Do something with time passed in.
- */
- rc = wait_event_interruptible(un->un_flags_wait, ((un->un_flags & UN_EMPTY) == 0));
-
- /* If ret is non-zero, user ctrl-c'ed us */
- return rc;
-}
-
-
-/*
- * Flush the WRITE FIFO on the Neo.
- *
- * NOTE: Channel lock MUST be held before calling this function!
- */
-static void neo_flush_uart_write(struct channel_t *ch)
-{
- unsigned char tmp = 0;
- int i = 0;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- writeb((UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_XMIT), &ch->ch_neo_uart->isr_fcr);
- neo_pci_posting_flush(ch->ch_bd);
-
- for (i = 0; i < 10; i++) {
-
- /* Check to see if the UART feels it completely flushed the FIFO. */
- tmp = readb(&ch->ch_neo_uart->isr_fcr);
- if (tmp & 4)
- udelay(10);
- else
- break;
- }
-
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
-}
-
-
-/*
- * Flush the READ FIFO on the Neo.
- *
- * NOTE: Channel lock MUST be held before calling this function!
- */
-static void neo_flush_uart_read(struct channel_t *ch)
-{
- unsigned char tmp = 0;
- int i = 0;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- writeb((UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR), &ch->ch_neo_uart->isr_fcr);
- neo_pci_posting_flush(ch->ch_bd);
-
- for (i = 0; i < 10; i++) {
-
- /* Check to see if the UART feels it completely flushed the FIFO. */
- tmp = readb(&ch->ch_neo_uart->isr_fcr);
- if (tmp & 2)
- udelay(10);
- else
- break;
- }
-}
-
-
-static void neo_copy_data_from_queue_to_uart(struct channel_t *ch)
-{
- ushort head;
- ushort tail;
- int n;
- int s;
- int qlen;
- uint len_written = 0;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* No data to write to the UART */
- if (ch->ch_w_tail == ch->ch_w_head) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /* If port is "stopped", don't send any data to the UART */
- if ((ch->ch_flags & CH_FORCED_STOP) || (ch->ch_flags & CH_BREAK_SENDING)) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /*
- * If FIFOs are disabled. Send data directly to txrx register
- */
- if (!(ch->ch_flags & CH_FIFO_ENABLED)) {
- unsigned char lsrbits = readb(&ch->ch_neo_uart->lsr);
-
- /* Cache the LSR bits for later parsing */
- ch->ch_cached_lsr |= lsrbits;
- if (ch->ch_cached_lsr & UART_LSR_THRE) {
- ch->ch_cached_lsr &= ~(UART_LSR_THRE);
-
- /*
- * If RTS Toggle mode is on, turn on RTS now if not already set,
- * and make sure we get an event when the data transfer has completed.
- */
- if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
- if (!(ch->ch_mostat & UART_MCR_RTS)) {
- ch->ch_mostat |= (UART_MCR_RTS);
- neo_assert_modem_signals(ch);
- }
- ch->ch_tun.un_flags |= (UN_EMPTY);
- }
- /*
- * If DTR Toggle mode is on, turn on DTR now if not already set,
- * and make sure we get an event when the data transfer has completed.
- */
- if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
- if (!(ch->ch_mostat & UART_MCR_DTR)) {
- ch->ch_mostat |= (UART_MCR_DTR);
- neo_assert_modem_signals(ch);
- }
- ch->ch_tun.un_flags |= (UN_EMPTY);
- }
-
- writeb(ch->ch_wqueue[ch->ch_w_tail], &ch->ch_neo_uart->txrx);
- ch->ch_w_tail++;
- ch->ch_w_tail &= WQUEUEMASK;
- ch->ch_txcount++;
- }
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /*
- * We have to do it this way, because of the EXAR TXFIFO count bug.
- */
- if ((ch->ch_bd->dvid & 0xf0) < UART_XR17E158_DVID) {
- if (!(ch->ch_flags & (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM))) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- len_written = 0;
-
- n = readb(&ch->ch_neo_uart->tfifo);
-
- if ((unsigned int) n > ch->ch_t_tlevel) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- n = UART_17158_TX_FIFOSIZE - ch->ch_t_tlevel;
- } else {
- n = UART_17158_TX_FIFOSIZE - readb(&ch->ch_neo_uart->tfifo);
- }
-
- /* cache head and tail of queue */
- head = ch->ch_w_head & WQUEUEMASK;
- tail = ch->ch_w_tail & WQUEUEMASK;
- qlen = (head - tail) & WQUEUEMASK;
-
- /* Find minimum of the FIFO space, versus queue length */
- n = min(n, qlen);
-
- while (n > 0) {
-
- s = ((head >= tail) ? head : WQUEUESIZE) - tail;
- s = min(s, n);
-
- if (s <= 0)
- break;
-
- /*
- * If RTS Toggle mode is on, turn on RTS now if not already set,
- * and make sure we get an event when the data transfer has completed.
- */
- if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
- if (!(ch->ch_mostat & UART_MCR_RTS)) {
- ch->ch_mostat |= (UART_MCR_RTS);
- neo_assert_modem_signals(ch);
- }
- ch->ch_tun.un_flags |= (UN_EMPTY);
- }
-
- /*
- * If DTR Toggle mode is on, turn on DTR now if not already set,
- * and make sure we get an event when the data transfer has completed.
- */
- if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
- if (!(ch->ch_mostat & UART_MCR_DTR)) {
- ch->ch_mostat |= (UART_MCR_DTR);
- neo_assert_modem_signals(ch);
- }
- ch->ch_tun.un_flags |= (UN_EMPTY);
- }
-
- memcpy_toio(&ch->ch_neo_uart->txrxburst, ch->ch_wqueue + tail, s);
- dgnc_sniff_nowait_nolock(ch, "UART WRITE", ch->ch_wqueue + tail, s);
-
- /* Add and flip queue if needed */
- tail = (tail + s) & WQUEUEMASK;
- n -= s;
- ch->ch_txcount += s;
- len_written += s;
- }
-
- /* Update the final tail */
- ch->ch_w_tail = tail & WQUEUEMASK;
-
- if (len_written > 0) {
- neo_pci_posting_flush(ch->ch_bd);
- ch->ch_flags &= ~(CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- }
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-static void neo_parse_modem(struct channel_t *ch, unsigned char signals)
-{
- unsigned char msignals = signals;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- /*
- * Do altpin switching. Altpin switches DCD and DSR.
- * This prolly breaks DSRPACE, so we should be more clever here.
- */
- if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
- unsigned char mswap = msignals;
-
- if (mswap & UART_MSR_DDCD) {
- msignals &= ~UART_MSR_DDCD;
- msignals |= UART_MSR_DDSR;
- }
- if (mswap & UART_MSR_DDSR) {
- msignals &= ~UART_MSR_DDSR;
- msignals |= UART_MSR_DDCD;
- }
- if (mswap & UART_MSR_DCD) {
- msignals &= ~UART_MSR_DCD;
- msignals |= UART_MSR_DSR;
- }
- if (mswap & UART_MSR_DSR) {
- msignals &= ~UART_MSR_DSR;
- msignals |= UART_MSR_DCD;
- }
- }
-
- /* Scrub off lower bits. They signify delta's, which I don't care about */
- msignals &= 0xf0;
-
- if (msignals & UART_MSR_DCD)
- ch->ch_mistat |= UART_MSR_DCD;
- else
- ch->ch_mistat &= ~UART_MSR_DCD;
-
- if (msignals & UART_MSR_DSR)
- ch->ch_mistat |= UART_MSR_DSR;
- else
- ch->ch_mistat &= ~UART_MSR_DSR;
-
- if (msignals & UART_MSR_RI)
- ch->ch_mistat |= UART_MSR_RI;
- else
- ch->ch_mistat &= ~UART_MSR_RI;
-
- if (msignals & UART_MSR_CTS)
- ch->ch_mistat |= UART_MSR_CTS;
- else
- ch->ch_mistat &= ~UART_MSR_CTS;
-}
-
-
-/* Make the UART raise any of the output signals we want up */
-static void neo_assert_modem_signals(struct channel_t *ch)
-{
- unsigned char out;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- out = ch->ch_mostat;
-
- if (ch->ch_flags & CH_LOOPBACK)
- out |= UART_MCR_LOOP;
-
- writeb(out, &ch->ch_neo_uart->mcr);
- neo_pci_posting_flush(ch->ch_bd);
-
- /* Give time for the UART to actually raise/drop the signals */
- udelay(10);
-}
-
-
-static void neo_send_start_character(struct channel_t *ch)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- if (ch->ch_startc != _POSIX_VDISABLE) {
- ch->ch_xon_sends++;
- writeb(ch->ch_startc, &ch->ch_neo_uart->txrx);
- neo_pci_posting_flush(ch->ch_bd);
- udelay(10);
- }
-}
-
-
-static void neo_send_stop_character(struct channel_t *ch)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- if (ch->ch_stopc != _POSIX_VDISABLE) {
- ch->ch_xoff_sends++;
- writeb(ch->ch_stopc, &ch->ch_neo_uart->txrx);
- neo_pci_posting_flush(ch->ch_bd);
- udelay(10);
- }
-}
-
-
-/*
- * neo_uart_init
- */
-static void neo_uart_init(struct channel_t *ch)
-{
-
- writeb(0, &ch->ch_neo_uart->ier);
- writeb(0, &ch->ch_neo_uart->efr);
- writeb(UART_EFR_ECB, &ch->ch_neo_uart->efr);
-
-
- /* Clear out UART and FIFO */
- readb(&ch->ch_neo_uart->txrx);
- writeb((UART_FCR_ENABLE_FIFO|UART_FCR_CLEAR_RCVR|UART_FCR_CLEAR_XMIT), &ch->ch_neo_uart->isr_fcr);
- readb(&ch->ch_neo_uart->lsr);
- readb(&ch->ch_neo_uart->msr);
-
- ch->ch_flags |= CH_FIFO_ENABLED;
-
- /* Assert any signals we want up */
- writeb(ch->ch_mostat, &ch->ch_neo_uart->mcr);
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-/*
- * Make the UART completely turn off.
- */
-static void neo_uart_off(struct channel_t *ch)
-{
- /* Turn off UART enhanced bits */
- writeb(0, &ch->ch_neo_uart->efr);
-
- /* Stop all interrupts from occurring. */
- writeb(0, &ch->ch_neo_uart->ier);
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static uint neo_get_uart_bytes_left(struct channel_t *ch)
-{
- unsigned char left = 0;
- unsigned char lsr = readb(&ch->ch_neo_uart->lsr);
-
- /* We must cache the LSR as some of the bits get reset once read... */
- ch->ch_cached_lsr |= lsr;
-
- /* Determine whether the Transmitter is empty or not */
- if (!(lsr & UART_LSR_TEMT)) {
- if (ch->ch_flags & CH_TX_FIFO_EMPTY)
- tasklet_schedule(&ch->ch_bd->helper_tasklet);
- left = 1;
- } else {
- ch->ch_flags |= (CH_TX_FIFO_EMPTY | CH_TX_FIFO_LWM);
- left = 0;
- }
-
- return left;
-}
-
-
-/* Channel lock MUST be held by the calling function! */
-static void neo_send_break(struct channel_t *ch, int msecs)
-{
- /*
- * If we receive a time of 0, this means turn off the break.
- */
- if (msecs == 0) {
- if (ch->ch_flags & CH_BREAK_SENDING) {
- unsigned char temp = readb(&ch->ch_neo_uart->lcr);
-
- writeb((temp & ~UART_LCR_SBC), &ch->ch_neo_uart->lcr);
- neo_pci_posting_flush(ch->ch_bd);
- ch->ch_flags &= ~(CH_BREAK_SENDING);
- ch->ch_stop_sending_break = 0;
- }
- return;
- }
-
- /*
- * Set the time we should stop sending the break.
- * If we are already sending a break, toss away the existing
- * time to stop, and use this new value instead.
- */
- ch->ch_stop_sending_break = jiffies + dgnc_jiffies_from_ms(msecs);
-
- /* Tell the UART to start sending the break */
- if (!(ch->ch_flags & CH_BREAK_SENDING)) {
- unsigned char temp = readb(&ch->ch_neo_uart->lcr);
-
- writeb((temp | UART_LCR_SBC), &ch->ch_neo_uart->lcr);
- neo_pci_posting_flush(ch->ch_bd);
- ch->ch_flags |= (CH_BREAK_SENDING);
- }
-}
-
-
-/*
- * neo_send_immediate_char.
- *
- * Sends a specific character as soon as possible to the UART,
- * jumping over any bytes that might be in the write queue.
- *
- * The channel lock MUST be held by the calling function.
- */
-static void neo_send_immediate_char(struct channel_t *ch, unsigned char c)
-{
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- writeb(c, &ch->ch_neo_uart->txrx);
- neo_pci_posting_flush(ch->ch_bd);
-}
-
-
-static unsigned int neo_read_eeprom(unsigned char __iomem *base, unsigned int address)
-{
- unsigned int enable;
- unsigned int bits;
- unsigned int databit;
- unsigned int val;
-
- /* enable chip select */
- writeb(NEO_EECS, base + NEO_EEREG);
- /* READ */
- enable = (address | 0x180);
-
- for (bits = 9; bits--; ) {
- databit = (enable & (1 << bits)) ? NEO_EEDI : 0;
- /* Set read address */
- writeb(databit | NEO_EECS, base + NEO_EEREG);
- writeb(databit | NEO_EECS | NEO_EECK, base + NEO_EEREG);
- }
-
- val = 0;
-
- for (bits = 17; bits--; ) {
- /* clock to EEPROM */
- writeb(NEO_EECS, base + NEO_EEREG);
- writeb(NEO_EECS | NEO_EECK, base + NEO_EEREG);
- val <<= 1;
- /* read EEPROM */
- if (readb(base + NEO_EEREG) & NEO_EEDO)
- val |= 1;
- }
-
- /* clock falling edge */
- writeb(NEO_EECS, base + NEO_EEREG);
-
- /* drop chip select */
- writeb(0x00, base + NEO_EEREG);
-
- return val;
-}
-
-
-static void neo_vpd(struct dgnc_board *brd)
-{
- unsigned int i = 0;
- unsigned int a;
-
- if (!brd || brd->magic != DGNC_BOARD_MAGIC)
- return;
-
- if (!brd->re_map_membase)
- return;
-
- /* Store the VPD into our buffer */
- for (i = 0; i < NEO_VPD_IMAGESIZE; i++) {
- a = neo_read_eeprom(brd->re_map_membase, i);
- brd->vpd[i*2] = a & 0xff;
- brd->vpd[(i*2)+1] = (a >> 8) & 0xff;
- }
-
- if (((brd->vpd[0x08] != 0x82) /* long resource name tag */
- && (brd->vpd[0x10] != 0x82)) /* long resource name tag (PCI-66 files)*/
- || (brd->vpd[0x7F] != 0x78)) { /* small resource end tag */
-
- memset(brd->vpd, '\0', NEO_VPD_IMAGESIZE);
- } else {
- /* Search for the serial number */
- for (i = 0; i < NEO_VPD_IMAGEBYTES - 3; i++)
- if (brd->vpd[i] == 'S' && brd->vpd[i + 1] == 'N')
- strncpy(brd->serial_num, &(brd->vpd[i + 3]), 9);
- }
-}
diff --git a/drivers/staging/dgnc/dgnc_neo.h b/drivers/staging/dgnc/dgnc_neo.h
deleted file mode 100644
index 1a4abb1..0000000
--- a/drivers/staging/dgnc/dgnc_neo.h
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- */
-
-#ifndef __DGNC_NEO_H
-#define __DGNC_NEO_H
-
-#include "dgnc_types.h"
-#include "dgnc_driver.h"
-
-/************************************************************************
- * Per channel/port NEO UART structure *
- ************************************************************************
- * Base Structure Entries Usage Meanings to Host *
- * *
- * W = read write R = read only *
- * U = Unused. *
- ************************************************************************/
-
-struct neo_uart_struct {
- u8 txrx; /* WR RHR/THR - Holding Reg */
- u8 ier; /* WR IER - Interrupt Enable Reg */
- u8 isr_fcr; /* WR ISR/FCR - Interrupt Status Reg/Fifo Control Reg */
- u8 lcr; /* WR LCR - Line Control Reg */
- u8 mcr; /* WR MCR - Modem Control Reg */
- u8 lsr; /* WR LSR - Line Status Reg */
- u8 msr; /* WR MSR - Modem Status Reg */
- u8 spr; /* WR SPR - Scratch Pad Reg */
- u8 fctr; /* WR FCTR - Feature Control Reg */
- u8 efr; /* WR EFR - Enhanced Function Reg */
- u8 tfifo; /* WR TXCNT/TXTRG - Transmit FIFO Reg */
- u8 rfifo; /* WR RXCNT/RXTRG - Receive FIFO Reg */
- u8 xoffchar1; /* WR XOFF 1 - XOff Character 1 Reg */
- u8 xoffchar2; /* WR XOFF 2 - XOff Character 2 Reg */
- u8 xonchar1; /* WR XON 1 - Xon Character 1 Reg */
- u8 xonchar2; /* WR XON 2 - XOn Character 2 Reg */
-
- u8 reserved1[0x2ff - 0x200]; /* U Reserved by Exar */
- u8 txrxburst[64]; /* RW 64 bytes of RX/TX FIFO Data */
- u8 reserved2[0x37f - 0x340]; /* U Reserved by Exar */
- u8 rxburst_with_errors[64]; /* R 64 bytes of RX FIFO Data + LSR */
-};
-
-/* Where to read the extended interrupt register (32bits instead of 8bits) */
-#define UART_17158_POLL_ADDR_OFFSET 0x80
-
-/* These are the current dvid's of the Neo boards */
-#define UART_XR17C158_DVID 0x20
-#define UART_XR17D158_DVID 0x20
-#define UART_XR17E158_DVID 0x40
-
-#define NEO_EECK 0x10 /* Clock */
-#define NEO_EECS 0x20 /* Chip Select */
-#define NEO_EEDI 0x40 /* Data In is an Output Pin */
-#define NEO_EEDO 0x80 /* Data Out is an Input Pin */
-#define NEO_EEREG 0x8E /* offset to EEPROM control reg */
-
-
-#define NEO_VPD_IMAGESIZE 0x40 /* size of image to read from EEPROM in words */
-#define NEO_VPD_IMAGEBYTES (NEO_VPD_IMAGESIZE * 2)
-
-/*
- * These are the redefinitions for the FCTR on the XR17C158, since
- * Exar made them different than their earlier design. (XR16C854)
- */
-
-/* These are only applicable when table D is selected */
-#define UART_17158_FCTR_RTS_NODELAY 0x00
-#define UART_17158_FCTR_RTS_4DELAY 0x01
-#define UART_17158_FCTR_RTS_6DELAY 0x02
-#define UART_17158_FCTR_RTS_8DELAY 0x03
-#define UART_17158_FCTR_RTS_12DELAY 0x12
-#define UART_17158_FCTR_RTS_16DELAY 0x05
-#define UART_17158_FCTR_RTS_20DELAY 0x13
-#define UART_17158_FCTR_RTS_24DELAY 0x06
-#define UART_17158_FCTR_RTS_28DELAY 0x14
-#define UART_17158_FCTR_RTS_32DELAY 0x07
-#define UART_17158_FCTR_RTS_36DELAY 0x16
-#define UART_17158_FCTR_RTS_40DELAY 0x08
-#define UART_17158_FCTR_RTS_44DELAY 0x09
-#define UART_17158_FCTR_RTS_48DELAY 0x10
-#define UART_17158_FCTR_RTS_52DELAY 0x11
-
-#define UART_17158_FCTR_RTS_IRDA 0x10
-#define UART_17158_FCTR_RS485 0x20
-#define UART_17158_FCTR_TRGA 0x00
-#define UART_17158_FCTR_TRGB 0x40
-#define UART_17158_FCTR_TRGC 0x80
-#define UART_17158_FCTR_TRGD 0xC0
-
-/* 17158 trigger table selects.. */
-#define UART_17158_FCTR_BIT6 0x40
-#define UART_17158_FCTR_BIT7 0x80
-
-/* 17158 TX/RX memmapped buffer offsets */
-#define UART_17158_RX_FIFOSIZE 64
-#define UART_17158_TX_FIFOSIZE 64
-
-/* 17158 Extended IIR's */
-#define UART_17158_IIR_RDI_TIMEOUT 0x0C /* Receiver data TIMEOUT */
-#define UART_17158_IIR_XONXOFF 0x10 /* Received an XON/XOFF char */
-#define UART_17158_IIR_HWFLOW_STATE_CHANGE 0x20 /* CTS/DSR or RTS/DTR state change */
-#define UART_17158_IIR_FIFO_ENABLED 0xC0 /* 16550 FIFOs are Enabled */
-
-/*
- * These are the extended interrupts that get sent
- * back to us from the UART's 32bit interrupt register
- */
-#define UART_17158_RX_LINE_STATUS 0x1 /* RX Ready */
-#define UART_17158_RXRDY_TIMEOUT 0x2 /* RX Ready Timeout */
-#define UART_17158_TXRDY 0x3 /* TX Ready */
-#define UART_17158_MSR 0x4 /* Modem State Change */
-#define UART_17158_TX_AND_FIFO_CLR 0x40 /* Transmitter Holding Reg Empty */
-#define UART_17158_RX_FIFO_DATA_ERROR 0x80 /* UART detected an RX FIFO Data error */
-
-/*
- * These are the EXTENDED definitions for the 17C158's Interrupt
- * Enable Register.
- */
-#define UART_17158_EFR_ECB 0x10 /* Enhanced control bit */
-#define UART_17158_EFR_IXON 0x2 /* Receiver compares Xon1/Xoff1 */
-#define UART_17158_EFR_IXOFF 0x8 /* Transmit Xon1/Xoff1 */
-#define UART_17158_EFR_RTSDTR 0x40 /* Auto RTS/DTR Flow Control Enable */
-#define UART_17158_EFR_CTSDSR 0x80 /* Auto CTS/DSR Flow COntrol Enable */
-
-#define UART_17158_XOFF_DETECT 0x1 /* Indicates whether chip saw an incoming XOFF char */
-#define UART_17158_XON_DETECT 0x2 /* Indicates whether chip saw an incoming XON char */
-
-#define UART_17158_IER_RSVD1 0x10 /* Reserved by Exar */
-#define UART_17158_IER_XOFF 0x20 /* Xoff Interrupt Enable */
-#define UART_17158_IER_RTSDTR 0x40 /* Output Interrupt Enable */
-#define UART_17158_IER_CTSDSR 0x80 /* Input Interrupt Enable */
-
-/*
- * Our Global Variables
- */
-extern struct board_ops dgnc_neo_ops;
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_pci.h b/drivers/staging/dgnc/dgnc_pci.h
deleted file mode 100644
index 5b6f76d..0000000
--- a/drivers/staging/dgnc/dgnc_pci.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-#ifndef __DGNC_PCI_H
-#define __DGNC_PCI_H
-
-#define PCIMAX 32 /* maximum number of PCI boards */
-
-#define DIGI_VID 0x114F
-
-#define PCI_DEVICE_CLASSIC_4_DID 0x0028
-#define PCI_DEVICE_CLASSIC_8_DID 0x0029
-#define PCI_DEVICE_CLASSIC_4_422_DID 0x00D0
-#define PCI_DEVICE_CLASSIC_8_422_DID 0x00D1
-#define PCI_DEVICE_NEO_4_DID 0x00B0
-#define PCI_DEVICE_NEO_8_DID 0x00B1
-#define PCI_DEVICE_NEO_2DB9_DID 0x00C8
-#define PCI_DEVICE_NEO_2DB9PRI_DID 0x00C9
-#define PCI_DEVICE_NEO_2RJ45_DID 0x00CA
-#define PCI_DEVICE_NEO_2RJ45PRI_DID 0x00CB
-#define PCI_DEVICE_NEO_1_422_DID 0x00CC
-#define PCI_DEVICE_NEO_1_422_485_DID 0x00CD
-#define PCI_DEVICE_NEO_2_422_485_DID 0x00CE
-#define PCI_DEVICE_NEO_EXPRESS_8_DID 0x00F0
-#define PCI_DEVICE_NEO_EXPRESS_4_DID 0x00F1
-#define PCI_DEVICE_NEO_EXPRESS_4RJ45_DID 0x00F2
-#define PCI_DEVICE_NEO_EXPRESS_8RJ45_DID 0x00F3
-#define PCI_DEVICE_NEO_EXPRESS_4_IBM_DID 0x00F4
-
-#define PCI_DEVICE_CLASSIC_4_PCI_NAME "ClassicBoard 4 PCI"
-#define PCI_DEVICE_CLASSIC_8_PCI_NAME "ClassicBoard 8 PCI"
-#define PCI_DEVICE_CLASSIC_4_422_PCI_NAME "ClassicBoard 4 422 PCI"
-#define PCI_DEVICE_CLASSIC_8_422_PCI_NAME "ClassicBoard 8 422 PCI"
-#define PCI_DEVICE_NEO_4_PCI_NAME "Neo 4 PCI"
-#define PCI_DEVICE_NEO_8_PCI_NAME "Neo 8 PCI"
-#define PCI_DEVICE_NEO_2DB9_PCI_NAME "Neo 2 - DB9 Universal PCI"
-#define PCI_DEVICE_NEO_2DB9PRI_PCI_NAME "Neo 2 - DB9 Universal PCI - Powered Ring Indicator"
-#define PCI_DEVICE_NEO_2RJ45_PCI_NAME "Neo 2 - RJ45 Universal PCI"
-#define PCI_DEVICE_NEO_2RJ45PRI_PCI_NAME "Neo 2 - RJ45 Universal PCI - Powered Ring Indicator"
-#define PCI_DEVICE_NEO_1_422_PCI_NAME "Neo 1 422 PCI"
-#define PCI_DEVICE_NEO_1_422_485_PCI_NAME "Neo 1 422/485 PCI"
-#define PCI_DEVICE_NEO_2_422_485_PCI_NAME "Neo 2 422/485 PCI"
-
-#define PCI_DEVICE_NEO_EXPRESS_8_PCI_NAME "Neo 8 PCI Express"
-#define PCI_DEVICE_NEO_EXPRESS_4_PCI_NAME "Neo 4 PCI Express"
-#define PCI_DEVICE_NEO_EXPRESS_4RJ45_PCI_NAME "Neo 4 PCI Express RJ45"
-#define PCI_DEVICE_NEO_EXPRESS_8RJ45_PCI_NAME "Neo 8 PCI Express RJ45"
-#define PCI_DEVICE_NEO_EXPRESS_4_IBM_PCI_NAME "Neo 4 PCI Express IBM"
-
-
-/* Size of Memory and I/O for PCI (4 K) */
-#define PCI_RAM_SIZE 0x1000
-
-/* Size of Memory (2MB) */
-#define PCI_MEM_SIZE 0x1000
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_sysfs.c b/drivers/staging/dgnc/dgnc_sysfs.c
deleted file mode 100644
index 6c3b387..0000000
--- a/drivers/staging/dgnc/dgnc_sysfs.c
+++ /dev/null
@@ -1,750 +0,0 @@
-/*
- * Copyright 2004 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- *
- */
-
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/serial_reg.h>
-#include <linux/device.h>
-#include <linux/pci.h>
-#include <linux/kdev_t.h>
-
-#include "dgnc_driver.h"
-#include "dgnc_mgmt.h"
-
-
-static ssize_t dgnc_driver_version_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
-}
-static DRIVER_ATTR(version, S_IRUSR, dgnc_driver_version_show, NULL);
-
-
-static ssize_t dgnc_driver_boards_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n", dgnc_NumBoards);
-}
-static DRIVER_ATTR(boards, S_IRUSR, dgnc_driver_boards_show, NULL);
-
-
-static ssize_t dgnc_driver_maxboards_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
-}
-static DRIVER_ATTR(maxboards, S_IRUSR, dgnc_driver_maxboards_show, NULL);
-
-static ssize_t dgnc_driver_debug_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "0x%x\n", dgnc_debug);
-}
-
-static ssize_t dgnc_driver_debug_store(struct device_driver *ddp, const char *buf, size_t count)
-{
- int ret;
-
- ret = sscanf(buf, "0x%x\n", &dgnc_debug);
- if (ret != 1)
- return -EINVAL;
- return count;
-}
-static DRIVER_ATTR(debug, (S_IRUSR | S_IWUSR), dgnc_driver_debug_show, dgnc_driver_debug_store);
-
-
-static ssize_t dgnc_driver_rawreadok_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "0x%x\n", dgnc_rawreadok);
-}
-
-static ssize_t dgnc_driver_rawreadok_store(struct device_driver *ddp, const char *buf, size_t count)
-{
- int ret;
-
- ret = sscanf(buf, "0x%x\n", &dgnc_rawreadok);
- if (ret != 1)
- return -EINVAL;
- return count;
-}
-static DRIVER_ATTR(rawreadok, (S_IRUSR | S_IWUSR), dgnc_driver_rawreadok_show, dgnc_driver_rawreadok_store);
-
-
-static ssize_t dgnc_driver_pollrate_show(struct device_driver *ddp, char *buf)
-{
- return snprintf(buf, PAGE_SIZE, "%dms\n", dgnc_poll_tick);
-}
-
-static ssize_t dgnc_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
-{
- int ret;
-
- ret = sscanf(buf, "%d\n", &dgnc_poll_tick);
- if (ret != 1)
- return -EINVAL;
- return count;
-}
-static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgnc_driver_pollrate_show, dgnc_driver_pollrate_store);
-
-
-void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver)
-{
- int rc = 0;
- struct device_driver *driverfs = &dgnc_driver->driver;
-
- rc |= driver_create_file(driverfs, &driver_attr_version);
- rc |= driver_create_file(driverfs, &driver_attr_boards);
- rc |= driver_create_file(driverfs, &driver_attr_maxboards);
- rc |= driver_create_file(driverfs, &driver_attr_debug);
- rc |= driver_create_file(driverfs, &driver_attr_rawreadok);
- rc |= driver_create_file(driverfs, &driver_attr_pollrate);
- if (rc)
- printk(KERN_ERR "DGNC: sysfs driver_create_file failed!\n");
-}
-
-
-void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
-{
- struct device_driver *driverfs = &dgnc_driver->driver;
-
- driver_remove_file(driverfs, &driver_attr_version);
- driver_remove_file(driverfs, &driver_attr_boards);
- driver_remove_file(driverfs, &driver_attr_maxboards);
- driver_remove_file(driverfs, &driver_attr_debug);
- driver_remove_file(driverfs, &driver_attr_rawreadok);
- driver_remove_file(driverfs, &driver_attr_pollrate);
-}
-
-
-#define DGNC_VERIFY_BOARD(p, bd) \
- do { \
- if (!p) \
- return 0; \
- \
- bd = dev_get_drvdata(p); \
- if (!bd || bd->magic != DGNC_BOARD_MAGIC) \
- return 0; \
- if (bd->state != BOARD_READY) \
- return 0; \
- } while (0)
-
-
-
-static ssize_t dgnc_vpd_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- count += sprintf(buf + count, "\n 0 1 2 3 4 5 6 7 8 9 A B C D E F");
- for (i = 0; i < 0x40 * 2; i++) {
- if (!(i % 16))
- count += sprintf(buf + count, "\n%04X ", i * 2);
- count += sprintf(buf + count, "%02X ", bd->vpd[i]);
- }
- count += sprintf(buf + count, "\n");
-
- return count;
-}
-static DEVICE_ATTR(vpd, S_IRUSR, dgnc_vpd_show, NULL);
-
-static ssize_t dgnc_serial_number_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- if (bd->serial_num[0] == '\0')
- count += sprintf(buf + count, "<UNKNOWN>\n");
- else
- count += sprintf(buf + count, "%s\n", bd->serial_num);
-
- return count;
-}
-static DEVICE_ATTR(serial_number, S_IRUSR, dgnc_serial_number_show, NULL);
-
-
-static ssize_t dgnc_ports_state_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %s\n", bd->channels[i]->ch_portnum,
- bd->channels[i]->ch_open_count ? "Open" : "Closed");
- }
- return count;
-}
-static DEVICE_ATTR(ports_state, S_IRUSR, dgnc_ports_state_show, NULL);
-
-
-static ssize_t dgnc_ports_baud_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %d\n", bd->channels[i]->ch_portnum, bd->channels[i]->ch_old_baud);
- }
- return count;
-}
-static DEVICE_ATTR(ports_baud, S_IRUSR, dgnc_ports_baud_show, NULL);
-
-
-static ssize_t dgnc_ports_msignals_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- if (bd->channels[i]->ch_open_count) {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d %s %s %s %s %s %s\n", bd->channels[i]->ch_portnum,
- (bd->channels[i]->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
- (bd->channels[i]->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
- (bd->channels[i]->ch_mistat & UART_MSR_RI) ? "RI" : "");
- } else {
- count += snprintf(buf + count, PAGE_SIZE - count,
- "%d\n", bd->channels[i]->ch_portnum);
- }
- }
- return count;
-}
-static DEVICE_ATTR(ports_msignals, S_IRUSR, dgnc_ports_msignals_show, NULL);
-
-
-static ssize_t dgnc_ports_iflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_iflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_iflag, S_IRUSR, dgnc_ports_iflag_show, NULL);
-
-
-static ssize_t dgnc_ports_cflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_cflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_cflag, S_IRUSR, dgnc_ports_cflag_show, NULL);
-
-
-static ssize_t dgnc_ports_oflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_oflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_oflag, S_IRUSR, dgnc_ports_oflag_show, NULL);
-
-
-static ssize_t dgnc_ports_lflag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_c_lflag);
- }
- return count;
-}
-static DEVICE_ATTR(ports_lflag, S_IRUSR, dgnc_ports_lflag_show, NULL);
-
-
-static ssize_t dgnc_ports_digi_flag_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_digi.digi_flags);
- }
- return count;
-}
-static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgnc_ports_digi_flag_show, NULL);
-
-
-static ssize_t dgnc_ports_rxcount_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_rxcount);
- }
- return count;
-}
-static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgnc_ports_rxcount_show, NULL);
-
-
-static ssize_t dgnc_ports_txcount_show(struct device *p, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- int count = 0;
- int i = 0;
-
- DGNC_VERIFY_BOARD(p, bd);
-
- for (i = 0; i < bd->nasync; i++) {
- count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
- bd->channels[i]->ch_portnum, bd->channels[i]->ch_txcount);
- }
- return count;
-}
-static DEVICE_ATTR(ports_txcount, S_IRUSR, dgnc_ports_txcount_show, NULL);
-
-
-/* this function creates the sys files that will export each signal status
- * to sysfs each value will be put in a separate filename
- */
-void dgnc_create_ports_sysfiles(struct dgnc_board *bd)
-{
- int rc = 0;
-
- dev_set_drvdata(&bd->pdev->dev, bd);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_state);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_baud);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_vpd);
- rc |= device_create_file(&(bd->pdev->dev), &dev_attr_serial_number);
- if (rc)
- printk(KERN_ERR "DGNC: sysfs device_create_file failed!\n");
-}
-
-
-/* removes all the sys files created for that port */
-void dgnc_remove_ports_sysfiles(struct dgnc_board *bd)
-{
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_state);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_baud);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_msignals);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_iflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_cflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_oflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_lflag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_digi_flag);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_rxcount);
- device_remove_file(&(bd->pdev->dev), &dev_attr_ports_txcount);
- device_remove_file(&(bd->pdev->dev), &dev_attr_vpd);
- device_remove_file(&(bd->pdev->dev), &dev_attr_serial_number);
-}
-
-
-static ssize_t dgnc_tty_state_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ? "Open" : "Closed");
-}
-static DEVICE_ATTR(state, S_IRUSR, dgnc_tty_state_show, NULL);
-
-
-static ssize_t dgnc_tty_baud_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_old_baud);
-}
-static DEVICE_ATTR(baud, S_IRUSR, dgnc_tty_baud_show, NULL);
-
-
-static ssize_t dgnc_tty_msignals_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- if (ch->ch_open_count) {
- return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
- (ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
- (ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
- (ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
- (ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
- (ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
- (ch->ch_mistat & UART_MSR_RI) ? "RI" : "");
- }
- return 0;
-}
-static DEVICE_ATTR(msignals, S_IRUSR, dgnc_tty_msignals_show, NULL);
-
-
-static ssize_t dgnc_tty_iflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
-}
-static DEVICE_ATTR(iflag, S_IRUSR, dgnc_tty_iflag_show, NULL);
-
-
-static ssize_t dgnc_tty_cflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
-}
-static DEVICE_ATTR(cflag, S_IRUSR, dgnc_tty_cflag_show, NULL);
-
-
-static ssize_t dgnc_tty_oflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
-}
-static DEVICE_ATTR(oflag, S_IRUSR, dgnc_tty_oflag_show, NULL);
-
-
-static ssize_t dgnc_tty_lflag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
-}
-static DEVICE_ATTR(lflag, S_IRUSR, dgnc_tty_lflag_show, NULL);
-
-
-static ssize_t dgnc_tty_digi_flag_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
-}
-static DEVICE_ATTR(digi_flag, S_IRUSR, dgnc_tty_digi_flag_show, NULL);
-
-
-static ssize_t dgnc_tty_rxcount_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
-}
-static DEVICE_ATTR(rxcount, S_IRUSR, dgnc_tty_rxcount_show, NULL);
-
-
-static ssize_t dgnc_tty_txcount_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
-}
-static DEVICE_ATTR(txcount, S_IRUSR, dgnc_tty_txcount_show, NULL);
-
-
-static ssize_t dgnc_tty_name_show(struct device *d, struct device_attribute *attr, char *buf)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
-
- if (!d)
- return 0;
- un = dev_get_drvdata(d);
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return 0;
- if (bd->state != BOARD_READY)
- return 0;
-
- return snprintf(buf, PAGE_SIZE, "%sn%d%c\n",
- (un->un_type == DGNC_PRINT) ? "pr" : "tty",
- bd->boardnum + 1, 'a' + ch->ch_portnum);
-}
-static DEVICE_ATTR(custom_name, S_IRUSR, dgnc_tty_name_show, NULL);
-
-
-static struct attribute *dgnc_sysfs_tty_entries[] = {
- &dev_attr_state.attr,
- &dev_attr_baud.attr,
- &dev_attr_msignals.attr,
- &dev_attr_iflag.attr,
- &dev_attr_cflag.attr,
- &dev_attr_oflag.attr,
- &dev_attr_lflag.attr,
- &dev_attr_digi_flag.attr,
- &dev_attr_rxcount.attr,
- &dev_attr_txcount.attr,
- &dev_attr_custom_name.attr,
- NULL
-};
-
-
-static struct attribute_group dgnc_tty_attribute_group = {
- .name = NULL,
- .attrs = dgnc_sysfs_tty_entries,
-};
-
-
-void dgnc_create_tty_sysfs(struct un_t *un, struct device *c)
-{
- int ret;
-
- ret = sysfs_create_group(&c->kobj, &dgnc_tty_attribute_group);
- if (ret) {
- dev_err(c, "dgnc: failed to create sysfs tty device attributes.\n");
- sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
- return;
- }
-
- dev_set_drvdata(c, un);
-
-}
-
-
-void dgnc_remove_tty_sysfs(struct device *c)
-{
- sysfs_remove_group(&c->kobj, &dgnc_tty_attribute_group);
-}
-
diff --git a/drivers/staging/dgnc/dgnc_sysfs.h b/drivers/staging/dgnc/dgnc_sysfs.h
deleted file mode 100644
index 68c0de5..0000000
--- a/drivers/staging/dgnc/dgnc_sysfs.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-#ifndef __DGNC_SYSFS_H
-#define __DGNC_SYSFS_H
-
-#include "dgnc_driver.h"
-
-#include <linux/device.h>
-
-struct dgnc_board;
-struct channel_t;
-struct un_t;
-struct pci_driver;
-struct class_device;
-
-extern void dgnc_create_ports_sysfiles(struct dgnc_board *bd);
-extern void dgnc_remove_ports_sysfiles(struct dgnc_board *bd);
-
-extern void dgnc_create_driver_sysfiles(struct pci_driver *);
-extern void dgnc_remove_driver_sysfiles(struct pci_driver *);
-
-extern int dgnc_tty_class_init(void);
-extern int dgnc_tty_class_destroy(void);
-
-extern void dgnc_create_tty_sysfs(struct un_t *un, struct device *c);
-extern void dgnc_remove_tty_sysfs(struct device *c);
-
-
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_tty.c b/drivers/staging/dgnc/dgnc_tty.c
deleted file mode 100644
index 03c1506..0000000
--- a/drivers/staging/dgnc/dgnc_tty.c
+++ /dev/null
@@ -1,3201 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * NOTE TO LINUX KERNEL HACKERS: DO NOT REFORMAT THIS CODE!
- *
- * This is shared code between Digi's CVS archive and the
- * Linux Kernel sources.
- * Changing the source just for reformatting needlessly breaks
- * our CVS diff history.
- *
- * Send any bug fixes/changes to: Eng.Linux at digi dot com.
- * Thank you.
- */
-
-/************************************************************************
- *
- * This file implements the tty driver functionality for the
- * Neo and ClassicBoard PCI based product lines.
- *
- ************************************************************************
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h> /* For jiffies, task states */
-#include <linux/interrupt.h> /* For tasklet and interrupt structs/defines */
-#include <linux/module.h>
-#include <linux/ctype.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_reg.h>
-#include <linux/slab.h>
-#include <linux/delay.h> /* For udelay */
-#include <linux/uaccess.h> /* For copy_from_user/copy_to_user */
-#include <linux/pci.h>
-
-#include "dgnc_driver.h"
-#include "dgnc_tty.h"
-#include "dgnc_types.h"
-#include "dgnc_neo.h"
-#include "dgnc_cls.h"
-#include "dpacompat.h"
-#include "dgnc_sysfs.h"
-#include "dgnc_utils.h"
-
-#define init_MUTEX(sem) sema_init(sem, 1)
-#define DECLARE_MUTEX(name) \
- struct semaphore name = __SEMAPHORE_INITIALIZER(name, 1)
-
-/*
- * internal variables
- */
-static struct dgnc_board *dgnc_BoardsByMajor[256];
-static unsigned char *dgnc_TmpWriteBuf;
-static DECLARE_MUTEX(dgnc_TmpWriteSem);
-
-/*
- * Default transparent print information.
- */
-static struct digi_t dgnc_digi_init = {
- .digi_flags = DIGI_COOK, /* Flags */
- .digi_maxcps = 100, /* Max CPS */
- .digi_maxchar = 50, /* Max chars in print queue */
- .digi_bufsize = 100, /* Printer buffer size */
- .digi_onlen = 4, /* size of printer on string */
- .digi_offlen = 4, /* size of printer off string */
- .digi_onstr = "\033[5i", /* ANSI printer on string ] */
- .digi_offstr = "\033[4i", /* ANSI printer off string ] */
- .digi_term = "ansi" /* default terminal type */
-};
-
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially.
- *
- * This defines a raw port at 9600 baud, 8 data bits, no parity,
- * 1 stop bit.
- */
-static struct ktermios DgncDefaultTermios = {
- .c_iflag = (DEFAULT_IFLAGS), /* iflags */
- .c_oflag = (DEFAULT_OFLAGS), /* oflags */
- .c_cflag = (DEFAULT_CFLAGS), /* cflags */
- .c_lflag = (DEFAULT_LFLAGS), /* lflags */
- .c_cc = INIT_C_CC,
- .c_line = 0,
-};
-
-
-/* Our function prototypes */
-static int dgnc_tty_open(struct tty_struct *tty, struct file *file);
-static void dgnc_tty_close(struct tty_struct *tty, struct file *file);
-static int dgnc_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch);
-static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg);
-static int dgnc_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo);
-static int dgnc_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info);
-static int dgnc_tty_write_room(struct tty_struct *tty);
-static int dgnc_tty_put_char(struct tty_struct *tty, unsigned char c);
-static int dgnc_tty_chars_in_buffer(struct tty_struct *tty);
-static void dgnc_tty_start(struct tty_struct *tty);
-static void dgnc_tty_stop(struct tty_struct *tty);
-static void dgnc_tty_throttle(struct tty_struct *tty);
-static void dgnc_tty_unthrottle(struct tty_struct *tty);
-static void dgnc_tty_flush_chars(struct tty_struct *tty);
-static void dgnc_tty_flush_buffer(struct tty_struct *tty);
-static void dgnc_tty_hangup(struct tty_struct *tty);
-static int dgnc_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value);
-static int dgnc_get_modem_info(struct channel_t *ch, unsigned int __user *value);
-static int dgnc_tty_tiocmget(struct tty_struct *tty);
-static int dgnc_tty_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear);
-static int dgnc_tty_send_break(struct tty_struct *tty, int msec);
-static void dgnc_tty_wait_until_sent(struct tty_struct *tty, int timeout);
-static int dgnc_tty_write(struct tty_struct *tty, const unsigned char *buf, int count);
-static void dgnc_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios);
-static void dgnc_tty_send_xchar(struct tty_struct *tty, char ch);
-
-
-static const struct tty_operations dgnc_tty_ops = {
- .open = dgnc_tty_open,
- .close = dgnc_tty_close,
- .write = dgnc_tty_write,
- .write_room = dgnc_tty_write_room,
- .flush_buffer = dgnc_tty_flush_buffer,
- .chars_in_buffer = dgnc_tty_chars_in_buffer,
- .flush_chars = dgnc_tty_flush_chars,
- .ioctl = dgnc_tty_ioctl,
- .set_termios = dgnc_tty_set_termios,
- .stop = dgnc_tty_stop,
- .start = dgnc_tty_start,
- .throttle = dgnc_tty_throttle,
- .unthrottle = dgnc_tty_unthrottle,
- .hangup = dgnc_tty_hangup,
- .put_char = dgnc_tty_put_char,
- .tiocmget = dgnc_tty_tiocmget,
- .tiocmset = dgnc_tty_tiocmset,
- .break_ctl = dgnc_tty_send_break,
- .wait_until_sent = dgnc_tty_wait_until_sent,
- .send_xchar = dgnc_tty_send_xchar
-};
-
-/************************************************************************
- *
- * TTY Initialization/Cleanup Functions
- *
- ************************************************************************/
-
-/*
- * dgnc_tty_preinit()
- *
- * Initialize any global tty related data before we download any boards.
- */
-int dgnc_tty_preinit(void)
-{
- /*
- * Allocate a buffer for doing the copy from user space to
- * kernel space in dgnc_write(). We only use one buffer and
- * control access to it with a semaphore. If we are paging, we
- * are already in trouble so one buffer won't hurt much anyway.
- *
- * We are okay to sleep in the malloc, as this routine
- * is only called during module load, (not in interrupt context),
- * and with no locks held.
- */
- dgnc_TmpWriteBuf = kmalloc(WRITEBUFLEN, GFP_KERNEL);
-
- if (!dgnc_TmpWriteBuf)
- return -ENOMEM;
-
- return 0;
-}
-
-
-/*
- * dgnc_tty_register()
- *
- * Init the tty subsystem for this board.
- */
-int dgnc_tty_register(struct dgnc_board *brd)
-{
- int rc = 0;
-
- brd->SerialDriver.magic = TTY_DRIVER_MAGIC;
-
- snprintf(brd->SerialName, MAXTTYNAMELEN, "tty_dgnc_%d_", brd->boardnum);
-
- brd->SerialDriver.name = brd->SerialName;
- brd->SerialDriver.name_base = 0;
- brd->SerialDriver.major = 0;
- brd->SerialDriver.minor_start = 0;
- brd->SerialDriver.num = brd->maxports;
- brd->SerialDriver.type = TTY_DRIVER_TYPE_SERIAL;
- brd->SerialDriver.subtype = SERIAL_TYPE_NORMAL;
- brd->SerialDriver.init_termios = DgncDefaultTermios;
- brd->SerialDriver.driver_name = DRVSTR;
- brd->SerialDriver.flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
-
- /*
- * The kernel wants space to store pointers to
- * tty_struct's and termios's.
- */
- brd->SerialDriver.ttys = kcalloc(brd->maxports, sizeof(*brd->SerialDriver.ttys), GFP_KERNEL);
- if (!brd->SerialDriver.ttys)
- return -ENOMEM;
-
- kref_init(&brd->SerialDriver.kref);
- brd->SerialDriver.termios = kcalloc(brd->maxports, sizeof(*brd->SerialDriver.termios), GFP_KERNEL);
- if (!brd->SerialDriver.termios)
- return -ENOMEM;
-
- /*
- * Entry points for driver. Called by the kernel from
- * tty_io.c and n_tty.c.
- */
- tty_set_operations(&brd->SerialDriver, &dgnc_tty_ops);
-
- if (!brd->dgnc_Major_Serial_Registered) {
- /* Register tty devices */
- rc = tty_register_driver(&brd->SerialDriver);
- if (rc < 0) {
- APR(("Can't register tty device (%d)\n", rc));
- return rc;
- }
- brd->dgnc_Major_Serial_Registered = TRUE;
- }
-
- /*
- * If we're doing transparent print, we have to do all of the above
- * again, separately so we don't get the LD confused about what major
- * we are when we get into the dgnc_tty_open() routine.
- */
- brd->PrintDriver.magic = TTY_DRIVER_MAGIC;
- snprintf(brd->PrintName, MAXTTYNAMELEN, "pr_dgnc_%d_", brd->boardnum);
-
- brd->PrintDriver.name = brd->PrintName;
- brd->PrintDriver.name_base = 0;
- brd->PrintDriver.major = brd->SerialDriver.major;
- brd->PrintDriver.minor_start = 0x80;
- brd->PrintDriver.num = brd->maxports;
- brd->PrintDriver.type = TTY_DRIVER_TYPE_SERIAL;
- brd->PrintDriver.subtype = SERIAL_TYPE_NORMAL;
- brd->PrintDriver.init_termios = DgncDefaultTermios;
- brd->PrintDriver.driver_name = DRVSTR;
- brd->PrintDriver.flags = (TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK);
-
- /*
- * The kernel wants space to store pointers to
- * tty_struct's and termios's. Must be separated from
- * the Serial Driver so we don't get confused
- */
- brd->PrintDriver.ttys = kcalloc(brd->maxports, sizeof(*brd->PrintDriver.ttys), GFP_KERNEL);
- if (!brd->PrintDriver.ttys)
- return -ENOMEM;
- kref_init(&brd->PrintDriver.kref);
- brd->PrintDriver.termios = kcalloc(brd->maxports, sizeof(*brd->PrintDriver.termios), GFP_KERNEL);
- if (!brd->PrintDriver.termios)
- return -ENOMEM;
-
- /*
- * Entry points for driver. Called by the kernel from
- * tty_io.c and n_tty.c.
- */
- tty_set_operations(&brd->PrintDriver, &dgnc_tty_ops);
-
- if (!brd->dgnc_Major_TransparentPrint_Registered) {
- /* Register Transparent Print devices */
- rc = tty_register_driver(&brd->PrintDriver);
- if (rc < 0) {
- APR(("Can't register Transparent Print device (%d)\n", rc));
- return rc;
- }
- brd->dgnc_Major_TransparentPrint_Registered = TRUE;
- }
-
- dgnc_BoardsByMajor[brd->SerialDriver.major] = brd;
- brd->dgnc_Serial_Major = brd->SerialDriver.major;
- brd->dgnc_TransparentPrint_Major = brd->PrintDriver.major;
-
- return rc;
-}
-
-
-/*
- * dgnc_tty_init()
- *
- * Init the tty subsystem. Called once per board after board has been
- * downloaded and init'ed.
- */
-int dgnc_tty_init(struct dgnc_board *brd)
-{
- int i;
- void __iomem *vaddr;
- struct channel_t *ch;
-
- if (!brd)
- return -ENXIO;
-
- /*
- * Initialize board structure elements.
- */
-
- vaddr = brd->re_map_membase;
-
- brd->nasync = brd->maxports;
-
- /*
- * Allocate channel memory that might not have been allocated
- * when the driver was first loaded.
- */
- for (i = 0; i < brd->nasync; i++) {
- if (!brd->channels[i]) {
-
- /*
- * Okay to malloc with GFP_KERNEL, we are not at
- * interrupt context, and there are no locks held.
- */
- brd->channels[i] = kzalloc(sizeof(*brd->channels[i]), GFP_KERNEL);
- }
- }
-
- ch = brd->channels[0];
- vaddr = brd->re_map_membase;
-
- /* Set up channel variables */
- for (i = 0; i < brd->nasync; i++, ch = brd->channels[i]) {
-
- if (!brd->channels[i])
- continue;
-
- spin_lock_init(&ch->ch_lock);
-
- /* Store all our magic numbers */
- ch->magic = DGNC_CHANNEL_MAGIC;
- ch->ch_tun.magic = DGNC_UNIT_MAGIC;
- ch->ch_tun.un_ch = ch;
- ch->ch_tun.un_type = DGNC_SERIAL;
- ch->ch_tun.un_dev = i;
-
- ch->ch_pun.magic = DGNC_UNIT_MAGIC;
- ch->ch_pun.un_ch = ch;
- ch->ch_pun.un_type = DGNC_PRINT;
- ch->ch_pun.un_dev = i + 128;
-
- if (brd->bd_uart_offset == 0x200)
- ch->ch_neo_uart = vaddr + (brd->bd_uart_offset * i);
- else
- ch->ch_cls_uart = vaddr + (brd->bd_uart_offset * i);
-
- ch->ch_bd = brd;
- ch->ch_portnum = i;
- ch->ch_digi = dgnc_digi_init;
-
- /* .25 second delay */
- ch->ch_close_delay = 250;
-
- init_waitqueue_head(&ch->ch_flags_wait);
- init_waitqueue_head(&ch->ch_tun.un_flags_wait);
- init_waitqueue_head(&ch->ch_pun.un_flags_wait);
- init_waitqueue_head(&ch->ch_sniff_wait);
-
- {
- struct device *classp;
-
- classp = tty_register_device(&brd->SerialDriver, i,
- &(ch->ch_bd->pdev->dev));
- ch->ch_tun.un_sysfs = classp;
- dgnc_create_tty_sysfs(&ch->ch_tun, classp);
-
- classp = tty_register_device(&brd->PrintDriver, i,
- &(ch->ch_bd->pdev->dev));
- ch->ch_pun.un_sysfs = classp;
- dgnc_create_tty_sysfs(&ch->ch_pun, classp);
- }
-
- }
-
- return 0;
-}
-
-
-/*
- * dgnc_tty_post_uninit()
- *
- * UnInitialize any global tty related data.
- */
-void dgnc_tty_post_uninit(void)
-{
- kfree(dgnc_TmpWriteBuf);
- dgnc_TmpWriteBuf = NULL;
-}
-
-
-/*
- * dgnc_tty_uninit()
- *
- * Uninitialize the TTY portion of this driver. Free all memory and
- * resources.
- */
-void dgnc_tty_uninit(struct dgnc_board *brd)
-{
- int i = 0;
-
- if (brd->dgnc_Major_Serial_Registered) {
- dgnc_BoardsByMajor[brd->SerialDriver.major] = NULL;
- brd->dgnc_Serial_Major = 0;
- for (i = 0; i < brd->nasync; i++) {
- dgnc_remove_tty_sysfs(brd->channels[i]->ch_tun.un_sysfs);
- tty_unregister_device(&brd->SerialDriver, i);
- }
- tty_unregister_driver(&brd->SerialDriver);
- brd->dgnc_Major_Serial_Registered = FALSE;
- }
-
- if (brd->dgnc_Major_TransparentPrint_Registered) {
- dgnc_BoardsByMajor[brd->PrintDriver.major] = NULL;
- brd->dgnc_TransparentPrint_Major = 0;
- for (i = 0; i < brd->nasync; i++) {
- dgnc_remove_tty_sysfs(brd->channels[i]->ch_pun.un_sysfs);
- tty_unregister_device(&brd->PrintDriver, i);
- }
- tty_unregister_driver(&brd->PrintDriver);
- brd->dgnc_Major_TransparentPrint_Registered = FALSE;
- }
-
- kfree(brd->SerialDriver.ttys);
- brd->SerialDriver.ttys = NULL;
- kfree(brd->PrintDriver.ttys);
- brd->PrintDriver.ttys = NULL;
-}
-
-
-#define TMPBUFLEN (1024)
-
-/*
- * dgnc_sniff - Dump data out to the "sniff" buffer if the
- * proc sniff file is opened...
- */
-void dgnc_sniff_nowait_nolock(struct channel_t *ch, unsigned char *text, unsigned char *buf, int len)
-{
- struct timeval tv;
- int n;
- int r;
- int nbuf;
- int i;
- int tmpbuflen;
- char *tmpbuf;
- char *p;
- int too_much_data;
-
- tmpbuf = kzalloc(TMPBUFLEN, GFP_ATOMIC);
- if (!tmpbuf)
- return;
- p = tmpbuf;
-
- /* Leave if sniff not open */
- if (!(ch->ch_sniff_flags & SNIFF_OPEN))
- goto exit;
-
- do_gettimeofday(&tv);
-
- /* Create our header for data dump */
- p += sprintf(p, "<%ld %ld><%s><", tv.tv_sec, tv.tv_usec, text);
- tmpbuflen = p - tmpbuf;
-
- do {
- too_much_data = 0;
-
- for (i = 0; i < len && tmpbuflen < (TMPBUFLEN - 4); i++) {
- p += sprintf(p, "%02x ", *buf);
- buf++;
- tmpbuflen = p - tmpbuf;
- }
-
- if (tmpbuflen < (TMPBUFLEN - 4)) {
- if (i > 0)
- p += sprintf(p - 1, "%s\n", ">");
- else
- p += sprintf(p, "%s\n", ">");
- } else {
- too_much_data = 1;
- len -= i;
- }
-
- nbuf = strlen(tmpbuf);
- p = tmpbuf;
-
- /*
- * Loop while data remains.
- */
- while (nbuf > 0 && ch->ch_sniff_buf) {
- /*
- * Determine the amount of available space left in the
- * buffer. If there's none, wait until some appears.
- */
- n = (ch->ch_sniff_out - ch->ch_sniff_in - 1) & SNIFF_MASK;
-
- /*
- * If there is no space left to write to in our sniff buffer,
- * we have no choice but to drop the data.
- * We *cannot* sleep here waiting for space, because this
- * function was probably called by the interrupt/timer routines!
- */
- if (n == 0)
- goto exit;
-
- /*
- * Copy as much data as will fit.
- */
-
- if (n > nbuf)
- n = nbuf;
-
- r = SNIFF_MAX - ch->ch_sniff_in;
-
- if (r <= n) {
- memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, r);
-
- n -= r;
- ch->ch_sniff_in = 0;
- p += r;
- nbuf -= r;
- }
-
- memcpy(ch->ch_sniff_buf + ch->ch_sniff_in, p, n);
-
- ch->ch_sniff_in += n;
- p += n;
- nbuf -= n;
-
- /*
- * Wakeup any thread waiting for data
- */
- if (ch->ch_sniff_flags & SNIFF_WAIT_DATA) {
- ch->ch_sniff_flags &= ~SNIFF_WAIT_DATA;
- wake_up_interruptible(&ch->ch_sniff_wait);
- }
- }
-
- /*
- * If the user sent us too much data to push into our tmpbuf,
- * we need to keep looping around on all the data.
- */
- if (too_much_data) {
- p = tmpbuf;
- tmpbuflen = 0;
- }
-
- } while (too_much_data);
-
-exit:
- kfree(tmpbuf);
-}
-
-
-/*=======================================================================
- *
- * dgnc_wmove - Write data to transmit queue.
- *
- * ch - Pointer to channel structure.
- * buf - Poiter to characters to be moved.
- * n - Number of characters to move.
- *
- *=======================================================================*/
-static void dgnc_wmove(struct channel_t *ch, char *buf, uint n)
-{
- int remain;
- uint head;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- head = ch->ch_w_head & WQUEUEMASK;
-
- /*
- * If the write wraps over the top of the circular buffer,
- * move the portion up to the wrap point, and reset the
- * pointers to the bottom.
- */
- remain = WQUEUESIZE - head;
-
- if (n >= remain) {
- n -= remain;
- memcpy(ch->ch_wqueue + head, buf, remain);
- head = 0;
- buf += remain;
- }
-
- if (n > 0) {
- /*
- * Move rest of data.
- */
- remain = n;
- memcpy(ch->ch_wqueue + head, buf, remain);
- head += remain;
- }
-
- head &= WQUEUEMASK;
- ch->ch_w_head = head;
-}
-
-
-
-
-/*=======================================================================
- *
- * dgnc_input - Process received data.
- *
- * ch - Pointer to channel structure.
- *
- *=======================================================================*/
-void dgnc_input(struct channel_t *ch)
-{
- struct dgnc_board *bd;
- struct tty_struct *tp;
- struct tty_ldisc *ld;
- uint rmask;
- ushort head;
- ushort tail;
- int data_len;
- unsigned long flags;
- int flip_len;
- int len = 0;
- int n = 0;
- int s = 0;
- int i = 0;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- tp = ch->ch_tun.un_tty;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /*
- * Figure the number of characters in the buffer.
- * Exit immediately if none.
- */
- rmask = RQUEUEMASK;
- head = ch->ch_r_head & rmask;
- tail = ch->ch_r_tail & rmask;
- data_len = (head - tail) & rmask;
-
- if (data_len == 0) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /*
- * If the device is not open, or CREAD is off,
- * flush input data and return immediately.
- */
- if (!tp || (tp->magic != TTY_MAGIC) || !(ch->ch_tun.un_flags & UN_ISOPEN) ||
- !(tp->termios.c_cflag & CREAD) || (ch->ch_tun.un_flags & UN_CLOSING)) {
-
- ch->ch_r_head = tail;
-
- /* Force queue flow control to be released, if needed */
- dgnc_check_queue_flow_control(ch);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /*
- * If we are throttled, simply don't read any data.
- */
- if (ch->ch_flags & CH_FORCED_STOPI) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- flip_len = TTY_FLIPBUF_SIZE;
-
- /* Chop down the length, if needed */
- len = min(data_len, flip_len);
- len = min(len, (N_TTY_BUF_SIZE - 1));
-
- ld = tty_ldisc_ref(tp);
-
-#ifdef TTY_DONT_FLIP
- /*
- * If the DONT_FLIP flag is on, don't flush our buffer, and act
- * like the ld doesn't have any space to put the data right now.
- */
- if (test_bit(TTY_DONT_FLIP, &tp->flags))
- len = 0;
-#endif
-
- /*
- * If we were unable to get a reference to the ld,
- * don't flush our buffer, and act like the ld doesn't
- * have any space to put the data right now.
- */
- if (!ld) {
- len = 0;
- } else {
- /*
- * If ld doesn't have a pointer to a receive_buf function,
- * flush the data, then act like the ld doesn't have any
- * space to put the data right now.
- */
- if (!ld->ops->receive_buf) {
- ch->ch_r_head = ch->ch_r_tail;
- len = 0;
- }
- }
-
- if (len <= 0) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- if (ld)
- tty_ldisc_deref(ld);
- return;
- }
-
- /*
- * The tty layer in the kernel has changed in 2.6.16+.
- *
- * The flip buffers in the tty structure are no longer exposed,
- * and probably will be going away eventually.
- *
- * If we are completely raw, we don't need to go through a lot
- * of the tty layers that exist.
- * In this case, we take the shortest and fastest route we
- * can to relay the data to the user.
- *
- * On the other hand, if we are not raw, we need to go through
- * the new 2.6.16+ tty layer, which has its API more well defined.
- */
- len = tty_buffer_request_room(tp->port, len);
- n = len;
-
- /*
- * n now contains the most amount of data we can copy,
- * bounded either by how much the Linux tty layer can handle,
- * or the amount of data the card actually has pending...
- */
- while (n) {
- s = ((head >= tail) ? head : RQUEUESIZE) - tail;
- s = min(s, n);
-
- if (s <= 0)
- break;
-
- /*
- * If conditions are such that ld needs to see all
- * UART errors, we will have to walk each character
- * and error byte and send them to the buffer one at
- * a time.
- */
- if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) {
- for (i = 0; i < s; i++) {
- if (*(ch->ch_equeue + tail + i) & UART_LSR_BI)
- tty_insert_flip_char(tp->port, *(ch->ch_rqueue + tail + i), TTY_BREAK);
- else if (*(ch->ch_equeue + tail + i) & UART_LSR_PE)
- tty_insert_flip_char(tp->port, *(ch->ch_rqueue + tail + i), TTY_PARITY);
- else if (*(ch->ch_equeue + tail + i) & UART_LSR_FE)
- tty_insert_flip_char(tp->port, *(ch->ch_rqueue + tail + i), TTY_FRAME);
- else
- tty_insert_flip_char(tp->port, *(ch->ch_rqueue + tail + i), TTY_NORMAL);
- }
- } else {
- tty_insert_flip_string(tp->port, ch->ch_rqueue + tail, s);
- }
-
- dgnc_sniff_nowait_nolock(ch, "USER READ", ch->ch_rqueue + tail, s);
-
- tail += s;
- n -= s;
- /* Flip queue if needed */
- tail &= rmask;
- }
-
- ch->ch_r_tail = tail & rmask;
- ch->ch_e_tail = tail & rmask;
- dgnc_check_queue_flow_control(ch);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /* Tell the tty layer its okay to "eat" the data now */
- tty_flip_buffer_push(tp->port);
-
- if (ld)
- tty_ldisc_deref(ld);
-}
-
-
-/************************************************************************
- * Determines when CARRIER changes state and takes appropriate
- * action.
- ************************************************************************/
-void dgnc_carrier(struct channel_t *ch)
-{
- struct dgnc_board *bd;
-
- int virt_carrier = 0;
- int phys_carrier = 0;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
-
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- if (ch->ch_mistat & UART_MSR_DCD)
- phys_carrier = 1;
-
- if (ch->ch_digi.digi_flags & DIGI_FORCEDCD)
- virt_carrier = 1;
-
- if (ch->ch_c_cflag & CLOCAL)
- virt_carrier = 1;
-
- /*
- * Test for a VIRTUAL carrier transition to HIGH.
- */
- if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
-
- /*
- * When carrier rises, wake any threads waiting
- * for carrier in the open routine.
- */
-
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
- }
-
- /*
- * Test for a PHYSICAL carrier transition to HIGH.
- */
- if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
-
- /*
- * When carrier rises, wake any threads waiting
- * for carrier in the open routine.
- */
-
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
- }
-
- /*
- * Test for a PHYSICAL transition to low, so long as we aren't
- * currently ignoring physical transitions (which is what "virtual
- * carrier" indicates).
- *
- * The transition of the virtual carrier to low really doesn't
- * matter... it really only means "ignore carrier state", not
- * "make pretend that carrier is there".
- */
- if ((virt_carrier == 0) && ((ch->ch_flags & CH_CD) != 0) &&
- (phys_carrier == 0)) {
-
- /*
- * When carrier drops:
- *
- * Drop carrier on all open units.
- *
- * Flush queues, waking up any task waiting in the
- * line discipline.
- *
- * Send a hangup to the control terminal.
- *
- * Enable all select calls.
- */
- if (waitqueue_active(&(ch->ch_flags_wait)))
- wake_up_interruptible(&ch->ch_flags_wait);
-
- if (ch->ch_tun.un_open_count > 0)
- tty_hangup(ch->ch_tun.un_tty);
-
- if (ch->ch_pun.un_open_count > 0)
- tty_hangup(ch->ch_pun.un_tty);
- }
-
- /*
- * Make sure that our cached values reflect the current reality.
- */
- if (virt_carrier == 1)
- ch->ch_flags |= CH_FCAR;
- else
- ch->ch_flags &= ~CH_FCAR;
-
- if (phys_carrier == 1)
- ch->ch_flags |= CH_CD;
- else
- ch->ch_flags &= ~CH_CD;
-}
-
-/*
- * Assign the custom baud rate to the channel structure
- */
-static void dgnc_set_custom_speed(struct channel_t *ch, uint newrate)
-{
- int testdiv;
- int testrate_high;
- int testrate_low;
- int deltahigh;
- int deltalow;
-
- if (newrate <= 0) {
- ch->ch_custom_speed = 0;
- return;
- }
-
- /*
- * Since the divisor is stored in a 16-bit integer, we make sure
- * we don't allow any rates smaller than a 16-bit integer would allow.
- * And of course, rates above the dividend won't fly.
- */
- if (newrate && newrate < ((ch->ch_bd->bd_dividend / 0xFFFF) + 1))
- newrate = ((ch->ch_bd->bd_dividend / 0xFFFF) + 1);
-
- if (newrate && newrate > ch->ch_bd->bd_dividend)
- newrate = ch->ch_bd->bd_dividend;
-
- if (newrate > 0) {
- testdiv = ch->ch_bd->bd_dividend / newrate;
-
- /*
- * If we try to figure out what rate the board would use
- * with the test divisor, it will be either equal or higher
- * than the requested baud rate. If we then determine the
- * rate with a divisor one higher, we will get the next lower
- * supported rate below the requested.
- */
- testrate_high = ch->ch_bd->bd_dividend / testdiv;
- testrate_low = ch->ch_bd->bd_dividend / (testdiv + 1);
-
- /*
- * If the rate for the requested divisor is correct, just
- * use it and be done.
- */
- if (testrate_high != newrate) {
- /*
- * Otherwise, pick the rate that is closer (i.e. whichever rate
- * has a smaller delta).
- */
- deltahigh = testrate_high - newrate;
- deltalow = newrate - testrate_low;
-
- if (deltahigh < deltalow)
- newrate = testrate_high;
- else
- newrate = testrate_low;
- }
- }
-
- ch->ch_custom_speed = newrate;
-}
-
-
-void dgnc_check_queue_flow_control(struct channel_t *ch)
-{
- int qleft = 0;
-
- /* Store how much space we have left in the queue */
- qleft = ch->ch_r_tail - ch->ch_r_head - 1;
- if (qleft < 0)
- qleft += RQUEUEMASK + 1;
-
- /*
- * Check to see if we should enforce flow control on our queue because
- * the ld (or user) isn't reading data out of our queue fast enuf.
- *
- * NOTE: This is done based on what the current flow control of the
- * port is set for.
- *
- * 1) HWFLOW (RTS) - Turn off the UART's Receive interrupt.
- * This will cause the UART's FIFO to back up, and force
- * the RTS signal to be dropped.
- * 2) SWFLOW (IXOFF) - Keep trying to send a stop character to
- * the other side, in hopes it will stop sending data to us.
- * 3) NONE - Nothing we can do. We will simply drop any extra data
- * that gets sent into us when the queue fills up.
- */
- if (qleft < 256) {
- /* HWFLOW */
- if (ch->ch_digi.digi_flags & CTSPACE || ch->ch_c_cflag & CRTSCTS) {
- if (!(ch->ch_flags & CH_RECEIVER_OFF)) {
- ch->ch_bd->bd_ops->disable_receiver(ch);
- ch->ch_flags |= (CH_RECEIVER_OFF);
- }
- }
- /* SWFLOW */
- else if (ch->ch_c_iflag & IXOFF) {
- if (ch->ch_stops_sent <= MAX_STOPS_SENT) {
- ch->ch_bd->bd_ops->send_stop_character(ch);
- ch->ch_stops_sent++;
- }
- }
- /* No FLOW */
- else {
- /* Empty... Can't do anything about the impending overflow... */
- }
- }
-
- /*
- * Check to see if we should unenforce flow control because
- * ld (or user) finally read enuf data out of our queue.
- *
- * NOTE: This is done based on what the current flow control of the
- * port is set for.
- *
- * 1) HWFLOW (RTS) - Turn back on the UART's Receive interrupt.
- * This will cause the UART's FIFO to raise RTS back up,
- * which will allow the other side to start sending data again.
- * 2) SWFLOW (IXOFF) - Send a start character to
- * the other side, so it will start sending data to us again.
- * 3) NONE - Do nothing. Since we didn't do anything to turn off the
- * other side, we don't need to do anything now.
- */
- if (qleft > (RQUEUESIZE / 2)) {
- /* HWFLOW */
- if (ch->ch_digi.digi_flags & RTSPACE || ch->ch_c_cflag & CRTSCTS) {
- if (ch->ch_flags & CH_RECEIVER_OFF) {
- ch->ch_bd->bd_ops->enable_receiver(ch);
- ch->ch_flags &= ~(CH_RECEIVER_OFF);
- }
- }
- /* SWFLOW */
- else if (ch->ch_c_iflag & IXOFF && ch->ch_stops_sent) {
- ch->ch_stops_sent = 0;
- ch->ch_bd->bd_ops->send_start_character(ch);
- }
- /* No FLOW */
- else {
- /* Nothing needed. */
- }
- }
-}
-
-
-void dgnc_wakeup_writes(struct channel_t *ch)
-{
- int qlen = 0;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /*
- * If channel now has space, wake up anyone waiting on the condition.
- */
- qlen = ch->ch_w_head - ch->ch_w_tail;
- if (qlen < 0)
- qlen += WQUEUESIZE;
-
- if (qlen >= (WQUEUESIZE - 256)) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- if (ch->ch_tun.un_flags & UN_ISOPEN) {
- if ((ch->ch_tun.un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- ch->ch_tun.un_tty->ldisc->ops->write_wakeup) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- (ch->ch_tun.un_tty->ldisc->ops->write_wakeup)(ch->ch_tun.un_tty);
- spin_lock_irqsave(&ch->ch_lock, flags);
- }
-
- wake_up_interruptible(&ch->ch_tun.un_tty->write_wait);
-
- /*
- * If unit is set to wait until empty, check to make sure
- * the queue AND FIFO are both empty.
- */
- if (ch->ch_tun.un_flags & UN_EMPTY) {
- if ((qlen == 0) && (ch->ch_bd->bd_ops->get_uart_bytes_left(ch) == 0)) {
- ch->ch_tun.un_flags &= ~(UN_EMPTY);
-
- /*
- * If RTS Toggle mode is on, whenever
- * the queue and UART is empty, keep RTS low.
- */
- if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) {
- ch->ch_mostat &= ~(UART_MCR_RTS);
- ch->ch_bd->bd_ops->assert_modem_signals(ch);
- }
-
- /*
- * If DTR Toggle mode is on, whenever
- * the queue and UART is empty, keep DTR low.
- */
- if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) {
- ch->ch_mostat &= ~(UART_MCR_DTR);
- ch->ch_bd->bd_ops->assert_modem_signals(ch);
- }
- }
- }
-
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
-
- if (ch->ch_pun.un_flags & UN_ISOPEN) {
- if ((ch->ch_pun.un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
- ch->ch_pun.un_tty->ldisc->ops->write_wakeup) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- (ch->ch_pun.un_tty->ldisc->ops->write_wakeup)(ch->ch_pun.un_tty);
- spin_lock_irqsave(&ch->ch_lock, flags);
- }
-
- wake_up_interruptible(&ch->ch_pun.un_tty->write_wait);
-
- /*
- * If unit is set to wait until empty, check to make sure
- * the queue AND FIFO are both empty.
- */
- if (ch->ch_pun.un_flags & UN_EMPTY) {
- if ((qlen == 0) && (ch->ch_bd->bd_ops->get_uart_bytes_left(ch) == 0))
- ch->ch_pun.un_flags &= ~(UN_EMPTY);
- }
-
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-
-/************************************************************************
- *
- * TTY Entry points and helper functions
- *
- ************************************************************************/
-
-/*
- * dgnc_tty_open()
- *
- */
-static int dgnc_tty_open(struct tty_struct *tty, struct file *file)
-{
- struct dgnc_board *brd;
- struct channel_t *ch;
- struct un_t *un;
- uint major = 0;
- uint minor = 0;
- int rc = 0;
- unsigned long flags;
-
- rc = 0;
-
- major = MAJOR(tty_devnum(tty));
- minor = MINOR(tty_devnum(tty));
-
- if (major > 255)
- return -ENXIO;
-
- /* Get board pointer from our array of majors we have allocated */
- brd = dgnc_BoardsByMajor[major];
- if (!brd)
- return -ENXIO;
-
- /*
- * If board is not yet up to a state of READY, go to
- * sleep waiting for it to happen or they cancel the open.
- */
- rc = wait_event_interruptible(brd->state_wait,
- (brd->state & BOARD_READY));
-
- if (rc)
- return rc;
-
- spin_lock_irqsave(&brd->bd_lock, flags);
-
- /* If opened device is greater than our number of ports, bail. */
- if (PORT_NUM(minor) > brd->nasync) {
- spin_unlock_irqrestore(&brd->bd_lock, flags);
- return -ENXIO;
- }
-
- ch = brd->channels[PORT_NUM(minor)];
- if (!ch) {
- spin_unlock_irqrestore(&brd->bd_lock, flags);
- return -ENXIO;
- }
-
- /* Drop board lock */
- spin_unlock_irqrestore(&brd->bd_lock, flags);
-
- /* Grab channel lock */
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* Figure out our type */
- if (!IS_PRINT(minor)) {
- un = &brd->channels[PORT_NUM(minor)]->ch_tun;
- un->un_type = DGNC_SERIAL;
- } else if (IS_PRINT(minor)) {
- un = &brd->channels[PORT_NUM(minor)]->ch_pun;
- un->un_type = DGNC_PRINT;
- } else {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return -ENXIO;
- }
-
- /*
- * If the port is still in a previous open, and in a state
- * where we simply cannot safely keep going, wait until the
- * state clears.
- */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- rc = wait_event_interruptible(ch->ch_flags_wait, ((ch->ch_flags & CH_OPENING) == 0));
-
- /* If ret is non-zero, user ctrl-c'ed us */
- if (rc)
- return -EINTR;
-
- /*
- * If either unit is in the middle of the fragile part of close,
- * we just cannot touch the channel safely.
- * Go to sleep, knowing that when the channel can be
- * touched safely, the close routine will signal the
- * ch_flags_wait to wake us back up.
- */
- rc = wait_event_interruptible(ch->ch_flags_wait,
- (((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_CLOSING) == 0));
-
- /* If ret is non-zero, user ctrl-c'ed us */
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
-
- /* Store our unit into driver_data, so we always have it available. */
- tty->driver_data = un;
-
-
- /*
- * Initialize tty's
- */
- if (!(un->un_flags & UN_ISOPEN)) {
- /* Store important variables. */
- un->un_tty = tty;
-
- /* Maybe do something here to the TTY struct as well? */
- }
-
-
- /*
- * Allocate channel buffers for read/write/error.
- * Set flag, so we don't get trounced on.
- */
- ch->ch_flags |= (CH_OPENING);
-
- /* Drop locks, as malloc with GFP_KERNEL can sleep */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (!ch->ch_rqueue)
- ch->ch_rqueue = kzalloc(RQUEUESIZE, GFP_KERNEL);
- if (!ch->ch_equeue)
- ch->ch_equeue = kzalloc(EQUEUESIZE, GFP_KERNEL);
- if (!ch->ch_wqueue)
- ch->ch_wqueue = kzalloc(WQUEUESIZE, GFP_KERNEL);
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_flags &= ~(CH_OPENING);
- wake_up_interruptible(&ch->ch_flags_wait);
-
- /*
- * Initialize if neither terminal or printer is open.
- */
- if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
-
- /*
- * Flush input queues.
- */
- ch->ch_r_head = 0;
- ch->ch_r_tail = 0;
- ch->ch_e_head = 0;
- ch->ch_e_tail = 0;
- ch->ch_w_head = 0;
- ch->ch_w_tail = 0;
-
- brd->bd_ops->flush_uart_write(ch);
- brd->bd_ops->flush_uart_read(ch);
-
- ch->ch_flags = 0;
- ch->ch_cached_lsr = 0;
- ch->ch_stop_sending_break = 0;
- ch->ch_stops_sent = 0;
-
- ch->ch_c_cflag = tty->termios.c_cflag;
- ch->ch_c_iflag = tty->termios.c_iflag;
- ch->ch_c_oflag = tty->termios.c_oflag;
- ch->ch_c_lflag = tty->termios.c_lflag;
- ch->ch_startc = tty->termios.c_cc[VSTART];
- ch->ch_stopc = tty->termios.c_cc[VSTOP];
-
- /*
- * Bring up RTS and DTR...
- * Also handle RTS or DTR toggle if set.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat |= (UART_MCR_RTS);
- if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat |= (UART_MCR_DTR);
-
- /* Tell UART to init itself */
- brd->bd_ops->uart_init(ch);
- }
-
- /*
- * Run param in case we changed anything
- */
- brd->bd_ops->param(tty);
-
- dgnc_carrier(ch);
-
- /*
- * follow protocol for opening port
- */
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- rc = dgnc_block_til_ready(tty, file, ch);
-
- /* No going back now, increment our unit and channel counters */
- spin_lock_irqsave(&ch->ch_lock, flags);
- ch->ch_open_count++;
- un->un_open_count++;
- un->un_flags |= (UN_ISOPEN);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return rc;
-}
-
-
-/*
- * dgnc_block_til_ready()
- *
- * Wait for DCD, if needed.
- */
-static int dgnc_block_til_ready(struct tty_struct *tty, struct file *file, struct channel_t *ch)
-{
- int retval = 0;
- struct un_t *un = NULL;
- unsigned long flags;
- uint old_flags = 0;
- int sleep_on_un_flags = 0;
-
- if (!tty || tty->magic != TTY_MAGIC || !file || !ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENXIO;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return -ENXIO;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_wopen++;
-
- /* Loop forever */
- while (1) {
-
- sleep_on_un_flags = 0;
-
- /*
- * If board has failed somehow during our sleep, bail with error.
- */
- if (ch->ch_bd->state == BOARD_FAILED) {
- retval = -ENXIO;
- break;
- }
-
- /* If tty was hung up, break out of loop and set error. */
- if (tty_hung_up_p(file)) {
- retval = -EAGAIN;
- break;
- }
-
- /*
- * If either unit is in the middle of the fragile part of close,
- * we just cannot touch the channel safely.
- * Go back to sleep, knowing that when the channel can be
- * touched safely, the close routine will signal the
- * ch_wait_flags to wake us back up.
- */
- if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_CLOSING)) {
-
- /*
- * Our conditions to leave cleanly and happily:
- * 1) NONBLOCKING on the tty is set.
- * 2) CLOCAL is set.
- * 3) DCD (fake or real) is active.
- */
-
- if (file->f_flags & O_NONBLOCK)
- break;
-
- if (tty->flags & (1 << TTY_IO_ERROR)) {
- retval = -EIO;
- break;
- }
-
- if (ch->ch_flags & CH_CD)
- break;
-
- if (ch->ch_flags & CH_FCAR)
- break;
- } else {
- sleep_on_un_flags = 1;
- }
-
- /*
- * If there is a signal pending, the user probably
- * interrupted (ctrl-c) us.
- * Leave loop with error set.
- */
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
-
- /*
- * Store the flags before we let go of channel lock
- */
- if (sleep_on_un_flags)
- old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
- else
- old_flags = ch->ch_flags;
-
- /*
- * Let go of channel lock before calling schedule.
- * Our poller will get any FEP events and wake us up when DCD
- * eventually goes active.
- */
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /*
- * Wait for something in the flags to change from the current value.
- */
- if (sleep_on_un_flags)
- retval = wait_event_interruptible(un->un_flags_wait,
- (old_flags != (ch->ch_tun.un_flags | ch->ch_pun.un_flags)));
- else
- retval = wait_event_interruptible(ch->ch_flags_wait,
- (old_flags != ch->ch_flags));
-
- /*
- * We got woken up for some reason.
- * Before looping around, grab our channel lock.
- */
- spin_lock_irqsave(&ch->ch_lock, flags);
- }
-
- ch->ch_wopen--;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (retval)
- return retval;
-
- return 0;
-}
-
-
-/*
- * dgnc_tty_hangup()
- *
- * Hangup the port. Like a close, but don't wait for output to drain.
- */
-static void dgnc_tty_hangup(struct tty_struct *tty)
-{
- struct un_t *un;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- /* flush the transmit queues */
- dgnc_tty_flush_buffer(tty);
-
-}
-
-
-/*
- * dgnc_tty_close()
- *
- */
-static void dgnc_tty_close(struct tty_struct *tty, struct file *file)
-{
- struct ktermios *ts;
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
- int rc = 0;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- ts = &tty->termios;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /*
- * Determine if this is the last close or not - and if we agree about
- * which type of close it is with the Line Discipline
- */
- if ((tty->count == 1) && (un->un_open_count != 1)) {
- /*
- * Uh, oh. tty->count is 1, which means that the tty
- * structure will be freed. un_open_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.
- */
- APR(("tty->count is 1, un open count is %d\n", un->un_open_count));
- un->un_open_count = 1;
- }
-
- if (un->un_open_count)
- un->un_open_count--;
- else
- APR(("bad serial port open count of %d\n", un->un_open_count));
-
- ch->ch_open_count--;
-
- if (ch->ch_open_count && un->un_open_count) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return;
- }
-
- /* OK, its the last close on the unit */
- un->un_flags |= UN_CLOSING;
-
- tty->closing = 1;
-
-
- /*
- * Only officially close channel if count is 0 and
- * DIGI_PRINTER bit is not set.
- */
- if ((ch->ch_open_count == 0) && !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
-
- ch->ch_flags &= ~(CH_STOPI | CH_FORCED_STOPI);
-
- /*
- * turn off print device when closing print device.
- */
- if ((un->un_type == DGNC_PRINT) && (ch->ch_flags & CH_PRON)) {
- dgnc_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- ch->ch_flags &= ~CH_PRON;
- }
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- /* wait for output to drain */
- /* This will also return if we take an interrupt */
-
- rc = bd->bd_ops->drain(tty, 0);
-
- dgnc_tty_flush_buffer(tty);
- tty_ldisc_flush(tty);
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- tty->closing = 0;
-
- /*
- * If we have HUPCL set, lower DTR and RTS
- */
- if (ch->ch_c_cflag & HUPCL) {
-
- /* Drop RTS/DTR */
- ch->ch_mostat &= ~(UART_MCR_DTR | UART_MCR_RTS);
- bd->bd_ops->assert_modem_signals(ch);
-
- /*
- * Go to sleep to ensure RTS/DTR
- * have been dropped for modems to see it.
- */
- if (ch->ch_close_delay) {
- spin_unlock_irqrestore(&ch->ch_lock,
- flags);
- dgnc_ms_sleep(ch->ch_close_delay);
- spin_lock_irqsave(&ch->ch_lock, flags);
- }
- }
-
- ch->ch_old_baud = 0;
-
- /* Turn off UART interrupts for this port */
- ch->ch_bd->bd_ops->uart_off(ch);
- } else {
- /*
- * turn off print device when closing print device.
- */
- if ((un->un_type == DGNC_PRINT) && (ch->ch_flags & CH_PRON)) {
- dgnc_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- ch->ch_flags &= ~CH_PRON;
- }
- }
-
- un->un_tty = NULL;
- un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
-
- wake_up_interruptible(&ch->ch_flags_wait);
- wake_up_interruptible(&un->un_flags_wait);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/*
- * dgnc_tty_chars_in_buffer()
- *
- * Return number of characters that have not been transmitted yet.
- *
- * This routine is used by the line discipline to determine if there
- * is data waiting to be transmitted/drained/flushed or not.
- */
-static int dgnc_tty_chars_in_buffer(struct tty_struct *tty)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
- ushort thead;
- ushort ttail;
- uint tmask;
- uint chars = 0;
- unsigned long flags;
-
- if (tty == NULL)
- return 0;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- tmask = WQUEUEMASK;
- thead = ch->ch_w_head & tmask;
- ttail = ch->ch_w_tail & tmask;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (ttail == thead) {
- chars = 0;
- } else {
- if (thead >= ttail)
- chars = thead - ttail;
- else
- chars = thead - ttail + WQUEUESIZE;
- }
-
- return chars;
-}
-
-
-/*
- * dgnc_maxcps_room
- *
- * Reduces bytes_available to the max number of characters
- * that can be sent currently given the maxcps value, and
- * returns the new bytes_available. This only affects printer
- * output.
- */
-static int dgnc_maxcps_room(struct tty_struct *tty, int bytes_available)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
-
- if (!tty)
- return bytes_available;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return bytes_available;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return bytes_available;
-
- /*
- * If its not the Transparent print device, return
- * the full data amount.
- */
- if (un->un_type != DGNC_PRINT)
- return bytes_available;
-
- if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0) {
- int cps_limit = 0;
- unsigned long current_time = jiffies;
- unsigned long buffer_time = current_time +
- (HZ * ch->ch_digi.digi_bufsize) / ch->ch_digi.digi_maxcps;
-
- if (ch->ch_cpstime < current_time) {
- /* buffer is empty */
- ch->ch_cpstime = current_time; /* reset ch_cpstime */
- cps_limit = ch->ch_digi.digi_bufsize;
- } else if (ch->ch_cpstime < buffer_time) {
- /* still room in the buffer */
- cps_limit = ((buffer_time - ch->ch_cpstime) * ch->ch_digi.digi_maxcps) / HZ;
- } else {
- /* no room in the buffer */
- cps_limit = 0;
- }
-
- bytes_available = min(cps_limit, bytes_available);
- }
-
- return bytes_available;
-}
-
-
-/*
- * dgnc_tty_write_room()
- *
- * Return space available in Tx buffer
- */
-static int dgnc_tty_write_room(struct tty_struct *tty)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
- ushort head;
- ushort tail;
- ushort tmask;
- int ret = 0;
- unsigned long flags;
-
- if (tty == NULL || dgnc_TmpWriteBuf == NULL)
- return 0;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- tmask = WQUEUEMASK;
- head = (ch->ch_w_head) & tmask;
- tail = (ch->ch_w_tail) & tmask;
-
- ret = tail - head - 1;
- if (ret < 0)
- ret += WQUEUESIZE;
-
- /* Limit printer to maxcps */
- ret = dgnc_maxcps_room(tty, ret);
-
- /*
- * If we are printer device, leave space for
- * possibly both the on and off strings.
- */
- if (un->un_type == DGNC_PRINT) {
- if (!(ch->ch_flags & CH_PRON))
- ret -= ch->ch_digi.digi_onlen;
- ret -= ch->ch_digi.digi_offlen;
- } else {
- if (ch->ch_flags & CH_PRON)
- ret -= ch->ch_digi.digi_offlen;
- }
-
- if (ret < 0)
- ret = 0;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return ret;
-}
-
-
-/*
- * dgnc_tty_put_char()
- *
- * Put a character into ch->ch_buf
- *
- * - used by the line discipline for OPOST processing
- */
-static int dgnc_tty_put_char(struct tty_struct *tty, unsigned char c)
-{
- /*
- * Simply call tty_write.
- */
- dgnc_tty_write(tty, &c, 1);
- return 1;
-}
-
-
-/*
- * dgnc_tty_write()
- *
- * Take data from the user or kernel and send it out to the FEP.
- * In here exists all the Transparent Print magic as well.
- */
-static int dgnc_tty_write(struct tty_struct *tty,
- const unsigned char *buf, int count)
-{
- struct channel_t *ch = NULL;
- struct un_t *un = NULL;
- int bufcount = 0, n = 0;
- int orig_count = 0;
- unsigned long flags;
- ushort head;
- ushort tail;
- ushort tmask;
- uint remain;
- int from_user = 0;
-
- if (tty == NULL || dgnc_TmpWriteBuf == NULL)
- return 0;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return 0;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return 0;
-
- if (!count)
- return 0;
-
- /*
- * Store original amount of characters passed in.
- * This helps to figure out if we should ask the FEP
- * to send us an event when it has more space available.
- */
- orig_count = count;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* Get our space available for the channel from the board */
- tmask = WQUEUEMASK;
- head = (ch->ch_w_head) & tmask;
- tail = (ch->ch_w_tail) & tmask;
-
- bufcount = tail - head - 1;
- if (bufcount < 0)
- bufcount += WQUEUESIZE;
-
- /*
- * Limit printer output to maxcps overall, with bursts allowed
- * up to bufsize characters.
- */
- bufcount = dgnc_maxcps_room(tty, bufcount);
-
- /*
- * Take minimum of what the user wants to send, and the
- * space available in the FEP buffer.
- */
- count = min(count, bufcount);
-
- /*
- * Bail if no space left.
- */
- if (count <= 0) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return 0;
- }
-
- /*
- * Output the printer ON string, if we are in terminal mode, but
- * need to be in printer mode.
- */
- if ((un->un_type == DGNC_PRINT) && !(ch->ch_flags & CH_PRON)) {
- dgnc_wmove(ch, ch->ch_digi.digi_onstr,
- (int) ch->ch_digi.digi_onlen);
- head = (ch->ch_w_head) & tmask;
- ch->ch_flags |= CH_PRON;
- }
-
- /*
- * On the other hand, output the printer OFF string, if we are
- * currently in printer mode, but need to output to the terminal.
- */
- if ((un->un_type != DGNC_PRINT) && (ch->ch_flags & CH_PRON)) {
- dgnc_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- head = (ch->ch_w_head) & tmask;
- ch->ch_flags &= ~CH_PRON;
- }
-
- /*
- * If there is nothing left to copy, or I can't handle any more data, leave.
- */
- if (count <= 0) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return 0;
- }
-
- if (from_user) {
-
- count = min(count, WRITEBUFLEN);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /*
- * If data is coming from user space, copy it into a temporary
- * buffer so we don't get swapped out while doing the copy to
- * the board.
- */
- /* we're allowed to block if it's from_user */
- if (down_interruptible(&dgnc_TmpWriteSem))
- return -EINTR;
-
- /*
- * copy_from_user() returns the number
- * of bytes that could *NOT* be copied.
- */
- count -= copy_from_user(dgnc_TmpWriteBuf, (const unsigned char __user *) buf, count);
-
- if (!count) {
- up(&dgnc_TmpWriteSem);
- return -EFAULT;
- }
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- buf = dgnc_TmpWriteBuf;
-
- }
-
- n = count;
-
- /*
- * If the write wraps over the top of the circular buffer,
- * move the portion up to the wrap point, and reset the
- * pointers to the bottom.
- */
- remain = WQUEUESIZE - head;
-
- if (n >= remain) {
- n -= remain;
- memcpy(ch->ch_wqueue + head, buf, remain);
- dgnc_sniff_nowait_nolock(ch, "USER WRITE", ch->ch_wqueue + head, remain);
- head = 0;
- buf += remain;
- }
-
- if (n > 0) {
- /*
- * Move rest of data.
- */
- remain = n;
- memcpy(ch->ch_wqueue + head, buf, remain);
- dgnc_sniff_nowait_nolock(ch, "USER WRITE", ch->ch_wqueue + head, remain);
- head += remain;
- }
-
- if (count) {
- head &= tmask;
- ch->ch_w_head = head;
- }
-
- /* Update printer buffer empty time. */
- if ((un->un_type == DGNC_PRINT) && (ch->ch_digi.digi_maxcps > 0)
- && (ch->ch_digi.digi_bufsize > 0)) {
- ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps;
- }
-
- if (from_user) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- up(&dgnc_TmpWriteSem);
- } else {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- }
-
- if (count) {
- /*
- * Channel lock is grabbed and then released
- * inside this routine.
- */
- ch->ch_bd->bd_ops->copy_data_from_queue_to_uart(ch);
- }
-
- return count;
-}
-
-
-/*
- * Return modem signals to ld.
- */
-
-static int dgnc_tty_tiocmget(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- int result = -EIO;
- unsigned char mstat = 0;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return result;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return result;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return result;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- mstat = (ch->ch_mostat | ch->ch_mistat);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- result = 0;
-
- if (mstat & UART_MCR_DTR)
- result |= TIOCM_DTR;
- if (mstat & UART_MCR_RTS)
- result |= TIOCM_RTS;
- if (mstat & UART_MSR_CTS)
- result |= TIOCM_CTS;
- if (mstat & UART_MSR_DSR)
- result |= TIOCM_DSR;
- if (mstat & UART_MSR_RI)
- result |= TIOCM_RI;
- if (mstat & UART_MSR_DCD)
- result |= TIOCM_CD;
-
- return result;
-}
-
-
-/*
- * dgnc_tty_tiocmset()
- *
- * Set modem signals, called by ld.
- */
-
-static int dgnc_tty_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- int ret = -EIO;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return ret;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return ret;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- if (set & TIOCM_RTS)
- ch->ch_mostat |= UART_MCR_RTS;
-
- if (set & TIOCM_DTR)
- ch->ch_mostat |= UART_MCR_DTR;
-
- if (clear & TIOCM_RTS)
- ch->ch_mostat &= ~(UART_MCR_RTS);
-
- if (clear & TIOCM_DTR)
- ch->ch_mostat &= ~(UART_MCR_DTR);
-
- ch->ch_bd->bd_ops->assert_modem_signals(ch);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-}
-
-
-/*
- * dgnc_tty_send_break()
- *
- * Send a Break, called by ld.
- */
-static int dgnc_tty_send_break(struct tty_struct *tty, int msec)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- int ret = -EIO;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return ret;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return ret;
-
- switch (msec) {
- case -1:
- msec = 0xFFFF;
- break;
- case 0:
- msec = 0;
- break;
- default:
- break;
- }
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_bd->bd_ops->send_break(ch, msec);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-
-}
-
-
-/*
- * dgnc_tty_wait_until_sent()
- *
- * wait until data has been transmitted, called by ld.
- */
-static void dgnc_tty_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- int rc;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- rc = bd->bd_ops->drain(tty, 0);
-}
-
-
-/*
- * dgnc_send_xchar()
- *
- * send a high priority character, called by ld.
- */
-static void dgnc_tty_send_xchar(struct tty_struct *tty, char c)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- dev_dbg(tty->dev, "dgnc_tty_send_xchar start\n");
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- bd->bd_ops->send_immediate_char(ch, c);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- dev_dbg(tty->dev, "dgnc_tty_send_xchar finish\n");
-}
-
-
-
-
-/*
- * Return modem signals to ld.
- */
-static inline int dgnc_get_mstat(struct channel_t *ch)
-{
- unsigned char mstat;
- int result = -EIO;
- unsigned long flags;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENXIO;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- mstat = (ch->ch_mostat | ch->ch_mistat);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- result = 0;
-
- if (mstat & UART_MCR_DTR)
- result |= TIOCM_DTR;
- if (mstat & UART_MCR_RTS)
- result |= TIOCM_RTS;
- if (mstat & UART_MSR_CTS)
- result |= TIOCM_CTS;
- if (mstat & UART_MSR_DSR)
- result |= TIOCM_DSR;
- if (mstat & UART_MSR_RI)
- result |= TIOCM_RI;
- if (mstat & UART_MSR_DCD)
- result |= TIOCM_CD;
-
- return result;
-}
-
-
-
-/*
- * Return modem signals to ld.
- */
-static int dgnc_get_modem_info(struct channel_t *ch, unsigned int __user *value)
-{
- int result;
-
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENXIO;
-
- result = dgnc_get_mstat(ch);
-
- if (result < 0)
- return -ENXIO;
-
- return put_user(result, value);
-}
-
-
-/*
- * dgnc_set_modem_info()
- *
- * Set modem signals, called by ld.
- */
-static int dgnc_set_modem_info(struct tty_struct *tty, unsigned int command, unsigned int __user *value)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- int ret = -ENXIO;
- unsigned int arg = 0;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return ret;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return ret;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return ret;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return ret;
-
- ret = 0;
-
- ret = get_user(arg, value);
- if (ret)
- return ret;
-
- switch (command) {
- case TIOCMBIS:
- if (arg & TIOCM_RTS)
- ch->ch_mostat |= UART_MCR_RTS;
-
- if (arg & TIOCM_DTR)
- ch->ch_mostat |= UART_MCR_DTR;
-
- break;
-
- case TIOCMBIC:
- if (arg & TIOCM_RTS)
- ch->ch_mostat &= ~(UART_MCR_RTS);
-
- if (arg & TIOCM_DTR)
- ch->ch_mostat &= ~(UART_MCR_DTR);
-
- break;
-
- case TIOCMSET:
-
- if (arg & TIOCM_RTS)
- ch->ch_mostat |= UART_MCR_RTS;
- else
- ch->ch_mostat &= ~(UART_MCR_RTS);
-
- if (arg & TIOCM_DTR)
- ch->ch_mostat |= UART_MCR_DTR;
- else
- ch->ch_mostat &= ~(UART_MCR_DTR);
-
- break;
-
- default:
- return -EINVAL;
- }
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_bd->bd_ops->assert_modem_signals(ch);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-}
-
-
-/*
- * dgnc_tty_digigeta()
- *
- * Ioctl to get the information for ditty.
- *
- *
- *
- */
-static int dgnc_tty_digigeta(struct tty_struct *tty, struct digi_t __user *retinfo)
-{
- struct channel_t *ch;
- struct un_t *un;
- struct digi_t tmp;
- unsigned long flags;
-
- if (!retinfo)
- return -EFAULT;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EFAULT;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return -EFAULT;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -EFAULT;
-
- memset(&tmp, 0, sizeof(tmp));
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- memcpy(&tmp, &ch->ch_digi, sizeof(tmp));
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
- return -EFAULT;
-
- return 0;
-}
-
-
-/*
- * dgnc_tty_digiseta()
- *
- * Ioctl to set the information for ditty.
- *
- *
- *
- */
-static int dgnc_tty_digiseta(struct tty_struct *tty, struct digi_t __user *new_info)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- struct digi_t new_digi;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -EFAULT;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return -EFAULT;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -EFAULT;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return -EFAULT;
-
- if (copy_from_user(&new_digi, new_info, sizeof(new_digi)))
- return -EFAULT;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /*
- * Handle transistions to and from RTS Toggle.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) && (new_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat &= ~(UART_MCR_RTS);
- if ((ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE) && !(new_digi.digi_flags & DIGI_RTS_TOGGLE))
- ch->ch_mostat |= (UART_MCR_RTS);
-
- /*
- * Handle transistions to and from DTR Toggle.
- */
- if (!(ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) && (new_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat &= ~(UART_MCR_DTR);
- if ((ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE) && !(new_digi.digi_flags & DIGI_DTR_TOGGLE))
- ch->ch_mostat |= (UART_MCR_DTR);
-
- memcpy(&ch->ch_digi, &new_digi, sizeof(new_digi));
-
- if (ch->ch_digi.digi_maxcps < 1)
- ch->ch_digi.digi_maxcps = 1;
-
- if (ch->ch_digi.digi_maxcps > 10000)
- ch->ch_digi.digi_maxcps = 10000;
-
- if (ch->ch_digi.digi_bufsize < 10)
- ch->ch_digi.digi_bufsize = 10;
-
- if (ch->ch_digi.digi_maxchar < 1)
- ch->ch_digi.digi_maxchar = 1;
-
- if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize)
- ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize;
-
- if (ch->ch_digi.digi_onlen > DIGI_PLEN)
- ch->ch_digi.digi_onlen = DIGI_PLEN;
-
- if (ch->ch_digi.digi_offlen > DIGI_PLEN)
- ch->ch_digi.digi_offlen = DIGI_PLEN;
-
- ch->ch_bd->bd_ops->param(tty);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-}
-
-
-/*
- * dgnc_set_termios()
- */
-static void dgnc_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_c_cflag = tty->termios.c_cflag;
- ch->ch_c_iflag = tty->termios.c_iflag;
- ch->ch_c_oflag = tty->termios.c_oflag;
- ch->ch_c_lflag = tty->termios.c_lflag;
- ch->ch_startc = tty->termios.c_cc[VSTART];
- ch->ch_stopc = tty->termios.c_cc[VSTOP];
-
- ch->ch_bd->bd_ops->param(tty);
- dgnc_carrier(ch);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-static void dgnc_tty_throttle(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_flags |= (CH_FORCED_STOPI);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-static void dgnc_tty_unthrottle(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_flags &= ~(CH_FORCED_STOPI);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-static void dgnc_tty_start(struct tty_struct *tty)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_flags &= ~(CH_FORCED_STOP);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-static void dgnc_tty_stop(struct tty_struct *tty)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_flags |= (CH_FORCED_STOP);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-/*
- * dgnc_tty_flush_chars()
- *
- * Flush the cook buffer
- *
- * Note to self, and any other poor souls who venture here:
- *
- * flush in this case DOES NOT mean dispose of the data.
- * instead, it means "stop buffering and send it if you
- * haven't already." Just guess how I figured that out... SRW 2-Jun-98
- *
- * It is also always called in interrupt context - JAR 8-Sept-99
- */
-static void dgnc_tty_flush_chars(struct tty_struct *tty)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* Do something maybe here */
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-
-/*
- * dgnc_tty_flush_buffer()
- *
- * Flush Tx buffer (make in == out)
- */
-static void dgnc_tty_flush_buffer(struct tty_struct *tty)
-{
- struct channel_t *ch;
- struct un_t *un;
- unsigned long flags;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_flags &= ~CH_STOP;
-
- /* Flush our write queue */
- ch->ch_w_head = ch->ch_w_tail;
-
- /* Flush UARTs transmit FIFO */
- ch->ch_bd->bd_ops->flush_uart_write(ch);
-
- if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
- if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-}
-
-
-
-/*****************************************************************************
- *
- * The IOCTL function and all of its helpers
- *
- *****************************************************************************/
-
-/*
- * dgnc_tty_ioctl()
- *
- * The usual assortment of ioctl's
- */
-static int dgnc_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
- unsigned long arg)
-{
- struct dgnc_board *bd;
- struct channel_t *ch;
- struct un_t *un;
- int rc;
- unsigned long flags;
- void __user *uarg = (void __user *) arg;
-
- if (!tty || tty->magic != TTY_MAGIC)
- return -ENODEV;
-
- un = tty->driver_data;
- if (!un || un->magic != DGNC_UNIT_MAGIC)
- return -ENODEV;
-
- ch = un->un_ch;
- if (!ch || ch->magic != DGNC_CHANNEL_MAGIC)
- return -ENODEV;
-
- bd = ch->ch_bd;
- if (!bd || bd->magic != DGNC_BOARD_MAGIC)
- return -ENODEV;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- if (un->un_open_count <= 0) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return -EIO;
- }
-
- switch (cmd) {
-
- /* Here are all the standard ioctl's that we MUST implement */
-
- case TCSBRK:
- /*
- * TCSBRK is SVID version: non-zero arg --> no break
- * this behaviour is exploited by tcdrain().
- *
- * According to POSIX.1 spec (7.2.2.1.2) breaks should be
- * between 0.25 and 0.5 seconds so we'll ask for something
- * in the middle: 0.375 seconds.
- */
- rc = tty_check_change(tty);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- if (rc)
- return rc;
-
- rc = ch->ch_bd->bd_ops->drain(tty, 0);
-
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- if (((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP))
- ch->ch_bd->bd_ops->send_break(ch, 250);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-
-
- case TCSBRKP:
- /* support for POSIX tcsendbreak()
- * According to POSIX.1 spec (7.2.2.1.2) breaks should be
- * between 0.25 and 0.5 seconds so we'll ask for something
- * in the middle: 0.375 seconds.
- */
- rc = tty_check_change(tty);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- if (rc)
- return rc;
-
- rc = ch->ch_bd->bd_ops->drain(tty, 0);
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_bd->bd_ops->send_break(ch, 250);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-
- case TIOCSBRK:
- rc = tty_check_change(tty);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- if (rc)
- return rc;
-
- rc = ch->ch_bd->bd_ops->drain(tty, 0);
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- ch->ch_bd->bd_ops->send_break(ch, 250);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-
- case TIOCCBRK:
- /* Do Nothing */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return 0;
-
- case TIOCGSOFTCAR:
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- rc = put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) arg);
- return rc;
-
- case TIOCSSOFTCAR:
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = get_user(arg, (unsigned long __user *) arg);
- if (rc)
- return rc;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
- ch->ch_bd->bd_ops->param(tty);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return 0;
-
- case TIOCMGET:
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return dgnc_get_modem_info(ch, uarg);
-
- case TIOCMBIS:
- case TIOCMBIC:
- case TIOCMSET:
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return dgnc_set_modem_info(tty, cmd, uarg);
-
- /*
- * Here are any additional ioctl's that we want to implement
- */
-
- case TCFLSH:
- /*
- * The linux tty driver doesn't have a flush
- * input routine for the driver, assuming all backed
- * up data is in the line disc. buffers. However,
- * we all know that's not the case. Here, we
- * act on the ioctl, but then lie and say we didn't
- * so the line discipline will process the flush
- * also.
- */
- rc = tty_check_change(tty);
- if (rc) {
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return rc;
- }
-
- if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) {
- ch->ch_r_head = ch->ch_r_tail;
- ch->ch_bd->bd_ops->flush_uart_read(ch);
- /* Force queue flow control to be released, if needed */
- dgnc_check_queue_flow_control(ch);
- }
-
- if ((arg == TCOFLUSH) || (arg == TCIOFLUSH)) {
- if (!(un->un_type == DGNC_PRINT)) {
- ch->ch_w_head = ch->ch_w_tail;
- ch->ch_bd->bd_ops->flush_uart_write(ch);
-
- if (ch->ch_tun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_tun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_tun.un_flags_wait);
- }
-
- if (ch->ch_pun.un_flags & (UN_LOW|UN_EMPTY)) {
- ch->ch_pun.un_flags &= ~(UN_LOW|UN_EMPTY);
- wake_up_interruptible(&ch->ch_pun.un_flags_wait);
- }
-
- }
- }
-
- /* pretend we didn't recognize this IOCTL */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return -ENOIOCTLCMD;
- case TCSETSF:
- case TCSETSW:
- /*
- * The linux tty driver doesn't have a flush
- * input routine for the driver, assuming all backed
- * up data is in the line disc. buffers. However,
- * we all know that's not the case. Here, we
- * act on the ioctl, but then lie and say we didn't
- * so the line discipline will process the flush
- * also.
- */
- if (cmd == TCSETSF) {
- /* flush rx */
- ch->ch_flags &= ~CH_STOP;
- ch->ch_r_head = ch->ch_r_tail;
- ch->ch_bd->bd_ops->flush_uart_read(ch);
- /* Force queue flow control to be released, if needed */
- dgnc_check_queue_flow_control(ch);
- }
-
- /* now wait for all the output to drain */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = ch->ch_bd->bd_ops->drain(tty, 0);
- if (rc)
- return -EINTR;
-
- /* pretend we didn't recognize this */
- return -ENOIOCTLCMD;
-
- case TCSETAW:
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = ch->ch_bd->bd_ops->drain(tty, 0);
- if (rc)
- return -EINTR;
-
- /* pretend we didn't recognize this */
- return -ENOIOCTLCMD;
-
- case TCXONC:
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- /* Make the ld do it */
- return -ENOIOCTLCMD;
-
- case DIGI_GETA:
- /* get information for ditty */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return dgnc_tty_digigeta(tty, uarg);
-
- case DIGI_SETAW:
- case DIGI_SETAF:
-
- /* set information for ditty */
- if (cmd == (DIGI_SETAW)) {
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = ch->ch_bd->bd_ops->drain(tty, 0);
-
- if (rc)
- return -EINTR;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
- } else {
- tty_ldisc_flush(tty);
- }
- /* fall thru */
-
- case DIGI_SETA:
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return dgnc_tty_digiseta(tty, uarg);
-
- case DIGI_LOOPBACK:
- {
- uint loopback = 0;
- /* Let go of locks when accessing user space, could sleep */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = get_user(loopback, (unsigned int __user *) arg);
- if (rc)
- return rc;
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /* Enable/disable internal loopback for this port */
- if (loopback)
- ch->ch_flags |= CH_LOOPBACK;
- else
- ch->ch_flags &= ~(CH_LOOPBACK);
-
- ch->ch_bd->bd_ops->param(tty);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return 0;
- }
-
- case DIGI_GETCUSTOMBAUD:
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = put_user(ch->ch_custom_speed, (unsigned int __user *) arg);
- return rc;
-
- case DIGI_SETCUSTOMBAUD:
- {
- int new_rate;
- /* Let go of locks when accessing user space, could sleep */
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = get_user(new_rate, (int __user *) arg);
- if (rc)
- return rc;
- spin_lock_irqsave(&ch->ch_lock, flags);
- dgnc_set_custom_speed(ch, new_rate);
- ch->ch_bd->bd_ops->param(tty);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return 0;
- }
-
- /*
- * This ioctl allows insertion of a character into the front
- * of any pending data to be transmitted.
- *
- * This ioctl is to satify the "Send Character Immediate"
- * call that the RealPort protocol spec requires.
- */
- case DIGI_REALPORT_SENDIMMEDIATE:
- {
- unsigned char c;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = get_user(c, (unsigned char __user *) arg);
- if (rc)
- return rc;
- spin_lock_irqsave(&ch->ch_lock, flags);
- ch->ch_bd->bd_ops->send_immediate_char(ch, c);
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- return 0;
- }
-
- /*
- * This ioctl returns all the current counts for the port.
- *
- * This ioctl is to satify the "Line Error Counters"
- * call that the RealPort protocol spec requires.
- */
- case DIGI_REALPORT_GETCOUNTERS:
- {
- struct digi_getcounter buf;
-
- buf.norun = ch->ch_err_overrun;
- buf.noflow = 0; /* The driver doesn't keep this stat */
- buf.nframe = ch->ch_err_frame;
- buf.nparity = ch->ch_err_parity;
- buf.nbreak = ch->ch_err_break;
- buf.rbytes = ch->ch_rxcount;
- buf.tbytes = ch->ch_txcount;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (copy_to_user(uarg, &buf, sizeof(buf)))
- return -EFAULT;
-
- return 0;
- }
-
- /*
- * This ioctl returns all current events.
- *
- * This ioctl is to satify the "Event Reporting"
- * call that the RealPort protocol spec requires.
- */
- case DIGI_REALPORT_GETEVENTS:
- {
- unsigned int events = 0;
-
- /* NOTE: MORE EVENTS NEEDS TO BE ADDED HERE */
- if (ch->ch_flags & CH_BREAK_SENDING)
- events |= EV_TXB;
- if ((ch->ch_flags & CH_STOP) || (ch->ch_flags & CH_FORCED_STOP))
- events |= (EV_OPU | EV_OPS);
-
- if ((ch->ch_flags & CH_STOPI) || (ch->ch_flags & CH_FORCED_STOPI))
- events |= (EV_IPU | EV_IPS);
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
- rc = put_user(events, (unsigned int __user *) arg);
- return rc;
- }
-
- /*
- * This ioctl returns TOUT and TIN counters based
- * upon the values passed in by the RealPort Server.
- * It also passes back whether the UART Transmitter is
- * empty as well.
- */
- case DIGI_REALPORT_GETBUFFERS:
- {
- struct digi_getbuffer buf;
- int tdist;
- int count;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- /*
- * Get data from user first.
- */
- if (copy_from_user(&buf, uarg, sizeof(buf)))
- return -EFAULT;
-
- spin_lock_irqsave(&ch->ch_lock, flags);
-
- /*
- * Figure out how much data is in our RX and TX queues.
- */
- buf.rxbuf = (ch->ch_r_head - ch->ch_r_tail) & RQUEUEMASK;
- buf.txbuf = (ch->ch_w_head - ch->ch_w_tail) & WQUEUEMASK;
-
- /*
- * Is the UART empty? Add that value to whats in our TX queue.
- */
- count = buf.txbuf + ch->ch_bd->bd_ops->get_uart_bytes_left(ch);
-
- /*
- * Figure out how much data the RealPort Server believes should
- * be in our TX queue.
- */
- tdist = (buf.tIn - buf.tOut) & 0xffff;
-
- /*
- * If we have more data than the RealPort Server believes we
- * should have, reduce our count to its amount.
- *
- * This count difference CAN happen because the Linux LD can
- * insert more characters into our queue for OPOST processing
- * that the RealPort Server doesn't know about.
- */
- if (buf.txbuf > tdist)
- buf.txbuf = tdist;
-
- /*
- * Report whether our queue and UART TX are completely empty.
- */
- if (count)
- buf.txdone = 0;
- else
- buf.txdone = 1;
-
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- if (copy_to_user(uarg, &buf, sizeof(buf)))
- return -EFAULT;
-
- return 0;
- }
- default:
- spin_unlock_irqrestore(&ch->ch_lock, flags);
-
- return -ENOIOCTLCMD;
- }
-}
diff --git a/drivers/staging/dgnc/dgnc_tty.h b/drivers/staging/dgnc/dgnc_tty.h
deleted file mode 100644
index 58eef25..0000000
--- a/drivers/staging/dgnc/dgnc_tty.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-#ifndef __DGNC_TTY_H
-#define __DGNC_TTY_H
-
-#include "dgnc_driver.h"
-
-int dgnc_tty_register(struct dgnc_board *brd);
-
-int dgnc_tty_preinit(void);
-int dgnc_tty_init(struct dgnc_board *);
-
-void dgnc_tty_post_uninit(void);
-void dgnc_tty_uninit(struct dgnc_board *);
-
-void dgnc_input(struct channel_t *ch);
-void dgnc_carrier(struct channel_t *ch);
-void dgnc_wakeup_writes(struct channel_t *ch);
-void dgnc_check_queue_flow_control(struct channel_t *ch);
-
-void dgnc_sniff_nowait_nolock(struct channel_t *ch, unsigned char *text, unsigned char *buf, int nbuf);
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_types.h b/drivers/staging/dgnc/dgnc_types.h
deleted file mode 100644
index 3aafced..0000000
--- a/drivers/staging/dgnc/dgnc_types.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-#ifndef __DGNC_TYPES_H
-#define __DGNC_TYPES_H
-
-#ifndef TRUE
-# define TRUE 1
-#endif
-
-#ifndef FALSE
-# define FALSE 0
-#endif
-
-#endif
diff --git a/drivers/staging/dgnc/dgnc_utils.c b/drivers/staging/dgnc/dgnc_utils.c
deleted file mode 100644
index 61efc13..0000000
--- a/drivers/staging/dgnc/dgnc_utils.c
+++ /dev/null
@@ -1,70 +0,0 @@
-#include <linux/tty.h>
-#include <linux/sched.h>
-#include "dgnc_utils.h"
-#include "digi.h"
-
-/*
- * dgnc_ms_sleep()
- *
- * Put the driver to sleep for x ms's
- *
- * Returns 0 if timed out, !0 (showing signal) if interrupted by a signal.
- */
-int dgnc_ms_sleep(ulong ms)
-{
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout((ms * HZ) / 1000);
- return signal_pending(current);
-}
-
-/*
- * dgnc_ioctl_name() : Returns a text version of each ioctl value.
- */
-char *dgnc_ioctl_name(int cmd)
-{
- switch (cmd) {
-
- case TCGETA: return "TCGETA";
- case TCGETS: return "TCGETS";
- case TCSETA: return "TCSETA";
- case TCSETS: return "TCSETS";
- case TCSETAW: return "TCSETAW";
- case TCSETSW: return "TCSETSW";
- case TCSETAF: return "TCSETAF";
- case TCSETSF: return "TCSETSF";
- case TCSBRK: return "TCSBRK";
- case TCXONC: return "TCXONC";
- case TCFLSH: return "TCFLSH";
- case TIOCGSID: return "TIOCGSID";
-
- case TIOCGETD: return "TIOCGETD";
- case TIOCSETD: return "TIOCSETD";
- case TIOCGWINSZ: return "TIOCGWINSZ";
- case TIOCSWINSZ: return "TIOCSWINSZ";
-
- case TIOCMGET: return "TIOCMGET";
- case TIOCMSET: return "TIOCMSET";
- case TIOCMBIS: return "TIOCMBIS";
- case TIOCMBIC: return "TIOCMBIC";
-
- /* from digi.h */
- case DIGI_SETA: return "DIGI_SETA";
- case DIGI_SETAW: return "DIGI_SETAW";
- case DIGI_SETAF: return "DIGI_SETAF";
- case DIGI_SETFLOW: return "DIGI_SETFLOW";
- case DIGI_SETAFLOW: return "DIGI_SETAFLOW";
- case DIGI_GETFLOW: return "DIGI_GETFLOW";
- case DIGI_GETAFLOW: return "DIGI_GETAFLOW";
- case DIGI_GETA: return "DIGI_GETA";
- case DIGI_GEDELAY: return "DIGI_GEDELAY";
- case DIGI_SEDELAY: return "DIGI_SEDELAY";
- case DIGI_GETCUSTOMBAUD: return "DIGI_GETCUSTOMBAUD";
- case DIGI_SETCUSTOMBAUD: return "DIGI_SETCUSTOMBAUD";
- case TIOCMODG: return "TIOCMODG";
- case TIOCMODS: return "TIOCMODS";
- case TIOCSDTR: return "TIOCSDTR";
- case TIOCCDTR: return "TIOCCDTR";
-
- default: return "unknown";
- }
-}
diff --git a/drivers/staging/dgnc/dgnc_utils.h b/drivers/staging/dgnc/dgnc_utils.h
deleted file mode 100644
index cebf601..0000000
--- a/drivers/staging/dgnc/dgnc_utils.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef __DGNC_UTILS_H
-#define __DGNC_UTILS_H
-
-int dgnc_ms_sleep(ulong ms);
-char *dgnc_ioctl_name(int cmd);
-
-#endif
diff --git a/drivers/staging/dgnc/digi.h b/drivers/staging/dgnc/digi.h
deleted file mode 100644
index 3181a35..0000000
--- a/drivers/staging/dgnc/digi.h
+++ /dev/null
@@ -1,415 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-#ifndef __DIGI_H
-#define __DIGI_H
-
-/************************************************************************
- *** Definitions for Digi ditty(1) command.
- ************************************************************************/
-
-
-/*
- * Copyright (c) 1988-96 Digi International Inc., All Rights Reserved.
- */
-
-/************************************************************************
- * This module provides application access to special Digi
- * serial line enhancements which are not standard UNIX(tm) features.
- ************************************************************************/
-
-#if !defined(TIOCMODG)
-
-#define TIOCMODG ('d'<<8) | 250 /* get modem ctrl state */
-#define TIOCMODS ('d'<<8) | 251 /* set modem ctrl state */
-
-#ifndef TIOCM_LE
-#define TIOCM_LE 0x01 /* line enable */
-#define TIOCM_DTR 0x02 /* data terminal ready */
-#define TIOCM_RTS 0x04 /* request to send */
-#define TIOCM_ST 0x08 /* secondary transmit */
-#define TIOCM_SR 0x10 /* secondary receive */
-#define TIOCM_CTS 0x20 /* clear to send */
-#define TIOCM_CAR 0x40 /* carrier detect */
-#define TIOCM_RNG 0x80 /* ring indicator */
-#define TIOCM_DSR 0x100 /* data set ready */
-#define TIOCM_RI TIOCM_RNG /* ring (alternate) */
-#define TIOCM_CD TIOCM_CAR /* carrier detect (alt) */
-#endif
-
-#endif
-
-#if !defined(TIOCMSET)
-#define TIOCMSET ('d'<<8) | 252 /* set modem ctrl state */
-#define TIOCMGET ('d'<<8) | 253 /* set modem ctrl state */
-#endif
-
-#if !defined(TIOCMBIC)
-#define TIOCMBIC ('d'<<8) | 254 /* set modem ctrl state */
-#define TIOCMBIS ('d'<<8) | 255 /* set modem ctrl state */
-#endif
-
-
-#if !defined(TIOCSDTR)
-#define TIOCSDTR ('e'<<8) | 0 /* set DTR */
-#define TIOCCDTR ('e'<<8) | 1 /* clear DTR */
-#endif
-
-/************************************************************************
- * Ioctl command arguments for DIGI parameters.
- ************************************************************************/
-#define DIGI_GETA ('e'<<8) | 94 /* Read params */
-
-#define DIGI_SETA ('e'<<8) | 95 /* Set params */
-#define DIGI_SETAW ('e'<<8) | 96 /* Drain & set params */
-#define DIGI_SETAF ('e'<<8) | 97 /* Drain, flush & set params */
-
-#define DIGI_KME ('e'<<8) | 98 /* Read/Write Host */
- /* Adapter Memory */
-
-#define DIGI_GETFLOW ('e'<<8) | 99 /* Get startc/stopc flow */
- /* control characters */
-#define DIGI_SETFLOW ('e'<<8) | 100 /* Set startc/stopc flow */
- /* control characters */
-#define DIGI_GETAFLOW ('e'<<8) | 101 /* Get Aux. startc/stopc */
- /* flow control chars */
-#define DIGI_SETAFLOW ('e'<<8) | 102 /* Set Aux. startc/stopc */
- /* flow control chars */
-
-#define DIGI_GEDELAY ('d'<<8) | 246 /* Get edelay */
-#define DIGI_SEDELAY ('d'<<8) | 247 /* Set edelay */
-
-struct digiflow_t {
- unsigned char startc; /* flow cntl start char */
- unsigned char stopc; /* flow cntl stop char */
-};
-
-
-#ifdef FLOW_2200
-#define F2200_GETA ('e'<<8) | 104 /* Get 2x36 flow cntl flags */
-#define F2200_SETAW ('e'<<8) | 105 /* Set 2x36 flow cntl flags */
-#define F2200_MASK 0x03 /* 2200 flow cntl bit mask */
-#define FCNTL_2200 0x01 /* 2x36 terminal flow cntl */
-#define PCNTL_2200 0x02 /* 2x36 printer flow cntl */
-#define F2200_XON 0xf8
-#define P2200_XON 0xf9
-#define F2200_XOFF 0xfa
-#define P2200_XOFF 0xfb
-
-#define FXOFF_MASK 0x03 /* 2200 flow status mask */
-#define RCVD_FXOFF 0x01 /* 2x36 Terminal XOFF rcvd */
-#define RCVD_PXOFF 0x02 /* 2x36 Printer XOFF rcvd */
-#endif
-
-/************************************************************************
- * Values for digi_flags
- ************************************************************************/
-#define DIGI_IXON 0x0001 /* Handle IXON in the FEP */
-#define DIGI_FAST 0x0002 /* Fast baud rates */
-#define RTSPACE 0x0004 /* RTS input flow control */
-#define CTSPACE 0x0008 /* CTS output flow control */
-#define DSRPACE 0x0010 /* DSR output flow control */
-#define DCDPACE 0x0020 /* DCD output flow control */
-#define DTRPACE 0x0040 /* DTR input flow control */
-#define DIGI_COOK 0x0080 /* Cooked processing done in FEP */
-#define DIGI_FORCEDCD 0x0100 /* Force carrier */
-#define DIGI_ALTPIN 0x0200 /* Alternate RJ-45 pin config */
-#define DIGI_AIXON 0x0400 /* Aux flow control in fep */
-#define DIGI_PRINTER 0x0800 /* Hold port open for flow cntrl*/
-#define DIGI_PP_INPUT 0x1000 /* Change parallel port to input*/
-#define DIGI_DTR_TOGGLE 0x2000 /* Support DTR Toggle */
-#define DIGI_422 0x4000 /* for 422/232 selectable panel */
-#define DIGI_RTS_TOGGLE 0x8000 /* Support RTS Toggle */
-
-/************************************************************************
- * These options are not supported on the comxi.
- ************************************************************************/
-#define DIGI_COMXI (DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
-
-#define DIGI_PLEN 28 /* String length */
-#define DIGI_TSIZ 10 /* Terminal string len */
-
-/************************************************************************
- * Structure used with ioctl commands for DIGI parameters.
- ************************************************************************/
-struct digi_t {
- unsigned short digi_flags; /* Flags (see above) */
- unsigned short digi_maxcps; /* Max printer CPS */
- unsigned short digi_maxchar; /* Max chars in print queue */
- unsigned short digi_bufsize; /* Buffer size */
- unsigned char digi_onlen; /* Length of ON string */
- unsigned char digi_offlen; /* Length of OFF string */
- char digi_onstr[DIGI_PLEN]; /* Printer on string */
- char digi_offstr[DIGI_PLEN]; /* Printer off string */
- char digi_term[DIGI_TSIZ]; /* terminal string */
-};
-
-/************************************************************************
- * KME definitions and structures.
- ************************************************************************/
-#define RW_IDLE 0 /* Operation complete */
-#define RW_READ 1 /* Read Concentrator Memory */
-#define RW_WRITE 2 /* Write Concentrator Memory */
-
-struct rw_t {
- unsigned char rw_req; /* Request type */
- unsigned char rw_board; /* Host Adapter board number */
- unsigned char rw_conc; /* Concentrator number */
- unsigned char rw_reserved; /* Reserved for expansion */
- unsigned int rw_addr; /* Address in concentrator */
- unsigned short rw_size; /* Read/write request length */
- unsigned char rw_data[128]; /* Data to read/write */
-};
-
-/***********************************************************************
- * Shrink Buffer and Board Information definitions and structures.
-
- ************************************************************************/
- /* Board type return codes */
-#define PCXI_TYPE 1 /* Board type at the designated port is a PC/Xi */
-#define PCXM_TYPE 2 /* Board type at the designated port is a PC/Xm */
-#define PCXE_TYPE 3 /* Board type at the designated port is a PC/Xe */
-#define MCXI_TYPE 4 /* Board type at the designated port is a MC/Xi */
-#define COMXI_TYPE 5 /* Board type at the designated port is a COM/Xi */
-
- /* Non-Zero Result codes. */
-#define RESULT_NOBDFND 1 /* A Digi product at that port is not config installed */
-#define RESULT_NODESCT 2 /* A memory descriptor was not obtainable */
-#define RESULT_NOOSSIG 3 /* FEP/OS signature was not detected on the board */
-#define RESULT_TOOSML 4 /* Too small an area to shrink. */
-#define RESULT_NOCHAN 5 /* Channel structure for the board was not found */
-
-struct shrink_buf_struct {
- unsigned int shrink_buf_vaddr; /* Virtual address of board */
- unsigned int shrink_buf_phys; /* Physical address of board */
- unsigned int shrink_buf_bseg; /* Amount of board memory */
- unsigned int shrink_buf_hseg; /* '186 Beginning of Dual-Port */
-
- unsigned int shrink_buf_lseg; /* '186 Beginning of freed memory */
- unsigned int shrink_buf_mseg; /* Linear address from start of
- dual-port were freed memory
- begins, host viewpoint. */
-
- unsigned int shrink_buf_bdparam; /* Parameter for xxmemon and
- xxmemoff */
-
- unsigned int shrink_buf_reserva; /* Reserved */
- unsigned int shrink_buf_reservb; /* Reserved */
- unsigned int shrink_buf_reservc; /* Reserved */
- unsigned int shrink_buf_reservd; /* Reserved */
-
- unsigned char shrink_buf_result; /* Reason for call failing
- Zero is Good return */
- unsigned char shrink_buf_init; /* Non-Zero if it caused an
- xxinit call. */
-
- unsigned char shrink_buf_anports; /* Number of async ports */
- unsigned char shrink_buf_snports; /* Number of sync ports */
- unsigned char shrink_buf_type; /* Board type 1 = PC/Xi,
- 2 = PC/Xm,
- 3 = PC/Xe
- 4 = MC/Xi
- 5 = COMX/i */
- unsigned char shrink_buf_card; /* Card number */
-
-};
-
-/************************************************************************
- * Structure to get driver status information
- ************************************************************************/
-struct digi_dinfo {
- unsigned int dinfo_nboards; /* # boards configured */
- char dinfo_reserved[12]; /* for future expansion */
- char dinfo_version[16]; /* driver version */
-};
-
-#define DIGI_GETDD ('d'<<8) | 248 /* get driver info */
-
-/************************************************************************
- * Structure used with ioctl commands for per-board information
- *
- * physsize and memsize differ when board has "windowed" memory
- ************************************************************************/
-struct digi_info {
- unsigned int info_bdnum; /* Board number (0 based) */
- unsigned int info_ioport; /* io port address */
- unsigned int info_physaddr; /* memory address */
- unsigned int info_physsize; /* Size of host mem window */
- unsigned int info_memsize; /* Amount of dual-port mem */
- /* on board */
- unsigned short info_bdtype; /* Board type */
- unsigned short info_nports; /* number of ports */
- char info_bdstate; /* board state */
- char info_reserved[7]; /* for future expansion */
-};
-
-#define DIGI_GETBD ('d'<<8) | 249 /* get board info */
-
-struct digi_stat {
- unsigned int info_chan; /* Channel number (0 based) */
- unsigned int info_brd; /* Board number (0 based) */
- unsigned int info_cflag; /* cflag for channel */
- unsigned int info_iflag; /* iflag for channel */
- unsigned int info_oflag; /* oflag for channel */
- unsigned int info_mstat; /* mstat for channel */
- unsigned int info_tx_data; /* tx_data for channel */
- unsigned int info_rx_data; /* rx_data for channel */
- unsigned int info_hflow; /* hflow for channel */
- unsigned int info_reserved[8]; /* for future expansion */
-};
-
-#define DIGI_GETSTAT ('d'<<8) | 244 /* get board info */
-/************************************************************************
- *
- * Structure used with ioctl commands for per-channel information
- *
- ************************************************************************/
-struct digi_ch {
- unsigned int info_bdnum; /* Board number (0 based) */
- unsigned int info_channel; /* Channel index number */
- unsigned int info_ch_cflag; /* Channel cflag */
- unsigned int info_ch_iflag; /* Channel iflag */
- unsigned int info_ch_oflag; /* Channel oflag */
- unsigned int info_chsize; /* Channel structure size */
- unsigned int info_sleep_stat; /* sleep status */
- dev_t info_dev; /* device number */
- unsigned char info_initstate; /* Channel init state */
- unsigned char info_running; /* Channel running state */
- int reserved[8]; /* reserved for future use */
-};
-
-/*
-* This structure is used with the DIGI_FEPCMD ioctl to
-* tell the driver which port to send the command for.
-*/
-struct digi_cmd {
- int cmd;
- int word;
- int ncmds;
- int chan; /* channel index (zero based) */
- int bdid; /* board index (zero based) */
-};
-
-
-struct digi_getbuffer /* Struct for holding buffer use counts */
-{
- unsigned long tIn;
- unsigned long tOut;
- unsigned long rxbuf;
- unsigned long txbuf;
- unsigned long txdone;
-};
-
-struct digi_getcounter {
- unsigned long norun; /* number of UART overrun errors */
- unsigned long noflow; /* number of buffer overflow errors */
- unsigned long nframe; /* number of framing errors */
- unsigned long nparity; /* number of parity errors */
- unsigned long nbreak; /* number of breaks received */
- unsigned long rbytes; /* number of received bytes */
- unsigned long tbytes; /* number of bytes transmitted fully */
-};
-
-/*
-* info_sleep_stat defines
-*/
-#define INFO_RUNWAIT 0x0001
-#define INFO_WOPEN 0x0002
-#define INFO_TTIOW 0x0004
-#define INFO_CH_RWAIT 0x0008
-#define INFO_CH_WEMPTY 0x0010
-#define INFO_CH_WLOW 0x0020
-#define INFO_XXBUF_BUSY 0x0040
-
-#define DIGI_GETCH ('d'<<8) | 245 /* get board info */
-
-/* Board type definitions */
-
-#define SUBTYPE 0007
-#define T_PCXI 0000
-#define T_PCXM 0001
-#define T_PCXE 0002
-#define T_PCXR 0003
-#define T_SP 0004
-#define T_SP_PLUS 0005
-# define T_HERC 0000
-# define T_HOU 0001
-# define T_LON 0002
-# define T_CHA 0003
-#define FAMILY 0070
-#define T_COMXI 0000
-#define T_PCXX 0010
-#define T_CX 0020
-#define T_EPC 0030
-#define T_PCLITE 0040
-#define T_SPXX 0050
-#define T_AVXX 0060
-#define T_DXB 0070
-#define T_A2K_4_8 0070
-#define BUSTYPE 0700
-#define T_ISABUS 0000
-#define T_MCBUS 0100
-#define T_EISABUS 0200
-#define T_PCIBUS 0400
-
-/* Board State Definitions */
-
-#define BD_RUNNING 0x0
-#define BD_REASON 0x7f
-#define BD_NOTFOUND 0x1
-#define BD_NOIOPORT 0x2
-#define BD_NOMEM 0x3
-#define BD_NOBIOS 0x4
-#define BD_NOFEP 0x5
-#define BD_FAILED 0x6
-#define BD_ALLOCATED 0x7
-#define BD_TRIBOOT 0x8
-#define BD_BADKME 0x80
-
-#define DIGI_SPOLL ('d'<<8) | 254 /* change poller rate */
-
-#define DIGI_SETCUSTOMBAUD _IOW('e', 106, int) /* Set integer baud rate */
-#define DIGI_GETCUSTOMBAUD _IOR('e', 107, int) /* Get integer baud rate */
-
-#define DIGI_REALPORT_GETBUFFERS ('e'<<8) | 108
-#define DIGI_REALPORT_SENDIMMEDIATE ('e'<<8) | 109
-#define DIGI_REALPORT_GETCOUNTERS ('e'<<8) | 110
-#define DIGI_REALPORT_GETEVENTS ('e'<<8) | 111
-
-#define EV_OPU 0x0001 /* !<Output paused by client */
-#define EV_OPS 0x0002 /* !<Output paused by reqular sw flowctrl */
-#define EV_OPX 0x0004 /* !<Output paused by extra sw flowctrl */
-#define EV_OPH 0x0008 /* !<Output paused by hw flowctrl */
-#define EV_OPT 0x0800 /* !<Output paused for RTS Toggle predelay */
-
-#define EV_IPU 0x0010 /* !<Input paused unconditionally by user */
-#define EV_IPS 0x0020 /* !<Input paused by high/low water marks */
-#define EV_IPA 0x0400 /* !<Input paused by pattern alarm module */
-
-#define EV_TXB 0x0040 /* !<Transmit break pending */
-#define EV_TXI 0x0080 /* !<Transmit immediate pending */
-#define EV_TXF 0x0100 /* !<Transmit flowctrl char pending */
-#define EV_RXB 0x0200 /* !<Break received */
-
-#define EV_OPALL 0x080f /* !<Output pause flags */
-#define EV_IPALL 0x0430 /* !<Input pause flags */
-
-#endif /* DIGI_H */
diff --git a/drivers/staging/dgnc/dpacompat.h b/drivers/staging/dgnc/dpacompat.h
deleted file mode 100644
index b2d2dc0..0000000
--- a/drivers/staging/dgnc/dpacompat.h
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- * Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- */
-
-
-/*
- * This structure holds data needed for the intelligent <--> nonintelligent
- * DPA translation
- */
-struct ni_info {
- int board;
- int channel;
- int dtr;
- int rts;
- int cts;
- int dsr;
- int ri;
- int dcd;
- int curtx;
- int currx;
- unsigned short iflag;
- unsigned short oflag;
- unsigned short cflag;
- unsigned short lflag;
-
- unsigned int mstat;
- unsigned char hflow;
-
- unsigned char xmit_stopped;
- unsigned char recv_stopped;
-
- unsigned int baud;
-};
-
-#define RW_READ 1
-#define RW_WRITE 2
-#define DIGI_KME ('e'<<8) | 98 /* Read/Write Host */
-
-#define SUBTYPE 0007
-#define T_PCXI 0000
-#define T_PCXEM 0001
-#define T_PCXE 0002
-#define T_PCXR 0003
-#define T_SP 0004
-#define T_SP_PLUS 0005
-
-#define T_HERC 0000
-#define T_HOU 0001
-#define T_LON 0002
-#define T_CHA 0003
-
-#define T_NEO 0000
-#define T_NEO_EXPRESS 0001
-#define T_CLASSIC 0002
-
-#define FAMILY 0070
-#define T_COMXI 0000
-#define T_NI 0000
-#define T_PCXX 0010
-#define T_CX 0020
-#define T_EPC 0030
-#define T_PCLITE 0040
-#define T_SPXX 0050
-#define T_AVXX 0060
-#define T_DXB 0070
-#define T_A2K_4_8 0070
-
-#define BUSTYPE 0700
-#define T_ISABUS 0000
-#define T_MCBUS 0100
-#define T_EISABUS 0200
-#define T_PCIBUS 0400
-
-/* Board State Definitions */
-
-#define BD_RUNNING 0x0
-#define BD_REASON 0x7f
-#define BD_NOTFOUND 0x1
-#define BD_NOIOPORT 0x2
-#define BD_NOMEM 0x3
-#define BD_NOBIOS 0x4
-#define BD_NOFEP 0x5
-#define BD_FAILED 0x6
-#define BD_ALLOCATED 0x7
-#define BD_TRIBOOT 0x8
-#define BD_BADKME 0x80
-
-#define DIGI_AIXON 0x0400 /* Aux flow control in fep */
-
-/* Ioctls needed for dpa operation */
-
-#define DIGI_GETDD ('d'<<8) | 248 /* get driver info */
-#define DIGI_GETBD ('d'<<8) | 249 /* get board info */
-#define DIGI_GET_NI_INFO ('d'<<8) | 250 /* nonintelligent state snfo */
-
-/* Other special ioctls */
-#define DIGI_TIMERIRQ ('d'<<8) | 251 /* Enable/disable RS_TIMER use */
-#define DIGI_LOOPBACK ('d'<<8) | 252 /* Enable/disable UART internal loopback */
--
1.9.1
--
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