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Commit c90c69a5 authored by Linus Torvalds's avatar Linus Torvalds
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Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 

* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC] uctrl: Check request_irq() return value.
  [SPARC64]: Update defconfig.
  [SPARC64] bbc_i2c: Fix kenvctrld eating %100 cpu.
  [SPARC64]: Fix arch_teardown_msi_irq().
  [SPARC64]: virt_irq_free only needed when CONFIG_PCI_MSI
  [SPARC]: Remove the broken SUN_AURORA driver.
parents 6842ac64 19ba1b19
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Showing with 43 additions and 2903 deletions
Documentation/magic-number.txt
View file @ c90c69a5
......@@ -65,7 +65,6 @@ CMAGIC 0x0111 user include/linux/a.out.h
MKISS_DRIVER_MAGIC 0x04bf mkiss_channel drivers/net/mkiss.h
RISCOM8_MAGIC 0x0907 riscom_port drivers/char/riscom8.h
SPECIALIX_MAGIC 0x0907 specialix_port drivers/char/specialix_io8.h
AURORA_MAGIC 0x0A18 Aurora_port drivers/sbus/char/aurora.h
HDLC_MAGIC 0x239e n_hdlc drivers/char/n_hdlc.c
APM_BIOS_MAGIC 0x4101 apm_user arch/i386/kernel/apm.c
CYCLADES_MAGIC 0x4359 cyclades_port include/linux/cyclades.h
......
arch/sparc64/defconfig
View file @ c90c69a5
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.20
# Sun Feb 11 23:47:40 2007
# Linux kernel version: 2.6.21-rc1
# Mon Feb 26 10:45:21 2007
#
CONFIG_SPARC=y
CONFIG_SPARC64=y
......@@ -41,6 +41,7 @@ CONFIG_LOCALVERSION=""
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
# CONFIG_IPC_NS is not set
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_BSD_PROCESS_ACCT is not set
# CONFIG_TASKSTATS is not set
......@@ -322,6 +323,7 @@ CONFIG_CONNECTOR=m
#
# Plug and Play support
#
# CONFIG_PNPACPI is not set
#
# Block devices
......@@ -787,6 +789,7 @@ CONFIG_I2C_ALGOBIT=y
# CONFIG_I2C_NFORCE2 is not set
# CONFIG_I2C_OCORES is not set
# CONFIG_I2C_PARPORT_LIGHT is not set
# CONFIG_I2C_PASEMI is not set
# CONFIG_I2C_PROSAVAGE is not set
# CONFIG_I2C_SAVAGE4 is not set
# CONFIG_I2C_SIS5595 is not set
......@@ -833,6 +836,7 @@ CONFIG_HWMON=y
# CONFIG_SENSORS_ADM1021 is not set
# CONFIG_SENSORS_ADM1025 is not set
# CONFIG_SENSORS_ADM1026 is not set
# CONFIG_SENSORS_ADM1029 is not set
# CONFIG_SENSORS_ADM1031 is not set
# CONFIG_SENSORS_ADM9240 is not set
# CONFIG_SENSORS_ASB100 is not set
......@@ -873,6 +877,11 @@ CONFIG_HWMON=y
# CONFIG_SENSORS_W83627EHF is not set
# CONFIG_HWMON_DEBUG_CHIP is not set
#
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set
#
# Multimedia devices
#
......@@ -887,16 +896,22 @@ CONFIG_HWMON=y
#
# Graphics support
#
# CONFIG_FIRMWARE_EDID is not set
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
CONFIG_FB=y
# CONFIG_FIRMWARE_EDID is not set
CONFIG_FB_DDC=y
CONFIG_FB_CFB_FILLRECT=y
CONFIG_FB_CFB_COPYAREA=y
CONFIG_FB_CFB_IMAGEBLIT=y
# CONFIG_FB_SVGALIB is not set
# CONFIG_FB_MACMODES is not set
# CONFIG_FB_BACKLIGHT is not set
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
#
# Frambuffer hardware drivers
#
# CONFIG_FB_CIRRUS is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_ASILIANT is not set
......@@ -908,9 +923,11 @@ CONFIG_FB_TILEBLITTING=y
# CONFIG_FB_MATROX is not set
CONFIG_FB_RADEON=y
CONFIG_FB_RADEON_I2C=y
# CONFIG_FB_RADEON_BACKLIGHT is not set
# CONFIG_FB_RADEON_DEBUG is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_S3 is not set
# CONFIG_FB_SAVAGE is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_NEOMAGIC is not set
......@@ -947,7 +964,6 @@ CONFIG_LOGO=y
# CONFIG_LOGO_LINUX_VGA16 is not set
# CONFIG_LOGO_LINUX_CLUT224 is not set
CONFIG_LOGO_SUN_CLUT224=y
# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
#
# Sound
......@@ -1192,6 +1208,7 @@ CONFIG_USB_HIDDEV=y
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_BERRY_CHARGE is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYPRESS_CY7C63 is not set
# CONFIG_USB_CYTHERM is not set
......@@ -1445,9 +1462,11 @@ CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_FS=y
# CONFIG_HEADERS_CHECK is not set
CONFIG_DEBUG_KERNEL=y
# CONFIG_DEBUG_SHIRQ is not set
CONFIG_LOG_BUF_SHIFT=18
CONFIG_DETECT_SOFTLOCKUP=y
CONFIG_SCHEDSTATS=y
# CONFIG_TIMER_STATS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_RT_MUTEXES is not set
# CONFIG_RT_MUTEX_TESTER is not set
......@@ -1465,6 +1484,7 @@ CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_FORCED_INLINING=y
# CONFIG_RCU_TORTURE_TEST is not set
# CONFIG_LKDTM is not set
# CONFIG_FAULT_INJECTION is not set
# CONFIG_DEBUG_STACK_USAGE is not set
# CONFIG_DEBUG_DCFLUSH is not set
# CONFIG_STACK_DEBUG is not set
......
arch/sparc64/kernel/irq.c
View file @ c90c69a5
......@@ -109,6 +109,7 @@ static unsigned char virt_irq_alloc(unsigned int real_irq)
return ent;
}
#ifdef CONFIG_PCI_MSI
static void virt_irq_free(unsigned int virt_irq)
{
unsigned int real_irq;
......@@ -121,6 +122,7 @@ static void virt_irq_free(unsigned int virt_irq)
__bucket(real_irq)->virt_irq = 0;
}
#endif
static unsigned int virt_to_real_irq(unsigned char virt_irq)
{
......
arch/sparc64/kernel/pci.c
View file @ c90c69a5
......@@ -668,7 +668,7 @@ int arch_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
void arch_teardown_msi_irq(unsigned int virt_irq)
{
struct msi_desc *entry = get_irq_data(virt_irq);
struct msi_desc *entry = get_irq_msi(virt_irq);
struct pci_dev *pdev = entry->dev;
struct pcidev_cookie *pcp = pdev->sysdata;
struct pci_pbm_info *pbm = pcp->pbm;
......
drivers/sbus/char/Kconfig
View file @ c90c69a5
......@@ -46,13 +46,6 @@ config SUN_VIDEOPIX
based on the Phillips SAA9051, can handle NTSC and PAL/SECAM and
SVIDEO signals.
config SUN_AURORA
tristate "Aurora Multiboard 1600se (EXPERIMENTAL)"
depends on EXPERIMENTAL && BROKEN
help
The Aurora Multiboard is a multi-port high-speed serial controller.
If you have one of these, say Y.
config TADPOLE_TS102_UCTRL
tristate "Tadpole TS102 Microcontroller support (EXPERIMENTAL)"
depends on EXPERIMENTAL && SPARC32
......
drivers/sbus/char/Makefile
View file @ c90c69a5
......@@ -19,7 +19,6 @@ obj-$(CONFIG_SUN_OPENPROMIO) += openprom.o
obj-$(CONFIG_SUN_MOSTEK_RTC) += rtc.o
obj-$(CONFIG_SUN_BPP) += bpp.o
obj-$(CONFIG_SUN_VIDEOPIX) += vfc.o
obj-$(CONFIG_SUN_AURORA) += aurora.o
obj-$(CONFIG_TADPOLE_TS102_UCTRL) += uctrl.o
obj-$(CONFIG_SUN_JSFLASH) += jsflash.o
obj-$(CONFIG_BBC_I2C) += bbc.o
drivers/sbus/char/aurora.c deleted 100644 → 0
View file @ 6842ac64
/* $Id: aurora.c,v 1.19 2002/01/08 16:00:16 davem Exp $
* linux/drivers/sbus/char/aurora.c -- Aurora multiport driver
*
* Copyright (c) 1999 by Oliver Aldulea (oli at bv dot ro)
*
* This code is based on the RISCom/8 multiport serial driver written
* by Dmitry Gorodchanin (pgmdsg@ibi.com), based on the Linux serial
* driver, written by Linus Torvalds, Theodore T'so and others.
* The Aurora multiport programming info was obtained mainly from the
* Cirrus Logic CD180 documentation (available on the web), and by
* doing heavy tests on the board. Many thanks to Eddie C. Dost for the
* help on the sbus interface.
*
* 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 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; 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.
*
* Revision 1.0
*
* This is the first public release.
*
* Most of the information you need is in the aurora.h file. Please
* read that file before reading this one.
*
* Several parts of the code do not have comments yet.
*
* n.b. The board can support 115.2 bit rates, but only on a few
* ports. The total badwidth of one chip (ports 0-7 or 8-15) is equal
* to OSC_FREQ div 16. In case of my board, each chip can take 6
* channels of 115.2 kbaud. This information is not well-tested.
*
* Fixed to use tty_get_baud_rate().
* Theodore Ts'o <tytso@mit.edu>, 2001-Oct-12
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/sched.h>
#ifdef AURORA_INT_DEBUG
#include <linux/timer.h>
#endif
#include <linux/interrupt.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/bitops.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/oplib.h>
#include <asm/system.h>
#include <asm/kdebug.h>
#include <asm/sbus.h>
#include <asm/uaccess.h>
#include "aurora.h"
#include "cd180.h"
unsigned char irqs[4] = {
0, 0, 0, 0
};
#ifdef AURORA_INT_DEBUG
int irqhit=0;
#endif
static struct tty_driver *aurora_driver;
static struct Aurora_board aurora_board[AURORA_NBOARD] = {
{0,},
};
static struct Aurora_port aurora_port[AURORA_TNPORTS] = {
{ 0, },
};
/* no longer used. static struct Aurora_board * IRQ_to_board[16] = { NULL, } ;*/
static unsigned char * tmp_buf = NULL;
DECLARE_TASK_QUEUE(tq_aurora);
static inline int aurora_paranoia_check(struct Aurora_port const * port,
char *name, const char *routine)
{
#ifdef AURORA_PARANOIA_CHECK
static const char *badmagic =
KERN_DEBUG "aurora: Warning: bad aurora port magic number for device %s in %s\n";
static const char *badinfo =
KERN_DEBUG "aurora: Warning: null aurora port for device %s in %s\n";
if (!port) {
printk(badinfo, name, routine);
return 1;
}
if (port->magic != AURORA_MAGIC) {
printk(badmagic, name, routine);
return 1;
}
#endif
return 0;
}
/*
*
* Service functions for aurora driver.
*
*/
/* Get board number from pointer */
static inline int board_No (struct Aurora_board const * bp)
{
return bp - aurora_board;
}
/* Get port number from pointer */
static inline int port_No (struct Aurora_port const * port)
{
return AURORA_PORT(port - aurora_port);
}
/* Get pointer to board from pointer to port */
static inline struct Aurora_board * port_Board(struct Aurora_port const * port)
{
return &aurora_board[AURORA_BOARD(port - aurora_port)];
}
/* Wait for Channel Command Register ready */
static inline void aurora_wait_CCR(struct aurora_reg128 * r)
{
unsigned long delay;
#ifdef AURORA_DEBUG
printk("aurora_wait_CCR\n");
#endif
/* FIXME: need something more descriptive than 100000 :) */
for (delay = 100000; delay; delay--)
if (!sbus_readb(&r->r[CD180_CCR]))
return;
printk(KERN_DEBUG "aurora: Timeout waiting for CCR.\n");
}
/*
* aurora probe functions.
*/
/* Must be called with enabled interrupts */
static inline void aurora_long_delay(unsigned long delay)
{
unsigned long i;
#ifdef AURORA_DEBUG
printk("aurora_long_delay: start\n");
#endif
for (i = jiffies + delay; time_before(jiffies, i); ) ;
#ifdef AURORA_DEBUG
printk("aurora_long_delay: end\n");
#endif
}
/* Reset and setup CD180 chip */
static int aurora_init_CD180(struct Aurora_board * bp, int chip)
{
unsigned long flags;
int id;
#ifdef AURORA_DEBUG
printk("aurora_init_CD180: start %d:%d\n",
board_No(bp), chip);
#endif
save_flags(flags); cli();
sbus_writeb(0, &bp->r[chip]->r[CD180_CAR]);
sbus_writeb(0, &bp->r[chip]->r[CD180_GSVR]);
/* Wait for CCR ready */
aurora_wait_CCR(bp->r[chip]);
/* Reset CD180 chip */
sbus_writeb(CCR_HARDRESET, &bp->r[chip]->r[CD180_CCR]);
udelay(1);
sti();
id=1000;
while((--id) &&
(sbus_readb(&bp->r[chip]->r[CD180_GSVR])!=0xff))udelay(100);
if(!id) {
printk(KERN_ERR "aurora%d: Chip %d failed init.\n",
board_No(bp), chip);
restore_flags(flags);
return(-1);
}
cli();
sbus_writeb((board_No(bp)<<5)|((chip+1)<<3),
&bp->r[chip]->r[CD180_GSVR]); /* Set ID for this chip */
sbus_writeb(0x80|bp->ACK_MINT,
&bp->r[chip]->r[CD180_MSMR]); /* Prio for modem intr */
sbus_writeb(0x80|bp->ACK_TINT,
&bp->r[chip]->r[CD180_TSMR]); /* Prio for transmitter intr */
sbus_writeb(0x80|bp->ACK_RINT,
&bp->r[chip]->r[CD180_RSMR]); /* Prio for receiver intr */
/* Setting up prescaler. We need 4 tick per 1 ms */
sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) >> 8,
&bp->r[chip]->r[CD180_PPRH]);
sbus_writeb((bp->oscfreq/(1000000/AURORA_TPS)) & 0xff,
&bp->r[chip]->r[CD180_PPRL]);
sbus_writeb(SRCR_AUTOPRI|SRCR_GLOBPRI,
&bp->r[chip]->r[CD180_SRCR]);
id = sbus_readb(&bp->r[chip]->r[CD180_GFRCR]);
printk(KERN_INFO "aurora%d: Chip %d id %02x: ",
board_No(bp), chip,id);
if(sbus_readb(&bp->r[chip]->r[CD180_SRCR]) & 128) {
switch (id) {
case 0x82:printk("CL-CD1864 rev A\n");break;
case 0x83:printk("CL-CD1865 rev A\n");break;
case 0x84:printk("CL-CD1865 rev B\n");break;
case 0x85:printk("CL-CD1865 rev C\n");break;
default:printk("Unknown.\n");
};
} else {
switch (id) {
case 0x81:printk("CL-CD180 rev B\n");break;
case 0x82:printk("CL-CD180 rev C\n");break;
default:printk("Unknown.\n");
};
}
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_init_CD180: end\n");
#endif
return 0;
}
static int valid_irq(unsigned char irq)
{
int i;
for(i=0;i<TYPE_1_IRQS;i++)
if (type_1_irq[i]==irq) return 1;
return 0;
}
static irqreturn_t aurora_interrupt(int irq, void * dev_id);
/* Main probing routine, also sets irq. */
static int aurora_probe(void)
{
struct sbus_bus *sbus;
struct sbus_dev *sdev;
int grrr;
char buf[30];
int bn = 0;
struct Aurora_board *bp;
for_each_sbus(sbus) {
for_each_sbusdev(sdev, sbus) {
/* printk("Try: %x %s\n",sdev,sdev->prom_name);*/
if (!strcmp(sdev->prom_name, "sio16")) {
#ifdef AURORA_DEBUG
printk(KERN_INFO "aurora: sio16 at %p\n",sdev);
#endif
if((sdev->reg_addrs[0].reg_size!=1) &&
(sdev->reg_addrs[1].reg_size!=128) &&
(sdev->reg_addrs[2].reg_size!=128) &&
(sdev->reg_addrs[3].reg_size!=4)) {
printk(KERN_ERR "aurora%d: registers' sizes "
"do not match.\n", bn);
break;
}
bp = &aurora_board[bn];
bp->r0 = (struct aurora_reg1 *)
sbus_ioremap(&sdev->resource[0], 0,
sdev->reg_addrs[0].reg_size,
"sio16");
if (bp->r0 == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[0]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 0: %p\n", bp->r0);
#endif
bp->r[0] = (struct aurora_reg128 *)
sbus_ioremap(&sdev->resource[1], 0,
sdev->reg_addrs[1].reg_size,
"sio16");
if (bp->r[0] == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[1]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 1: %p\n", bp->r[0]);
#endif
bp->r[1] = (struct aurora_reg128 *)
sbus_ioremap(&sdev->resource[2], 0,
sdev->reg_addrs[2].reg_size,
"sio16");
if (bp->r[1] == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[2]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 2: %p\n", bp->r[1]);
#endif
bp->r3 = (struct aurora_reg4 *)
sbus_ioremap(&sdev->resource[3], 0,
sdev->reg_addrs[3].reg_size,
"sio16");
if (bp->r3 == NULL) {
printk(KERN_ERR "aurora%d: can't map "
"reg_addrs[3]\n", bn);
break;
}
#ifdef AURORA_DEBUG
printk("Map reg 3: %p\n", bp->r3);
#endif
/* Variables setup */
bp->flags = 0;
#ifdef AURORA_DEBUG
grrr=prom_getint(sdev->prom_node,"intr");
printk("intr pri %d\n", grrr);
#endif
if ((bp->irq=irqs[bn]) && valid_irq(bp->irq) &&
!request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
} else
if ((bp->irq=prom_getint(sdev->prom_node, "bintr")) && valid_irq(bp->irq) &&
!request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
} else
if ((bp->irq=prom_getint(sdev->prom_node, "intr")) && valid_irq(bp->irq) &&
!request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
} else
for(grrr=0;grrr<TYPE_1_IRQS;grrr++) {
if ((bp->irq=type_1_irq[grrr])&&!request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED, "sio16", bp)) {
free_irq(bp->irq|0x30, bp);
break;
} else {
printk(KERN_ERR "aurora%d: Could not get an irq for this board !!!\n",bn);
bp->flags=0xff;
}
}
if(bp->flags==0xff)break;
printk(KERN_INFO "aurora%d: irq %d\n",bn,bp->irq&0x0f);
buf[0]=0;
grrr=prom_getproperty(sdev->prom_node,"dtr_rts",buf,sizeof(buf));
if(!strcmp(buf,"swapped")){
printk(KERN_INFO "aurora%d: Swapped DTR and RTS\n",bn);
bp->DTR=MSVR_RTS;
bp->RTS=MSVR_DTR;
bp->MSVDTR=CD180_MSVRTS;
bp->MSVRTS=CD180_MSVDTR;
bp->flags|=AURORA_BOARD_DTR_FLOW_OK;
}else{
#ifdef AURORA_FORCE_DTR_FLOW
printk(KERN_INFO "aurora%d: Forcing swapped DTR-RTS\n",bn);
bp->DTR=MSVR_RTS;
bp->RTS=MSVR_DTR;
bp->MSVDTR=CD180_MSVRTS;
bp->MSVRTS=CD180_MSVDTR;
bp->flags|=AURORA_BOARD_DTR_FLOW_OK;
#else
printk(KERN_INFO "aurora%d: Normal DTR and RTS\n",bn);
bp->DTR=MSVR_DTR;
bp->RTS=MSVR_RTS;
bp->MSVDTR=CD180_MSVDTR;
bp->MSVRTS=CD180_MSVRTS;
#endif
}
bp->oscfreq=prom_getint(sdev->prom_node,"clk")*100;
printk(KERN_INFO "aurora%d: Oscillator: %d Hz\n",bn,bp->oscfreq);
grrr=prom_getproperty(sdev->prom_node,"chip",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Chips: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"manu",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Manufacturer: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"model",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Model: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"rev",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Revision: %s\n",bn,buf);
grrr=prom_getproperty(sdev->prom_node,"mode",buf,sizeof(buf));
printk(KERN_INFO "aurora%d: Mode: %s\n",bn,buf);
#ifdef MODULE
bp->count=0;
#endif
bp->flags = AURORA_BOARD_PRESENT;
/* hardware ack */
bp->ACK_MINT=1;
bp->ACK_TINT=2;
bp->ACK_RINT=3;
bn++;
}
}
}
return bn;
}
static void aurora_release_io_range(struct Aurora_board *bp)
{
sbus_iounmap((unsigned long)bp->r0, 1);
sbus_iounmap((unsigned long)bp->r[0], 128);
sbus_iounmap((unsigned long)bp->r[1], 128);
sbus_iounmap((unsigned long)bp->r3, 4);
}
static inline void aurora_mark_event(struct Aurora_port * port, int event)
{
#ifdef AURORA_DEBUG
printk("aurora_mark_event: start\n");
#endif
set_bit(event, &port->event);
queue_task(&port->tqueue, &tq_aurora);
mark_bh(AURORA_BH);
#ifdef AURORA_DEBUG
printk("aurora_mark_event: end\n");
#endif
}
static __inline__ struct Aurora_port * aurora_get_port(struct Aurora_board const * bp,
int chip,
unsigned char const *what)
{
unsigned char channel;
struct Aurora_port * port;
channel = ((chip << 3) |
((sbus_readb(&bp->r[chip]->r[CD180_GSCR]) & GSCR_CHAN) >> GSCR_CHAN_OFF));
port = &aurora_port[board_No(bp) * AURORA_NPORT * AURORA_NCD180 + channel];
if (port->flags & ASYNC_INITIALIZED)
return port;
printk(KERN_DEBUG "aurora%d: %s interrupt from invalid port %d\n",
board_No(bp), what, channel);
return NULL;
}
static void aurora_receive_exc(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char status;
unsigned char ch;
if (!(port = aurora_get_port(bp, chip, "Receive_x")))
return;
tty = port->tty;
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
#ifdef AURORA_INTNORM
printk("aurora%d: port %d: Working around flip buffer overflow.\n",
board_No(bp), port_No(port));
#endif
return;
}
#ifdef AURORA_REPORT_OVERRUN
status = sbus_readb(&bp->r[chip]->r[CD180_RCSR]);
if (status & RCSR_OE) {
port->overrun++;
#if 1
printk("aurora%d: port %d: Overrun. Total %ld overruns.\n",
board_No(bp), port_No(port), port->overrun);
#endif
}
status &= port->mark_mask;
#else
status = sbus_readb(&bp->r[chip]->r[CD180_RCSR]) & port->mark_mask;
#endif
ch = sbus_readb(&bp->r[chip]->r[CD180_RDR]);
if (!status)
return;
if (status & RCSR_TOUT) {
/* printk("aurora%d: port %d: Receiver timeout. Hardware problems ?\n",
board_No(bp), port_No(port));*/
return;
} else if (status & RCSR_BREAK) {
printk(KERN_DEBUG "aurora%d: port %d: Handling break...\n",
board_No(bp), port_No(port));
*tty->flip.flag_buf_ptr++ = TTY_BREAK;
if (port->flags & ASYNC_SAK)
do_SAK(tty);
} else if (status & RCSR_PE)
*tty->flip.flag_buf_ptr++ = TTY_PARITY;
else if (status & RCSR_FE)
*tty->flip.flag_buf_ptr++ = TTY_FRAME;
else if (status & RCSR_OE)
*tty->flip.flag_buf_ptr++ = TTY_OVERRUN;
else
*tty->flip.flag_buf_ptr++ = 0;
*tty->flip.char_buf_ptr++ = ch;
tty->flip.count++;
queue_task(&tty->flip.tqueue, &tq_timer);
}
static void aurora_receive(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char count,cnt;
if (!(port = aurora_get_port(bp, chip, "Receive")))
return;
tty = port->tty;
count = sbus_readb(&bp->r[chip]->r[CD180_RDCR]);
#ifdef AURORA_REPORT_FIFO
port->hits[count > 8 ? 9 : count]++;
#endif
while (count--) {
if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
#ifdef AURORA_INTNORM
printk("aurora%d: port %d: Working around flip buffer overflow.\n",
board_No(bp), port_No(port));
#endif
break;
}
cnt = sbus_readb(&bp->r[chip]->r[CD180_RDR]);
*tty->flip.char_buf_ptr++ = cnt;
*tty->flip.flag_buf_ptr++ = 0;
tty->flip.count++;
}
queue_task(&tty->flip.tqueue, &tq_timer);
}
static void aurora_transmit(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char count;
if (!(port = aurora_get_port(bp, chip, "Transmit")))
return;
tty = port->tty;
if (port->SRER & SRER_TXEMPTY) {
/* FIFO drained */
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
port->SRER &= ~SRER_TXEMPTY;
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
return;
}
if ((port->xmit_cnt <= 0 && !port->break_length)
|| tty->stopped || tty->hw_stopped) {
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
port->SRER &= ~SRER_TXRDY;
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
return;
}
if (port->break_length) {
if (port->break_length > 0) {
if (port->COR2 & COR2_ETC) {
sbus_writeb(CD180_C_ESC,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(CD180_C_SBRK,
&bp->r[chip]->r[CD180_TDR]);
port->COR2 &= ~COR2_ETC;
}
count = min(port->break_length, 0xff);
sbus_writeb(CD180_C_ESC,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(CD180_C_DELAY,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(count,
&bp->r[chip]->r[CD180_TDR]);
if (!(port->break_length -= count))
port->break_length--;
} else {
sbus_writeb(CD180_C_ESC,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(CD180_C_EBRK,
&bp->r[chip]->r[CD180_TDR]);
sbus_writeb(port->COR2,
&bp->r[chip]->r[CD180_COR2]);
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_CORCHG2,
&bp->r[chip]->r[CD180_CCR]);
port->break_length = 0;
}
return;
}
count = CD180_NFIFO;
do {
u8 byte = port->xmit_buf[port->xmit_tail++];
sbus_writeb(byte, &bp->r[chip]->r[CD180_TDR]);
port->xmit_tail = port->xmit_tail & (SERIAL_XMIT_SIZE-1);
if (--port->xmit_cnt <= 0)
break;
} while (--count > 0);
if (port->xmit_cnt <= 0) {
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
port->SRER &= ~SRER_TXRDY;
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
}
if (port->xmit_cnt <= port->wakeup_chars)
aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
}
static void aurora_check_modem(struct Aurora_board const * bp, int chip)
{
struct Aurora_port *port;
struct tty_struct *tty;
unsigned char mcr;
if (!(port = aurora_get_port(bp, chip, "Modem")))
return;
tty = port->tty;
mcr = sbus_readb(&bp->r[chip]->r[CD180_MCR]);
if (mcr & MCR_CDCHG) {
if (sbus_readb(&bp->r[chip]->r[CD180_MSVR]) & MSVR_CD)
wake_up_interruptible(&port->open_wait);
else
schedule_task(&port->tqueue_hangup);
}
/* We don't have such things yet. My aurora board has DTR and RTS swapped, but that doesn't count in this driver. Let's hope
* Aurora didn't made any boards with CTS or DSR broken...
*/
/* #ifdef AURORA_BRAIN_DAMAGED_CTS
if (mcr & MCR_CTSCHG) {
if (aurora_in(bp, CD180_MSVR) & MSVR_CTS) {
tty->hw_stopped = 0;
port->SRER |= SRER_TXRDY;
if (port->xmit_cnt <= port->wakeup_chars)
aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
} else {
tty->hw_stopped = 1;
port->SRER &= ~SRER_TXRDY;
}
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
}
if (mcr & MCR_DSRCHG) {
if (aurora_in(bp, CD180_MSVR) & MSVR_DSR) {
tty->hw_stopped = 0;
port->SRER |= SRER_TXRDY;
if (port->xmit_cnt <= port->wakeup_chars)
aurora_mark_event(port, RS_EVENT_WRITE_WAKEUP);
} else {
tty->hw_stopped = 1;
port->SRER &= ~SRER_TXRDY;
}
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
}
#endif AURORA_BRAIN_DAMAGED_CTS */
/* Clear change bits */
sbus_writeb(0, &bp->r[chip]->r[CD180_MCR]);
}
/* The main interrupt processing routine */
static irqreturn_t aurora_interrupt(int irq, void * dev_id)
{
unsigned char status;
unsigned char ack,chip/*,chip_id*/;
struct Aurora_board * bp = (struct Aurora_board *) dev_id;
unsigned long loop = 0;
#ifdef AURORA_INT_DEBUG
printk("IRQ%d %d\n",irq,++irqhit);
#ifdef AURORA_FLOODPRO
if (irqhit>=AURORA_FLOODPRO)
sbus_writeb(8, &bp->r0->r);
#endif
#endif
/* old bp = IRQ_to_board[irq&0x0f];*/
if (!bp || !(bp->flags & AURORA_BOARD_ACTIVE))
return IRQ_NONE;
/* The while() below takes care of this.
status = sbus_readb(&bp->r[0]->r[CD180_SRSR]);
#ifdef AURORA_INT_DEBUG
printk("mumu: %02x\n", status);
#endif
if (!(status&SRSR_ANYINT))
return IRQ_NONE; * Nobody has anything to say, so exit *
*/
while ((loop++ < 48) &&
(status = sbus_readb(&bp->r[0]->r[CD180_SRSR]) & SRSR_ANYINT)){
#ifdef AURORA_INT_DEBUG
printk("SRSR: %02x\n", status);
#endif
if (status & SRSR_REXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_RINT]);
#ifdef AURORA_INT_DEBUG
printk("R-ACK %02x\n", ack);
#endif
if ((ack >> 5) == board_No(bp)) {
if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) {
if ((ack&GSVR_ITMASK)==GSVR_IT_RGD) {
aurora_receive(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if ((ack & GSVR_ITMASK) == GSVR_IT_REXC) {
aurora_receive_exc(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
} else if (status & SRSR_TEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_TINT]);
#ifdef AURORA_INT_DEBUG
printk("T-ACK %02x\n", ack);
#endif
if ((ack >> 5) == board_No(bp)) {
if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) {
if ((ack&GSVR_ITMASK)==GSVR_IT_TX) {
aurora_transmit(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
} else if (status & SRSR_MEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_MINT]);
#ifdef AURORA_INT_DEBUG
printk("M-ACK %02x\n", ack);
#endif
if ((ack >> 5) == board_No(bp)) {
if ((chip = ((ack>>3)&3)-1) < AURORA_NCD180) {
if ((ack&GSVR_ITMASK)==GSVR_IT_MDM) {
aurora_check_modem(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
}
}
/* I guess this faster code can be used with CD1865, using AUROPRI and GLOBPRI. */
#if 0
while ((loop++ < 48)&&(status=bp->r[0]->r[CD180_SRSR]&SRSR_ANYINT)){
#ifdef AURORA_INT_DEBUG
printk("SRSR: %02x\n",status);
#endif
ack = sbus_readb(&bp->r3->r[0]);
#ifdef AURORA_INT_DEBUG
printk("ACK: %02x\n",ack);
#endif
if ((ack>>5)==board_No(bp)) {
if ((chip=((ack>>3)&3)-1) < AURORA_NCD180) {
ack&=GSVR_ITMASK;
if (ack==GSVR_IT_RGD) {
aurora_receive(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if (ack==GSVR_IT_REXC) {
aurora_receive_exc(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if (ack==GSVR_IT_TX) {
aurora_transmit(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
} else if (ack==GSVR_IT_MDM) {
aurora_check_modem(bp,chip);
sbus_writeb(0,
&bp->r[chip]->r[CD180_EOSRR]);
}
}
}
}
#endif
/* This is the old handling routine, used in riscom8 for only one CD180. I keep it here for reference. */
#if 0
for(chip=0;chip<AURORA_NCD180;chip++){
chip_id=(board_No(bp)<<5)|((chip+1)<<3);
loop=0;
while ((loop++ < 1) &&
((status = sbus_readb(&bp->r[chip]->r[CD180_SRSR])) &
(SRSR_TEXT | SRSR_MEXT | SRSR_REXT))) {
if (status & SRSR_REXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_RINT]);
if (ack == (chip_id | GSVR_IT_RGD)) {
#ifdef AURORA_INTMSG
printk("RX ACK\n");
#endif
aurora_receive(bp,chip);
} else if (ack == (chip_id | GSVR_IT_REXC)) {
#ifdef AURORA_INTMSG
printk("RXC ACK\n");
#endif
aurora_receive_exc(bp,chip);
} else {
#ifdef AURORA_INTNORM
printk("aurora%d-%d: Bad receive ack 0x%02x.\n",
board_No(bp), chip, ack);
#endif
}
} else if (status & SRSR_TEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_TINT]);
if (ack == (chip_id | GSVR_IT_TX)){
#ifdef AURORA_INTMSG
printk("TX ACK\n");
#endif
aurora_transmit(bp,chip);
} else {
#ifdef AURORA_INTNORM
printk("aurora%d-%d: Bad transmit ack 0x%02x.\n",
board_No(bp), chip, ack);
#endif
}
} else if (status & SRSR_MEXT) {
ack = sbus_readb(&bp->r3->r[bp->ACK_MINT]);
if (ack == (chip_id | GSVR_IT_MDM)){
#ifdef AURORA_INTMSG
printk("MDM ACK\n");
#endif
aurora_check_modem(bp,chip);
} else {
#ifdef AURORA_INTNORM
printk("aurora%d-%d: Bad modem ack 0x%02x.\n",
board_No(bp), chip, ack);
#endif
}
}
sbus_writeb(0, &bp->r[chip]->r[CD180_EOSRR]);
}
}
#endif
return IRQ_HANDLED;
}
#ifdef AURORA_INT_DEBUG
static void aurora_timer (unsigned long ignored);
static DEFINE_TIMER(aurora_poll_timer, aurora_timer, 0, 0);
static void
aurora_timer (unsigned long ignored)
{
unsigned long flags;
int i;
save_flags(flags); cli();
printk("SRSR: %02x,%02x - ",
sbus_readb(&aurora_board[0].r[0]->r[CD180_SRSR]),
sbus_readb(&aurora_board[0].r[1]->r[CD180_SRSR]));
for (i = 0; i < 4; i++) {
udelay(1);
printk("%02x ",
sbus_readb(&aurora_board[0].r3->r[i]));
}
printk("\n");
aurora_poll_timer.expires = jiffies + 300;
add_timer (&aurora_poll_timer);
restore_flags(flags);
}
#endif
/*
* Routines for open & close processing.
*/
/* Called with disabled interrupts */
static int aurora_setup_board(struct Aurora_board * bp)
{
int error;
#ifdef AURORA_ALLIRQ
int i;
for (i = 0; i < AURORA_ALLIRQ; i++) {
error = request_irq(allirq[i]|0x30, aurora_interrupt, IRQF_SHARED,
"sio16", bp);
if (error)
printk(KERN_ERR "IRQ%d request error %d\n",
allirq[i], error);
}
#else
error = request_irq(bp->irq|0x30, aurora_interrupt, IRQF_SHARED,
"sio16", bp);
if (error) {
printk(KERN_ERR "IRQ request error %d\n", error);
return error;
}
#endif
/* Board reset */
sbus_writeb(0, &bp->r0->r);
udelay(1);
if (bp->flags & AURORA_BOARD_TYPE_2) {
/* unknown yet */
} else {
sbus_writeb((AURORA_CFG_ENABLE_IO | AURORA_CFG_ENABLE_IRQ |
(((bp->irq)&0x0f)>>2)),
&bp->r0->r);
}
udelay(10000);
if (aurora_init_CD180(bp,0))error=1;error=0;
if (aurora_init_CD180(bp,1))error++;
if (error == AURORA_NCD180) {
printk(KERN_ERR "Both chips failed initialisation.\n");
return -EIO;
}
#ifdef AURORA_INT_DEBUG
aurora_poll_timer.expires= jiffies + 1;
add_timer(&aurora_poll_timer);
#endif
#ifdef AURORA_DEBUG
printk("aurora_setup_board: end\n");
#endif
return 0;
}
/* Called with disabled interrupts */
static void aurora_shutdown_board(struct Aurora_board *bp)
{
int i;
#ifdef AURORA_DEBUG
printk("aurora_shutdown_board: start\n");
#endif
#ifdef AURORA_INT_DEBUG
del_timer(&aurora_poll_timer);
#endif
#ifdef AURORA_ALLIRQ
for(i=0;i<AURORA_ALLIRQ;i++){
free_irq(allirq[i]|0x30, bp);
/* IRQ_to_board[allirq[i]&0xf] = NULL;*/
}
#else
free_irq(bp->irq|0x30, bp);
/* IRQ_to_board[bp->irq&0xf] = NULL;*/
#endif
/* Drop all DTR's */
for(i=0;i<16;i++){
sbus_writeb(i & 7, &bp->r[i>>3]->r[CD180_CAR]);
udelay(1);
sbus_writeb(0, &bp->r[i>>3]->r[CD180_MSVR]);
udelay(1);
}
/* Board shutdown */
sbus_writeb(0, &bp->r0->r);
#ifdef AURORA_DEBUG
printk("aurora_shutdown_board: end\n");
#endif
}
/* Setting up port characteristics.
* Must be called with disabled interrupts
*/
static void aurora_change_speed(struct Aurora_board *bp, struct Aurora_port *port)
{
struct tty_struct *tty;
unsigned long baud;
long tmp;
unsigned char cor1 = 0, cor3 = 0;
unsigned char mcor1 = 0, mcor2 = 0,chip;
#ifdef AURORA_DEBUG
printk("aurora_change_speed: start\n");
#endif
if (!(tty = port->tty) || !tty->termios)
return;
chip = AURORA_CD180(port_No(port));
port->SRER = 0;
port->COR2 = 0;
port->MSVR = MSVR_RTS|MSVR_DTR;
baud = tty_get_baud_rate(tty);
/* Select port on the board */
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
if (!baud) {
/* Drop DTR & exit */
port->MSVR &= ~(bp->DTR|bp->RTS);
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
return;
} else {
/* Set DTR on */
port->MSVR |= bp->DTR;
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
}
/* Now we must calculate some speed dependent things. */
/* Set baud rate for port. */
tmp = (((bp->oscfreq + baud/2) / baud +
CD180_TPC/2) / CD180_TPC);
/* tmp = (bp->oscfreq/7)/baud;
if((tmp%10)>4)tmp=tmp/10+1;else tmp=tmp/10;*/
/* printk("Prescaler period: %d\n",tmp);*/
sbus_writeb((tmp >> 8) & 0xff,
&bp->r[chip]->r[CD180_RBPRH]);
sbus_writeb((tmp >> 8) & 0xff,
&bp->r[chip]->r[CD180_TBPRH]);
sbus_writeb(tmp & 0xff, &bp->r[chip]->r[CD180_RBPRL]);
sbus_writeb(tmp & 0xff, &bp->r[chip]->r[CD180_TBPRL]);
baud = (baud + 5) / 10; /* Estimated CPS */
/* Two timer ticks seems enough to wakeup something like SLIP driver */
tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO;
port->wakeup_chars = (tmp < 0) ? 0 : ((tmp >= SERIAL_XMIT_SIZE) ?
SERIAL_XMIT_SIZE - 1 : tmp);
/* Receiver timeout will be transmission time for 1.5 chars */
tmp = (AURORA_TPS + AURORA_TPS/2 + baud/2) / baud;
tmp = (tmp > 0xff) ? 0xff : tmp;
sbus_writeb(tmp, &bp->r[chip]->r[CD180_RTPR]);
switch (C_CSIZE(tty)) {
case CS5:
cor1 |= COR1_5BITS;
break;
case CS6:
cor1 |= COR1_6BITS;
break;
case CS7:
cor1 |= COR1_7BITS;
break;
case CS8:
cor1 |= COR1_8BITS;
break;
}
if (C_CSTOPB(tty))
cor1 |= COR1_2SB;
cor1 |= COR1_IGNORE;
if (C_PARENB(tty)) {
cor1 |= COR1_NORMPAR;
if (C_PARODD(tty))
cor1 |= COR1_ODDP;
if (I_INPCK(tty))
cor1 &= ~COR1_IGNORE;
}
/* Set marking of some errors */
port->mark_mask = RCSR_OE | RCSR_TOUT;
if (I_INPCK(tty))
port->mark_mask |= RCSR_FE | RCSR_PE;
if (I_BRKINT(tty) || I_PARMRK(tty))
port->mark_mask |= RCSR_BREAK;
if (I_IGNPAR(tty))
port->mark_mask &= ~(RCSR_FE | RCSR_PE);
if (I_IGNBRK(tty)) {
port->mark_mask &= ~RCSR_BREAK;
if (I_IGNPAR(tty))
/* Real raw mode. Ignore all */
port->mark_mask &= ~RCSR_OE;
}
/* Enable Hardware Flow Control */
if (C_CRTSCTS(tty)) {
/*#ifdef AURORA_BRAIN_DAMAGED_CTS
port->SRER |= SRER_DSR | SRER_CTS;
mcor1 |= MCOR1_DSRZD | MCOR1_CTSZD;
mcor2 |= MCOR2_DSROD | MCOR2_CTSOD;
tty->hw_stopped = !(aurora_in(bp, CD180_MSVR) & (MSVR_CTS|MSVR_DSR));
#else*/
port->COR2 |= COR2_CTSAE;
/*#endif*/
if (bp->flags&AURORA_BOARD_DTR_FLOW_OK) {
mcor1 |= AURORA_RXTH;
}
}
/* Enable Software Flow Control. FIXME: I'm not sure about this */
/* Some people reported that it works, but I still doubt */
if (I_IXON(tty)) {
port->COR2 |= COR2_TXIBE;
cor3 |= (COR3_FCT | COR3_SCDE);
if (I_IXANY(tty))
port->COR2 |= COR2_IXM;
sbus_writeb(START_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR1]);
sbus_writeb(STOP_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR2]);
sbus_writeb(START_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR3]);
sbus_writeb(STOP_CHAR(tty),
&bp->r[chip]->r[CD180_SCHR4]);
}
if (!C_CLOCAL(tty)) {
/* Enable CD check */
port->SRER |= SRER_CD;
mcor1 |= MCOR1_CDZD;
mcor2 |= MCOR2_CDOD;
}
if (C_CREAD(tty))
/* Enable receiver */
port->SRER |= SRER_RXD;
/* Set input FIFO size (1-8 bytes) */
cor3 |= AURORA_RXFIFO;
/* Setting up CD180 channel registers */
sbus_writeb(cor1, &bp->r[chip]->r[CD180_COR1]);
sbus_writeb(port->COR2, &bp->r[chip]->r[CD180_COR2]);
sbus_writeb(cor3, &bp->r[chip]->r[CD180_COR3]);
/* Make CD180 know about registers change */
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_CORCHG1 | CCR_CORCHG2 | CCR_CORCHG3,
&bp->r[chip]->r[CD180_CCR]);
/* Setting up modem option registers */
sbus_writeb(mcor1, &bp->r[chip]->r[CD180_MCOR1]);
sbus_writeb(mcor2, &bp->r[chip]->r[CD180_MCOR2]);
/* Enable CD180 transmitter & receiver */
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_TXEN | CCR_RXEN, &bp->r[chip]->r[CD180_CCR]);
/* Enable interrupts */
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
/* And finally set RTS on */
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
#ifdef AURORA_DEBUG
printk("aurora_change_speed: end\n");
#endif
}
/* Must be called with interrupts enabled */
static int aurora_setup_port(struct Aurora_board *bp, struct Aurora_port *port)
{
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_setup_port: start %d\n",port_No(port));
#endif
if (port->flags & ASYNC_INITIALIZED)
return 0;
if (!port->xmit_buf) {
/* We may sleep in get_zeroed_page() */
unsigned long tmp;
if (!(tmp = get_zeroed_page(GFP_KERNEL)))
return -ENOMEM;
if (port->xmit_buf) {
free_page(tmp);
return -ERESTARTSYS;
}
port->xmit_buf = (unsigned char *) tmp;
}
save_flags(flags); cli();
if (port->tty)
clear_bit(TTY_IO_ERROR, &port->tty->flags);
#ifdef MODULE
if ((port->count == 1) && ((++bp->count) == 1))
bp->flags |= AURORA_BOARD_ACTIVE;
#endif
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
aurora_change_speed(bp, port);
port->flags |= ASYNC_INITIALIZED;
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_setup_port: end\n");
#endif
return 0;
}
/* Must be called with interrupts disabled */
static void aurora_shutdown_port(struct Aurora_board *bp, struct Aurora_port *port)
{
struct tty_struct *tty;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_shutdown_port: start\n");
#endif
if (!(port->flags & ASYNC_INITIALIZED))
return;
chip = AURORA_CD180(port_No(port));
#ifdef AURORA_REPORT_OVERRUN
printk("aurora%d: port %d: Total %ld overruns were detected.\n",
board_No(bp), port_No(port), port->overrun);
#endif
#ifdef AURORA_REPORT_FIFO
{
int i;
printk("aurora%d: port %d: FIFO hits [ ",
board_No(bp), port_No(port));
for (i = 0; i < 10; i++) {
printk("%ld ", port->hits[i]);
}
printk("].\n");
}
#endif
if (port->xmit_buf) {
free_page((unsigned long) port->xmit_buf);
port->xmit_buf = NULL;
}
if (!(tty = port->tty) || C_HUPCL(tty)) {
/* Drop DTR */
port->MSVR &= ~(bp->DTR|bp->RTS);
sbus_writeb(port->MSVR,
&bp->r[chip]->r[CD180_MSVR]);
}
/* Select port */
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
/* Reset port */
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_SOFTRESET, &bp->r[chip]->r[CD180_CCR]);
/* Disable all interrupts from this port */
port->SRER = 0;
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
if (tty)
set_bit(TTY_IO_ERROR, &tty->flags);
port->flags &= ~ASYNC_INITIALIZED;
#ifdef MODULE
if (--bp->count < 0) {
printk(KERN_DEBUG "aurora%d: aurora_shutdown_port: "
"bad board count: %d\n",
board_No(bp), bp->count);
bp->count = 0;
}
if (!bp->count)
bp->flags &= ~AURORA_BOARD_ACTIVE;
#endif
#ifdef AURORA_DEBUG
printk("aurora_shutdown_port: end\n");
#endif
}
static int block_til_ready(struct tty_struct *tty, struct file * filp,
struct Aurora_port *port)
{
DECLARE_WAITQUEUE(wait, current);
struct Aurora_board *bp = port_Board(port);
int retval;
int do_clocal = 0;
int CD;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("block_til_ready: start\n");
#endif
chip = AURORA_CD180(port_No(port));
/* If the device is in the middle of being closed, then block
* until it's done, and then try again.
*/
if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) {
interruptible_sleep_on(&port->close_wait);
if (port->flags & ASYNC_HUP_NOTIFY)
return -EAGAIN;
else
return -ERESTARTSYS;
}
/* If non-blocking mode is set, or the port is not enabled,
* then make the check up front and then exit.
*/
if ((filp->f_flags & O_NONBLOCK) ||
(tty->flags & (1 << TTY_IO_ERROR))) {
port->flags |= ASYNC_NORMAL_ACTIVE;
return 0;
}
if (C_CLOCAL(tty))
do_clocal = 1;
/* Block waiting for the carrier detect and the line to become
* free (i.e., not in use by the callout). While we are in
* this loop, info->count is dropped by one, so that
* rs_close() knows when to free things. We restore it upon
* exit, either normal or abnormal.
*/
retval = 0;
add_wait_queue(&port->open_wait, &wait);
cli();
if (!tty_hung_up_p(filp))
port->count--;
sti();
port->blocked_open++;
while (1) {
cli();
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
CD = sbus_readb(&bp->r[chip]->r[CD180_MSVR]) & MSVR_CD;
port->MSVR=bp->RTS;
/* auto drops DTR */
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
sti();
set_current_state(TASK_INTERRUPTIBLE);
if (tty_hung_up_p(filp) ||
!(port->flags & ASYNC_INITIALIZED)) {
if (port->flags & ASYNC_HUP_NOTIFY)
retval = -EAGAIN;
else
retval = -ERESTARTSYS;
break;
}
if (!(port->flags & ASYNC_CLOSING) &&
(do_clocal || CD))
break;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
break;
}
schedule();
}
current->state = TASK_RUNNING;
remove_wait_queue(&port->open_wait, &wait);
if (!tty_hung_up_p(filp))
port->count++;
port->blocked_open--;
if (retval)
return retval;
port->flags |= ASYNC_NORMAL_ACTIVE;
#ifdef AURORA_DEBUG
printk("block_til_ready: end\n");
#endif
return 0;
}
static int aurora_open(struct tty_struct * tty, struct file * filp)
{
int board;
int error;
struct Aurora_port * port;
struct Aurora_board * bp;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_open: start\n");
#endif
board = AURORA_BOARD(tty->index);
if (board > AURORA_NBOARD ||
!(aurora_board[board].flags & AURORA_BOARD_PRESENT)) {
#ifdef AURORA_DEBUG
printk("aurora_open: error board %d present %d\n",
board, aurora_board[board].flags & AURORA_BOARD_PRESENT);
#endif
return -ENODEV;
}
bp = &aurora_board[board];
port = aurora_port + board * AURORA_NPORT * AURORA_NCD180 + AURORA_PORT(tty->index);
if ((aurora_paranoia_check(port, tty->name, "aurora_open")) {
#ifdef AURORA_DEBUG
printk("aurora_open: error paranoia check\n");
#endif
return -ENODEV;
}
port->count++;
tty->driver_data = port;
port->tty = tty;
if ((error = aurora_setup_port(bp, port))) {
#ifdef AURORA_DEBUG
printk("aurora_open: error aurora_setup_port ret %d\n",error);
#endif
return error;
}
if ((error = block_til_ready(tty, filp, port))) {
#ifdef AURORA_DEBUG
printk("aurora_open: error block_til_ready ret %d\n",error);
#endif
return error;
}
#ifdef AURORA_DEBUG
printk("aurora_open: end\n");
#endif
return 0;
}
static void aurora_close(struct tty_struct * tty, struct file * filp)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned long timeout;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_close: start\n");
#endif
if (!port || (aurora_paranoia_check(port, tty->name, "close"))
return;
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
if (tty_hung_up_p(filp)) {
restore_flags(flags);
return;
}
bp = port_Board(port);
if ((tty->count == 1) && (port->count != 1)) {
printk(KERN_DEBUG "aurora%d: aurora_close: bad port count; "
"tty->count is 1, port count is %d\n",
board_No(bp), port->count);
port->count = 1;
}
if (--port->count < 0) {
printk(KERN_DEBUG "aurora%d: aurora_close: bad port "
"count for tty%d: %d\n",
board_No(bp), port_No(port), port->count);
port->count = 0;
}
if (port->count) {
restore_flags(flags);
return;
}
port->flags |= ASYNC_CLOSING;
/* Now we wait for the transmit buffer to clear; and we notify
* the line discipline to only process XON/XOFF characters.
*/
tty->closing = 1;
if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE){
#ifdef AURORA_DEBUG
printk("aurora_close: waiting to flush...\n");
#endif
tty_wait_until_sent(tty, port->closing_wait);
}
/* At this point we stop accepting input. To do this, we
* disable the receive line status interrupts, and tell the
* interrupt driver to stop checking the data ready bit in the
* line status register.
*/
port->SRER &= ~SRER_RXD;
if (port->flags & ASYNC_INITIALIZED) {
port->SRER &= ~SRER_TXRDY;
port->SRER |= SRER_TXEMPTY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
/*
* Before we drop DTR, make sure the UART transmitter
* has completely drained; this is especially
* important if there is a transmit FIFO!
*/
timeout = jiffies+HZ;
while(port->SRER & SRER_TXEMPTY) {
msleep_interruptible(jiffies_to_msecs(port->timeout));
if (time_after(jiffies, timeout))
break;
}
}
#ifdef AURORA_DEBUG
printk("aurora_close: shutdown_port\n");
#endif
aurora_shutdown_port(bp, port);
if (tty->driver->flush_buffer)
tty->driver->flush_buffer(tty);
tty_ldisc_flush(tty);
tty->closing = 0;
port->event = 0;
port->tty = 0;
if (port->blocked_open) {
if (port->close_delay) {
msleep_interruptible(jiffies_to_msecs(port->close_delay));
}
wake_up_interruptible(&port->open_wait);
}
port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
wake_up_interruptible(&port->close_wait);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_close: end\n");
#endif
}
static int aurora_write(struct tty_struct * tty,
const unsigned char *buf, int count)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
int c, total = 0;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_write: start %d\n",count);
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_write"))
return 0;
chip = AURORA_CD180(port_No(port));
bp = port_Board(port);
if (!tty || !port->xmit_buf || !tmp_buf)
return 0;
save_flags(flags);
while (1) {
cli();
c = min(count, min(SERIAL_XMIT_SIZE - port->xmit_cnt - 1,
SERIAL_XMIT_SIZE - port->xmit_head));
if (c <= 0) {
restore_flags(flags);
break;
}
memcpy(port->xmit_buf + port->xmit_head, buf, c);
port->xmit_head = (port->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
port->xmit_cnt += c;
restore_flags(flags);
buf += c;
count -= c;
total += c;
}
cli();
if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped &&
!(port->SRER & SRER_TXRDY)) {
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
}
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_write: end %d\n",total);
#endif
return total;
}
static void aurora_put_char(struct tty_struct * tty, unsigned char ch)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_put_char: start %c\n",ch);
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_put_char"))
return;
if (!tty || !port->xmit_buf)
return;
save_flags(flags); cli();
if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
restore_flags(flags);
return;
}
port->xmit_buf[port->xmit_head++] = ch;
port->xmit_head &= SERIAL_XMIT_SIZE - 1;
port->xmit_cnt++;
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_put_char: end\n");
#endif
}
static void aurora_flush_chars(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
unsigned char chip;
/*#ifdef AURORA_DEBUG
printk("aurora_flush_chars: start\n");
#endif*/
if ((aurora_paranoia_check(port, tty->name, "aurora_flush_chars"))
return;
chip = AURORA_CD180(port_No(port));
if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
!port->xmit_buf)
return;
save_flags(flags); cli();
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&port_Board(port)->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER,
&port_Board(port)->r[chip]->r[CD180_SRER]);
restore_flags(flags);
/*#ifdef AURORA_DEBUG
printk("aurora_flush_chars: end\n");
#endif*/
}
static int aurora_write_room(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
int ret;
#ifdef AURORA_DEBUG
printk("aurora_write_room: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_write_room"))
return 0;
ret = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
if (ret < 0)
ret = 0;
#ifdef AURORA_DEBUG
printk("aurora_write_room: end\n");
#endif
return ret;
}
static int aurora_chars_in_buffer(struct tty_struct *tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
if ((aurora_paranoia_check(port, tty->name, "aurora_chars_in_buffer"))
return 0;
return port->xmit_cnt;
}
static void aurora_flush_buffer(struct tty_struct *tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_flush_buffer: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_flush_buffer"))
return;
save_flags(flags); cli();
port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
restore_flags(flags);
tty_wakeup(tty);
#ifdef AURORA_DEBUG
printk("aurora_flush_buffer: end\n");
#endif
}
static int aurora_tiocmget(struct tty_struct *tty, struct file *file)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board * bp;
unsigned char status,chip;
unsigned int result;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_get_modem_info: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, __FUNCTION__))
return -ENODEV;
chip = AURORA_CD180(port_No(port));
bp = port_Board(port);
save_flags(flags); cli();
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
status = sbus_readb(&bp->r[chip]->r[CD180_MSVR]);
result = 0/*bp->r[chip]->r[AURORA_RI] & (1u << port_No(port)) ? 0 : TIOCM_RNG*/;
restore_flags(flags);
result |= ((status & bp->RTS) ? TIOCM_RTS : 0)
| ((status & bp->DTR) ? TIOCM_DTR : 0)
| ((status & MSVR_CD) ? TIOCM_CAR : 0)
| ((status & MSVR_DSR) ? TIOCM_DSR : 0)
| ((status & MSVR_CTS) ? TIOCM_CTS : 0);
#ifdef AURORA_DEBUG
printk("aurora_get_modem_info: end\n");
#endif
return result;
}
static int aurora_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned int arg;
unsigned long flags;
struct Aurora_board *bp = port_Board(port);
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_set_modem_info: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, __FUNCTION__))
return -ENODEV;
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
if (set & TIOCM_RTS)
port->MSVR |= bp->RTS;
if (set & TIOCM_DTR)
port->MSVR |= bp->DTR;
if (clear & TIOCM_RTS)
port->MSVR &= ~bp->RTS;
if (clear & TIOCM_DTR)
port->MSVR &= ~bp->DTR;
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_set_modem_info: end\n");
#endif
return 0;
}
static void aurora_send_break(struct Aurora_port * port, unsigned long length)
{
struct Aurora_board *bp = port_Board(port);
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_send_break: start\n");
#endif
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->break_length = AURORA_TPS / HZ * length;
port->COR2 |= COR2_ETC;
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->COR2, &bp->r[chip]->r[CD180_COR2]);
sbus_writeb(port->SRER, &bp->r[chip]->r[CD180_SRER]);
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_CORCHG2, &bp->r[chip]->r[CD180_CCR]);
aurora_wait_CCR(bp->r[chip]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_send_break: end\n");
#endif
}
static int aurora_set_serial_info(struct Aurora_port * port,
struct serial_struct * newinfo)
{
struct serial_struct tmp;
struct Aurora_board *bp = port_Board(port);
int change_speed;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_set_serial_info: start\n");
#endif
if (copy_from_user(&tmp, newinfo, sizeof(tmp)))
return -EFAULT;
#if 0
if ((tmp.irq != bp->irq) ||
(tmp.port != bp->base) ||
(tmp.type != PORT_CIRRUS) ||
(tmp.baud_base != (bp->oscfreq + CD180_TPC/2) / CD180_TPC) ||
(tmp.custom_divisor != 0) ||
(tmp.xmit_fifo_size != CD180_NFIFO) ||
(tmp.flags & ~AURORA_LEGAL_FLAGS))
return -EINVAL;
#endif
change_speed = ((port->flags & ASYNC_SPD_MASK) !=
(tmp.flags & ASYNC_SPD_MASK));
if (!capable(CAP_SYS_ADMIN)) {
if ((tmp.close_delay != port->close_delay) ||
(tmp.closing_wait != port->closing_wait) ||
((tmp.flags & ~ASYNC_USR_MASK) !=
(port->flags & ~ASYNC_USR_MASK)))
return -EPERM;
port->flags = ((port->flags & ~ASYNC_USR_MASK) |
(tmp.flags & ASYNC_USR_MASK));
} else {
port->flags = ((port->flags & ~ASYNC_FLAGS) |
(tmp.flags & ASYNC_FLAGS));
port->close_delay = tmp.close_delay;
port->closing_wait = tmp.closing_wait;
}
if (change_speed) {
save_flags(flags); cli();
aurora_change_speed(bp, port);
restore_flags(flags);
}
#ifdef AURORA_DEBUG
printk("aurora_set_serial_info: end\n");
#endif
return 0;
}
extern int aurora_get_serial_info(struct Aurora_port * port,
struct serial_struct * retinfo)
{
struct serial_struct tmp;
struct Aurora_board *bp = port_Board(port);
#ifdef AURORA_DEBUG
printk("aurora_get_serial_info: start\n");
#endif
if (!access_ok(VERIFY_WRITE, (void *) retinfo, sizeof(tmp)))
return -EFAULT;
memset(&tmp, 0, sizeof(tmp));
tmp.type = PORT_CIRRUS;
tmp.line = port - aurora_port;
tmp.port = 0;
tmp.irq = bp->irq;
tmp.flags = port->flags;
tmp.baud_base = (bp->oscfreq + CD180_TPC/2) / CD180_TPC;
tmp.close_delay = port->close_delay * HZ/100;
tmp.closing_wait = port->closing_wait * HZ/100;
tmp.xmit_fifo_size = CD180_NFIFO;
copy_to_user(retinfo, &tmp, sizeof(tmp));
#ifdef AURORA_DEBUG
printk("aurora_get_serial_info: end\n");
#endif
return 0;
}
static int aurora_ioctl(struct tty_struct * tty, struct file * filp,
unsigned int cmd, unsigned long arg)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
int retval;
#ifdef AURORA_DEBUG
printk("aurora_ioctl: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_ioctl"))
return -ENODEV;
switch (cmd) {
case TCSBRK: /* SVID version: non-zero arg --> no break */
retval = tty_check_change(tty);
if (retval)
return retval;
tty_wait_until_sent(tty, 0);
if (!arg)
aurora_send_break(port, HZ/4); /* 1/4 second */
return 0;
case TCSBRKP: /* support for POSIX tcsendbreak() */
retval = tty_check_change(tty);
if (retval)
return retval;
tty_wait_until_sent(tty, 0);
aurora_send_break(port, arg ? arg*(HZ/10) : HZ/4);
return 0;
case TIOCGSOFTCAR:
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *)arg);
case TIOCSSOFTCAR:
if (get_user(arg,(unsigned long *)arg))
return -EFAULT;
tty->termios->c_cflag =
((tty->termios->c_cflag & ~CLOCAL) |
(arg ? CLOCAL : 0));
return 0;
case TIOCGSERIAL:
return aurora_get_serial_info(port, (struct serial_struct *) arg);
case TIOCSSERIAL:
return aurora_set_serial_info(port, (struct serial_struct *) arg);
default:
return -ENOIOCTLCMD;
};
#ifdef AURORA_DEBUG
printk("aurora_ioctl: end\n");
#endif
return 0;
}
static void aurora_throttle(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_throttle: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_throttle"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->MSVR &= ~bp->RTS;
sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]);
udelay(1);
if (I_IXOFF(tty)) {
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_SSCH2, &bp->r[chip]->r[CD180_CCR]);
aurora_wait_CCR(bp->r[chip]);
}
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_throttle: end\n");
#endif
}
static void aurora_unthrottle(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_unthrottle: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_unthrottle"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->MSVR |= bp->RTS;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
if (I_IXOFF(tty)) {
aurora_wait_CCR(bp->r[chip]);
sbus_writeb(CCR_SSCH1,
&bp->r[chip]->r[CD180_CCR]);
aurora_wait_CCR(bp->r[chip]);
}
sbus_writeb(port->MSVR, &bp->r[chip]->r[CD180_MSVR]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_unthrottle: end\n");
#endif
}
static void aurora_stop(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_stop: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_stop"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
port->SRER &= ~SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_stop: end\n");
#endif
}
static void aurora_start(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
unsigned long flags;
unsigned char chip;
#ifdef AURORA_DEBUG
printk("aurora_start: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_start"))
return;
bp = port_Board(port);
chip = AURORA_CD180(port_No(port));
save_flags(flags); cli();
if (port->xmit_cnt && port->xmit_buf && !(port->SRER & SRER_TXRDY)) {
port->SRER |= SRER_TXRDY;
sbus_writeb(port_No(port) & 7,
&bp->r[chip]->r[CD180_CAR]);
udelay(1);
sbus_writeb(port->SRER,
&bp->r[chip]->r[CD180_SRER]);
}
restore_flags(flags);
#ifdef AURORA_DEBUG
printk("aurora_start: end\n");
#endif
}
/*
* This routine is called from the scheduler tqueue when the interrupt
* routine has signalled that a hangup has occurred. The path of
* hangup processing is:
*
* serial interrupt routine -> (scheduler tqueue) ->
* do_aurora_hangup() -> tty->hangup() -> aurora_hangup()
*
*/
static void do_aurora_hangup(void *private_)
{
struct Aurora_port *port = (struct Aurora_port *) private_;
struct tty_struct *tty;
#ifdef AURORA_DEBUG
printk("do_aurora_hangup: start\n");
#endif
tty = port->tty;
if (tty != NULL) {
tty_hangup(tty); /* FIXME: module removal race - AKPM */
#ifdef AURORA_DEBUG
printk("do_aurora_hangup: end\n");
#endif
}
}
static void aurora_hangup(struct tty_struct * tty)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
struct Aurora_board *bp;
#ifdef AURORA_DEBUG
printk("aurora_hangup: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_hangup"))
return;
bp = port_Board(port);
aurora_shutdown_port(bp, port);
port->event = 0;
port->count = 0;
port->flags &= ~ASYNC_NORMAL_ACTIVE;
port->tty = 0;
wake_up_interruptible(&port->open_wait);
#ifdef AURORA_DEBUG
printk("aurora_hangup: end\n");
#endif
}
static void aurora_set_termios(struct tty_struct * tty, struct termios * old_termios)
{
struct Aurora_port *port = (struct Aurora_port *) tty->driver_data;
unsigned long flags;
#ifdef AURORA_DEBUG
printk("aurora_set_termios: start\n");
#endif
if ((aurora_paranoia_check(port, tty->name, "aurora_set_termios"))
return;
if (tty->termios->c_cflag == old_termios->c_cflag &&
tty->termios->c_iflag == old_termios->c_iflag)
return;
save_flags(flags); cli();
aurora_change_speed(port_Board(port), port);
restore_flags(flags);
if ((old_termios->c_cflag & CRTSCTS) &&
!(tty->termios->c_cflag & CRTSCTS)) {
tty->hw_stopped = 0;
aurora_start(tty);
}
#ifdef AURORA_DEBUG
printk("aurora_set_termios: end\n");
#endif
}
static void do_aurora_bh(void)
{
run_task_queue(&tq_aurora);
}
static void do_softint(void *private_)
{
struct Aurora_port *port = (struct Aurora_port *) private_;
struct tty_struct *tty;
#ifdef AURORA_DEBUG
printk("do_softint: start\n");
#endif
tty = port->tty;
if (tty == NULL)
return;
if (test_and_clear_bit(RS_EVENT_WRITE_WAKEUP, &port->event)) {
tty_wakeup(tty);
}
#ifdef AURORA_DEBUG
printk("do_softint: end\n");
#endif
}
static const struct tty_operations aurora_ops = {
.open = aurora_open,
.close = aurora_close,
.write = aurora_write,
.put_char = aurora_put_char,
.flush_chars = aurora_flush_chars,
.write_room = aurora_write_room,
.chars_in_buffer = aurora_chars_in_buffer,
.flush_buffer = aurora_flush_buffer,
.ioctl = aurora_ioctl,
.throttle = aurora_throttle,
.unthrottle = aurora_unthrottle,
.set_termios = aurora_set_termios,
.stop = aurora_stop,
.start = aurora_start,
.hangup = aurora_hangup,
.tiocmget = aurora_tiocmget,
.tiocmset = aurora_tiocmset,
};
static int aurora_init_drivers(void)
{
int error;
int i;
#ifdef AURORA_DEBUG
printk("aurora_init_drivers: start\n");
#endif
tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL);
if (tmp_buf == NULL) {
printk(KERN_ERR "aurora: Couldn't get free page.\n");
return 1;
}
init_bh(AURORA_BH, do_aurora_bh);
aurora_driver = alloc_tty_driver(AURORA_INPORTS);
if (!aurora_driver) {
printk(KERN_ERR "aurora: Couldn't allocate tty driver.\n");
free_page((unsigned long) tmp_buf);
return 1;
}
aurora_driver->owner = THIS_MODULE;
aurora_driver->name = "ttyA";
aurora_driver->major = AURORA_MAJOR;
aurora_driver->type = TTY_DRIVER_TYPE_SERIAL;
aurora_driver->subtype = SERIAL_TYPE_NORMAL;
aurora_driver->init_termios = tty_std_termios;
aurora_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
aurora_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(aurora_driver, &aurora_ops);
error = tty_register_driver(aurora_driver);
if (error) {
put_tty_driver(aurora_driver);
free_page((unsigned long) tmp_buf);
printk(KERN_ERR "aurora: Couldn't register aurora driver, error = %d\n",
error);
return 1;
}
memset(aurora_port, 0, sizeof(aurora_port));
for (i = 0; i < AURORA_TNPORTS; i++) {
aurora_port[i].magic = AURORA_MAGIC;
aurora_port[i].tqueue.routine = do_softint;
aurora_port[i].tqueue.data = &aurora_port[i];
aurora_port[i].tqueue_hangup.routine = do_aurora_hangup;
aurora_port[i].tqueue_hangup.data = &aurora_port[i];
aurora_port[i].close_delay = 50 * HZ/100;
aurora_port[i].closing_wait = 3000 * HZ/100;
init_waitqueue_head(&aurora_port[i].open_wait);
init_waitqueue_head(&aurora_port[i].close_wait);
}
#ifdef AURORA_DEBUG
printk("aurora_init_drivers: end\n");
#endif
return 0;
}
static void aurora_release_drivers(void)
{
#ifdef AURORA_DEBUG
printk("aurora_release_drivers: start\n");
#endif
free_page((unsigned long)tmp_buf);
tty_unregister_driver(aurora_driver);
put_tty_driver(aurora_driver);
#ifdef AURORA_DEBUG
printk("aurora_release_drivers: end\n");
#endif
}
/*
* Called at boot time.
*
* You can specify IO base for up to RC_NBOARD cards,
* using line "riscom8=0xiobase1,0xiobase2,.." at LILO prompt.
* Note that there will be no probing at default
* addresses in this case.
*
*/
void __init aurora_setup(char *str, int *ints)
{
int i;
for(i=0;(i<ints[0])&&(i<4);i++) {
if (ints[i+1]) irqs[i]=ints[i+1];
}
}
static int __init aurora_real_init(void)
{
int found;
int i;
printk(KERN_INFO "aurora: Driver starting.\n");
if(aurora_init_drivers())
return -EIO;
found = aurora_probe();
if(!found) {
aurora_release_drivers();
printk(KERN_INFO "aurora: No Aurora Multiport boards detected.\n");
return -EIO;
} else {
printk(KERN_INFO "aurora: %d boards found.\n", found);
}
for (i = 0; i < found; i++) {
int ret = aurora_setup_board(&aurora_board[i]);
if (ret) {
#ifdef AURORA_DEBUG
printk(KERN_ERR "aurora_init: error aurora_setup_board ret %d\n",
ret);
#endif
return ret;
}
}
return 0;
}
int irq = 0;
int irq1 = 0;
int irq2 = 0;
int irq3 = 0;
module_param(irq , int, 0);
module_param(irq1, int, 0);
module_param(irq2, int, 0);
module_param(irq3, int, 0);
static int __init aurora_init(void)
{
if (irq ) irqs[0]=irq ;
if (irq1) irqs[1]=irq1;
if (irq2) irqs[2]=irq2;
if (irq3) irqs[3]=irq3;
return aurora_real_init();
}
static void __exit aurora_cleanup(void)
{
int i;
#ifdef AURORA_DEBUG
printk("cleanup_module: aurora_release_drivers\n");
#endif
aurora_release_drivers();
for (i = 0; i < AURORA_NBOARD; i++)
if (aurora_board[i].flags & AURORA_BOARD_PRESENT) {
aurora_shutdown_board(&aurora_board[i]);
aurora_release_io_range(&aurora_board[i]);
}
}
module_init(aurora_init);
module_exit(aurora_cleanup);
MODULE_LICENSE("GPL");
drivers/sbus/char/aurora.h deleted 100644 → 0
View file @ 6842ac64
/* $Id: aurora.h,v 1.6 2001/06/05 12:23:38 davem Exp $
* linux/drivers/sbus/char/aurora.h -- Aurora multiport driver
*
* Copyright (c) 1999 by Oliver Aldulea (oli@bv.ro)
*
* This code is based on the RISCom/8 multiport serial driver written
* by Dmitry Gorodchanin (pgmdsg@ibi.com), based on the Linux serial
* driver, written by Linus Torvalds, Theodore T'so and others.
* The Aurora multiport programming info was obtained mainly from the
* Cirrus Logic CD180 documentation (available on the web), and by
* doing heavy tests on the board. Many thanks to Eddie C. Dost for the
* help on the sbus interface.
*
* 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 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; 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.
*
* Revision 1.0
*
* This is the first public release.
*
* This version needs a lot of feedback. This is the version that works
* with _my_ board. My board is model 1600se, revision '@(#)1600se.fth
* 1.2 3/28/95 1'. The driver might work with your board, but I do not
* guarantee it. If you have _any_ type of board, I need to know if the
* driver works or not, I need to know exactly your board parameters
* (get them with 'cd /proc/openprom/iommu/sbus/sio16/; ls *; cat *')
* Also, I need your board revision code, which is written on the board.
* Send me the output of my driver too (it outputs through klogd).
*
* If the driver does not work, you can try enabling the debug options
* to see what's wrong or what should be done.
*
* I'm sorry about the alignment of the code. It was written in a
* 128x48 environment.
*
* I must say that I do not like Aurora Technologies' policy. I asked
* them to help me do this driver faster, but they ended by something
* like "don't call us, we'll call you", and I never heard anything
* from them. They told me "knowing the way the board works, I don't
* doubt you and others on the net will make the driver."
* The truth about this board is that it has nothing intelligent on it.
* If you want to say to somebody what kind of board you have, say that
* it uses Cirrus Logic processors (CD180). The power of the board is
* in those two chips. The rest of the board is the interface to the
* sbus and to the peripherals. Still, they did something smart: they
* reversed DTR and RTS to make on-board automatic hardware flow
* control usable.
* Thanks to Aurora Technologies for wasting my time, nerves and money.
*/
#ifndef __LINUX_AURORA_H
#define __LINUX_AURORA_H
#include <linux/serial.h>
#include <linux/serialP.h>
#ifdef __KERNEL__
/* This is the number of boards to support. I've only tested this driver with
* one board, so it might not work.
*/
#define AURORA_NBOARD 1
/* Useful ? Yes. But you can safely comment the warnings if they annoy you
* (let me say that again: the warnings in the code, not this define).
*/
#define AURORA_PARANOIA_CHECK
/* Well, after many lost nights, I found that the IRQ for this board is
* selected from four built-in values by writing some bits in the
* configuration register. This causes a little problem to occur: which
* IRQ to select ? Which one is the best for the user ? Well, I finally
* decided for the following algorithm: if the "bintr" value is not acceptable
* (not within type_1_irq[], then test the "intr" value, if that fails too,
* try each value from type_1_irq until succeded. Hope it's ok.
* You can safely reorder the irq's.
*/
#define TYPE_1_IRQS 4
unsigned char type_1_irq[TYPE_1_IRQS] = {
3, 5, 9, 13
};
/* I know something about another method of interrupt setting, but not enough.
* Also, this is for another type of board, so I first have to learn how to
* detect it.
#define TYPE_2_IRQS 3
unsigned char type_2_irq[TYPE_2_IRQS] = {
0, 0, 0 ** could anyone find these for me ? (see AURORA_ALLIRQ below) **
};
unsigned char type_2_mask[TYPE_2_IRQS] = {
32, 64, 128
};
*/
/* The following section should only be modified by those who know what
* they're doing (or don't, but want to help with some feedback). Modifying
* anything raises a _big_ probability for your system to hang, but the
* sacrifice worths. (I sacrificed my ext2fs many, many times...)
*/
/* This one tries to dump to console the name of almost every function called,
* and many other debugging info.
*/
#undef AURORA_DEBUG
/* These are the most dangerous and useful defines. They do printk() during
* the interrupt processing routine(s), so if you manage to get "flooded" by
* irq's, start thinking about the "Power off/on" button...
*/
#undef AURORA_INTNORM /* This one enables the "normal" messages, but some
* of them cause flood, so I preffered putting
* them under a define */
#undef AURORA_INT_DEBUG /* This one is really bad. */
/* Here's something helpful: after n irq's, the board will be disabled. This
* prevents irq flooding during debug (no need to think about power
* off/on anymore...)
*/
#define AURORA_FLOODPRO 10
/* This one helps finding which irq the board calls, in case of a strange/
* unsupported board. AURORA_INT_DEBUG should be enabled, because I don't
* think /proc/interrupts or any command will be available in case of an irq
* flood... "allirq" is the list of all free irq's.
*/
/*
#define AURORA_ALLIRQ 6
int allirq[AURORA_ALLIRQ]={
2,3,5,7,9,13
};
*/
/* These must not be modified. These values are assumed during the code for
* performance optimisations.
*/
#define AURORA_NCD180 2 /* two chips per board */
#define AURORA_NPORT 8 /* 8 ports per chip */
/* several utilities */
#define AURORA_BOARD(line) (((line) >> 4) & 0x01)
#define AURORA_CD180(line) (((line) >> 3) & 0x01)
#define AURORA_PORT(line) ((line) & 15)
#define AURORA_TNPORTS (AURORA_NBOARD*AURORA_NCD180*AURORA_NPORT)
/* Ticks per sec. Used for setting receiver timeout and break length */
#define AURORA_TPS 4000
#define AURORA_MAGIC 0x0A18
/* Yeah, after heavy testing I decided it must be 6.
* Sure, You can change it if needed.
*/
#define AURORA_RXFIFO 6 /* Max. receiver FIFO size (1-8) */
#define AURORA_RXTH 7
struct aurora_reg1 {
__volatile__ unsigned char r;
};
struct aurora_reg128 {
__volatile__ unsigned char r[128];
};
struct aurora_reg4 {
__volatile__ unsigned char r[4];
};
struct Aurora_board {
unsigned long flags;
struct aurora_reg1 * r0; /* This is the board configuration
* register (write-only). */
struct aurora_reg128 * r[2]; /* These are the registers for the
* two chips. */
struct aurora_reg4 * r3; /* These are used for hardware-based
* acknowledge. Software-based ack is
* not supported by CD180. */
unsigned int oscfreq; /* The on-board oscillator
* frequency, in Hz. */
unsigned char irq;
#ifdef MODULE
signed char count; /* counts the use of the board */
#endif
/* Values for the dtr_rts swapped mode. */
unsigned char DTR;
unsigned char RTS;
unsigned char MSVDTR;
unsigned char MSVRTS;
/* Values for hardware acknowledge. */
unsigned char ACK_MINT, ACK_TINT, ACK_RINT;
};
/* Board configuration register */
#define AURORA_CFG_ENABLE_IO 8
#define AURORA_CFG_ENABLE_IRQ 4
/* Board flags */
#define AURORA_BOARD_PRESENT 0x00000001
#define AURORA_BOARD_ACTIVE 0x00000002
#define AURORA_BOARD_TYPE_2 0x00000004 /* don't know how to
* detect this yet */
#define AURORA_BOARD_DTR_FLOW_OK 0x00000008
/* The story goes like this: Cirrus programmed the CD-180 chip to do automatic
* hardware flow control, and do it using CTS and DTR. CTS is ok, but, if you
* have a modem and the chip drops DTR, then the modem will drop the carrier
* (ain't that cute...). Luckily, the guys at Aurora decided to swap DTR and
* RTS, which makes the flow control usable. I hope that all the boards made
* by Aurora have these two signals swapped. If your's doesn't but you have a
* breakout box, you can try to reverse them yourself, then set the following
* flag.
*/
#undef AURORA_FORCE_DTR_FLOW
/* In fact, a few more words have to be said about hardware flow control.
* This driver handles "output" flow control through the on-board facility
* CTS Auto Enable. For the "input" flow control there are two cases when
* the flow should be controlled. The first case is when the kernel is so
* busy that it cannot process IRQ's in time; this flow control can only be
* activated by the on-board chip, and if the board has RTS and DTR swapped,
* this facility is usable. The second case is when the application is so
* busy that it cannot receive bytes from the kernel, and this flow must be
* activated by software. This second case is not yet implemented in this
* driver. Unfortunately, I estimate that the second case is the one that
* occurs the most.
*/
struct Aurora_port {
int magic;
int baud_base;
int flags;
struct tty_struct * tty;
int count;
int blocked_open;
long event;
int timeout;
int close_delay;
unsigned char * xmit_buf;
int custom_divisor;
int xmit_head;
int xmit_tail;
int xmit_cnt;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
struct tq_struct tqueue;
struct tq_struct tqueue_hangup;
short wakeup_chars;
short break_length;
unsigned short closing_wait;
unsigned char mark_mask;
unsigned char SRER;
unsigned char MSVR;
unsigned char COR2;
#ifdef AURORA_REPORT_OVERRUN
unsigned long overrun;
#endif
#ifdef AURORA_REPORT_FIFO
unsigned long hits[10];
#endif
};
#endif
#endif /*__LINUX_AURORA_H*/
drivers/sbus/char/bbc_i2c.c
View file @ c90c69a5
......@@ -187,19 +187,20 @@ static int wait_for_pin(struct bbc_i2c_bus *bp, u8 *status)
bp->waiting = 1;
add_wait_queue(&bp->wq, &wait);
while (limit-- > 0) {
u8 val;
set_current_state(TASK_INTERRUPTIBLE);
*status = val = readb(bp->i2c_control_regs + 0);
if ((val & I2C_PCF_PIN) == 0) {
unsigned long val;
val = wait_event_interruptible_timeout(
bp->wq,
(((*status = readb(bp->i2c_control_regs + 0))
& I2C_PCF_PIN) == 0),
msecs_to_jiffies(250));
if (val > 0) {
ret = 0;
break;
}
msleep_interruptible(250);
}
remove_wait_queue(&bp->wq, &wait);
bp->waiting = 0;
current->state = TASK_RUNNING;
return ret;
}
......@@ -340,7 +341,7 @@ static irqreturn_t bbc_i2c_interrupt(int irq, void *dev_id)
*/
if (bp->waiting &&
!(readb(bp->i2c_control_regs + 0x0) & I2C_PCF_PIN))
wake_up(&bp->wq);
wake_up_interruptible(&bp->wq);
return IRQ_HANDLED;
}
......
drivers/sbus/char/cd180.h deleted 100644 → 0
View file @ 6842ac64
/* Definitions for Cirrus Logic CL-CD180 8-port async mux chip */
#define CD180_NCH 8 /* Total number of channels */
#define CD180_TPC 16 /* Ticks per character */
#define CD180_NFIFO 8 /* TX FIFO size */
/* Global registers */
#define CD180_GFRCR 0x6b /* Global Firmware Revision Code Register */
#define CD180_SRCR 0x66 /* Service Request Configuration Register */
#define CD180_PPRH 0x70 /* Prescaler Period Register High */
#define CD180_PPRL 0x71 /* Prescaler Period Register Low */
#define CD180_MSMR 0x61 /* Modem Service Match Register */
#define CD180_TSMR 0x62 /* Transmit Service Match Register */
#define CD180_RSMR 0x63 /* Receive Service Match Register */
#define CD180_GSVR 0x40 /* Global Service Vector Register */
#define CD180_SRSR 0x65 /* Service Request Status Register */
#define CD180_GSCR 0x41 /* Global Service Channel Register */
#define CD180_CAR 0x64 /* Channel Access Register */
/* Indexed registers */
#define CD180_RDCR 0x07 /* Receive Data Count Register */
#define CD180_RDR 0x78 /* Receiver Data Register */
#define CD180_RCSR 0x7a /* Receiver Character Status Register */
#define CD180_TDR 0x7b /* Transmit Data Register */
#define CD180_EOSRR 0x7f /* End of Service Request Register */
/* Channel Registers */
#define CD180_SRER 0x02 /* Service Request Enable Register */
#define CD180_CCR 0x01 /* Channel Command Register */
#define CD180_COR1 0x03 /* Channel Option Register 1 */
#define CD180_COR2 0x04 /* Channel Option Register 2 */
#define CD180_COR3 0x05 /* Channel Option Register 3 */
#define CD180_CCSR 0x06 /* Channel Control Status Register */
#define CD180_RTPR 0x18 /* Receive Timeout Period Register */
#define CD180_RBPRH 0x31 /* Receive Bit Rate Period Register High */
#define CD180_RBPRL 0x32 /* Receive Bit Rate Period Register Low */
#define CD180_TBPRH 0x39 /* Transmit Bit Rate Period Register High */
#define CD180_TBPRL 0x3a /* Transmit Bit Rate Period Register Low */
#define CD180_SCHR1 0x09 /* Special Character Register 1 */
#define CD180_SCHR2 0x0a /* Special Character Register 2 */
#define CD180_SCHR3 0x0b /* Special Character Register 3 */
#define CD180_SCHR4 0x0c /* Special Character Register 4 */
#define CD180_MCR 0x12 /* Modem Change Register */
#define CD180_MCOR1 0x10 /* Modem Change Option 1 Register */
#define CD180_MCOR2 0x11 /* Modem Change Option 2 Register */
#define CD180_MSVR 0x28 /* Modem Signal Value Register */
#define CD180_MSVRTS 0x29 /* Modem Signal Value RTS */
#define CD180_MSVDTR 0x2a /* Modem Signal Value DTR */
/* Global Interrupt Vector Register (R/W) */
#define GSVR_ITMASK 0x07 /* Interrupt type mask */
#define GSVR_IT_MDM 0x01 /* Modem Signal Change Interrupt */
#define GSVR_IT_TX 0x02 /* Transmit Data Interrupt */
#define GSVR_IT_RGD 0x03 /* Receive Good Data Interrupt */
#define GSVR_IT_REXC 0x07 /* Receive Exception Interrupt */
/* Global Interrupt Channel Register (R/W) */
#define GSCR_CHAN 0x1c /* Channel Number Mask */
#define GSCR_CHAN_OFF 2 /* Channel Number Offset */
/* Channel Address Register (R/W) */
#define CAR_CHAN 0x07 /* Channel Number Mask */
/* Receive Character Status Register (R/O) */
#define RCSR_TOUT 0x80 /* Rx Timeout */
#define RCSR_SCDET 0x70 /* Special Character Detected Mask */
#define RCSR_NO_SC 0x00 /* No Special Characters Detected */
#define RCSR_SC_1 0x10 /* Special Char 1 (or 1 & 3) Detected */
#define RCSR_SC_2 0x20 /* Special Char 2 (or 2 & 4) Detected */
#define RCSR_SC_3 0x30 /* Special Char 3 Detected */
#define RCSR_SC_4 0x40 /* Special Char 4 Detected */
#define RCSR_BREAK 0x08 /* Break has been detected */
#define RCSR_PE 0x04 /* Parity Error */
#define RCSR_FE 0x02 /* Frame Error */
#define RCSR_OE 0x01 /* Overrun Error */
/* Channel Command Register (R/W) (commands in groups can be OR-ed) */
#define CCR_HARDRESET 0x81 /* Reset the chip */
#define CCR_SOFTRESET 0x80 /* Soft Channel Reset */
#define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */
#define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */
#define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */
#define CCR_SSCH1 0x21 /* Send Special Character 1 */
#define CCR_SSCH2 0x22 /* Send Special Character 2 */
#define CCR_SSCH3 0x23 /* Send Special Character 3 */
#define CCR_SSCH4 0x24 /* Send Special Character 4 */
#define CCR_TXEN 0x18 /* Enable Transmitter */
#define CCR_RXEN 0x12 /* Enable Receiver */
#define CCR_TXDIS 0x14 /* Disable Transmitter */
#define CCR_RXDIS 0x11 /* Disable Receiver */
/* Service Request Enable Register (R/W) */
#define SRER_DSR 0x80 /* Enable interrupt on DSR change */
#define SRER_CD 0x40 /* Enable interrupt on CD change */
#define SRER_CTS 0x20 /* Enable interrupt on CTS change */
#define SRER_RXD 0x10 /* Enable interrupt on Receive Data */
#define SRER_RXSC 0x08 /* Enable interrupt on Receive Spec. Char */
#define SRER_TXRDY 0x04 /* Enable interrupt on TX FIFO empty */
#define SRER_TXEMPTY 0x02 /* Enable interrupt on TX completely empty */
#define SRER_RET 0x01 /* Enable interrupt on RX Exc. Timeout */
/* Channel Option Register 1 (R/W) */
#define COR1_ODDP 0x80 /* Odd Parity */
#define COR1_PARMODE 0x60 /* Parity Mode mask */
#define COR1_NOPAR 0x00 /* No Parity */
#define COR1_FORCEPAR 0x20 /* Force Parity */
#define COR1_NORMPAR 0x40 /* Normal Parity */
#define COR1_IGNORE 0x10 /* Ignore Parity on RX */
#define COR1_STOPBITS 0x0c /* Number of Stop Bits */
#define COR1_1SB 0x00 /* 1 Stop Bit */
#define COR1_15SB 0x04 /* 1.5 Stop Bits */
#define COR1_2SB 0x08 /* 2 Stop Bits */
#define COR1_CHARLEN 0x03 /* Character Length */
#define COR1_5BITS 0x00 /* 5 bits */
#define COR1_6BITS 0x01 /* 6 bits */
#define COR1_7BITS 0x02 /* 7 bits */
#define COR1_8BITS 0x03 /* 8 bits */
/* Channel Option Register 2 (R/W) */
#define COR2_IXM 0x80 /* Implied XON mode */
#define COR2_TXIBE 0x40 /* Enable In-Band (XON/XOFF) Flow Control */
#define COR2_ETC 0x20 /* Embedded Tx Commands Enable */
#define COR2_LLM 0x10 /* Local Loopback Mode */
#define COR2_RLM 0x08 /* Remote Loopback Mode */
#define COR2_RTSAO 0x04 /* RTS Automatic Output Enable */
#define COR2_CTSAE 0x02 /* CTS Automatic Enable */
#define COR2_DSRAE 0x01 /* DSR Automatic Enable */
/* Channel Option Register 3 (R/W) */
#define COR3_XONCH 0x80 /* XON is a pair of characters (1 & 3) */
#define COR3_XOFFCH 0x40 /* XOFF is a pair of characters (2 & 4) */
#define COR3_FCT 0x20 /* Flow-Control Transparency Mode */
#define COR3_SCDE 0x10 /* Special Character Detection Enable */
#define COR3_RXTH 0x0f /* RX FIFO Threshold value (1-8) */
/* Channel Control Status Register (R/O) */
#define CCSR_RXEN 0x80 /* Receiver Enabled */
#define CCSR_RXFLOFF 0x40 /* Receive Flow Off (XOFF was sent) */
#define CCSR_RXFLON 0x20 /* Receive Flow On (XON was sent) */
#define CCSR_TXEN 0x08 /* Transmitter Enabled */
#define CCSR_TXFLOFF 0x04 /* Transmit Flow Off (got XOFF) */
#define CCSR_TXFLON 0x02 /* Transmit Flow On (got XON) */
/* Modem Change Option Register 1 (R/W) */
#define MCOR1_DSRZD 0x80 /* Detect 0->1 transition of DSR */
#define MCOR1_CDZD 0x40 /* Detect 0->1 transition of CD */
#define MCOR1_CTSZD 0x20 /* Detect 0->1 transition of CTS */
#define MCOR1_DTRTH 0x0f /* Auto DTR flow control Threshold (1-8) */
#define MCOR1_NODTRFC 0x0 /* Automatic DTR flow control disabled */
/* Modem Change Option Register 2 (R/W) */
#define MCOR2_DSROD 0x80 /* Detect 1->0 transition of DSR */
#define MCOR2_CDOD 0x40 /* Detect 1->0 transition of CD */
#define MCOR2_CTSOD 0x20 /* Detect 1->0 transition of CTS */
/* Modem Change Register (R/W) */
#define MCR_DSRCHG 0x80 /* DSR Changed */
#define MCR_CDCHG 0x40 /* CD Changed */
#define MCR_CTSCHG 0x20 /* CTS Changed */
/* Modem Signal Value Register (R/W) */
#define MSVR_DSR 0x80 /* Current state of DSR input */
#define MSVR_CD 0x40 /* Current state of CD input */
#define MSVR_CTS 0x20 /* Current state of CTS input */
#define MSVR_DTR 0x02 /* Current state of DTR output */
#define MSVR_RTS 0x01 /* Current state of RTS output */
/* Service Request Status Register */
#define SRSR_CMASK 0xC0 /* Current Service Context Mask */
#define SRSR_CNONE 0x00 /* Not in a service context */
#define SRSR_CRX 0x40 /* Rx Context */
#define SRSR_CTX 0x80 /* Tx Context */
#define SRSR_CMDM 0xC0 /* Modem Context */
#define SRSR_ANYINT 0x6F /* Any interrupt flag */
#define SRSR_RINT 0x10 /* Receive Interrupt */
#define SRSR_TINT 0x04 /* Transmit Interrupt */
#define SRSR_MINT 0x01 /* Modem Interrupt */
#define SRSR_REXT 0x20 /* Receive External Interrupt */
#define SRSR_TEXT 0x08 /* Transmit External Interrupt */
#define SRSR_MEXT 0x02 /* Modem External Interrupt */
/* Service Request Configuration Register */
#define SRCR_PKGTYPE 0x80
#define SRCR_REGACKEN 0x40
#define SRCR_DAISYEN 0x20
#define SRCR_GLOBPRI 0x10
#define SRCR_UNFAIR 0x08
#define SRCR_AUTOPRI 0x02
#define SRCR_PRISEL 0x01
/* Values for register-based Interrupt ACKs */
#define CD180_ACK_MINT 0x75 /* goes to MSMR */
#define CD180_ACK_TINT 0x76 /* goes to TSMR */
#define CD180_ACK_RINT 0x77 /* goes to RSMR */
/* Escape characters */
#define CD180_C_ESC 0x00 /* Escape character */
#define CD180_C_SBRK 0x81 /* Start sending BREAK */
#define CD180_C_DELAY 0x82 /* Delay output */
#define CD180_C_EBRK 0x83 /* Stop sending BREAK */
drivers/sbus/char/uctrl.c
View file @ c90c69a5
......@@ -364,6 +364,7 @@ static int __init ts102_uctrl_init(void)
struct linux_prom_irqs tmp_irq[2];
unsigned int vaddr[2] = { 0, 0 };
int tmpnode, uctrlnode = prom_getchild(prom_root_node);
int err;
tmpnode = prom_searchsiblings(uctrlnode, "obio");
......@@ -389,7 +390,12 @@ static int __init ts102_uctrl_init(void)
if(!driver->irq)
driver->irq = tmp_irq[0].pri;
request_irq(driver->irq, uctrl_interrupt, 0, "uctrl", driver);
err = request_irq(driver->irq, uctrl_interrupt, 0, "uctrl", driver);
if (err) {
printk("%s: unable to register irq %d\n",
__FUNCTION__, driver->irq);
return err;
}
if (misc_register(&uctrl_dev)) {
printk("%s: unable to get misc minor %d\n",
......
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