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2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 | /* $Id: aurora.c,v 1.10 2000/12/07 04:35:38 anton Exp $ * linux/drivers/sbus/char/aurora.c -- 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. * * 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. */ #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/tqueue.h> #include <linux/delay.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/oplib.h> #include <asm/system.h> #include <asm/segment.h> #include <asm/bitops.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 #ifndef MIN #define MIN(a,b) ((a) < (b) ? (a) : (b)) #endif #define AURORA_TYPE_NORMAL 1 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; static DECLARE_MUTEX(tmp_buf_sem); static int aurora_refcount = 0; static struct tty_struct * aurora_table[AURORA_TNPORTS] = { NULL, }; static struct termios * aurora_termios[AURORA_TNPORTS] = { NULL, }; static struct termios * aurora_termios_locked[AURORA_TNPORTS] = { NULL, }; DECLARE_TASK_QUEUE(tq_aurora); /* Yes, 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. */ static unsigned long baud_table[] = { 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 0, }; static inline int aurora_paranoia_check(struct Aurora_port const * port, kdev_t device, 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, kdevname(device), routine); return 1; } if (port->magic != AURORA_MAGIC) { printk(badmagic, kdevname(device), routine); return 1; } #endif return 0; } /* * * Service functions for aurora driver. * */ /* Get board number from pointer */ extern inline int board_No (struct Aurora_board const * bp) { return bp - aurora_board; } /* Get port number from pointer */ extern inline int port_No (struct Aurora_port const * port) { return AURORA_PORT(port - aurora_port); } /* Get pointer to board from pointer to port */ extern 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 */ extern 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 */ extern 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; i > jiffies; ) ; #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 void aurora_interrupt(int irq, void * dev_id, struct pt_regs * regs); /* 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, SA_SHIRQ, "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, SA_SHIRQ, "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, SA_SHIRQ, "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, SA_SHIRQ, "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); } extern 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 if (!((port->flags & ASYNC_CALLOUT_ACTIVE) && (port->flags & ASYNC_CALLOUT_NOHUP))) { MOD_INC_USE_COUNT; if (schedule_task(&port->tqueue_hangup) == 0) MOD_DEC_USE_COUNT; } } /* 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 void aurora_interrupt(int irq, void * dev_id, struct pt_regs * regs) { 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; /* 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; * 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 } #ifdef AURORA_INT_DEBUG static void aurora_timer (unsigned long ignored); static struct timer_list aurora_poll_timer = { NULL, NULL, 0, 0, aurora_timer }; 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, SA_SHIRQ, "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, SA_SHIRQ, "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 = C_BAUD(tty); if (baud & CBAUDEX) { baud &= ~CBAUDEX; if (baud < 1 || baud > 2) port->tty->termios->c_cflag &= ~CBAUDEX; else baud += 15; } if (baud == 15) { if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) baud ++; if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) baud += 2; } /* Select port on the board */ sbus_writeb(port_No(port) & 7, &bp->r[chip]->r[CD180_CAR]); udelay(1); if (!baud_table[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 dependant things. */ /* Set baud rate for port. */ tmp = (((bp->oscfreq + baud_table[baud]/2) / baud_table[baud] + CD180_TPC/2) / CD180_TPC); /* tmp = (bp->oscfreq/7)/baud_table[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_table[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_free_page() */ unsigned long tmp; if (!(tmp = get_free_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) { MOD_INC_USE_COUNT; if((++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; } MOD_DEC_USE_COUNT; 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))) { if (port->flags & ASYNC_CALLOUT_ACTIVE) return -EBUSY; port->flags |= ASYNC_NORMAL_ACTIVE; return 0; } if (port->flags & ASYNC_CALLOUT_ACTIVE) { if (port->normal_termios.c_cflag & CLOCAL) do_clocal = 1; } else { 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; if (!(port->flags & ASYNC_CALLOUT_ACTIVE)) { 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_CALLOUT_ACTIVE) &&*/ !(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(MINOR(tty->device)); 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(MINOR(tty->device)); if (aurora_paranoia_check(port, tty->device, "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; } if ((port->count == 1) && (port->flags & ASYNC_SPLIT_TERMIOS)) { *tty->termios = port->normal_termios; save_flags(flags); cli(); aurora_change_speed(bp, port); restore_flags(flags); } port->session = current->session; port->pgrp = current->pgrp; #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->device, "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; /* Save the termios structure, since this port may have * separate termios for callout and dialin. */ if (port->flags & ASYNC_NORMAL_ACTIVE) port->normal_termios = *tty->termios; /* if (port->flags & ASYNC_CALLOUT_ACTIVE) port->callout_termios = *tty->termios;*/ /* 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) { current->state = TASK_INTERRUPTIBLE; schedule_timeout(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); if (tty->ldisc.flush_buffer) tty->ldisc.flush_buffer(tty); tty->closing = 0; port->event = 0; port->tty = 0; if (port->blocked_open) { if (port->close_delay) { current->state = TASK_INTERRUPTIBLE; schedule_timeout(port->close_delay); } wake_up_interruptible(&port->open_wait); } port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_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, int from_user, 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->device, "aurora_write")) return 0; chip = AURORA_CD180(port_No(port)); bp = port_Board(port); if (!tty || !port->xmit_buf || !tmp_buf) return 0; if (from_user) down(&tmp_buf_sem); 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) break; if (from_user) { copy_from_user(tmp_buf, buf, c); c = MIN(c, MIN(SERIAL_XMIT_SIZE - port->xmit_cnt - 1, SERIAL_XMIT_SIZE - port->xmit_head)); memcpy(port->xmit_buf + port->xmit_head, tmp_buf, c); } else 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; } if (from_user) up(&tmp_buf_sem); 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->device, "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->device, "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->device, "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->device, "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->device, "aurora_flush_buffer")) return; save_flags(flags); cli(); port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; restore_flags(flags); wake_up_interruptible(&tty->write_wait); if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) (tty->ldisc.write_wakeup)(tty); #ifdef AURORA_DEBUG printk("aurora_flush_buffer: end\n"); #endif } static int aurora_get_modem_info(struct Aurora_port * port, unsigned int *value) { 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 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); put_user(result,(unsigned long *) value); #ifdef AURORA_DEBUG printk("aurora_get_modem_info: end\n"); #endif return 0; } static int aurora_set_modem_info(struct Aurora_port * port, unsigned int cmd, unsigned int *value) { int error; 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 error = get_user(arg, value); if (error) return error; chip = AURORA_CD180(port_No(port)); switch (cmd) { case TIOCMBIS: if (arg & TIOCM_RTS) port->MSVR |= bp->RTS; if (arg & TIOCM_DTR) port->MSVR |= bp->DTR; break; case TIOCMBIC: if (arg & TIOCM_RTS) port->MSVR &= ~bp->RTS; if (arg & TIOCM_DTR) port->MSVR &= ~bp->DTR; break; case TIOCMSET: port->MSVR = (arg & TIOCM_RTS) ? (port->MSVR | bp->RTS) : (port->MSVR & ~bp->RTS); port->MSVR = (arg & TIOCM_DTR) ? (port->MSVR | bp->RTS) : (port->MSVR & ~bp->RTS); break; default: return -EINVAL; }; save_flags(flags); cli(); 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; int error; #ifdef AURORA_DEBUG printk("aurora_set_serial_info: start\n"); #endif error = verify_area(VERIFY_READ, (void *) newinfo, sizeof(tmp)); if (error) return error; copy_from_user(&tmp, newinfo, sizeof(tmp)); #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); int error; #ifdef AURORA_DEBUG printk("aurora_get_serial_info: start\n"); #endif error = verify_area(VERIFY_WRITE, (void *) retinfo, sizeof(tmp)); if (error) return error; 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 error; int retval; #ifdef AURORA_DEBUG printk("aurora_ioctl: start\n"); #endif if (aurora_paranoia_check(port, tty->device, "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: error = verify_area(VERIFY_WRITE, (void *) arg, sizeof(long)); if (error) return error; put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg); return 0; case TIOCSSOFTCAR: retval = get_user(arg,(unsigned long *) arg); if (retval) return retval; tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0)); return 0; case TIOCMGET: error = verify_area(VERIFY_WRITE, (void *) arg, sizeof(unsigned int)); if (error) return error; return aurora_get_modem_info(port, (unsigned int *) arg); case TIOCMBIS: case TIOCMBIC: case TIOCMSET: return aurora_set_modem_info(port, cmd, (unsigned int *) arg); 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->device, "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->device, "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->device, "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->device, "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 } MOD_DEC_USE_COUNT; } 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->device, "aurora_hangup")) return; bp = port_Board(port); aurora_shutdown_port(bp, port); port->event = 0; port->count = 0; port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_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->device, "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)) { if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) (tty->ldisc.write_wakeup)(tty); wake_up_interruptible(&tty->write_wait); } #ifdef AURORA_DEBUG printk("do_softint: end\n"); #endif } 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_free_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); /* memset(IRQ_to_board, 0, sizeof(IRQ_to_board));*/ memset(&aurora_driver, 0, sizeof(aurora_driver)); aurora_driver.magic = TTY_DRIVER_MAGIC; aurora_driver.name = "ttyA"; aurora_driver.major = AURORA_MAJOR; aurora_driver.num = AURORA_TNPORTS; aurora_driver.type = TTY_DRIVER_TYPE_SERIAL; aurora_driver.subtype = AURORA_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; aurora_driver.refcount = &aurora_refcount; aurora_driver.table = aurora_table; aurora_driver.termios = aurora_termios; aurora_driver.termios_locked = aurora_termios_locked; aurora_driver.open = aurora_open; aurora_driver.close = aurora_close; aurora_driver.write = aurora_write; aurora_driver.put_char = aurora_put_char; aurora_driver.flush_chars = aurora_flush_chars; aurora_driver.write_room = aurora_write_room; aurora_driver.chars_in_buffer = aurora_chars_in_buffer; aurora_driver.flush_buffer = aurora_flush_buffer; aurora_driver.ioctl = aurora_ioctl; aurora_driver.throttle = aurora_throttle; aurora_driver.unthrottle = aurora_unthrottle; aurora_driver.set_termios = aurora_set_termios; aurora_driver.stop = aurora_stop; aurora_driver.start = aurora_start; aurora_driver.hangup = aurora_hangup; error = tty_register_driver(&aurora_driver); if (error) { 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].normal_termios = aurora_driver.init_termios; 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); #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_PARM(irq , "i"); MODULE_PARM(irq1, "i"); MODULE_PARM(irq2, "i"); MODULE_PARM(irq3, "i"); 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); |