diff options
| -rw-r--r-- | drivers/char/ip2/i2ellis.c | 32 | ||||
| -rw-r--r-- | drivers/char/ip2/i2ellis.h | 2 | ||||
| -rw-r--r-- | drivers/char/ip2/ip2main.c | 415 |
3 files changed, 198 insertions, 251 deletions
diff --git a/drivers/char/ip2/i2ellis.c b/drivers/char/ip2/i2ellis.c index 3601017f58c..29db44de399 100644 --- a/drivers/char/ip2/i2ellis.c +++ b/drivers/char/ip2/i2ellis.c @@ -69,38 +69,6 @@ static DEFINE_RWLOCK(Dl_spinlock); //======================================================= //****************************************************************************** -// Function: iiEllisInit() -// Parameters: None -// -// Returns: Nothing -// -// Description: -// -// This routine performs any required initialization of the iiEllis subsystem. -// -//****************************************************************************** -static void -iiEllisInit(void) -{ -} - -//****************************************************************************** -// Function: iiEllisCleanup() -// Parameters: None -// -// Returns: Nothing -// -// Description: -// -// This routine performs any required cleanup of the iiEllis subsystem. -// -//****************************************************************************** -static void -iiEllisCleanup(void) -{ -} - -//****************************************************************************** // Function: iiSetAddress(pB, address, delay) // Parameters: pB - pointer to the board structure // address - the purported I/O address of the board diff --git a/drivers/char/ip2/i2ellis.h b/drivers/char/ip2/i2ellis.h index c88a64e527a..fb6df245601 100644 --- a/drivers/char/ip2/i2ellis.h +++ b/drivers/char/ip2/i2ellis.h @@ -511,7 +511,6 @@ typedef void (*delayFunc_t)(unsigned int); // // Initialization of a board & structure is in four (five!) parts: // -// 0) iiEllisInit() - Initialize iiEllis subsystem. // 1) iiSetAddress() - Define the board address & delay function for a board. // 2) iiReset() - Reset the board (provided it exists) // -- Note you may do this to several boards -- @@ -523,7 +522,6 @@ typedef void (*delayFunc_t)(unsigned int); // loadware. To change loadware, you must begin again with step 2, resetting // the board again (step 1 not needed). -static void iiEllisInit(void); static int iiSetAddress(i2eBordStrPtr, int, delayFunc_t ); static int iiReset(i2eBordStrPtr); static int iiResetDelay(i2eBordStrPtr); diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c index 098c9de3022..39269d19a02 100644 --- a/drivers/char/ip2/ip2main.c +++ b/drivers/char/ip2/ip2main.c @@ -314,31 +314,27 @@ MODULE_PARM_DESC(poll_only, "Do not use card interrupts"); /* for sysfs class support */ static struct class *ip2_class; -// Some functions to keep track of what irq's we have +/* Some functions to keep track of what irqs we have */ -static int -is_valid_irq(int irq) +static int __init is_valid_irq(int irq) { int *i = Valid_Irqs; - while ((*i != 0) && (*i != irq)) { + while (*i != 0 && *i != irq) i++; - } - return (*i); + + return *i; } -static void -mark_requested_irq( char irq ) +static void __init mark_requested_irq(char irq) { rirqs[iindx++] = irq; } -#ifdef MODULE -static int -clear_requested_irq( char irq ) +static int __exit clear_requested_irq(char irq) { int i; - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { + for (i = 0; i < IP2_MAX_BOARDS; ++i) { if (rirqs[i] == irq) { rirqs[i] = 0; return 1; @@ -346,17 +342,15 @@ clear_requested_irq( char irq ) } return 0; } -#endif -static int -have_requested_irq( char irq ) +static int have_requested_irq(char irq) { - // array init to zeros so 0 irq will not be requested as a side effect + /* array init to zeros so 0 irq will not be requested as a side + * effect */ int i; - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { + for (i = 0; i < IP2_MAX_BOARDS; ++i) if (rirqs[i] == irq) return 1; - } return 0; } @@ -380,46 +374,44 @@ static void __exit ip2_cleanup_module(void) int err; int i; -#ifdef IP2DEBUG_INIT - printk (KERN_DEBUG "Unloading %s: version %s\n", pcName, pcVersion ); -#endif /* Stop poll timer if we had one. */ - if ( TimerOn ) { - del_timer ( &PollTimer ); + if (TimerOn) { + del_timer(&PollTimer); TimerOn = 0; } /* Reset the boards we have. */ - for( i = 0; i < IP2_MAX_BOARDS; ++i ) { - if ( i2BoardPtrTable[i] ) { - iiReset( i2BoardPtrTable[i] ); - } - } + for (i = 0; i < IP2_MAX_BOARDS; i++) + if (i2BoardPtrTable[i]) + iiReset(i2BoardPtrTable[i]); /* The following is done at most once, if any boards were installed. */ - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { - if ( i2BoardPtrTable[i] ) { - iiResetDelay( i2BoardPtrTable[i] ); + for (i = 0; i < IP2_MAX_BOARDS; i++) { + if (i2BoardPtrTable[i]) { + iiResetDelay(i2BoardPtrTable[i]); /* free io addresses and Tibet */ - release_region( ip2config.addr[i], 8 ); + release_region(ip2config.addr[i], 8); device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i)); - device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, 4 * i + 1)); + device_destroy(ip2_class, MKDEV(IP2_IPL_MAJOR, + 4 * i + 1)); } /* Disable and remove interrupt handler. */ - if ( (ip2config.irq[i] > 0) && have_requested_irq(ip2config.irq[i]) ) { - free_irq ( ip2config.irq[i], (void *)&pcName); - clear_requested_irq( ip2config.irq[i]); + if (ip2config.irq[i] > 0 && + have_requested_irq(ip2config.irq[i])) { + free_irq(ip2config.irq[i], (void *)&pcName); + clear_requested_irq(ip2config.irq[i]); } } class_destroy(ip2_class); - if ( ( err = tty_unregister_driver ( ip2_tty_driver ) ) ) { - printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", err); - } + err = tty_unregister_driver(ip2_tty_driver); + if (err) + printk(KERN_ERR "IP2: failed to unregister tty driver (%d)\n", + err); put_tty_driver(ip2_tty_driver); unregister_chrdev(IP2_IPL_MAJOR, pcIpl); remove_proc_entry("ip2mem", NULL); - // free memory + /* free memory */ for (i = 0; i < IP2_MAX_BOARDS; i++) { void *pB; #ifdef CONFIG_PCI @@ -431,20 +423,14 @@ static void __exit ip2_cleanup_module(void) #endif pB = i2BoardPtrTable[i]; if (pB != NULL) { - kfree ( pB ); + kfree(pB); i2BoardPtrTable[i] = NULL; } - if ((DevTableMem[i]) != NULL ) { - kfree ( DevTableMem[i] ); + if (DevTableMem[i] != NULL) { + kfree(DevTableMem[i]); DevTableMem[i] = NULL; } } - - /* Cleanup the iiEllis subsystem. */ - iiEllisCleanup(); -#ifdef IP2DEBUG_INIT - printk (KERN_DEBUG "IP2 Unloaded\n" ); -#endif } module_exit(ip2_cleanup_module); @@ -552,14 +538,13 @@ static int __init ip2_setup(char *str) __setup("ip2=", ip2_setup); #endif /* !MODULE */ -static int ip2_loadmain(void) +static int __init ip2_loadmain(void) { int i, j, box; int err = 0; - static int loaded; i2eBordStrPtr pB = NULL; int rc = -1; - static struct pci_dev *pci_dev_i = NULL; + struct pci_dev *pdev = NULL; const struct firmware *fw = NULL; if (poll_only) { @@ -567,119 +552,108 @@ static int ip2_loadmain(void) irq[0] = irq[1] = irq[2] = irq[3] = poll_only = 0; } - ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0 ); + ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_ENTER, 0); /* process command line arguments to modprobe or insmod i.e. iop & irqp */ /* irqp and iop should ALWAYS be specified now... But we check them individually just to be sure, anyways... */ - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { + for (i = 0; i < IP2_MAX_BOARDS; ++i) { ip2config.addr[i] = io[i]; if (irq[i] >= 0) ip2config.irq[i] = irq[i]; else ip2config.irq[i] = 0; - // This is a little bit of a hack. If poll_only=1 on command - // line back in ip2.c OR all IRQs on all specified boards are - // explicitly set to 0, then drop to poll only mode and override - // PCI or EISA interrupts. This superceeds the old hack of - // triggering if all interrupts were zero (like da default). - // Still a hack but less prone to random acts of terrorism. - // - // What we really should do, now that the IRQ default is set - // to -1, is to use 0 as a hard coded, do not probe. - // - // /\/\|=mhw=|\/\/ + /* This is a little bit of a hack. If poll_only=1 on command + line back in ip2.c OR all IRQs on all specified boards are + explicitly set to 0, then drop to poll only mode and override + PCI or EISA interrupts. This superceeds the old hack of + triggering if all interrupts were zero (like da default). + Still a hack but less prone to random acts of terrorism. + + What we really should do, now that the IRQ default is set + to -1, is to use 0 as a hard coded, do not probe. + + /\/\|=mhw=|\/\/ + */ poll_only |= irq[i]; } poll_only = !poll_only; /* Announce our presence */ - printk( KERN_INFO "%s version %s\n", pcName, pcVersion ); - - // ip2 can be unloaded and reloaded for no good reason - // we can't let that happen here or bad things happen - // second load hoses board but not system - fixme later - if (loaded) { - printk( KERN_INFO "Still loaded\n" ); - return 0; - } - loaded++; + printk(KERN_INFO "%s version %s\n", pcName, pcVersion); ip2_tty_driver = alloc_tty_driver(IP2_MAX_PORTS); if (!ip2_tty_driver) return -ENOMEM; - /* Initialise the iiEllis subsystem. */ - iiEllisInit(); - /* Initialise all the boards we can find (up to the maximum). */ - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { - switch ( ip2config.addr[i] ) { + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + switch (ip2config.addr[i]) { case 0: /* skip this slot even if card is present */ break; default: /* ISA */ /* ISA address must be specified */ - if ( (ip2config.addr[i] < 0x100) || (ip2config.addr[i] > 0x3f8) ) { - printk ( KERN_ERR "IP2: Bad ISA board %d address %x\n", - i, ip2config.addr[i] ); + if (ip2config.addr[i] < 0x100 || + ip2config.addr[i] > 0x3f8) { + printk(KERN_ERR "IP2: Bad ISA board %d " + "address %x\n", i, + ip2config.addr[i]); ip2config.addr[i] = 0; - } else { - ip2config.type[i] = ISA; - - /* Check for valid irq argument, set for polling if invalid */ - if (ip2config.irq[i] && !is_valid_irq(ip2config.irq[i])) { - printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n",ip2config.irq[i]); - ip2config.irq[i] = 0;// 0 is polling and is valid in that sense - } + break; + } + ip2config.type[i] = ISA; + + /* Check for valid irq argument, set for polling if + * invalid */ + if (ip2config.irq[i] && + !is_valid_irq(ip2config.irq[i])) { + printk(KERN_ERR "IP2: Bad IRQ(%d) specified\n", + ip2config.irq[i]); + /* 0 is polling and is valid in that sense */ + ip2config.irq[i] = 0; } break; case PCI: #ifdef CONFIG_PCI - { - int status; + { + u32 addr; + int status; - pci_dev_i = pci_get_device(PCI_VENDOR_ID_COMPUTONE, - PCI_DEVICE_ID_COMPUTONE_IP2EX, pci_dev_i); - if (pci_dev_i != NULL) { - unsigned int addr; - - if (pci_enable_device(pci_dev_i)) { - printk( KERN_ERR "IP2: can't enable PCI device at %s\n", - pci_name(pci_dev_i)); - break; - } - ip2config.type[i] = PCI; - ip2config.pci_dev[i] = pci_dev_get(pci_dev_i); - status = - pci_read_config_dword(pci_dev_i, PCI_BASE_ADDRESS_1, &addr); - if ( addr & 1 ) { - ip2config.addr[i]=(USHORT)(addr&0xfffe); - } else { - printk( KERN_ERR "IP2: PCI I/O address error\n"); - } + pdev = pci_get_device(PCI_VENDOR_ID_COMPUTONE, + PCI_DEVICE_ID_COMPUTONE_IP2EX, pdev); + if (pdev == NULL) { + ip2config.addr[i] = 0; + printk(KERN_ERR "IP2: PCI board %d not " + "found\n", i); + break; + } -// If the PCI BIOS assigned it, lets try and use it. If we -// can't acquire it or it screws up, deal with it then. - -// if (!is_valid_irq(pci_irq)) { -// printk( KERN_ERR "IP2: Bad PCI BIOS IRQ(%d)\n",pci_irq); -// pci_irq = 0; -// } - ip2config.irq[i] = pci_dev_i->irq; - } else { // ann error - ip2config.addr[i] = 0; - printk(KERN_ERR "IP2: PCI board %d not found\n", i); - } + if (pci_enable_device(pdev)) { + dev_err(&pdev->dev, "can't enable device\n"); + break; } + ip2config.type[i] = PCI; + ip2config.pci_dev[i] = pci_dev_get(pdev); + status = pci_read_config_dword(pdev, PCI_BASE_ADDRESS_1, + &addr); + if (addr & 1) + ip2config.addr[i] = (USHORT)(addr & 0xfffe); + else + dev_err(&pdev->dev, "I/O address error\n"); + + ip2config.irq[i] = pdev->irq; + } #else - printk( KERN_ERR "IP2: PCI card specified but PCI support not\n"); - printk( KERN_ERR "IP2: configured in this kernel.\n"); - printk( KERN_ERR "IP2: Recompile kernel with CONFIG_PCI defined!\n"); + printk(KERN_ERR "IP2: PCI card specified but PCI " + "support not enabled.\n"); + printk(KERN_ERR "IP2: Recompile kernel with CONFIG_PCI " + "defined!\n"); #endif /* CONFIG_PCI */ break; case EISA: - if ( (ip2config.addr[i] = find_eisa_board( Eisa_slot + 1 )) != 0) { + ip2config.addr[i] = find_eisa_board(Eisa_slot + 1); + if (ip2config.addr[i] != 0) { /* Eisa_irq set as side effect, boo */ ip2config.type[i] = EISA; } @@ -687,31 +661,32 @@ static int ip2_loadmain(void) break; } /* switch */ } /* for */ - if (pci_dev_i) - pci_dev_put(pci_dev_i); + pci_dev_put(pdev); - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { - if ( ip2config.addr[i] ) { + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (ip2config.addr[i]) { pB = kzalloc(sizeof(i2eBordStr), GFP_KERNEL); if (pB) { i2BoardPtrTable[i] = pB; - iiSetAddress( pB, ip2config.addr[i], ii2DelayTimer ); - iiReset( pB ); - } else { - printk(KERN_ERR "IP2: board memory allocation error\n"); - } + iiSetAddress(pB, ip2config.addr[i], + ii2DelayTimer); + iiReset(pB); + } else + printk(KERN_ERR "IP2: board memory allocation " + "error\n"); } } - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { - if ( ( pB = i2BoardPtrTable[i] ) != NULL ) { - iiResetDelay( pB ); + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + pB = i2BoardPtrTable[i]; + if (pB != NULL) { + iiResetDelay(pB); break; } } - for ( i = 0; i < IP2_MAX_BOARDS; ++i ) { + for (i = 0; i < IP2_MAX_BOARDS; ++i) { /* We don't want to request the firmware unless we have at least one board */ - if ( i2BoardPtrTable[i] != NULL ) { + if (i2BoardPtrTable[i] != NULL) { if (!fw) fw = ip2_request_firmware(); if (!fw) @@ -722,7 +697,7 @@ static int ip2_loadmain(void) if (fw) release_firmware(fw); - ip2trace (ITRC_NO_PORT, ITRC_INIT, 2, 0 ); + ip2trace(ITRC_NO_PORT, ITRC_INIT, 2, 0); ip2_tty_driver->owner = THIS_MODULE; ip2_tty_driver->name = "ttyF"; @@ -733,20 +708,23 @@ static int ip2_loadmain(void) ip2_tty_driver->subtype = SERIAL_TYPE_NORMAL; ip2_tty_driver->init_termios = tty_std_termios; ip2_tty_driver->init_termios.c_cflag = B9600|CS8|CREAD|HUPCL|CLOCAL; - ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV; + ip2_tty_driver->flags = TTY_DRIVER_REAL_RAW | + TTY_DRIVER_DYNAMIC_DEV; tty_set_operations(ip2_tty_driver, &ip2_ops); - ip2trace (ITRC_NO_PORT, ITRC_INIT, 3, 0 ); + ip2trace(ITRC_NO_PORT, ITRC_INIT, 3, 0); - /* Register the tty devices. */ - if ( ( err = tty_register_driver ( ip2_tty_driver ) ) ) { - printk(KERN_ERR "IP2: failed to register tty driver (%d)\n", err); + err = tty_register_driver(ip2_tty_driver); + if (err) { + printk(KERN_ERR "IP2: failed to register tty driver\n"); put_tty_driver(ip2_tty_driver); - return -EINVAL; - } else - /* Register the IPL driver. */ - if ( ( err = register_chrdev ( IP2_IPL_MAJOR, pcIpl, &ip2_ipl ) ) ) { - printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", err ); + return err; /* leaking resources */ + } + + err = register_chrdev(IP2_IPL_MAJOR, pcIpl, &ip2_ipl); + if (err) { + printk(KERN_ERR "IP2: failed to register IPL device (%d)\n", + err); } else { /* create the sysfs class */ ip2_class = class_create(THIS_MODULE, "ip2"); @@ -758,82 +736,85 @@ static int ip2_loadmain(void) /* Register the read_procmem thing */ if (!proc_create("ip2mem",0,NULL,&ip2mem_proc_fops)) { printk(KERN_ERR "IP2: failed to register read_procmem\n"); - } else { + return -EIO; /* leaking resources */ + } - ip2trace (ITRC_NO_PORT, ITRC_INIT, 4, 0 ); - /* Register the interrupt handler or poll handler, depending upon the - * specified interrupt. - */ + ip2trace(ITRC_NO_PORT, ITRC_INIT, 4, 0); + /* Register the interrupt handler or poll handler, depending upon the + * specified interrupt. + */ - for( i = 0; i < IP2_MAX_BOARDS; ++i ) { - if ( 0 == ip2config.addr[i] ) { - continue; - } + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (ip2config.addr[i] == 0) + continue; - if ( NULL != ( pB = i2BoardPtrTable[i] ) ) { - device_create_drvdata(ip2_class, NULL, - MKDEV(IP2_IPL_MAJOR, 4 * i), - NULL, "ipl%d", i); - device_create_drvdata(ip2_class, NULL, - MKDEV(IP2_IPL_MAJOR, 4 * i + 1), - NULL, "stat%d", i); - - for ( box = 0; box < ABS_MAX_BOXES; ++box ) - { - for ( j = 0; j < ABS_BIGGEST_BOX; ++j ) - { - if ( pB->i2eChannelMap[box] & (1 << j) ) - { - tty_register_device(ip2_tty_driver, - j + ABS_BIGGEST_BOX * - (box+i*ABS_MAX_BOXES), NULL); - } - } - } - } + pB = i2BoardPtrTable[i]; + if (pB != NULL) { + device_create_drvdata(ip2_class, NULL, + MKDEV(IP2_IPL_MAJOR, 4 * i), + NULL, "ipl%d", i); + device_create_drvdata(ip2_class, NULL, + MKDEV(IP2_IPL_MAJOR, 4 * i + 1), + NULL, "stat%d", i); + + for (box = 0; box < ABS_MAX_BOXES; box++) + for (j = 0; j < ABS_BIGGEST_BOX; j++) + if (pB->i2eChannelMap[box] & (1 << j)) + tty_register_device( + ip2_tty_driver, + j + ABS_BIGGEST_BOX * + (box+i*ABS_MAX_BOXES), + NULL); + } - if (poll_only) { -// Poll only forces driver to only use polling and -// to ignore the probed PCI or EISA interrupts. - ip2config.irq[i] = CIR_POLL; - } - if ( ip2config.irq[i] == CIR_POLL ) { + if (poll_only) { + /* Poll only forces driver to only use polling and + to ignore the probed PCI or EISA interrupts. */ + ip2config.irq[i] = CIR_POLL; + } + if (ip2config.irq[i] == CIR_POLL) { retry: - if (!TimerOn) { - PollTimer.expires = POLL_TIMEOUT; - add_timer ( &PollTimer ); - TimerOn = 1; - printk( KERN_INFO "IP2: polling\n"); - } - } else { - if (have_requested_irq(ip2config.irq[i])) - continue; - rc = request_irq( ip2config.irq[i], ip2_interrupt, - IP2_SA_FLAGS | (ip2config.type[i] == PCI ? IRQF_SHARED : 0), - pcName, i2BoardPtrTable[i]); - if (rc) { - printk(KERN_ERR "IP2: an request_irq failed: error %d\n",rc); - ip2config.irq[i] = CIR_POLL; - printk( KERN_INFO "IP2: Polling %ld/sec.\n", - (POLL_TIMEOUT - jiffies)); - goto retry; - } - mark_requested_irq(ip2config.irq[i]); - /* Initialise the interrupt handler bottom half (aka slih). */ + if (!TimerOn) { + PollTimer.expires = POLL_TIMEOUT; + add_timer(&PollTimer); + TimerOn = 1; + printk(KERN_INFO "IP2: polling\n"); } - } - for( i = 0; i < IP2_MAX_BOARDS; ++i ) { - if ( i2BoardPtrTable[i] ) { - set_irq( i, ip2config.irq[i] ); /* set and enable board interrupt */ + } else { + if (have_requested_irq(ip2config.irq[i])) + continue; + rc = request_irq(ip2config.irq[i], ip2_interrupt, + IP2_SA_FLAGS | + (ip2config.type[i] == PCI ? IRQF_SHARED : 0), + pcName, i2BoardPtrTable[i]); + if (rc) { + printk(KERN_ERR "IP2: request_irq failed: " + "error %d\n", rc); + ip2config.irq[i] = CIR_POLL; + printk(KERN_INFO "IP2: Polling %ld/sec.\n", + (POLL_TIMEOUT - jiffies)); + goto retry; } + mark_requested_irq(ip2config.irq[i]); + /* Initialise the interrupt handler bottom half + * (aka slih). */ } } - ip2trace (ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0 ); - goto out; + + for (i = 0; i < IP2_MAX_BOARDS; ++i) { + if (i2BoardPtrTable[i]) { + /* set and enable board interrupt */ + set_irq(i, ip2config.irq[i]); + } + } + + ip2trace(ITRC_NO_PORT, ITRC_INIT, ITRC_RETURN, 0); + + return 0; out_chrdev: unregister_chrdev(IP2_IPL_MAJOR, "ip2"); -out: + /* unregister and put tty here */ return err; } module_init(ip2_loadmain); |