| /* Derived from Applicom driver ac.c for SCO Unix */ |
| /* Ported by David Woodhouse, Axiom (Cambridge) Ltd. */ |
| /* dwmw2@infradead.org 30/8/98 */ |
| /* $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $ */ |
| /* This module is for Linux 2.1 and 2.2 series kernels. */ |
| /*****************************************************************************/ |
| /* J PAGET 18/02/94 passage V2.4.2 ioctl avec code 2 reset to les interrupt */ |
| /* ceci pour reseter correctement apres une sortie sauvage */ |
| /* J PAGET 02/05/94 passage V2.4.3 dans le traitement de d'interruption, */ |
| /* LoopCount n'etait pas initialise a 0. */ |
| /* F LAFORSE 04/07/95 version V2.6.0 lecture bidon apres acces a une carte */ |
| /* pour liberer le bus */ |
| /* J.PAGET 19/11/95 version V2.6.1 Nombre, addresse,irq n'est plus configure */ |
| /* et passe en argument a acinit, mais est scrute sur le bus pour s'adapter */ |
| /* au nombre de cartes presentes sur le bus. IOCL code 6 affichait V2.4.3 */ |
| /* F.LAFORSE 28/11/95 creation de fichiers acXX.o avec les differentes */ |
| /* adresses de base des cartes, IOCTL 6 plus complet */ |
| /* J.PAGET le 19/08/96 copie de la version V2.6 en V2.8.0 sans modification */ |
| /* de code autre que le texte V2.6.1 en V2.8.0 */ |
| /*****************************************************************************/ |
| |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/interrupt.h> |
| #include <linux/slab.h> |
| #include <linux/errno.h> |
| #include <linux/miscdevice.h> |
| #include <linux/pci.h> |
| #include <linux/wait.h> |
| #include <linux/init.h> |
| #include <linux/fs.h> |
| |
| #include <asm/io.h> |
| #include <asm/uaccess.h> |
| |
| #include "applicom.h" |
| |
| |
| /* NOTE: We use for loops with {write,read}b() instead of |
| memcpy_{from,to}io throughout this driver. This is because |
| the board doesn't correctly handle word accesses - only |
| bytes. |
| */ |
| |
| |
| #undef DEBUG |
| |
| #define MAX_BOARD 8 /* maximum of pc board possible */ |
| #define MAX_ISA_BOARD 4 |
| #define LEN_RAM_IO 0x800 |
| #define AC_MINOR 157 |
| |
| #ifndef PCI_VENDOR_ID_APPLICOM |
| #define PCI_VENDOR_ID_APPLICOM 0x1389 |
| #define PCI_DEVICE_ID_APPLICOM_PCIGENERIC 0x0001 |
| #define PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN 0x0002 |
| #define PCI_DEVICE_ID_APPLICOM_PCI2000PFB 0x0003 |
| #endif |
| #define MAX_PCI_DEVICE_NUM 3 |
| |
| static char *applicom_pci_devnames[] = { |
| "PCI board", |
| "PCI2000IBS / PCI2000CAN", |
| "PCI2000PFB" |
| }; |
| |
| static struct pci_device_id applicom_pci_tbl[] = { |
| { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCIGENERIC, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000IBS_CAN, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| { PCI_VENDOR_ID_APPLICOM, PCI_DEVICE_ID_APPLICOM_PCI2000PFB, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, |
| { 0 } |
| }; |
| MODULE_DEVICE_TABLE(pci, applicom_pci_tbl); |
| |
| MODULE_AUTHOR("David Woodhouse & Applicom International"); |
| MODULE_DESCRIPTION("Driver for Applicom Profibus card"); |
| MODULE_LICENSE("GPL"); |
| |
| MODULE_SUPPORTED_DEVICE("ac"); |
| |
| |
| static struct applicom_board { |
| unsigned long PhysIO; |
| void __iomem *RamIO; |
| wait_queue_head_t FlagSleepSend; |
| long irq; |
| spinlock_t mutex; |
| } apbs[MAX_BOARD]; |
| |
| static unsigned int irq = 0; /* interrupt number IRQ */ |
| static unsigned long mem = 0; /* physical segment of board */ |
| |
| module_param(irq, uint, 0); |
| MODULE_PARM_DESC(irq, "IRQ of the Applicom board"); |
| module_param(mem, ulong, 0); |
| MODULE_PARM_DESC(mem, "Shared Memory Address of Applicom board"); |
| |
| static unsigned int numboards; /* number of installed boards */ |
| static volatile unsigned char Dummy; |
| static DECLARE_WAIT_QUEUE_HEAD(FlagSleepRec); |
| static unsigned int WriteErrorCount; /* number of write error */ |
| static unsigned int ReadErrorCount; /* number of read error */ |
| static unsigned int DeviceErrorCount; /* number of device error */ |
| |
| static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *); |
| static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *); |
| static int ac_ioctl(struct inode *, struct file *, unsigned int, |
| unsigned long); |
| static irqreturn_t ac_interrupt(int, void *); |
| |
| static const struct file_operations ac_fops = { |
| .owner = THIS_MODULE, |
| .llseek = no_llseek, |
| .read = ac_read, |
| .write = ac_write, |
| .ioctl = ac_ioctl, |
| }; |
| |
| static struct miscdevice ac_miscdev = { |
| AC_MINOR, |
| "ac", |
| &ac_fops |
| }; |
| |
| static int dummy; /* dev_id for request_irq() */ |
| |
| static int ac_register_board(unsigned long physloc, void __iomem *loc, |
| unsigned char boardno) |
| { |
| volatile unsigned char byte_reset_it; |
| |
| if((readb(loc + CONF_END_TEST) != 0x00) || |
| (readb(loc + CONF_END_TEST + 1) != 0x55) || |
| (readb(loc + CONF_END_TEST + 2) != 0xAA) || |
| (readb(loc + CONF_END_TEST + 3) != 0xFF)) |
| return 0; |
| |
| if (!boardno) |
| boardno = readb(loc + NUMCARD_OWNER_TO_PC); |
| |
| if (!boardno || boardno > MAX_BOARD) { |
| printk(KERN_WARNING "Board #%d (at 0x%lx) is out of range (1 <= x <= %d).\n", |
| boardno, physloc, MAX_BOARD); |
| return 0; |
| } |
| |
| if (apbs[boardno - 1].RamIO) { |
| printk(KERN_WARNING "Board #%d (at 0x%lx) conflicts with previous board #%d (at 0x%lx)\n", |
| boardno, physloc, boardno, apbs[boardno-1].PhysIO); |
| return 0; |
| } |
| |
| boardno--; |
| |
| apbs[boardno].PhysIO = physloc; |
| apbs[boardno].RamIO = loc; |
| init_waitqueue_head(&apbs[boardno].FlagSleepSend); |
| spin_lock_init(&apbs[boardno].mutex); |
| byte_reset_it = readb(loc + RAM_IT_TO_PC); |
| |
| numboards++; |
| return boardno + 1; |
| } |
| |
| static void __exit applicom_exit(void) |
| { |
| unsigned int i; |
| |
| misc_deregister(&ac_miscdev); |
| |
| for (i = 0; i < MAX_BOARD; i++) { |
| |
| if (!apbs[i].RamIO) |
| continue; |
| |
| if (apbs[i].irq) |
| free_irq(apbs[i].irq, &dummy); |
| |
| iounmap(apbs[i].RamIO); |
| } |
| } |
| |
| static int __init applicom_init(void) |
| { |
| int i, numisa = 0; |
| struct pci_dev *dev = NULL; |
| void __iomem *RamIO; |
| int boardno, ret; |
| |
| printk(KERN_INFO "Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $\n"); |
| |
| /* No mem and irq given - check for a PCI card */ |
| |
| while ( (dev = pci_get_class(PCI_CLASS_OTHERS << 16, dev))) { |
| |
| if (dev->vendor != PCI_VENDOR_ID_APPLICOM) |
| continue; |
| |
| if (dev->device > MAX_PCI_DEVICE_NUM || dev->device == 0) |
| continue; |
| |
| if (pci_enable_device(dev)) |
| return -EIO; |
| |
| RamIO = ioremap(pci_resource_start(dev, 0), LEN_RAM_IO); |
| |
| if (!RamIO) { |
| printk(KERN_INFO "ac.o: Failed to ioremap PCI memory " |
| "space at 0x%llx\n", |
| (unsigned long long)pci_resource_start(dev, 0)); |
| pci_disable_device(dev); |
| return -EIO; |
| } |
| |
| printk(KERN_INFO "Applicom %s found at mem 0x%llx, irq %d\n", |
| applicom_pci_devnames[dev->device-1], |
| (unsigned long long)pci_resource_start(dev, 0), |
| dev->irq); |
| |
| boardno = ac_register_board(pci_resource_start(dev, 0), |
| RamIO, 0); |
| if (!boardno) { |
| printk(KERN_INFO "ac.o: PCI Applicom device doesn't have correct signature.\n"); |
| iounmap(RamIO); |
| pci_disable_device(dev); |
| continue; |
| } |
| |
| if (request_irq(dev->irq, &ac_interrupt, IRQF_SHARED, "Applicom PCI", &dummy)) { |
| printk(KERN_INFO "Could not allocate IRQ %d for PCI Applicom device.\n", dev->irq); |
| iounmap(RamIO); |
| pci_disable_device(dev); |
| apbs[boardno - 1].RamIO = NULL; |
| continue; |
| } |
| |
| /* Enable interrupts. */ |
| |
| writeb(0x40, apbs[boardno - 1].RamIO + RAM_IT_FROM_PC); |
| |
| apbs[boardno - 1].irq = dev->irq; |
| } |
| |
| /* Finished with PCI cards. If none registered, |
| * and there was no mem/irq specified, exit */ |
| |
| if (!mem || !irq) { |
| if (numboards) |
| goto fin; |
| else { |
| printk(KERN_INFO "ac.o: No PCI boards found.\n"); |
| printk(KERN_INFO "ac.o: For an ISA board you must supply memory and irq parameters.\n"); |
| return -ENXIO; |
| } |
| } |
| |
| /* Now try the specified ISA cards */ |
| |
| for (i = 0; i < MAX_ISA_BOARD; i++) { |
| RamIO = ioremap(mem + (LEN_RAM_IO * i), LEN_RAM_IO); |
| |
| if (!RamIO) { |
| printk(KERN_INFO "ac.o: Failed to ioremap the ISA card's memory space (slot #%d)\n", i + 1); |
| continue; |
| } |
| |
| if (!(boardno = ac_register_board((unsigned long)mem+ (LEN_RAM_IO*i), |
| RamIO,i+1))) { |
| iounmap(RamIO); |
| continue; |
| } |
| |
| printk(KERN_NOTICE "Applicom ISA card found at mem 0x%lx, irq %d\n", mem + (LEN_RAM_IO*i), irq); |
| |
| if (!numisa) { |
| if (request_irq(irq, &ac_interrupt, IRQF_SHARED, "Applicom ISA", &dummy)) { |
| printk(KERN_WARNING "Could not allocate IRQ %d for ISA Applicom device.\n", irq); |
| iounmap(RamIO); |
| apbs[boardno - 1].RamIO = NULL; |
| } |
| else |
| apbs[boardno - 1].irq = irq; |
| } |
| else |
| apbs[boardno - 1].irq = 0; |
| |
| numisa++; |
| } |
| |
| if (!numisa) |
| printk(KERN_WARNING "ac.o: No valid ISA Applicom boards found " |
| "at mem 0x%lx\n", mem); |
| |
| fin: |
| init_waitqueue_head(&FlagSleepRec); |
| |
| WriteErrorCount = 0; |
| ReadErrorCount = 0; |
| DeviceErrorCount = 0; |
| |
| if (numboards) { |
| ret = misc_register(&ac_miscdev); |
| if (ret) { |
| printk(KERN_WARNING "ac.o: Unable to register misc device\n"); |
| goto out; |
| } |
| for (i = 0; i < MAX_BOARD; i++) { |
| int serial; |
| char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; |
| |
| if (!apbs[i].RamIO) |
| continue; |
| |
| for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) |
| boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); |
| |
| boardname[serial] = 0; |
| |
| |
| printk(KERN_INFO "Applicom board %d: %s, PROM V%d.%d", |
| i+1, boardname, |
| (int)(readb(apbs[i].RamIO + VERS) >> 4), |
| (int)(readb(apbs[i].RamIO + VERS) & 0xF)); |
| |
| serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + |
| (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + |
| (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); |
| |
| if (serial != 0) |
| printk(" S/N %d\n", serial); |
| else |
| printk("\n"); |
| } |
| return 0; |
| } |
| |
| else |
| return -ENXIO; |
| |
| out: |
| for (i = 0; i < MAX_BOARD; i++) { |
| if (!apbs[i].RamIO) |
| continue; |
| if (apbs[i].irq) |
| free_irq(apbs[i].irq, &dummy); |
| iounmap(apbs[i].RamIO); |
| } |
| pci_disable_device(dev); |
| return ret; |
| } |
| |
| module_init(applicom_init); |
| module_exit(applicom_exit); |
| |
| |
| static ssize_t ac_write(struct file *file, const char __user *buf, size_t count, loff_t * ppos) |
| { |
| unsigned int NumCard; /* Board number 1 -> 8 */ |
| unsigned int IndexCard; /* Index board number 0 -> 7 */ |
| unsigned char TicCard; /* Board TIC to send */ |
| unsigned long flags; /* Current priority */ |
| struct st_ram_io st_loc; |
| struct mailbox tmpmailbox; |
| #ifdef DEBUG |
| int c; |
| #endif |
| DECLARE_WAITQUEUE(wait, current); |
| |
| if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { |
| static int warncount = 5; |
| if (warncount) { |
| printk(KERN_INFO "Hmmm. write() of Applicom card, length %zd != expected %zd\n", |
| count, sizeof(struct st_ram_io) + sizeof(struct mailbox)); |
| warncount--; |
| } |
| return -EINVAL; |
| } |
| |
| if(copy_from_user(&st_loc, buf, sizeof(struct st_ram_io))) |
| return -EFAULT; |
| |
| if(copy_from_user(&tmpmailbox, &buf[sizeof(struct st_ram_io)], |
| sizeof(struct mailbox))) |
| return -EFAULT; |
| |
| NumCard = st_loc.num_card; /* board number to send */ |
| TicCard = st_loc.tic_des_from_pc; /* tic number to send */ |
| IndexCard = NumCard - 1; |
| |
| if((NumCard < 1) || (NumCard > MAX_BOARD) || !apbs[IndexCard].RamIO) |
| return -EINVAL; |
| |
| #ifdef DEBUG |
| printk("Write to applicom card #%d. struct st_ram_io follows:", |
| IndexCard+1); |
| |
| for (c = 0; c < sizeof(struct st_ram_io);) { |
| |
| printk("\n%5.5X: %2.2X", c, ((unsigned char *) &st_loc)[c]); |
| |
| for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { |
| printk(" %2.2X", ((unsigned char *) &st_loc)[c]); |
| } |
| } |
| |
| printk("\nstruct mailbox follows:"); |
| |
| for (c = 0; c < sizeof(struct mailbox);) { |
| printk("\n%5.5X: %2.2X", c, ((unsigned char *) &tmpmailbox)[c]); |
| |
| for (c++; c % 8 && c < sizeof(struct mailbox); c++) { |
| printk(" %2.2X", ((unsigned char *) &tmpmailbox)[c]); |
| } |
| } |
| |
| printk("\n"); |
| #endif |
| |
| spin_lock_irqsave(&apbs[IndexCard].mutex, flags); |
| |
| /* Test octet ready correct */ |
| if(readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) > 2) { |
| Dummy = readb(apbs[IndexCard].RamIO + VERS); |
| spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); |
| printk(KERN_WARNING "APPLICOM driver write error board %d, DataFromPcReady = %d\n", |
| IndexCard,(int)readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY)); |
| DeviceErrorCount++; |
| return -EIO; |
| } |
| |
| /* Place ourselves on the wait queue */ |
| set_current_state(TASK_INTERRUPTIBLE); |
| add_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); |
| |
| /* Check whether the card is ready for us */ |
| while (readb(apbs[IndexCard].RamIO + DATA_FROM_PC_READY) != 0) { |
| Dummy = readb(apbs[IndexCard].RamIO + VERS); |
| /* It's busy. Sleep. */ |
| |
| spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); |
| schedule(); |
| if (signal_pending(current)) { |
| remove_wait_queue(&apbs[IndexCard].FlagSleepSend, |
| &wait); |
| return -EINTR; |
| } |
| spin_lock_irqsave(&apbs[IndexCard].mutex, flags); |
| set_current_state(TASK_INTERRUPTIBLE); |
| } |
| |
| /* We may not have actually slept */ |
| set_current_state(TASK_RUNNING); |
| remove_wait_queue(&apbs[IndexCard].FlagSleepSend, &wait); |
| |
| writeb(1, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); |
| |
| /* Which is best - lock down the pages with rawio and then |
| copy directly, or use bounce buffers? For now we do the latter |
| because it works with 2.2 still */ |
| { |
| unsigned char *from = (unsigned char *) &tmpmailbox; |
| void __iomem *to = apbs[IndexCard].RamIO + RAM_FROM_PC; |
| int c; |
| |
| for (c = 0; c < sizeof(struct mailbox); c++) |
| writeb(*(from++), to++); |
| } |
| |
| writeb(0x20, apbs[IndexCard].RamIO + TIC_OWNER_FROM_PC); |
| writeb(0xff, apbs[IndexCard].RamIO + NUMCARD_OWNER_FROM_PC); |
| writeb(TicCard, apbs[IndexCard].RamIO + TIC_DES_FROM_PC); |
| writeb(NumCard, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); |
| writeb(2, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); |
| writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); |
| Dummy = readb(apbs[IndexCard].RamIO + VERS); |
| spin_unlock_irqrestore(&apbs[IndexCard].mutex, flags); |
| return 0; |
| } |
| |
| static int do_ac_read(int IndexCard, char __user *buf, |
| struct st_ram_io *st_loc, struct mailbox *mailbox) |
| { |
| void __iomem *from = apbs[IndexCard].RamIO + RAM_TO_PC; |
| unsigned char *to = (unsigned char *)&mailbox; |
| #ifdef DEBUG |
| int c; |
| #endif |
| |
| st_loc->tic_owner_to_pc = readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC); |
| st_loc->numcard_owner_to_pc = readb(apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); |
| |
| |
| { |
| int c; |
| |
| for (c = 0; c < sizeof(struct mailbox); c++) |
| *(to++) = readb(from++); |
| } |
| writeb(1, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); |
| writeb(1, apbs[IndexCard].RamIO + TYP_ACK_FROM_PC); |
| writeb(IndexCard+1, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); |
| writeb(readb(apbs[IndexCard].RamIO + TIC_OWNER_TO_PC), |
| apbs[IndexCard].RamIO + TIC_ACK_FROM_PC); |
| writeb(2, apbs[IndexCard].RamIO + ACK_FROM_PC_READY); |
| writeb(0, apbs[IndexCard].RamIO + DATA_TO_PC_READY); |
| writeb(2, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); |
| Dummy = readb(apbs[IndexCard].RamIO + VERS); |
| |
| #ifdef DEBUG |
| printk("Read from applicom card #%d. struct st_ram_io follows:", NumCard); |
| |
| for (c = 0; c < sizeof(struct st_ram_io);) { |
| printk("\n%5.5X: %2.2X", c, ((unsigned char *)st_loc)[c]); |
| |
| for (c++; c % 8 && c < sizeof(struct st_ram_io); c++) { |
| printk(" %2.2X", ((unsigned char *)st_loc)[c]); |
| } |
| } |
| |
| printk("\nstruct mailbox follows:"); |
| |
| for (c = 0; c < sizeof(struct mailbox);) { |
| printk("\n%5.5X: %2.2X", c, ((unsigned char *)mailbox)[c]); |
| |
| for (c++; c % 8 && c < sizeof(struct mailbox); c++) { |
| printk(" %2.2X", ((unsigned char *)mailbox)[c]); |
| } |
| } |
| printk("\n"); |
| #endif |
| return (sizeof(struct st_ram_io) + sizeof(struct mailbox)); |
| } |
| |
| static ssize_t ac_read (struct file *filp, char __user *buf, size_t count, loff_t *ptr) |
| { |
| unsigned long flags; |
| unsigned int i; |
| unsigned char tmp; |
| int ret = 0; |
| DECLARE_WAITQUEUE(wait, current); |
| #ifdef DEBUG |
| int loopcount=0; |
| #endif |
| /* No need to ratelimit this. Only root can trigger it anyway */ |
| if (count != sizeof(struct st_ram_io) + sizeof(struct mailbox)) { |
| printk( KERN_WARNING "Hmmm. read() of Applicom card, length %zd != expected %zd\n", |
| count,sizeof(struct st_ram_io) + sizeof(struct mailbox)); |
| return -EINVAL; |
| } |
| |
| while(1) { |
| /* Stick ourself on the wait queue */ |
| set_current_state(TASK_INTERRUPTIBLE); |
| add_wait_queue(&FlagSleepRec, &wait); |
| |
| /* Scan each board, looking for one which has a packet for us */ |
| for (i=0; i < MAX_BOARD; i++) { |
| if (!apbs[i].RamIO) |
| continue; |
| spin_lock_irqsave(&apbs[i].mutex, flags); |
| |
| tmp = readb(apbs[i].RamIO + DATA_TO_PC_READY); |
| |
| if (tmp == 2) { |
| struct st_ram_io st_loc; |
| struct mailbox mailbox; |
| |
| /* Got a packet for us */ |
| ret = do_ac_read(i, buf, &st_loc, &mailbox); |
| spin_unlock_irqrestore(&apbs[i].mutex, flags); |
| set_current_state(TASK_RUNNING); |
| remove_wait_queue(&FlagSleepRec, &wait); |
| |
| if (copy_to_user(buf, &st_loc, sizeof(st_loc))) |
| return -EFAULT; |
| if (copy_to_user(buf + sizeof(st_loc), &mailbox, sizeof(mailbox))) |
| return -EFAULT; |
| return tmp; |
| } |
| |
| if (tmp > 2) { |
| /* Got an error */ |
| Dummy = readb(apbs[i].RamIO + VERS); |
| |
| spin_unlock_irqrestore(&apbs[i].mutex, flags); |
| set_current_state(TASK_RUNNING); |
| remove_wait_queue(&FlagSleepRec, &wait); |
| |
| printk(KERN_WARNING "APPLICOM driver read error board %d, DataToPcReady = %d\n", |
| i,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); |
| DeviceErrorCount++; |
| return -EIO; |
| } |
| |
| /* Nothing for us. Try the next board */ |
| Dummy = readb(apbs[i].RamIO + VERS); |
| spin_unlock_irqrestore(&apbs[i].mutex, flags); |
| |
| } /* per board */ |
| |
| /* OK - No boards had data for us. Sleep now */ |
| |
| schedule(); |
| remove_wait_queue(&FlagSleepRec, &wait); |
| |
| if (signal_pending(current)) |
| return -EINTR; |
| |
| #ifdef DEBUG |
| if (loopcount++ > 2) { |
| printk(KERN_DEBUG "Looping in ac_read. loopcount %d\n", loopcount); |
| } |
| #endif |
| } |
| } |
| |
| static irqreturn_t ac_interrupt(int vec, void *dev_instance) |
| { |
| unsigned int i; |
| unsigned int FlagInt; |
| unsigned int LoopCount; |
| int handled = 0; |
| |
| // printk("Applicom interrupt on IRQ %d occurred\n", vec); |
| |
| LoopCount = 0; |
| |
| do { |
| FlagInt = 0; |
| for (i = 0; i < MAX_BOARD; i++) { |
| |
| /* Skip if this board doesn't exist */ |
| if (!apbs[i].RamIO) |
| continue; |
| |
| spin_lock(&apbs[i].mutex); |
| |
| /* Skip if this board doesn't want attention */ |
| if(readb(apbs[i].RamIO + RAM_IT_TO_PC) == 0) { |
| spin_unlock(&apbs[i].mutex); |
| continue; |
| } |
| |
| handled = 1; |
| FlagInt = 1; |
| writeb(0, apbs[i].RamIO + RAM_IT_TO_PC); |
| |
| if (readb(apbs[i].RamIO + DATA_TO_PC_READY) > 2) { |
| printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataToPcReady = %d\n", |
| i+1,(int)readb(apbs[i].RamIO + DATA_TO_PC_READY)); |
| DeviceErrorCount++; |
| } |
| |
| if((readb(apbs[i].RamIO + DATA_FROM_PC_READY) > 2) && |
| (readb(apbs[i].RamIO + DATA_FROM_PC_READY) != 6)) { |
| |
| printk(KERN_WARNING "APPLICOM driver interrupt err board %d, DataFromPcReady = %d\n", |
| i+1,(int)readb(apbs[i].RamIO + DATA_FROM_PC_READY)); |
| DeviceErrorCount++; |
| } |
| |
| if (readb(apbs[i].RamIO + DATA_TO_PC_READY) == 2) { /* mailbox sent by the card ? */ |
| if (waitqueue_active(&FlagSleepRec)) { |
| wake_up_interruptible(&FlagSleepRec); |
| } |
| } |
| |
| if (readb(apbs[i].RamIO + DATA_FROM_PC_READY) == 0) { /* ram i/o free for write by pc ? */ |
| if (waitqueue_active(&apbs[i].FlagSleepSend)) { /* process sleep during read ? */ |
| wake_up_interruptible(&apbs[i].FlagSleepSend); |
| } |
| } |
| Dummy = readb(apbs[i].RamIO + VERS); |
| |
| if(readb(apbs[i].RamIO + RAM_IT_TO_PC)) { |
| /* There's another int waiting on this card */ |
| spin_unlock(&apbs[i].mutex); |
| i--; |
| } else { |
| spin_unlock(&apbs[i].mutex); |
| } |
| } |
| if (FlagInt) |
| LoopCount = 0; |
| else |
| LoopCount++; |
| } while(LoopCount < 2); |
| return IRQ_RETVAL(handled); |
| } |
| |
| |
| |
| static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) |
| |
| { /* @ ADG ou ATO selon le cas */ |
| int i; |
| unsigned char IndexCard; |
| void __iomem *pmem; |
| int ret = 0; |
| volatile unsigned char byte_reset_it; |
| struct st_ram_io *adgl; |
| void __user *argp = (void __user *)arg; |
| |
| /* In general, the device is only openable by root anyway, so we're not |
| particularly concerned that bogus ioctls can flood the console. */ |
| |
| adgl = kmalloc(sizeof(struct st_ram_io), GFP_KERNEL); |
| if (!adgl) |
| return -ENOMEM; |
| |
| if (copy_from_user(adgl, argp, sizeof(struct st_ram_io))) { |
| kfree(adgl); |
| return -EFAULT; |
| } |
| |
| IndexCard = adgl->num_card-1; |
| |
| if(cmd != 0 && cmd != 6 && |
| ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) { |
| static int warncount = 10; |
| if (warncount) { |
| printk( KERN_WARNING "APPLICOM driver IOCTL, bad board number %d\n",(int)IndexCard+1); |
| warncount--; |
| } |
| kfree(adgl); |
| return -EINVAL; |
| } |
| |
| switch (cmd) { |
| |
| case 0: |
| pmem = apbs[IndexCard].RamIO; |
| for (i = 0; i < sizeof(struct st_ram_io); i++) |
| ((unsigned char *)adgl)[i]=readb(pmem++); |
| if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) |
| ret = -EFAULT; |
| break; |
| case 1: |
| pmem = apbs[IndexCard].RamIO + CONF_END_TEST; |
| for (i = 0; i < 4; i++) |
| adgl->conf_end_test[i] = readb(pmem++); |
| for (i = 0; i < 2; i++) |
| adgl->error_code[i] = readb(pmem++); |
| for (i = 0; i < 4; i++) |
| adgl->parameter_error[i] = readb(pmem++); |
| pmem = apbs[IndexCard].RamIO + VERS; |
| adgl->vers = readb(pmem); |
| pmem = apbs[IndexCard].RamIO + TYPE_CARD; |
| for (i = 0; i < 20; i++) |
| adgl->reserv1[i] = readb(pmem++); |
| *(int *)&adgl->reserv1[20] = |
| (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER) << 16) + |
| (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 1) << 8) + |
| (readb(apbs[IndexCard].RamIO + SERIAL_NUMBER + 2) ); |
| |
| if (copy_to_user(argp, adgl, sizeof(struct st_ram_io))) |
| ret = -EFAULT; |
| break; |
| case 2: |
| pmem = apbs[IndexCard].RamIO + CONF_END_TEST; |
| for (i = 0; i < 10; i++) |
| writeb(0xff, pmem++); |
| writeb(adgl->data_from_pc_ready, |
| apbs[IndexCard].RamIO + DATA_FROM_PC_READY); |
| |
| writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); |
| |
| for (i = 0; i < MAX_BOARD; i++) { |
| if (apbs[i].RamIO) { |
| byte_reset_it = readb(apbs[i].RamIO + RAM_IT_TO_PC); |
| } |
| } |
| break; |
| case 3: |
| pmem = apbs[IndexCard].RamIO + TIC_DES_FROM_PC; |
| writeb(adgl->tic_des_from_pc, pmem); |
| break; |
| case 4: |
| pmem = apbs[IndexCard].RamIO + TIC_OWNER_TO_PC; |
| adgl->tic_owner_to_pc = readb(pmem++); |
| adgl->numcard_owner_to_pc = readb(pmem); |
| if (copy_to_user(argp, adgl,sizeof(struct st_ram_io))) |
| ret = -EFAULT; |
| break; |
| case 5: |
| writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_OWNER_TO_PC); |
| writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_DES_FROM_PC); |
| writeb(adgl->num_card, apbs[IndexCard].RamIO + NUMCARD_ACK_FROM_PC); |
| writeb(4, apbs[IndexCard].RamIO + DATA_FROM_PC_READY); |
| writeb(1, apbs[IndexCard].RamIO + RAM_IT_FROM_PC); |
| break; |
| case 6: |
| printk(KERN_INFO "APPLICOM driver release .... V2.8.0 ($Revision: 1.30 $)\n"); |
| printk(KERN_INFO "Number of installed boards . %d\n", (int) numboards); |
| printk(KERN_INFO "Segment of board ........... %X\n", (int) mem); |
| printk(KERN_INFO "Interrupt IRQ number ....... %d\n", (int) irq); |
| for (i = 0; i < MAX_BOARD; i++) { |
| int serial; |
| char boardname[(SERIAL_NUMBER - TYPE_CARD) + 1]; |
| |
| if (!apbs[i].RamIO) |
| continue; |
| |
| for (serial = 0; serial < SERIAL_NUMBER - TYPE_CARD; serial++) |
| boardname[serial] = readb(apbs[i].RamIO + TYPE_CARD + serial); |
| boardname[serial] = 0; |
| |
| printk(KERN_INFO "Prom version board %d ....... V%d.%d %s", |
| i+1, |
| (int)(readb(apbs[IndexCard].RamIO + VERS) >> 4), |
| (int)(readb(apbs[IndexCard].RamIO + VERS) & 0xF), |
| boardname); |
| |
| |
| serial = (readb(apbs[i].RamIO + SERIAL_NUMBER) << 16) + |
| (readb(apbs[i].RamIO + SERIAL_NUMBER + 1) << 8) + |
| (readb(apbs[i].RamIO + SERIAL_NUMBER + 2) ); |
| |
| if (serial != 0) |
| printk(" S/N %d\n", serial); |
| else |
| printk("\n"); |
| } |
| if (DeviceErrorCount != 0) |
| printk(KERN_INFO "DeviceErrorCount ........... %d\n", DeviceErrorCount); |
| if (ReadErrorCount != 0) |
| printk(KERN_INFO "ReadErrorCount ............. %d\n", ReadErrorCount); |
| if (WriteErrorCount != 0) |
| printk(KERN_INFO "WriteErrorCount ............ %d\n", WriteErrorCount); |
| if (waitqueue_active(&FlagSleepRec)) |
| printk(KERN_INFO "Process in read pending\n"); |
| for (i = 0; i < MAX_BOARD; i++) { |
| if (apbs[i].RamIO && waitqueue_active(&apbs[i].FlagSleepSend)) |
| printk(KERN_INFO "Process in write pending board %d\n",i+1); |
| } |
| break; |
| default: |
| printk(KERN_INFO "APPLICOM driver ioctl, unknown function code %d\n",cmd) ; |
| ret = -EINVAL; |
| break; |
| } |
| Dummy = readb(apbs[IndexCard].RamIO + VERS); |
| kfree(adgl); |
| return 0; |
| } |
| |