diff options
Diffstat (limited to 'drivers/isdn/hardware/avm/t1isa.c')
| -rw-r--r-- | drivers/isdn/hardware/avm/t1isa.c | 596 |
1 files changed, 596 insertions, 0 deletions
diff --git a/drivers/isdn/hardware/avm/t1isa.c b/drivers/isdn/hardware/avm/t1isa.c new file mode 100644 index 000000000000..cb9d9cee2a64 --- /dev/null +++ b/drivers/isdn/hardware/avm/t1isa.c @@ -0,0 +1,596 @@ +/* $Id: t1isa.c,v 1.1.2.3 2004/02/10 01:07:12 keil Exp $ + * + * Module for AVM T1 HEMA-card. + * + * Copyright 1999 by Carsten Paeth <calle@calle.de> + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + * + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/skbuff.h> +#include <linux/delay.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/capi.h> +#include <linux/netdevice.h> +#include <linux/kernelcapi.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <asm/io.h> +#include <linux/isdn/capicmd.h> +#include <linux/isdn/capiutil.h> +#include <linux/isdn/capilli.h> +#include "avmcard.h" + +/* ------------------------------------------------------------- */ + +static char *revision = "$Revision: 1.1.2.3 $"; + +/* ------------------------------------------------------------- */ + +MODULE_DESCRIPTION("CAPI4Linux: Driver for AVM T1 HEMA ISA card"); +MODULE_AUTHOR("Carsten Paeth"); +MODULE_LICENSE("GPL"); + +/* ------------------------------------------------------------- */ + +static int hema_irq_table[16] = +{0, + 0, + 0, + 0x80, /* irq 3 */ + 0, + 0x90, /* irq 5 */ + 0, + 0xA0, /* irq 7 */ + 0, + 0xB0, /* irq 9 */ + 0xC0, /* irq 10 */ + 0xD0, /* irq 11 */ + 0xE0, /* irq 12 */ + 0, + 0, + 0xF0, /* irq 15 */ +}; + +static int t1_detectandinit(unsigned int base, unsigned irq, int cardnr) +{ + unsigned char cregs[8]; + unsigned char reverse_cardnr; + unsigned char dummy; + int i; + + reverse_cardnr = ((cardnr & 0x01) << 3) | ((cardnr & 0x02) << 1) + | ((cardnr & 0x04) >> 1) | ((cardnr & 0x08) >> 3); + cregs[0] = (HEMA_VERSION_ID << 4) | (reverse_cardnr & 0xf); + cregs[1] = 0x00; /* fast & slow link connected to CON1 */ + cregs[2] = 0x05; /* fast link 20MBit, slow link 20 MBit */ + cregs[3] = 0; + cregs[4] = 0x11; /* zero wait state */ + cregs[5] = hema_irq_table[irq & 0xf]; + cregs[6] = 0; + cregs[7] = 0; + + /* + * no one else should use the ISA bus in this moment, + * but no function there to prevent this :-( + * save_flags(flags); cli(); + */ + + /* board reset */ + t1outp(base, T1_RESETBOARD, 0xf); + mdelay(100); + dummy = t1inp(base, T1_FASTLINK+T1_OUTSTAT); /* first read */ + + /* write config */ + dummy = (base >> 4) & 0xff; + for (i=1;i<=0xf;i++) t1outp(base, i, dummy); + t1outp(base, HEMA_PAL_ID & 0xf, dummy); + t1outp(base, HEMA_PAL_ID >> 4, cregs[0]); + for(i=1;i<7;i++) t1outp(base, 0, cregs[i]); + t1outp(base, ((base >> 4)) & 0x3, cregs[7]); + /* restore_flags(flags); */ + + mdelay(100); + t1outp(base, T1_FASTLINK+T1_RESETLINK, 0); + t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0); + mdelay(10); + t1outp(base, T1_FASTLINK+T1_RESETLINK, 1); + t1outp(base, T1_SLOWLINK+T1_RESETLINK, 1); + mdelay(100); + t1outp(base, T1_FASTLINK+T1_RESETLINK, 0); + t1outp(base, T1_SLOWLINK+T1_RESETLINK, 0); + mdelay(10); + t1outp(base, T1_FASTLINK+T1_ANALYSE, 0); + mdelay(5); + t1outp(base, T1_SLOWLINK+T1_ANALYSE, 0); + + if (t1inp(base, T1_FASTLINK+T1_OUTSTAT) != 0x1) /* tx empty */ + return 1; + if (t1inp(base, T1_FASTLINK+T1_INSTAT) != 0x0) /* rx empty */ + return 2; + if (t1inp(base, T1_FASTLINK+T1_IRQENABLE) != 0x0) + return 3; + if ((t1inp(base, T1_FASTLINK+T1_FIFOSTAT) & 0xf0) != 0x70) + return 4; + if ((t1inp(base, T1_FASTLINK+T1_IRQMASTER) & 0x0e) != 0) + return 5; + if ((t1inp(base, T1_FASTLINK+T1_IDENT) & 0x7d) != 1) + return 6; + if (t1inp(base, T1_SLOWLINK+T1_OUTSTAT) != 0x1) /* tx empty */ + return 7; + if ((t1inp(base, T1_SLOWLINK+T1_IRQMASTER) & 0x0e) != 0) + return 8; + if ((t1inp(base, T1_SLOWLINK+T1_IDENT) & 0x7d) != 0) + return 9; + return 0; +} + +static irqreturn_t t1isa_interrupt(int interrupt, void *devptr, struct pt_regs *regs) +{ + avmcard *card = devptr; + avmctrl_info *cinfo = &card->ctrlinfo[0]; + struct capi_ctr *ctrl = &cinfo->capi_ctrl; + unsigned char b1cmd; + struct sk_buff *skb; + + unsigned ApplId; + unsigned MsgLen; + unsigned DataB3Len; + unsigned NCCI; + unsigned WindowSize; + unsigned long flags; + + spin_lock_irqsave(&card->lock, flags); + + while (b1_rx_full(card->port)) { + + b1cmd = b1_get_byte(card->port); + + switch (b1cmd) { + + case RECEIVE_DATA_B3_IND: + + ApplId = (unsigned) b1_get_word(card->port); + MsgLen = t1_get_slice(card->port, card->msgbuf); + DataB3Len = t1_get_slice(card->port, card->databuf); + spin_unlock_irqrestore(&card->lock, flags); + + if (MsgLen < 30) { /* not CAPI 64Bit */ + memset(card->msgbuf+MsgLen, 0, 30-MsgLen); + MsgLen = 30; + CAPIMSG_SETLEN(card->msgbuf, 30); + } + if (!(skb = alloc_skb(DataB3Len+MsgLen, GFP_ATOMIC))) { + printk(KERN_ERR "%s: incoming packet dropped\n", + card->name); + } else { + memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); + memcpy(skb_put(skb, DataB3Len), card->databuf, DataB3Len); + capi_ctr_handle_message(ctrl, ApplId, skb); + } + break; + + case RECEIVE_MESSAGE: + + ApplId = (unsigned) b1_get_word(card->port); + MsgLen = t1_get_slice(card->port, card->msgbuf); + spin_unlock_irqrestore(&card->lock, flags); + if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) { + printk(KERN_ERR "%s: incoming packet dropped\n", + card->name); + } else { + memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); + if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3) + capilib_data_b3_conf(&cinfo->ncci_head, ApplId, + CAPIMSG_NCCI(skb->data), + CAPIMSG_MSGID(skb->data)); + + capi_ctr_handle_message(ctrl, ApplId, skb); + } + break; + + case RECEIVE_NEW_NCCI: + + ApplId = b1_get_word(card->port); + NCCI = b1_get_word(card->port); + WindowSize = b1_get_word(card->port); + spin_unlock_irqrestore(&card->lock, flags); + + capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize); + + break; + + case RECEIVE_FREE_NCCI: + + ApplId = b1_get_word(card->port); + NCCI = b1_get_word(card->port); + spin_unlock_irqrestore(&card->lock, flags); + + if (NCCI != 0xffffffff) + capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI); + + break; + + case RECEIVE_START: + b1_put_byte(card->port, SEND_POLLACK); + spin_unlock_irqrestore(&card->lock, flags); + capi_ctr_resume_output(ctrl); + break; + + case RECEIVE_STOP: + spin_unlock_irqrestore(&card->lock, flags); + capi_ctr_suspend_output(ctrl); + break; + + case RECEIVE_INIT: + + cinfo->versionlen = t1_get_slice(card->port, cinfo->versionbuf); + spin_unlock_irqrestore(&card->lock, flags); + b1_parse_version(cinfo); + printk(KERN_INFO "%s: %s-card (%s) now active\n", + card->name, + cinfo->version[VER_CARDTYPE], + cinfo->version[VER_DRIVER]); + capi_ctr_ready(ctrl); + break; + + case RECEIVE_TASK_READY: + ApplId = (unsigned) b1_get_word(card->port); + MsgLen = t1_get_slice(card->port, card->msgbuf); + spin_unlock_irqrestore(&card->lock, flags); + card->msgbuf[MsgLen] = 0; + while ( MsgLen > 0 + && ( card->msgbuf[MsgLen-1] == '\n' + || card->msgbuf[MsgLen-1] == '\r')) { + card->msgbuf[MsgLen-1] = 0; + MsgLen--; + } + printk(KERN_INFO "%s: task %d \"%s\" ready.\n", + card->name, ApplId, card->msgbuf); + break; + + case RECEIVE_DEBUGMSG: + MsgLen = t1_get_slice(card->port, card->msgbuf); + spin_unlock_irqrestore(&card->lock, flags); + card->msgbuf[MsgLen] = 0; + while ( MsgLen > 0 + && ( card->msgbuf[MsgLen-1] == '\n' + || card->msgbuf[MsgLen-1] == '\r')) { + card->msgbuf[MsgLen-1] = 0; + MsgLen--; + } + printk(KERN_INFO "%s: DEBUG: %s\n", card->name, card->msgbuf); + break; + + + case 0xff: + spin_unlock_irqrestore(&card->lock, flags); + printk(KERN_ERR "%s: card reseted ?\n", card->name); + return IRQ_HANDLED; + default: + spin_unlock_irqrestore(&card->lock, flags); + printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n", + card->name, b1cmd); + return IRQ_NONE; + } + } + return IRQ_HANDLED; +} + +/* ------------------------------------------------------------- */ + +static int t1isa_load_firmware(struct capi_ctr *ctrl, capiloaddata *data) +{ + avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); + avmcard *card = cinfo->card; + unsigned int port = card->port; + unsigned long flags; + int retval; + + t1_disable_irq(port); + b1_reset(port); + + if ((retval = b1_load_t4file(card, &data->firmware))) { + b1_reset(port); + printk(KERN_ERR "%s: failed to load t4file!!\n", + card->name); + return retval; + } + + if (data->configuration.len > 0 && data->configuration.data) { + if ((retval = b1_load_config(card, &data->configuration))) { + b1_reset(port); + printk(KERN_ERR "%s: failed to load config!!\n", + card->name); + return retval; + } + } + + if (!b1_loaded(card)) { + printk(KERN_ERR "%s: failed to load t4file.\n", card->name); + return -EIO; + } + + spin_lock_irqsave(&card->lock, flags); + b1_setinterrupt(port, card->irq, card->cardtype); + b1_put_byte(port, SEND_INIT); + b1_put_word(port, CAPI_MAXAPPL); + b1_put_word(port, AVM_NCCI_PER_CHANNEL*30); + b1_put_word(port, ctrl->cnr - 1); + spin_unlock_irqrestore(&card->lock, flags); + + return 0; +} + +void t1isa_reset_ctr(struct capi_ctr *ctrl) +{ + avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); + avmcard *card = cinfo->card; + unsigned int port = card->port; + + t1_disable_irq(port); + b1_reset(port); + b1_reset(port); + + memset(cinfo->version, 0, sizeof(cinfo->version)); + capilib_release(&cinfo->ncci_head); + capi_ctr_reseted(ctrl); +} + +static void t1isa_remove(struct pci_dev *pdev) +{ + avmctrl_info *cinfo = pci_get_drvdata(pdev); + avmcard *card; + + if (!cinfo) + return; + + card = cinfo->card; + + t1_disable_irq(card->port); + b1_reset(card->port); + b1_reset(card->port); + t1_reset(card->port); + + detach_capi_ctr(&cinfo->capi_ctrl); + free_irq(card->irq, card); + release_region(card->port, AVMB1_PORTLEN); + b1_free_card(card); +} + +/* ------------------------------------------------------------- */ + +static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb); +static char *t1isa_procinfo(struct capi_ctr *ctrl); + +static int t1isa_probe(struct pci_dev *pdev, int cardnr) +{ + avmctrl_info *cinfo; + avmcard *card; + int retval; + + card = b1_alloc_card(1); + if (!card) { + printk(KERN_WARNING "t1isa: no memory.\n"); + retval = -ENOMEM; + goto err; + } + + cinfo = card->ctrlinfo; + card->port = pci_resource_start(pdev, 0); + card->irq = pdev->irq; + card->cardtype = avm_t1isa; + card->cardnr = cardnr; + sprintf(card->name, "t1isa-%x", card->port); + + if (!(((card->port & 0x7) == 0) && ((card->port & 0x30) != 0x30))) { + printk(KERN_WARNING "t1isa: invalid port 0x%x.\n", card->port); + retval = -EINVAL; + goto err_free; + } + if (hema_irq_table[card->irq & 0xf] == 0) { + printk(KERN_WARNING "t1isa: irq %d not valid.\n", card->irq); + retval = -EINVAL; + goto err_free; + } + if (!request_region(card->port, AVMB1_PORTLEN, card->name)) { + printk(KERN_INFO "t1isa: ports 0x%03x-0x%03x in use.\n", + card->port, card->port + AVMB1_PORTLEN); + retval = -EBUSY; + goto err_free; + } + retval = request_irq(card->irq, t1isa_interrupt, 0, card->name, card); + if (retval) { + printk(KERN_INFO "t1isa: unable to get IRQ %d.\n", card->irq); + retval = -EBUSY; + goto err_release_region; + } + + if ((retval = t1_detectandinit(card->port, card->irq, card->cardnr)) != 0) { + printk(KERN_INFO "t1isa: NO card at 0x%x (%d)\n", + card->port, retval); + retval = -ENODEV; + goto err_free_irq; + } + t1_disable_irq(card->port); + b1_reset(card->port); + + cinfo->capi_ctrl.owner = THIS_MODULE; + cinfo->capi_ctrl.driver_name = "t1isa"; + cinfo->capi_ctrl.driverdata = cinfo; + cinfo->capi_ctrl.register_appl = b1_register_appl; + cinfo->capi_ctrl.release_appl = b1_release_appl; + cinfo->capi_ctrl.send_message = t1isa_send_message; + cinfo->capi_ctrl.load_firmware = t1isa_load_firmware; + cinfo->capi_ctrl.reset_ctr = t1isa_reset_ctr; + cinfo->capi_ctrl.procinfo = t1isa_procinfo; + cinfo->capi_ctrl.ctr_read_proc = b1ctl_read_proc; + strcpy(cinfo->capi_ctrl.name, card->name); + + retval = attach_capi_ctr(&cinfo->capi_ctrl); + if (retval) { + printk(KERN_INFO "t1isa: attach controller failed.\n"); + goto err_free_irq; + } + + printk(KERN_INFO "t1isa: AVM T1 ISA at i/o %#x, irq %d, card %d\n", + card->port, card->irq, card->cardnr); + + pci_set_drvdata(pdev, cinfo); + return 0; + + err_free_irq: + free_irq(card->irq, card); + err_release_region: + release_region(card->port, AVMB1_PORTLEN); + err_free: + b1_free_card(card); + err: + return retval; +} + +static u16 t1isa_send_message(struct capi_ctr *ctrl, struct sk_buff *skb) +{ + avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); + avmcard *card = cinfo->card; + unsigned int port = card->port; + unsigned long flags; + u16 len = CAPIMSG_LEN(skb->data); + u8 cmd = CAPIMSG_COMMAND(skb->data); + u8 subcmd = CAPIMSG_SUBCOMMAND(skb->data); + u16 dlen, retval; + + if (CAPICMD(cmd, subcmd) == CAPI_DATA_B3_REQ) { + retval = capilib_data_b3_req(&cinfo->ncci_head, + CAPIMSG_APPID(skb->data), + CAPIMSG_NCCI(skb->data), + CAPIMSG_MSGID(skb->data)); + if (retval != CAPI_NOERROR) + return retval; + + dlen = CAPIMSG_DATALEN(skb->data); + + spin_lock_irqsave(&card->lock, flags); + b1_put_byte(port, SEND_DATA_B3_REQ); + t1_put_slice(port, skb->data, len); + t1_put_slice(port, skb->data + len, dlen); + spin_unlock_irqrestore(&card->lock, flags); + } else { + + spin_lock_irqsave(&card->lock, flags); + b1_put_byte(port, SEND_MESSAGE); + t1_put_slice(port, skb->data, len); + spin_unlock_irqrestore(&card->lock, flags); + } + + dev_kfree_skb_any(skb); + return CAPI_NOERROR; +} +/* ------------------------------------------------------------- */ + +static char *t1isa_procinfo(struct capi_ctr *ctrl) +{ + avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); + + if (!cinfo) + return ""; + sprintf(cinfo->infobuf, "%s %s 0x%x %d %d", + cinfo->cardname[0] ? cinfo->cardname : "-", + cinfo->version[VER_DRIVER] ? cinfo->version[VER_DRIVER] : "-", + cinfo->card ? cinfo->card->port : 0x0, + cinfo->card ? cinfo->card->irq : 0, + cinfo->card ? cinfo->card->cardnr : 0 + ); + return cinfo->infobuf; +} + + +/* ------------------------------------------------------------- */ + +#define MAX_CARDS 4 +static struct pci_dev isa_dev[MAX_CARDS]; +static int io[MAX_CARDS]; +static int irq[MAX_CARDS]; +static int cardnr[MAX_CARDS]; + +MODULE_PARM(io, "1-" __MODULE_STRING(MAX_CARDS) "i"); +MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_CARDS) "i"); +MODULE_PARM(cardnr, "1-" __MODULE_STRING(MAX_CARDS) "i"); +MODULE_PARM_DESC(io, "I/O base address(es)"); +MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)"); +MODULE_PARM_DESC(cardnr, "Card number(s) (as jumpered)"); + +static int t1isa_add_card(struct capi_driver *driver, capicardparams *data) +{ + int i; + + for (i = 0; i < MAX_CARDS; i++) { + if (isa_dev[i].resource[0].start) + continue; + + isa_dev[i].resource[0].start = data->port; + isa_dev[i].irq = data->irq; + + if (t1isa_probe(&isa_dev[i], data->cardnr) == 0) + return 0; + } + return -ENODEV; +} + +static struct capi_driver capi_driver_t1isa = { + .name = "t1isa", + .revision = "1.0", + .add_card = t1isa_add_card, +}; + +static int __init t1isa_init(void) +{ + char rev[32]; + char *p; + int i; + + if ((p = strchr(revision, ':')) != 0 && p[1]) { + strlcpy(rev, p + 2, 32); + if ((p = strchr(rev, '$')) != 0 && p > rev) + *(p-1) = 0; + } else + strcpy(rev, "1.0"); + + for (i = 0; i < MAX_CARDS; i++) { + if (!io[i]) + break; + + isa_dev[i].resource[0].start = io[i]; + isa_dev[i].irq = irq[i]; + + if (t1isa_probe(&isa_dev[i], cardnr[i]) != 0) + return -ENODEV; + } + + strlcpy(capi_driver_t1isa.revision, rev, 32); + register_capi_driver(&capi_driver_t1isa); + printk(KERN_INFO "t1isa: revision %s\n", rev); + + return 0; +} + +static void __exit t1isa_exit(void) +{ + int i; + + for (i = 0; i < MAX_CARDS; i++) { + if (!io[i]) + break; + + t1isa_remove(&isa_dev[i]); + } +} + +module_init(t1isa_init); +module_exit(t1isa_exit); |