/* $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 <linux/gfp.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) { 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); if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) { spin_unlock_irqrestore(&card->lock, flags); 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)); spin_unlock_irqrestore(&card->lock, flags); 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); capilib_new_ncci(&cinfo->ncci_head, ApplId, NCCI, WindowSize); spin_unlock_irqrestore(&card->lock, flags); break; case RECEIVE_FREE_NCCI: ApplId = b1_get_word(card->port); NCCI = b1_get_word(card->port); if (NCCI != 0xffffffff) capilib_free_ncci(&cinfo->ncci_head, ApplId, NCCI); spin_unlock_irqrestore(&card->lock, flags); 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; } static void t1isa_reset_ctr(struct capi_ctr *ctrl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; unsigned int port = card->port; unsigned long flags; t1_disable_irq(port); b1_reset(port); b1_reset(port); memset(cinfo->version, 0, sizeof(cinfo->version)); spin_lock_irqsave(&card->lock, flags); capilib_release(&cinfo->ncci_head); spin_unlock_irqrestore(&card->lock, flags); capi_ctr_down(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.proc_fops = &b1ctl_proc_fops; 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; spin_lock_irqsave(&card->lock, flags); 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) { spin_unlock_irqrestore(&card->lock, flags); return retval; } dlen = CAPIMSG_DATALEN(skb->data); b1_put_byte(port, SEND_DATA_B3_REQ); t1_put_slice(port, skb->data, len); t1_put_slice(port, skb->data + len, dlen); } else { 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_param_array(io, int, NULL, 0); module_param_array(irq, int, NULL, 0); module_param_array(cardnr, int, NULL, 0); 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, ':')) != NULL && p[1]) { strlcpy(rev, p + 2, 32); if ((p = strchr(rev, '$')) != NULL && 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; unregister_capi_driver(&capi_driver_t1isa); for (i = 0; i < MAX_CARDS; i++) { if (!io[i]) break; t1isa_remove(&isa_dev[i]); } } module_init(t1isa_init); module_exit(t1isa_exit);