/* $Id: b1.c,v 1.1.2.2 2004/01/16 21:09:27 keil Exp $ * * Common module for AVM B1 cards. * * Copyright 1999 by Carsten Paeth * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "avmcard.h" #include #include static char *revision = "$Revision: 1.1.2.2 $"; /* ------------------------------------------------------------- */ MODULE_DESCRIPTION("CAPI4Linux: Common support for active AVM cards"); MODULE_AUTHOR("Carsten Paeth"); MODULE_LICENSE("GPL"); /* ------------------------------------------------------------- */ int b1_irq_table[16] = {0, 0, 0, 192, /* irq 3 */ 32, /* irq 4 */ 160, /* irq 5 */ 96, /* irq 6 */ 224, /* irq 7 */ 0, 64, /* irq 9 */ 80, /* irq 10 */ 208, /* irq 11 */ 48, /* irq 12 */ 0, 0, 112, /* irq 15 */ }; /* ------------------------------------------------------------- */ avmcard *b1_alloc_card(int nr_controllers) { avmcard *card; avmctrl_info *cinfo; int i; card = kzalloc(sizeof(*card), GFP_KERNEL); if (!card) return NULL; cinfo = kzalloc(sizeof(*cinfo) * nr_controllers, GFP_KERNEL); if (!cinfo) { kfree(card); return NULL; } card->ctrlinfo = cinfo; for (i = 0; i < nr_controllers; i++) { INIT_LIST_HEAD(&cinfo[i].ncci_head); cinfo[i].card = card; } spin_lock_init(&card->lock); card->nr_controllers = nr_controllers; return card; } /* ------------------------------------------------------------- */ void b1_free_card(avmcard *card) { kfree(card->ctrlinfo); kfree(card); } /* ------------------------------------------------------------- */ int b1_detect(unsigned int base, enum avmcardtype cardtype) { int onoff, i; /* * Statusregister 0000 00xx */ if ((inb(base + B1_INSTAT) & 0xfc) || (inb(base + B1_OUTSTAT) & 0xfc)) return 1; /* * Statusregister 0000 001x */ b1outp(base, B1_INSTAT, 0x2); /* enable irq */ /* b1outp(base, B1_OUTSTAT, 0x2); */ if ((inb(base + B1_INSTAT) & 0xfe) != 0x2 /* || (inb(base + B1_OUTSTAT) & 0xfe) != 0x2 */) return 2; /* * Statusregister 0000 000x */ b1outp(base, B1_INSTAT, 0x0); /* disable irq */ b1outp(base, B1_OUTSTAT, 0x0); if ((inb(base + B1_INSTAT) & 0xfe) || (inb(base + B1_OUTSTAT) & 0xfe)) return 3; for (onoff = !0, i= 0; i < 10 ; i++) { b1_set_test_bit(base, cardtype, onoff); if (b1_get_test_bit(base, cardtype) != onoff) return 4; onoff = !onoff; } if (cardtype == avm_m1) return 0; if ((b1_rd_reg(base, B1_STAT1(cardtype)) & 0x0f) != 0x01) return 5; return 0; } void b1_getrevision(avmcard *card) { card->class = inb(card->port + B1_ANALYSE); card->revision = inb(card->port + B1_REVISION); } #define FWBUF_SIZE 256 int b1_load_t4file(avmcard *card, capiloaddatapart * t4file) { unsigned char buf[FWBUF_SIZE]; unsigned char *dp; int i, left; unsigned int base = card->port; dp = t4file->data; left = t4file->len; while (left > FWBUF_SIZE) { if (t4file->user) { if (copy_from_user(buf, dp, FWBUF_SIZE)) return -EFAULT; } else { memcpy(buf, dp, FWBUF_SIZE); } for (i = 0; i < FWBUF_SIZE; i++) if (b1_save_put_byte(base, buf[i]) < 0) { printk(KERN_ERR "%s: corrupted firmware file ?\n", card->name); return -EIO; } left -= FWBUF_SIZE; dp += FWBUF_SIZE; } if (left) { if (t4file->user) { if (copy_from_user(buf, dp, left)) return -EFAULT; } else { memcpy(buf, dp, left); } for (i = 0; i < left; i++) if (b1_save_put_byte(base, buf[i]) < 0) { printk(KERN_ERR "%s: corrupted firmware file ?\n", card->name); return -EIO; } } return 0; } int b1_load_config(avmcard *card, capiloaddatapart * config) { unsigned char buf[FWBUF_SIZE]; unsigned char *dp; unsigned int base = card->port; int i, j, left; dp = config->data; left = config->len; if (left) { b1_put_byte(base, SEND_CONFIG); b1_put_word(base, 1); b1_put_byte(base, SEND_CONFIG); b1_put_word(base, left); } while (left > FWBUF_SIZE) { if (config->user) { if (copy_from_user(buf, dp, FWBUF_SIZE)) return -EFAULT; } else { memcpy(buf, dp, FWBUF_SIZE); } for (i = 0; i < FWBUF_SIZE; ) { b1_put_byte(base, SEND_CONFIG); for (j=0; j < 4; j++) { b1_put_byte(base, buf[i++]); } } left -= FWBUF_SIZE; dp += FWBUF_SIZE; } if (left) { if (config->user) { if (copy_from_user(buf, dp, left)) return -EFAULT; } else { memcpy(buf, dp, left); } for (i = 0; i < left; ) { b1_put_byte(base, SEND_CONFIG); for (j=0; j < 4; j++) { if (i < left) b1_put_byte(base, buf[i++]); else b1_put_byte(base, 0); } } } return 0; } int b1_loaded(avmcard *card) { unsigned int base = card->port; unsigned long stop; unsigned char ans; unsigned long tout = 2; for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) { if (b1_tx_empty(base)) break; } if (!b1_tx_empty(base)) { printk(KERN_ERR "%s: b1_loaded: tx err, corrupted t4 file ?\n", card->name); return 0; } b1_put_byte(base, SEND_POLL); for (stop = jiffies + tout * HZ; time_before(jiffies, stop);) { if (b1_rx_full(base)) { if ((ans = b1_get_byte(base)) == RECEIVE_POLL) { return 1; } printk(KERN_ERR "%s: b1_loaded: got 0x%x, firmware not running\n", card->name, ans); return 0; } } printk(KERN_ERR "%s: b1_loaded: firmware not running\n", card->name); return 0; } /* ------------------------------------------------------------- */ int b1_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; 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; } b1_disable_irq(port); 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*2); b1_put_word(port, ctrl->cnr - 1); spin_unlock_irqrestore(&card->lock, flags); return 0; } void b1_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; 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_reseted(ctrl); } void b1_register_appl(struct capi_ctr *ctrl, u16 appl, capi_register_params *rp) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; unsigned int port = card->port; unsigned long flags; int nconn, want = rp->level3cnt; if (want > 0) nconn = want; else nconn = ctrl->profile.nbchannel * -want; if (nconn == 0) nconn = ctrl->profile.nbchannel; spin_lock_irqsave(&card->lock, flags); b1_put_byte(port, SEND_REGISTER); b1_put_word(port, appl); b1_put_word(port, 1024 * (nconn+1)); b1_put_word(port, nconn); b1_put_word(port, rp->datablkcnt); b1_put_word(port, rp->datablklen); spin_unlock_irqrestore(&card->lock, flags); } void b1_release_appl(struct capi_ctr *ctrl, u16 appl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; unsigned int port = card->port; unsigned long flags; spin_lock_irqsave(&card->lock, flags); capilib_release_appl(&cinfo->ncci_head, appl); b1_put_byte(port, SEND_RELEASE); b1_put_word(port, appl); spin_unlock_irqrestore(&card->lock, flags); } u16 b1_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); b1_put_slice(port, skb->data, len); b1_put_slice(port, skb->data + len, dlen); } else { b1_put_byte(port, SEND_MESSAGE); b1_put_slice(port, skb->data, len); } spin_unlock_irqrestore(&card->lock, flags); dev_kfree_skb_any(skb); return CAPI_NOERROR; } /* ------------------------------------------------------------- */ void b1_parse_version(avmctrl_info *cinfo) { struct capi_ctr *ctrl = &cinfo->capi_ctrl; avmcard *card = cinfo->card; capi_profile *profp; u8 *dversion; u8 flag; int i, j; for (j = 0; j < AVM_MAXVERSION; j++) cinfo->version[j] = "\0\0" + 1; for (i = 0, j = 0; j < AVM_MAXVERSION && i < cinfo->versionlen; j++, i += cinfo->versionbuf[i] + 1) cinfo->version[j] = &cinfo->versionbuf[i + 1]; strlcpy(ctrl->serial, cinfo->version[VER_SERIAL], sizeof(ctrl->serial)); memcpy(&ctrl->profile, cinfo->version[VER_PROFILE],sizeof(capi_profile)); strlcpy(ctrl->manu, "AVM GmbH", sizeof(ctrl->manu)); dversion = cinfo->version[VER_DRIVER]; ctrl->version.majorversion = 2; ctrl->version.minorversion = 0; ctrl->version.majormanuversion = (((dversion[0] - '0') & 0xf) << 4); ctrl->version.majormanuversion |= ((dversion[2] - '0') & 0xf); ctrl->version.minormanuversion = (dversion[3] - '0') << 4; ctrl->version.minormanuversion |= (dversion[5] - '0') * 10 + ((dversion[6] - '0') & 0xf); profp = &ctrl->profile; flag = ((u8 *)(profp->manu))[1]; switch (flag) { case 0: if (cinfo->version[VER_CARDTYPE]) strcpy(cinfo->cardname, cinfo->version[VER_CARDTYPE]); else strcpy(cinfo->cardname, "B1"); break; case 3: strcpy(cinfo->cardname,"PCMCIA B"); break; case 4: strcpy(cinfo->cardname,"PCMCIA M1"); break; case 5: strcpy(cinfo->cardname,"PCMCIA M2"); break; case 6: strcpy(cinfo->cardname,"B1 V3.0"); break; case 7: strcpy(cinfo->cardname,"B1 PCI"); break; default: sprintf(cinfo->cardname, "AVM?%u", (unsigned int)flag); break; } printk(KERN_NOTICE "%s: card %d \"%s\" ready.\n", card->name, ctrl->cnr, cinfo->cardname); flag = ((u8 *)(profp->manu))[3]; if (flag) printk(KERN_NOTICE "%s: card %d Protocol:%s%s%s%s%s%s%s\n", card->name, ctrl->cnr, (flag & 0x01) ? " DSS1" : "", (flag & 0x02) ? " CT1" : "", (flag & 0x04) ? " VN3" : "", (flag & 0x08) ? " NI1" : "", (flag & 0x10) ? " AUSTEL" : "", (flag & 0x20) ? " ESS" : "", (flag & 0x40) ? " 1TR6" : "" ); flag = ((u8 *)(profp->manu))[5]; if (flag) printk(KERN_NOTICE "%s: card %d Linetype:%s%s%s%s\n", card->name, ctrl->cnr, (flag & 0x01) ? " point to point" : "", (flag & 0x02) ? " point to multipoint" : "", (flag & 0x08) ? " leased line without D-channel" : "", (flag & 0x04) ? " leased line with D-channel" : "" ); } /* ------------------------------------------------------------- */ irqreturn_t b1_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); if (!b1_rx_full(card->port)) { spin_unlock_irqrestore(&card->lock, flags); return IRQ_NONE; } b1cmd = b1_get_byte(card->port); switch (b1cmd) { case RECEIVE_DATA_B3_IND: ApplId = (unsigned) b1_get_word(card->port); MsgLen = b1_get_slice(card->port, card->msgbuf); DataB3Len = b1_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 = b1_get_slice(card->port, card->msgbuf); if (!(skb = alloc_skb(MsgLen, GFP_ATOMIC))) { printk(KERN_ERR "%s: incoming packet dropped\n", card->name); spin_unlock_irqrestore(&card->lock, flags); } else { memcpy(skb_put(skb, MsgLen), card->msgbuf, MsgLen); if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_CONF) 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 = b1_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 = b1_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 = b1_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 removed ?\n", card->name); return IRQ_NONE; default: spin_unlock_irqrestore(&card->lock, flags); printk(KERN_ERR "%s: b1_interrupt: 0x%x ???\n", card->name, b1cmd); return IRQ_HANDLED; } return IRQ_HANDLED; } /* ------------------------------------------------------------- */ int b1ctl_read_proc(char *page, char **start, off_t off, int count, int *eof, struct capi_ctr *ctrl) { avmctrl_info *cinfo = (avmctrl_info *)(ctrl->driverdata); avmcard *card = cinfo->card; u8 flag; int len = 0; char *s; len += sprintf(page+len, "%-16s %s\n", "name", card->name); len += sprintf(page+len, "%-16s 0x%x\n", "io", card->port); len += sprintf(page+len, "%-16s %d\n", "irq", card->irq); switch (card->cardtype) { case avm_b1isa: s = "B1 ISA"; break; case avm_b1pci: s = "B1 PCI"; break; case avm_b1pcmcia: s = "B1 PCMCIA"; break; case avm_m1: s = "M1"; break; case avm_m2: s = "M2"; break; case avm_t1isa: s = "T1 ISA (HEMA)"; break; case avm_t1pci: s = "T1 PCI"; break; case avm_c4: s = "C4"; break; case avm_c2: s = "C2"; break; default: s = "???"; break; } len += sprintf(page+len, "%-16s %s\n", "type", s); if (card->cardtype == avm_t1isa) len += sprintf(page+len, "%-16s %d\n", "cardnr", card->cardnr); if ((s = cinfo->version[VER_DRIVER]) != 0) len += sprintf(page+len, "%-16s %s\n", "ver_driver", s); if ((s = cinfo->version[VER_CARDTYPE]) != 0) len += sprintf(page+len, "%-16s %s\n", "ver_cardtype", s); if ((s = cinfo->version[VER_SERIAL]) != 0) len += sprintf(page+len, "%-16s %s\n", "ver_serial", s); if (card->cardtype != avm_m1) { flag = ((u8 *)(ctrl->profile.manu))[3]; if (flag) len += sprintf(page+len, "%-16s%s%s%s%s%s%s%s\n", "protocol", (flag & 0x01) ? " DSS1" : "", (flag & 0x02) ? " CT1" : "", (flag & 0x04) ? " VN3" : "", (flag & 0x08) ? " NI1" : "", (flag & 0x10) ? " AUSTEL" : "", (flag & 0x20) ? " ESS" : "", (flag & 0x40) ? " 1TR6" : "" ); } if (card->cardtype != avm_m1) { flag = ((u8 *)(ctrl->profile.manu))[5]; if (flag) len += sprintf(page+len, "%-16s%s%s%s%s\n", "linetype", (flag & 0x01) ? " point to point" : "", (flag & 0x02) ? " point to multipoint" : "", (flag & 0x08) ? " leased line without D-channel" : "", (flag & 0x04) ? " leased line with D-channel" : "" ); } len += sprintf(page+len, "%-16s %s\n", "cardname", cinfo->cardname); if (off+count >= len) *eof = 1; if (len < off) return 0; *start = page + off; return ((count < len-off) ? count : len-off); } /* ------------------------------------------------------------- */ #ifdef CONFIG_PCI avmcard_dmainfo * avmcard_dma_alloc(char *name, struct pci_dev *pdev, long rsize, long ssize) { avmcard_dmainfo *p; void *buf; p = kzalloc(sizeof(avmcard_dmainfo), GFP_KERNEL); if (!p) { printk(KERN_WARNING "%s: no memory.\n", name); goto err; } p->recvbuf.size = rsize; buf = pci_alloc_consistent(pdev, rsize, &p->recvbuf.dmaaddr); if (!buf) { printk(KERN_WARNING "%s: allocation of receive dma buffer failed.\n", name); goto err_kfree; } p->recvbuf.dmabuf = buf; p->sendbuf.size = ssize; buf = pci_alloc_consistent(pdev, ssize, &p->sendbuf.dmaaddr); if (!buf) { printk(KERN_WARNING "%s: allocation of send dma buffer failed.\n", name); goto err_free_consistent; } p->sendbuf.dmabuf = buf; skb_queue_head_init(&p->send_queue); return p; err_free_consistent: pci_free_consistent(p->pcidev, p->recvbuf.size, p->recvbuf.dmabuf, p->recvbuf.dmaaddr); err_kfree: kfree(p); err: return NULL; } void avmcard_dma_free(avmcard_dmainfo *p) { pci_free_consistent(p->pcidev, p->recvbuf.size, p->recvbuf.dmabuf, p->recvbuf.dmaaddr); pci_free_consistent(p->pcidev, p->sendbuf.size, p->sendbuf.dmabuf, p->sendbuf.dmaaddr); skb_queue_purge(&p->send_queue); kfree(p); } EXPORT_SYMBOL(avmcard_dma_alloc); EXPORT_SYMBOL(avmcard_dma_free); #endif EXPORT_SYMBOL(b1_irq_table); EXPORT_SYMBOL(b1_alloc_card); EXPORT_SYMBOL(b1_free_card); EXPORT_SYMBOL(b1_detect); EXPORT_SYMBOL(b1_getrevision); EXPORT_SYMBOL(b1_load_t4file); EXPORT_SYMBOL(b1_load_config); EXPORT_SYMBOL(b1_loaded); EXPORT_SYMBOL(b1_load_firmware); EXPORT_SYMBOL(b1_reset_ctr); EXPORT_SYMBOL(b1_register_appl); EXPORT_SYMBOL(b1_release_appl); EXPORT_SYMBOL(b1_send_message); EXPORT_SYMBOL(b1_parse_version); EXPORT_SYMBOL(b1_interrupt); EXPORT_SYMBOL(b1ctl_read_proc); static int __init b1_init(void) { char *p; char rev[32]; 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"); printk(KERN_INFO "b1: revision %s\n", rev); return 0; } static void __exit b1_exit(void) { } module_init(b1_init); module_exit(b1_exit);