Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 9 Dec 2002 16:10:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 9 Dec 2002 16:10:41 -0500 Received: from mail.scram.de ([195.226.127.117]:50632 "EHLO mail.scram.de") by vger.kernel.org with ESMTP id ; Mon, 9 Dec 2002 16:10:32 -0500 Date: Mon, 9 Dec 2002 22:11:14 +0100 (CET) From: Jochen Friedrich X-X-Sender: jochen@gfrw1044.bocc.de To: Linux Kernel cc: Jeff Garzik , Subject: [PATCH] tms380tr / tmsisa 2.5.50 Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 18726 Lines: 659 Hi, This one fixes the following problems: o add spinlock to fix race condition in tms380tr. o fix startup of tmsisa to not register and unregister devices multiple times, so hotplug doesn't run wild. o add support for statically compiling tmsisa into kernel. o remove unnecessary console SPAM during boot. o fixed probing of ISA devices in tmsisa. o fixed unsafe reference counting. --jochen diff -u -r linux-2.5.50.orig/drivers/net/Space.c linux-2.5.50/drivers/net/Space.c --- linux-2.5.50.orig/drivers/net/Space.c 2002-11-27 23:35:50.000000000 +0100 +++ linux-2.5.50/drivers/net/Space.c 2002-12-08 13:45:06.000000000 +0100 @@ -563,6 +563,7 @@ #ifdef CONFIG_TR /* Token-ring device probe */ extern int ibmtr_probe(struct net_device *); +extern int tms_isa_probe(struct net_device *dev); extern int smctr_probe(struct net_device *); static int @@ -572,6 +573,9 @@ #ifdef CONFIG_IBMTR && ibmtr_probe(dev) #endif +#ifdef CONFIG_TMSISA + && tms_isa_probe(dev) +#endif #ifdef CONFIG_SMCTR && smctr_probe(dev) #endif diff -u -r linux-2.5.50.orig/drivers/net/tokenring/tms380tr.c linux-2.5.50/drivers/net/tokenring/tms380tr.c --- linux-2.5.50.orig/drivers/net/tokenring/tms380tr.c 2002-11-27 23:36:03.000000000 +0100 +++ linux-2.5.50/drivers/net/tokenring/tms380tr.c 2002-12-09 22:09:32.000000000 +0100 @@ -57,6 +57,9 @@ * as well. * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some * cleanup. + * 13-Jan-02 JF Add spinlock to fix race condition. + * 09-Nov-02 JF Fixed printks to not SPAM the console during + * normal operation. * * To do: * 1. Multi/Broadcast packet handling (this may have fixed itself) @@ -68,7 +71,7 @@ */ #ifdef MODULE -static const char version[] = "tms380tr.c: v1.08 14/01/2001 by Christoph Goos, Adam Fritzler\n"; +static const char version[] = "tms380tr.c: v1.09 09/11/2002 by Christoph Goos, Adam Fritzler\n"; #endif #include @@ -233,7 +236,7 @@ static int __init tms380tr_init_card(struct net_device *dev) { if(tms380tr_debug > 3) - printk("%s: tms380tr_init_card\n", dev->name); + printk(KERN_DEBUG "%s: tms380tr_init_card\n", dev->name); return (0); } @@ -251,6 +254,9 @@ struct net_local *tp = (struct net_local *)dev->priv; int err; + /* init the spinlock */ + spin_lock_init(tp->lock); + /* Reset the hardware here. Don't forget to set the station address. */ if(dev->dma > 0) @@ -276,7 +282,7 @@ tp->timer.data = (unsigned long)dev; add_timer(&tp->timer); - printk(KERN_INFO "%s: Adapter RAM size: %dK\n", + printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n", dev->name, tms380tr_read_ptr(dev)); tms380tr_enable_interrupts(dev); @@ -339,25 +345,25 @@ tms380tr_init_net_local(dev); if(tms380tr_debug > 3) - printk(KERN_INFO "%s: Resetting adapter...\n", dev->name); + printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name); err = tms380tr_reset_adapter(dev); if(err < 0) return (-1); if(tms380tr_debug > 3) - printk(KERN_INFO "%s: Bringup diags...\n", dev->name); + printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name); err = tms380tr_bringup_diags(dev); if(err < 0) return (-1); if(tms380tr_debug > 3) - printk(KERN_INFO "%s: Init adapter...\n", dev->name); + printk(KERN_DEBUG "%s: Init adapter...\n", dev->name); err = tms380tr_init_adapter(dev); if(err < 0) return (-1); if(tms380tr_debug > 3) - printk(KERN_INFO "%s: Done!\n", dev->name); + printk(KERN_DEBUG "%s: Done!\n", dev->name); return (0); } @@ -628,6 +634,7 @@ TPL *tpl; short length; unsigned char *buf; + unsigned long flags; struct sk_buff *skb; int i; dma_addr_t dmabuf, newbuf; @@ -639,18 +646,22 @@ * NOTE: We *must* always leave one unused TPL in the chain, * because otherwise the adapter might send frames twice. */ + spin_lock_irqsave(&tp->lock, flags); if(tp->TplFree->NextTPLPtr->BusyFlag) /* No free TPL */ { if (tms380tr_debug > 0) - printk(KERN_INFO "%s: No free TPL\n", dev->name); + printk(KERN_DEBUG "%s: No free TPL\n", dev->name); + spin_unlock_irqrestore(&tp->lock, flags); return; } /* Send first buffer from queue */ skb = skb_dequeue(&tp->SendSkbQueue); if(skb == NULL) + { + spin_unlock_irqrestore(&tp->lock, flags); return; - + } tp->QueueSkb++; dmabuf = 0; @@ -698,6 +709,7 @@ /* Let adapter send the frame. */ tms380tr_exec_sifcmd(dev, CMD_TX_VALID); + spin_unlock_irqrestore(&tp->lock, flags); } return; @@ -773,7 +785,7 @@ unsigned short irq_type; if(dev == NULL) { - printk("%s: irq %d for unknown device.\n", dev->name, irq); + printk(KERN_INFO "%s: irq %d for unknown device.\n", dev->name, irq); return; } @@ -785,7 +797,7 @@ irq_type &= STS_IRQ_MASK; if(!tms380tr_chk_ssb(tp, irq_type)) { - printk(KERN_INFO "%s: DATA LATE occurred\n", dev->name); + printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name); break; } @@ -843,7 +855,7 @@ break; default: - printk(KERN_INFO "Unknown Token Ring IRQ (0x%04x)\n", irq_type); + printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type); break; } @@ -1377,7 +1389,7 @@ do { retry_cnt--; if(tms380tr_debug > 3) - printk(KERN_INFO "BUD-Status: "); + printk(KERN_DEBUG "BUD-Status: "); loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/ do { /* Inspect BUD results */ loop_cnt--; @@ -1386,7 +1398,7 @@ Status &= STS_MASK; if(tms380tr_debug > 3) - printk(KERN_INFO " %04X \n", Status); + printk(KERN_DEBUG " %04X \n", Status); /* BUD successfully completed */ if(Status == STS_INITIALIZE) return (1); @@ -1443,10 +1455,10 @@ if(tms380tr_debug > 3) { - printk(KERN_INFO "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb); - printk(KERN_INFO "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + tp->dmabuffer); - printk(KERN_INFO "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer); - printk(KERN_INFO "%s: buffer (tp) : %lx\n", dev->name, (long) tp); + printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb); + printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + tp->dmabuffer); + printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer); + printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp); } /* Maximum: three initialization retries */ retry_cnt = INIT_MAX_RETRIES; @@ -1797,7 +1809,7 @@ if(tms380tr_debug > 3) { - printk("%s: AdapterCheckBlock: ", dev->name); + printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name); for (i = 0; i < 4; i++) printk("%04X", AdapterCheckBlock[i]); printk("\n"); @@ -1874,52 +1886,52 @@ break; case ILLEGAL_OP_CODE: - printk("%s: Illegal operation code in firmware\n", + printk(KERN_INFO "%s: Illegal operation code in firmware\n", dev->name); /* Parm[0-3]: adapter internal register R13-R15 */ break; case PARITY_ERRORS: - printk("%s: Adapter internal bus parity error\n", + printk(KERN_INFO "%s: Adapter internal bus parity error\n", dev->name); /* Parm[0-3]: adapter internal register R13-R15 */ break; case RAM_DATA_ERROR: - printk("%s: RAM data error\n", dev->name); + printk(KERN_INFO "%s: RAM data error\n", dev->name); /* Parm[0-1]: MSW/LSW address of RAM location. */ break; case RAM_PARITY_ERROR: - printk("%s: RAM parity error\n", dev->name); + printk(KERN_INFO "%s: RAM parity error\n", dev->name); /* Parm[0-1]: MSW/LSW address of RAM location. */ break; case RING_UNDERRUN: - printk("%s: Internal DMA underrun detected\n", + printk(KERN_INFO "%s: Internal DMA underrun detected\n", dev->name); break; case INVALID_IRQ: - printk("%s: Unrecognized interrupt detected\n", + printk(KERN_INFO "%s: Unrecognized interrupt detected\n", dev->name); /* Parm[0-3]: adapter internal register R13-R15 */ break; case INVALID_ERROR_IRQ: - printk("%s: Unrecognized error interrupt detected\n", + printk(KERN_INFO "%s: Unrecognized error interrupt detected\n", dev->name); /* Parm[0-3]: adapter internal register R13-R15 */ break; case INVALID_XOP: - printk("%s: Unrecognized XOP request detected\n", + printk(KERN_INFO "%s: Unrecognized XOP request detected\n", dev->name); /* Parm[0-3]: adapter internal register R13-R15 */ break; default: - printk("%s: Unknown status", dev->name); + printk(KERN_INFO "%s: Unknown status", dev->name); break; } @@ -2070,14 +2082,14 @@ if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED)) { - printk(KERN_INFO "%s: (DA=%08lX not recognized)", + printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n", dev->name, *(unsigned long *)&tpl->MData[2+2]); } else { if(tms380tr_debug > 3) - printk("%s: Directed frame tx'd\n", + printk(KERN_DEBUG "%s: Directed frame tx'd\n", dev->name); } } @@ -2086,7 +2098,7 @@ if(!DIRECTED_FRAME(tpl)) { if(tms380tr_debug > 3) - printk("%s: Broadcast frame tx'd\n", + printk(KERN_DEBUG "%s: Broadcast frame tx'd\n", dev->name); } } @@ -2163,7 +2175,7 @@ tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length); if(tms380tr_debug > 3) - printk("%s: Packet Length %04X (%d)\n", + printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n", dev->name, Length, Length); /* Indicate the received frame to system the @@ -2347,12 +2359,11 @@ if (dev->priv == NULL) { struct net_local *tms_local; - dma_addr_t buffer; dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL | GFP_DMA); if (dev->priv == NULL) { - printk("%s: Out of memory for DMA\n", + printk(KERN_INFO "%s: Out of memory for DMA\n", dev->name); return -ENOMEM; } @@ -2361,16 +2372,15 @@ init_waitqueue_head(&tms_local->wait_for_tok_int); tms_local->dmalimit = dmalimit; tms_local->pdev = pdev; - buffer = pci_map_single(pdev, (void *)tms_local, + tms_local->dmabuffer = pci_map_single(pdev, (void *)tms_local, sizeof(struct net_local), PCI_DMA_BIDIRECTIONAL); - if (buffer + sizeof(struct net_local) > dmalimit) + if (tms_local->dmabuffer + sizeof(struct net_local) > dmalimit) { - printk("%s: Memory not accessible for DMA\n", + printk(KERN_INFO "%s: Memory not accessible for DMA\n", dev->name); tmsdev_term(dev); return -ENOMEM; } - tms_local->dmabuffer = buffer; } /* These can be overridden by the card driver if needed */ @@ -2401,7 +2411,7 @@ int init_module(void) { - printk("%s", version); + printk(KERN_DEBUG "%s", version); TMS380_module = &__this_module; return 0; diff -u -r linux-2.5.50.orig/drivers/net/tokenring/tms380tr.h linux-2.5.50/drivers/net/tokenring/tms380tr.h --- linux-2.5.50.orig/drivers/net/tokenring/tms380tr.h 2002-11-27 23:35:55.000000000 +0100 +++ linux-2.5.50/drivers/net/tokenring/tms380tr.h 2002-12-09 20:49:10.000000000 +0100 @@ -1135,6 +1135,7 @@ unsigned short (*sifreadw)(struct net_device *, unsigned short); void (*sifwritew)(struct net_device *, unsigned short, unsigned short); + spinlock_t lock; /* SMP protection */ void *tmspriv; } NET_LOCAL; diff -u -r linux-2.5.50.orig/drivers/net/tokenring/tmsisa.c linux-2.5.50/drivers/net/tokenring/tmsisa.c --- linux-2.5.50.orig/drivers/net/tokenring/tmsisa.c 2002-11-27 23:35:49.000000000 +0100 +++ linux-2.5.50/drivers/net/tokenring/tmsisa.c 2002-12-09 22:10:02.000000000 +0100 @@ -16,10 +16,19 @@ * AF Adam Fritzler mid@auk.cx * JF Jochen Friedrich jochen@scram.de * + * Modification History: + * 14-Jan-01 JF Created + * 28-Oct-02 JF Fixed probe of card for static compilation. + * Fixed module init to not make hotplug go wild. + * 09-Nov-02 JF Fixed early bail out on out of memory + * situations if multiple cards are found. + * Cleaned up some unnecessary console SPAM. + * 09-Dec-02 JF Fixed module reference counting. + * * TODO: * 1. Add support for Proteon TR ISA adapters (1392, 1392+) */ -static const char version[] = "tmsisa.c: v1.00 14/01/2001 by Jochen Friedrich\n"; +static const char version[] = "tmsisa.c: v1.02 09/11/2002 by Jochen Friedrich\n"; #include #include @@ -130,22 +139,54 @@ { static int versionprinted; struct net_local *tp; - int j; + int i,j; struct tms_isa_card *card; - if(check_region(dev->base_addr, TMS_ISA_IO_EXTENT)) - return -1; + SET_MODULE_OWNER(dev); + if (!dev->base_addr) + { + for(i = 0; portlist[i]; i++) + { + if (!request_region(portlist[i], TMS_ISA_IO_EXTENT, isa_cardname)) + continue; + + if(tms_isa_probe1(portlist[i])) + { + release_region(dev->base_addr, TMS_ISA_IO_EXTENT); + continue; + } + + dev->base_addr = portlist[i]; + break; + } + if(!dev->base_addr) + return -1; + } + else + { + if (!request_region(dev->base_addr, TMS_ISA_IO_EXTENT, isa_cardname)) + return -1; + + if(tms_isa_probe1(dev->base_addr)) + { + release_region(dev->base_addr, TMS_ISA_IO_EXTENT); + return -1; + } + } - if(tms_isa_probe1(dev->base_addr)) - return -1; - - if (versionprinted++ == 0) - printk("%s", version); - /* At this point we have found a valid card. */ - - if (!request_region(dev->base_addr, TMS_ISA_IO_EXTENT, isa_cardname)) + + if (versionprinted++ == 0) + printk(KERN_DEBUG "%s", version); + +#ifndef MODULE + dev = init_trdev(dev, 0); + if (!dev) + { + release_region(dev->base_addr, TMS_ISA_IO_EXTENT); return -1; + } +#endif if (tmsdev_init(dev, ISA_MAX_ADDRESS, NULL)) { @@ -157,7 +198,7 @@ tms_isa_read_eeprom(dev); - printk("%s: Ring Station Address: ", dev->name); + printk(KERN_DEBUG "%s: Ring Station Address: ", dev->name); printk("%2.2x", dev->dev_addr[0]); for (j = 1; j < 6; j++) printk(":%2.2x", dev->dev_addr[j]); @@ -180,7 +221,7 @@ if (dev->irq == 0) { - for(j = 0; irqlist[j] != 0; j++) + for(j = 2; irqlist[j] != 0; j++) { dev->irq = irqlist[j]; if (!request_irq(dev->irq, tms380tr_interrupt, 0, @@ -190,7 +231,7 @@ if(irqlist[j] == 0) { - printk("%s: AutoSelect no IRQ available\n", dev->name); + printk(KERN_INFO "%s: AutoSelect no IRQ available\n", dev->name); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); tmsdev_term(dev); return -1; @@ -203,7 +244,7 @@ break; if (irqlist[j] == 0) { - printk("%s: Illegal IRQ %d specified\n", + printk(KERN_INFO "%s: Illegal IRQ %d specified\n", dev->name, dev->irq); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); tmsdev_term(dev); @@ -212,7 +253,7 @@ if (request_irq(dev->irq, tms380tr_interrupt, 0, isa_cardname, dev)) { - printk("%s: Selected IRQ %d not available\n", + printk(KERN_INFO "%s: Selected IRQ %d not available\n", dev->name, dev->irq); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); tmsdev_term(dev); @@ -231,7 +272,7 @@ if(dmalist[j] == 0) { - printk("%s: AutoSelect no DMA available\n", dev->name); + printk(KERN_INFO "%s: AutoSelect no DMA available\n", dev->name); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); free_irq(dev->irq, dev); tmsdev_term(dev); @@ -245,7 +286,7 @@ break; if (dmalist[j] == 0) { - printk("%s: Illegal DMA %d specified\n", + printk(KERN_INFO "%s: Illegal DMA %d specified\n", dev->name, dev->dma); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); free_irq(dev->irq, dev); @@ -254,7 +295,7 @@ } if (request_dma(dev->dma, isa_cardname)) { - printk("%s: Selected DMA %d not available\n", + printk(KERN_INFO "%s: Selected DMA %d not available\n", dev->name, dev->dma); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); free_irq(dev->irq, dev); @@ -263,7 +304,7 @@ } } - printk("%s: IO: %#4lx IRQ: %d DMA: %d\n", + printk(KERN_DEBUG "%s: IO: %#4lx IRQ: %d DMA: %d\n", dev->name, dev->base_addr, dev->irq, dev->dma); if (register_trdev(dev) == 0) @@ -284,7 +325,7 @@ } else { - printk("%s: register_trdev() returned non-zero.\n", dev->name); + printk("KERN_INFO %s: register_trdev() returned non-zero.\n", dev->name); release_region(dev->base_addr, TMS_ISA_IO_EXTENT); free_irq(dev->irq, dev); free_dma(dev->dma); @@ -352,14 +393,12 @@ tms_isa_sifwriteb(dev, val, POSREG); tms380tr_open(dev); - MOD_INC_USE_COUNT; return 0; } static int tms_isa_close(struct net_device *dev) { tms380tr_close(dev); - MOD_DEC_USE_COUNT; return 0; } @@ -385,56 +424,61 @@ num = 0; if (io[0]) { /* Only probe addresses from command line */ + dev = init_trdev(NULL, 0); + if (!dev) + return (-ENOMEM); for (i = 0; i < ISATR_MAX_ADAPTERS; i++) { if (io[i] == 0) continue; - - dev = init_trdev(NULL, 0); - if (!dev) - return (-ENOMEM); dev->base_addr = io[i]; dev->irq = irq[i]; dev->dma = dma[i]; - if (tms_isa_probe(dev)) + if (!tms_isa_probe(dev)) { - unregister_netdev(dev); - kfree(dev); - } - else num++; + dev = init_trdev(NULL, 0); + if (!dev) + goto partial; + } } + unregister_netdev(dev); + kfree(dev); } else { + dev = init_trdev(NULL, 0); + if (!dev) + return (-ENOMEM); + for(i = 0; portlist[i]; i++) { if (num >= ISATR_MAX_ADAPTERS) continue; - - dev = init_trdev(NULL, 0); - if (!dev) - return (-ENOMEM); dev->base_addr = portlist[i]; dev->irq = irq[num]; dev->dma = dma[num]; - if (tms_isa_probe(dev)) + if (!tms_isa_probe(dev)) { - unregister_netdev(dev); - kfree(dev); - } - else num++; + dev = init_trdev(NULL, 0); + if (!dev) + goto partial; + } } + unregister_netdev(dev); + kfree(dev); } - printk(KERN_NOTICE "tmsisa.c: %d cards found.\n", num); +partial: + printk(KERN_DEBUG "tmsisa.c: %d cards found.\n", num); /* Probe for cards. */ if (num == 0) { printk(KERN_NOTICE "tmsisa.c: No cards found.\n"); + return (-ENODEV); } return (0); } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/